Category Archives: wheat milling process

8 containers will load in Hongdafa factory for Africa client 2020.09.04

This week too busy, totally 8 containers will load for our Zimbabwe client.

Get price and more details

This client is in Gweru, who bought the 90T/24H maize mill in 2017 .

maize mill in Zimbabwe
maize mill in Zimbabwe
Get price and more details

In 2020, he buy the 120t and 300t maize mill and 150T wheat flour mill line.

hongdefa workshop stock
hongdefa stock

Urgent things call me on +8613933068531 directly

Get price and more details

#flourmillmachine #Zimbabwe #hongdefa #maizemill #maizemillingmachine

Importance of Water Regulation in Wheat Raw Grain

Today we share with you the importance of water regulation in wheat.

The purpose of wheat water regulation is to increase the toughness of the cortex and keep the bran intact during processing. The embryo softens and grinds to flour. In the national standard, the moisture content of common flour is less than or equal to 14%. The moisture content of high gluten powder is less than 14.5%. Different customers have different requirements for water. We should have targeted processing water.

The amount of water added to each food processing workshop and noodles is basically constant, but the external environment changes greatly. In the process of food processing under different temperature conditions. The dough softening speed is different. For example, the water content of flour should be lower under the condition of high temperature and water temperature. It hardens the dough and slows down the softening process. So in late spring, early summer and autumn, the water-saving points should be lower, and in cold weather, the water-saving points should be higher.

There was a great deviation in the water-eating ability of different wheat varieties. This is due to the quality of gluten. The absorptive capacity of gluten is at least 1:1.6. The highest: 1:2.7. The wheat gluten with low soft bulk density and unsaturated grain absorbed less water and was easy to soften. If wheat with high hard bulk density and full grains has strong water absorption ability. The dough is quite stiff. New wheat gluten has not yet been fully formed. That is to say, the ripening period is not enough. He also tends to soften.

That is to say, the water content of flour is higher when processing wheat with high hard bulk density and full grain. The moisture content of new wheat flour processed with soft, low bulk density and unsaturated grains is lower. In addition, the deviation of water absorption ability of each part of wheat grain is relatively large. The central part of wheat has strong water absorption ability, and the more dependent it is on the periphery, the worse it is. In the process, the front core grinding flour has strong water absorption ability.

That is to say, the moisture content of wheat flour with different qualities should be different. The same wheat has different identities under different climatic conditions. Flour in different technological positions has different water absorption capacity, which can be chosen according to the requirements of flour quality. Only by knowing how much water is added to wheat and in different seasons can you ensure the stability of your flour.

Our Hongdefa have more than ten engineers with more than 30 years’ experience for flour milling machine. And have many successful flour mill project in all over the world.

In Ethiopia install 120T/24h wheat flour milling machine

80T/24H wheat flour mill plan in Ethiopia

Afghanistan 300T/24H wheat flour mill

South Africa 1500T/24H flour mill machine

If you have any question about the wheat flour mill processing or want to know more about our flour milling machines, welcome freely contact with us:

Cel/WhatsApp/Wechat: +86 139 3306 8531


#cleaningtechincalflourmill #millingtechnicalflourmill #wheatflourmill #flourmillingmachine #wheatflourmillingmachine #flourmillingline #hongdefa

Cleaning of wheat flour milling machine

Cleaning of wheat flour milling machine

A. Wheat cleaning

  1. The purpose of wheat cleaning, due to the current technical constraints, wheat growth, harvest, storage, transportation and other processes will have impurities mixed. In the growing season, the wheat which is germinated and moldy because of too much rain and the wheat which is attacked by insects and diseases is the impurity in wheat, and the mixing of these wheat will affect the quality and odor of wheat flour.Therefore, in the milling wheat must be cleaned before, all kinds of impurities in wheat completely clean, so as to ensure the quality of flour, to meet the needs of the food industry and people’s lives, to ensure people’s health, and achieve the purpose of safe production.
  1. Classification of impurities impurities in the wheat can be classified according to the chemical composition and physical properties.

(1) According to the chemical composition

①The inorganic impurities

inorganic impurities mixed with clay and sand, refers to the brick, metal and other inorganic substances in wheat.

②The organic impurities

organic impurities is mixed with wheat roots, stems, leaves, grass seed, shell, grain and edible dissimilar value buds, spots, metamorphic and other organic substances of wheat.

(2)It can be divided into three categories according to physical property and particle size of impurity.

①large impurities  Refers to the impurity retained in Diameter of 4.5 mm
sieve screen surface.

②Side by side impurities  Refers to the impurities through the diameter of 4.5 mm sieve screen surface, retained in the diameter of 1.5 to 2.0 mm sieve screen surface impurities.

③Small impurities  Refer to pass through the diameter of 1.5 ~ 2.0 mm sieve screen surface impurities.

(3)According to the specific gravity impurityies can be divided into two categories:

①Heavy impurities  Refers to the wheat specific gravity is bigger than the impurities specific gravity.

②Light impurities Refers to wheat specific gravity is smaller than the impurities specific gravity.

3.Common methods of wheat cleaning

(1)wind selection method

The method of cleaning the air dynamics properties of wheat and impurities is called wind selection method.The aerodynamic properties are generally expressed as suspended velocities.wind selection method needs participation of air media.Commonly used air – selection equipment including vertical air duct and suction separator.

(2)Screening method

The method of cleaning with different size of wheat and impurity is called screening method.Grain size is generally based on the thickness and width of wheat and impurities.The screening method needs to be equipped with a suitable screen for the movement of the sieve, and the relative motion of the sieve and the wheat is used to stratify the wheat.Small size and heavy flour would be pass through the sieve.

The commonly used screening equipment has vibrating screen, rotary flat sieve and pre-cleaning screen.

(3) Using different grivatity of wheat and impurity to separate them.It is called gravity separation method. The gravity separation method needs the participation of the medium, and the medium can be air and water. The use of air as a medium is called dry gravity separation; the use of water as a medium is called wet gravity separation. The proportion of dry separation equipment commonly used gravity destoner, gravity separation, gravity separation equipment commonly used in wet stone wheat washing machine etc..

(4) selection method using impurities and wheat geometry and different length of cleaning method called selection method. It is necessary to use the inclined plane and the spiral surface to separate the wheat and the spherical impurity by the different geometric shapes. The common buckwheat seed throwing vehicles and other equipment. The use of different lengths for cleaning requires a rotating surface with a pocket. The short grain embedded bag holes are taken away, and the long grains remain outside the bag holes and are not taken away, so as to achieve the purpose of separation. Commonly used equipment has drum selection machine, disc selection machine, disc roller selection machine, etc.

(5) impact method by the impurity and wheat of different intensity cleaning method called impact method. Germination, moldy, diseases and insect pests of wheat, wheat and soil surface adhesion of dust, the adhesion strength is lower than that of wheat, the impact of the high-speed rotating component, broken off, the use of suitable mesh separating it, so as to achieve the purpose of cleaning. The impact of equipment commonly used are beating machine, impact machine, wheat brush machine etc..

  • magnetic separation method using wheat and impurity ferromagnetic different cleaning method called magnetic separation method. Wheat is a non-magnetic material, in the magnetic field is not magnetized, thus cannot be absorbed by the magnets; and some metal impurities (such as iron nails, nuts, etc.) is a magnetic material in a magnetic field will be magnetized by the magnet adsorption, which is separated from wheat. Permanent magnetic drum, magnetic steel and permanent magnetic box are commonly used in magnetic separation.
  • Grinding method;

To clean up wheat surface dust or grind wheat straw by the use of rotating rough surfaces (such as sand grain) is known as the grinding method. It is widely used for peeling and milling. Through the grinding of the surface of a few sand rolls can partially separate the wheat flour, which can shorten the powder path and make it easier to pulverize. The commonly used equipment is like peeling machine etc.

In addition to the above methods, there are other methods,such as the one according to the color of the photoelectric sorting method, the equipment is color selection machine. The current application is not yet widespread as the equipment is very expensive.

B. wheat moisture regulation

The moisture regulation of wheat, is to add the water and give it a certain time for moisture, so that to re-adjust the moisture of wheat and improve its physical, biochemical and milling process performance, in order to obtain better milling process effect.

  1. Physical and biochemical changes after adding water, the corresponding physical and biochemical changes occur:
  • the moisture content of wheatis more,the grain has a similar moisture content and similar water distribution by a certain
  • The first layer of water swelling, aleurone layer and endosperm followed by water swelling. Due to the three are with different orders in water swelling,so, there is a slight displacement in the radial direction of the wheat grain , then the combination between the three Force is weakened. This is favorable in separation of the cortex and the endosperm,and the powder can scrap from the cortex down easily.

(3)Cortical after absorb the water, toughness increased ,

brittleness reduced, increasing its ability to resist mechanical damage. Therefore, in the grinding process this facilitate the preservation of bran slices and clean the bran film on the endosperm, to ensure the quality of flour and improve the extraction rate of flour. In addition, the integrity of the bran is also conducive to the sifting and bran brushing.

(4)the intensity of the endosperm is reduced. The starch and protein contained in the endosperm are crossed together. Protein water absorption capacity (large water absorption), slow water absorption; starch granules weak water absorption (small water absorption), fast water absorption. Because of the difference between the speed and ability of the two, the expansion of the different and the degree of difference, resulting in starch and protein particles displacement, so that the endosperm structure loose, reduced strength, easy to ground into powder, is conducive to reducing power consumption.

(5) The yield of wet gluten increases with the increase of wheat moisture, but the quality of wet gluten is weakened.

(6) proteolytic enzyme activity, free amino acid content, saccharification activity, sucrose and a variety of reducing sugar content has changed. But little effect on the milling process.

From the above changes can be seen, wheat moisture regulation, the milling process performance improved, can increase the rate of flour, improve the quality of finished flour, and reduce power consumption.

  1. The corresponding process effect of wheat by water regulation, should be the corresponding process effects are as follows:

(1) so that the grinding of wheat with the appropriate water to meet the requirements of the milling process to ensure the relatively stable process of milling, easy operation and management. This is very important to improve production efficiency, flour yield and product quality. Requiring moisture uniformity within 0.2%.

(2) to ensure that flour moisture in line with national standards. Wheat dryness will cause the flour moisture is too low, so that the powder plant suffered losses; the other hand, wheat overheating will cause flour moisture is too high, not only will affect the interests of consumers, will also affect the flour storage management.

(3) the wheat flour was suitable for milling. The wheat after moisture adjustment, cortex toughness increase, endosperm internal structure is loose, decreased the binding force between the cortex and the aleurone layer and endosperm, is conducive to the improvement of milling performance. However, the high moisture content of wheat will decrease the fluidity of work in process, cause the blockage of sieve and flow, and affect the normal production of flour milling. Therefore, considering the improvement of flour milling performance, there should be a suitable water content for wheat milling.

After adding water, the wheat must be mixed quickly, and the water will begin to penetrate into the water through a certain mechanical action, so that the wheat grain has certain water holding capacity. The water regulating equipment for wheat generally consists of two parts: the water adding device and the water feeding equipment. The wheat moisture regulation equipment generally has the cup water machine, the powerful water machine and the water mixer. At the same time, wheat after water, water from outside to inside infiltration requires a certain period of time, usually 16 to 24 hours, where wheat tempering time required by certain storage warehouse to ensure, called the tempering bin.    

C. wheat cleaning process

  1. the development of wheat cleaning process based on

(1) grinding wheat quality standard net

①The buckwheat dust impurity not more than 0.02%, grain impurity does not exceed 0.5% (shelling of dissimilar grain at the present stage not included), should not contain metal impurities.

② the ash content of wheat should not be less than 0.06% after cleaning.

③The moisture content of the finished flour should be in line with the national standard.

(2) The quality of wheat

Wheat varieties and quality is not immutable and frozen, therefore, the designing of the cleaning section flow should take into account factors like the number of impurities in wheat,proportion of hard wheat and soft wheat, and the content of water, etc.It’s better to adopt good cleaning equipment and water conditioning equipment. In actual production, for wheat with little impurity and high moisture, can adjust the shunting device, not have to pass through every equipment.

Considering the wheat producing areas of China, wheat growing in south of China area normally have more buckwheat seeds and mud, less sand and high moisture. Usually not considering wheat washer, considering enhance threshing wheat, removing buckwheat and destone in dry way. Wheat growing in north of China normally contain more sand and marl, less buckwheat seeds and low moisture. To clean up this kind of wheat, should strengthen the suction, destone and wheat washing process, generally not consider buckwheat removing equipment. Wheat growing in Spring area have high moisture, more sand and wild grass seeds. To process this kind of wheat, should strengthen the screening, selection and destone process; low temperatures in winter, wheat should have procedure of preheating and moisture adjusting.
Wheat infected with smut, ergot and scab has a great influence on human health. Therefore, we must pay high attention to the cleaning. The infection of scab and smut of wheat, wheat should be strengthened, broken by a serious pest and weaken the wheat, and strengthen the screening and winnowing, in order to achieve effective cleaning. When wheat contains ergot, it can be cleaned effectively by gravity classifier.

Insect pests of wheat should be killed by the impact machine, and strengthen the screening and suction, remove insects and insects fragments. The grain length of wheat, such as wire worm disease, is shorter than that of normal wheat grain, but its width is similar. It is difficult to remove by screening, and it is more effective to remove with grain separator.
In China’s varieties kinds of wheat, soft wheat more than hard wheat, in the processing of hard wheat,  need to add more water and moisture wheat time.

(3) factory size and type of milling flours

Under normal circumstances, the factory scale larger, the production of high precision flour higher, the relative clean-up process to be better. The small-scale processing factory have low  precision of flour requirements , Suffer the investment conditions and plant space constraints limit, the relative clean-up process is simple, in this case, you can choose a compact, with a variety of functions and better combination of cleaning equipment , To ensure that the basic clean-up process and the necessary clean-up road.

2. Requirements for establishing wheat cleaning process

(1)Each process is complete, the number of cleaning equipment is appropriate, the process sequence is reasonable.

  • In accordance with the “first easy after difficult, first inorganic after organic” principle to arrange the process sequence
  • to the largeharm and much content impurity, such as sand, buckwheat seeds, wheat scab etc. should strengthen cleaning.
  • The process should be flexible in order to adapt to the change of impuritiesin raw materials
  • There should be perfect water regulation facilities to ensure the moisture content of the incoming wheat to meet the process requirements.
  • There should be perfect wheat processing facilities, so that the quality index of wheat into the mill can basically meet the quality requirements ofthe finished flour.
  • Serial, standardized, universal and efficient advanced cleaning equipment should be used as much as possible.
  • In order to ensure environmental sanitation and improve the efficiency of impurity removal,thedesign ofair dust removal system should be reasonable

For the wheat cleaning information, can discuss with us by Email or check more details on You also can call or whatsapp : +86 138 3346 1840.


Knowledge about flour


About French Flour What do they mean T45 / T55 / T65 ?

Flour is the most commonly used raw materials for bakery. Cake, bread, biscuits all need to use flour, different flour play different roles in the variety of baking food , but generally are from the “skeleton” role. Do baking, you’d better understand these knowledge about flour. 

The type of flour: according to the content of protein , we usually divide the flour into three categories:

1.High gluten flour (strong gluten flour, high protein flour or bread flour), protein content is 12% to 15%, wet gluten weight> 35%. High-gluten flour suitable is for making bread, from pastry pasta, bubble and pine crisps and so on.

Low gluten flour (weak gluten flour, low protein flour or biscuit flour), protein content is 7% to 9%. Wet surface weight <25%. Low gluten flour is suitable for making cakes, biscuits, mixed cakes and other pastries.

Middle gluten flour (generic flour,middle protein flour) is a kind of flour which is between the high gluten flour and low gluten flour. Protein content is 9% to 11%, wet gluten weight between 25% and 35%. Medium gluten flour suitable for fruit cake, can also be used to make bread. 


Besides the special flour, premixed flour and whole wheat flour get more and more popular by bakery enterprises and get the application.

1、Special flour: Flour suitable for the production of special food, which is specially prepared by using flour as raw material.

2、Premixed flour: Flour premixed by the flour, sugar,oil powder, milk powder, improver, emulsifier, salt, etc according to the formula of bakery product. The sponge cake premixed flour, cookie premixed flour and muffin premixed flour sale in the market are this kind of flour.

3、 Whole wheat flour: Flour milled from the whole grain wheat including germ, most bran and endosperm. Bran and germ is rich in protein, cellulose, vitamins and minerals, with high nutritional value.

France, the largest agricultural producer in Europe, has its own system of flour. All kinds of flour are so dazzling. Today to introduce the most normal flour – wheat flour.

 Flours produced by wheat milling have different characteristics. But the main ingredient is nothing more than starch and protein.

The French classification of wheat flour, based on the ash content of wheat flour, is roughly divided into 6 categories.


* Ash – refers to the mineral composition included in wheat bran . In simple terms, it can also be understood as impurities in bran.

According to the ash content, with the size of the figure, to limit the form of flour.

For example (T45 / T55 / T65 / T80 / T110 / T150)

The smaller the number after T, the higher the degree of refinement of the flour, the more white the color of the flour.

The larger the number after T, the lower the degree of refinement of the flour, and relatively the darker of flour.

Ono Chih Kwan said French flour is very personal, compared to Japanese flour the operation is more difficult, the French flour tendons is higher than the Japanese flour ,is more difficult to knead, different seasons, different batches of French flour , Even with the same section of flour, flour characteristics will be greatly changed. 

Champion baker Wu Baochun said with the French T55, T65 flour roasted bread, thick skin, taste more hard ,wheat incense is also more rich.

The above two masters have mentioned the French flour, such as T65, T55 like the powder, why these powder so classification ? 

In general, the flour classification is according to the protein content but the classification of wheat flour in French is decided by the proportion of ash content, such as T45, that is about 0.45% of the fly ash content. The higher  the ash content, the darker the color of flour, mineral content more. The ash is minerals contained in wheat, this also determines the richness of wheat flavor, ash ratio is one of the classification method in French wheat, which is on base of production process of French wheat flour, it is wheat grinding ratio. 


The ash content less than 50%, and the grinding ratio of wheat grain is 60 ~ 70%

We can make desserts, toast, and brio and other heavy cream bread with T45,

When we using T45 to make the Brioche, the water needs to be reduced compared with the Japanese wheat flour.

Because of the powder of T45, in the making of bread, it will retain the aroma of the wheat, not to be taken away by the cream. 


The content of ash is 0.50%~0.60%, and the grinding ratio of wheat grain is 75%~78%.

We can make baguette and Croissant with T55..

When we use T55 to makes bread with natural yeast after a long time fermentation. The skin has a small blisters in the skin, and the inner texture is like a mochi, the color is darker than French bread, and the skin is thicker.


The content of ash is 0.62~0.75%, and the grinding ratio of wheat grain is 78%~82%

It can be used to make French bread.

T65 made French baguette, crisp skin, not using natural yeast for a long time fermentation, skin bubble less,

Compared with T55, the color yellow, thick skinned and crisp

As the number increases, the ratio of ash to wheat grains increases

T80 (half stick powder with liquid yeast)

T110 (large French bread) quasi whole grain powder

T150 (whole wheat bread) whole grain powder

The above is about the introduction of French T flour  

Shijiazhuang Hongdefa Machinery do the wheat flour mill machine which process raw wheat to wheat flour with high quality.

If anyone who need wheat flour mill machine, contact with us or visit for more details.

flour mill machine

The 60 tons per 24h wheat flour mill machine is being installed for Algerian client

In Shijiazhuang Hongdefa Machinery, the wheat flour mill machine is another product on our product range. Our company has supplied the wheat flour milling machine to several countries across the world.The wheat flour mill machine processes wheat to produce fine wheat flour for bread, biscuits, chapati and a wide range of other wheat products.The wheat flour milling machine comes in different capacities ranging from the 5tonne/24hr to the 800tonne/24hr. The wheat flour machine can also be ordered with specifications to suit our clients’ preferences. And our wheat flour mill machine is very popular with African clients.

flour mill machine
The factory of flour mill machine

Recently, we have a set of 60t wheat flour mill machine is being installed in Algeria, which uses the pneumatic roller mill, plansifters, PLC control system technology. For this 60t/24h wheat flour mill machine from HDF Machinery, I have the following information to share with you.

1.Total length of the roller:8000mm


3.Flour extraction: To produce standard flour:75-82%                                                                                            To produce grade 2flour: 72-75%                                                                                                To produce grade 1flour: 60-68%

4.Flour quality: Obey the people’s republic of China’s GB1355-88 standard         Volume weight /g/L                                                                                                                       Faultiness grain content /%                                                                                                        Impurity content /% Mineral content /%                                                                            Moisture content /%                                                                                                           Odor content /%                                                                                                                     ≥750 ≤6.0 ≤1.0 ≤0.5 ≤13.5 natural                                                                                 Ash:to produce grade 2 flour: 0.80%(dry weight) to produce grade 1 flour:   0.70%(dry weight)

  1. Power supply: 251.72KW
  2. Container: 40’HQ× 5
flour mill machine
60 tons per 24h wheat flour mill machine
Get price and more details


The wheat flour mil machine complete line is made up of the cleaning section, milling section and the packaging section.

Cleaning section

1.Beat :This is to eliminate all the dirt like dust, bacteria and insect seed.

2.Sceening: This is to remove large and small impurities.

3.Destoner: To remove stones.

4.Magnetic separator: Remove all metal material in the wheat.

5.Dampener: This is ensure the bran’s integrity during the milling process.

flour mill machine
cleaning section of flour mill machine

Milling Section

1.Roller mill:To break the integrity by roller movement.

2.Sifter: For separation of the flour and the bran and also to separate large size from small size for quality provision.

Packaging Part

This is made up either of the auto packing machine or the manual packing machine depending with the client’s preferences.

flour mill machine
packing machine of flour mill machine


Get price and more details


If you buy a flour milling machine from our Hongdefa Machinery, we will provide you with a comprehensive after-sales service system. You will enjoy these benefits:

  1. Two years spare parts delivery together with the machine

2.over sea service center available, 24h after service:                                                            Lusaka Zambia, Ethiopia,Multan Pakistan                                                                              Durban South Africa,New Delhi India

3.Warranty 2years

4.Chinese professional engineer guide installation and commissioning.

flour mill machine
60 tons per 24h wheat flour mill machine from HDF Machinery
Get price and more details


If you are interested in our wheat flour mill machine, contact me freely:

Cell/WhatsApp/: +8613833461840


Or click for more details and price about flour mill machine.



flour mill machine

The installation experience of wheat flour mill machine

Wheat Flour mill machinery, there is many machines and between the machine have connection. In order to improve work efficiency, improve the quality of the project, carefully read the drawings before installation, inspection site, in order to determine the better construction program. The operation of the process to fully integrate the actual situation on the scene, rather than blindly according to the design drawings for cutting and equipment layout. At the same time, construction must pay attention to the safety of personnel and equipment.

high quality of wheat flour mill machine
wheat flour mill machine

National Development and Reform Commission, Ministry of Industry and Information Technology released the “food industry” second five “development plan” is expected by 2015 to deal with wheat 400t / d above the proportion of enterprises will increase to more than 65% Increase by 15 percentage points, the author of these years involved in the installation and commissioning of the flour mill single line of the daily processing capacity has reached a minimum of 400t / d, and at least two production lines at the same time boot. This trend of development to the flour equipment installation industry has brought great opportunities for development, but also to the installation work put forward higher requirements, bringing greater challenges.

Get price and more details


1.Flour equipment installation requirements and the difficulty
The quality of the installation project not only to meet the national and industry standards, such as: GB50300-2013 “construction quality acceptance of a unified standard”, GB 50231-2009 “mechanical equipment installation and acceptance of the general norms”, but also to meet the construction The special requirements of the unit. In ensuring the use of functions, operation and inspection and maintenance of the premise, the enterprise will be on the overall external appearance of the demanding requirements. We may one-sidedly believe that the installation of equipment is nothing more than in accordance with the layout of the main map, auxiliary equipment in place fixed, according to profile, elevation to determine the direction and elevation of the pipeline can be. In fact, not yet, because there is no specific food machine equipment for the installation of standards and norms, the installation process a lot of practices are drawing on the experience of other projects to operate. This requires practitioners with a wealth of experience in installation and commissioning. In addition, because the flour mill of each device is not isolated, and its front and rear, up and down, are related to the equipment with the match, which requires the installation staff to have a global view, before proceeding to establish the overall idea of ​​installation, Clear the connection between the equipment, must not blindly start. Flour mill installation difficulty is mainly concentrated in the following two aspects: First, the process is complex, many channels. Modern milling process to promote light grinding subdivision, strengthen the classification, especially the high-sieve outlet between the powder pipe, with “so much” to describe it is not too much, but also with a lot of tee and fighting, the pipeline not only Easy to get wrong, and there may be between the pipeline space conflict. Another major reason is that the flour mill pipeline has the installation angle requirements. As the flour mill raw materials, finished products, finished products and by-products have their own self-slip angle (wheat 27 ~ 31 °, milling intermediate 37 ~ 44 °, standard powder 40 ~ 44 °, bran 37 ~ 40 °) , Therefore, the first task of pipeline installation is to ensure that the material can be smooth in which circulation, followed by consideration of beauty.

  • Examples of flour mill equipment installation 

1) Output screw under the bin of clean section

Construction drawings tend to mark the installation height of the conveyor and the installation location, which are understandable, but also a complete design drawings indispensable. However, the installation staff may be based on profile, elevation drawings made in advance of the size of the conveyor belt, while ignoring the actual situation of the scene. The size of the drawings is an ideal condition, but the construction of the building will inevitably produce some changes (floor thickness error, the bottom of the ground elevation error, etc.), and sometimes even a more substantial change, so as to give Subsequent equipment installation work is difficult. In order to prevent the material from flowing out of the automatic classification phenomenon, clean up the wheat warehouse is often designed as a multi-export form, all the export of the slip pipe pool to a bucket and then by the wheat into the screw conveyor, so the top of the conveyor to leave enough Height is used to install the collection bucket and with wheat, but the conveyor can not be installed too low, because it also down the hoisting machine feeding. So the conveyor height of the conveyor to meet the wheat from the slip angle of the premise can be installed as low as possible in order to collect the bucket and with the wheat to leave enough space, but also to facilitate the daily management and maintenance, and unnecessary According to the height of the drawings marked to the production and installation.


Get price and more details

2) Input conveyor at the top of the bin installation

General  roof are open-air, reserved holes can not be arbitrarily changed, changes may lead to the warehouse into the water, resulting in mildew of grain. On the other hand, the current capacity of the vertical silo are in the direction of large-scale development, is often tens of thousands of tons of capacity, due to the large number of target storage, transport distance is longer, scraper scraper is often arranged in sections, by The former scraper back to a feeding, the same scraper material may be able to enter two rows or even more positions. In order to save the material, the scraper is often tilted, the inlet is low and the outlet is high, and each outlet has a slip tube and a pneumatic gate. The above technical requirements and characteristics of the scraper machine to fully determine the minimum installation height, below the minimum installation height to ensure that the wheat from the slip angle. Therefore, in determining the installation height of the scraper must be in advance to understand the actual situation at the scene (reserved hole position is correct, scraper material to enter the target, etc.), rather than blindly according to profile, elevation On the size of the production scale, if the civil construction process errors or errors may cause the actual installation height changes, rework time is a waste of material and labor-intensive.

3)Some machine installation Precautions

As the structure of the device itself and the working principle, the installation, one can not damage its vulnerable parts, two to ensure that its normal, stable work required for the basic conditions. Some precision equipment, such as measuring scales, gravity meters, balers, water control, etc., these devices are equipped with a sensing device, in the installation to avoid strong electric field, magnetic field and high temperature environment, welding or gas cutting Should pay attention to protection. In addition, the installation must be adjusted to a good level, installed firmly to avoid shaking to ensure its measurement accuracy, the equipment bracket or base to be self-contained, can not be shared with other stents or connected In order to ensure the accuracy of the sensor operation, such equipment requirements upstream The flow rate is stable, so the upper end of the general requirements are required to install the buffer bucket or buffer elbow to reduce the impact of incoming to ensure the stability of the flow. Take the water controller as an example

Bucket elevator hopper Level indicator level high/low  No work                                                                                                             ↓                                                                                                                                Micro process unit

                                                                                                          ↓                                                      Down-hopper Pneumatic valves    ← The electromagnetic valve←compress air

The traditional process of wheat and wheat are out of the “one clean” treatment by the hoist to the top, then enter the water control device to detect the real-time flow of wheat and the initial moisture content, the controller and then set the target Moisture content to determine the water machine water. From the control device to detect changes in the flow of wheat to indicate the change in the amount of water to change the amount of water will be less time, if the flow of incoming instability will lead to water is not accurate and thus affect the grinding and grinding effect. In addition, the water control device to detect the initial moisture content of wheat requires the hopper in the wheat level to maintain a certain height so that the detection probe can be detected, if the material is too high or too low, the hopper below the gate will be corresponding Adjust the opening degree of their

own in order to maintain the level of wheat in the hopper, if the upstream flow of the incoming flow can not be maintained at a stable level, then the gate opening degree will change frequently, the gate opening degree changes first identified by the probe Information feedback to the micro-red space may cause the hoisting machine blocking material, causing the system to stop. Such as the details are easy to be ignored, the drawings are also very difficult to fully express it, which gives managers and the quality of the installation staff made a high demand.

  • Safety when installation

The last and most important is the safety of the installation process, including personal and device safety. Welding, gas cutting should pay attention to the work below the staff and equipment, personnel leave the time to cut off the power and gas source, after get off work to arrange full-time staff to inspect. Personal safety is the most important, even if the

installation of the perfect flaw, if there is a security incident will be a vote veto. Especially in the early installation, equipment and pipelines are not in place, more holes reserved, be sure to do a good job of holes and edge protection and warning work, at the same time to strengthen the training, the construction workers to carry out safety education, improve its Own security awareness.

4 Total

Flour milling machine  installation requires practitioners with a global view and clear ideas, according to the actual situation of the scene to adjust the construction of the program flexibility, and not mechanically according to the design drawings for equipment and pipe connections. Under the basic premise to meet the functional realization, we should strive to make the equipment layout reasonable, the pipeline to the beautiful. Problems that are not found and resolved during the installation process are exposed during commissioning, especially when commissioning is carried out. Due to the material when the pipe material, this time the changes will cost more time and effort, so the installation must be taken seriously, to find and solve the problem, as far as possible in the installation to be handled, must not be opportunistic, only so When debugging can be done confidently, leisurely.


Get price and more details

If you any questions about  wheat flour mill machine, contact me with:

Cell/WhatsApp/: +8613833461840


Or click to visit our website





Welcome to Shijiazhuang Hongdefa Machinery.Co.Ltd. Today we take a look at one section of our maize,wheat and corn milling plants.Let us get into detail on the cleaning section of our maize milling machines.

Cleaning and conditioning of the maize is an important step in the processing of maize. Cleaning refers to the removal of foreign material and all that is not maize kernels from the to-be milled grain.These foreign materials lower the quality of the product. Examples of foreign materials are  husk, straw, dust, sand and everything too big or too small and lighter than a maize kernel. It also refers to the removal of poisonous seeds, and material harmful to the milling equipment. Examples are  metal and stones.

Required final products

Conditioning refers to the addition of moisture to the maize to allow the bran to be peeled off in flakes during milling with plate or roller mills, allowing easy separation in a sifter and most importantly to add mass to the meal.

The degerminator is designed to scrub the bran skin off the maize and dislodge the germ from its cavity with minimum reduction in size of broken fragments.

The destoner is applied for efficient separation of stones ,pebbles, glass and other high-density matter from the stream of grain.

The Scourer is designed to remove impurities and contaminations like dust,sand etc. This improves the final product sanitation as it reduces bacteria and insect count.This is used on our wheat milling machines.

The Magnetic separator is designed to remove all iron containing materials from the grain, flour and bran

 As you can see all our machines are manufactured with great expertise and as you can see our cleaning process leaves no unwanted material in the maize. This ensures that the final maize flour meal will be of superior quality because it will not contain any impurities.

Classic maize mill machine

Visit for more details and inquiries.

Call/Whatsapp :+86 138 3346 1840

Email    :