Entrepreneurs planning to set up a small wheat flour mill or prepare a complete wheat flour milling plant often encounter the same problem: using the same wheat flour milling machine and the same raw materials, the processing profits can vary drastically. كثير من الناس, when inquiring about wheat flour milling machine prices and connecting with manufacturers, focus only on the grinding unit, neglecting the core piece of equipment that determines profitability in the entire wheat flour production line – the double-compartment flat sieve. If you are researching the wheat flour production process or learning how to start a wheat flour milling business, you must understand the irreplaceable value of the double-compartment flat sieve in the entire wheat milling process.
استخدام نفس خط إنتاج دقيق القمح بطاقة 10 طن/يوم, نفس المواد الخام القمح, ونفس آلة طحن القمح, تحقق بعض مصانع المعالجة إنتاجية ثابتة من الدقيق تزيد عن 78%, إنتاج نظيفة, دقيق متدرج بشكل واضح بعلاوة عالية. آحرون, لكن, دائما يكون العائد عالقا في 65%-70%, مما أدى إلى الدقيق مع النخالة السوداء, خليط من الحبوب الخشنة والناعمة, وخسائر المواد الخام تتجاوز 10%. Most people attribute this problem to the wheat milling machine, neglecting the core profit driver of the entire production line – the double-compartment flat sieve (double-compartment high-square sieve).
The wheat milling machine only breaks down the wheat; the double-compartment flat sieve is the “brain” of material grading, طهارة, and coarse material recovery. هذه المقالة, specifically for small- to medium-sized mainstream 10-ton wheat flour production lines, fully analyzes the core value of the double-compartment flat sieve, its direct impact on finished flour, and essential points to avoid pitfalls when purchasing and selecting a model. This guide will help owners planning to open a small-scale wheat flour mill or build a complete wheat flour milling plant avoid unnecessary detours when selecting a wheat milling machine manufacturer and calculating machine prices.
A complete and standardized wheat flour production process consists of five main stages: raw grain cleaning → moistening the wheat → grinding and crushing in a wheat milling machine → grading via a dual-bin flat sieve → finished product collection. This is also the standard process for a mature wheat milling process.
After being milled in a wheat milling machine, the output is a mixture: دقيق ناعم, coarse wheat bran, بقايا القمح, and fine bran fragments are mixed together, making it unsuitable for direct sale as a finished product. الغربال المسطح ذو الصندوق المزدوج عبارة عن جهاز تصنيف متخصص يتكيف مع آلات طحن دقيق القمح ذات الحجم الصغير إلى المتوسط بسعة 10 طن. لديها غرفتي غربلة مستقلة, ولكل منها طبقات متعددة من الشاشات المجزأة. الآلة بأكملها تعمل بشكل مستقر, أفقي, حركة دائرية دون اهتزازات عنيفة, التصنيف والفحص تلقائيًا بناءً على الاختلافات في حجم جسيمات المادة وكثافتها.
على عكس المناخل المسطحة ذات الصندوق الواحد, التي لديها قدرة معالجة محدودة وتصنيف بسيط, تعمل الغربلة المتوازية ذات الصندوق المزدوج على مضاعفة مساحة الغربلة, مطابقة تماما ل 1-1.5 طن من تدفق المواد في الساعة لخط إنتاج دقيق القمح سعة 10 طن. إنه جهاز الغربلة الأساسي القياسي لمطاحن دقيق القمح الصغيرة ومصانع طحن دقيق القمح الكاملة.
يمكن للغرابيل الاهتزازية البسيطة العادية والغرابيل ذات الحجرة الواحدة أن تفصل الدقيق والبقايا الخشنة فقط, مما أدى إلى منتج واحد لا يمكن بيعه إلا بسعر منخفض مثل الدقيق العادي, الفشل في الاستفادة الكاملة من مزايا الإنتاج متعدد المنتجات لعمليات طحن القمح.
تحتوي الشاشات ذات الحجيرة المزدوجة على مسارين مستقلين للفحص, والتي يمكن تجهيزها 40-120 شاشات متدرجة شبكية, فصل المواد الارضية الى 4-6 الدرجات في تمريرة واحدة: 120 شبكة من الدقيق المكرر عالي الغلوتين, 80 شبكة الدقيق القياسية, جنين القمح الخشن, بقايا القمح, والنخالة, مع دقة تصنيف تصل إلى 99%.
لخط إنتاج طحن القمح 10 طن, يمكن إنتاج ثلاثة أنواع من المنتجات في وقت واحد: دقيق مكرر خاص بالمعجنات, دقيق منزلي عادي, وتغذية نخالة القمح. This is suitable for multi-channel sales in supermarkets, المخابز, and feed mills, significantly increasing product premium margins and is a key configuration for increasing revenue when starting a wheat flour milling business.
Flour yield is the core profitability indicator for flour mills. لكل 1% increase in flour yield per 10 tons of wheat processed, إضافية 100 kg of flour can be produced, resulting in a significant difference in long-term operations.
Inferior, simple sieves fail to thoroughly grade the wheat, allowing large amounts of endosperm-containing wheat germ and coarse flour to be discharged along with the bran, leading to a raw material loss of 8%-12%. High-quality double-compartment flat sieves, على الجانب الآخر, layer and trap all incompletely ground coarse material, automatically returning it to the wheat milling machine for secondary grinding through a dedicated outlet. This keeps raw material loss below 3%, and in practice, 10 tons of wheat can yield an additional 800-1200 kg of refined flour.
Many entrepreneurs, when inquiring about wheat flour milling machine prices, only compare the price of the main machine, ignoring the raw material loss costs incurred by the sieving equipment. This often leads to long-term losses, which is a major pitfall for starting a wheat flour milling business.
The price of flour depends primarily on its whiteness, bran content, and ash content. Fine bran particles are too small to be filtered by ordinary sieves, and when mixed into the flour, they cause the finished product to turn yellow or black, وتتجاوز معايير محتوى الرماد, failing to meet national standards for refined flour.
A dual-chamber, multi-layer gradient sieving structure filters the flour layer by layer, from coarse to fine sieving, precisely intercepting tiny bran particles and coarse fibers. The finished flour has very few bran particles, a stable ash content of ≤0.4%, a fine and white texture, and a longer shelf life. Its market price is 10%-15% higher than mixed bran flour, making it more competitive for both small-scale wheat flour mill retail and bulk export/export orders from complete wheat flour milling plants.
Low-quality, inexpensive double-compartment sieves suffer from poor sealing and loose sieve grids, leading to material cross-contamination and mixing of coarse and fine flour during operation. This results in only producing a single type of mixed flour, unsuitable for high-end refined flour. Even if a wheat milling machine is purchased, the entire wheat flour production line will only be available at a low price.
High-quality double-compartment sieves feature independent, sealed compartments with a robust, tightly pressed sieve structure. Each grade of material exits separately, preventing cross-contamination. This allows for stable production of multiple grades of high-end flour, maximizing the value of the wheat milling process.
Low-end double-compartment mills use open frames without soft seals, resulting in a large amount of flour dust flying around during operation. This leads to two problems: firstly, substandard workshop hygiene, failing to meet food production standards; secondly, fine flour is lost with the airflow, further reducing the flour yield, resulting in extremely high raw material costs over time.
For small-scale wheat flour mills and complete wheat flour milling plants producing commercial flour for export and foreign trade orders, fully enclosed soft-seal double-compartment flat sieves are essential to prevent material loss. The sealing structure is a crucial factor when calculating the price of a wheat flour mill machine.
Cheap woven sieves are easily worn and deformed. بعد 1-3 أشهر من الاستخدام, the sieve holes enlarge, allowing bran and coarse residue to penetrate and mix into the flour. Clogging of the sieve holes drastically reduces sieving efficiency, requiring frequent shutdowns for cleaning, resulting in decreased wheat flour production line capacity and unstable batch quality of finished products.
The standard double-compartment system comes with a thickened nylon alloy screen. The screen has uniform and non-deformable mesh, and the smooth trapezoidal mesh prevents material accumulation and screen clogging. It can maintain stable grading during 24-hour continuous operation and has a service life of more than 2 years under normal working conditions. This reduces the labor and parts costs associated with frequent screen replacements. When selecting a wheat milling machine manufacturer, the screen material must be specified in the contract.
Low-priced equipment lacks balanced shock-absorbing springs, causing severe machine vibration, screen misalignment, and inconsistent output. The same batch of flour may have inconsistent bran content or fail to meet fineness standards. معًا, vibration causes frequent screw loosening, resulting in multiple monthly downtimes for repairs and disrupting continuous production of a 10-ton wheat flour production line.
The high-quality double-compartment system utilizes an eccentric balanced transmission and flexible bottom shock-absorbing springs, ensuring smooth horizontal rotation. The overall machine noise level is below 60 ديسيبل, vibration is minimal, and the annual failure rate is reduced by 80%, resulting in consistent and stable flour quality across batches.
For a 10-ton/day wheat flour production line, a double-compartment flat sieve with a total sieving area of ≥8㎡ and ≥10 sieve layers per compartment is recommended.
Many low-priced wheat flour milling machine manufacturers cut corners by reducing the number of sieve layers and the size of the sieves. While this may seem like a 30% cheaper price, the actual sieving area is less than 5㎡, leading to material accumulation and clogging. The 10-ton capacity will not be fully utilized, significantly reducing flour yield and grading effectiveness.
The contract must specify the number of sieve layers per compartment and the total effective sieving area to prevent vendors from reducing specifications.
Small rural workshops that choose open double-compartment machines to lower prices in the short term face three major long-term problems: dust pollution in the workshop, fine flour loss, and failure to pass food safety environmental assessments.
For processing plants that export commercial flour for foreign trade orders, whether small wheat flour mills or large-scale integrated wheat flour processing plants, it is essential to choose a fully enclosed, soft-seal double-compartment flat sieve. Silicone sealing strips should be installed around the machine body and on all sieve doors to prevent powder leakage and ensure compliance with food safety production standards.
The sieve clamp fixing method directly determines the grading effect. Two types of inferior structures on the market should be avoided:
1. Simple side-pressure bolt clamping: Prone to loosening under long-term vibration, resulting in sieve misalignment and material mixing across compartments;
2. No independent clamping device: The sieve is suspended, allowing powder leakage through gaps during operation.
High-quality double-compartment sieves are equipped with a multi-point top tensioning device + side pressure plates for double fixing, firmly locking the sieve. This ensures long-term operation without loosening or powder leakage, maintaining stable grading accuracy, and preventing quality fluctuations in the entire wheat milling process.
Many small manufacturers only promise a 1-year warranty on the entire machine, excluding easily damaged parts such as screens, springs, والمحركات. They then sell spare parts at inflated prices after equipment failure.
When signing a purchase contract, be sure to clarify three points:
1. 1-ضمان سنة على الجهاز بأكمله, and a 3-year warranty on the screen frame and core components of the transmission shaft;
2. Free on-site replacement of parts for non-human-caused damage during the warranty period;
3. Lifetime supply of original factory screens, with a clear unit price for the screens to avoid exorbitant pricing later.
في نفس الوقت, prioritize wheat flour milling machine manufacturers that can provide on-site installation and commissioning, and free training on screen replacement and screen path adjustment. New operators of small wheat flour mills can maintain them independently without professional technicians, significantly lowering the operational threshold for starting a wheat flour processing business.
A 10-ton complete wheat flour processing plant in Kampala, أوغندا, initially used a simple double-chamber sieve and a conventional wheat mill. The entire production line yielded only 69% دقيق القمح, resulting in a high bran content and necessitating low-price wholesale. After replacing the sieve with a closed, multi-layered standard double-chamber flat sieve, three major improvements were immediately apparent:
1. The overall wheat flour yield increased to 78%, producing an additional 900 kg of refined flour daily;
2. Flour whiteness significantly improved, bran content was greatly reduced, and the price of baking flour increased by 12%;
3. The equipment can operate stably 24 ساعات في اليوم, reducing the number of monthly downtimes for cleaning from 10 ل 2, thus lowering labor costs.
س1: Why does the flour contain sand and have a gritty texture?
Standardized airflow and feed rate settings, along with regular screen cleaning, ensure thorough removal of impurities from raw materials, completely eliminating sand content and leaving no residue.
Q2: What to do about excessive shaking and noise from the cleaning screen?
Regularly tightening screws, replacing worn parts, and adding lubricant ensures stable equipment operation with low noise and no abnormal shaking.
س3: Can the moisture content of the wheat washing and moistening processes be precisely controlled?
The equipment uses clean water circulation and seasonally standardized moistening, ensuring precise moisture control, uniform wheat moisture content, and stable processing quality.
س 4: كيفية حل مشكلة عدم تساوي صلابة القمح أثناء المعالجة?
يتم ترطيب أنواع مختلفة من القمح بشكل منفصل, مع إضافة المياه في الوقت المناسب والكمية, ضمان ترطيب موحد, رطوبة حبوب القمح موحدة, ونتائج طحن متسقة.
س5: ما هو محصول الدقيق, وهل هناك أي نفايات الحبوب?
يمكن أن يصل محصول الدقيق من القمح عالي الجودة 70%-75%, مع التكنولوجيا الناضجة وخسارة منخفضة للغاية. عملية الإنتاج بأكملها مغلقة, منع الانسكاب, وجميع المنتجات الثانوية قابلة للتسويق, مما أدى إلى عدم وجود مواد النفايات.
المنتج الأخير
