A device such as a flour sifter has been used by people since the invention of flour. Initially, such a device was like a sieve. Indeed, even in ancient times, people noticed that sifted flour improves the quality of the dough and, as a result, the taste of baking. If in the kitchen a housewife can get by with a simple sieve, then on an industrial scale, machines of adequate power are used.
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The screening machine is used for various reasons. In production, third-party garbage sometimes gets into the flour, ranging from threads to pieces of a plastic bag. All these components can easily spoil baking. This type of processing protects the baking mixture from third-party objects. Also, in purchased raw materials, sometimes not only a thread or cereal can be caught, but also such dangerous items as a piece of broken glass or a pebble. With the help of such processing, dangerous impurities are filtered from getting into food.
During long storage, caking of raw materials occurs, and if the humidity exceeds 14 - 15%, lumps may form. Accordingly, the product must be sieved to restore the original properties. And if the raw material is slightly dried, especially not once, then thanks to such manipulations it will become more loose and uniform. Thanks to such manipulations, the flour mixes perfectly with the rest of the ingredients, and the dough will turn out to be more uniform and reach the condition faster.
The sifted raw materials have larger volumes than from a pack. This parameter is very important when calculating the proportions to add to baking. This is especially important if the recipe indicates the measurement of volumes not in grams, but in glasses or cups. This parameter is very important when cooking in a bread machine or slow cooker.
The disadvantages include the fact that when sifting on the working surface, excess dirt is formed, which is not very pleasant.
This device began to be used due to the fact that initially the grain was ground with millstones, and not with the help of roller mills, so there was a need for additional purification of raw materials for baking. Now this process is automated and a top-grade product is sold on the shelves of stores, completely ready for use.
Before installing the screening machine, you need to decide in advance on the processing method, the method of supplying raw materials and dimensions. Before buying, you need to pay attention not only to the integrity of the structure, but also to some obligatory nuances. For example, there are devices that process no more than 100 kg of bulk product per hour, if this parameter is enough for a small bakery, then it is not enough for a large production line.
Depending on the method of feeding, the devices are divided into manual and automated.
Manual way. Popular for home use, rarely used in catering. The principle of use is simple - raw materials are poured into a special niche, and the processing is done manually. On a production scale, the method is long and inconvenient.
Automated machines. In most cases, it is used in manufacturing plants, as well as in bakeries and confectioneries. The principle of operation is that raw materials enter such a unit automatically. The baker only needs to start the appliance and the cleaning starts automatically.This method significantly speeds up the production process and facilitates the work of the employee.
Depending on the screening method, the aggregates differ in:
Such a unit can sift from 100 to 1000 kg per hour. Among the advantages of the machine are the speed of the process and the lack of operator control, as well as high arbitrariness. The bottom grids of such a unit change depending on the need for the size of the cell. The disadvantage is the high cost.
The principle of operation of the unit is that after the raw material has entered the hopper, it is fed into the screw areas by a special impeller. Next, the auger moves the contents to the sifter head. Further, centrifugal force functions, due to which the raw material is pushed into the sieve. It is from this place that special scrapers direct the sifted mixture into the output tray. A “trap” is also installed in this place, which contributes to purification.
Screening units are compact and large.
The design of the device directly depends on its type. For example, in centrifugal units there are no vibration elements, and in manual units there are no screws. Let us analyze the "composition" of the technique for screening in more detail.
The standard unit consists of the following elements:
The design of the device consists in a metal frame on high legs. On sale there are also models on plastic catwalks.
Whatever device you would not purchase, it is important to follow the rules of operation. The sieve and magnetic trap must be cleaned of sieved particles after each work cycle. A special sieve must be washed and dried. And at the end of the working day, the device is disassembled and the elements of the unit are cleaned, which include a loading hopper, a tunnel and a container for raw materials.
When choosing a device, you should pay attention to the quality of the material of the main elements. In most cases, they are made of stainless steel, rubber and rubber. A special tape is used for the magnetic system.
The sifting mug is made of high quality stainless steel. The main advantage of such a gadget is ease of use - in order to sift flour, a few simple movements are enough. The advantages of this model also include speed - the right amount of ingredient can be processed in just a few minutes. With the help of such a mug, you can process not only flour, but also other dry products.
The average price is 412 rubles.
A special sieve made in the form of a mug is ideal for sifting flour, sugar and other bulk ingredients.The device has two sieves, thanks to which the flour is better sifted and saturated with oxygen. In order for the raw material not to scatter on the working surface during sieving, there is a narrowing from below. The sieve is made of stainless steel.
The average price is 500 rubles.
The Hitt flour sifter is made of high-quality stainless steel, due to which the device does not emit harmful substances, does not oxidize and does not accumulate bacteria. The kit comes with two sieves. Can be washed in the dishwasher. Suitable not only for processing flour, but also for filtering syrups, broths, compotes, as well as rinsing fruits, vegetables and draining water when cooking various cereals.
The average cost is 502 rubles.
The details of the device are made of stainless steel, the material of the handle is plastic. When processing flour, two sieves are used. Can be washed in the dishwasher. Suitable for processing flour, straining syrups, broths, compotes, as well as washing fruits, vegetables and draining water when cooking various cereals.
The average cost is 616 rubles.
This screening model is made of high quality stainless steel, handles are made of plastic. Due to the manufacturing method, the device does not emit harmful substances. The kit comes with two sieves. Can be washed in the dishwasher. Suitable for processing bulk products, and for filtering syrups, broths, compotes, as well as rinsing fruits, vegetables and draining water when cooking various cereals.
The average price is 2069 rubles.
This machine is a floor-standing unit for processing and aerating flour of various grades. The device is excellent for use in food production, bakeries and confectioneries. The machine works according to the following principle: the bulk product is loaded into a funnel and passes through a vibrating sieve into an inclined discharge hopper.
The model features a built-in magnetic separation system. The grating is made of magnetic steel, with a mesh size of 1.2 x 1.2 mm. A high-frequency electromechanical oscillation generator is used to process the product. The capacity of the ATESY cascade at a maximum load is 150 kg per hour. One-time loading of products - up to 5 kg.
The average price is 42824 rubles.
Grill Master PM/1 70001 is produced in Russia by Grill Master. Professional device, which is most often used in small bakery and confectionery enterprises. The device has a high degree of purification due to magnetic separation. Made from stainless steel. The productivity of the unit is 150 kg per hour. The volume of the bunker is 40 liters, up to 6 kg of product can be loaded at a time.
The average price is 42771 rubles.
The horizontal vibratory unit is designed to separate raw materials from otherworldly impurities, as well as to aerate and loosen the baking mix in bakeries and flour mills, bakeries and confectioneries. Made from high strength materials. Maximum productivity - up to 600 kg per hour. Up to 40 kg of raw materials can be loaded at a time. Due to the presence of two types of sieves with dimensions of 1.2 x 1.2mm and 1.0 x 1.0mm, it can process various types of product.
The average cost is 53460 rubles.
The vibratory type unit has high productivity, it can process up to 300 kg of bulk product per hour. It is installed at large catering establishments, including bakery and confectionery industries. The volume of the loading bunker is 25 l. The unit, in a short time, can process large volumes of bulk product, clean it from foreign impurities and saturate it with oxygen. The device functions due to the reciprocating movements of the working elements. A perfectly clean product at the outlet is ensured by a magnetic trap.
The average price is 67,218 rubles.
The sieving device is used in large bakery and confectionery shops. With the help of this unit, you can also sift starch, sugar and other food powdery masses. It has high productivity - up to 3500 kg per hour.The device consists of a device for lifting bags of flour and loading them into a hopper, a centrifugal screening unit, a pipe with an auger, a magnetic cleaning unit, an electric drive and a control panel.
The average price is 238941 rubles.
When choosing a manufacturer of a screening device, you should pay attention to Russian companies. The main advantage of domestic products over imported ones is the price-quality ratio. The most popular among Russian suppliers are Atesy and JSC NPP Voskhod. At the moment, these enterprises are the largest suppliers of equipment for industrial production, bakery and confectionery shops, as well as large restaurants.