RU204716U1 - DEVICE FOR DRYING AND HEATING OF BULK FOOD PRODUCTS - Google Patents

Abstract

The utility model relates to food industry devices and can be used for drying and preheating the extrusion of food and chemical substances in the processing of plant or animal raw materials, as well as for intermediate drying of bulk substances and ventilation during long-term storage. The device for drying and heating bulk food contains a cylindrical casing, heating elements, an unloading window, and on the outer side of the body a guide is rigidly fixed, inside of which a rod is built with the possibility of 360 ° rotation around its axis, on the end side of which a slide gate is fixed, on at the end, a heating coil is fixed, with the other end fixed to the outer side of the perforated pipe, through the hole in the upper part of which the food product is supplied, the heating of which is carried out by air supplied through the nozzle fixed in the upper part of the body. The technical result is an increase in productivity due to design changes that implement the active ventilation process. 2 ill.

Description

The utility model relates to devices for the food industry and can be used for drying and preheating the extrusion of food and chemical substances, in the processing of plant or animal raw materials, as well as for intermediate drying of bulk substances and their ventilation during long-term storage.

A device for continuous drying of bulk materials is known (Pat. RF No. 2259526, IPC F26B 11/04, Device for continuous drying of bulk materials, publ. 27.08.2005) [1], containing a heat-insulated chamber, a device for loading and unloading the processed material , supply and output of the drying agent and pallets installed in layers in the chamber, mounted with the possibility of rotation under each other, which are interconnected and made in the form of drums in the form of tetrahedral columns, mounted from separate perforated equilateral triangles.

The disadvantage of the known device is the complexity of manufacture and operation, limited technological capabilities.

There is also known a device for drying grain (US Pat. RF No. 2371650, Device for drying grain, publ. 27.10.2009) [2], including a cylindrical casing, the outer surface of which is covered with a layer of heat-insulating material, heating elements are placed on the outer surface of the casing under a layer of heat-insulating material between the loading hopper and the unloading window, the loading hopper, the unloading window, a transporting working body is installed coaxially inside the casing with the possibility of rotation, there is an air duct and a fan, the transporting working body is made in the form of a hollow screw shaft, the turns of which are perforated with a perforation diameter not exceeding the minimum grain size, the casing is made composite, and the constituent parts of the casing are separated by rings made of heat-insulating material, the air duct is connected to the inner cavity of the casing, a heating element is installed in the air duct between the casing and the fan.

However, the known device has a drawback, which can be attributed to the incomplete use of the internal volume.

The technical task of the utility model is to increase productivity due to design changes that implement the active ventilation process.

The technical problem is solved due to the fact that the device for drying and heating bulk food contains a cylindrical casing, heating elements, an unloading window, and on the outer side of the body a guide is rigidly fixed, inside which a bar is built in with the possibility of 360 ° rotation around its axis, on the end side of which a gate valve is fixed, at the end a spiral is fixed, the second end is fixed to the outer side of the perforated pipe, through the hole in the upper part of which the food product is supplied, the heating of which is carried out by air supplied through the nozzle fixed in the upper part of the casing.

The essence of the utility model is to make it possible to regulate the increase or decrease in the temperature of the heating air by changing its pressure during supply for active ventilation.

The design of the proposed device that implements the process of active ventilation entering the hopper through the central perforated pipe of the food product can be implemented in the form shown in Fig. 1, which shows: pos. 1 - perforated pipe; pos. 2 - heating coil; pos. 3 - damper; pos. 4 - barbell; pos. 5 - casing; pos. 6 - guide.

FIG. 2 shows a side view of the device, where it is shown: pos. 7 - branch pipe; pos. 8 - air flow; pos. 9 - hole.

The food product, for example grain, passing through the hole 9 into the central perforated pipe 1, through the perforation perpendicular to its movement is influenced by the air flow, injected through the pipe (7) and heated in the space between the perforated pipe (1) and the movable gate valve (3) of the plate diaphragm. The gate valve (3) is installed with the possibility of approaching the pipe (1) by acting on the rod (4) with the possibility of rotation around its axis, fixed in the guide (6), on which the heating coil (2) is located.

The principle of operation of the device is as follows. As the volume between the slide gate (3) and the perforated pipe (1) decreases, the air, with constant heating of the spiral (2), increases its temperature, which increases the heat of transfer and the heating of the food product, for example, grain, becomes more intense. Increasing the pressure of the air supplied through the branch pipe (7) increases the volume of heated air, which ensures a decrease in temperature.

Experimental studies of the performance of the proposed technical solution have yielded the following results. It has been established that the increase or decrease in the temperature of the heating air is controlled by changing the pressure supplied for active ventilation of the air, which ensures an increase in the quality indicators of the finished product.

Thus, the technical solution is notable for its novelty and new useful qualities that provide an increase in productivity due to design changes that implement the active ventilation process. The technical solution can be used in the interests of food manufacturers.

Claims (1)

A device for drying and heating bulk foodstuffs, containing a cylindrical casing, heating elements, an unloading window, characterized in that a guide is rigidly fixed on the outer side of the casing, inside of which a rod is built in with the possibility of 360 ° rotation around its axis, on the end side of which is fixed a gate valve, a spiral is fixed at the end, the second end is fixed to the outer side of the perforated pipe, through the hole in the upper part of which the food product is supplied, the heating of which is carried out by air supplied through the branch pipe fixed in the upper part of the casing.

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