RU2460405C1 - Device for food products drying - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to food industry. The device for food products drying includes casing of rectangular cross section, it surface coated with a layer of heat-insulating material, a loading bin, an unloading port, a transporting work tool (designed in the shape of a loop chain with perforated scrapers), heating elements, a blower and an air duct. Installed inside the casing is a box having holes in its upper part, the holes size not in excess of the minimum size of the product transported. The lower part of the chain with scrapers rests on the box upper part. The air duct is installed in the side part of the box (perpendicular to the latter) at an equal distance from the loading bin and the unloading port. Placed inside the air duct are the heating elements and the blower.

EFFECT: proposed invention ensures high performance of the food product drying process and allows to improve the end product quality.

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Description

The invention relates to agricultural machinery, in particular to a device for drying food products.

A device for drying grain [Patent RU 2323580. - Publ. 05/10/2008, Bull. No. 13], comprising a cylindrical casing, a loading hopper, an unloading window, a transporting working element coaxially mounted inside the casing for rotation, heating elements and a cooling device, which consists of a fan and an air duct connected to the internal cavity of the casing behind the unloading window. The outer surface of the casing is covered with a layer of heat-insulating material. The transporting working body is made in the form of a screw with perforated turns, the diameter of the perforation does not exceed the minimum grain size. The casing is made integral, and its components are divided by rings, which are made 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 discharge window with the possibility of individually controlling the heating temperature of each of the sections of the casing. Each component of the casing is equipped with an individual heating element. The end surface of the casing from the side of the hopper is perforated.

The known device has disadvantages, which include low productivity, design complexity and uneven heating of the product.

The purpose of the invention is to increase the productivity of the device, simplifying the design of the device and improving the quality of the finished product.

This goal is achieved by the fact that the casing is of rectangular cross-section. The transporting working body is performed in the form of an endless chain with perforated scrapers. Inside the casing, a box is installed with holes in its upper part, and the size of the holes does not exceed the minimum size of the product being transported. The lower branch of the chain with scrapers is carried out resting on the upper part of the duct, in the lateral part of which an air duct is made. The air duct is connected to the box at an equal distance from the loading hopper and the discharge window. Heating elements and a fan are installed in the duct.

Figure 1 shows a General view of the device; figure 2 is a section along aa.

A device for drying food products consists of a casing of rectangular cross section 1, covered with a layer of heat-insulating material 2, a loading hopper 3, an unloading window 4 installed inside the casing of the transporting working body 5, heating elements 6, fan 7 and duct 8. The transporting working body 5 is made in in the form of an endless chain with perforated scrapers. Inside the casing 1 is installed box 9 with holes 10 in its upper part. The lower branch of the chain with scrapers rests on the upper part of the duct 9. The duct 8 is located in the side of the duct 9 at an equal distance from the feed hopper 3 to the discharge window 4. In the duct 8 there are heating elements 6 and a fan 7.

The device operates as follows. The heating elements 6 and the fan 7 are turned on. Then the food product is fed into the loading hopper 3, from where it enters the heated surface of the box 9, through which the transporting working body 5 moves to the discharge window 4. The heated air stream through the duct 8 enters the box 9, passes through its openings 10, the perforation of the scrapers, evenly heating the food product and removing evaporated moisture from it. Excess moisture in the form of steam is removed from the device partially through the discharge window 4, and partially through the loading hopper 3. The dry product is removed from the device through the discharge window 4.

Simplification of the design of the device and increase its performance is achieved by manufacturing a casing of rectangular cross section and placement inside the casing of a transporting working body, made in the form of an endless chain with scrapers that have holes. Moreover, productivity increases with increasing width of the device, the height of the scrapers and the speed of the chain with the scrapers. The required heating temperature of the food product located on the upper surface of the box is ensured by supplying heated air to the inside of the box and uniform air out through the holes in its upper part, heating the processed material. Moreover, the implementation of the duct in the lateral part of the duct, perpendicular to it and at an equal distance from the loading hopper and the discharge window, improves the uniformity of the distribution of heated air along the upper surface of the duct, ensuring the required processing quality. At the same time, making holes with a size not exceeding the minimum size of the product also contributes to uniform blowing of the product with heated air, providing the necessary quality of drying with high productivity of the device.

The source of information

1. Device for drying grain. - Patent RU 2323580. - Publ. 05/10/2008, Bull. No. 13.

Claims (1)

A device for drying food products containing a casing, the surface of which is covered with a layer of heat-insulating material, a transporting working element installed inside the casing, a loading hopper, an unloading window, heating elements, a fan and an air duct, characterized in that the casing is made in a rectangular section, the transporting working element is made in as an endless chain with perforated scrapers, a box with holes in its upper part is installed inside the casing, and the size of the holes does not exceed the minimum size of product to be moved, the lower branch of the chain with scrapers supported on the upper part of the duct, the duct is mounted on the side of the box, perpendicular to it and at an equal distance from the feed hopper and unloading window, and a duct mounted heating elements and a fan.

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