RU129609U1 - CLEANING GRANULES COOLER - Google Patents

Abstract

Pellet cooler containing a cooling chamber with loading and unloading necks, characterized in that it contains a lock gate with a receiving hopper on the loading neck of the cooling chamber, designed to preserve the integrity of the granules and their uniform distribution, dividers located in the upper and lower parts of the cooling chamber separating the flow of granules, and on the side walls of the cooling chamber - slopes, woven mesh air inlets located at the bottom of the walls of the cooling chamber, pat ubock located in the upper part of the cooling chamber and connected via an air duct to the fan, at least one inspection window in the upper part of the cooling chamber for adjusting the level of granules, slide gates for withdrawing granules from the cooling chamber, sifting table in the form of a sieve enclosed in a suspension belts to the frame of the screening mill, which has the ability to perform oscillatory movements due to the eccentric shaft driven by an electric motor.

Description

The utility model relates to coolers for pressed bulk materials, namely feed and fuel pellets.

The granulation process has many advantages and is quite common in various fields of production and industries. Compared to alluvial feed, granular compound feed increases digestibility, reduces bacterial contamination, has improved storage conditions and a smaller volume. Granular fuel has a lower ash content and high environmental friendliness. As a result of granulation during pressing, the granules exit the press with a temperature above 75 ° C. Hot granules are fragile, easily crushed and destroyed. Therefore, immediately after production, they are cooled. Many granule coolers are known from the prior art, but the cooler closest in technical essence to the claimed utility model is the cooler described in patent SU 1210722 “Bulk Material Cooler”, priority date 08/16/1984, so we take it as a prototype.

The cooler described in the prototype comprises a cooling chamber in the form of a vertical louvre column with a loading and unloading neck, an unloading mechanism, and a mechanism for changing the unloading neck in the form of a two-shouldered lever, on one arm of which a metering damper is installed, and the other shoulder is connected with a regulator of its position while the positioner of the metering flap is made in the form of a vertical tray, the upper end of which is located at the level of the loading neck of the column, and associated with it letcho two-armed lever formed as a plate inclined relative to the wall of the unloading device to an angle smaller than the angle of friction of the granules of the plate plane.

The disadvantage of this design is that the prototype cooler is difficult to manufacture and has a high material consumption, which naturally leads to a rise in the cost of the device as a whole. Another disadvantage of the prototype is that the output of the finished product in addition to the granulated part contains the non-granulated part, a fine fraction and dust.

The task is to increase the efficiency of the device and expand the technological capabilities of the device.

The problem is solved by creating a cooler of granules with sifting, containing a cooling chamber with loading and unloading necks, according to a utility model, contains:

- a lock lock with a receiving hopper on the loading neck;

- to maintain the integrity of the granules and the uniform distribution of the product in the upper and lower parts of the cooling chamber, dividers separating the flow of granules, and on the side walls - slopes;

- woven mesh air inlets located at the bottom of the walls of the cooling chamber;

- a pipe located in the upper part of the cooling chamber and connected by means of an air duct to a fan, by means of which air is drawn from the chamber;

- at least one inspection window at the top of the cooling chamber to adjust the level of the granules;

- slide gates for outputting the product from the cooling chamber;

- a sieving table in the form of a sieve, enclosed in a sieving mill suspended on belts from the frame, which oscillates due to an eccentric shaft driven by an electric motor.

The utility model is illustrated by the following graphic material. Figure 1 is a General view of a cooler of granules with screening, Figure 2 is a view of a cooler of granules with screening in section.

This design provides a different principle of operation of the pellet cooler compared to the prototype due to its design. Namely, cooling occurs as follows. The cooling chamber 1 is filled with hot granules through a lock gate 2 mounted on the loading neck 3, with the fan 4 turned on and the shutter dampers closed 5. The granules are divided into two parts using the upper divider 6, rolled along it and fall onto the ramps 7, through which also roll up, fall on the lower divider 8 and are distributed in the discharge zone. Such a system of filling the chamber with granules significantly reduces the likelihood of damage to the granules, reduces the amount of dust. Slopes 7 change the direction of the air flow and thus create air turbulence intensifying the cooling process. Also, the lower divider 8 prevents the formation of "dead zones" in the cooling chamber 1, where stagnation of granules and no ventilation is possible. The chamber is filled with granules until they reach the maximum marking at the viewing window 9. As soon as the level is reached, the worker-operator turns off the lock gate 2 and the feeding of granules stops. The fan 4, connected to the pipe 10 for venting air through the duct 11, creates a vacuum, due to which air is sucked in through the air intake windows 12 from the woven mesh. The presence of a lock gate 2 prevents the intake of air through the loading neck 3. Absorbed atmospheric air passes through the granule layer in the chamber 1, cools the granules, reduces their moisture, captures the fine fraction and dust and exits through the nozzle 10. When cooled, the granules quickly harden and become marketable . As soon as the cooling time expires, the operator opens the slide gate 5 and the product flows by gravity from the cooling chamber to the sieving table. The sieving table is a sieving mill 13, suspended on belts 14 to the frame 15 and containing inside the sieve

16. The mill 13 oscillates due to the eccentric shaft

17. driven by an electric motor 18. Due to oscillatory movements, the non-granulated part, fine fraction and dust are sieved through a sieve 16. The conditioned product is discharged along the slope of the mill 13 through the discharge neck 19. The screened part is unloaded through the nozzle 20 for the non-granulated part and is fed to recyclable. The presence of a sieving table allows to improve the quality of the resulting product by separating it from the non-granulated part.

This design cooler granules with sifting can improve the efficiency of the device and expand the technological capabilities of the device.

Claims (1)

Pellet cooler containing a cooling chamber with loading and unloading necks, characterized in that it contains a lock gate with a receiving hopper on the loading neck of the cooling chamber, designed to preserve the integrity of the granules and their uniform distribution, dividers located in the upper and lower parts of the cooling chamber separating the flow of granules, and on the side walls of the cooling chamber - slopes, woven mesh air inlets located at the bottom of the walls of the cooling chamber, pat ubock located in the upper part of the cooling chamber and connected via an air duct to the fan, at least one inspection window in the upper part of the cooling chamber for adjusting the level of granules, slide gates for withdrawing granules from the cooling chamber, sifting table in the form of a sieve enclosed in a suspension belts to the frame of the screening mill, which has the ability to perform oscillatory movements due to the eccentric shaft driven by an electric motor.

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