RU2262443C2 - Press for granulating feed - Google Patents

Abstract

FIELD: agriculture mechanical engineering.

SUBSTANCE: press comprises two same gear wheels with radial openings in the hollows and side flanges. The gear wheels are provided with the separating flanges. The separating flanges are interposed between the adjacent rows of the radial openings. The outer diameter of the flanges is equal to the diameter of the dividing circumference of the wheel. The cross-section of the radial openings is made of a rectangle whose width is equal to the width of the teeth and length is equal to the distance between the teeth over the dividing circumference of the wheels.

EFFECT: enhanced efficiency.

1 dwg

Description

The invention relates to the field of agricultural engineering, and in particular to pelletizing and briquetting presses for feed and other materials.

A known press for briquetting hay, including gears with radial holes in the troughs / 1 /.

The disadvantage of this invention is the wear of the inlet of the radial holes, leading to frequent replacement of gears, and lateral displacement of feed, which reduces the performance of the press and increases the energy intensity of the process.

The closest technical solution is a hay briquetting press / 2 /, which includes two identical gears with radial holes in the cavities, interchangeable inserts with holes located coaxially with the radial holes of the gears, and the gears are equipped with side flanges. Inside the wheels are knives.

The disadvantage of this device is the incomplete use of the area of the depressions for the living section of the pressing channels, which reduces the productivity of the press and causes additional energy costs for compressing the feed on the bridges between the holes.

The objective of the claimed technical solution is to reduce energy costs for granulation and increase productivity of the press.

It is solved by the fact that in the proposed device, the radial holes are made of rectangular cross section with a width equal to the width of the tooth and a length equal to the distance between the teeth along the pitch circle, and the gear wheels are equipped with dividing flanges installed between adjacent rows of radial holes, and the outer diameter of the dividing flanges equal to the diameter of the pitch circle of the gears.

The drawing shows a press for granulating feed. The press includes two identical gears 1 with pressing channels 2, made of rectangular cross-section with sides: a - equal to the width of the tooth; b - equal to the distance between the teeth along the pitch circle of the wheels.

The gears are equipped with dividing flanges 3 installed between adjacent rows of radial holes, the number of which depends on the number of rows of pressing channels, and side flanges 4. The outer diameter of the dividing flanges is equal to the diameter of the pitch circle of the gears. Inside the gears 1 are fixed knives 5.

Press for granulation of feed is as follows.

The feed from the feed hopper (not shown in the drawing) fills the troughs of the rotating gears 1. When the tooth top of one gear enters the trough of the other, the feed is compressed and completely pressed into the pressing channel 2. The back pressure necessary to compress the feed is provided by friction forces, arising between the compressed feed and the inner surface of the radial pressing channel. The granules formed leave the channels and break off with knives 5.

The absence of jumpers between the holes, on which the feed is uselessly compressed, eliminates the wear of the inlet of the holes and reduces the energy costs of granulation. Transferring the beginning of the pressing channel from the bottom of the cavity between the teeth to the pitch circle increases the length of the channel, which reduces the thickness of the wheels (increase the inner diameter of the wheels) and reduce the metal consumption of the press. Full use of the surface of the cavity under the pressing channel helps to increase the productivity of the press by 40-60%.

Sources of information

1. UK patent No. 1153862, CL A 2 B, 1969 (analogue).

2. A.S. USSR No. 703063, class ² A 01 F 15/08. Bull. 46, 1979 (prototype).

Claims (1)

A feed pelletizing press comprising two identical gears with radial holes in troughs and with side flanges, characterized in that the gears are provided with dividing flanges installed between adjacent rows of radial holes, the outer diameter of the flanges being equal to the diameter of the pitch circle of the wheels, and the radial the holes are made in a rectangular section with a width equal to the width of the tooth of the wheel, and a length equal to the distance between the teeth along the pitch circle of the wheels.