RU1804909C - Hammer crusher - Google Patents

Abstract

Usage: in devices for grinding in agricultural machinery. The hammer crusher contains a crushing chamber with installed in. a rotor, a sieve and partitions located perpendicular to the axis of rotation of the rotor. Partitions and traps are made on both sides of the grinding chamber, the diameters of the holes in the partitions are made to increase with distance from the axis of rotation in proportion to the increase in the radius of the chamber is smaller, and the traps are connected to the fan. On the surface of the partitions rotated inside the grinding chamber, spiral guides are fixed symmetrically relative to the axis of rotation of the rotor in such a way that with their concave surface they are turned towards the direction of rotation of the rotor, and the beginning of their turns are in contact with the sieve. 1 s.p. f-ly, 2 ill. (l with

Description

The invention relates to milling devices and can be used in the agricultural and animal feed industry.

The aim of the invention is to reduce energy consumption and improve product quality.

Figure 1 shows a hammer crusher; in Fig.2 - section aa in Fig.1.

The hammer crusher comprises a grinding chamber 1 with a hammer rotor 2 installed in it. The grinding chamber is made in the form of a sieve 3 located around the circumference and partitions 4 mounted perpendicular to the axis of rotation of the rotor. Partitions 4 have holes 5, the diameters of which increase as

their removal from the axis of rotation of the rotor is proportional to the increase in the radius of the grinding chamber. Spiral guides 6 are fixed on the partitions 4. From the side opposite to the grinding chamber, a trap 7 is connected to the partition and connected to the fan 8.

Molotkova crusher works as follows.

The grain from the loading device enters the crushing chamber 1, where it is crushed as a result of repeated interaction with the hammer rotor 2. In this case, the particles are entrained in a rotational motion, as a result of which a ring is formed from the air-product mixture. In the border areas with partitions 4 zones

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The stifled product mixture moving along the sieve 3, having reached the spiral guides 6, is removed by them from the sieve 3 and spirals towards the center of the grinding chamber. When moving around a circle with a radius decreasing towards the center of the grinding chamber, particles of the air-product layer under the action of centrifugal forces brake and pass through the holes of the partitions 4, falling into the trap 7, from where they are sucked off due to the vacuum created by the fan 8.

Dust particles of the product from the grinding chamber will also be removed through the baffles 4, without falling into the zone of influence of the hammer rotor 2 and sieve 3.

As a result of additional removal of the crushed product from the crusher through the side walls 4, its degree of uniformity is increased and energy consumption is reduced.

Claims (2)

1. Hammer mill, containing a crushing chamber with a hammer rotor, 0 5 0 under which there is a sieve, a baffle with openings installed perpendicular to the axis of rotation of the rotor, behind which a trap is placed, characterized in that, in order to reduce energy consumption and improve the quality of the product, the crusher is equipped with an additional baffle with openings, behind which an additional trap is formed, with the radii of the bore holes and the crushing chamber proportionally increasing from the axis of rotation of the rotor, and a fan connected to the traps is mounted behind the crushing chamber. 2. Crusher according to claim 1, characterized in that spiral guides are mounted symmetrically to the axis of rotation of the rotor on the surfaces of the baffles facing the inside of the crushing chamber, facing inward to the direction of rotation of the rotor, and the beginning of the turns are in contact with the sieve .. ICH Vut.2