RU37325U1 - HAMMER CRUSHER - Google Patents

Description

HAMMER CRUSHER

The invention relates to devices for grinding materials and can be used in agriculture, mainly for crushing feed grain.

A multi-stage crusher is known, comprising a housing in which accelerating disks with hammers pivotally mounted on them are installed on the shaft, concentrically mounted with decks with separators adjacent to them from the end surfaces 1. With this scheme, the height of the crusher increases, which complicates the loading of material, and the use of several booster drives increases idle power costs.

Known two-chamber hammer crusher containing two corrugated rings of different diameters, forming grinding chambers, and the outer ring is closed with a perforated sieve 2. The grinding process in this crusher is characterized by high energy intensity, since the surface of the sieve does not inhibit the product flow, which provides a low impact speed and reduces grinding efficiency. In addition, the material crushed in the inner chamber is not discharged from the crusher, but enters the outer grinding chamber, where it is subjected to regrinding, which increases the energy consumption and worsens the uniformity of the granulometric composition of the finished product .-,.

Closest to the technical solution to the proposed invention is a hammer mill containing an inner and outer grinding chambers formed by concentrically arranged corrugated rings of various diameters, with louvered separators on the end surfaces of the chambers. With this scheme of operation, it is difficult to drain the finished product through the louvre separators due to the large accumulation of large particles at the periphery in the area of selection of the finished product, and also there is no effective allocation of unmilled particles to the second stun 3.

IPC 7 in 02С 13/02

the chamber is formed by two corrugated rings made in the form of truncated cones, mounted with large bases towards each other with a gap between them, and the outer one is formed by a ring made across the width of the grinding chamber. On the large bases of the cones are restrictive rings. Separating elements of the louvre type are made in the end surfaces of the chambers.

The use of conical grooved rings in the inner chamber, mounted by large bases of cones to each other, provides the mixing of large particles from the louvered separating surfaces, under the action of centrifugal force, to the annular gap, and then into the outer grinding chamber. Due to this, the separating surface is freed up for passage through it of the crushed particles obtained in the internal grinding chamber, thereby the material is not over-crushed. Boundary rings mounted on large bases of conical grooved rings create a layer of annular air-product flow in which large particles undergo preliminary grinding, and then, when a certain size is reached, they enter the outer grinding chamber.

Thus, in the aggregate of the indicated features, the novelty of the solution and drying is ensured; a substantial reduction in energy costs due to the quick removal of the finished product from the grinding zone, there is no over-grinding of the material.

The invention is illustrated in the drawing.

Figure 1 shows a diagram of a crusher; figure 2 section aa in figure 1.

The crusher contains a rotor 1 with short 2 and long 3 hammers mounted coaxially to the grinding chambers. The inner grinding chamber 4 is formed by two corrugated rings 5 made in the form of cones installed with a gap between them, and the outer 6 is formed by a ring 7 made across the width of the grinding chamber. Separating elements of the louvre type 8 are made in the end surfaces of the chambers. The material enters the crusher through the loading neck 9, the finished product is discharged to the precipitators 10. On the large bases of the cones of the rings 5, restrictive rings 11 are located.

Crusher works as follows. The material to be crushed under the influence of its own weight and vacuum created as a result of the rotation of the hammer rotor, through the loading neck 9 enters the inner grinding chamber 4, where it is crushed as a result of interaction with the short hammers 2 of the rotor 1 and the inner corrugated surface of the rings 5. Crushed to a certain size the material through the louvre-type separators 8 is discharged into the precipitators by a stream of air created by the hammer rotor 1. Part of the under-crushed product from the chamber 4 is inclined on the given plane of the rings 5 and bypassing the restriction rings 11 enters the outer grinding chamber 6 where it is crushed with long hammers 3 and discharged through separators 8. From precipitators 10, the finished product through the devices of the separation system enters the appropriate container.

Using a hammer mill allows you to get high-quality grinding of grain with minimal energy consumption.

1.Pat. 2166368 RF IPC В 02 С 13/14 Multistage crusher / V.R. Aleshchkin, N.F. Baranov, M.S. Poyarkov, V.P. Shulyatiev: publ. 03/20/2001. Bull. Number 8.

2 Danilin A.S. Compound feed production abroad. - M .: Kolos, 1968, S.9798.

3.Pat. 2202416 RF IPC В 02 С 13/02 Hammer crusher / V.R. Aleshchkin, P.F. Baranov, M.S. Poyarkov, A.S. Filinkov: publ. 04/20/2003. Bull. No. 11. - prototype. Applicant: Vyatka State Rector of the Academy

REFERENCES & ф :: --- ш ш,:.: .F i-i l Жданов С.Л. 5th RZYAI T1 & Women's Academy (

Claims (3)

1. Hammer crusher containing inner and outer grinding chambers formed by concentrically arranged corrugated rings of various diameters, with louvre type separating elements in the end surfaces of the chambers, a rotor with hammers of different lengths coaxial to the chambers, characterized in that the corrugated rings forming an inner chamber made in the form of truncated cones installed with large bases towards each other with a gap between them. 2. Hammer crusher according to claim 1, characterized in that on large bases of the cones restrictive rings are installed. 3. Hammer mill according to claim 1, characterized in that the restrictive rings are perforated.