RU2567512C1 - Hammermill hammer - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: hammermill hammer comprises a suspension (1) with a hole (2) for fixation on a rotor and an impact part (3) with triangular corrugations at external surface. The impact part is installed as capable of rotary motion on a suspension via a sliding bearing (4). The bearing is installed on the suspension along the entire length of the inner surface of the impact part.

EFFECT: increased durability and efficiency of crushing.

1 dwg

Description

The invention relates to devices for grinding materials, in particular to the structural elements of hammer crushers, and can be used in the construction, mining and other industries.

Known hammer hammer mill, containing a suspension with a hole for mounting on the rotor and the impact part with a profiled outer surface, rigidly connected to the suspension. The shock part of the hammer is equipped with teeth located perpendicular to the axis of the suspension. In this case, the adjacent teeth are made parabolic and wedge-shaped (copyright certificate SU 893255, M. Cl. B02C 13/28).

The main disadvantages of the known hammer of the hammer crusher are low durability and crushing efficiency, as well as the reduced quality of the material being destroyed, since the impact of the crushed material falls on one side of the hammer due to the inability to rotate the shock part relative to the suspension, which leads to uneven wear of the hammer.

The closest analogue to the invention according to the technical essence and the achieved result is a hammer hammer mill containing a suspension having a hole for mounting on the rotor, and a shock part with a profiled outer surface mounted on the suspension through a rolling bearing and having the possibility of rotational movement. The shock part, made in the form of a rod, is provided with spiral grooves. The suspension hole for mounting on the rotor is made perpendicular to the hole in which the shock part is placed. The rolling bearing is installed in the suspension hole as a support for the rotation of the shock part. As a rod, a spiral drill can be used (patent RU 2200625, IPC7 B02C 13/28).

The main disadvantages of the described hammer hammer mill are reduced durability, since the presence of a rolling bearing reduces the stability of the structure to high dynamic loads, reduced crushing efficiency and the quality of the material being destroyed, since the implementation of the shock part in the form of a rod with spiral grooves does not provide the creation of splitting and bending effects on surface crushed material.

The objective of the invention is to increase the durability of the hammer of the hammer mill and crushing efficiency, as well as improving the quality of destructible material.

The task is achieved in that in the hammer of the hammer mill, containing a suspension with a hole for mounting on the rotor, the shock part with a profiled outer surface mounted on the suspension through the bearing and having the possibility of rotational movement, according to the invention, the shock part is provided with triangular corrugations, while using a bearing sliding mounted on the suspension along the entire length of the inner surface of the shock part.

The increased durability of the hammer of the hammer crusher is due to the introduction of a sliding bearing, which contributes to the rotational movement of the crushing surface and ensures the stability of the bearing unit to dynamic loads.

The increase in crushing efficiency is due to the implementation of triangular corrugations on the shock part of the device, providing additional fracture of the material and the appearance of bending stresses in the material.

Improving the quality of destructible material is also due to the implementation of triangular corrugations on the impact part of the device, which contributes to the formation of a cube-shaped material.

The invention is illustrated in the drawing, which schematically shows a General view of the hammer of the hammer crusher.

The hammer of the hammer mill contains a suspension 1 with a hole 2 for mounting on a rotor (not shown in the drawing) and a shock part 3 with a profiled circular outer surface mounted on a suspension 1 through a sliding bearing 4 and having the possibility of rotational movement around the axis of the suspension 1. Impact part 3 the hammer is equipped with triangular corrugations and can be tightened with a nut 5. The sliding bearing 4 is mounted on the suspension 1 along the entire length of the inner surface of the impact part 3.

The hammer hammer mill operates as follows. When the rotor of the crusher rotates with a hammer, effective blows are applied to the milled material and, thanks to triangular corrugations on the surface of the hammer part 3, an additional fracture of the material is provided in which bending stresses appear, which contributes to the formation of a cuboidal material. Due to the fact that the shock part 3 is connected to the suspension 1 through the sliding bearing 4, it rotates around the axis of the suspension 1, thereby ensuring uniform wear of the entire shock part 3, thereby increasing the durability of the hammer.

Thus, the use of the proposed hammer hammer mill allows for its increased durability and crushing efficiency, as well as improving the quality of the crushed material.

Claims (1)

Hammer of a hammer crusher comprising a suspension with a hole for mounting on the rotor, a shock part with a profiled outer surface mounted on the suspension through the bearing and having the possibility of rotational movement, characterized in that the shock part is provided with triangular corrugations, using a sliding bearing mounted on the suspension along the entire length of the inner surface of the shock.