SU1570758A1 - Hammer crusher - Google Patents

Abstract

This invention relates to a device for crushing material. The goal is to reduce the energy intensity of the grinding process. Hammer crusher includes a housing 1, inside of which is located a rotor 2 with articulated hammers 3, under which there is a grate. Hammers in longitudinal and transverse sections, and grate cross-sections in the shape of a hexagon with opposite sharp angles of 45-60 °. At the same time, on the working surfaces of hammers and grates, a notch is made at an angle of 30-50 ° relative to their longitudinal axes, and the notch direction on the hammers is opposite to the notch direction on the grate. 2 Il.

Description

The invention relates to a device for crushing material and can be used in the construction, energy and other industries.

 The purpose of the invention is to reduce the energy intensity of the grinding process.

Figure 1 shows the hammer crusher, a cross-section; in fig. 2 is a sectional view of FIG.

The hammer crusher comprises a housing 1, inside of which is placed a rotating rotor 2 with hammers 3, made in transverse and longitudinal section in the form of a hexagon with sharp opposite angles of 45-60 °.

 On the working surface of the hammers 3 there is a notch positioned at an angle of 30-50 ° relative to the longitudinal axis of the hammer 3. In the lower part of the rotor 2, a grate is installed with grate 4 located across the rotor 2, having a hexagon shape in cross section with opposite angles of 45- 60 ° and a notch made at an angle of 30-50 ° relative to the longitudinal axis and oppositely directed notch hammers 3. Performing an acute angle of hammers less than 45 reduces durability and requires frequent sharpening of the working surface. Making an angle greater than 60 ° reduces the efficiency of the grinding process and increases energy costs. Making the hammers double-edged both in the transverse and in the longitudinal section allows the hammers to be rearranged to another pointed surface (the hammer can work with mutually opposite sides). Making the notches, as shown by experimental studies at an angle of 30-50 relative to the longitudinal axis, allows the materials to be crushed more intensively. Making grates with a bevel angle corresponding to the angle of the point of the hammers, t, makes it possible to increase the efficiency of the grinding process and reduce energy consumption, since there is a decrease in frictional forces. Making notches on the grates located perpendicularly to the notches of hammers contributes to a more intensive cleavage of wood along the fibers on the grate. This condition turned out to be the most effective at nz — shallowing of the peat wood

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deposits, in which the fibers have a tortuous direction, sharply changing in its structure.

In the upper part of the rotor 2, a loading nozzle 5 is installed, a baffle plate 6, below which an anvil 7 is mounted.

Crusher works as follows.

The material to be crushed is fed tangentially into the grinding zone through the loading nozzle 5. Hit by a rotating rotor 2 with hammers 3, the material is cut into pointed surfaces of hammers 3 into smaller pieces that are dropped on the baffle plate 6, are retained on it, cut by hammers 3 the next row into smaller particles, subjecting it to secondary crushing.

Claims (1)

Then, the counter knife 7 is passed, the choke also undergoes grinding, the material falls on the grate 4. Here the final stage of grinding of the material takes place. At the same time, due to centrifugal forces, the material is pressed to the grate 4, on the whole surface of which under the action of hammers 3, it gradually breaks down by grates 4. The material, the passage between the grate 4 and hammers 3, falls on the grate 4, which has a bevel angle corresponding to the angle of the hammer point 3, providing entry of material into the inter-grid spaces. Invention Formula A hammer crusher comprising a housing in which a rotor with articulated hammers with a bevel in the direction of rotation of the rotor, fender blades and a grate located along the rotor are located on a horizontal shaft, and the hammers are longitudinal to reduce the energy intensity of the grinding process and the cross sections, and the grate bars, in the transverse section, have the shape of a hexagon with opposite acute angles of 45-60 °, while on the working surfaces of the hammers and the grate, a notch is made at an angle of 30-50 ° flax their longitudinal axes, the direction of the sipe in the direction opposite hammers notches on the grate with 1