SU977011A2 - Hammer mill - Google Patents

Description

(54) HAMMER CRUSHER

The invention relates to a device for grinding materials, namely hammer crushers, and can be applied in the construction, mining and other industries.

According to the main author. St. No. 808133 is known hammer crusher, which includes a crushing chamber formed by a set of rotating rings, and a rotor with hammers, installed outside the crushing chamber with the possibility of passing hammers in the gaps of the rings, and the crushing chamber is equipped with guiding means installed over the outer diameter of each ring

JV

The disadvantage of this hammer mill is its low efficiency.

The purpose of the invention is to increase the efficiency of the crusher.

This goal is achieved by the fact that in the hammer crusher under the rotor, counting along its rotation, a crushing and reflective plate is mounted, the latter being located to the vertical plane at an angle of 5-15 °, directed towards the discharge of material.

FIG. 1 shows a hammer, a crusher, a cross-section; in FIG. 2 - the same, longitudinal section.

Hammer crusher includes case frame 1, crushing chamber 2, rings 3, rotor 4 with hammers 5, support rolls 6, drive of the rotor and support rolls, guide rolls 8, crushing plate 9, reflector plate 10 and inclined tray 11.

The crushing chamber 2 is formed by a set of rings 3 installed in the grooves of the grooves of the supporting 6 and guiding 8 rolls.

15

The rolls b and 8 are supported by bearings mounted in the housing frame 1.

The number of rings is equal to the number of groove grooves on the rolls 6 and 8.

20

The rotor 4 is placed at the bottom of the rings, and in such a way that the ends of the hammers 5 can pass into the gaps between the rings 3 and insert into the space of the grinding chamber 2.

25

The crushing plate 9 is installed in the lower corner of the crusher so that the ends of the rotor hammers form a certain gap with its working surface. The gap size is regulated and determined by the required grinding size. The working surface of the grinding plate has rifles.

The reflective plate 10 is set to the lower corner of the crusher R opposite the fractional plate. The working surface of the reflective plate is smooth, and it should be located at an angle oi within limits relative to the vertical plane. Selection of the angle of dictation for the best rolling of the material on the plate.

The gap between the ends of the rotor hammers and the working surface of the plate is not limited.

The crusher body frame in the longitudinal direction is set at an angle (4-8 °) with respect to the horizontal surface.

Crusher works as follows.

The material to be crushed is fed into the crushing chamber 2 through chute 11. As a result of the joint rotation of the rings 3, which is carried out by drive rollers b, the material, continuously sifting, moves in the crushing chamber on a slope in the longitudinal direction. During movement, the material gets under the ends of the hammers of the fast-rotating rotor and is destroyed by them.

Small pieces of crushed material spill down through the gaps between the rings and fall into the space between the crushing plate and the rotor hammers. In this space, further crushing of the material takes place.

At the same time, under the action of rotation of the rotor, the crushed material begins to move at high speed in the direction shown in FIG. arrows a.

The redemption of the inertial forces of the material converging from the crushing plate, as well as its further grinding, occurs due to the impact with the reflective plate 10.

By applying the invention, the efficiency of the crusher is improved.

Formula of Invention

Molotkova crusher on author. St. No. 808133, differing from the fact that, in order to increase the efficiency of the crusher, a crushing and reflecting plate is mounted under the rotor, counting along its rotation, the latter being located to the vertical plane at an angle of 5-15, directed toward the discharge of material .

Sources of information taken into account in the examination

1. USSR author's certificate No. 808133, cl. B 02 C 13/02, 1977.

Claims (1)

Claim Hammer Crusher St. No. 808133, characterized in that, in order to increase the efficiency of the crusher, under the rotor, counting along its rotation, crushing and reflective plates are mounted, the latter being located to the vertical plane at an angle of 5-15 °, directed towards the discharge side of the material.