SU1319898A1 - Screw crusher - Google Patents

Abstract

The invention relates to screw crushers with a working tool and can be used in the mining, construction and other industries. The goal is to eliminate over-crushing of the rock mass and increase crusher productivity. During the operation of the crusher, the ground mass enters the rotating shafts of the screw-screws 2 of the lower row and under pressure of the lateral surface of the turns of the auger winding begins to move along the longitudinal axis of the crusher, although the pieces of the rock mass, not exceeding the size of the auger winding niara and the distance between the body of a number of located screw shafts 2 (i.e., the outlet openings formed by the protrusions and depressions of the shafts of the lower row) is transferred into the reinforcement space on the conveyor belt. The large pieces of rock mass, mixed further to the crusher's discharge opening, come into contact with the auger shafts 3 of the upper row and are crushed between them and the auger shafts 2. Simultaneously with the crushing of the big pieces, there is a continuous transition of the newly formed pieces, not exceeding , but to the size of the outlet openings of the lower row of shaft-screws 2, into the undersize space on the conveyor belt. Some of the crushed pieces are discharged through a discharge opening at the outlet of the crusher. 1 h. n f-ly, 2 ill. S eaten AA-oo; oo o 00 oe. 2

Description

H soepereHife refers to crushers with a screw working body and can be used in the mining, metallurgical and construction industries.

The purpose of the invention is to eliminate over-grinding of the rock mass and increase the productivity of the crusher.

FIG. 1 shows a screw crusher, shear, view; in fig. 2 shows section A-A in FIG. one.

The screw crusher comprises a housing 1 with horizontally or close to horizontal lower rows of screw augers 2 and upper rows of screw augers 3 located on it. On each side of the working member there are side screw shafts 4 preventing the early unloading of the mountain masses from the bottom row of shaft seamstresses 2. Shaft augers 3 of the upper row are located at an acute angle and mixed, forward (in the direction of the rock mass) relative to the bottom row of shaft augers 2. Shaft augers are supported on support bearings 5 installed in the housing near zagr full-time openings, and the thrust bearings 6 mounted in the housing near the discharge opening. Vrashayush, the moment the shaft-augers is transmitted from the electric motor 7 through a system of gear gears 8. The horn mass is loaded into the screw crusher through the chute 9.

The turns of the screw winding of the arranged screw shafts 2 form between themselves and along the entire length of the crusher the outlets, and the maximum size of the outlets formed by the protrusions and depressions of the screw shafts 2 of the lower row does not exceed the discharge opening at the outlet of the crusher. When electric motors 7 are turned on, the torque is by means of a set of gears 8 transmitted to shafts augers 2 and 3. A horn mass through a chute 9 gets into the shaft of augers 2 of the lower row and under pressure from the side surface of auger winding of shafts 2 begins to move along the longitudinal axis of the crusher, with the pieces of rock mass not exceeding the size of the auger coil pitch and the distance between the body of a series of shafts 2 auger shaft 2 passing into the undersize space and subsequently crushing the rock

the masses are not involved (therefore, there is no overgrinding of this part of the rock mass).

The large pieces of rock mass, moving further to the discharge opening, come into contact with the shaft-screws 3 of the upper row and are crushed between them and the shaft-screws 2. The side shaft-screws 4 prevent the premature lateral unloading of the large pieces. Simultaneously with the crushing of large pieces, a continuous process of transition of newly formed pieces, not exceeding in size the schagov auger winding and the distance between the body of a number of located screw augers 2 (i.e., through the outlets), into the under-bed space (for example, on a ribbon) occurs. conveyor), which eliminates the energy costs of regrinding and this part of the rock mass. Some of the pieces crushed to the required size are discharged through a discharge opening at the outlet of the crusher.

In the case of jamming in the discharge opening of the crusher of pieces of rock mass, the latter are pushed out of it by the projecting part of the screw-shafts 3.

The use of the proposed screw crusher provides a significant reduction in energy costs for crushing and moving the rock mass due to the elimination of its overgrinding. In addition, the performance of the proposed crusher increases.

Claims (2)

1. Shnekov crusher, including a housing with crushing elements installed in it in the form of a screw-shafts and a drive, characterized in that, in order to eliminate over-crushing of the rock mass and increase the productivity of the crusher, the screw-shafts installed in two rows one above the other, with the lower row installed horizontally, and the upper is located at an acute angle to it, with the maximum size of the outlet openings formed by the protrusions and depressions of the shafts of the lower row, does not exceed the discharge opening. 2. A crusher according to claim 1, characterized in that the upper row of screw shafts is displaced forward relative to the lower row of screw shafts. Srig. one