Double-roller type crushing sand making machine with adjustable tightness degree

Abstract

The invention discloses a double-roller type crushing sand making machine with the adjustable tightness degree. The double-roller type crushing sand making machine comprises a drive roller and a driven roller; the axis of the drive roller is parallel to that of the driven roller; drive roller end shafts arranged on the two sides of the drive roller are rotatably installed on a rotary arm; the rotary arm is rotatably installed on a bearing of a rotary bearing pedestal through a rotary shaft; the top end of the rotary arm is connected to a rotary arm pressing plate which is parallel to the axisof the drive roller in the length direction of the drive roller; a pressure exerting air bag capable of conducting inflating and deflating is arranged between the rotary arm pressing plate and the topof a rack; a drive roller bearing pedestal is installed on the rotary arm, and the drive roller shaft end is rotatably installed on the drive roller bearing pedestal; a jacking plate is arranged on the top of the rack, and air bag grooves used for allowing the upper end and the lower end of the pressure exerting air bag to be embedded are symmetrically formed in the opposite faces of the rotary arm pressing plate and the jacking plate; the pressure exerting air bag conducts inflating and deflating through an air compressor; and a compressed air pipeline is connected to the air compressor.

Description

[0001] The present invention patent application is a divisional application of Chinese Patent Application No. 201510485156.8, the original application number is 201510485156.8, the filing date is August 10, 2015, and the name of the invention is a pair of roller crushing sand making machine. Technical field [0002] The invention relates to a sand making machine, in particular to a pair-roller crushing sand making machine with adjustable elasticity between an active roller and a passive roller. Background technique [0003] A sand making machine that crushes massive stones into fine sands, currently generally consists of two rollers (active roller and passive roller) whose axes are on the same horizontal plane. The stone is crushed after passing between the two rollers. ; During the long-term design and actual use of the crushing machine, we found that the existing sand making machine that uses two rollers for crushing has the following defects: [0004] 1. Two rollers located on th...

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Problems solved by technology

[0004] 1. The two rollers located on the same plane generally need to design a complex structure to realize the single-drive two rollers to rotate in opposite directions; The power drives the motor, which consumes a lot of energy;

[0005] 2. For some new designs, the gap between the two rollers is set to be very small, even 0, so that only one driving roller can be driven to realize the simultaneous rotation of the two rollers, but this This structure wears a lot on the roller, and the noise is also very loud;

[0006] 3. We also found in actual work that when there is iron or other debris that cannot be crushed between the two rollers, the damage to the roller is very large.

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