Discharge valve for shot blasting equipment

Abstract

The invention relates to a discharge valve for a shot blasting equipment. The discharge valve comprises a valve body, a valve plate and an opening and closing mechanism, a cover plate is arranged on the top face of the valve body, a discharging pipe which extends from top to bottom and is inserted into the valve body is arranged on the cover plate, a feeding port is formed in the top of the discharging pipe, and a discharging flange plate is arranged at the bottom of the valve body; an obliquely-arranged baffle is arranged at the bottom of the discharging pipe, an opening corresponding to the baffle in position is formed in the side portion of the discharging pipe, and the upper part of the valve plate is hinged to the discharging pipe; and the opening and closing mechanism comprises an air cylinder and a connecting rod, the air cylinder is horizontally installed on the valve body, one end of the connecting rod is hinged to a piston rod of the air cylinder, and the other end of the connecting rod is hinged to the lower part of the valve plate. The feeding speed of shots can be increased, and the service life of the discharge valve is prolonged.

Description

technical field [0001] The invention relates to a discharge valve of shot peening equipment, which belongs to the technical field of shot peening and sand blasting. Background technique [0002] Shot peening is a surface strengthening process widely used at present, that is, using pellets to bombard the surface of the workpiece and implanting residual compressive stress. It is a cold working process that improves the fatigue strength of metal parts and improves the mechanical properties of the workpiece surface. The mechanical strength of the parts, as well as the resistance to wear, fatigue and corrosion, have been measured for decades. [0003] When the shot blasting equipment is in use, the shot blasting material stored in the shot blasting tank is sprayed out by high-pressure gas. When the shot blasting tank is insufficient, the material is replenished through the unloading valve set above the shot blasting tank. . At present, the discharge valves commonly used in shot...

AI Technical Summary

Problems solved by technology

At present, the discharge valves commonly used in shot peening equipment mostly use pneumatic ball valves. Due to the special requirements of shot peening, when the shot passes through the pneumatic ball valve, the pneumatic ball valve is opened and closed, which is easy to wear its seal, resulting in poor closing of the pneumatic ball valve and even damage to the pneumatic ball valve. The ball valve, resulting in a short service life of the pneumatic ball valve

[0004] As far as the applicant knows, there is also a plug-in valve on the market that opens directly below the pill flow channel (that is, a plug-in plate is installed at the opening). However, when the plug-in valve is opened and closed, the plug-in plate is easily damaged. The shot is stuck, which affects the sealing effect; moreover, during the insertion and removal process of the plug-in plate, the opening changes from large to small or small to large, resulting in uneven flow of shot and affecting the use efficiency

[0005] In order to increase the feeding speed of the shot blasting tank, it is necessary to apply pressure gas to the pellets during unloading, but the applicant's test shows that after the pressure gas is applied, the flow rate of the pellets becomes faster, and the wear of the pneumatic ball valve is more serious, resulting in pneumatic The service life of the ball valve is further shortened; and the plug-in valve is more likely to get stuck after the shot feeding speed is accelerated, and may even affect the normal use of the shot blasting equipment due to poor sealing effect

Images