Vacuum pump piston crashproof structure

• Main Author: TAO BAOLONG
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a vacuum pump piston crashproof structure, locate the piston of vacuum pump on, the vacuum pump includes two air suction mechanism, air suction mechanism include the cylinder and connect hermetcally in valve plate on the cylinder, the piston hold in among the cylinder, two valve openings have been seted up on the valve plate, the top of valve plate sets up sealed one the last valve of valve opening, the bottom of valve plate sets up seals another the lower valve of valve opening, the top surface of piston set up one with the recess that lower valve position corresponds. Because the utility model discloses a set up the recess with the lower relative position of valve in the vacuum pump on the piston, though consequently under the piston has just begun descendingthe time valve warp downwards, the piston also can utilize this recess and valve down to avoid, effectively prevents down valve percussion piston, has reduced the noise and the structural damage riskof vacuum pump during oper