Manual pipe clamp valve

Abstract

The invention discloses a manual pipe clamp valve. A limiting ring is fixedly connected to the top of a valve body, a first threaded hole is formed in the middle portion of the limiting ring, the limiting ring is movably connected with a driving screw through the first threaded hole in the limiting ring, the other end of the driving screw is fixedly connected with a pressing rod, a supporting plate is fixedly connected to the end, close to the limiting ring, of the valve body, a decompression device is arranged at the end, far away from the limiting ring, of the valve body and comprises an upper pressing plate, a lower pressing plate, a spring assembly, a limiting plate and a damping plate, the lower pressing plate is fixedly connected with the inner wall of the valve body, one side of thelower pressing plate is fixedly connected with one side of the damping plate, the other side of the damping plate is movably connected with the limiting plate, the upper pressing plate is fixedly connected to the top of the limiting plate, one end of the spring assembly is fixedly connected with the lower pressing plate, and the other end of the spring assembly is fixedly connected with the upperpressing plate. By means of the manual pipe clamp valve, the phenomenon of rubber pipe damage caused when pressure of the pressing rod is overloaded is effectively avoided, and the service life of arubber pipe is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of pipe pinch valves, in particular to a manual pipe pinch valve. Background technique [0002] In contemporary industry, when some solid or liquid products containing abrasive substances such as particles, powder, fibers, and viscous pulp are transported through pipelines, or some chemical processes contain corrosive media, manual pinch valves are the best choose. [0003] With the manual pinch valve of the prior art, it is difficult to control the closing force when the hand wheel is used to close the rubber hose. When the force is too large, the pressure on the rubber hose will be overloaded. After a long time of use, the rubber hose is prone to damage and is cut short. The service life of the hose. Contents of the invention [0004] The purpose of the present invention is to provide a manual pipe pinch valve to solve the problems raised in the above-mentioned background technology. [0005] In order...

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Problems solved by technology

[0003] The manual pinch valve in the prior art is difficult to control the closing force when the hand wheel is used to close the rubber hose. When the force is too large, the pressure on the rubber hose will be overloaded. After a long time of use, the rubber hose is prone to damage and is cut short. Hose life

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