Pulse backflush valve

Abstract

The invention relates to the technical field of pulse backflush valves, in particular to a pulse backflush valve. The pulse backflush valve comprises an electromagnetic valve body, a valve deck, a valve body, a membrane, a jetting port and an air pocket. A first cavity is formed in the top end of the valve body. A second cavity is formed in the bottom end of the valve body. A movable valve core is arranged in the electromagnetic valve body and connected with a rubber mat extending into the first cavity. The second cavity is divided into an upper cavity body and a lower cavity body through the membrane. An upper pressing plate is arranged on the top face of the membrane. A lower pressing plate covering the jetting port is arranged on the bottom face of the membrane. The lower cavity body is connected with the air pocket. The valve body is further provided with a through hole which communicates with the first cavity and the second cavity. A pressure relief hole is formed in the first cavity. The upper cavity body in the second cavity is provided with a constant pressure pipe. The lower cavity body in the second cavity is provided with a throttling hole. A reset spring connected with the valve body is arranged in the center of the upper pressing plate. A plurality of buffer cushions are evenly distributed on the outer edge of the upper pressing plate. An annular groove is formed in the contact face of the lower pressing plate and the jetting port. A seal ring is arranged in the annular groove. The pulse backflush valve is good in sealing effect and long in service life.

Description

technical field [0001] The invention relates to the technical field of pulse blowback valves, in particular to a pulse blowback valve. Background technique [0002] Pulse valve refers to a diaphragm valve that can be controlled by electromagnetic or pneumatic pilot valves and can instantly open and close high-pressure air sources to generate pulses; the pulse valve is the main component of the bag filter, and the injection can reach more than 1 million times; the current pulse valve The connection between the gas bag and the blowing pipe is blocked by a diaphragm, but the sealing effect of the diaphragm is not strong, and it is easy to make the gas in the gas bag flow into the blowing pipe, causing the blowing pipe to be in a state of gas for a long time; and the diaphragm is easily damaged, which affects the use life. Contents of the invention [0003] The purpose of the present invention is to provide a pulse blowback valve with good sealing effect and long service life...

AI Technical Summary

Problems solved by technology

[0002] Pulse valve refers to a diaphragm valve that can be controlled by electromagnetic or pneumatic pilot valves and can instantly open and close high-pressure air sources to generate pulses; the pulse valve is the main component of the bag filter, and the injection can reach more than 1 million times; the current pulse valve The connection between the gas bag and the blowing pipe is blocked by a diaphragm, but the sealing effect of the diaphragm is not strong, and it is easy to make the gas in the gas bag flow into the blowing pipe, causing the blowing pipe to be in a state of gas for a long time; and the diaphragm is easily damaged, which affects the use life

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