Pneumatic three-way diaphragm valve for explosive flow control

Abstract

The invention provides a pneumatic three-way diaphragm valve for explosive flow control. The pneumatic three-way diaphragm valve is characterized in that a pneumatic cylinder body is fixed onto a three-way pipe in a communicated manner and is coaxial with a discharge outlet, a diaphragm leaf is hermetically mounted at a joint of the pneumatic cylinder body and the three-way pipe and separates the pneumatic cylinder body from the three-way pipe, a piston is further arranged in the pneumatic cylinder body in a coupled manner and comprises a cylinder and a hemisphere, the radius of the hemisphere is equal to that of the cylinder, the hemisphere is fixed to one end of the cylinder, one end of the hemisphere is in contact with the diaphragm leaf, one end of the cylinder divides the pneumatic cylinder body to form a gas cavity, and a gas port is formed in the end, which is far away from the diaphragm leaf, of the pneumatic cylinder body. The pneumatic three-way diaphragm valve has the advantages that the flow speed of explosive fluid can be safely controlled; the pressure of the gas cavity is regulated by means of filling gas into the gas cavity or exhausting gas out of the gas cavity, so that the aperture of a fluid pipeline can be quickly and accurately controlled, and the flow rate of explosive slurry fluid can be regulated; a valve assembly and explosive are prevented from rubbing each other in valve opening and closing procedures.

Description

technical field [0001] The invention belongs to the field of explosives and relates to a three-way valve, in particular to a pneumatic three-way diaphragm valve used for flow control of explosives. Background technique [0002] Explosive slurry is a finished or semi-finished explosive fluid with a certain detonation capability. The fluid is flammable and explosive in impact, extrusion, collision, friction, static electricity and other environments. At present, aluminum diaphragm valves, copper spherical valves and metal diaphragm valves are mainly used to control the flow rate of explosive slurry. The aluminum diaphragm valve can reduce the electrostatic effect of the valve on the explosive, but during the opening and closing of the valve, there is a great danger of friction between the valve assembly and the explosive; the copper spherical valve and the aluminum diaphragm valve have the same Disadvantages; Chinese patent (publication number CN202510777U) discloses that a ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of low manual efficiency and poor safety due to friction or extrusion of existing valves used for explosive flow control, the purpose of the present invention is to provide a pneumatic three-way diaphragm valve for explosive flow control to achieve safety Good explosive fluid flow rate control

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