Air pumping valve capable of preventing dust blockage
A technology for extracting air valves and dust, which is applied in the direction of lifting valves, valve devices, material separation, etc. It can solve the problems that the air extraction process cannot be carried out, and achieve the effects of simple structure, easy replacement, and convenient installation and disassembly
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[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0013] Such as figure 1 As shown, a kind of exhaust valve of the present invention that can prevent dust from clogging comprises a pressure cap 1, a bolt 2, a movable rod 3, an air intake valve body 4, a push rod 5 and a rotary handle 6, the inner chamber wall of the pressure cap 1 and The upper part of the outer wall is respectively connected with the bolt 2 and the gas-taking valve body 4 through threads, and the lower part of the outer wall of the pressure cap 1 is provided with an installation thread compatible with the thread of the interface base 7 welded on the grinding sample disc.
[0014] The center of the bolt 2 is also provided with a coaxial through hole 21, the pressure cap 1 is provided with an opening corresponding to the through hole 21, the lower end of the movable rod 3 is arranged in the through hole 21, and the up...
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