Three-stage exhaust and waterproof hammer type air valve

Abstract

The invention discloses a three-stage exhaust and waterproof hammer type air valve, which relates to the technical field of pipeline conveying water exhaust. An air cylinder and a holding cavity are arranged in a lower valve body; a guiding protection cylinder is arranged on the lower end of the holding cavity; an opening is formed in the bottom part of the guiding protection cylinder; a floater is arranged in the holding cavity; a drainage hole is formed in the bottom part of the lower valve body; the floater is formed by an upper floater and a lower floater; the upper floater is formed by anupper floater component I and an upper floater component II; an opened holding piston is arranged between the upper floater component I and the upper floater component II; a trace exhaust port is formed in the piston; a piston cylinder is arranged on the bottom end of the upper floater component II; a piston cylinder vent hole is formed in the middle of the piston cylinder; a small-amount exhaustport is formed between the piston and the upper floater component I; an upper valve cover is connected to the top part of the lower valve body; a big exhaust port is formed in the middle of the uppervalve cover; and the pore diameter of the big exhaust port is smaller than the diameter of the upper floater. The three-stage exhaust and waterproof hammer type air valve provided by the invention has the beneficial effects that the phenomena of valve sealing and metal run out can be effectively avoided, and the three-stage exhaust and waterproof hammer type air valve is not easy to damage, highin exhaust efficiency, and less in environment pollution.

Description

technical field [0001] The invention relates to the technical field of pipe transport water exhaust, in particular to a three-stage exhaust and hammer-proof air valve. Background technique [0002] At present, in the existing technology, in order to ensure that the water pipeline can discharge gas at a high speed when flushing, thereby reducing the flow resistance, avoiding the phenomenon of pipe bursting, and ensuring the normal operation of the pipeline, small exhaust ports are often used, and floating balls are used for sealing. Lever torque type, external micro exhaust valve or air guide tube. Its disadvantages are: when the area of ​​the small exhaust port is greater than 0.5 square centimeters or the pressure difference between the inside and outside of the valve is greater than 0.6Mpa, it cannot be opened to exhaust. The diameter of the trace exhaust hole is too small, resulting in a small high-speed exhaust volume, which cannot discharge the gas in the pipeline in t...

AI Technical Summary

Problems solved by technology

Its disadvantages are: when the area of ​​the small exhaust port is greater than 0.5 square centimeters or the pressure difference between the inside and outside of the valve is greater than 0.6Mpa, the exhaust cannot be opened.

The diameter of the trace exhaust hole is too small, resulting in a small high-speed exhaust volume, which cannot discharge the gas in the pipeline in time, so that the pressure of the water supply source increases and the water flow rate is slow; Valve phenomenon, loss of high-speed exhaust function; external accessories and air ducts are easily damaged

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