Floating ball type vent valve

Abstract

The invention relates to a floating ball type vent valve, which solves technical problems by adopting the technical scheme: effectively intercepting water in a cavity by using two semicircular metal sheets (made of materials the same as those of a shell); and vertically floating a stainless steel floating ball by means of buoyancy of the water, and sealing the cavity by the aid of the stainless steel floating ball and a spherical rubber surface on the upper portion of the cavity. The shell includes an upper portion and a lower portion which are connected with each other through a screw thread, and the inner surface of the shell is smooth after the two portions are connected. When water is started to be filled into a system, gas-water mixture in the system enters the vent valve, gas is separated from the water under the action of gravity, the gas moves upwards and enters the atmosphere through a vent hole, and the water downwardly enters a pipeline system through a joint. After the system reaches a certain pressure, the gas-water mixture at a certain pressure is filled in the cavity, the water is filled in the inner lower half portion of the cavity, the stainless steel floating ball (with average density is 1 / 4 lower than water density) can float above a water surface under the action of buoyancy, the floating ball slowly rises along with increase of water quantity ad finally contacts with the spherical rubber surface at the upper edge of the cavity, and the floating ball and the spherical surface are combined more tightly when water pressure is higher, so that vent and water plugging functions are achieved. The floating ball type vent valve has the advantages of rapidness in vent, difficulty in blocking the vent hole and durability in use.

Description

Technical field [0001] The invention is an air deflation device used in a small water pipeline closed system, which has simple structure and remarkable effect. The use effect of the air release valve directly affects the operation of the closed circuit system, and affects the use effect and service life of the water pump. Background technique [0002] At present, the air release valve commonly used in plumbing and air-conditioning projects is a needle type air release valve, which has the disadvantages of slow air release and small air release volume; because the air release hole is small, it is easy to block. It takes a lot of time to refill the system every time, and it is necessary to manually go up to the highest point of the system to exhaust the system. Contents of the invention [0003] In order to solve the problem of small amount of air release and easy blockage, the air release hole of the air release valve is enlarged. The invention not only can quickly and ef...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of small air release and easy blockage, the air release hole of the air release valve is enlarged

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