Anti-air-leakage high sealing performance safety valve

Abstract

The invention discloses an anti-air-leakage high-sealing-performance safety valve. The anti-air-leakage high-sealing-performance safety valve comprises a valve body, a valve element, a limiting platform, a valve rod, a rotating block, a pressure gauge, a signal converter, an alarm device, a threaded cylinder, a first sealing ring, a second sealing ring, a pressing ring and a boosting assembly; the valve element is movably arranged in a first hole in the valve body, the rotating block is connected with the upper end of the valve element, and the lower end of the valve rod is connected with the upper end of the rotating block; a second hole, a third hole and a first hole which sequentially communicate are formed in the valve body from top to bottom, the threaded cylinder is limited in the second hole through the limiting platform, external threads on the rotating block are matched with internal threads on the threaded cylinder, the first sealing ring is arranged in the third hole, the pressing ring abuts against the upper end of the first sealing ring, the inner circumference of the second sealing ring abuts against the outer circumferential face of the valve element, the boosting assembly is arranged between the pressing ring and the threaded cylinder, and the boosting assembly elastically abuts against the outer circumference of the second sealing ring and the upper end of the pressing ring. The anti-air-leakage high-sealing-performance safety valve has high sealing performance.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an anti-leakage safety valve with high sealing performance. Background technique [0002] A valve is a commonly used pipeline accessory in a fluid system, which can close the pipeline, control the flow direction, adjust and control the parameters of the conveying medium, etc., and the sealing performance of the valve is the most important technical performance index of the valve. [0003] The published patent CN205226391U is an anti-leakage safety valve, including a hand wheel, a warning light, a buffer pad, a signal converter, a limit platform, a valve stem, a rotating block, an external thread, an internal thread, an air outlet pipe, a gasket, and a valve core , pressure gauge, air supply pipe, alarm, pressure measuring tube, valve body, valve chamber, the valve chamber is provided with a valve chamber, the inner surface of the valve chamber is provided with internal threads, th...

AI Technical Summary

Problems solved by technology

However, after a period of use, due to wear, the sealing performance of the connection between the valve core and the valve body will decrease, which will cause gas to leak from the gap between the valve core and the valve body

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