High-class double-disc wafer type check valve without outside leakage

Abstract

The invention provides a high-class double-disc wafer type check valve without outside leakage. The high-class double-disc wafer type check valve comprises a valve body, discs, a fixed shaft and a rotating shaft, wherein two grooves are formed in opposite positions of the inner circumferential surface of the valve body and provided with openings in the upper end surface of the valve body, a fixing block and a stopping block are arranged in each groove, the stopping block is located above the fixing block, the fixing blocks in the two grooves are mounted at two ends of the rotating shaft, the two ends of the fixed shaft are supported on the stopping blocks in the two grooves respectively, and check nuts are arranged at two ends of the fixed shaft, are in threaded connection with the fixed shaft and tightly press the stopping blocks on the valve body. The check valve structure is fixed by the check nuts, and the processed grooves are shallower, so that the processing difficulty of the valve body can be effectively reduced. With the adoption of the structure, the fixing blocks and the stopping blocks can be put into the valve body quite conveniently, and the assembly is very convenient; the stopping blocks are tightly pressed on the valve body through the check nuts, and higher pressure can be borne, and accordingly, the check valve with the structure is more suitable for a high-class pipeline.

Description

technical field [0001] The invention relates to a check valve, in particular to a high-weight non-leakage double-disc wafer check valve. Background technique [0002] The double disc check valve belongs to the swing check valve. Due to its advantages of compact structure, short structure length and small occupied space, it has been widely used in some gas-liquid pipeline systems. The double disc check valve is mainly composed of valve body, valve disc, rotating shaft, fixed shaft, torsion spring and other parts. There are two symmetrically arranged semicircular sealing surfaces on the lower side of the inner cavity of the valve body. The beams are separated, and there are two semicircular discs on the sealing surface of the semicircular valve body. There is a fixed shaft parallel to the rotating shaft. The rotating shaft and the fixed shaft are fixed on the valve body in a certain way. Two torsion springs are set on the rotating shaft. One torsion arm of the torsion spring ...

AI Technical Summary

Problems solved by technology

[0004] Although this check valve structure can achieve no leakage, it is very inconvenient to process. It is necessary to process a square groove inside the valve body, and it is also very inconvenient to assemble and disassemble, and it is not suitable for high-grade pipelines. use

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