High-pressure piston type flow rate regulating check multifunctional valve

Abstract

The invention provides a high-pressure piston type flow rate regulating check multifunctional valve, which consists of a valve body, a valve seat, a valve flap, a spring, a check valve, a regulating valve, a piston ring and a bypass piston pipe, wherein a round bypass pipe and a piston cylinder integrally form the round bypass piston pipe, the round bypass piston pipe is divided into a lower part and an upper part, the inner diameter of the lower part of the bypass piston pipe is a little greater than the inner diameter of the upper part of the bypass piston pipe, the upper and lower part junction line in the bypass piston pipe forms a convex shoulder structure, the valve flap is arranged in the lower part of the bypass piston pipe, the height of the valve flap is identical to the height of the lower part of the bypass piston pipe, the diameter of the lower part of the valve flap is a little greater than the diameter of the upper part of the valve flap, the diameter of the lower part of the valve flap is matched with the length of the inner diameter of the lower part of the bypass piston pipe, the diameter of the upper part of the valve flap is matched with the length of the inner diameter of the upper part of the bypass piston pipe, two cylindrical cavities are arranged in the valve flap, one cylindrical cavity is a check cavity, the other cylindrical cavity is a regulating cavity, a check valve is arranged in the check cavity, and a regulating valve is arranged in the regulating cavity. The high-pressure piston type flow rate regulating check multifunctional valve has the advantages that the structure is simple, and the multipurpose of one valve is realized through closing the valve flap.

Description

technical field [0001] The present invention relates to a high-pressure valve, in particular to a high-pressure piston-type flow-regulating check multi-function valve. When the medium flows through, the disc will automatically open and close depending on the flow of the medium itself to realize one of the three valves of cut-off, flow regulation and check. Features. Background technique [0002] The check valve is an automatic valve whose main function is to prevent the reverse flow of the medium, prevent the reversal of the pump and the drive motor, and discharge the container medium. It refers to the automatic opening and closing of the valve disc depending on the flow of the medium itself. However, the existing check valve is not stable in operation, and the rapid movement of the piston causes the whole system to vibrate and make a lot of noise. The flow cannot be adjusted, and the product is easily damaged. Moreover, a piston cylinder is added in the bypass pipe, resulti...

AI Technical Summary

Problems solved by technology

The disc of this kind of valve is not automatically opened and closed by the flow of medium, but by the movement of the valve stem, which is generated by external force. The structure is relatively complicated and the operation is troublesome and noisy.

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