Pilot-operated type hydraulic control one-way valve

Abstract

The invention discloses a pilot-operated type hydraulic control one-way valve, which comprises a valve body; one side face of the valve body is provided with a first oil channel and a second oil channel; the left side of the second oil channel is provided with a switch valve hole which is perpendicular to and communicated with the second oil channel; the interior of the switch valve hole is in threaded connection with a switch valve; a one-way valve assembly hole perpendicular to and communicated with the first oil channel is arranged at the left side of the first oil channel; a one-way valve assembly is installed in the one-way valve assembly hole in a threaded mode; an oil return opening is arranged at the lower end of the one-way valve assembly hole; the one-way valve assembly comprises a valve seat, an outer valve element and an inner valve element; the inner valve element is connected into the outer valve element in a sliding mode; and the valve seat is connected into a hole of the one-way valve assembly in a threaded mode to fix an outer valve element. When the one-way valve is used, the opening size of the pilot oil way can be controlled by rotating a hand wheel, and adjustment of the pilot oil way of the one-way valve is achieved. The one-way valve in the structure is simple in oil path arrangement, stable in movement and stable in opening and closing speed.

Description

technical field [0001] The invention relates to the technical field of hydraulic valves, in particular to a pilot-operated hydraulic control check valve. Background technique [0002] The hydraulic valve is an automatic component operated by pressure oil. It is controlled by the pressure oil of the pressure distribution valve. It is usually used in combination with the electromagnetic pressure distribution valve. It can be used to remotely control the on-off of the oil, gas and water pipeline system of the hydropower station. [0003] The pilot-operated check valve is a pilot-operated hydraulically controlled check valve, which is composed of a pilot valve and a hydraulically controlled check valve with detachable connections, or the two structures are integrated on one valve body as a whole. [0004] The pilot structures of the existing pilot-operated hydraulic control check valves are all fixed structures, which cannot be adjusted and closed, and can be used on some hydrau...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problem that the pilot structure of the existing pilot-operated hydraulic control check valve is a fixed structure, which cannot be adjusted and closed, and can be used on some hydraulic valve products that need to adjust the pilot oil circuit, the present invention provides The following technical solutions:

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