Lower switching valve device for detecting air tightness of precise three-way valve

Abstract

The invention relates to the field of valve switches. The invention discloses a lower switching valve device for detecting the air tightness of a precise three-way valve. The device comprises an up-down moving mechanism, a clamping mechanism and a valve opening and closing mechanism. The clamping mechanism comprises a mounting box, a rotating shaft, a chuck, a coupler and a clamping cylinder. Therotating shaft is vertically arranged in the mounting box, the rotating shaft is sleeved with an outer shell, the outer shell is conical, and a clamping groove used for the chuck is formed in an upperportion of the outer shell. The chuck is slidably mounted on an upper portion of the rotating shaft and located in the outer shell, and the shape of a top of the chuck corresponds to that of the clamping groove. The coupler is connected to a lower portion of the rotating shaft. The clamping air cylinder is installed on a lower portion of the coupler, the valve opening and closing mechanism is installed on an upper portion of the clamping mechanism, and the valve opening and closing mechanism is used for rotating the clamping mechanism to open or close the valve. The device has the technical effects that the clamping air cylinder pulls the rotating shaft downwards, the chuck moves downwards, the upper portion of the chuck is tightened through the clamping groove to clamp the three-way valve, and subsequent opening and closing of the valve are facilitated.

Description

technical field [0001] The invention relates to the field of valve switches, in particular to a lower switch valve device for air tightness detection of precision three-way valves. Background technique [0002] Existing valve airtightness testing equipment, such as the gas cylinder valve airtightness testing machine disclosed in the Chinese invention patent with the publication number CN107860535A (publication date: 2018.03.30), has a structure including a frame, a tripod mount, a chassis , column, pressure gauge, support rod, clamping part, press, alarm, support panel, fixed block, valve air tightness detection device, monitor, hydraulic controller, display screen, the left end of the frame and the right end of the triangle bracket The upright column is embedded and connected to the support panel, the upper end of the support panel is attached to the lower end of the pressure gauge, the hydraulic tank is opened through the hydraulic controller for stamping, the pressure cha...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the phenomenon that the valve is easy to fall off when the valve is rotated in the above-mentioned existing switch valve device, the first object of the present invention is to provide a precision three-way valve air tightness detection device that clamps the valve by a clamping mechanism and then rotates the valve. Lower switch valve device

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