Self-limiting valve opening and closing device

Abstract

The invention discloses a self-limiting valve opening and closing device, and solves the problem of a traditional mechanical transmission mechanism incapable of extending front and back and adjustingleft and right in the center line direction of a valve mandrel of a valve hand wheel in multi-valve use places. The self-limiting valve opening and closing device comprises a valve opening and closingtransmission mechanism, a limiting compensator and a spanner, wherein the valve opening and closing transmission mechanism consists of an extension driving mechanism, a rotary driving mechanism, anda cylinder supported between the extension driving mechanism and the rotary driving mechanism; under driving by an extension motor and a rotary motor, when a hollow spline shaft penetrating through atransmission shaft of a rotary RV speed reducer axially slides in the cylinder, the hollow spline shaft is synchronously rotated around a center line parallel to a rotary shaft; and the spanner with aclamping jaw structure is driven through the limiting compensator, and is rotated during axially sliding to finish opening, closing and adjustment of a valve. The self-limiting valve opening and closing device is simple in structure, reasonable in design, convenient to operate and stable in operation, can effectively replace manual adjustment of the valve, is precise, fast and safe in operation,and prominently improves the operation efficiency.

Description

technical field [0001] The invention relates to a tool for controlling the opening and closing and adjusting operation of a valve by a mechanical transmission mechanism, especially a self-limiting valve opening and closing device for a place where a relatively dense valve tree is used, and can also be used for other valves that need to control multiple valves. A place for opening, closing and adjusting operations; it belongs to the field of valve operation technology. Background technique [0002] At present, for the environment where a large number of valves are installed, the pipeline of the valve is usually arranged vertically, that is, the valve is installed on the upper end of the pipeline. Usually the axis of the valve core with the handwheel is parallel to the ground, and the plane where the handwheel facing the operator is perpendicular to the ground. When a large number of valves exist, for the convenience of operation, the planes where the handwheels of the valves...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a self-limiting valve opening and closing device, which solves the problem that the existing mechanical transmission mechanism cannot be adjusted forward and backward along the center line of the valve mandrel shaft of the valve hand wheel and adjusted left and right for multi-valve use places. It has simple structure, reasonable design, convenient operation and stable operation, which can effectively replace the manual adjustment of valves. The operation is accurate, fast and safe, and the operation efficiency is significantly improved.

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