Cock valve

Abstract

The invention provides a cock valve. The cock valve comprises a base, a rod, a guiding sleeve, a driving sleeve, a first pin shaft and a driving mechanism; the guiding sleeve is provided with a guiding groove, and the projection of the guiding groove on the longitudinal middle plane of the guiding sleeve is in a U shape or a flat-bottom U shape; the driving sleeve is provided with a driving groove matched with the guiding groove, and the projection of the driving groove on the longitudinal middle plane of the driving sleeve is in a V shape; at least one end of the first pin shaft is arranged in the guiding groove and the driving groove simultaneously in a penetrating mode; the driving mechanism is used for driving the driving sleeve to rotate relative to the guiding sleeve; the opening direction of the guiding groove is the same as that of the driving groove, the V-shaped inner pointed bottom of the driving groove is higher than the U-shaped or flat-bottom U-shaped inner bottom of the guiding groove, and the distance between the V-shaped inner pointed bottom of the driving groove and the outer bottoms of the two U-shaped or flat-bottom U-shaped side edges of the guiding groove is not smaller than the diameter of the first pin shaft. According to the cock valve, the problem that in the prior art, the condition that the working reliability of the cock valve is reduced due to the fact that a valve element does not rotate and directly goes up or down after being lifted is liable to occur can be solved.

Description

technical field [0001] The invention relates to the technical field of switching valves, in particular to a plug valve. Background technique [0002] In the prior art, the plug valve uses a driving device to lift the valve core and compress the valve core, so as to realize switching and reset sealing of the switching valve. The driving device includes a motor and a driving mechanism. The reversing process of the switching valve mainly depends on the transmission and conversion of the rotation of the motor through the transmission structure. [0003] In the prior art, there is a plug valve, which includes: a seat body; a rod body, which is slidably arranged in the seat body; a guide sleeve, which is fixedly arranged at the first end of the seat body, and is sleeved outside the rod body. Groove, the projection of the guide groove on the longitudinal mid-plane of the guide sleeve is U-shaped or flat-bottomed U-shaped; the drive sleeve is axially limited relative to the guide s...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a plug valve to solve the problem in the prior art that the valve core is easy to rise or fall without rotating after being lifted, which reduces the reliability of the plug valve when it is working.

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