Ball valve with replaceable sealing ring

Abstract

The invention discloses a ball valve with a replaceable sealing ring. The ball valve with the replaceable sealing ring comprises a water inlet pipe, a water outlet pipe, a valve body, a valve element,a valve rod and a sealing assembly, wherein the sealing assembly comprises a cavity, a driving assembly, a switching assembly and a limiting assembly, the cavity comprises a switching bin and a limiting bin, the driving assembly comprises rotating mechanisms and a power mechanism, the switching assembly comprises a sealing seat and an elastic piece, and the limiting assembly comprises a fixing base and a supporting piece. According to the ball valve with the replaceable sealing ring, a sealing base and a fixing base are arranged on the rotating mechanisms in the switching bin and the limitingbin correspondingly, the sealing base carries the sealing ring to be aligned with the water outlet pipe, the supporting piece on the fixing base controls the sealing base to slide, then abutting fitof the sealing ring and the valve element is controlled, the power mechanism drives the rotating mechanisms in the switching bin and the limiting bin to rotate alternately, quick replacement of the sealing ring is achieved, and the technical problem that in the prior art, the sealing ring is replaced by disassembling and assembling the valve body is solved.

Description

technical field [0001] The invention relates to the field of valve equipment, in particular to a ball valve with a replaceable sealing ring. Background technique [0002] Because the sealing ring of the ball valve is damaged after being used for a period of time, the sealing ring needs to be replaced during maintenance. At present, when replacing the sealing ring of the existing ball valve, the ball valve needs to be disassembled and replaced, which is time-consuming and labor-intensive. [0003] The utility model patent with the Chinese patent application number CN201821403075.4 discloses a ball valve with a replaceable sealing structure, including a valve cover, a valve stem, a valve body, a valve disc and a ball. A valve seat is provided, and the inner cavity of the valve has a cavity for accommodating a sphere, the sphere is arranged in the cavity, the valve disc is installed on the sphere, and the contact surface between the valve disc and the valve seat fits together t...

AI Technical Summary

Problems solved by technology

[0004] However, when replacing the sealing element of the ball valve, it is necessary to disassemble the valve cover and take out the valve disc and valve seat. After replacement, it needs to be assembled again. The airtightness of the ball valve needs to be tested again, and the replacement of the sealing element is inefficient.

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