Multifunctional soft sealing plug valve for flow division based on chemical oilfield exploitation

Abstract

The invention relates to the technical field of plug valves, and discloses a multifunctional soft sealing plug valve for flow division based on chemical oilfield exploitation. The multifunctional soft sealing plug valve comprises a valve body, wherein a valve cover is arranged at the upper end of the valve body; a plug cock is arranged in the valve body; a valve rod is arranged in the valve body; a handle is arranged at the upper end port of the valve rod; a check block is arranged on the surface of the valve rod and located below the port of the handle; a protective cover is arranged between the check block and the valve cover; a dustproof pad is arranged at the joint of the upper end surface of the valve cover and the valve rod; and a threaded block is arranged on the front end surface of the valve cover. The soft sealing plug valve for flow division based on chemical oilfield exploitation has a good dustproof effect, prevents impurities such as dust from entering a gap between the valve rod and the valve cover to influence rotation of the valve rod, has a valve rod locking effect, prevents the handle connected with the valve rod from being accidentally touched to open the plug valve to cause hidden dangers, also has good connection sealing performance, and improves the connecting effect with a connecting pipe.

Description

technical field [0001] The invention relates to the technical field of cock valves, in particular to a multifunctional soft-seal cock valve for flow diversion based on chemical oil field exploitation. Background technique [0002] The plug valve is a closing member or a plunger-shaped rotary valve. By rotating 90 degrees, the channel port on the valve plug communicates with or separates from the channel port on the valve body to realize opening or closing. The shape of its valve plug It can be cylindrical or conical. In the cylindrical valve plug, the channel is generally rectangular; in the conical valve plug, the channel is trapezoidal. These shapes make the structure of the plug valve light and suitable for cutting and connecting. It is suitable for passing medium and splitting, but it can also be used for throttling sometimes according to the applicable properties and the erosion resistance of the sealing surface. [0003] The existing soft-sealed plug valves used for d...

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Problems solved by technology

[0003] The existing soft-sealed plug valves used for diversion based on chemical oil field mining have certain disadvantages in use. First, the connection between the stem of the plug valve and the upper end of the valve cover does not have a dust-proof and other protective structure, and dust and other sundries enter The gap between the valve cover and the valve stem affects the rotation of the valve stem. Secondly, it does not have the function of locking the valve stem. When the plug valve is closed, accidentally touching the handle connected to the valve stem will easily cause the plug valve to open, which is a hidden danger. , and finally, the connection between the plug valve and the connecting pipe is usually connected by the cooperation of bolts and gaskets, which has the problem of poor connection and sealing effect. Therefore, we propose a multifunctional chemical oil field mining based Diverting soft-sealed plug valve

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