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Stop valve assembly

A globe valve and component technology, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of reduced valve disc and valve seat sealing performance, easy to leak, etc., to achieve good sealing effect, prevent transmission leakage, safety Good results

Inactive Publication Date: 2017-06-23
TIANJIN QICHANG VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the disc of the globe valve is in use, the sealing performance between the disc and the valve seat is reduced, and problems such as leakage are prone to occur.

Method used

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  • Stop valve assembly

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Embodiment Construction

[0014] Such as figure 1 As shown, a shut-off valve assembly includes a cylindrical valve body, each of which has a step 11, 12 at both ends of the valve body 1, forming a cylinder with a large diameter in the middle and a small diameter at both ends. A disc 2 is coaxially arranged on the small-diameter cylinder, and the circle diameter of the valve disc 2 is smaller than the diameter of the small-diameter cylinder; Platform 3, when in use, the valve body 1 can be driven by the valve disc 2 sleeved on the step at one end of the valve body 1 and the valve disc 2 sleeved on the large-diameter cylinder and abutting on the boss 3 and the valve body 1 Cooperate.

[0015] Further, the cylinder with large diameter and small diameter at both ends maintains concentric axes.

[0016] The positive effects of the present invention are: effectively preventing problems such as transmission leakage between the discs, realizing good sealing effect, good safety and long service life.

[0017...

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PUM

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Abstract

The invention provides a shut-off valve assembly, which includes a cylindrical valve body. Each of the two ends of the valve body has a step, forming a cylinder with a large diameter in the middle and a small diameter at both ends. The small diameter cylinder of the step at one end is coaxial A disc is provided, and the diameter of the disc is smaller than the diameter of the small-diameter cylinder; on the surface of the large-diameter cylinder, a boss is provided along the circumference near the step with the disc. When in use, the valve body can be respectively sleeved on the The valve clack on the step at one end of the valve body and the valve clack sleeved on the large-diameter cylinder and leaning against the boss are in transmission cooperation with the valve body. The positive effects of the invention are: effectively preventing problems such as transmission leakage between the discs, achieving good sealing effect, good safety and long service life.

Description

[0001] Technical field: [0002] The invention relates to a valve, especially a cut-off valve assembly. [0003] Background technique: [0004] The opening and closing part of the globe valve is a plug-shaped disc, the sealing surface is flat or conical, and the disc moves linearly along the center line of the valve seat. The movement form of the valve stem also has a lifting and rotating rod type. The globe valve refers to a valve whose disc moves along the centerline of the valve seat. At present, when the valve disc of the globe valve is in use, the sealing performance between the valve disc and the valve seat is reduced, and problems such as leakage are prone to occur. Since the opening or closing stroke of the valve stem of this type of valve is relatively short, and the disc of the double cylinder has a reliable cutting function and the sealing performance is greatly improved, the change of the port of the valve body is proportional to the stroke of the disc, which is ve...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K1/32F16K1/36
CPCF16K1/22F16K1/32F16K1/36
Inventor 赵树起张小娟衣德玉暴洪雷
Owner TIANJIN QICHANG VALVE MFG