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Floating ball valve

A technology for floating ball valves and valve seats, which is applied to valve devices, engine components, cocks including cut-off devices, etc. It can solve the problems of complex manufacturing process, complex structure, and increased wear of valve seats, and achieve long service life and reliable structure. , the effect of low torque

Inactive Publication Date: 2014-08-13
贺增华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, in order to fix the ball, the fixed ball valve has a complicated structure, and the manufacturing process is more complicated than that of the floating ball valve.
[0006] Compared with the fixed ball valve, the manufacturing process of the floating ball valve is simple and the cost is low, but since all the pressure is borne by the valve seat, the driving force required to open and close the floating ball valve is very large
On the other hand, since the floating valve seats in the prior art are all flexible valve seats, they are mostly made of polytetrafluoroethylene, see patent CN201020182464.6, when the medium pressure increases, the pressure transmitted from the ball to the valve seat will also increase , leading to increased wear of the valve seat, thus reducing the sealing performance

Method used

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  • Floating ball valve
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Embodiment Construction

[0018] The valve seat and floating ball valve of a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to this embodiment described below, and the technical idea of ​​the present invention can be implemented in combination with other known technologies or other technologies having the same functions as those known technologies.

[0019] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "rear", "left", "right", "outer", "inner" should be used. "", "outward", "inward", "axial", "radial" and other words are understood as convenient terms and should not be understood as restrictive terms.

[0020] figure 1 It is the open state of the floating ball valve in the prior art. Wherein 10 is the valve stem, 11 i...

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PUM

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Abstract

The invention discloses a floating ball valve which comprises a valve body, a ball body, a valve base and a valve rod, wherein the valve body internally comprises a valve body cavity; the ball body and the valve base are arranged in the valve body cavity; the valve rod and the ball body are connected and are arranged on the valve body; the valve base is connected with the valve body by virtue of an elastic element. When the floating ball valve is closed, the ball body and the valve base of the floating ball valve move in the valve body cavity.

Description

Technical field [0001] The invention relates to a valve for fluid control, in particular to a floating ball valve. Background technique [0002] A ball valve is a valve that is driven by a valve stem by an opening and closing member (sphere) and rotates 90 degrees around the axis of the valve stem. It is mainly used for fluid adjustment and control. Since its birth, ball valves have been widely used in petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, steel and other industries, and they are essential parts in the mechanical field. [0003] The main features of the ball valve are its compact and simple structure, reliable sealing, and convenient maintenance. The sealing surface and the spherical surface are often closed under the action of the medium pressure, and are not easily eroded by the medium. It is easy to operate and maintain. It is suitable for water, solvents, acids and Natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/201F16K5/06F16K5/08
Inventor 贺增华
Owner 贺增华