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A Ball Type Ultra-Low Torque Plug Valve

A cock valve and ball type technology, which is applied to cocks including cut-off devices, valve devices, mechanical equipment, etc., can solve the problems of high cost of cock valves, and achieve the effect of reducing the opening and closing torque

Active Publication Date: 2018-11-06
HANGZHOU ANQILA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant standards (API599), plug valves above 4 inches (including) need to be equipped with reducers, resulting in high cost of plug valves, which is also a reason for restricting the use of plug valves

Method used

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  • A Ball Type Ultra-Low Torque Plug Valve
  • A Ball Type Ultra-Low Torque Plug Valve
  • A Ball Type Ultra-Low Torque Plug Valve

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0014] see Figure 1 ~ Figure 3 , This embodiment includes valve body 1, cock 2, bushing 3, compression nut 4, ball cage 5, gland 6, valve cover 7 and ball 8.

[0015] A flow channel hole is opened in the valve body 1, and a cock 2 is installed in the valve body 1 for opening and closing the flow channel hole.

[0016] The bushing 3 is fixed on the hole wall of the flow channel hole. There is a bushing hole in the bushing 3, and the cock 2 is pressed into the bushing hole, and the elastic deformation of the bushing 3 ensures that the valve can be sealed when the cock 2 is closed.

[0017] The bonnet 7 is fixed on the valve body 1 , and the cock 2 is rotatably mounted on the bonnet 7 . A slope 9 is provided on the...

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PUM

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Abstract

The invention provides a ball type ultralow-torque cock valve capable of greatly reducing the opening torque and closing torque of the cock valve. A valve body is provided with a flow channel hole; a cock is mounted in the valve body and is used for opening and closing the flow channel hole; a bush is fixedly arranged on the wall of the flow channel hole and is provided with a bush hole; the cock is pressed into the bush hole; a valve cover is fixedly arranged on the valve body; the cock is rotationally mounted on the valve cover; a slope is formed on the valve cover and is gradually heightened along the opening direction of the cock; a ball retaining frame fixedly sleeves the cock; a gland fixedly sleeves the cock and is used for fixing the ball retaining frame to the cock; a ball is movably mounted on the ball retaining frame; the ball retaining frame is capable of restraining the ball in both the rotating axis direction and the rotating direction of the cock, so that the ball is limited in the rotating axis direction and the rotating direction of the cock so as to move with the ball retaining frame; the bottom of the ball is placed on the slope; a pressing nut and the cock are connected with each other through screw threads; the lower end face of the pressing nut is capable of pressing the ball retaining frame.

Description

technical field [0001] The invention relates to a ball type ultra-low torque plug valve. Background technique [0002] A 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. For example, the application number is 201310123433.1 China Patent. The structure of the current cock valve drives the rotation of the cock with the rotation of the handle. The sealing of the plug valve is mainly realized by the deformation of the plug extruding the bushing. Since the roundness of the plug cannot completely match the roundness of the bushing, the valve must be compressed by the plug to achieve sealing. Deformation to achieve sealing. The contact area of ​​the sealing pair of the plug valve is often approximately oval, and the contact area is much larger than that of the ball valve, so the torque of the plug valve i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/04F16K5/08
CPCF16K5/0442F16K5/08
Inventor 程兴炎
Owner HANGZHOU ANQILA TECH