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Valve element of butterfly valve

A butterfly valve, valve core technology, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of increased friction and increased rotational torque, achieve roughly uniform rigidity, improve rigidity, and improve sealing stability Effect

Inactive Publication Date: 2012-12-26
巴阀门株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when the rigidity of the spool is low and the spool is easily deformed, the contact area between the outer peripheral portion of the spool and the seat ring needs to be increased to maintain airtightness, so the frictional force increases, The rotation torque becomes larger

Method used

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  • Valve element of butterfly valve
  • Valve element of butterfly valve
  • Valve element of butterfly valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Embodiments of the present invention will be described below using the drawings. figure 1 The reference number (1) in the figure is the main body of the butterfly valve, which has a hollow cylindrical flow path, and is supported by the valve stem (3), (4) to rotate freely. The hollow cylindrical flow path is opened and closed. A seat ring (5) made of elastic body is installed on the inner peripheral surface of the hollow cylindrical part of the valve body (1), so that the outer peripheral surface of the valve core (2) contacts the seat ring (5) and leaves the seat ring (5). , to open and close the valve.

[0029] refer to figure 2 , the valve core (2) is composed of a disc-shaped base plate (6), and has a cylindrical part (7) for inserting the valve stem in the center of the base plate (6). The cylindrical portion ( 7 ) has a shape that bulges from the front and back of the substrate ( 6 ). The shape of the cylindrical portion ( 7 ) can increase the section coeffic...

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PUM

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Abstract

Provided is a valve element of a butterfly valve, wherein the rigidity of the valve element is increased, the operation torque of the butterfly valve is reduced, and the operation of the butterfly valve is facilitated. A cylindrical portion extending diametrically is formed on the center of a disk-shaped base plate constituting a valve element so that the cylindrical portion protrudes on the front and back sides of the base plate. A valve shaft insertion hole is provided in the cylindrical portion, and a plurality of circular ribs intersecting and in contact with the cylindrical portion are coaxially projected on the front and back sides of the base plate. Furthermore, the outermost peripheral rib is disposed along the edge of the base plate, and the outer diameter of the center of the cylindrical portion is larger than the outer diameter of an end of the cylindrical portion.

Description

technical field [0001] The invention relates to a valve core of a butterfly valve used for opening, closing and regulating the pipelines through which fluids such as water supply, gas and oil flow in a piping system. Background technique [0002] In the past, a disc-shaped valve core was pivotally supported in a cylindrical valve box so that the valve core could rotate freely, and a seat ring made of an elastic member installed on the inner peripheral surface of the valve box and the outer peripheral surface of the valve core were pivotally supported. The butterfly valve, which opens and closes the pipeline by indirect contact and separation, has a simple structure, so it is widely used in the flow control of various fluids. Generally, the butterfly valve has the function of rotating the valve core by using a motor, a pressure cylinder and other drivers to drive the valve stem to rotate, so that the outer circumference of the valve core contacts and separates from the seat r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22
CPCF16K1/222F16K1/22
Inventor 翁剑刚
Owner 巴阀门株式会社
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