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Butterfly valve

A butterfly valve and valve plate technology, which is applied in the direction of lifting valves, valve devices, engine components, etc., and can solve the problems such as the greater influence of the water flow state

Active Publication Date: 2020-10-13
浙江超飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the object of the present invention is to provide a butterfly valve to solve the problem that the existing butterfly valve has a great influence on the state of the water flow when the throttling range is large.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] combine Figure 1 to Figure 4 As shown, the butterfly valve of the present invention is schematically shown, and the butterfly valve includes a valve body 100 and a valve core disposed inside the valve body 100;

[0029] Wherein, the valve core includes a shaft body 200 and a first valve plate 300 and a second valve plate 400 arranged in parallel. In this embodiment, the first valve plate 300 and the second valve plate 400 are both circular and concentric It is provided that the radius of the first valve plate 300 is greater than the radius of the second valve plate 400 . The shaft body 200 is rotatably connected to the valve body 100, the first valve plate 300 is located on the drain side of the valve core, the second valve plate 400 is located on the water inlet side of the valve core, and the axis of the shaft body 200 is vertical and passes through the first valve plate 300 The connecting line between the center of the circle and the center of the second valve plat...

Embodiment 2

[0042] This embodiment is basically the same as the above-mentioned first embodiment, the difference between the two is that the valve core includes a shaft body 200 and a first valve plate 300 and a second valve plate 400 arranged in parallel. In this embodiment, the first valve plate 300 and the second valve plate 400 are semicircular, and they are concentrically arranged, and the radius of the first valve plate 300 is larger than the radius of the second valve plate 400 . The shaft body 200 is rotatably connected to the valve body 100, the first valve plate 300 is located on the drain side of the valve core, the second valve plate 400 is located on the water inlet side of the valve core, and the axis of the shaft body 200 is vertical and passes through the first valve plate 300 The connecting line between the center of the circle and the center of the circle of the second valve plate 400, the shaft body 200 is arranged on the diameter side of the first valve plate 300, and t...

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Abstract

The invention relates to the field of water valves, in particular to a butterfly valve. The butterfly valve comprises a valve body and a valve element arranged in the valve body. The valve element comprises a shaft body, a first valve plate and a second valve plate, wherein the first valve plate and the second valve plate are arranged in parallel. The shaft body is rotationally connected to the valve body. The first valve plate is located on the drainage side of the valve element. The second valve element is located on the water inlet side of the valve element. The first valve plate and the second valve plate are in sliding connection so that the first valve plate and the second valve plate can move oppositely or back to back. Multiple first through holes are formed in the first valve plate, multiple blocking portions and multiple second through holes are formed in the second valve plate, the blocking portions are used for blocking or avoiding the first through holes, and each second through hole is located between the two corresponding adjacent blocking portions. The shaft body is located between the first valve plate and the second valve plate and is rotationally connected to thefirst valve plate, a cam and a first limiting block are arranged on the shaft body, the outer circumferential face of the cam is connected to the first valve plate and the second valve plate in an abutting manner, and a second limiting block with the position corresponding to that of the first limiting block is arranged on the first valve plate.

Description

technical field [0001] The invention relates to the field of water valves, in particular to a butterfly valve. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure. Butterfly valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. When the butterfly valve is in a state with a large throttling range (that is, the opening angle of the valve plate is small), the valve plate itself acts as a water retaining part in the pipeline, which has a great influence on the water flow state in the pipeline. The shape of the opening formed on the water inlet side is centered on the valve shaft, and the two sides are formed in different states. One side of the valve body and the valve plate form a nozzle-shaped opening, and the other side is similar to a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/226F16K1/36
CPCF16K1/22F16K1/223F16K1/2261
Inventor 项飞沈超
Owner 浙江超飞科技有限公司