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Butterfly valve having screening function

A technology of butterfly valve and function, applied in the field of butterfly valve with screening function

Inactive Publication Date: 2015-11-18
天津市精沃阀门科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a butterfly valve with screening function to solve the problems existing in existing butterfly valves

Method used

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  • Butterfly valve having screening function
  • Butterfly valve having screening function
  • Butterfly valve having screening function

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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] The butterfly valve with screening function according to the present invention, such as Figures 1 to 3 As shown, it includes a cylindrical valve body 1 with a hollow cavity, at least two butterfly plates 3 and valve stems 4 equal in number to the butterfly plates 3;

[0024] The butterfly plate 3 is matched in the hollow cavity along the axial direction of the valve body 1, and the sealing ring 2 is embedded on the cavity wall of the valve body 1. When the end surface of the butterfly plate 3 is perpendicular to the axis of the valve body 1, the valve body 1 passes through the sealing ring 2 and Butterfly plate 3 is sealed and matched to increase the degree of sealing;

[0025]...

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Abstract

The invention provides a butterfly valve having a screening function. The butterfly valve comprises a cylindrical valve body having a through hollow cavity, at least two butterfly plates and valve rods as many as the butterfly plates, wherein the butterfly plates are matched and arranged in the hollow cavity in the axial direction of the valve body; the butterfly plates and the valve rods are fixedly connected; a shaft sleeve and a positioning sleeve are coaxially arranged in the radial direction of the valve body and matched with the butterfly plates; the valve rods are coated with the shaft sleeve and the positioning sleeve; no medium through hole is formed in the first butterfly plate in the hollow cavity of the valve body along the direction from the inlet of the valve body to the outlet of the valve body; multiple medium through holes are respectively formed in each butterfly plate behind the first butterfly plate; the apertures of the medium through holes formed in the same butterfly plates are the same; and the apertures of the medium through holes formed in different butterfly plates behind the first butterfly plate are different from each other. The butterfly valve having the screening function can realize the adjustment of various small flows, and can filter away impurities, with apertures greater than the apertures of the medium through holes in the butterfly plates in a closing state, in mediums so as to realize primary medium filtration.

Description

technical field [0001] The invention relates to a butterfly valve, in particular to a butterfly valve with screening function. Background technique [0002] The butterfly valve is a control and regulating valve widely used in various industries. It realizes the opening, closing and flow adjustment of the pipeline through the disc-shaped butterfly plate that rotates with the valve stem. Butterfly valves have certain limitations in the adjustment of the flow rate, which is specifically reflected in: it is not easy to adjust the various small flow rates required by controlling the rotation angle of the butterfly plate. For this, it is often necessary to improve the control mechanism of the opening and closing unit to improve the control mechanism. The control accuracy of the butterfly plate rotation angle is used to solve this problem; and the medium flowing through the butterfly valve does not have a basic filtering function, so it is often necessary to add additional filterin...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K1/36F16K1/52
CPCF16K1/223F16K1/36F16K1/52
Inventor 李继元刘凯
Owner 天津市精沃阀门科技有限公司
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