Flange type butterfly valve

A flanged and butterfly valve technology, applied in the field of flanged butterfly valves, can solve the problems of the relative rotation of the valve stem and the butterfly plate, the loose connection between the valve stem and the butterfly plate, shortening the service life of the product, etc., and achieves good bidirectional sealing effect and operation. Reliable, reliability-enhancing effects

Pending Publication Date: 2020-12-18
上海晟凡流体控制有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Butterfly valve seals are usually sealed by the close contact between the butterfly plate and the valve seat in the valve body. Since the valve stems pass through the valve seats and are fixedly connected to the butterfly plate, after a period of use, it is easy to cause the joint between the valve stem and the butterfly plate to become loose. , when the butterfly valve is opened or closed, it is easy to cause the relative rotation between the valve stem and the butterfly plate, which reduces the reliability of the valve operation and shortens the service life of the product

Method used

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] Refer as follows Figure 1-4 The present invention is described:

[0021] A flanged butterfly valve, including a valve body 1, a valve stem 2, and a butterfly plate 3, the valve body 1 includes an upper valve body 101 and a lower valve body 102, the upper valve body 101 and the lower valve body 102 The valve body 1 is provided with a valve seat 4, and the inner surface of the valve seat 4 is provided with a fluorine-lined layer 5, and the butterfly plate 3 ...

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Abstract

The invention provides a flange type butterfly valve. The flange type butterfly valve comprises a valve body, a valve rod and a butterfly plate. The butterfly plate is provided with an installing hole. The valve rod is provided with a fixing rod. The side wall of the installing hole is provided with a fixing hole. The fixing rod is in inserted fit with the fixing hole. A valve seat is arranged inthe valve body. The inner surface of the valve seat is provided with a lining fluorine layer. The outer side of the butterfly plate is provided with a sealing layer. The sealing layer is in abutting fit with the lining fluorine layer to form sealing. The flange type butterfly valve has the beneficial effects of being reliable in operation and good in two-way sealing effect. The butterfly plate andthe valve rod on the flange type butterfly valve are fixedly connected through the fixing rod, and the operation reliability of the butterfly valve is improved. The sealing layer arranged on the outer side of the butterfly plate is in abutting fit with the lining fluorine layer arranged on the inner surface of the valve seat to form sealing, and the sealing effect of the butterfly valve is improved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a flanged butterfly valve. Background technique [0002] Valves 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, and mainly play the role of cutting and throttling on pipelines. Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. kind of valve. [0003] The fluorine-lined butterfly valve is a component used to realize on-off and flow control of the pipeline system. It has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The fluorine-lined butterfly valve usually includes a valve body, a valve seat , butterfly plate, valve stem. [0004] Butterfly valve seals are usually sealed by the close contact between the butterfly...

Claims

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Application Information

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IPC IPC(8): F16K1/226F16K1/42F16K41/02F16K1/48F16K27/02F16F15/08
CPCF16F15/08F16K1/2261F16K1/2268F16K1/42F16K1/48F16K27/0218
Inventor 杨春雨
Owner 上海晟凡流体控制有限公司
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