An Adaptive Bidirectional Floating Seat Structure

A floating valve seat, self-adaptive technology, applied in valve devices, engine components, cocks including cut-off devices, etc., can solve problems such as difficult and reliable sealing of the sealing surface, excessive contact stress on the sealing surface, and increased valve opening torque. , to achieve the effect of good sealing effect, excellent performance and reliable sealing specific pressure

Active Publication Date: 2019-02-19
WUHAN DAYU VALVE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fixed valve seat has a simple structure, but it is difficult to establish a reliable sealing specific pressure on the sealing surface at low pressure, and the contact stress on the sealing surface is too large at high pressure, which greatly increases the valve opening torque; Establish effective sealing specific pressure at low pressure, but it is difficult to achieve reliable two-way sealing

Method used

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  • An Adaptive Bidirectional Floating Seat Structure
  • An Adaptive Bidirectional Floating Seat Structure
  • An Adaptive Bidirectional Floating Seat Structure

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figure 1-3 As shown, the self-adaptive two-way floating valve seat structure provided by the present invention includes a valve body 1, and a valve seat 2 and a spherical cap 3 that cooperate with each other are arranged in the valve body 1, and the spherical cap 3 is connected to the ball 15, and also includes a The valve body 1 is close to the pressure plate 4 on the side of the spherical crown. The valve seat 2 is located between the pressure plate 4 and the valve body 1, and there is an axial clearance between the pressure plate 4 and the valve body 1 on both sides. Compressed first spring 5, second spring 6, a plurality of first springs 5, second spring 6 are evenly distributed along the circumferential direction on both sides of the valve seat, the end of the first spring 5 is against the valve body 1, the second T...

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Abstract

The invention discloses a self-adaptive bidirectional floating valve seat structure. The structure comprises a valve body; a valve seat and a spherical crown which are matched with each other are arranged in the valve body; the structure is characterized by further comprising a circular pressing plate connected on one side, close to the spherical crown, of the valve body; the valve seat is located between the pressing plate and the valve body, an axial gap exists between one side of the valve seat and the pressing plate, and an axial gap exists between the other side of the valve seat and the valve body; an axially compressed first spring is arranged between the valve seat and the valve body; an axially compressed second spring is arranged between the valve seat and the pressing plate; the valve seat floats between the valve body and the pressing plate axially; and the first spring and the second spring jointly enable the valve seat and the spherical crown to be fit in a sealed manner at the sealing surface. According to the structure, sealing pressure is applied to a sealing pair under the resultant action of the two springs, the valve seat and the springs can be adjusted in a self-adaptive manner under different working pressure, the reasonable sealing force is applied to the sealing surface, and the self-adaptive bidirectional floating effect is realized.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an adaptive bidirectional floating valve seat structure. Background technique [0002] In the prior art, the valve seat of the eccentric hemispherical valve is divided into a fixed valve seat and a floating valve seat. The fixed valve seat has a simple structure, but it is difficult to establish a reliable sealing specific pressure on the sealing surface at low pressure, and the contact stress on the sealing surface is too large at high pressure, which greatly increases the valve opening torque; An effective sealing specific pressure is established at low pressure, but it is difficult to achieve reliable two-way sealing. Contents of the invention [0003] The purpose of the present invention is to solve the disadvantages of the above-mentioned background technology, and provide an adaptive bidirectional floating valve seat structure capable of effective bidirectional sealing un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/06F16K5/08
Inventor 李习洪马志祥
Owner WUHAN DAYU VALVE
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