Flexible sealing lift valve

A technology for flexible sealing and poppet valves, which is applied in the direction of lift valves, valve details, valve devices, etc., can solve problems such as internal leakage of the valve disc sealing surface, poor soot blowing effect, etc., to achieve improved sealing performance, improved sealing performance and Effect of service life and increased connection strength

Inactive Publication Date: 2016-08-17
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing poppet valve products all adopt the traditional sealing structure, and the sealing surface of the valve disc is prone to internal leakage due to debris stuck in the steam pipeline, the sealing surface of the valve disc itself is deflected, etc., and the soot blowing effect is not good

Method used

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  • Flexible sealing lift valve
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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical solution of the present invention is described:

[0034] The present invention includes a valve disc 2, a valve stem 5 that drives the valve disc 2 to move, and a valve seat 6 that can seal and cooperate with the valve disc 2. The valve disc 2 is a bowl-shaped structure, and the edge of the bowl mouth of the valve disc 2 It constitutes a sealing surface matched with the valve seat 6, and the axial section of the bowl wall of the valve disc 2 is wave-shaped. The valve clack 2 of the present invention has a flexible feature when it is sealed and fitted with the valve seat 6, that is, when the valve clack 2 is sealed and fitted with the valve seat 6, the bowl wall of the valve clack 2 can be elastically deformed to a certain extent, so that the valve In the closed state, the sealing surface of the valve disc 2 can be slightly adjusted, so that it can closely fit with the sealing surface of the valve seat 6 to form a...

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Abstract

The invention belongs to the field of lift valves, and particularly relates to a flexible sealing lift valve. The flexible sealing lift valve comprises a valve clack, a valve rod driving the valve clack to act, and a valve seat capable of being matched with the valve clack in a sealing mode. The valve clack is of a bowl-shaped structure, the bowl mouth edge of the valve clack forms a sealing surface matched with the valve seat, and the axial section of the bowl wall of the valve clack is in a wave shape. The flexible sealing lift valve has the advantage of flexibility when the valve clack is matched with the valve seat in the sealing mode, in other words, the bowl wall of the valve clack can generate certain elastic deformation when the valve clack is matched with the valve seat in the sealing mode, then the sealing surface of the valve clack can be finely adjusted when the valve is in a switched-off state and can be tightly attached to a sealing surface of the valve seat to form a linear sealing state, and therefore the sealing performance of the valve is greatly improved; meanwhile, the sealing surface of the valve clack is not likely to be blocked by debris.

Description

technical field [0001] The invention belongs to the field of poppet valves, in particular to a flexible sealing poppet valve. Background technique [0002] The poppet valve is mainly used at the end of the steam soot blower for cleaning the soot inside the convection tube and industrial boiler tube. It usually uses superheated steam or compressed gas as the soot blowing medium. There is a pressure regulating device inside the valve. The opening and closing of the valve are automatically controlled by the action of the actuator, and the actuator is connected to the valve activation arm through the pin shaft to automatically open and close the valve. The position of the actuator can be adjusted freely to ensure that the valve is opened to supply the soot blowing medium only when the soot blowing gun is in the soot blowing position. When the soot blower retreats to the non-soot blowing position, the valve will automatically close. [0003] The existing poppet valve products a...

Claims

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Application Information

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IPC IPC(8): F16K1/36F16K1/42F16K27/02F16K1/32
CPCF16K1/36F16K1/32F16K1/42F16K27/02
Inventor 冯玉林张继伟范宜霖张建斌吴磊靳卫华李伟
Owner HEFEI GENERAL MACHINERY RES INST
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