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Wear-resistant and anti-scouring gate valve

An anti-scour and wear-resistant technology, applied in sliding valves, valve details, valve devices, etc., can solve the problems of large erosion, poor sealing performance, easy wear, etc., to reduce flow rate, reduce wear and erosion damage, and achieve reliable sealing Effect

Inactive Publication Date: 2020-04-17
KCM VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the background technology, the present invention provides a wear-resistant and anti-scouring gate valve, which solves the problem that the outlet valve seat of the existing gate valve is easily eroded and easily worn, resulting in poor sealing performance.

Method used

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  • Wear-resistant and anti-scouring gate valve

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Embodiment Construction

[0021] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0022] Such as Figure 1-2 As shown, a wear-resistant and anti-scouring gate valve includes a valve body 1, a gate plate 2, a valve stem 3 and a driving device. The valve body 1 includes an inlet channel 11, an outlet channel 12 and a middle chamber 13. The inlet channel The outlet end of 11 is provided with inlet valve seat 14, and the inlet end of described outlet channel 12 is provided with outlet valve seat 15; The inlet sealing surface 21 of sealing fit, and the outlet sealing surface 22 capable of sealingly fitting with the outlet valve seat 15 is formed on the other end surface; Moving up and down.

[0023] The driving device can be an automatically driven valve actuator, or a handwheel structure can be used to realize manual operation. The valve stem 3 is rotated by the driving device, and the valve stem 3 moves up and down through the cooperation ...

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Abstract

The invention discloses a wear-resistant and anti-scouring gate valve and aims at mainly solving the problems that an existing gate valve outlet valve seat is easily scoured and easy to wear to causepoor sealing performance. The wear-resistant and anti-scouring gate valve is characterized in that a notch groove is formed in the bottom of a gate plate; and the tops of the two ends of the notch groove are lower than the bottom of the inlet sealing surface and the bottom of the outlet sealing surface respectively. The wear-resistant and anti-scouring gate valve has the advantages that at the initial stage of opening the valve and lifting the gate plate, a flow channel is collectively formed among the notch groove at the bottom, the inlet valve seat and the outlet valve seat for medium circulation, so that the flow rate of a medium is lowered, damages on the outlet valve seat caused by wear and scouring with the medium are reduced, and reliable sealing between the outlet valve seat and the outlet sealing surface of the gate plate is guaranteed.

Description

technical field [0001] The invention relates to a gate valve, in particular to a wear-resistant and scour-resistant gate valve. Background technique [0002] The opening and closing part of the gate valve is a gate, which is sealed by the contact between the valve seat and the gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. [0003] At present, when the gate valve is opened, the medium rushes from the inlet channel to the outlet channel, which will cause a large erosion of the outlet valve seat at the outlet channel, which will easily lead to wear of the outlet valve seat in the long run, resulting in an unreliable seal between the outlet valve seat and the gate , a leakage problem occurs. [0004] How to reduce the erosion of the medium on the outlet valve seat is an urgent problem to be solved by those skilled in the art. Contents of...

Claims

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Application Information

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IPC IPC(8): F16K3/02F16K3/30F16K27/04F16K31/60
CPCF16K3/0227F16K3/0281F16K3/30F16K27/044F16K31/60
Inventor 张延斌王章章林函才程红晖章成选王靖华吴业飞戴温炜钱长兴项炳弟孙冬萍孙永玲夏传虎
Owner KCM VALVE
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