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A fast opening and closing low torque self-cleaning flat gate valve

A flat gate valve, low torque technology, applied in the field of fast opening and closing low torque self-cleaning flat gate valve, can solve problems such as the gate lift is laborious, the sealing ring is easily damaged, and the effect of reducing the resistance is achieved.

Active Publication Date: 2020-05-08
ZHEJIANG BIAOSHENG VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, to provide a fast opening and closing low torque self-cleaning slab gate valve, through the special structure setting of the pressure bearing mechanism and the valve seat, the gate plate passes through the pressurized assembly during the lifting process Overcoming the pressure of the flowing medium on the ram, it is close to the removal component, realizes the automatic removal of impurities on the ram surface during the gate opening process, and solves the technical problems in the prior art that the ram is laborious to lift and the sealing ring is easily damaged

Method used

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  • A fast opening and closing low torque self-cleaning flat gate valve
  • A fast opening and closing low torque self-cleaning flat gate valve
  • A fast opening and closing low torque self-cleaning flat gate valve

Examples

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Embodiment 1

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0042] Such as Figures 1 to 7 As shown, a fast opening and closing low-torque self-cleaning flat gate valve includes a valve body 1 and a lifting mechanism 2 installed inside the valve body 1 and used to control the movement of the gate plate 3 up and down. The valve body 1 is provided with a supply medium The medium passage 11 passing transversely and the valve cavity 12 perpendicular to the medium passage 11 also include:

[0043] Valve seat 4, two valve seats 4 are installed in the valve cavity 12, the valve seats 4 are symm...

Embodiment 2

[0051] Such as Figures 8 to 10 As shown, the parts that are the same as or corresponding to those in Embodiment 1 adopt the reference numerals corresponding to Embodiment 1. For the sake of simplicity, only the differences between Embodiment 1 and Embodiment 1 are described below; the differences between Embodiment 2 and Embodiment 1 The difference is that in this embodiment, the lifting mechanism 2 is provided with a ball screw structure, which includes a valve stem 21 and a handwheel 22 , the upper end of the valve stem 21 penetrates to the outside of the valve body 1 and is connected to the handwheel 22 , the valve stem 21 is provided with a spiral raceway, and a nut 23 and a plurality of balls 24 are installed in cooperation;

[0052] Such as Figure 9 and 10 As shown, the gate 3 is a flat plate structure, which is arranged in the valve cavity 12 along the vertical direction, and the upper part of the gate 3 is provided with a diversion hole 31 that is compatible with t...

Embodiment 3

[0058] Such as image 3 and 13 As shown, the parts identical or corresponding to those in the second embodiment adopt the reference numerals corresponding to the second embodiment. For the sake of simplicity, only the differences between the second embodiment and the second embodiment are described below; the difference between the third embodiment and the second embodiment The difference is that the cleaning assembly 43 is fixedly arranged on the inner ring of the valve seat 4 and is located on the side close to the gate plate 3, and the flowing medium in the medium channel 11 is guided to the gate through the cleaning assembly 43. Impurities are cleaned on the surface of the plate 3, and the cleaning component 43 is annular and extends inwardly to provide a transition connection with the internal slope of the valve seat 4. The inner diameter D1 of the cleaning component 43, the inner diameter D2 of the medium channel 11, and the Between the inner diameter D3 and the inner d...

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Abstract

The invention relates to the technical field of valves, in particular to a low-torque self-cleaning flat plate gate valve capable of being quickly opened and closed. The low-torque self-cleaning flatplate gate valve capable of being quickly opened and closed comprises a valve body, a lifting mechanism, a valve seat and a pressure-bearing mechanism, wherein the valve seat comprises a sealing ringarranged on the valve seat, an elastic assembly and a clearing assembly; the pressure-bearing mechanism comprises a traction assembly arranged on the valve body and a supercharge assembly connected with the traction assembly; the supercharge assembly is arranged on a gate; in a process of driving the gate to move downwards by the lifting mechanism, the supercharge assembly supports the gate, so that the gate gets close to the clearing assembly while the supercharge assembly overcomes ballast force, on the gate, of a flowing medium; and special structures of the pressure-bearing mechanism and the valve seat are arranged, so that in a lifting process of the gate, the supercharge assembly gets close to the clearing assembly while overcoming pressure, on the gate, of the flowing medium, and therefore, automatic removal for impurities on the surface of the gate in a gate opening process are realized, and the technical problems that the gate is labor-wasting in lifting, and the sealing ringis liable to damage in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a fast opening and closing low torque self-cleaning flat gate valve. Background technique [0002] Valve is a kind of fluid opening and closing control mechanism, which is divided into cut-off type, check type, safety type, adjustment type, diversion type and special purpose type, widely involved in people's life, production, transportation and other fields, among which cut-off type Including gate valves, globe valves, plug valves, ball valves, butterfly valves, needle valves, diaphragm valves, etc.; and gate valves are mostly used in water conservancy projects and other fields, especially in water conservancy projects with large flows; The sealing cooperation between the plate and the valve seat realizes the blocking of the fluid, but in the actual use process, after the fluid is blocked by the gate plate, the pressure of the fluid acting on the gate plate is relatively high, thu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/02F16K3/30F16K31/60F16K31/50
CPCF16K3/0227F16K3/0281F16K3/30F16K31/50F16K31/60
Inventor 梁世添沈卫强梁世森俞国锋
Owner ZHEJIANG BIAOSHENG VALVE MFG CO LTD
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