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A fixed structure, double disc check valve and its assembly process

A technology of fixed structure and assembly process, which is applied in the direction of valve device, valve casing structure, lift valve, etc., and can solve problems such as leakage and poor sealing of check valves

Active Publication Date: 2019-09-20
NEWAY VALVE SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the fixed structure of the valve clack in the prior art will cause the bracket plate to swing in the inner cavity of the valve, resulting in poor sealing of the check valve and leakage.

Method used

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  • A fixed structure, double disc check valve and its assembly process
  • A fixed structure, double disc check valve and its assembly process
  • A fixed structure, double disc check valve and its assembly process

Examples

Experimental program
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Effect test

Embodiment 1

[0093] This embodiment provides a fixing structure, including two sets of fixing mechanisms and a fixing shaft 1 arranged between the two sets of fixing mechanisms and parallel to the rotating shaft 7 in the valve body 2; corresponding to any set of fixing mechanisms, the valve body 2 A first blind groove 21 recessed inward is formed on the inner wall along the axial direction of the valve body, and a second blind groove 22 recessed inward is formed along the radial direction of the valve body. Since a set of fixing mechanisms are respectively provided on both ends of the rotating shaft 7, two sets of first blind slots 21 and second blind slots 22 corresponding to each other are provided on the inner wall of the valve body 2 .

[0094] Such as Figure 1 to Figure 4 As shown, any set of fixing mechanisms includes a support seat 3 and a limit assembly 4, wherein the support seat 3 is arranged on the inner wall of the valve body 2 along the axial direction of the valve body, one ...

Embodiment 2

[0115] This embodiment provides a fixed structure, such as Figure 9 As shown, compared with the fixing structure provided in Embodiment 1, the only difference is that the structure of the transition piece 41 is different. The transition piece 41 does not have the above-mentioned first installation groove 412, but the direction of the fixed shaft 1 toward the second One end of the blind slot 22 defines a second installation groove 11 that is inwardly recessed and communicates with the installation through hole 31 , and the end of the transition piece 41 away from the second blind slot 22 is installed in the second installation groove 11 . Such as Figure 9 As shown, the transition piece 41 is a first pin with a rectangular longitudinal cross-sectional shape, and a second through hole 411 is opened on the first pin, and the first fastener is a second pin or a screw, and the second pin or screw passes through the first pin in turn. The through hole 32 and the second through hol...

Embodiment 3

[0130] This embodiment provides a fixed structure, such as Figure 10 to Figure 14 As shown, compared with the fixing structure provided by Embodiment 1, the difference exists in that: the structure of the limit assembly 4 is different, the above-mentioned transition piece 41 is not provided in the limit assembly 4, and the fourth through hole (corresponding to the embodiment The second through hole 411 in 1) is opened on the fixed shaft 1, and the outer end surface of the extension end of the support seat 3 is provided with a third through hole communicating with the installation through hole 31 (corresponding to the first through hole 32 in the embodiment 1 ).

[0131] Such as Figure 13 As shown, the second blind groove 22 is provided on the end face of the valve body 2 in the axial direction, extends axially along the valve body and is recessed radially toward the inner wall of the valve body. The second blind groove 22 includes The transverse opening 222 and the spheric...

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Abstract

The invention provides a fixed structure, a double-flap type check valve and an assembly technology of the double-flap type check valve. The fixed structure comprises a fixed shaft parallel to a rotating shaft, and a fixing mechanism arranged at the two ends of the fixed shaft and used for installing the two ends of the rotating shaft in an inner cavity of a valve body correspondingly. The inner wall surface of the valve body is provided with a first blind groove and a second blind groove. The fixing mechanism comprises a supporting seat and a limiting assembly which limits one end of the fixed shaft in the second blind groove. The check valve comprises the fixed structure. The assembly technology includes the following steps that the rotating shaft, the fixed shaft, the supporting seat and a transition piece are pre-installed to form a combined body, and the combined body is arranged the inner cavity of the valve body; and the supporting seat and the transition piece are anti-rotationally connected by a locking piece. The second blind groove does not penetrate through the side wall of the valve body. The fixed shaft rotates slightly only with the center of the fixed shaft as the rotating shaft in the second blind groove, and cannot slide in the second blind groove. The supporting seat is kept in the direction parallel to the axial direction of the valve body. Excursion of the rotating shaft is avoided, and the sealing performances of two valve flaps in the valve body and the inner cavity wall surface of the valve body are ensured.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a fixed structure, a double-disc check valve and an assembly process thereof. Background technique [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. For example, the double disc check valve has a high safety and reliability factor and can be widely used in various occasions. The structure of the double disc check valve is mostly as the check valve disclosed in the Chinese patent document CN204419121U, which includes a valve body 1, a rotating shaft rotatably installed in the inner cavity of the valve body, a left valve disc and a right valve sleeve sleeved on the rotating shaft. One end is fixed on the left valve disc, the other end is fixed on the torsion spring on the right valve disc, and two sets of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/20F16K15/03F16K27/02
Inventor 陈军宋世君
Owner NEWAY VALVE SUZHOU