CN218670773U

CN218670773U - Sectional type large-flow vertical check valve

Info

Publication number: CN218670773U
Application number: CN202223076533.7U
Authority: CN
Inventors: 汤冬冬; 朱新炎; 毛益民
Original assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Current assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-21
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a large-traffic vertical check valve of sectional type belongs to valve technical field, which comprises a valve body, the inside cavity of valve body is equipped with the valve pocket, the valve body upper end is equipped with the valve gap, the valve gap lower extreme be equipped with the first import of valve pocket intercommunication, the valve pocket bottom is equipped with the export, coaxial being equipped with in the valve pocket is used for opening and close the first elasticity valve clack subassembly of first import, be equipped with the second import in the middle of the first elasticity valve clack subassembly, coaxial second elasticity valve clack subassembly that is equipped with in the second import, second elasticity valve clack subassembly can be opened and close the second import. The utility model discloses large-traffic vertical check valve of sectional type, first elasticity valve clack subassembly and second elasticity valve clack subassembly segmentable are opened, can use long service life in large-traffic pipeline.

Description

Sectional type large-flow vertical check valve

Technical Field

The utility model belongs to the technical field of the valve, more specifically relates to a large-traffic vertical check valve of sectional type.

Background

In the prior art, the vertical check valve is often only provided with a single valve clack which is opened under the pressure action of fluid, and in the actual use process, a water hammer action exists in a pipeline, wherein the water hammer action refers to the phenomenon that in a closed pipeline system, large pressure fluctuation is caused and vibration is caused due to the rapid change of fluid flow. The instant pressure can greatly exceed the normal pressure, so that the fluid impacts the valve clack, the valve clack is collided with the valve body and is easy to damage, and the service life of the vertical check valve is greatly reduced.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model aims to provide a large-traffic vertical check valve of sectional type aims at solving among the prior art vertical check valve and only is suitable for among the little flow pipeline, the problem that the fluid flow that passes through is less in the check valve, life is low.

In order to realize the above-mentioned purpose, the utility model provides a large-traffic vertical check valve of sectional type, which comprises a valve body, the inside cavity of valve body is equipped with the valve pocket, the valve body upper end is equipped with the valve gap, the valve gap lower extreme be equipped with the first import of valve pocket intercommunication, the valve pocket bottom is equipped with the export, coaxial being equipped with in the valve pocket is used for opening and close the first elasticity valve clack subassembly of first import, be equipped with the second import in the middle of the first elasticity valve clack subassembly, coaxial second elasticity valve clack subassembly that is equipped with in the second import, second elasticity valve clack subassembly can be opened and close the second import.

Furthermore, first elasticity valve clack subassembly is including first valve clack, the second import is located first valve clack center, first valve clack outer wall is equipped with first seal groove, be equipped with first sealing member in the first seal groove, first valve clack below is equipped with first spring, first spring one end is supported and is established on the first valve clack, the other end is supported and is established on the valve body, first spring has the drive first valve clack laminating the motion trend of first import.

Furthermore, second elasticity valve clack subassembly is including the second valve clack, be equipped with the second seal groove on the second valve clack, be equipped with the second sealing member in the second seal groove, second valve clack below is equipped with the second spring, second spring one end is supported and is established on the second valve clack, the other end is supported and is established on the valve body, the second spring has the drive the laminating of second valve clack the motion trend of second import.

Furthermore, the outer wall of the first valve clack is circumferentially and uniformly provided with limiting convex blocks, clamping grooves are formed in the middle of the limiting convex blocks, and the inner wall of the valve body is circumferentially and uniformly provided with vertical guide convex blocks which correspond to the clamping grooves in position and are the same in quantity.

Furthermore, a first limiting groove used for limiting the installation of the upper end of the first spring is formed in the lower end face of the limiting lug, and a second limiting groove used for limiting the installation of the lower end of the first spring is formed in the bottom of the vertical guide lug.

Furthermore, the second valve flap comprises a valve flap main body, the first sealing groove is located on the outer wall of the valve flap main body, and a guide shaft is coaxially arranged on the valve flap main body.

Furthermore, a first support is coaxially arranged in the valve cover, a second support is coaxially arranged in the valve body, and a guide hole used for limiting the motion guide of the guide shaft is formed between the first support and the second support.

Furthermore, a first limiting part used for mounting the upper end of the second spring is coaxially arranged below the valve clack main body, and a second limiting part used for mounting the lower end of the second spring is arranged at the upper end of the second support.

Furthermore, the lower end face of the first inlet is provided with an annular bulge in an axially extending mode, and the annular bulge is used for being attached to and sealing the first inlet with the first sealing element.

Furthermore, the inner wall of the second inlet is provided with a conical surface.

Through the technical scheme of the utility model, compared with the prior art, owing to be equipped with first elasticity valve clack subassembly, second elasticity valve clack subassembly, wherein, first elasticity valve clack subassembly is used for opening and close first import, and second elasticity valve clack subassembly is used for opening and close the second import, and when the flow was less in the pipeline, first elasticity valve clack subassembly compressed under the pressure effect of fluid, opened first import, and second elasticity valve clack subassembly synchronous compression keeps the second import to close; when the flow in the pipeline is large, the first elastic valve clack component is compressed under the pressure action of fluid to open the first inlet, the second elastic valve clack component is further compressed under the pressure action of the fluid to open the second inlet to improve the flow of the fluid passing through the check valve, and the two valve clack components can be opened in sections and can be used in a large-flow pipeline; simultaneously, because first import is opened to first elasticity valve clack subassembly under fluidic pressure effect, along with the further increase of pressure, second import can be opened to second elasticity valve clack subassembly, can play the effect of buffering pressure release, prevents that the too big direct impact valve body of valve clack atress from leading to damaging, improves check valve's life.

Drawings

FIG. 1 is an exploded view of a part of a segmented high flow vertical check valve provided by the present invention;

FIG. 2 is a cross-sectional view of a segmented high flow vertical check valve provided by the present invention;

FIG. 3 is a cross-sectional view of another perspective of the segmented high flow vertical check valve provided by the present invention;

FIG. 4 is a schematic assembly view of the valve body of the segmented high flow vertical check valve provided by the present invention;

FIG. 5 is a schematic diagram of a second resilient flap assembly of the segmented high flow vertical check valve provided by the present invention;

fig. 6 is an assembly schematic diagram of a first resilient valve flap assembly and a second resilient valve flap assembly of the segmented high flow vertical check valve provided by the present invention;

the structure corresponding to each numerical mark in the drawings is as follows: 1-valve body, 11-valve cavity, 12-inlet, 13-vertical guide projection, 131-second limit groove, 14-second support, 141-second limit part, 2-valve cover, 21-first inlet, 211-annular boss, 22-first support, 23-seal ring, 3-first elastic valve flap component, 31-second inlet, 32-first valve flap, 33-first sealing element, 34-first spring, 35-limit projection, 351-clamping groove, 352-first limit groove, 4-second elastic valve flap component, 41-second valve flap, 411-valve flap main body, 412-guide shaft, 413-first limit part, 42-second sealing element and 43-second spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention will be further explained with reference to the following detailed drawings and examples.

Example 1

Referring to fig. 1 to 3, the utility model provides a sectional type large flow vertical check valve, which comprises a valve body 1, a valve cavity 11 is arranged in the valve body 1, a valve cover 2 is arranged at the upper end of the valve body 1, and a sealing ring 23 is extruded between the valve cover 2 and the valve body 1 in order to improve the sealing effect of the connection between the valve body 1 and the valve cover 2; the lower end of the valve cover 2 is provided with a first inlet 21 communicated with the valve cavity 11, the bottom of the valve cavity 11 is provided with an outlet 12, a first elastic valve clack component 3 for opening and closing the first inlet 21 is coaxially arranged in the valve cavity 11, a second inlet 31 is arranged in the middle of the first elastic valve clack component 3, a second elastic valve clack component 4 is coaxially arranged in the second inlet 31, and the second inlet 31 can be opened and closed by the second elastic valve clack component 4.

When the sectional type large-flow vertical check valve is assembled and connected with a pipeline, the first elastic valve clack component 3 and the second elastic valve clack component 4 have two working conditions, when the flow of fluid in the pipeline is small, the first elastic valve clack component 3 is compressed under the pressure action of the fluid, the first inlet 21 is opened, the second elastic valve clack component 5 is synchronously compressed, and the second inlet 31 is kept closed; when the flow in the pipeline is larger or the water hammer occurs, the first elastic valve clack component 3 is compressed under the pressure action of fluid to open the first inlet 21, the second elastic valve clack component 4 is further compressed under the pressure action of the fluid to open the second inlet 31, and the two valve clack components can be opened in a segmented mode to improve the flow of the fluid passing through the check valve.

The first elastic valve flap assembly 3 is used for opening and closing the first inlet 21 and comprises a first valve flap 32, as shown in fig. 2, the second inlet 31 is located at the center of the first valve flap 32, in order to improve the sealing performance when the first inlet 21 is closed, a first sealing groove is formed in the outer wall of the first valve flap 32, a first sealing element 33 is arranged in the first sealing groove, a first spring 34 is arranged below the first valve flap 32, one end of the first spring 34 abuts against the first valve flap 32, the other end of the first spring abuts against the valve body 1, and the first spring 34 has a movement tendency of driving the first valve flap 32 to be attached to the first inlet 21. If the planar seal with the surface attached is adopted between the first inlet 21 and the first sealing element 33, the requirements on the machining and assembling precision of parts are higher, in order to simplify the machining and assembling difficulty, the lower end face of the first inlet 21 is provided with an annular protrusion 211 along the axial extension, and the annular protrusion 211 is used for attaching and sealing the first inlet 21 with the first sealing element 33.

The second elastic valve flap assembly 4 is used for opening and closing the second inlet 31, and comprises a second valve flap 41, in order to improve the sealing performance when the second inlet 31 is closed, a second sealing groove is arranged on the second valve flap 41, a second sealing element 42 is arranged in the second sealing groove, the second sealing element 42 is attached to and sealed with the second inlet 31, in order to further improve the sealing effect, the inner wall of the second inlet 31 is provided with a conical surface, and similarly, the second sealing element 42 is also provided with a corresponding conical surface; a second spring 43 is arranged below the second valve flap 41, one end of the second spring 43 is abutted against the second valve flap 41, the other end of the second spring 43 is abutted against the valve body 1, and the second spring 43 has a movement tendency of driving the second valve flap 41 to be attached to the second inlet 31.

In the present embodiment, the first sealing member 33 and the second sealing member 42 are made of a flexible material such as rubber or silicone.

Example 2

As shown in fig. 1 to fig. 6, this embodiment is a further improvement on embodiment 1, and is specifically as follows:

in order to lead to first elasticity valve clack subassembly 3 in the motion process, it is specific, first valve clack 32 outer wall circumference equipartition has spacing lug 35, is equipped with draw-in groove 351 in the middle of the

spacing lug

35, and 1 inner wall circumference equipartition of valve body has vertical direction lug 13 corresponding, the quantity the same with draw-in groove 351 position.

Furthermore, in order to facilitate positioning of the first spring 34 during installation, a first limiting groove 352 for limiting the installation of the upper end of the first spring 34 is disposed on the lower end surface of the limiting projection 35, and a second limiting groove 131 for limiting the installation of the lower end of the first spring 34 is disposed at the bottom of the vertical guiding projection 13.

In order to guide the second elastic valve flap assembly 4 in the moving process, specifically, in this embodiment, the second valve flap 41 includes a valve flap main body 411, the first sealing groove is located on the outer wall of the valve flap main body 411, and a guide shaft 412 is coaxially disposed on the valve flap main body 411; the valve cover 2 is coaxially provided with a first support 22, the valve body 1 is coaxially provided with a second support 14, and a guide hole for guiding and limiting the movement of the guide shaft 412 is formed between the first support 22 and the second support 14.

Furthermore, in order to mount and limit the second spring 43, a first limiting portion 413 for mounting the upper end of the second spring 43 is coaxially arranged below the valve flap main body 411, and a second limiting portion 141 for mounting the lower end of the second spring 43 is arranged at the upper end of the second bracket 14.

When the sectional type large-flow vertical check valve is used, the sectional type large-flow vertical check valve has two working conditions, namely a first working condition that the first inlet 21 is opened and the second inlet 31 is closed, and under the action of fluid pressure, at the moment, the elastic force generated by the first spring 34 is smaller than the elastic force generated by the second spring 43, the first spring 34 and the second spring 43 are synchronously compressed, the first inlet 21 is opened, and the second inlet 31 is kept closed; in a second condition, the first inlet 21 is open and the second inlet 31 is open; along with the fluid pressure when continuously increasing, or when the water hammer effect appears, the elasticity that first spring 34 produced is greater than the elasticity that second spring 43 produced, and second spring 43 can carry out further compression under the effect of pressure, and second flap 41 downstream this moment, second import 31 is opened, improves the fluid flow that passes through in the check valve, also can avoid the water hammer effect, prevents the striking of flap and valve body, improves the life of check valve.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sectional type large-flow vertical check valve is characterized in that: including valve body (1), the inside cavity of valve body (1) is equipped with valve pocket (11), valve body (1) upper end is equipped with valve gap (2), valve gap (2) lower extreme be equipped with first import (21) of valve pocket (11) intercommunication, valve pocket (11) bottom is equipped with export (12), coaxial being equipped with in valve pocket (11) is used for opening and close first elasticity valve clack subassembly (3) of first import (21), be equipped with second import (31) in the middle of first elasticity valve clack subassembly (3), coaxial second elasticity valve clack subassembly (4) that are equipped with in second import (31), second elasticity valve clack subassembly (4) can be opened and close second import (31).

2. The segmented high flow vertical check valve of claim 1, wherein: first elasticity valve clack subassembly (3) are including first valve clack (32), second import (31) are located first valve clack (32) center, first valve clack (32) outer wall is equipped with first seal groove, be equipped with first sealing member (33) in the first seal groove, first valve clack (32) below is equipped with first spring (34), first spring (34) one end is supported and is established on first valve clack (32), and the other end is supported and is established on valve body (1), first spring (34) have the drive first valve clack (32) laminating the motion trend of first import (21).

3. The segmented high flow vertical check valve of claim 2, wherein: second elasticity valve clack subassembly (4) is including second valve clack (41), be equipped with the second seal groove on second valve clack (41), be equipped with second sealing member (42) in the second seal groove, second valve clack (41) below is equipped with second spring (43), second spring (43) one end is supported and is established on second valve clack (41), the other end is supported and is established on valve body (1), second spring (43) have the drive second valve clack (41) laminating the motion trend of second import (31).

4. The segmented high flow vertical check valve of claim 2, wherein: first valve clack (32) outer wall circumference equipartition has spacing lug (35), be equipped with draw-in groove (351) in the middle of spacing lug (35), valve body (1) inner wall circumference equipartition have with draw-in groove (351) position corresponds, the same vertical direction lug (13) of quantity.

5. The segmented high flow vertical check valve of claim 4, wherein: the lower end face of the limiting lug (35) is provided with a first limiting groove (352) used for limiting the upper end of the first spring (34), and the bottom of the vertical guide lug (13) is provided with a second limiting groove (131) used for limiting the lower end of the first spring (34).

6. The segmented high flow vertical check valve of claim 3, wherein: the second valve clack (41) is including valve clack main part (411), first seal groove is located valve clack main part (411) outer wall, coaxial guiding axle (412) that is equipped with on the valve clack main part (411).

7. The segmented high flow vertical check valve of claim 6, wherein: the valve is characterized in that a first support (22) is coaxially arranged in the valve cover (2), a second support (14) is coaxially arranged in the valve body (1), and a guide hole used for limiting the motion guide of the guide shaft (412) is formed in the middle of the first support (22) and the second support (14).

8. The segmented high flow vertical check valve of claim 7, wherein: the valve clack main part (411) below is coaxially provided with a first limiting part (413) used for installing the upper end of the second spring (43), and the upper end of the second support (14) is provided with a second limiting part (141) used for installing the lower end of the second spring (43).

9. The segmented high flow vertical check valve of claim 2, wherein: the lower end face of the first inlet (21) is provided with an annular bulge (211) in an axially extending mode, and the annular bulge (211) is used for being attached to and sealing the first inlet (21) with the first sealing piece (33).

10. The segmented high flow vertical check valve of claim 1, wherein: the inner wall of the second inlet (31) is provided with a conical surface.