CN211501759U

CN211501759U - Butterfly check valve with good sealing performance

Info

Publication number: CN211501759U
Application number: CN201922127059.8U
Authority: CN
Inventors: 傅涛
Original assignee: Tianjin Shengkaida Valve Co ltd
Current assignee: Tianjin Shengkaida Valve Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-09-15
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a butterfly check valve with good sealing, which relates to the field of fluid valves and comprises a valve body, wherein a pump rod, a fixed rod, a first valve and a second valve are arranged in the middle of the valve body, the pump rod is positioned below the fixed rod, and through the arrangement of antirust paint, the antirust paint can prevent components in the valve body from generating rust, thereby ensuring the service life of the butterfly check valve, leading the service life of the butterfly check valve to be longer, through the arrangement of a rubber pad, the rubber pad can ensure the sealing property between the valve body and the valve, because the rubber pad is soft, the valve and the rubber pad can not generate the condition of clamping shell, the rubber pad also indirectly plays the condition of leakage of the valve body, through the arrangement of a shunting column, the shunting column can lead fluid to generate shunting when contacting with the valve, leading the fluid to better pass through the valve, and improving the efficiency of the fluid passing, the operation is more convenient, and the effect of use is better for traditional mode.

Description

Butterfly check valve with good sealing performance

Technical Field

The utility model relates to a fluidal valve field, concretely relates to well sealed butterfly check valve.

Background

The butterfly check valve is a valve which automatically opens and closes a valve flap by the flow of a medium, and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve, the check valve belongs to an automatic valve and mainly has the main functions of preventing the medium from flowing backwards, preventing a pump and a driving motor from reversing and discharging the medium of a container, the check valve can also be used for providing a supply pipeline for an auxiliary system with pressure exceeding the system pressure, the check valve can be mainly divided into a swing check valve (rotating according to the gravity center), a lifting check valve (moving along the axis) and a butterfly check valve (rotating along the center), the butterfly check valve only allows the medium to flow towards one direction and prevents the medium from flowing towards the other direction, and the valve flap normally automatically works and is opened under the action of the fluid pressure flowing towards one direction; when fluid flows in the reverse direction, the valve clack is combined by the self weight of fluid pressure and the valve clack to act on a valve seat, so that the flow is cut off, when the existing butterfly check valve is used, due to the fact that analysis exists between the valve and the valve body, the sealing performance inside the valve body is not good enough, and the fluid impacts the valve greatly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a sealed good butterfly check valve, can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a butterfly check valve with good sealing performance comprises a valve body, wherein a pump rod, a fixed rod, a first valve and a second valve are arranged in the middle of the valve body, the pump rod is located below the fixed rod, the first valve is located below the pump rod, the second valve is located on one side of the first valve, the first valve is parallel to the second valve, a first connecting block, a second connecting block, a first spring and a second spring are arranged on the outer wall of the periphery of the pump rod, the first connecting block is located on one side of the second connecting block, the first spring is located on the other side of the second connecting block, the second spring is located on the other side of the first spring, and the first connecting block is connected with the second valve; no. two connecting blocks are connected with a valve, the outer wall of valve body is provided with the mounting hole, the inner wall of valve body is provided with the rubber pad, the rubber pad all is located around pump pole, dead lever, a valve and No. two valves, the lower extreme surface of valve body is provided with the reposition of redundant personnel post.

Preferably, the outer surfaces of the pump rod, the fixing rod, the first valve, the second valve, the first connecting block, the second connecting block, the first spring and the second spring are all provided with antirust paint.

Preferably, be provided with fixed screw line between valve body and the pump rod, the inner wall of valve body all can be dismantled with the both ends surface of pump rod through the screw line and be connected, the both ends surface fixed connection of welding and dead lever is passed through to the inside of valve body.

Preferably, be provided with the spout between pump rod and a connecting block and No. two connecting blocks, the outer wall of pump rod all is through the inner wall swing joint of spout and a connecting block and No. two connecting blocks, the quantity of a connecting block and No. two connecting blocks is two sets of.

Preferably, be provided with the draw-in groove between pump pole and a spring and No. two springs, the outer wall of pump pole all can be dismantled with the inner wall of a spring and No. two springs through the draw-in groove and be connected, the lower extreme surface of valve body is through the both ends fixed surface of welding and reposition of redundant personnel post to be connected.

Preferably, the equal fixed connection of one end and the dead lever of a spring and No. two springs, the other end of a spring and the rear end surface fixed connection of a valve, the other end of No. two springs and the rear end surface fixed connection of No. two valves.

Compared with the prior art, the utility model discloses following beneficial effect has: this butterfly check valve that seals well, setting through anti-rust paint, anti-rust paint can prevent that the inside subassembly of valve body from producing rust, thereby can ensure butterfly check valve's life, make butterfly check valve life more permanent, setting through the rubber pad, the rubber pad can ensure the leakproofness between valve body and the valve, because the rubber pad material is softer, so the condition of card shell can not be produced with the rubber pad to the valve, the rubber pad also indirect has played the condition that the seepage appears in the valve body, setting through the reposition of redundant personnel post, the reposition of redundant personnel post can make the fluid produce the reposition of redundant personnel when with the valve contact, make the passing through valve that the fluid can be better, the efficiency that the fluid passes through has been improved, the effect of use is better for traditional mode.

Drawings

Fig. 1 is a schematic view of the overall structure of a butterfly check valve with good sealing performance according to the present invention;

FIG. 2 is an internal side view of a well-sealed butterfly check valve body 1 of the present invention;

fig. 3 is a top view of the interior of a butterfly check valve body 1 of the present invention with good sealing;

fig. 4 is a rear view of the butterfly check valve body 1 with good sealing performance.

In the figure: 1. a valve body; 2. a pump rod; 3. fixing the rod; 4. a first valve; 5. a second valve; 6. a first connecting block; 7. a second connecting block; 8. a first spring; 9. a second spring; 10. mounting holes; 11. a rubber pad; 12. antirust paint; 13. and (4) a flow distribution column.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1-4, a butterfly check valve with good sealing performance comprises a valve body 1, wherein a pump rod 2, a fixed rod 3, a first valve 4 and a second valve 5 are arranged in the middle of the valve body 1, the pump rod 2 is positioned below the fixed rod 3, the first valve 4 is positioned below the pump rod 2, the second valve 5 is positioned on one side of the first valve 4, the first valve 4 is parallel to the second valve 5, a first connecting block 6, a second connecting block 7, a first spring 8 and a second spring 9 are arranged on the peripheral outer wall of the pump rod 2, the first connecting block 6 is positioned on one side of the second connecting block 7, the first spring 8 is positioned on the other side of the second connecting block 7, the second spring 9 is positioned on the other side of the first spring 8, and the first connecting block 6 is connected with the second valve 5; no. two connecting blocks 7 are connected with valve 4, and the outer wall of valve body 1 is provided with mounting hole 10, and the inner wall of valve body 1 is provided with rubber pad 11, and rubber pad 11 all is located pump pole 2, dead lever 3, valve 4 and No. two valves 5 around, and the lower extreme surface of valve body 1 is provided with reposition of redundant personnel post 13.

Further, the outer surfaces of the pump rod 2, the fixing rod 3, the first valve 4, the second valve 5, the first connecting block 6, the second connecting block 7, the first spring 8 and the second spring 9 are all provided with antirust paint 12, and the antirust paint 12 can prevent components from generating rust.

Further, be provided with fixed screw line between valve body 1 and the pump rod 2, the inner wall of valve body 1 all can be dismantled with the both ends surface of pump rod 2 through the screw line and be connected, and the both ends fixed surface of welding and dead lever 3 is passed through to the inside of valve body 1, and the welding can make between valve body 1 and the dead lever 3 more firm.

Further, be provided with the spout between pump rod 2 and connecting block 6 and No. two connecting blocks 7, the outer wall of pump rod 2 all is through spout and the inner wall swing joint of connecting block 6 and No. two connecting blocks 7, and the quantity of connecting block 6 and No. two connecting blocks 7 is two sets ofly, and the spout can make the activity that connecting block 6 and No. two connecting blocks 7 can be good.

Further, be provided with the draw-in groove between pump rod 2 and spring 8 and No. two springs 9, the outer wall of pump rod 2 all can be dismantled with the inner wall of spring 8 and No. two springs 9 through the draw-in groove and be connected, and the lower extreme surface of valve body 1 is through the both ends fixed surface of welding and reposition of redundant personnel post 13 to be connected, and reposition of redundant personnel post 13 can make better the butterfly check valve that passes through of fluid matter.

Further, the equal fixed connection of one end and dead lever 3 of a spring 8 and No. two springs 9, the other end of a spring 8 and the rear end fixed surface of a valve 4 are connected, the other end of No. two springs 9 and the rear end fixed surface of No. two valves 5 are connected, a spring 8 and No. two springs 9 can make the better resilience of a valve 4 and No. two valves 5.

It should be noted that the present invention is a butterfly check valve with good sealing, when in use, the butterfly check valve is fixedly installed through the installation hole 10, the side with the diversion column 13 corresponds to the flow direction of the fluid, when the fluid passes through, the diversion column 13 can divert the fluid to make the fluid directly flow to the first valve 4 and the second valve 5, when the fluid passes through the first valve 4 and the second valve 5, the first connecting block 6 and the second connecting block 7 can make the first valve 4 and the second valve 5 rotate through the chute, the fluid can flow out through the butterfly check valve, when no fluid passes through, the resilience of the first spring 8 and the second spring 9 can make the first valve 4 and the second valve 5 return to the original position, the fluid backflow is prevented, the impact force of the fluid is larger than the resilience of the first spring 8 and the second spring 9, otherwise, the fluid cannot pass through the first valve 4 and the second valve 5, is relatively practical.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A well-sealed butterfly check valve comprises a valve body (1), and is characterized in that: the middle part of the valve body (1) is provided with a pump rod (2), a fixed rod (3), a first valve (4) and a second valve (5), the pump rod (2) is positioned below the fixed rod (3), the first valve (4) is positioned below the pump rod (2), the second valve (5) is positioned at one side of the first valve (4), the first valve (4) is parallel to the second valve (5), the first connecting block (6), the second connecting block (7), the first spring (8) and the second spring (9) are arranged on the outer wall of the periphery of the pump rod (2), the first connecting block (6) is positioned at one side of the second connecting block (7), the first spring (8) is positioned at the other side of the second connecting block (7), the second spring (9) is positioned on the other side of the first spring (8), and the first connecting block (6) is connected with the second valve (5); no. two connecting blocks (7) are connected with valve (4), the outer wall of valve body (1) is provided with mounting hole (10), the inner wall of valve body (1) is provided with rubber pad (11), rubber pad (11) all are located around pump rod (2), dead lever (3), valve (4) and No. two valve (5), the lower extreme surface of valve body (1) is provided with reposition of redundant personnel post (13).

2. A well-sealed butterfly check valve in accordance with claim 1, wherein: the outer surfaces of the pump rod (2), the fixing rod (3), the first valve (4), the second valve (5), the first connecting block (6), the second connecting block (7), the first spring (8) and the second spring (9) are all provided with antirust paint (12).

3. A well-sealed butterfly check valve in accordance with claim 1, wherein: be provided with fixed screw line between valve body (1) and pump rod (2), the inner wall of valve body (1) all can be dismantled with the both ends surface of pump rod (2) through the screw line and be connected, the both ends surface fixed connection of welding and dead lever (3) is passed through to the inside of valve body (1).

4. A well-sealed butterfly check valve in accordance with claim 1, wherein: be provided with the spout between pump rod (2) and connecting block (6) and No. two connecting blocks (7), the outer wall of pump rod (2) all is through the inner wall swing joint of spout and connecting block (6) and No. two connecting blocks (7), the quantity of connecting block (6) and No. two connecting blocks (7) is two sets of.

5. A well-sealed butterfly check valve in accordance with claim 1, wherein: the pump rod (2) and a spring (8) and a second spring (9) are provided with a clamping groove therebetween, the outer wall of the pump rod (2) is detachably connected with the inner wall of the first spring (8) and the inner wall of the second spring (9) through the clamping groove, and the outer surface of the lower end of the valve body (1) is fixedly connected with the outer surface of the two ends of the diversion column (13) through welding.

6. A well-sealed butterfly check valve in accordance with claim 1, wherein: the equal fixed connection of one end and dead lever (3) of a spring (8) and No. two spring (9), the other end of a spring (8) and the rear end surface fixed connection of a valve (4), the other end of No. two spring (9) and the rear end surface fixed connection of No. two valve (5).