CN219139935U - Self-control butterfly type backflow prevention device for large-caliber pipeline - Google Patents

Abstract

The utility model discloses self-control butterfly backflow prevention equipment for a large-caliber pipeline, which comprises a pipeline main body for conveying fluid, wherein a butterfly valve block is arranged in the pipeline main body, the pipeline main body comprises a first pipeline, a second pipeline and a third pipeline which are communicated end to end in sequence, the butterfly valve block is arranged in each of the first pipeline and the third pipeline, the butterfly valve block comprises an annular sealing seat and a strip-shaped sealing plate, the sealing plate is positioned at one side of the middle position of the sealing seat and is vertically arranged, the sealing plate divides the sealing seat into two diversion sections, two butterfly valve cores are rotatably connected to the side wall of the sealing plate, and the positions of the butterfly valve cores correspond to the positions of the corresponding diversion sections. According to the utility model, through arranging the two butterfly valve groups, air separation can be realized, and the problem of fluid backflow of a large-caliber pipeline is effectively solved.

Description

Self-control butterfly type backflow prevention device for large-caliber pipeline

Technical Field

The utility model relates to the technical field of fluid equipment, in particular to self-control butterfly backflow preventing equipment for a large-caliber pipeline.

Background

The check valve can realize the one-way flow of fluid in the pipeline according to the unique structure, can avoid the backflow of the fluid in the pipeline, ensures the stable operation of equipment, has various types and can be roughly divided into a ball check valve and a butterfly check valve according to the size of the valve core; the ball-type check valve has smaller volume and is widely applied to various hydraulic equipment, the ball-type valve core of the ball-type check valve needs to be matched with the inner diameter of a pipeline, and the ball-type check valve is difficult to manufacture and work for the pipeline with larger caliber.

The butterfly type one-way valve is widely applied to a large-caliber pipeline, and can effectively avoid the backflow of liquid in the large-caliber pipeline; the butterfly check valve commonly used in the market is generally simple in arrangement, a butterfly valve core matched with the butterfly check valve is independently arranged in a pipeline, the sealing effect is limited, and when the size of the pipeline is continuously increased or the service time is prolonged, the edge part of the butterfly valve core is easy to damage to cause fluid leakage, so that a good backflow prevention effect cannot be achieved; therefore, it is important to effectively solve the problem of fluid backflow in large-caliber pipelines.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides self-control butterfly backflow prevention equipment for a large-caliber pipeline, which can realize air separation by arranging two butterfly valve groups and effectively solve the problem of fluid backflow of the large-caliber pipeline.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a heavy-calibre pipeline is with automatic control butterfly type anti-return equipment, includes the pipeline main part that is used for carrying fluid, the inside butterfly valves that is provided with of pipeline main part, pipeline main part is including first pipeline, second pipeline and the third pipeline that head and tail communicate in proper order, all be provided with butterfly valves in first pipeline and the third pipeline, butterfly valves includes annular sealing seat and banding closing plate, the closing plate is located sealing seat intermediate position one side and vertical setting, the closing plate will the sealing seat separates for two water conservancy diversion intervals, the closing plate lateral wall rotates and is connected with two butterfly valve cores, the position of butterfly valve core corresponds with the water conservancy diversion interval position that corresponds, be provided with torsion elastic component between butterfly valve core and the closing plate, second pipeline lateral wall intercommunication has drainage subassembly, drainage subassembly includes drainage pipe, be provided with drainage device in the drainage pipe.

Preferably, the first pipeline, the second pipeline and the third pipeline are detachably and fixedly connected through a flange mounting plate.

Preferably, the water draining device comprises a water draining main body, a control channel is formed in the inner wall of the water draining main body, a water draining valve core is connected in the control channel in a sealing sliding mode, and a control part for controlling the position of the water draining valve core is arranged at the top end of the water draining main body.

Preferably, the control part comprises a threaded adjusting rod which is rotatably connected with the upper end surface of the drain valve core.

Preferably, the control part comprises a control joint communicated with the first pipeline, the control joint is communicated with the control channel through a connecting pipeline, and an elastic element is connected between the water draining valve core and the inner wall of the control channel.

Preferably, the edge parts of the two butterfly valve cores are fixedly connected with magnetic blocks, and the two magnetic blocks are mutually attracted.

Compared with the prior art, the utility model has the beneficial effects that:

compared with the traditional single butterfly valve group, the two butterfly valve groups are arranged in the large-caliber pipeline, so that the overall tightness can be effectively improved, the backflow of fluid can be effectively prevented, and the normal operation of the pipeline and corresponding equipment is ensured; the second pipeline is arranged between the two butterfly valve groups, so that liquid in the second pipeline can be emptied in a state that the valve groups are closed, air separation is realized, and the integral sealing effect is further enhanced; the fluid leaked from the downstream can be timely discharged from the drainage assembly, so that the backflow of the fluid is further effectively avoided, and stable work is ensured; through setting up components such as control joint, connecting tube, sluicing case, elastic element, it can be according to the opening and close of first pipeline internal pressure size automatic control drainage subassembly, wholly automatic formation need not manual intervention, and is simple convenient, reliable and stable.

Drawings

FIG. 1 is a schematic perspective view of a self-control butterfly backflow prevention device for large-caliber pipelines;

fig. 2 is a schematic top view of a self-control butterfly backflow preventing device for a large-caliber pipeline according to the present utility model;

fig. 3 is a schematic side view of a self-control butterfly backflow preventing device for a large-caliber pipeline.

In the figure: 1. a first pipe; 2. a second pipe; 3. a third conduit; 4. butterfly valve group; 401. a sealing seat; 402. a sealing plate; 403. a butterfly valve core; 5. a drainage assembly; 501. a control joint; 502. a connecting pipe; 503. a water draining device; 5031. a water discharge main body; 5032. a drain valve core; 5033. an elastic element; 504. and a drainage pipeline.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1-3, an automatic control butterfly backflow preventing device for a large-caliber pipeline comprises a pipeline main body for conveying fluid, wherein a butterfly valve group 4 is arranged in the pipeline main body, the butterfly valve group 4 can play a role of a one-way valve, liquid backflow can be avoided, and stable operation of the pipeline is ensured; wherein pipeline main part is including first pipeline 1, second pipeline 2 and the third pipeline 3 that the head and the tail communicate in proper order, all is provided with butterfly valves 4 in first pipeline 1 and the third pipeline 3, can play better anti-return flow effect through setting up two sets of butterfly valves 4.

The butterfly valve group 4 comprises an annular sealing seat 401 and a strip-shaped sealing plate 402, the sealing plate 402 is positioned at one side of the middle position of the sealing seat 401 and is vertically arranged, the sealing plate 402 divides the sealing seat 401 into two diversion sections, the two diversion sections are distributed left and right, the side wall of the sealing plate 402 is rotationally connected with two butterfly valve cores 403, the butterfly valve cores 403 are semicircular, sealing gaskets are arranged at the edge parts of the butterfly valve cores, the positions of the butterfly valve cores 403 correspond to the positions of the corresponding diversion sections, a torsion elastic piece is arranged between the butterfly valve cores 403 and the sealing plate 402, the torsion elastic piece can be selected as a torsion spring, the butterfly valve cores 403 can be rotated to different positions under the double functions of the torsion spring and water pressure and are in an opened or closed state so as to control the opening or closing in a pipeline, and when the water pressure at the upstream side is suddenly reduced or the water flow reflux pressure at the downstream side is increased, the butterfly valve cores 403 are reset under the action of the torsion elastic piece, and the butterfly valve group 4 is in a closed state so as to prevent liquid from flowing backwards; the butterfly valve group 4 is arranged in the first pipeline 1 and the third pipeline 3, so that the butterfly valve group can play a role in double sealing, and the butterfly valve group has a better effect on a large-caliber pipeline.

The side wall of the second pipeline 2 is communicated with a drainage assembly 5, the drainage assembly 5 comprises a drainage pipeline 504, a water draining device 503 is arranged in the drainage pipeline 504, liquid reserved in the second pipeline 2 can be emptied by controlling the opening and closing of the drainage pipeline 504 through the water draining device 503, the first pipeline 1 and the third pipeline 3 can be separated through air, and liquid backflow is avoided; when the two valves are in the closed state, the drain assembly 5 is in the open state, and part of leakage liquid in the third pipeline 3 can be directly discharged from the drain assembly 5 and cannot flow back into the first pipeline 1, so that backflow of liquid in the pipeline is effectively avoided.

Wherein first pipeline 1, second pipeline 2 and third pipeline 3 all pass through flange mounting dish detachably fixed connection, and the flange mounting dish passes through bolt detachably fixed, the quick installation of being convenient for.

The water draining device 503 includes a water draining main body 5031, a control channel is formed on the inner wall of the water draining main body 5031, a water draining valve core 5032 is connected in the control channel in a sealing sliding manner, a control component for controlling the position of the water draining valve core 5032 is arranged at the top end of the water draining main body 5031, the water draining valve core 5032 is controlled to be at different positions by the control component, the water draining pipeline 504 can be in an opened or closed state, and then the fluid state of liquid in the pipeline is controlled.

As an alternative control; the control component comprises a threaded adjusting rod, the threaded adjusting rod is rotatably connected with the upper end surface of the drain valve core 5032, the threaded adjusting rod penetrates through the drain main body 5031 and is in threaded connection with the drain main body, and the position of the drain valve core 5032 can be adjusted by rotating the threaded adjusting rod.

As a preferred control mode; the control part comprises a control joint 501 communicated with the first pipeline 1, the control joint 501 is communicated with the control channel through a connecting pipeline 502, an elastic element 5033 is connected between a drain valve core 5032 and the inner wall of the control channel, at the moment, when the pressure in the upstream first pipeline 1 is reduced, the water pressure in the control joint 501 and the connecting pipeline 502 is rapidly reduced, the drain valve core 5032 moves upwards to reset under the action of the elastic element 5033, and the drain pipeline 504 is in an opened state to realize the discharge of liquid in the second pipeline 2; by setting the control mode, the whole control is automatic, and manual adjustment is not needed; when the water pressure in the first pipeline 1 is increased, the drain valve core 5032 can be pushed to move downwards at the moment, so that the sealing of the drain pipeline 504 is completed; the structure is stable, reliable, simple and practical.

The two butterfly valve cores 403 are fixedly connected with the magnetic blocks at the edge parts, when the two butterfly valve cores 403 are in an opened state, the two magnetic blocks are mutually attracted, the mutually attracted magnetic blocks can restrain the butterfly valve cores 403, the torsion of the torsion elastic piece is overcome, the resistance of liquid flow can be reduced, and the normal flow of the liquid is ensured; and keep away from each other in the process that two butterfly valve core 403 closed, magnetic force disappears at this moment, and under the effect of torsion elastic component, two butterfly valve core 403 reset fast, has guaranteed the sensitivity of closing.

When the water pressure of the upstream is larger than the torsion force of the torsion elastic piece, the butterfly valve group 4 is in an open state under the cooperation of the two, water flow can flow from the upstream to the downstream, the water discharge assembly 5 is in a closed state, and the pipeline is in a normal conduction state.

When the upstream water pressure is reduced or the downstream water pressure backflow is increased, the torsion spring drives the butterfly valve core 403 to reset, and at the moment, the two butterfly valve groups 4 are in a closed state, so that the pipeline cannot circulate; and open the liquid in the drainage assembly 5 discharge second pipeline 2 at this moment, form the air in the second pipeline 2 and cut off, can cut off first pipeline 1 and third pipeline 3 to the moisture that permeates flows out from drainage assembly 5 can not flow in first pipeline 1, has further effectively avoided the backward flow of the intraductal liquid.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a large-caliber is automatic control butterfly backflow preventing equipment for pipeline, includes the pipeline main part that is used for carrying fluid, pipeline main part inside is provided with butterfly valves (4), its characterized in that:

the pipeline main part is including first pipeline (1), second pipeline (2) and third pipeline (3) that head and tail communicate in proper order, all be provided with butterfly valve group (4) in first pipeline (1) and third pipeline (3), butterfly valve group (4) are including annular sealing seat (401) and banding closing plate (402), closing plate (402) are located sealing seat (401) intermediate position one side and vertical setting, closing plate (402) will sealing seat (401) separate into two water conservancy diversion intervals, closing plate (402) lateral wall rotates and is connected with two butterfly case (403), the position of butterfly case (403) corresponds with the water conservancy diversion interval position that corresponds, be provided with torsion elastic component between butterfly case (403) and closing plate (402), second pipeline (2) lateral wall intercommunication has drainage subassembly (5), drainage subassembly (5) are including pipeline (504), be provided with drainage device (503) in drainage pipeline (504).

2. The self-control butterfly backflow prevention device for the large-caliber pipeline according to claim 1, wherein the first pipeline (1), the second pipeline (2) and the third pipeline (3) are detachably and fixedly connected through flange mounting plates.

3. The self-control butterfly backflow prevention device for a large-caliber pipeline according to claim 1, wherein the water draining device (503) comprises a water draining main body (5031), a control channel is formed on the inner wall of the water draining main body (5031), a water draining valve core (5032) is connected in a sealing sliding manner in the control channel, and a control component for controlling the position of the water draining valve core (5032) is arranged at the top end of the water draining main body (5031).

4. A self-controlling butterfly backflow preventing apparatus for large caliber pipes as claimed in claim 3, wherein said control member comprises a screw thread adjusting lever rotatably connected to an upper end surface of the drain valve core (5032).

5. A self-controlling butterfly backflow preventing apparatus for large caliber pipe according to claim 3, characterized in that the control part comprises a control joint (501) communicated with the first pipe (1), the control joint (501) is communicated with the control channel through a connecting pipe (502), and an elastic element (5033) is connected between the water draining valve core (5032) and the inner wall of the control channel.

6. The self-control butterfly backflow preventing device for large-caliber pipelines according to claim 1, wherein the edge parts of the two butterfly valve cores (403) are fixedly connected with magnetic blocks, and the two magnetic blocks are attracted to each other.

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