CN220416399U - Pipeline backflow preventing device - Google Patents

Abstract

The utility model belongs to the technical field of drainage, and discloses a pipeline backflow preventing device, which comprises a floating box assembly, a transmission assembly, a sliding assembly and a flap valve; the transmission assembly comprises a movable pulley, a fixed pulley and a pulley rope; the floating box assembly is connected with the movable pulley, the movable pulley is connected with the fixed pulley through a pulley rope, the movable pulley is driven to be in a movable suspension state through the pulley rope, the pulley rope is connected with the flap valve through a sliding assembly, and the sliding assembly drives the flap valve to open or close relative to the pipe orifice end of the pipe during reciprocating motion. The technical scheme that this pipeline anti-backflow device provided can more sensitively respond to the change control flap valve of water level and open and close, can both use the change of great scope appears to the water level, and the control effect is better, and simple structure.

Description

Pipeline backflow preventing device

Technical Field

The utility model belongs to the technical field of drainage, and particularly relates to a pipeline backflow preventing device.

Background

In China, urban drainage systems are generally divided into a confluence system and a diversion system, the old urban drainage systems with earlier construction time mainly adopt the confluence system, domestic sewage and rainwater are discharged through a set of drainage pipe networks or directly discharged into rivers, so that serious pollution is caused to river water bodies or the river water bodies are discharged to sewage treatment plants for treatment, and the investment and operation cost are increased. In recent years, with the development and perfection of urban drainage systems, the problem of diversion of rain and sewage is basically considered in new urban areas, the old urban areas are basically formed due to the fact that urban road systems are relatively high in diversion and transformation difficulty, a set of sewage pipe networks or rain water pipe networks are rebuilt in no space on many roads, the current method is mainly used for transformation by closure type confluence, closure wells are built at the tail ends of the pipe networks, dry season sewage is intercepted to sewage plants for treatment, the rainy season is discharged to river channels through overflow, the tail ends of discharge ports are provided with anti-backflow measures to prevent river channel water from flowing backwards to sewage interception pipelines, in the prior art, normally, a flap valve and a duckbill valve are arranged at the discharge ports to prevent backflow, the flap valve or the duckbill valve is opened and closed by means of gravity of water, when water is discharged, and the flap valve or the duckbill valve is pushed open for discharging when no water is discharged. The mode has certain defects that the water flow pressure needs to be pushed away, when the water flow in the pipe is smaller, the water flow cannot be pushed away, the drainage pipeline is deposited, and the water flow is not smoothly discharged.

In chinese patent CN 202440933U, "drain anti-backflow flap valve", an anti-backflow flap valve is disclosed, which comprises a base, a pipe orifice, a gate plate, a float, a gear box, a driving gear and a driven gear, wherein the float is used for controlling the gate to be closed and opened by buoyancy, but the valve is required to be controlled by rotation of the gear, so that the valve is easy to wear and cause failure, and the float is installed in front of the gate and has a certain influence on water flow.

Disclosure of Invention

The utility model aims to provide a pipeline backflow preventing device which can automatically control the opening and closing of a flap valve according to water level change.

The technical scheme for achieving the aim comprises the following steps.

The utility model provides a pipeline backflow preventing device, which comprises a buoyancy tank assembly, a transmission assembly, a sliding assembly and a flap valve, wherein the buoyancy tank assembly is connected with the transmission assembly;

the transmission assembly comprises a movable pulley, a fixed pulley and a pulley rope; the buoyancy tank assembly is connected with the movable pulley, the movable pulley is connected with the fixed pulley through the pulley rope, the movable pulley is driven to be in a movable suspension state through the pulley rope, the pulley rope is connected with the flap valve through the sliding assembly, and the sliding assembly drives the flap valve to open or close relative to the pipe orifice end of the pipe when in reciprocating motion.

In some of these embodiments, the slide assembly includes a guide, a deviator shaft, and a moveable member; the direction changing shaft is arranged on the guide piece, the pulley rope bypasses the direction changing shaft and then is connected with the movable piece, the movable piece is movably arranged on the guide piece and can reciprocate relative to the guide piece, the movable piece is hinged with the flap valve, and the movable piece drives the flap valve to open or close relative to the pipe orifice end of the pipeline when reciprocating relative to the guide piece.

In some embodiments, the guide member includes two guide rails, the two guide rails are arranged in parallel, two rollers are arranged at the bottom of the movable member, and the two rollers roll on the two guide rails respectively.

In some embodiments, the steering shaft includes a rotating shaft and two fixing blocks, opposite ends of the rotating shaft are rotatably connected to the two fixing blocks, the two fixing blocks are disposed on the guide member, a gap exists between the rotating shaft and the guide member, and the pulley rope coming out of the fixed pulley passes through the gap and then is connected to the movable member.

In some embodiments, two of the guide rails are disposed at an incline in the direction of movement of the moveable member, and the guide rails are at a higher elevation away from the first end of the flap valve than the second end of the flap valve.

In some embodiments, the sliding assembly further comprises an opening and closing member, and opposite ends of the opening and closing member are hinged with the movable member and the flap valve respectively.

In some embodiments, the buoyancy tank assembly is connected to the movable pulley through a connecting rod, and the connecting rod is of a telescopic rod structure.

In some embodiments, the buoyancy tank assembly comprises a fixed plate, a floating body arranged on the fixed plate and a filling piece, wherein the filling piece is provided with an openable filling port.

In some embodiments, the floating body is arranged at the top of the fixed plate, and the filling piece is arranged at the bottom of the fixed plate; and the floating body is an inflatable floating plate.

In some embodiments, the filling member comprises a case body having a net structure, and the case body is connected to the fixing plate through an L-shaped right angle fixing member.

The technical scheme provided by the utility model has the following advantages and effects:

this pipeline anti-backflow device is through setting up movable pulley, fixed pulley and pulley rope cooperation between buoyancy tank subassembly and slip subassembly, when buoyancy tank subassembly is according to the change come-up or come-down of water level, can drive slip subassembly reciprocating motion through movable pulley, fixed pulley and pulley rope cooperation to drive the mouth of pipe end that the flap valve was relative to the pipeline and open or close, wherein through the cooperation of movable pulley and fixed pulley messenger can remove twice pulley rope distance under the double water level change, so as to the change control flap valve that can more sensitively respond to the water level open and close, can both use to the change homoenergetic of great scope appears in the water level, the control effect is better, and simple structure.

Drawings

FIG. 1 is a schematic view of a pipeline backflow prevention device according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a sliding assembly of the pipe anti-backflow device of fig. 1.

Reference numerals illustrate:

100. a pipeline backflow preventing device;

1. a buoyancy tank assembly; 11. a fixing plate; 12. a floating body; 13. a filler; 2. a transmission assembly; 21. a movable pulley; 22. a fixed pulley; 23. a pulley rope; 3. a sliding assembly; 31. a guide member; 311. a guide rail; 32. a steering shaft; 321. a rotating shaft; 322. a fixed block; 33. a movable member; 331. a roller; 34. an opening and closing member; 4. a flap valve; 5. a connecting rod;

200. a pipe; 201. river course barricade.

Detailed Description

In order that the utility model may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As used herein, the terms "first and second …" are used merely to distinguish between names and not to represent a particular number or order unless otherwise specified or defined.

The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.

The term "fixed" or "connected" as used herein may be directly fixed or connected to an element, or indirectly fixed or connected to an element.

In this embodiment, the backflow preventing device 100 mainly uses the backflow preventing process at the end of the pipe 200. The pipeline 200 may be a sewage interception pipeline, and is generally disposed through the river retaining wall 201. The backflow preventing device 100 for pipeline in this embodiment performs backflow preventing treatment on the sewage interception pipeline at the river retaining wall 201, and performs specific installation and use principle description, however, in other embodiments, the backflow preventing device 100 for pipeline is not limited to performing backflow preventing treatment on the sewage interception pipeline at the river retaining wall 201, and other suitable pipelines 200 may be adapted to other environments, and no particular limitation is made herein.

The utility model provides a pipeline backflow preventing device 100, as shown in fig. 1 and 2, wherein the pipeline backflow preventing device 100 comprises a buoyancy tank assembly 1, a transmission assembly 2, a sliding assembly 3 and a flap valve 4. The transmission assembly 2 comprises a movable pulley 21, a fixed pulley 22 and a pulley rope 23; the buoyancy tank assembly 1 is connected with the movable pulley 21, the movable pulley 21 is connected with the fixed pulley 22 through a pulley rope 23, the movable pulley 21 is driven to be in a movable suspension state through the pulley rope 23, the pulley rope 23 is connected with the flap valve 4 through the sliding assembly 3, and the sliding assembly 3 drives the flap valve 4 to open or close relative to the pipe orifice end of the pipeline 200 when in reciprocating motion. Specifically, one end of the pulley rope 23 and the fixed pulley 22 may be installed at an external position such as a retaining wall 201 of a river, and the pulley rope 23 is sequentially wound around the movable pulley 21 and the fixed pulley 22 and then connected to the sliding assembly 3. Wherein the movable pulley 21 is positioned between the fixed pulley 22 and the connection of the pulley rope 23 and the retaining wall 201 of the river so that the movable pulley 21 is in a movable suspended state. The sliding component 3 can be installed right above the pipeline 200, and the flap valve 4 is connected with the sliding component 3 and is located right above the pipe orifice end of the pipeline 200, wherein the flap valve 4 can be driven to open or close relative to the pipe orifice end of the pipeline 200 when the sliding component 3 reciprocates.

Specifically, the pipe backflow prevention device 100 operates in the following general manner:

under normal water level, the flap valve 4 can be pulled to be completely opened just under the action of gravity, buoyancy and tension by adjusting the weight of the pulley rope 23 and the buoyancy tank assembly 1, and the flap valve is 90 degrees with the mouth end of the pipeline 200. When the water level rises, the buoyancy tank assembly 1 moves upwards to drive the movable pulley 21 to move upwards, the pulley rope 23 slides to drive the sliding assembly 3 to move towards the pipe orifice end of the pipeline 200, the flap valve 4 is slowly closed, and when the water level reaches the bottom height of the pipe orifice end, the flap valve 4 is in a completely closed state.

In sum, this pipeline anti-backflow device 100 is through setting up movable pulley 21, fixed pulley 22 and pulley rope 23 cooperation between buoyancy tank assembly 1 and slip subassembly 3, when buoyancy tank assembly 1 was floated up or is floated down according to the change of water level, can drive slip subassembly 3 reciprocating motion through movable pulley 21, fixed pulley 22 and pulley rope 23 cooperation, thereby drive the mouth of pipe end that flap valve 4 was relative to pipeline 200 and open or close, wherein through the cooperation of movable pulley 21 and fixed pulley 22 messenger can remove twice pulley rope 23 distance under double water level change, so as to be able to more sensitively respond to the change control flap valve 4 of water level and open and close, can both use to the change of great scope appears in the water level, the control effect is better, and simple structure.

In some embodiments, as shown in fig. 2, the sliding assembly 3 comprises a guide 31, a deviator shaft 32 and a mobile 33; the steering shaft 32 is arranged on the guide member 31, the pulley rope 23 bypasses the steering shaft 32 and is connected with the movable member 33, the movable member 33 is movably arranged on the guide member 31 and can reciprocate relative to the guide member 31, the movable member 33 is hinged with the flap valve 4, and the movable member 33 drives the flap valve 4 to open or close relative to the pipe orifice end of the pipe 200 when reciprocating relative to the guide member 31. The guiding element 31 may be disposed directly above the pipe 200 along the drainage direction of the pipe 200, so that the movable element 33 can reciprocate along the drainage direction of the pipe 200 relative to the guiding element 31, the steering shaft 32 is used for steering the direction of the pulley rope 23 extending from the fixed pulley 22, so that the pulley rope 23 can smoothly turn from the fixed pulley 22 to the direction of the guiding element 31, and when the buoyancy tank assembly 1 is driven to float by the change of the water level, the pulley rope 23 can be driven to slide, and the movable element 33 is driven to reciprocate directionally by the sliding of the pulley rope 23, so that the flap valve 4 is smoothly opened or closed under the driving of the movable element 33.

In some embodiments, as shown in fig. 2, the guide member 31 includes two guide rails 311, two guide rails 311 are disposed in parallel, two rollers 331 are disposed at the bottom of the movable member 33, and the two rollers 331 are disposed on the two guide rails 311 in a rolling manner. As can be appreciated, the sliding member 33 rolls on the guide rail 311 by the roller 331, so that the friction force can be reduced and the sliding smoothness of the sliding member 33 can be improved.

In some embodiments, as shown in fig. 2, along the moving direction of the movable member 33, the two guide rails 311 are obliquely arranged, and the height of the guide rail 311 away from the first end of the flap valve 4 is higher than the height of the guide rail 311 close to the second end of the flap valve 4, so as to drive the movable member 33 to slide down along the inclined slope of the guide rail 311 to close the flap valve 4 when the water level rises, thereby further improving the sliding smoothness of the movable member 33.

In some embodiments, as shown in fig. 2, the steering shaft 32 includes a rotating shaft 321 and two fixing blocks 322, opposite ends of the rotating shaft 321 are rotatably connected to the two fixing blocks 322, and the two fixing blocks 322 are disposed on the guide member 31, a gap exists between the rotating shaft 321 and the guide member 31, and the pulley rope 23 coming out of the fixed pulley 22 passes through the gap and is connected to the movable member 33. Wherein the rotation shaft 321 is supported by two fixing blocks 322 to be suspended above the guide 31, and provides enough space so that the pulley rope 23 which is lowered from the upper fixed pulley 22 can be connected to the movable member 33 after passing through a gap between the rotation shaft 321 and the guide 31, and the rotation shaft 321 can be rotated with respect to the fixing blocks 322 to be capable of supporting sliding and turning of the pulley rope 23 when the water level rises or falls.

In some embodiments, as shown in fig. 2, the sliding assembly 3 further includes an opening and closing member 34, and opposite ends of the opening and closing member 34 are hinged to the movable member 33 and the flap 4, respectively. Specifically, the opening and closing member 34 may be a rod structure, which is not particularly limited herein. At normal water level, the opening and closing member 34, the movable member 33 and the flap valve 4 are in a straight line state, so that the flap valve 4 and the pipe orifice end of the pipe 200 form 90 degrees. When the water level rises, the movable part 33 moves towards the pipe orifice end of the pipeline 200, and an angle is gradually formed between the opening and closing part 34, the movable part 33 and the flap valve 4, and at the moment, the flap valve 4 can be smoothly closed.

In some embodiments, as shown in fig. 1, the buoyancy tank assembly 1 is connected to the movable pulley 21 through a connecting rod 5, and the connecting rod 5 is a telescopic rod structure. It will be appreciated that by providing the connecting rod 5 with a telescopic structure between the buoyancy tank assembly 1 and the movable pulley 21, the flap valve 4 is in a fixed state when the water level of the flap valve 4 is not required to be changed, such as when the normal water level is slightly raised, but still lower than the reverse filling level, the flap valve 4 can not be closed at this time, the buoyancy tank assembly 1 is slightly raised, the connecting rod 5 is contracted at this time, and when the connecting rod 5 is contracted to a limit state, the flap valve 4 is driven to be closed by the continuous rising of the water level at this time. When the water level is lower than the normal water level, the connecting rod 5 stretches out and drives the buoyancy tank assembly 1 to move downwards through the telescopic performance of the connecting rod 5, at the moment, the transmission assembly 2 and the sliding assembly 3 above the buoyancy tank assembly are kept still, and the flap valve 4 is still in a complete opening state and does not influence the drainage of the pipeline 200.

In some embodiments, as shown in fig. 1, the buoyancy tank assembly 1 includes a fixed plate 11, and a floating body 12 and a filler 13 disposed on the fixed plate 11, the filler 13 having an openable filler port. The filling member 13 may be used to fill the filling member 13 with a filling material of a weight, such as stone, brick, etc., according to a required weight, and the required weight may be adjusted according to the size of the flap valve 4.

In some embodiments, as shown in fig. 1, the floating body 12 is disposed at the top of the fixed plate 11, and the filler 13 is disposed at the bottom of the fixed plate 11; and the floating body 12 is an inflatable floating plate. Wherein the material of the inflatable floating plate can be rubber, EVA, PVC, PE and the like. There is no particular limitation herein. Wherein the floating body 12 is provided at the top of the fixed plate 11 so that the floating body 12 floats on the water level.

In some embodiments, as shown in fig. 1, the filling member 13 includes a case having a net structure, and the case is connected to the fixing plate 11 by an L-shaped right angle fixing member. The net-shaped box body can bear the weight required by the formation of the weight on the one hand, and can avoid the influence of water flow backlog in the box body on the weight.

The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims (8)

1. The pipeline backflow preventing device is characterized by comprising a buoyancy tank assembly, a transmission assembly, a sliding assembly and a flap valve;

the transmission assembly comprises a movable pulley, a fixed pulley and a pulley rope; the floating box assembly is connected with the movable pulley, the movable pulley is connected with the fixed pulley through the pulley rope, the movable pulley is driven to be in a movable suspension state through the pulley rope, the pulley rope is connected with the flap valve through the sliding assembly, and the sliding assembly drives the flap valve to open or close relative to the pipe orifice end of the pipe when in reciprocating motion;

the sliding component comprises a guide piece, a steering shaft and a movable piece; the pulley rope bypasses the steering shaft and is connected with the movable piece, the movable piece is movably arranged on the guide piece and can reciprocate relative to the guide piece, the movable piece is hinged with the flap valve, and the movable piece drives the flap valve to open or close relative to the pipe orifice end of the pipe when reciprocating relative to the guide piece;

the sliding assembly further comprises an opening and closing piece, and the opposite ends of the opening and closing piece are respectively hinged with the movable piece and the flap valve.

2. A backflow prevention device for a pipeline according to claim 1, wherein the guide member comprises two guide rails, the two guide rails are arranged in parallel, two rollers are arranged at the bottom of the movable member, and the two rollers roll on the two guide rails respectively.

3. A pipeline backflow preventing device as claimed in claim 1, wherein the steering shaft comprises a rotating shaft and two fixing blocks, opposite ends of the rotating shaft are rotatably connected to the two fixing blocks, the two fixing blocks are arranged on the guide member, a gap exists between the rotating shaft and the guide member, and the pulley rope coming out of the fixed pulley is connected with the movable member after passing through the gap.

4. A conduit anti-backflow device as in claim 2 wherein two of said rails are disposed obliquely in the direction of movement of said movable member and wherein the height of said rails away from the first end of said flap valve is greater than the height of said rails closer to the second end of said flap valve.

5. A pipeline backflow prevention device as claimed in any one of claims 1 to 4, wherein the buoyancy tank assembly is connected to the travelling block by a connecting rod, the connecting rod being of telescopic construction.

6. A pipeline anti-backflow device as claimed in any one of claims 1 to 4, wherein the buoyancy tank assembly comprises a fixed plate and a float and filler member provided on the fixed plate, the filler member having an openable filler port.

7. The pipe anti-backflow device of claim 6, wherein the floating body is disposed at the top of the fixed plate, and the filler is disposed at the bottom of the fixed plate; and the floating body is an inflatable floating plate.

8. A pipeline backflow prevention device as claimed in claim 6, wherein the filler comprises a box body having a net structure, and the box body is connected to the fixing plate by an L-shaped right angle fixing member.