Anti-backflow device for underground structure

Abstract

The utility model discloses an anti-backflow device for an underground structure, which comprises a water level floating detection valve, an intercepting ditch is arranged at the upper end of a ramp plate of the underground structure, and the water level floating detection valve is arranged at the top of the intercepting ditch; the waterproof roller shutter comprises guide rails and a shutter plate, the ramp plate is provided with a strip-shaped through hole, the strip-shaped through hole is formed in the width direction of the ramp plate, the upper end of the shutter plate is movably inserted into the through hole, the guide rails are laid on retaining walls on the two opposite sides of the ramp plate respectively, and the two guide rails are oppositely provided with vertically-arranged guide grooves. The two opposite sides of the curtain plate are arranged in the guide grooves of the two guide rails in a sliding mode. The driving reel is rotatably mounted between the two retaining walls, and a lifting rope is connected between the driving reel and the upper end of the curtain plate; and the controller is connected to the water level floating detection valve and the driving reel. The underground structure anti-backflow device solves the problems that an existing underground structure anti-backflow method is intelligent and slow in response speed.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a device for preventing backflow in underground structures. Background Technology

[0002] Currently, ramp entrances in underground structures generally lack backflow prevention systems. When backflow occurs, sandbags are manually piled up at the top of the ramp to prevent it. Existing backflow prevention methods for underground structures are not intelligent enough and have a slow response time.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a backflow prevention device for underground structures is provided to solve the problems of insufficient intelligence and slow response speed of existing backflow prevention methods for underground structures.

[0005] To achieve the above objectives, a backflow prevention device for underground structures is provided, comprising:

[0006] A water level fluctuation detection valve is installed on the top of a drainage ditch at the upper end of the ramp slab of the underground structure.

[0007] A waterproof roller shutter includes guide rails and a curtain panel. The ramp has a strip-shaped through hole along its width. The upper end of the curtain panel is movably inserted into the through hole. The guide rails are laid on the retaining walls on opposite sides of the ramp. Vertical guide grooves are formed on the two guide rails. The opposite sides of the curtain panel slide in the guide grooves of the two guide rails.

[0008] A drive roller is rotatably mounted between two retaining walls, and a lifting cable is connected between the drive roller and the upper end of the curtain panel;

[0009] The controller is connected to the water level floating detection valve and the drive reel. When the water level floating detection valve detects that the water level in the intercepting ditch exceeds a threshold, the controller controls the drive reel to retract the lifting cable, so that the top of the curtain extends above the ramp slab to close the ramp of the underground structure and prevent backflow.

[0010] Furthermore, the waterproof roller blind also includes a roller and a first motor for driving the roller. The roller is rotatably mounted below the ramp slab, and the lower end of the curtain panel is wound around the roller. The first motor is drivenly connected to the roller.

[0011] Furthermore, the drive reel is connected to a second motor, and the second motor is signal-connected to the controller.

[0012] Furthermore, a sealing element is provided between the wall of the through hole and the curtain plate.

[0013] Furthermore, the sealing element is a rubber sheet, one side of which is fixedly installed on the ramp plate on the side of the through hole near the intercepting ditch, and the other side of which overlaps on the ramp plate on the other side of the through hole away from the intercepting ditch.

[0014] The beneficial effect of this utility model is that the device for preventing backflow in underground structures can automatically identify and activate the waterproof roller shutter according to the water level of the intercepting ditch on the slope slab, and automatically adjust (raise or lower) according to the water level, making the operation simpler and effectively solving the problem of preventing backflow in underground structures.

[0015] This utility model relates to an anti-backflow device for underground structures. It automatically lowers the height of the waterproof roller shutter on a ramp according to changes in water level, ensuring the ramp remains passable once the water level decreases. A drive roller is installed at the top of the guide rails on both sides of the ramp. A controller connected to a water level monitoring valve senses the water level; as the water level rises, the controller activates the drive roller to raise the waterproof roller shutter, preventing rainwater from entering.

[0016] This utility model provides an anti-backflow device for underground structures, applicable to all underground structure entrances, which can automatically and efficiently prevent rainwater backflow. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the anti-backflow device for underground structures according to an embodiment of the present invention.

[0019] Figure 2 This is a top view of an embodiment of the present invention for an anti-backflow device for underground structures. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figure 1 and Figure 2 As shown, this utility model provides a device for preventing backflow in underground structures, including: a water level floating detection valve 1, a waterproof roller shutter, a drive roller 3, and a controller.

[0023] In this embodiment, a drainage ditch 40 is provided at the upper end of the ramp slab 4 of the underground structure. Retaining walls 5 are formed on opposite sides of the ramp slab in the width direction. A ramp is formed between the two retaining walls and the ramp slab.

[0024] The water level fluctuation detection valve 1 is installed at the top of the intercepting ditch 40. The water level fluctuation detection valve 1 is used to collect the water level height in the intercepting ditch.

[0025] The waterproof roller shutter includes guide rails 21 and curtain panels 22. The ramp slab 4 has strip-shaped through holes. These through holes are arranged along the width of the ramp slab 4. The upper end of the curtain panel 22 is movably inserted into the through holes. Under normal conditions, the upper end of the curtain panel is positioned within the through holes. Guide rails 21 are respectively laid on the opposite sides of the ramp slab 4's retaining walls 5. Vertically arranged guide grooves are formed on both guide rails 21. The opposite sides of the curtain panel 22 slide within the guide grooves of the two guide rails 21.

[0026] The drive roller 3 is rotatably mounted between the two retaining walls 5. A lifting cable is connected between the drive roller 3 and the upper end of the curtain panel 22.

[0027] The controller is connected to the water level floating detection valve 1 and the drive reel 3.

[0028] When the water level in the intercepting ditch 40 exceeds the threshold, the controller controls the drive roller 3 to retract the lifting cable, so that the top of the curtain 22 extends to the top of the ramp 4 to close the ramp of the underground structure and prevent backflow.

[0029] In this embodiment, when the water level in the intercepting ditch overflows, the controller activates the drive reel, and the lifting cable is wound around the drive reel so that the curtain extends to the outside of the through hole, so that the top of the curtain extends to the top of the ramp slab to close the ramp of the underground structure.

[0030] In a preferred embodiment, the waterproof roller blind also includes a roller 23 and a first motor for driving the roller 23. The roller 23 is rotatably mounted below the ramp 4. The lower end of the curtain panel 22 is wound onto the roller 23. The first motor is drivenly connected to the roller 23.

[0031] The first motor is connected to the drum. The first motor drives the drum so that the lower end of the curtain is wound around the drum. With the cooperation of the drive shaft, the upper end of the curtain can be retracted into the through hole to avoid affecting the normal driving on the ramp.

[0032] In this embodiment, the drive roller 3 is connected to a second motor, and the second motor's signal is connected to the controller. When it is necessary to raise the curtain panel to close the ramp, the controller activates the second motor. The output shaft of the second motor is connected to the drive roller. Both ends of the drive roller are mounted on the retaining wall via bearings. The drive roller is positioned along the width of the ramp panel.

[0033] As a preferred embodiment, a sealing element 6 is provided between the wall of the through hole and the curtain plate 22.

[0034] In this embodiment, the seal 6 is a rubber sheet. Under normal conditions, the seal can act as a dust baffle to prevent dust and debris from entering the through hole. After the controller raises the curtain panel, the rubber sheet seals the space between the curtain panel and the through hole.

[0035] Specifically, one side of the rubber sheet is fixedly installed on the ramp plate 4 on the side of the through hole closest to the intercepting ditch 40. The other side of the rubber sheet overlaps the ramp plate 4 on the other side of the through hole away from the intercepting ditch 40.

[0036] This utility model provides a device for preventing backflow into underground structures. It can automatically identify and activate the waterproof roller shutter based on the water level of the intercepting ditch on the ramp slab, and automatically adjust (raise or lower) according to the water level, making operation simpler and effectively solving the problem of backflow prevention in underground structures.

[0037] This utility model relates to an anti-backflow device for underground structures. It automatically lowers the height of the waterproof roller shutter on a ramp according to changes in water level, ensuring the ramp remains passable once the water level decreases. A drive roller is installed at the top of the guide rails on both sides of the ramp. A controller connected to a water level monitoring valve senses the water level; as the water level rises, the controller activates the drive roller to raise the waterproof roller shutter, preventing rainwater from entering.

[0038] This utility model provides an anti-backflow device for underground structures, applicable to all underground structure entrances, which can automatically and efficiently prevent rainwater backflow.

[0039] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A device for preventing backflow in underground structures, characterized in that, include: A water level fluctuation detection valve is installed on the top of a drainage ditch at the upper end of the ramp slab of the underground structure. A waterproof roller shutter includes guide rails and a curtain panel. The ramp has a strip-shaped through hole along its width. The upper end of the curtain panel is movably inserted into the through hole. The guide rails are laid on the retaining walls on opposite sides of the ramp. Vertical guide grooves are formed on the two guide rails. The opposite sides of the curtain panel slide in the guide grooves of the two guide rails. A drive roller is rotatably mounted between two retaining walls, and a lifting cable is connected between the drive roller and the upper end of the curtain panel; The controller is connected to the water level floating detection valve and the drive reel. When the water level floating detection valve detects that the water level in the intercepting ditch exceeds a threshold, the controller controls the drive reel to retract the lifting cable, so that the top of the curtain extends above the ramp slab to close the ramp of the underground structure and prevent backflow.

2. The anti-backflow device for underground structures according to claim 1, characterized in that, The waterproof roller blind also includes a roller and a first motor for driving the roller. The roller is rotatably mounted below the ramp slab, and the lower end of the curtain slab is wound around the roller. The first motor is drivenly connected to the roller.

3. The anti-backflow device for underground structures according to claim 1, characterized in that, The drive shaft is connected to a second motor, and the second motor is connected to the controller via a signal.

4. The anti-backflow device for underground structures according to claim 1, characterized in that, A sealing element is provided between the wall of the through hole and the curtain plate.

5. The anti-backflow device for underground structures according to claim 4, characterized in that, The sealing element is a rubber sheet. One side of the rubber sheet is fixedly installed on the ramp plate on the side of the through hole closest to the intercepting ditch, and the other side of the rubber sheet overlaps the ramp plate on the other side of the through hole away from the intercepting ditch.

Images