Emergency drainage device for flood prevention and emergency rescue of riverway

Abstract

The invention belongs to the technical field of drainage, and particularly discloses a river flood prevention emergency rescue emergency drainage device which comprises a water suction pump, a water suction assembly is arranged at the end of a water suction pipe of the water suction pump, the water suction assembly comprises a square pipe, and two square frames are symmetrically installed on the surface of the square pipe; water inlet grooves are formed in the four end faces of the square frames correspondingly, first filter plates are installed in the water inlet grooves through rotating shafts, movable frames are movably installed on the surfaces of the square pipes and movably installed between the two square frames, and pushing plates are fixedly installed on the surfaces of the movable frames. A pushing plate is installed on the bottom of the square pipe, the pushing plate corresponds to an opening of the water inlet groove, supporting frames are installed at the two ends of the bottom of the square pipe, and a driving assembly is arranged between the two supporting frames and located under the square pipe. Therefore, the flood prevention and drainage efficiency and reliability are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drainage, and in particular relates to an emergency drainage device for flood prevention and rescue in a river. Background Art

[0002] Emergency drainage for river flood control and rescue refers to a series of rapid and effective drainage measures and actions taken to protect people's lives and property and mitigate disaster losses when rivers experience floods, waterlogging, and other emergencies. It is a key component of river flood control and rescue efforts, aiming to promptly remove excess water, alleviate pressure on rivers, and avoid or minimize the occurrence of dangerous situations such as levee breaches and regional inundation.

[0003] Existing emergency drainage devices for flood prevention and rescue in rivers often have a large amount of debris mixed in the river water, such as branches, plastic garbage, mud, aquatic plants, etc. These debris can easily clog the water inlet or pipe of the pump, resulting in drainage interruption. To solve the blockage problem, some equipment will add a filter device at the water inlet end, but the filter screen or filter plate is easily covered and accumulated by debris during use, and still needs to be manually cleaned regularly, which not only increases labor intensity, but also affects drainage efficiency due to downtime. Especially in emergency situations, frequent cleaning will delay the rescue time. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an emergency drainage device for river flood prevention and rescue.

[0005] To achieve the above objectives, the present invention provides a river flood prevention and rescue emergency drainage device, including a water pump, a water pumping assembly is provided at the end of the water pumping pipe, the water pumping assembly includes a square tube, the square tube is connected to the end of the water pumping pipe, two square frames are symmetrically installed on the surface of the square tube, four end faces of the square frame are provided with water inlet grooves, the water inlet groove passes through the square tube, a first filter plate is installed inside the water inlet groove through a rotating shaft, a movable frame is movably installed on the surface of the square tube, the movable frame is movably installed between the two square frames, a push plate is fixedly installed on the surface of the movable frame, the push plate corresponds to the opening of the water inlet groove, support frames are installed at both ends of the bottom of the square tube, a driving assembly is provided between the two supporting frames and directly below the square tube, the driving assembly can drive the movable frame to slide back and forth on the surface of the square tube, and a buoyancy assembly is provided above the water pumping assembly.

[0006] In the above technical solution, further, a pushing column is installed on the end face of the movable frame, and the pushing column includes a main column, one end of the main column is fixedly connected to the movable frame, and the other end of the main column is provided with a plug-in groove, and a first spring is provided inside the plug-in groove, and the end of the first spring is connected to the plug-in column, and the plug-in column is movably installed in the plug-in groove through the first spring, and a pushing head is fixedly installed on the other end of the plug-in column, and the main column, the plug-in column and the pushing head all movably pass through the square frame, and the plug-in column is located below the first filter plate.

[0007] In the above technical solution, further, a protruding block is installed on the middle end surface of the pushing plate close to the driving assembly, and a movable groove is opened on the surface of the protruding block. The driving assembly includes a motor box, and the motor box is fixed to the middle end of the support frame by bolts. A stepper motor is arranged inside the motor box, and a turntable is arranged on the top of the motor box. The output end of the stepper motor is fixedly connected to the turntable, and a boss is fixedly installed on the end of the upper surface of the turntable, and the surface of the boss is movably engaged in the movable groove.

[0008] In the above technical solution, further, a second filter plate is movably provided inside the square tube and close to one end of the water pumping pipe, and a light rod is fixedly installed on the surface of the second filter plate away from the water pumping pipe. The other end of the light rod movably passes through the square tube, and a rectangular plate is fixedly provided on the surface of the light rod. A second spring is connected between the rectangular plate and the inner wall of the square tube.

[0009] In the above technical solution, further, an arc bulge is fixedly provided on the end of the turntable, an L-shaped rod is fixedly installed on one end of the polished rod outside the square tube, and the end of the L-shaped rod corresponds to the arc bulge.

[0010] In the above technical solution, further, the stepper motor is sealed and arranged inside the motor box.

[0011] In the above technical solution, further, the inner wall of the water inlet trough is configured to be arc-shaped, and the arc matches the moving track of the first filter plate.

[0012] In the above technical solution, further, the buoyancy assembly includes a support plate, which is fixed to the top of the square tube by bolts, a storage tube is provided above the support plate, an inflatable float is provided above the storage tube, the bottom of the inflatable float is connected to the bottom end inside the storage tube through a wiring harness, and a connecting rope is provided on the top of the inflatable float.

[0013] In the above technical solution, further, one end of the square tube away from the water pumping pipe is detachable and fixed by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The first filter plate intercepts large debris such as branches and plastic bottles in the river, while the second filter plate intercepts small debris such as silt and grass clippings, forming a double protection. This reduces the probability of debris entering the water pump at the source, significantly reducing the risk of pump blockage and impeller wear. The drive assembly uses a rotary table linkage mechanism to simultaneously realize the top-down rotation of the first filter plate and the scraping of the push plate, automatically removing debris accumulated on the surface of the first filter plate. This solves the problem of traditional filter devices requiring frequent shutdowns for manual cleaning. It is particularly suitable for emergency scenarios such as flood prevention and rescue, ensuring drainage continuity. At the same time, it can also make the second filter plate slide back and forth periodically inside the square tube, which can actively shake off the attached mud and sand and other small debris, greatly reducing the probability of clogging of the second filter plate and ensuring the long-term effectiveness of secondary filtration; In the buoyancy component, the inflatable float is folded and stored inside the storage tube when not inflated. Its bottom is connected to the bottom of the storage tube through a wiring harness (to prevent the float from detaching). The connecting rope on the top can be used for fixing or pulling. The buoyancy of the inflatable float can balance the gravity of the pumping component, reducing the risk of tilting or overturning caused by water impact, uneven bottom or damage to the support frame. The top connecting rope is fixed to the shore to further limit the drift of the device. It is especially suitable for river environments with turbulent water flow to ensure the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the pumping assembly and buoyancy assembly proposed in the present invention; Figure 3 This is a schematic diagram of the bottom structure of the water pumping assembly proposed in the present invention; Figure 4 This is a schematic diagram of the drive assembly structure proposed by the present invention; Figure 5 This is a schematic diagram of the internal structure of the square tube proposed by the present invention; Figure 6 The present invention proposes Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic cross-sectional view of the pushing column proposed in the present invention.

[0016] In the figure: 1. water pump; 2. water pumping assembly; 3. square tube; 4. support frame; 5. square frame; 6. water inlet trough; 7. first filter plate; 8. movable frame; 9. protruding block; 10. movable trough; 11. push plate; 12. push column; 13. main column; 14. first spring; 15. plug-in column; 16. push head; 17. motor box; 18. turntable; 19. protruding column; 20. arc protrusion; 21. L-shaped rod; 22. light rod; 23. rectangular plate; 24. second spring; 25. second filter plate; 26. support plate; 27. storage tube; 28. inflatable float. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-Figure 7 The shown device is an emergency drainage device for flood prevention and rescue in a river, comprising a water pump 1, a water pumping assembly 2 being provided at the end of a water pumping pipe of the water pump 1, the water pumping assembly 2 comprising a square tube 3, the square tube 3 being connected to the end of the water pumping pipe, two square frames 5 being symmetrically installed on the surface of the square tube 3, the four end faces of the square frame 5 being provided with a water inlet trough 6, the water inlet trough 6 passing through the square tube 3, the interior of the water inlet trough 6 being provided with a first filter plate 7 via a rotating shaft, a movable frame 8 being movably installed on the surface of the square tube 3, the movable frame 8 being movably installed between the two square frames 5, a pushing plate 11 being fixedly installed on the surface of the movable frame 8, the pushing plate 11 corresponding to the opening of the water inlet trough 6, support frames 4 being installed at both ends of the bottom of the square tube 3, a driving assembly being provided between the two support frames 4 and directly below the square tube 3, the driving assembly being capable of driving the movable frame 8 to slide back and forth on the surface of the square tube 3, A buoyancy component is provided above the pumping assembly 2. After the water pump 1 is started, negative pressure is generated through the water pumping pipe, and the water in the river channel will enter the water pumping pipe through the water pumping assembly 2. In the water pumping assembly 2, the square tube 3 is connected to the water pumping pipe, and the two square frames 5 on its surface provide a channel for water inlet. The four end faces of the square frame 5 are provided with water inlet grooves 6. Water can flow into the interior of the square tube 3 from the water inlet grooves 6 in multiple directions, and finally be discharged by the water pump 1 through the water pumping pipe to achieve flood control and drainage. The first filter plate 7 inside the water inlet groove 6 will filter the incoming water, intercept debris in the water, and prevent debris from entering the water pumping pipe or the inside of the water pump 1 to cause blockage. The device can realize automatic clearing and double filtration, and is a river flood control and rescue emergency drainage device that is adaptable to harsh water environments, so as to improve the efficiency and reliability of flood control and drainage, and solve the problem that the filtering device in the prior art is easily blocked and requires manual clearing.

[0019] The end surface of the movable frame 8 is equipped with a pushing column 12, which includes a main column 13. One end of the main column 13 is fixedly connected to the movable frame 8, and the other end of the main column 13 is provided with a plug-in slot. A first spring 14 is provided inside the plug-in slot, and the end of the first spring 14 is connected with a plug-in column 15. The plug-in column 15 is movably installed in the plug-in slot through the first spring 14, and a pushing head 16 is fixedly installed on the other end of the plug-in column 15. The main column 13, the plug-in column 15 and the pushing head 16 all moveably penetrate the square frame 5, and the plug-in column 15 is below the first filter plate 7. When the driving assembly drives the movable frame 8 to slide back and forth on the surface of the square tube 3, the movable frame 8 moves back and forth. The pushing column 12 on the end face of the movable frame 8 moves synchronously with it. Since the main column 13, the plug-in column 15 and the pushing head 16 all move through the square frame 5, and the plug-in column 15 is below the first filter plate 7, the movement path of the pushing column 12 will directly act on the first filter plate 7. When the pushing column 12 slides in a certain direction with the movable frame 8, the plug-in column 15 will contact the bottom of the first filter plate 7 and push upward (because the first filter plate 7 is installed through a rotating shaft and can rotate around the axis). When the first filter plate 7 rotates to the same plane as the opening of the water inlet trough 6, the pushing plate 11 will push the debris on the surface of the first filter plate 7 until the debris is away from the water inlet area.

[0020] The middle end surface of the pushing plate 11 near the driving assembly is provided with a protruding block 9, and a movable groove 10 is opened on the surface of the protruding block 9. The driving assembly includes a motor box 17, which is fixed to the middle end of the support frame 4 by bolts. A stepping motor is provided inside the motor box 17, and a turntable 18 is provided on the top of the motor box 17. The output end of the stepping motor is fixedly connected to the turntable 18, and the end of the upper surface of the turntable 18 is fixedly installed with a boss 19. The surface of the boss 19 is movably engaged in the movable groove 10. After the stepping motor in the motor box 17 is started, its output end drives the turntable 18 at the top to perform uniform circular motion, and the boss 19 at the end of the upper surface of the turntable 18 moves synchronously with the turntable 18. Since the boss 19 is movably engaged in the movable groove 10 opened by the protruding block 9 of the pushing plate 11, when the boss 19 performs circular motion, it will generate a thrust along the direction of the groove body in the movable groove 10, so that the movable frame 8 will slide back and forth linearly on the surface of the square tube 3.

[0021] A second filter plate 25 is movably provided inside the square tube 3 and near one end of the water pumping pipe. A polished rod 22 is fixedly installed on the surface of the second filter plate 25 away from the water pumping pipe. The other end of the polished rod 22 movably penetrates the square tube 3. A rectangular plate 23 is fixedly provided on the surface of the polished rod 22. A second spring 24 is connected between the rectangular plate 23 and the inner wall of the square tube 3. An arc convex block 20 is fixedly provided on the end of the turntable 18. An L-shaped rod 21 is fixedly installed on the end of the polished rod 22 outside the square tube 3. The end portion corresponds to the arc convex block 20. When the water flows into the interior of the square tube 3 from the water inlet trough 6, it will first pass through the first filter plate 7 to intercept larger debris, while some fine debris (such as mud and sand) may enter the interior of the square tube 3 through the gap of the first filter plate 7. At this time, the second filter plate 25 inside the square tube 3 near one end of the water pump will intercept these fine debris for a second time, further purifying the water flow and preventing it from entering the water pump 1 and causing blockage or wear of the pump body. When the turntable 18 rotates, its end The arc convex block 20 at the top moves synchronously with the turntable 18 in a circular motion, periodically approaching or moving away from the L-shaped rod 21 at the outer end of the polished rod 22. When the arc convex block 20 rotates to contact the end of the L-shaped rod 21, it pushes the L-shaped rod 21 to move away from the square tube 3. The L-shaped rod 21 is fixedly connected to the polished rod 22, so the polished rod 22 moves synchronously with it, thereby driving the second filter plate 25 inside the square tube 3 to slide synchronously, and at the same time compressing the second spring 24 between the rectangular plate 23 and the inner wall of the square tube 3. When the arc protrusion 20 rotates with the turntable 18 and leaves the L-shaped rod 21, the elastic potential energy of the second spring 24 is released, pushing the rectangular plate 23 to reset, and the light rod 22 and the L-shaped rod 21 move in the opposite direction, and the second filter plate 25 also returns to the initial position synchronously. As the turntable 18 continues to rotate, the second filter plate 25 forms a periodic reciprocating sliding inside the square tube 3, which can actively shake off attached mud and sand clumps and other small debris, greatly reducing the probability of clogging of the second filter plate 25 and ensuring the long-term effectiveness of secondary filtration.

[0022] The stepper motor is sealed inside the motor box 17. As the core power source of the drive component, the stepper motor is sealed inside the motor box 17 to form an independent sealed space. This design ensures that the stepper motor will not directly contact river water, silt or water vapor in the humid and watery environment of river flood control. Its circuit system and mechanical components can operate in a dry and clean state, and stably drive the turntable 18 to rotate through the output end.

[0023] The inner wall of the water inlet trough 6 is set to be arc-shaped, and the arc is matched with the moving trajectory of the first filter plate 7. The arc of the inner wall of the water inlet trough 6 is completely in line with this flipping trajectory. When the first filter plate 7 flips, its edge always maintains a uniform sliding contact with the arc-shaped inner wall, avoiding the first filter plate 7 from being unable to move smoothly due to rigid friction or jamming with the inner wall.

[0024] The buoyancy assembly includes a support plate 26, which is fixed to the top of the square tube 3 by bolts. A storage tube 27 is provided above the support plate 26, and an inflatable float 28 is provided above the storage tube 27. The bottom of the inflatable float 28 is connected to the bottom end of the storage tube 27 through a harness, and a connecting rope is provided on the top of the inflatable float 28. In the buoyancy assembly, the support plate 26 is fixed to the top of the square tube 3 to provide an installation foundation for the entire assembly. The storage tube 27 is located above the support plate 26, and the inflatable float 28 is not When inflated, it is folded and stored inside the storage tube 27. Its bottom is connected to the bottom of the storage tube 27 through a wiring harness (to prevent the float from detaching). The connecting rope on the top can be used for fixing or pulling. During work, the inflatable float 28 is taken out of the storage tube 27 and inflated. The volume of the inflatable float 28 expands after inflation, and the buoyancy of water is used to generate an upward lifting force, which acts on the square tube 3 and the entire pumping assembly 2 through the support plate 26 to prevent the pumping assembly 2 from sinking to the bottom and reduce the blockage of the pumping assembly 2 by the mud on the bottom of the water.

[0025] The end of the square tube 3 away from the water pump is detachable and fixed by bolts. During normal drainage operation, the detachable end of the square tube 3 is tightly fixed to the main body by bolts to form a complete closed channel structure. When maintenance is required inside the device (such as cleaning up small debris such as mud and sand accumulated in the square tube 3), the fixing bolts are unscrewed to separate the detachable end from the main body, exposing the channel and related components inside the square tube 3, making it easier to clean small debris such as mud and sand inside the square tube 3.

[0026] Working principle: First, take out the inflatable float 28 from the storage tube 27, inflate the inflatable float 28, and expand the volume of the inflated inflatable float 28. Then put the pumping assembly 2 into the river. Using the buoyancy of water, the inflatable float 28 can act on the square tube 3 and the entire pumping assembly 2 through the support plate 26, so that the pumping assembly 2 floats in the river to prevent the pumping assembly 2 from sinking to the bottom. After starting the water pump 1, the pumping pipe generates negative pressure, and the water in the river enters the pumping pipe through the pumping assembly 2. In the pumping assembly 2, the square tube 3 is connected to the pumping pipe, and the four end faces of the two square frames 5 on its surface are provided with water inlet grooves 6. Water flows into the interior of the square tube 3 from the water inlet grooves 6 in multiple directions, and finally passes through The water pipe is discharged by the water pump 1 to achieve flood control and drainage. The first filter plate 7 inside the water inlet trough 6 filters the inflowing water, intercepts the debris in the water, and prevents it from entering the water pipe or the water pump 1 and causing blockage. Under the action of the water flow, the first filter plate 7 is washed into an inclined shape. At this time, the first filter plate 7 can effectively intercept the debris and prevent it from entering the water pipe or the water pump 1 and causing blockage. Then, the stepper motor in the motor box 17 is powered on and started, and the output end drives the top turntable 18 to do uniform circular motion. The boss 19 on the end of the upper surface of the turntable 18 moves synchronously with it. Because the boss 19 is movably engaged in the movable groove 10 opened by the protruding block 9 of the push plate 11, the boss 19 makes a circular motion. During the circular motion, a thrust is generated in the movable groove 10 along the direction of the groove body, causing the movable frame 8 to slide back and forth linearly on the surface of the square tube 3. When the movable frame 8 slides, the pushing column 12 on its end face moves synchronously. Since the main column 13, the plug-in column 15 and the pushing head 16 move through the square frame 5, and the plug-in column 15 is below the first filter plate 7, the movement of the pushing column 12 directly acts on the first filter plate 7. When the pushing column 12 slides in a certain direction, the plug-in column 15 contacts the bottom of the first filter plate 7 and pushes upward. When the first filter plate 7 rotates to be in the same plane as the opening of the water inlet groove 6, the pushing plate 11 pushes the debris on the surface of the first filter plate 7 to keep the debris away from the water inlet area. After the water flows into the square tube 3, the first filter plate 7 intercepts larger debris, and some fine debris passes through the gap of the first filter plate 7 and enters the interior of the square tube 3. The second filter plate 25 inside the square tube 3 near one end of the water pump intercepts it for a second time, further purifying the water flow. When the turntable 18 rotates, the arc-shaped protrusion 20 at its end moves synchronously with the turntable 18 in a circular motion, periodically approaching or moving away from the L-shaped rod 21 at the outer end of the polished rod 22. When the arc-shaped protrusion 20 contacts the L-shaped rod 21, it pushes the L-shaped rod 21 to move away from the square tube 3. The polished rod 22 moves synchronously, driving the second filter plate 25 to slide, and at the same time compressing the second spring 24 between the rectangular plate 23 and the inner wall of the square tube 3;When the arc-shaped projection 20 leaves the L-shaped rod 21, the elastic potential energy of the second spring 24 is released, pushing the rectangular plate 23 back to its original position. The polished rod 22, the L-shaped rod 21, and the second filter plate 25 are also reset. As the turntable 18 continues to rotate, the second filter plate 25 forms a periodic reciprocating sliding motion inside the square tube 3, actively shaking off attached small debris and reducing the probability of clogging.

[0027] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A river flood prevention and emergency drainage device, comprising a water pump (1), characterized in that: The end of the water pump (1) is provided with a water pumping assembly (2), the water pumping assembly (2) comprises a square tube (3), the square tube (3) is connected to the end of the water pumping pipe, two square frames (5) are symmetrically mounted on the surface of the square tube (3), the four end faces of the square frame (5) are provided with a water inlet groove (6), the water inlet groove (6) passes through the square tube (3), a first filter plate (7) is mounted inside the water inlet groove (6) via a rotating shaft, a movable frame (8) is movably mounted on the surface of the square tube (3), the The movable frame (8) is movably installed between the two square frames (5). A push plate (11) is fixedly installed on the surface of the movable frame (8). The push plate (11) corresponds to the opening of the water inlet trough (6). Support frames (4) are installed at both ends of the bottom of the square tube (3). A driving component is provided between the two support frames (4) and directly below the square tube (3). The driving component can drive the movable frame (8) to slide back and forth on the surface of the square tube (3). A buoyancy component is provided above the pumping component (2).

2. The river flood prevention and rescue emergency drainage device according to claim 1, characterized in that: A push column (12) is installed on the end surface of the movable frame (8), and the push column (12) includes a main column (13), one end of the main column (13) is fixedly connected to the movable frame (8), and the other end of the main column (13) is provided with a plug-in slot, and a first spring (14) is provided inside the plug-in slot, and the end of the first spring (14) is connected to a plug-in column (15), and the plug-in column (15) is movably installed in the plug-in slot through the first spring (14), and a push head (16) is fixedly installed on the other end of the plug-in column (15), and the main column (13), the plug-in column (15) and the push head (16) all movably pass through the square frame (5), and the plug-in column (15) is located below the first filter plate (7).

3. The river flood prevention and emergency drainage device according to claim 1, characterized in that: A protruding block (9) is installed on the middle end surface of the pushing plate (11) close to the driving assembly, and a movable groove (10) is opened on the surface of the protruding block (9). The driving assembly includes a motor box (17), and the motor box (17) is fixed to the middle end of the support frame (4) by bolts. A stepper motor is arranged inside the motor box (17), and a turntable (18) is arranged on the top of the motor box (17). The output end of the stepper motor is fixedly connected to the turntable (18), and a boss (19) is fixedly installed on the end of the upper surface of the turntable (18), and the surface of the boss (19) is movably engaged in the movable groove (10).

4. The river flood prevention and rescue emergency drainage device according to claim 3, characterized in that: A second filter plate (25) is movably provided inside the square tube (3) and close to one end of the water pumping pipe. A light rod (22) is fixedly installed on the surface of the second filter plate (25) away from the water pumping pipe. The other end of the light rod (22) movably passes through the square tube (3). A rectangular plate (23) is fixedly provided on the surface of the light rod (22). A second spring (24) is connected between the rectangular plate (23) and the inner wall of the square tube (3).

5. The river flood prevention and emergency drainage device according to claim 4, characterized in that: A circular arc convex block (20) is fixedly provided at the end of the turntable (18), and an L-shaped rod (21) is fixedly installed at one end of the polished rod (22) outside the square tube (3), with the end of the L-shaped rod (21) corresponding to the circular arc convex block (20).

6. The river flood prevention and emergency drainage device according to claim 3, characterized in that: The stepper motor is sealed and arranged inside the motor box (17).

7. The river flood prevention and emergency drainage device according to claim 1, characterized in that: The inner wall of the water inlet trough (6) is configured to be arc-shaped, and the arc matches the moving track of the first filter plate (7).

8. The river flood prevention and emergency drainage device according to claim 1, characterized in that: The buoyancy assembly includes a support plate (26), which is fixedly mounted on the top of the square tube (3) by means of bolts, a storage tube (27) is provided above the support plate (26), an inflatable float (28) is provided above the storage tube (27), the bottom of the inflatable float (28) is connected to the bottom end of the inside of the storage tube (27) by means of a wiring harness, and a connecting rope is provided at the top of the inflatable float (28).

9. The river flood prevention and emergency drainage device according to claim 4, characterized in that: The end of the square tube (3) away from the water pump is detachable and fixed by bolts.

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