Foreign matter blocking prevention urban underground drainage pump

Abstract

This invention discloses an urban underground drainage pump designed to prevent blockage by foreign objects, relating to the field of drainage pump and sewage discharge technology. It includes a base plate and a pipe body. A motor is bolted to one side of the top of the base plate, and the pipe body is installed at the motor's output end. An inlet is located on one side of the pipe body, and a fixing column is evenly fixed to the side of the inlet by spot welding. A vibration mechanism is fixed to one end of the fixing column by spot welding. The invention utilizes the motor's rotation to drive the impeller within the pipe body, causing the water containing foreign objects to flow from the inlet into a baffle. A sealing arc plate connected to one side of the baffle slides against the inner wall of the pipe body, opening the previously sealed inlet. The abutment pushes out the foreign objects blocking the inlet, and the water flow then flushes the foreign objects from the baffle into a discharge trough connected to the side of the inlet, preventing the foreign objects from contacting the impeller and causing damage.

Description

Technical Field

[0001] This invention relates to the field of drainage pump technology, specifically to an urban underground drainage pump designed to prevent blockage by foreign objects. Background Technology

[0002] A drainage pump is a type of centrifugal pump. The working principle of a centrifugal pump is as follows: relying on a high-speed rotating impeller, the liquid gains energy under the action of inertial centrifugal force to increase its pressure. Before the pump starts working, the pump body and the inlet pipe must be filled with water to prevent cavitation. When the impeller rotates rapidly, the blades cause the water to rotate quickly. The rotating water flies out of the impeller under the action of centrifugal force. After the water in the pump is thrown out, a vacuum area is formed in the center of the impeller. The water from the water source is forced into the inlet pipe through the pipe network under the action of atmospheric pressure (or water pressure). This cycle continues, and continuous pumping can be achieved.

[0003] However, due to the different working environment of water pumps, some urban drainage pumps are more prone to damage. The main reason is that the underground liquid in the city carries more impurities and foreign objects, which can easily cause the fan blades in the water pump to become clogged, and at the same time cause the fan blades to not run smoothly and the motor to burn out.

[0004] Foreign objects frequently encountered in underground drainage pumps can be categorized into plastic bag debris, filamentous objects such as aquatic plants, and metal debris.

[0005] 1. Soft foreign objects such as plastic bags are the most likely to clog drain pumps and are also among the most common foreign objects floating in water. Usually, a rotating blade is installed at the front end of the drain pump to break up the whole plastic that enters the pump and then discharge it. However, this method will cause the broken plastic to get tangled on the impeller shaft. At the same time, the broken plastic being transported to other places by the drain pump will also cause environmental pollution problems.

[0006] 2. Some fine filamentous foreign objects such as aquatic plants and hair can easily obstruct the rotation of the impeller. After the drainage pump has been working for a long time, the impeller speed will be greatly reduced due to the entanglement of the fine filaments. For such foreign objects, some drainage pumps simply drain the water directly without any treatment.

[0007] 3. For metal waste, interception measures should be taken at the water pump inlet to prevent metal from damaging the pump impeller.

[0008] Therefore, we propose an urban underground drainage pump designed to prevent blockage by foreign objects. Summary of the Invention

[0009] The purpose of this invention is to provide an urban underground drainage pump that prevents blockage by foreign objects, thereby solving the problems mentioned in the background art.

[0010] 1. The motor drives the impeller inside the pipe to rotate, causing the water containing foreign objects to enter the baffle from the inlet. This blocks part of the liquid passage on the baffle, opening the originally sealed liquid passage. When the sealing arc plate slides on the inner wall of the pipe, the pusher pushes out the foreign objects blocking the liquid passage. Driven by the water flow, the foreign objects on the baffle are flushed into the drain tank connected to one side of the liquid passage, avoiding the problem of foreign objects coming into contact with the impeller under the action of the water flow.

[0011] 2. The baffle plate installed in the pipe body intercepts the filamentous foreign objects in the water flow, so that the entire filamentous foreign object is hung on the clamping column. The entire connecting plate vibrates left and right continuously under the drive of the hexagonal rotating column, so that the entire blade vibrates left and right in the through groove to cut the filamentous foreign object hanging on the clamping column, thus avoiding the problem of the entire filamentous foreign object getting tangled on the impeller.

[0012] 3. By installing a sludge collection tank on the entire pipe body, some of the foreign objects pumped in by the drainage pump, such as floating foreign objects like plastic bags, are placed in the sludge discharge tank for storage, thus avoiding the problem of the entire plastic waste being discharged into other places by the drainage pump and causing secondary pollution of the environment.

[0013] To achieve the above objectives, the present invention provides the following technical solution:

[0014] A city underground drainage pump for preventing foreign object blockage includes a base plate and a pipe body. A motor is fixed to one side of the top of the base plate by bolts, and the pipe body is installed at the output end of the motor. An inlet is opened on one side of the pipe body, and a fixing column is evenly fixed to the side of the inlet by spot welding. A vibration mechanism is fixed to one end of the fixing column by spot welding.

[0015] The vibration mechanism includes a housing, a sliding plate, a connecting cover, a spring, and a connecting shaft. One end of the fixed column is fixed to the housing by spot welding, and the sliding plate is slidably connected to the inner wall of the housing. One side of the sliding plate is fixed to the connecting shaft by spot welding, and one end of the connecting shaft passes through one side of the housing and extends into the tube. The inner walls of both sides of the housing are evenly and symmetrically fixed with connecting covers by spot welding, and springs are fixed to the opposite sides of the two connecting covers by spot welding.

[0016] A drainage mechanism is installed at one end of the connecting shaft inside the pipe. The drainage mechanism includes a baffle, a liquid passage hole, a sealing arc plate, a sealing membrane, a support frame, and a stop post. A baffle is fixed to one end of the connecting shaft by spot welding, and a liquid passage hole is evenly opened on one side of the baffle. A sealing arc plate is fixed to one side of the baffle by spot welding, and a sealing membrane is fixed to one side of the sealing arc plate by adhesion. A support frame is fixed to the inner wall of the pipe by spot welding, and a stop post is evenly fixed to one side of the support frame by spot welding.

[0017] Furthermore, a liquid inlet is provided on one side of the top of the tube body, one side of the sealing arc plate is slidably connected to the inner wall of the tube body, and the sealing arc plate abuts against the liquid inlet, and the abutment is correspondingly provided with the liquid inlet.

[0018] Furthermore, a sludge storage tank is fixed to the top of the pipe body by bolts, and a sludge discharge trough is provided inside the sludge storage tank. A partition is fixed to the inner wall of the bottom of the sludge storage tank in the sludge discharge trough by spot welding, and the liquid inlet is connected to the sludge discharge trough.

[0019] Furthermore, a baffle plate is fixed to the inner wall of the tube by spot welding, and through grooves are symmetrically and evenly opened on the baffle plate. The inner walls on both sides of the through groove are fixed with clamping posts by spot welding. Rubber plates are fixed to the baffle plate and on both sides of the through groove by adhesion. A top post is fixed to the center of the baffle plate by adhesion.

[0020] Furthermore, a cutting mechanism is installed on the inner wall of the tube. The cutting mechanism includes a fixed rod, a rotating shaft, a connecting plate, a blade, a hexagonal rotating column, and a swaying diaphragm. The fixed rod is fixed to the inner wall of the tube by spot welding, and a rotating shaft is movably connected to the fixed rod. One end of the rotating shaft is movably connected to the connecting plate through a bearing, and a blade is uniformly rotatably connected to one side of the connecting plate. The other end of the rotating shaft is movably connected to the hexagonal rotating column, and a swaying diaphragm is uniformly fixed to one side of the hexagonal rotating column by adhesion.

[0021] Furthermore, an outlet is provided on the other side of the pipe body, and a locking ring is fitted on the outer wall of the pipe body at the inlet. A connecting pipe is connected to one side of the sludge storage tank, and one end of the connecting pipe passes through the sludge storage tank and is connected to the sludge discharge trough.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, the motor drives the impeller inside the pipe to rotate, causing the water containing foreign objects to enter the baffle from the inlet. This blocks part of the liquid passage on the baffle and increases the resistance on the baffle. This causes the sealing arc plate connected to one side of the baffle to slide on the inner wall of the pipe, thus opening the originally sealed liquid passage. When the sealing arc plate slides on the inner wall of the pipe, the pusher pushes out the foreign objects blocking the liquid passage. Driven by the water flow, the foreign objects on the baffle are flushed into the drain trough connected to the side of the liquid passage, preventing the foreign objects from contacting the impeller under the action of the water flow and causing the impeller to be entangled and damaged. After the foreign objects on the baffle are discharged, the spring in the housing pushes the entire connecting shaft to move outward, so that the sealing arc plate can block the liquid passage again, preventing the liquid passage from opening and affecting the drainage of the entire drainage pump.

[0024] 2. In this invention, the baffle plate installed in the pipe body intercepts the filamentous foreign objects in the water flow, so that the entire filamentous foreign object is hung on the clamping post. At the same time, a blade is installed on one side of the entire through groove. The entire blade is fixed on the connecting plate. The entire connecting plate vibrates left and right continuously under the drive of the hexagonal rotating column, so that the entire blade vibrates left and right in the through groove to cut the filamentous foreign object hanging on the clamping post. This prevents the entire filamentous foreign object from getting tangled on the impeller. After the drainage pump has been working for a long time, the speed of the entire impeller will be greatly reduced.

[0025] 3. In this invention, a sludge storage tank installed on the entire pipe body is used to uniformly place some of the foreign objects pumped in by the drainage pump, such as floating foreign objects like plastic bags, into the sludge discharge tank for storage, thereby preventing the entire plastic waste from being discharged into other places by the drainage pump and causing secondary pollution of the foreign objects. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the urban underground drainage pump for preventing foreign object blockage according to the present invention;

[0027] Figure 2 This is a schematic diagram of the main cross-sectional structure of the urban underground drainage pump for preventing foreign object blockage according to the present invention.

[0028] Figure 3 This is an enlarged schematic diagram of the structure at point A of the present invention;

[0029] Figure 4 This is a schematic diagram of the connection structure between the connecting shaft and the sewage discharge mechanism of the present invention;

[0030] Figure 5 This is an enlarged schematic diagram of the structure at point B of the present invention;

[0031] Figure 6 This is a side view of the baffle structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the connection structure between the blade and the connecting disc of the present invention;

[0033] Figure 8 This is a schematic diagram of the connection structure between the hexagonal rotating column and the swaying membrane of the present invention.

[0034] In the diagram: 1. Base plate; 2. Motor; 3. Pipe body; 4. Liquid inlet; 5. Vibration mechanism; 501. Box body; 502. Slide plate; 503. Connecting cover; 504. Spring; 505. Connecting shaft; 6. Fixed column; 7. Locking ring; 8. Sewage discharge mechanism; 801. Baffle; 802. Liquid passage hole; 803. Sealing arc plate; 804. Sealing membrane; 805. Support frame; 806. Support column; 9. Sewage tank; 10. Sewage discharge trough; 11. Liquid inlet; 12. Connecting pipe; 13. Partition plate; 14. Baffle plate; 15. Through groove; 16. Locking column; 17. Rubber plate; 18. Top column; 19. Cutting mechanism; 191. Fixed rod; 192. Rotating shaft; 193. Connecting plate; 194. Blade; 195. Hexagonal rotating column; 196. Shaking membrane; 20. Liquid outlet. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-8 The present invention provides a technical solution:

[0037] Example 1:

[0038] During operation, the impeller of the city's underground drainage pumps can become stuck and unable to rotate due to plastic waste and filamentous objects clogging the drainage pipes. Some existing drainage pumps have an interception mechanism installed at the inlet to prevent foreign objects from entering the drainage pump body 3. However, this greatly reduces the water flow into the body 3 because the water source at the inlet is blocked by foreign objects. Another method is to use rotating blades 194 to crush foreign objects, but some residues still get caught on the impeller shaft 192. This can damage the pump body after the drainage pump has been working for a long time. Therefore, this invention adopts a method of collecting larger foreign objects and intercepting and crushing filamentous foreign objects. This method not only protects the drainage pump but also recycles some of the larger plastic waste, preventing the drainage pump from discharging some plastic waste into other areas and causing secondary environmental pollution.

[0039] In specific operations, as follows: Figure 1-2 As shown, the entire pump body is fixed to the ground by the base plate 1. At the same time, the liquid inlet 4 of the entire pump body needs to be connected to an external pipe. The entire pipe is sleeved on the front end of the pipe body 3. At the same time, a locking ring 7 is installed on the front end of the entire pipe body 3. The operator can fix the external pipe to the pipe body 3 by rotating the bolt on the locking ring 7.

[0040] The front end of the entire pipe body 3 is also equipped with a vibration mechanism 5. When the motor 2 starts to drive the impeller in the pipe body 3 to rotate, the water flows into the pipe body 3 through the external pipe. The fixed column 6 installed at the front end of the pipe body 3 plays a role in interception, preventing some hard materials from entering the pipe body 3 and causing damage to the impeller of the entire drainage pump.

[0041] When part of the plastic bag in the water enters the pipe body 3, due to the sliding connection shaft 505 in the entire housing 501, and the baffle 801 installed on the entire connecting shaft 505, the entire plastic bag falls to one side of the baffle 801, instead of directly entering the other side of the pipe body 3. This also prevents the baffle 801 from intercepting the water flow. Multiple liquid passage holes 802 are opened on one side of the baffle 801 to facilitate the flow of water in the pipe body 3. The entire baffle 801... Figure 4 As shown, the entire baffle plate is divided into sloping surfaces. When plastic waste falls onto the plate, the plastic bag will flow with the water to the flat top of the baffle plate 801. After the drain pump has been working for a long time, a large amount of plastic waste will accumulate on the baffle plate 801, causing poor water flow. Simultaneously, the baffle plate 801 will begin to move to the right due to the obstruction of the plastic bag. A sealing arc plate 803 is installed at the top of the baffle plate 801. The sealing arc plate 803 blocks the liquid inlet 11 at the top of the pipe body 3, preventing water from flowing into the sludge tank 9 and reducing the water pressure in the pipe body 3. When the baffle plate 801 intercepts a sufficient amount of plastic waste... After the debris is removed, as the entire baffle 801 moves to the right, the sealing arc plate 803 that originally blocked the liquid inlet 11 slowly opens. At the same time, a support frame 805 is installed in the entire pipe body 3, and a stop post 806 is installed on the entire support frame 805. The stop post 806 installed on the entire support frame 805 is set one-to-one with the liquid inlet 11 opened on the baffle 801. When the entire baffle 801 moves to the right, the stop post 806 on the entire support frame 805 pushes out the plastic debris that was originally blocking the liquid inlet 802. Since the liquid inlet 11 at the top of the entire pipe body 3 is in the open state, the plastic debris accumulated in the entire baffle 801 flows with the water and enters the sludge tank 9 through the liquid inlet 11.

[0042] The entire sludge storage tank 9 is equipped with a sludge discharge trough 10, and a baffle 13 is installed in the sludge discharge trough 10. When plastic waste enters the sludge discharge trough 10 with the water flow, it will fall to the left side of the baffle 13 for storage. The baffle 13 is installed to prevent plastic waste from flowing back to the liquid inlet 11 and obstructing the entry of other plastic waste. When one side of the entire sludge discharge trough 10 is full of plastic waste, a connecting pipe 12 is connected to one side of the entire sludge storage tank 9. The connecting pipe 12 has a large diameter, which can discharge the plastic waste in the entire sludge discharge trough 10 into the special plastic waste storage box 501, so as to avoid the drainage pump discharging the plastic waste and causing secondary pollution of plastic waste.

[0043] After the plastic waste on the entire baffle 801 is discharged, the liquid passage hole 802 on the entire baffle 801 is in an open state. At the same time, the thrust of the water flow on the entire baffle 801 is reduced. Since the connecting shaft 505 on one side of the entire baffle 801 is connected to the slide plate 502 in the box 501, and the slide plate 502 and the inner wall of the box 501 are evenly provided with connecting covers 503, and springs 504 are installed in the connecting covers 503, when there is a lot of plastic waste on the baffle 801, the baffle 801 continuously pulls the slide plate 502 in the box 501 through the connecting shaft 505. Since multiple sets of springs 504 are installed on the slide plate 502 and the inner wall of the box 501, after the plastic waste on the baffle 801 is discharged, the thrust of the entire baffle 801 is reduced. As the force decreases, the spring 504 pulls the right-moving baffle 801 back, causing the sealing arc plate 803 on the entire baffle 801 to seal the liquid inlet 11 again. A sealing film 804 is attached to the entire sealing arc plate 803, which improves the sealing effect of the sealing arc plate 803 on the liquid inlet 11, preventing leakage from the liquid inlet 11 and causing a drop in water pressure in the entire pipe body 3. After a large amount of plastic waste accumulates on the entire baffle 801 again, the entire liquid inlet 11 is opened, and the plastic is discharged into the sewage tank 10 again. The above operation is repeated continuously, so that the amount of plastic waste in the water discharged by the entire drainage pump is minimized. This allows the urban underground drainage pump to intercept and collect plastic bags in the water while draining, protecting the drainage pump body and the environment at the same time.

[0044] Example 2:

[0045] Because the water flow still contains fine, thread-like debris, this type of debris can easily become entangled on the impeller's rotating shaft, such as... Figure 5-8 As shown, some fine filamentous foreign objects enter the pipe body 3 near the impeller through the liquid passage 802 on the sewage discharge mechanism 8, and fall onto the baffle plate 14 with the water flow. The shape of the entire baffle plate 14 is as follows: Figure 6 As shown, multiple sets of through slots 15 are opened on the entire baffle plate 14, and multiple sets of clamping posts 16 are installed on the entire through slot 15. The installation of the clamping posts 16 is to intercept the filamentous foreign objects in the water flow. At the same time, a top post 18 is installed at the center of the baffle plate 14. The top post 18 is similar to a cone. The installation of the top post 18 disperses the filaments in the water to the surrounding clamping posts 16.

[0046] A cutting mechanism 19 is installed in the tube 3 on one side of the baffle plate 14. The cutting mechanism 19 is responsible for cutting the filaments hanging on the clamping post 16 to prevent the filaments from getting tangled on the impeller. The cutting mechanism 19 is divided into two parts: one part is responsible for cutting the filaments, and the other part provides power for the rotation of the blade 194. A fixing rod 191 is installed on one side of the baffle plate 14. A connecting plate 193 is installed at the front end of the fixing rod 191. The shape of the connecting plate 193 is as follows: Figure 7 As shown, the entire connecting plate 193 is equipped with a blade 194 corresponding to the through groove 15, which also prevents the blade 194 from being damaged by continuous vibration in the through groove 15. A rubber plate 17 is installed on the entire through groove 15. The rubber plate 17 has low hardness and plays a role in protecting the blade 194. The blade 194 is rotatably connected to the connecting plate 193, but the rotation range of the blade 194 on the connecting plate 193 is small. The rotation setting of the blade 194 ensures that the fine wires in the entire through groove 15 can be cut.

[0047] A hexagonal swivel post 195 is installed on the other side of the entire fixed rod 191, and the entire hexagonal swivel post 195 is as follows: Figure 8 As shown, a swaying membrane 196 is evenly installed on one side of the hexagonal rotating column 195. When the entire swaying membrane 196 flows in the water, it sways continuously, thereby driving the entire hexagonal rotating column 195 to sway. The entire hexagonal rotating column 195 is connected to the connecting plate 193 through the rotating shaft 192, so the entire connecting plate 193 will also sway continuously with the swaying of the hexagonal rotating column 195, thereby continuously providing power for the blade 194 to cut the fine wire. After the blade 194 cuts the fine wire on the clamping column 16, the cut fine wire is discharged from the outlet 20 by the impeller along the water flow, completing the drainage work of the entire drainage pump, and also preventing foreign objects from clogging the water pump.

[0048] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A type of urban underground drainage pump designed to prevent blockage by foreign objects, comprising a base plate (1) and a pipe body (3), characterized in that: A motor (2) is fixed to one side of the top of the base plate (1) by bolts, and a pipe (3) is installed at the output end of the motor (2). An inlet (4) is opened on one side of the pipe (3), and a fixing column (6) is evenly fixed on one side of the inlet (4) by spot welding. A vibration mechanism (5) is fixed at one end of the fixing column (6) by spot welding. The vibration mechanism (5) includes a housing (501), a sliding plate (502), a connecting cover (503), a spring (504), and a connecting shaft (505). One end of the fixed column (6) is fixed to the housing (501) by spot welding, and the sliding plate (502) is slidably connected to the inner wall of the housing (501). The connecting shaft (505) is fixed to one side of the sliding plate (502) by spot welding, and one end of the connecting shaft (505) passes through one side of the housing (501) and extends into the tube (3). The connecting covers (503) are evenly provided on the inner walls of the sliding plate (502) and the housing (501), and the spring (504) is fixed to the opposite side of the two connecting covers (503) by spot welding. The connecting shaft (505) is equipped with a sewage discharge mechanism (8) at one end inside the pipe body (3). The sewage discharge mechanism (8) includes a baffle (801), a liquid passage hole (802), a sealing arc plate (803), a sealing membrane (804), a support frame (805), and a stop column (806). The baffle (801) is fixed to one end of the connecting shaft (505) by spot welding, and a liquid passage hole (802) is evenly opened on one side of the baffle (801). A sealing arc plate (803) is fixed to one side of the baffle (801) by spot welding, and a sealing membrane (804) is fixed to one side of the sealing arc plate (803) by adhesion. A support frame (805) is fixed to the inner wall of the pipe body (3) by spot welding, and a stop column (806) is evenly fixed to one side of the support frame (805) by spot welding. A liquid inlet (11) is provided on one side of the top of the tube body (3), and one side of the sealing arc plate (803) is slidably connected to the inner wall of the tube body (3), and the sealing arc plate (803) abuts against the liquid inlet (11), and the abutment (806) is correspondingly provided with the liquid inlet (802). The top of the pipe body (3) is fixed with a sludge storage box (9) by bolts, and a sludge discharge trough (10) is provided inside the sludge storage box (9). A partition plate (13) is fixed to the inner wall of the bottom of the sludge storage box (9) inside the sludge discharge trough (10) by spot welding. The liquid inlet (11) is connected to the sludge discharge trough (10).

2. The urban underground drainage pump for preventing foreign object blockage according to claim 1, characterized in that: The inner wall of the tube (3) is fixed with a baffle plate (14) by spot welding, and a through groove (15) is symmetrically and evenly opened on the baffle plate (14). The inner walls on both sides of the through groove (15) are fixed with a locking post (16) by spot welding. A rubber plate (17) is fixed on the baffle plate (14) and on both sides of the through groove (15) by adhesive bonding. A top post (18) is fixed at the center of the baffle plate (14) by adhesive bonding.

3. The urban underground drainage pump for preventing foreign object blockage according to claim 2, characterized in that: The inner wall of the tube (3) is equipped with a cutting mechanism (19). The cutting mechanism (19) includes a fixed rod (191), a rotating shaft (192), a connecting plate (193), a blade (194), a hexagonal rotating column (195), and a swaying membrane (196). The inner wall of the tube (3) is fixed with the fixed rod (191) by spot welding, and the rotating shaft (192) is movably connected to the fixed rod (191). One end of the rotating shaft (192) is movably connected to the connecting plate (193) through a bearing, and the blade (194) is uniformly rotatably connected to one side of the connecting plate (193). The other end of the rotating shaft (192) is movably connected to the hexagonal rotating column (195), and the swaying membrane (196) is uniformly fixed to one side of the hexagonal rotating column (195) by adhesion.

4. The urban underground drainage pump for preventing foreign object blockage according to claim 1, characterized in that: The other side of the pipe body (3) is provided with an outlet (20), and a locking ring (7) is provided on the outer wall of the pipe body (3) at the inlet (4). One side of the sludge storage tank (9) is connected to a connecting pipe (12), and one end of the connecting pipe (12) passes through the sludge storage tank (9) and is connected to the sludge discharge trough (10).

Images