Anti-clogging device for a sewage pump

Abstract

The utility model discloses a kind of anti-clogging devices of sewage pump, it is related to sewage pump technical field, device includes pump body, outlet pipe, hollow block, water inlet pipe and dredging structure;Outlet pipe is connected with the input end of pump body and hollow block, its inlet end is equipped with filter plate, hollow block bottom surface is equipped with dredging port, internal dredging structure contains air cylinder, scraper, water pressure sensor, guide rod, trapezoidal block, first sealing plate and second sealing plate;When working, sewage enters hollow block through water inlet pipe, filter plate intercepts large impurities, and water pressure sensor monitors water pressure in real time;When filter plate is blocked and water pressure rises, pump body stops, air cylinder drives scraper to remove impurities, trapezoidal block and first sealing plate cooperate to open dredging port and remove impurities;After impurities are discharged, component resets, pump body restarts, achieve anti-clogging thoroughly, automatic response, reliable sealing and convenient maintenance, guarantee sewage pump long-term stable operation.

Description

Technical Field

[0001] This utility model relates to the field of sewage pump technology, specifically to a sewage pump anti-clogging device. Background Technology

[0002] A sewage pump is a type of pump where the pump and motor are integrated and simultaneously submerged in liquid. Compared to general horizontal or vertical sewage pumps, sewage pumps are more compact and occupy less space. Installation and maintenance are convenient; large sewage pumps are generally equipped with automatic coupling devices for automatic installation, making installation and maintenance quite convenient. They can operate continuously for long periods. Existing sewage pumps often use cutting devices to remove foreign objects from the sewage to prevent internal blockage, but over time, impurities will still accumulate inside, affecting the pump's operation. Furthermore, while some sewage pumps have added filtration structures to intercept impurities before they enter the pump body, existing filtration structures lack corresponding automatic cleaning mechanisms. When too much impurity accumulates on the filter screen, it can cause blockage of the filter pores, resulting in a sharp increase in sewage flow resistance. This not only affects sewage discharge efficiency but also requires manual periodic disassembly and cleaning of the filter screen. Especially in scenarios where sewage pumps are submerged in liquid or installed in confined spaces, manual cleaning operations are difficult and frequent, which not only increases operation and maintenance costs, but also interrupts the sewage treatment process due to downtime for cleaning, affecting overall operational efficiency.

[0003] In summary, existing anti-clogging technologies for sewage pumps still suffer from core problems such as incomplete impurity interception, easy accumulation of residual impurities, easy clogging of the filter structure, and inconvenient cleaning. These issues make it difficult to meet the actual needs of long-term stable and efficient operation of sewage pumps. Therefore, developing an anti-clogging device for sewage pumps that can effectively intercept impurities, automatically monitor clogging, and automatically clean filter components has become an urgent technical problem to be solved in the industry. Utility Model Content

[0004] The purpose of this invention is to provide a sewage pump anti-clogging device. Sewage enters a hollow block through the inlet pipe, where a filter plate at the outlet pipe inlet intercepts large impurities. A water pressure sensor monitors the water pressure inside the hollow block in real time. When the filter plate becomes clogged, causing the water pressure to rise, the pump stops, a cylinder drives a scraper to remove impurities, a second sealing plate seals the inlet and outlet pipe interfaces, and a trapezoidal block, in conjunction with the first sealing plate, opens the unblocking port to discharge impurities. After the impurities are discharged, the components reset and the pump restarts. This device solves the problem that existing sewage pumps, which rely on cutting devices, are still prone to clogging due to impurity sedimentation, and that the filter structure requires manual cleaning, which can affect operating efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sewage pump anti-clogging device includes a pump body, characterized in that the input end of the pump body is connected to the outlet end of a water outlet pipe, the inlet end of the water outlet pipe is fixedly connected to a hollow block, a filter plate is provided at the connection, and the other end of the hollow block is connected to an inlet pipe; the bottom surface of the hollow block is through to form a dredging opening, and a dredging structure is provided inside the hollow block. The unblocking structure includes a cylinder vertically fixed to the top surface of the hollow block. The piston rod of the cylinder passes through the hollow block, and a scraper is fixedly connected to the end of the piston rod. The scraper has the same cross-section as the hollow chamber inside the hollow block and is vertically slidably installed inside the hollow block. The scraper is in contact with the filter plate, and a water pressure sensor is fixedly installed at the center of the bottom surface of the scraper.

[0006] Two guide rods are symmetrically fixedly installed on the bottom surface of the scraper. A trapezoidal block is fixedly connected to the bottom surface of the guide rods. A first sealing plate is fixedly connected to the bottom surface of the trapezoidal block. When the cylinder piston rod is retracted, the top surface of the first sealing plate abuts against the bottom surface of the hollow block, and the trapezoidal block slides and engages in the unblocking opening to seal the unblocking opening.

[0007] A sealing ring is fixedly connected to the top surface of the first sealing plate, and the trapezoidal block is located inside the sealing ring.

[0008] The trapezoidal block has four sides that slope downwards.

[0009] The base area of ​​the trapezoidal block is equal to the cross-sectional area of ​​the dredging opening and is smaller than the cross-sectional area of ​​the first sealing plate, the cross-sectional area of ​​the first sealing plate being equal to the base area of ​​the hollow block.

[0010] Two second sealing plates are symmetrically fixed to the top surface of the scraper, with their oriented surfaces facing the direction of water flow and adhering to the inner wall of the hollow block; the second sealing plates slide through the top wall of the hollow block, and a limiting block is fixedly connected to the top surface of each of the two second sealing plates.

[0011] The anti-clogging device for the sewage pump achieves its anti-clogging function through a closed-loop process of filtration interception, water pressure monitoring, automatic cleaning, and seal restoration, relying on the coordinated operation of its core components. The specific mechanism is as follows: During the wastewater transport stage, wastewater enters the hollow block through the inlet pipe for temporary storage, and then flows towards the outlet pipe. At this point, the filter plate at the inlet of the outlet pipe intercepts large impurities in the wastewater, allowing only filtered clean water to enter the pump body through the outlet pipe. The pump body then completes the subsequent transport, initially preventing impurities from entering the pump body and causing internal blockages. Simultaneously, a water pressure sensor fixed to the center of the scraper's bottom surface monitors the water pressure inside the hollow block in real time, providing a signal for blockage detection.

[0012] When excessive impurities accumulate on the surface of the filter plate, causing blockage of the pores, the sewage inside the hollow block cannot flow normally to the outlet pipe. Instead, it stagnates inside the hollow block, causing the water pressure inside the chamber to rise continuously. When the water pressure sensor detects that the water pressure exceeds the set threshold, it triggers a linkage control: first, the pump stops running to avoid idling or overload; then, the cylinder on the top surface of the hollow block starts, and its piston rod extends downward, driving the scraper to slide vertically down inside the hollow block. Because the scraper has the same cross-section as the hollow chamber inside the hollow block and its end contacts the filter plate, the scraper directly scrapes away the impurities accumulated on the surface of the filter plate during the downward movement, thus cleaning the filter plate.

[0013] As the scraper slides down, the second sealing plate, which is symmetrically fixed on its top surface, slides down simultaneously. Because the second sealing plate penetrates the top wall of the hollow block and fits against the inner wall of the hollow block, it can seal the connection between the water inlet pipe and the hollow block, as well as the connection between the water outlet pipe and the hollow block, after sliding down, preventing sewage or impurities from flowing back from the water inlet and outlet pipes during the cleaning process. At the same time, the two guide rods on the bottom surface of the scraper drive the trapezoidal block and the first sealing plate to slide down simultaneously, causing the trapezoidal block, which was originally stuck in the unblocking opening, to disengage from the unblocking opening. The unblocking opening on the side wall of the hollow block then opens, and the impurities scraped off by the scraper are discharged from the hollow block through the unblocking opening under the action of gravity, completing the impurity cleaning.

[0014] After the impurities are discharged, the cylinder piston rod retracts, causing the scraper to rise and reset: the trapezoidal block slides back into the unblocking port to seal the unblocking port, the top surface of the first sealing plate abuts against the bottom surface of the hollow block and the sealing effect is further enhanced by the top sealing ring; the second sealing plate rises synchronously, releasing the seal on the inlet and outlet water pipe connection port; after all components are reset, the pump body restarts, and the device resumes normal operation of sewage transportation and filtration anti-clogging.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. More thorough anti-clogging, avoiding the hidden danger of impurity accumulation: Existing technology only breaks foreign objects by cutting devices, which cannot completely prevent the long-term sedimentation of small impurities. This utility model adopts dual protection of "filter plate interception + automatic cleaning". First, the filter plate at the inlet end of the water outlet directly intercepts large-volume impurities, preventing impurities from entering the pump body from the source. Then, relying on the scraper cleaning mechanism triggered by the water pressure sensor, the impurities accumulated on the surface of the filter plate are removed in time, preventing the filter plate holes from clogging. This completely solves the dual problems of "clogging inside the pump body" and "clogging of filter components", ensuring the long-term stable operation of the sewage pump.

[0016] 2. Intelligent automatic response, reducing manual intervention costs: Existing technologies require manual periodic inspection, disassembly and cleaning of sedimented impurities, which is not only inefficient but also prone to pump overload damage due to failure to detect blockages in time. This utility model monitors the water pressure inside the hollow block in real time through a water pressure sensor. When the filter plate is blocked and the water pressure rises, it can automatically trigger a closed-loop process of pump shutdown and cylinder-driven cleaning, eliminating the need for manual judgment and operation. This avoids the tediousness of manual inspection, can quickly respond to blockage problems, reduce the risk of pump failure caused by blockage, and lower labor maintenance costs.

[0017] 3. Reliable sealing during the cleaning process, with no sewage leakage or backflow: Existing technologies often suffer from sewage leakage and environmental pollution due to a lack of sealing design when cleaning impurities, or sewage backflow from the inlet and outlet pipes. In the cleaning stage, this utility model simultaneously seals the connection between the inlet pipe and the hollow block, and the outlet pipe and the hollow block through the second sealing plate, preventing sewage backflow or leakage. At the same time, relying on the cooperation of the first sealing plate and the trapezoidal block, the sealing of the dredging port is ensured in the non-cleaning state. During cleaning, impurities are discharged directionally only through the dredging port, which not only ensures the cleaning effect but also avoids pollution to the surrounding environment, improving the environmental friendliness and safety of the device.

[0018] 4. Strong structural coordination and high maintenance convenience: Existing cutting devices have complex structures and are difficult to disassemble and repair. The core components of this utility model are all modularly designed with simple connections. If vulnerable parts need to be replaced in the future, there is no need to disassemble the device extensively. In addition, the automatic cleaning mechanism reduces the frequency of manual disassembly and cleaning, further reducing the maintenance difficulty and operating cost of the device. Attached Figure Description

[0019] Figure 1 This is a perspective view of the overall structure of an anti-clogging device for a sewage pump proposed in this utility model; Figure 2 This is a main sectional view of the hollow block integral structure of the anti-clogging device for a sewage pump proposed in this utility model; Figure 3 This utility model proposes an anti-clogging device for a sewage pump. Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 A perspective view of the overall structure of the unblocking component of the anti-clogging device for a sewage pump proposed in this utility model; In the diagram, 1. Pump body; 2. Outlet pipe; 3. First sealing plate; 4. Hollow block; 5. Inlet pipe; 6. Second sealing plate; 7. Limiting block; 8. Cylinder; 9. Filter plate; 10. Guide rod; 11. Trapezoidal block; 12. Unblocking port; 13. Water pressure sensor; 14. Scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1 to 4 This utility model provides a sewage pump anti-clogging device, comprising a pump body 1, an outlet pipe 2 connected to the input end of the pump body 1, a hollow block 4 fixedly connected to the end of the outlet pipe 2, a slidable unblocking component slidably connected inside the hollow block 4, a water pressure sensor 13 vertically fixed to the unblocking component, a filter plate 9 fixedly connected to the inlet end of the outlet pipe 2, and an inlet pipe 5 fixedly connected to the outer side of the hollow block 4; the unblocking component includes a cylinder 8 vertically fixed to the top surface of the hollow block 4, the piston rod end of the cylinder 8 slidingly penetrating the top surface of the hollow block 4, a scraper 14 fixedly connected to the end of the piston rod of the cylinder 8, the scraper 14 vertically slidably connected inside the hollow block 4, a water pressure sensor 13 vertically fixed to the center of the bottom surface of the scraper 14, and the end of the scraper 14 contacting the filter plate 9; two guide rods 10 are symmetrically fixed to the bottom surface of the scraper 14. The trapezoidal block 11 is fixedly connected at the end. The inner wall of the hollow block 4 passes through the unblocking opening 12. The trapezoidal block 11 is slidably connected inside the unblocking opening 12. The bottom surface of the trapezoidal block 11 is fixedly connected to the first sealing plate 3. The top surface of the first sealing plate 3 abuts against the bottom surface of the hollow block 4. The top surface of the scraper 14 is symmetrically fixed with two second sealing plates 6. The two second sealing plates 6 slide through the top wall of the hollow block 4. The top surfaces of the two second sealing plates 6 are respectively fixedly connected with a limiting block 7. The bottom area of ​​the trapezoidal block 11 is equal to the cross-sectional area of ​​the unblocking opening 12 and is smaller than the cross-sectional area of ​​the first sealing plate 3. The cross-sectional area of ​​the first sealing plate 3 is equal to the bottom area of ​​the hollow block 4. The four sides of the trapezoidal block 11 are all inclined surfaces sloping downwards. The top surface of the first sealing plate 3 is fixedly connected with a sealing ring. The trapezoidal block 11 is located inside the sealing ring.

[0022] By connecting a hollow block 4 to the input end of the pump body 1 via a water outlet pipe 2, a slidable unblocking component is vertically connected inside the hollow block 4, and a water pressure sensor 13 is vertically fixed inside the unblocking component. A filter plate 9 is fixed at the input end of the water outlet pipe 2. This system filters out large impurities entering the pump body 1, preventing impurities from clogging the pump body 1. It also facilitates automatic cleaning of impurities accumulated on the filter plate 9, preventing excessive accumulation of impurities on the outside of the filter plate 9, which could clog the holes in the filter plate 9 and thus prevent the pump body 1 from becoming clogged.

[0023] Working Principle: During operation, wastewater enters the hollow block 4 through the inlet pipe 5. The wastewater then passes through the filter plate 9 at the inlet end of the outlet pipe 2 before entering the pump body 1. Simultaneously, the water pressure sensor 13 monitors the water pressure inside the hollow block 4 in real time. When excessive impurities accumulate on the outside of the filter plate 9, causing it to become clogged, wastewater and impurities will accumulate inside the hollow block 4, preventing them from entering the pump body 1. This causes the water pressure inside the hollow block 4 to rise continuously. When the water pressure sensor 13 detects this increase in water pressure, the pump body 1 shuts down, the cylinder 8 starts, and the cylinder 8 drives the scraper 14 to descend. The scraper 14 then drives the second sealing plate 6 to descend, removing the impurities accumulated on the outside of the filter plate 9. The impurities are scraped downwards, while the two second sealing plates 6 seal the outlet of the inlet pipe 5 and the inlet of the outlet pipe 2. At the same time, the scraper 14 drives the trapezoidal block 11 to descend through the guide rod 10, and the trapezoidal block 11 drives the first sealing plate 3 to descend, so that the unblocking port 12 is connected to the outside. The scraper 14 scrapes the impurities scraped off the filter plate 9 and discharges them through the unblocking port 12 to the hollow block 4. Then the cylinder 8 drives the scraper 14 to rise, and the scraper 14 drives the trapezoidal block 11 and the first sealing plate 3 to rise, so that the first sealing plate 3 seals the unblocking port 12. At the same time, the two second sealing plates 6 rise synchronously, so that the hollow block 4 is connected to the pump body 1. Then the pump body 1 is restarted, thus realizing the anti-clogging function of the sewage pump.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewage pump anti-clogging device, comprising a pump body (1), characterized in that, The input end of the pump body (1) is connected to the outlet end of the water outlet pipe (2), and the inlet end of the water outlet pipe (2) is fixedly connected to the hollow block (4). A filter plate (9) is set at the connection point. The other end of the hollow block (4) is connected to the water inlet pipe (5). The bottom surface of the hollow block (4) is through to form a dredging port (12), and a dredging structure is set inside the hollow block (4). The unblocking structure includes a cylinder (8) that is vertically fixed to the top surface of the hollow block (4). The piston rod of the cylinder (8) extends into the hollow block (4). The end of the piston rod of the cylinder (8) is fixedly connected to a scraper (14). The scraper (14) is consistent with the cross-section of the hollow chamber inside the hollow block (4) and is vertically slidably installed inside the hollow block (4). The scraper (14) is in contact with the filter plate (9). A water pressure sensor (13) is fixedly installed at the center of the bottom surface of the scraper (14).

2. The anti-clogging device for a sewage pump according to claim 1, characterized in that, Two guide rods (10) are symmetrically fixedly installed on the bottom surface of the scraper (14). The bottom surface of the guide rod (10) is fixedly connected to the trapezoidal block (11). The bottom surface of the trapezoidal block (11) is fixedly connected to the first sealing plate (3). When the piston rod of the cylinder (8) is retracted, the top surface of the first sealing plate (3) abuts against the bottom surface of the hollow block (4), and the trapezoidal block (11) slides and engages in the unblocking port (12) to close the unblocking port.

3. The anti-clogging device for a sewage pump according to claim 2, characterized in that, A sealing ring is fixedly connected to the top surface of the first sealing plate (3), and the trapezoidal block (11) is located inside the sealing ring.

4. The anti-clogging device for a sewage pump according to claim 2, characterized in that, The four sides of the trapezoidal block (11) are all inclined surfaces that slope downwards.

5. The anti-clogging device for a sewage pump according to claim 2, characterized in that, The bottom area of ​​the trapezoidal block (11) is equal to the cross-sectional area of ​​the dredging opening (12) and smaller than the cross-sectional area of ​​the first sealing plate (3), the cross-sectional area of ​​the first sealing plate (3) being equal to the bottom area of ​​the hollow block (4).

6. The anti-clogging device for a sewage pump according to claim 1, characterized in that, Two second sealing plates (6) are symmetrically fixed on the top surface of the scraper (14), with their direction facing the direction of water flow and close to the inner wall of the hollow block (4); the second sealing plates (6) slide through the top wall of the hollow block (4), and a limiting block (7) is fixedly connected to the top surface of the two second sealing plates (6).

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