Anti-clogging sewage treatment plant tail water lifting device

Abstract

The present application relates to tail water treatment technical field, especially to a kind of anti-clogging sewage treatment plant tail water lifting device, including bucket, inlet conduit, first mounting rod, mounting plate, first water pump, first straight water pipe, double-pass sleeve, first valve, elbow, second valve etc.;The side wall of bucket is connected with inlet conduit, and the bottom of bucket is provided with first mounting rod, and mounting plate is arranged on first mounting rod, and first water pump and second water pump are installed on mounting plate, and first water pump suction pipe is connected with first straight water pipe by connecting piece;The present application solves the problem that suspended solids or solid substances adhere to the inner wall of water pipe during water pump suction process and block water pump and water pipe;The present application effectively prevents suspended solids or solid substances from blocking water pump by setting filter device, and backwashing of filter device realizes the cleaning function of filter head.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment plant wastewater lifting device that prevents clogging. Background Technology

[0002] Wastewater effluent lifting is a crucial step in the wastewater treatment process. Its function is to elevate the treated effluent to a designated height for subsequent discharge or reuse. In actual operation, effluent often contains a certain amount of suspended solids and other solid impurities. If it enters the lifting system directly, it can easily cause sedimentation and blockage in pumps, pipes, and other parts, affecting the normal operation of equipment, increasing maintenance costs, and even causing system shutdown.

[0003] Currently, underground tailwater lifting devices generally employ simple filtration methods, such as installing coarse screens or filters at the water inlet of the tank to intercept larger suspended solids. However, this type of structure has significant shortcomings: firstly, the filtration accuracy is limited, allowing fine particles to still enter the tank and gradually accumulate at the bottom after long-term operation, forming a sludge layer; secondly, installing a filter at the inlet significantly reduces the effective flow area, affecting water intake efficiency, and easily causing abnormal water levels, especially when the water load fluctuates greatly. Furthermore, existing devices often lack effective self-cleaning or backwashing mechanisms, requiring manual cleaning of clogged filter components, which is inconvenient and poses safety hazards.

[0004] For example, Chinese patent CN116556504A discloses an "Intelligent Anti-Clogging Sewage Lifting Environmental Protection Device," which uses a filter frame to filter and intercept impurities in sewage and a level sensor to detect water level changes to determine if clogging has occurred. The filter frame is then lifted to a maintenance platform for cleaning via a lifting mechanism. While this device has some clogging identification and cleaning capabilities, the filter frame needs to be lifted as a whole for cleaning, making the operation relatively cumbersome. Furthermore, the water intake must be interrupted during cleaning, affecting the continuous operation of the system. In addition, this structure lacks an online backwashing function for the filter components, making continuous cleaning impossible and limiting cleaning efficiency.

[0005] For example, utility model patent CN211898864U proposes an "integrated underground sewage lifting pump station," which uses a bar screen shredder installed at the inlet to crush debris, along with a bottom agitator to prevent sludge buildup. While this solution alleviates clogging caused by large debris, the bar screen shredder is ineffective at handling flexible or fibrous debris, and the fine particles after crushing may still accumulate at the pump's suction inlet, leading to a risk of clogging. Furthermore, the agitator only disturbs the bottom sludge and cannot effectively clean the filter components at the suction inlet, leaving a potential for localized clogging.

[0006] For example, patent document CN219547972U discloses "an integrated booster pump station with an anti-clogging mechanism," which uses a combination of a filter structure and a spiral agitator to isolate and break down foreign objects. While this design can prevent clogging of the inlet to some extent, its spiral agitator is mainly designed for large particles entering the filter structure. It is insufficient in dealing with the problem of fine suspended matter depositing near the pump's suction port, and its complex structure results in high maintenance costs.

[0007] Therefore, the existing technology still lacks a reasonable structure, high filtration efficiency, automatic backwashing function, and anti-clogging lifting device that can adapt to the characteristics of sewage treatment plant effluent, especially one that can achieve online cleaning of filter components without affecting the continuous operation of the system, thereby improving the reliability and automation level of the system. Summary of the Invention

[0008] In order to overcome the disadvantage that suspended solids or solid matter adhere to the inner wall of the water pipe during the water pump's suction process and block the water pump and water pipe, the present invention provides a clogging-proof sewage treatment plant effluent lifting device.

[0009] The technical solution of this invention is as follows: a clog-resistant wastewater treatment plant effluent lifting device, comprising a water tank, an inlet pipe, a first mounting rod, a mounting plate, a first water pump, a first straight water pipe, a double-ended sleeve, a first valve, a bend, a second valve, a U-shaped water pipe, an outlet pipe, a third valve, a fourth valve, a second water pump, a second straight water pipe, a fifth valve, a sixth valve, and a filter device. The water tank has an inlet pipe connected to its side wall. A first mounting rod is installed at the bottom of the water tank. The mounting plate is mounted on the first mounting rod, and a first water pump and a second water pump are mounted on the mounting plate. The suction pipe of the first water pump is connected to one end of the first straight water pipe via a connector. The first straight water pipe... The other end is connected to a double-through sleeve. A first valve is installed on the first straight water pipe. Both ends of the double-through sleeve are connected to bends. A second valve is installed on the bend near the first straight water pipe. The outlets of the first and second water pumps are respectively connected to the two interfaces of the U-shaped water pipe. An outlet pipe is connected above the U-shaped water pipe. A third and fourth valve are installed on the U-shaped water pipe. The suction pipe of the second water pump is connected to the second straight water pipe through a connector. The other end of the second straight water pipe is connected to the double-through sleeve. A fifth valve is installed on the second straight water pipe. A sixth valve is installed on the bend near the second straight water pipe. The other ends of the second and sixth valves on the two bends are connected to filter devices.

[0010] To further explain, the filtration device includes a third straight water pipe, a flared water pipe, and a filter head. The filtration device is connected to the second valve and the sixth valve through the third straight water pipe. The end of the third straight water pipe is connected to the flared water pipe, and the end of the flared water pipe is connected to the filter head.

[0011] To further explain, the filtration device also includes a water-blocking protrusion and a rifling tube. A water passage hole is provided on the flared water pipe, and a water-blocking protrusion is provided at the water passage hole on the inner wall of the flared water pipe. A rifling tube is sleeved on the outside of the flared water pipe, and a rifling groove is provided on the inner wall of the rifling tube. A cavity is left between the rifling tube and the flared water pipe, and the filter head is connected to the rifling tube.

[0012] To further explain, the filter device also includes a ring, a spring, a pin, and a limit switch. The ring is connected to the outside of the rifling tube, and a spring is installed inside the ring. A limit switch is installed on the rifling tube. The filter head is slidably connected to the inner wall of the ring and contacts the spring. The pin passes through the ring and is connected to the filter head.

[0013] To further explain, the water-blocking protrusion on the inner wall of the flared water pipe is flush with the inner wall of the third straight water pipe, ensuring normal water flow.

[0014] To further explain, the contact area between the rifling tube and the flared water tube has an arc-shaped structure, which facilitates backwashing.

[0015] To further explain, it also includes a second mounting rod and a filter screen bucket. The second mounting rod is installed at the bottom of the water bucket, and the filter screen bucket is installed on the second mounting rod. The filter screen bucket is connected to the water inlet pipe.

[0016] To further explain, it also includes a third mounting rod, a first water level switch, a second water level switch, a third water level switch, and a fourth water level switch. The third mounting rod is installed at the bottom of the water tank, and the third mounting rod is equipped with the first water level switch, the second water level switch, the third water level switch, and the fourth water level switch.

[0017] Further explanation: It also includes a first cleaning water pipe, a seventh valve, a second cleaning water pipe, and an eighth valve. The first cleaning water pipe and the second cleaning water pipe are connected to the U-shaped water pipe. The ends of the first cleaning water pipe and the second cleaning water pipe away from the U-shaped water pipe are respectively connected to bends. The first cleaning water pipe is equipped with a seventh valve, and the second cleaning water pipe is equipped with an eighth valve.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention effectively prevents suspended or solid matter from clogging the water pump by setting up a filtration device. The backwashing function of the filtration device cleans the filter head. If a large amount of waste accumulates at the bottom of the water tank, causing the filter head to become clogged, a corresponding water pump is used to clean the filter head effectively. When the water level in the water tank is high, two water pumps are started simultaneously to improve water absorption efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the tailwater lifting device in this invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the internal structure of the tailwater lifting device in this invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the filtration device in this invention;

[0024] Figure 5 This is an exploded structural diagram of the filtration device in this invention;

[0025] Figure 6 This is a schematic diagram of the cavity structure of the filter device in this invention;

[0026] Figure 7 This is a schematic diagram of the flared water pipe in this invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the rifling tube in this invention;

[0028] Figure 9 This is a schematic diagram of the control system in this invention.

[0029] The components include: 1. Water bucket; 2. Inlet pipe; 3. First mounting rod; 4. Mounting plate; 5. First water pump; 6. First straight water pipe; 7. Double-ended sleeve; 8. First valve; 9. Bend; 10. Second valve; 11. U-shaped water pipe; 12. Outlet pipe; 13. Third valve; 14. Fourth valve; 15. Second water pump; 16. Second straight water pipe; 17. Fifth valve; 18. Sixth valve; 19. Third straight water pipe; 20. Flared water pipe; 21. Water-blocking protrusion. 211. Water passage hole; 22. Rifling tube; 221. Rifling groove; 23. Filter head; 24. Ring sleeve; 25. Spring; 26. Pin; 27. Limit switch; 28. Second mounting rod; 29. ​​Filter screen barrel; 30. Third mounting rod; 31. First water level switch; 32. Second water level switch; 311. Third water level switch; 321. Fourth water level switch; 33. First cleaning water pipe; 34. Seventh valve; 35. Second cleaning water pipe; 36. Eighth valve. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example 1

[0031] like Figure 1-9As shown, a clog-resistant wastewater treatment plant effluent lifting device includes a water tank 1, an inlet pipe 2, a first mounting rod 3, a mounting plate 4, a first water pump 5, a first straight water pipe 6, a double-ended sleeve 7, a first valve 8, a bend 9, a second valve 10, a U-shaped water pipe 11, an outlet pipe 12, a third valve 13, a fourth valve 14, a second water pump 15, a second straight water pipe 16, a fifth valve 17, a sixth valve 18, a filter device, a third mounting rod 30, a first water level switch 31, and a second water level switch 32. The system includes a water level switch 32, a third water level switch 311, a fourth water level switch 321, a second mounting rod 28, and a filter screen 29. The side wall of the water tank 1 is connected to the inlet pipe 2. A first mounting rod 3 is installed at the bottom of the water tank 1. A mounting plate 4 is mounted on the first mounting rod 3. A first water pump 5 and a second water pump 15 are mounted on the mounting plate 4. The suction pipe of the first water pump 5 is connected to a first straight water pipe 6 via a connector. The other end of the first straight water pipe 6 is connected to a double-ended sleeve 7. A first valve 8 is installed on the first straight water pipe 6. The two ends of the double-ended sleeve 7... The end of the bend 9 is connected to the first straight water pipe 6. A second valve 10 is provided on the bend 9. The outlets of the first water pump 5 and the second water pump 15 are respectively connected to the two ports of the U-shaped water pipe 11. A water outlet pipe 12 is connected above the U-shaped water pipe 11. A third valve 13 and a fourth valve 14 are provided on the U-shaped water pipe 11. The suction pipe of the second water pump 15 is connected to the second straight water pipe 16 through a connector. The other end of the second straight water pipe 16 is connected to the double-through sleeve 7. A fifth valve 17 is provided on the second straight water pipe 16. The second straight water pipe 16 has a sixth valve 18 on its bend 9. The other ends of the second valve 10 and the sixth valve 18 on the two bends 9 are connected to a filter device. The bottom of the water tank 1 is equipped with a third mounting rod 30. The third mounting rod 30 is equipped with a first water level switch 31, a second water level switch 32, a third water level switch 311 and a fourth water level switch 321. The bottom of the water tank 1 is equipped with a second mounting rod 28. The second mounting rod 28 is equipped with a filter screen 29. The filter screen 29 is connected to the water inlet pipe 2.

[0032] The tailwater flows into the filter screen bucket 29 through the inlet pipe 2. The tailwater filtered by the filter screen bucket 29 flows into the water bucket 1. If the floating matter in the filter screen bucket 29 is stored for too long, it can be cleaned manually. The filter screen bucket 29 can be pulled out from the second mounting rod 28 manually or mechanically.

[0033] The tailwater flowing into bucket 1 is pumped out by the first water pump 5 and the second water pump 15. The specific working principle of the water pump is as follows:

[0034] When the water level reaches the position of the first water level switch 31, the first water level switch 31 transmits data to the control system. The control system controls the first water pump 5 to start, and simultaneously controls the first valve 8, the second valve 10 and the third valve 13 to open, and controls the fourth valve 14, the fifth valve 17 and the sixth valve 18 to close. At this time, the first water pump 5 works alone to draw the tailwater in the water tank 1 into the outlet pipe 12. During the water pumping process, the filter device filters the water to prevent the pump from clogging. When the water level in the water tank 1 drops to the position of the third water level switch 311, the third water level switch 311 transmits data to the control system, and the control system controls the first water pump 5 to shut down.

[0035] When the water level reaches the position of the second water level switch 32, the second water level switch 32 transmits data to the control system. The control system controls the second water pump 15 to start, and at the same time controls the fourth valve 14, the fifth valve 17 and the sixth valve 18 to open. At this time, the first water pump 5 and the second water pump 15 work simultaneously to draw the tailwater in the water tank 1 into the outlet pipe 12. During the water pumping process, the filter device filters the water to prevent the water pump from clogging. When the water level in the water tank 1 drops to the position of the fourth water level switch 321, the fourth water level switch 321 transmits data to the control system. The control system controls the second water pump 15, the fourth valve 14, the fifth valve 17 and the sixth valve 18 to close. Example 2

[0036] The filtration device includes a third straight water pipe 19, a flared water pipe 20, a filter head 23, a water-blocking protrusion 21, a rifled tube 22, a ring 24, a spring 25, a pin 26, and a limit switch 27. The filtration device is connected to the second valve 10 and the sixth valve 18 through the third straight water pipe 19. The end of the third straight water pipe 19 is connected to the flared water pipe 20, and the end of the flared water pipe 20 is connected to the filter head 23. The filter screen and the annular part of the filter head 23 are detachable. A water passage hole 211 is opened on the flared water pipe 20, and a water-blocking protrusion 21 is provided at the water passage hole 211 on the inner wall of the flared water pipe 20. A rifled tube 22 is sleeved on the outside of the flared water pipe 20, and a rifling groove 221 is opened on the inner wall of the rifling tube 22. A cavity is left between the rifling tube 22 and the flared water pipe 20. The filter head 23 is connected to the rifling tube 22, and the contact part between the rifling tube 22 and the flared water pipe 20 is... The position has an arc-shaped structure, which facilitates backwashing. The water-blocking protrusion 21 on the inner wall of the flared water pipe 20 is flush with the inner wall of the third straight water pipe 19 to ensure normal water flow. The outer side of the rifling tube 22 is connected to a ring 24, and a spring 25 is installed inside the ring 24. A limit switch 27 is installed on the rifling tube 22. The filter head 23 is slidably connected to the inner wall of the ring 24. The filter head 23 contacts the spring 25. The ejector pin 26 passes through the ring 24 and connects to the filter head 23.

[0037] When the water pump of the filtration device draws the tailwater, the tailwater flows through the filter head 23 into the flared water pipe 20 and the third straight water pipe 19, thereby achieving the filtration function and preventing the water pump from being blocked by water suction.

[0038] When the tailwater flows into the flared water pipe 20 and the third straight water pipe 19 after being filtered through the filter head 23, some of the tailwater is blocked by the water-blocking protrusion 21 and enters the water passage hole 211. Because one end of the rifling tube 22 is closed with the flared water pipe 20, there is a cavity between the rifling tube 22 and the flared water pipe 20. The tailwater entering through the water passage hole 211 flows back to the filter head 23 through the cavity. Because the inner wall of the rifling tube 22 has rifling grooves 221, the backflowing water will change the direction of the water flow and form a spiral water flow. The spiral water flow has a better cleaning effect on the filter head 23, avoids the filter head 23 from being blocked, and plays a role in preventing the water pump from being blocked by water suction.

[0039] When the filter head 23, which is movably connected to the ring 24, becomes clogged, the suction of the water pump will pull the filter head 23 into the ring 24. When the pin 26 on the filter head 23 pushes against the limit switch 27, the limit switch 27 transmits data to the control system. The control system controls the non-working water pump to start and simultaneously controls the starting water pump to shut down. At this time, the filter head 23 is cleaned, which prevents the water pump from becoming clogged. Example 3

[0040] It also includes a first cleaning water pipe 33, a seventh valve 34, a second cleaning water pipe 35 and an eighth valve 36. The first cleaning water pipe 33 and the second cleaning water pipe 35 are connected to the U-shaped water pipe 11. The ends of the first cleaning water pipe 33 and the second cleaning water pipe 35 away from the U-shaped water pipe 11 are respectively connected to the bend pipe 9. The first cleaning water pipe 33 is equipped with a seventh valve 34 and the second cleaning water pipe 35 is equipped with an eighth valve 36.

[0041] When cleaning the filter device connected to the second cleaning water pipe 35, the control system controls the first water pump 5, the first valve 8, the second valve 10 and the third valve 13 to close, and at the same time controls the second water pump 15 to start the fourth valve 14, the fifth valve 17, the sixth valve 18 and the eighth valve 36. Part of the tailwater drawn by the second water pump 15 is flushed through the second cleaning water pipe 35 to clean the filter device with greater water pressure, and vice versa.

[0042] When there is a lot of sediment at the bottom of the filter screen 29 or the water tank 1, it is cleaned manually. A ladder is installed inside the water tank 1, and workers can climb down the ladder to clean the bottom of the water tank 1.

[0043] When maintaining the water suction device inside this water tank 1, one can climb down the ladder to the water tank 1 for repair.

[0044] The pumping equipment is lifted to the outside of the water tank 1 for maintenance and other work.

[0045] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A clog-resistant effluent lifting device for wastewater treatment plants, characterized in that, The system includes a water bucket (1), an inlet pipe (2), a first mounting rod (3), a mounting plate (4), a first water pump (5), a first straight water pipe (6), a double-through sleeve (7), a first valve (8), a bend (9), a second valve (10), a U-shaped water pipe (11), an outlet pipe (12), a third valve (13), a fourth valve (14), a second water pump (15), a second straight water pipe (16), a fifth valve (17), a sixth valve (18), and a filter device. The side wall of the water bucket (1) is connected to the inlet pipe (2). The bottom of the water bucket (1) is equipped with the first mounting rod (3). The mounting plate (4) is set on the first mounting rod (3). The first water pump (5) and the second water pump (15) are installed on the mounting plate (4). The suction pipe of the first water pump (5) is connected to one end of the first straight water pipe (6) through a connector. The other end of the first straight water pipe (6) is connected to the double-through sleeve (7). The first straight water pipe (6) is equipped with the first valve (8). 8) The two ends of the double-through sleeve (7) are connected to the bends (9). A second valve (10) is provided on the bend (9) near the first straight water pipe (6). The outlets of the first water pump (5) and the second water pump (15) are respectively connected to the two ports of the U-shaped water pipe (11). A water outlet pipe (12) is connected above the U-shaped water pipe (11). A third valve (13) and a fourth valve (14) are provided on the U-shaped water pipe (11). The suction pipe of the second water pump (15) is connected to the first through a connector. Two straight water pipes (16) are connected. The other end of the second straight water pipe (16) is connected to the double-through sleeve (7). A fifth valve (17) is provided on the second straight water pipe (16). A sixth valve (18) is provided on the bend (9) near the second straight water pipe (16). The other ends of the second valve (10) and the sixth valve (18) on the two bends (9) are connected to a filter device. The filter device includes a third straight water pipe (19), a flared water pipe (20), a filter head (23), a water-blocking protrusion (21), and a rifling tube (22). The filter device consists of a ring (24), a spring (25), a pin (26), and a limit switch (27). It is connected to the second valve (10) and the sixth valve (18) via a third straight water pipe (19). A flared water pipe (20) is connected to the end of the third straight water pipe (19), and a filter head (23) is connected to the end of the flared water pipe (20). A water passage hole (211) is provided on the flared water pipe (20), and a water-blocking protrusion (21) is provided at the water passage hole (211) on the inner wall of the flared water pipe (20). A rifling tube (22) is fitted on the outer side of the flared water pipe (20). The inner wall of the rifling tube (22) is provided with a rifling groove (221), and there is a cavity between the rifling tube (22) and the flared water pipe (20). The filter head (23) is connected to the rifling tube (22). A ring sleeve (24) is connected to the outside of the rifling tube (22). A spring (25) is provided inside the ring sleeve (24). A limit switch (27) is provided on the rifling tube (22). The filter head (23) is slidably connected to the inner wall of the ring sleeve (24). The filter head (23) contacts the spring (25). The ejector pin (26) passes through the ring sleeve (24) and is connected to the filter head (23).

2. The anti-clogging wastewater treatment plant effluent lifting device according to claim 1, characterized in that, The water-blocking protrusion (21) on the inner wall of the flared water pipe (20) is flush with the inner wall of the third straight water pipe (19) to ensure normal water flow.

3. A clog-resistant wastewater treatment plant effluent lifting device according to claim 2, characterized in that, The contact area between the rifling tube (22) and the flared water tube (20) has an arc-shaped structure, which facilitates backwashing.

4. A clog-resistant wastewater treatment plant effluent lifting device according to claim 1, characterized in that, It also includes a second mounting rod (28) and a filter screen bucket (29). The bottom of the water bucket (1) is equipped with a second mounting rod (28), and the second mounting rod (28) is equipped with a filter screen bucket (29). The filter screen bucket (29) is connected to the water inlet pipe (2).

5. A clog-resistant wastewater treatment plant effluent lifting device according to claim 1, characterized in that, It also includes a third mounting rod (30), a first water level switch (31), a second water level switch (32), a third water level switch (311) and a fourth water level switch (321). The bottom of the water tank (1) is equipped with a third mounting rod (30), and the third mounting rod (30) is equipped with a first water level switch (31), a second water level switch (32), a third water level switch (311) and a fourth water level switch (321).

6. A clog-resistant wastewater treatment plant effluent lifting device according to claim 1, characterized in that, It also includes a first cleaning water pipe (33), a seventh valve (34), a second cleaning water pipe (35) and an eighth valve (36). The first cleaning water pipe (33) and the second cleaning water pipe (35) are connected to the U-shaped water pipe (11). The ends of the first cleaning water pipe (33) and the second cleaning water pipe (35) away from the U-shaped water pipe (11) are respectively connected to a bend (9). The first cleaning water pipe (33) is equipped with a seventh valve (34), and the second cleaning water pipe (35) is equipped with an eighth valve (36).

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