Pump station pollution discharge liquid level automatic control device

Abstract

The utility model belongs to the technical field of pump station automatic pollution discharge, and particularly relates to a pump station pollution discharge liquid level automatic control device which comprises a water accumulation pool and further comprises an automatic pollution discharge assembly arranged on the surface of the water accumulation pool, and the automatic pollution discharge assembly comprises a connecting base installed on the inner surface of the water accumulation pool. The device comprises a connecting base, a sewage discharge pump is arranged on one side of the connecting base, a connecting plate is fixedly connected to the surface of one side of the sewage discharge pump, nuts are symmetrically arranged on the surface of one side of the connecting base, the surfaces of the nuts are in threaded connection with first fixing bolts, and the first fixing bolts slide on the connecting base and the connecting plate. According to the device, a worker can conveniently install the sewage discharge pump and protect the liquid level sensor, so that the liquid level sensor is more accurate during measurement, meanwhile, sewage is filtered through the filtering barrel, and the problem that the sewage discharge pump is blocked due to large pollutants is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of automatic sewage discharge technology for pumping stations, and specifically relates to an automatic control device for sewage discharge level in pumping stations. Background Technology

[0002] Current booster pump stations are used for the discharge of treated domestic sewage. However, when discharging sewage, the presence of solid waste in the sewage can cause blockages if the solid waste is directly pumped into the sewage pump. Currently, integrated booster pump stations are still operated manually by staff. However, staff cannot quickly adapt to the actual conditions inside the pump station, and manual operation is slow and inefficient. Therefore, there is an urgent need for an automatic control device for integrated booster pump stations.

[0003] According to the public announcement (CN211900939U), an automatic control device for a sewage pump is disclosed. This technology discloses "a technical solution including: a sewage tank including a first water accumulation tank, a second pumping tank, a filtration device, a sewage pump, a control unit, a trigger sensor, etc., which has the technical effect of avoiding measurement errors caused by debris and sewage flow impact of liquid level sensors in traditional devices".

[0004] In this existing design, an overflow outlet is used to allow sewage exceeding the limit height to overflow into the second pumping tank. However, during the sewage discharge process, debris in the sewage is easily deposited in the sewage tank, making it difficult for the sewage discharge pump to discharge the sewage quickly, resulting in a reduction in the sewage discharge efficiency of the device.

[0005] Therefore, an automatic control device for the sewage level of pumping stations is designed to solve the above problems. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides an automatic control device for sewage discharge levels in pumping stations. This device facilitates installation by workers on the sewage discharge pumps, protects the level sensor for more accurate measurements, and filters the sewage through a filter bucket to prevent blockages caused by large pollutants.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic sewage level control device for a pumping station, comprising a sump and an automatic sewage discharge assembly disposed on the surface of the sump. The automatic sewage discharge assembly includes a connecting base installed on the inner surface of the sump. A sewage discharge pump is disposed on one side of the connecting base, and a connecting plate is fixedly connected to one side of the sewage discharge pump. Nuts are symmetrically disposed on one side of the connecting base, and each nut is threaded with a fixing bolt. Each fixing bolt is slidably connected to the connecting base and the connecting plate. A water outlet pipe is disposed on one side of the sump, and the water outlet pipe is fixedly connected to the end of the connecting base away from the connecting plate. A water inlet pipe is installed on one side of the sump. A low-level sensor and a high-level sensor are also respectively installed on the inner surface of the sump. A controller is disposed above the sump, and the low-level sensor, the high-level sensor, and the sewage discharge pump are all signal-connected to the controller.

[0008] In a preferred embodiment of the automatic control device for sewage discharge level in a pumping station according to this utility model, slide rods are symmetrically fixedly connected to the upper surface of the connecting base, a top plate is fixedly connected to the end of the slide rod away from the connecting base, the top plate is fixedly connected to the water accumulation tank, and retaining rings are slidably connected to the surface of the slide rods, and the retaining rings are fixedly connected to the connecting plate.

[0009] As a preferred embodiment of the automatic control device for sewage discharge level in pumping stations according to this utility model, the upper surface of the sewage discharge pump is symmetrically and fixedly connected with lifting rings.

[0010] As a preferred embodiment of the automatic control device for sewage discharge level in a pumping station according to this utility model, a fixing ring is fitted on the surface of the outlet pipe, and the fixing ring is fixedly connected to the water accumulation tank.

[0011] As a preferred embodiment of the automatic control device for sewage discharge level in pumping stations according to this utility model, both the high-level sensor and the low-level sensor are equipped with protective covers.

[0012] As a preferred embodiment of the automatic control device for sewage discharge level in a pumping station according to this utility model, it further includes a check filter assembly disposed inside the inlet pipe. The check filter assembly includes a first fixing plate fixedly connected to the inner surface of the inlet pipe. A connecting ring is also provided on the inner surface of the inlet pipe. The surface of the connecting ring is provided with a threaded groove. The connecting ring is threadedly connected to the inlet pipe through the threaded groove. A second fixing plate is fixedly connected to the inner surface of the connecting ring. Movable rods are slidably connected to the surfaces of both the second fixing plate and the first fixing plate. A water-blocking plate is fixedly connected to the surface of the movable rod. A limit spring is fixedly connected to one side surface of the water-blocking plate. The end of the limit spring away from the water-blocking plate is fixedly connected to the first fixing plate.

[0013] As a preferred embodiment of the automatic control device for sewage discharge level in a pumping station according to this utility model, the inner surface of the inlet pipe is symmetrically fixedly connected with mounting rings, and the surface of each mounting ring is threadedly connected with a filter barrel. The disc end of the inlet pipe is symmetrically threadedly connected with two fixing bolts, and each fixing bolt penetrates the surface of the disc end of the inlet pipe and is threadedly connected with a connecting disc.

[0014] As a preferred embodiment of the automatic control device for sewage discharge level in pumping stations according to this utility model, a rotating wheel is rotatably connected to the inner surface of the inlet pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the addition of an automatic sewage discharge component makes it easier for staff to install the sewage discharge pump, protects the liquid level sensor to make it more accurate in measurement, and at the same time adds a check filter component to filter the sewage through the filter bucket, avoiding the problem of large pollutants causing blockage of the sewage discharge pump. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting base in this utility model;

[0019] Figure 3 This is a structural schematic diagram of the fixing bolt one in this utility model;

[0020] Figure 4 This is a schematic diagram of the retaining ring in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the protective cover in this utility model;

[0022] Figure 6 This is a schematic diagram of the connecting ring in this utility model;

[0023] Figure 7 This is a schematic diagram of the movable rod in this utility model;

[0024] Figure 8 This is a schematic diagram of the filter barrel in this utility model;

[0025] Figure 9 This is a schematic diagram of the connection of the controller in this utility model;

[0026] In the picture:

[0027] 1. Water collection tank;

[0028] 2. Automatic sewage discharge assembly; 21. Connecting base; 22. Sewage discharge pump; 23. Top plate; 24. Slide rod; 25. Snap ring; 26. Connecting plate; 27. Lifting ring; 28. Water outlet pipe; 29. ​​Fixing ring; 210. Fixing bolt one; 211. Nut; 212. Low position sensor; 213. High position sensor; 214. Controller; 215. Water inlet pipe; 216. Protective cover;

[0029] 3. Check filter assembly; 31. Fixing plate one; 32. Connecting ring; 33. Threaded groove; 34. Fixing plate two; 35. Water blocking plate; 36. Movable rod; 37. Limiting spring; 38. Mounting ring; 39. Filter barrel; 310. Connecting plate; 311. Fixing bolt two; 312. Rotary wheel. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] like Figure 1 As shown;

[0033] An automatic control device for sewage level in a pumping station includes a water collection tank 1.

[0034] In this implementation plan: The existing sump 1 provides an automatic control device for the sewage pump. By depositing debris and sewage in the first sump and setting an overflow port, sewage exceeding the limit height overflows into the second pumping tank, and then the sewage pump in the second pumping tank empties the sewage. This effectively solves the problem of measurement errors caused by debris and sewage flow impact of the liquid level sensor in traditional devices. For the specific working process, please refer to "CN211900939U An Automatic Control Device for Sewage Pump". However, during the sewage discharge process, debris in the sewage is easy to settle in the sewage tank, making it difficult for the sewage discharge pump to discharge sewage quickly, resulting in a reduction in the sewage discharge effect of the device. To solve this technical problem, an automatic sewage discharge component 2 and a check filter component 3 are added on this basis.

[0035] Furthermore:

[0036] like Figures 1 to 4 As shown:

[0037] Based on the above: An automatic sewage discharge assembly 2 is installed on the surface of the water collection tank 1. The automatic sewage discharge assembly 2 includes a connecting base 21 installed on the inner surface of the water collection tank 1. A sewage discharge pump 22 is installed on one side of the connecting base 21. A connecting plate 26 is fixedly connected to one side of the sewage discharge pump 22. Nuts 211 are symmetrically arranged on one side of the connecting base 21. Each nut 211 is threaded with a fixing bolt 210. The fixing bolts 210 are slidably connected to the connecting base 21 and the connecting plate 26. A water outlet pipe 28 is installed on one side of the water collection tank 1. The water outlet pipe 28 is fixedly connected to the end of the connecting base 21 away from the connecting plate 26. A water inlet pipe 215 is installed on one side of the water collection tank 1. A low-level sensor 212 and a high-level sensor 213 are also installed on the inner surface of the water collection tank 1. A controller 214 is installed above the water collection tank 1. The low-level sensor 212, the high-level sensor 213, and the sewage discharge pump 22 are all signal-connected to the controller 214.

[0038] In this implementation scheme: A connecting base 21 is installed on the inner surface of the water collection tank 1. A sewage discharge pump 22 is installed on one side of the connecting base 21. A connecting plate 26 is fixedly connected to one side of the sewage discharge pump 22. Nuts 211 are symmetrically arranged on one side of the connecting base 21. Each nut 211 is threaded with a fixing bolt 210, which is slidably connected to the connecting base 21 and the connecting plate 26. A water outlet pipe 28 is installed on one side of the water collection tank 1. The water outlet pipe 28 is fixedly connected to the end of the connecting base 21 away from the connecting plate 26. A water inlet pipe 215 is installed on one side of the water collection tank 1. A low-level sensor 212 and a high-level sensor 213 are also installed on the inner surface of the water collection tank 1. A controller 214 is installed above pool 1. The low-level sensor 212, the high-level sensor 213, and the sewage discharge pump 22 are all connected to the controller 214. This design facilitates the installation of the sewage discharge pump 22 by the staff, protects the liquid level sensor to make its measurement more accurate, and filters the sewage through the filter bucket 39 to avoid the problem of large pollutants clogging the sewage discharge pump 22. At the same time, the sewage discharge pump 22 can be controlled to automatically discharge sewage. When the high-level sensor 213 does not detect sewage, the controller 214 controls the sewage discharge pump 22 to discharge sewage. When the low-level sensor 212 does not detect sewage, the controller 214 stops the sewage discharge pump 22 from working.

[0039] Furthermore:

[0040] like Figures 1 to 4 As shown:

[0041] In an optional embodiment, slide rods 24 are symmetrically fixedly connected to the upper surface of the connecting base 21. A top plate 23 is fixedly connected to the end of the slide rod 24 away from the connecting base 21. The top plate 23 is fixedly connected to the water collection tank 1. Clamping rings 25 are slidably connected to the surface of the slide rods 24. Clamping rings 25 are fixedly connected to the connecting plate 26.

[0042] In this embodiment: because the upper surface of the connecting base 21 is symmetrically fixedly connected with sliding rods 24, the end of the sliding rod 24 away from the connecting base 21 is fixedly connected to the top plate 23, the top plate 23 is fixedly connected to the water accumulation tank 1, and the surface of the sliding rod 24 is slidably connected with retaining rings 25, and the retaining rings 25 are fixedly connected to the connecting plate 26. With this design, it is convenient for the staff to install the sewage discharge pump 22 through the sliding rods 24.

[0043] Furthermore:

[0044] like Figures 1 to 4 As shown:

[0045] In an optional embodiment, the upper surface of the sewage discharge pump 22 is symmetrically fixed with lifting rings 27.

[0046] In this embodiment: because the upper surface of the sewage discharge pump 22 is symmetrically fixedly connected with lifting rings 27, this design is adopted. Since the sewage tank is relatively high, it is necessary to transport the sewage discharge pump 22 down from a high place. The lifting rings 27 facilitate the hoisting of the sewage discharge pump 22 by the staff.

[0047] Furthermore:

[0048] like Figures 1 to 2 As shown:

[0049] In an optional embodiment, a fixing ring 29 is fitted onto the surface of the water outlet pipe 28, and the fixing ring 29 is fixedly connected to the water collection tank 1.

[0050] In this embodiment: because a fixing ring 29 is fitted on the surface of the water outlet pipe 28, and the fixing ring 29 is fixedly connected to the water collection tank 1, this design can fix the water outlet pipe 28.

[0051] Furthermore:

[0052] like Figures 1 to 4 As shown:

[0053] In an optional embodiment, both the high-position sensor 213 and the low-position sensor 212 are fitted with protective covers 216.

[0054] In this implementation scheme: Since the surfaces of both the high-position sensor 213 and the low-position sensor 212 are equipped with protective covers 216, this design can protect the high-position sensor 213 and the low-position sensor 212 from the impact of water flow, which may cause errors in measurement and thus prevent timely control of the sewage discharge pump 22.

[0055] Furthermore:

[0056] like Figures 6 to 7 As shown:

[0057] In an optional embodiment, a check filter assembly 3 is further included inside the water inlet pipe 215. The check filter assembly 3 includes a fixing plate 31 fixedly connected to the inner surface of the water inlet pipe 215. A connecting ring 32 is also provided on the inner surface of the water inlet pipe 215. A threaded groove 33 is opened on the surface of the connecting ring 32. The connecting ring 32 is threadedly connected to the water inlet pipe 215 through the threaded groove 33. A fixing plate 34 is fixedly connected to the inner surface of the connecting ring 32. Movable rods 36 are slidably connected to the surfaces of both the fixing plate 34 and the fixing plate 31. A water blocking plate 35 is fixedly connected to the surface of the movable rod 36. A limit spring 37 is fixedly connected to one side surface of the water blocking plate 35. The end of the limit spring 37 away from the water blocking plate 35 is fixedly connected to the fixing plate 31.

[0058] In this implementation scheme: a fixing plate 31 is fixedly connected to the inner surface of the inlet pipe 215, and a connecting ring 32 is also provided on the inner surface of the inlet pipe 215. A threaded groove 33 is opened on the surface of the connecting ring 32, and the connecting ring 32 is threadedly connected to the inlet pipe 215 through the threaded groove 33. A fixing plate 34 is fixedly connected to the inner surface of the connecting ring 32. Movable rods 36 are slidably connected to the surfaces of both the fixing plate 34 and the fixing plate 31. A water blocking plate 35 is fixedly connected to the surface of the movable rod 36. A limit spring 37 is fixedly connected to one side of the surface of the water blocking plate 35. The end of the limit spring 37 away from the water blocking plate 35 is fixedly connected to the fixing plate 31. With this design, sewage backflow can be prevented when sewage is not discharged.

[0059] Furthermore:

[0060] like Figures 6 to 8 As shown:

[0061] In an optional embodiment, mounting rings 38 are symmetrically fixedly connected to the inner surface of the water inlet pipe 215, and filter barrels 39 are threadedly connected to the surfaces of the mounting rings 38. Fixing bolts 311 are symmetrically threadedly connected to the disc end of the water inlet pipe 215, and the fixing bolts 311 penetrate the surface of the disc end of the water inlet pipe 215 and are threadedly connected to the connecting disc 310.

[0062] In this embodiment: because the inner surface of the water inlet pipe 215 is symmetrically fixedly connected with mounting rings 38, and the surfaces of the mounting rings 38 are all threadedly connected with filter barrels 39, and the disc end of the water inlet pipe 215 is symmetrically threadedly connected with fixing bolts 311, the fixing bolts 311 all penetrate the surface of the disc end of the water inlet pipe 215 and are threadedly connected with connecting discs 310, the wastewater is filtered through the filter barrels 39 to avoid the problem of large pollutants causing blockage of the wastewater discharge pump 22, and at the same time it is convenient for staff to replace the filter barrels 39.

[0063] Furthermore:

[0064] like Figure 6 As shown:

[0065] In an optional embodiment, a wheel 312 is also rotatably connected to the inner surface of the water inlet pipe 215.

[0066] In this embodiment: Since the inner surface of the water inlet pipe 215 is also rotatably connected to the wheel 312, this design can accelerate the water flow rate through the wheel 312.

[0067] Working principle: A connecting base 21 is installed on the inner surface of the water collection tank 1. A sewage discharge pump 22 is installed on one side of the connecting base 21. A connecting plate 26 is fixedly connected to one side of the sewage discharge pump 22. Nuts 211 are symmetrically arranged on one side of the connecting base 21. Each nut 211 is threaded with a fixing bolt 210. The fixing bolts 210 are slidably connected to the connecting base 21 and the connecting plate 26. A water outlet pipe 28 is installed on one side of the water collection tank 1. The water outlet pipe 28 is fixedly connected to the end of the connecting base 21 away from the connecting plate 26. A water inlet pipe 215 is installed on one side of the water collection tank 1. Low-position transmission devices are also installed on the inner surface of the water collection tank 1. Sensors 212 and 213 are installed above the water tank 1. A controller 214 is also installed above the water tank 1. The low-level sensor 212, high-level sensor 213, and sewage discharge pump 22 are all connected to the controller 214. This design facilitates the installation of the sewage discharge pump 22, protects the level sensors for more accurate measurements, and filters the sewage through the filter bucket 39 to prevent blockage of the sewage discharge pump 22 by large pollutants. It also allows for automatic sewage discharge from the sewage discharge pump 22. When the high-level sensor 213 does not detect sewage, the controller 214 controls the sewage discharge pump 22 to discharge sewage. When sensor 212 fails to detect sewage, controller 214 stops the sewage discharge pump 22. Because sliding rods 24 are symmetrically fixedly connected to the upper surface of the connecting base 21, and a top plate 23 is fixedly connected to the end of the sliding rod 24 away from the connecting base 21, the top plate 23 is fixedly connected to the water collection tank 1. Each surface of the sliding rod 24 is slidably connected with retaining rings 25, which are all fixedly connected to the connecting plate 26. This design facilitates the installation of the sewage discharge pump 22 by personnel using the sliding rods 24. Because lifting rings 27 are symmetrically fixedly connected to the upper surface of the sewage discharge pump 22, this design is suitable for transporting the sewage discharge pump 22 down from a height, especially considering the relatively high height of the sewage tank. The lifting ring 27 facilitates the hoisting of the sewage discharge pump 22 by staff. A fixing ring 29 is fitted onto the surface of the outlet pipe 28, and the fixing ring 29 is fixedly connected to the water collection tank 1. This design secures the outlet pipe 28. Protective covers 216 are installed on the surfaces of both the high-level sensor 213 and the low-level sensor 212. This design protects the high-level sensor 213 and the low-level sensor 212 from the impact of water flow, preventing measurement errors that could lead to untimely control of the sewage discharge pump 22. A fixing plate 31 is fixedly connected to the inner surface of the inlet pipe 215, and a connecting ring 32 is also provided on the inner surface of the inlet pipe 215.The connecting ring 32 has a threaded groove 33 on its surface. The connecting ring 32 is threadedly connected to the inlet pipe 215 through the threaded groove 33. A fixing plate 24 is fixedly connected to the inner surface of the connecting ring 32. Movable rods 36 are slidably connected to the surfaces of both the fixing plate 24 and the fixing plate 1 31. A water-blocking plate 35 is fixedly connected to the surface of the movable rod 36. A limit spring 37 is fixedly connected to one side of the surface of the water-blocking plate 35. The end of the limit spring 37 away from the water-blocking plate 35 is fixedly connected to the fixing plate 1 31. With this design, sewage backflow can be prevented when sewage is not being discharged, because the inner surface of the inlet pipe 215 is symmetrically fixed. A mounting ring 38 is attached, and filter barrels 39 are threadedly connected to the surface of the mounting ring 38. The disc end of the inlet pipe 215 is symmetrically threaded with fixing bolts 311, which penetrate the surface of the disc end of the inlet pipe 215 and are threadedly connected to a connecting disc 310. This design filters wastewater through the filter barrels 39, preventing blockage of the wastewater discharge pump 22 by large pollutants. It also facilitates easy replacement of the filter barrels 39. Because a rotating wheel 312 is rotatably connected to the internal surface of the inlet pipe 215, this design allows for faster water flow.

[0068] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic control device for sewage level in a pumping station, comprising a water collection tank (1), characterized in that: It also includes an automatic sewage discharge assembly (2) installed on the surface of the water collection tank (1); The automatic sewage discharge assembly (2) includes a connecting base (21) installed on the inner surface of the water collection tank (1). A sewage discharge pump (22) is provided on one side of the connecting base (21). A connecting plate (26) is fixedly connected to one side surface of the sewage discharge pump (22). Nuts (211) are symmetrically arranged on one side surface of the connecting base (21). Each nut (211) is threaded with a fixing bolt (210). The fixing bolts (210) are slidably connected to the connecting base (21) and the connecting plate (26). The water collection tank (1) A water outlet pipe (28) is provided on one side surface of the water tank (1). The water outlet pipe (28) and the connecting base (21) are fixedly connected at the end away from the connecting plate (26). A water inlet pipe (215) is installed on one side surface of the water tank (1). A low-position sensor (212) and a high-position sensor (213) are also installed on the inner surface of the water tank (1). A controller (214) is provided above the water tank (1). The low-position sensor (212), the high-position sensor (213), and the sewage discharge pump (22) are all signal connected to the controller (214).

2. The automatic control device for sewage level in a pumping station according to claim 1, characterized in that: The upper surface of the connecting base (21) is symmetrically fixedly connected with sliding rods (24), and the end of the sliding rod (24) away from the connecting base (21) is fixedly connected with a top plate (23). The top plate (23) is fixedly connected to the water pool (1). The surface of the sliding rod (24) is slidably connected with retaining rings (25), and the retaining rings (25) are fixedly connected to the connecting plate (26).

3. The automatic control device for sewage level in a pumping station according to claim 2, characterized in that: The upper surface of the sewage discharge pump (22) is symmetrically fixed with lifting rings (27).

4. The automatic control device for sewage level in a pumping station according to claim 3, characterized in that: A fixing ring (29) is fitted on the surface of the water outlet pipe (28), and the fixing ring (29) is fixedly connected to the water collection tank (1).

5. The automatic control device for sewage level in a pumping station according to claim 4, characterized in that: The surfaces of both the high-position sensor (213) and the low-position sensor (212) are fitted with protective covers (216).

6. The automatic control device for sewage level in a pumping station according to claim 1, characterized in that: It also includes a backflow preventer (3) installed inside the inlet pipe (215); The check filter assembly (3) includes a fixing plate (31) fixedly connected to the inner surface of the water inlet pipe (215). The inner surface of the water inlet pipe (215) is also provided with a connecting ring (32). The surface of the connecting ring (32) is provided with a threaded groove (33). The connecting ring (32) is threadedly connected to the water inlet pipe (215) through the threaded groove (33). The inner surface of the connecting ring (32) is fixedly connected with a fixing plate (34). The surfaces of the fixing plate (34) and the fixing plate (31) are both slidably connected with a movable rod (36). The surface of the movable rod (36) is fixedly connected with a water blocking plate (35). One side surface of the water blocking plate (35) is fixedly connected with a limit spring (37). The end of the limit spring (37) away from the water blocking plate (35) is fixedly connected to the fixing plate (31).

7. The automatic control device for sewage level in a pumping station according to claim 6, characterized in that: The inner surface of the water inlet pipe (215) is symmetrically fixed with mounting rings (38), and the surface of the mounting rings (38) is threaded with filter barrels (39). The disc end of the water inlet pipe (215) is symmetrically threaded with fixing bolts (311). The fixing bolts (311) penetrate the surface of the disc end of the water inlet pipe (215) and are threaded with connecting discs (310).

8. The automatic control device for sewage level in a pumping station according to claim 7, characterized in that: The inner surface of the water inlet pipe (215) is also rotatably connected to a wheel (312).

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