Water level self-adaptive submersible sewage pump for sewage treatment plant

Abstract

The invention relates to the field of submersible sewage pumps, in particular to a water level self-adaptive submersible sewage pump for a sewage treatment plant, which comprises a mounting frame, and the bottom end of the mounting frame is symmetrically and fixedly connected with transportation guide rails; the annular filter box is connected with the mounting frame through a traction assembly, and the traction assembly is used for dragging and transporting the annular filter box into water; the submersible sewage pump body is arranged in the annular filter box through a connecting part; the life buoy and the annular filter box are arranged, the life buoy enables the submersible sewage pump body and the annular filter box to descend synchronously with the water surface, on one hand, the submersible sewage pump body can stably pump and drain sewage, and on the other hand, a cable interface at the top end of the submersible sewage pump body is always located on the sewage; the possibility of short circuit caused by contact between the cable interface and sewage is reduced.

Description

Technical Field

[0001] The invention relates to the field of submersible sewage pumps, and in particular to a submersible sewage pump with adaptive water level for a sewage treatment plant. Background Art

[0002] Submersible sewage pump is a submersible sewage pump that can tear and cut long fibers, bags, belts, grass, cloth strips and other materials in sewage, and then discharge them smoothly. It is particularly suitable for conveying liquids containing hard solids, fibers, and particularly dirty, sticky, and slippery liquids, and is often used in sewage treatment plants.

[0003] For example, the invention patent with application number CN201610043839.2 discloses an integrated sewage treatment pump station, including: a sewage pool with a sewage inlet on its side wall; a submersible sewage pump, which is arranged at the lower part of the sewage pool and has a gap between it and the bottom wall of the sewage pool; an anti-vortex plate, which is arranged in the sewage pool at the water inlet of the submersible sewage pump, and is configured to reduce the vortex at the water inlet of the submersible sewage pump.

[0004] In the prior art, a steel cable is usually used to transport the submersible sewage pump to the bottom of a sewage pool, and then the sewage in the sewage pool is pumped out by the submersible sewage pump. However, when the sewage in the sewage pool is deep, the entire submersible sewage pump and the cable interface at the top of the submersible sewage pump will be submerged. The cable interface at the top of the existing submersible sewage pump is mostly difficult to fully ensure sealing, which can easily lead to the entry of sewage and thus easily cause tripping problems.

[0005] Therefore, the present invention proposes a submersible sewage pump with adaptive water level for sewage treatment plant to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a submersible sewage pump with adaptive water level for a sewage treatment plant.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a submersible sewage pump with adaptive water level for a sewage treatment plant, comprising:

[0008] A mounting frame, wherein the bottom end of the mounting frame is symmetrically fixedly connected to a transport rail;

[0009] An annular filter box, wherein the annular filter box is connected to the mounting frame via a traction assembly, and the traction assembly is used to traction and transport the annular filter box into the water;

[0010] A submersible sewage pump body, wherein the submersible sewage pump body is arranged in the annular filter box through a connecting component;

[0011] A life buoy, wherein an annular connecting plate is fixedly connected to the inner wall of the life buoy, the annular connecting plate is slidably connected to the outer wall of the annular filter box, the outer wall of the annular connecting plate is symmetrically fixedly connected to a first connecting frame, and the first connecting frame is slidably connected to the transport guide rail at a corresponding position;

[0012] The cable interface at the top of the submersible sewage pump body is located above the life buoy, and the bottom end of the water pumping end of the submersible sewage pump body extends to the inner bottom end of the annular filter box;

[0013] The buoyancy of the lifebuoy in the sewage ensures that the cable interface at the top of the submersible sewage pump body is always above the sewage, reducing the possibility of short circuit caused by contact between the cable interface and the sewage;

[0014] Specifically, in the prior art, a steel cable is usually used to transport the submersible sewage pump to the bottom of a sewage pool, and then the sewage in the sewage pool is pumped out by the submersible sewage pump. However, when the sewage in the sewage pool is deep, the entire submersible sewage pump and the cable interface at the top of the submersible sewage pump will be submerged, and the cable interface at the top of the existing submersible sewage pump is mostly difficult to fully ensure the sealing, which easily leads to the entry of sewage and the problem of tripping. The present technical solution can solve the above problem. The specific operation is as follows: first, the installation frame is driven by the external lifting equipment to move the transport guide rail to the designated location in the sewage pool, and then the traction assembly is used to pull the installation frame to the designated location in the sewage pool. The bottom of the annular filter box is in the water. Under the buoyancy of the life buoy, the life buoy can drive the submersible sewage pump body and the annular filter box to float on the water surface. Since the cable interface at the top of the submersible sewage pump body is located above the life buoy, the cable interface at the top of the submersible sewage pump body is always on the sewage, reducing the possibility of short circuit caused by the contact between the cable interface and the sewage. Then, by starting the submersible sewage pump body, the submersible sewage pump body pumps out the sewage in the sewage pool. In the process of sewage discharge, the sewage can be filtered through the filtering effect of the annular filter box to remove larger particles in the sewage, thereby reducing damage to the submersible sewage pump body.

[0015] As sewage is continuously discharged, the water surface in the sewage pool drops. The lifebuoy allows the submersible sewage pump body and the annular filter box to drop synchronously with the water surface. On the one hand, it is beneficial for the submersible sewage pump body to stably pump out sewage. On the other hand, it allows the cable interface at the top of the submersible sewage pump body to always be above the sewage, reducing the possibility of short circuit caused by the contact between the cable interface and the sewage.

[0016] At the same time, a first connecting frame is provided to limit the life buoy, so as to prevent the life buoy from driving the annular filter box to move and float on the sewage pool, and to reduce the possibility of the annular filter box tipping over.

[0017] Preferably, the connecting component comprises:

[0018] A sealing cover, the top of which is rotatably connected to the top of the annular filter box, the side wall of the sealing cover is symmetrically fixedly connected to a second connecting frame, and the second connecting frame is slidably connected to the transport guide rail at a corresponding position;

[0019] The top of the submersible sewage pump body is fixedly connected to the bottom of the sealing cover, the cable in the submersible sewage pump body passes through the sealing cover and is slidably connected to the sealing cover, and the top of the drainage end of the submersible sewage pump body passes through the sealing cover and is fixedly connected to the sealing cover.

[0020] Preferably, the annular filter box comprises:

[0021] An annular box body, wherein the outer side wall of the annular box body is provided with a first water surface line and a second water surface line;

[0022] A plurality of first filter holes, wherein the plurality of first filter holes are arranged in an annular array on the surface of the annular box, and the plurality of first filter holes are located below the first water surface line;

[0023] A plurality of second filter holes, wherein the plurality of second filter holes are arranged in an annular array on the surface of the annular box body, and the plurality of second filter holes are located between the first water surface line and the second water surface line;

[0024] A height adjustment component, the height adjustment component is used to adjust the life buoy;

[0025] When the first filter hole is blocked, the life buoy is moved from the first water surface line to the second water surface line through the height adjustment component, so that the second filter hole enters the sewage to restore the water inlet speed of the annular filter box;

[0026] Specifically, during a long period of sewage discharge, the filter holes of the annular filter box are prone to clogging, resulting in the water intake speed not being able to keep up with the discharge speed of the submersible sewage pump body, which can easily affect the normal use of the submersible sewage pump body. By setting the first water surface line, the second water surface line, the first filter hole and the second filter hole, and by setting a flow meter in the sewage pipe, the sewage discharge flow is calculated. When the sewage discharge volume decreases, the height adjustment component is started to move the lifebuoy originally on the first water surface line to the first water surface line, so that the annular filter box sinks, and the second filter hole is moved into the sewage, so that the sewage enters the annular filter box through the second filter hole, so as to restore the water intake speed of the annular filter box and maintain the normal use of the submersible sewage pump body.

[0027] Preferably, the height adjustment assembly comprises:

[0028] The cylinder is fixedly connected to the second connecting frame, and the bottom end of the telescopic rod of the cylinder passes through the second connecting frame and is fixedly connected to the first connecting frame.

[0029] Preferably, it also includes:

[0030] A plurality of brush plates, each of which is located between two first filter holes, wherein the top of each brush plate is slidably connected to the bottom of each sealing cover, the bottom of each brush plate extends to the inner bottom of each annular filter box, and the outer wall of each brush plate is in contact with the inner wall of each annular filter box;

[0031] A rotary drive mechanism, the rotary drive mechanism is used to drive the annular filter box to rotate;

[0032] During the sinking process of the annular filter box, the annular filter box is rotated by the rotary drive mechanism, and during the rotation process, the sludge blocked in the first filter hole is cleaned by contacting the brush plate;

[0033] Specifically, by providing a brush plate, during the sinking process of the annular filter box, the rotation drive mechanism is started to rotate the annular filter box, and during the rotation process, the first filter hole is brought into contact with the brush plate, and the silt impurities blocked in the first filter hole are brushed by the brush plate to dredge the first filter hole and restore the water inlet speed of the first filter hole;

[0034] After the first filter hole is unblocked, the life buoy is moved to the first water surface line again, so as to separate the second filter hole from the sewage. In the process of separation, the second filter hole is cleaned by the brush plate to maintain the unblockability of the second filter hole. When the life buoy is moved to the first water surface, the life buoy separates the second filter hole from the sewage to prevent splashes in the sewage from contacting the second filter hole.

[0035] Preferably, the rotary drive mechanism comprises:

[0036] Two driving grooves are symmetrically arranged on the outer side wall of the annular box body, and the inner wall of the annular connecting plate is slidably connected in the driving grooves through connecting pins.

[0037] Preferably, the second filter holes are staggered with the first filter holes;

[0038] Specifically, due to the staggered distribution of the first filter hole and the second filter hole, when the lifebuoy is at the first water surface line, the bottom of the brush plate is located between the two first filter holes, and the top of the brush plate seals the second filter hole to prevent sewage from splashing and clogging the second filter hole, thereby reducing the fluidity of the second filter hole.

[0039] Preferably, it also includes:

[0040] A plurality of wave grooves, wherein the wave grooves are arranged on the inner wall of the annular box body at positions corresponding to the positions of the brush plates;

[0041] The outer side wall of the brush plate is slidably connected in the wave groove via a connecting pin;

[0042] Specifically, by setting the wave groove, during the rotation of the annular filter box, the brush plate slides along the wave groove, and driven by the wave groove, the brush plate moves up and down, thereby improving the cleaning ability of the brush plate to the first filter hole and the second filter hole.

[0043] Preferably, the traction assembly comprises:

[0044] Two rollers, the two rollers are symmetrically rotatably connected to the mounting frame;

[0045] A rope, one end of which is wound around the roller and the other end of which is fixedly connected to the top of the sealing cover;

[0046] A motor is fixedly connected to the mounting frame, and an output shaft of the motor is coaxially fixed with the roller to drive the roller to rotate.

[0047] Preferably, the top of the submersible sewage pump body is fixedly connected to the sealing cover via a flange.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] 1. The present invention provides a life buoy and an annular filter box, so that the submersible sewage pump body and the annular filter box can be lowered synchronously with the water level drop. On the one hand, it is beneficial for the submersible sewage pump body to stably pump out sewage. On the other hand, it ensures that the cable interface at the top of the submersible sewage pump body is always above the sewage, reducing the possibility of short circuit caused by contact between the cable interface and the sewage.

[0050] 2. The present invention sets a first water surface line, a second water surface line, a first filter hole and a second filter hole. When the sewage discharge volume decreases, the height adjustment component is started to move the life buoy originally on the first water surface line to the first water surface line, so that the annular filter box sinks, and the second filter hole is moved into the sewage, so that the sewage enters the annular filter box through the second filter hole, so as to restore the water inlet speed of the annular filter box and maintain the normal use of the submersible sewage pump body.

[0051] 3. The present invention sets a brush plate, and when the annular filter box sinks, the rotary drive mechanism is started to rotate the annular filter box. During the rotation, the first filter hole contacts the brush plate, and the silt impurities blocked in the first filter hole are brushed by the brush plate to dredge the first filter hole and restore the water inlet speed of the first filter hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0053] Figure 2 The cross-sectional view of the annular filter box in the present invention Figure 1 ;

[0054] Figure 3 It is a connection diagram of the transport guide rail and the annular filter box in the present invention;

[0055] Figure 4 The cross-sectional view of the annular filter box in the present invention Figure 2 ;

[0056] Figure 5 This is a position diagram of the first water surface line and the second water surface line in the present invention.

[0057] In the figure: mounting frame 1, roller 2, transport guide rail 3, life buoy 4, annular connecting plate 5, first connecting frame 6, annular filter box 7, annular box body 701, first water surface line 702, second water surface line 703, first filter hole 704, second filter hole 705, drive groove 706, wave groove 707, submersible sewage pump body 8, cable interface 801, pumping end 802, drainage end 803, sealing cover 9, second connecting frame 10, cylinder 11, brush plate 12, flange 13, cable 14, motor 15, rope 16. DETAILED DESCRIPTION

[0058] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0059] like Figures 1 to 5 The submersible sewage pump with adaptive water level for a sewage treatment plant shown in the figure comprises:

[0060] A mounting frame 1, the bottom end of which is symmetrically fixedly connected with a transport rail 3;

[0061] The annular filter box 7 is connected to the mounting frame 1 via a traction assembly, and the traction assembly is used to traction and transport the annular filter box 7 into the water;

[0062] A submersible sewage pump body 8, which is arranged in the annular filter box 7 through connecting components;

[0063] A life buoy 4, the inner wall of which is fixedly connected with an annular connecting plate 5, which is slidably connected to the outer wall of an annular filter box 7, the outer wall of which is symmetrically fixedly connected with a first connecting frame 6, which is slidably connected to the transport guide rail 3 at the corresponding position;

[0064] The cable interface 801 at the top of the submersible sewage pump body 8 is located above the life buoy 4, and the bottom end of the pumping end 802 of the submersible sewage pump body 8 extends to the inner bottom end of the annular filter box 7;

[0065] The buoyancy of the life buoy 4 in the sewage ensures that the cable interface 801 at the top of the submersible sewage pump body 8 is always above the sewage, reducing the possibility of short circuit caused by the contact between the cable interface 801 and the sewage;

[0066] Specifically, in the prior art, a steel cable is usually used to transport the submersible sewage pump to the bottom of a sewage pool, and then the sewage in the sewage pool is pumped out by the submersible sewage pump. However, when the sewage in the sewage pool is deep, the entire submersible sewage pump together with the cable interface 801 at the top of the submersible sewage pump will be submerged, and the cable interface 801 at the top of the existing submersible sewage pump is mostly difficult to fully ensure the sealing, which easily leads to the entry of sewage and the problem of tripping. The technical solution can solve the above problem. The specific operation is as follows: first, the installation frame 1 is driven by the external lifting equipment to move the transport guide rail 3 to the designated location in the sewage pool, and then the annular filter box 7 is lowered by the traction component. When the pump reaches the water, the buoy 4 can drive the submersible sewage pump body 8 and the annular filter box 7 to float on the water surface. Since the cable interface 801 at the top of the submersible sewage pump body 8 is located above the life buoy 4, the cable interface 801 at the top of the submersible sewage pump body 8 is always above the sewage, reducing the possibility of short circuit caused by the contact between the cable interface 801 and the sewage. Then, the submersible sewage pump body 8 is started to pump out the sewage in the sewage pool. In the process of sewage discharge, the sewage can be filtered through the filtering effect of the annular filter box 7 to remove larger particles in the sewage, thereby reducing damage to the submersible sewage pump body 8.

[0067] As the sewage is continuously discharged, the water surface line in the sewage pool is lowered, and the life buoy 4 makes the submersible sewage pump body 8 and the annular filter box 7 drop synchronously with the water surface drop. On the one hand, it is beneficial for the submersible sewage pump body 8 to stably pump out the sewage, and on the other hand, it makes the cable interface 801 at the top of the submersible sewage pump body 8 always above the sewage, reducing the possibility of short circuit caused by the contact between the cable interface 801 and the sewage;

[0068] At the same time, a first connecting frame 6 is provided to limit the life buoy 4, to prevent the life buoy 4 from driving the annular filter box 7 to move and float on the sewage pool, and to reduce the possibility of the annular filter box 7 tipping over.

[0069] As a further embodiment of the present invention, the connecting component comprises:

[0070] A sealing cover 9, the top of which is rotatably connected to the top of the annular filter box 7, a second connecting frame 10 is symmetrically fixedly connected to the side wall of the sealing cover 9, and the second connecting frame 10 is slidably connected to the transport guide rail 3 at the corresponding position;

[0071] The top of the submersible sewage pump body 8 is fixedly connected to the bottom of the sealing cover 9, the cable 14 in the submersible sewage pump body 8 passes through the sealing cover 9 and is slidably connected to the sealing cover 9, and the top of the drainage end 803 of the submersible sewage pump body 8 passes through the sealing cover 9 and is fixedly connected to the sealing cover 9;

[0072] Specifically, by providing a sealing cover 9 and a second connecting frame 10, the annular filter box 7 is limited, and the stability of the annular filter box 7 is further increased, so that during the sewage discharge process, the annular filter box 7 moves downward stably following the height of the water surface, reducing the possibility of the annular filter box 7 tipping over.

[0073] As a further embodiment of the present invention, the annular filter box 7 comprises:

[0074] An annular box body 701, wherein the outer side wall of the annular box body 701 is provided with a first water surface line 702 and a second water surface line 703;

[0075] A plurality of first filtering holes 704 , wherein the plurality of first filtering holes 704 are arranged in an annular array on the surface of the annular box 701 , and the plurality of first filtering holes 704 are located below the first water surface line 702 ;

[0076] A plurality of second filter holes 705, wherein the plurality of second filter holes 705 are arranged in an annular array on the surface of the annular box 701, and the plurality of second filter holes 705 are located between the first water surface line 702 and the second water surface line 703;

[0077] A height adjustment component, the height adjustment component is used to adjust the life buoy 4;

[0078] When the first filter hole 704 is blocked, the life buoy 4 is moved from the first water surface line 702 to the second water surface line 703 through the height adjustment component, so that the second filter hole 705 enters the sewage to restore the water inlet speed of the annular filter box 7;

[0079] Specifically, during a long period of sewage discharge, the filter holes of the annular filter box 7 are prone to clogging, resulting in the water intake speed not being able to keep up with the discharge speed of the submersible sewage pump body 8, which is likely to affect the normal use of the submersible sewage pump body 8. By setting the first water surface line 702, the second water surface line 703, the first filter hole 704 and the second filter hole 705, and by setting a flow meter in the sewage pipe, the sewage discharge flow is calculated. When the sewage discharge volume decreases, by starting the height adjustment component, the lifebuoy 4 originally on the first water surface line 702 is moved to the first water surface line 702, so that the annular filter box 7 sinks, and the second filter hole 705 is moved into the sewage, so that the sewage enters the annular filter box 7 through the second filter hole 705, so as to restore the water intake speed of the annular filter box 7 and maintain the normal use of the submersible sewage pump body 8.

[0080] As a further embodiment of the present invention, the height adjustment assembly comprises:

[0081] The cylinder 11 is fixedly connected to the second connecting frame 10, and the bottom end of the telescopic rod of the cylinder 11 passes through the second connecting frame 10 and is fixedly connected to the first connecting frame 6;

[0082] Specifically, by setting the cylinder 11, when the first filter hole 704 is blocked, the cylinder 11 is started to move the telescopic rod of the cylinder 11 upward, so that the lifebuoy 4 moves upward to the second water surface line 703, the annular filter box 7 sinks, and the second filter hole 705 moves into the sewage, so that the sewage enters the annular filter box 7 through the second filter hole 705, so as to restore the water inlet speed of the annular filter box 7 and maintain the normal use of the submersible sewage pump body 8.

[0083] As a further embodiment of the present invention, it also includes:

[0084] Several brush plates 12, which are respectively located between the two first filter holes 704, the top of the brush plate 12 is slidably connected to the bottom of the sealing cover 9, the bottom of the brush plate 12 extends to the inner bottom end of the annular filter box 7, and the outer wall of the brush plate 12 is in contact with the inner wall of the annular filter box 7;

[0085] A rotary drive mechanism, the rotary drive mechanism is used to drive the annular filter box 7 to rotate;

[0086] During the sinking process of the annular filter box 7, the annular filter box 7 is rotated by the rotary drive mechanism, and during the rotation process, the sludge blocked in the first filter hole 704 is cleaned by contacting the brush plate 12;

[0087] Specifically, by providing the brush plate 12, during the sinking process of the annular filter box 7, the rotation drive mechanism is started to rotate the annular filter box 7, and during the rotation process, the first filter hole 704 is brought into contact with the brush plate 12, and the silt impurities blocked in the first filter hole 704 are brushed by the brush plate 12 to dredge the first filter hole 704 and restore the water inlet speed of the first filter hole 704;

[0088] After the first filter hole 704 is cleared, the life buoy 4 is moved back to the first water surface line 702 to separate the second filter hole 705 from the sewage. In the process of separation, the second filter hole 705 is cleaned by the brush plate 12 to maintain the clearness of the second filter hole 705. When the life buoy 4 is moved to the first water surface, the life buoy 4 blocks the second filter hole 705 from the sewage to prevent splashes in the sewage from contacting the second filter hole 705.

[0089] As a further embodiment of the present invention, the rotary drive mechanism comprises:

[0090] Two driving grooves 706, the driving grooves 706 are symmetrically arranged on the outer wall of the annular box body 701, and the inner wall of the annular connecting plate 5 is slidably connected in the driving grooves 706 through a connecting pin;

[0091] Specifically, by setting the driving groove 706, when the life buoy 4 moves upward, the annular connecting plate 5 slides along the driving groove 706, and the driving groove 706 drives the annular filter box 7 to rotate, so that the first filter hole 704 contacts the brush plate 12, the first filter hole 704 is dredged, and the water inlet speed of the first filter hole 704 is restored.

[0092] As a further embodiment of the present invention, the second filter holes 705 and the first filter holes 704 are staggered;

[0093] Specifically, due to the staggered distribution of the first filter hole 704 and the second filter hole 705, when the lifebuoy 4 is at the first water surface line 702, the bottom of the brush plate 12 is located between the two first filter holes 704, and the top of the brush plate 12 seals the second filter hole 705 to prevent sewage from splashing and clogging the second filter hole 705, thereby reducing the fluidity of the second filter hole 705.

[0094] As a further embodiment of the present invention, it also includes:

[0095] A plurality of wave grooves 707 are formed on the inner wall of the annular box 701 corresponding to the positions of the brush plate 12;

[0096] The outer wall of the brush plate 12 is slidably connected in the wave groove 707 through a connecting pin;

[0097] Specifically, by setting the wave groove 707, during the rotation of the annular filter box 7, the brush plate 12 slides along the wave groove 707, and driven by the wave groove 707, the brush plate 12 moves up and down, thereby improving the cleaning ability of the brush plate 12 on the first filter hole 704 and the second filter hole 705.

[0098] As a further embodiment of the present invention, the traction assembly comprises:

[0099] Two rollers 2, the two rollers 2 are symmetrically rotatably connected to the mounting frame 1;

[0100] A rope 16, one end of which is wound around the roller 2, and the other end of which is fixedly connected to the top end 9 of the sealing cover;

[0101] The motor 15 is fixedly connected to the mounting frame 1, and the output shaft of the motor 15 is coaxially fixed with the roller 2 to drive the roller to rotate;

[0102] Specifically, by arranging the roller 2, the rope 16 and the motor 15, the roller 2 is rotated by starting the motor 15, so as to realize the downward movement and retraction of the annular filter box 7.

[0103] As a further embodiment of the present invention, the top of the submersible sewage pump body 8 is fixedly connected to the sealing cover 9 via a flange 13;

[0104] Specifically, the submersible sewage pump body 8 is fixedly connected to the sealing cover 9 by means of the flange 13, so as to facilitate the disassembly of the submersible sewage pump.

[0105] The working principle of the present invention is as follows: first, the installation frame 1 is driven by the external lifting equipment to move the transport guide rail 3 to the designated location in the sewage pool, and then the annular filter box 7 is lowered into the water through the traction assembly. Under the buoyancy of the lifebuoy 4, the lifebuoy 4 can drive the submersible sewage pump body 8 and the annular filter box 7 to float on the water surface. Since the cable interface 801 at the top of the submersible sewage pump body 8 is located above the lifebuoy 4, the cable interface 801 at the top of the submersible sewage pump body 8 is always on the sewage, reducing the possibility of short circuit caused by the contact between the cable interface 801 and the sewage. Then, the submersible sewage pump body 8 is started to pump the sewage in the sewage pool. In the process of sewage discharge, the sewage can be filtered through the filtering effect of the annular filter box 7 to remove larger particles in the sewage, thereby reducing damage to the submersible sewage pump body 8.

[0106] As the sewage is continuously discharged, the water surface line in the sewage pool is lowered, and the life buoy 4 makes the submersible sewage pump body 8 and the annular filter box 7 drop synchronously with the water surface drop. On the one hand, it is beneficial for the submersible sewage pump body 8 to stably pump out the sewage, and on the other hand, it makes the cable interface 801 at the top of the submersible sewage pump body 8 always above the sewage, reducing the possibility of short circuit caused by the contact between the cable interface 801 and the sewage;

[0107] At the same time, a first connecting frame 6 is provided to limit the life buoy 4, to prevent the life buoy 4 from driving the annular filter box 7 to move and float on the sewage pool, and to reduce the possibility of the annular filter box 7 tipping over.

[0108] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A submersible sewage pump with adaptive water level for a sewage treatment plant, characterized in that: include: A mounting frame (1), wherein a transport guide rail (3) is symmetrically fixedly connected to the bottom end of the mounting frame; An annular filter box (7), wherein the annular filter box (7) is connected to the mounting frame (1) via a traction assembly, and the traction assembly is used to traction and transport the annular filter box (7) into the water; A submersible sewage pump body (8), wherein the submersible sewage pump body (8) is arranged in the annular filter box (7) via a connecting component; A life buoy (4), wherein an annular connecting plate (5) is fixedly connected to the inner wall of the life buoy (4), wherein the annular connecting plate (5) is slidably connected to the outer wall of the annular filter box (7), wherein a first connecting frame (6) is symmetrically fixedly connected to the outer wall of the annular connecting plate (5), and wherein the first connecting frame (6) is slidably connected to the transport guide rail (3) at a corresponding position; The cable interface (801) at the top of the submersible sewage pump body (8) is located above the life buoy (4), and the bottom end of the water pump end (802) of the submersible sewage pump body (8) extends to the inner bottom end of the annular filter box (7); The buoyancy of the life buoy (4) in the sewage ensures that the cable interface (801) at the top of the submersible sewage pump body (8) is always above the sewage, thereby reducing the possibility of a short circuit caused by the contact between the cable interface (801) and the sewage.

2. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 1, characterized in that: The connecting component comprises: A sealing cover (9), the top end of the sealing cover (9) is rotatably connected to the top end of the annular filter box (7), the side wall of the sealing cover (9) is symmetrically fixedly connected to a second connecting frame (10), and the second connecting frame (10) is slidably connected to the transport guide rail (3) at a corresponding position; The top end of the submersible sewage pump body (8) is fixedly connected to the bottom end of the sealing cover (9); the cable (14) in the submersible sewage pump body (8) passes through the sealing cover (9) and is slidably connected to the sealing cover (9); the top end of the drainage end (803) of the submersible sewage pump body (8) passes through the sealing cover (9) and is fixedly connected to the sealing cover (9).

3. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 2, characterized in that: The annular filter box (7) comprises: An annular box body (701), wherein an outer side wall of the annular box body (701) is provided with a first water surface line (702) and a second water surface line (703); A plurality of first filtering holes (704), wherein the plurality of first filtering holes (704) are arranged in an annular array on the surface of the annular box (701), and the plurality of first filtering holes (704) are located below the first water surface line (702); A plurality of second filtering holes (705), wherein the plurality of second filtering holes (705) are arranged in an annular array on the surface of the annular box (701), and the plurality of second filtering holes (705) are located between the first water surface line (702) and the second water surface line (703); A height adjustment component, the height adjustment component is used to adjust the life buoy (4); When the first filter hole (704) is clogged, the life buoy (4) is moved from the first water surface line (702) to the second water surface line (703) through the height adjustment component, so that the second filter hole (705) enters the sewage to restore the water inlet speed of the annular filter box (7).

4. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 3, characterized in that: The height adjustment assembly comprises: A cylinder (11), wherein the cylinder (11) is fixedly connected to the second connecting frame (10), and the bottom end of the telescopic rod of the cylinder (11) passes through the second connecting frame (10) and is fixedly connected to the first connecting frame (6).

5. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 2, characterized in that: Also includes: A plurality of brush plates (12), wherein the plurality of brush plates (12) are respectively located between the two first filter holes (704), the top end of the brush plate (12) is slidably connected to the bottom end of the sealing cover (9), the bottom end of the brush plate (12) extends to the inner bottom end of the annular filter box (7), and the outer wall of the brush plate (12) is in contact with the inner wall of the annular filter box (7); A rotary drive mechanism, the rotary drive mechanism being used to drive the annular filter box (7) to rotate; During the sinking process of the annular filter box (7), the annular filter box (7) is rotated by means of a rotary drive mechanism, and during the rotation process, the sludge clogged in the first filter hole (704) is cleaned through contact with the brush plate (12).

6. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 5, characterized in that: The rotary drive mechanism comprises: Two driving grooves (706) are symmetrically arranged on the outer wall of the annular box body (701), and the inner wall of the annular connecting plate (5) is slidably connected to the driving grooves (706) via connecting pins.

7. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 3, characterized in that: The second filter holes (705) and the first filter holes (704) are distributed in a staggered manner.

8. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 5, characterized in that: Also includes: A plurality of wave grooves (707), wherein the plurality of wave grooves (707) are formed on the inner wall of the annular box body (701) at positions corresponding to the positions of the brush plate (12); The outer side wall of the brush plate (12) is slidably connected in the wave groove (707) via a connecting pin.

9. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 2, characterized in that: The traction assembly comprises: Two rollers (2), the two rollers (2) being symmetrically rotatably connected to the mounting frame (1); a rope (16), one end of the rope (16) being wound around the roller (2) and the other end of the rope being fixedly connected to the top end (9) of the sealing cover; A motor (15), wherein the motor (15) is fixedly connected to the mounting frame (1), and an output shaft of the motor (15) is coaxially fixed with the roller (2) for driving the roller to rotate.

10. The self-adaptive water level submersible sewage pump for a sewage treatment plant according to claim 2, characterized in that: The top end of the submersible sewage pump body (8) is fixedly connected to the sealing cover (9) via a flange (13).

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