Mud scraping device for water pollution control

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sludge scraping device for water pollution treatment, which comprises a sewage treatment tank, a sludge discharge pipe, a water inlet pipe, a water outlet pipe, a sludge discharge pipe, a water outlet pipe, a sludge discharge pipe and a sludge discharge pipe, and is characterized in that the water inlet pipe is fixedly communicated with the front side of the sewage treatment tank, and the water outlet pipe is fixedly communicated with the water outlet pipe; the sludge discharge pipe is fixedly communicated with the bottom of the sewage treatment tank; the number of the electric push rods is two, and the two electric push rods are fixedly mounted on the left side and the right side of the sewage treatment tank; height adjustment and transverse reciprocating motion of the upper scraping plate and the lower scraping plate are achieved through a simple structure, efficient cleaning of sludge in the sewage treatment tank can be guaranteed, meanwhile, the situation that when the upper scraping plate and the lower scraping plate reset, the sludge and sewage are brought back when the lower scraping plate resets is avoided, and the sludge and the sewage can be effectively cleaned. The cleaning effect on sludge in the sewage treatment tank is guaranteed, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a sludge scraping device for water pollution control. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. In the sewage treatment process, solids in the sewage need to be precipitated to ensure the effect of sewage treatment. After precipitation and aggregation, the sludge accumulated at the bottom needs to be discharged.

[0003] In the prior art, the existing scraper device cannot guarantee the scraping effect well when scraping. When scraping the sludge, the sludge is easy to flow to the rear side of the scraper device, affecting the scraping effect. At the same time, the scraper device is also easy to bring back the sludge when retreating. The use effect is general. For this reason, the present application proposes a scraper device for water pollution control to solve the above problems. Summary of the invention

[0004] Based on the technical problem that the existing scraper device in the background technology cannot guarantee the scraping effect well when scraping mud, and when scraping the sludge, the sludge is easy to flow to the back side of the scraper device, affecting the scraping effect, and it is also easy to bring back the sludge when the scraper device retreats, resulting in a general use effect, the present invention proposes a scraper device for water pollution control.

[0005] The present invention provides a sludge scraper device for water pollution control, comprising a sewage treatment tank, wherein the front side of the sewage treatment tank is fixedly connected to a water inlet pipe, and the right side of the sewage treatment tank is fixedly connected to a drain pipe. The sludge scraper device also includes:

[0006] A sludge discharge pipe, wherein the sludge discharge pipe is fixedly connected to the bottom of the sewage treatment tank;

[0007] Two electric push rods are provided, and both of the two electric push rods are fixedly installed on the left and right sides of the sewage treatment tank;

[0008] Two L-shaped lifting plates are provided, and the bottom of the L-shaped lifting plates is fixedly mounted on the output shaft of the corresponding electric push rod;

[0009] A support frame, the bottom ends of which are respectively fixedly mounted on the bottoms of two L-shaped lifting plates;

[0010] A driving motor, wherein the driving motor is fixedly installed on the right side of the support frame, an output shaft of the driving motor passes through the right side of the support frame and is fixedly installed with a screw rod, the left end of the screw rod is rotatably connected to the left inner wall of the support frame, a moving block is provided on the threaded sleeve of the screw rod, a connecting plug is fixedly installed on the bottom end of the moving block, an upper scraper is detachably inserted in the interior of the connecting plug, and a lower scraper is provided on the sliding sleeve of the bottom end of the upper scraper;

[0011] A card assembly, which is arranged on the connecting plug and matches with the upper scraper;

[0012] The limiting component is arranged on the moving block, and the limiting component cooperates with the clamping component.

[0013] By means of the above structure, starting the electric push rod can drive the two L-shaped lifting plates, the support frame, the driving motor, the screw rod, the moving block, the connecting pipe, the upper scraper, the lower scraper and the clamping assembly to adjust the height, so that the distance between the lower scraper and the bottom inner wall of the sewage treatment tank can be adjusted. When moving downward, it can ensure that the bottom end of the lower scraper is in stable contact with the bottom inner wall of the sewage treatment tank and scrape the mud. When moving upward, the bottom end of the lower scraper can be kept away from the bottom inner wall of the sewage treatment tank, so that the lower scraper can be easily reset to the right to avoid bringing back the sludge and sewage when the lower scraper is reset, thereby ensuring the cleaning effect of the sludge inside the sewage treatment tank. In addition, starting the driving motor can drive the screw rod to rotate. At this time, through the threaded connection between the screw rod and the moving block, the connecting pipe, the upper scraper and the lower scraper can be driven to move back and forth horizontally, thereby realizing efficient cleaning operations inside the sewage treatment tank.

[0014] Preferably, an electrically controlled valve is fixedly installed inside the sludge discharge pipe.

[0015] Furthermore, by setting an electrically controlled valve, the sludge discharge pipe can be switched on and off, thereby facilitating the discharge of sludge.

[0016] Preferably, telescopic rods are fixedly installed on the left and right sides of the sewage treatment tank, the number of telescopic rods is four, and the top ends of the two telescopic rods on the same side are fixedly installed on the bottom of the corresponding L-shaped lifting plate.

[0017] Furthermore, by providing a telescopic rod, the L-shaped lifting plate can be stably lifted and lowered to support the lifting, thereby ensuring the stability of the screw rod, the moving block, the connecting pipe, the upper scraper and the lower scraper.

[0018] Preferably, a stabilizing rod is fixedly installed on one side of the two L-shaped lifting plates close to each other, the number of the stabilizing rods is two, and the moving blocks are slidably sleeved on the two stabilizing rods respectively.

[0019] Furthermore, by providing a stabilizing rod, the movable block can be stably supported for lateral movement, thereby ensuring the stability of the connecting pipe, the upper scraper and the lower scraper when scraping mud.

[0020] Preferably, a plurality of first springs are fixedly mounted on the inner wall of the bottom of the lower scraper plate, and the top ends of the plurality of first springs are fixedly mounted on the bottom end of the upper scraper plate.

[0021] Furthermore, by arranging the first spring, stable elastic support can be provided between the upper scraper and the lower scraper. When there is a lot of sludge and the lower scraper encounters a large resistance, the lower scraper can be moved up and contracted a small amount to avoid deformation and damage of the lower scraper. Here, the contraction distance of the first spring is shorter, and therefore the lower scraper will not be moved up too much, so the upper sludge can be scraped once, and then the lower scraper can be moved to the right and reset to perform a second scraping. Thus, the sludge can be completely removed through multiple scrapings, and the lower scraper can be protected from damage, thereby increasing its service life.

[0022] Preferably, the clamping assembly includes two positioning tubes, two rectangular sliding rods, two movable plates and two positioning rods. The two positioning tubes are respectively fixedly mounted on the left and right sides of the upper scraper plate, and the ends of the two rectangular sliding rods close to each other are respectively fixedly mounted on the left and right sides of the connecting plug. The movable plate is slidably sleeved on the corresponding rectangular sliding rods, and the two positioning rods are respectively fixedly mounted on the sides of the two movable plates close to each other, and the ends of the two positioning rods close to each other can be detached and inserted into the two positioning tubes.

[0023] Furthermore, through the plug-in limit between the upper scraper and the connecting tube, and then through the plug-in cooperation between two rectangular sliding rods, two movable plates and two positioning rods and two positioning tubes, the upper scraper and the lower scraper can be quickly disassembled and assembled, thereby facilitating the disassembly, cleaning or replacement of the upper scraper and the lower scraper, and facilitating subsequent maintenance.

[0024] Preferably, the two rectangular slide bars are both sleeved with second springs, the ends of the two second springs close to each other are respectively fixedly mounted on the sides of the two movable plates away from each other, and the ends of the two second springs away from each other are respectively fixedly mounted on the two rectangular slide bars.

[0025] Furthermore, by providing a second spring, the movable plate and the positioning rod can be driven to move and reset.

[0026] Preferably, the limit assembly includes a limit cover, a fixed plate and a plurality of third springs, the limit cover is slidably mounted on the moving block, the fixed plate is fixedly mounted on the moving block, the bottom ends of the plurality of third springs are fixedly mounted on the top of the limit cover, the top ends of the plurality of third springs are fixedly mounted on the bottom of the fixed plate, and the top ends of the two moving plates can be detached and inserted into the interior of the limit cover.

[0027] Furthermore, by driving the limit cover downward and resetting through the third spring, the limit cover can wrap and fix the two movable plates, thereby limiting the two movable plates from moving away from each other, ensuring the clamping stability between the two positioning rods and the two positioning tubes, thereby improving the plug-in stability between the upper scraper and the connecting tube.

[0028] The beneficial effects of the present invention are:

[0029] 1. By starting the electric push rod, the two L-shaped lifting plates, the support frame, the drive motor, the screw, the moving block, the connecting plug, the upper scraper, the lower scraper and the clamping assembly can be driven to adjust the height, so as to adjust the distance between the lower scraper and the bottom inner wall of the sewage treatment tank. When moving downward, the bottom end of the lower scraper can be ensured to be in stable contact with the bottom inner wall of the sewage treatment tank and scrape the mud. When moving upward, the bottom end of the lower scraper can be kept away from the bottom inner wall of the sewage treatment tank, so as to facilitate the rightward reset of the lower scraper, avoid bringing back the sludge and sewage when the lower scraper is reset, and ensure the cleaning effect of the sludge inside the sewage treatment tank.

[0030] 2. By starting the driving motor, the screw rod can be driven to rotate. At this time, the threaded connection between the screw rod and the moving block can drive the connecting pipe, the upper scraper and the lower scraper to move back and forth horizontally, thereby realizing efficient cleaning operation inside the sewage treatment tank;

[0031] 3. By setting the first spring, the upper scraper and the lower scraper can be stably elastically supported. When there is a lot of sludge and the lower scraper is subject to greater resistance, the lower scraper can be moved up and contracted slightly to avoid deformation and damage of the lower scraper. Here, the contraction distance of the first spring is short, so the lower scraper will not move up too much, and the upper sludge can be scraped once, and then the lower scraper is moved right and reset to scrape the sludge for the second time, so that the sludge can be completely removed through multiple scrapings and the lower scraper will not be damaged, thereby increasing the service life;

[0032] 4. Through the plug-in limit between the upper scraper and the connecting plug tube, and then through the plug-in cooperation between the two rectangular slide bars, the two moving plates and the two positioning rods and the two positioning tubes, the upper scraper and the lower scraper can be quickly disassembled and assembled, so as to facilitate the disassembly, cleaning or replacement of the upper scraper and the lower scraper, and facilitate subsequent maintenance;

[0033] 5. The third spring drives the limit cover to move downward and reset, so that the limit cover can cover and fix the two movable plates, which can limit the two movable plates from moving away from each other, ensure the clamping stability between the two positioning rods and the two positioning tubes, and thus improve the plugging stability between the upper scraper and the connecting plug;

[0034] The present invention realizes the height adjustment and lateral reciprocating motion of the upper scraper and the lower scraper through a simple structure, which can ensure the efficient cleaning of the sludge inside the sewage treatment tank. At the same time, when the upper scraper and the lower scraper are reset, the sludge and sewage will not be brought back by the lower scraper when the upper scraper and the lower scraper are reset, thereby ensuring the cleaning effect of the sludge inside the sewage treatment tank, and the invention has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural front view of a sludge scraper device for water pollution control proposed by the present invention;

[0036] Figure 2 This is a main cross-sectional view of the structure of a mud scraper device for water pollution control proposed by the present invention;

[0037] Figure 3 The invention provides an attachment for a sludge scraping device for water pollution control. Figure 2 The structural diagram of part A in the figure;

[0038] Figure 4 This is a left side view of the structure of a mud scraper device for water pollution control proposed by the present invention;

[0039] Figure 5 This is a three-dimensional structural diagram of an upper scraper, a lower scraper and a positioning pipe of a sludge scraper device for water pollution control proposed by the present invention.

[0040] In the figure: 1. sewage treatment tank; 2. water inlet pipe; 3. drainage pipe; 4. sludge discharge pipe; 5. electric control valve; 6. electric push rod; 7. telescopic rod; 8. L-shaped lifting plate; 9. support frame; 10. driving motor; 11. screw rod; 12. moving block; 13. stabilizing rod; 14. connecting plug; 15. upper scraper; 16. lower scraper; 17. first spring; 18. positioning tube; 19. rectangular sliding rod; 20. moving plate; 21. positioning rod; 22. second spring; 23. limit cover; 24. fixed plate; 25. third spring. DETAILED DESCRIPTION

[0041] The present invention will be further explained below in conjunction with specific embodiments.

[0042] refer to Figure 1-Figure 5 In this embodiment, a scraper device for water pollution control is proposed, including a sewage treatment tank 1, a water inlet pipe 2 is fixedly connected to the front side of the sewage treatment tank 1, and a drain pipe 3 is fixedly connected to the right side of the sewage treatment tank 1. The scraper device also includes:

[0043] A sludge discharge pipe 4, wherein the sludge discharge pipe 4 is fixedly connected to the bottom of the sewage treatment tank 1;

[0044] Two electric push rods 6 are provided, and the two electric push rods 6 are fixedly installed on the left and right sides of the sewage treatment tank 1;

[0045] Two L-shaped lifting plates 8 are provided, and the bottom of the L-shaped lifting plates 8 is fixedly mounted on the output shaft of the corresponding electric push rod 6;

[0046] A support frame 9, wherein both ends of the bottom of the support frame 9 are respectively fixedly mounted on the bottom of two L-shaped lifting plates 8;

[0047] A driving motor 10, wherein the driving motor 10 is fixedly mounted on the right side of the supporting frame 9, the output shaft of the driving motor 10 passes through the right side of the supporting frame 9 and is fixedly mounted with a screw rod 11, the left end of the screw rod 11 is rotatably connected to the left inner wall of the supporting frame 9, a moving block 12 is threadedly sleeved on the screw rod 11, a connecting plug 14 is fixedly mounted on the bottom end of the moving block 12, an upper scraper 15 is detachably inserted inside the connecting plug 14, and a lower scraper 16 is slidably sleeved on the bottom end of the upper scraper 15;

[0048] A card assembly, which is arranged on the connecting plug 14 and matches with the upper scraper 15;

[0049] The limiting component is arranged on the moving block 12, and the limiting component cooperates with the clamping component.

[0050] By means of the above structure, the two L-shaped lifting plates 8, the support frame 9, the drive motor 10, the screw rod 11, the moving block 12, the connecting pipe 14, the upper scraper 15, the lower scraper 16 and the clamping assembly can be driven to adjust the height by starting the electric push rod 6, so that the spacing between the lower scraper 16 and the bottom inner wall of the sewage treatment tank 1 can be adjusted. When moving downward, the bottom end of the lower scraper 16 can be ensured to be in stable contact with the bottom inner wall of the sewage treatment tank 1 and achieve mud scraping. When moving upward, the bottom end of the lower scraper 16 can be ensured to be in stable contact with the bottom inner wall of the sewage treatment tank 1. The bottom inner wall of the water treatment tank 1 is far away, so that the lower scraper 16 can be easily moved to the right and reset, avoiding the sludge and sewage being brought back when the lower scraper 16 is reset, thereby ensuring the cleaning effect of the sludge inside the sewage treatment tank 1. In addition, by starting the drive motor 10, the screw rod 11 can be driven to rotate. At this time, through the threaded connection between the screw rod 11 and the moving block 12, the connecting pipe 14, the upper scraper 15 and the lower scraper 16 can be driven to move back and forth laterally, thereby realizing efficient cleaning operation of the inside of the sewage treatment tank 1.

[0051] In this embodiment, an electrically controlled valve 5 is fixedly installed inside the sludge discharge pipe 4. By providing the electrically controlled valve 5, the sludge discharge pipe 4 can be opened and closed, so that the sludge can be discharged conveniently.

[0052] In this embodiment, telescopic rods 7 are fixedly installed on the left and right sides of the sewage treatment tank 1. There are four telescopic rods 7. The top ends of the two telescopic rods 7 on the same side are fixedly installed on the bottom of the corresponding L-shaped lifting plate 8. By setting the telescopic rods 7, the L-shaped lifting plate 8 can be stably lifted and supported, thereby ensuring the stability of the screw rod 11, the moving block 12, the connecting pipe 14, the upper scraper 15 and the lower scraper 16.

[0053] In this embodiment, a stabilizing rod 13 is fixedly installed on one side of the two L-shaped lifting plates 8 that are close to each other. There are two stabilizing rods 13, and the moving blocks 12 are slidably mounted on the two stabilizing rods 13 respectively. By setting the stabilizing rod 13, the moving blocks 12 can be stably supported for lateral movement, thereby ensuring the stability of the connecting pipe 14, the upper scraper 15 and the lower scraper 16 when scraping mud.

[0054] In this embodiment, a plurality of first springs 17 are fixedly mounted on the inner wall at the bottom of the lower scraper 16, and the top ends of the plurality of first springs 17 are fixedly mounted on the bottom end of the upper scraper 15. By providing the first springs 17, stable elastic support can be provided between the upper scraper 15 and the lower scraper 16, so that when there is a lot of sludge and the lower scraper 16 is subject to a large resistance, the lower scraper 16 can be moved up and contracted a small amount to avoid deformation and damage of the lower scraper 16. Here, the contraction distance of the first spring 17 is short, so the lower scraper 16 will not move up too much, so that the upper layer of sludge can be scraped once, and then the lower scraper 16 can be moved right and reset to perform a second scraping, so that the sludge can be completely removed through multiple scrapings and the lower scraper 16 can be protected from damage, thereby improving the service life.

[0055] In this embodiment, the clamping assembly includes two positioning tubes 18, two rectangular sliding bars 19, two movable plates 20 and two positioning rods 21. The two positioning tubes 18 are respectively fixedly mounted on the left and right sides of the upper scraper 15, and the ends of the two rectangular sliding bars 19 close to each other are respectively fixedly mounted on the left and right sides of the connecting plug 14. The movable plate 20 is slidably sleeved on the corresponding rectangular sliding bars 19. The two positioning rods 21 are respectively fixedly mounted on the sides of the two movable plates 20 close to each other. The ends of the two positioning rods 21 close to each other can be detached from and plugged into the two positioning tubes 18. Through the plug-in limit between the upper scraper 15 and the connecting plug 14, and then through the plug-in cooperation between the two rectangular sliding bars 19, the two movable plates 20 and the two positioning rods 21 and the two positioning tubes 18, the upper scraper 15 and the lower scraper 16 can be quickly disassembled and assembled, thereby facilitating the disassembly, cleaning or replacement of the upper scraper 15 and the lower scraper 16, and facilitating subsequent maintenance.

[0056] In this embodiment, the two rectangular slide bars 19 are both provided with second springs 22, and the ends of the two second springs 22 that are close to each other are respectively fixedly mounted on the sides of the two movable plates 20 that are away from each other, and the ends of the two second springs 22 that are away from each other are respectively fixedly mounted on the two rectangular slide bars 19. By setting the second springs 22, the movable plate 20 and the positioning rod 21 can be driven to move and reset.

[0057] In this embodiment, the limit assembly includes a limit cover 23, a fixed plate 24 and a plurality of third springs 25. The limit cover 23 is slidably mounted on the moving block 12, and the fixed plate 24 is fixedly mounted on the moving block 12. The bottom ends of the plurality of third springs 25 are fixedly mounted on the top of the limit cover 23, and the top ends of the plurality of third springs 25 are fixedly mounted on the bottom of the fixed plate 24. The top ends of the two moving plates 20 can be detached from and plugged into the inside of the limit cover 23. The limit cover 23 is driven by the third spring 25 to move down and reset, so that the limit cover 23 can cover and fix the two moving plates 20, and can limit the two moving plates 20 from moving away from each other, thereby ensuring the clamping stability between the two positioning rods 21 and the two positioning tubes 18, thereby improving the plug-in stability between the upper scraper 15 and the connecting plug 14.

[0058] It should be noted that the specific type of the electric control valve 5, the electric push rod 6 and the drive motor 10 to be used is selected by the relevant technical personnel familiar with the field, and the above electric control valve 5, the electric push rod 6 and the drive motor 10 are all existing technologies and will not be elaborated in this solution.

[0059] Working principle: When in use, first connect the electric control valve 5, the electric push rod 6 and the drive motor 10 to the external power supply, and then start the electric push rod 6 to drive the two L-shaped lifting plates 8, the support frame 9, the drive motor 10, the screw rod 11, the moving block 12, the connecting plug 14, the upper scraper 15, the lower scraper 16 and the clamping assembly to adjust the height, so as to adjust the distance between the lower scraper 16 and the bottom inner wall of the sewage treatment tank 1. When moving downward, it can ensure that the bottom end of the lower scraper 16 is in stable contact with the bottom inner wall of the sewage treatment tank 1 and scrape the mud. When moving upward, it can make the bottom end of the lower scraper 16 The bottom inner wall of the sewage treatment tank 1 is far away, so that the lower scraper 16 can be easily moved to the right and reset, so as to avoid the sludge and sewage being brought back when the lower scraper 16 is reset, thereby ensuring the cleaning effect of the sludge inside the sewage treatment tank 1. In addition, by starting the driving motor 10, the screw rod 11 can be driven to rotate. At this time, the threaded connection between the screw rod 11 and the moving block 12 can drive the connecting pipe 14, the upper scraper 15 and the lower scraper 16 to move back and forth horizontally, thereby realizing the efficient cleaning operation inside the sewage treatment tank 1. Here, the first spring 17 can be set to adjust the space between the upper scraper 15 and the lower scraper 16. Stable elastic support can be provided, and when there is a lot of sludge and the lower scraper 16 is subject to greater resistance, the lower scraper 16 can be moved up and contracted a small amount to avoid deformation and damage of the lower scraper 16. Here, the contraction distance of the first spring 17 is short, so the lower scraper 16 will not move up too much, and the upper sludge can be scraped once, and then the lower scraper 16 is moved right and reset to scrape the sludge twice, so that the sludge can be completely removed through multiple scrapings and the lower scraper 16 will not be damaged, thereby improving the service life. Finally, through the plug-in limit between the upper scraper 15 and the connecting plug 14, and then through the two rectangular slide bars 19. The plug-in cooperation between the two movable plates 20 and the two positioning rods 21 and the two positioning tubes 18 can realize the rapid disassembly and assembly of the upper scraper 15 and the lower scraper 16, so as to facilitate the disassembly and assembly, cleaning or replacement of the upper scraper 15 and the lower scraper 16, and facilitate subsequent maintenance. The third spring 25 drives the limit cover 23 to move down and reset, so that the limit cover 23 can cover and fix the two movable plates 20, and can limit the two movable plates 20 from moving away from each other, thereby ensuring the clamping stability between the two positioning rods 21 and the two positioning tubes 18, thereby improving the plug-in stability between the upper scraper 15 and the connecting plug 14.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sludge scraping device for water pollution control, comprising a sewage treatment tank (1), wherein the front side of the sewage treatment tank (1) is fixedly connected to a water inlet pipe (2), and the right side of the sewage treatment tank (1) is fixedly connected to a drain pipe (3), characterized in that: The scraper device also includes: A sludge discharge pipe (4), wherein the sludge discharge pipe (4) is fixedly connected to the bottom of the sewage treatment tank (1); An electric push rod (6), which is provided in two pieces, and the two electric push rods (6) are fixedly installed on the left and right sides of the sewage treatment tank (1); Two L-shaped lifting plates (8) are provided, and the bottom of the L-shaped lifting plates (8) is fixedly mounted on the output shaft of the corresponding electric push rod (6); A support frame (9), wherein two ends of the bottom of the support frame (9) are respectively fixedly mounted on the bottoms of two L-shaped lifting plates (8); A driving motor (10), wherein the driving motor (10) is fixedly mounted on the right side of the supporting frame (9), an output shaft of the driving motor (10) passes through the right side of the supporting frame (9) and is fixedly mounted with a screw rod (11), the left end of the screw rod (11) is rotatably connected to the left inner wall of the supporting frame (9), a moving block (12) is threadedly sleeved on the screw rod (11), a connecting plug (14) is fixedly mounted on the bottom end of the moving block (12), an upper scraper (15) is detachably inserted inside the connecting plug (14), and a lower scraper (16) is slidably sleeved on the bottom end of the upper scraper (15); A card-mounted assembly, the card-mounted assembly being arranged on the connecting plug (14), and the card-mounted assembly being matched with the upper scraper (15); A limit assembly is provided on the moving block (12), and the limit assembly cooperates with the clamping assembly.

2. A sludge scraping device for water pollution control according to claim 1, characterized in that: An electric control valve (5) is fixedly installed inside the sludge discharge pipe (4).

3. A sludge scraping device for water pollution control according to claim 1, characterized in that: Telescopic rods (7) are fixedly installed on the left and right sides of the sewage treatment pool (1), and there are four telescopic rods (7). The top ends of the two telescopic rods (7) on the same side are fixedly installed on the bottom of the corresponding L-shaped lifting plate (8).

4. A sludge scraping device for water pollution control according to claim 1, characterized in that: A stabilizing rod (13) is fixedly installed on one side of the two L-shaped lifting plates (8) close to each other. There are two stabilizing rods (13), and the moving blocks (12) are respectively slidably sleeved on the two stabilizing rods (13).

5. The sludge scraping device for water pollution control according to claim 1, characterized in that: A plurality of first springs (17) are fixedly mounted on the inner wall of the bottom of the lower scraper (16), and the top ends of the plurality of first springs (17) are fixedly mounted on the bottom end of the upper scraper (15).

6. The sludge scraping device for water pollution control according to claim 1, characterized in that: The clamping assembly comprises two positioning tubes (18), two rectangular sliding rods (19), two movable plates (20) and two positioning rods (21); the two positioning tubes (18) are respectively fixedly mounted on the left and right sides of the upper scraper (15); the ends of the two rectangular sliding rods (19) close to each other are respectively fixedly mounted on the left and right sides of the connecting plug tube (14); the movable plate (20) is slidably sleeved on the corresponding rectangular sliding rods (19); the two positioning rods (21) are respectively fixedly mounted on the sides of the two movable plates (20) close to each other; the ends of the two positioning rods (21) close to each other can be detached and inserted into the two positioning tubes (18).

7. A sludge scraping device for water pollution control according to claim 6, characterized in that: The two rectangular slide bars (19) are both sleeved with a second spring (22), and the ends of the two second springs (22) that are close to each other are respectively fixedly mounted on the sides of the two moving plates (20) that are away from each other, and the ends of the two second springs (22) that are away from each other are respectively fixedly mounted on the two rectangular slide bars (19).

8. The sludge scraping device for water pollution control according to claim 6, characterized in that: The limiting assembly comprises a limiting cover (23), a fixing plate (24) and a plurality of third springs (25); the limiting cover (23) is slidably sleeved on the moving block (12); the fixing plate (24) is fixedly sleeved on the moving block (12); the bottom ends of the plurality of third springs (25) are fixedly mounted on the top of the limiting cover (23); the top ends of the plurality of third springs (25) are fixedly mounted on the bottom of the fixing plate (24); and the top ends of the two moving plates (20) can be detached and inserted into the interior of the limiting cover (23).

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