A sludge extraction device for sewage treatment

Abstract

The present invention discloses a sludge extraction device for sewage treatment, which belongs to the technical field of sludge extraction. The invention includes a frame, a support foot is fixedly connected to the lower side of the frame, two symmetrical first support frames are installed on the upper side of the frame, a sludge pump is installed on one side of the frame, a slider mounting frame is sleeved on the side of the first support frame away from the frame, and is slidably connected to the first support frame, a driving member is installed on one side of the slider mounting frame, an electric slider is slidably connected to the slider mounting frame, a dredging assembly is installed on the electric slider, one side of the dredging assembly is connected to the sludge pump through a hose, and the driving member rotates to make the slider mounting frame slide downward along the first support frame, so that the dredging assembly contacts the sludge and is inserted into it. During the insertion process, the dredging assembly will rotate, stir the sludge to make it evenly distributed, and break up larger mud blocks, so that the sludge pump can extract the sludge more effectively.

Description

Technical Field

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

[0002] The purpose of extracting sludge is to reduce the content of organic matter and suspended solids in sewage and improve the sewage treatment effect. The organic matter and microorganisms contained in the sludge will consume a lot of oxygen, causing eutrophication of water bodies and affecting water quality. By extracting sludge, the concentration of these substances can be effectively reduced, reducing water pollution. In addition, sludge may also contain heavy metals and harmful substances, which will threaten the environment and human health if not treated in time. Therefore, extracting sludge is an important part of the sewage treatment process, which helps to achieve standard sewage discharge and environmental protection.

[0003] At present, the method of sludge extraction mainly relies on a sludge pump to extract the sludge in the sewage through a hose. However, in this process, large pieces of sludge or harder sludge are often encountered, which makes extraction difficult and may even cause pipeline blockage, thereby reducing the extraction efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a sludge extraction device for sewage treatment, which has the advantage of being able to extract large sludge or harder sludge, thereby solving the problems existing in the prior art.

[0005] The present invention is implemented as follows: a sludge extraction device for sewage treatment comprises a frame, a support leg is fixedly connected to the lower side of the frame, two symmetrical first support frames are installed on the upper side of the frame, a sludge pump is installed on one side of the frame, and a slider mounting frame is sleeved on one side of the first support frame away from the frame and is slidably connected to the first support frame;

[0006] A driving member is installed on one side of the slider mounting frame;

[0007] The slider mounting frame is slidably connected to an electric slider, and a dredging component is installed on the electric slider;

[0008] One side of the dredging component is connected to the mud pump through a hose.

[0009] As a preferred embodiment of the present invention, the dredging assembly includes two symmetrical sludge stirring shafts, and the sludge stirring shafts are both rotatably connected to the electric slider;

[0010] The sludge stirring shaft is provided with a first channel.

[0011] As a preferred embodiment of the present invention, the dredging assembly further comprises a plurality of fixed cylinders, wherein the fixed cylinders are fixedly connected to the outer wall of the sludge stirring shaft;

[0012] An elastic ejector rod is slidably connected in the fixed cylinder and is capable of contacting the inner wall of the first channel;

[0013] One end of the elastic push rod is fixedly connected with a crushing blade.

[0014] As a preferred embodiment of the present invention, the inner wall of the first channel is made of rubber material.

[0015] As a preferred embodiment of the present invention, one end of the sludge stirring shaft close to the electric slider is fixedly connected to a first driven sprocket, and a second driving sprocket is installed between the two first driven sprockets;

[0016] The second driving sprocket is connected to the two first driven sprockets via a chain;

[0017] A second rotating shaft is installed on the axial center of the second driving sprocket, and a sprocket driving motor is installed on one end of the second rotating shaft.

[0018] As a preferred embodiment of the present invention, the driving member includes a screw rod, the screw rod is located on one side of the first support frame, the screw rod is connected to the slider mounting frame through a thread, and a screw rod driving motor is installed at one end of the screw rod.

[0019] As a preferred embodiment of the present invention, the fixed cylinders are evenly distributed on the sludge stirring shaft.

[0020] As a preferred embodiment of the present invention, an electric slide plate is slidably connected to one side of the first support frame close to the sludge stirring shaft;

[0021] A liquid outlet pipe that can be aligned with the first channel is fixedly connected to the lower side of the electric slide;

[0022] The electric skateboard is connected with a control terminal via a signal.

[0023] As a preferred embodiment of the present invention, a height sensor is installed on one side of the first support frame close to the slider mounting frame;

[0024] A limit switch capable of contacting the electric skateboard is installed on the first support frame, and both the height sensor and the limit switch are connected to the control terminal by signals.

[0025] As a preferred embodiment of the present invention, open frames are installed at the corners around the frame, and fixed rods are slidably connected in the open frames, and the fixed rods penetrate the frame;

[0026] A sleeve is fixedly connected to the top of the open frame, and a piston is slidably connected inside the sleeve;

[0027] An output rod is installed at the bottom end of the piston, the end of the output rod extends outside the sleeve and is slidably connected to the sleeve, and the end of the output rod extends into the open frame and contacts the fixed rod;

[0028] The top end of the piston is fixedly connected with a pull rod, and the top end of the pull rod extends outside the sleeve and is slidably connected with the sleeve;

[0029] A spring is wound on the sleeve, the top end of the spring is fixedly connected to the sleeve, the end of the spring is fixedly connected to the piston, and a handle is installed on the top end of the pull rod.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] When extracting sludge from sewage, the electric slider is first driven to move the dredging assembly left and right on the slider mounting frame to adjust to a suitable sludge extraction position. Then, the driving member rotates to make the slider mounting frame slide downward along the first support frame, so that the dredging assembly contacts the sludge and is inserted into it. During the insertion process, the dredging assembly rotates, agitates the sludge to make it evenly distributed, and breaks up larger lumps of mud so that the sludge pump can extract the sludge more effectively. This design effectively avoids the problem of large lumps of mud blocking the pipeline and improves the efficiency of sludge extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a three-dimensional structure from a first perspective of Example 1 of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0033] Figure 2 The present invention provides a sludge extraction device for sewage treatment. Figure 1 Part A in the middle is a partial enlarged schematic diagram of the three-dimensional structure;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure from a second perspective of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the internal cross-sectional three-dimensional structure of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0036] Figure 5 The present invention provides a sludge extraction device for sewage treatment. Figure 4 Part B in the middle is a partially enlarged schematic diagram of the three-dimensional structure;

[0037] Figure 6 It is a schematic diagram of the internal cross-sectional plan structure of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0038] Figure 7The present invention provides a sludge extraction device for sewage treatment. Figure 6 The middle part is a partial enlarged schematic diagram of the plane structure;

[0039] Figure 8 It is a schematic diagram of a three-dimensional structure from a first perspective of Example 2 of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0040] Fig. 9 The present invention provides a sludge extraction device for sewage treatment. Figure 8 The D part in the middle is a partially enlarged schematic diagram of the three-dimensional structure;

[0041] Fig.10 It is a schematic diagram of the internal cross-sectional plan structure of a liquid outlet pipe of a sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0042] Fig.11 The present invention provides a sludge extraction device for sewage treatment. Fig.10 The partial enlarged planar structure schematic diagram of part E in the middle;

[0043] Fig.12 It is a schematic diagram of the internal cross-sectional three-dimensional structure of the sleeve of Example 3 of the sludge extraction device for sewage treatment provided by an embodiment of the present invention;

[0044] Fig.13 The present invention provides a sludge extraction device for sewage treatment. Fig.12 Part F in the middle is a partial enlarged schematic diagram of the three-dimensional structure.

[0045] In the figure: 1. frame; 2. first support frame; 3. slider mounting frame; 4. electric slider; 5. sludge stirring shaft; 6. first channel; 7. fixed cylinder; 8. elastic top rod; 9. crushing blade; 10. first driven sprocket; 11. second driving sprocket; 12. chain; 13. sprocket drive motor; 14. screw rod; 15. screw rod drive motor; 16. electric skateboard; 17. liquid outlet pipe; 18. height sensor; 19. limit switch; 20. opening frame; 21. fixed rod; 22. sleeve; 23. piston; 24. output rod; 25. pull rod; 26. spring; 27. handle. DETAILED DESCRIPTION

[0046] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0047] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0048] Example 1

[0049] See also Figures 1 to 7A sludge extraction device for sewage treatment provided by an embodiment of the present invention comprises a frame 1, a supporting foot is fixedly connected to the lower side of the frame 1, two symmetrical first supporting frames 2 are installed on the upper side of the frame 1, a sludge pump is installed on one side of the frame 1, a slider mounting frame 3 is sleeved on the side of the first supporting frame 2 away from the frame 1, and is slidably connected to the first supporting frame 2; a driving member is installed on one side of the slider mounting frame 3; an electric slider 4 is slidably connected to the slider mounting frame 3, and a dredging component is installed on the electric slider 4; one side of the dredging component is connected to the sludge pump through a hose.

[0050] The above scheme is adopted: when the sludge in the sewage is to be extracted, the electric slider 4 is driven to drive the dredging component to slide left and right on the slider mounting frame 3. After adjusting to the appropriate sludge extraction position, the driving member rotates to make the slider mounting frame 3 slide downward along the first support frame 2, so that the dredging component contacts the sludge and is inserted therein. During the insertion process, the dredging component will rotate, stir the sludge to make it evenly distributed, and break up larger lumps of mud, so that the sludge pump can extract the sludge more effectively, effectively avoiding the problem of large lumps of mud blocking the pipeline, and improving the efficiency of sludge extraction.

[0051] It should be noted that: first, when the dredging component starts to stir the sludge, the sludge pump will start synchronously, and the sludge will be extracted from the stirring area through the suction force generated. The sludge is then guided by the dredging component, transported through the hose, and finally discharged to the outside, completing the entire sludge extraction process. Second, rollers can be installed on the support legs to move the device.

[0052] Furthermore, the dredging assembly includes two symmetrical sludge stirring shafts 5 , and the sludge stirring shafts 5 are both rotatably connected to the electric slider 4 ; and a first channel 6 is opened in each of the sludge stirring shafts 5 .

[0053] Furthermore, the dredging assembly also includes a plurality of fixed cylinders 7, which are fixedly connected to the outer wall of the sludge stirring shaft 5; an elastic top rod 8 capable of contacting the inner wall of the first channel 6 is slidably connected inside the fixed cylinder 7; and a crushing blade 9 is fixedly connected to one end of the elastic top rod 8.

[0054] Furthermore, the inner wall of the first channel 6 is made of rubber.

[0055] The above scheme is adopted: when in use, the two sludge stirring shafts 5 are driven to move left and right by the electric slider 4. After adjusting to the appropriate sludge extraction position, the driving member causes the slider mounting frame 3 to descend, so that the sludge stirring shaft 5 contacts and inserts into the sludge. At this time, the two sludge stirring shafts 5 rotate synchronously, driving the elastic push rod 8 and the crushing blade 9 thereon to stir the sludge so that it is evenly distributed. If a larger mud block is encountered, the crushing blade 9 will crush it. Since the inner wall of the first channel 6 is made of rubber, when the sludge pump extracts sludge, the sludge will pass through the first channel 6. During this process, when the crushing blade 9 contacts a larger or hard mud block, it will drive the elastic push rod 8 to retract in the fixed tube 7, and one end of the elastic push rod 8 contacts and knocks the inner wall of the first channel 6 made of rubber material, causing deformation, thereby squeezing the sludge, reducing its consistency, and improving the fluidity of the sludge in the first channel 6 and the hose, preventing the sludge with higher consistency from blocking the first channel 6 or the hose.

[0056] After the sludge block is broken, the elastic push rod 8 will extend from the fixed cylinder 7 and will not contact the inner wall of the first channel 6. If a larger or harder sludge block is encountered again, the elastic push rod 8 will be retracted again under pressure and hit the inner wall of the first channel 6, so as to further squeeze the sludge in the first channel 6. Since multiple elastic push rods 8 are provided, the inner wall of the first channel 6 can continuously squeeze and shake the sludge through the synergistic effect, so as to perform continuous squeezing treatment.

[0057] Exemplarily, the elasticity of the elastic top rod 8 comes from a spring, and the spring can be arranged on the outer surface of the elastic top rod 8, so that one end of the spring is connected to the elastic top rod 8, and the other end is fixed to the inner wall of the fixed tube 7. When the elastic top rod 8 retracts under pressure and contacts the inner wall of the first channel 6, the spring will be squeezed, which can play a buffering role for the crushing blade 9. When the elastic top rod 8 is no longer under pressure, the centrifugal force generated by the rotation of the sludge stirring shaft 5 is used, and the elastic force of the spring itself is used to drive the elastic top rod 8 to extend out of the fixed tube 7, thereby realizing its repeated extension and retraction.

[0058] Furthermore, one end of the sludge stirring shaft 5 close to the electric slider 4 is fixedly connected to the first driven sprocket 10, and a second driving sprocket 11 is installed between the two first driven sprockets 10; the second driving sprocket 11 is connected to the two first driven sprockets 10 through a chain 12; a second rotating shaft is installed on the axial center of the second driving sprocket 11, and a sprocket driving motor 13 is installed at one end of the second rotating shaft.

[0059] The above scheme is adopted: when in use, when the two sludge stirring shafts 5 need to rotate, the output end of the sprocket drive motor 13 drives the second shaft to rotate, and the second drive sprocket 11 on the second shaft rotates synchronously. Since the second drive sprocket 11 is connected to the first driven sprocket 10 by the chain 12, when the second drive sprocket 11 rotates, the chain 12 transmits power to drive the first driven sprocket 10 to rotate synchronously, thereby realizing the rotation of the sludge stirring shaft 5 connected to the first driven sprocket 10.

[0060] It should be noted that the chain drive can be replaced by a belt drive, and the specific adjustment can be made according to actual needs.

[0061] Furthermore, the driving member includes a screw rod 14 , which is located at one side of the first support frame 2 , and is connected to the slider mounting frame 3 via threads, and a screw rod driving motor 15 is installed at one end of the screw rod 14 .

[0062] The above scheme is adopted: when in use, when the slider mounting frame 3 needs to move up and down, by driving the output end of the screw drive motor 15 to rotate, its output end will drive the screw 14 to rotate synchronously. Since the screw 14 and the slider mounting frame 3 are connected by a thread, the rotation of the screw 14 will be converted into the up and down linear movement of the slider mounting frame 3 along the first support frame 2, ensuring the stable movement of the slider mounting frame 3.

[0063] Furthermore, the fixed cylinders 7 are evenly distributed on the sludge stirring shaft 5 .

[0064] Example 2

[0065] The difference from Example 1 is that please refer to Figures 8 to 11 An electric slide 16 is slidably connected to one side of the first support frame 2 close to the sludge stirring shaft 5; a liquid outlet pipe 17 that can be aligned with the first channel 6 is fixedly connected to the lower side of the electric slide 16; and the electric slide 16 is connected to a control terminal via a signal.

[0066] Furthermore, a height sensor 18 is installed on one side of the first support frame 2 close to the slider mounting frame 3;

[0067] A limit switch 19 capable of contacting the electric skateboard 16 is installed on the first support frame 2, and both the height sensor 18 and the limit switch 19 are connected to the control terminal by signals.

[0068] After the sludge extraction is completed, there is usually residual sludge in the first channel 6. If it is not cleaned, the residual sludge will accumulate for a long time and cause the first channel 6 to be blocked. Therefore, the above solution is adopted for the sludge in the first channel 6. The cleaning method adopted is as follows:

[0069] When the sludge extraction is completed, the screw 14 drives the slider mounting frame 3 and the sludge stirring shaft 5 to rise synchronously. When the slider mounting frame 3 rises to the preset height, the height sensor 18 detects and sends a signal to the control terminal. Then, the electric slider 4 reaches the middle of the slider mounting frame 3. Then, the control terminal instructs the electric slide 16 to move toward the sludge stirring shaft 5. The electric slide 16 drives the liquid outlet pipe 17 to move synchronously until the electric slide 16 hits the limit switch 19. At this time, the limit switch 19 sends a signal to the control terminal to move the electric slide 16 of the control terminal. In this process, when the electric slide 16 contacts the limit switch 19, the liquid outlet pipe 17 is aligned with the center position of the first channel 6. Then the liquid outlet pipe 17 sprays liquid onto the inner wall of the first channel 6 to clean the residual sludge.

[0070] When the inner wall of the first channel 6 is cleaned, the slider mounting frame 3 is driven to move downward, thereby leaving the detection range of the height sensor 18. The height sensor 18 then sends a signal to the control terminal. After receiving the signal, the control terminal instructs the electric slide 16 to drive the liquid outlet pipe 17 to move in the opposite direction, so that the liquid outlet pipe 17 is no longer aligned with the first channel 6, ensuring that the sludge extraction process will not be disturbed.

[0071] It should be noted that: first, the liquid can be injected into the liquid outlet pipe 17 by using the pump body through the external hose, and the high-pressure liquid is sprayed onto the inner wall of the first channel 6 through the liquid outlet pipe 17. Second, the liquid is water. Third, while the liquid outlet pipe 17 supplies water, the mud pump absorbs water, forming a cycle. Fourth, while the liquid outlet pipe 17 injects water, the sludge stirring shaft 5 rotates slowly. Since the crushing blade 9 fits with the liquid outlet pipe 17, the elastic push rod 8 can squeeze the first channel 6, thereby improving the cleaning effect.

[0072] Example 3

[0073] The difference from Example 1 and Example 2 is that, please refer to Figure 12 to Figure 13, an open frame 20 is installed at the corners around the frame 1, and a fixed rod 21 is slidably connected inside the open frame 20, and the fixed rod 21 runs through the frame 1; a sleeve 22 is fixedly connected to the top of the open frame 20, and a piston 23 is slidably connected inside the sleeve 22; an output rod 24 is installed at the bottom end of the piston 23, and the end of the output rod 24 extends to the outside of the sleeve 22 and is slidably connected to the sleeve 22, and the end of the output rod 24 extends into the open frame 20 and contacts the fixed rod 21; a pull rod 25 is fixedly connected to the top of the piston 23, and the top of the pull rod 25 extends to the outside of the sleeve 22 and is slidably connected to the sleeve 22; a spring 26 is wound around the sleeve 22, the top of the spring 26 is fixedly connected to the sleeve 22, the end of the spring 26 is fixedly connected to the piston 23, and a handle 27 is installed on the top of the pull rod 25.

[0074] When in use, after the device is moved to the sludge extraction position, the staff puts the fixing rod 21 into the open frame 20, and drives the pull rod 25 by pulling the handle 27, so that the piston 23 moves upward in the sleeve 22 and compresses the spring 26. Subsequently, the spring 26 releases elastic potential energy, pushes the piston 23 downward, and then drives the output rod 24 to insert the fixing rod 21 into the soft soil, so as to fix the device.

[0075] Working principle of the present invention:

[0076] When extracting sludge from sewage, the electric slider 4 is first driven to drive the dredging assembly to move left and right on the slider mounting frame 3. After adjusting to a suitable sludge extraction position, the driving member is started to move the slider mounting frame 3 downward along the first support frame 2, so that the dredging assembly contacts and inserts into the sludge. During the insertion process, the dredging assembly rotates, stirs the sludge to make it evenly distributed, and breaks up larger lumps of mud, so that the sludge pump can extract the sludge more effectively.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge extraction device for sewage treatment, comprising a frame (1), a support leg being fixedly connected to the lower side of the frame (1), two symmetrical first support frames (2) being mounted on the upper side of the frame (1), a sludge pump being mounted on one side of the frame (1), and characterized in that: A slider mounting frame (3) is sleeved on a side of the first support frame (2) away from the frame (1) and is slidably connected to the first support frame (2); A driving member is installed on one side of the slider mounting frame (3); The slider mounting frame (3) is slidably connected to an electric slider (4), and a dredging component is installed on the electric slider (4); One side of the dredging assembly is connected to the dredging pump via a hose; The dredging assembly comprises two symmetrical sludge stirring shafts (5), and the sludge stirring shafts (5) are both rotatably connected to the electric slider (4); The sludge stirring shaft (5) is provided with a first channel (6); The dredging assembly further comprises a plurality of fixed cylinders (7), wherein the fixed cylinders (7) are fixedly connected to the outer wall of the sludge stirring shaft (5); An elastic push rod (8) is slidably connected inside the fixed cylinder (7) and is capable of contacting the inner wall of the first channel (6); One end of the elastic push rod (8) is fixedly connected to a crushing blade (9); The inner wall of the first channel (6) is made of rubber; One end of the sludge stirring shaft (5) close to the electric slider (4) is fixedly connected to a first driven sprocket (10), and a second driving sprocket (11) is installed between the two first driven sprockets (10); The second driving sprocket (11) is connected to the two first driven sprockets (10) via a chain (12); A second rotating shaft is mounted on the axial center of the second driving sprocket (11), and a sprocket driving motor (13) is mounted on one end of the second rotating shaft; The two sludge stirring shafts (5) are driven to move left and right by the electric slider (4). After being adjusted to a suitable sludge extraction position, the driving member causes the slider mounting frame (3) to descend, allowing the sludge stirring shafts (5) to contact and insert into the sludge. At this time, the two sludge stirring shafts (5) rotate synchronously, driving the elastic top rod (8) and the crushing blades (9) thereon to stir the sludge so that it is evenly distributed. If a larger sludge block is encountered, the crushing blades (9) will crush it. Since the inner wall of the first channel (6) is made of rubber, Therefore, when the sludge pump extracts sludge, the sludge will pass through the first channel (6). During this process, when the crushing blade (9) contacts a larger or harder sludge block, it will drive the elastic push rod (8) to retract in the fixed tube (7). One end of the elastic push rod (8) contacts and strikes the inner wall of the first channel (6) made of rubber, causing deformation, thereby squeezing the sludge and reducing its consistency, thereby increasing the fluidity of the sludge in the first channel (6) and the hose, and preventing the sludge with a higher consistency from clogging the first channel (6) or the hose. After the sludge block is broken, the elastic push rod (8) will extend from the fixed cylinder (7) and will not contact the inner wall of the first channel (6). If a larger or harder sludge block is encountered again, the elastic push rod (8) will be retracted again under pressure and knock the inner wall of the first channel (6), thereby further squeezing the sludge in the first channel (6). Since a plurality of elastic push rods (8) are provided, the inner wall of the first channel (6) can continuously squeeze and shake the sludge through a coordinated effect, thereby performing a continuous squeezing process.

2. A sludge extraction device for sewage treatment as claimed in claim 1, characterized in that: The driving member comprises a screw rod (14), the screw rod (14) being located on one side of the first support frame (2), the screw rod (14) being connected to the slider mounting frame (3) via threads, and a screw rod driving motor (15) being mounted on one end of the screw rod (14).

3. A sludge extraction device for sewage treatment as claimed in claim 1, characterized in that: The fixed cylinders (7) are evenly distributed on the sludge stirring shaft (5).

4. A sludge extraction device for sewage treatment as claimed in claim 1, characterized in that: An electric slide plate (16) is slidably connected to one side of the first support frame (2) close to the sludge stirring shaft (5); A liquid outlet pipe (17) which can be aligned with the first channel (6) is fixedly connected to the lower side of the electric slide (16); The electric skateboard (16) is connected to a control terminal via a signal.

5. A sludge extraction device for sewage treatment as claimed in claim 4, characterized in that: A height sensor (18) is installed on one side of the first support frame (2) close to the slider mounting frame (3); A limit switch (19) capable of contacting the electric skateboard (16) is mounted on the first support frame (2), and both the height sensor (18) and the limit switch (19) are connected to the control terminal via signals.

6. A sludge extraction device for sewage treatment as claimed in claim 1, characterized in that: Open frames (20) are installed at the corners of the frame (1) on all sides, and a fixing rod (21) is slidably connected inside the open frame (20), and the fixing rod (21) passes through the frame (1); A sleeve (22) is fixedly connected to the top of the open frame (20), and a piston (23) is slidably connected inside the sleeve (22); An output rod (24) is installed at the bottom end of the piston (23), the end of the output rod (24) extends outside the sleeve (22) and is slidably connected to the sleeve (22), and the end of the output rod (24) extends into the open frame (20) and contacts the fixed rod (21); A pull rod (25) is fixedly connected to the top end of the piston (23), and the top end of the pull rod (25) extends outside the sleeve (22) and is slidably connected to the sleeve (22); A spring (26) is wound around the sleeve (22), the top end of the spring (26) is fixedly connected to the sleeve (22), the bottom end of the spring (26) is fixedly connected to the piston (23), and a handle (27) is installed at the top end of the pull rod (25).

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