Central transmission mud scraper

Abstract

The utility model discloses a center transmission mud scraper, which relates to the technical field of sewage treatment and comprises a working bridge. A driving device; a central tube; each mud scraping mechanism comprises a supporting pipe, a transmission shaft, a plurality of mud scraping plates and a plurality of rotating shafts; an adjusting shaft; a drive shaft; and rotating wheels. According to the utility model, synchronous inclination angle adjustment of each scraper can be conveniently and quickly completed, the device has the advantages of simplicity in operation, high adjustment efficiency, low labor intensity and the like, the sewage treatment procedure cannot be interrupted by adjustment, the working time of equipment is guaranteed, the overall treatment efficiency is improved, power transmission is prevented from being interfered by the external environment, and the service life of the device is prolonged. And the transmission stability and the service life are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a central transmission mud scraper. Background Art

[0002] A sludge scraper is a specialized piece of sludge removal equipment widely used in sewage treatment plants, waterworks, and various aspects of industrial wastewater treatment, such as sewage treatment sedimentation tanks, raw water pre-treatment clarification tanks, and sludge thickening tanks. Its primary function is to scrape away sludge deposited at the bottom of the tank and collect it in a central sludge collection pit. Finally, using water pressure, it is smoothly discharged through sludge pipes.

[0003] In a central drive scraper, the scraper blade is a key component for scraping away the sludge deposited at the bottom of the tank. Adjustment of its inclination angle has a significant impact on the performance and effect of the scraper, mainly including:

[0004] 1. Improve scraping efficiency: By adjusting the inclination angle of the scraper, it can be better adapted to the distribution of sludge at the bottom of the tank; when the angle of the scraper matches the sedimentation state of the sludge, it can more effectively scrape the sludge and collect it in the central mud pit, thereby improving the scraping efficiency;

[0005] 2. Reduce sludge residue: A proper scraper blade angle can reduce the amount of sludge remaining at the bottom of the tank. If the angle is too small, the sludge may not be scraped thoroughly. If the angle is too large, it may increase the friction between the scraper blade and the bottom of the tank, which will affect the scraping effect.

[0006] 3. Reduce wear: The friction between the scraper and the bottom of the trough is one of the main reasons for scraper wear; therefore, by adjusting the inclination angle of the scraper, the friction intensity between it and the bottom of the trough can be reduced, thereby extending the service life of the scraper;

[0007] 4. Adapt to different sludge properties: The properties of the sludge (such as viscosity, water content, etc.) will affect the scraping effect; therefore, by adjusting the inclination angle of the scraper, it can be better adapted to sludge of different properties, ensuring that the scraper can maintain good performance under various working conditions.

[0008] However, in the existing central drive scraper, the inclination angle of the scraper blade is not easy to adjust; it requires the operator to enter the pool after the machine is shut down to manually adjust it one by one, which has problems such as complicated operation, extremely low adjustment efficiency, and high labor intensity. It will also interrupt the sewage treatment process, resulting in a reduction in equipment working time, thereby affecting the overall treatment efficiency. Utility Model Content

[0009] The utility model aims to provide a central transmission mud scraper, which solves the technical problem in the prior art that the inclination angle of the mud scraper is difficult to adjust.

[0010] The utility model discloses a central transmission mud scraper, comprising:

[0011] The working bridge is arranged horizontally and erected above the sedimentation tank;

[0012] A driving device, mounted on the working bridge;

[0013] A central pipe is vertically arranged below the working bridge and is in driving connection with the driving device;

[0014] A plurality of scraping mechanisms are evenly arranged around the central tube, and the scraping mechanisms include:

[0015] The support tube is tilted and one end is connected to and communicates with the central tube.

[0016] The transmission shaft is rotatably disposed in the support tube.

[0017] Multiple scrapers are evenly spaced below the support tube.

[0018] A plurality of rotating shafts are fixedly connected to the top of the scraper blade in a one-to-one correspondence and are rotatably connected to the support tube, and one end of the rotating shafts is inserted into the support tube and is in transmission connection with the transmission shaft;

[0019] An adjusting shaft is rotatably disposed in the central tube and is in driving connection with each of the transmission shafts;

[0020] A drive shaft is arranged transversely and rotatably mounted on the top periphery of the central tube, with one end penetrating into the central tube and being in transmission connection with the transmission shaft;

[0021] The runner is mounted on the other end of the driving shaft.

[0022] This application can easily and quickly complete the synchronous inclination angle adjustment of each scraper, and has the advantages of simple operation, high adjustment efficiency, and low labor intensity. The adjustment will not interrupt the sewage treatment process, ensuring the working time of the equipment and improving the overall treatment efficiency.

[0023] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0024] Preferably, the mud scraping mechanism includes:

[0025] A plurality of first bevel gears are provided in a one-to-one correspondence at one end of the rotating shaft passing through the support tube;

[0026] Multiple second bevel gears are fixedly mounted on the transmission shaft and correspond one-to-one with and mesh with the first bevel gears. This solution has the advantages of smooth transmission, low noise, strong load-bearing capacity, large transmission ratio, material saving, strong adaptability and long service life.

[0027] Preferably, it also includes:

[0028] a third bevel gear, provided at one end of the drive shaft penetrating into the central tube;

[0029] a fourth bevel gear, fixedly sleeved on the adjusting shaft and meshing with the third bevel gear;

[0030] A plurality of fifth bevel gears are provided in a one-to-one correspondence at one end of the transmission shaft passing through the central tube;

[0031] The sixth bevel gear is fixedly sleeved on the adjusting shaft and meshes with the fifth bevel gear. This solution has the advantages of smooth transmission, low noise, strong load-bearing capacity, large transmission ratio, material saving, strong adaptability and long service life.

[0032] Preferably, the mud scraping mechanism includes:

[0033] a cross bar, arranged transversely above the support tube and having one end connected to the central tube;

[0034] a pull rod, one end of which is connected to the cross bar and the other end of which is connected to the central tube;

[0035] A plurality of reinforcing rods are vertically arranged and spaced apart between the cross bar and the support tube; this solution improves the structural strength and stability of the scraper mechanism, ensures support stability, and enhances the load-bearing capacity.

[0036] Preferably, it also includes:

[0037] A plurality of support rods are evenly arranged around the central tube and alternately arranged with the support tubes, and one end of the support rods is connected to the central tube;

[0038] Multiple pairs of pull ropes are arranged one by one on both sides of the support rod, and each pair of pull ropes is connected to two adjacent support tubes respectively; this solution provides additional support and stability, which can prevent the support tube from shaking or shifting when the scraper is subjected to resistance and pressure from the sludge, and can serve as overload protection to improve the load-bearing capacity of the support tube.

[0039] Preferably, the mud scraping mechanism includes:

[0040] A plurality of bars are arranged vertically and spaced apart laterally, and the upper and lower ends are respectively connected to the cross bar and the support pipe; this solution is used to slowly stir the water body during the sludge scraping process, thereby promoting the sedimentation of suspended solid matter in the sewage.

[0041] Preferably, it also includes:

[0042] skimmer plates, arranged horizontally;

[0043] Multiple connecting rods are arranged at intervals in the transverse direction, and the upper ends are connected to the skimming plates, and the lower ends are connected to any of the cross bars. By adopting this solution, the scum can be removed, thereby improving the sludge treatment effect, and the structure is stable and not easy to shake, thereby ensuring the removal effect.

[0044] Preferably, it also includes:

[0045] The lifting device is installed on the working bridge, and the driving end is connected to the top end of the central tube. With this solution, the distance between the scraper and the bottom of the sedimentation tank can be adjusted to ensure that the scraper can fit tightly to the bottom of the tank and effectively scrape off the sludge while avoiding excessive wear or damage to the scraper. The height of the scraper can also be adjusted according to changes in the thickness of the sludge to ensure that the scraping effect is always maintained in the best condition.

[0046] Preferably, it also includes:

[0047] An extension rod, coaxially arranged at the bottom end of the central tube;

[0048] A driving disc, fixedly sleeved on the lower end of the extension rod;

[0049] A plurality of stirring blades are installed on the bottom surface of the driving disc and are evenly arranged around the extension rod. This solution can prevent the sludge in the sludge collecting pit from settling and compacting, thereby improving the sludge discharge efficiency.

[0050] Preferably, the mud scraping mechanism includes:

[0051] A plurality of reinforcing tubes are mounted on the support tube and sleeved outside the rotating shaft in a one-to-one correspondence;

[0052] A plurality of rotating rings are rotatably mounted on the outside of the reinforcement tube in a one-to-one corresponding manner;

[0053] A plurality of pairs of connecting blocks are arranged on both sides of the rotating ring in a one-to-one correspondence, and each pair of the connecting blocks is connected to the adjacent scraper blades; the adoption of this solution significantly improves the bearing capacity and connection strength of the support tube, can effectively prevent it from loosening due to excessive force, ensures the stability of the posture and force during scraping, and extends the service life.

[0054] Through the above technical solution, the utility model achieves the following beneficial effects:

[0055] 1. This application can quickly and easily adjust the synchronous inclination angle of each scraper blade, and has the advantages of simple operation, high adjustment efficiency, low labor intensity, etc., and the adjustment will not interrupt the sewage treatment process, ensuring the working time of the equipment and improving the overall treatment efficiency;

[0056] 2. This application avoids interference from the external environment in power transmission by rotating the transmission shaft in the support tube, rotating the adjustment shaft in the center tube, and then allowing one end of the rotating shaft to pass through the support tube and be connected to the transmission shaft, thereby improving transmission stability and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0058] Figure 1 This is a structural diagram of a central transmission mud scraper according to a specific embodiment of the present utility model;

[0059] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0060] Figure 3 for Figure 1 A magnified schematic diagram of point B in the middle;

[0061] Figure 4 for Figure 1 The enlarged schematic diagram of point C in the middle;

[0062] Figure 5 for Figure 1 A partial top sectional view of the central drive scraper shown;

[0063] Description of reference numerals:

[0064] 1. Working bridge; 2. Drive unit; 3. Center tube; 4. Sludge scraper; 5. Adjusting shaft; 6. Drive shaft; 7. Rotor; 8. Third bevel gear; 9. Fourth bevel gear; 10. Fifth bevel gear; 11. Sixth bevel gear; 12. Support rod; 13. Pull rope; 14. Slag skimmer; 15. Connecting rod; 16. Lifting device; 17. Extension rod; 18. Drive disc; 19. Mixing blade

[0065] 401. Support tube; 402. Drive shaft; 403. Scraper; 404. Rotating shaft; 405. First bevel gear; 406. Second bevel gear; 407. Cross bar; 408. Pull rod; 409. Reinforcement rod; 4010. Bar; 4011. Reinforcement tube; 4012. Rotating ring; 4013. Connecting block. DETAILED DESCRIPTION

[0066] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0067] First of all, it should be noted that in the following description, some directional words involved in order to clearly illustrate the technical solution of the present invention, such as the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., all have meanings that are inferred from the normal directions of the components in the central drive scraper. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0069] In this application, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0070] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0071] Example:

[0072] like Figure 1 As shown, an embodiment of the present application discloses a central drive scraper for scraping off sludge deposited at the bottom of a pool and collecting the sludge into a central sludge collection pit. Its specific structure includes: a working bridge 1, a drive device 2, a central tube 3, multiple scraping mechanisms 4, an adjusting shaft 5, a drive shaft 6 and a rotor 7.

[0073] The working bridge 1 is arranged horizontally and erected above the sedimentation tank; it mainly serves as a support and operating platform for the entire scraper to ensure the stable progress of the scraping operation.

[0074] The driving device 2 is installed on the working bridge 1; it provides the necessary power source for the scraper and is used to drive the central pipe 3 to rotate.

[0075] The central tube 3 is arranged vertically below the working bridge 1 and is connected to the driving device 2; it is used to drive each scraping mechanism 4 to rotate horizontally, thereby scraping sludge synchronously, and the interior serves as a channel for power transmission.

[0076] Multiple scraping mechanisms 4 are evenly arranged around the central pipe 3 to ensure uniform force, thereby improving the stability of equipment operation.

[0077] Specifically, the scraping mechanism 4 includes: a support tube 401, a transmission shaft 402, a plurality of scraping blades 403 and a plurality of rotating shafts 404, which are arranged as follows:

[0078] The support tube 401 is tilted and connected to the central tube 3 at one end, and is used to support the scraper 403. The interior of the support tube 401 serves as a transmission channel.

[0079] The transmission shaft 402 is rotatably disposed in the support tube 401 for power transmission;

[0080] A plurality of scrapers 403 are evenly spaced below the support tube 401 for directly contacting and scraping away the sludge;

[0081] Multiple rotating shafts 404 are fixed one by one to the top of the scraper blade 403 and are rotatably connected to the support tube 401. One end of the rotating shafts 404 passes through the support tube 401 and is transmission-connected to the transmission shaft 402, so as to support and fix the scraper blade 403 and adjust the inclination angle of the scraper blade 403 by rotation.

[0082] The adjusting shaft 5 is rotatably disposed in the central tube 3 and is in transmission connection with each transmission shaft 402 for transmitting power.

[0083] The drive shaft 6 is arranged horizontally and is rotatably mounted on the top periphery of the central tube 3 , with one end penetrating into the central tube 3 and being in transmission connection with the transmission shaft 402 for transmitting power.

[0084] The runner 7 is mounted on the other end of the drive shaft 6 to facilitate manual adjustment by the operator.

[0085] The above technical solution works as follows:

[0086] During operation, the driving device 2 drives the central tube 3 to rotate, and the central tube 3 drives each scraping mechanism 4 to rotate. The support tube 401 in the scraping mechanism 4 drives multiple scraping plates 403 to scrape the bottom of the pool.

[0087] When it is necessary to adjust the inclination angle of the scraper blade 403, the operator rotates the wheel 7, the wheel 7 drives the drive shaft 6 to rotate, the drive shaft 6 drives the adjustment shaft 5 to rotate, the adjustment shaft 5 drives the transmission shafts 402 in each scraper mechanism 4 to rotate synchronously, the transmission shaft 402 drives each rotating shaft 404 to rotate synchronously, so that the rotating shaft 404 drives the scraper blade 403 to deflect, thereby completing the inclination angle adjustment.

[0088] Through the above-mentioned setting, the operator can easily and quickly complete the synchronous tilt angle adjustment of each scraper 403, and it has the advantages of simple operation, high adjustment efficiency, and low labor intensity. The adjustment will not interrupt the sewage treatment process, thereby ensuring the working time of the equipment and improving the overall treatment efficiency.

[0089] In some embodiments, as Figure 2 As shown, the mud scraping mechanism 4 includes: multiple first bevel gears 405 and multiple second bevel gears 406; wherein, the multiple first bevel gears 405 are arranged one-to-one at one end of the rotating shaft 404 that penetrates into the support tube 401; the multiple second bevel gears 406 are fixedly sleeved on the transmission shaft 402, and correspond one-to-one with the first bevel gears 405 and mesh with each other.

[0090] During transmission, the transmission shaft 402 rotates, driving the second bevel gears 406 thereon to rotate synchronously. The second bevel gears 406 drive the first bevel gears 405 meshing therewith to rotate. The first bevel gears 405 drive the rotating shaft 404 to rotate. The rotating shaft 404 drives the scraper blade 403 to rotate.

[0091] The above arrangement ensures smooth power transmission between the transmission shaft 402 and each rotating shaft 404 , and has the advantages of smooth transmission, low noise, strong load-bearing capacity, large transmission ratio, material saving, strong adaptability and long service life.

[0092] In some embodiments, as Figure 3 and Figure 4 As shown, it also includes: a third bevel gear 8, a fourth bevel gear 9, a plurality of fifth bevel gears 10 and a sixth bevel gear 11, which are arranged as follows:

[0093] The third bevel gear 8 is provided at one end of the drive shaft 6 which penetrates into the central tube 3;

[0094] The fourth bevel gear 9 is fixedly sleeved on the adjusting shaft 5 and meshes with the third bevel gear 8;

[0095] A plurality of fifth bevel gears 10 are provided one by one correspondingly at one end of the transmission shaft 402 which penetrates into the central tube 3;

[0096] The sixth bevel gear 11 is fixedly sleeved on the adjusting shaft 5 and meshes with the fifth bevel gear 10 .

[0097] During transmission, the drive shaft 6 rotates, and the drive shaft 6 drives the third bevel gear 8 to rotate, the third bevel gear 8 drives the fourth bevel gear 9 to rotate, the fourth bevel gear 9 drives the adjusting shaft 5 engaged therewith to rotate, the adjusting shaft 5 drives the sixth bevel gear 11 to rotate, the sixth bevel gear 11 drives each fifth bevel gear 10 engaged therewith to rotate, and the fifth bevel gear 10 drives the transmission shaft 402 to rotate.

[0098] Through the above arrangement, the smooth power transmission between the drive shaft 6, the adjustment shaft 5 and the transmission shaft 402 is ensured, and it has the advantages of smooth transmission, low noise, strong load-bearing capacity, large transmission ratio, material saving, strong adaptability and long service life.

[0099] In some embodiments, as Figure 1 As shown, the scraping mechanism 4 includes: a cross bar 407, a pull rod 408 and a plurality of reinforcement rods 409, which are arranged as follows:

[0100] The crossbar 407 is arranged horizontally above the support tube 401 and one end is connected to the central tube 3;

[0101] One end of the pull rod 408 is connected to the cross bar 407, and the other end is connected to the central tube 3;

[0102] A plurality of reinforcement rods 409 are vertically arranged and spaced apart between the cross bar 407 and the support tube 401 .

[0103] Through the above arrangement, the structural strength and stability of the mud scraping mechanism 4 are improved, the support stability is ensured, and the bearing capacity is improved.

[0104] In some embodiments, the present invention further comprises: a plurality of support rods 12 and a plurality of pairs of pull ropes 13, which are configured as follows:

[0105] Multiple support rods 12 are evenly arranged around the central tube 3 and alternately arranged with the support tubes 401, and one end is connected to the central tube 3;

[0106] A plurality of pairs of pull ropes 13 are disposed on both sides of the support rod 12 in a one-to-one correspondence, and each pair of pull ropes 13 is connected to two adjacent support tubes 401 .

[0107] The above arrangement provides additional support and stability, which can prevent the support tube 401 from shaking or deflecting when the scraper blade 403 is subjected to resistance and pressure from the sludge, and can also serve as overload protection to improve the bearing capacity of the support tube 401.

[0108] In some embodiments, the scraping mechanism 4 includes: a plurality of bars 4010, which are vertically arranged and arranged at intervals in the horizontal direction, and the upper and lower ends are respectively connected to the cross bar 407 and the support tube 401; and are used to slowly stir the water body during the scraping process, thereby promoting the sedimentation of suspended solid matter in the sewage.

[0109] In some embodiments, the system further comprises: a skimming plate 14 and a plurality of connecting rods 15, which are configured as follows:

[0110] The skimmer plate 14 is arranged horizontally to remove scum on the water surface to prevent it from being discharged along with the supernatant, thereby improving the purity and quality of the supernatant;

[0111] A plurality of connecting rods 15 are arranged at intervals in the transverse direction, and the upper ends are connected to the skimming plate 14 , and the lower ends are connected to any one of the cross bars 407 , so as to support the skimming plate 14 .

[0112] Through the above arrangement, the scum can be removed, thereby improving the sludge treatment effect, and the structure is stable and not easy to shake, thereby ensuring the removal effect.

[0113] In some embodiments, as Figure 1 As shown, it also includes: a lifting device 16, which is installed on the working bridge 1, and the driving end is connected to the top end of the central pipe 3.

[0114] Through the above settings, the distance between the scraper blade 403 and the bottom of the sedimentation tank can be adjusted to ensure that the scraper blade 403 can fit tightly to the bottom of the tank and effectively scrape off the sludge while avoiding excessive wear or damage to the scraper blade 403; the height of the scraper blade 403 can also be adjusted according to changes in the sludge thickness to ensure that the scraping effect always remains in the best state.

[0115] In some embodiments, as Figure 1 As shown, it also includes: an extension rod 17, a drive disk 18 and a plurality of stirring blades 19, which are arranged as follows:

[0116] The extension rod 17 is coaxially arranged at the bottom end of the central tube 3 and is used to extend into the mud collection pit to support the drive disc 18 and the mixing blade 19;

[0117] The drive disc 18 is fixedly mounted on the lower end of the extension rod 17 and serves as a support and driving component for the stirring blade 19. The driving disc 18 drives the stirring blade 19 to work by rotating.

[0118] A plurality of stirring blades 19 are mounted on the bottom surface of the driving disc 18 and are evenly arranged around the extension rod 17 to stir the sludge in the sludge collection pit to prevent the sludge from settling and compacting, thereby facilitating the discharge of the sludge.

[0119] The above arrangement can prevent the sludge in the sludge collecting pit from settling and compacting, thereby improving the sludge discharge efficiency.

[0120] In some embodiments, as Figure 2 As shown, the scraping mechanism 4 includes: a plurality of reinforcing tubes 4011, a plurality of rotating rings 4012 and a plurality of pairs of connecting blocks 4013, which are configured as follows:

[0121] A plurality of reinforcing tubes 4011 are mounted on the support tube 401 and sleeved one by one on the outside of the rotating shaft 404 to enhance the bearing capacity of the support tube 401;

[0122] A plurality of rotating rings 4012 are rotatably mounted on the outside of the reinforcing tube 4011 to provide support;

[0123] A plurality of pairs of connection blocks 4013 are disposed on both sides of the rotating ring 4012 in a one-to-one correspondence, and each pair of connection blocks 4013 is connected to adjacent scraper blades 403 .

[0124] Through the above arrangement, the bearing capacity and connection strength of the support tube 401 are significantly improved, which can effectively prevent it from loosening due to excessive force, ensure the stability of the posture and force when scraping mud, and extend the service life.

[0125] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0126] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A central drive scraper, characterized in that: include: The working bridge is arranged horizontally and erected above the sedimentation tank; A driving device, mounted on the working bridge; A central pipe is vertically arranged below the working bridge and is in driving connection with the driving device; A plurality of scraping mechanisms are evenly arranged around the central tube, and the scraping mechanisms include: The support tube is tilted and one end is connected to and communicates with the central tube. The transmission shaft is rotatably disposed in the support tube. Multiple scrapers are evenly spaced below the support tube. A plurality of rotating shafts are fixedly connected to the top of the scraper blade in a one-to-one correspondence and are rotatably connected to the support tube, and one end of the rotating shafts is inserted into the support tube and is in transmission connection with the transmission shaft; An adjusting shaft is rotatably disposed in the central tube and is in driving connection with each of the transmission shafts; A drive shaft is arranged transversely and rotatably mounted on the top periphery of the central tube, with one end penetrating into the central tube and being in transmission connection with the transmission shaft; The runner is mounted on the other end of the driving shaft.

2. The central transmission mud scraper according to claim 1, characterized in that: The scraping mechanism comprises: A plurality of first bevel gears are provided in a one-to-one correspondence at one end of the rotating shaft passing through the support tube; A plurality of second bevel gears are fixedly sleeved on the transmission shaft and correspond to and mesh with the first bevel gears one by one.

3. The central transmission mud scraper according to claim 1, characterized in that: Also includes: a third bevel gear, provided at one end of the drive shaft penetrating into the central tube; a fourth bevel gear, fixedly sleeved on the adjusting shaft and meshing with the third bevel gear; A plurality of fifth bevel gears are provided in a one-to-one correspondence at one end of the transmission shaft passing through the central tube; The sixth bevel gear is fixedly sleeved on the adjusting shaft and meshes with the fifth bevel gear.

4. The central transmission mud scraper according to claim 1, characterized in that: The scraping mechanism comprises: a cross bar, arranged transversely above the support tube and having one end connected to the central tube; a pull rod, one end of which is connected to the cross bar and the other end of which is connected to the central tube; A plurality of reinforcing rods are vertically arranged and spaced between the cross rod and the supporting tube.

5. The central transmission mud scraper according to claim 1, characterized in that: Also includes: A plurality of support rods are evenly arranged around the central tube and alternately arranged with the support tubes, and one end of the support rods is connected to the central tube; A plurality of pairs of pull ropes are arranged on both sides of the support rod in a one-to-one correspondence, and each pair of the pull ropes is respectively connected to two adjacent support tubes.

6. The central transmission mud scraper according to claim 4, characterized in that: The scraping mechanism comprises: A plurality of grating bars are vertically arranged and spaced apart in a transverse direction, and the upper and lower ends are respectively connected to the cross bar and the support tube.

7. The central transmission mud scraper according to claim 4, characterized in that: Also includes: skimmer plates, arranged horizontally; A plurality of connecting rods are arranged at intervals in the transverse direction, and the upper ends are connected to the skimming plate, and the lower ends are connected to any one of the cross bars.

8. The central transmission mud scraper according to claim 1, characterized in that: Also includes: A lifting device is installed on the working bridge, and a driving end is connected to the top end of the central pipe.

9. The central transmission mud scraper according to claim 1, characterized in that: Also includes: An extension rod, coaxially arranged at the bottom end of the central tube; A driving disc, fixedly sleeved on the lower end of the extension rod; A plurality of stirring blades are installed on the bottom surface of the driving disk and are evenly arranged around the extension rod.

10. The central transmission mud scraper according to claim 1, characterized in that: The scraping mechanism comprises: A plurality of reinforcing tubes are mounted on the support tube and sleeved outside the rotating shaft in a one-to-one correspondence; A plurality of rotating rings are rotatably mounted on the outside of the reinforcement tube in a one-to-one corresponding manner; A plurality of pairs of connection blocks are arranged on both sides of the rotating ring in a one-to-one correspondence, and each pair of the connection blocks is connected to adjacent scrapers.

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