Mud scraper and magnetic coagulation sedimentation tank

Abstract

The invention relates to the field of sewage treatment, and provides a mud scraper and a magnetic coagulation sedimentation tank, the mud scraper comprises a central shaft, a scraping arm, a scraping plate, a first driving assembly, a second driving assembly and an adjusting assembly; the scraping arm is connected with the central shaft; the scraping plate is arranged at the bottom of the scraping arm and is used for scraping mud; the first driving assembly is connected with the central shaft and is used for driving the central shaft to rotate; the second driving assembly is connected with the scraping arm and is used for driving the scraping arm to rotate; the adjusting assembly is connected with the wiping arm and used for driving the wiping arm to move relative to the center shaft and / or adjusting the posture. The mud scraper solves the problems that the mud scraping effect of the mud scraper is poor, and parts are prone to being damaged.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and particularly to a sludge scraper and a magnetic coagulation sedimentation tank. Background Art

[0002] Sludge scrapers are widely used in fields such as sewage treatment and solid-liquid separation, and particularly play an important role in the treatment of municipal sewage and industrial wastewater. For example, when treating sewage, sludge scrapers are usually applied to sedimentation tanks. Traditional sludge scrapers mainly consist of a central shaft, scraping arms, and scraping plates. The central shaft is rotated by a motor, and then the scraping plates push the sludge in the sedimentation tank into the sludge hopper in the middle of the bottom of the sedimentation tank. Finally, the collected sludge is pumped away by a sludge pump.

[0003] However, when the sludge is thick or dry, it is difficult for the scraping plates to push the sludge to move, which may lead to poor sludge scraping effect or even motor overload. In addition, the length of the scraping arms is relatively large, and the reaction force of the sludge on the scraping plates and the scraping arms may cause damage to the scraping arms, affecting the normal process of sludge scraping. Moreover, the bottom wall of the sedimentation tank is usually an inclined plane, which makes the thickness of the sludge at each part different. Traditional sludge scrapers cannot make adaptive changes according to the inclination degree of the bottom wall of the sedimentation tank and the different thicknesses of the sludge, resulting in poor sludge scraping effect. Summary of the Invention

[0004] In order to solve the problems of poor sludge scraping effect and easy damage of components of the sludge scraper, the present application provides a sludge scraper and a magnetic coagulation sedimentation tank.

[0005] In a first aspect, the present application provides a sludge scraper, comprising: A central shaft; Scraping arms, connected to the central shaft; Scraping plates, provided at the bottom of the scraping arms and used for scraping sludge; A first driving assembly, connected to the central shaft and used for driving the central shaft to rotate; A second driving assembly, connected to the scraping arms and used for driving the scraping arms to rotate; An adjusting assembly, connected to the scraping arms and used for driving the scraping arms to displace relative to the central shaft and / or adjust the attitude.

[0006] By adopting the above technical solutions, the sludge scraper can achieve efficient and precise sludge scraping operations, and can avoid component damage and overload phenomena. Specifically: 1. The first driving assembly drives the central shaft to rotate, and then drives the scraping arms and the scraping plates to rotate to complete the sludge scraping work.

[0007] 2. The second driving assembly assists in driving the scraping arms to rotate, avoiding damage to the scraping arms and overload of the first driving assembly.

[0008] 3. The adjustment assembly can drive the scraping arm to displace relative to the central axis and / or adjust its attitude, so as to adapt to different working conditions, improve the sludge scraping accuracy and applicability.

[0009] Preferably, the second driving assembly includes a moving seat, a conical tooth ring, a bevel gear, a driving unit and a first roller; The moving seat is connected to the scraping arm; The central axis of the conical tooth ring is collinear with the central axis of the central shaft; The first roller is arranged at the bottom of the moving seat; The bevel gear is rotatably connected to the moving seat, and the bevel gear meshes with the conical tooth ring; The driving unit is arranged on the moving seat and is in transmission connection with the bevel gear.

[0010] By adopting the above technical solution, the effective driving of the second driving assembly can be realized. Specifically, the driving unit drives the bevel gear to rotate, so that the moving seat can make a circular motion along the annular track of the conical tooth ring, and then drives the scraping arm to rotate. The first roller is arranged at the bottom of the moving seat, making the movement of the moving seat smoother.

[0011] Preferably, the scraping arm is slidably connected to the central shaft; The adjustment assembly includes a limiting rod and a first cylinder; One end of the limiting rod is connected to the scraping arm, and the other end is slidably connected to the moving seat; The cylinder block of the first cylinder is arranged on the moving seat, and its piston is connected to the scraping arm.

[0012] By adopting the above technical solution, the scraping arm is slidably connected to the central shaft, which can realize the position adjustment of the scraping arm relative to the central shaft, so as to adapt to sludge layers of different depths, and improve the sludge scraping efficiency and flexibility. The adjustment assembly includes a limiting rod and a first cylinder. One end of the limiting rod is connected to the scraping arm, and the other end is slidably connected to the moving seat, ensuring that the scraping arm remains stable during movement and preventing deviation. The cylinder block of the first cylinder is arranged on the moving seat, and its piston is connected to the scraping arm, which can accurately control the movement of the scraping arm, realize fast and stable sludge scraping actions, and improve work efficiency.

[0013] Preferably, the number of the scraping arms is multiple, and the heights of the multiple scraping arms are not completely the same.

[0014] By adopting the above technical solution, synchronous operation of multiple scraping arms is realized, and the sludge scraping efficiency and uniformity are improved. The heights of each scraping arm are not completely the same, so that the single - time sludge scraping thickness of the scraper on each scraping arm will not be too large or too small, which not only meets the requirements of sludge scraping efficiency, but also will not damage the scraper or the scraping arm.

[0015] Preferably, the adjusting assembly includes a rope and a winding member; One end of the scraping arm is hinged to the central shaft, and the other end is connected to the winding member provided on the moving seat through the rope, and the winding member is used for winding or releasing the rope.

[0016] By adopting the above technical solution, the scraping arm can achieve flexible angle adjustment and change the posture of the scraping arm. Specifically, the scraping arm is hinged to the central shaft, enabling the scraping arm to swing, so as to adapt to sedimentation tanks of different shapes and sizes. At the same time, by setting the rope and the winding member, the angle adjustment of the scraping arm can be precisely controlled, effectively improving the sludge scraping efficiency and cleaning effect. In addition, this design also simplifies the driving structure and reduces the complexity and maintenance cost of the equipment.

[0017] Preferably, the scraping arm is hinged to the central shaft through a hinge seat, and the hinge seat is slidably connected to the central shaft; The adjusting assembly further includes a lifting unit, and the lifting unit is provided on the central shaft and connected to the hinge seat.

[0018] By adopting the above technical solution, the scraping arm is hinged to the central shaft through the hinge seat, and the hinge seat is slidably connected to the central shaft, enabling the scraping arm to not only adjust the angle but also freely slide in the vertical direction, so as to adapt to sludge layers of different heights and sedimentation tanks of different shapes, and solve the problem of incomplete sludge scraping.

[0019] Preferably, the adjusting assembly further includes an abutting unit, and the abutting unit is provided on the central shaft and hinged to the scraping arm, and the abutting unit is used for abutting against the scraping arm to tighten the rope.

[0020] By adopting the above technical solution, the abutting unit can abut against the scraping arm, so that the end of the scraping arm away from the central shaft tends to approach the bottom of the sedimentation tank, thereby preventing the end of the scraping arm away from the central shaft from tilting upward during the sludge scraping process and ensuring the stability of sludge scraping.

[0021] Preferably, the sludge scraper further includes a water supply assembly; The inside of the central shaft is hollow, one end thereof has a water inlet, and its side wall is provided with a water outlet. The water inlet is connected to the water supply assembly, and the water outlet faces the scraping arm.

[0022] By adopting the above technical solution, the water supply assembly can spray water flow to the scraping arm through the water outlet to help remove the sludge attached to the scraping arm, thereby ensuring the cleanliness and working efficiency of the scraping arm. In addition, the water flow can also play a certain lubricating role, reducing the resistance suffered by the scraping arm and the scraper during sludge scraping and prolonging the service life of the equipment.

[0023] Preferably, the sludge scraper further includes a water blocking cover and a guide plate; The water-blocking cover is arranged on the central axis and covers the outside of the water outlet. The lower end of the water-blocking cover is open. The flow guide plate is arranged on the central axis and is located below the water outlet.

[0024] By adopting the above technical solution, the water-blocking cover can effectively prevent the water flow from directly impacting the sludge layer in the sedimentation tank, avoiding the disturbance of the sludge layer and affecting the sedimentation effect. At the same time, the flow guide plate can guide the water flow direction, ensure the uniform distribution of the water flow, and improve the sedimentation efficiency.

[0025] In a second aspect, the present application provides a magnetic coagulation sedimentation tank, including the sludge scraper as described in any one of the above and a coagulation tank, a magnetic mixing tank, a flocculation tank, and a sedimentation tank. The sludge scraper is arranged in the sedimentation tank.

[0026] By adopting the above technical solution, the present invention provides a magnetic coagulation sedimentation tank. This sedimentation tank integrates an advanced sludge scraper, which can effectively improve the sludge treatment efficiency and reduce the probability of component damage. Specifically: 1. The first driving component and the second driving component drive the scraping arm to rotate simultaneously, enabling the scraping arm and the scraper to handle thicker sludge.

[0027] 2. The introduction of the adjustment component enables the scraping arm to perform displacement and attitude adjustment relative to the central axis, further enhancing the adaptability and operability of the sludge scraper.

[0028] 3. The combination of the water supply component, the water-blocking cover, and the flow guide plate can not only provide the necessary flushing function for the scraping arm but also effectively replenish water to the sedimentation tank, improving the sludge treatment efficiency.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. By respectively driving the central axis and the scraping arm to rotate by the first driving component and the second driving component, the problems of easy overload of the motor during central drive and easy damage of the scraping arm are solved, improving the overall sludge scraping effect. 2. The introduction of the adjustment component enables the scraping arm to perform displacement and attitude adjustment on the central axis, further enhancing the flexibility and adaptability of the sludge scraper, and enabling it to maintain the best sludge scraping state in different tank types and sludge layers with different depths, improving the working efficiency and treatment quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the sludge scraper provided by the present application.

[0031] Figure 2 is provided by the present application Figure 1 The enlarged schematic diagram at position A in

[0032] Figure 3It is a top view of the sludge scraper provided by this application.

[0033] Figure 4 It is a schematic structural diagram of the second embodiment of the adjustment component of the sludge scraper provided by this application.

[0034] Figure 5 It is a schematic structural diagram of the third embodiment of the adjustment component of the sludge scraper provided by this application.

[0035] Explanation of reference numerals: 1. Central shaft; 11. Water outlet; 2. Scraping arm; 3. Scraper; 4. Mounting frame; 5. First driving component; 6. Second driving component; 61. Moving seat; 62. Conical tooth ring; 63. Bevel gear; 64. Driving unit; 65. First roller; 66. Second roller; 7. Adjustment component; 71. Limit rod; 72. First cylinder; 73. Rope; 74. Winding member; 75. Lifting unit; 76. Abutting unit; 77. Guide wheel; 8. Water blocking cover; 9. Flow guiding plate; 200. Sedimentation tank; 201. Annular groove; 202. Mud collecting hopper. Detailed implementation manners

[0036] The following further Figures 1 to 5 describes this application in detail with reference to the attached drawings.

[0037] As Figures 1 to 3 shown, the embodiment of this application discloses a sludge scraper, which is applied to treat the sludge in the sedimentation tank 200. The sludge scraper includes a central shaft 1, a scraping arm 2, a scraper 3, a mounting frame 4, a first driving component 5, a second driving component 6 and an adjustment component 7.

[0038] Specifically, the mounting frame 4 is erected above the sedimentation tank 200. The central shaft 1 is vertically arranged, the central shaft 1 is rotatably connected to the mounting frame 4, and the lower end of the central shaft 1 extends into the sedimentation tank 200. The scraping arm 2 is arranged in the sedimentation tank 200 and is connected to the central shaft 1, and multiple scrapers 3 are arranged at the lower end of each scraping arm 2. The first driving component 5 is arranged on the mounting frame 4 and is in transmission connection with the central shaft 1. By driving the central shaft 1 to rotate, the scraper 3 slowly pushes the sludge at the bottom of the sedimentation tank 200 to move, realizing sludge scraping.

[0039] The first driving component 5 at least includes a motor, and the motor can be directly connected to the central shaft 1 or indirectly in transmission connection with the central shaft 1 through conventional transmission structures such as gears and chains.

[0040] The second driving component 6 includes a moving seat 61, a conical tooth ring 62, a bevel gear 63, a driving unit 64, a first roller 65 and a second roller 66.

[0041] The conical toothed ring 62 is arranged on the ground around the sedimentation tank 200, and the central axis of the conical toothed ring 62 is collinear with the central axis of the central shaft 1. An annular groove 201 is also arranged on the ground around the sedimentation tank 200, and the central axis of the annular groove 201 is also collinear with the central axis of the central shaft 1. The bottom of the moving seat 61 is located in the annular groove 201.

[0042] The bevel gear 63 is rotatably connected to the moving seat 61, and the bevel gear 63 meshes with the conical toothed ring 62. The driving unit 64 is arranged on the moving seat 61 and is in transmission connection with the bevel gear 63. When the driving unit 64 drives the bevel gear 63 to rotate, the reaction force of the conical toothed ring 62 will cause the moving seat 61 to perform a circular motion with the central axis of the central shaft 1 as the rotation axis, and the moving seat 61 will move in the annular groove 201. The moving seat 61 is connected to the scraping arm 2. When the moving seat 61 performs a circular motion, it will drive the scraping arm 2 to rotate, thereby assisting the first driving assembly 5 to drive the scraping arm 2 and the scraping plate 3 to rotate. Among them, the driving unit 64 at least includes a motor, and the motor can be directly connected to the bevel gear 63 or indirectly connected to the bevel gear 63 through conventional transmission structures such as gears and chains.

[0043] The first roller 65 is located in the annular groove 201 and is rotatably arranged at the bottom of the moving seat 61. When the moving seat 61 moves, the first roller 65 rolls on the bottom wall of the annular groove 201, so that the movement of the moving seat 61 is smoother. The second roller 66 is rotatably arranged on the side wall of the moving seat 61, and the second roller 66 abuts against the side wall of the annular groove 201, so that the side wall of the annular groove 201 can limit the moving seat 61, prevent the bevel gear 63 from disengaging from the conical toothed ring 62, and at the same time ensure that the moving seat 61 always performs a circular motion with the central axis of the central shaft 1 as the rotation axis.

[0044] The adjusting assembly 7 is connected to the scraping arm 2 and is used to drive the scraping arm 2 to displace and / or adjust the posture relative to the central shaft 1.

[0045] As Figures 1 to 2 shown, in some embodiments, the scraping arm 2 is slidably connected to the central shaft 1. The adjusting assembly 7 includes a limiting rod 71 and a first cylinder 72. One end of the limiting rod 71 is connected to the scraping arm 2, and the other end is slidably connected to the moving seat 61. The cylinder body of the first cylinder 72 is arranged on the moving seat 61, and its piston is connected to the scraping arm 2. By the telescopic movement of the first cylinder 72, the scraping arm 2 can move along the axis direction of the central shaft 1, change the height of the scraping arm 2, realize the displacement of the scraping arm 2 relative to the central shaft 1, so that the scraping plate 3 can handle sludge with different thicknesses. Among them, the limiting rod 71 is used to limit the scraping arm 2 to ensure that the scraping arm 2 always moves with the moving seat 61. The limiting rod 71 and the first cylinder 72 are both arranged on the moving seat 61, so that the limiting rod 71 and the first cylinder 72 can always be connected to the scraping arm 2.

[0046] The number of scraping arms 2 is multiple, and the number of adjusting components 7 is equal to and corresponds one by one to the number of scraping arms 2. The adjusting component 7 is used to drive the corresponding scraping arm 2 to lift and lower. Further, the heights of the multiple scraping arms 2 may not be exactly the same. The reason is that if the heights of the multiple scraping arms 2 are exactly the same, then after the scraper 3 on the previous scraping arm 2 scrapes away part of the silt, the subsequent scraping arm 2 will no longer perform the mud scraping work when moving to the position where the previous scraping arm 2 is located, resulting in a reduction in the mud scraping efficiency. Therefore, the height of the scraping arm 2 can be flexibly adjusted during the mud scraping process, so that the subsequent scraping arm 2 can continue to perform the mud scraping work by lowering the height when moving to the position where the previous scraping arm 2 is located, thereby enabling the scraper 3 on each scraping arm 2 to be in the mud scraping state, and the single - time mud scraping thickness of each scraper 3 is approximately the same, improving the mud scraping efficiency and preventing the scraper 3 or the scraping arm 2 from being damaged.

[0047] As Figure 4 shown, in another embodiment, the adjusting component 7 includes a rope 73 and a winding member 74. One end of the scraping arm 2 is hinged to the central shaft 1, and the other end is connected to the winding member 74 provided on the moving seat 61 through the rope 73. The winding member 74 can be a winch, and the winch is provided on the moving seat 61. By winding or releasing the rope 73 through the winch, the inclination angle of the scraping arm 2 is changed, changing the posture of the scraping arm 2, so that the scraping arm 2 can adapt to sedimentation tanks 200 with various bottom inclination angles, avoiding the problem that when some scrapers 3 on a certain scraping arm 2 are in contact with the bottom surface of the sedimentation tank 200, the remaining scrapers 3 are not in contact with the bottom surface of the sedimentation tank 200, resulting in a mud scraping dead angle.

[0048] In addition, for this embodiment, other components can also be provided to meet different working conditions requirements. For example, as Figure 4 shown, the scraping arm 2 is hinged to the central shaft 1 through a hinge seat, and the hinge seat is slidably connected to the central shaft 1. The adjusting component 7 further includes a lifting unit 75. The lifting unit 75 can be a second air cylinder. The second air cylinder is vertically provided on the central shaft 1 and is connected to the hinge seat. By driving the hinge seat to move through the second air cylinder, the scraping arm 2 can be lifted and lowered.

[0049] Also, for example, as Figure 5 shown, the adjusting component 7 further includes an abutting unit 76. The abutting unit 76 can be a third air cylinder. The opposite ends of the third air cylinder are respectively hinged to the central shaft 1 and the scraping arm 2. By extending the third air cylinder and abutting against the scraping arm 2, the end of the scraping arm 2 far from the central shaft 1 can be made to tend to approach the bottom wall of the sedimentation tank 200, preventing the end of the scraping arm 2 far from the central shaft 1 from tilting upward during the mud scraping process. In addition, in this state, the rope 73 of the second driving component 6 is in a taut state, which is convenient for better driving the scraping arm 2 to rotate.

[0050] In addition, the adjustment assembly 7 further includes a guide wheel 77, which is rotatably connected to the moving seat 61. When the adjustment assembly 7 is connected to the scraper arm 2 via the rope 73 and the winch, the guide wheel 77 can limit and guide the rope 73, so that the winch can smoothly retract and release the rope 73.

[0051] like Figure 1 As shown, in some embodiments, the scraper further comprises a water supply assembly. The center shaft 1 is hollow inside, has a water inlet at one end, and a water outlet 11 is arranged on the side wall thereof, and the water inlet is connected to the water supply assembly.

[0052] Specifically, the water inlet is arranged at the top of the central axis 1, and the number of the water outlets 11 is multiple, and the multiple water outlets 11 are evenly spaced along the circumference. The water supply assembly includes a water pump, a water supply pipe and a rotary joint. The water inlet is connected to the water supply pipe through the rotary joint, and the water supply pipe is connected to the water pump. The water pump can guide clean water or sewage to be precipitated into the central axis 1 and flow into the sedimentation tank 200 from the water outlet 11.

[0053] For example, the scraper arm 2, the scraper blade 3 and the bottom wall of the sedimentation tank 200 may need to be cleaned, so the water sprayed from the water outlet 11 may be clean water. As the central axis 1 rotates, the clean water can clean all parts of the bottom surface of the sedimentation tank 200, and cooperate with the friction of the scraper blade 3. The cleaning effect can be improved. In addition, the number of water outlets 11 and the scraper arm 2 can be equal and one-to-one corresponding, and the water outlet direction of the water outlet 11 is one-to-one corresponding to the corresponding scraper arm 2, so that the scraper arm 2 and the scraper blade 3 can be cleaned at all times.

[0054] Of course, the water sprayed from the water outlet 11 can also be sewage for precipitating impurities. Introducing the sewage into the sedimentation tank 200 from multiple water outlets 11 evenly spaced along the circumference can make the sewage evenly distributed in the sedimentation tank 200, avoiding the problem of uneven distribution of sludge, and also avoiding the situation where the flow rate of a single water outlet 11 is too fast, causing disturbance of the settled sludge.

[0055] The water supply component is specifically used to introduce clean water or sewage into the sedimentation tank 200, and workers can choose one of the uses according to actual needs.

[0056] Furthermore, if Figure 1 As shown, the mud scraper also includes a water blocking cover 8 and a guide plate 9.

[0057] The flow guide plate 9 is arranged on the central axis 1 and is located below the water outlet 11. The flow guide plate 9 is used to guide the water sprayed out from the water outlet 11. The structure of the flow guide plate 9 can be formulated according to the types of water sprayed out from the water outlet 11. For example, when the sprayed water is clean water, flow guide grooves can be arranged on the flow guide plate 9, and the clean water flows to the scraping arm 2 and the scraping plate 3 through the flow guide grooves, which can avoid the dispersion of water flow. When the sprayed water is sewage, the flow guide plate 9 has a conical structure with a high middle part and a low edge, so as to evenly guide the sewage to each area in the sedimentation tank 200.

[0058] The water blocking cover 8 is mainly applied to the situation when the water sprayed out from the water outlet 11 is sewage. The water blocking cover 8 is arranged on the central axis 1 and covers the outside of the water outlet 11. The lower end of the water blocking cover 8 is open. The sewage sprayed out from the water outlet 11 impacts on the water blocking cover 8 and then falls onto the flow guide plate 9. The water blocking cover 8 can consume the kinetic energy of the sewage and avoid the sediment in the sedimentation tank 200 from being disturbed by the water flow.

[0059] When the water sprayed out from the water outlet 11 is clean water, the setting of the water blocking cover 8 is not compulsorily set. If the water blocking cover 8 is set, the side wall of the water blocking cover 8 can be set to be inclined, and the side wall of the water blocking cover 8 and the flow guide plate 9 are used together to guide the clean water.

[0060] On the other hand, the present application also provides a magnetic coagulation sedimentation tank, which includes a sludge scraper as described in any of the above embodiments, as well as a coagulation tank, a magnetic mixing tank, a flocculation tank and a sedimentation tank 200.

[0061] The magnetic coagulation sedimentation tank 200 is used to treat sewage. The sewage to be treated is first introduced into the coagulation tank, and by adding a coagulant into the coagulation tank, the colloidal particles or suspended particles in the sewage interact with the coagulant to form small flocs. The coagulant can be PAC (Poly Aluminium Chloride, Chinese name is polyaluminium chloride), and polyaluminium chloride can make the suspended particles destabilize and react with phosphorus in the water to achieve the purpose of phosphorus removal.

[0062] The preliminarily treated sewage is introduced into the magnetic mixing tank, and by adding magnetic powder into the magnetic mixing tank, the magnetic powder and the coagulant act in water to form magnetic flocs. Under the action of the magnetic field, the magnetic flocs are attracted by the magnetic force and accelerate to settle to the bottom of the tank.

[0063] The main function of the flocculation tank is to further promote the aggregation of suspended substances, colloidal substances, etc. in the sewage into large particle groups, so that they are more easily removed in the subsequent sedimentation process. The specific method can be to add a flocculant (such as Polyacrylamide, Chinese name is polyacrylamide). Flocculants are usually high molecular compounds, and they can form long-chain structures in water and aggregate suspended substances and colloidal substances into larger flocs through adsorption, winding and bridging.

[0064] Finally, the sewage containing flocs is precipitated in the sedimentation tank 200 to achieve the separation of mud and water. A sludge scraper is provided in the sedimentation tank 200. The bottom surface of the sedimentation tank 200 has a structure that is low in the center and high around, and a sludge hopper 202 is provided in the middle of the bottom surface. The sludge hopper 202 is connected with a sludge discharge pipeline. The sludge can converge towards the middle sludge hopper 202 under the push of the scraper 3, and then the converged sludge is discharged from the sedimentation tank 200 through the sludge discharge pipeline by means of a sewage pump.

[0065] In addition, stirrers can be installed in the coagulation tank, magnetic mixing tank and flocculation tank respectively to ensure that the sewage can fully react with the added materials.

Claims

1. A mud scraper, characterized in that: include: Central axis (1); A scraper arm (2) connected to the central shaft (1); A scraper (3) is arranged at the bottom of the scraper arm (2) and is used for scraping mud; A first driving assembly (5) connected to the central shaft (1) and used to drive the central shaft (1) to rotate; A second driving assembly (6) connected to the scraper arm (2) and used to drive the scraper arm (2) to rotate; An adjustment component (7) is connected to the scraper arm (2) and is used to drive the scraper arm (2) to move relative to the central axis (1) and / or adjust its posture.

2. The mud scraper according to claim 1, characterized in that: The second driving assembly (6) comprises a moving seat (61), a conical gear ring (62), a bevel gear (63), a driving unit (64) and a first roller (65); The movable seat (61) is connected to the scraper arm (2); The central axis of the conical gear ring (62) is collinear with the central axis of the central shaft (1); The first roller (65) is arranged at the bottom of the moving seat (61); The bevel gear (63) is rotatably connected to the movable seat (61), and the bevel gear (63) is meshed with the conical gear ring (62); The driving unit (64) is disposed on the moving seat (61) and is transmission-connected to the bevel gear (63).

3. The mud scraper according to claim 2, characterized in that: The scraper arm (2) is slidably connected to the central shaft (1); The adjustment assembly (7) comprises a limiting rod (71) and a first cylinder (72); One end of the limiting rod (71) is connected to the scraper arm (2), and the other end is slidably connected to the movable seat (61); The cylinder body of the first cylinder (72) is arranged on the movable seat (61), and the piston thereof is connected to the scraper arm (2).

4. The mud scraper according to claim 3, characterized in that: There are a plurality of scraper arms (2), and the heights of the plurality of scraper arms (2) are not completely the same.

5. The mud scraper according to claim 2, characterized in that: The adjustment assembly (7) comprises a rope (73) and a winding member (74); One end of the scraper arm (2) is hinged to the central shaft (1), and the other end is connected to the winding member (74) provided on the movable seat (61) via the rope (73); the winding member (74) is used to wind up or release the rope (73).

6. The mud scraper according to claim 5, characterized in that: The scraper arm (2) is hinged to the central shaft (1) via a hinge seat, and the hinge seat is slidably connected to the central shaft (1); The adjustment assembly (7) further comprises a lifting unit (75), wherein the lifting unit (75) is arranged on the central axis (1) and connected to the hinge seat.

7. The mud scraper according to claim 5, characterized in that: The adjustment assembly (7) further comprises an abutment unit (76), wherein the abutment unit (76) is arranged on the central axis (1) and is hinged to the scraper arm (2), and the abutment unit (76) is used to abut against the scraper arm (2) so as to tighten the rope (73).

8. The mud scraper according to claim 1, characterized in that: The scraper also includes a water supply assembly; The central shaft (1) is hollow inside and has a water inlet at one end. A water outlet (11) is provided on the side wall. The water inlet is connected to the water supply assembly, and the water outlet (11) faces the scraper arm (2).

9. The mud scraper according to claim 8, characterized in that: The mud scraper further comprises a water blocking cover (8) and a guide plate (9); The water blocking cover (8) is arranged on the central axis (1) and is arranged outside the water outlet (11), and the lower end of the water blocking cover (8) is open; The guide plate (9) is arranged on the central axis (1) and is located below the water outlet (11).

10. A magnetic coagulation sedimentation tank, characterized in that: include: The sludge scraper and the coagulation tank, magnetic mixing tank, flocculation tank and sedimentation tank (200) according to any one of claims 1 to 9, wherein the sludge scraper is arranged in the sedimentation tank (200).

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