A reciprocating sludge scraper for sedimentation tanks

Abstract

This invention relates to the field of sludge treatment technology, specifically to a reciprocating sludge scraper for sedimentation tanks. It includes a concave bottom frame, an opening groove, a first fixed frame, and a second fixed frame. The opening groove is located at the center of the concave bottom frame. The first and second fixed frames are respectively located on the top surface of the concave bottom frame on either side of the opening groove. A limiting frame is fixedly installed at one opening of the opening groove. A pushing mechanism is provided on the top surface of the concave bottom frame on one side of the first fixed frame. This invention reduces the risk of sludge jamming in the operating components and, through intermittent lifting and scraping, reduces sludge retention in the tank and blockage of the discharge port. It also intermittently cuts the discharged sludge to further reduce sludge blockage and facilitate subsequent collection, comprehensively improving the operating efficiency of the sludge scraper.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, specifically to a reciprocating sludge scraper for sedimentation tanks. Background Technology

[0002] The sludge scraper is a key piece of equipment for sewage and sludge treatment, widely used in urban and rural environmental sewage and sludge treatment industries. The scraper has a sludge trough at its bottom. Sewage and sludge enter the sedimentation tank and settle due to gravity or concentration using chemicals, resulting in clear water at the top and settled sludge at the bottom. The scraper then discharges the settled sludge slurry through the sludge trough into the sedimentation tank for further processing according to the sewage and sludge treatment process. The scraper also has running scraper blades at its bottom. These blades push the settled sludge slurry towards the sludge trough and discharge it through the discharge hole, while the clear water is discharged from the top of the sedimentation tank, achieving the separation of sludge and clear water.

[0003] Existing patent CN2153877609U discloses a hydraulic reciprocating sludge scraper to solve the problem that after long-term use, a large amount of sludge easily adheres to the outer wall of the scraper. In order to avoid the sludge from corroding the scraper, the scraper needs to be cleaned manually every time, which is a heavy workload.

[0004] However, the sludge scraper in the aforementioned comparative patent is a conventional sludge scraping mechanism. During operation, it is directly submerged in the sludge and is driven by a triangular arm fixing frame, hydraulic drive components, etc. This structure is very likely to cause sludge to accumulate inside the device, affecting the movement and operation of the scraper.

[0005] Meanwhile, although the aforementioned comparative patent can scrape the sludge in the sedimentation tank and remove sludge from the surface of the scraper, it is easy to clog the discharge port due to the continuous accumulation of sludge during the scraping process. In addition, during the reciprocating motion, since the linear movement height of the scraper remains unchanged, the sludge that was not scraped off on the first time is easily pushed back to the opposite side of the scraper, forming a scraping dead angle and reducing the sludge cleaning efficiency.

[0006] To address this technical deficiency, a solution is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a reciprocating sludge scraper for sedimentation tanks to address the technical deficiencies mentioned in the background art.

[0008] The objective of this invention can be achieved through the following technical solution: a reciprocating sludge scraper for sedimentation tank, comprising a concave bottom frame, an opening groove, a first fixed frame, and a second fixed frame. The opening groove is located at the center of the concave bottom frame, and the first fixed frame and the second fixed frame are respectively located on the top surface of the concave bottom frame on both sides of the opening groove.

[0009] A limiting frame is fixedly installed at the opening on one side of the slot, and a pushing mechanism is provided on the top surface of the concave bottom frame at one side of the fixed frame.

[0010] The fixed frame 1 has a groove at the center of its top surface and a T-shaped sliding plate is slidably connected inside the groove. The fixed frame 1 has several sets of inclined grooves 1 at equal intervals on one side near the fixed frame 2. Each set of inclined grooves 1 has a horizontal groove 1 and a horizontal groove 2 at its beginning and end, respectively. The bottom inner wall of the horizontal groove 1 has several teeth at equal intervals.

[0011] Several sets of rotating rods are fixedly installed at equal intervals on one side of the T-shaped slide plate. One end of each set of rotating rods extends to the outside of the corresponding inclined groove and is fixedly installed with a wedge-shaped scraper. A limiting gear is fixedly installed in the middle section of the outside of the rotating rod, and the limiting gear is slidably connected inside the inclined groove. A rack is fixedly installed at the center of the side of the fixed frame away from the fixed frame.

[0012] Furthermore, a cutting plate is provided through the inside of the limiting frame, the top of the cutting plate extends to the outside of the limiting frame, and an inclined groove is provided inside the cutting plate at the upper end of the limiting frame. Several sets of toothed grooves are provided at equal intervals on the bottom surface of the cutting plate.

[0013] Furthermore, the pushing mechanism includes a motor, which is fixedly mounted on the top surface of the concave bottom frame and located on one side of the fixed frame via a mounting bracket. A double-shaft cylinder is fixedly mounted at the front output shaft of the motor, and a triangular abutment is fixedly mounted on one side of the double-shaft cylinder at the rear bearing.

[0014] Furthermore, the pushing mechanism also includes a sector-shaped toothed plate, which meshes with one side of the rack, and a hinge rod is fixedly installed on the side of the sector-shaped toothed plate away from the rack. The center of the bottom of the hinge rod is hinged to the top surface of the concave bottom frame, and a round shaft is fixedly installed on the bottom surface of the hinge rod away from the sector-shaped toothed plate. The round shaft extends to the top surface of the double-axis cylinder and is located on one side of the triangular abutment block.

[0015] Furthermore, a half-gear is fixedly installed at the end of the dual-axis cylinder away from the motor via a long rod, and a sliding frame with a loop structure is sleeved on the outside of the half-gear. Several sets of teeth are evenly arranged on the inner wall of the bottom of the sliding frame. A slider is fixedly installed at the center of the bottom of the sliding frame, and the slider is slidably connected to the inside of a groove set on one side of the top surface of the concave bottom frame. A spring damping shock absorber is fixedly installed between the slider and the inner wall of one side of the groove. A push frame with a concave structure is fixedly installed at the center of one side of the sliding frame, and convex sliding shafts are fixedly installed on the inner walls of the front and rear ends of the push frame and at the open end. The two sets of sliding shafts are slidably connected to the lower end inside the second inclined groove.

[0016] Furthermore, the top surface of the second fixed frame is 8cm higher than the top surface of the first fixed frame, and the second fixed frame is provided with an inner groove on the side of the first fixed frame and at the top, and a cleaning component is provided inside the inner groove.

[0017] Furthermore, the cleaning component includes a guide rod, which is fixedly installed inside the inner groove, and several sets of sliding rods are equidistantly sleeved on the outside of the guide rod. One end of the sliding rod extends to the opening of the inner groove and is rotatably connected to a roller wiping shaft. The roller wiping shaft is fixedly sleeved on one end of the sliding rod with a second limiting gear. The bottom of the several sets of second limiting gears meshes with a second rack fixedly installed on the inner wall of the bottom of the inner groove. The roller wiping shaft is located at the rear end of the top of the wedge-shaped scraper.

[0018] Furthermore, several sets of sleeves are fixedly sleeved at equal intervals on the outside of the guide rod, and the slide rod is arranged between two sets of sleeves. A spring coil is wound around the outside of the guide rod between the slide rod and one of the sets of sleeves.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The present invention is achieved by setting up a wedge scraper assembly and a pushing mechanism in cooperation. The motor drives the dual-shaft cylinder and the triangular abutment to rotate synchronously. The inclined surface of the triangular abutment continuously presses against the cylindrical shaft, thereby forcing the fan-shaped toothed plate to deflect. The fan-shaped toothed plate pulls the wedge scraper to move synchronously. The rotating rod slides from the inside of the inclined groove one to the inside of the transverse groove two, forcing the wedge scraper to tilt and slide down, and scraping the sludge on the bottom surface. The sludge is scraped to the bottom of the wedge scraper in the adjacent area.

[0021] When the round shaft passes over the inclined surface of the triangular abutment block and loses its pressure, the fan-shaped toothed plate resets and pulls the T-shaped slide plate and wedge scraper to reset and move. The limiting gear 1 slides from the inside of the transverse groove 2 to the inside of the inclined groove 1, forcing the wedge scraper to rise and move away from the bottom of the sedimentation tank. The limiting gear 1 slides into the inside of the transverse groove 1 and meshes with the teeth to realize the rotation of the rotating rod and the wedge scraper.

[0022] By intermittently raising and scraping the sludge, this method not only effectively removes the sludge from the bottom of the tank and reduces the sludge buildup caused by scraping dead corners, but also reduces sludge blockage at the sludge discharge outlet by segmenting and cutting the sludge. In addition, compared with the traditional scraper machine installed inside the sedimentation tank, this device can also reduce the sludge blockage of the internal structure of the scraper machine and reduce the impact on the operation of the device.

[0023] 2. The present invention also provides a cutting plate assembly that works in conjunction with a pushing structure. The half gear rotates and meshes with the sliding frame, causing the sliding frame and the pushing frame to move. The two sets of sliding shafts slide linearly along the inside of the inclined groove two and press against the bottom inner wall of the inclined groove two, forcing the cutting plate to sink downwards until the bottom tooth groove of the cutting plate extends to the lower end of the limiting frame and breaks the pushed mud blocks, thereby reducing the blockage of mud blocks at the discharge port and accelerating the discharge speed of mud blocks.

[0024] When the tooth block surface of the half gear passes the tooth groove, the sliding frame loses its meshing transmission, and the traction push frame moves in the opposite direction. The sliding shaft moves in the opposite direction along the inside of the inclined groove, forcing the cutting plate to rise and return to its position and move away from the discharge port to reduce the obstruction of sludge discharge. Repeated operation can realize the cutting plate to repeatedly cut the discharged sludge.

[0025] 3. Furthermore, the cleaning components, in conjunction with the wedge-shaped scraper, cause the wedge-shaped scraper to rotate and continuously press against the adjacent roller rubbing shaft. The roller rubbing shaft pulls the slide bar and the second limiting gear to move synchronously. During the movement, the limiting gear meshes with the second rack to achieve the rotation of the limiting gear and the roller rubbing shaft. The rotation of the roller rubbing shaft adapts to the cleaning of the wedge-shaped scraper in the rotating state, thereby assisting in removing the sludge adhering to the surface of the wedge-shaped scraper. This prevents sludge from accumulating at the bottom scraping end of the wedge-shaped scraper, which would affect the scraping effect of the sludge at the bottom of the sedimentation tank and cause corrosion. Attached Figure Description

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a top view of the overall structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the unfolded planar shape of the biaxial cylinder of the present invention;

[0030] Figure 4 This is a half-sectional view of the concave bottom frame of the present invention;

[0031] Figure 5 This is a side sectional view of the concave bottom frame and the fixing frame of the present invention.

[0032] Figure 6 This is a partial structural diagram of the combination of the concave bottom frame and the pushing mechanism of the present invention;

[0033] Figure 7 This is a side sectional view of the combination of the concave bottom frame, the limiting frame and the pushing mechanism of the present invention;

[0034] Figure 8 This is a three-dimensional schematic diagram of the combination of the fixing frame 2 and the cleaning component of the present invention.

[0035] In the diagram: 1. Concave bottom frame; 2. Opening slot; 3. Fixed frame one; 301. Groove; 302. T-shaped sliding plate; 303. Inclined groove one; 304. Horizontal groove one; 305. Horizontal groove two; 306. Rotating rod; 307. Wedge-shaped scraper; 308. Limiting gear one; 309. Rack one; 4. Fixed frame two; 401. Inner groove; 5. Limiting frame; 501. Cutting plate; 502. Inclined groove two; 6. Pushing mechanism; 61. Motor 62. Double-shaft cylinder; 63. Triangular abutment; 64. Sector-shaped toothed plate; 65. Hinge rod; 66. Round shaft; 67. Half gear; 68. Sliding frame; 69. Sliding block; 610. Slide groove; 611. Spring damping shock absorber; 612. Push frame; 613. Sliding shaft; 7. Cleaning component; 71. Guide rod; 72. Sliding rod; 73. Roller rubbing shaft; 74. Limiting gear II; 75. Rack II; 76. Sleeve; 77. Spring coil. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1 - Figure 8 As shown, a reciprocating sludge scraper for sedimentation tank includes a concave bottom frame 1, an opening groove 2, a first fixed frame 3 and a second fixed frame 4. The opening groove 2 is located at the center of the concave bottom frame 1. The first fixed frame 3 and the second fixed frame 4 are respectively opened on the top surface of the concave bottom frame 1 at the positions on both sides of the opening groove 2. A limit frame 5 is fixedly installed at the opening on one side of the opening groove 2.

[0038] A groove 301 is provided at the center of the top surface of the fixed frame 3, and a T-shaped slide plate 302 is slidably connected inside the groove 301. Several sets of inclined grooves 303 are provided at equal intervals on one side of the fixed frame 3 near the fixed frame 4. Each set of inclined grooves 303 has a horizontal groove 304 and a horizontal groove 305 at its beginning and end, respectively, and several teeth are provided at equal intervals on the bottom inner wall of the horizontal groove 304.

[0039] Several sets of rotating rods 306 are fixedly installed at equal intervals on one side of the T-shaped slide plate 302. One end of each set of rotating rods 306 extends to the outside of the corresponding inclined groove 303 and is fixedly installed with a wedge scraper 307. A limiting gear 308 is fixedly installed in the middle section of the outside of the rotating rod 306, and the limiting gear 308 is slidably connected to the inside of the inclined groove 303. A rack 309 is fixedly installed at the center of the side of the fixed frame 3 away from the fixed frame 4. First, the concave bottom frame 1 is fitted onto the top of the sedimentation tank, and several sets of wedge scrapers 307 correspond to the bottom surface of the tank. The limiting frame 5 at the end of the open groove 2 corresponds to the sludge discharge port of the sedimentation tank.

[0040] A pushing mechanism 6 is provided on the top surface of the concave bottom frame 1 at one side of the fixed frame 3. The pushing mechanism 6 includes a motor 61. The motor 61 is fixedly installed on the top surface of the concave bottom frame 1 and located on one side of the fixed frame 3 via a mounting bracket. A double-shaft cylinder 62 is fixedly installed at the front output shaft of the motor 61. A triangular abutment 63 is fixedly installed on one side of the double-shaft cylinder 62 at the rear bearing.

[0041] The pushing mechanism 6 also includes a sector toothed plate 64, which meshes with one side of the rack 309. A hinge rod 65 is fixedly installed on the side of the sector toothed plate 64 away from the rack 309. The bottom center of the hinge rod 65 is hinged to the top surface of the concave bottom frame 1. A round shaft 66 is fixedly installed on the bottom surface of the hinge rod 65 away from the sector toothed plate 64. The round shaft 66 extends to the top surface of the double-axis cylinder 62 and is located on one side of the triangular abutment block 63.

[0042] The specific scraping process includes: first, starting the motor 61, which drives the double-shaft cylinder 62 to rotate clockwise, and the triangular abutment block 63 rotates synchronously with the double-shaft cylinder 62. One side of the inclined surface of the triangular abutment block 63 continuously presses against the cylindrical shaft 66, forcing the hinge rod 65 and the fan-shaped toothed plate 64 to deflect. The fan-shaped toothed plate 64 pulls the rack 309, T-shaped slide plate 302, rotating rod 306 and wedge scraper 307 to move synchronously. The rotating rod 306 slides from the inside of the inclined groove 303 to the inside of the transverse groove 305, forcing the wedge scraper 307 to tilt and slide down, and scraping the sludge on the bottom surface.

[0043] The sludge scrapes against the bottom of the wedge scraper 307 in the adjacent area. As the dual-shaft cylinder 62 rotates continuously, the shaft 66 passes over the inclined surface of the triangular abutment block 63 and loses its pressure. Under the flipping action of the hinge force, the hinge rod 65 and the sector tooth plate 64 are reset. The sector tooth plate 64 pulls the T-shaped slide plate 302 and the wedge scraper 307 to reset and move. During this period, the limiting gear 308 slides from the inside of the transverse groove 305 to the inside of the inclined groove 303, forcing the wedge scraper 307 to rise and move away from the bottom of the sedimentation tank. At the same time, the limiting gear 308 slides into the inside of the transverse groove 304 and meshes with the teeth to realize the rotation of the rotating rod 306 and the wedge scraper 307.

[0044] By intermittently raising and scraping the sludge, this method not only effectively removes sludge from the bottom of the tank and reduces the accumulation of sludge due to dead corners, but also reduces clogging of the sludge discharge outlet by segmenting and cutting the sludge. At the same time, compared with the traditional scraper machine installed inside the sedimentation tank, this device can also reduce the sludge clogging of the internal structure of the scraper machine and reduce the impact on the operation of the device.

[0045] Example 2: Please refer to Figure 6 - Figure 7 As shown, a cutting plate 501 is provided through the inside of the limiting frame 5. The top of the cutting plate 501 extends to the outside of the limiting frame 5, and an inclined groove 502 is provided inside the cutting plate 501 at the upper position of the limiting frame 5. Several sets of toothed grooves are provided at equal intervals on the bottom surface of the cutting plate 501.

[0046] A half gear 67 is fixedly installed at the end of the dual-shaft cylinder 62 away from the motor 61 via a long rod, and a sliding frame 68 with a loop structure is sleeved on the outside of the half gear 67. Several sets of teeth are evenly arranged on the inner wall of the bottom of the sliding frame 68. A slider 69 is fixedly installed at the center of the bottom of the sliding frame 68, and the slider 69 is slidably connected to the inside of the sliding groove 610 set on one side of the top surface of the concave bottom frame 1. A spring damping shock absorber 611 is fixedly installed between the slider 69 and the inner wall of one side of the sliding groove 610. A push frame 612 with a concave structure is fixedly installed at the center of one side of the sliding frame 68, and a convex sliding shaft 613 is fixedly installed on the inner walls of the front and rear ends of the push frame 612 and at the open end. The two sets of sliding shafts 613 are slidably connected to the lower end of the inclined groove 502.

[0047] While the motor 61 drives the dual-shaft cylinder 62 to rotate, it also drives the half gear 67 to rotate synchronously. The half gear 67 meshes with the teeth on the bottom inner wall of the slide frame 68 to realize the movement of the slide frame 68 and the push frame 612. The slider 69 moves along the inside of the slide groove 610, causing the spring damping shock absorber 611 to be compressed. The push frame 612 moves through the outside of the cutting plate 501, forcing the two sets of sliding shafts 613 to slide linearly along the inside of the inclined groove 502. The sliding shafts 613 press against the bottom inner wall of the inclined groove 502, forcing the cutting plate 501 to sink downwards until the bottom tooth groove of the cutting plate 501 extends to the lower end of the limit frame 5 and breaks the pushed mud blocks, thereby reducing the blockage of mud blocks at the discharge port and accelerating the discharge speed of mud blocks.

[0048] It is worth noting that when the tooth block surface of the half gear 67 passes the tooth groove, the sliding frame 68 loses its meshing transmission and is reset by the rebound force of the spring damping shock absorber 611, which pulls the push frame 612 to move in the opposite direction. At the same time, the sliding shaft 613 moves in the opposite direction along the inside of the inclined groove 502, forcing the cutting plate 501 to rise and return to its original position and move away from the discharge port, thereby reducing the obstruction to the sludge discharge. Repeated operation can enable the cutting plate 501 to repeatedly cut the discharged sludge.

[0049] Example 3: Please refer to Figure 2 , Figure 5 - Figure 7 As shown, the top surface height of the second fixed frame 4 exceeds the top surface height of the first fixed frame 3 by 8cm, and the second fixed frame 4 has an inner groove 401 on the side close to the first fixed frame 3 and at the top, and a cleaning component 7 is provided inside the inner groove 401.

[0050] The cleaning component 7 includes a guide rod 71, which is fixedly installed inside the inner groove 401. Several sets of sliding rods 72 are sleeved at equal intervals on the outside of the guide rod 71. One end of the sliding rod 72 extends to the groove opening of the inner groove 401 and is rotatably connected to a roller rubbing shaft 73. The roller rubbing shaft 73 is fixedly sleeved at one end of the sliding rod 72 with a second limiting gear 74. The bottom of the several sets of second limiting gears 74 meshes with a second rack 75 fixedly installed on the inner wall of the bottom of the inner groove 401.

[0051] The roller wiping shaft 73 is located at the rear end of the top of the wedge scraper 307. Several sets of sleeves 76 are fixedly sleeved at equal intervals on the outside of the guide rod 71, and the slide rod 72 is set between two sets of sleeves 76. A spring coil 77 is wound around the outside of the guide rod 71 between the slide rod 72 and one of the sets of sleeves 76.

[0052] During the flipping process of the wedge scraper 307, it continuously presses against the adjacent roller rubbing shaft 73. Due to the pressure from the wedge scraper 307, the roller rubbing shaft 73 pulls the slide rod 72 and the second limiting gear 74 to move synchronously. The slide rod 72 slides along the outside of the guide rod 71 and presses against the spring coil 77 to compress it. During the movement, the limiting gear 74 meshes with the second rack 75 to realize the rotation of the limiting gear 74 and the roller rubbing shaft 73. The rotation of the roller rubbing shaft 73 adapts to the cleaning of the wedge scraper 307 in the rotating state, so as to help remove the sludge adhering to the surface of the wedge scraper 307, so as to prevent sludge from accumulating at the bottom scraping end of the wedge scraper 307, which would affect the scraping effect of the sludge at the bottom of the sedimentation tank and cause its own corrosion. At the same time, the rotation of the roller rubbing shaft 73 helps to clean the sludge clumps adhering to the wedge scraper 307.

[0053] When using this invention, the concave bottom frame 1 is first fitted onto the top of the sedimentation tank, and several sets of wedge scrapers 307 are aligned vertically with the bottom surface of the tank. The limiting frame 5 at the end of the opening groove 2 is aligned vertically with the sludge discharge port of the sedimentation tank.

[0054] Next, the motor 61 is started to drive the double-shaft cylinder 62 to rotate clockwise, and the triangular abutment block 63 rotates synchronously with the double-shaft cylinder 62. One side of the inclined surface of the triangular abutment block 63 continuously presses against the cylindrical shaft 66, forcing the hinge rod 65 and the sector tooth plate 64 to deflect. The sector tooth plate 64 pulls the rack 309, T-shaped slide plate 302, rotating rod 306 and wedge scraper 307 to move synchronously. The rotating rod 306 slides from the inside of the inclined groove 303 to the inside of the transverse groove 305, forcing the wedge scraper 307 to tilt and slide down, and scrape the sludge on the bottom surface.

[0055] The sludge scrapes against the bottom of the wedge scraper 307 in the adjacent area. As the dual-shaft cylinder 62 rotates continuously, the shaft 66 passes over the inclined surface of the triangular abutment block 63 and loses its pressure. Under the flipping action of the hinge force, the hinge rod 65 and the sector tooth plate 64 are reset. The sector tooth plate 64 pulls the T-shaped slide plate 302 and the wedge scraper 307 to reset and move. During this period, the limiting gear 308 slides from the inside of the transverse groove 305 to the inside of the inclined groove 303, forcing the wedge scraper 307 to rise and move away from the bottom of the sedimentation tank. At the same time, the limiting gear 308 slides into the inside of the transverse groove 304 and meshes with the teeth to realize the rotation of the rotating rod 306 and the wedge scraper 307. This process is repeated to achieve intermittent lifting and scraping of sludge.

[0056] At the same time, the half gear 67 rotates with the double-shaft cylinder 62 and meshes with the slide frame 68 to realize the movement of the slide frame 68 and the push frame 612. The slider 69 moves along the inside of the slide groove 610, causing the spring damping shock absorber 611 to be compressed, and the push frame 612 moves through the outside of the cutting plate 501, forcing the two sets of slide shafts 613 to slide linearly along the inside of the inclined groove 502. The slide shafts 613 press against the bottom inner wall of the inclined groove 502, forcing the cutting plate 501 to sink downward until the bottom tooth groove of the cutting plate 501 extends to the lower end of the limiting frame 5 and crushes the pushed mud, thereby reducing the blockage of mud at the discharge port.

[0057] As the wedge scraper 307 flips over, it continuously presses against the adjacent roller rubbing shaft 73. The roller rubbing shaft 73 is pulled by the wedge scraper 307, and the sliding rod 72 and the second limiting gear 74 move synchronously. The sliding rod 72 slides along the outside of the guide rod 71 and presses against the spring coil 77 to compress it. The limiting gear 74 meshes with the second rack 75 during the movement, thereby realizing the rotation of the limiting gear 74 and the roller rubbing shaft 73. The rotation of the roller rubbing shaft 73 is adapted to the cleaning of the wedge scraper 307 in the rotating state, so as to help remove the sludge adhering to the surface of the wedge scraper 307 and prevent sludge from accumulating at the bottom scraping end of the wedge scraper 307.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A reciprocating sludge scraper for sedimentation tanks, comprising a concave bottom frame (1), an opening groove (2), a first fixed frame (3), and a second fixed frame (4), wherein the opening groove (2) is located at the center of the concave bottom frame (1), and the first fixed frame (3) and the second fixed frame (4) are respectively located on both sides of the opening groove (2) on the top surface of the concave bottom frame (1), characterized in that: A limiting frame (5) is fixedly installed at the opening on one side of the opening groove (2), and a pushing mechanism (6) is provided on the top surface of the concave bottom frame (1) at one side of the fixed frame (3). Among them, a groove (301) is provided at the center of the top surface of the fixed frame 1 (3), and a T-shaped sliding plate (302) is slidably connected inside the groove (301). Several sets of inclined grooves 1 (303) are provided at equal distances on one side of the fixed frame 1 (3) near the fixed frame 2 (4). Each set of inclined grooves 1 (303) has a horizontal groove 1 (304) and a horizontal groove 2 (305) respectively provided at the beginning and end. Several teeth are provided at equal distances on the bottom inner wall of the horizontal groove 1 (304). Several sets of rotating rods (306) are fixedly installed at equal intervals on one side of the T-shaped sliding plate (302). One end of each set of rotating rods (306) extends to the outside of the corresponding inclined groove (303) and is fixedly installed with a wedge-shaped scraper (307). A limiting gear (308) is fixedly installed in the middle section outside the rotating rod (306), and the limiting gear (308) is slidably connected inside the inclined groove (303). A rack (309) is fixedly installed at the center of the side of the fixed frame (3) away from the fixed frame (4). The pushing mechanism (6) includes a motor (61), which is fixedly installed on the top surface of the concave bottom frame (1) and located on one side of the fixed frame (3) by a mounting bracket. A double-shaft cylinder (62) is fixedly installed at the front output shaft of the motor (61), and a triangular abutment (63) is fixedly installed on one side of the double-shaft cylinder (62) at the rear bearing. The pushing mechanism (6) also includes a fan-shaped toothed plate (64), which meshes with one side of the rack (309), and a hinge rod (65) is fixedly installed on the side of the fan-shaped toothed plate (64) away from the rack (309). The bottom center of the hinge rod (65) is hinged to the top surface of the concave bottom frame (1), and a round shaft (66) is fixedly installed on the bottom surface of the hinge rod (65) away from the fan-shaped toothed plate (64). The round shaft (66) extends to the top surface of the double-axis cylinder (62) and is located on one side of the triangular abutment block (63).

2. The reciprocating sludge scraper for sedimentation tank according to claim 1, characterized in that, A cutting plate (501) is provided inside the limiting frame (5). The top of the cutting plate (501) extends to the outside of the limiting frame (5). An inclined groove (502) is provided inside the cutting plate (501) at the upper end of the limiting frame (5). Several sets of toothed grooves are provided at equal intervals on the bottom surface of the cutting plate (501).

3. The reciprocating sludge scraper for sedimentation tank according to claim 1, characterized in that, The end of the dual-axis cylinder (62) away from the motor (61) is fixedly mounted with a half gear (67) by a long rod, and a sliding frame (68) with a loop structure is sleeved on the outside of the half gear (67). Several sets of teeth are evenly arranged on the bottom inner wall of the sliding frame (68). A slider (69) is fixedly mounted at the bottom center of the sliding frame (68), and the slider (69) is slidably connected to the inside of the sliding groove (610) set on one side of the top surface of the concave bottom frame (1). A spring damping shock absorber (611) is fixedly mounted between the slider (69) and the inner wall of one side of the sliding groove (610). A push frame (612) with a concave structure is fixedly mounted at the center of one side of the sliding frame (68), and a convex sliding shaft (613) is fixedly mounted on the inner wall of the front and rear ends of the push frame (612) and at the open end. The two sets of sliding shafts (613) are slidably connected to the lower end of the inclined groove two (502).

4. The reciprocating sludge scraper for sedimentation tank according to claim 1, characterized in that, The top surface height of the second fixed frame (4) exceeds the top surface height of the first fixed frame (3) by 5-10cm, and the second fixed frame (4) is provided with an inner groove (401) on the side close to the first fixed frame (3) and at the top. A cleaning component (7) is provided inside the inner groove (401).

5. A reciprocating sludge scraper for sedimentation tanks according to claim 4, characterized in that, The cleaning component (7) includes a guide rod (71), which is fixedly installed inside the inner groove (401). Several sets of sliding rods (72) are sleeved at equal intervals on the outside of the guide rod (71). One end of the sliding rod (72) extends to the groove opening of the inner groove (401) and is rotatably connected to a roller rubbing shaft (73). The roller rubbing shaft (73) is fixedly sleeved at one end of the sliding rod (72) with a second limiting gear (74). The bottom of several sets of the second limiting gears (74) meshes with a second rack (75) fixedly installed on the inner wall of the bottom of the inner groove (401). The roller rubbing shaft (73) is located at the rear end of the top of the wedge-shaped scraper (307).

6. A reciprocating sludge scraper for sedimentation tanks according to claim 5, characterized in that, The guide rod (71) is fixedly sleeved with several sets of sleeves (76) at equal intervals on the outside, and the slide rod (72) is set between two sets of sleeves (76). A spring coil (77) is wound around the outside of the guide rod (71) between the slide rod (72) and one of the sets of sleeves (76).

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