Rotary anti-leakage trash remover

Abstract

The utility model provides a rotary anti-leakage trash remover. The rotary anti-leakage trash remover comprises a rack, a tooth rake, a main grid, a bottom grid, an auxiliary grid and a driving mechanism, the main grid is arranged in the middle of the rack; the bottom grid is arranged on the front side of the lower part of the rack; the lower end of the auxiliary grid is hinged to the bottom grid, and the upper end of the auxiliary grid abuts against the main grid; the driving mechanism drives the tooth rake to rotate around the main grid, and the tooth rake pushes the upper end of the auxiliary grid away from the main grid when the tooth rake abuts against the upper end of the auxiliary grid in the process of moving from bottom to top; when the tooth rake leaves the auxiliary grid, the upper end of the auxiliary grid recovers to abut against the main grid. According to the rotary trash remover, the auxiliary grid is hinged to the bottom grid, the upper end of the auxiliary grid abuts against the main grid, a closed trash blocking body is formed, and the problem that trash leaks from the position between the bottom grid and the main grid is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy sewage cleaning machinery, in particular to a rotary anti-leakage sewage cleaning machine. Background Art

[0002] A rotary sewage cleaning machine is an automated sewage treatment device, mainly used to remove large suspended solids and floating objects in sewage to protect the normal operation of subsequent process equipment and reduce the treatment load. It is widely used in sewage treatment facilities such as municipal and industrial ones, such as water intake pump stations for water supply, rainwater and sewage pump stations, urban flood control and drainage pump stations, intake pump stations of sewage treatment plants, cooling water intake ports of power plants, etc., and has the characteristics of high automation degree, high efficiency of dirt separation, low power consumption, low working noise, and good corrosion resistance.

[0003] A rotary sewage cleaning machine mainly consists of a frame, a main grid, a sewage cleaning tooth rake, a lifting chain, a motor reduction drive device, etc. During operation, the sewage cleaning tooth rake picks up the dirt intercepted by the underwater grid part (bottom grid) under the drive of the drive device, and then relies on the synchronous lifting chains on both sides to rotate clockwise from behind the main grid to in front of the main grid. After the tooth rake reaches the highest point of the main grid, it will turn over, and the dirt can fall by gravity onto the dirt transportation equipment and be discharged or discharged by other means to achieve the purpose of decontamination. However, in order to ensure that the tooth rake can rotate smoothly between the bottom grid and the main grid, there is a relatively large gap between the bottom grid and the main grid body in the existing rotary sewage cleaning machine. However, when there is no tooth rake between the main grid body and the bottom grid, the dirt is likely to flow through this gap to the downstream, which will endanger the operation of the downstream units. Content of the Utility Model

[0004] The utility model provides a method for preventing leakage of dirt in a rotary sewage cleaning machine and a rotary sewage cleaning machine to solve at least one of the above problems.

[0005] According to one aspect of the utility model, a rotary sewage cleaning machine is provided, which includes a frame, a tooth rake, a main grid, a bottom grid, a secondary grid, and a drive mechanism; the main grid is arranged in the middle of the frame; the bottom grid is arranged at the front side of the lower part of the frame; the lower end of the secondary grid is hinged to the bottom grid, and the upper end abuts against the main grid; the drive mechanism drives the tooth rake to make a rotary motion around the main grid, and is configured such that when the tooth rake abuts against the upper end of the secondary grid during the upward movement from bottom to top, the tooth rake pushes the upper end of the secondary grid away from the main grid; when the tooth rake leaves the secondary grid, the upper end of the secondary grid resumes abutting against the main grid.

[0006] The secondary grid of the rotary sewage cleaning machine of the utility model is hinged to the bottom grid, and the upper end of the secondary grid abuts against the main grid, forming a closed dirt interception body, effectively solving the problem of dirt leaking from between the bottom grid and the main grid.

[0007] In some embodiments, the tooth rake of the present utility model includes a plurality of rake teeth, a rake tooth shaft, and an anti-twist plate; the rake teeth have an annular rake tooth body, and the outer side of the rake tooth body is provided with dirt-lifting teeth and dirt-scraping teeth, and the included angle between the axes of the dirt-scraping teeth and the dirt-lifting teeth is 90-150°; a anti-twist groove communicating with the inner cavity of the rake tooth body is provided at the bottom of each of the dirt-scraping teeth and the dirt-lifting teeth; the rake tooth shaft is integrally cylindrical, and two anti-twist plates having a length equivalent to that of the rake tooth shaft are provided on the outer side of the rake tooth shaft; the rake tooth body of the rake tooth is sleeved on the rake tooth shaft, and the anti-twist groove is sleeved on the anti-twist plate. The traditional tooth rake welds the rake teeth on the rake tooth shaft, which is relatively difficult to manufacture, easily damaged, and troublesome to repair after damage, and requires the whole to be removed and re-welded. The rake teeth of the present utility model can be integrally cut by laser, with fast processing; the rake teeth are sleeved on the rake tooth shaft, and the installation method; no holes need to be drilled on the rake tooth shaft, which will not affect its stress; if a certain rake tooth is damaged, only need to remove it and replace it with a new rake tooth, which is convenient for maintenance.

[0008] In some embodiments, positioning shaft holes are respectively provided above the anti-twist grooves of the dirt-lifting teeth and the dirt-scraping teeth of the present utility model, and a positioning sleeve shaft is inserted through the positioning shaft holes; a positioning sleeve is sleeved between adjacent rake teeth on the positioning sleeve shaft. The setting of the positioning sleeve can fix the position of the rake teeth, and it is also convenient for positioning the rake teeth during installation.

[0009] In some embodiments, the diameter of the positioning sleeve provided between the dirt-scraping teeth of the rake teeth at the outermost edge of the rake tooth shaft of the present utility model is larger than that of the positioning sleeve in the middle of the rake tooth shaft. In this way, when the tooth rake abuts against the secondary grid, the positioning sleeve provided between the dirt-scraping teeth of the rake teeth at the outermost edge of the rake tooth shaft will abut against the secondary grid bars, while the positioning sleeve in the middle of the rake tooth shaft will not contact the secondary grid bars. The positioning sleeve at the edge of the rake tooth shaft is convenient to replace after being worn, and this setting can prevent the positioning sleeve in the middle of the rake tooth shaft from being worn.

[0010] In some embodiments, detachable end plates are respectively provided at both ends of the rake tooth shaft of the present utility model. The end plates of the rake tooth shaft are set to be detachably connected, which is convenient for maintenance and replacement when the rake teeth are damaged.

[0011] In some embodiments, buffer grid bars are provided at both ends of the secondary grid of the present utility model, and a round steel is provided on the side of the buffer grid bar close to the main grid, and the free end of the round steel protrudes from the end face on the side of the secondary grid bar close to the main grid. Due to the action of water flow and eccentricity, the top of the secondary grid will abut against the main grid bar again after the tooth rake leaves. The setting of the round steel can prevent the secondary grid from directly impacting the main grid bar when resetting, causing wear to the main grid bar, and can extend the service life of the main grid bar.

[0012] In some embodiments, buffer rubbers are provided on the frame of the present utility model at positions opposite to the round steel. The setting of buffer rubbers at positions opposite to the round steel can weaken the impact force on the frame and the main grid bar when the secondary grid is reset.

[0013] In some embodiments, one end of the buffer rubber of the present utility model is fixedly connected to the frame, and the other end is suspended downward to form a suspended section; an arc surface is provided at a position on the frame opposite to the suspended section; the round steel is arranged opposite to the suspended section of the buffer rubber. This setting can further weaken the impact force on the frame and the main grid bars during the reset of the secondary grid. When the round steel contacts the suspended section of the buffer rubber, the impact force of the secondary grid is weakened. When the suspended section of the buffer rubber contacts the arc surface provided on the frame backward, the impact force of the secondary grid is further weakened.

[0014] In some embodiments, chain grooves are respectively provided on both sides of the main grid of the present utility model, and two first drive chains are respectively installed in the left and right chain grooves. Both ends of the tooth rake are respectively fixedly connected to the two first drive chains; a sliding groove is provided on the side of the chain groove, and rollers that roll along the sliding groove are provided at both ends of the tooth rake. By providing pulleys at both ends of the tooth rake and corresponding sliding grooves on the frame, the situation where the cleaning machine operation is blocked due to the deviation of the rake teeth can be prevented.

[0015] In some embodiments, a sliding bearing is provided inside the hinge joint between the secondary grid and the bottom grid of the present utility model, and an anti-pollution cover is provided outside. This setting can prevent the situation where dirt enters the hinge joint and causes the rotation of the secondary grid to be restricted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a rotary anti-leakage and pollution cleaning machine according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a schematic structural diagram of the rotary anti-leakage and pollution cleaning machine shown from another angle;

[0018] Figure 3 is a schematic structural diagram of the secondary grid of a rotary anti-leakage and pollution cleaning machine according to an embodiment of the present utility model;

[0019] Figure 4 is a schematic partial structural diagram of a rotary anti-leakage and pollution cleaning machine according to an embodiment of the present utility model;

[0020] Figure 5 is Figure 3 a schematic diagram of the state when the tooth rake of the rotary anti-leakage and pollution cleaning machine shown contacts the secondary grid;

[0021] Figure 6 is Figure 3 a schematic diagram of the state of the buffer device of the rotary anti-leakage and pollution cleaning machine after the tooth rake leaves the secondary grid;

[0022] Figure 7 is Figure 3 a schematic partial structural diagram of the buffer device of the rotary anti-leakage and pollution cleaning machine shown;

[0023] Figure 8 Partial structural schematic diagram of the rake of the rotary anti-leakage and pollution cleaning machine according to an embodiment of the present utility model;

[0024] Figure 9 is Figure 8 Exploded structural schematic diagram of the rake of the rotary anti-leakage and pollution cleaning machine shown;

[0025] Figure 10 is Figure 8 Structural schematic diagram of the integral rake teeth of the rake shown;

[0026] Figure 11 is Figure 8 Structural schematic diagram of the roller shaft shown. Specific embodiments

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0029] Finally, it should also be noted that in this article, relational terms such as first and second, counterclockwise and clockwise, forward and reverse are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include" and "comprise", not only include those elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method, article or device. Without further limitations, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the said elements.

[0030] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] Figure 1 and Figure 2 Schematically shows the structure of a rotary anti-leakage and pollution cleaning machine according to an embodiment of the present utility model.

[0032] Refer to Figure 1and Figure 2 As shown, the rotary anti-leakage and pollution cleaning machine includes a frame 10, a tooth rake 30, a main grid 41, a bottom grid 42, a secondary grid 43, and a driving mechanism 20.

[0033] The frame 10 is generally in the shape of a long rectangle, and its top is arc-shaped and slopes backward. The width of the frame 10 can be set according to the actual needs of the water conservancy project.

[0034] The main grid 41 is arranged in the middle of the frame 10. The main grid bars of the main grid 41 are parallel to each other, evenly spaced, and vertically arranged. The lower end of the main grid 41 is usually set underwater. An arc-shaped back plate 11 is arranged above the main grid 41.

[0035] The bottom grid 42 is arranged at the front side of the lower part of the frame 10 and is below the water surface. The upper end of the bottom grid 42 is provided with a first hinge plate 425. The gap between the bottom grid 42 and the main grid 41 should be sufficient for the tooth rake 30 to pass through smoothly. The height of the secondary grid 43 is greater than the gap between the bottom grid 42 and the main grid 41. During the process when the tooth rake 30 touches the secondary grid 43 until it leaves the secondary grid 43, the upper end of the secondary grid 43 always leans towards the main grid 41.

[0036] The secondary grid 43 is inclined, with its lower end hinged to the upper end of the bottom grid 41 and its upper end abutted against the main grid 41. Both the secondary grid 43 and the bottom grid 41 are used to intercept the dirt in the water.

[0037] The main grid 41, the secondary grid 43, and the bottom grid 42 form a closed dirt interception body.

[0038] The driving mechanism 20 drives the tooth rake 30 to make a rotary motion around the main grid 41. On the side of the main grid 41 facing the secondary grid, the tooth rake 30 moves from bottom to top; on the other side of the main grid 41, the tooth rake 30 moves from top to bottom. During the process when the tooth rake 30 turns downward, the dirt it brings up from the bottom grid 42, the secondary grid 43, and the main grid 41 can be dumped onto the separately provided sewage disposal equipment and carried away.

[0039] During the upward movement of the tooth rake 30, it will pass through the gap between the main grid 41 and the bottom grid 42. When the tooth rake 30 abuts against the upper end of the secondary grid 43, the tooth rake 30 will push the upper end of the secondary grid 43 away from the main grid 41. After the tooth rake 30 continues to move upward and leaves the secondary grid 43, due to the action of water flow and eccentricity, the upper end of the secondary grid 43 resumes abutting against the main grid 41.

[0040] In this embodiment, the driving mechanism 20 includes a motor 27, a first transmission chain 21, a second transmission chain 22, a first transmission wheel 23, a second transmission wheel 24, a third transmission wheel 25, and a transmission rod 26. In other embodiments, the driving mechanism can also adopt hydraulic or pneumatic transmission to drive the tooth rake 30 to make an up-and-down rotary motion around the main grid 41.

[0041] The first driving wheel 23 is fixedly connected to the mover of the motor 27, and the motor 27 drives the first driving wheel to rotate.

[0042] On the left and right sides of the frame 10, a chain groove is respectively arranged, and the chain groove surrounds the side of the main grid 41. Two first driving chains 21 are respectively installed in the left and right chain grooves. Both ends of the rake 30 are respectively fixedly connected to the two first driving chains 21, and the rake teeth of the rake 30 can extend into the gaps between the main grid bars. A plurality of rakes 30 are arranged at intervals on the first driving chain 21. With the drive of the drive mechanism 20, the rakes 30 continuously carry away the dirt remaining on the secondary grid 43 and the main grid 41.

[0043] The transmission rod 26 is arranged at the top of the frame 10 and spans the upper part of the main grid 41. Two third driving wheels 25 are respectively fixedly connected to both ends of the transmission rod 26, and the two first driving chains 21 are respectively sleeved on the third driving wheels 25. At the outer end of the third driving wheel 25 on the right side of the transmission rod 26, a second driving wheel 24 is fixedly arranged. The first driving wheel 23 is connected to the second driving wheel 24 through a second driving chain 22 sleeved on them.

[0044] Steering wheels are respectively arranged at the lower parts of the two chain grooves, and the first driving chain 21 is sleeved on the steering wheels.

[0045] The motor 27 starts, drives the first driving wheel 23 to rotate, the first driving wheel 23 drives the second driving wheel 24 to rotate through the second driving chain 22, the second driving wheel 24 drives the two third driving wheels 25 to rotate through the transmission rod 26, the two third driving wheels 25 respectively drive the two first driving chains 21 installed in the two chain grooves to perform a rotary motion, and the two first driving chains 21 drive the rake 30 to perform a rotary motion around the main grid 41.

[0046] Figure 3 Schematically shows the structure of the secondary grid of the rotary anti-leakage and dirt-cleaning machine according to an embodiment of the present invention.

[0047] Reference Figure 3As shown, the auxiliary grid 43 includes a plurality of auxiliary grid bars 431 that are parallel to each other, evenly spaced, and vertically arranged. The lower ends of the auxiliary grid bars 431 are welded to the support plate 434. The cross-section of the support plate 434 is L-shaped, and the lower ends and the lower part of one side of the auxiliary grid bars 431 are welded to the support plate 434. A buffer grid bar 432 is provided at each end of the auxiliary grid 43. A round steel 433 for triggering buffering is provided on the side of the buffer grid bar 432 close to the main grid. The end face of the free end of the round steel 433 protrudes beyond the rear end face of the auxiliary grid bar 431. The auxiliary grid bars 431 are inserted through the support rods 436. Two second hinge plates 435 are provided at the lower end of the support plate 434, which are adapted to the positions of the first hinge plates 425 on the bottom grid 42 for hinging with the bottom grid 42. Anti-pollution covers are sleeved outside the first hinge plates 425 and the second hinge plates 435, and sliding bearings are provided inside to prevent dirt from entering the hinge part and affecting the rotation of the auxiliary grid 43. The rotation range between the first hinge plate 425 and the second hinge plate 435 can be set so that the rotation range of the auxiliary grid 43 is between the top end touching the main grid 41 and the auxiliary grid 43 being in a vertical state, so that when the auxiliary grid 43 does not contact the rake 30, its top end can always abut against the main grid 41 due to the impact of water flow.

[0048] Figure 4 Schematically shows the partial structure of a rotary anti-leakage and pollution cleaning machine according to an embodiment of the present invention.

[0049] Reference Figure 4 As shown, a semi-circular turning cover 12 for chain turning is provided at the lower end of the chain slot of the cleaning machine, and a buffer rubber 50 is provided on the front end face of the turning cover 12. Reference Figure 7 As shown, one end of the buffer rubber 50 is fixedly connected to the turning cover 12, and the other end hangs downward.

[0050] When the cleaning machine is not started, the upper end of the auxiliary grid 43 abuts against the main grid 41, and the round steel 433 on the buffer grid bar 432 abuts against the hanging section 51 of the buffer rubber 50.

[0051] Figure 5 Schematically shows Figure 4 The state of the cleaning machine shown when the rake contacts the auxiliary grid.

[0052] Reference Figure 5As shown, the rake 30 moves upward along the chain slot driven by the first transmission chain 21. When the rake 30 contacts the secondary grid 43, due to the driving force of the rake 30, the secondary grid 43 rotates around the hinge axis, and the upper end of the secondary grid 43 will leave the main grid 41. The rake teeth of the rake 30 can extend into the gaps between the secondary grid bars 431, and the rake 30 will carry away the dirt retained on the secondary grid 43. After the rake 30 moves to the top of the main grid 41, it will turn over, and the angle between the dirt scraping teeth 311 and the dirt lifting teeth 312 is downward, and the attached dirt can be dumped onto the dirt conveying device arranged at the rear side of the frame and taken away.

[0053] Figure 6 Schematically shows Figure 5 the state of the rake of the dirt cleaning machine shown after leaving the secondary grid.

[0054] Refer to Figure 6 As shown, after the rake 30 leaves the top of the secondary grid 43, due to the action of gravity and water flow, the secondary grid 43 rotates around the hinge axis, and the top of the secondary grid 43 approaches the main grid 41. Since the free end of the round steel 433 provided at the front end of the buffer grid bar 432 protrudes from the rear end face of the secondary grid bar 431, before the top of the secondary grid bar 431 contacts the main grid bar, the round steel 433 first touches the suspended section 51 of the buffer rubber 50 and pushes the suspended section 51 of the buffer rubber 50 towards the arc surface of the turning cover 12, further enhancing the buffering effect. This setting can prevent the top of the secondary grid bar 431 from hard contacting the main grid bar, reduce the wear of the main grid bar and the secondary grid bar 431, and play a protective role for the main grid 41 and the secondary grid 43. In other embodiments, the arc surface can be arranged on other components of the frame 10 as long as the position corresponds to the suspended section 51 of the buffer rubber 50.

[0055] Figures 8 - 10 Schematically shows the structure of the rake of the rotary anti-leakage dirt cleaning machine according to an embodiment of the present invention.

[0056] Since the structure of the rake 30 is symmetrical, Figure 8 only one end of the rake 30 is shown. Refer to Figure 8 and Figure 9 As shown, the rake 30 includes a plurality of rake teeth 31, a rake tooth shaft 35, end plates 32, rollers 33, anti-twist plates 36, a positioning sleeve shaft 37, a first positioning sleeve 381 and a second positioning sleeve 382.

[0057] Refer to Figure 10As shown, the rake tooth 31 has an annular rake tooth body 316. An upward dirt-lifting tooth 312 and a dirt-scraping tooth 311 are arranged on the outer side of the rake tooth body 316. The included angle between the axes of the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312 can be 90 - 150°. In this embodiment, the included angle between the axes of the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312 is 120°. When the tooth rake 30 moves upward from bottom, the included angle between the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312 faces upward. Setting the included angle between the axes of the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312 to 120° can enable the rake tooth 31 to scoop up as much dirt as possible each time, and reduce the dropping of dirt during the process of lifting the dirt.

[0058] A torsion-proof groove 314 communicating with the inner cavity 315 of the body is arranged at the bottom of each of the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312, and positioning shaft holes 313 are respectively arranged above the torsion-proof grooves 314. The rake tooth 31 can be integrally laser cut, with fast and accurate processing and good stress resistance. The rake tooth 31 is sleeved on the rake tooth shaft 35 without affecting the stress of the rake tooth shaft 35.

[0059] The rake tooth shaft 35 is integrally cylindrical, and its diameter is adapted to the inner diameter of the rake tooth body 316 of the rake tooth 31. Two torsion-proof plates 36 equivalent in length to the rake tooth shaft 35 are arranged on the outer side of the rake tooth shaft 35. The positions and shapes of the two torsion-proof plates 36 are respectively adapted to the positions and shapes of the torsion-proof grooves 314 of the dirt-scraping tooth 311 and the upward dirt-lifting tooth 312. The arrangement of the torsion-proof plates 36 can enhance the rigidity of the rake tooth 31.

[0060] A detachable end plate 32 is arranged at each end of the rake tooth shaft 35. The end plate 32 is connected to the end face of the rake tooth shaft 35 through a double-headed bolt 341. The detachable connection between the end plate 32 and the rake tooth shaft can facilitate the replacement of the damaged rake tooth 31.

[0061] The outer diameter of the positioning sleeve shaft 37 is adapted to the inner diameter of the positioning shaft hole 313 of the rake tooth 31, and is also adapted to the inner diameters of the first positioning sleeve 381 and the second positioning sleeve 382.

[0062] The rake tooth body 316 is sleeved on the rake tooth shaft 35, the torsion-proof groove 314 is sleeved on the torsion-proof plate 36, and the positioning sleeve shaft 37 passes through the positioning shaft hole 313 of the rake tooth 31. A positioning sleeve is sleeved on the positioning sleeve shaft 37 between adjacent rake teeth 31. External threads are arranged at both ends of the positioning sleeve shaft 37, and the rake tooth 31 and the positioning sleeve are clamped by screwing double nuts 342 from both ends. The diameter of the first positioning sleeve 381 arranged between the dirt-scraping teeth 311 of the three rake teeth 31 at the outermost edge of the rake tooth shaft 35 is larger than that of the second positioning sleeve 382 in the middle of the rake tooth shaft 35. This setting can reduce the wear of the second positioning sleeve 382. Since it is more convenient to replace the first sleeve 381 due to wear than to replace the second sleeve 382.

[0063] A chute is provided on the side of the chain groove. Two rollers 33 respectively arranged at both ends of the tooth rake 30 roll along the chutes on both sides, which can prevent the tooth rake 30 from yawing and causing obstruction to the operation of the machine. A shaft stopping surface 332 perpendicular to the end face is provided on the end face of the roller shaft 331 of the roller 33, and the shaft stopping surface 332 abuts against the end plate 32.

[0064] The spacing of the rake teeth 31 is the same as the spacing of the secondary grid bars and the main grid bars. The dirt scraping teeth 311 of the rake teeth 31 can be inserted between the secondary grid bars, and the dirt lifting teeth 312 of the rake teeth 31 can be inserted between the main grid bars.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. Rotary anti-leakage and pollution-cleaning machine, characterized in that, It includes a frame, a rake, a main grid, a bottom grid, a sub-grid and a driving mechanism; The main grid is arranged in the middle of the frame; The bottom grid is arranged at the front side of the lower part of the frame; The lower end of the sub-grid is hinged to the bottom grid, and the upper end abuts against the main grid; The driving mechanism drives the rake to make an up-and-down rotary motion around the main grid, and is configured such that when the rake abuts against the upper end of the sub-grid during the upward movement from bottom to top, the rake pushes the upper end of the sub-grid away from the main grid; when the rake leaves the sub-grid, the upper end of the sub-grid resumes abutting against the main grid.

2. The rotary anti-leakage and pollution cleaning machine according to claim 1, characterized in that The rake includes a plurality of rake teeth, a rake tooth shaft, and an anti-twist plate; The rake teeth have an annular rake tooth body, and a dirt-lifting tooth and a dirt-scraping tooth are arranged on the outer side of the rake tooth body, and the included angle between the axes of the dirt-scraping tooth and the dirt-lifting tooth is 90 - 150°; A anti-twist groove communicating with the inner cavity of the rake tooth body is arranged at the bottom of each of the dirt-scraping tooth and the dirt-lifting tooth; The rake tooth shaft is integrally cylindrical, and two anti-twist plates equivalent to the length of the rake tooth shaft are arranged on the outer side of the rake tooth shaft; The rake tooth body is sleeved on the rake tooth shaft, and the anti-twist groove is sleeved on the anti-twist plate.

3. The rotary anti-leakage and pollution cleaning machine according to claim 2, characterized in that, Positioning shaft holes are respectively arranged above the anti-twist grooves of the dirt-lifting tooth and the dirt-scraping tooth, and a positioning sleeve shaft is passed through the positioning shaft holes; a positioning sleeve is sleeved between adjacent rake teeth on the positioning sleeve shaft.

4. The rotary anti-leakage and pollution cleaning machine according to claim 3, characterized in that, The diameter of the positioning sleeve arranged between the dirt-scraping teeth of the rake tooth at the outermost edge of the rake tooth shaft is larger than that of the positioning sleeve between the dirt-scraping teeth in the middle of the rake tooth shaft.

5. The rotary anti-leakage and pollution cleaning machine according to claim 4, wherein, Detachable end plates are respectively arranged at both ends of the rake tooth shaft.

6. The rotary anti-leakage and pollution cleaning machine according to claim 1, wherein Buffer grid bars are arranged at both ends of the sub-grid, and a round steel is arranged on the side of the buffer grid bar close to the main grid, and the free end of the round steel protrudes from the end face of the side of the sub-grid bar close to the main grid.

7. The rotary anti-leakage and pollution cleaning machine according to claim 6, characterized in that, Buffer rubber is arranged at the position on the frame opposite to the round steel.

8. The rotary anti-leakage and pollution cleaning machine according to claim 7, characterized in that, One end of the buffer rubber is fixedly connected to the frame, and the other end hangs downward as a hanging section; an arc surface is arranged at the position on the frame opposite to the hanging section; the round steel is arranged opposite to the hanging section of the buffer rubber.

9. The rotary anti-leakage and pollution-cleaning machine according to any one of claims 1-8, characterized in that, Chain grooves are respectively arranged on both sides of the main grid, and two first drive chains are respectively installed in the left and right chain grooves, and both ends of the rake are respectively fixedly connected to the two first drive chains; A chute is arranged on the side of the chain groove, and rollers for rolling along the chute are arranged at both ends of the rake.

10. The rotary anti-leakage and pollution-cleaning machine according to any one of claims 1-8, characterized in that, A sliding bearing is arranged inside the hinge joint of the sub-grid and the bottom grid, and an anti-pollution cover is arranged outside.

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