rotary cleaner tines, tines and rotary cleaners

Abstract

The present application provides a kind of rotary trash cleaner's rake tooth, rake and rotary trash cleaner, the outer side of circular ring-shaped rake body is provided with lifting dirt tooth and shovel dirt tooth, the included angle between the axis of shovel dirt tooth and lifting dirt tooth is 90-150 °;The bottom of shovel dirt tooth and lifting dirt tooth is provided with one anti-twist groove that is communicated with the inner cavity of circular ring-shaped rake body;The thickness of rake body and shovel dirt tooth and lifting dirt tooth is same.The whole of rake shaft is cylindrical, the outer side of rake shaft is provided with two anti-twist plates that are equivalent to the length of rake shaft;Rake body is set on rake shaft, and anti-twist groove is set on anti-twist plate.The rake tooth of the present application can be cut by laser as a whole, and it is fast and convenient to install;If a rake tooth is damaged, it can be replaced with a new one after being removed, and it is convenient to maintain.Rake body is set on rake shaft, and it is convenient to install;Rake shaft does not need to be punched, and it will not affect its stress;If a rake tooth is damaged, it can be replaced with a new one after being removed, and it is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy machinery, in particular to a rake tooth of a rotary trash cleaner, a rake of the rotary trash cleaner and the rotary trash cleaner. BACKGROUND

[0002] The rotary trash cleaner is an automatic sewage treatment equipment, mainly used for removing 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 municipal, industrial and other sewage treatment facilities, such as water intake pump stations, rainwater and sewage pump stations, urban flood control and drainage pump stations, water intake pump stations of sewage treatment plants, cooling water intake of power plants, etc. It has the characteristics of high automation, high separation efficiency of pollutants, small power consumption, small working noise, good corrosion resistance, etc. The rotary trash cleaner mainly consists of a rack, a main grid, a trash rake, a lifting chain, a motor reduction drive device, etc. When working, the trash rake plate is driven by the driving device to lift the pollutants intercepted by the underwater grid part (bottom grid), and then the trash rake plate is synchronously rotated clockwise from the back of the main grid to the front of the main grid by the lifting chain on both sides. The rake plate is turned over when it reaches the highest point of the main grid, and the pollutants can be discharged by gravity or other means to achieve the purpose of decontamination.

[0003] The rake directly contacts with the pollutants and is driven by the driving mechanism, and it keeps moving, which is an easily damaged part of the trash cleaner. The existing rake mainly has two forms, one is to directly weld the rake tooth on the rake shaft, and the other is to open a slot on the rake shaft and insert the rake tooth into the rake shaft. The first way is more difficult to manufacture, the machining precision is more difficult to guarantee, and it is easy to damage. Moreover, when the rake tooth is damaged, the rake needs to be disassembled and transported to a special welding workshop for repair; the second way will affect the stress of the rake shaft, resulting in reduced service life of the rake shaft, and it is also more troublesome to repair when the rake tooth is damaged. SUMMARY

[0004] The present application provides a rake tooth of a rotary trash cleaner, a rake of the rotary trash cleaner and the rotary trash cleaner to solve at least one of the above problems.

[0005] According to one aspect of the present application, a tooth of a rotary cleaner is provided, comprising a circular tooth body, a lifting tooth and a scraping tooth are arranged on the outer side of the circular tooth body, the angle between the axes of the lifting tooth and the scraping tooth is 90-150°, a twist-preventing groove is arranged on the bottom of each of the lifting tooth and the scraping tooth and is in communication with the inner cavity of the circular tooth body, and the thickness of the tooth body is the same as that of the lifting tooth and the scraping tooth. The conventional tooth is welded on the tooth shaft, which is difficult to manufacture and easy to damage. The damaged tooth is difficult to repair. The tooth of the present application is cut by laser in whole, which is fast in processing and convenient in installation. If a tooth is damaged, only the damaged tooth needs to be replaced, which is convenient in repair.

[0006] According to another aspect of the present application, a rotary cleaner is provided, comprising a plurality of the above-mentioned teeth, a tooth shaft and a twist-preventing plate, the tooth shaft is in the shape of a cylinder as a whole, two twist-preventing plates are arranged on the outer side of the tooth shaft and have the same length as the tooth shaft, the tooth body is sleeved on the tooth shaft, and the twist-preventing groove is sleeved on the twist-preventing plate. The tooth of the present application is sleeved on the tooth shaft, which is convenient in installation. The tooth shaft does not need to be punched, which does not affect the stress. If a tooth is damaged, only the damaged tooth needs to be replaced, which is convenient in repair.

[0007] In some embodiments, a positioning shaft hole is arranged above the twist-preventing groove of the lifting tooth and the scraping tooth, respectively, and a positioning sleeve shaft is arranged in the positioning shaft hole. A positioning sleeve is sleeved between adjacent teeth on the positioning sleeve shaft. The positioning sleeve can fix the position of the tooth, which is convenient in positioning during installation.

[0008] In some embodiments, the diameter of the positioning sleeve arranged between the scraping teeth of the tooth at the edge of the tooth shaft is greater than that of the positioning sleeve arranged between the scraping teeth of the tooth in the middle of the tooth shaft. When the tooth shaft is in contact with the secondary fence, the positioning sleeve arranged between the scraping teeth of the tooth at the edge of the tooth shaft is in contact with the secondary fence, while the positioning sleeve arranged between the scraping teeth of the tooth in the middle of the tooth shaft is not in contact with the secondary fence. The positioning sleeve at the edge of the tooth shaft is convenient to replace after being worn, and this arrangement can avoid the positioning sleeve in the middle of the tooth shaft from being worn.

[0009] In some embodiments, the two ends of the tooth shaft are respectively provided with detachable end plates. The tooth shaft end plate is detachably connected, which is convenient for repair and replacement when the tooth is damaged.

[0010] According to another aspect of the present application, there is also provided a rotary cleaner, comprising the tooth rake of the rotary cleaner described above, and a frame, a main grid, a bottom grid, a secondary grid and a driving mechanism; the main grid is arranged at the middle of the frame; the bottom grid is arranged at the lower front side of the frame; the lower end of the secondary grid is hinged to the bottom grid, and the upper end of the secondary grid is in abutment with the main grid; the driving mechanism drives the tooth rake to make a rotary movement around the main grid, and is arranged such that when the tooth rake abuts against the upper end of the secondary grid during the upward movement of the tooth rake, the tooth rake pushes the upper end of the secondary grid away from the main grid; when the tooth rake is away from the secondary grid, the upper end of the secondary grid is restored to abut against the main grid. The present application sets the secondary grid between the bottom grid and the main grid to shield the gap between the bottom grid and the main grid, preventing the leakage of the dirt from the gap; the secondary grid is hinged to the bottom grid, and the upper end of the secondary grid is in abutment with the main grid, forming a closed dirt blocking body, effectively solving the problem of the leakage of the dirt from the gap between the bottom grid and the main grid. In order to make the tooth rake make a rotary movement around the main grid and take away the dirt left on the main grid and the secondary grid, the secondary grid is arranged to be movable along the top end of the bottom grid, and the tooth rake can push the secondary grid away from the main grid when the tooth rake removes the dirt on the secondary grid and the main grid, and the top end of the secondary grid is restored to abut against the main grid when the tooth rake takes away the dirt, shielding the gap between the bottom grid and the main grid.

[0011] In some embodiments, the secondary grid of the present application is provided with buffer grid bars at both ends, and the side of the buffer grid bar close to the main grid is provided with a round steel, and the free end of the round steel protrudes from the end face of the side of the secondary grid close to the main grid. Due to the effect of the water flow and the eccentric distance, the top end of the secondary grid will abut against the main grid again after the tooth rake leaves, and the setting of the buffer body can avoid the direct impact of the secondary grid on the main grid bar when the secondary grid is reset, causing wear of the main grid bar, and can prolong the service life of the main grid bar.

[0012] In some embodiments, the frame of the present application is provided with a buffer rubber at the position opposite to the round steel. The setting of the buffer rubber at the position opposite to the buffer body can weaken the impact force of the secondary grid 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 application is fixedly connected to the frame, and the other end is suspended downward as a suspended segment; the position of the frame opposite to the suspended segment is provided with a circular arc surface; and the round steel is arranged opposite to the suspended segment of the buffer rubber. This setting can further weaken the impact force of the secondary grid on the frame and the main grid bar when the secondary grid is reset, and the impact force of the secondary grid is weakened when the buffer body abuts against the suspended segment of the buffer rubber, and the impact force of the secondary grid is further weakened when the suspended segment of the buffer rubber abuts against the circular arc surface provided on the frame.

[0014] In some embodiments, the main grid of the present application is provided with a chain groove on each side, and two first transmission chains are respectively installed in the left and right chain grooves, and the two ends of the tooth rake are fixedly connected to the two first transmission chains; a sliding groove is arranged on the side of the chain groove, and the two ends of the tooth rake are provided with rollers rolling along the sliding groove; the driving mechanism drives the first transmission chain to drive the tooth rake to rotate up and down along the sliding groove. The pulley is arranged at the two ends of the tooth rake, and the sliding groove is correspondingly arranged on the rack, which can prevent the rake tooth from tilting and causing the operation of the cleaner to be blocked. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic view of the structure of the tooth rake of the prior art rotary cleaner;

[0016] Figure 2 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application;

[0017] Figure 3 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application; Figure 2 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application;

[0018] Figure 4 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application; Figure 3 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application;

[0019] Figure 5 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application; Figure 2 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application;

[0020] Figure 6 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application; Figure 3 A schematic view of the structure of the tooth rake of the rotary cleaner of an embodiment of the present application;

[0021] Figure 7 A schematic view of the structure of the rotary cleaner of an embodiment of the present application;

[0022] Figure 8 A schematic view of the structure of the rotary cleaner of an embodiment of the present application; Figure 7 A schematic view of the structure of the rotary cleaner of an embodiment of the present application;

[0023] Figure 9 A schematic view of the structure of the rotary cleaner of an embodiment of the present application;

[0024] Figure 10 A schematic view of the structure of the rotary cleaner of an embodiment of the present application;

[0025] Figure 11 A schematic view of the structure of the rotary cleaner of an embodiment of the present application; Figure 10 A schematic view of the structure of the rotary cleaner of an embodiment of the present application;

[0026] Figure 12 A schematic view of the structure of the rotary cleaner of an embodiment of the present application; Figure 10The schematic diagram of the buffer device of the rotary anti-pollution cleaning machine is shown.

[0027] Figure 13 For Figure 10 The schematic diagram of the buffer device of the rotary anti-pollution cleaning machine is shown. DETAILED DESCRIPTION

[0028] For the purpose, technical solutions and advantages of the embodiments of the present application to be clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0030] Finally, it should be noted that in this document, relationship terms such as first and second, counterclockwise and clockwise, positive and negative, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain", not only include those elements, but also include other elements not explicitly listed, or include elements inherent to the process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other same elements in the process, method, article or device including the described elements.

[0031] The present application will be further described in detail below with reference to the drawings.

[0032] Figures 2-6 The structure of the tooth rake of the rotary anti-pollution cleaning machine in an embodiment of the present application is schematically shown.

[0033] Reference Figures 2-6 As shown, the tooth rake 30 includes a plurality of rake teeth 31, a tooth rake shaft 35, an end plate 32, a roller 33, an anti-twist plate 36, a positioning sleeve shaft 37, a first positioning sleeve 381 and a second positioning sleeve 382. Among them, the rake teeth 31, the end plate 32, the roller 33, the positioning sleeve shaft 37, the first positioning sleeve 381 and the second positioning sleeve 382, the rake teeth 31, the end plate 32, the roller 33, the roller 33, the positioning sleeve shaft 37, the first positioning sleeve 381 and the second positioning sleeve 382 are connected with the rake tooth shaft 35 in a detachable manner.

[0034] Reference Figure 5 As shown in the figure, the tine 31 has a circular tine body 316, and the outer side of the tine body 316 is provided with a lifting tine 312 and a scraping tine 311. The included angle between the axes of the scraping tine 311 and the lifting tine 312 can be 90-150°. In this embodiment, the included angle between the axes of the scraping tine 311 and the lifting tine 312 is 120°. When the tine rake 30 moves upward, the included angle between the scraping tine 311 and the lifting tine 312 is upward. The setting of the included angle between the axes of the scraping tine 311 and the lifting tine 312 to 120° can make the tine rake 30 scrape as much dirt as possible each time, and reduce the falling of dirt during the lifting of the dirt.

[0035] The bottom of the scraping tine 311 and the lifting tine 312 is respectively provided with an anti-twist groove 314 communicating with the inner cavity 315 of the body, and the upper part of the anti-twist groove 314 is respectively provided with a positioning shaft hole 313. The thickness of the tine body 316 is consistent with the thickness of the scraping tine 311 and the lifting tine 312. The tine 31 can be integrally laser cut, which is fast, accurate, and good in stress. The tine 31 is sleeved on the tine rake shaft 35. Since the tine rake shaft 35 is not provided with an opening, the stress of the tine rake shaft 35 is not affected.

[0036] The tine rake shaft 35 is in the shape of a cylinder as a whole. The diameter of the tine rake shaft 35 is adapted to the inner diameter of the tine body 316 of the tine 31. The outer side of the tine rake shaft 35 is provided with two anti-twist plates 36 with a length corresponding to the length of the tine rake shaft 35. The positions and shapes of the two anti-twist plates 36 are respectively adapted to the positions and shapes of the anti-twist grooves 314 of the scraping tine 311 and the lifting tine 312. The setting of the anti-twist plates 36 can enhance the rigidity of the tine 31.

[0037] The two ends of the tine rake shaft 35 are respectively provided with a detachable end plate 32. The end plate 32 is connected to the end face of the tine rake shaft 35 through a double-headed bolt 341. The detachable connection between the end plate 32 and the tine rake shaft 35 can facilitate the replacement of the damaged tine 31.

[0038] The outer diameter of the positioning sleeve shaft 37 is adapted to the inner diameter of the positioning shaft hole 313 of the tine 31, and also to the inner diameters of the first positioning sleeve 381 and the second positioning sleeve 382.

[0039] The tooth body 316 is sleeved on the tooth harrow shaft 35, the anti-twist groove 314 is sleeved on the anti-twist plate 36, and the positioning sleeve shaft 37 passes through the positioning shaft hole 313 of the harrow tooth 31. Between adjacent harrow teeth 31, a positioning sleeve is sleeved on the positioning sleeve shaft 37. Both ends of the positioning sleeve shaft 37 are provided with external threads, and the harrow tooth 31 and the positioning sleeve are clamped by tightening the double nuts 342 from both ends. The diameter of the first positioning sleeve 381 arranged between the silt scooping teeth 311 of the three harrow teeth 31 located at the edge of the tooth harrow shaft 35 is greater than that of the second positioning sleeve 382 located in the middle of the tooth harrow shaft 35, which can reduce the wear of the second positioning sleeve 382. Replacing the first sleeve 381 is more convenient than replacing the second sleeve 382 due to wear.

[0040] Chain groove sides are provided with sliding grooves, and two rollers 33 arranged at both ends of the tooth harrow 30 roll along the sliding grooves on both sides, which can prevent the tooth harrow 30 from tilting and causing the machine to be blocked. Figure 6 As shown, the end surface of the roller shaft 331 of the roller 33 is provided with an axis stopping surface 332 perpendicular to the end surface, and the axis stopping surface 332 abuts against the end plate 32.

[0041] The spacing of the harrow teeth 31 is consistent with the spacing of the secondary bars and the spacing of the primary bars, the silt scooping teeth 311 of the harrow teeth 31 can be inserted between the secondary bars, and the silt lifting teeth 312 of the harrow teeth 31 can be inserted between the primary bars.

[0042] Figure 7 And Figure 8 The structure of a rotary anti-pollution cleaning machine according to an embodiment of the present application is schematically shown.

[0043] Reference Figure 7 And Figure 8 As shown, the rotary anti-pollution cleaning machine includes a frame 10, a tooth harrow 30, a primary bar 41, a bottom bar 42, a secondary bar 43, and a driving mechanism 20.

[0044] The frame 10 is in the shape of a long rectangle, and the top is inclined backward in a circular arc shape. The width of the frame 10 can be set according to the actual needs of water conservancy projects.

[0045] The primary bar 41 is arranged in the middle of the frame 10, the primary bar 41 is arranged vertically with parallel and evenly spaced primary bar strips, and the lower end of the primary bar 41 is usually arranged underwater. An arc-shaped back plate 11 is arranged above the primary bar 41.

[0046] The bottom grate 42 is arranged at the lower front side of the frame 10, and is usually arranged underwater. The upper end of the bottom grate 42 is provided with a first hinge plate 425. The gap between the bottom grate 42 and the main grate 41 is sufficient for the rake 30 to pass through smoothly. The height of the auxiliary grate 43 is greater than the gap between the bottom grate 42 and the main grate 41, and the upper end of the auxiliary grate 43 is always clear to the main grate 41 in the process of the rake 30 colliding with the auxiliary grate 43 until leaving the auxiliary grate 43.

[0047] The auxiliary grate 43 is arranged obliquely, with the lower end hinged to the upper end of the bottom grate 41 and the upper end abutting against the main grate 41. Both the auxiliary grate 43 and the bottom grate 41 are used to trap the dirt in the water.

[0048] The main grate 41, the auxiliary grate 43 and the bottom grate 42 constitute a closed dirt blocking body.

[0049] The driving mechanism 20 drives the rake 30 to make a rotary motion around the main grate 41. On the side of the main grate 41 facing the auxiliary grate, the rake 30 moves from bottom to top; on the other side of the main grate 41, the rake 30 moves from top to bottom. In the process of the rake 30 turning downward, the dirt carried by the rake 30 from the bottom grate 42, the auxiliary grate 43 and the main grate 41 can be dumped on the dirt discharging device arranged additionally and carried away.

[0050] In the process of the rake 30 moving from bottom to top, the rake 30 will pass through the gap between the main grate 41 and the bottom grate 42. When the rake 30 abuts against the upper end of the auxiliary grate 43, the rake 30 will push the upper end of the auxiliary grate 43 away from the main grate 41. After the rake 30 continues to move upward and leaves the auxiliary grate 43, the upper end of the auxiliary grate 43 will abut against the main grate 41 again due to the water flow and the eccentric distance.

[0051] In the 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 use hydraulic or pneumatic transmission to drive the rake 30 to make a rotary motion up and down around the main grate 41.

[0052] The first transmission wheel 23 is fixedly connected with the rotor of the motor 27, and the motor 27 drives the first transmission wheel to rotate.

[0053] A chain groove is arranged on each of the left and right sides of the frame 10, and the chain groove surrounds the side surface of the main grate 41. Two first transmission chains 21 are respectively arranged in the left and right chain grooves. The two ends of the rake 30 are fixedly connected with the two first transmission chains 21, and the tines of the rake 30 can extend into the gap of the main grate bars. A plurality of rakes 30 are arranged on the first transmission chain 21 at intervals, and the rakes 30 continuously carry away the dirt left on the auxiliary grate 43 and the main grate 41 under the driving of the driving mechanism 20.

[0054] The transmission rod 26 is arranged on the top of the frame 10, crossing the upper part of the main grid 41. Two third transmission wheels 25 are fixedly connected to the two ends of the transmission rod 26 respectively, and two first transmission chains 21 are sleeved on the third transmission wheels 25 respectively. The outer end of the third transmission wheel 25 on the right side of the transmission rod 26 is fixedly provided with a second transmission wheel 24. The first transmission wheel 23 and the second transmission wheel 24 are connected through the second transmission chain 22 sleeved thereon.

[0055] A deflection wheel is arranged at the lower part of each of the two chain grooves, and the first transmission chain 21 is sleeved on the deflection wheel.

[0056] The motor 27 is started to drive the first transmission wheel 23 to rotate, the first transmission wheel 23 drives the second transmission wheel 24 to rotate through the second transmission chain 22, the second transmission wheel 24 drives the two third transmission wheels 25 to rotate through the transmission rod 26, the two third transmission wheels 25 drive the two first transmission chains 21 installed in the two chain grooves to rotate respectively, and the two first transmission chains 21 drive the tooth rake 30 to rotate around the main grid 41.

[0057] Figure 9 The structure of the sub-grid of the rotary anti-pollution cleaning machine is shown schematically.

[0058] Reference Figure 9 As shown, the sub-grid 43 comprises a plurality of sub-grid bars 431 which are parallel to each other, uniformly spaced, and vertically arranged. The lower end of the sub-grid bar 431 is welded to the support plate 434, the cross section of the support plate 434 is L-shaped, and the lower end and the lower part of one side of the sub-grid bar 431 are welded to the support plate 434. The two ends of the sub-grid 43 are each provided with a buffer grid bar 432, and a round steel 433 for triggering the buffer is arranged on the side of the buffer grid bar 432 close to the main grid. The free end of the round steel 433 protrudes from the end face of the sub-grid bar 431. The sub-grid bar 431 is arranged on the support rod 436. The lower end of the support plate 434 is provided with two second hinge plates 435 which are adapted to the positions of the first hinge plates 425 on the bottom grid 42, and are used for hinging with the bottom grid 42. The first hinge plate 425 and the second hinge plate 435 are sleeved with a dirt-proof cover, and a sliding bearing is arranged inside, which can prevent dirt from entering the hinge part and affecting the rotation of the sub-grid 43. The rotation range between the first hinge plate 425 and the second hinge plate 435 can be set to make the rotation range of the sub-grid 43 between the top end abutting against the main grid 41 and the vertical state of the main grid 41 and the sub-grid 43, so that the top end of the sub-grid 43 can always abut against the main grid 41 due to the impact of the water flow when the sub-grid 43 does not contact the tooth rake 30.

[0059] Figure 10 The partial structure of the rotary cleaning machine is shown schematically.

[0060] Reference Figure 10As shown, the lower end of the chain groove of the cleaning machine is provided with a semi-circular chain steering cover 12, and a cushioning rubber 50 is provided on the front end face of the steering cover 12. (Reference) Figure 10 and Figure 13 As shown, one end of the buffer rubber 50 is fixedly connected to the steering cover 12, and the other end is suspended downwards, forming a suspended section 51.

[0061] When the cleaning machine is not started, the upper end of the auxiliary grid 43 rests against the main grid 41, and the round steel 433 on the buffer grid bar 432 rests against the suspended section 51 of the buffer rubber 50.

[0062] Figure 11 schematically shown Figure 10 The image shows the state of the rotary screen cleaner when the rake contacts the auxiliary screen.

[0063] refer to Figure 11 As shown, the rake 30 moves from bottom to top along the chain groove under the drive of the first transmission chain 21. When the rake 30 contacts the secondary grid 43, due to the pushing 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 of 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 flip over, and the included angle between the shoveling teeth 311 and the lifting teeth 312 will be downward, and the attached dirt can be dumped onto the dirt conveying equipment set at the rear of the frame and carried away.

[0064] Figure 12 schematically shown Figure 10 The image shows the state of the rotary screen cleaner after the rake has left the auxiliary screen.

[0065] refer to Figure 12 As shown, after the rake 30 leaves the top of the secondary grid 43, due to gravity and water flow, the secondary grid 43 rotates around the hinge axis, and the top of the secondary grid 43 moves closer to the main grid 41. Because the free end of the round steel 433 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 abuts against the suspended section 51 of the buffer rubber 50, pushing the suspended section 51 of the buffer rubber 50 towards the arc surface of the steering cover 12, further enhancing the buffering effect. This arrangement prevents the top of the secondary grid bar 431 from making hard contact with the main grid bar, reducing wear on both the main grid bar and the secondary grid bar 431, and protecting both the main grid 41 and the secondary grid 43. In other embodiments, the arc surface can also be provided on other components of the frame 10, as long as its position is opposite to the suspended section 51 of the buffer rubber 50.

[0066] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make 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. The toothed rake of a rotary cleaning machine, characterized in that, Includes rake teeth, rake shaft, and anti-torsion plate; The outer surface of the annular rake tooth body is provided with lifting teeth and shovel teeth, and the included angle between the axes of the shovel teeth and the lifting teeth is 90-150°. The bottom of both the shovel tooth and the lifting tooth is provided with an anti-torsion groove that communicates with the inner cavity of the annular rake tooth body. The thickness of the rake tooth body is the same as that of the shovel tooth and the lifting tooth. The shovel teeth, lifting teeth and rake teeth body are integrally formed, and the connection between the outer side surfaces of the shovel teeth and lifting teeth and the outer side surface of the rake teeth body body is a rounded transition. The toothed rake shaft is cylindrical in shape, and two anti-torsion plates with a length equivalent to that of the toothed rake shaft are provided on the outer side of the toothed rake shaft. The rake teeth are fitted onto the rake shaft, and the anti-torsion groove is fitted onto the anti-torsion plate; positioning shaft holes are respectively provided above the anti-torsion grooves of the lifting teeth and shoveling teeth, and positioning sleeve shafts are inserted into the positioning shaft holes; positioning sleeves are fitted onto the positioning sleeve shafts and between adjacent rake teeth.

2. The toothed rake according to claim 1, characterized in that, The diameter of the positioning sleeve between the scraping teeth of the rake teeth located at the outermost edge of the rake shaft is larger than that of the positioning sleeve between the scraping teeth located in the middle of the rake shaft.

3. The toothed rake according to claim 1 or 2, characterized in that, The toothed rake shaft is provided with detachable end plates at both ends.

4. A rotary cleaning machine, characterized in that, It includes the toothed rake as described in any one of claims 1-3, as well as a frame, main grid, bottom grid, auxiliary grid, and drive mechanism; The main grid is located in the middle of the frame; The bottom grid is located on the lower front side of the frame; The lower end of the sub-gate is hinged to the bottom gate, and the upper end abuts against the main gate; The driving mechanism drives the toothed rake to rotate around the main grid. It is configured such that when the toothed rake abuts the upper end of the secondary grid during its upward movement, the toothed rake pushes the upper end of the secondary grid away from the main grid; when the toothed rake leaves the secondary grid, the upper end of the secondary grid returns to abutting the main grid.

5. The rotary cleaning machine according to claim 4, characterized in that, Both ends of the sub-grid are provided with buffer grid bars. The side of the buffer grid bar closest to the main grid is provided with round steel, and the free end of the round steel protrudes from the end face of the sub-grid bar closest to the main grid.

6. The rotary cleaning machine according to claim 5, characterized in that, The frame is provided with cushioning rubber at the position opposite to the round steel.

7. The rotary cleaning machine according to claim 6, characterized in that, One end of the buffer rubber is fixedly connected to the frame, and the other end is suspended downwards as a suspended section; the position on the frame opposite to the suspended section is set as an arc surface; the round steel is set opposite to the suspended section of the buffer rubber.

8. The rotary screen cleaner according to any one of claims 4-7, characterized in that, The main grid has chain grooves on both sides, and two first transmission chains are installed in the left and right chain grooves respectively. The two ends of the toothed rake are fixedly connected to the two first transmission chains respectively. 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 toothed rake; The drive mechanism drives the first transmission chain to make the rake rotate up and down along the slide.

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