CN210176495U - Grid dirt removing machine - Google Patents

Abstract

The utility model relates to the field of sewage treatment equipment, aim at providing a grid dirt separator, its technical scheme main points are including last frame, lower frame, drive arrangement, drive sprocket, driven sprocket, chain and otter board, and the otter board sets up on the chain, articulates and forms the confined otter board chain that can follow chain circulation removal between the adjacent otter board, still includes overspeed device tensioner, overspeed device tensioner includes tensioning motor, lead screw, nut piece, guide bar, tensioning rod and take-up pulley, the lead screw rotates to be connected in last frame, nut piece spiro union is on the lead screw, the guide bar sets up in last frame and runs through the nut piece, the tensioning rod sets up on the nut piece, the take-up pulley rotates with the tensioning rod to be connected, tensioning motor sets up in last frame and with the lead screw linkage; the grid sewage removing machine can adjust the screen plate chain, so that the screen plate chain is in a tensioning state, and the influence on sewage treatment effect caused by the fact that the screen plate chain is loosened is avoided.

Description

Grid dirt removing machine

Technical Field

The utility model relates to a sewage treatment device field, in particular to grid sewage removing machine.

Background

The inner inflow type screen plate grid sewage removing machine is widely applied to sewage treatment plants, water works, industrial sewage treatment plants, places in front of biological filters, paper mills, chemical plants, pump stations and the like, can achieve good sewage removing effect, and can intercept and remove impurities and floating objects in water, such as weeds, paper sheets, fibers, hairs and the like.

At present, Chinese patent with publication number CN201558598U discloses an inward flow type screen plate grid cleaner, which comprises two groups of chain wheels and two closed chains which are arranged side by side, wherein a closed screen plate chain which can move along with the chains in an up-and-down circulating way is formed between the two chains; the installation frame of the mesh plate chain is also provided with a front baffle and a rear baffle, and the front baffle, the rear baffle and the mesh plate chain enclose a filter cavity; the lower half part of the filter cavity is immersed in water flow, a water inlet communicated with the sewage side is formed in the front baffle, and the outer side of the whole screen plate chain is separated from one side of the water inlet through a partition plate and communicated with the clean water side; the top outside of otter board chain is provided with recoil cleaning device, is provided with filth collection device simultaneously in the inboard relative position in otter board chain top, and filth collection device has the drain that stretches out the filter chamber.

Although the internal inflow type screen plate grid sewage removal machine can filter sewage to achieve a sewage removal effect, the chain is easy to loosen along with the increase of the service time, so that the screen plate chain is difficult to be in a tensioning state, and the sewage treatment effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a grid scrubbing machine if the phenomenon of laxing appears in the chain, it can be adjusted the otter board chain, makes the otter board chain be in the tensioning state, avoids the otter board chain lax, influences the sewage treatment effect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a grid cleaner comprises an upper frame, a lower frame, a driving device, driving sprockets, driven sprockets, a chain and screen plates, wherein the upper frame is arranged on the lower frame, the upper frame is rotationally connected with two driving sprockets, the lower frame is rotationally connected with two driven sprockets, the chain is sleeved on the driving sprockets and the driven sprockets and tensioned by the driving sprockets and the driven sprockets, the driving device is arranged on the upper frame, the output end of the driving device is linked with the driving sprockets, the screen plates are arranged on the chain, adjacent screen plates are hinged to each other to form a closed screen plate chain capable of moving along with the chain in a circulating mode, the grid cleaner further comprises a tensioning device, the tensioning device comprises a tensioning motor, a lead screw, a nut block, a guide rod, a tensioning rod and a tensioning wheel, the lead screw is rotationally connected into the upper frame, the nut block is screwed onto the lead screw, the guide rod is arranged on the upper frame and penetrates through the nut block, the tensioning rod is arranged on the nut block, the tensioning wheel is rotationally connected with the tensioning rod, and the tensioning motor is arranged on the upper rack and is linked with the lead screw.

Through adopting above-mentioned technical scheme, if the chain appears not hard up, start the tensioning motor, the tensioning motor drives the lead screw and rotates, and the lead screw drives the nut seat and removes at the rotation in-process, and the nut seat drives the tensioning rod and rotates, and the tensioning rod drives the take-up pulley and removes at the removal in-process, makes the take-up pulley orientation be close to otter board chain direction and remove and support and touch the otter board chain, makes the otter board chain be in the tensioning state again, avoids the otter board chain to relax, influences the sewage treatment effect.

Further setting: the nut block is provided with a supporting rod, one end of the tensioning wheel is rotatably connected with the tensioning rod, and the other end of the tensioning wheel is rotatably connected with the supporting rod.

Through adopting above-mentioned technical scheme, two sections of take-up pulley rotate with bracing piece and tensioning rod respectively and are connected, only link to each other with the tensioning rod with the take-up pulley and compare, can improve the stability of take-up pulley, have reduced the possibility that the take-up pulley rocked.

Further setting: the tensioning motor is linked with the screw rod through a speed reducing component, the speed reducing component comprises a driving speed reducing gear and a driven speed reducing gear, the driving speed reducing gear is arranged on the tensioning motor, the driven speed reducing gear is arranged on the screw rod, the driving speed reducing gear is smaller than the driven speed reducing gear, and the driving speed reducing gear is meshed with the driven speed reducing gear.

Through adopting above-mentioned technical scheme, the slew velocity that can slow down the lead screw is set up to the setting of speed reduction component to the removal rate of take-up pulley slows down, avoids take-up pulley removal rate too fast, collides suddenly with the otter board chain, causes the damage of otter board chain.

Further setting: the tensioning motor is arranged on the upper rack through a moving mechanism, the moving mechanism comprises a moving rod and a moving plate, the moving rod is arranged on the upper rack, the moving plate is connected to the moving rod in a sliding mode, the tensioning motor is arranged on the moving plate, and a handle is arranged at one end, connected with the driven reduction gear, of the screw rod.

Through adopting above-mentioned technical scheme, if power failure or tensioning motor break down in the use, the pulling movable plate, the movable plate slides along the carriage release lever, and the tensioning motor moves along with the movable plate to change the relative position between initiative reducing gear and the driven reducing gear, make initiative reducing gear and driven reducing gear separation, rotate the handle, drive the lead screw through the handle and rotate, thereby realize continuing to drive lead screw pivoted purpose, avoid influencing the removal of take-up pulley.

Further setting: the upper rack is further provided with a balance rod, one end of the balance rod, which is far away from the upper rack, is connected with one end of the movable rod, which is far away from the upper rack, and a triangle is formed among the balance rod, the movable rod and the side wall of the upper rack.

Through adopting above-mentioned technical scheme, the setting of balancing pole has improved the stability of carriage release lever to improve the stability of movable plate, reduced the movable plate and appeared the possibility of rocking in the removal process.

Further setting: still include the mobile device, the mobile device includes driving motor, driving sprocket, driven driving sprocket, drive chain and drive block, driving sprocket rotates and connects in last frame, driven driving sprocket rotates to be connected in the balancing pole, and the drive chain cover is established on driving sprocket and driven sprocket and by driving sprocket and driven sprocket tensioning, driving motor sets up in last frame and rotates with driving sprocket, the drive block sets up on driving chain and is connected with the movable plate.

By adopting the technical scheme, the driving motor is started, the driving motor drives the driving chain wheel to rotate, the driving chain wheel drives the driven driving chain wheel to rotate, so that the driving chain wheel is driven to rotate continuously, the driving chain wheel drives the driving block to move in the rotating process of the driving chain wheel, and the driving block drives the movable plate to move in the moving process, so that the purpose of driving the movable plate to move is achieved, and compared with the manual pulling of the movable plate, the manual pulling device saves labor.

Further setting: the handle is detachably connected with the lead screw.

Through adopting above-mentioned technical scheme, set up to dismantling between handle and the lead screw and be connected, when need not using the handle, dismantle the handle from the lead screw, avoid the staff to be bruised by the handle when the scrubbing machine.

Further setting: the handle is provided with a connecting hole, the side wall of the connecting hole is provided with a connecting groove, the lead screw is provided with a connecting convex strip, and the connecting groove is in sliding fit with the connecting convex strip.

Through adopting above-mentioned technical scheme, when using, with the handle cover on the lead screw, and make and connect the sand grip and be in the connecting groove to accomplish the installation of handle, so that realize rotating the purpose of lead screw through the handle, when not using, pulling handle, connecting groove slides along connecting the sand grip, when connecting groove and connection sand grip separation, accomplishes the dismantlement of handle.

Further setting: and the upper frame is provided with an observation port and an observation door for shielding the observation port.

Through adopting above-mentioned technical scheme, when using take-up pulley tensioning otter board chain, open the observation door to observe the position of take-up pulley through the viewing aperture, come the convenience for tensioning otter board chain belt.

Further setting: the observation door is detachably connected with the upper frame.

Through adopting above-mentioned technical scheme, when observing the take-up pulley position, dismantle the observation door to expose the viewing aperture is whole, make the field of vision wider, bring the convenience for observing the take-up pulley position.

To sum up, the utility model discloses following beneficial effect has:

1. if the chain is loosened, a tensioning motor is started, the tensioning motor drives a lead screw to rotate, the lead screw drives a nut seat to move in the rotating process, the nut seat drives a tensioning rod to rotate, the tensioning rod drives the tensioning wheel to move in the moving process, the tensioning wheel moves towards the direction close to the mesh plate chain and abuts against the mesh plate chain, the mesh plate chain is in a tensioning state again, and the mesh plate chain is prevented from loosening to influence the sewage treatment effect;

2. the arrangement of the balance rod improves the stability of the movable rod, so that the stability of the movable plate is improved, and the possibility of shaking of the movable plate in the moving process is reduced;

3. set up to dismantling between handle and the lead screw and be connected, when need not use the handle, dismantle the handle from the lead screw, avoid the staff to be bruised by the handle when the scrubbing machine.

Drawings

Fig. 1 is a schematic structural diagram for embodying the present invention in the present embodiment;

FIG. 2 is a schematic structural diagram of a driving device in the present embodiment;

fig. 3 is a schematic structural diagram for showing a connection relationship between the upper rack and the observation door in the present embodiment;

FIG. 4 is an enlarged view of the portion A of FIG. 2 for embodying the flushing member;

FIG. 5 is a schematic structural view of the tensioner of the present embodiment;

FIG. 6 is an enlarged view of the portion B of FIG. 1 for embodying the mobile device;

FIG. 7 is a schematic structural diagram for showing the positional relationship between the handle and the lead screw in the present embodiment;

fig. 8 is an enlarged view of the structure of the part C in fig. 7 for showing the connection relationship between the handle and the lead screw.

In the figure, 1, an upper frame; 2. a lower frame; 3. a drive device; 4. a drive sprocket; 5. a driven sprocket; 6. a chain; 7. a screen plate; 8. an observation door; 9. a vertical dovetail bar; 10. a horizontal limiting plate; 11. a dovetail groove; 12. a water outlet; 13. an upper shaft; 14. a lower shaft; 15. a water inlet; 16. a first motor; 17. a first drive gear; 18. a second transmission gear; 19. a flushing member; 20. a sewage collecting tank; 21. a high pressure water spray pipe; 22. a spray head; 23. a blow-off pipe; 24. a tensioning device; 25. a tensioning motor; 26. a lead screw; 27. a nut block; 28. a guide bar; 29. a tension rod; 30. a tension wheel; 31. a cross beam; 32. a support bar; 33. a speed reduction mechanism; 34. an active reduction gear; 35. a driven reduction gear; 36. a moving mechanism; 37. a travel bar; 38. moving the plate; 39. a balancing pole; 40. a mobile device; 41. a drive motor; 42. a drive sprocket; 43. a driven drive sprocket; 44. a drive chain; 45. a drive block; 46. a first connecting frame; 47. a first connecting shaft; 48. a second link frame; 49. a second connecting shaft; 51. a handle; 52. connecting holes; 53. a connecting groove; 54. and connecting convex strips.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a grill cleaner, as shown in FIGS. 1 and 2, includes an upper frame 1, a lower frame 2, a driving device 3, a driving sprocket 4, a driven sprocket 5, a chain 6, and a screen 7.

As shown in fig. 1 and 3, the upper rack 1 is a rectangular box body, the upper rack 1 is provided with an observation port and an observation door 8, the observation door 8 is used for shielding the observation port, the observation door 8 is detachably connected with the upper rack 1, the upper rack 1 is provided with a vertical dovetail strip 9 and a horizontal limiting plate 10, one end of the vertical dovetail strip 9 close to the ground abuts against the horizontal limiting plate 10, the observation door 8 is provided with a dovetail groove 11, the dovetail groove 11 is in sliding fit with the vertical dovetail strip 9, and one side of the observation door 8 close to the ground abuts against the horizontal limiting plate 10.

When the observation door 8 needs to be detached, the observation door 8 is pulled, the dovetail groove 11 slides along the vertical dovetail strip 9, and when the dovetail groove 11 is separated from the dovetail strip, the observation door 8 is detached.

When the observation door 8 is installed, the notch of the dovetail groove 11 on the observation door 8 is aligned with the vertical dovetail strip 9, the observation door 8 is slid downwards, the dovetail groove 11 slides along the vertical dovetail strip 9, and when the observation door 8 abuts against the horizontal limiting plate 10, the observation door 8 is installed.

As shown in fig. 1, the upper frame 1 is disposed on the lower frame 2, the lower frame 2 is disposed in the water inlet channel to be treated, the lower frame 2 includes a front side plate, a rear side plate, a left side plate and a right side plate, the front side plate and the rear side plate are disposed oppositely, the left side plate and the right side plate are disposed oppositely, and the left side plate and the right side plate are both provided with water outlets 12.

As shown in fig. 2, two driving sprockets 4 are rotatably connected to the upper frame 1, an upper shaft 13 is rotatably connected to the upper frame 1, the driving sprockets 4 are arranged at two ends of the upper shaft 13, two driven sprockets 5 are rotatably connected to the lower frame 2, a lower shaft 14 is rotatably connected to the lower frame 2, the driving sprockets 4 are arranged at two ends of the lower shaft 14, the chain 6 is sleeved on the driving sprockets 4 and the driven sprockets 5 and tensioned by the driving sprockets 4 and the driven sprockets 5, the mesh plates 7 are arranged on the chain 6, the adjacent mesh plates 7 are hinged to each other to form a closed mesh plate chain capable of moving circularly along with the chain 6, a part of the mesh plate chain, which is located on the lower frame 2, forms a filter cavity with a front side plate and a rear side plate, and a.

As shown in fig. 1, the driving device 3 is disposed on the upper frame 1, an output end of the driving device 3 is linked with the driving sprocket 4, the driving device 3 includes a first motor 16, a first transmission gear 17 and a second transmission gear 18, the first motor 16 is disposed on the upper frame 1, the first transmission gear 17 is disposed on the first motor 16, one end of the upper shaft 13 penetrates through the upper frame 1 and is connected to the second transmission gear 18, and the first transmission gear 17 is meshed with the second transmission gear 18.

As shown in fig. 2 and 4, the upper frame 1 is provided with a washing member 19 and a dirt collecting groove 20, the washing member 19 includes a high pressure water spray pipe 21 and a nozzle 22, the high pressure water spray pipe 21 is arranged on the upper frame 1, one end of the high pressure water spray pipe 21 is arranged in the upper frame 1, the other end of the high pressure water spray pipe 21 is arranged outside the upper frame 1, one end of the high pressure water spray pipe 21 in the upper frame 1 is connected with the nozzle 22, the nozzle 22 is arranged above the driving sprocket 4, the dirt collecting groove 20 is arranged in the upper frame 1, the dirt collecting groove 20 is arranged below the driving sprocket 4, and one end of the dirt collecting groove 20 penetrates through the upper frame 1 and is connected with a dirt discharge pipe.

Sewage to be treated enters the filtering cavity through the water inlet 15, flows out through the screen plate chain and is discharged through the water outlet 12, impurities in the sewage are adhered to the screen plate chain, the first motor 16 drives the first transmission gear 17 to rotate under the working state, the first transmission gear 17 drives the second transmission gear 18 to rotate, the second transmission gear 18 drives the driving sprocket 4 to rotate through the upper shaft 13, the driving sprocket 4 drives the chain 6 to rotate, thereby driving the mesh plate chain to rotate, bringing impurities to a high position in the moving process of the mesh plate chain, spraying high-pressure water flow flowing in the high-pressure water spray pipe 21 on the mesh plate chain through the spray head 22, and the impurities on the screen plate chain are washed away, the washed impurities fall into the sewage collecting groove 20, the water flow sprayed by the spray head 22 falls into the sewage collecting groove 20, the impurities in the sewage collecting groove 20 are washed towards the sewage discharge pipe 23, and finally the impurities are discharged through the sewage discharge pipe 23.

As shown in fig. 1 and 5, the upper frame 1 is provided with a tensioning device 24, and the tensioning device 24 includes a tensioning motor 25, a lead screw 26, a nut block 27, a guide rod 28, a tensioning rod 29 and a tensioning wheel 30.

As shown in fig. 5, the screw rod 26 is rotatably connected in the upper frame 1, a cross beam 31 is arranged in the upper frame 1, one end of the screw rod 26 is rotatably connected with the cross beam 31, the other end of the screw rod is rotatably connected with the side wall of the upper frame 1, the nut block 27 is screwed on the screw rod 26, one end of the guide rod 28 is connected with the cross beam 31, the other end of the guide rod is connected with the side wall of the upper frame 1, the guide rod 28 penetrates through the nut block 27, the guide rods 28 are arranged in two numbers and are respectively positioned at two sides of the screw rod 26, the tension rod 29 is arranged on the nut block 27, a support rod 32 is further arranged on the nut block 27, one end of.

As shown in fig. 5, the tension motor 25 is disposed on the upper frame 1 and is linked with the lead screw 26 through the reduction mechanism 33, the reduction member includes a driving reduction gear 34 and a driven reduction gear 35, the driving reduction gear 34 is disposed on the tension motor 25, one end of the lead screw 26 connected with the side wall of the upper frame 1 penetrates through the side wall of the upper frame 1 and is connected with the driven reduction gear 35, the driving reduction gear 34 is smaller than the driven reduction gear 35, and the driving reduction gear 34 is meshed with the driven reduction gear 35.

Start tensioning motor 25, tensioning motor 25 drives initiative reducing gear 34 and rotates, initiative reducing gear 34 drives driven reducing gear 35 and rotates, driven reducing gear 35 drives lead screw 26 and rotates, lead screw 26 drives in the rotation process and drives nut block 27 and remove, nut block 27 drives bracing piece 32 and tensioning rod 29 and removes simultaneously, thereby drive take-up pulley 30 and remove, take-up pulley 30 supports and touches the otter board chain, make the otter board chain be in the tensioning state again, avoid the otter board chain to relax, influence the sewage treatment effect.

As shown in fig. 1 and 5, the tensioning motor 25 is connected to the upper frame 1 through a moving mechanism 36, the moving mechanism 36 includes three moving rods 37 and three moving plates 38, one end of each moving rod 37 is disposed on the upper frame 1, a moving hole is disposed on each moving plate 38, each moving plate 38 is slidably connected to the corresponding moving rod 37 through the corresponding moving hole, a balancing rod 39 is further disposed on the upper frame 1, one end of each balancing rod 39, which is away from the upper frame 1, is connected to one end of each moving rod 37, which is away from the upper frame 1, a triangle is formed among the balancing rod 39, the moving rods 37 and the side wall of the upper frame 1, so as to improve the stability of the moving plates 38 during moving, and the tensioning motor 25 is disposed on the moving plates 38.

When it is necessary to separate the driving reduction gear 34 from the driven reduction gear 35, the moving plate 38 is pulled, the moving plate 38 slides along the moving rod 37, and the tension motor 25 moves along with the moving plate 38, changing the relative position between the driving reduction gear 34 and the driven reduction gear 35, thereby separating the driving reduction gear 34 from the driven reduction gear 35.

As shown in fig. 6, the upper frame 1 is further provided with a moving device 40, the moving device 40 includes a driving motor 41, a driving sprocket 42, a driven driving sprocket 43, a driving chain 44 and a driving block 45, the driving sprocket 42 is rotatably connected to the upper frame 1, the upper frame 1 is provided with a first connecting frame 46, the first connecting frame 46 is rotatably connected with a first connecting shaft 47, the driving sprocket 42 is arranged on the first connecting shaft 47, the driven driving sprocket 43 is rotatably connected to the balance bar 39, the balance bar 39 is provided with a second connecting frame 48, the second connecting frame 48 is rotatably connected with a second connecting shaft 49, the driven driving sprocket 43 is arranged on the second connecting shaft 49, the driving chain 44 is sleeved on the driving sprocket 4 and the driven sprocket 5 and tensioned by the driving sprocket 4 and the driven sprocket 5, the driving motor 41 is arranged on the upper frame 1, the driving motor 41 is connected with the first connecting shaft 47, so as to drive the driving sprocket 42 to rotate, and the driving block 45 is arranged on the driving chain 44 and connected with one side of the moving plate 38 close to the ground.

The driving motor 41 is started, the driving motor 41 drives the first connecting shaft 47 to rotate, the first connecting shaft 47 drives the driving chain wheel 42 to rotate in the rotating process, the driving chain wheel 42 drives the driven driving chain wheel 43 to rotate through the driving chain 44 in the rotating process, the driving chain wheel 42 and the driven driving chain wheel 43 rotate together to drive the driving chain wheel 44 to rotate, and the driving block 45 drives the moving plate 38 to move, so that the purpose of driving the moving plate 38 to move is achieved.

As shown in fig. 7 and 8, one end of the screw rod 26 connected to the driven reduction gear 35 is detachably connected to a handle 51, the handle 51 is provided with a connecting hole 52, a connecting groove 53 is provided on a side wall of the connecting hole 52, the screw rod 26 is provided with a connecting convex strip 54, and the connecting groove 53 is in sliding fit with the connecting convex strip 54.

When the handle 51 needs to be detached from the lead screw 26, the handle 51 is pulled, the connecting groove 53 slides along the connecting convex strip 54, and when the connecting groove 53 is separated from the connecting convex strip 54, the purpose of detaching the handle 51 is achieved.

When the handle 51 needs to be mounted on the screw rod 26, the handle 51 is sleeved on the screw rod 26 through the connecting hole 52, so that the connecting convex strip 54 is positioned in the connecting groove 53, and the purpose of mounting the handle 51 on the screw rod 26 is achieved.

The implementation process comprises the following steps: pending sewage enters into the filter chamber through water inlet 15, sewage passes through the otter board chain and flows, rethread delivery port 12 discharges, start first motor 16, first motor 16 drive otter board chain rotates, the otter board chain takes impurity to the eminence, the intraductal high-pressure rivers that flow of pressure water spray wash away the impurity on the otter board chain, the impurity that washes away falls into album dirty inslot 20, by shower nozzle 22 spun rivers fall into album dirty inslot 20, wash away the impurity in album dirty inslot 20 towards blow off pipe 23 direction, final impurity is discharged through blow off pipe 23.

When the phenomenon of looseness appears in the otter board chain, will observe door 8 and dismantle, start tensioning motor 25, tensioning motor 25 drives nut piece 27 and removes, and nut piece 27 drives take-up pulley 30 through bracing piece 32 and tensioning rod 29, makes take-up pulley 30 support and touches the otter board chain, carries out the tensioning to the otter board chain.

If the tensioning motor 25 fails and cannot be used, the driving motor 41 is started, the driving motor 41 drives the moving plate 38 to move through the driving block 45, the driving plate drives the tensioning motor 25 to move, the driving reduction gear 34 is separated from the driven reduction gear 35, the handle 51 is installed on the handle 51, the handle 51 is rotated, and the handle 51 drives the screw rod 26 to rotate, so that the purpose of driving the screw rod 26 to rotate by replacing the motor is achieved, and the tensioning wheel 30 can move smoothly.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (10)

1. A grid cleaner comprises an upper frame (1), a lower frame (2), a driving device (3), a driving chain wheel (4), a driven chain wheel (5), a chain (6) and screen plates (7), wherein the upper frame (1) is arranged on the lower frame (2), the upper frame (1) is rotationally connected with the two driving chain wheels (4), the lower frame (2) is rotationally connected with the two driven chain wheels (5), the chain (6) is sleeved on the driving chain wheel (4) and the driven chain wheels (5) and tensioned by the driving chain wheel (4) and the driven chain wheels (5), the driving device (3) is arranged on the upper frame (1), the output end of the driving device (3) is linked with the driving chain wheels (4), the screen plates (7) are arranged on the chain (6), and adjacent screen plates (7) are hinged to form a closed screen plate chain capable of circularly moving along with the chain (6), the method is characterized in that: still include overspeed device tensioner (24), overspeed device tensioner (24) are including tensioning motor (25), lead screw (26), nut piece (27), guide bar (28), tensioning rod (29) and take-up pulley (30), lead screw (26) rotate to be connected in last frame (1), nut piece (27) spiro union is on lead screw (26), guide bar (28) set up on last frame (1) and run through nut piece (27), tensioning rod (29) set up on nut piece (27), take-up pulley (30) are connected with tensioning rod (29) rotation, tensioning motor (25) set up on last frame (1) and with lead screw (26) linkage.

2. A grill cleaner according to claim 1, wherein: the nut block (27) is provided with a support rod (32), one end of the tension wheel (30) is rotatably connected with the tension rod (29), and the other end of the tension wheel is rotatably connected with the support rod (32).

3. A grill cleaner according to claim 1, wherein: tensioning motor (25) and lead screw (26) are linked through the reducing gear component between, the reducing gear component includes initiative reducing gear (34) and driven reducing gear (35), initiative reducing gear (34) set up on tensioning motor (25), driven reducing gear (35) set up on lead screw (26), initiative reducing gear (34) are less than driven reducing gear (35), initiative reducing gear (34) and driven reducing gear (35) meshing.

4. A grill cleaner according to claim 3, wherein: tensioning motor (25) pass through moving mechanism (36) and set up on last frame (1), moving mechanism (36) include carriage release lever (37) and movable plate (38), carriage release lever (37) set up on last frame (1), movable plate (38) sliding connection is on carriage release lever (37), tensioning motor (25) set up on movable plate (38), the one end that driven reduction gear (35) is connected in lead screw (26) is equipped with handle (51).

5. A grill cleaner according to claim 4, wherein: the upper rack (1) is further provided with a balance rod (39), one end of the balance rod (39), which deviates from the upper rack (1), is connected with one end of the movable rod (37), which deviates from the upper rack (1), and a triangle is formed among the balance rod (39), the movable rod (37) and the side wall of the upper rack (1).

6. A grill cleaner according to claim 5, wherein: still include mobile device (40), mobile device (40) include driving motor (41), drive sprocket (42), driven drive sprocket (43), drive chain (44) and drive block (45), drive sprocket (42) rotate to be connected in last frame (1), driven drive sprocket (43) rotate to be connected in balancing pole (39), and drive chain (44) cover is established on driving sprocket (4) and driven sprocket (5) and is tensioned by driving sprocket (4) and driven sprocket (5), driving motor (41) set up on last frame (1) and rotate with driving sprocket (4), drive block (45) set up on drive chain (44) and are connected with movable plate (38).

7. A grill cleaner according to claim 4, wherein: the handle (51) is detachably connected with the screw rod (26).

8. A grill cleaner according to claim 7, wherein: the handle (51) is provided with a connecting hole (52), the side wall of the connecting hole (52) is provided with a connecting groove (53), the screw rod (26) is provided with a connecting convex strip (54), and the connecting groove (53) is in sliding fit with the connecting convex strip (54).

9. A grill cleaner according to claim 1, wherein: the upper frame (1) is provided with an observation port and an observation door (8) used for shielding the observation port.

10. A grill cleaner according to claim 9, wherein: the observation door (8) is detachably connected with the upper frame (1).

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