CN112222537B

CN112222537B - Preparation method of key component for impeller of hydraulic generator

Info

Publication number: CN112222537B
Application number: CN202011162648.0A
Authority: CN
Inventors: 姚国良; 张建华; 莫华君; 蔡岳阳
Original assignee: Zhejiang Shenjiu Metal Products Co ltd
Current assignee: Zhejiang Shenjiu Metal Products Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2023-05-23
Anticipated expiration: 2040-10-27
Also published as: CN112222537A

Abstract

The invention discloses a preparation method of key components for a hydraulic generator impeller, which comprises a bottom plate and a fixed disc, wherein an annular rack is fixedly arranged outside a tray, one side of the annular rack is meshed with a driving gear, the top of a movable disc is fixedly provided with a positioning device, the bottom of the movable disc is sleeved with a screw rod, the top of the fixed disc is fixedly provided with a second cylinder, the outside of the fixed disc is fixedly provided with four sliding rods, the bottom of a sliding block is hinged with a first connecting rod, the inner side of the first connecting rod is hinged with a second connecting rod, the bottom of the first connecting rod is hinged with a second connecting disc, the driving end of a driving motor is fixedly provided with a processing cutter head, and one side of a mounting frame close to the tray is fixedly provided with a cleaning device. Through setting up guide rail, lead screw, annular rack, drive gear, second cylinder, driving motor and processing tool bit, make the processing tool bit carry out the random adjustment to the position that the impeller needs to be processed, avoid the error when manual operation, improved the accuracy of impeller processing size.

Description

Preparation method of key component for impeller of hydraulic generator

Technical Field

The invention belongs to the technical field of production of hydraulic generator impellers, and particularly relates to a preparation method of a key component for a hydraulic generator impeller.

Background

The hydro-generator is a generator which uses a water turbine as a prime motor to convert water energy into electric energy. When the water flow passes through the water turbine, the water energy is converted into mechanical energy, the rotating shaft of the water turbine drives the rotor of the generator, and the mechanical energy is converted into electric energy to be output. Is the main power equipment for generating electric energy in hydropower stations.

In the modern society of rapid development of mechanical technology, impellers are very widely applied, so that impeller production and processing equipment has a very important role as an essential machine in the impeller production process. However, the traditional impeller production and processing equipment is heavy in weight, workers are required to personally operate a machine to process, the processing accuracy error is large, the product is required to be repeatedly reworked, and the production efficiency is low and the processing cost is increased.

Disclosure of Invention

The invention aims to provide a preparation method of key components for a hydraulic generator impeller, which aims to solve the problems that in the prior art, the conventional impeller production and processing equipment is heavy in weight and needs workers to personally operate a machine for processing in the use process, so that the processing accuracy error is large, the production efficiency is low and the processing cost is high.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a hydraulic generator is key component preparation facilities for impeller, includes bottom plate and fixed disk, the equal fixed mounting in both ends at bottom plate top has the guide rail, the movable disk has been cup jointed to the inside of guide rail, the tray has been cup jointed at the top of movable disk, the outside fixed mounting of tray has annular rack, one side meshing of annular rack has drive gear, the top fixed mounting of movable disk has positioner, the bottom of movable disk has cup jointed the lead screw, the top fixed mounting of bottom plate has the mounting bracket, the top fixed mounting of fixed disk has the second cylinder, the outside fixed mounting of fixed disk has four slide bars, four the outside of slide bar has cup jointed the sliding block, the bottom of sliding block articulates there is the head rod, the inboard of head rod articulates there is the second connecting disk, one side that the head rod was kept away from to the top of second connecting disk articulates there is the head rod, the bottom of head rod articulates there is the second connecting disk, the top fixed mounting of second connecting disk has driving motor, the driving motor's driving end has the processing tool bit, one side fixed mounting bracket that is close to the tray has cleaning device.

Preferably, the guide rail is internally provided with a cross-shaped groove, and both ends of the bottom of the movable disc are fixedly provided with cross bars matched with the specification and the size of the cross-shaped groove.

Preferably, the tray is circular, and a center limiting rod is fixedly arranged at the top of the tray.

Preferably, the positioning device comprises a first air cylinder, the top of the first air cylinder is fixedly provided with a lifting plate, one end, far away from the first air cylinder, of the bottom of the lifting plate is fixedly provided with a telescopic rod, the outer part of the telescopic rod is sleeved with a tension spring, and the bottom of the telescopic rod is fixedly provided with a positioning plate.

Preferably, the driving gear is fixedly arranged at the top of the movable disc, the first motor is fixedly arranged at the top of the driving gear, and the second motor is fixedly arranged at one side of the screw rod.

Preferably, four slide bars are uniformly and symmetrically distributed outside the fixed disk, four slide bars are fixedly connected with the mounting frame, and the bottom of the second cylinder is fixedly connected with the first connecting disk.

Preferably, the cleaning device comprises a connecting frame, a third air cylinder is fixedly arranged at the top of the connecting frame, a cleaning roller is fixedly arranged at the bottom of the connecting frame, a driven gear is fixedly arranged at one end of the outer part of the cleaning roller, a driving gear is meshed with the top of the driven gear, and a cleaning motor is fixedly arranged at one side of the driving gear.

Preferably, the outside of third cylinder has cup jointed the mount, mount and mounting bracket fixed connection, driving gear fixed mounting is in the inboard of link, the outside of cleaning roller is provided with the clearance brush.

The preparation method of the key component preparation device for the hydraulic generator impeller comprises the following steps:

s1, manually placing an impeller to be processed on the top of a tray, and sleeving the center of the impeller outside a center limiting rod.

S2, after the position of the impeller is approximately placed, the position of the impeller is required to be positioned by utilizing a positioning device, a first cylinder in the positioning device is started respectively, and the first cylinder drives the lifting plate to move downwards, so that the positioning plate is propped against the top end of the impeller downwards, and the extension spring and the telescopic rod are compressed at the moment.

S3, starting a second motor, wherein the second motor drives the screw rod to rotate, so that the movable disc moves, the impeller moves towards the direction of the machining tool bit, then starting a second cylinder, the distance between the impeller and the machining tool bit is shortened, the second cylinder drives the first connecting disc to move upwards, the second connecting rod draws the first connecting rod together, the sliding block slides outside the sliding rod, the machining tool bit moves downwards at the moment, and meanwhile, the driving motor is started, and drives the machining tool bit to rotate, so that the machining tool bit machines the impeller.

S4, when the position to be processed is required to be adjusted, a first motor and a second motor are started respectively, the first motor drives a driving gear to rotate, and due to the meshing effect between the annular rack and the driving gear, the tray rotates, so that the impeller rotates, the locating plate is required to be far away from the top of the impeller before the impeller rotates, after the position rotation of the impeller is completed, the locating plate is put down again to be located, the second motor drives the impeller to move left and right, the first motor and the second motor are matched for use, the position of the impeller can be adjusted more accurately, and processing of a processing tool bit is facilitated.

S5, after impeller processing is completed, the impeller is moved to one side far away from a processing tool bit by utilizing the second motor, when the impeller moves to the lower side of the cleaning device, the operation of the second motor is stopped, the third cylinder is started, the third cylinder drives the connecting frame to move downwards, thereby driving the cleaning roller to move downwards, meanwhile, the cleaning motor is started to drive the driving gear to rotate, and due to the meshing effect between the driving gear and the driven gear, the driven gear rotates, thereby driving the cleaning roller to rotate, and the cleaning brush outside the cleaning roller cleans scrap iron produced by processing the tool bit at the top of the impeller, and simultaneously, the impeller is rotated under the action of the annular rack and the driving gear, so that the cleaning roller can clean the top of the impeller in an omnibearing manner.

And S6, after the cleaning is finished, the impeller is moved to an initial position by using the second motor again, the positioning plate is far away from the top of the impeller by using the first cylinder, and the impeller is taken out.

Compared with the prior art, the invention has the beneficial effects that:

1. through setting up guide rail, lead screw, annular rack, drive gear, second cylinder, driving motor and processing tool bit, utilize the guide rail to remove the impeller of waiting to process at tray top to the bottom of processing tool bit, simultaneously under guide rail, lead screw, annular rack, drive gear and the matched with use of second cylinder, make the processing tool bit carry out the position of processing to the impeller and adjust at will, production and processing are more nimble, the error when avoiding manual operation, the precision of impeller processing size has been improved, stop the flow of repeated reworking, accelerate production efficiency.

2. Through setting up the positioner who comprises first cylinder, lifter plate, telescopic link, extension spring and locating plate, utilize first cylinder to press the locating plate at the top of impeller to can inject the position of impeller, when processing tool bit work, avoid the impeller to rotate and the processing tool bit takes place relative motion, influence machining efficiency and quality.

3. Through setting up cleaning device, after processing the tool bit is accomplished to impeller processing, utilize the third cylinder to make the position of cleaning roller and impeller be close to, the cleaning roller rotates under the effect of clearance motor, the outside clearance brush of cleaning roller just clears up the produced iron fillings of top processing tool bit processing of impeller, makes the impeller rotatory under annular rack and drive gear's effect simultaneously to make the cleaning roller can carry out the omnidirectional clearance to the impeller top.

Drawings

FIG. 1 is a perspective view showing the overall appearance of the present invention;

FIG. 2 is a schematic view of a partial perspective structure of the present invention;

FIG. 3 is a schematic view of a partial cross-sectional structure of the present invention;

FIG. 4 is a schematic view of a partial perspective structure of the present invention;

FIG. 5 is a schematic perspective view of a positioning device according to the present invention;

FIG. 6 is a schematic view of a partial perspective structure of the present invention;

fig. 7 is a schematic perspective view of a cleaning device according to the present invention.

In the figure: 1. a bottom plate; 2. a guide rail; 3. a moving tray; 4. a tray; 5. a center limit rod; 6. an annular rack; 7. a drive gear; 8. a first motor; 9. a positioning device; 901. a first cylinder; 902. a lifting plate; 903. a telescopic rod; 904. a tension spring; 905. a positioning plate; 10. a screw rod; 11. a second motor; 12. a mounting frame; 13. a fixed plate; 14. a second cylinder; 15. a slide bar; 16. a sliding block; 17. a first connecting rod; 18. a second connecting rod; 19. a first connection plate; 20. a second connection pad; 21. a driving motor; 22. machining a cutter head; 23. a cleaning device; 2301. a third cylinder; 2302. a fixing frame; 2303. a connecting frame; 2304. a cleaning roller; 2305. a driven gear; 2306. a drive gear; 2307. and (5) cleaning the motor.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a hydraulic generator is key component preparation facilities for impeller, including bottom plate 1 and fixed disk 13, the equal fixed mounting in both ends at bottom plate 1 top has guide rail 2, movable disk 3 has been cup jointed to the inside of guide rail 2, tray 4 has been cup jointed at the top of movable disk 3, the outside fixed mounting of tray 4 has annular rack 6, one side meshing of annular rack 6 has drive gear 7, the top fixed mounting of movable disk 3 has positioner 9, screw rod 10 has been cup jointed in the bottom of movable disk 3, the top fixed mounting of bottom plate 1 has mounting bracket 12, the top fixed mounting of fixed disk 13 has second cylinder 14, the outside fixed mounting of fixed disk 13 has four slide bars 15, the outside of four slide bars 15 has cup jointed slider 16, the bottom of slider 16 articulates there is head rod 17, the inboard of head rod 17 articulates there is second connecting rod 18, one side that the head rod 17 was kept away from to the top of second connecting rod 18 articulates there is head rod 19, the bottom of head rod 17 articulates there is second connecting disk 20, the top fixed mounting bracket 21 of second connecting disk 20, the head of driving motor 21 has, the driving motor 21 has the end 22, head end 12 is fixed mounting bracket 22 is close to head 4 fixed mounting bracket 23 has the fixed mounting device 23.

In this embodiment, through setting up guide rail 2, lead screw 10, annular rack 6, drive gear 7, second cylinder 14, driving motor 21 and processing tool bit 22, utilize guide rail 2 to remove the impeller of waiting to process at tray 4 top to the bottom of processing tool bit 22, simultaneously under guide rail 2, lead screw 10, annular rack 6, drive gear 7 and the use of second cylinder 14 matched with, guide rail 2 and lead screw 10 move the left and right sides position of impeller, annular rack 6 and drive gear 7 that mesh can make the impeller rotate, thereby make processing tool bit 22 carry out the random adjustment to the position that needs to process of impeller, the production and processing is more nimble, avoid the error when manual operation, the accuracy of impeller machining size has been improved, stop the flow of repeated reworking, accelerate production efficiency, when driving second cylinder 14, second cylinder 14 drives first connecting disk 19 reciprocates, the second connecting rod 18 of this moment moves thereupon, thereby make head rod 17 expand or draw together, just reached and carried out the effect of adjusting to processing tool bit 22.

Specifically, the guide rail 2 is internally provided with a cross-shaped groove, and both ends of the bottom of the movable disc 3 are fixedly provided with cross bars which are matched with the specification and the size of the cross-shaped groove.

In this embodiment, cross strip movable mounting is in the inside of cross groove, and when moving the dish 3 moved, cross strip was slided in the inside of cross groove, had guaranteed to move the stability of dish 3 and tray 4, carried out stable removal to the impeller.

Specifically, the tray 4 is circular, and a center limiting rod 5 is fixedly installed at the top of the tray 4.

In this embodiment, the center of the impeller is placed outside the center stopper 5 by providing the center stopper 5, so that preliminary position limitation is performed on the impeller.

Specifically, the positioning device 9 includes a first cylinder 901, a lifting plate 902 is fixedly installed at the top of the first cylinder 901, a telescopic rod 903 is fixedly installed at one end, far away from the first cylinder 901, of the bottom of the lifting plate 902, a tension spring 904 is sleeved on the outer portion of the telescopic rod 903, and a positioning plate 905 is fixedly installed at the bottom of the telescopic rod 903.

In this embodiment, the bottom of the first cylinder 901 is fixedly connected with the movable disk 3, and by setting the positioning device 9, the first cylinder 901 is utilized to press the positioning plate 905 on the top of the impeller, so that the position of the impeller can be limited, and when the machining tool bit 22 works, the impeller is prevented from rotating and relatively moving with the machining tool bit 22, and the machining efficiency and quality are affected.

Specifically, the driving gear 7 is fixedly installed on the top of the moving disc 3, the first motor 8 is fixedly installed on the top of the driving gear 7, and the second motor 11 is fixedly installed on one side of the screw rod 10.

In this embodiment, the drive end and the drive gear 7 fixed connection of first motor 8, the drive end and the lead screw 10 fixed connection of second motor 11 reach the effect that the automation removed the impeller through setting up first motor 8 and second motor 11, have avoided manual operation, improve work efficiency.

Specifically, four slide bars 15 evenly and symmetrically distribute in the outside of fixed disk 13, and four slide bars 15 and mounting bracket 12 fixed connection, the bottom and the first connection dish 19 fixed connection of second cylinder 14.

In this embodiment, since the bottom of the second cylinder 14 is fixedly connected with the first connecting disc 19, when the second cylinder 14 is driven, the first connecting disc 19 moves up and down, so that the first connecting rod 17 and the second connecting rod 18 move relatively, and the effect of adjusting the position of the machining tool bit 22 is achieved.

Specifically, the cleaning device 23 includes a connection frame 2303, a third cylinder 2301 is fixedly installed at the top of the connection frame 2303, a cleaning roller 2304 is fixedly installed at the bottom of the connection frame 2303, a driven gear 2305 is fixedly installed at one end outside the cleaning roller 2304, a driving gear 2306 is meshed at the top of the driven gear 2305, and a cleaning motor 2307 is fixedly installed at one side of the driving gear 2306.

In this embodiment, after the impeller is machined by the machining tool bit 22, the cleaning device 23 is arranged, the third cylinder 2301 is used to make the cleaning roller 2304 approach to the position of the impeller, then the cleaning motor 2307 is driven, the cleaning motor 2307 drives the driving gear 2306 to rotate, and the cleaning roller 2304 rotates due to the meshing effect between the driving gear 2306 and the driven gear 2305, so that the cleaning roller 2304 cleans scrap iron generated by machining the top machining tool bit 22 of the impeller, and simultaneously rotates the impeller under the action of the annular rack 6 and the driving gear 7, so that the cleaning roller 2304 can clean the top of the impeller in all directions.

Specifically, the outside of third cylinder 2301 has cup jointed mount 2302, mount 2302 and mounting bracket 12 fixed connection, and driving gear 2306 fixed mounting is in the inboard of link 2303, and the outside of cleaning roller 2304 is provided with the clearance brush.

In this embodiment, the fixing frame 2302 is used to fix the position of the whole cleaning device 23 on one side of the mounting frame 12, and cleaning brushes are disposed outside the cleaning rollers 2304, so that cleaning of the impeller is facilitated.

s1, manually placing an impeller to be processed on the top of the tray 4, and sleeving the center of the impeller outside the center limiting rod 5.

S2, after the position of the impeller is approximately placed, the position of the impeller needs to be positioned by utilizing the positioning device 9, and a first cylinder 901 in the positioning device 9 is started respectively, and the first cylinder 901 drives the lifting plate 902 to move downwards, so that the positioning plate 905 is propped against the top end of the impeller downwards, and the extension spring 904 and the telescopic rod 903 at the moment are compressed.

S3, starting a second motor 11, wherein the second motor 11 drives the screw rod 10 to rotate, so that the movable disc 3 moves, the impeller moves towards the direction of the machining tool bit 22, then starting a second cylinder 14, pulling the distance between the impeller and the machining tool bit 22, the second cylinder 14 drives a first connecting disc 19 to move upwards, a second connecting rod 18 at the moment draws in the first connecting rod 17, the sliding block 16 slides outside the sliding rod 15, the machining tool bit 22 at the moment moves downwards, and meanwhile, starting a driving motor 21, and the driving motor 21 drives the machining tool bit 22 to rotate, so that the machining tool bit 22 machines the impeller.

S4, when the position to be processed is required to be adjusted, a first motor 8 and a second motor 11 are started respectively, the first motor 8 drives a driving gear 7 to rotate, and due to the meshing effect between the annular rack 6 and the driving gear 7, the tray 4 rotates, so that the impeller rotates, the positioning plate 905 is required to be far away from the top of the impeller before the impeller rotates, after the position rotation of the impeller is completed, the positioning plate 905 is put down again to be positioned, the second motor 11 drives the impeller to move left and right, the first motor 8 and the second motor 11 are matched for use, the position of the impeller can be adjusted more accurately, and the processing of the processing tool bit 22 is facilitated.

S5, after the impeller is machined, the impeller is moved to the side far away from the machining tool bit 22 by using the second motor 11, when the impeller moves to the lower side of the cleaning device 23, the operation of the second motor 11 is stopped, the third cylinder 2301 is started, the third cylinder 2301 drives the connecting frame 2303 to move downwards, so that the cleaning roller 2304 is driven to move downwards, meanwhile, the cleaning motor 2307 is started, the cleaning motor 2307 drives the driving gear 2306 to rotate, and the driven gear 2305 rotates due to the meshing effect between the driving gear 2306 and the driven gear 2305, so that the cleaning roller 2304 is driven to rotate, and scrap iron generated by machining the machining tool bit 22 at the top of the impeller is cleaned by a cleaning brush outside the cleaning roller 2304, and meanwhile, under the effect of the annular rack 6 and the driving gear 7, the impeller is enabled to rotate, so that the cleaning roller 2304 can clean the top of the impeller in an omnibearing manner.

And S6, after the cleaning is finished, the impeller is moved to an initial position by the second motor 11 again, the positioning plate 905 is far away from the top of the impeller by the first cylinder 901, and the impeller is taken out.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The key component preparation device for the hydraulic generator impeller comprises a bottom plate (1) and a fixed disc (13), and is characterized in that: guide rails (2) are fixedly installed at two ends of the top of the bottom plate (1), a movable disc (3) is sleeved in the guide rails (2), a tray (4) is sleeved in the top of the movable disc (3), an annular rack (6) is fixedly installed outside the tray (4), a driving gear (7) is meshed on one side of the annular rack (6), a positioning device (9) is fixedly installed on the top of the movable disc (3), a screw rod (10) is sleeved at the bottom of the movable disc (3), a mounting frame (12) is fixedly installed on the top of the bottom plate (1), a second air cylinder (14) is fixedly installed on the top of the fixed disc (13), four sliding rods (15) are fixedly installed on the outer sides of the fixed disc (13), sliding blocks (16) are sleeved on the outer sides of the sliding rods (15), a first connecting rod (17) are hinged to the bottom of the sliding blocks (16), a second connecting rod (18) is hinged to the inner side of the first connecting rod (17), a motor (20) is hinged to the top of the second connecting rod (18), a motor (20) is hinged to the bottom of the first connecting rod (17), the driving end of the driving motor (21) is fixedly provided with a processing tool bit (22), and one side of the mounting frame (12) close to the tray (4) is fixedly provided with a cleaning device (23);

the tray (4) is circularly arranged, and a central limiting rod (5) is fixedly arranged at the top of the tray (4);

the positioning device (9) comprises a first air cylinder (901), a lifting plate (902) is fixedly arranged at the top of the first air cylinder (901), a telescopic rod (903) is fixedly arranged at one end, far away from the first air cylinder (901), of the bottom of the lifting plate (902), a tension spring (904) is sleeved outside the telescopic rod (903), and a positioning plate (905) is fixedly arranged at the bottom of the telescopic rod (903);

the driving gear (7) is fixedly arranged at the top of the movable disc (3), a first motor (8) is fixedly arranged at the top of the driving gear (7), and a second motor (11) is fixedly arranged at one side of the screw rod (10);

the four sliding rods (15) are uniformly and symmetrically distributed outside the fixed disc (13), the four sliding rods (15) are fixedly connected with the mounting frame (12), and the bottom of the second air cylinder (14) is fixedly connected with the first connecting disc (19);

the cleaning device (23) comprises a connecting frame (2303), a third air cylinder (2301) is fixedly arranged at the top of the connecting frame (2303), a cleaning roller (2304) is fixedly arranged at the bottom of the connecting frame (2303), a driven gear (2305) is fixedly arranged at one end outside the cleaning roller (2304), a driving gear (2306) is meshed at the top of the driven gear (2305), and a cleaning motor (2307) is fixedly arranged at one side of the driving gear (2306).

2. The critical component manufacturing apparatus for a hydro-generator impeller according to claim 1, wherein: the inside of guide rail (2) has seted up the cross groove, the both ends of movable tray (3) bottom are all fixed mounting have the cross strip with cross groove specification size looks adaptation.

3. The critical component manufacturing apparatus for a hydro-generator impeller according to claim 1, wherein: the outside of third cylinder (2301) has cup jointed mount (2302), mount (2302) and mounting bracket (12) fixed connection, driving gear (2306) fixed mounting is in the inboard of link (2303), the outside of cleaning roller (2304) is provided with the clearance brush.

4. A production method using the key member production apparatus for a hydro-generator impeller according to any one of claims 1 to 3:

s1, manually placing an impeller to be processed on the top of a tray (4), and sleeving the center of the impeller outside a center limiting rod (5);

s2, after the position of the impeller is approximately placed, the position of the impeller is required to be positioned by utilizing a positioning device (9), a first cylinder (901) in the positioning device (9) is started respectively, and the first cylinder (901) drives a lifting plate (902) to move downwards, so that a positioning plate (905) is propped against the top end of the impeller downwards, and at the moment, a tension spring (904) and a telescopic rod (903) are compressed;

s3, starting a second motor (11), wherein the second motor (11) drives a screw rod (10) to rotate, so that a moving disc (3) moves, an impeller moves towards a machining tool bit (22), then starting a second air cylinder (14), the distance between the impeller and the machining tool bit (22) is shortened, the second air cylinder (14) drives a first connecting disc (19) to move upwards, at the moment, a second connecting rod (18) pulls in a first connecting rod (17), a sliding block (16) slides outside a sliding rod (15), the machining tool bit (22) moves downwards, and meanwhile, a driving motor (21) is started, and drives the machining tool bit (22) to rotate, so that the machining tool bit (22) machines the impeller;

s4, when the position to be machined is required to be adjusted, a first motor (8) and a second motor (11) are started respectively, the first motor (8) drives a driving gear (7) to rotate, and due to the meshing effect between an annular rack (6) and the driving gear (7), a tray (4) rotates, so that an impeller rotates, a positioning plate (905) is required to be far away from the top of the impeller before the impeller rotates, the positioning plate (905) is put down again for positioning after the position rotation of the impeller is completed, the second motor (11) drives the impeller to move left and right, and the first motor (8) and the second motor (11) are matched for use, so that the position of the impeller can be adjusted more accurately, and the machining of a machining tool bit (22) is facilitated;

s5, after the impeller is machined, the impeller is moved to the side far away from the machining tool bit (22) by utilizing the second motor (11), when the impeller moves to the lower part of the cleaning device (23), the operation of the second motor (11) is stopped, a third cylinder (2301) is started, the third cylinder (2301) drives a connecting frame (2303) to move downwards, so that a cleaning roller (2304) is driven to move downwards, meanwhile, a cleaning motor (2307) is started, the cleaning motor (2307) drives a driving gear (2306) to rotate, and the driven gear (2305) rotates due to the meshing effect between the driving gear (2306) and the driven gear (2305), so that the cleaning roller (2304) is driven to rotate, and a cleaning brush outside the cleaning roller (2304) cleans scrap iron generated by machining the impeller top of the impeller, and simultaneously, under the action of the annular rack (6) and the driving gear (7), the impeller is enabled to rotate, so that the cleaning roller (2304) can clean the top of the impeller in an all-round way;

and S6, after the cleaning is finished, the impeller is moved to an initial position by using the second motor (11), the positioning plate (905) is far away from the top of the impeller by using the first air cylinder (901), and the impeller is taken out.