CN117346952A - Device and method for correcting dynamic balance of fan impeller - Google Patents
Device and method for correcting dynamic balance of fan impeller Download PDFInfo
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- CN117346952A CN117346952A CN202311121238.5A CN202311121238A CN117346952A CN 117346952 A CN117346952 A CN 117346952A CN 202311121238 A CN202311121238 A CN 202311121238A CN 117346952 A CN117346952 A CN 117346952A
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- hub
- fixedly connected
- impeller
- dynamic balance
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 239000004519 grease Substances 0.000 claims description 118
- 230000001050 lubricating effect Effects 0.000 claims description 78
- 238000003860 storage Methods 0.000 claims description 46
- 238000004140 cleaning Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 26
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 24
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 24
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 22
- 238000005461 lubrication Methods 0.000 description 16
- 239000012535 impurity Substances 0.000 description 15
- 230000009191 jumping Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of impeller runout correction tables of fans, and particularly relates to a device and a method for correcting a fan impeller before dynamic balance, wherein the device for correcting the fan impeller before dynamic balance comprises a hub positioning shaft sleeve, a positioning mandrel, a hub tray, a turntable limiting sleeve, a rotating disc, a bearing box group, a turntable seat and a chassis; the inner diameters of the hub positioning shaft sleeve and the hub tray are matched with the outer diameter of the positioning mandrel at a smaller interval; the rotating disc is flexibly rotated by a set of double-row cylindrical roller bearings in the rotating disc. Meanwhile, the bottom of the rotating disc is supported by a set of rolling shafts of the bearing box group, so that the rotating disc can bear the weight of a large impeller, and is flexible, stable and labor-saving to rotate; the positioning mandrel is replaceable and can be sleeved with hub positioning shaft sleeves with different outer diameters, and the outer diameters of the hub positioning shaft sleeves are in small clearance fit with the inner holes of hubs so as to be suitable for runout correction of impellers with different hub apertures.
Description
Technical Field
The invention belongs to the technical field of impeller runout correction tables of fans, and particularly relates to a device and a method for correcting dynamic balance of a fan impeller.
Background
In machining, according to the technical requirements of impeller design, radial runout of an inlet of the impeller is achieved, and the end face circle runout of the front disc and the rear disc are required to be well positioned with an inner hole of the hub.
However, the above-mentioned techniques often have the following drawbacks: at present, two methods are generally adopted to improve the position accuracy of the runout of the inner hole and the outer end surface of a workpiece, one is to clamp the workpiece on a chuck of a vertical lathe, and the outer diameter of a vane of an alignment impeller is concentric with the inner hole of a hub. The marking hands for alignment are pressed by bolts on the tool rest, the marking hands are respectively moved to the inner holes of the front disc and the end surfaces of the front disc and the rear disc of the impeller, and the workbench of the vertical lathe is rotated, so that the positions of the inner holes of the front disc and the larger jumping positions of the front disc and the rear disc are found out, and marks are made. The workpiece is unloaded from the machine tool, and the part with larger jumping is heated at normal temperature. Repeating the method, then, putting the machine tool to find out the position with larger runout, and then shaping. The method has the problems that a large amount of time is consumed for correcting the workpiece for many times, equipment is occupied, and the quality of the workpiece is not guaranteed;
the other is to sleeve the mandrel (a chassis is welded) into the inner hole of the workpiece, manually rotate the workpiece, and point the scriber disc to the jumping position. The method has the problems that for the impeller with larger diameter and large mass, the workpiece cannot be rotated manually or the impeller cannot be rotated stably due to the small contact surface of the mandrel shaft shoulder, the jumping position cannot be found, and the quality of the workpiece cannot be ensured.
Therefore, the invention provides a device and a method for correcting the dynamic balance of a fan impeller.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a fan impeller dynamic balance front correction device which comprises a positioning mandrel, a rotating disc seat, a bearing box group and a chassis. The bottom of the positioning mandrel is provided with an inner spigot and six screw counter bores which are connected with the rotating disc, and the top is provided with a lifting hole. The outer ring of the positioning mandrel is matched with the inner hole of the hub tray and the inner hole of the hub positioning shaft sleeve (the outer diameter of the hub positioning shaft sleeve is determined according to the size of the inner hole of the impeller hub), the outer ring of the hub positioning shaft sleeve is in clearance fit with the inner hole of the corrected impeller hub, and the hub tray supports the end face of the impeller hub. The impellers with different hub apertures can be corrected by replacing the hub positioning shaft sleeve and the hub tray; the inner spigot is designed on the upper end surface of the rotating disc and matched with the positioning mandrel, the double-row cylindrical roller bearing is arranged on the inner spigot on the lower end surface of the rotating disc, the rotating disc limiting sleeve is connected with the rotating disc seat through a hexagon head bolt, and the excircle of the rotating disc limiting sleeve and the flange surface at the upper end are in clearance fit with the rotating disc; the inner ring of the double-row cylindrical roller bearing is fixed with the outer spigot of the turntable seat, and the outer ring is fixed with the inner spigot of the rotating disc, so that the rotating disc can flexibly rotate through the double-row cylindrical roller bearing; the lower part of the turntable seat is in interference fit connection with the chassis through the outer spigot; the bearing box sets are connected with the chassis through bearing shells and are uniformly distributed on the circumference of the chassis, and the bearing box sets support the bottom of the rotating disc through the rolling shafts, so that the rotating disc rotates stably and easily; the hub tray and the hub positioning shaft sleeve are replaced, so that the end face runout and radial runout of impellers with different hub apertures can be corrected, and the fan impeller dynamic balance front correction table provided by the mechanism is simple in structure and convenient to operate, and can cover the correction of the impellers with various different hub apertures. Particularly, the impeller with large diameter and large mass can be flexibly and easily rotated through the support of the rotating disc, so that the radial runout at the inlet of the front disc of the impeller and the correction of the end surface runout at the outlets of the front disc and the rear disc are achieved, and the quality of workpieces is ensured. The problem that the rotating disc is not rotated in the conventional design is solved, and the phenomenon that the vertical lathe occupies a machine tool is corrected by utilizing the rotating disc of the vertical lathe.
Preferably, the rotating disc is made of wear-resistant manganese steel, partial surface quenching is carried out, an annular area (an annular surface contacted with a rolling shaft of the bearing box group) at the bottom of the rotating disc is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and a group of support legs are welded at the bottom of the chassis; the rotating disc is made of wear-resistant manganese steel, and is subjected to local surface quenching, so that the wear resistance of the rotating disc can be improved, three supporting legs are welded at the bottom of the chassis, the whole runout correction table can be stably placed, the annular area at the bottom of the rotating disc is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and the impeller can flexibly rotate.
Preferably, the bearing box group comprises a bearing shell, a bearing box side cover, a rolling shaft and a deep groove ball bearing, wherein the deep groove ball bearing is sleeved at two ends of the rolling shaft, a gap between the bearing box side cover and the deep groove ball bearing is filled with molybdenum disulfide lubricating grease, and the deep groove ball bearing is arranged in the bearing shell; the gap between the bearing box side cover and the deep groove ball bearing is filled with molybdenum disulfide lubricating grease, so that the deep groove ball bearing can flexibly rotate, the bearing box sets are uniformly distributed and installed along the circumference of the chassis and used for supporting the rotating disc, and the rotating disc flexibly and stably rotates, so that the flexibility of the rotating disc during rotation is improved.
Preferably, the top surface fixedly connected with of chassis stores the box, the top surface intercommunication that stores the box has the discharge gate, the distance between discharge gate and the rolling disc is at-millimeter, the inner wall sealing sliding connection who stores the box has the push pedal, the top of push pedal stores the lubricating grease lubrication of molybdenum disulfide, the inner wall bottom surface fixedly connected with electric telescopic handle that stores the box, electric telescopic handle's output and push pedal fixed connection, the round hole rather than inside intercommunication has been seted up to one side of storing the box, and the position of round hole is located the below of push pedal; because in order to promote impeller pivoted flexibility, the annular region of rolling disc bottom scribbles the lubrication of 4-6 millimeter thick molybdenum disulfide lubricating grease, the circumstances of scribbling inhomogeneous circumstances appears easily when the manual work scribbles molybdenum disulfide lubricating grease lubrication, scribble more and can cause the waste, less can reduce the lubrication effect between roll axis and the rolling disc, can be when needs scribble molybdenum disulfide lubricating grease lubrication to the rolling disc bottom through above-mentioned mechanism this moment, start electric telescopic handle, make electric telescopic handle's output can promote the push pedal, the push pedal can promote the lubricating grease in the storage box this moment, make the lubricating grease carry out the ejection of compact from the discharge gate, because the distance between discharge gate and the rolling disc is at 4-6 millimeters, at this moment also can be at 4-6 millimeters from the lubricating grease that the discharge gate was exposed, at this moment rotate the rolling disc, make the continuous lubricating grease that is extruded (electric telescopic handle's output can slowly promote the push pedal, let continuous follow the discharge gate ejection of compact) can be evenly scribbled in the rolling disc bottom.
Preferably, a feeding hole is formed in one side of the discharging hole, a pair of baffles are fixedly connected to one side of the discharging hole, which is close to the feeding hole, a guide plate which is obliquely arranged is fixedly connected to one side of the baffles, which is close to each other, the bottom surface of the guide plate is aligned to the feeding hole, a chute is formed in one side of the baffle, which is far away from the storage box, a scraper blade is hermetically and slidingly connected to the inner wall of the chute, a first elastic rope is fixedly connected between the bottom surface of the scraper blade and the inner wall of the chute, a connecting plate is fixedly connected to the inner wall of the storage box, a hollow elastic block is fixedly connected to the top surface of the connecting plate, a connecting pipe is connected to the elastic block, and the other end of the connecting pipe penetrates through a round hole and is communicated with the chute; because the grease is smeared behind the rolling disc bottom, can meet the impurity in the air, the impurity can influence the lubrication effect of grease this moment, the grease is located the rolling disc bottom always simultaneously, when not needing the rolling disc to rotate, the grease can have the consumption because of various reasons, at this moment, can be when need correcting impeller, it paints in the rolling disc bottom to promote the grease with the help of the push pedal, then after correcting impeller hub, with the help of the output pulling push pedal of electric telescopic handle, at this moment the push pedal can extrude the elastomeric block, gas in the elastomeric block can enter into the spout from the connecting pipe and promote the scraper blade this moment, thereby make scraper blade and rolling disc bottom contact, at this moment clockwise rotation rolling disc, make the scraper blade scrape the grease of rolling disc bottom, at this moment the grease of being scraped off can flow into in the storage box along scraper blade, deflector and feed chute in proper order, timely recovery after the grease use has been reached through above-mentioned mechanism, reduce the daily consumption of grease, simultaneously can also protect the grease, improve the lubrication effect of grease.
Preferably, the top surface of the inner wall of the storage box is slidably connected with a sealing block for sealing the bottom end of the discharge hole, the bottom surface of the sealing block is in an inclined surface shape, the inclined surface of the sealing block is fixedly connected with a first magnetic block, the top surface of the pushing plate is fixedly connected with a second magnetic block which repels the first magnetic block, the first magnetic block and the second magnetic block are arranged in a staggered manner, and a spring is fixedly connected between one side of the pushing plate far away from the round hole and the inner wall of the storage box; because the discharge gate is open, there is impurity entering into the storage box from the discharge gate at this moment, impurity and lubricating grease mix the back, can reduce the lubricated effect of lubricating grease, this moment can be when the push pedal upwards moves through above-mentioned mechanism, can promote first magnetic path with the second magnetic path of first magnetic path dislocation setting, this moment the push pedal can remove from the discharge gate below, the lubricating grease of storage in the push pedal top can normally follow the discharge gate and go out the ejection of compact, when the push pedal moves down, first magnetic path and second magnetic path can keep away from no longer repel, at this moment the spring can promote the sealing block and seal the bottom of discharge gate, thereby reach when the lubricating grease is discharged from the discharge gate in need of lubricating grease, open the discharge gate by oneself, then when need not discharging, the discharge gate can be protected by the sealing seal.
Preferably, the inner wall of the feed inlet is rotationally connected with a sealing plate for sealing the feed inlet through a torsion spring, one side of the discharge outlet, which is close to the scraping plate, is fixedly connected with a rectangular block, one side of the sealing plate, which is close to the scraping plate, is fixedly connected with a connecting wire, and the connecting wire penetrates through the inside of the rectangular block; when the scraper blade will pull the connecting wire when being pushed by gas, at this moment the connecting wire can pull the closing plate, and the closing plate can no longer seal the feed inlet at this moment, and at this moment lubricating grease can normally fill in the feed inlet enters into the storage box, then when the push pedal moves down, first elastic rope can pull the scraper blade and reset, and at this moment the connecting wire can be in the state of loosening, and the closing plate can reset under the drive of torsional spring and seal the feed inlet at this moment, and impurity in the air can enter into in the storage box from the feed inlet to further improve the effect of protecting lubricating grease in the storage box.
Preferably, a cleaning block made of metal materials is slidingly connected to one side, far away from the connecting pipe, of the guide plate, the top surface of the cleaning block is in an inclined surface shape, a cavity is formed in the guide plate, a connecting groove communicated with the cavity and the sliding groove is formed in the guide plate, a magnetic plate magnetically attracted with the cleaning block is hermetically and slidingly connected in the cavity, an air outlet groove is formed in one side of the guide plate, one end of the air outlet groove is communicated with the cavity, and a second elastic rope is fixedly connected between the top surface of the magnetic plate and the inner wall of the cavity; because the lubricating grease is not liquid, the flowing effect of lubricating grease can be poor, thereby lead to the unable fine entering of lubricating grease that the scraper blade scraped to store in the box, can strike off the completion at the scraper blade at this moment, let the scraper blade receive in the spout, lubricating grease on the scraper blade can be scraped by the deflector this moment, thereby make lubricating grease all build up on the deflector, then continue extrusion elastomeric block with the help of the output pulling push pedal of electric telescopic handle, the gas in this in-process rectangular channel can push away the push pedal earlier and rotate the contact of dish bottom, at this moment the push pedal can no longer block the spread groove, then gas in the rectangular channel can enter into the cavity, make gas promote the magnetic plate and remove, at this moment also can remove with the cleaning block that the magnetic plate is inhaled, thereby make the cleaning block advance the feed chute on with the deflector in, then reentrant storage box, and then improve the effect of retrieving lubricating grease.
Preferably, the cleaning block is of a hollow structure, a group of first spheres made of magnetic materials are arranged in the cleaning block, a group of second spheres which repel the first spheres are fixedly connected in the scraping plate, and the cleaning block is made of elastic materials; because the lubricating grease on the scraper blade is scraped by the deflector, more lubricating grease can be left on the inclined plane of the cleaning block, and at this moment, when the scraper blade stretches and contracts, the second ball intermittently passes through the first ball, the second ball can repel each other through the first ball, and at this moment, the first ball can strike the cleaning block, so that the cleaning block shakes, and the lubricating grease on the cleaning block shakes off, so that the self-cleaning effect on the cleaning block is achieved.
The invention provides a method for correcting a fan impeller before dynamic balance, which adopts the device for correcting the fan impeller before dynamic balance, and comprises the following steps:
s1: the hub positioning shaft sleeve, the positioning mandrel, the hub tray, the turntable limiting sleeve, the turntable, the bearing box group, the turntable seat and the chassis are assembled into a runout correction table before dynamic balance of the fan impeller;
s2: selecting a hub tray and a hub positioning shaft sleeve with proper sizes according to the inner holes of the impeller hubs, then installing the hub tray and the hub positioning shaft sleeve on a positioning mandrel, and then sleeving the inner holes of the impeller hubs on the hub positioning shaft sleeve; then the impeller is rotated, at the moment, the rotating disc can flexibly rotate through the double-row cylindrical roller bearings, and meanwhile, the bearing box group supports the bottom of the rotating disc through the rolling shaft, so that the rotating disc stably and easily rotates;
s3: and then the impeller is rotated, and the rotating disc can flexibly rotate through the double-row cylindrical roller bearing, so that radial runout at the inlet of the front disc of the impeller and correction of end face runout at the outlet of the front disc and the rear disc are completed.
The method can correct the impellers with different hub holes, can reduce the resistance of the impellers during rotation, and is more beneficial to correcting the impellers.
The beneficial effects of the invention are as follows:
1. according to the fan impeller dynamic balance front runout correction table provided by the invention, the rotating disc is flexibly rotated by the rotating disc coiling shaft disc seat through the set of double-row cylindrical roller bearings in the rotating disc. Meanwhile, the bottom of the rotating disc is supported by a set of rolling shafts of the bearing box group, so that the rotating disc can bear the weight of a large impeller, and is flexible, stable and labor-saving to rotate; the positioning mandrel is provided with a replaceable and sleeved wheel hub positioning shaft sleeve with different outer diameters, the outer diameter of the wheel hub positioning shaft sleeve is in small clearance fit with the inner hole of the wheel hub so as to be suitable for runout correction of impellers with different wheel hub apertures, and the device solves the problems that the large-diameter impeller cannot rotate around the center manually, and the alignment and clamping on a machine tool take time and occupy the machine tool; in addition, the positioning mandrel can be sleeved with hub shaft sleeves with different outer diameters, so that a plurality of single impeller correction tool tables are saved.
2. The rotating disc is made of wear-resistant manganese steel, and the wear resistance of the rotating disc can be improved by carrying out local surface quenching, three supporting legs are welded at the bottom of the chassis, so that the whole runout correction table can be stably placed, the annular area at the bottom of the rotating disc is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and the impeller can flexibly rotate.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view of the positioning spindle, the rotating disc and the turntable base of the present invention.
Fig. 3 is a schematic view of the structure of the bearing cartridge set in the present invention.
Fig. 4 is a schematic structural diagram of the second embodiment of the present invention.
Fig. 5 is a perspective view of a storage case according to the present invention.
Fig. 6 is a schematic view of the internal structure of the storage case of the present invention.
Fig. 7 is a cross-sectional view of a deflector and a flight in the present invention.
Fig. 8 is an enlarged view at a of fig. 7.
Fig. 9 is a flow chart of a method in the present invention.
In the figure: 1. hub positioning shaft sleeve; 2. positioning a mandrel; 3. a hub tray; 4. an inner hexagon bolt; 5. a hex head bolt; 6. a limit sleeve; 7. a rotating disc; 8. double-row cylindrical roller bearings; 9. a turntable seat; 10. a bearing box group; 101. a hexagonal screw; 102. a bearing box side cover; 103. deep groove ball bearings; 104. a bearing housing; 105. a rolling shaft; 11. a chassis; 12. a fixing bolt; 13. a support leg; 14. a storage box; 15. a discharge port; 16. an electric telescopic rod; 17. a push plate; 18. a sealing block; 19. a first magnetic block; 20. a spring; 21. a second magnetic block; 22. an air outlet groove; 23. a guide plate; 24. a chute; 25. a scraper; 26. a connecting plate; 27. an elastic block; 28. a connecting pipe; 29. a first elastic cord; 30. a feed inlet; 31. a sealing plate; 32. a connecting wire; 33. rectangular blocks; 34. a baffle; 35. cleaning the block; 36. a cavity; 37. a connecting groove; 38. a second elastic cord; 39. a magnetic plate; 40. a first sphere; 42. and a second sphere.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one: as shown in fig. 1 to 3, the device for correcting the dynamic balance of a fan impeller according to the embodiment of the invention comprises a positioning mandrel 2, a rotating disc 7, a rotating disc seat 9, a bearing box group 10 and a chassis 11. The outer spigot and six screw counter bores are arranged at the bottom of the positioning mandrel 2 and are connected with the rotating disc 7, and the lifting hole is arranged at the top of the positioning mandrel. The outer circle of the positioning mandrel 2 is matched with the inner hole of the hub tray 3 and the inner hole of the hub positioning shaft sleeve 1 (the outer diameter of the hub positioning shaft sleeve 1 is determined according to the size of the inner hole of the impeller hub), the outer circle of the hub positioning shaft sleeve 1 is in clearance fit with the inner hole of the corrected impeller hub, and the hub tray 3 supports the end face of the impeller hub. The impellers with different hub apertures can be corrected by replacing the hub positioning shaft sleeve 1 and the hub tray 3; the upper end face of the rotating disc 7 is provided with an inner spigot which is matched with the positioning mandrel 2, the lower end face is provided with an inner spigot which is provided with a double-row cylindrical roller bearing 8, the rotating disc limiting sleeve 6 is connected with the rotating disc seat 9 through a hexagon head bolt 5, and the outer circle of the rotating disc limiting sleeve 6 and the flange surface at the upper end are in clearance fit with the rotating disc 7.
The inner ring of the double-row cylindrical roller bearing 8 is fixed with the outer spigot of the turntable seat 9, and the outer ring is fixed with the inner spigot of the rotating disc 7, so that the rotating disc 7 can flexibly rotate through the double-row cylindrical roller bearing 8; the lower part of the turntable seat 9 is connected with the chassis 11 through an outer spigot in an interference fit manner; the bearing box group 10 is connected with the chassis 11 through the bearing shell 104 and is circumferentially and uniformly distributed on the chassis 11, and the bearing box group 10 supports the bottom of the rotating disc 7 through the rolling shaft 105 so that the rotating disc 7 rotates stably and easily; the hub tray 3 and the hub positioning shaft sleeve 1 are replaced, so that the end face circle runout and the radial circle runout of impellers with different hub apertures can be corrected, the fan impeller runout correction table provided by the mechanism is simple in structure and convenient to operate, and correction of multiple impellers with different hub apertures can be covered. Particularly, the impeller with large diameter and large mass can be flexibly and easily rotated by the support of the rotating disc 7, so that the radial runout at the inlet of the impeller and the correction of the runout at the end surfaces of the outlets of the front disc and the rear disc can be achieved, and the quality of workpieces is ensured. The problem that the rotating disc 7 is not rotated in the conventional design is solved, and the phenomenon that the vertical lathe occupies a machine tool is corrected by utilizing the vertical lathe rotating disc 7.
The rotating disc 7 is made of wear-resistant manganese steel, partial surface quenching is carried out, an annular area (an annular surface contacted with a rolling shaft 105 of the bearing box group 10) at the bottom of the rotating disc 7 is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and a group of supporting feet 13 are welded at the bottom of the chassis 11; the rotating disc 7 is made of wear-resistant manganese steel, and is subjected to local surface quenching, so that the wear resistance of the rotating disc 7 can be improved, three supporting legs 13 are welded at the bottom of the chassis 11, the whole runout correction table can be stably placed, the annular area at the bottom of the rotating disc 7 is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and the impeller can rotate flexibly.
The bearing box group 10 comprises a bearing shell 104, a bearing box side cover 102, a rolling shaft 105 and a deep groove ball bearing 103, wherein the deep groove ball bearing 103 is sleeved at two ends of the rolling shaft 105, a gap between the bearing box side cover 102 and the deep groove ball bearing 103 is filled with molybdenum disulfide lubricating grease, and the deep groove ball bearing 103 is arranged in the bearing shell 104; the gap between the bearing box side cover 102 and the deep groove ball bearing 103 is filled with molybdenum disulfide lubricating grease, so that the deep groove ball bearing 103 can flexibly rotate, the bearing box group 10 is uniformly distributed and installed along the circumference of the chassis 11 and used for supporting the rotating disc 7, and the rotating disc 7 flexibly and stably rotates, so that the flexibility of the rotating disc 7 during rotation is improved.
Embodiment two: as shown in fig. 4 to 8, a comparative example one in which another embodiment of the present invention is: the top surface fixedly connected with of chassis 11 stores box 14, the top surface intercommunication of storing box 14 has discharge gate 15, the distance between discharge gate 15 and the rolling disc 7 is 4-6 millimeters, the sealed sliding connection of inner wall of storing box 14 has push pedal 17, molybdenum disulfide lubricating grease lubrication has been stored to the top of push pedal 17, the inner wall bottom surface fixedly connected with electric telescopic handle 16 of storing box 14, electric telescopic handle 16's output and push pedal 17 fixed connection, the round hole rather than inside intercommunication has been seted up to one side of storing box 14, and the position of round hole is located the below of push pedal 17.
Because in order to promote impeller pivoted flexibility, the annular area of rotor disk 7 bottom scribbles the molybdenum disulfide lubricating grease lubrication of 4-6 millimeter thick, the condition of scribbling inhomogeneous appears easily when artifical scribbling molybdenum disulfide lubricating grease lubrication, scribble more and can cause the waste, less can reduce the lubricated effect between roll axis 105 and the rotor disk 7, this moment can be when need scribble molybdenum disulfide lubricating grease lubrication to rotor disk 7 bottom through above-mentioned mechanism, start electric telescopic handle 16, make electric telescopic handle 16's output can promote push pedal 17, push pedal 17 can promote the lubricating grease in the storage box 14 at this moment, make the lubricating grease carry out the ejection of compact from discharge gate 15, because the distance between discharge gate 15 and the rotor disk 7 is at 4-6 millimeter, at this moment also can be at 4-6 millimeter from the lubricating grease that the discharge gate 15 was exposed, at this moment rotor disk 7, make the lubricating grease that is constantly extruded (electric telescopic handle 16's output can slowly promote push pedal 17, let lubricating grease continuously follow the discharge gate 15 ejection of compact) can be evenly scribbled in rotor disk 7 bottom.
The utility model discloses a storage box, including storage box 14, discharge gate 15, baffle 34, guide plate 23, spout 24, scraper 25, first elastic rope 29, connecting plate 26's top surface fixedly connected with hollow elastic block 27, the connecting pipe 28 is linked to in the elastic block 27, the other end of connecting pipe 28 passes the round hole and communicates with spout 24, the spout 24 has been seted up to one side that the discharge gate 15 was seted up to one side, the discharge gate 30 of, one side that the discharge gate 15 is close to the feed gate 30, baffle 34 is close to one side fixedly connected with a pair of baffle 23 of one side fixedly connected with, the baffle 23's bottom surface aligns with feed gate 30, spout 24 is seted up to one side that the baffle 34 kept away from the storage box 14, the inner wall sealing sliding connection of spout 24 has scraper 25, fixedly connected with first elastic rope 29 between the bottom surface of scraper 25 and the spout 24 inner wall, the inner wall fixedly connected with connecting plate 26, hollow elastic block 27 of top surface fixedly connected with of connecting plate 26, connecting pipe 28 in-connection.
Because the grease is smeared at the bottom of the rotating disc 7 and then can encounter the impurity in the air, the impurity can influence the lubrication effect of the grease at the moment, and meanwhile, the grease is always positioned at the bottom of the rotating disc 7, when the rotating disc 7 is not required to rotate, the grease can be consumed for various reasons, at the moment, when the impeller hub needs to be corrected, the grease is smeared at the bottom of the rotating disc 7 by pushing the push plate 17, then after the impeller hub is corrected, the push plate 17 is pulled by the output end of the electric telescopic rod 16, at the moment, the push plate 17 can squeeze the elastic block 27, at the moment, the gas in the elastic block 27 can enter the chute 24 from the connecting pipe 28 to push the scraper 25, thereby enabling the scraper 25 to be in contact with the bottom of the rotating disc 7, at the moment, the rotating disc 7 is clockwise rotated, the scraped grease at the bottom of the scraper 25 can flow into the storage box 14 sequentially along the scraper 25, the guide plate 23 and the feeding groove, the grease can be timely recovered after the grease is used by the mechanism, the consumption of the grease is reduced, and the daily lubrication effect of the grease can be further protected.
The inner wall top surface sliding connection of storage box 14 has the sealing block 18 that seals the discharge gate 15 bottom, the bottom surface of sealing block 18 is the inclined plane form, the inclined plane fixedly connected with first magnetic path 19 of sealing block 18, the top surface fixedly connected with of push pedal 17 and the second magnetic path 21 that first magnetic path 19 repulsed, first magnetic path 19 and second magnetic path 21 dislocation set, the push pedal 17 is kept away from between one side of round hole and the storage box 14 inner wall fixedly connected with spring 20.
Because discharge gate 15 is open, there is impurity from discharge gate 15 entering into storage box 14 at this moment, impurity and lubricating grease mix the back, can reduce the lubrication effect of lubricating grease, this moment can be when push pedal 17 upwards remove through above-mentioned mechanism, second magnetic path 21 with first magnetic path 19 dislocation set can promote first magnetic path 19, this moment push pedal 17 can remove from the discharge gate 15 below, the lubricating grease of storage in push pedal 17 top can normally follow discharge gate 15 this moment, when push pedal 17 moves down, first magnetic path 19 and second magnetic path 21 can keep away from no longer to repel each other, this moment spring 20 can promote sealing block 18 to the bottom of discharge gate 15, thereby reach when needs lubricating grease to carry out the ejection of compact from discharge gate 15, open discharge gate 15 by oneself, then when need not carry out the ejection of compact, discharge gate 15 can be protected by the sealing up to lubricating grease.
The inner wall of the feed inlet 30 is rotationally connected with a sealing plate 31 for sealing the feed inlet through a torsion spring, one side of the discharge outlet 15 close to the scraper 25 is fixedly connected with a rectangular block 33, one side of the sealing plate 31 close to the scraper 25 is fixedly connected with a connecting line 32, and the connecting line 32 penetrates through the inside of the rectangular block 33; when scraper 25 will pull connecting wire 32 when being pushed by gas, at this moment connecting wire 32 can pull closing plate 31, at this moment closing plate 31 can no longer seal feed inlet 30, at this moment lubricating grease can normally fill feed inlet 30 and enter into storage box 14, then when push pedal 17 moves down, first elastic rope 29 can pull scraper 25 and reset, at this moment connecting wire 32 can be in the state of loosening, at this moment closing plate 31 can reset under the drive of torsional spring and seal feed inlet 30, at this moment impurity in the air can enter into storage box 14 from feed inlet 30, thereby further improve the effect of protecting lubricating grease in the storage box 14.
The guide plate 23 is far away from the cleaning block 35 made of metal materials and connected with one side of the connecting pipe 28 in a sliding manner, the top surface of the cleaning block 35 is in an inclined surface shape, a cavity 36 is formed in the guide plate 23, a connecting groove 37 communicated with the cavity 36 and the sliding groove 24 is formed in the guide plate 23, a magnetic plate 39 magnetically attracted with the cleaning block 35 is connected in the cavity 36 in a sealing sliding manner, an air outlet groove 22 is formed in one side of the guide plate 23, one end of the air outlet groove 22 is communicated with the cavity 36, and a second elastic rope 38 is fixedly connected between the top surface of the magnetic plate 39 and the inner wall of the cavity 36.
Because the lubricating grease is not liquid, the flowing effect of the lubricating grease can be poor, so that the lubricating grease scraped by the scraper 25 can not enter the storage box 14 well, at the moment, the lubricating grease can be scraped by the scraper 25, the scraper 25 is retracted into the chute 24, at the moment, the lubricating grease on the scraper 25 can be scraped by the guide plate 23, so that the lubricating grease is accumulated on the guide plate 23, then the pushing plate 17 is pulled by the output end of the electric telescopic rod 16 to continuously squeeze the elastic block 27, in the process, the gas in the rectangular groove can be pushed to the pushing plate 17 to contact with the bottom surface of the rotating disc 7, at the moment, the pushing plate 17 can not block the connecting groove 37 any more, then the gas in the rectangular groove can enter the cavity 36, so that the gas pushes the magnetic plate 39 to move, at the moment, the cleaning block 35 magnetically attracted with the magnetic plate 39 can also move, so that the cleaning block 35 pushes the lubricating grease on the guide block into the feeding groove, and then enters the storage box 14 again, and the effect of recovering the lubricating grease is improved.
The cleaning block 35 is of a hollow structure, a group of first balls 40 made of magnetic materials are arranged in the cleaning block 35, a group of second balls 42 which repel the first balls 40 are fixedly connected in the scraper 25, and the cleaning block 35 is made of elastic materials; because after the grease on the scraper 25 is scraped by the guide plate 23, more grease is left on the inclined plane of the cleaning block 35, at this time, when the scraper 25 stretches and contracts, the second ball 42 intermittently passes through the first ball 40, the second ball 42 can repel each other through the first ball 40, at this time, the first ball 40 can strike the cleaning block 35, so that the cleaning block 35 shakes, and the grease on the cleaning block 35 shakes off, thereby achieving the effect of self-cleaning the cleaning block 35.
As shown in fig. 9, the present invention further provides a method for correcting a fan impeller before dynamic balance, which adopts the device for correcting a fan impeller before dynamic balance, and the method comprises the following steps:
s1: the hub positioning shaft sleeve 1, the positioning mandrel 2, the hub tray 3, the turntable limiting sleeve 6, the turntable, the bearing box group 10, the turntable seat 9 and the chassis 1 are assembled into a runout correction table before dynamic balance of the impeller of the wind turbine;
s2: selecting a hub tray 3 and a hub positioning shaft sleeve 1 with proper sizes according to the inner holes of the impeller hubs, then installing the hub tray 3 and the hub positioning shaft sleeve on a positioning mandrel 2, and then sleeving the inner holes of the impeller hubs on a hub positioning shaft; then the impeller is rotated, at the moment, the rotating disc 7 can flexibly rotate through the double-row cylindrical roller bearing 8, and meanwhile, the bearing box group 10 supports the bottom of the rotating disc 7 through the rolling shaft 105, so that the rotating disc 7 can stably and easily rotate;
s3: then the impeller is rotated, and at the moment, the rotating disc 7 can flexibly rotate through the double-row cylindrical roller bearing 8 so as to finish the correction of radial runout at the inlet of the front disc of the impeller and the end face runout at the outlet of the front disc and the rear disc.
The method can correct the impellers with different hub holes, can reduce the resistance of the impellers during rotation, and is more beneficial to correcting the impellers.
Working principle: the bearing box group 10 is connected with the chassis 11 through the bearing shell 104 and is circumferentially and uniformly distributed on the chassis 11, and the bearing box group 10 supports the bottom of the rotating disc 7 through the rolling shaft 105 so that the rotating disc 7 rotates stably and easily; the hub tray 3 and the hub positioning shaft sleeve 1 are replaced, so that the end face runout and radial runout of impellers with different hub apertures can be corrected, and the fan impeller runout correction table provided by the mechanism is simple in structure and convenient to operate, and can cover the correction of multiple impellers with different hub apertures. Particularly, the impeller with large diameter and large mass can be flexibly and easily rotated by the support of the rotating disc 7, so that the radial runout at the inlet of the front disc of the impeller and the correction of the end surface runout at the outlets of the front disc and the rear disc are achieved, and the quality of workpieces is ensured. The problem that the rotating disc 7 is not rotated in the conventional design is solved, and the phenomenon that the vertical lathe is occupied by the rotating disc 7 is corrected; the rotating disc 7 is made of wear-resistant manganese steel, and is subjected to local surface quenching, so that the wear resistance of the rotating disc 7 can be improved, three supporting legs 13 are welded at the bottom of the chassis 11, the whole runout correction table can be stably placed, the annular area at the bottom of the rotating disc 7 is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and the impeller can rotate flexibly.
Because in order to promote the flexibility of impeller rotation, the annular area at the bottom of the rotating disc 7 is lubricated by molybdenum disulfide grease with the thickness of 4-6 mm, the situation of uneven smearing easily occurs when the molybdenum disulfide grease is manually smeared, more waste is caused, the lubricating effect between the rolling shaft 105 and the rotating disc 7 is reduced, at the moment, when the molybdenum disulfide grease is smeared at the bottom of the rotating disc 7 through the mechanism, the electric telescopic rod 16 is started, the output end of the electric telescopic rod 16 can push the push plate 17, at the moment, the push plate 17 can push the grease in the storage box 14, the grease is discharged from the discharge hole 15, and because the distance between the discharge hole 15 and the rotating disc 7 is 4-6 mm, the grease exposed from the discharge hole 15 is also 4-6 mm, at the moment, the rotating disc 7 is rotated, and the grease which is continuously extruded (the output end of the electric telescopic rod 16 can slowly push the push plate 17, and the grease is continuously discharged from the discharge hole 15) can be smeared at the bottom of the rotating disc 7 uniformly; because the grease is smeared at the bottom of the rotating disc 7 and then can encounter the impurity in the air, the impurity can influence the lubrication effect of the grease at the moment, and meanwhile, the grease is always positioned at the bottom of the rotating disc 7, when the rotating disc 7 is not required to rotate, the grease can be consumed for various reasons, at the moment, when the impeller hub needs to be corrected, the grease is smeared at the bottom of the rotating disc 7 by pushing the push plate 17, then after the impeller hub is corrected, the push plate 17 is pulled by the output end of the electric telescopic rod 16, at the moment, the push plate 17 can squeeze the elastic block 27, at the moment, the gas in the elastic block 27 can enter the chute 24 from the connecting pipe 28 to push the scraper 25, thereby enabling the scraper 25 to be in contact with the bottom of the rotating disc 7, at the moment, the rotating disc 7 is clockwise rotated, the scraped grease at the bottom of the scraper 25 can flow into the storage box 14 sequentially along the scraper 25, the guide plate 23 and the feeding groove, the grease can be timely recovered after the grease is used by the mechanism, the consumption of the grease is reduced, and the daily lubrication effect of the grease can be further protected.
Because the discharge port 15 is open, impurities enter the storage box 14 from the discharge port 15, the lubricating effect of the lubricating grease can be reduced after the impurities are mixed with the lubricating grease, the second magnetic block 21 which is arranged in a staggered manner with the first magnetic block 19 can push the first magnetic block 19 when the push plate 17 moves upwards through the mechanism, the push plate 17 can move away from the lower part of the discharge port 15, the lubricating grease stored above the push plate 17 can be discharged from the discharge port 15 normally, the first magnetic block 19 and the second magnetic block 21 can be far away from each other and do not repel each other when the push plate 17 moves downwards, the spring 20 can push the sealing block 18 to seal the bottom end of the discharge port 15, so that the purpose that the discharge port 15 is opened by itself when the lubricating grease is required to be discharged from the discharge port 15, and then the discharge port 15 can be sealed to protect the lubricating grease when the discharge is not required is achieved; when scraper 25 will pull connecting wire 32 when being pushed by gas, at this moment connecting wire 32 can pull closing plate 31, at this moment closing plate 31 can no longer seal feed inlet 30, at this moment lubricating grease can normally fill feed inlet 30 and enter into storage box 14, then when push pedal 17 moves down, first elastic rope 29 can pull scraper 25 and reset, at this moment connecting wire 32 can be in the state of loosening, at this moment closing plate 31 can reset under the drive of torsional spring and seal feed inlet 30, at this moment impurity in the air can enter into storage box 14 from feed inlet 30, thereby further improve the effect of protecting lubricating grease in the storage box 14.
Because the lubricating grease is not liquid, the flowing effect of the lubricating grease can be poor, so that the lubricating grease scraped by the scraper 25 can not enter the storage box 14 well, at the moment, the lubricating grease can be scraped by the scraper 25, the scraper 25 is retracted into the chute 24, at the moment, the lubricating grease on the scraper 25 can be scraped by the guide plate 23, so that the lubricating grease is accumulated on the guide plate 23, then the pushing plate 17 is pulled by the output end of the electric telescopic rod 16 to continuously squeeze the elastic block 27, in the process, the gas in the rectangular groove can be pushed to the pushing plate 17 to contact with the bottom surface of the rotating disc 7, at the moment, the pushing plate 17 can not block the connecting groove 37 any more, then the gas in the rectangular groove can enter the cavity 36, so that the gas pushes the magnetic plate 39 to move, at the moment, the cleaning block 35 magnetically attracted with the magnetic plate 39 can also move, so that the cleaning block 35 pushes the lubricating grease on the guide block into the feeding groove, and then enters the storage box 14 again, and the effect of recovering the lubricating grease is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A correcting device before dynamic balance of a fan impeller comprises a hub positioning shaft sleeve (1), a positioning mandrel (2), a hub tray (3), a turntable limiting sleeve (6), a rotating disc (7), a bearing box group (10), a turntable seat (9) and a chassis (11); the method is characterized in that: the inner diameter of a hub positioning shaft sleeve (1) and a hub tray (3) are matched with the outer diameter of a positioning mandrel (2) at smaller intervals, an upper spigot and a lower spigot are designed on a rotating disc (7) and concentric with an inner hole, the upper spigot is concentrically connected with an outer spigot of the positioning mandrel (2) through an inner hexagon bolt (4), a double-row cylindrical roller bearing (8) is mounted on the lower spigot, the inner hole of the double-row cylindrical roller bearing is matched with the outer circle of a turntable seat (9), the positioning mandrel (2), the rotating disc (7) and the turntable seat (9) are concentrically connected through a turntable limiting sleeve (6) and a hexagon bolt (5), and a bearing box group (10) is uniformly distributed along the circumference of a chassis (11) and fixed on the chassis (11) by means of fixing bolts (12).
2. The fan impeller dynamic balance pre-correction device according to claim 1, wherein: the rotating disc (7) is made of wear-resistant manganese steel, local surface quenching is carried out, an annular area at the bottom of the rotating disc (7) is lubricated by molybdenum disulfide lubricating grease with the thickness of 4-6 mm, and a group of supporting feet (13) are welded at the bottom of the chassis (11).
3. The fan impeller dynamic balance pre-correction device according to claim 2, wherein: bearing box group (10) are including bearing shell (104), bearing box side cap (102), roll axis (105) and deep groove ball bearing (103), roll axis (105) both ends suit deep groove ball bearing (103), the space between bearing box side cap (102) and the deep groove ball bearing (103) is filled with molybdenum disulfide lubricating grease, deep groove ball bearing (103) are installed in bearing shell (104), bearing box side cap (102) are with the help of a plurality of hex screw (101) and bearing shell (104) fixed connection.
4. A fan wheel dynamic balance pre-correction device according to claim 3, wherein: the novel multifunctional electric rotating disc comprises a chassis (11), wherein a storage box (14) is fixedly connected to the top surface of the chassis (11), a discharge hole (15) is formed in the top surface of the storage box (14) in a communicating mode, the distance between the discharge hole (15) and a rotating disc (7) is 4-6 mm, a push plate (17) is connected to the inner wall of the storage box (14) in a sealing sliding mode, molybdenum disulfide lubricating grease is stored above the push plate (17), an electric telescopic rod (16) is fixedly connected to the bottom surface of the inner wall of the storage box (14), the output end of the electric telescopic rod (16) is fixedly connected with the push plate (17), a round hole communicated with the inside of the electric telescopic rod is formed in one side of the storage box (14), and the position of the round hole is located below the push plate (17).
5. The fan impeller dynamic balance pre-correction device according to claim 4, wherein: feed inlet (30) have been seted up to one side of discharge gate (15), one side fixedly connected with baffle (34) that discharge gate (15) is close to feed inlet (30), one side fixedly connected with slope that baffle (34) are close to each other sets up deflector (23), the bottom surface and feed inlet (30) of deflector (23) align, spout (24) have been seted up to one side that storage box (14) were kept away from to baffle (34), sealed sliding connection of inner wall of spout (24) has scraper blade (25), fixedly connected with first elastic rope (29) between the bottom surface of scraper blade (25) and the inner wall of spout (24), the inner wall fixedly connected with connecting plate (26) of storage box (14), the top surface fixedly connected with hollow elastomeric block (27) of connecting plate (26), the intercommunication has connecting pipe (28) in elastomeric block (27), the other end of connecting pipe (28) passes the round hole and spout (24) intercommunication.
6. The fan impeller dynamic balance pre-correction device according to claim 5, wherein: the inner wall top surface sliding connection of storage box (14) has sealed piece (18) to discharge gate (15) bottom, the bottom surface of sealed piece (18) is the inclined plane form, the first magnetic path (19) of inclined plane fixedly connected with of sealed piece (18), the top surface fixedly connected with of push pedal (17) and the second magnetic path (21) that first magnetic path (19) repel, first magnetic path (19) and second magnetic path (21) dislocation set, fixedly connected with spring (20) between one side that round hole was kept away from to push pedal (17) and the inner wall of storage box (14).
7. The fan impeller dynamic balance pre-correction device according to claim 6, wherein: the inner wall of feed inlet (30) is connected with sealing plate (31) sealed it through the torsional spring rotation, one side that discharge gate (15) is close to scraper blade (25) fixedly connected with rectangle piece (33), one side fixedly connected with connecting wire (32) that sealing plate (31) and scraper blade (25) are close to each other, inside connecting wire (32) passed rectangle piece (33).
8. The fan impeller dynamic balance pre-correction device according to claim 7, wherein: one side sliding connection that connecting pipe (28) was kept away from to deflector (23) has clearance piece (35) that metal material made, the top surface of clearance piece (35) is the inclined plane form, cavity (36) have been seted up in deflector (23), connecting groove (37) with cavity (36) and spout (24) intercommunication have been seted up in deflector (23), sealed sliding connection has magnetic plate (39) with clearance piece (35) magnetism inhale in cavity (36), air outlet groove (22) have been seted up to one side of deflector (23), the one end and cavity (36) intercommunication of air outlet groove (22), fixedly connected with second elastic cord (38) between the top surface of magnetic plate (39) and cavity (36) inner wall.
9. The fan impeller dynamic balance pre-correction device according to claim 8, wherein: the cleaning block (35) is internally of a hollow structure, a group of first spheres (40) made of magnetic materials are arranged in the cleaning block (35), a group of second spheres (42) which repel the first spheres (40) are fixedly connected in the scraper (25), and the cleaning block (35) is made of elastic materials.
10. A method for correcting the front dynamic balance of a fan impeller, which adopts the device for correcting the front dynamic balance of the fan impeller according to claim 9, and is characterized in that: the method comprises the following steps:
s1: the front correction table for dynamic balance of the turbine impeller is formed by assembling a hub positioning shaft sleeve (1), a positioning mandrel (2), a hub tray (3), a turntable limiting sleeve (6), a turntable (7), a bearing box group (10), a turntable seat (9) and a chassis (11);
s2: selecting a hub tray (3) and a hub positioning shaft sleeve (1) with proper sizes according to the inner holes of the impeller hubs, then installing the hub tray and the hub positioning shaft sleeve on a positioning mandrel (2), and then sleeving the inner holes of the impeller hubs on the hub positioning shaft; then the impeller is rotated, at the moment, the rotating disc (7) can flexibly rotate through the double-row cylindrical roller bearing (8), and meanwhile, the bearing box group (10) supports the bottom of the rotating disc (7) through the rolling shaft (105), so that the rotating disc (7) can stably and easily rotate;
s3: and then the impeller is rotated, and at the moment, the rotating disc (7) can flexibly rotate through the double-row cylindrical roller bearing (8) so as to finish the correction of radial runout at the inlet of the front disc of the impeller and the end face runout at the outlets of the front disc and the rear disc.
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| CN202311121238.5A CN117346952B (en) | 2023-08-30 | 2023-08-30 | Device and method for correcting dynamic balance of fan impeller |
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| CN202311121238.5A CN117346952B (en) | 2023-08-30 | 2023-08-30 | Device and method for correcting dynamic balance of fan impeller |
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| CN203401045U (en) * | 2013-07-03 | 2014-01-22 | 大连市旅顺增压器厂 | Fan impeller casting die |
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| CN214221599U (en) * | 2020-12-04 | 2021-09-17 | 湖北三峰透平装备股份有限公司 | Impeller structure device of dust removal booster fan for electric furnace steelmaking |
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| CN217152393U (en) * | 2022-03-28 | 2022-08-09 | 湖北三峰透平装备股份有限公司 | Axial force balancing and sealing device of high-speed direct-connection fan |
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2023
- 2023-08-30 CN CN202311121238.5A patent/CN117346952B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203401045U (en) * | 2013-07-03 | 2014-01-22 | 大连市旅顺增压器厂 | Fan impeller casting die |
| CN204003520U (en) * | 2014-05-30 | 2014-12-10 | 东莞市佛尔盛机电科技有限公司 | A kind of improved belt type gas ring vacuum pump |
| CN214221599U (en) * | 2020-12-04 | 2021-09-17 | 湖北三峰透平装备股份有限公司 | Impeller structure device of dust removal booster fan for electric furnace steelmaking |
| CN217155703U (en) * | 2022-03-28 | 2022-08-09 | 湖北三峰透平装备股份有限公司 | Anticorrosive wear-resisting impeller dynamic balance adjusting device |
| CN217152393U (en) * | 2022-03-28 | 2022-08-09 | 湖北三峰透平装备股份有限公司 | Axial force balancing and sealing device of high-speed direct-connection fan |
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