Industrial axial flow fan

Abstract

The industrial axial flow fan comprises a rotating disc, an air duct and a mounting cylinder, one end of the rotating disc is fixedly connected with a first motor, the power end of the first motor penetrates through the rotating disc to be fixedly connected with a first threaded rod, and the tail of the first threaded rod is rotationally connected with the inner wall of the rotating disc; the outer side of the first threaded rod is in threaded connection with a moving disc, the outer side of the moving disc is fixedly connected with a plurality of racks, one sides of the racks are in meshed connection with first gears, one ends of the first gears are fixedly connected with rotating rods, the rotating rods are rotationally connected into the rotating disc, and the other ends of the rotating rods are fixedly connected with moving boxes. A moving block is slidably connected into the moving box, outer fan blades are fixedly connected to one side of the moving block, inner fan blades are slidably connected into one sides of the outer fan blades, different air speed and air volume requirements can be met without replacing the fan blades, scene limitation of a traditional fan with fixed parameters is avoided, and the equipment input cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial ventilation equipment, in particular to an industrial axial flow fan. BACKGROUND

[0002] As the core ventilation equipment in the industrial field, the performance of the axial flow fan directly determines the ventilation efficiency and the operation stability. The existing industrial axial flow fan has the following technical defects, which restricts the flexibility of use and the convenience of maintenance:

[0003] The fan blade parameters are not adjustable and have poor adaptability: the angle and chord length of the traditional fan blade are fixed in design, and only a single air volume and air speed can be output. When facing different ventilation needs (such as strong ventilation in summer and weak ventilation in winter), different specifications of fans need to be replaced, and the equipment investment cost is high. The fixed parameters cannot adapt to complex working conditions (such as the need for targeted strong ventilation in local high-pollution areas), and the ventilation efficiency decays quickly. Cleaning and maintenance are complicated and need to be operated after shutdown: the fan blade and filter screen are easy to accumulate dust and oil stains, and traditional cleaning needs to be manually disassembled and cleaned after shutdown, which takes a long time for single maintenance and affects the continuity of industrial production. Moreover, the cleaning process is easy to damage the fan blade or filter screen, increasing the maintenance cost.

[0004] The above defects result in high use cost and heavy maintenance burden of the traditional axial flow fan, and there is an urgent need for an industrial axial flow fan with "adjustable adaptation and automatic cleaning". SUMMARY

[0005] The purpose of the present application is to provide an industrial axial flow fan to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an industrial axial flow fan, comprising a rotating disc, an air passage and a mounting cylinder, one end of the rotating disc is fixedly connected with a first motor, the power end of the first motor penetrates the rotating disc and is fixedly connected with a first threaded rod, the tail of the first threaded rod is rotatably connected with the inner wall of the rotating disc, the outer side of the first threaded rod is threadedly connected with a moving disc, a plurality of groups of first guide rods are fixedly connected inside the rotating disc, the outer side of the first guide rods is slidably connected with a first lug, the first lug is fixedly connected with the moving disc, a plurality of groups of racks are fixedly connected to the outer side of the moving disc, the one side of the racks is meshingly connected with a first gear, the one end of the first gear is fixedly connected with a rotating rod, the rotating rod is rotatably connected inside the rotating disc, the other end of the rotating rod is fixedly connected with a moving box, the moving box is slidably connected with a moving block inside, the one side of the moving block is fixedly connected with an outer fan blade, the one side inside the outer fan blade is slidably connected with an inner fan blade, the other side of the rotating disc is fixedly connected with a fifth motor, the lower part of the fifth motor is fixedly connected with two groups of fixing frames, and the fixing frames are fixedly connected inside the air passage.

[0007] Preferably, one side of the outer fan blade is fixedly connected with an isolation plate, a second motor is fixedly connected to the lower side of the isolation plate, the power end of the second motor is fixedly connected with a second threaded rod penetrating through the isolation plate, the other end of the second threaded rod is rotatably connected with the inner wall of the outer fan blade, and a second lug is threadedly connected to the outer side of the second threaded rod.

[0008] Preferably, one side of the inner fan blade is fixedly connected with an isolation plate, a second motor is fixedly connected to the lower side of the isolation plate, the power end of the second motor is fixedly connected with a second threaded rod penetrating through the isolation plate, the other end of the second threaded rod is rotatably connected with the inner wall of the outer fan blade, and a second lug is threadedly connected to the outer side of the second threaded rod.

[0009] Preferably, one side of the inner fan blade is fixedly connected with an isolation plate, a second motor is fixedly connected to the lower side of the isolation plate, the power end of the second motor is fixedly connected with a second threaded rod penetrating through the isolation plate, the other end of the second threaded rod is rotatably connected with the inner wall of the outer fan blade, and a second lug is threadedly connected to the outer side of the second threaded rod.

[0010] Preferably, one side of the inner fan blade is fixedly connected with an isolation plate, a second motor is fixedly connected to the lower side of the isolation plate, the power end of the second motor is fixedly connected with a second threaded rod penetrating through the isolation plate, the other end of the second threaded rod is rotatably connected with the inner wall of the outer fan blade, and a second lug is threadedly connected to the outer side of the second threaded rod.

[0011] Preferably, one side of the inner fan blade is fixedly connected with an isolation plate, a second motor is fixedly connected to the lower side of the isolation plate, the power end of the second motor is fixedly connected with a second threaded rod penetrating through the isolation plate, the other end of the second threaded rod is rotatably connected with the inner wall of the outer fan blade, and a second lug is threadedly connected to the outer side of the second threaded rod.

[0012] Preferably, the upper side of the installation groove is provided with a positioning groove, the air passage is slidably connected with a shielding plate opposite to the positioning groove, the lower part of the air passage is provided with a moving groove, the other end of the shielding plate extends to the lower part of the moving groove and is fixedly connected with two groups of fifth lugs, the fifth lugs are threadedly connected with fifth threaded rods inside one side, the two ends of the fifth threaded rods are rotatably connected inside the moving groove, the other side of the moving groove is fixedly connected with a third guide rod, the third guide rod is slidably connected inside the other fifth lug, the lower part of the air passage is respectively provided with a first control groove and a second control groove, one end of the fifth threaded rod penetrates into the first control groove and is fixedly connected with a first bevel gear, one side of the first bevel gear is meshingly connected with a second bevel gear, the other end of the second bevel gear is rotatably connected to the inner wall of the second control groove, the tail of the second bevel gear is sleeved with a transmission belt outside the first water pipe, and the transmission belt is arranged inside the second control groove.

[0013] Preferably, the air passage is fixedly connected with a filter screen inside the two sides, the front side of the air passage is provided with a communication groove, the air passage is provided with a rotating groove communicated with the communication groove, the communication groove is rotatably connected with a rotating ring, the upper part of the rotating ring is fixedly connected with a gear ring, the gear ring is rotatably connected inside the rotating groove, the upper part of the air passage is provided with a communication hole communicated with the rotating groove, the communication hole is rotatably connected with a second gear, the second gear is meshingly connected to the upper part of the gear ring, the upper part of the air passage is fixedly connected with a mounting frame, one side of the mounting frame is fixedly connected with a seventh motor, the power end of the seventh motor is fixedly connected with the second gear, the rotating rings are fixedly connected with a connecting plate, the connecting plate is slidably connected with two groups of sliding rods inside, one end of the sliding rod is fixedly connected with a rubber scraper, the other end of the sliding rod is fixedly connected with a fixed sheet, the fixed sheet and the connecting plate are fixedly connected with a second spring outside the sliding rod.

[0014] Preferably, the front side of the air passage is provided with a water storage ring, one side of the main pipe is fixedly connected with a second water pipe, the other end of the second water pipe penetrates into the water storage ring, the outer side of the main pipe is fixedly connected with a solenoid valve, the solenoid valve is arranged between the first water pipe and the second water pipe, the upper part of the water storage ring is provided with a plurality of overflow openings, the lower part of the overflow opening is opposite to the front side of the filter screen, the inner side of the overflow opening is slidably connected with a plug, the upper part of the plug is fixedly connected with a lifting rod, the upper part of the lifting rod is fixedly connected with sixth lugs on both sides, the inner side of the sixth lug is slidably connected with a fourth guide rod, the two ends of the fourth guide rod are fixedly connected inside the water storage ring, the first spring is fixedly connected between the sixth lug and the inner wall of the water storage ring outside the fourth guide rod.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The application adjusts the angle of the fan blade by moving the rack driven by the first motor, thereby achieving the adjustment of the angle of the fan blade through the gear transmission, and the second motor drives the inner fan blade to stretch and retract to change the chord length, without the need to replace the fan blade to adapt to different wind speed and air volume requirements, avoiding the scene limitation of traditional fixed parameter fan, and reducing the equipment investment cost;

[0017] 2. The application also adjusts the position of the moving block by the third motor synchronously driven when adjusting the chord length of the fan blade, ensures that the center of gravity always coincides with the axis of the rotating rod, eliminates the eccentric vibration when rotating at high speed, reduces the noise, and prolongs the service life of the core components such as motor and bearing;

[0018] 3. The application also locks the inner fan blade and the moving block by the fourth motor driving the up and down locking rods respectively, forming double protection of "chord length locking and position locking", avoiding the loosening of the threaded rod caused by long-term high-speed operation or air flow impact, preventing the fan blade from deviating or falling off, and ensuring the operation safety in industrial scenes;

[0019] 4. The application also drives the first water pipe to rotate reciprocally by the sixth motor when cleaning the fan blade, the spray head is washed omnidirectionally, and the linkage shielding plate is automatically opened, so that the cleaning does not hinder the air flow; the filter screen is cleaned by rotating and scraping off the rubber scraper and cooperating with the overflow washing, without manual disassembly, reducing the downtime maintenance time, and improving the continuity of industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the application;

[0021] Figure 2 is a sectional view of the three-dimensional structure of the application;

[0022] Figure 3 is a sectional view of the three-dimensional structure of the application;

[0023] Figure 4 is a sectional view of the three-dimensional structure of the application;

[0024] Figure 5 is a sectional view of the three-dimensional structure of the application

[0025] Figure 6 is an enlarged view of the structure at A of the application;

[0026] Figure 7 is an enlarged view of the structure at B of the application;

[0027] Figure 8 is an enlarged view of the structure at C of the application;

[0028] Figure 9 is an enlarged view of the structure at D of the application;

[0029] Figure 10 is a schematic diagram of the fan blade structure of the application;

[0030] Figure 11 A sectional view of the fan structure of the present application;

[0031] Figure 12 A sectional view of the fan structure of the present application;

[0032] Figure 13 A sectional view of the fan structure of the present application.

[0033] In the figure: 1, rotating disc; 2, first motor; 3, first threaded rod; 4, moving disc; 5, first lug; 6, first guide rod; 7, rack; 8, first gear; 9, rotating rod; 10, moving box; 11, moving block; 12, outer fan blade; 13, inner fan blade; 14, isolation plate; 15, second lug; 16, second threaded rod; 17, second motor; 18, isolation frame; 19, third motor; 20, third threaded rod; 21, third lug; 22, extension box; 23, fourth motor; 24, fourth threaded rod; 25, second guide rod; 26, special-shaped plate; 27, lower locking rod; 28, upper locking rod; 29, position hole; 30, locking hole; 31, mounting cylinder; 32, positioning ring; 33, air outlet hole; 34, mounting sheet; 35, filter cover; 36, follower block; 37, follower groove; 38, fixing frame; 39, fifth motor; 40, air passage; 41, mounting groove; 42, first water pipe; 43, spray head; 44, shielding plate; 45, positioning groove; 46, moving groove; 47, fifth lug; 48, fifth threaded rod; 49, third guide rod; 50, first control groove; 51, first bevel gear; 52, second bevel gear; 53, second control groove; 54, transmission belt; 55, water tank; 56, sixth motor; 57, water pump; 58, main pipe; 59, inner connecting pipe; 60, electromagnetic valve; 61, second water pipe; 62, water storage ring; 63, overflow opening; 64, plug; 65, lifting rod; 66, sixth lug; 67, fourth guide rod; 68, first spring; 69, filter screen; 70, communication groove; 71, rotating groove; 72, rotating ring; 73, tooth ring; 74, communication hole; 75, second gear; 76, mounting frame; 77, seventh motor; 78, connecting plate; 79, sliding rod; 80, rubber scraper; 81, fixing sheet; 82, second spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] Please refer to Figures 1-13This invention provides a technical solution: an industrial axial flow fan, comprising a rotating disk 1, an air duct 40, and a mounting cylinder 31. One end of the rotating disk 1 is fixedly connected to a first motor 2 via flange bolts. The power end of the first motor 2 penetrates the rotating disk 1 and is fixedly connected to a first threaded rod 3 via a key connection. The tail end of the first threaded rod 3 is rotatably connected to the inner wall of the rotating disk 1 via a deep groove ball bearing. A movable disk 4 is threadedly connected to the outer side of the first threaded rod 3. A first guide rod 6 is welded inside the rotating disk 1. A first lug 5 is slidably connected to the outer side of the first guide rod 6. The first lug 5 is fixedly welded to the movable disk 4, restricting the rotation of the movable disk 4. Several sets of racks 7 are fixedly connected to the outer side of the movable disk 4 via welding. A first gear 8 is connected to the side meshing. One end of the first gear 8 is fixedly connected to a rotating rod 9 via a key. The rotating rod 9 is rotatably connected to the inside of the rotating disk 1 via a deep groove ball bearing. The other end of the rotating rod 9 is fixedly connected to a movable box 10 via welding. A movable block 11 is slidably connected inside the movable box 10. An outer fan blade 12 is fixedly connected to one side of the movable block 11 via welding. An inner fan blade 13 is slidably connected to one side of the outer fan blade 12. The total chord length of the fan blade changes when it extends or retracts. A fifth motor 39 is fixedly connected to the other side of the rotating disk 1 via bolts. Two sets of fixed frames 38 are fixedly connected to the lower part of the fifth motor 39 via welding. The fixed frames 38 are fixedly connected to the inside of the ventilation duct 40 via bolts to provide support for the rotating disk 1.

[0036] An isolation plate 14 is fixedly connected to one side of the outer fan blade 12 by welding. A second motor 17 is fixedly connected to the lower side of the isolation plate 14 by flange bolts. After the power end of the second motor 17 penetrates the isolation plate 14, a second threaded rod 16 is fixedly connected by a key. The other end of the second threaded rod 16 is rotatably connected to the inner wall of the outer fan blade 12 by a deep groove ball bearing. A second lug 15 is threadedly connected to the outer side of the second threaded rod 16. The second lug 15 is fixedly connected to the lower side of the inner fan blade 13 by welding.

[0037] An isolation frame 18 is fixedly connected to one side of the interior of the movable box 10 by welding. A third motor 19 is fixedly connected to the interior of the isolation frame 18 by bolts. The power end of the third motor 19 penetrates the isolation frame 18 and is fixedly connected to a third threaded rod 20 by a key. The other end of the third threaded rod 20 is rotatably connected to the inner wall of the movable box 10 by a deep groove ball bearing. Two sets of third lugs 21 are threadedly connected to the outer side of the third threaded rod 20. The third lugs 21 are fixedly connected to the lower two sides of the movable block 11 by welding. The third motor 19 drives the third threaded rod 20, causing the movable block 11 to slide along the movable box 10, ensuring that the center of gravity always coincides with the axis of the rotating rod 9 when the chord length of the fan blade changes, thus avoiding vibration.

[0038] An extension box 22 is fixedly connected to one side of the movable box 10 by welding. A fourth motor 23 is fixedly connected to the inside of the isolation frame 18 by bolts. The power end of the fourth motor 23 penetrates into the extension box 22 and is fixedly connected to a fourth threaded rod 24 by a key. The other end of the fourth threaded rod 24 is rotatably connected to the inner wall of the extension box 22 by a deep groove ball bearing. A shaped plate 26 is threadedly connected to the outer side of the fourth threaded rod 24. A second guide rod 25 is slidably connected to the other side of the lower end of the shaped plate 26. The two ends of the second guide rod 25 are fixedly connected to the inner wall of the extension box 22 by welding, restricting the rotation of the shaped plate 26. The upper part of the shaped plate 26... Several sets of upper locking rods 28 are fixedly connected by welding, and the upper locking rods 28 are slidably connected to the inside of the extension box 22 and the side wall of the outer fan blade 12. A position hole 29 that matches the upper locking rod 28 is opened on one side of the inner fan blade 13. A lower locking rod 27 is fixedly connected to the lower side of the irregular plate 26 by welding, and the lower locking rod 27 is slidably connected to the inside of the side wall of the extension box 22 and the moving box 10. A locking hole 30 that matches the lower locking rod 27 is opened on one side of the moving block 11. The fourth motor 23 drives the irregular plate 26, causing the upper locking rod 28 and the lower locking rod 27 to be inserted into the corresponding holes, so as to achieve dual locking of the fan blade chord length and position.

[0039] A positioning ring 32 is fixedly connected to one side of the mounting cylinder 31 by welding. Several sets of air outlets 33 are opened on the side wall of the mounting cylinder 31 for heat dissipation. A filter cover 35 is fitted inside the mounting cylinder 31 to intercept dust. Several sets of follower blocks 36 are fixedly connected to the outer side of one end of the filter cover 35 by welding. Follower grooves 37 that cooperate with the follower blocks 36 are opened inside the mounting cylinder 31 to facilitate the installation and removal of the filter cover 35. Several sets of mounting plates 34 are fixedly connected to the end of the mounting cylinder 31 away from the positioning ring 32 by welding. The mounting cylinder 31 is fixedly connected to the rotating disk 1 by bolts of the mounting plates 34. The mounting cylinder 31 is fitted on the outside of the first motor 2 to achieve protection and heat dissipation.

[0040] An arc-shaped mounting groove 41 is provided on one side of the lower part of the ventilation duct 40. The first water pipe 42 is rotatably connected to the inside of the mounting groove 41 through a rolling bearing. Several sets of nozzles 43 are fixedly connected to one side of the first water pipe 42 by welding. Fan-shaped nozzles 43 are selected for good atomization effect. A water tank 55 is fixedly connected to the lower part of the ventilation duct 40 by bolts. Both ends of the first water pipe 42 extend into the inside of the water tank 55. A sixth motor 56 is fixedly connected to one side of the water tank 55 by flange bolts. The power end of the sixth motor 56 is fixedly connected to the first water pipe 42 by a coupling, driving the first water pipe 42 to reciprocate. An inner connecting pipe 59 is sleeved inside the other end of the first water pipe 42. The other end of the inner connecting pipe 59 is fixedly connected to a main pipe 58 by welding. One end of the main pipe 58 is fixedly connected to the inner wall of the water tank 55 by welding. The other end of the main pipe 58 is fixedly connected to a water pump 57 by flange bolts. The water pump 57 is fixedly connected to the lower side of the water tank 55 by bolts to supply water to the nozzles 43.

[0041] A positioning groove 45 is provided on one side of the upper part of the mounting groove 41. A baffle plate 44 is slidably connected inside the air passage 40, facing the positioning groove 45. When the baffle plate 44 is closed, it fits against the inner wall of the air passage 40 to ensure smooth airflow. A movable groove 46 is provided at the lower part of the air passage 40. The other end of the baffle plate 44 extends to the movable groove 46. Two sets of fifth lugs 47 are fixedly connected to the lower part by welding. A fifth threaded rod 48 is threadedly connected inside one fifth lug 47. The two ends of the fifth threaded rod 48 are rotatably connected to the inside of the movable groove 46 by deep groove ball bearings. A third guide rod 49 is fixedly connected to the other side of the movable groove 46 by welding. The third guide rod 49 is slidably connected to the inside of the fifth lug 47 on the other side. The lower part of the air passage 40 The system has a first control slot 50 and a second control slot 53. One end of the fifth threaded rod 48 penetrates into the first control slot 50 and is fixedly connected to the first bevel gear 51 by a key. The first bevel gear 51 is meshed with a second bevel gear 52 on one side. The other end of the second bevel gear 52 is rotatably connected to the inner wall of the second control slot 53 by a deep groove ball bearing. A transmission belt 54 is sleeved on the tail of the second bevel gear 52 and the outside of the first water pipe 42. The transmission belt 54 is located inside the second control slot 53. When the first water pipe 42 rotates, the transmission belt 54 drives the bevel gear to rotate, which in turn drives the fifth threaded rod 48, causing the baffle plate 44 to slide open along the positioning slot 45. This ensures that the airflow is not obstructed during cleaning and that the airflow is smooth when closed.

[0042] A filter screen 69 is bolted to both sides of the ventilation duct 40. A connecting groove 70 is provided on the inner front side of the ventilation duct 40. A rotating groove 71 communicating with the connecting groove 70 is provided inside the ventilation duct 40. A rotating ring 72 is rotatably connected to the connecting groove 70 through a rolling bearing. A gear ring 73 is fixedly connected to the upper part of the rotating ring 72 by welding. The gear ring 73 is rotatably connected to the inside of the rotating groove 71. A connecting hole 74 communicating with the rotating groove 71 is provided at the upper part of the ventilation duct 40. A second gear 75 is rotatably connected to the connecting hole 74 through a deep groove ball bearing. The second gear 75 is meshed with the upper part of the gear ring 73. The upper part of the ventilation duct 40 is bolted to... A mounting bracket 76 is connected to the filter 69. A seventh motor 77 is fixedly connected to one side of the mounting bracket 76 by flange bolts. The power end of the seventh motor 77 is fixedly connected to the second gear 75 by a coupling. A connecting plate 78 is fixedly connected between the rotating rings 72 by welding. Two sets of sliding rods 79 are slidably connected inside the connecting plate 78. A rubber scraper 80 is fixedly connected to one end of the sliding rod 79 by vulcanization. A fixing plate 81 is fixedly connected to the other end of the sliding rod 79 by welding. A second spring 82 is fixedly connected to the connecting plate 78 by spot welding. The second spring 82 is sleeved on the outside of the sliding rod 79 to ensure that the rubber scraper 80 fits tightly against the filter screen 69.

[0043] A water storage ring 62 is provided inside the front side of the vent 40. A second water pipe 61 is fixedly connected to one side of the main pipe 58 by welding. The other end of the second water pipe 61 penetrates into the water storage ring 62. A solenoid valve 60 is fixedly connected to the outside of the main pipe 58 by flange bolts. The solenoid valve 60 is located between the first water pipe 42 and the second water pipe 61 to control the water flow direction. Several sets of overflow ports 63 are provided on the upper part of the water storage ring 62. The lower part of the overflow port 63 faces the front side of the filter screen 69. A plug 64 is slidably connected inside the overflow port 63. A lifting rod 65 is fixedly connected to the upper part of the plug 64 by welding. The sixth lug 66 is fixedly connected to both sides of the part by welding. The fourth guide rod 67 is slidably connected inside the sixth lug 66. The two ends of the fourth guide rod 67 are fixedly connected to the inside of the water storage ring 62 by welding. The first spring 68 is fixedly connected between the sixth lug 66 and the inner wall of the water storage ring 62 by spot welding. The first spring 68 is sleeved on the outside of the fourth guide rod 67. When the water pressure is greater than the elastic force of the first spring 68, the plug 64 descends, the overflow port 63 opens, and the water flows to flush the filter screen 69 to assist in cleaning. When the water pressure decreases, the first spring 68 returns to its original position and closes the overflow port 63 to prevent air from entering from the overflow port 63.

[0044] Working principle: When in use, the first motor 2 is started, and the power end drives the first threaded rod 3 to rotate; the moving disk 4 moves along the axis of the first threaded rod 3 under the restriction of the first guide rod 6, driving the outer rack 7 to move synchronously; the rack 7 meshes with the first gear 8, driving the first gear 8 and the rotating rod 9 to rotate; the rotating rod 9 drives the moving box 10, the outer fan blade 12 and the inner fan blade 13 to rotate around the axis of the rotating rod 9, adjusting the fan blade angle. After the angle is adapted, the first motor 2 is turned off, and the fan blade angle is fixed.

[0045] Start the second motor 17, which drives the second threaded rod 16 to rotate; the second lug 15 drives the inner fan blade 13 to slide along the inside of the outer fan blade 12, lengthening or shortening the total chord length of the fan blade; simultaneously start the third motor 19, which drives the third threaded rod 20 to rotate; the third lug 21 drives the moving block 11 to slide along the moving box 10, adjusting the center of gravity of the fan blade to ensure that the center of gravity coincides with the axis of the rotating rod 9, thus avoiding vibration; after the chord length is adapted, turn off the second motor 17 and the third motor 19;

[0046] The fourth motor 23 is started, and the power end drives the fourth threaded rod 24 to rotate; the irregular plate 26 moves axially along the fourth threaded rod 24 under the restriction of the second guide rod 25; the irregular plate 26 drives the upper locking rod 28 to insert into the position hole 29 of the inner fan blade 13, and at the same time drives the lower locking rod 27 to insert into the locking hole 30 of the moving block 11; after locking is completed, the fourth motor 23 is turned off to prevent the second threaded rod 16 and the third threaded rod 20 from loosening and causing the fan blade to deviate;

[0047] Start water pump 57 and sixth motor 56; water pump 57 delivers water from water tank 55 to first water pipe 42 through main pipe 58 and inner connecting pipe 59, and sprays it onto the fan blade surface after atomization by nozzle 43; sixth motor 56 drives first water pipe 42 to rotate back and forth, and nozzle 43 covers all areas of the lower fan blades to wash away dust; at the same time, first water pipe 42 drives second bevel gear 52 to rotate through transmission belt 54; second bevel gear 52 meshes with first bevel gear 51, driving fifth threaded rod 48 to rotate; baffle plate 44 slides open along moving groove 46 under the restriction of third guide rod 49 to avoid blocking the cleaning water flow; after cleaning is completed, turn off water pump 57 and sixth motor 56; first water pipe 42 stops rotating, baffle plate 44 resets and closes under the action of bevel gear transmission, adhering to the inner wall of ventilation duct 40 to ensure smooth airflow;

[0048] The seventh motor 77 and solenoid valve 60 are activated; the seventh motor 77 drives the second gear 75 to rotate, meshing with the gear ring 73 and causing the rotating ring 72 to rotate; the rotating ring 72 causes the connecting plate 78 and the rubber scraper 80 to rotate around the axis of the vent 40; the second spring 82 pushes the rubber scraper 80 to tightly adhere to the filter screen 69, scraping off surface dust; the solenoid valve 60 switches the water flow to the second water pipe 61, and the water flows into the water storage ring 62; when the water pressure is greater than the elastic force of the first spring 68, the plug 64 descends, the overflow port 63 opens, and the water flows to rinse the filter screen 69, assisting in cleaning; after cleaning is completed, the seventh motor 77 and solenoid valve 60 are turned off; the water pressure decreases, the first spring 68 resets, and pushes the plug 64 to close the overflow port 63.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0050] Although embodiments of the 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial axial flow fan, comprising a rotating disc (1), an air duct (40), and a mounting cylinder (31), characterized in that: One end of the rotating disk (1) is fixedly connected to a first motor (2). The power end of the first motor (2) penetrates the rotating disk (1) and is fixedly connected to a first threaded rod (3). The tail of the first threaded rod (3) is rotatably connected to the inner wall of the rotating disk (1). A movable disk (4) is threadedly connected to the outer side of the first threaded rod (3). Several sets of first guide rods (6) are fixedly connected inside the rotating disk (1). A first lug (5) is slidably connected to the outer side of the first guide rod (6). The first lug (5) is fixedly connected to the movable disk (4). Several sets of racks (7) are fixedly connected to the outer side of the movable disk (4). A first gear is meshed on one side of the rack (7). (8) One end of the first gear (8) is fixedly connected to a rotating rod (9), which is rotatably connected to the inside of the rotating disk (1). The other end of the rotating rod (9) is fixedly connected to a movable box (10), which is slidably connected to a movable block (11) inside the movable box (10). An outer fan blade (12) is fixedly connected to one side of the movable block (11), and an inner fan blade (13) is slidably connected to one side of the outer fan blade (12). A fifth motor (39) is fixedly connected to the other side of the rotating disk (1), and two sets of fixed frames (38) are fixedly connected to the lower part of the fifth motor (39). The fixed frames (38) are fixedly connected to the inside of the ventilation duct (40).

2. An industrial axial flow fan according to claim 1, characterized in that: An isolation plate (14) is fixedly connected to one side of the inner side of the outer fan blade (12). A second motor (17) is fixedly connected to one side of the lower part of the isolation plate (14). The power end of the second motor (17) penetrates the isolation plate (14) and is fixedly connected to a second threaded rod (16). The other end of the second threaded rod (16) is rotatably connected to the inner wall of the outer fan blade (12). A second lug (15) is threadedly connected to the outer side of the second threaded rod (16). The second lug (15) is fixedly connected to one side of the lower part of the inner fan blade (13).

3. An industrial axial flow fan according to claim 1, characterized in that: An isolation frame (18) is fixedly connected to one side of the interior of the movable box (10). A third motor (19) is fixedly connected inside the isolation frame (18). The power end of the third motor (19) penetrates the isolation frame (18) and is fixedly connected to a third threaded rod (20). The other end of the third threaded rod (20) is rotatably connected to the inner wall of the movable box (10). Two sets of third lugs (21) are threadedly connected to the outer side of the third threaded rod (20). The third lugs (21) are fixedly connected to the lower sides of the movable block (11).

4. An industrial axial flow fan according to claim 3, characterized in that: An extension box (22) is fixedly connected to one side of the movable box (10). A fourth motor (23) is fixedly connected inside the isolation frame (18). The power end of the fourth motor (23) penetrates into the extension box (22) and is fixedly connected to a fourth threaded rod (24). The other end of the fourth threaded rod (24) is rotatably connected to the inner wall of the extension box (22). A shaped plate (26) is threadedly connected to the outer side of the fourth threaded rod (24). A second guide rod (25) is slidably connected to the other side of the lower end of the shaped plate (26). Both ends of the second guide rod (25) are fixedly connected to the extension box (22). The inner wall of the movable plate (26) is fixedly connected to a number of upper locking rods (28). The upper locking rods (28) are slidably connected to the inside of the extension box (22) and the side wall of the outer fan blade (12). The inner fan blade (13) has a number of position holes (29) that cooperate with the upper locking rods (28) on one side. The lower locking rod (27) is fixedly connected to the lower side of the movable plate (26). The lower locking rod (27) is slidably connected to the inside of the side wall of the extension box (22) and the movable box (10). The movable block (11) has a locking hole (30) that cooperates with the lower locking rod (27) on one side.

5. An industrial axial flow fan according to claim 1, characterized in that: A positioning ring (32) is fixedly connected inside one side of the mounting cylinder (31). Several sets of air outlet holes (33) are opened on the side wall of the mounting cylinder (31). A filter cover (35) is sleeved inside the mounting cylinder (31). Several sets of follower blocks (36) are fixedly connected to the outer side of one end of the filter cover (35). A follower groove (37) that matches the follower block (36) is opened inside the mounting cylinder (31). Several sets of mounting pieces (34) are fixedly connected to the end of the mounting cylinder (31) away from the positioning ring (32). The mounting cylinder (31) is fixedly connected to the rotating disk (1) through the mounting pieces (34). The mounting cylinder (31) is sleeved on the outside of the first motor (2).

6. An industrial axial flow fan according to claim 1, characterized in that: The ventilation duct (40) has an installation groove (41) on one side of its lower part. A first water pipe (42) is rotatably connected inside the installation groove (41). Several sets of nozzles (43) are fixedly connected to one side of the first water pipe (42). A water tank (55) is fixedly connected to the lower part of the ventilation duct (40). Both ends of the first water pipe (42) extend into the water tank (55). A sixth motor (56) is fixedly connected to one side of the water tank (55). The power end of the sixth motor (56) is fixedly connected to the first water pipe (42). An inner connecting pipe (59) is sleeved inside the other end of the first water pipe (42). A main pipe (58) is fixedly connected to the other end of the inner connecting pipe (59). One end of the main pipe (58) is fixedly connected to the inner wall of the water tank (55). A water pump (57) is fixedly connected to the other end of the main pipe (58). The water pump (57) is fixedly connected to the lower side of the water tank (55).

7. An industrial axial flow fan according to claim 6, characterized in that: A positioning groove (45) is provided on one side of the upper part of the mounting groove (41). A baffle plate (44) facing the positioning groove (45) is slidably connected inside the ventilation channel (40). A moving groove (46) is provided at the lower part of the ventilation channel (40). Two sets of fifth lugs (47) are fixedly connected at the lower part of the baffle plate (44) extending to the moving groove (46). A fifth threaded rod (48) is threadedly connected inside one of the fifth lugs (47). The two ends of the fifth threaded rod (48) are rotatably connected inside the moving groove (46). A third guide rod (49) is fixedly connected to the other side of the moving groove (46). The fifth threaded rod (48) is slidably connected to the fifth ear (47) on the other side. The lower part of the ventilation channel (40) is provided with a first control groove (50) and a second control groove (53). One end of the fifth threaded rod (48) penetrates into the first control groove (50) and is fixedly connected to a first bevel gear (51). One side of the first bevel gear (51) is meshed with a second bevel gear (52). The other end of the second bevel gear (50) is rotatably connected to the inner wall of the second control groove (53). The tail of the second bevel gear (50) is fitted with a transmission belt (54) on the outside of the first water pipe (42). The transmission belt (54) is set inside the second control groove (53).

8. An industrial axial flow fan according to claim 6, characterized in that: The ventilation duct (40) has filter screens (69) fixedly connected to both sides. A connecting groove (70) is provided on the inner front side of the ventilation duct (40). A rotating groove (71) communicating with the connecting groove (70) is provided inside the ventilation duct (40). A rotating ring (72) is rotatably connected inside the connecting groove (70). A toothed ring (73) is fixedly connected to the upper part of the rotating ring (72). The toothed ring (73) is rotatably connected inside the rotating groove (71). A connecting hole (74) communicating with the rotating groove (71) is provided on the upper part of the ventilation duct (40). A second gear (75) is rotatably connected inside the connecting hole (74). The second gear (75) meshes with the upper part of the toothed ring (73). A mounting bracket (76) is fixedly connected to the upper part of the ventilation duct (40). A seventh motor (77) is fixedly connected to one side of the mounting bracket (76). The power end of the seventh motor (77) is fixedly connected to the second gear (75). A connecting plate (78) is fixedly connected between the rotating rings (72). Two sets of sliding rods (79) are slidably connected inside the connecting plate (78). A rubber scraper (80) is fixedly connected to one end of the sliding rod (79). A fixing piece (81) is fixedly connected to the other end of the sliding rod (79). A second spring (82) is fixedly connected between the fixing piece (81) and the connecting plate (78). The second spring (82) is sleeved on the outside of the sliding rod (79).

9. An industrial axial flow fan according to claim 8, characterized in that: A water storage ring (62) is provided inside the front side of the ventilation duct (40). A second water pipe (61) is fixedly connected to one side of the main pipe (58). The other end of the second water pipe (61) penetrates into the water storage ring (62). A solenoid valve (60) is fixedly connected to the outside of the main pipe (58). The solenoid valve (60) is located between the first water pipe (42) and the second water pipe (61). Several overflow ports (63) are provided on the upper part of the water storage ring (62). The lower part of the overflow port (63) faces the front side of the filter screen (69). 63) An internal slidable plug (64) is connected to the plug (64) and a lifting rod (65) is fixedly connected to the upper part of the plug (64). A sixth lug (66) is fixedly connected to both sides of the upper part of the lifting rod (65). A fourth guide rod (67) is slidably connected inside the sixth lug (66). The two ends of the fourth guide rod (67) are fixedly connected to the inside of the water storage ring (62). A first spring (68) is fixedly connected between the sixth lug (66) and the inner wall of the water storage ring (62). The first spring (68) is sleeved on the outside of the fourth guide rod (67).

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