Efficient centrifugal fan impeller structure

Abstract

The invention discloses an efficient centrifugal fan impeller structure, belongs to the technical field of fans, and aims to solve the problems that blades in an existing fan are fixed, and the inclination angles of the blades cannot be adjusted according to specific working conditions. The cleaning assembly is triggered by pulling the clamping plate to conduct scraping and reciprocating cleaning on the surface of the blade, after the connecting plate moves to the tail end of the blade, the clamping plate is rotated to synchronously drive the multiple sets of blade bodies to rotate through meshing of the first gear and the second gear, extra disassembly or replacement of parts is not needed, working condition switching time is greatly shortened, and the working efficiency is improved. Seamless switching between the cleaning function and blade angle adjustment is achieved, the operation efficiency is improved, operation can be achieved through mechanical linkage and manual pulling and rotating of a clamping plate in the cleaning and adjusting process, a complex electric control system or a hydraulic device is not needed, workers can complete cleaning and blade body angle adjustment only through simple operation, and the operation threshold is low.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and more specifically, to an impeller structure of an efficient centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal, and cooling of factories, mines, tunnels, cooling towers, vehicles, ships, and buildings. The impeller is a key component in a centrifugal fan. The performance of a centrifugal fan depends to a great extent on the structure of the impeller.

[0003] In the prior art, the blades in the fan are all fixed and cannot adjust the inclination angle of the blades according to the specific working conditions, which severely limits its performance. Fixed blades are difficult to adapt to the flow rate and pressure requirements under different working conditions. When operating under off-design conditions, problems such as airflow separation and stall are likely to occur due to unreasonable blade attack angles, resulting in a significant decrease in efficiency, accompanied by an increase in energy consumption and noise, further restricting the stability and reliability of the fan in complex scenarios, and it is difficult to meet the requirements of modern industry for efficient, energy-saving, and flexible equipment.

[0004] Therefore, in order to solve such problems, we propose an impeller structure of an efficient centrifugal fan. Summary of the Invention

[0005] The purpose of the present invention is to provide an impeller structure of an efficient centrifugal fan, aiming to solve the problem in the above background art that the blades in the fan are all fixed and cannot adjust the inclination angle of the blades according to the specific working conditions.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An impeller structure of an efficient centrifugal fan, including a box body. A first installation groove is provided on the inner side wall of the box body. A servo motor is fixedly connected to the side wall of the box body. An impeller assembly is arranged inside the box body. An air outlet assembly is arranged on the side wall of the box body.

[0007] The impeller assembly includes a mounting seat movably connected to the inner wall of the first installation groove. The output end of the servo motor is fixedly connected to one end of the mounting seat. A second installation groove is provided at the end of the mounting seat away from the servo motor. A telescopic rod is movably connected to the inner wall of the second installation groove. A driving component is arranged on the side wall of the telescopic rod. A moving component is arranged at the end of the telescopic rod away from the mounting seat. A fixing plate is fixedly connected to the inner wall of the mounting seat.

[0008] Preferably, the driving assembly includes a first gear fixedly connected to the side wall of the telescopic rod. Five second gears are evenly meshed and connected to the side wall of the first gear. One end of the second gear is fixedly connected to a rotating column. The end of the rotating column away from the second gear movably penetrates through the fixing plate. A blade body is fixedly connected to the side wall of the end of the rotating column away from the fixing plate. A cleaning assembly is arranged on the side wall of the blade body.

[0009] Preferably, the moving assembly includes a connecting plate movably connected to one end of the fixing plate. A placement groove is opened at the end of the connecting plate away from the fixing plate. A clamping plate is snap-fitted to the inner wall of the placement groove. A plurality of first threaded grooves are evenly opened on the bottom wall of the placement groove. The connecting plate is movably connected to a first mounting ring through the cleaning assembly.

[0010] Preferably, the cleaning assembly includes a cleaning plate. A blade groove is opened at one end of the cleaning plate. The blade body is slidably connected to the inner wall of the blade groove. A scraping plate is fixedly connected to the outer side wall at the port of the blade groove. A fifth mounting groove is opened on the inner wall of the blade groove. A reciprocating screw rod is movably connected inside the fifth mounting groove. Roller wheels are respectively fixedly connected to the side walls at both ends of the reciprocating screw rod. A moving block is movably connected to the side wall of the reciprocating screw rod. The moving block is slidably connected to the inner wall of the fifth mounting groove. A cleaning block is fixedly connected to one end of the moving block.

[0011] Preferably, second threaded grooves are evenly opened at the end of the fixing plate away from the first gear. Two third threaded grooves are opened on the side wall of the clamping plate. A threaded column is threadedly connected to the inner wall of the third threaded groove. The threaded column is threadedly connected to the first threaded groove and the second threaded groove. A plurality of clamping columns are evenly fixedly connected to one end of the clamping plate. The clamping columns penetrate through the first threaded groove and are snap-fitted to the second threaded groove.

[0012] Preferably, the air outlet assembly includes a through groove opened on the side wall of the box body. A third mounting groove is opened on the inner top wall of the through groove. A fourth mounting groove is opened on the inner side wall of the through groove. A baffle is slidably connected to the inner wall of the third mounting groove. A spring is fixedly connected to the inner wall of the fourth mounting groove. A clamping block is fixedly connected to one end of the spring.

[0013] Preferably, a limiting groove is opened on the inner wall of the first mounting groove. A limiting ring is fixedly connected to the side wall of the mounting seat. The limiting ring is slidably connected to the inner wall of the limiting groove.

[0014] Preferably, the end of the rotating column away from the first gear is movably connected to a second mounting ring. Four fixing columns are evenly fixedly connected to the outer side wall of the second mounting ring. The end of the fixing column away from the second mounting ring is fixedly connected to the inner wall of the box body.

[0015] Preferably, an inclined surface is arranged on the side wall of the scraping plate. The moving block is in an L shape. The bristles on the side wall of the cleaning block abut against the inclined surface of the scraping plate.

[0016] Preferably, a partition net is provided on the inner wall at the port of the box body. The central point of the clamping plate is collinear with the connection line of the two third threaded grooves. The nominal diameter of the clamping column is smaller than the nominal diameters of the first threaded groove and the second threaded groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, by pulling the clamping plate, the cleaning component is triggered to scrape and reciprocally clean the surface of the blade. When the connecting plate moves to the end of the blade, rotating the clamping plate can synchronously drive multiple groups of blade bodies to rotate through the meshing of the first gear and the second gear, without the need to disassemble or replace components additionally, greatly reducing the time-consuming for working condition switching, realizing seamless switching between the cleaning function and the blade angle adjustment, improving the operation efficiency. Secondly, through mechanical linkage, the cleaning and adjustment processes can be realized by manually pulling and rotating the clamping plate respectively, without the need for a complex electric control system or a hydraulic device. Workers only need to perform simple operations to complete the cleaning and the angle adjustment of the blade body, and the operation threshold is low.

[0019] 2. In the present invention, by rotating the threaded column, the threaded connection with the connecting plate and the fixing plate can be quickly released or established, realizing quick disassembly, assembly and locking, improving the operation convenience. Secondly, the threaded connection and the clamping of the clamping column form a mechanical double locking. The threaded column provides an axial pre-tightening force to prevent the axial movement of the connecting plate, and the clamping column restricts the rotation of the connecting plate through radial clamping, avoiding the deviation of the blade angle after adjustment due to factors such as vibration, and ensuring the reliability of the fan operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic of the present invention Figure I ;

[0021] Figure 2 is a three-dimensional schematic of the present invention Figure II ;

[0022] Figure 3 is a three-dimensional schematic diagram of the box body in the present invention;

[0023] Figure 4 is a three-dimensional exploded schematic diagram of the air outlet component in the present invention;

[0024] Figure 5 is a three-dimensional exploded schematic diagram of the internal structure of the box body in the present invention;

[0025] Figure 6 is a three-dimensional exploded schematic diagram of the driving component in the present invention;

[0026] Figure 7 is a three-dimensional exploded schematic diagram of the moving component in the present invention;

[0027] Figure 8Schematic three - dimensional view of the clamping plate in the present invention;

[0028] Figure 9 Schematic three - dimensional exploded view of the cleaning component in the present invention;

[0029] Figure 10 Schematic three - dimensional exploded view of the telescopic rod in the present invention.

[0030] Legend:

[0031] 1. Box body; 101. First installation groove; 102. Limit groove; 11. Servo motor; 2. Impeller assembly; 21. Mounting seat; 201. Second installation groove; 202. Limit ring; 203. Telescopic rod; 22. Driving component; 221. First gear; 222. Second gear; 223. Rotating column; 224. Blade body; 23. Moving component; 231. Connecting plate; 232. Placing groove; 233. First thread groove; 234. First mounting ring; 24. Second mounting ring; 25. Air outlet component; 251. Through groove; 252. Third installation groove; 253. Fourth installation groove; 254. Baffle; 255. Spring; 256. Clamping block; 26. Fixed plate; 261. Second thread groove; 27. Clamping plate; 271. Third thread groove; 272. Threaded column; 273. Clamping column; 28. Cleaning component; 281. Cleaning plate; 282. Blade groove; 283. Scraper; 284. Fifth installation groove; 285. Reciprocating lead screw; 286. Roller; 287. Moving block; 288. Cleaning block; 29. Fixed column; 3. Partition net. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In order to solve the problem that the blades in the fan are all fixed and cannot adjust the inclination angle of the blades according to the specific working conditions, please refer to Figures 1 - 10 as shown.

[0034] Embodiment 1: An efficient centrifugal fan impeller structure, including a box body 1, a first installation groove 101 is opened on the inner side wall of the box body 1, a servo motor 11 is fixedly connected to the side wall of the box body 1, an impeller assembly 2 is arranged inside the box body 1, and an air outlet component 25 is arranged on the side wall of the box body 1;

[0035] The impeller assembly 2 includes a mounting seat 21 movably connected to the inner wall of the first mounting groove 101. The output end of the servo motor 11 is fixedly connected to one end of the mounting seat 21. A second mounting groove 201 is formed at the end of the mounting seat 21 away from the servo motor 11. A telescopic rod 203 is movably connected to the inner wall of the second mounting groove 201. A driving assembly 22 is arranged on the side wall of the telescopic rod 203. A moving assembly 23 is arranged at the end of the telescopic rod 203 away from the mounting seat 21. A fixing plate 26 is fixedly connected to the inner wall of the mounting seat 21. The model of the servo motor 11 is RE18P-2DK.1E.2R and it is produced by Ziehl-Abegg Electromechanical Equipment Co., Ltd.

[0036] The driving assembly 22 includes a first gear 221 fixedly connected to the side wall of the telescopic rod 203. Five second gears 222 are evenly meshed and connected to the side wall of the first gear 221. A rotating column 223 is fixedly connected to one end of the second gear 222. The end of the rotating column 223 away from the second gear 222 movably penetrates through the fixing plate 26. A blade body 224 is fixedly connected to the side wall of the end of the rotating column 223 away from the fixing plate 26. A cleaning assembly 28 is arranged on the side wall of the blade body 224.

[0037] The moving assembly 23 includes a connecting plate 231 movably connected to one end of the fixing plate 26. A placing groove 232 is formed at the end of the connecting plate 231 away from the fixing plate 26. A clamping plate 27 is snap-fitted to the inner wall of the placing groove 232. A plurality of first threaded grooves 233 are evenly formed in the inner bottom wall of the placing groove 232. The connecting plate 231 is movably connected to a first mounting ring 234 through the cleaning assembly 28.

[0038] The cleaning assembly 28 includes a cleaning plate 281. A blade groove 282 is formed at one end of the cleaning plate 281. The blade body 224 is slidably connected to the inner wall of the blade groove 282. A scraping plate 283 is fixedly connected to the outer side wall at the port of the blade groove 282. A fifth mounting groove 284 is formed in the inner wall of the blade groove 282. A reciprocating lead screw 285 is movably connected inside the fifth mounting groove 284. Roller 286 is fixedly connected to the side walls at both ends of the reciprocating lead screw 285. A moving block 287 is movably connected to the side wall of the reciprocating lead screw 285. The moving block 287 is slidably connected to the inner wall of the fifth mounting groove 284. A cleaning block 288 is fixedly connected to one end of the moving block 287.

[0039] As described above, after the limit of the clamping plate 27 is released by the threaded post 272, the clamping plate 27 is pulled out, and then the connecting plate 231 is driven away from the fixed plate 26. The connecting plate 231 drives the cleaning plate 281 to slide on the blade body 224 through the first mounting ring 234, so that the cleaning plate 281 drives the scraping plate 283 to clean the dust and other impurities adhered to the side wall of the blade body 224. Then, the roller 286 drives the reciprocating screw rod 285 to rotate, so that the reciprocating screw rod 285 drives the moving block 287 to slide on the inner wall of the fifth mounting groove 284, so that the moving block 287 drives the cleaning block 288 to reciprocate and clean the dust and other impurities adhered to the side wall of the blade body 224 again, and at the same time, the dust and other impurities accumulated on the surface of the scraping plate 283 can also be cleaned, thereby realizing double cleaning and making the cleaning more thorough.

[0040] After the connecting plate 231 moves to the end of the blade body 224 away from the fixed plate 26, the clamping plate 27 is rotated to drive the connecting plate 231 to rotate. The connecting plate 231 drives the telescopic rod 203 to rotate, and the telescopic rod 203 drives the first gear 221 to rotate. The first gear 221 simultaneously drives five second gears 222 to rotate, so that the second gears 222 drive the rotating columns 223 to rotate respectively, so that the rotating columns 223 drive the blade body 224 to rotate, thereby realizing the angle adjustment of the blade body 224, so that the worker can synchronously adjust the inclination angles of the five blade bodies 224 according to the specific working conditions, so that the fan can maintain a high output efficiency under different working conditions, thereby reducing energy waste.

[0041] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that a second threaded groove 261 is evenly opened at one end of the fixed plate 26 away from the first gear 221, and two third threaded grooves 271 are opened on the side wall of the clamping plate 27. A threaded post 272 is threadedly connected to the inner wall of the third threaded groove 271. The threaded post 272 is threadedly connected to the first threaded groove 233 and the second threaded groove 261. A plurality of clamping columns 273 are evenly and fixedly connected to one end of the clamping plate 27. The clamping columns 273 pass through the first threaded groove 233 and are snap-fitted with the second threaded groove 261.

[0042] The air outlet assembly 25 includes a through groove 251 opened on the side wall of the box body 1. The inner top wall of the through groove 251 is provided with a third mounting groove 252, and the inner side wall of the through groove 251 is provided with a fourth mounting groove 253. A baffle 254 is slidably connected to the inner wall of the third mounting groove 252. A spring 255 is fixedly connected to the inner wall of the fourth mounting groove 253. One end of the spring 255 is fixedly connected with a clamping block 256. When the fan is not in use, the baffle 254 is used to block the through groove 251 to reduce the entry of dust and other impurities into the fan through the through groove 251. When the fan is in use, the baffle 254 is pushed into the fourth mounting groove 253, and then the elastic force of the spring 255 is used to make the spring 255 drive the clamping block 256 to clamp the baffle 254, thereby preventing the baffle 254 from falling.

[0043] A limiting groove 102 is formed in the inner wall of the first installation groove 101. A limiting ring 202 is fixedly connected to the side wall of the mounting base 21. The limiting ring 202 is slidably connected to the inner wall of the limiting groove 102. The mounting base 21 is limited by the limiting ring 202, increasing the rotational stability of the mounting base 21.

[0044] One end of the rotating column 223 away from the first gear 221 is movably connected to a second mounting ring 24. Four fixing columns 29 are uniformly and fixedly connected to the outer side wall of the second mounting ring 24. One end of the fixing column 29 away from the second mounting ring 24 is fixedly connected to the inner wall of the box body 1. The second mounting ring 24 limits the rotating column 223, increasing the adjustment stability of the blade body 224. Secondly, the second mounting ring 24 is fixed by the fixing column 29, thereby increasing the stability of the second mounting ring 24.

[0045] The side wall of the scraping plate 283 is provided with an inclined surface. The shape of the moving block 287 is L-shaped. The bristles on the side wall of the cleaning block 288 are in contact with the inclined surface of the scraping plate 283. The inclined surface increases the cleaning effect. Secondly, due to the bristles on the side wall of the cleaning block 288 being in contact with the inclined surface, the bristles can clean the dust accumulated on the inclined surface more thoroughly.

[0046] A partition net 3 is arranged on the inner wall at the port of the box body 1. The center point of the clamping plate 27 is collinear with the connection line of the two third threaded grooves 271. The nominal diameter of the clamping column 273 is smaller than the nominal diameters of the first threaded groove 233 and the second threaded groove 261, which is used to enable the clamping column 273 to pass through the first threaded groove 233 and then be engaged with the second threaded groove 261.

[0047] As can be seen from the above, rotate the threaded column 272 to release the threaded connection with the second threaded groove 261 and the first threaded groove 233, and then pull the clamping plate 27 to release the engagement connection between the clamping column 273 and the second threaded groove 261 and the first threaded groove 233, thereby releasing the limit of the connecting plate 231, and then cleaning the blade body 224 and adjusting the angle of the blade body 224. After the adjustment is completed, directly push the connecting plate 231 in the reverse direction. After the connecting plate 231 is reset, insert the clamping plate 27 into the placement groove 232, so that the clamping column 273 is engaged with the second threaded groove 261 and the first threaded groove 233. Finally, rotate the threaded column 272 to connect with the second threaded groove 261 and the first threaded groove 233 by threads, which can achieve quick disassembly, installation and locking, improving the operation convenience.

[0048] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impeller structure of an efficient centrifugal fan, comprising a box body (1), characterized in that: On the inner side wall of the box body (1), a first installation groove (101) is provided. A servo motor (11) is fixedly connected to the side wall of the box body (1). An impeller assembly (2) is arranged inside the box body (1). An air outlet assembly (25) is arranged on the side wall of the box body (1). The impeller assembly (2) includes a mounting seat (21) movably connected to the inner wall of the first installation groove (101). The output end of the servo motor (11) is fixedly connected to one end of the mounting seat (21). A second installation groove (201) is provided at the end of the mounting seat (21) away from the servo motor (11). A telescopic rod (203) is movably connected to the inner wall of the second installation groove (201). A driving assembly (22) is arranged on the side wall of the telescopic rod (203). A moving assembly (23) is arranged at the end of the telescopic rod (203) away from the mounting seat (21). A fixing plate (26) is fixedly connected to the inner wall of the mounting seat (21).

2. The impeller structure of an efficient centrifugal fan according to claim 1, wherein: The driving assembly (22) includes a first gear (221) fixedly connected to the side wall of the telescopic rod (203). Five second gears (222) are evenly meshed with the side wall of the first gear (221). A rotating column (223) is fixedly connected to one end of the second gear (222). The end of the rotating column (223) away from the second gear (222) movably penetrates through the fixing plate (26). A blade body (224) is fixedly connected to the side wall of the end of the rotating column (223) away from the fixing plate (26). A cleaning assembly (28) is arranged on the side wall of the blade body (224).

3. An efficient centrifugal fan impeller structure according to claim 1, characterized in that: The moving assembly (23) includes a connecting plate (231) movably connected to one end of the fixing plate (26). A placement groove (232) is provided at the end of the connecting plate (231) away from the fixing plate (26). A clamping plate (27) is snap-fitted to the inner wall of the placement groove (232). A number of first threaded grooves (233) are evenly provided on the inner bottom wall of the placement groove (232). The connecting plate (231) is movably connected to a first mounting ring (234) through the cleaning assembly (28).

4. The impeller structure of an efficient centrifugal fan according to claim 2, characterized in that: The cleaning assembly (28) includes a cleaning plate (281). A blade groove (282) is provided at one end of the cleaning plate (281). The blade body (224) is slidably connected to the inner wall of the blade groove (282). A scraping plate (283) is fixedly connected to the outer side wall at the port of the blade groove (282). A fifth installation groove (284) is provided on the inner wall of the blade groove (282). A reciprocating lead screw (285) is movably connected inside the fifth installation groove (284). Roller wheels (286) are fixedly connected to the side walls at both ends of the reciprocating lead screw (285). A moving block (287) is movably connected to the side wall of the reciprocating lead screw (285). The moving block (287) is slidably connected to the inner wall of the fifth installation groove (284). A cleaning block (288) is fixedly connected to one end of the moving block (287).

5. The impeller structure of an efficient centrifugal fan according to claim 3, characterized in that: One end of the fixed plate (26) away from the first gear (221) is evenly provided with second threaded grooves (261). Two third threaded grooves (271) are provided on the side wall of the clamping plate (27). A threaded post (272) is threadedly connected to the inner wall of the third threaded groove (271). The threaded post (272) is threadedly connected to the first threaded groove (233) and the second threaded groove (261). A plurality of clamping posts (273) are evenly and fixedly connected to one end of the clamping plate (27). The clamping posts (273) penetrate through the first threaded groove (233) and are snap-connected to the second threaded groove (261).

6. The impeller structure of an efficient centrifugal fan according to claim 1, characterized in that: The air outlet assembly (25) includes a through groove (251) provided on the side wall of the box body (1). A third installation groove (252) is provided on the inner top wall of the through groove (251). A fourth installation groove (253) is provided on the inner side wall of the through groove (251). A baffle plate (254) is slidably connected to the inner wall of the third installation groove (252). A spring (255) is fixedly connected to the inner wall of the fourth installation groove (253). One end of the spring (255) is fixedly connected to a clamping block (256).

7. An efficient centrifugal fan impeller structure according to claim 1, characterized in that: A limiting groove (102) is provided on the inner wall of the first installation groove (101). A limiting ring (202) is fixedly connected to the side wall of the mounting seat (21). The limiting ring (202) is slidably connected to the inner wall of the limiting groove (102).

8. The impeller structure of an efficient centrifugal fan according to claim 2, wherein: One end of the rotating column (223) away from the first gear (221) is movably connected to a second mounting ring (24). Four fixing columns (29) are evenly and fixedly connected to the outer side wall of the second mounting ring (24). One end of the fixing column (29) away from the second mounting ring (24) is fixedly connected to the inner wall of the box body (1).

9. The impeller structure of an efficient centrifugal fan according to claim 4, characterized in that: The side wall of the scraping plate (283) is provided with an inclined surface. The moving block (287) is L-shaped. The bristles on the side wall of the cleaning block (288) are in contact with the inclined surface of the scraping plate (283).

10. An impeller structure of an efficient centrifugal fan according to claim 1, characterized in that: A partition net (3) is provided on the inner wall at the port of the box body (1). The center point of the clamping plate (27) is collinear with the connection line of the two third threaded grooves (271). The nominal diameter of the clamping post (273) is smaller than the nominal diameters of the first threaded groove (233) and the second threaded groove (261).

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