Low-noise fan cross-flow fan blade convenient to maintain, disassemble and assemble

Abstract

The utility model relates to the technical field of cross-flow fan blades, and provides a low-noise fan cross-flow fan blade convenient to maintain, disassemble and assemble, which comprises an end cover, a fixing structure is arranged at the middle position of one side of the end cover through bolts, a noise reduction structure is uniformly arranged on one side of the end cover, a disassembly and assembly structure is arranged at one end of each noise reduction structure, and the other end of each noise reduction structure is connected with the end cover. The disassembly and assembly structure comprises a first fixing plate, a second fixing plate, a first connecting base, a long bolt, a second connecting base, a short bolt, a third connecting base, a limiting hole and a limiting pin, and the first fixing plate is arranged at one end of the noise reduction structure. According to the utility model, the dismounting structure is arranged, the first fixing plate and the second fixing plate are separated from each other by loosening the long bolts, the device can be separated into independent blade groups, and the independent blade groups can be dismounted by loosening the short bolts according to the damage condition of the blades, so that the function that the device is convenient to dismount and replace the blades is realized; and therefore, the use convenience of the cross-flow fan blade of the fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cross flow fan blade technical field, especially a low noise fan cross flow fan blade convenient to maintain dismounting. BACKGROUND

[0002] Cross flow fan blade is a kind of special fan blade, commonly found in air conditioner, air purifier and automobile air conditioner and ventilation system and household appliances and automobile parts, it is inhaled from multiple directions by the way of cross flow and is discharged through blade, to realize uniform air flow;

[0003] Therefore, the patent with the authorization announcement No.CN215566841U discloses a right oblique type low noise cross flow fan blade, including first mounting piece and second mounting piece, the middle part of the first mounting piece on both sides is equipped with a plurality of second mounting pieces, the second mounting piece includes blade A and connecting ring installed on the side of blade A, and connecting threaded ring A is arranged on the other side of blade A, the inside of connecting ring is provided with connecting threaded port matched with connecting threaded ring A, and the inside of connecting threaded port is provided with sound-absorbing gasket, the first mounting piece and the second mounting piece that can be separately disassembled are arranged, the cross flow fan blade is convenient to disassemble when overhauling, if part of the parts is damaged, it can be single disassembled and replaced, without replacing the whole body;

[0004] The cross flow fan blade described above is provided with the first mounting piece and the second mounting piece that can be separately disassembled, part of the parts is damaged, can be single disassembled and replaced, and sound-absorbing gasket is added at the splicing place of the first mounting piece and the second mounting piece, so that noise is reduced during work, however, the device only replaces the first mounting piece and the second mounting piece, and the blade cannot be replaced alone, and the cross flow fan blade generates noise when rotating due to vortex generated on the surface of blade, and sound-absorbing gasket added alone at the splicing place cannot effectively eliminate noise. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a low noise fan cross flow fan blade convenient to maintain dismounting, to solve the defects that the existing fan cross flow fan blade is inconvenient to disassemble and replace blade and inconvenient to reduce noise.

[0006] In order to solve the above technical problem, the utility model provides the following technical scheme: a low noise fan cross flow fan blade convenient to maintain dismounting, including end cover;

[0007] The middle position of one side of the end cover is equipped with fixed structure through bolt;

[0008] The side of the end cover is evenly provided with noise reduction structure;

[0009] One end of the noise reduction structure is provided with a disassembly structure, the disassembly structure comprises a first fixed plate, a second fixed plate, a first connecting seat, a long bolt, a second connecting seat, a short bolt, a third connecting seat, a limiting hole and a limiting pin, one end of the first fixed plate is provided with the second fixed plate, the outer walls of the first fixed plate and the second fixed plate away from one end of the noise reduction structure are uniformly provided with the first connecting seat, the outer walls of the first fixed plate and the second fixed plate close to one end of the noise reduction structure are uniformly provided with the second connecting seat, the first fixed plate is uniformly provided with the limiting hole close to one end of the second fixed plate, the limiting hole is provided with the limiting pin, the third connecting seat is uniformly fixed to the outer wall of the end cover close to one end of the noise reduction structure, the first connecting seat is provided with the long bolt, and the second connecting seat is provided with the short bolt.

[0010] Preferably, the fixing structure comprises a shaft seat, a shaft hole, a fixing bolt and a fixing seat, the fixing seat is arranged at the middle position of the inside of the end cover away from one end of the noise reduction structure, the shaft seat is fixed at the middle position of one end of the fixing seat, the shaft hole is arranged in the inside of the shaft seat, and the fixing bolt is threadedly connected to one side of the shaft seat.

[0011] Preferably, the shaft hole in the inside of the shaft seat is provided with a shaft key groove on one side, one end of the fixing bolt extends into the inside of the shaft hole, and the fixing seat and the end cover are fixedly connected through the bolt.

[0012] Preferably, the noise reduction structure comprises a blade, a connecting block, a clamping groove, sound-absorbing cotton, a sound-absorbing plate, a through hole and a connecting groove, the blades are uniformly arranged at one end of the end cover and the first fixed plate, the two ends of the blades are fixedly provided with the connecting blocks, the clamping grooves are arranged on one side in the inside of the blades, the sound-absorbing plates are arranged in the clamping grooves, the sound-absorbing cotton is arranged on one side in the inside of the sound-absorbing plate close to the blade, the through holes are uniformly arranged in the inside of the sound-absorbing plate, and the connecting grooves are uniformly arranged in the inside of the end cover, the first fixed plate and the second fixed plate close to the blade.

[0013] Preferably, the blade has an arc shape in a top view, the clamping groove is located on the inner side of the blade, the connecting blocks are respectively connected with the end cover, the first fixed plate and the second fixed plate through the connecting grooves to form a clamping structure, and the sound-absorbing plate and the blade are clamped with each other through the clamping groove.

[0014] Preferably, the two ends of the long bolt pass through the third connecting seat and extend to one side of the end cover, and the two ends of the short bolt are located on one side of the connecting block.

[0015] Preferably, one end of the limiting pin is fixedly connected with one end of the second fixed plate, and the limiting pin and the first fixed plate form a clamping structure through the limiting hole.

[0016] The low-noise fan through-flow fan blade convenient to maintain and disassemble has the advantages that

[0017] The device can be separated into separate blade groups by loosening the long bolts and separating the first fixed plate and the second fixed plate from each other, the separate blade groups can be disassembled by loosening the short bolts according to the damage of the blades, the device is convenient to disassemble and replace the blades, and the convenience of the fan through-flow fan blade in use is improved.

[0018] The noise reduction structure is provided with the sound-absorbing cotton, the sound-absorbing plate is placed outside the sound-absorbing cotton, one end of the sound-absorbing plate is slid into the clamping groove from one end of the blade, the sound-absorbing plate and the blade clamp and fix the sound-absorbing cotton, the through hole disturbs the air inside the sound-absorbing plate when the blade rotates, air vortex is avoided, noise during rotation is absorbed by the sound-absorbing cotton, the device is convenient to reduce noise, and the applicability of the fan through-flow fan blade in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic view of the utility model;

[0020] Figure 2 It is a front view schematic view of the utility model;

[0021] Figure 3 It is a front view schematic view of the fixing structure of the utility model;

[0022] Figure 4 It is an explosion schematic view of the noise reduction structure of the utility model;

[0023] Figure 5 It is a top view sectional schematic view of the noise reduction structure of the utility model;

[0024] Figure 6 It is a front view schematic view of the dismounting structure of the utility model;

[0025] Figure 7 It is an explosion schematic view of the dismounting structure of the utility model.

[0026] The reference signs in the drawing are explained as follows: 1, end cover; 2, fixing structure; 21, shaft seat; 22, shaft hole; 23, fixed bolt; 24, fixed seat; 3, noise reduction structure; 31, blade; 32, connecting block; 33, clamping groove; 34, sound-absorbing cotton; 35, sound-absorbing plate; 36, through hole; 37, connecting groove; 4, dismounting structure; 41, first fixed plate; 42, second fixed plate; 43, first connecting seat; 44, long bolt; 45, second connecting seat; 46, short bolt; 47, third connecting seat; 48, limiting hole; 49, limiting pin. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a low -noisy fan cross flow fan blade convenient to maintain dismounting, including end cover 1.

[0029] Refer to Figure 1 and Figure 3 As shown in the drawings, the middle position of one side of end cover 1 is provided with fixed structure 2 through bolt, and fixed structure 2 includes shaft seat 21, shaft hole 22, fixed bolt 23 and fixed seat 24, fixed seat 24 is arranged at the middle position of the end cover 1 away from the noise reduction structure 3 one end inside, the middle position of one end of fixed seat 24 is fixed with shaft seat 21, the inside of shaft seat 21 is provided with shaft hole 22, one side of shaft seat 21 is provided with fixed bolt 23, the inside of shaft hole 22 of shaft seat 21 is provided with shaft key groove, one end of fixed bolt 23 extends to the inside of shaft hole 22, and fixed seat 24 and end cover 1 are fixedly connected through bolt.

[0030] After the device is assembled, it is moved to the end of the driving shaft, so that the driving shaft is moved to the inside of shaft seat 21, and the shaft key of the driving shaft is clamped with the shaft key groove in the inside of shaft seat 21, then the fixed bolt 23 is rotated, so that one end of fixed bolt 23 abuts with one side of the driving shaft, and then the driving shaft is fixedly connected with shaft seat 21, so that the driving shaft drives the device to rotate.

[0031] Refer to Figure 1 、 Figure 4 and Figure 5As shown, the side of the end cover 1 is uniformly provided with a noise reduction structure 3, the noise reduction structure 3 includes a blade 31, a connecting block 32, a clamping groove 33, a sound-absorbing cotton 34, a sound-absorbing plate 35, a through hole 36 and a connecting groove 37, the blade 31 is uniformly arranged at one end of the end cover 1 and the first fixed plate 41, both ends of the blade 31 are fixedly provided with the connecting block 32, one side of the inside of the blade 31 is provided with the clamping groove 33, the inside of the clamping groove 33 is provided with the sound-absorbing plate 35, one side of the inside of the sound-absorbing plate 35 close to the blade 31 is provided with the sound-absorbing cotton 34, the inside of the sound-absorbing plate 35 is uniformly provided with the through hole 36, the connecting groove 37 is uniformly arranged in the inside of the end cover 1, the first fixed plate 41 and the second fixed plate 42 close to one end of the blade 31, the top view of the blade 31 is arc-shaped, the clamping groove 33 is located on the inside of the blade 31, the connecting block 32 forms a clamping structure with the end cover 1, the first fixed plate 41 and the second fixed plate 42 through the connecting groove 37, and the sound-absorbing plate 35 and the blade 31 are clamped with each other through the clamping groove 33.

[0032] The sound-absorbing cotton 34 is placed on the outside of the sound-absorbing plate 35, then one end of the sound-absorbing plate 35 is slid into the inside of the clamping groove 33 from one end of the blade 31, so that the sound-absorbing plate 35 and the blade 31 clamp and fix the sound-absorbing cotton 34, the blade 31 is moved to one end of the end cover 1 and the first fixed plate 41, so that the connecting block 32 moves to the inside of the connecting groove 37, then the blade 31 is fixed together through the short bolt 46.

[0033] Referring to Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, one end of the noise reduction structure 3 is provided with a dismounting structure 4, the dismounting structure 4 includes a first fixed plate 41, a second fixed plate 42, a first connecting seat 43, a long bolt 44, a second connecting seat 45, a short bolt 46, a third connecting seat 47, a limiting hole 48 and a limiting pin 49, the first fixed plate 41 is arranged at one end of the noise reduction structure 3, one end of the first fixed plate 41 is provided with the second fixed plate 42, the first fixed plate 41 and the second fixed plate 42 are uniformly fixed with the first connecting seat 43 on the outer wall away from one end of the noise reduction structure 3, the first fixed plate 41 and the second fixed plate 42 are uniformly fixed with the second connecting seat 45 on the outer wall close to one end of the noise reduction structure 3, the first fixed plate 41 is uniformly provided with the limiting hole 48 inside close to one end of the second fixed plate 42, the limiting hole 48 is provided with the limiting pin 49 inside, the third connecting seat 47 is uniformly fixed on the outer wall of the end cover 1 close to one end of the noise reduction structure 3, the inside of the first connecting seat 43 is penetrated by the long bolt 44, the inside of the second connecting seat 45 is penetrated by the short bolt 46, both ends of the long bolt 44 pass through the third connecting seat 47 and extend to one side of the end cover 1, both ends of the short bolt 46 are located on one side of the connecting block 32, one end of the limiting pin 49 is fixedly connected with one end of the second fixed plate 42, and the limiting pin 49 and the first fixed plate 41 form a clamping structure through the limiting hole 48.

[0034] The fan blade group fixed by the short bolts 46 is fixed between the two groups of end covers 1 by the long bolts 44, so that the device is assembled into a shape, and the stability between the first fixed plate 41 and the second fixed plate 42 is enhanced under the action of the limiting pin 49.

[0035] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low-noise cross-flow fan blade that is easy to maintain and disassemble, including an end cover (1); Its features are: The end cap (1) is fixed with a fixing structure (2) by bolts at the middle position on one side; Noise reduction structures (3) are uniformly provided on one side of the end cap (1); One end of each noise reduction structure (3) is provided with a disassembly structure (4). The disassembly structure (4) includes a first fixing plate (41), a second fixing plate (42), a first connecting seat (43), a long bolt (44), a second connecting seat (45), a short bolt (46), a third connecting seat (47), a limiting hole (48), and a limiting pin (49). The first fixing plate (41) is located at one end of the noise reduction structure (3), and a second fixing plate (42) is located at one end of the first fixing plate (41). The outer walls of the first fixing plate (41) and the second fixing plate (42) away from the noise reduction structure (3) are uniformly fixed with first fixing plates. The connecting seat (43) has a second connecting seat (45) evenly fixed on the outer wall of the first fixing plate (41) and the second fixing plate (42) near the noise reduction structure (3). The first fixing plate (41) has a limit hole (48) evenly opened on the inner side of the first fixing plate (41) near the second fixing plate (42). The limit hole (48) is provided with a limit pin (49). The third connecting seat (47) is evenly fixed on the outer wall of the end cap (1) near the noise reduction structure (3). The first connecting seat (43) has a long bolt (44) penetrating inside, and the second connecting seat (45) has a short bolt (46) penetrating inside.

2. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 1, characterized in that: The fixing structure (2) includes a bearing seat (21), a shaft hole (22), a fixing bolt (23), and a fixing seat (24). The fixing seat (24) is located at the middle position inside the end cap (1) away from the noise reduction structure (3). The bearing seat (21) is fixed at the middle position of one end of the fixing seat (24). The shaft hole (22) is opened inside the bearing seat (21). The fixing bolt (23) is threadedly connected to one side of the bearing seat (21).

3. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 2, characterized in that: A keyway is provided on one side of the shaft hole (22) inside the shaft seat (21), and one end of the fixing bolt (23) extends into the inside of the shaft hole (22). The fixing seat (24) and the end cover (1) are fixedly connected by bolts.

4. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 1, characterized in that: The noise reduction structure (3) includes blades (31), connecting blocks (32), snap-fit ​​grooves (33), sound-absorbing cotton (34), sound-absorbing plates (35), through holes (36), and connecting grooves (37). The blades (31) are evenly arranged at one end of the end cap (1) and the first fixing plate (41). Both ends of the blades (31) are fixed with connecting blocks (32). A snap-fit ​​groove (33) is opened on one side inside the blades (31). A sound-absorbing plate (35) is arranged inside the snap-fit ​​grooves (33). A sound-absorbing cotton (34) is arranged on the side of the sound-absorbing plate (35) near the blades (31). Through holes (36) are evenly opened inside the sound-absorbing plate (35). The connecting grooves (37) are evenly opened inside the end cap (1), the first fixing plate (41), and the second fixing plate (42) near the end of the blades (31).

5. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 4, characterized in that: The blade (31) has an arc-shaped cross-section when viewed from above. The snap-fit ​​groove (33) is located inside the blade (31). The connecting block (32) forms a snap-fit ​​structure with the end cap (1), the first fixing plate (41), and the second fixing plate (42) through the connecting groove (37). The sound-absorbing plate (35) and the blade (31) are snapped together through the snap-fit ​​groove (33).

6. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 4, characterized in that: Both ends of the long bolt (44) pass through the third connecting seat (47) and extend to one side of the end cap (1), while both ends of the short bolt (46) are located on one side of the connecting block (32).

7. The low-noise cross-flow fan blade for easy maintenance and disassembly according to claim 1, characterized in that: One end of the limiting pin (49) is fixedly connected to one end of the second fixing plate (42), and the limiting pin (49) and the first fixing plate (41) form a locking structure through the limiting hole (48).

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