Noise elimination and vibration reduction structure for inlet and outlet of air blower

Abstract

The utility model discloses an air blower inlet and outlet noise elimination and vibration reduction structure, which relates to the technical field of air blowers and comprises a base, a workbench is arranged beside the base, and an air shaft is rotatably arranged among a plurality of elastic pieces. Through the arrangement of a linkage mechanism, an oil storage box, a sliding plate, an oil outlet, a connecting shaft, an L-shaped rod, a limiting rod, a meshing ring, a reciprocating screw rod and two fixing plates, a lubricating mechanism and a vibration reduction mechanism are synchronized to work at the same frequency according to the rotating speed of a main shaft; the vibration reduction mechanism can provide reasonable vibration reduction frequency and synchronously drive the lubricating mechanism to adjust the dripping frequency of lubricating oil in a self-adaptive mode according to the rotating speed of the lubricating mechanism, lubrication between the main shaft and the shell is guaranteed, noise of an inlet and an outlet of the air blower is reduced, the service life of the device is prolonged, disassembly and maintenance are reduced, and working efficiency is improved. The amount of lubricating oil in the machine does not need to be manually detected.

Description

Technical Field

[0001] The utility model relates to the technical field of blowers, in particular to a blower inlet and outlet noise reduction and vibration reduction structure. Background Art

[0002] A blower is a rotary compressor that uses two or three bladed rotors to move relative to each other in a cylinder to compress and transport gas. The blower has a simple structure and is easy to manufacture. It is suitable for gas transportation and pressurization in low-pressure situations and can also be used as a vacuum pump.

[0003] The utility model patent with patent number CN220396014U discloses a Roots blower with silenced inlet and outlet, comprising: a base, a support leg fixedly mounted on the bottom wall of the base, a mounting plate provided above the base, a Roots blower body mounted on the mounting plate, a lifting and adjusting mechanism provided on the base, the lifting and adjusting mechanism comprising a double-headed screw, two support rods, two movable rods and two pairs of push-pull rods. During the installation process of the utility model, when it is necessary to adjust the height of the Roots blower body, the crank is turned to drive the double-headed screw to rotate, thereby driving the two movable rods to move toward or away from each other on the two support rods. The moving direction of the two movable rods is determined by the rotation direction of the double-headed screw. When the two movable rods move, they can drive the two pairs of push-pull rods to flip, thereby driving the mounting plate to move upward or downward, thereby adjusting the height of the air outlet pipe of the Roots blower body. This makes it easy to apply to equipment with pipes of different heights and improves its installation convenience.

[0004] The above-mentioned device adjusts the height of the air outlet pipe of the Roots blower body by moving the mounting plate up or down, which is convenient for use with a variety of equipment with pipe connections at different heights, thereby improving the convenience of its installation. However, when the blower is actually used, the high-speed rotation of the impeller can easily cause the screws of the base to loosen, thereby causing the shell to be unstable and produce vibration noise. In addition, the noise generated by the blower during operation is mostly due to the internal speed being too fast, resulting in internal overheating, and the internal wind flowing, causing the lubricating fluid to evaporate too quickly, resulting in increased friction of the internal shaft and causing noise at the air inlet and outlet. The staff needs to stop the machine and add lubricant according to the situation of the machine, which not only reduces work efficiency but also greatly increases the labor intensity of the staff. Utility Model Content

[0005] The technical solution of the present invention aims to solve the technical problem that the existing technical solutions are too simple, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a blower inlet and outlet silencer and vibration reduction structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a blower inlet and outlet silencer and vibration damping structure, comprising a base, a workbench is provided beside the base, a shell is provided on the top of the workbench, an air outlet is provided on the top of the shell, silencer cotton is provided at the air outlet, an air outlet regulator is provided at one end of the shell, a motor is provided on the top of the base, a coupling is fixedly provided on the end of the motor output shaft, a main shaft is provided on the end of the coupling, a number of impellers are fixedly provided on the main shaft, a linkage mechanism is sleeved on the main shaft, four bolts are provided on the bottom of the shell, a vibration damping mechanism is provided on the top of the workbench, and a lubrication mechanism is provided inside the shell.

[0007] Preferably, the vibration damping mechanism includes two wedge blocks, two vibration damping racks, a vibration damping gear, four support rods, two interference springs, two baffles and two limit slots, the two limit slots are respectively arranged on both sides of the bottom of the shell, the two baffles are fixedly arranged on the top of the workbench, the vibration damping gear is rotatably arranged on the top of the workbench, the two interference springs are respectively fixed on one side wall of the two baffles, the four support rods are slidably arranged on the top of the workbench in pairs, the two vibration damping racks are respectively fixed on the top of the four corresponding support rods, and the two wedge blocks are respectively arranged on the ends of the two vibration damping racks.

[0008] Preferably, the two wedge-shaped blocks are adapted to the sizes of the corresponding limiting grooves.

[0009] Preferably, the linkage mechanism includes a first transmission belt, a first bevel gear, a first transmission shaft, a second bevel gear, a second transmission belt, a second transmission shaft, a first mounting plate, two third transmission shafts, a fourth transmission shaft, a third bevel gear, a fourth bevel gear and a third transmission belt, the first transmission belt is sleeved on the main shaft, the first transmission shaft is rotatably arranged on the inner side of the first transmission belt, the first bevel gear is fixedly arranged at the end of the first transmission shaft, the fourth bevel gear is fixedly arranged in the middle of the main shaft, the two third transmission shafts are rotatably arranged on the top of the workbench, the third transmission belt is sleeved on the two third transmission shafts, the fourth transmission shaft is fixedly arranged on one of the third transmission shafts, the third bevel gear is fixedly arranged on the top of the fourth transmission shaft, the first mounting plate is fixedly arranged on the inner wall of the shell, the second transmission shaft is rotatably arranged on the side wall of the first mounting plate, the second bevel gear is fixedly arranged at the end of the second transmission shaft, and the second transmission belt is sleeved on the second transmission shaft.

[0010] Preferably, the lubrication mechanism includes an oil storage box, a sliding plate, an oil outlet, a connecting shaft, an L-shaped rod, a limit rod, a meshing ring, a reciprocating screw and two fixed plates, the two fixed plates are fixedly arranged on the inner wall of the shell, the reciprocating screw is rotatably arranged between the two fixed plates, the meshing ring is meshingly sleeved on the outer wall of the reciprocating screw, the limit rod is fixedly arranged on the outer wall of the meshing ring, one end of the limit rod is located on the inner wall of the shell and slides, the connecting shaft is fixedly connected to the end of the reciprocating screw, the L-shaped rod is fixedly arranged on the outer wall of the meshing ring, the oil storage box is fixedly arranged on the inner wall of the shell, the sliding plate is slidably arranged inside the oil storage box, the L-shaped rod is fixedly connected to one end of the sliding plate, and the two oil outlets are respectively arranged in the middle of the sliding plate and the bottom of the oil storage box.

[0011] Preferably, the second transmission belt is in transmission cooperation with the connecting shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The utility model realizes the synchronous operation of the lubrication mechanism and the vibration reduction mechanism according to the rotation speed of the main shaft through the arrangement of the linkage mechanism, the oil storage box, the sliding plate, the oil outlet, the connecting shaft, the L-shaped rod, the limit rod, the meshing ring, the reciprocating screw and the two fixed plates. When the impeller makes a large noise or shakes at high speed, the vibration reduction mechanism can give it a reasonable vibration reduction frequency, and synchronously drives the lubrication mechanism to adaptively adjust the dripping frequency of the lubricating oil according to its rotation speed, thereby ensuring the lubrication between the main shaft and the housing, reducing the noise at the inlet and outlet of the blower, extending the service life of the device, reducing disassembly maintenance, increasing work efficiency, and eliminating the need for manual detection of the amount of lubricating oil inside the machine, thereby greatly reducing the labor intensity of the staff. The operation is simple, convenient and fast, and the applicability is strong.

[0014] (2) The utility model realizes that when the shell bolts are loose, the shell can be automatically limited and fixed by arranging a wedge block, two vibration-damping racks, a vibration-damping gear, four support rods, two resistance springs, two baffles and two limit grooves. The wedge block and the limit groove are arranged so that the shell can still be automatically limited even if it is loose. Moreover, the resistance spring is arranged so that the vibration-damping rack will not be disengaged from the vibration-damping gear even if it moves the maximum distance, thereby ensuring its reset and limit vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the shell of the present invention;

[0017] Figure 3 This is a schematic diagram of the positional relationship between the linkage mechanism and the lubrication mechanism of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the vibration reduction mechanism of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the positional relationship between the vibration reduction mechanism and the linkage mechanism of the utility model.

[0020] Figure: 1. Motor; 2. Base; 3. Coupling; 4. Spindle; 5. Lubrication mechanism; 51. Oil reservoir; 52. Sliding plate; 53. Oil outlet; 54. Connecting shaft; 55. L-shaped rod; 56. Limit rod; 57. Engaging ring; 58. Reciprocating screw; 59. Fixed plate; 6. Vibration reduction mechanism; 61. Wedge block; 62. Vibration reduction rack; 63. Vibration reduction gear; 64. Support rod; 65. Resistance spring; 66. Baffle; 67. Limit slot; 7. Linkage Structure; 71. First transmission belt; 72. First bevel gear; 73. First transmission shaft; 74. Second bevel gear; 75. Second transmission belt; 76. Second transmission shaft; 77. First mounting plate; 78. Third transmission shaft; 79. Fourth transmission shaft; 710. Third bevel gear; 711. Fourth bevel gear; 712. Third transmission belt; 8. Air outlet regulator; 9. Housing; 10. Air outlet; 11. Silence cotton; 12. Bolt; 14. Impeller; 15. Workbench. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5, the utility model provides an embodiment: a blower inlet and outlet silencer and vibration reduction structure, including a base 2, a workbench 15 is provided on the side of the base 2, a shell 9 is provided on the top of the workbench 15, an air outlet 10 is provided on the top of the shell 9, and a silencer cotton 11 is provided at the air outlet 10. An air outlet regulator 8 is provided at one end of the shell 9, a motor 1 is provided on the top of the base 2, a coupling 3 is fixedly provided on the end of the output shaft of the motor 1, a main shaft 4 is provided on the end of the coupling 3, a number of impellers 14 are fixedly provided on the main shaft 4, a linkage mechanism 7 is sleeved on the main shaft 4, four bolts 12 are provided on the bottom of the shell 9, a vibration reduction mechanism 6 is provided on the top of the workbench 15, and a lubrication mechanism 5 is provided inside the shell 9. First, the coupling 3 is driven by the rotation of the output shaft of the motor 1, and the coupling 3 drives the main shaft 4 to rotate. The rotation of the main shaft 4 drives the impeller 14 to rotate, and the impeller 14 drives the blower to work normally. When the blower works for a long time, the bolt 12 is easy to loosen. At this time, the main shaft 4 rotates to drive the linkage mechanism 7 to work, and the linkage mechanism 7 drives the vibration reduction mechanism 6 to work. The vibration reduction mechanism 6 fixes the bottom of the shell 9, and the linkage mechanism 7 works synchronously to drive the lubrication mechanism 5 to work. The lubrication mechanism 5 adds lubricating oil to the rotating connection between the main shaft 4 and the shell 9 for lubrication, thereby reducing device wear and increasing the service life of the blower.

[0023] Specifically, the vibration damping mechanism 6 includes two wedge blocks 61, two vibration damping racks 62, a vibration damping gear 63, four support rods 64, two interference springs 65, two baffles 66 and two limiting grooves 67. The two limiting grooves 67 are respectively arranged on both sides of the bottom of the shell 9, the two baffles 66 are fixedly arranged on the top of the workbench 15, the vibration damping gear 63 is rotatably arranged on the top of the workbench 15, the two interference springs 65 are respectively fixed on one side wall of the two baffles 66, the four support rods 64 are slidably arranged in pairs on the top of the workbench 15, the two vibration damping racks 62 are respectively fixed on the top of the four corresponding support rods 64, and the two wedge blocks 61 are respectively arranged at the ends of the two vibration damping racks 62. The vibration-damping gear 63 rotates to drive the vibration-damping rack 62 to move outward, and the vibration-damping rack 62 simultaneously drives the wedge block 61 to move, and the wedge block 61 moves and inserts into the corresponding limit groove 67. Due to the triangular shape of the wedge block 61, when the wedge block 61 is inserted into the limit groove 67, it contacts the limit groove 67 to first press down and then insert the shell 9 to limit the position; when the bolt 12 of the shell 9 is loose, the shell 9 can be automatically limited and fixed, and the setting of the wedge block 61 and the limit groove 67 makes it possible to achieve automatic limitation even if the shell 9 is loose. Moreover, through the setting of the contact spring 65, the vibration-damping rack 62 will not be disengaged from the vibration-damping gear 63 even if it moves the maximum distance, thereby ensuring its reset and limit vibration reduction effect.

[0024] Specifically, the two wedge blocks 61 are adapted to the sizes of the corresponding limiting slots 67 .

[0025] Specifically, the linkage mechanism 7 includes a first transmission belt 71, a first bevel gear 72, a first transmission shaft 73, a second bevel gear 74, a second transmission belt 75, a second transmission shaft 76, a first mounting plate 77, two third transmission shafts 78, a fourth transmission shaft 79, a third bevel gear 710, a fourth bevel gear 711 and a third transmission belt 712. The first transmission belt 71 is sleeved on the main shaft 4, the first transmission shaft 73 is rotatably arranged on the inner side of the first transmission belt 71, the first bevel gear 72 is fixedly arranged at the end of the first transmission shaft 73, and the fourth bevel gear 711 is fixedly arranged on the In the middle of the main shaft 4, the two third transmission shafts 78 are rotatably set on the top of the workbench 15, the third transmission belt 712 is sleeved on the two third transmission shafts 78, the fourth transmission shaft 79 is fixedly set on one of the third transmission shafts 78, the third bevel gear 710 is fixedly set on the top of the fourth transmission shaft 79, the first mounting plate 77 is fixedly set on the inner wall of the shell 9, the second transmission shaft 76 is rotatably set on the side wall of the first mounting plate 77, the second bevel gear 74 is fixedly set on the end of the second transmission shaft 76, and the second transmission belt 75 is sleeved on the second transmission shaft 76. The fourth bevel gear 711 is driven to rotate by the rotation of the main shaft 4, and the rotation of the fourth bevel gear 711 drives the third bevel gear 710 to rotate. The rotation of the third bevel gear 710 drives the fourth transmission shaft 79 to rotate. The rotation of the fourth transmission shaft 79 drives the third transmission shaft 78 to rotate. The rotation of the third transmission shaft 78 drives the third transmission belt 712 to drive another third transmission shaft 78 to rotate. The rotation of another third transmission shaft 78 drives the vibration reduction gear 63 to rotate. While the main shaft 4 rotates, the first transmission belt 71 is synchronously driven to transmit. The first transmission belt 71 drives the first transmission shaft 73 to rotate. The rotation of the first transmission shaft 73 drives the first bevel gear 72 to rotate. The first bevel gear 72 rotates to drive the second bevel gear 74 to rotate, the second bevel gear 74 rotates to drive the second transmission shaft 76 to rotate, and the second transmission shaft 76 rotates to drive the second transmission belt 75; the lubrication mechanism 5 and the vibration reduction mechanism are synchronized to work at the same frequency according to the rotation speed of the main shaft 4, and the vibration reduction mechanism 6 can give it a reasonable vibration reduction frequency when the impeller 14 makes a large noise and shakes at high speed, and synchronously drives the lubrication mechanism 5 to adaptively adjust the dripping frequency of the lubricating oil according to its rotation speed, thereby ensuring lubrication between the main shaft 4 and the housing 9, extending the service life of the device, reducing disassembly maintenance, and increasing work efficiency.

[0026] Specifically, the lubrication mechanism 5 includes an oil storage box 51, a sliding plate 52, an oil outlet 53, a connecting shaft 54, an L-shaped rod 55, a limiting rod 56, a meshing ring 57, a reciprocating screw rod 58 and two fixed plates 59. The two fixed plates 59 are fixedly arranged on the inner wall of the shell 9, the reciprocating screw rod 58 is rotatably arranged between the two fixed plates 59, the meshing ring 57 is meshingly sleeved on the outer wall of the reciprocating screw rod 58, the limiting rod 56 is fixedly arranged on the outer wall of the meshing ring 57, one end of the limiting rod 56 is located on the inner wall of the shell 9 and slides, the connecting shaft 54 is fixedly connected to the end of the reciprocating screw rod 58, the L-shaped rod 55 is fixedly arranged on the outer wall of the meshing ring 57, the oil storage box 51 is fixedly arranged on the inner wall of the shell 9, the sliding plate 52 is slidably arranged inside the oil storage box 51, the L-shaped rod 55 is fixedly connected to one end of the sliding plate 52, and the two oil outlets 53 are respectively arranged in the middle of the sliding plate 52 and the bottom of the oil storage box 51. The second transmission belt 75 drives the connecting shaft 54 to rotate, and the rotation of the connecting shaft 54 drives the reciprocating screw 58 to rotate, and the rotation of the reciprocating screw 58 drives the meshing ring 57 to reciprocate under the limiting action of the limit rod 56, and the movement of the meshing ring 57 synchronously drives the L-shaped rod 55 to move, and the movement of the L-shaped rod 55 drives the sliding plate 52 to move synchronously. When the sliding plate 52 moves so that the two oil outlets 53 coincide, the lubricating oil flows out from the oil outlet 53 to the main shaft 4, thereby lubricating the main shaft 4 and the housing 9; automatic addition of lubricating oil is realized, and there is no need to manually detect the amount of lubricating oil inside the machine, which greatly reduces the labor intensity of the staff, is simple to operate, convenient and fast, and has strong applicability.

[0027] Specifically, the second transmission belt 75 is in transmission cooperation with the connecting shaft 54 .

[0028] Working principle: First, the coupling 3 is driven by the rotation of the output shaft of the motor 1, and the coupling 3 drives the main shaft 4 to rotate. The rotation of the main shaft 4 drives the impeller 14 to rotate, and the impeller 14 drives the blower to work normally. When the blower works for a long time, the bolt 12 is easy to loosen. At this time, the fourth bevel gear 711 is driven to rotate by the rotation of the main shaft 4, and the rotation of the fourth bevel gear 711 drives the third bevel gear 710 to rotate. The rotation of the third bevel gear 710 drives the fourth transmission shaft 79 to rotate, and the rotation of the fourth transmission shaft 79 drives the third transmission shaft 78 to rotate. The rotation of the third transmission shaft 78 drives the third transmission belt 712 to drive another third transmission shaft 78 to rotate. The rotation of the other third transmission shaft 78 drives the vibration reduction gear 63 to rotate, and the vibration reduction rack 62 is driven to move outward respectively through the rotation of the vibration reduction gear 63. The vibration reduction rack 62 synchronously drives the wedge block 61 to move, and the wedge block 61 moves and inserts into the corresponding limit groove 67. Due to the triangular shape of the wedge block 61, when the wedge block 61 is inserted into the limit groove 67 again, it hits the The contact limit groove 67 thus presses down the housing 9 first and then inserts the limit, and while the main shaft 4 rotates, it synchronously drives the first transmission belt 71 to transmit, the first transmission belt 71 drives the first transmission shaft 73 to rotate, the first transmission shaft 73 rotates and drives the first bevel gear 72 to rotate, the first bevel gear 72 rotates and drives the second bevel gear 74 to rotate, the second bevel gear 74 rotates and drives the second transmission shaft 76 to rotate, the second transmission shaft 76 rotates and drives the second transmission belt 75 to transmit, and the second transmission belt 75 drives the first bevel gear 72 to rotate. The connecting shaft 54 rotates, and the rotation of the connecting shaft 54 drives the reciprocating screw 58 to rotate. The rotation of the reciprocating screw 58 drives the meshing ring 57 to reciprocate under the limiting action of the limiting rod 56. The movement of the meshing ring 57 synchronously drives the L-shaped rod 55 to move. The movement of the L-shaped rod 55 drives the sliding plate 52 to move synchronously. When the sliding plate 52 moves so that the two oil outlets 53 coincide, the lubricating oil flows out from the oil outlet 53 to the main shaft 4, thereby lubricating the main shaft 4 and the housing 9, reducing device wear and increasing the service life of the blower.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blower inlet and outlet noise reduction and vibration damping structure, comprising a base (2), a workbench (15) provided on the side of the base (2), a shell (9) provided on the top of the workbench (15), an air outlet (10) provided on the top of the shell (9), a silencer (11) provided at the air outlet (10), an air outlet regulator (8) provided at one end of the shell (9), a plurality of impellers (14) fixedly provided on the main shaft (4), a motor (1) provided on the top of the base (2), a coupling (3) fixedly provided at the end of the output shaft of the motor (1), characterized in that: A main shaft (4) is provided at the end of the coupling (3), a linkage mechanism (7) is sleeved on the main shaft (4), four bolts (12) are provided at the bottom of the housing (9), a vibration reduction mechanism (6) is provided at the top of the workbench (15), and a lubrication mechanism (5) is provided inside the housing (9).

2. A blower inlet and outlet noise reduction and vibration damping structure according to claim 1, characterized in that: The vibration damping mechanism (6) comprises two wedge blocks (61), two vibration damping racks (62), a vibration damping gear (63), four support rods (64), two conflicting springs (65), two baffles (66) and two limiting grooves (67), wherein the two limiting grooves (67) are respectively arranged on both sides of the bottom of the shell (9), the two baffles (66) are fixedly arranged on the top of the workbench (15), the vibration damping gear (63) is rotatably arranged on the top of the workbench (15), the two conflicting springs (65) are respectively fixedly arranged on one side wall of the two baffles (66), the four support rods (64) are slidably arranged in pairs on the top of the workbench (15), the two vibration damping racks (62) are respectively fixedly arranged on the top of the four corresponding support rods (64), and the two wedge blocks (61) are respectively arranged at the ends of the two vibration damping racks (62).

3. The blower inlet and outlet noise reduction and vibration damping structure according to claim 2, characterized in that: The two wedge-shaped blocks (61) are adapted to the sizes of the corresponding limiting grooves (67).

4. The blower inlet and outlet noise reduction and vibration damping structure according to claim 2, characterized in that: The linkage mechanism (7) comprises a first transmission belt (71), a first bevel gear (72), a first transmission shaft (73), a second bevel gear (74), a second transmission belt (75), a second transmission shaft (76), a first mounting plate (77), two third transmission shafts (78), a fourth transmission shaft (79), a third bevel gear (710), a fourth bevel gear (711) and a third transmission belt (712); the first transmission belt (71) is sleeved on the main shaft (4); the first transmission shaft (73) is rotatably arranged inside the first transmission belt (71); the first bevel gear (72) is fixedly arranged at the end of the first transmission shaft (73); the fourth bevel gear (711) is fixedly arranged In the middle of the main shaft (4), the two third transmission shafts (78) are rotatably arranged on the top of the workbench (15), the third transmission belt (712) is sleeved on the two third transmission shafts (78), the fourth transmission shaft (79) is fixedly arranged on one of the third transmission shafts (78), the third bevel gear (710) is fixedly arranged on the top of the fourth transmission shaft (79), the first mounting plate (77) is fixedly arranged on the inner wall of the housing (9), the second transmission shaft (76) is rotatably arranged on the side wall of the first mounting plate (77), the second bevel gear (74) is fixedly arranged on the end of the second transmission shaft (76), and the second transmission belt (75) is sleeved on the second transmission shaft (76).

5. The blower inlet and outlet noise reduction and vibration damping structure according to claim 4, characterized in that: The lubricating mechanism (5) comprises an oil storage box (51), a sliding plate (52), an oil outlet (53), a connecting shaft (54), an L-shaped rod (55), a limiting rod (56), an engaging ring (57), a reciprocating screw rod (58) and two fixed plates (59), wherein the two fixed plates (59) are fixedly arranged on the inner wall of the housing (9), the reciprocating screw rod (58) is rotatably arranged between the two fixed plates (59), the engaging ring (57) is engaged and sleeved on the outer wall of the reciprocating screw rod (58), and the limiting rod (56) is fixedly arranged on the engaging ring (57). ) outer wall, one end of the limit rod (56) is located on the inner wall of the shell (9) and slides, the connecting shaft (54) is fixedly connected to the end of the reciprocating screw (58), the L-shaped rod (55) is fixedly set on the outer wall of the meshing ring (57), the oil storage box (51) is fixedly set on the inner wall of the shell (9), the sliding plate (52) is slidably set inside the oil storage box (51), the L-shaped rod (55) is fixedly connected to one end of the sliding plate (52), and the two oil outlets (53) are respectively set in the middle of the bottom of the sliding plate (52) and the oil storage box (51).

6. A blower inlet and outlet noise reduction and vibration damping structure according to claim 5, characterized in that: The second transmission belt (75) is in transmission cooperation with the connecting shaft (54).

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