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CN-122014692-A - Magnetic suspension fan with noise reduction device

CN122014692ACN 122014692 ACN122014692 ACN 122014692ACN-122014692-A

Abstract

The invention discloses a magnetic suspension fan with a noise reduction device, which is applied to the field of non-positive displacement pumps, and the magnetic suspension fan with the noise reduction device is used for absorbing dust in air inlet through a rectangular box filled with water, so that noise generated when air flow contacts an impeller and a volute is reduced, and meanwhile, the corrosion of the dust to the impeller is reduced, and the problems of complicated maintenance and high energy consumption of the noise reduction and dust removal device in the prior art are solved; in addition, through the liftable sound-proof housing, noise is integrally isolated on the premise of not influencing the disassembly and maintenance of equipment, the inner cavity of the sound-proof housing is divided into two cavities with communicated end parts by utilizing the bearing plate provided with the sealing strips, the path length of noise sound wave transmitted to the external environment is increased, the sound wave kinetic energy is fully consumed by utilizing the inner cavity of the sound-proof housing, and the noise reduction effect is improved; in addition, through setting up acoustic hood and horizontal acoustic baffle in the intake pipe outside to and set up the vertical acoustic baffle in rectangle clearance one side, carry out the multi-angle to noise sound wave and absorb, further improve noise reduction.

Inventors

  • WU QINGSONG
  • ZHANG XUESEN
  • ZHU JIAQI

Assignees

  • 和旺磁悬浮科技(沈阳)有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (10)

  1. 1. The magnetic suspension fan with the noise reduction device is characterized by comprising a base (1), wherein a sound-proof housing (2) is clamped at the upper end of the base (1), a sealing ring I (3) is fixedly connected at the clamping part of the base (1) and the sound-proof housing (2), a bearing plate (5) is arranged in the sound-proof housing (2), a rectangular gap for air supply flow to flow is formed between the bearing plate (5) and the inner wall of one side of the sound-proof housing (2), the lower end of the bearing plate (5) is fixedly connected with the base (1) through a plurality of support rods (6), a magnetic suspension motor (7) is fixedly connected onto the bearing plate (5), a volute (8) is fixedly connected with a shell of the magnetic suspension motor (7), an impeller fixedly connected with the output end of the magnetic suspension motor (7) is arranged in the volute (8), the front end of the volute (8) is fixedly connected with an air inlet pipe (9), and the upper end of the volute (8) is fixedly connected with an exhaust pipe (10); The dust removal device is characterized in that a dust removal mechanism (11) is arranged below the bearing plate (5), the dust removal mechanism (11) comprises a rectangular box (12) fixedly connected with the base (1), a U-shaped cavity (1201) is formed in the rectangular box (12), the right end of the rectangular box (12) is fixedly connected with an air inlet cover (13), the air inlet cover (13) is communicated with the right end of the U-shaped cavity (1201), the right end of the air inlet cover (13) is fixedly connected with a sealing ring II (14), the sealing ring II (14) is abutted against the inner wall of the sound-proof housing (2), a grid plate (15) is fixedly connected with the position of the sound-proof housing (2) abutted against the sealing ring II, external air enters into the air inlet cover (13) through the grid plate (15), the left inner wall of the U-shaped cavity (1201) is fixedly connected with a demister (20), an air outlet (1202) communicated with the U-shaped cavity (1201) is formed in the left side wall of the rectangular box, the middle of the U-shaped cavity (1201) is fixedly connected with a plurality of linear equidistant rectangular guide strips (1203), and the water level guide strips (1203) are filled in the rectangular cavity and the water level is higher than the water level of the dust guide strips (1203) and used for adsorbing the dust.
  2. 2. The magnetic suspension fan with the noise reduction device according to claim 1, wherein the U-shaped cavity (1201) is fixedly communicated with a water outlet end of a water pump (16) through a pipeline, a shell of the water pump (16) is fixedly connected with a base (1), a water inlet end of the water pump (16) is communicated with an external water source, a drain pipe (17) is fixedly communicated with the lower end of the rectangular box (12), the drain pipe (17) penetrates through the base (1), an electromagnetic valve (18) is fixedly connected to the drain pipe (17), an infrared liquid level sensor (19) is fixedly connected to the inner wall of the U-shaped cavity (1201), and the water pump (16), the electromagnetic valve (18) and the infrared liquid level sensor (19) are electrically connected with the same controller.
  3. 3. The magnetic suspension fan with the noise reduction device according to claim 1, wherein the sound-proof housing (2) is a hollow box structure with an opening at the lower end, the first sealing ring (3) is fixed on the inner wall of the first vertical protruding ring (101) and fixedly connected with the horizontal protruding ring (202) at the lower end of the sound-proof housing (2), and the lower end face of the horizontal protruding ring (202) is abutted with the upper end face of the first sealing ring (3).
  4. 4. The magnetic suspension fan with the noise reduction device according to claim 1, wherein the sound insulation cover (2) is made of one of a steel plate and a lead plate, and the first sealing ring (3) and the second sealing ring (14) are made of rubber materials.
  5. 5. The magnetic suspension fan with the noise reduction device according to claim 1, characterized in that the sound-proof housing (2) is connected with a lifting mechanism (4) for driving the sound-proof housing to move up and down, the lifting mechanism (4) comprises a sliding block (21) fixedly connected with the outer wall of the sound-proof housing (2), the sliding block (21) is slidably connected with a sliding chute frame (22), the lower end of the sliding chute frame (22) is fixedly connected with a screw rod (23) in a rotating manner, the screw rod (23) is in threaded connection with the sliding block (21), the lower part of the screw rod (23) is fixedly connected with a worm wheel (24), the worm wheel (24) is meshed with a worm (25), the worm (25) extends to the outer side of the sliding chute frame (22) and is fixedly connected with a hand crank wheel (26), and the worm (25) is in rotating connection with the sliding chute frame (22).
  6. 6. The magnetic suspension fan with the noise reduction device according to claim 1, wherein one end of the exhaust pipe (10) away from the volute (8) is provided with a first flange, a third sealing ring is fixed at the joint of the first flange and the inner wall of the sound-proof housing (2), a through hole communicated with the exhaust pipe (10) is formed in the outer wall of the sound-proof housing (2), an external pipe (35) fixedly connected with the sound-proof housing (2) is arranged at the outer side of the through hole, a second flange is arranged at the joint of the external pipe (35) and the outer wall of the sound-proof housing (2), the first flange is connected with the second flange through a fastening bolt, an air inlet groove (201) for fixing a grid plate (15) is formed in the sound-proof housing (2), and a plurality of rectangular through grooves are formed in the grid plate (15).
  7. 7. The magnetic suspension fan with the noise reduction device according to claim 1, characterized in that the upper end of the supporting rod (6) is slidably sleeved with a cylinder (28) penetrating through the supporting plate (5), the cylinder (28) and the supporting plate (5) are integrally formed, a fixing bolt (29) penetrating through the supporting plate (5) is arranged in the cylinder (28), the lower end of the fixing bolt (29) is in threaded connection with the upper end of the supporting rod (6), the upper end face and the lower end face of the supporting plate (5) are respectively abutted with a rubber ring (30) sleeved on the fixing bolt (29), the upper end of the rubber ring (30) above is abutted with the bolt head of the fixing bolt (29), and the lower end of the rubber ring (30) below is abutted with the upper end face of the supporting rod (6).
  8. 8. The magnetic suspension fan with the noise reduction device according to claim 1, wherein a sealing strip (27) is fixedly connected to the circumferential side wall of the bearing plate (5), the outer wall of the sealing strip (27) is abutted against the inner wall of the sound insulation cover (2), and the sealing strip (27) is of a U-shaped structure.
  9. 9. The magnetic suspension fan with the noise reduction device according to claim 8, wherein a sound absorbing cover (31) fixedly connected with the inner wall of the sound insulating cover (2) is arranged above the air inlet pipe (9), the lower end of the sound absorbing cover (31) is abutted with a horizontal sound absorbing plate (32) fixedly connected with the bearing plate (5), and the horizontal sound absorbing plate (32) and the sound absorbing cover (31) are enclosed to form a rectangular cover with one end open.
  10. 10. A magnetic levitation fan with noise reduction device according to claim 9, wherein a vertical sound absorbing plate (33) is fixedly connected to the inner wall of one side of the sound-proof housing (2) opposite to the sound absorbing housing (31), and the vertical sound absorbing plate (33) completely covers the inner wall of the one side of the sound-proof housing (2).

Description

Magnetic suspension fan with noise reduction device Technical Field The invention relates to the field of non-positive displacement pumps, in particular to a magnetic suspension fan with a noise reduction device. Background In the prior art, the fan adopting the magnetic suspension motor effectively reduces noise generated by mechanical friction due to the characteristic of no mechanical contact, and the operation noise mainly comes from aerodynamic noise, namely turbulent noise generated by the interaction of air flow with the surfaces of the volute and the impeller, however, in the practical application scene, when the air conveyed by the fan contains dust particles, the extra noise problem is caused. In order to solve the problem, a filter screen is usually adopted for front dust removal, but the scheme has inherent contradiction that if a filter screen with high filtering precision (namely smaller filter holes) is adopted, the dust removal requirement can be met, but the ventilation resistance of a system is obviously increased, the air inlet quantity is limited, the filter screen is easy to block and needs frequent maintenance and replacement, if a filter screen with low filtering precision (namely larger filter holes) is adopted, the ventilation resistance can be reduced, the maintenance frequency can be reduced, but a large amount of dust penetrates the filter screen to enter a fan runner, and the dust is wrapped by high-speed air flow, so that the impact and turbulence with parts such as impellers, volutes and the like are increased, and larger aerodynamic noise is generated. The prior patent application with the publication number of CN108252965A discloses a magnetic suspension blower air inlet filter device with a silencing effect, and the air inlet filter device with a multi-stage filter module is arranged on an air inlet side plate of a magnetic suspension blower sled installation cabinet, so that foreign matters such as catkin and the like are blocked by a blocking net when the device is used for air inlet, a hairbrush is convenient to clean, dust is efficiently adsorbed and noise is reduced by a high-voltage electric separation plate and an electrostatic adsorption and silencing assembly, and finally, the foreign matters are effectively intercepted, the dust is deeply purified and the operation is reduced without frequent replacement of a filter element by deep filtration of coarse and fine filtration filters. The patent of the prior publication number CN223306024U discloses a magnetic suspension blower noise reduction sealing device, through setting up seal housing in the rack to installation magnetic suspension blower and a plurality of closing plate in seal housing forms a plurality of sealed spaces, and the assembly contains the first amortization board of making an uproar that falls side by side on seal housing simultaneously, corresponds the amortization structure that admits air of second amortization board and amortization passageway, makes gas get into through "NON" style of calligraphy inlet channel, and effective separation high-speed gas gets into inside the motor, realizes the apparent promotion of the noise reduction effect of magnetic suspension blower operation in-process. The prior art discloses the technical scheme that utilizes block and static adsorption plate to realize multistage filtration, still discloses the technical scheme that utilizes a plurality of seal plates to constitute a plurality of sound attenuation structures and improve noise reduction effect, however, prior art still exists not enough, and traditional dust filtration mode relies on filter screen or static adsorption equipment, needs frequent maintenance or consumes more electric energy. Disclosure of Invention The invention has the core that the problems that the noise reduction and dust removal device in the prior art needs frequent maintenance and increases energy consumption are solved through the dust removal mechanism filled with water, and meanwhile, the kinetic energy of noise waves is fully consumed through the bearing plate and the sound absorption cover, and the noise is actively absorbed, so that the working noise is further reduced. In order to solve the problems, the invention adopts the following technical scheme. A magnetic suspension fan with a noise reduction device comprises a base, wherein the upper end of the base is clamped with a sound-proof cover, a first sealing ring is fixedly connected to the clamping part of the base and the sound-proof cover, a bearing plate is arranged in the sound-proof cover, a rectangular gap for air flow is formed between the bearing plate and the inner wall of one side of the sound-proof cover, and the lower end of the bearing plate is fixedly connected with the base through a plurality of support rods; The dust removing mechanism comprises a rectangular box fixedly connected with a base, a U-shaped cavity is formed in the rectangular box, the right end