CN115111203B - Noise reduction structure and noise reduction method for high-speed centrifugal blower - Google Patents
Noise reduction structure and noise reduction method for high-speed centrifugal blower Download PDFInfo
- Publication number
- CN115111203B CN115111203B CN202210692362.6A CN202210692362A CN115111203B CN 115111203 B CN115111203 B CN 115111203B CN 202210692362 A CN202210692362 A CN 202210692362A CN 115111203 B CN115111203 B CN 115111203B
- Authority
- CN
- China
- Prior art keywords
- rectangular cover
- rectangular
- noise reduction
- centrifugal blower
- shaped frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims abstract description 11
- 229920000742 Cotton Polymers 0.000 claims abstract description 9
- 230000035939 shock Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a noise reduction structure of a high-speed centrifugal blower, which belongs to the technical field of centrifugal blowers and comprises a base, wherein a strip-shaped plate is symmetrically fixed at the front and rear of the upper end of the base, slots are formed in the strip-shaped plate, the centrifugal blower is arranged above the base, supporting legs are arranged on four sides of the centrifugal blower, a rectangular cover is arranged on the outer side of the centrifugal blower, grooves and rectangular grooves are formed in the front wall and the rear wall of the rectangular cover, a heat dissipation and sound absorption mechanism is arranged in the rectangular groove, supporting plates are symmetrically fixed at the front and rear of the rectangular cover, and clamping limiting mechanisms are symmetrically arranged on the rectangular cover; the sound insulation type centrifugal fan is provided with the rectangular cover to enhance sound insulation, the air is introduced into and discharged from the air inlet and the air outlet, heat is radiated through the rectangular grooves, the movable rotating plate can be driven to rotate to adjust heat radiation, and sound-absorbing cotton is arranged on the movable rotating plate for noise reduction, so that the positions of the rectangular cover and the centrifugal fan are fixed, the rectangular cover is convenient to detach, and the centrifugal fan can be maintained.
Description
Technical Field
The invention relates to the technical field of centrifugal blowers, in particular to a noise reduction structure and a noise reduction method of a high-speed centrifugal blower.
Background
The centrifugal blower is a machine for raising the pressure of gas and discharging the gas by means of input mechanical energy, and is a driven fluid machine. According to the principle that kinetic energy is converted into potential energy, the gas is accelerated by utilizing the impeller rotating at high speed, and then the flow direction is decelerated and changed, so that the kinetic energy is converted into potential energy. The centrifugal blower is widely applied to water treatment engineering such as urban sewage, industrial wastewater and the like, and industries and departments such as metallurgy, chemical industry, aquaculture, pneumatic conveying, mine flotation and the like, and is used for conveying air or other non-toxic and non-corrosive gases. The device can also be used for ventilation and induced air of boilers and industrial kilns, cooling and ventilation in air conditioning equipment and household electrical appliances, and drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc.
The centrifugal blower can produce the noise during operation, and the noise is a great pollution, brings great influence to workman and resident on every side, consequently needs to design a structure of making an uproar to the centrifugal blower, and traditional structure of making an uproar that makes an uproar is fixed, can realize the protection of making an uproar, but is inconvenient for the heat dissipation, inconvenient dismantlement maintenance of making an uproar.
Therefore, there is a need to design a noise reduction structure of a high-speed centrifugal blower and a noise reduction method thereof.
Disclosure of Invention
The invention aims to provide a noise reduction structure of a high-speed centrifugal blower and a noise reduction method thereof, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a structure of making an uproar falls in high-speed centrifugal blower, includes the base, the upper end front and back symmetry of base is fixed with the strip shaped plate, the slot has been seted up on the strip shaped plate, the top of base is provided with centrifugal blower, centrifugal blower's four sides all are provided with the stabilizer blade, be connected with air-supply line and play tuber pipe on the centrifugal blower, centrifugal blower's the outside is provided with the rectangle cover, air-supply line and play tuber pipe all run through the rectangle cover outward, recess, rectangle groove have all been seted up to the front and back wall of rectangle cover, be provided with heat dissipation sound absorption mechanism in the rectangle groove, the front and back symmetry of rectangle cover is fixed with the backup pad, the symmetry is provided with centre gripping stop gear on the rectangle cover.
Further, in the high-speed centrifugal blower noise reduction structure, the heat dissipation and sound absorption mechanism comprises a plurality of movable rotating plates, a short shaft, a rotating motor and sound absorption cotton, wherein the movable rotating plates are arranged in the rectangular grooves, the short shaft is fixed at the top ends of the movable rotating plates, the top ends of the short shaft penetrate through and extend into the grooves, the top ends of the short shaft) are connected with an output shaft of the rotating motor, and the rotating motor is arranged in the grooves.
Further, in the high-speed centrifugal blower noise reduction structure, the clamping limiting mechanism comprises a screw rod, a U-shaped frame, a plugboard, a connecting shaft, a positioning gear and a clamping rod, the screw rod is rotationally arranged on the rectangular cover, the U-shaped frame is sleeved on the outer side of the screw rod, two ends of the U-shaped frame extend inwards through the rectangular cover, a plurality of convex teeth are symmetrically fixed at the inner ends of side rods of the U-shaped frame, the positioning gear is arranged on the left side and the right side of the side rods of the U-shaped frame, the connecting shaft is fixedly connected onto the positioning gear in an inserting mode, the bottom end of the connecting shaft is rotationally arranged on the supporting plate, the clamping rod is fixedly arranged at the top end of the connecting shaft, and the plugboard is fixedly arranged at the lower portion of the rear end of the U-shaped frame.
Further, in the noise reduction structure of the high-speed centrifugal blower, an air inlet is formed in the left side of the air inlet pipe, and an air outlet is formed in the right side of the air outlet pipe.
Furthermore, in the noise reduction structure of the high-speed centrifugal blower, the air inlet pipe and the air outlet pipe are both in sliding contact with the rectangular cover top plate.
Furthermore, in the noise reduction structure of the high-speed centrifugal blower, the plugboard is connected with the slot in a clamping mode.
Further, in the high-speed centrifugal blower noise reduction structure, a shock pad is arranged at the bottom end of the base.
The noise reduction method of the noise reduction structure of the high-speed centrifugal blower is characterized by comprising the following steps of:
S1: when the centrifugal blower works, the rectangular cover is arranged to enhance sound insulation, air is introduced and discharged through the air inlet and the air outlet, and heat is dissipated through the rectangular groove;
S2: starting a rotating motor to drive a short shaft to rotate, driving a movable rotating plate to rotate, adjusting heat dissipation, and arranging sound-absorbing cotton on the movable rotating plate for noise reduction;
S3: the manual adjusting screw rod rotates to adjust the position of the U-shaped frame to move backwards, so that the positioning gears on two sides can be driven to rotate, and the supporting legs are clamped and fixed by the clamping rods on two sides; when the position of the U-shaped frame is adjusted to move backwards, the position of the inserting plate can be driven to move backwards, so that the inserting plate moves into the slot to be clamped with the slot, and the positions of the rectangular cover and the centrifugal blower are fixed.
Compared with the prior art, the invention has the beneficial effects that:
1. the rectangular cover is arranged to enhance sound insulation, air is introduced into the air inlet and the air outlet, and heat is dissipated through the rectangular groove; can drive the movable rotating plate to rotate, adjust the heat dissipation, and be provided with on the movable rotating plate and inhale the sound cotton for fall the noise.
2. According to the invention, the clamping rods on two sides are used for clamping and fixing the corresponding support legs, and when the position of the U-shaped frame is adjusted to move backwards, the position of the plugboard can be driven to move backwards, so that the plugboard moves into the slot to be clamped with the slot, the fixing of the positions of the rectangular cover and the centrifugal blower is realized, the rectangular cover is convenient to detach, and the centrifugal blower can be maintained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic diagram of a distribution structure of a clamping and limiting mechanism according to the present invention;
FIG. 4 is a schematic view of a clamping and limiting mechanism according to the present invention;
FIG. 5 is a schematic view of a partial structure of a strip plate according to the present invention;
In the drawings, the list of components represented by the various numbers is as follows:
The device comprises a 1-base, a 2-rectangular cover, a 3-centrifugal blower, 4-support legs, 5-air outlet pipes, 6-air outlet pipes, 7-air inlet pipes, 8-air inlets, 9-rectangular grooves, 10-heat dissipation and sound absorption mechanisms, 101-movable rotating plates, 102-short shafts, 104-rotating motors, 105-sound absorption cotton, 11-grooves, 13-strip plates, 14-slots, 15-clamping and limiting mechanisms, 151-screws, 152-U-shaped frames, 153-plugboards, 154-connecting shafts, 155-positioning gears, 156-clamping rods and 16-supporting plates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a technical scheme that: the utility model provides a high-speed centrifugal blower noise reduction structure, including base 1, the upper end front and back symmetry of base 1 is fixed with strip shaped plate 13, slot 14 has been seted up on the strip shaped plate 13, the top of base 1 is provided with centrifugal blower 3, centrifugal blower 3's four sides all are provided with stabilizer blade 4, be connected with air-supply line 7 and air-out pipe 5 on the centrifugal blower 3, air intake 8 has been seted up in the left side of air-supply line 7, air outlet 6 has been seted up on the right side of air-out pipe 5, air-supply line 7 and air-out pipe 5 all with rectangular housing 2 roof sliding contact, the outside of centrifugal blower 3 is provided with rectangular housing 2, air-supply line 7 and air-out pipe 5 all run through rectangular housing 2 and outwards extend, recess 11, rectangular slot 9 have all been seted up to rectangular housing 2's front and back wall, be provided with heat dissipation sound absorbing mechanism 10 in the rectangular slot 9, rectangular housing 2's front and back symmetry is fixed with backup pad 16, rectangular housing 2 is last symmetry and is provided with centre gripping stop gear 15. The bottom of base 1 is provided with the shock pad.
Example two
Based on the first embodiment of the application, the second embodiment of the application provides a noise reduction structure and a noise reduction method for a high-speed centrifugal blower. The second embodiment is merely a further way of implementing the first embodiment, and implementation of the second embodiment does not affect implementation of the first embodiment alone.
The second embodiment of the present invention will be further described with reference to the drawings and the embodiments.
Compared with the first embodiment, the specific heat dissipation and sound absorption mechanism 10 provided in this embodiment includes a plurality of movable rotating plates 101, a short shaft 102, a rotating motor 104 and sound absorption cotton 105, the movable rotating plates 101 are disposed in the rectangular grooves 9, the short shaft 102 is fixed at the top ends of the movable rotating plates 101, the top ends of the short shaft 102 extend into the grooves 11 in a penetrating manner, the top ends of the short shaft 102 are connected with the output shaft of the rotating motor 104, and the rotating motor 104 is mounted in the grooves 11.
Example III
Based on the first embodiment of the application, the first embodiment of the application provides a noise reduction structure of a high-speed centrifugal blower and a noise reduction method thereof, and the third embodiment of the application provides another noise reduction structure of a high-speed centrifugal blower and a noise reduction method thereof. Embodiment three is merely a further way of implementing embodiment one, and implementation of embodiment three does not affect implementation of embodiment one alone.
An embodiment of the present invention will be further described with reference to the drawings and embodiments.
Compared with the first embodiment, the specific clamping and limiting mechanism 15 provided in this embodiment includes a screw 151, a U-shaped frame 152, a plugboard 153, a connecting shaft 154, a positioning gear 155 and a clamping rod 156, the screw 151 is rotatably arranged on the rectangular cover 2, the U-shaped frame 152 is sleeved outside the screw 151, both ends of the U-shaped frame 152 extend inwards through the rectangular cover 2, a plurality of convex teeth are symmetrically fixed at inner ends of side rods of the U-shaped frame 152, positioning gears 155 are respectively arranged at left and right sides of the side rods of the U-shaped frame 152, a connecting shaft 154 is fixedly connected to the positioning gear 155 in a plugging manner, the bottom end of the connecting shaft 154 is rotatably arranged on the supporting plate 16, the top end of the connecting shaft 154 is fixedly provided with the clamping rod 156, the plugboard 153 is fixed at the lower part of the rear end of the U-shaped frame 152, and the plugboard 153 is clamped with the slot 14.
The working principle is as follows: when the centrifugal blower 3 works, the rectangular cover 2 is arranged to enhance sound insulation, air is introduced and discharged through the air inlet 8 and the air outlet 6, and heat is dissipated through the rectangular groove 9; the rotary motor 104 is started to drive the short shaft 102 to rotate to drive the movable rotating plate 101 to rotate to adjust heat dissipation, and sound-absorbing cotton 105 is arranged on the movable rotating plate 101 for noise reduction; the manual adjusting screw 151 rotates to adjust the position of the U-shaped frame 152 to move backwards, so that the positioning gears 155 on two sides can be driven to rotate, and the supporting legs 4 are clamped and fixed by the clamping rods 156 on two sides; when the position of the U-shaped frame 152 is adjusted to move backwards, the position of the inserting plate 153 can be driven to move backwards, so that the inserting plate 153 moves into the slot 14 to be clamped with the inserting plate, the fixing of the positions of the rectangular cover 2 and the centrifugal blower 3 is realized, the rectangular cover is convenient to detach, and the centrifugal blower can be maintained.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. The utility model provides a centrifugal blower noise reduction structure, includes base (1), its characterized in that: the novel centrifugal fan comprises a base (1), wherein a strip-shaped plate (13) is symmetrically fixed on the upper end of the base (1) front and back, slots (14) are formed in the strip-shaped plate (13), a centrifugal fan (3) is arranged above the base (1), supporting legs (4) are arranged on four sides of the centrifugal fan (3), an air inlet pipe (7) and an air outlet pipe (5) are connected to the centrifugal fan (3), a rectangular cover (2) is arranged on the outer side of the centrifugal fan (3), the air inlet pipe (7) and the air outlet pipe (5) extend outwards through the rectangular cover (2), grooves (11) and rectangular grooves (9) are formed in the front wall and the rear wall of the rectangular cover (2), a heat dissipation and sound absorption mechanism (10) is arranged in the rectangular grooves (9), supporting plates (16) are symmetrically fixed on the front and the rear of the rectangular cover (2), and clamping limiting mechanisms (15) are symmetrically arranged on the rectangular cover (2).
The heat dissipation sound absorption mechanism (10) comprises a plurality of movable rotating plates (101), a short shaft (102), a rotating motor (104) and sound absorption cotton (105), wherein the movable rotating plates (101) are arranged in the rectangular grooves (9), the short shaft (102) is fixed at the top ends of the movable rotating plates (101), the top ends of the short shafts (102) penetrate through and extend into the grooves (11), the top ends of the short shafts (102) are connected with an output shaft of the rotating motor (104), the rotating motor (104) is arranged in the grooves (11), and the sound absorption cotton (105) is arranged on the movable rotating plates (101);
The clamping limiting mechanism (15) comprises a screw rod (151), a U-shaped frame (152), an inserting plate (153), a connecting shaft (154), a positioning gear (155) and a clamping rod (156), wherein the screw rod (151) is rotatably arranged on the rectangular cover (2), the U-shaped frame (152) is sleeved outside the screw rod (151), two ends of the U-shaped frame (152) extend inwards through the rectangular cover (2), a plurality of convex teeth are symmetrically fixed at the inner ends of side rods of the U-shaped frame (152), positioning gears (155) are respectively arranged at the left side and the right side of the side rods of the U-shaped frame (152), the connecting shaft (154) is fixedly connected onto the positioning gears (155) in an inserting mode, the bottom end of the connecting shaft (154) is rotatably arranged on the supporting plate (16), the clamping rod (156) is fixedly arranged at the top end of the connecting shaft (154), and the inserting plate (153) is fixedly arranged at the lower part of the rear end of the U-shaped frame (152).
The manual adjusting screw rod (151) rotates to adjust the position of the U-shaped frame (152) to move backwards, so that the positioning gears (155) at the two sides are driven to rotate, and the supporting legs (4) are clamped and fixed by the clamping rods (156) at the two sides; when the position of the U-shaped frame (152) is adjusted to move backwards, the position of the plugboard (153) is driven to move backwards, so that the plugboard (153) moves into the slot (14) to be clamped with the slot.
2. A centrifugal blower noise reduction structure according to claim 1, wherein: an air inlet (8) is formed in the left side of the air inlet pipe (7), and an air outlet (6) is formed in the right side of the air outlet pipe (5).
3. A centrifugal blower noise reduction structure according to claim 1, wherein: the air inlet pipe (7) and the air outlet pipe (5) are in sliding contact with the top plate of the rectangular cover (2).
4. A centrifugal blower noise reduction structure according to claim 1, wherein: the bottom of base (1) is provided with the shock pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210692362.6A CN115111203B (en) | 2022-06-17 | Noise reduction structure and noise reduction method for high-speed centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210692362.6A CN115111203B (en) | 2022-06-17 | Noise reduction structure and noise reduction method for high-speed centrifugal blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115111203A CN115111203A (en) | 2022-09-27 |
| CN115111203B true CN115111203B (en) | 2024-05-31 |
Family
ID=
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200377618Y1 (en) * | 2004-12-20 | 2005-03-14 | 신한건설산업(주) | Silencer of ventilation for noise economy |
| CN210240081U (en) * | 2019-05-27 | 2020-04-03 | 浙江树人学院（浙江树人大学） | Combined support frame for peripheral pump of robot |
| CN211230995U (en) * | 2019-11-27 | 2020-08-11 | 南通普瑞特透平科技有限公司 | Magnetic suspension high-speed centrifugal blower |
| CN214660961U (en) * | 2021-01-22 | 2021-11-09 | 广州市圣南通风设备有限公司 | Cabinet type centrifugal fan |
| CN215980016U (en) * | 2021-09-06 | 2022-03-08 | 山东兴恒环境科技集团有限公司 | Long service life's type of making an uproar centrifugal fan falls |
| CN216342866U (en) * | 2021-09-14 | 2022-04-19 | 云南丰煌工程有限公司 | Underground water taking device for engineering investigation drilling |
| CN216381913U (en) * | 2021-09-10 | 2022-04-26 | 宿州市尚泰电子科技有限公司 | Brushless direct current blower |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200377618Y1 (en) * | 2004-12-20 | 2005-03-14 | 신한건설산업(주) | Silencer of ventilation for noise economy |
| CN210240081U (en) * | 2019-05-27 | 2020-04-03 | 浙江树人学院（浙江树人大学） | Combined support frame for peripheral pump of robot |
| CN211230995U (en) * | 2019-11-27 | 2020-08-11 | 南通普瑞特透平科技有限公司 | Magnetic suspension high-speed centrifugal blower |
| CN214660961U (en) * | 2021-01-22 | 2021-11-09 | 广州市圣南通风设备有限公司 | Cabinet type centrifugal fan |
| CN215980016U (en) * | 2021-09-06 | 2022-03-08 | 山东兴恒环境科技集团有限公司 | Long service life's type of making an uproar centrifugal fan falls |
| CN216381913U (en) * | 2021-09-10 | 2022-04-26 | 宿州市尚泰电子科技有限公司 | Brushless direct current blower |
| CN216342866U (en) * | 2021-09-14 | 2022-04-19 | 云南丰煌工程有限公司 | Underground water taking device for engineering investigation drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115111203B (en) | Noise reduction structure and noise reduction method for high-speed centrifugal blower | |
| CN213655169U (en) | Low-noise fan | |
| CN214617126U (en) | Centrifugal draught fan for boiler | |
| CN112576547A (en) | Pressurization and exhaust device of gas drainage fan | |
| CN212508887U (en) | Low-noise high-speed centrifugal fan | |
| CN213574741U (en) | Special sealing blade fan for anti-leakage and anti-vortex dust removal fan impeller | |
| CN115111203A (en) | Noise reduction structure and noise reduction method of high-speed centrifugal blower | |
| CN211174709U (en) | Industrial fan connecting and driving device | |
| CN209115374U (en) | A kind of double air inlet box-type centrifugal fans for the backswept impeller that air quantity is big, pressure is high | |
| CN108126437B (en) | Shutter type water film dust remover | |
| CN219197733U (en) | Assembled fan | |
| CN219243627U (en) | Boiler induced draft fan convenient for blade cleaning for thermodynamic engineering | |
| CN216199146U (en) | Air duct structure of centrifugal fan | |
| CN215566865U (en) | Low-noise fan for metallurgical processing | |
| CN219262732U (en) | Fan with noise reduction function | |
| CN219197655U (en) | Ventilation purification fan with filtering equipment | |
| CN213064014U (en) | High-efficient high-pressure centrifugal fan | |
| CN212672095U (en) | Low-noise duplex centrifugal fan | |
| CN215633847U (en) | Dustproof centrifugal fan convenient to clean | |
| CN214945291U (en) | XBDZ square wall type fan | |
| CN216665959U (en) | High-efficient centrifugal fan is used to ventilation dust pelletizing system | |
| CN216008980U (en) | Laminar flow fan for food production | |
| CN220435050U (en) | High-efficient low noise fan | |
| CN215762304U (en) | Noise-reduction type large-air-volume centrifugal fan | |
| CN214092447U (en) | Fan control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |