CN114412842B - Noise reduction type centrifugal ventilator - Google Patents
Noise reduction type centrifugal ventilator Download PDFInfo
- Publication number
- CN114412842B CN114412842B CN202210144679.6A CN202210144679A CN114412842B CN 114412842 B CN114412842 B CN 114412842B CN 202210144679 A CN202210144679 A CN 202210144679A CN 114412842 B CN114412842 B CN 114412842B
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- plate
- groove
- rod
- noise reduction
- bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a noise reduction type centrifugal ventilator, wherein a bearing bottom plate is movably provided with a buffer plate, the buffer plate is provided with a mounting seat, and a supporting ball body is arranged between the bearing bottom plate and the buffer plate; the vibration sensors are symmetrically arranged at the bottom end of the buffer plate and used for detecting the vibration frequency of the centrifugal ventilator during operation; the adjusting component comprises a fixing rod, a speed regulating plate and a screw rod, wherein one end of the speed regulating plate is movably arranged on the fixing rod, the screw rod is fixedly arranged at the other end of the speed regulating plate, and the speed regulating plate is made of elastic plates.
Description
Technical Field
The invention belongs to the technical field of centrifugal fans, and particularly relates to a noise reduction type centrifugal fan.
Background
The centrifugal ventilator is a machine which can improve the gas pressure through mechanical energy and then convey the gas out, is widely applied to various fields such as energy, environment, aviation and the like, is auxiliary equipment commonly used in industrial production, the noise generated by the operation of the centrifugal ventilator mainly comprises aerodynamic noise, mechanical noise and gas-solid coupling noise generated by the interaction of gas and a solid elastic system, most of the noise reduction processing of the existing centrifugal ventilator considers the processing mode of mechanical noise reduction, and the noise generated by the operation of the whole equipment cannot be reduced to the maximum extent.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a noise reduction type centrifugal fan.
The invention provides the following technical scheme:
a noise-reducing centrifugal ventilator comprising:
the bearing bottom plate is movably provided with a buffer plate, the buffer plate is provided with a mounting seat, and a bearing ball body is arranged between the bearing bottom plate and the buffer plate;
the vibration sensors are symmetrically arranged at the bottom end of the buffer plate and used for detecting the vibration frequency of the centrifugal ventilator during operation;
the adjusting assembly comprises a fixing rod, a speed adjusting plate and a screw rod, wherein one end of the speed adjusting plate is movably mounted on the fixing rod, the screw rod is fixedly mounted at the other end of the speed adjusting plate, and the speed adjusting plate is made of an elastic plate.
Furthermore, a lower arc-shaped groove is formed in the bearing bottom plate, an upper arc-shaped groove is formed in the buffer plate, a supporting ball body is fixedly mounted in the upper arc-shaped groove, the top of the supporting ball body is located in the upper arc-shaped groove, and the buffer plate is movably connected with the supporting ball body.
Further, the symmetry is equipped with the circular recess on the bearing bottom plate, fixed mounting has the pole setting in the circular recess, be equipped with the shaft hole on the buffer board, the pole setting passes the shaft hole, just the pole setting with shaft hole swing joint, the relative bearing bottom plate vibration of buffer board when the centrifugal fan of being convenient for is worked.
Further, compression spring is installed to pole setting bottom outer lane, compression spring one end is located the circular recess, the compression spring other end is located the buffer board bottom, the shaft hole both sides are equipped with the spacing groove, and the stopper is installed to the symmetry in the pole setting, the stopper is located the spacing inslot, and the stopper both ends all install spacing spring, the spacing spring other end is fixed on the spacing groove cell wall.
Further, the bottom end of the fixing rod is provided with a threaded hole, the top end of the fixing rod is provided with a cylinder groove, the cylinder groove is of an inverted T shape, an electric cylinder is installed in the electric cylinder groove, the top end of the electric cylinder is fixedly installed at one end of the speed regulation plate, the diameter of the top of the screw rod is larger than that of the bottom of the screw rod, and the adjustment assembly is convenient to install and reliable.
Further, install the installation cabinet board on the mount pad, install motor, shaft coupling, bearing box on the installation cabinet board in proper order, bearing box one end is connected with the back plate, install the blade on the back plate, be equipped with air intake and air outlet on the centrifugal fan, be equipped with the amortization lid on the air outlet, the adjustment subassembly is installed the air outlet inner wall with on the amortization lid inner wall, the amortization lid passes through the bolt and is connected with the air outlet.
Further, when the adjusting assembly is installed, the screw penetrates through the air outlet and the silencing cover to screw and fix the screw through the nut, and the other end of the adjusting assembly penetrates through the air outlet and the silencing cover to be in threaded connection with the fixing rod through a T-shaped rod piece which is matched with the threaded hole and provided with external threads.
Further, be equipped with the mounting groove on the installation cabinet board, movable mounting has the motor board in the mounting groove, the motor board with install spring member and spring between the installation cabinet board, the motor is located the motor board, the mounting groove cell wall with the motor board outside is equipped with the rubber spare.
Further, be equipped with the part cabinet body and store up a cabinet on the mount pad, the part cabinet body is used for storing bolt, nut, it is used for storing the adjustment subassembly to store up a cabinet.
The invention has the beneficial effects that:
1. the bearing ball body is arranged between the bearing bottom plate and the buffer plate, the buffer plate takes the bearing ball body as the center, the centrifugal ventilator generates vibration during operation, the vibration sensor detects the vibration frequency of the buffer plate, and the vibration frequency measured by the sensor controls the use of other vibration absorption and noise reduction structures such as the adjusting assembly and the like.
2. The adjusting mechanism is arranged at the air outlet and the silencing cover, so that the noise at the air outlet is reduced.
3. The motor is installed on the installation cabinet board, reduces the vibration that the motor produced through motor board, spring and spring member.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic left side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic view of the adjustment assembly of the present invention;
FIG. 5 is a schematic view of an outlet structure according to the present invention;
FIG. 6 is a schematic view of the air intake of the present invention;
FIG. 7 is a schematic top view of the mounting cabinet panel of the present invention;
fig. 8 is an enlarged view of a portion a in fig. 2 according to the present invention.
Detailed Description
Example one
As shown in fig. 2 and 8, a noise reduction type centrifugal fan, a buffer plate 16 is movably mounted on a bearing base plate 10, a mounting seat 7 is mounted on the buffer plate 16, and a supporting ball 13 is mounted between the bearing base plate 10 and the buffer plate 16; the bearing bottom plate 10 is provided with a lower arc-shaped groove 12, the buffer plate 16 is provided with an upper arc-shaped groove 11, a bearing ball 13 is fixedly arranged in the upper arc-shaped groove 11, the top of the bearing ball 13 is positioned in the upper arc-shaped groove 11, the buffer plate 16 is movably connected with the bearing ball 13, the bearing bottom plate 10 is fixedly connected with the bearing ball 13, and the buffer plate 16 swings by taking the bearing ball 13 as the center due to the vibration generated when the whole machine equipment operates.
The symmetry is equipped with circular recess 31 on bearing bottom plate 10, fixed mounting has pole setting 27 in the circular recess 31, be equipped with shaft hole 25 on the buffer board 16, pole setting 27 passes shaft hole 25, just pole setting 27 with shaft hole 25 swing joint, the relative bearing bottom plate 10 vibration of buffer board 16 when the centrifugal fan during operation of being convenient for.
Because the complete machine equipment is installed on the buffer board 16, the buffer board 16 is movably installed relative to the bearing bottom board 10, in order to ensure the stability of the buffer board 16, install the upright rod 27 between the buffer board 16 and the bearing bottom board 10, the upright rod 27 passes through the shaft hole 25 arranged on the buffer board 16, and the diameter of the shaft hole 25 is greater than the diameter of the upright rod 27, install the purpose of the compression spring 30 between the buffer board 16 and the bearing bottom board 10, be convenient for make the buffer board 16 have the vibration allowance, reduce the vibration of the buffer board 16 through the compression spring 30 simultaneously, reduce the mechanical vibration of the complete machine equipment, in order to achieve the above purpose, install the stopper 29 between the upright rod 27 and the buffer board 16, connect the stopper spring 29 between the stopper 29 and the stopper groove 26.
In order to facilitate accurate measurement of vibration of the centrifugal ventilator during operation, the centrifugal ventilator is installed on the buffer plate 16, vibration of the buffer plate 16 during operation is vibration of the whole equipment during operation, the vibration sensors 8 are symmetrically arranged at the bottom end of the buffer plate 16 and used for detecting vibration frequency of the centrifugal ventilator during operation, and a noise reduction structure is arranged on the centrifugal ventilator according to a value measured by the vibration sensors 8 to achieve the purpose of noise reduction.
Example two
As shown in fig. 1-3 and 5-6, an installation cabinet plate 20 is installed on the installation base 7, a motor 6, a shaft coupler 5 and a bearing box 4 are sequentially installed on the installation cabinet plate 20, one end of the bearing box 4 is connected with a rear disc 3, a blade 2 is installed on the rear disc 3, an air inlet 1 and an air outlet 24 are formed in the centrifugal fan, a silencing cover 23 is arranged on the air outlet 24, an adjusting component 9 is installed on the inner wall of the air outlet 24 and the inner wall of the silencing cover 23, and the silencing cover 23 is connected with the air outlet 24 through bolts.
As shown in fig. 4, the adjusting assembly 9 includes a fixing rod 901, a speed adjusting plate 903 and a screw 906, one end of the speed adjusting plate 903 is movably mounted on the fixing rod 901, the screw 906 is fixedly mounted at the other end of the speed adjusting plate 903, and the speed adjusting plate 903 is made of an elastic plate.
The bottom end of the fixing rod 901 is provided with a threaded hole 905, the top end of the fixing rod 901 is provided with a cylinder groove 904, the cylinder groove 904 is of an inverted T shape, an electric cylinder 902 is installed in the electric cylinder groove 904, the top end of the electric cylinder 902 is fixedly installed at one end of the speed regulation plate 903, and the diameter of the top of the screw 906 is larger than that of the bottom of the screw 906, so that the adjustment assembly 9 can be installed reliably.
When the adjusting assembly 9 is installed, the screw 906 penetrates through the air outlet 24 and the silencing cover 23 to screw and fix the screw 906 through a nut, and the other end of the adjusting assembly 9 penetrates through the air outlet 24 and the silencing cover 23 to be in threaded connection with the fixing rod 901 by using a T-shaped rod with an external thread matched with the threaded hole 905.
At air outlet 24 department and 23 inner wall installation adjustment assembly 9 of amortization lid, adjustment assembly 9's mounted position sets up according to actual conditions evenly distributed, according to the wind speed of air outlet 24 department, the inclination of adjustment speed governing board 903, because speed governing board 903 adopts elastic material to make, screw rod 906 fixed mounting is passed through to speed governing board 903 one end, the height of the other end of speed governing board 903 is adjusted through electric jar 902, adjust the air-out speed of air outlet 24 through speed governing board 903, thereby reach the mesh of making an uproar of falling, and adjustment assembly 9 is convenient for install and dismantle.
EXAMPLE III
As shown in fig. 2, the mounting base 7 is provided with a part cabinet 14 and a storage cabinet 15, the part cabinet 14 is used for storing bolts and nuts, the storage cabinet 15 is used for storing the adjusting assembly 9, the number of the adjusting assembly 9 at the air outlet 24 is determined according to the value measured by the vibration sensor 8, meanwhile, the adjusting assembly 9 is mounted by using nuts and screw type parts, in order to facilitate the collection of the adjusting assembly 9 to be detached, the part cabinet 14 and the storage cabinet 15 are arranged on the mounting base 7, and a partition plate is arranged in the part cabinet 14 to divide the storage space in the part cabinet 14 into two parts, so that the classification and the operation are convenient.
Example four
As shown in fig. 7, the mounting groove 21 is formed in the mounting cabinet plate 20, the motor plate 18 is movably mounted in the mounting groove 21, the spring rod 22 and the spring 19 are mounted between the motor plate 18 and the mounting cabinet plate 20, the motor 6 is located on the motor plate 18, the groove wall of the mounting groove 21 and the outer side of the motor plate 18 are provided with the rubber member 17, in order to further reduce noise generated when the motor 6 is used, a mechanical noise reduction mode is adopted, the motor 6 is fixedly mounted on the motor plate 18, and noise generated when the motor 6 operates is reduced through the spring rod 22 and the spring 19 between the motor plate 18 and the mounting cabinet plate 20.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A noise-reducing centrifugal ventilator comprising:
the bearing device comprises a bearing bottom plate (10), wherein a buffer plate (16) is movably arranged on the bearing bottom plate (10), an installation seat (7) is arranged on the buffer plate (16), and a supporting ball body (13) is arranged between the bearing bottom plate (10) and the buffer plate (16);
the vibration sensors (8) are symmetrically arranged at the bottom end of the buffer plate (16) and used for detecting the vibration frequency of the centrifugal ventilator during operation;
the adjusting assembly (9) comprises a fixing rod (901), a speed regulating plate (903) and a screw rod (906), one end of the speed regulating plate (903) is movably mounted on the fixing rod (901), the screw rod (906) is fixedly mounted at the other end of the speed regulating plate (903), and the speed regulating plate (903) is made of an elastic plate;
install installation cabinet board (20) on mount pad (7), install motor (6), shaft coupling (5), bearing box (4) on installation cabinet board (20) in proper order, bearing box (4) one end is connected with back plate (3), install blade (2) on back plate (3), be equipped with air intake (1) and air outlet (24) on the centrifugal fan, be equipped with amortization lid (23) on air outlet (24), install adjustment subassembly (9) air outlet (24) inner wall with on amortization lid (23) inner wall, amortization lid (23) are connected with air outlet (24) through the bolt.
2. A noise-reducing centrifugal fan according to claim 1, wherein the bottom bearing plate (10) is provided with a lower arc-shaped groove (12), the buffer plate (16) is provided with an upper arc-shaped groove (11), a supporting ball (13) is fixedly arranged in the upper arc-shaped groove (11), the top of the supporting ball (13) is positioned in the upper arc-shaped groove (11), and the buffer plate (16) is movably connected with the supporting ball (13).
3. The noise reduction type centrifugal fan according to claim 2, wherein the bearing bottom plate (10) is symmetrically provided with a circular groove (31), a vertical rod (27) is fixedly installed in the circular groove (31), the buffer plate (16) is provided with a shaft hole (25), the vertical rod (27) penetrates through the shaft hole (25), and the vertical rod (27) and the shaft hole (25) are movably connected, so that the buffer plate (16) vibrates relative to the bearing bottom plate (10) when the centrifugal fan works.
4. The noise reduction type centrifugal ventilator according to claim 3, wherein a compression spring (30) is installed at the outer ring of the bottom of the vertical rod (27), one end of the compression spring (30) is located in the circular groove (31), the other end of the compression spring (30) is located at the bottom end of the buffer plate (16), limiting grooves (26) are formed in two sides of the shaft hole (25), limiting blocks (29) are symmetrically installed on the vertical rod (27), the limiting blocks (29) are located in the limiting grooves (26), limiting springs (28) are installed at two ends of each limiting block (29), and the other end of each limiting spring (28) is fixed on the wall of each limiting groove (26).
5. The noise reduction type centrifugal fan according to claim 1, wherein a threaded hole (905) is formed in the bottom end of the fixing rod (901), a cylinder groove (904) is formed in the top end of the fixing rod (901), the cylinder groove (904) is in an inverted T shape, an electric cylinder (902) is installed in the electric cylinder groove (904), the top end of the electric cylinder (902) is fixedly installed at one end of the speed regulation plate (903), and the diameter of the top of the screw rod (906) is larger than that of the bottom of the screw rod (906), so that the adjustment assembly (9) is installed reliably.
6. The noise reduction type centrifugal ventilator according to claim 5, wherein when the adjusting assembly (9) is installed, the screw (906) penetrates through the air outlet (24), the silencing cover (23) is screwed and fixed to the screw (906) through a nut, and the other end of the adjusting assembly (9) penetrates through the air outlet (24) and the silencing cover (23) to be in threaded connection with the fixing rod (901) by using a T-shaped rod with an external thread matched with the threaded hole (905).
7. The noise reduction type centrifugal ventilator according to claim 1, wherein the mounting cabinet plate (20) is provided with a mounting groove (21), a motor plate (18) is movably mounted in the mounting groove (21), a spring rod member (22) and a spring (19) are mounted between the motor plate (18) and the mounting cabinet plate (20), the motor (6) is located on the motor plate (18), and rubber members (17) are arranged on the wall of the mounting groove (21) and the outer side of the motor plate (18).
8. The noise reduction type centrifugal ventilator according to claim 1, wherein a part cabinet body (14) and a storage cabinet (15) are arranged on the mounting base (7), the part cabinet body (14) is used for storing bolts and nuts, and the storage cabinet (15) is used for storing the adjusting assembly (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144679.6A CN114412842B (en) | 2022-02-16 | 2022-02-16 | Noise reduction type centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144679.6A CN114412842B (en) | 2022-02-16 | 2022-02-16 | Noise reduction type centrifugal ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412842A CN114412842A (en) | 2022-04-29 |
| CN114412842B true CN114412842B (en) | 2023-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210144679.6A Active CN114412842B (en) | 2022-02-16 | 2022-02-16 | Noise reduction type centrifugal ventilator |
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| Country | Link |
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| CN (1) | CN114412842B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044708B (en) * | 2014-06-09 | 2016-07-06 | 姜立平 | Hull subtracts and shakes cabin |
| US10895266B2 (en) * | 2017-09-07 | 2021-01-19 | Regal Beloit America, Inc. | Centrifugal blower assembly and method for assembling the same |
| CN209908797U (en) * | 2019-02-19 | 2020-01-07 | 苏州众志新环冷却设备有限公司 | Angle-adjustable axial flow fan |
| CN212272649U (en) * | 2020-03-30 | 2021-01-01 | 孙修波 | Be applied to exhaust-gas treatment induced draft fan's noise elimination noise reducer |
| CN111472985B (en) * | 2020-04-27 | 2021-04-09 | 江苏优格曼航空科技有限公司 | Vibration/noise reduction's centrifugal fan |
| CN213298355U (en) * | 2020-09-15 | 2021-05-28 | 苏州瑞得来工业科技有限公司 | Fan work function test machine |
| CN214273972U (en) * | 2020-12-10 | 2021-09-24 | 红塔烟草(集团)有限责任公司 | Straight plate backward-inclined centrifugal fan suitable for automatic numerical control material drying |
| CN214833501U (en) * | 2021-07-13 | 2021-11-23 | 中建新疆建工（集团）有限公司 | A shaped steel structure that takes precautions against earthquakes for commodity circulation factory building |
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| CN114412842A (en) | 2022-04-29 |
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