CN108999924B - General centrifugal fan shock absorber - Google Patents
General centrifugal fan shock absorber Download PDFInfo
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- CN108999924B CN108999924B CN201811050155.0A CN201811050155A CN108999924B CN 108999924 B CN108999924 B CN 108999924B CN 201811050155 A CN201811050155 A CN 201811050155A CN 108999924 B CN108999924 B CN 108999924B
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- mounting plate
- movable plug
- fan
- damping mechanism
- shock absorbing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a general centrifugal fan shock absorber which comprises a first mounting plate, a second mounting plate, a shock absorption mechanism and a shock absorption mechanism, wherein the first mounting plate is used for mounting a fan; the second mounting plate is positioned at the lower part of the first mounting plate; the damping mechanism is of an elastic deformation and internal hollow structure, and two ends of the damping mechanism are respectively abutted against the first mounting plate and the second mounting plate; two ends of the shock absorption mechanism are respectively connected with two adjacent shock absorption mechanisms; when the first mounting panel is because of when the fan work produces vibrations, right damper extrudees, thereby makes thereby the inside atmospheric pressure of damper increases and forms high-pressure gas, and high-pressure gas can be along with damper flows to adjacent damper, and then realizes high-pressure gas hedging phenomenon, and then reaches the effect of moving away to avoid possible earthquakes.
Description
Technical Field
The invention belongs to the field of fans, and particularly relates to a general centrifugal fan shock absorber.
Background
A centrifugal general fan (hereinafter referred to as a fan) is a machine that increases gas pressure and discharges gas by means of input mechanical energy, and is widely used for ventilation, dust discharge, cooling, and the like of factories, mines, tunnels, cooling towers, vehicles, ships, and buildings. But the fan can produce the noise in service simultaneously, and this noise not only disturbs people's normal rest, endangers producer's physical and mental health, still can destroy building and instrument and equipment simultaneously. Therefore, as one of important contents for improving labor conditions and protecting the environment, the control of fan noise is particularly urgent.
When the fan operates under a certain working condition, the generated noise can be divided into mechanical noise, wherein the mechanical noise is caused by defects in the process of manufacturing or installing the centrifugal fan, such as bearing noise of the fan, noise caused by a belt and transmission, noise caused by imbalance of a rotor, vibration noise of a shell and a pipeline and the like. But the current fan shock absorption effect is not good.
Disclosure of Invention
In order to solve the problems, the invention provides the centrifugal general fan shock absorber which has a good shock absorbing effect and effectively prevents noise.
A centrifugal general purpose fan damper comprising:
the first mounting plate is used for mounting a fan;
the second mounting plate is positioned at the lower part of the first mounting plate;
the damping mechanism is of an elastic deformation and internal hollow structure, and two ends of the damping mechanism are respectively abutted against the first mounting plate and the second mounting plate;
the two ends of the shock absorption mechanism are respectively connected with the two adjacent shock absorption mechanisms;
when the first mounting panel is because of when the fan work produces vibrations, right damper extrudees, thereby makes thereby the inside atmospheric pressure of damper increases and forms high-pressure gas, and high-pressure gas can be along with damper flows to adjacent damper, and then realizes high-pressure gas hedging phenomenon, and then reaches the effect of moving away to avoid possible earthquakes.
Further, the damping mechanism comprises a corrugated pipe, and two ends of the corrugated pipe are respectively abutted against the first mounting plate and the second mounting plate.
Furthermore, both ends of the corrugated pipe are respectively provided with an elastic body.
Furthermore, two first movable plugs capable of moving are arranged in the shock absorbing mechanism;
an oil cavity for containing hydraulic oil is formed in the shock absorbing mechanism and between the two first movable plugs.
Furthermore, a first movable plug and a second movable plug which can move are arranged in the shock absorbing mechanism;
an oil cavity for containing hydraulic oil is formed inside the shock absorbing mechanism and between the first movable plug and the second movable plug.
Further, the axis direction of the second movable plug is of a hollow structure, and an elastic membrane is arranged at the opposite end of the second movable plug and the first movable plug.
Furthermore, the shock absorbing mechanism is provided with a pipeline for inputting hydraulic oil into the oil cavity or discharging the hydraulic oil in the oil cavity.
Further, a valve is arranged on the pipeline.
Furthermore, a first step is arranged on the first movable plug, and a second step matched with the first step is arranged in the shock absorbing mechanism.
Further, the oil chamber is of an I-shape.
Due to the adoption of the technology, the invention has the following advantages:
the fan is arranged in the air, so that the fan is effectively prevented from directly acting on the ground or a workbench to vibrate and generate larger noise. The shaking force transmission of fan is to first mounting panel on with damper, until the offset of shock absorber mechanism goes up the offset, effectively plays the effect of moving away to avoid possible earthquakes to the production of noise prevention, and the fan damages because of vibrations.
The invention is further described with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a centrifugal general fan damper according to the present invention;
FIG. 2 is a schematic structural view of a second embodiment of a centrifugal general fan damper according to the present invention;
FIG. 3 is a schematic structural view of a third embodiment of a centrifugal general fan damper according to the present invention.
In the figure: 100 first mounting plate, 200 second mounting plate, 300 shock absorbing mechanism, 310 bellows, 400 shock absorbing mechanism, 401 second step, 402 oil chamber, 410 first movable plug, 411 first step, 420 second movable plug, 421 elastic membrane.
Detailed Description
First embodiment
As shown in fig. 1, the centrifugal general fan damper comprises a first mounting plate 100, a second mounting plate 200, a damping mechanism 300 and a damping mechanism 400, wherein the fan is mounted on the upper portion of the first mounting plate 100, the first mounting plate 100 is mounted on the upper portion of the second mounting plate 200 through at least two damping mechanisms 300, and the second mounting plate 200 can be fixed on the ground or a workbench, i.e. the position of the second mounting plate 200 is fixed. The damping mechanism 300 is an elastic deformation structure, and is disposed in a hollow manner in the axial direction of the damping mechanism 300, and both ends of the damping mechanism 300 in the axial direction are respectively abutted against the first mounting plate 100 and the second mounting plate 200. The shock absorbing mechanism 400 is connected between two adjacent shock absorbing mechanisms 300, the shock absorbing mechanism 400 is also hollow in the axial direction, two ends of the shock absorbing mechanism 400 in the axial direction are respectively connected with the two adjacent shock absorbing mechanisms 300, and the shock absorbing mechanism 400 is communicated with the insides of the two adjacent shock absorbing mechanisms 300. Thus, when the first mounting plate 100 vibrates due to the operation of the fan, the damping mechanism 300 is pressed to elastically deform the damping mechanism 300, the air pressure inside the damping mechanism increases, the formed high-pressure air flows to the adjacent damping mechanism 300 along with the damping mechanism 400, and the air consumes energy when flowing through the damping mechanism 300, so that the vibration force is gradually eliminated. In addition, the two adjacent shock absorbing mechanisms 300 form a high-pressure gas hedging phenomenon in the shock absorbing mechanism 400, and the vibration force is consumed in the process of the high-pressure gas hedging, thereby further absorbing the shock.
The shock absorbing mechanism 400 and the shock absorbing mechanism 300 can be connected by adopting an integrated mode, a threaded connection mode or a sleeving connection mode. Here, the shock absorbing mechanism 400 and the shock absorbing mechanism 300 may be regarded as a whole, and they are directly laid between the first mounting plate 100 and the second mounting plate 200, and there may not be any connection relationship between the shock absorbing mechanism 300 and the first mounting plate 100, and between the shock absorbing mechanism 300 and the second mounting plate 200. However, in order to prevent the shock-absorbing mechanism 300 from moving during use and thus reduce the efficiency of use, at least one end of the shock-absorbing mechanism 300 may be connected to the first mounting plate 100 or the second mounting plate 200 by glue or a fastener.
The shock absorbing mechanism 400 may be made of an elastic material, which prevents the shock absorbing mechanism 400 from affecting the elastic deformation of the shock absorbing mechanism 300. It can be seen that the shock absorbing mechanism 400 is not obstructed by the shock absorbing mechanism 400 and does not affect the deformation during the extrusion.
Referring to fig. 1, the damper mechanism 300 includes a bellows 310, and both ends of the bellows 310 are respectively abutted against the first mounting plate 100 and the second mounting plate 200. The bellows 310 is elastically deformable in the axial direction thereof to make the air pressure inside the bellows 310 large. Furthermore, the two ends of the bellows 310 are respectively provided with an elastic body, so that a sealed cavity is formed inside the bellows 310, and the elastic body can be made of rubber and is in a sphere shape. When the first mounting plate 100 and the second mounting plate 200 respectively press both ends of the bellows 310, the elastic body thereon is deformed toward the inside of the bellows 310, so that the air pressure inside the bellows 310 is increased.
To sum up, through setting up the fan is unsettled, prevent effectively that the fan direct action from shaking and sending great noise on ground or the workstation. The shaking force of the fan is transmitted to the first mounting plate and the damping mechanism 300 until the opposite impact on the damping mechanism 400 is counteracted, so that the damping effect is effectively achieved, and the noise is effectively avoided. In addition, the invention has compact structure, low cost and high utilization rate, and is beneficial to popularization and application.
Second embodiment
As shown in fig. 2, the shock absorbing mechanism 400 further includes two first movable plugs 410, and the two first movable plugs 410 are respectively capable of moving in the shock absorbing mechanism 400 along the axial direction of the shock absorbing mechanism 400, wherein each first movable plug 410 corresponds to one shock absorbing mechanism 300, and an oil chamber 402 is formed in the shock absorbing mechanism 400 and between the two first movable plugs 410, and the oil chamber 402 is provided with hydraulic oil therein, and the oil chamber 402 may be in an i shape. Thus, the high pressure gas formed in the shock absorbing mechanism 300 pushes the first movable plugs 410 to move, so that the two first movable plugs 410 in the same shock absorbing mechanism 400 move relatively to squeeze the hydraulic oil, thereby achieving the purpose of eliminating the shock force.
A sealing ring may be disposed between the first movable plug 410 and the shock absorbing mechanism 400 to improve the sealing performance, so as to effectively prevent the hydraulic oil in the shock absorbing mechanism 400 from flowing out from between the first movable plug 410 and the shock absorbing mechanism 400 until flowing into the shock absorbing mechanism 300. The number of the seal rings may be plural, and is not limited herein.
Further, the suspension mechanism 400 is provided with a pipe for supplying hydraulic oil to the inside of the oil chamber 402 or discharging hydraulic oil located inside the oil chamber 402, and the pipe is provided with a valve. It should be noted that an initial amount of hydraulic oil is provided inside the oil chamber 402, when the two first movable plugs 410 move relatively and move to the extreme position, the hydraulic oil is input into the oil chamber 402 through the valve control, the amount of the hydraulic oil increases, and the first movable plug 410 moves in the opposite direction, at this time, the hydraulic oil in the oil chamber 402 is discharged through the valve control, and the initial amount of hydraulic oil is returned, then the first movable plug 410 moves by the high-pressure gas formed by the damping mechanism 300, and then the above process is repeated, so as to offset the vibration force.
Referring to fig. 2, a first step 411 is disposed on the first movable plug 410, a second step 401 is disposed inside the shock absorbing mechanism 400 and is matched with the first step 411, and the first movable plug 410 is prevented from continuously moving towards the other first movable plug 410 by matching the first step 411 and the second step 401, so as to avoid collision or impact of the two first movable plugs 410, and further prevent the first movable plug 410 from vibrating due to collision. It should be noted that, due to the existence of the hydraulic oil, the two first movable plugs 410 are not directly collided, and by arranging the first step 411 and the second step 401, the pipeline is prevented from causing problems in the transmission and discharge of the hydraulic oil, and the two first movable plugs 410 are collided.
In summary, the damping mechanism 300 generates high pressure gas by squeezing, which pushes the two first movable plugs 410 to move relatively and squeeze the hydraulic oil, thereby counteracting the shock force. Therefore, the vibration force is transmitted to the hydraulic oil, and is absorbed by the hydraulic oil, so that the effect of shock absorption is achieved, and the shock absorption efficiency is further improved.
Third embodiment
As shown in fig. 3, the shock absorbing mechanism 400 further includes a first movable plug 410 and a second movable plug 420, and the first movable plug 410 and the second movable plug 420 can move inside the shock absorbing mechanism 400 along the axial direction of the shock absorbing mechanism 400, wherein the first movable plug 410 corresponds to the adjacent shock absorbing mechanism 300, and the second movable plug 420 corresponds to the adjacent shock absorbing mechanism 300. An oil chamber 402 is formed inside the suspension mechanism 400 between the first movable stopper 410 and the second movable stopper 420, and hydraulic oil is provided inside the oil chamber 402. The axial direction of the second movable plug 420 is a hollow structure, and the opposite ends of the second movable plug 420 and the first movable plug 410 are provided with elastic membranes 421, so that the opposite ends of the second movable plug 420 and the first movable plug 410 are closed by the elastic membranes 421. Like this, the high-pressure gas that forms in damper 300 promotes adjacent first movable stopper 410 and removes, and then extrudees the hydraulic oil in the oil pocket 402, and hydraulic oil receives on the power transmission that the extrusion produced the elastic membrane 421, and simultaneously, the high-pressure gas that forms in another damper 300 passes through inside the second movable stopper 420, and injects gas into elastic membrane 421 to absorb the power that hydraulic oil transmitted, thereby reach absorbing effect.
The elastic membrane 421 may be made of a rubber material. The elastic membrane 421 and the interior of the shock absorbing mechanism 400 are tightly fitted, which effectively prevents the hydraulic oil in the oil chamber 402 from flowing between the shock absorbing mechanism 400 and the second movable plug 420.
As shown in fig. 3, the suspension mechanism 400 is provided with a pipe for supplying hydraulic oil to the inside of the oil chamber 402 or discharging hydraulic oil located inside the oil chamber 402, and the pipe is provided with a valve. It should be noted that, an initial amount of hydraulic oil is provided inside the oil chamber 402, when the first movable plug 410 moves relatively and moves to the limit position, hydraulic oil is input into the oil chamber 402 through the valve control, the amount of hydraulic oil increases, and the first movable plug 410 moves in the opposite direction, at this time, hydraulic oil in the oil chamber 402 is discharged through the valve control, so that the hydraulic oil returns to the initial amount, and then the first movable plug 410 moves by the high-pressure gas formed by the damping mechanism 300, and then the process is performed gradually.
Referring to fig. 3, a first step 411 is disposed on the first movable plug 410, a second step 401 is disposed inside the shock absorbing mechanism 400 and is matched with the first step 411, and the first movable plug 410 is prevented from continuously moving towards the second movable plug 420 by matching the first step 411 with the second step 401, so as to avoid collision or impact between the first movable plug 410 and the second movable plug 420, and further prevent vibration caused by collision between the first movable plug 410 and the second movable plug 420. It should be noted that, due to the existence of the hydraulic oil, the first movable plug 410 and the second movable plug 420 do not collide directly, and by providing the first step 411 and the second step 401, the pipeline is prevented from causing problems in the transmission and discharge of the hydraulic oil, and the first movable plug 410 and the second movable plug 420 collide.
In summary, the high-pressure gas generated by the extrusion of one damping mechanism 300 pushes the first movable plug 410 to move, so as to extrude the hydraulic oil in the oil chamber 402, and the force generated by the extrusion of the hydraulic oil is transmitted to the elastic membrane 421, and meanwhile, the high-pressure gas formed in the other damping mechanism 300 passes through the interior of the second movable plug 420 and injects gas into the elastic membrane 421, so as to absorb the force transmitted by the hydraulic oil, thereby achieving the damping effect.
The above-mentioned embodiments are only for illustrating the technical idea and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made according to the spirit of the present invention will still fall within the scope of the present invention.
Claims (6)
1. The utility model provides a general fan shock absorber of centrifugation which characterized in that includes: the first mounting plate is used for mounting a fan; the second mounting plate is positioned at the lower part of the first mounting plate; the damping mechanism is of an elastic deformation and internal hollow structure, and two ends of the damping mechanism are respectively abutted against the first mounting plate and the second mounting plate; the two ends of the shock absorption mechanism are respectively connected with the two adjacent shock absorption mechanisms; when the first mounting plate vibrates due to the operation of the fan, the damping mechanism is extruded, so that the air pressure in the damping mechanism is increased to form high-pressure air, the high-pressure air flows to the adjacent damping mechanism along with the damping mechanism, the high-pressure air is flushed, and the damping effect is achieved;
the damping mechanism comprises a corrugated pipe, and two ends of the corrugated pipe are respectively abutted against the first mounting plate and the second mounting plate; a first movable plug and a second movable plug which can move are arranged in the shock absorbing mechanism; an oil cavity for containing hydraulic oil is formed in the shock absorbing mechanism and between the first movable plug and the second movable plug; the axis direction of the second movable plug is of a hollow structure, and an elastic membrane is arranged at the opposite end of the second movable plug and the first movable plug.
2. A centrifugal general fan damper according to claim 1, wherein both ends of the bellows are respectively provided with an elastic body.
3. The centrifugal general purpose fan damper of claim 1, further comprising: and the shock absorbing mechanism is provided with a pipeline for inputting hydraulic oil into the oil cavity or discharging the hydraulic oil in the oil cavity.
4. A centrifugal general purpose fan damper according to claim 3, wherein a valve is provided on said duct.
5. The centrifugal general fan damper according to claim 3, wherein the first movable plug is provided with a first step, and the damping mechanism is internally provided with a second step matched with the first step.
6. A centrifugal general purpose fan damper according to claim 3, wherein said oil chamber is in the shape of an i.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050155.0A CN108999924B (en) | 2018-09-10 | 2018-09-10 | General centrifugal fan shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050155.0A CN108999924B (en) | 2018-09-10 | 2018-09-10 | General centrifugal fan shock absorber |
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| Publication Number | Publication Date |
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| CN108999924A CN108999924A (en) | 2018-12-14 |
| CN108999924B true CN108999924B (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811050155.0A Active CN108999924B (en) | 2018-09-10 | 2018-09-10 | General centrifugal fan shock absorber |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203348402U (en) * | 2013-05-29 | 2013-12-18 | 袁红星 | Anti-overloading hydraulic balance shock absorber |
| CN207393585U (en) * | 2017-11-03 | 2018-05-22 | 浙江亿利达风机股份有限公司 | A kind of Anti-surge ring of axial fan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7320387B2 (en) * | 2005-04-06 | 2008-01-22 | Arvinmeritor Technology, Llc | Load adaptive damper with transient air signal restrictor |
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2018
- 2018-09-10 CN CN201811050155.0A patent/CN108999924B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203348402U (en) * | 2013-05-29 | 2013-12-18 | 袁红星 | Anti-overloading hydraulic balance shock absorber |
| CN207393585U (en) * | 2017-11-03 | 2018-05-22 | 浙江亿利达风机股份有限公司 | A kind of Anti-surge ring of axial fan |
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| Publication number | Publication date |
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| CN108999924A (en) | 2018-12-14 |
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