CN102029211A - Non-obstructive particle damping sound insulation sleeve - Google Patents
Non-obstructive particle damping sound insulation sleeve Download PDFInfo
- Publication number
- CN102029211A CN102029211A CN2009100074767A CN200910007476A CN102029211A CN 102029211 A CN102029211 A CN 102029211A CN 2009100074767 A CN2009100074767 A CN 2009100074767A CN 200910007476 A CN200910007476 A CN 200910007476A CN 102029211 A CN102029211 A CN 102029211A
- Authority
- CN
- China
- Prior art keywords
- damping
- microparticle
- sound insulation
- nonobstructive
- noise
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 54
- 238000009413 insulation Methods 0.000 title claims abstract description 45
- 239000002245 particle Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 12
- 239000011859 microparticle Substances 0.000 claims description 51
- 239000004576 sand Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000005065 mining Methods 0.000 abstract description 3
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 230000000414 obstructive effect Effects 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000009323 psychological health Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 101100400452 Caenorhabditis elegans map-2 gene Proteins 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Landscapes
- Crushing And Grinding (AREA)
Abstract
In steel production and mining industries, the noise of a ball mill can achieve over 100dBA and seriously damages the physical and psychological health of workers. In the conventional methods for abating the noise of the ball mill, sound insulation enclosure technology is mostly adopted, and the technology can partially insulate intermediate-frequency and high-frequency noises but has an undesirable abatement effect relative to a ball mill based on a low-frequency noise. The invention innovatively provides a non-obstructive particle damping sound insulation sleeve through the weakening of a resonance peak (specifically shown in an abstract figure 1) of a cylinder of the ball mill by non-obstructive particle damping and the technology for noise insulation by using the sound insulation sleeve aiming at the characteristics of the ball mill by acoustic theory and non-obstructive particle damping technology, the noise of the ball mill is fundamentally abated and the defects of the conventional sound insulation and noise reduction equipment are overcome. A research shows that: damping vibration attenuation and noise reduction technology has low manufacturing cost, high practicality, great breakthrough particularly in the field of low-frequency sound insulation and wide development prospect and application space.
Description
Technical field
The present invention is directed to the problem that exists in the ball mill noise abatement in present mining, the steel industry, use the invention of nonobstructive microparticle damping vibration attenuation technology and sound insulating theory and designed nonobstructive microparticle damping sound insulation cover.The present invention is by weakening the ball mill barrel resonance peak, reduce vibrational energy, thereby reaches the purpose that significantly reduces the noise that noise source sends.Nonobstructive microparticle damping sound insulation cover can not only exclude high-frequency noise, and also can well exclude low-frequency noise, and very strong practicality, reliability, economy are arranged, and belongs to noise control research field.
Background technology
In mining, steel industry, ball mill is as a size reduction machinery, and its noise is mainly by steel ball in the cylindrical shell, and mutual bump between ore materials and the liner plate and grinding produce, and by the outside radiated noise of drum surface, specifically see ball mill operation principle Fig. 1.At present, technology such as acoustic hood, acoustic screen are adopted in the ball mill noise abatement usually, and the regulation effect of these measure centerings, high-frequency sound source is better, but little for sound insulation effect for the ball mill of low-frequency noise.And the ball mill bad working environment seriously influences staff's health (specifically seeing ball mill barrel noise testing curve map 2), so press for its noise reduction problem of solution.
Nonobstructive microparticle damping is that traditional particle damping, impact damping technology combines with modern Theory of Vibration, material science and a passive vibration control new technology growing up.This technical pattern has that effect of vibration and noise reduction is good, adverse environment resistant, series of advantages such as anti-aging, has been used in fields such as Aeronautics and Astronautics abroad.The present invention is directed to the ball mill noise behavior, use nonobstructive microparticle damping and sound insulating theory and design nonobstructive microparticle damping sound insulation cover, reduce the emittance of its vibration noise by weak chop grinding mill barrel resonance peak.Because this invention has the characteristic of damping vibration attenuation, on root, noise is administered (root that vibration is noise), broken through in the past that the office of sound insulation and noise reducing equipment falls into, have advantages such as reliability, economy, practicality.
Summary of the invention
Inventive principle: the damping of nonobstructive microparticle is a kind of new anti-adverse environment damping that proposes late nineteen nineties in 20th century.By in structure, filling the nonobstructive microparticle, when producing recoil to it during in structural vibration, microparticle hits effect, can reduce the vibration of structure; Microparticle can produce dry friction at the volley simultaneously, or and the wall that vibrating between the momentum conversion takes place, and heating, viscous detrusion etc., the effect of absorption or dissipates vibration energy is all arranged, its principle can illustrate with rocking the tungsten microparticle bottle that the certain volume ratio is housed, and concrete principle and is rocked empty bottle and compared as shown in Figure 3, very big resistance is arranged, need bigger energy.Show after tested: the filling rate with 90% in the hole of beam is filled the tungsten microparticle, can make the first natural frequency place amplitude of beam reduce more than 60 times, the damping ratio of beam is increased to 0.109 by original 0.000148, improved near three orders of magnitude, and the tungsten powder of filling only account for beam heavy about 5%, it serves to show the validity of nonobstructive microparticle damping.
Nonobstructive microparticle damping sound insulation cover is exactly a sound arrester of using nonobstructive microparticle damping invention design, particular content of the present invention: the cylindrical shell of ball mill is wrapped up with the sound insulation steel plate, form a sound insulation cover, the space between this cover and ball mill barrel (space is generally at 30-100mm) locates to fill the microparticle body (diameter＜5mm) of certain volume ratio and granularity.In order to prevent the leakage of nonobstructive microparticle, all added rubber blanket in the junction of circumferential and axial gusset and ball mill barrel and sound insulation steel plate, both blocked solid-borne sound transmission, prevented the leakage of microparticle again.Simultaneously, rotation along with cylindrical shell, the sound insulation cover also and then rotates, all the time have microparticle to surround like this around the ball mill barrel, its motion is opposite with the acceleration direction of structural vibration, and the effect that hinders vibration is arranged, and constantly bump and friction between the microparticle, consume the noise energy of cylindrical shell because of the vibration radiation, thereby reach the purpose that fundamentally reduces its noise radiation, concrete structure is seen Fig. 4.This nonobstructive microparticle damping sound insulation cover can suppress the noise of noise, the especially low frequency configuration of cylindrical shell vibration generation well.Because advantages such as its practicality, reliability, economy, application prospect is very extensive.
Description of drawings
Fig. 1 ball mill operation principle;
Fig. 2 ball mill barrel noise testing curve;
Fig. 3 nonobstructive microparticle damping principle schematic diagram;
Fig. 4 nonobstructive microparticle damping sound insulation nested structure.
The specific embodiment
Based on sound insulating theory,,, design nonobstructive microparticle damping sound insulation cover by reducing the noise radiation that the structural vibrations energy reduces structure in conjunction with the design feature of ball mill barrel.The present invention mainly divides two parts, and the one, the structure of sound insulation cover, the 2nd, the nonobstructive microparticle of between ball mill barrel and sound insulation cover, filling.By selecting suitable geometry, making the sound insulation property that measures such as material and filling microparticle can further improve total, reach the effect that the noise of various frequency ranges is all had fine sound insulation.
1. nonobstructive microparticle damping sound insulation Analysis of Nested Design
The sound insulation cover of the present invention's design, requirement is based on the planform of ball mill barrel, space between assurance ball mill barrel and the sound insulation cover is generally at 30～100mm, the sound insulation cover will be divided into several parts according to the length of ball mill barrel and the size of circumference, circumferentially can not be above 2 meters with axial every segment length, the thickness of damping steel plate is generally 3～6mm.Fixedly realizing by the circumferential and axial gusset of these damping steel plates in order to prevent solid-borne sound transmission, on the connection surface of axial and circumferential gusset, adds rubber blanket.In order to prevent the leakage of nonobstructive microparticle, all add rubber blanket and link with steel plate at the seam crossing of damping steel plate.Reinforced for convenience, on every section cylindrical shell, all have the material window that adds microparticle, it is fixedly realized by pressing closer screw.In order to increase the damping of nonobstructive microparticle damping sound insulation cover, on the outer surface of sound insulation cover, be coated with one deck damping paint, the thickness of coating is chosen in 0.5～5mm.So just form an airtight housing, this airtight shell structure wants to reduce the leakage of sound as far as possible, will satisfy the requirement of strength and stiffness simultaneously, also must be convenient to operation, maintenance and dismounting.The concrete structure of nonobstructive microparticle damping sound insulation cover as shown in Figure 4.
2. the filler of nonobstructive microparticle damping sound insulation cover
According to nonobstructive microparticle damping technology, fill different types of particle, its effectiveness in vibration suppression difference, the proportion of particle is big more, and effect is good more.On nonobstructive microparticle Material Selection, it can be grains of sand, iron powder, tungsten powder of certain particle size etc., and the present invention selects for use the grains of sand to make filler, its granularity is generally less than 5mm, and filling rate is accomplished effectively to control vibration generally 90～95% as required, reduce noise, economy and durability again.
Claims (6)
1. nonobstructive microparticle damping sound insulation is overlapped, at the ball mill noise behavior, based on nonobstructive microparticle damping, and in conjunction with sound insulating theory, innovative design goes out a kind of sound arrester that can both effectively exclude each frequency range noise, especially low-frequency noise is had good defening effect.The present invention encloses one deck damping steel plate on ball mill barrel, the grains of sand with certain particle size are filled between cylindrical shell and the damping steel plate then, and filling rate is 90～95%.Damping steel plate is fixing by the axial and circumferential rib.In order to prevent solid-borne sound transmission, done handling flexibly in the junction of axial and circumferential rib.This nonobstructive microparticle damping sound insulation cover and cylindrical shell together rotate, can effective for a long time vibration and noise reducing, and application prospect is very extensive.
2. nonobstructive microparticle damping sound insulation cover according to claim 1, it is characterized in that: innovation ground is applied to nonobstructive microparticle damping on the ball mill noise abatement problem, in conjunction with sound insulating theory, having designed nonobstructive microparticle damping sound insulation cover, is a quantum jump in low frequency configuration sound insulation field.
3. nonobstructive microparticle damping sound insulation cover according to claim 1, it is characterized in that: the outer gusset one deck steel plate of ball mill barrel, the damping steel plate scope that the present invention selects is 3～6mm, outer surface at steel plate is coated with the last layer damping paint, high-frequency noises is also had well to exclude effect like this.
4. nonobstructive microparticle damping sound insulation cover according to claim 1, it is characterized in that: leak in order to prevent solid-borne sound transmission and microparticle, in the sound insulation steel plate of cylindrical shell periphery and being connected in the design of cylindrical shell, handling flexibly has all been done in junction to the axial and circumferential rib, adds the rubber damping vibration attenuation pad.
5. nonobstructive microparticle damping sound insulation cover according to claim 1, it is characterized in that: the nonobstructive microparticle of filling can be powders such as the grains of sand of certain particle size, iron powder, tungsten powder, diameter is generally less than 5mm, filling rate is generally 90～95%, accomplish as required effectively to control vibration, reduce noise, economy and durability again.The present invention does to fill microparticle through relatively adopting the grains of sand, and is economical and practical, and good application prospects is arranged.
6. overlap to the described nonobstructive microparticle of claim 5 damping sound insulation according to claim 1, it is characterized in that: the design etc. of flexibly connecting of the geometry of nonobstructive microparticle damping, soundproof principle, sound insulation cover and axial and circumferential rib is combined, realized the function of nonobstructive microparticle damping sound insulation cover.Can effectively exclude high-frequency noises, can reduce low-frequency noise by nonobstructive microparticle damping again, make the present invention the good effect that excludes all be arranged each frequency range noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100074767A CN102029211A (en) | 2009-02-11 | 2009-02-11 | Non-obstructive particle damping sound insulation sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100074767A CN102029211A (en) | 2009-02-11 | 2009-02-11 | Non-obstructive particle damping sound insulation sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102029211A true CN102029211A (en) | 2011-04-27 |
Family
ID=43882987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100074767A Pending CN102029211A (en) | 2009-02-11 | 2009-02-11 | Non-obstructive particle damping sound insulation sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102029211A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437811A (en) * | 2014-12-02 | 2015-03-25 | 西安建筑科技大学 | Vibration damper of large vertical mill body |
| CN107300224A (en) * | 2017-08-22 | 2017-10-27 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit and the air conditioner with it |
| CN108144700A (en) * | 2018-02-11 | 2018-06-12 | 江西亿丰精密铸造有限公司 | A kind of coating material production abrasive roller |
-
2009
- 2009-02-11 CN CN2009100074767A patent/CN102029211A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437811A (en) * | 2014-12-02 | 2015-03-25 | 西安建筑科技大学 | Vibration damper of large vertical mill body |
| CN107300224A (en) * | 2017-08-22 | 2017-10-27 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit and the air conditioner with it |
| CN108144700A (en) * | 2018-02-11 | 2018-06-12 | 江西亿丰精密铸造有限公司 | A kind of coating material production abrasive roller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105922817B (en) | A kind of compound vibration damping and noise reducing device of city rail vehicle wheel | |
| CN107178574A (en) | A kind of powered shock absorption device with generating function | |
| CN106930592B (en) | A kind of multidirectional compound TMD damper of ball-type | |
| CN102029211A (en) | Non-obstructive particle damping sound insulation sleeve | |
| CN110344408B (en) | Energy-absorbing and shock-absorbing method for anchor head of anchor rod | |
| CN105291693B (en) | A kind of wheel disc type particle damped vibration attenuation device used for rail vehicle | |
| CN109653080B (en) | Liquid mass double-tuned shock absorber and assembling method thereof | |
| CN105508815A (en) | Vibration reducing foot pad and air conditioner | |
| CN103104646B (en) | Clamp type damper capable of controlling multi-dimensional vibration of tubular structure | |
| CN108412947A (en) | A kind of low frequency wide area structure vibration-repressing device that control frequency domain is tunable | |
| CN109323045A (en) | A kind of elastic pipeline hanger that damp type vibration shock isolation peculiar to vessel is hit | |
| CN106641094B (en) | A kind of fan stator dynamic vibration absorber and its installation method | |
| CN103994175B (en) | Automobile noise reduction transmission shaft | |
| CN110065273A (en) | A kind of interlayer corrugated cylinder shell and its manufacturing method for filling magnetorheological damping composite material | |
| CN110329080A (en) | A kind of damping pantograph for handing over train for rail | |
| CN107191745B (en) | A kind of generating set installation pedestal protection mechanism | |
| CN206243513U (en) | Encircling type is adjustable install pointing accuracy sensor damping frame | |
| CN207891654U (en) | A kind of steel spring vibration isolator PRC outer barrels for floating track plates | |
| CN108591339A (en) | A kind of drop spring vibration isolation device and its vibration isolating method | |
| CN207830271U (en) | A kind of noise-reduction type hydraulic cylinder assembly with shock-absorbing function | |
| CN208858842U (en) | A kind of adjustable dynamic vibration absorber of damping | |
| CN209705175U (en) | A kind of external mounting type planetary roller screw-rubber composite vibration reducing device | |
| CN102008990A (en) | Damping/silencing compound air device | |
| CN208397180U (en) | A kind of vibration absorber for automobile transmission shaft | |
| CN201906635U (en) | Vibration-absorption and noise-reduction composite air device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO TECHNOLOGICAL UNIVERSITY Free format text: FORMER OWNER: LIANG SEN Effective date: 20110627 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 266033 MAILBOX 256, NO. 11, FUSHUN ROAD, SIFANG DISTRICT, QINGDAO CITY, SHANDONG PROVINCE TO: 266033 NO. 11, FUSHUN ROAD, QINGDAO CITY, SHANDONG PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110627 Address after: 266033 Fushun Road, Shandong, China, No. 11, No. Applicant after: Qingdao University of Technology Address before: 256 box 11, 266033 Fushun Road, Sifang District, Shandong, Qingdao Applicant before: Liang Sen |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110427 |