CN104621711B - The noise-reduction method of a kind of cigarette making and tipping machine and device thereof - Google Patents
The noise-reduction method of a kind of cigarette making and tipping machine and device thereof Download PDFInfo
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- CN104621711B CN104621711B CN201510034992.4A CN201510034992A CN104621711B CN 104621711 B CN104621711 B CN 104621711B CN 201510034992 A CN201510034992 A CN 201510034992A CN 104621711 B CN104621711 B CN 104621711B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/52—Incorporating filters or mouthpieces into a cigarette rod or a tobacco rod
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
Abstract
A kind of noise-reduction method of cigarette making and tipping machine, it is characterized in that, for air power noise, machine driving and resonant noise, electromagnetic excitation noise, by different noise frequencies and vibration strong or weak characteristic, independent design vibration and noise reducing device, reduces the purpose of cigarette making and tipping machine global noise；A kind of denoising device of cigarette making and tipping machine, it is characterized in that, in the installation room of spicing machine depression dust-removing fan outlet, eccentric tubes acoustic filter is installed, installation room is equipped with protective door, in feeding machine negative-pressure air fan air inlet elbow, Winding pipe silencer is installed, observe at spicing machine and protective window is installed multilamellar organic glass door, the all protective doors of cigarette making and tipping machine are provided with door body sound absorption structure, in cigarette making and tipping machine, some install noise reduction sealing additional without the case often opened and Men Chu, and install cushion on motor mount.Present invention have the advantages that and carry out personalized designs after noise reduction is transformed, all test points of noise of cigarette making and tipping machine are respectively less than 85dB.
Description
Technical field
The present invention relates to cigarette machinery, particularly the noise-reduction method of cigarette making and tipping machine and device thereof, be specially the vibration and noise reducing realized under high speed cigarette making and tipping machine steady operational status, to meet environment-friendly and green production requirement.
Background technology
Cigarette making and tipping machine is the important equipment during cigarette industry produces, and is mainly made up of feed sett frame, rolled forming machine and spicing machine.Carry at tobacco shred, loose, remove impurity, slivering, roll, in tipping process, cigarette making and tipping machine high-speed cruising, and with high pressure, negative pressure and dust removal process, because Earlier designs does not consider noise reduction, noise is excessive.Unit not only noise is big, noise source point distribution wide (see Fig. 9), and whole noise spectrum is broadband, and close to white noise, A weighted sound pressure level is high, and particularly spicing machine front noise highest point reaches about 89.4dB, (see Fig. 7).Much larger than the noise occupational exposure limit 85dB that " industrial site harmful factor occupational exposure limit (GBZ2.2--2007) " in " People's Republic of China's Occupational sanitary standard " specifies.
According to acoustical definition: L=10log (Ie/Io), wherein: L represents acoustic intensity (unit dB), and Ie represents current acoustic energy, Io represents basis acoustic energy.Where it can be seen that when Ie and Io differs one times: L=10log2=3dB, say, that acoustic energy often doubles or reduces half, being reflected as noise in sound level increases or reduces 3dB.Therefore, the most strong noise limit value 85dB of the most strong noise 89dB national regulation of cigarette making and tipping machine exceeds more than one times on acoustic energy, and the impact of people is very big by it.Noise decibel number, with exponential form correspondence acoustic energy, exceeds 5dB and represents that the noise in spicing machine front is about beyond 3 times of country's noise criteria.
Operator are chronically in strong noise region, and work is difficult to concentrate on, and can cause the physical impairment that cannot reverse.The serious health damaging plant operations personnel, therefore unit noise reduction is seemed particularly necessary.
For being accurately positioned noise source point, cigarette making and tipping machine is carried out matrix hauling type measure and vector emulation mode to noise source implement location after, by the analysis to cigarette making and tipping machine noise source, it has been found that noise source mainly has two classes, one is air power noise, and two is machine driving and resonant noise；It addition, also have the electromagnetic excitation noise etc. that noise is less.Wherein, air power noise is main noise source, is mainly distributed on feed sett frame and spicing machine part, machine driving and resonant noise are time noise source, and both is noise reduction emphasis, for the electromagnetic excitation that noise is less, can simply administer.
Summary of the invention
For reducing the above-mentioned main noise of cigarette making and tipping machine, noise control within the noise occupational exposure limit of regulation, the present invention is directed to different noise source and characteristic thereof, take distinct methods and device to be respectively directed to air power noise, machine driving and resonant noise, electromagnetic excitation noise and be controlled.
The noise-reduction method of this cigarette making and tipping machine, its principle is not reduce production efficiency, do not change production management's flow process, do not increase Operation and maintenance workload, do not spray stimulus material and use is likely to affect cigarette quality and damage premised on the method that workman is healthy, all acoustic damping materials contacted with tobacco shred simultaneously, all require customization according to food stage；It is characterized in that, for air power noise, machine driving and resonant noise, electromagnetic excitation noise, by different noise frequencies and vibration strong or weak characteristic, independent design vibration and noise reducing device, reduce the purpose of cigarette making and tipping machine global noise.
Concrete grammar is:
One, air power noise noise reduction:
First, medium-high frequency section generally it is in for air power noise, noise penetrance is weak, easy absorption characteristic, at feed sett frame negative-pressure air fan air inlet elbow and spicing machine depression dust-removing fan outlet, take, by duct noise frequency, wind speed, air quantity feature, personalized designs Winding pipe silencer and centering type pipeline silencer, to reach the purpose of noise reduction from noise source；
1, in the strong noise pipeline of spicing machine air outlet, quote machinery noise elimination technique and the composite duct noise elimination technique such as acoustic filter, pistol with a silencer noise elimination bowl, installing the centering type pipeline silencer integrating the multiple noise reduction modes such as damping, antivibration, resonance, sound deadening capacity is at 40dB；
2, increasing Winding pipe silencer at feed sett frame negative-pressure air fan entrance, built-in multi-layer microporous plate wideband noise elimination technique, global design is bend pipe camber, and sound deadening capacity reaches 18dB；
3, in noise point, increase door and case, utilize sound absorption, sound insulation property and sound wave reflection angle and diffraction characteristic, make aerodynamic noise repeatedly absorb at device interior to greatest extent, significantly reduce noise to external radiation；
4, with sealing strip, closure, block noise leakage channel are implemented in the gap between the case in cigarette making and tipping machine, door, windowpane.
Two, the improvement of mechanically and electrically magnetic noise:
For machine driving and resonant noise, at each mechanical part junction of cigarette making and tipping machine and machine driving place, medium and low frequency section generally it is according to its resonant noise, and penetrance is strong, noise is along the feature of the Hard link such as door, case position Vibration propagation, take by different parts noise frequency and vibration strong or weak characteristic, independent design vibration damping, damp special sound absorber, reduce the purpose of this bulk noise of cigarette making and tipping machine.
1, the very noisies such as mair motor, vibration source are installed special efficient cushion, reduce overhead speaker mode propagation path；
2, cigarette making and tipping machine spicing machine and very noisy region, machine for rolling and molding joint portion, dredge by frequency characteristic design energy, dredges noise energy to station opposite direction, and implements to absorb；
3, noise energy key area adopts the sound absorption of slit bundle chamber resonance absorption, micropore and thin plate sound absorption technique, oscillation on large scale decay low-frequency noise；
4, according to noise attentuation 1/4 wavelength characteristic, being computed 100Hz low-frequency noise depletion layer is 0.7m-0.9m, actual design cannot realize, must by position noise band feature and strong and weak characteristic targetedly at indoor design different materials, different-thickness, the multilamellar sound absorption and insulation device of different porosities, utilizes noise to penetrate unlike material decay and maximizes theory, all-bottom sound of decaying；
5, for low-frequency noise centrostigma, adopt strong drag, noise dead ring and damping to coordinate the mode enhancing sound surface densities such as damping sheet, reduce the coincidence frequency of case, reduce entrant sound amount；
6, adopt slit or multilamellar lucite to fill noble gas, use transparent sound-absorbing material technology simultaneously, oise insulation factor and the sound absorbing capabilities of cigarette making and tipping machine low-frequency noise strong entrant sound point are greatly improved, the enforcement of this technology makes the oise insulation factor of spicing machine upper-lower door reach 33dB；
7, the general case for cigarette making and tipping machine adopts integrated design scheme, reduces the bare board area of sound source contact surface as far as possible, strengthens the absorption to reflecting background, makes noise at cigarette making and tipping machine attenuated inside, reduces external radiation.
The denoising device of this cigarette making and tipping machine, it is in cigarette making and tipping machine, install acoustic filter and sound absorber additional, described cigarette making and tipping machine is by feed sett frame, rolled forming machine and spicing machine composition, cigarette making and tipping machine has 2 blower fans, one is arranged on feed sett frame, play tobacco shred conveying and dustproof function, another is arranged on spicing machine, produce work negative pressure and play dustproof function, it is characterized in that, in the installation room of spicing machine depression dust-removing fan outlet, centering type pipeline silencer is installed, installation room is equipped with protective door, in feed sett frame negative-pressure air fan air inlet elbow, Winding pipe silencer is installed, observe at spicing machine and protective window is installed multilamellar organic glass door, the all protective doors of cigarette making and tipping machine are provided with door body sound absorption structure, in cigarette making and tipping machine, some install noise reduction sealing additional without the case often opened and Men Chu, and cushion is installed on motor mount.
Described centering type pipeline silencer, its leading portion internal diameter is consistent with blower fan air-out extension hose internal diameter, level is installed, leading portion is connected with blower fan air-out extension hose by hose connection changeover portion, back segment is connected with spicing machine discharge pipe by flange, two sections of internal diameters are identical, leading portion lower eccentric jut is resistive slit bundle chamber sound absorption structure, absorbent treatment is six layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat, sound-absorbing porous material, dust isolating membrane, slit bundle chamber absorbent treatment and outermost cavity, leading portion top resistive sound absorption structure only three layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat and sound-absorbing porous material, eccentric most path thickness is the 40% of eccentric maximum diameter thickness, back segment reactive muffling structure includes longitudinally mounted baffler and supports, baffler supports to be provided with and supports vertical baffler with baffler, baffler is positioned at the middle part of exhaust duct, the area of baffler is 1.2-1.3 times of blower fan air-out extension hose area, the inwall of centering type pipeline silencer back segment is provided with noise elimination bowl, arrow direction is that air-flow passes through direction.
Described Winding pipe silencer, it is arranged on feed sett frame negative-pressure air fan air inlet elbow, the internal diameter of Winding pipe silencer is consistent with air outlet internal diameter of the pipeline, the length of Winding pipe silencer is consistent with former air inlet elbow with radian, upper end is connected with feed sett frame blast pipe by flange, lower end is connected with blower fan air intake extension hose by hose connection changeover portion, Winding pipe silencer totally six layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat, sound-absorbing porous material, dust isolating membrane, slit bundle chamber absorbent treatment and outermost cavity, metal piercing layer armour layer and non-woven fabrics overcoat act the effect preventing sound-absorbing porous material from being taken away by pipeline high speed air-flow jointly, dust isolating membrane play prevent flue dust enter rear cavity effect.
Described multilamellar organic glass door, totally five layers, it is followed successively by lucite, layer of inert, transparent sound insulation wrap film, clear gum sound absorption fat and lucite from the inside to surface, the size of multilamellar organic glass door, shape are identical with bare glass door design, the inside and outside two-layer lucite entirety fusion molding of multilamellar organic glass door, interior filling with inert gas is not revealed, and its oise insulation factor is 30dB.
Described door body sound absorption structure, it is six layers of sound absorption structure, including perforated plastic-aluminum plate armour layer, non-woven fabrics overcoat, high porosity sound absorption cotton, low porosity high quality cotton, damping sheet and door body from inside to outside, door body has the connecting device with doorframe, its oise insulation factor is 30dB.
The present invention, according to noise source and characteristic thereof, when not affecting the original structure of cigarette making and tipping machine, carries out personalized designs, after noise reduction is transformed, can be good at reducing cigarette making and tipping machine noise, Winding pipe silencer sound deadening capacity is 18dB, and its overall sound deadening capacity of centering type pipeline silencer is 30dB；Reach the technical standard of national regulation; protect employee healthy while; ensure that safety in production, improve production efficiency; the utilization of multinomial integrated approach and technology, makes cigarette making and tipping machine obtain effective noise reduction, after noise reduction is transformed; the all test points of noise of cigarette making and tipping machine are respectively less than 85dB; see that Fig. 8, peak acoustic energy are reduced to the front 1/3-1/4 of transformation, reached the noise criteria of national regulation.Greatly reduce the noise injury to operator, and build an ecology, green working environment.
Accompanying drawing explanation
In Fig. 1 denoising device installation site figure, figure, it is from right to left: feed sett frame, rolled forming machine and spicing machine, wherein, 1, centering type pipeline silencer, 2, door body sound absorption structure, 3, Winding pipe silencer, 4, multilamellar organic glass door, 5, noise reduction seals, and 6, cushion
Fig. 2 is off in formula pipeline silencer installation site figure, figure, and 7, protective door, 8, installation room；
Fig. 3 spicing machine centering type pipeline silencer structural representation, in figure, 9. hose connection changeover portion, 10. metal piercing layer armour layer, 11. non-woven fabrics overcoat, 12. sound-absorbing porous materials, 13. dust isolating membrane, 14. slit bundle chamber absorbent treatment, 15. cavity, 16. bafflers support, 17. flanges, 18. baffler, 19 noise elimination bowls
Fig. 4 negative-pressure air fan Winding pipe silencer structural representation, in figure, 20. metal piercing layer armour layer；21. non-woven fabrics overcoat；22. sound-absorbing porous material；23. dust isolating membrane；24. slit bundle chamber absorbent treatment；25. cavity；26. flange；27. hose connection changeover portion；
The structural representation of Fig. 5 multilamellar organic glass door, in figure, 28, top layer lucite, 29, layer of inert, 30, transparent sound insulation wrap film, 31, clear gum sound absorption fat, 32, bottom lucite；
Fig. 6 door body sound absorption structure schematic diagram, in figure: 33. perforated plastic-aluminum plate armour layers, 34. non-woven fabrics overcoats, 35. high porosity sound absorption cottons, 36. low porosity high quality cottons, 37. damping sheets, 38. bodies；
Fig. 7 is equipment acoustic noise spectrogram before transformation
Fig. 8 is equipment acoustic noise spectrogram after transformation
Fig. 9 is unit plane graph before transformation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention is as follows:
In FIG with in Fig. 2, the denoising device of this cigarette making and tipping machine, it is in cigarette making and tipping machine, install acoustic filter and sound absorber additional, described cigarette making and tipping machine is from right to left by feed sett frame, rolled forming machine and spicing machine composition, cigarette making and tipping machine has 2 blower fans, one is arranged on feed sett frame, play tobacco shred conveying and dustproof function, another is arranged on spicing machine, produce work negative pressure and play dustproof function, it is characterized in that, in the installation room 8 of spicing machine depression dust-removing fan outlet, centering type pipeline silencer 1 is installed, installation room 8 is equipped with protective door 7, in feed sett frame negative-pressure air fan air inlet elbow, Winding pipe silencer 3 is installed, observe at spicing machine and protective window is installed multilamellar organic glass door 4, the all protective doors of cigarette making and tipping machine are provided with door body sound absorption structure 2, in cigarette making and tipping machine, some add noise reduction sealing 5 without the case often opened and Men Chu, and cushion 6 is installed on motor mount.
In figure 3, described centering type pipeline silencer, its leading portion internal diameter is consistent with blower fan air-out extension hose internal diameter, level is installed, leading portion is connected with blower fan air-out extension hose by hose connection changeover portion 9, back segment is connected with spicing machine discharge pipe by flange 17, two sections of internal diameters are identical, leading portion lower eccentric jut is resistive slit bundle chamber sound absorption structure, absorbent treatment is six layers, it is followed successively by metal piercing layer armour layer 10 from the inside to surface, non-woven fabrics overcoat 11, sound-absorbing porous material 12, dust isolating membrane 13, slit bundle chamber absorbent treatment 14 and outermost cavity 15, leading portion top resistive sound absorption structure only three layers, it is followed successively by metal piercing layer armour layer 10 from the inside to surface, non-woven fabrics overcoat 11 and sound-absorbing porous material 12, eccentric most path thickness is the 40% of eccentric maximum diameter thickness, back segment reactive muffling structure includes longitudinally mounted baffler and supports 16, baffler supports to be provided with on 16 and supports vertical baffler 18 with baffler, baffler 18 is positioned at the middle part of exhaust duct, the area of baffler 18 is 1.2-1.3 times of blower fan air-out extension hose area, the inwall of centering type pipeline silencer back segment is provided with noise elimination bowl 19, arrow direction is that air-flow passes through direction.
In the diagram, described Winding pipe silencer, it is arranged on feed sett frame negative-pressure air fan air inlet elbow, the internal diameter of Winding pipe silencer is consistent with air outlet internal diameter of the pipeline, the length of Winding pipe silencer is consistent with former air inlet elbow with radian, upper end is connected with feed sett frame blast pipe by flange 26, lower end is connected with blower fan air intake extension hose by hose connection changeover portion 27, Winding pipe silencer totally six layers, it is followed successively by metal piercing layer armour layer 20 from the inside to surface, non-woven fabrics overcoat 21, sound-absorbing porous material 22, dust isolating membrane 23, slit bundle chamber absorbent treatment 24 and outermost cavity 25, metal piercing layer armour layer 20 and non-woven fabrics overcoat 21 act the effect preventing sound-absorbing porous material 22 from being taken away by pipeline high speed air-flow jointly, dust isolating membrane 23 play prevent flue dust enter rear cavity 25 act on.
In Figure 5, described multilamellar organic glass door, totally five layers, it is followed successively by top layer lucite 28, layer of inert 29, transparent sound insulation wrap film 30, clear gum sound absorption fat 31 and bottom lucite 32 from the inside to surface, the size of multilamellar organic glass door, shape are identical with bare glass door design, the inside and outside two-layer lucite entirety fusion molding of multilamellar organic glass door, inside fills xenon and does not reveal.
In figure 6, described door body sound absorption structure, it is six layers of sound absorption structure, includes perforated plastic-aluminum plate armour layer 33, non-woven fabrics overcoat 34, high porosity sound absorption cotton 35, low porosity high quality cotton 36, damping sheet 37 and door body 38 from inside to outside, door body 38 has the connecting device with doorframe.
Claims (5)
1. the noise-reduction method of a cigarette making and tipping machine, its principle is not reduce production efficiency, do not change production management's flow process, do not increase Operation and maintenance workload, do not spray stimulus material and use is likely to affect cigarette quality and damage premised on the method that workman is healthy, all acoustic damping materials contacted with tobacco shred simultaneously, all require customization according to food stage, it is characterized in that, for air power noise, machine driving and resonant noise, electromagnetic excitation noise, by different noise frequencies and vibration strong or weak characteristic, independent design vibration and noise reducing device, reduce the purpose of cigarette making and tipping machine global noise；
Concrete grammar is:
One, air power noise noise reduction:
First, medium-high frequency section generally it is in for air power noise, noise penetrance is weak, easy absorption characteristic, at feed sett frame negative-pressure air fan air inlet elbow and spicing machine depression dust-removing fan outlet, take, by duct noise frequency, wind speed, air quantity feature, personalized designs Winding pipe silencer and centering type pipeline silencer, to reach the purpose of noise reduction from noise source；
(1), in the strong noise pipeline of spicing machine depression dust-removing fan outlet, quote machinery acoustic filter, pistol with a silencer noise elimination bowl noise elimination technique and composite duct noise elimination technique, the centering type pipeline silencer integrating damping, antivibration, the multiple noise reduction mode of resonance is installed；
(2), increasing Winding pipe silencer at feed sett frame negative-pressure air fan entrance, built-in multi-layer microporous plate wideband noise elimination technique, global design is bend pipe camber；
(3), in noise point, increase door and case, utilize sound absorption, sound insulation property and sound wave reflection angle and diffraction characteristic, make aerodynamic noise repeatedly absorb at device interior to greatest extent, significantly reduce noise to external radiation；
(4), with sealing strip, closure, block noise leakage channel are implemented in the gap between the case in cigarette making and tipping machine, door, windowpane；Two, the improvement of mechanically and electrically magnetic noise:
For machine driving and resonant noise, at each mechanical part junction of cigarette making and tipping machine and machine driving place, medium and low frequency section generally it is according to its resonant noise, and penetrance is strong, noise is along the feature of door, case Hard link position Vibration propagation, take by different parts noise frequency and vibration strong or weak characteristic, independent design vibration damping, damp special sound absorber, reduce the purpose of this bulk noise of cigarette making and tipping machine；
(1), mair motor very noisy, vibration source are installed special efficient cushion, reduce overhead speaker mode propagation path；
(2), cigarette making and tipping machine spicing machine and very noisy region, machine for rolling and molding joint portion, dredge by frequency characteristic design energy, dredge noise energy to station opposite direction, and implement to absorb；
(3), noise energy key area adopts the sound absorption of slit bundle chamber resonance absorption, micropore and thin plate sound absorption technique, oscillation on large scale decay low-frequency noise；
(4), according to noise attentuation 1/4 wavelength characteristic, being computed 100Hz low-frequency noise depletion layer is 0.7m-0.9m, actual design cannot realize, must by position noise band feature and strong and weak characteristic targetedly at centering type pipeline silencer and Winding pipe silencer indoor design different materials, different-thickness, the multilamellar sound absorption and insulation device of different porosities, utilizes noise to penetrate unlike material decay and maximizes theory, all-bottom sound of decaying；
(5), for low-frequency noise centrostigma, adopt strong drag, noise dead ring and damping to coordinate damping sheet mode enhancing sound surface density, reduce the coincidence frequency of case, reduce entrant sound amount；
(6), adopt slit or multilamellar lucite to fill noble gas, use transparent sound-absorbing material technology simultaneously, oise insulation factor and the sound absorbing capabilities of cigarette making and tipping machine low-frequency noise strong entrant sound point are greatly improved；
(7), integrated design scheme is adopted for the general case of cigarette making and tipping machine, reduce the bare board area of sound source contact surface as far as possible, strengthen absorption to reflecting background, make noise at cigarette making and tipping machine attenuated inside, reduce external radiation；
Described centering type pipeline silencer, its leading portion internal diameter is consistent with blower fan air-out extension hose internal diameter, level is installed, leading portion is connected with blower fan air-out extension hose by hose connection changeover portion, back segment is connected with spicing machine discharge pipe by flange, two sections of internal diameters are identical, leading portion lower eccentric jut is resistive slit bundle chamber sound absorption structure, absorbent treatment is six layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat, sound-absorbing porous material, dust isolating membrane, slit bundle chamber absorbent treatment and outermost cavity, leading portion top resistive sound absorption structure only three layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat and sound-absorbing porous material, eccentric most path thickness is the 40% of eccentric maximum diameter thickness, back segment reactive muffling structure includes longitudinally mounted baffler and supports, baffler supports to be provided with and supports vertical baffler with baffler, baffler is positioned at the middle part of exhaust duct, the area of baffler is 1.2-1.3 times of blower fan air-out extension hose area, the inwall of centering type pipeline silencer back segment is provided with noise elimination bowl.
2. the denoising device of a cigarette making and tipping machine, it is in cigarette making and tipping machine, install acoustic filter and sound absorber additional, described cigarette making and tipping machine is by feed sett frame, machine for rolling and molding and spicing machine composition, cigarette making and tipping machine has 2 blower fans, one is arranged on feed sett frame, play tobacco shred conveying and dustproof function, another is arranged on spicing machine, produce work negative pressure and play dustproof function, it is characterized in that, in the installation room of spicing machine depression dust-removing fan outlet, centering type pipeline silencer is installed, installation room is equipped with protective door, in feed sett frame negative-pressure air fan air inlet elbow, Winding pipe silencer is installed, observe at spicing machine and protective window is installed multilamellar organic glass door, the all protective doors of cigarette making and tipping machine are provided with door body sound absorption structure, in cigarette making and tipping machine, some install noise reduction sealing additional without the case often opened and Men Chu, and cushion is installed on motor mount；Described centering type pipeline silencer, its leading portion internal diameter is consistent with blower fan air-out extension hose internal diameter, level is installed, leading portion is connected with blower fan air-out extension hose by hose connection changeover portion, back segment is connected with spicing machine discharge pipe by flange, two sections of internal diameters are identical, leading portion lower eccentric jut is resistive slit bundle chamber sound absorption structure, absorbent treatment is six layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat, sound-absorbing porous material, dust isolating membrane, slit bundle chamber absorbent treatment and outermost cavity, leading portion top resistive sound absorption structure only three layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat and sound-absorbing porous material, eccentric most path thickness is the 40% of eccentric maximum diameter thickness, back segment reactive muffling structure includes longitudinally mounted baffler and supports, baffler supports to be provided with and supports vertical baffler with baffler, baffler is positioned at the middle part of exhaust duct, the area of baffler is 1.2-1.3 times of blower fan air-out extension hose area, the inwall of centering type pipeline silencer back segment is provided with noise elimination bowl.
3. the denoising device of a kind of cigarette making and tipping machine according to claim 2, it is characterized in that, described Winding pipe silencer, it is arranged on feed sett frame negative-pressure air fan air inlet elbow, the internal diameter of Winding pipe silencer is consistent with air outlet internal diameter of the pipeline, the length of Winding pipe silencer is consistent with former air inlet elbow with radian, upper end is connected with feed sett frame negative-pressure air fan blast pipe by flange, lower end is connected with blower fan air intake extension hose by hose connection changeover portion, Winding pipe silencer totally six layers, it is followed successively by metal piercing layer armour layer from the inside to surface, non-woven fabrics overcoat, sound-absorbing porous material, dust isolating membrane, slit bundle chamber absorbent treatment and outermost cavity, metal piercing layer armour layer and non-woven fabrics overcoat act the effect preventing sound-absorbing porous material from being taken away by pipeline high speed air-flow jointly, dust isolating membrane play prevent flue dust enter rear cavity effect.
4. the denoising device of a kind of cigarette making and tipping machine according to claim 2, wherein it is characterised by, described multilamellar organic glass door, totally five layers, it is followed successively by lucite, layer of inert, transparent sound insulation wrap film, clear gum sound absorption fat and lucite from the inside to surface, the size of multilamellar organic glass door, shape are identical with bare glass door design, the inside and outside two-layer lucite entirety fusion molding of multilamellar organic glass door, interior filling with inert gas.
5. the denoising device of a kind of cigarette making and tipping machine according to claim 2, it is characterized in that, described door body sound absorption structure, it is six layers of sound absorption structure, include perforated plastic-aluminum plate armour layer, non-woven fabrics overcoat, high porosity sound absorption cotton, low porosity high quality cotton, damping sheet and door body from inside to outside, door body has the connecting device with doorframe.
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|---|---|---|---|---|
| CN107084295A (en) * | 2017-06-13 | 2017-08-22 | 长沙新奥燃气有限公司 | A kind of noise reducing plate at tube bends |
| CN108266348A (en) * | 2017-12-30 | 2018-07-10 | 江苏永益环保科技有限公司 | Cellular noise reduction chimney |
| CN111508460B (en) * | 2020-03-26 | 2022-12-09 | 广州大学 | Sound insulation energy-absorbing composite structure aiming at impact noise |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7404292U (en) * | 1973-04-18 | 1978-03-30 | Hauni-Werke Koerber & Co Kg, 2050 Hamburg | MACHINE FOR MANUFACTURING TOBACCO PRODUCTS INDUSTRY |
| DE19943319A1 (en) * | 1999-09-10 | 2001-03-15 | Hauni Maschinenbau Ag | Arrangement for lowering the noise level in production machines of the tobacco processing industry which are exposed to flowing process air |
| CN202489166U (en) * | 2011-12-26 | 2012-10-17 | 宁波精马机械有限公司 | Noise reducing device for PASSIM and PROTOS70 cigarette making machine |
| CN203243928U (en) * | 2012-12-11 | 2013-10-23 | 浙江中烟工业有限责任公司 | Noise-reduction and sound-insulation cigarette making and tipping device in cigarettes factory |
| CN104217711A (en) * | 2013-06-02 | 2014-12-17 | 李新亮 | Sound-insulation noise-reduction system of roll-packing machine |
| CN204362939U (en) * | 2015-01-25 | 2015-06-03 | 常德烟草机械有限责任公司 | A kind of denoising device of cigarette making and tipping machine |
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2015
- 2015-01-25 CN CN201510034992.4A patent/CN104621711B/en active Active
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| CN104621711A (en) | 2015-05-20 |
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