CN106285837A - Single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging and preparation method thereof - Google Patents
Single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging and preparation method thereof Download PDFInfo
- Publication number
- CN106285837A CN106285837A CN201610946547.XA CN201610946547A CN106285837A CN 106285837 A CN106285837 A CN 106285837A CN 201610946547 A CN201610946547 A CN 201610946547A CN 106285837 A CN106285837 A CN 106285837A
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- China
- Prior art keywords
- noise reduction
- net
- upper shell
- exhaustor
- silencing net
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/0335—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with exhaust silencers in a single housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/06—Porous ceramics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses single-cylinder diesel engine silencer of a kind of noise reduction reduction of discharging and preparation method thereof, including pipe joint, upper shell, lower house, upper silencing net, lower silencing net, filtering bodies, vibration isolator, exhaustor and sound-absorbing material layer, wherein pipe joint one end is threadedly attached to the exhaust elbow on cylinder lid, the other end is fixing with lower house to be connected, being provided with a cell body between lower house and upper shell, exhaustor is connected with the mouth of pipe necking down of upper shell；Filtering bodies upper end is provided with silencing net, and lower end is provided with lower silencing net, filtering bodies be respectively arranged at two ends with outward extending vibration isolator；Filtering bodies, upper silencing net and lower silencing net are arranged in the groove between upper shell, lower house；The inwall of upper shell, lower house and exhaustor is filled with one layer of sound-absorbing material layer.Due to the fact that three grades, net section of employing ventilation amplifies noise reduction step by step, air-flow replaces noise reduction, the method for sound-absorbing material associating noise reduction from large and small hole, can effectively reduce noise.
Description
Technical field
The present invention relates to acoustic filter technical field, particularly relate to a kind of noise reduction reduce discharging single-cylinder diesel engine silencer and
Its preparation method.
Background technology
Acoustic filter is to stop sound transmission and a kind of device of allowing air-flow to pass through, is the weight eliminating air power noise
Want measure.It is arranged on engine exhaust port and reduces the device of noise.
Existing single-cylinder diesel engine silencer is expanded silencing cavity by inlet pipe joint, one-level, exhaustor forms, its deficiency
Locate as follows:
1, diesel combustion, work rough running, amplifies acoustic filter soundproof effect by diesel engine one-level poor.Send
" jump, jump, jump " noise and high decibel value make people be difficult to stand, then traffic control agencies dictate, be furnished with the agricultural fortune of diesel engine
Defeated car, tractor, hand tractor are forbidden to go down town.
2, because of noise factor, long drives agricultural transportation vehicle, tractor, the driver of hand tractor also feel that body and mind is tired
Standby.
3, single cylinder diesel annual output, sales volume 10,000,000, more than one hundred million of market maintenance, existing single cylinder diesel starts
Time or idling mode under, by the PM particulate emission in the dense flue gas that acoustic filter is discharged to air, severe contamination air shadow
Ring environment.
4, step up along with the requirement of environmental conservation, from the revision of the standards such as state 1, state 2, state 3, state 4, ejection PM value
The requirement constantly reduced, more difficult must be difficult to regard to what existing exhaust system also became for production firm.
5, single cylinder diesel is in order to burn completely, reduce discharge, uses the technology such as direct-injection, EFI or supercharging, row before discharge
Putting PM granule both difficulties and reach requirement, simple in construction, low cost and the low price separately required single cylinder engine adapts to the demand of user, also
Can not make the best of both worlds.
6, existing diesel engine silencer uses oxy-acetylene welding technique, and fabricating quality is coarse, and profile is the most attractive in appearance, with
Time productivity ratio the most relatively low under.
Therefore, the present inventor needs a kind of new technique of design badly to improve its problem.
Summary of the invention
It is desirable to provide single-cylinder diesel engine silencer of a kind of noise reduction reduction of discharging and preparation method thereof, its soundproof effect
Good, the discharge of PM is the most well improved, and simple in construction, preparation cost are low, use, safeguard and be also convenient for.
For solving above-mentioned technical problem, the technical scheme is that
The single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging, including: pipe joint, upper shell, lower house, upper silencing net, under
Silencing net, filtering bodies, vibration isolator, exhaustor and sound-absorbing material layer, wherein said pipe joint one end is threadedly attached to starts
Exhaust elbow in machine cylinder head, the other end is fixing with described lower house to be connected, and sets between described lower house and described upper shell
Being equipped with a cell body, described exhaustor is connected with the mouth of pipe necking down of described upper shell；Described filtering bodies upper end is provided with described upper noise reduction
Net, lower end is provided with described lower silencing net, described filtering bodies be respectively arranged at two ends with outward extending vibration isolator；Described filtering bodies,
Described upper silencing net and described lower silencing net are arranged in the groove between described upper shell, lower house；Described upper shell, institute
The inwall stating lower house and described exhaustor is filled with one layer of sound-absorbing material layer；Between described lower silencing net and described lower house
Cavity forms the first silencing cavity, and the cavity between described upper silencing net and described upper shell forms the second silencing cavity, described upper casing
The mouth of pipe necking down of body constitutes the 3rd silencing cavity to the space of described exhaustor；And the face, ventilation net section of described first silencing cavity
The long-pending ventilation net cross-sectional area more than described pipe joint internal channel.
Preferably, described upper silencing net and described lower silencing net are arranged with the aperture of multiple 3-5mm.
Preferably, described vibration isolator is fixed between described upper shell and described lower house by bolt assembly.
Preferably, described filtering bodies is made up of exotic material and is formed, and which is provided with multiple for passing through and filtering emission
The fine holes of gas.
Preferably, described sound-absorbing material layer passes through adhesive bonds in described upper shell, described lower house and described aerofluxus
The inwall of pipe.
Preferably, described sound-absorbing material layer be the asbestos material of heatproof, ceramic fiber paper, plain edition aluminum silicate fiber paper,
One or more in high aluminium profiles aluminum silicate fiber paper；Described adhesive is resistant to elevated temperatures Metal adhesive.
Preferably, the steel plate that described upper shell, described lower house and described exhaustor use thickness to be 1mm is prepared from；
Described upper silencing net and described lower silencing net use the steel plate of 0.5mm to be prepared from.
Preferably, described filtering bodies utilizes stainless steel cloth to be prepared from；Described vibration isolator is resistant to elevated temperatures asbestos board.
The preparation method of a kind of single-cylinder diesel engine silencer reduced discharging based on noise reduction described above, comprises the steps:
S1: preparing parts, described parts include pipe joint, upper shell, lower house, upper silencing net, lower silencing net, mistake
Filter body, vibration isolator, exhaustor；
S2: described lower house roll welding is connected on described pipe joint；
By integral for two half roll weldings of described exhaustor；
Mouth of pipe necking down roll welding by described exhaustor Yu described upper shell；
Filtering bodies is put between described upper silencing net and described lower silencing net；
It is put into described upper shell, lower house after filtering bodies, vibration isolator, described upper silencing net and described lower silencing net being combined
Between cell body in；
By bolt assembly, described vibration isolator is fixed between described upper shell and described lower house.
Preferably, described step S1 specifically includes:
The making of described pipe joint: by the tube material of 3mm wall thickness, rough turn, half fine turning outer circle to size, cut with scissors screw thread, cut
Riveting cell body；
Described upper shell and the making of described lower house: with the steel plate of 1mm by 2-3 deep drawn, shaping trimming, punching
Hole；Then through going oils and fats, pretreatment of derusting；Inwall is coated with resistant to elevated temperatures Metal adhesive, bonding sound-absorbing material layer；
The making of described exhaustor: exhaustor is that upper and lower two half roll weldings form, it uses the steel plate punched of 1mm, shaping
Trimming, goes by exhaustor to oils and fats, pretreatment of derusting, is then coated with resistant to elevated temperatures Metal adhesive, bonding sound-absorbing material on inwall
Layer；
Described upper silencing net and the making of described lower silencing net: with the steel plate of 0.5mm, rush the aperture of multiple 3-5mm, then
Trimming.
Using technique scheme, the present invention at least includes following beneficial effect:
The single-cylinder diesel engine silencer that noise reduction the most of the present invention reduces discharging, owing to using three grades, net section of ventilation to put step by step
Big noise reduction, air-flow replaces noise reduction, the method for sound-absorbing material associating noise reduction from large and small hole, and noise can be made to decline 15-25 decibel.
The fine holes of filter body can have the dual-use function of PM in noise reduction and filtering exhaust.Its noise elimination mechanism combines resistive noise reduction, resistance
Noise reduction, microperforated panel noise reduction, aperture noise reduction and the principle of porous material composite sound-absorbing, make in audible spectrum high, in, audible sound
Composition substantially reduces, and reaches to filter, reduce the effect of PM.
The preparation method of the single-cylinder diesel engine silencer that noise reduction the most of the present invention reduces discharging, takes by riveted, roll welding technique
For oxy-acetylene welding technique, reliability is good, and presentation quality also significantly improves, and the most corresponding productivity ratio also improves
1-2 times.
Accompanying drawing explanation
Fig. 1 is the structural representation of the single-cylinder diesel engine silencer that noise reduction of the present invention reduces discharging；
Fig. 2 is the preparation flow figure of the single-cylinder diesel engine silencer that noise reduction of the present invention reduces discharging.
Wherein: 1. pipe joint, 2. upper shell, 3. lower house, 4. go up silencing net, 5. descend silencing net, 6. filtering bodies, 7. vibration isolation
Pad, 8. exhaustor, 9. sound-absorbing material layer, 10. the first silencing cavity, 11. second silencing cavity, 12. the 3rd silencing cavity, 13. bolt groups
Part.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
As it is shown in figure 1, be to meet the single-cylinder diesel engine silencer that a kind of noise reduction of the present invention reduces discharging, including: pipe joint 1,
Upper shell 2, lower house 3, upper silencing net 4, lower silencing net 5, filtering bodies 6, vibration isolator 7, exhaustor 8 and sound-absorbing material layer 9, wherein
Described pipe joint 1 one end is threadedly attached to the exhaust elbow on cylinder lid, and the other end is fixed with described lower house 3
Connect, between described lower house 3 and described upper shell 2, be provided with a cell body, described exhaustor 8 and the mouth of pipe of described upper shell 2
Necking down connects；Described filtering bodies 6 upper end is provided with described upper silencing net 4, and lower end is provided with described lower silencing net 5, described filtering bodies 6
It is respectively arranged at two ends with outward extending vibration isolator 7；Described filtering bodies 6, described upper silencing net 4 and described lower silencing net 5 are respectively provided with
In groove between described upper shell 2, lower house 3；Described upper shell 2, described lower house 3 and the inwall of described exhaustor 8
It is filled with one layer of sound-absorbing material layer 9；Cavity between described lower silencing net 5 and described lower house 3 forms the first silencing cavity 10, institute
Stating the cavity between silencing net 4 and described upper shell 2 and form the second silencing cavity 11, the mouth of pipe necking down of described upper shell 2 is to institute
The space stating exhaustor 8 constitutes the 3rd silencing cavity 12；And the ventilation net cross-sectional area of described first silencing cavity 10 is more than described
The ventilation net cross-sectional area of pipe joint 1 internal channel.
Preferably, described upper silencing net 4 and described lower silencing net 5 are arranged with the aperture of multiple 3-5mm.
Preferably, described vibration isolator 7 is fixed between described upper shell 2 and described lower house 3 by bolt assembly 13.
Preferably, described filtering bodies 6 is made up of exotic material and is formed, which is provided with multiple for by and filtering emission
The fine holes of gas.
Preferably, described sound-absorbing material layer passes through adhesive bonds described upper shell 2, described lower house 3 and described row
The inwall of trachea 8.
Preferably, described sound-absorbing material layer be the asbestos material of heatproof, ceramic fiber paper, plain edition aluminum silicate fiber paper,
One or more in high aluminium profiles aluminum silicate fiber paper；Described adhesive is resistant to elevated temperatures Metal adhesive.Described high temperature resistant
Metal adhesive can with resistance to 1500 DEG C of temperature the most higher, described high temperature resistant sound-absorbing material can with heatproof 1260 DEG C or with
On.Owing to the deafener described in the present embodiment needs to coordinate electromotor to use, it is commonly known that described electromotor can produce in use
The highest raw temperature, reasonably selects high temperature resistant sound-absorbing material and resistant to elevated temperatures Metal adhesive so that whole deafener
Serviceability more preferable, service life is longer.Those skilled in the art are it is to be understood that the selection of sound-absorbing material described above is
The explanation carried out in order to the present embodiment can fully implement, any other obviously converts and replaces all at the present embodiment
Protection domain within.
Preferably, the preparation of described upper shell 2, described lower house 3 and described exhaustor 8 use thickness to be 1mm steel plate and
Become；Described upper silencing net 4 and described lower silencing net 5 use the steel plate of 0.5mm to be prepared from.
Preferably, described filtering bodies 6 utilizes stainless steel cloth to be prepared from；Described vibration isolator 7 is resistant to elevated temperatures asbestos board.
Preferably, described vibration isolator 7 is fixed on described upper shell 2 and institute by the bolt assembly 13 of 6-8 group M4-6 millimeter
State between lower house 3.
The operation principle of the present embodiment is: use due to use ventilation three grades, net section amplify noise reduction step by step, air-flow from
Large and small hole replaces noise reduction, the method for sound-absorbing material associating noise reduction, and noise can be made to decline 20-25 decibel.Filtering bodies 6 trickle
Hole can have the dual-use function of PM in noise reduction and filtering exhaust.Its noise elimination mechanism combines resistive noise reduction, resistant noise-reducing, micropunch
Plate noise reduction, aperture noise reduction and the principle of porous material composite sound-absorbing, make in audible spectrum high, in, audible sound composition substantially drop
Low, reach to filter, reduce the effect of PM.
The present embodiment has some benefit following compared with existing acoustic filter:
1, the single-cylinder diesel engine silencer of this multistage composite noise reduction can make noise decline 15-25 decibel.
2, the other noise of ear through noise elimination and is filtered the poop becoming soft by the rough sound that jumps, high, medium and low in audible spectrum
Audible sound composition substantially reduce, thus reduce the interference of people and injury.
3, the exhaust stream of electromotor is after filtering, and PM granular absorption is in filtering bodies 6, and the discharge of granule is significantly changed
Kind.
4, using bolt assembly 13 draw bail, filtering bodies 6 is easy to pull down routine cleaning.
Embodiment 2
As in figure 2 it is shown, the preparation side of the single-cylinder diesel engine silencer reduced discharging for a kind of noise reduction based on described in embodiment 1
Method, comprises the steps:
S1: preparing parts, described parts include pipe joint 1, upper shell 2, lower house 3, upper silencing net 4, lower noise reduction
Net 5, filtering bodies 6, vibration isolator 7, exhaustor 8；
S2: the roll welding of described lower house 3 is connected on described pipe joint 1；
By integral for two half roll weldings of described exhaustor 8；
Mouth of pipe necking down roll welding by described exhaustor 8 with described upper shell 2；
Filtering bodies 6 is put between described upper silencing net 4 and described lower silencing net 5；
Be put into after filtering bodies 6, vibration isolator 7, described upper silencing net 4 and described lower silencing net 5 are combined described upper shell 2,
In cell body between lower house 3；
By bolt assembly 13, described vibration isolator 7 is fixed between described upper shell 2 and described lower house 3.
Preferably, described step S1 specifically includes:
The making of described pipe joint 1: by the tube material of 3mm wall thickness, rough turn, half fine turning outer circle to size, cut with scissors screw thread, cut
Riveting cell body；
Described upper shell 2 and the making of described lower house 3: with the steel plate of 1mm by 2-3 deep drawn, shaping trimming, punching
Hole；Then through going oils and fats, pretreatment of derusting；Inwall is coated with resistant to elevated temperatures Metal adhesive, bonding sound-absorbing material layer；
The making of described exhaustor 8: exhaustor 8 forms for upper and lower two half roll weldings, it is with the steel plate punched of 1mm, whole
Shape trimming, goes by exhaustor 8 to oils and fats, pretreatment of derusting, is then coated with resistant to elevated temperatures Metal adhesive, bonding sound absorber on inwall
The bed of material；
Described upper silencing net 4 and the making of described lower silencing net 5: with the steel plate of 0.5mm, rush the aperture of multiple 3-5mm, and
Rear trimming.
The preparation method of the single-cylinder diesel engine silencer that the noise reduction described in this enforcement reduces discharging, replaces by riveted, roll welding technique
Oxy-acetylene welding technique, reliability is good, presentation quality also significantly improves, and the most corresponding productivity ratio also improves
1-2 times.And have employed three grades, net section of ventilation and amplify noise reduction step by step, air-flow replaces noise reduction, sound-absorbing material associating from large and small hole
The method of noise reduction, can make noise decline 15-25 decibel.The fine holes of filtering bodies 6 can have PM in noise reduction and filtering exhaust
Dual-use function.It is multiple that its noise elimination mechanism combines resistive noise reduction, resistant noise-reducing, microperforated panel noise reduction, aperture noise reduction and porous material
Close the principle of sound-absorbing, make in audible spectrum high, in, audible sound composition substantially reduce, reach to filter, reduce the effect of PM.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. the single-cylinder diesel engine silencer that a noise reduction reduces discharging, it is characterised in that including: pipe joint, upper shell, lower house, on
Silencing net, lower silencing net, filtering bodies, vibration isolator, exhaustor and sound-absorbing material layer, wherein said pipe joint one end is by screw thread even
Receiving the exhaust elbow on cylinder lid, the other end is fixing with described lower house to be connected, described lower house and described upper casing
Being provided with a cell body between body, described exhaustor is connected with the mouth of pipe necking down of described upper shell；Described filtering bodies upper end is provided with institute
Stating silencing net, lower end is provided with described lower silencing net, described filtering bodies be respectively arranged at two ends with outward extending vibration isolator；Described
Filtering bodies, described upper silencing net and described lower silencing net are arranged in the groove between described upper shell, lower house；On described
The inwall of housing, described lower house and described exhaustor is filled with one layer of sound-absorbing material layer；Described lower silencing net and described lower casing
Cavity between body forms the first silencing cavity, and the cavity between described upper silencing net and described upper shell forms the second silencing cavity,
The mouth of pipe necking down of described upper shell constitutes the 3rd silencing cavity to the space of described exhaustor；And the ventilation of described first silencing cavity
Net cross-sectional area is more than the ventilation net cross-sectional area of described pipe joint internal channel.
2. the single-cylinder diesel engine silencer that noise reduction as claimed in claim 1 reduces discharging, it is characterised in that: described upper silencing net and institute
State the aperture being arranged with multiple 3-5mm on lower silencing net.
3. the single-cylinder diesel engine silencer that noise reduction as claimed in claim 1 or 2 reduces discharging, it is characterised in that: described vibration isolator leads to
Cross bolt assembly to be fixed between described upper shell and described lower house.
4. the single-cylinder diesel engine silencer that the noise reduction as described in claim 1-3 is arbitrary reduces discharging, it is characterised in that: described filtering bodies
It is made up of exotic material and forms, which is provided with multiple for by the fine holes with filtering exhaust gases.
5. the single-cylinder diesel engine silencer that the noise reduction as described in claim 1-4 is arbitrary reduces discharging, it is characterised in that: described sound absorber
The bed of material passes through adhesive bonds at described upper shell, described lower house and the inwall of described exhaustor.
6. the single-cylinder diesel engine silencer that noise reduction as claimed in claim 5 reduces discharging, it is characterised in that: described sound-absorbing material layer is
One in the asbestos material of heatproof, ceramic fiber paper, plain edition aluminum silicate fiber paper, high aluminium profiles aluminum silicate fiber paper or many
Kind；Described adhesive is resistant to elevated temperatures Metal adhesive.
7. the single-cylinder diesel engine silencer that the noise reduction as described in claim 1-6 is arbitrary reduces discharging, it is characterised in that: described upper casing
The steel plate that body, described lower house and described exhaustor use thickness to be 1mm is prepared from；Described upper silencing net and described lower noise reduction
Net uses the steel plate of 0.5mm to be prepared from.
8. the single-cylinder diesel engine silencer that the noise reduction as described in claim 1-7 is arbitrary reduces discharging, it is characterised in that described filtering bodies
Stainless steel cloth is utilized to be prepared from；Described vibration isolator is resistant to elevated temperatures asbestos board.
9. a preparation method for the single-cylinder diesel engine silencer reduced discharging based on the arbitrary described noise reduction of claim 1-8, it is special
Levy and be, comprise the steps:
S1: preparing parts, described parts include pipe joint, upper shell, lower house, upper silencing net, lower silencing net, filtration
Body, vibration isolator, exhaustor；
S2: described lower house roll welding is connected on described pipe joint；
By integral for two half roll weldings of described exhaustor；
Mouth of pipe necking down roll welding by described exhaustor Yu described upper shell；
Filtering bodies is put between described upper silencing net and described lower silencing net；
It is put between described upper shell, lower house after filtering bodies, vibration isolator, described upper silencing net and described lower silencing net are combined
Cell body in；
By bolt assembly, described vibration isolator is fixed between described upper shell and described lower house.
10. the preparation method of the single-cylinder diesel engine silencer that noise reduction as claimed in claim 9 reduces discharging, it is characterised in that described
Step S1 specifically includes:
The making of described pipe joint: by the tube material of 3mm wall thickness, rough turn, half fine turning outer circle to size, cut with scissors screw thread, cut riveting groove
Body；
Described upper shell and the making of described lower house: with the steel plate of 1mm by 2-3 deep drawn, shaping trimming, punching；And
By past oils and fats, pretreatment of derusting；Inwall is coated with resistant to elevated temperatures Metal adhesive, bonding sound-absorbing material layer；
The making of described exhaustor: exhaustor is that upper and lower two half roll weldings form, and it is cut with the steel plate punched of 1mm, shaping
Limit, goes by exhaustor to oils and fats, pretreatment of derusting, is then coated with resistant to elevated temperatures Metal adhesive, bonding sound-absorbing material layer on inwall；
Described upper silencing net and the making of described lower silencing net: with the steel plate of 0.5mm, rush the aperture of multiple 3-5mm, and rear cutout
Limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946547.XA CN106285837A (en) | 2016-11-02 | 2016-11-02 | Single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946547.XA CN106285837A (en) | 2016-11-02 | 2016-11-02 | Single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285837A true CN106285837A (en) | 2017-01-04 |
Family
ID=57720286
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610946547.XA Pending CN106285837A (en) | 2016-11-02 | 2016-11-02 | Single-cylinder diesel engine silencer that a kind of noise reduction reduces discharging and preparation method thereof |
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| CN (1) | CN106285837A (en) |
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| CN108942092A (en) * | 2018-05-24 | 2018-12-07 | 东莞荣兴五金制品有限公司 | A kind of manufacturing method and muffler of muffler |
| CN117300624A (en) * | 2023-11-28 | 2023-12-29 | 河南驼人医疗器械研究院有限公司 | Automatic assembly production line for infusion pipeline of electronic infusion pump |
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