CN205552386U - A interfere silencer for pneumatic wrench - Google Patents
A interfere silencer for pneumatic wrench Download PDFInfo
- Publication number
- CN205552386U CN205552386U CN201620237910.6U CN201620237910U CN205552386U CN 205552386 U CN205552386 U CN 205552386U CN 201620237910 U CN201620237910 U CN 201620237910U CN 205552386 U CN205552386 U CN 205552386U
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- inner tube
- hole
- annular slab
- tube
- inlet end
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Abstract
The utility model provides an interfere silencer for pneumatic wrench, relates to a silencer, and including inner tube, outer tube, inlet end annular slab, ventilative annular slab, inlet end annular slab, ventilative annular slab are installed respectively between the inner tube and outer tube of end that advance, give vent to anger, and giving vent to anger of ventilative annular slab and outer tube forms the gas outlet between the end tip, be equipped with the through -hole A of a plurality of equipartitions on the pipe wall of inner tube, the microperforated panel of taking many miniature holes is installed at the end tip of giving vent to anger near it to the inner tube to install the stifle board that is used for the shutoff inner tube at its end tip of giving vent to anger, be equipped with the return bend mounting hole of a plurality of equipartitions on the ventilative annular slab, all install the crooked return bend of inside symmetry on each return bend mounting hole. The utility model discloses can make get into the inner tube high -velocity air through the expansion, turn back, last in a plurality of return bends export discharges of clashing, airflow energy suffers a loss greatly, its the noise reduction effect is very good, has still that the price is low, small, a light in weight, convenient to use, application scope characteristics extensively, easily uses widely.
Description
Technical field
This utility model relates to a kind of acoustic filter, a kind of interference acoustic filter for pneumatic impact spanner.
Background technology
Pneumatic tool refers mainly to gas emery wheel, pneumatic drill, pneumatic impact spanner, gas pick, pneumatic chipping hammer, Pneumatic tamping machine and pneumatic riveter
Deng, the most particularly apply the most universal on assembling line.Currently, machinery and the dress of automobile production manufacturing enterprise
Joining workshop, pneumatic impact spanner is the most frequently used pneumatic tool.Additionally, the assembling of the various machines of industry such as aircraft, boats and ships and household electrical appliances, repair
Reason and bridge construction etc. will use the multiple pneumatic tools such as pneumatic impact spanner；Piece surface rust cleaning, forge piece reaming, mill
The heavy operation such as gentle polishing also to use various pneumatic tool.Pneumatic tool, while alleviating people's labor intensity, also can
Bringing many adverse effects, noise is the pollution environmental factors that one of them is the most prominent.It is known that it is all air tool dynamic
Power both is from compressed air.Unexpected release after high pressure draught drives air tool workpiece necessarily leads to noise, every
Noise when pneumatic impact spanner normally works the most all reaches, in causing workshop, noise is in mostlyLeft
Right.And " industrial undertaking's noise sanitary standard " regulation of China's promulgation in 2002: working space operator are continuous for 8 hours every days
The health limit value sound level of contact noise is 85dB (A), often increases 3dB, and the time of contact noise day will halve.Therefore, use
Noise when pneumatic impact spanner normally works is apparently higher than national standard.
The noise exceeding sanitary standard can induce various disease, and serious infringement people's is healthy.Noise control pollutes
Healthy, prosperous and powerful concerning national economic development and country concerning numerous working people is significant.Current existing the most various respectively
The pneumatic impact spanner acoustic filter of sample, but cost is higher, and volume is bigger than normal, uses very inconvenient.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of excellent noise reduction effect, price is low, volume is little, user
Just the interference acoustic filter for pneumatic impact spanner.
The technical scheme solving above-mentioned technical problem is: a kind of interference acoustic filter for pneumatic impact spanner, including inner tube, set
Outer tube outside inner tube, also includes inlet end annular slab, ventilative annular slab, and described inlet end annular slab is arranged on inlet end
Between inner and outer tubes, ventilative annular slab is arranged between the inner and outer tubes of outlet side, this inlet end annular slab, inner tube, outer
Pipe, ventilative annular slab connect into an entirety, and form gas outlet between the end, outlet side of ventilative annular slab and outer tube；Described
The tube wall of inner tube be provided with multiple uniform through hole A, inner tube is being provided with many micro-holes near its end, outlet side
Microperforated panel, and the boring cover plate for blocking inner tube is installed in its end, outlet side；Described ventilative annular slab is provided with many
Individual uniform bend pipe installing hole, each bend pipe installing hole is mounted on the bend pipe of inside symmetric curvature.
Further technical scheme of the present utility model is: described multiple uniform through hole A is uniformly arranged on a plurality of respectively
On equidistant bus.
Further technical scheme of the present utility model is: the quantity of through hole A is 15, and these 15 through hole A are respectively by every
Bus 5, totally 3 equidistant buses are evenly distributed on the tube wall of inner tube.
Further technical scheme of the present utility model is: the inlet end end of inner tube stretches out in outer length of tube and is no less than 5mm,
The inlet end end of this inner tube is provided with a groove, and respectively installs one piece of thin plate in these groove both sides, on two pieces of thin plates
It is respectively provided with the through hole through bolt.
Further technical scheme of the present utility model is: described microperforated panel is arranged on the end, outlet side 3 away from inner tube
～at 8mm.
Further technical scheme of the present utility model is: the micro-hole aperture on microperforated panel is 0.5～2mm, hole count
Being 30～80, each micro-hole is distributed by axial symmetry on microperforated panel.
Further technical scheme of the present utility model is: this interference acoustic filter also includes mounting seat, at the bottom of this installation
Pipe that seat includes being connected in turn, rectangular tube, connecting bottom board, connecting bottom board is provided with bolt hole；Described pipe with
Inner tube links together, and connecting bottom board is connected with pneumatic impact spanner by the bolt in bolt hole and bolt hole.
Due to use said structure, the interference acoustic filter for pneumatic impact spanner of this utility model compared with prior art,
Have the advantages that
1. excellent noise reduction effect:
Owing to this utility model includes inner tube, outer tube, inlet end annular slab, ventilative annular slab, wherein inlet end annular slab
Being arranged between the inner and outer tubes of inlet end, ventilative annular slab is arranged between the inner and outer tubes of outlet side, this inlet end
Annular slab, inner tube, outer tube, ventilative annular slab connect into an entirety, and between the end, outlet side of ventilative annular slab and outer tube
Form gas outlet；The tube wall of inner tube is provided with multiple uniform through hole A, and inner tube is being provided with many near its end, outlet side
The microperforated panel of micro-hole, and the boring cover plate for blocking inner tube is installed in its end, outlet side；Ventilative annular slab is provided with
Multiple uniform bend pipe installing holes, each bend pipe installing hole is mounted on the bend pipe of inside symmetric curvature.During use, high velocity air
After pneumatic impact spanner is discharged, enter the inner tube of acoustic filter, then expand, turn back, finally carry out head-on collision row at multiple winding pipe exits
Go out.Air-flow is through this process in acoustic filter, and energy is suffered a loss greatly and realized noise reduction.Additionally, microperforated panel and boring cover plate it
Between formed resonant cavity, be also beneficial to the abatement of high-frequency noise.Therefore, noise reduction of the present utility model is the best
2. price is low:
This utility model includes inner tube, outer tube, inlet end annular slab, ventilative annular slab, and it is relatively simple for structure, with common
Steel can make this acoustic filter, advantageous compared with in expensive foreign import acoustic filter price.
3. volume is little, lightweight:
This utility model includes inner tube, outer tube, inlet end annular slab, ventilative annular slab, and volume is little, and whole acoustic filter
Main body all can be made with 0.4～0.6mm steel plate, and without any filler in acoustic filter, lightweight, it is convenient to transport and peace
Pretend industry；
The most easy to use, efficiency is high:
Owing to volume of the present utility model is little, lightweight, operate very convenient, efficiency is the highest.
The most applied widely:
This utility model can be connected with the pneumatic impact spanner of various ways by mounting seat.It is arranged on pneumatic impact spanner, also
May act as assisting handgrip.Additionally, this acoustic filter applies also for other pneumatic tools such as gas emery wheel, pneumatic drill, pneumatic impact spanner, it is fitted
Wider by scope, it is easy to promote the use of.
Below, the technical characteristic interfering acoustic filter for pneumatic impact spanner to this utility model in conjunction with the accompanying drawings and embodiments
It is further described.
Accompanying drawing illustrates:
The structural representation interfering acoustic filter for pneumatic impact spanner of this utility model described in Fig. 1: embodiment one,
The A-A sectional view of Fig. 2: Fig. 1,
The B direction view of Fig. 3: Fig. 1,
The C direction view of Fig. 4: Fig. 1,
The structural representation of bend pipe described in Fig. 5: embodiment one,
The structural representation of mounting seat described in Fig. 6: embodiment one,
The left view of Fig. 7: Fig. 6,
The structural representation interfering acoustic filter for pneumatic impact spanner of this utility model described in Fig. 8: embodiment two,
The structural representation interfering acoustic filter for pneumatic impact spanner of this utility model described in Fig. 9: embodiment three.
In above-mentioned accompanying drawing, being described as follows of each label:
1-inlet end annular slab,
2-inner tube, 21-through hole A, 22-groove, 23-thin plate, 24-bolt,
3-outer tube,
4-breathes freely annular slab, 41-bend pipe installing hole,
5-microperforated panel, 51-micro-hole,
6-boring cover plate,
7-bend pipe,
8-gas outlet,
9-mounting seat, 91-pipe, 92-rectangular tube, 93-connecting bottom board, 931-bolt hole,
M-inlet end, N-outlet side.
Detailed description of the invention
Embodiment one:
A kind of interference acoustic filter for pneumatic impact spanner (sees Fig. 1-Fig. 4), including inlet end annular slab 1, inner tube 2, outer
Pipe 3, ventilative annular slab 4, outer tube 3 is enclosed within outside inner tube 2, inlet end annular slab 1 be arranged on the inner tube 2 of inlet end M and outer tube 3 it
Between, ventilative annular slab 4 is arranged between the inner tube 2 of outlet side N and outer tube 3, this inlet end annular slab 1, inner tube 2, outer tube 3, thoroughly
Gas ring shape plate 4 connects into an entirety, and forms gas outlet 8 between the end, outlet side of ventilative annular slab 4 and outer tube 3.
The tube wall of described inner tube 2 is provided with 15 uniform through hole A21, and these 15 through hole A21 are respectively by every bus 5
Individual, totally 3 equidistant buses are evenly distributed on the tube wall of inner tube 2.It is a length of that the inlet end end of inner tube 2 stretches out in outer tube 3
6mm, the inlet end end of this inner tube 2 is provided with a groove 22, and respectively installs one piece of thin plate 23 in these groove both sides, and two
The through hole through bolt 24 it is respectively provided with on block thin plate 23.Inner tube 2 is being provided with many at the 3mm of its end, outlet side
The microperforated panel 5 of micro-hole 51, and the boring cover plate 6 for blocking inner tube 2 is installed in its end, outlet side；Microperforated panel 5 with
The abatement of resonant cavity, beneficially high-frequency noise is formed between boring cover plate 6.Micro-hole 51 aperture on microperforated panel 5 is
0.5mm, hole count is 30, and each micro-hole 51 is distributed by axial symmetry on microperforated panel 5.
Ventilative annular slab 4 is provided with on 6 uniform 41,6 bend pipe installing holes 41 of bend pipe installing hole and is inwardly mounted on
The bend pipe 7(of symmetric curvature 90 degree sees Fig. 5).
This interference acoustic filter also includes the mounting seat 9 for connecting multi-form pneumatic impact spanner, and this mounting seat 9 is wrapped
Include be connected in turn pipe 91, rectangular tube 92, connecting bottom board 93, connecting bottom board 93 is provided with bolt hole 931；Described
Pipe 91 links together with inner tube 2, and connecting bottom board 93 is connected with pneumatic impact spanner by the bolt in bolt hole 931 and bolt hole
(seeing Fig. 6-Fig. 7).
Embodiment two:
A kind of interference acoustic filter for pneumatic impact spanner, its basic structure is with embodiment one, institute's difference: described
The inlet end end of inner tube 2 stretch out in a length of 8mm of outer tube 3；Microperforated panel 5 is arranged in the end, outlet side away from inner tube 2
At 5mm；Micro-hole 51 aperture on microperforated panel 5 is 1mm, and hole count is 50；Described through hole A21 quantity is 16, should
16 through hole A21 are respectively by every bus 4, and totally 4 equidistant buses are evenly distributed on the tube wall of inner tube 2 and (see Fig. 8).
Its concrete structure is as follows:
A kind of interference acoustic filter (seeing Fig. 8) for pneumatic impact spanner, including inlet end annular slab 1, inner tube 2, outer tube 3,
Ventilative annular slab 4, outer tube 3 is enclosed within outside inner tube 2, and inlet end annular slab 1 is arranged between the inner tube 2 of inlet end M and outer tube 3, thoroughly
Gas ring shape plate 4 is arranged between the inner tube 2 of outlet side N and outer tube 3, this inlet end annular slab 1, inner tube 2, outer tube 3, ventilative annular
Plate 4 connects into an entirety, and forms gas outlet 8 between the end, outlet side of ventilative annular slab 4 and outer tube 3.
The tube wall of described inner tube 2 is provided with 16 uniform through hole A21, and these 16 through hole A21 are respectively by every bus 4
Individual, totally 4 equidistant buses are evenly distributed on the tube wall of inner tube 2.It is a length of that the inlet end end of inner tube 2 stretches out in outer tube 3
8mm, the inlet end end of this inner tube 2 is provided with a groove 22, and respectively installs one piece of thin plate 23 in these groove both sides, and two
The through hole through bolt 24 it is respectively provided with on block thin plate 23.Inner tube 2 is being provided with many at the 5mm of its end, outlet side
The microperforated panel 5 of micro-hole 51, and the boring cover plate 6 for blocking inner tube 2 is installed in its end, outlet side；Microperforated panel 5 with
The abatement of resonant cavity, beneficially high-frequency noise is formed between boring cover plate 6.Micro-hole 51 aperture on microperforated panel 5 is 1mm,
Hole count is 50, and each micro-hole 51 is distributed by axial symmetry on microperforated panel 5.
Ventilative annular slab 4 is provided with on 6 uniform 41,6 bend pipe installing holes 41 of bend pipe installing hole and is inwardly mounted on
The bend pipe 7 that symmetric curvature is 90 degree.
This interference acoustic filter also includes the mounting seat 9 for connecting multi-form pneumatic impact spanner, and this mounting seat 9 is wrapped
Include be connected in turn pipe 91, rectangular tube 92, connecting bottom board 93, connecting bottom board 93 is provided with bolt hole 931；Described
Pipe 91 links together with inner tube 2, and connecting bottom board 93 is by the bolt in bolt hole 931 and bolt hole with pneumatic impact spanner even
Connect.
Embodiment three:
A kind of interference acoustic filter for pneumatic impact spanner, its basic structure is with embodiment one, institute's difference: described
The inlet end end of inner tube 2 stretch out in a length of 10mm of outer tube 3；Microperforated panel 5 is arranged in the end, outlet side away from inner tube 2
At 8mm；Micro-hole 51 aperture on microperforated panel 5 is 2mm, and hole count is 80；Described through hole A21 quantity is 20, should
20 through hole A21 are respectively by every bus 5, and totally 4 equidistant buses are evenly distributed on the tube wall of inner tube 2 and (see Fig. 9).
Its concrete structure is as follows:
A kind of interference acoustic filter for pneumatic impact spanner, including inlet end annular slab 1, inner tube 2, outer tube 3, ventilative annular slab
4, outer tube 3 is enclosed within outside inner tube 2, and inlet end annular slab 1 is arranged between the inner tube 2 of inlet end M and outer tube 3, and ventilative annular slab 4 is pacified
Being contained between the inner tube 2 of outlet side N and outer tube 3, this inlet end annular slab 1, inner tube 2, outer tube 3, ventilative annular slab 4 connect into one
Gas outlet 8 is formed between individual entirety, and the end, outlet side of ventilative annular slab 4 and outer tube 3.
The tube wall of described inner tube 2 is provided with 20 uniform through hole A21, and these 20 through hole A21 are respectively by every bus 5
Individual, totally 4 equidistant buses are evenly distributed on the tube wall of inner tube 2.It is a length of that the inlet end end of inner tube 2 stretches out in outer tube 3
10mm, the inlet end end of this inner tube 2 is provided with a groove 22, and respectively installs one piece of thin plate 23 in these groove both sides,
It is respectively provided with the through hole through bolt 24 on two pieces of thin plates 23.Inner tube 2 is being provided with perhaps at the 8mm of its end, outlet side
The microperforated panel 5 of many micro-holes 51, and the boring cover plate 6 for blocking inner tube 2 is installed in its end, outlet side；Microperforated panel 5
And form the abatement of resonant cavity, beneficially high-frequency noise between boring cover plate 6.Micro-hole 51 aperture on microperforated panel 5 is
2mm, hole count is 80, and each micro-hole 51 is distributed by axial symmetry on microperforated panel 5.
Ventilative annular slab 4 is provided with on 6 uniform 41,6 bend pipe installing holes 41 of bend pipe installing hole and is inwardly mounted on
The bend pipe 7 that symmetric curvature is 90 degree.
This interference acoustic filter also includes the mounting seat 9 for connecting multi-form pneumatic impact spanner, and this mounting seat 9 is wrapped
Include be connected in turn pipe 91, rectangular tube 92, connecting bottom board 93, connecting bottom board 93 is provided with bolt hole 931；Described
Pipe 91 links together with inner tube 2, and connecting bottom board 93 is by the bolt in bolt hole 931 and bolt hole with pneumatic impact spanner even
Connect.
As a kind of conversion of embodiment one to embodiment three, it is long that the inlet end end of described inner tube 2 stretches out in outer tube 3
Degree is no less than 5mm；Microperforated panel 5 is arranged at the end, outlet side 3～8mm of inner tube 2；Micro-hole on microperforated panel 5
51 apertures are 0.5～2mm, and hole count is 30～80；Described through hole A21 quantity is multiple, is uniformly arranged on inner tube 2 respectively
A plurality of equidistant bus on.
Operation principle of the present utility model is as follows:
High velocity air enters inner tube 2 after pneumatic impact spanner is discharged, and then expands, turns back, finally carries out at 6 winding pipe exits
Head-on collision is discharged.Air-flow is through this process in acoustic filter, and energy is suffered a loss greatly and realized noise reduction.Additionally, inner tube 2 right-hand member is micro-
Perforated plate 5 and boring cover plate 6 form resonant cavity, are also beneficial to the abatement of high-frequency noise.
Claims (7)
1., for an interference acoustic filter for pneumatic impact spanner, including inner tube (2), it is enclosed within inner tube (2) outer tube (3) outward, its feature
It is: also including inlet end annular slab (1), ventilative annular slab (4), described inlet end annular slab (1) is arranged on inlet end (M)
Inner tube (2) and outer tube (3) between, ventilative annular slab (4) is arranged between the inner tube (2) of outlet side (N) and outer tube (3), this
Inlet end annular slab (1), inner tube (2), outer tube (3), ventilative annular slab (4) connect into an entirety, and ventilative annular slab (4) with
Gas outlet (8) is formed between the end, outlet side of outer tube (3)；The tube wall of described inner tube (2) is provided with multiple uniform through hole A
(21), inner tube is being provided with the microperforated panel (5) of many micro-holes near its end, outlet side, and pacifies in its end, outlet side
Equipped with being used for blocking the boring cover plate (6) of inner tube (2)；Described ventilative annular slab (4) is provided with multiple uniform bend pipe installing hole
(41), each bend pipe installing hole (41) is mounted on the bend pipe (7) of inside symmetric curvature.
Interference acoustic filter for pneumatic impact spanner the most according to claim 1, it is characterised in that: described is multiple uniform
Through hole A(21) it is uniformly arranged on respectively on a plurality of equidistant bus.
Interference acoustic filter for pneumatic impact spanner the most according to claim 2, it is characterised in that: quantity through hole A(21)
Be 15, these 15 through hole A(21) respectively by every bus 5, totally 3 equidistant buses are evenly distributed on the pipe of inner tube (2)
On wall.
Interference acoustic filter for pneumatic impact spanner the most according to claim 1, it is characterised in that: the inlet end of inner tube (2)
End stretches out in outer length of tube and is no less than 5mm, and the inlet end end of this inner tube (2) is provided with a groove (22), and at this groove
One piece of thin plate (23) is respectively installed in both sides, and two pieces of thin plates (23) are respectively provided with the through hole through bolt (24).
Interference acoustic filter for pneumatic impact spanner the most according to claim 1, it is characterised in that: described microperforated panel
(5) it is arranged at the end, outlet side 3～8mm of inner tube (2).
Interference acoustic filter for pneumatic impact spanner the most according to claim 1, it is characterised in that: on microperforated panel (5)
Micro-hole (51) aperture is 0.5～2mm, and hole count is 30～80, and each micro-hole (51) is upper by axial symmetry at microperforated panel (5)
Distribution.
7. according to the interference acoustic filter for pneumatic impact spanner described in claim 1 to 6 any claim, it is characterised in that:
This interference acoustic filter also includes mounting seat (9), and this mounting seat (9) includes pipe (91), the square being connected in turn
Shape pipe (92), connecting bottom board (93), connecting bottom board (93) is provided with bolt hole (931)；Described pipe (91) is with inner tube (2) even
Being connected together, connecting bottom board (93) is connected with pneumatic impact spanner by the bolt in bolt hole (931) and bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620237910.6U CN205552386U (en) | 2016-03-25 | 2016-03-25 | A interfere silencer for pneumatic wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620237910.6U CN205552386U (en) | 2016-03-25 | 2016-03-25 | A interfere silencer for pneumatic wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205552386U true CN205552386U (en) | 2016-09-07 |
Family
ID=56814693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620237910.6U Withdrawn - After Issue CN205552386U (en) | 2016-03-25 | 2016-03-25 | A interfere silencer for pneumatic wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205552386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643537A (en) * | 2016-03-25 | 2016-06-08 | 广西科技大学 | Interferential silencer for pneumatic wrench |
-
2016
- 2016-03-25 CN CN201620237910.6U patent/CN205552386U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643537A (en) * | 2016-03-25 | 2016-06-08 | 广西科技大学 | Interferential silencer for pneumatic wrench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160907 Effective date of abandoning: 20180209 |
|
| AV01 | Patent right actively abandoned |