CN209388697U - A kind of pneumatic sounding device of large-power broadband - Google Patents
A kind of pneumatic sounding device of large-power broadband Download PDFInfo
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- CN209388697U CN209388697U CN201821999230.3U CN201821999230U CN209388697U CN 209388697 U CN209388697 U CN 209388697U CN 201821999230 U CN201821999230 U CN 201821999230U CN 209388697 U CN209388697 U CN 209388697U
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Abstract
The utility model discloses a kind of pneumatic sounding device of large-power broadband, including the component that amplifies, the component that amplifies is connect with drive end bearing bracket, and drive end bearing bracket and rear end cap are detachably connected and form inner cavity；Ding Quan, which is fixed on one end, to amplify between component and drive end bearing bracket, and is connected to the channel that amplifies for the component that amplifies, and the other end protrudes into inner cavity, and deflection cone is arranged in the inner bottom surface at the end；Moving-coil includes cylinder section part and shaft part part, cylinder section part passes through big bearing and connect with drive end bearing bracket, and shaft part part is connect by small bearing with rear end cap, and cylinder section part, which is set in inner cavity, determines on circle, shaft part part is pierced by rear end cap, and is connected by shaft coupling with the output shaft of variable-frequency motor；It is set in and determines the corresponding position for determining circle of the section of the cylinder on circle part and its suit and be provided with venthole；Intake interface is set on rear end cap, and intake interface is connect with inlet suction port.The utility model discloses device compared to existing product on the market, acoustic wave energy is bigger, and sound wave output band is higher, and air consumption is low.
Description
Technical field
The utility model relates to a kind of pneumatic sounding devices of large-power broadband, can pass through the strong sound of sending adjustable frequency
Wave, to remove the accumulation of the particulate matter in the industry devices such as power generation, coal, steel, chemical industry.
Background technique
Currently, the accumulation for removing particulate matter, mainly has in the pneumatic sound wave generating device that engineering practice is applied:
Resonant cavity type sonic generator, diaphragm type sonic generator, siren sonic generator.
Resonant cavity type sonic generator and diaphragm type sonic generator are the fixed sound wave generating device of frequency, according to item
The environment at mesh scene is different, and the sound wave audible frequency of application is different.For example what is be applicable in large-scale storehouse cylinder is low-frequency sound wave
Sounding device, what middle-size and small-size occasion was applicable in is the sound wave generating device of upper frequency.For the application that reply is complicated, engineer
It needs to consider the acoustic device that takes place frequently surely using more different sizes, increases the cost used.
Siren formula sonic generator can play certain frequency modulation advantage, the sound wave of capable of emitting 100-600Hz frequency range,
Highest overall sound pressure level is greater than 140dB, and air consumption is higher, is greater than 900Nm3/h.This kind of sonic generator is applied so far, structure and property
It can not change much substantially.
In general, acoustic wave energy is bigger, better for the effect of removal particulate matter accumulation, the range of sound wave frequency modulation is got over
Width can more cope with complicated site environment, and on this basis, air consumption is lower, and gas sound transformation efficiency is higher.And current city
Sound wave sounding device on face is difficult to take into account frequency modulation and acoustic wave energy, and air consumption keeps lower level.
Summary of the invention
One of the purpose of this utility model is to provide a kind of stable high-power sound wave generating device, compared to existing sound wave
Generating device generates more powerful acoustic wave energy, increases substantially gas sound transformation efficiency.
The two of the purpose of this utility model are to provide a kind of completely new pneumatic sound wave recurring structure scheme, the organization plan energy
It is enough to obtain more wide band sound wave tuning range, it is more applicable for the demand of various application occasions.
The purpose of this utility model third is that extend sound wave generating device service life.
The technical problem to be solved by the present invention is to provide one kind compared to existing product on the market, and acoustic wave energy is more
Greatly, sound wave output band is higher, the low sound wave generating device of air consumption.
The technical solution of the utility model is as follows:
A kind of pneumatic sounding device of large-power broadband, including the component that amplifies, the component that amplifies include the channel that amplifies, and amplify portion
Part is connect with drive end bearing bracket, and drive end bearing bracket and rear end cap are detachably connected and form inner cavity；Fixed circle is tubular, and one end, which is fixed on, to amplify
It between component and drive end bearing bracket, and is connected to the channel that amplifies for the component that amplifies, the other end protrudes into inner cavity, and the inner bottom surface at the end
Deflection cone is set, and the water conservancy diversion direction of deflection cone is towards the component that amplifies；Moving-coil includes cylinder section part and shaft part part, and cylinder section part is logical
Excessive bearing is connect with drive end bearing bracket, and shaft part part is connect by small bearing with rear end cap, and cylinder section part, which is set in inner cavity, determines
On circle, shaft part part is pierced by rear end cap, and is connected by shaft coupling with the output shaft of variable-frequency motor；It is set in the cylinder determined on circle
The corresponding position for determining circle of section part and its suit is provided with venthole；Intake interface is set on rear end cap, intake interface with
Inlet suction port connection.
Further, flange is arranged in drive end bearing bracket, the flanged joint to amplify on component and drive end bearing bracket.
Further, the cylinder section part of moving-coil passes through big bearing and is mounted on the inner cavity step of drive end bearing bracket；Shaft part part is logical
Too small bearing is mounted on the inner hole step of rear end cap.
Further, the pneumatic sounding device of the large-power broadband, the component that amplifies can be megaphone.
Further, the pneumatic sounding device of the large-power broadband, the moving-coil include integrally formed cylinder section portion
Divide and shaft part part.
Further, the pneumatic sounding device of the large-power broadband, moving-coil be set in determine cylinder section part on circle with
The venthole being arranged on fixed circle is axial same position setting；Further, the set-up mode of venthole is uniformly distributed centripetal
Setting.
Further, the junction of the pneumatic sounding device of the large-power broadband, the drive end bearing bracket and rear end cap can
To be provided with sealing ring.
Further, the pneumatic sounding device of the large-power broadband, the shaft part part are pierced by the position of rear end cap
It can be sealed by axis with rotation lattice to enclose.
Further, the pneumatic sounding device of the large-power broadband, the airintake direction of inlet suction port and the axis of moving-coil
Line direction is parallel.
Further, the pneumatic sounding device of the large-power broadband, the rear end cap are connect with motor mounting rack,
Variable-frequency motor is set on motor mounting rack.
Further, the pneumatic sounding device of the large-power broadband further includes matched bracket, rear end cap and variable-frequency electric
Machine is set on matched bracket.
Further, the fixed circle selects the opposite softer material of moving-coil, prolongs axis direction same position in its outer circle
Multiple ventholes are uniformly opened, all holes are centripetal uniformly distributed design, and moving-coil is also being provided with venthole, moving-coil in corresponding position
Rotation will form the unlatching of venthole and the effect of closure, and modulation air-flow generates sound wave, moving-coil ventilation hole width and muscle width base
This is consistent.
Further, the deflection cone is installed on encloses internal bottom surely in inner cavity, guide face can be designed to justify
Cambered surface or the conical surface, guide face bottom are no more than the position for enclosing venthole aperture surely.
The pneumatic sounding device of large-power broadband provided by the utility model, is passed through compressed air by inlet suction port, pressure
Contracting air enters drive end bearing bracket and rear end cap is formed by closing inner chamber.When variable-frequency motor drives moving-coil to rotate, moving-coil and fixed
Opened when venthole on circle, when and be closed, form the valve of air-flow modulation.Air-flow is by the ventilation on moving-coil, fixed circle
It is cut when hole, along deflection cone arc surface and circle inner wall outflow surely, generation pulsation sound wave enter megaphone.
The utility model relates to working principle, it is specific as follows:
The pneumatic sounding device of large-power broadband is mainly made of fixed circle, moving-coil and driving motor.Fixed circle is a circle
Cylinder, is milled with venthole along the circumference of cylinder, and axial both ends are closed at one end, and the other end opens wide, and open side is sounding outlet.Fixed
The outside of circle closing one end, is equipped with moving-coil, moving-coil is milling venthole with fixed circle venthole same position.Moving-coil and fixed circle closing
One end be all disposed in inner cavity.Moving-coil is connected on motor shaft, can be driven by a motor rotation.Moving-coil is driven by the motor, fixed
It is covered when the venthole of circle by moving-coil, the venthole on Shi Eryu moving-coil matches, and forms the modulation valve to air-flow.
In this way, high pressure gas just generates the air-flow of pulsating nature by venthole, these air-flows can generate the medium of surrounding periodic
Pulse, to generate sound wave.The theoretical calculation of the pneumatic sounding device audible frequency of large-power broadband is F=n*N/60,
In, n is moving-coil revolving speed, can be the ventilation hole count on moving-coil by motor control, N.Led on moving-coil revolving speed or moving-coil by changing
Stomata quantity can change device sounding frequency range.
Compared with prior art, advantages and beneficial effects possessed by the utility model are as follows:
Moving-coil is fixed by big bearing and small bearing both ends in the utility model, can by designing suitable fit tolerance
Moving-coil is allowed to be maintained at stable position under high-speed rotation, further, what the gap between moving-coil and fixed circle can be designed
Very little greatly reduces evolution of the air-flow in gap, further, improves gas sound transformation efficiency.
Moving-coil is using by cylinder section and the integrally formed organization plan of shaft part in the utility model, compared to cylinder section and axis
The size and shape position precision of the design scheme of section molding assembly, the processing of this kind of structure moving-coil is higher.Further, moving-coil and
Surely the concentricity enclosed can control minimum, and further, the gap between moving-coil and fixed circle can control smaller, gas sound
Transformation efficiency is improved.
Modulating generation sound wave by air-flow in the utility model is in the cylinder section part of moving-coil, the design of moving-coil cylinder section part
Biggish space is provided to design big air-flow modulation valve.Further, at same time, the valve of air-flow modulation
The throughput of reason is bigger, and further, the acoustical power which generates is higher.
The width of venthole circumferencial direction in the utility model on moving-coil is consistent substantially with the width of muscle thereon,
During moving-coil rotates, it is ensured that open, the continuous consistency of the structural improvement gas consistent with closing time in hole
While, increase as far as possible air-flow by flow, improve sounding power.
The inner cavity Ding Quan is designed using deflection cone in the utility model, after pulse pneumatic passes through the hole on the circumference enclosed surely,
Along deflection cone, prolong fixed circle inner wall outflow.It reduces air-flow to liquidate the energy loss of generation, further improves the conversion of gas sound
Efficiency.
In the utility model, the air-flow entered along inlet suction port conduit is parallel with moving-coil axis direction, will not directly rush
It hits or squeezes moving-coil to deviate to a certain side, vibrate, can further reduce dynamic so that moving-coil bring in rotation can be reduced
Torque required for circle rotates, being conducive to motor can run at higher rotational speeds with moving-coil, and it is wider to generate frequency range
Sound wave.
Moving-coil material is higher than determining loop material matter hardness in the utility model.When between equipment initial operating stage, moving-coil and fixed circle
Adjustment, the softer position for determining circle fine protrusions can be cut off by moving-coil, take out of with air-flow, will not generate because of moving-coil and enclose phase surely
The adhesive wear that same material generates can further reduce the fluctuation that motor drives the torque of moving-coil to occur, be conducive to moving-coil
High-speed rotation and the service life for extending motor.
Moving-coil and the venthole enclosed surely are using uniformly centripetal design in the utility model, when high-speed flow passes through,
The centripetal scouring force for producing to moving-coil and enclosing surely, scouring force are cancelled out each other, and the unfavorable of unbalance stress generation has effectively been evaded
Vibration, extends the service life of equipment.
Drive end bearing bracket rear end cap forms sounding cavity in the utility model, and moving-coil forms pneumatic operated valve relative to circle rotation surely
Door, fixed circle are conducive to the disassembly and replacement of fixed circle using relative to sounding cavity, moving-coil installation by adhering outside in.
Detailed description of the invention
Fig. 1 is the pneumatic sounding device structural schematic diagram of large-power broadband that the utility model embodiment 1 provides；
Fig. 2 is the pneumatic sounding device structural upright schematic diagram of large-power broadband that the utility model embodiment 1 provides；
Fig. 3 is the part of inner bore cavity in the pneumatic sounding device of large-power broadband of the offer of the utility model embodiment 1
Structural schematic diagram；
Fig. 4 is the dress enclosed surely in the pneumatic sounding device of large-power broadband of the offer of the utility model embodiment 1 with moving-coil
With schematic diagram；
In figure 1 above-Fig. 4,1 is the component that amplifies, and 2 be drive end bearing bracket, and 3 be fixed circle, and 4 be deflection cone, and 5 be moving-coil, and 6 be big axis
It holds, 7 be small bearing, and 8 be sealing ring, and 9 be rear end cap, and 10 are enclosed for axis with rotation lattice, and 11 be shaft coupling, and 12 be inlet suction port,
13 be motor mounting rack, and 14 be variable-frequency motor, and 15 be matched bracket.
Specific embodiment
The pneumatic sounding device of large-power broadband provided by the utility model is further described below in conjunction with attached drawing.
Embodiment 1
A kind of pneumatic sounding device of large-power broadband is present embodiments provided, as depicted in figs. 1 and 2, including the portion that amplifies
Part 1, the component 1 that amplifies include the channel that amplifies, and the component 1 that amplifies is connect with drive end bearing bracket 2, and drive end bearing bracket 2 and rear end cap 9 are detachably connected simultaneously
Form inner cavity；Surely circle 3 is tubular, and one end, which is fixed on, to amplify between component 1 and drive end bearing bracket 2, and logical with amplifying for the component that amplifies
Road connection, the other end protrude into inner cavity, and deflection cone 4 is arranged in the inner bottom surface at the end, and the water conservancy diversion direction direction of deflection cone 4 amplifies
Component 1；Moving-coil 5 includes cylinder section part and shaft part part, and cylinder section part passes through big bearing 6 and connect with drive end bearing bracket 2, and shaft part part is logical
Too small bearing 7 is connect with rear end cap 9, and cylinder section part, which is set in inner cavity, determines on circle 3, and shaft part part is pierced by rear end cap 9, and leads to
Shaft coupling 11 is crossed to be connected with the output shaft of variable-frequency motor 14；Circle 3 is determined in the cylinder section part and its suit being set on fixed circle 3
Corresponding position is provided with venthole；Intake interface is set on rear end cap 9, and intake interface is connect with inlet suction port 12.
Fig. 2 is the stereoscopic schematic diagram of the pneumatic sounding device of large-power broadband provided in this embodiment, it can be seen that air inlet
Set-up mode of the connector 12 on rear end cap 9.
Further, as shown in figure 3, the component 1 that amplifies is megaphone, moving-coil 5 includes integrally formed cylinder section portion
Divide and shaft part part, drive end bearing bracket 2 and the junction of rear end cap 9 are provided with sealing ring 8, the shaft part part is pierced by rear end cap 9
Position is enclosed 10 with rotation lattice by axis and is sealed；
Further, the rear end cap 9 is connect with motor mounting rack 13, and variable-frequency motor 14 is set to motor mounting rack
On 13, rear end cap 9 and variable-frequency motor 14 are set on matched bracket 15.
Embodiment 2
The present embodiment is further improvement on that basis of example 1, and large-power broadband provided in this embodiment is pneumatic
Sounding device, megaphone are designed using exponential curve, and acoustic wave inlet flange is connected with 2 flange hole of drive end bearing bracket, by
Screw is fixed.Surely 3 installation steps are enclosed between 2 flange of 1 flange of megaphone and drive end bearing bracket, 3 main bodys is enclosed surely and protrudes into outside in
Front end cover cavity encloses 3 bottoms surely and is equipped with deflection cone 4.5 section steps of moving-coil are mounted on 2 inner cavity platform of drive end bearing bracket by big bearing 6
At rank, what big bearing 6 was selected is deep groove ball bearing, and big bearing 6 controls the gap between moving-coil 5 and surely circle 3.5 shaft part of moving-coil
Part is mounted on 9 inner hole step of rear end cap by small bearing 7, and what small bearing 7 was selected is also deep groove ball bearing.Drive end bearing bracket 2 is with after
End cap 9 is connected by screw to fastening, is equipped with O-ring seal between them.The mounting hole of 9 horizontal direction side of rear end cap with
Inlet suction port 12 is connected.Rear end cap 9 is connected with motor mounting rack 13 with screw, motor mounting rack 13 and variable-frequency motor
14 are connected using screw, and what variable-frequency motor 14 was selected is 1.5kW-380V-B35 variable-frequency motor.Rear end is stretched out in 5 shaft part part of moving-coil
Lid 9 encloses 10 with rotation lattice using axis between them and is sealed.What shaft coupling 11 was selected is plum coupling.Matched bracket
15 are placed in device bottom, and one end is connected by screw to 9 outer circle upper installing hole of rear end cap, the other end and 14 bottom of variable-frequency motor
Mounting flange connection.
Surely the circle 3 is, compared with softwood matter, using harder material, the difference of hardness between them is beneficial to prevent moving-coil 5
Generate adhesive wear.Surely 3 outer circles are enclosed prolong axis direction and uniformly opened 8 kidney-shaped ventholes, symmetrical centripetal design, moving-coil 5 exists
Venthole is opened in corresponding position, the venthole of moving-coil 5 is greater than the venthole enclosed surely, and the rotation of moving-coil 5 will form opening for venthole
The effect for opening and being closed.The muscle of moving-coil 5 is wide identical with slit width, which can guarantee during moving-coil 5 rotates, Kong Kaiqi
It is consistent with closing time, while the continuous consistency of the structural improvement gas, passing through for air-flow is increased as far as possible
Flow improves sounding power.Venthole setting is as shown in Figure 4.
The deflection cone 4 is designed using arc surface, and water conservancy diversion circular arc bottom edge is flushed with the position for enclosing 3 apertures surely.
The inlet suction port 12 is by the inside and outside silk elbows of 90 degree of GB/T3287 standard application DN32 type A4 type, outside inlet suction port 12
Silk is connect with 9 threaded hole of rear end cap, and the axis direction of screw thread is parallel to 5 axis direction of moving-coil.Inlet suction port internal thread screw thread with
The outer silk of mating air inlet pipe is connected, and there are two threaded holes on the flange that motor mounting rack 13 and rear end cap 9 cooperate, and is auxiliarily fixed
Inlet suction port 12 and mating air inlet pipe prevent its rotation from the connection of inlet suction port 12 and rear end cap 9 being caused to loosen.
The inlet suction port 12 is passed through compressed air, and compressed air enters drive end bearing bracket and rear end cap is formed by closing sky
Chamber.When variable-frequency motor 14 drive moving-coil 5 rotate, moving-coil 5 and surely circle 3 on venthole when and open, when and be closed, formation gas
Flow the valve of modulation.Air-flow is cut in the venthole by moving-coil 5, surely on circle 3, encloses 3 along deflection cone arc surface and surely
Inner wall outflow generates pulsation sound wave and enters megaphone 1, generates high-power sound wave.
Claims (9)
1. a kind of pneumatic sounding device of large-power broadband, which is characterized in that including the component that amplifies (1), the component that amplifies (1) includes
Amplify channel, and the component that amplifies (1) is connect with drive end bearing bracket (2), and drive end bearing bracket (2) and rear end cap (9) are detachably connected and form inner cavity；
Fixed circle (3) is tubular, and one end is fixed between the component that amplifies (1) and drive end bearing bracket (2), and is connected with the channel that amplifies for the component that amplifies
Logical, the other end protrudes into inner cavity, and deflection cone (4) are arranged in the inner bottom surface at the end, and the water conservancy diversion direction direction of deflection cone (4) amplifies
Component (1)；Moving-coil (5) includes cylinder section part and shaft part part, and cylinder section part passes through big bearing (6) and connect with drive end bearing bracket (2), axis
Section part is connect by small bearing (7) with rear end cap (9), and cylinder section part, which is set in inner cavity, determines on circle (3), and shaft part part is worn
Rear end cap (9) out, and be connected by shaft coupling (11) with the output shaft of variable-frequency motor (14)；The cylinder being set on fixed circle (3)
The corresponding position for determining circle (3) of section part and its suit is provided with venthole；Intake interface, air inlet is arranged on (9) in rear end cap
Interface is connect with inlet suction port (12).
2. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that the component that amplifies (1)
For megaphone.
3. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that the moving-coil (5) includes
Integrally formed cylinder section part and shaft part part.
4. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that the drive end bearing bracket (2) with
The junction of rear end cap (9) is provided with sealing ring (8).
5. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that the shaft part part is pierced by
The position of rear end cap (9) is enclosed (10) with rotation lattice by axis and is sealed.
6. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that inlet suction port (12) into
Gas direction is parallel with the axis direction of moving-coil (5).
7. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that the rear end cap (9) with
Motor mounting rack (13) connection, variable-frequency motor (14) are set on motor mounting rack (13).
8. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that further include matched bracket
(15), rear end cap (9) and variable-frequency motor (14) are set on matched bracket (15).
9. the pneumatic sounding device of large-power broadband according to claim 1, which is characterized in that be set on fixed circle (3)
Cylinder section part and fixed circle (3) on the venthole that is arranged be centripetal design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999230.3U CN209388697U (en) | 2018-11-30 | 2018-11-30 | A kind of pneumatic sounding device of large-power broadband |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999230.3U CN209388697U (en) | 2018-11-30 | 2018-11-30 | A kind of pneumatic sounding device of large-power broadband |
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| Publication Number | Publication Date |
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| CN209388697U true CN209388697U (en) | 2019-09-13 |
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ID=67870133
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109410910A (en) * | 2018-11-30 | 2019-03-01 | 南京常荣声学股份有限公司 | A kind of pneumatic sounding device of large-power broadband |
| CN113506555A (en) * | 2021-07-20 | 2021-10-15 | 中国计量大学 | Rotary flute sound wave sounding device |
-
2018
- 2018-11-30 CN CN201821999230.3U patent/CN209388697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109410910A (en) * | 2018-11-30 | 2019-03-01 | 南京常荣声学股份有限公司 | A kind of pneumatic sounding device of large-power broadband |
| CN113506555A (en) * | 2021-07-20 | 2021-10-15 | 中国计量大学 | Rotary flute sound wave sounding device |
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