Low-noise dual-output whistle type sound wave soot blower

Abstract

The utility model discloses a low-noise double-output whistle type sound wave soot blower, which comprises a driving motor, a sound wave amplifier and two symmetrical sound wave generators, each sound wave generator comprises a cavity shell I, a cavity shell II, a sound production disc and a sound absorption disc, the sound production disc is provided with cutting holes, the cutting holes are arranged on the sound production disc in a circumferential arrangement mode, and the sound absorption disc is arranged on the cavity shell II. A spacer is arranged on the inner wall of the first cavity shell, and a ventilation hole is formed in the spacer. According to the scheme, one driving motor drives the two sound wave generators, the two sound wave generators can be driven to work at the same time, one of the two sound wave generators can be selectively started according to needs, and the utilization rate of the driving motor is high. The sound absorption disc absorbs sound waves which are not transmitted into the extension tube, the purpose of noise reduction is achieved, meanwhile, the distance between the extension tube and the sound production disc is set to be 1-2 mm, it is further guaranteed that the sound waves are directly transmitted into the extension tube as much as possible, and sound wave expansion is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of flute-type acoustic soot blowers, specifically a low-noise dual-output rotary flute-type acoustic soot blower. Background Technology

[0002] The rotary whistle-type sootblower is now widely used in industries such as power and petrochemicals. It boasts advanced technology, reliable performance, and continuous technological breakthroughs and innovations. This sootblower uses a wide-frequency adjustable sound source ranging from 100-600Hz, featuring long wavelengths, large amplitudes, slow energy attenuation, strong diffraction and reflection capabilities, and large vibration displacement amplitude. Using sootblowing, the sound waves can reach the entire space, generating reverberation within the furnace without leaving any dead zones, establishing a balanced energy field. Air and wall surfaces absorb little sound wave, resulting in a large effective cleaning area. It also avoids generating corrosive moisture, preventing corrosion and damage to the pipe surfaces. This is unparalleled by previous sootblowing equipment.

[0003] The rotary whistle-type acoustic soot blower mainly consists of an acoustic generator and an acoustic conduit. The acoustic generator includes an acoustic modulator and a variable frequency speed control motor. During operation, the variable frequency speed control motor drives the disc shaft inside the acoustic modulator to rotate, continuously cutting off the air supply channel. This repeated cycle creates airflow disturbance, thereby generating continuous high-intensity sound pressure level acoustic energy. Finally, this energy is transmitted to the working space through the acoustic conduit, achieving the acoustic soot blowing effect.

[0004] Existing sound wave generators often employ a design where one drive motor powers one sound wave generator, which reduces the utilization rate of the drive motor. Furthermore, when generating sound waves through air cutting, a large portion of the sound waves is transmitted to the sound amplifier, while another portion propagates through the materials of the equipment itself into the workplace, generating significant noise and causing noise pollution. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The technical problem this invention aims to solve is that existing sound wave generators often employ a design where one drive motor powers one sound wave generator, which reduces the utilization rate of the drive motor. Furthermore, when generating sound waves by cutting air, a large portion of the sound waves is transmitted to the sound amplifier, while another portion propagates through the materials of the equipment itself into the workplace, generating significant noise and causing noise pollution.

[0007] (II) Technical Solution

[0008] To solve the above problems, this utility model provides the following technical solution:

[0009] A low-noise dual-output rotary flute-type soot blower includes a drive motor, a sonic amplifier, and two symmetrical sonic generators, with the drive motor positioned between the two sonic generators.

[0010] The sound wave generator includes a cavity shell 1, a cavity shell 2, a sound-emitting plate, and a sound-absorbing plate. A sealing ring is provided between the cavity shell 1 and the cavity shell 2, and both the cavity shell 1 and the cavity shell 2 are provided with grooves. After the cavity shell 1 and the cavity shell 2 are connected, the two grooves form an annular recessed groove. The sound-emitting plate is disposed between the cavity shell 1 and the cavity shell 2, and the outer edge of the sound-emitting plate is disposed in the two grooves. The sound-emitting plate can rotate freely in the grooves.

[0011] The sound-generating disc is provided with cutting holes, which are arranged in a circular pattern on the sound-generating disc;

[0012] A partition is provided on the inner wall of the cavity shell, a ventilation hole is provided on the partition, and an air inlet pipe is provided on the cavity shell. One end of the air inlet pipe is connected to an external air storage tank, and the other end extends into the interior of the cavity shell.

[0013] The outer shell of the cavity is also provided with a connecting shaft. One end of the connecting shaft is fixedly connected to the sound-generating disk, and the other end is provided with a pulley. The connecting shaft is connected to the outer shell of the cavity and the partition through sealed bearings.

[0014] The cavity shell 2 is provided with an extension tube. One end of the extension tube extends into the interior of the cavity shell 2 and the distance between it and the sound-emitting plate is controlled to be 1 mm to 2 mm. The other end of the extension tube is connected to the sound wave amplifier.

[0015] The sound-absorbing plate is disposed on the inner side of the outer shell of the cavity;

[0016] The pulleys on both sound wave generators are connected to the shaft of the drive motor via synchronous pulleys and synchronous belts.

[0017] Furthermore, each of the sound wave generators has a support base at its bottom, and a motor mounting base is provided between the two support bases.

[0018] Furthermore, the support base includes an arc-shaped support base plate, a limiting plate, a shock-absorbing pad, and a bracket. The shock-absorbing pad is disposed between the sound wave generator and the support base plate. The support base plate is fixedly disposed on the bracket. The limiting plate has two symmetrically disposed on both sides of the support base plate, and the sound wave generator is clamped onto the support base by means of bolts and nuts.

[0019] Furthermore, the outer edge of the partition is fixedly connected to the inner wall of the first cavity shell, and the ventilation hole and the tube portion of the extension tube extending into the second cavity shell are coaxially arranged.

[0020] Furthermore, it also includes a protective enclosure, with the drive motor, the support base, and the sound wave generator disposed inside the enclosure.

[0021] Furthermore, both the extension pipe and the air intake pipe extend to the outside of the housing.

[0022] Furthermore, a set of symmetrically openable maintenance covers are provided at the top of the housing, and the maintenance covers are connected to the housing via hinges.

[0023] Furthermore, the sound-absorbing plate is made of sound-absorbing cotton and is connected to the outer shell of the cavity by adhesive bonding.

[0024] (III) Beneficial Effects

[0025] The beneficial effects of this utility model are:

[0026] 1. In this solution, a drive motor drives two sound wave generators, which can drive both sound wave generators to work simultaneously. Furthermore, one of the two sound wave generators can be selectively turned on as needed, resulting in high utilization of the drive motor.

[0027] 2. This solution uses a sound-absorbing plate to absorb sound waves that do not reach the extension tube, thus reducing noise. At the same time, the distance between the extension tube and the sound-generating plate is set to 1-2mm to further ensure that the sound waves can be transmitted directly into the extension tube as much as possible, reducing the sound waves that are transmitted outside the extension tube and reducing the propagation of noise.

[0028] 3. By setting baffles and through holes on the baffles, the air source provided by the air tank is guided, which increases the speed at which the air source enters the cutting hole on the sound-generating plate and the stability of the airflow, thereby improving the efficiency of sound wave generation.

[0029] 4. By setting a portion of the outer edge of the sound-generating disc in the space formed by the combination of two grooves, excessive air leakage into the extension tube through the sound-generating disc is prevented, thus improving the utilization rate of the air source. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0031] Figure 2 This is a perspective view of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the sound wave generator of this utility model;

[0033] Figure 4 This is a cross-sectional view of the sound wave generator of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the sound-generating disc of this utility model.

[0035] The markings in the diagram are: 1-Drive motor, 2-Sound amplifier, 3-Sound generator, 4-Support base, 5-Box, 6-Inspection cover, 7-Motor mounting base;

[0036] 301-Cavity outer shell one, 302-Cavity outer shell two, 303-Sound-generating plate, 304-Sound-absorbing plate, 306-Sealing ring, 307-Groove, 308-Cutting hole, 309-Ventilation hole, 310-Air inlet pipe, 311-Connecting shaft, 312-Pulley, 313-Extension pipe;

[0037] 401-Supporting base plate, 402-Limiting plate, 403-Shock-absorbing pad, 404-Bracket. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Please see Figures 1-5The low-noise dual-output rotary whistle-type soot blower shown includes a drive motor 1 and a sonic amplifier 2, as well as two symmetrical sonic generators 3. The drive motor 1 is positioned between the two sonic generators 3. The drive motor 1 provides power to the sonic generators 3, which cut the gas source supplied by the gas tank to generate sonic waves, and then transmit the sonic waves to the sonic amplifier 2.

[0041] The sound wave generator 3 includes a cavity shell 301, a cavity shell 302, a sound-generating disk 303, and a sound-absorbing disk 304. A sealing ring 306 is provided between the cavity shell 301 and the cavity shell 302, and both the cavity shell 301 and the cavity shell 302 are provided with grooves 307. After the cavity shell 301 and the cavity shell 302 are connected, the two grooves 307 form an annular recessed groove. The sound-generating disk 303 is disposed between the cavity shell 301 and the cavity shell 302, and the outer edge of the sound-generating disk 303 is disposed in the two grooves 307, and the sound-generating disk 303 can rotate freely in the grooves 307.

[0042] The cavity shell 301 and the cavity shell 302 are locked together by bolts. To ensure sufficient airtightness during connection, a sealing gasket 306 is designed between them. To prevent excessive leakage of air from the cavity shell 301 into the cavity shell 302, a groove 307 is designed in both the cavity shell 301 and the cavity shell 302. The edge of the generating disk 303 is designed into the recessed groove formed by the merging of the two grooves 307.

[0043] To cut the air source, a cutting hole 308 is provided on the sound-generating disk 303. The cutting holes 308 are arranged in a circular pattern on the sound-generating disk 303. When the air source passes through the cutting hole 308 on the sound-generating disk 307, it is cut and thus generates sound waves.

[0044] A partition 305 is provided on the inner wall of the outer shell 301 of the cavity. The partition 305 separates the air source from the generating plate 307. In order to ensure that the air source flows to the generating plate 307 from one position, a ventilation hole 309 is provided on the partition 305. This can improve the utilization efficiency of the air source to a certain extent, reduce unnecessary air source loss and waste, and at the same time reduce the direct contact between the air source and the plate surface of the generating plate 307, reduce the resistance of the rotating plate 307, and also prevent the generating plate 307 from deforming due to long-term impact from the air source.

[0045] Furthermore, an air inlet pipe 310 is provided on the outer shell 301 of the cavity. One end of the air inlet pipe 310 is connected to an external air storage tank, and the other end extends into the interior of the outer shell 301 of the cavity. The air source is input into the outer shell 301 of the cavity through the air storage tank via the air inlet pipe 310.

[0046] A connecting shaft 311 is also provided on the outer shell 301 of the cavity. One end of the connecting shaft 311 is fixedly connected to the sound-generating disk 303, and the other end is provided with a pulley 312. The connecting shaft 311 is connected to the outer shell 301 and the partition 305 through sealed bearings. A rotatable connecting shaft 311 is designed to enable the sound-generating disk 303 to rotate. The rotation of the connecting shaft 311 drives the sound-generating disk 303 to rotate. The rotational power of the connecting shaft 311 is obtained from the drive motor 1.

[0047] An extension tube 313 is provided on the outer shell 302 of the cavity. In order to transmit sound waves to the sound amplifier 2 as much as possible, one end of the extension tube 313 is extended into the interior of the outer shell 302 and the distance between it and the sound-generating disk 303 is controlled to be 1 mm to 2 mm. This ensures that the distance between the two is as small as possible without interfering with the rotation of the sound-generating disk 307. The other end of the extension tube 313 is connected to the sound amplifier.

[0048] To achieve noise reduction, a sound-absorbing plate 304 was designed and placed at the location where the air source has been cut to generate sound waves, specifically on one side of the cavity shell 302. The sound-absorbing plate 304 is placed on the inner side of the cavity shell 302 to absorb the part of the sound waves that are not transmitted to the sound wave amplifier 2, thereby improving the noise reduction capability of the equipment and reducing the noise pollution caused.

[0049] Because of the dual-output design, the pulleys 312 on both sound generators 3 are connected to the shaft of the drive motor 1 via synchronous pulleys and belts. Using one drive motor 1 to power both sound generators 3 improves the utilization of the driving power source. Furthermore, in specific installation environments, the cost of this device is lower than that of a single motor driving a single sound generator. Additionally, if selective operation of the sound generator 307 is required, a control valve can be designed between the air inlet pipe 310 and the air tank to selectively activate one of the sound generators 307.

[0050] Specifically, each sound wave generator 3 has a support base 4 at its bottom, and a motor mounting seat 7 is provided between two support bases 4. The support base 4 includes an arc-shaped support plate 401, a limiting plate 402, a rubber shock-absorbing pad 403, and a bracket 404. The shock-absorbing pad 403 is placed between the sound wave generator 3 and the support plate 401. The support plate 401 is fixedly mounted on the bracket 404. The limiting plate 402 has two symmetrically arranged on both sides of the support plate 401, and the sound wave generator 3 is clamped to the support base 4 by bolts and nuts.

[0051] In this embodiment, the support base 3 is mainly used to support and fix the sound wave generator 307. When the sound wave generator 307 is working, the sound waves it generates will also cause the main body to vibrate to a certain extent. The designed rubber vibration damping pad 403 can effectively absorb this vibration, improve the stability of equipment operation, and reduce the propagation of noise.

[0052] Specifically, the outer edge of the partition 305 is fixedly connected to the inner wall of the cavity shell 301, and the ventilation hole 309 and the extension tube 313 are coaxially arranged in the tube portion extending into the cavity shell 302.

[0053] In this embodiment, in order to allow the sound waves generated by the cutting of the air source to enter the extension pipe 313 with minimal attenuation and minimal refraction, the ventilation hole 309 and the extension pipe 313 are set on the same axis.

[0054] Specifically, it also includes a protective enclosure 5, with the drive motor 1, support base 4, and sound wave generator 3 housed inside the enclosure 5. The extension pipe 313 and air inlet pipe 310 both extend to the outside of the enclosure 5. A set of symmetrically openable inspection covers 6 are provided at the top of the enclosure 5, and the inspection covers 6 are connected to the enclosure 5 via hinges. The sound-absorbing plate 304 is made of sound-absorbing cotton and is glued to the outer shell 302 of the cavity.

[0055] In this implementation plan, the designed enclosure 5 enhances the overall aesthetics of the equipment, protects the internal structure, and also blocks noise to a certain extent, reducing the transmission of noise into the external space.

[0056] Working principle:

[0057] The air source enters the outer shell 301 of the cavity through the external air storage tank and the air inlet pipe 310. Then it flows into the position of the generating plate 307 through the vent 309 on the partition. The generating plate 307 rotates at high speed driven by the connecting shaft 311. The air source flowing through the cutting hole 308 is cut by the cutting hole 308 and generates sound waves. The generated sound waves are immediately transported to the sound wave amplifier 2 through the extension pipe 313 and act on the equipment that needs to be cleaned.

[0058] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-noise dual-output rotary whistle-type soot blower, comprising a drive motor (1) and a sound amplifier (2), characterized in that: It also includes two symmetrical sound wave generators (3), and the drive motor (1) is located between the two sound wave generators (3); The sound wave generator (3) includes a cavity shell one (301), a cavity shell two (302), a sound-generating disk (303), and a sound-absorbing disk (304). A sealing ring (306) is provided between the cavity shell one (301) and the cavity shell two (302). Both the cavity shell one (301) and the cavity shell two (302) are provided with grooves (307). After the cavity shell one (301) and the cavity shell two (302) are connected, the two grooves (307) form an annular recessed groove. The sound-generating disk (303) is disposed between the cavity shell one (301) and the cavity shell two (302). The outer edge of the sound-generating disk (303) is disposed in the two grooves (307), and the sound-generating disk (303) can rotate freely in the grooves (307). The sound-generating disk (303) is provided with cutting holes (308), and the cutting holes (308) are arranged in a circular pattern on the sound-generating disk (303); The inner wall of the cavity shell (301) is provided with a partition (305), the partition (305) is provided with a ventilation hole (309), and the cavity shell (301) is provided with an air inlet pipe (310). One end of the air inlet pipe (310) is connected to an external air storage tank, and the other end extends into the interior of the cavity shell (301). The cavity shell (301) is also provided with a connecting shaft (311). One end of the connecting shaft (311) is fixedly connected to the sound-generating disc (303), and the other end is provided with a pulley (312). The connecting shaft (311) is connected to the cavity shell (301) and the partition (305) through sealed bearings. The cavity shell 2 (302) is provided with an extension tube (313), one end of the extension tube (313) extends into the interior of the cavity shell 2 (302) and the distance between it and the sound-emitting plate (303) is controlled between 1 mm and 2 mm, and the other end of the extension tube (313) is connected to the sound wave amplifier; The sound-absorbing plate (304) is disposed on the inner side of the outer shell of the cavity (302); The pulleys (312) on both sound wave generators (3) are connected to the shaft of the drive motor (1) by means of a synchronous pulley and a synchronous belt.

2. The low-noise dual-output rotary whistle-type acoustic soot blower according to claim 1, characterized in that: Each of the sound wave generators (3) has a support base (4) at its bottom, and a motor mounting base (7) is provided between the two support bases (4).

3. The low-noise dual-output rotary whistle-type soot blower according to claim 2, characterized in that: The support base (4) includes an arc-shaped support base plate (401), a limiting plate (402), a shock-absorbing pad (403), and a bracket (404). The shock-absorbing pad (403) is disposed between the sound wave generator (3) and the support base plate (401). The support base plate (401) is fixedly disposed on the bracket (404). The limiting plate (402) has two symmetrically disposed on both sides of the support base plate (401), and the sound wave generator (3) is clamped onto the support base (4) by means of bolts and nuts.

4. The low-noise dual-output rotary whistle type acoustic soot blower according to claim 1, characterized in that: The outer edge of the partition (305) is fixedly connected to the inner wall of the first cavity shell (301), and the ventilation hole (309) and the extension tube (313) are coaxially arranged in the tube portion extending into the second cavity shell (302).

5. The low-noise dual-output rotary whistle-type acoustic soot blower according to claim 3, characterized in that: It also includes a protective housing (5), and the drive motor (1), the support base (4) and the sound wave generator (3) are disposed inside the housing (5).

6. The low-noise dual-output rotary whistle-type acoustic soot blower according to claim 5, characterized in that: Both the extension pipe (313) and the air inlet pipe (310) extend to the outside of the housing (5).

7. The low-noise dual-output rotary whistle type acoustic soot blower according to claim 6, characterized in that: The top of the housing (5) is provided with a set of symmetrically openable maintenance covers (6), and the maintenance covers (6) are connected to the housing (5) by hinges.

8. The low-noise dual-output rotary whistle type acoustic soot blower according to claim 1, characterized in that: The sound-absorbing plate (304) is made of sound-absorbing cotton and is connected to the outer shell of the cavity (302) by adhesive.

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