Ultra-clean semi-dry desulfurization and dust removal device
By combining acoustic and pulse dust removal components in a semi-dry desulfurization and dust removal device, real-time monitoring and dust removal during operation are achieved, solving the problems of filter bag clogging and short lifespan, and improving the operating efficiency of the device and the durability of the filter bags.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO YUANDING GROUP
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-15
AI Technical Summary
In existing semi-dry desulfurization and dust removal devices, the use of single pulse jet cleaning leads to a reduction in the service life of filter bags and an increase in the frequency of shutdown for cleaning.
Combining acoustic dust removal components and pulse dust removal components, the filter bag clogging is monitored using pressure sensors. Acoustic cleaning is performed during unit operation, and pulse jet cleaning is performed when the unit is stopped, reducing physical damage and clogging.
It extends the service life of the filter bags, reduces the frequency of downtime for dust cleaning, and improves the operating efficiency of the equipment and the durability of the filter bags.
Smart Images

Figure CN224236360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of semi-dry desulfurization and dust removal devices, and in particular to an ultra-clean semi-dry desulfurization and dust removal device. Background Technology
[0002] Semi-dry desulfurization technology is a desulfurization method between wet and dry methods. Its desulfurization efficiency and desulfurizing agent utilization rate are also between the two. This method is mainly suitable for flue gas treatment of small and medium-sized boilers. The characteristics of this technology are low investment, low operating cost, low corrosiveness and small footprint.
[0003] However, in the existing technology, it has been found that some semi-dry desulfurization and dust removal devices only use a single pulse jet to clean the filter bags in the semi-dry desulfurization and dust removal device, which leads to an increase in the frequency of shutdown for cleaning and a reduction in the service life of the filter bags. Utility Model Content
[0004] The purpose of this invention is to solve the problems existing in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-clean semi-dry desulfurization and dust removal device, comprising: a flue gas inlet, an absorption tower fixedly connected to the top of the flue gas inlet, a connecting pipe fixedly connected to the top of one side of the absorption tower, a dust removal chamber fixedly connected to the other end of the connecting pipe, a plurality of support rods fixedly connected to one side of the absorption tower, the other ends of the plurality of support rods fixedly connected to one side of the dust removal chamber, an exhaust pipe fixedly connected to the top of the other side of the dust removal chamber, the inner cavities of the flue gas inlet, the absorption tower, the connecting pipe, the dust removal chamber and the exhaust pipe being interconnected, mounting holes being provided through the four corners on both sides of the dust removal chamber, a pulse dust removal component being provided on the top of the dust removal chamber, and an acoustic dust removal component being provided inside the plurality of mounting holes.
[0006] Furthermore, support legs are fixedly connected to the four corners of the bottom of the dust removal chamber, a discharge pipe is fixedly embedded in the bottom of the dust removal chamber, the inner cavity of the dust removal chamber is connected to the discharge pipe, an electrically controlled valve is installed in the inner cavity of the discharge pipe, four fixing plates are fixedly connected to both sides of the dust removal chamber, and multiple fixing holes are opened through the top of one side of the dust removal chamber.
[0007] Furthermore, guide plates are fixedly connected to three sides of one end of the dust collection chamber's inner cavity. An installation plate is fixedly embedded in one side of the dust collection chamber's inner cavity and the guide plates. Multiple filter bags are embedded inside the installation plate, and a skeleton is embedded in the inner cavity of each of the multiple filter bags. Pressure sensor 1 and sensor 2 are fixedly connected to the bottom and top of one end of the installation plate, respectively. A compressed air main pipe is connected to one side of the dust collection chamber. Three compressed air branch pipes 1 are fixedly connected to the top of the compressed air main pipe. The other ends of two of the compressed air branch pipes 1 are each connected to two compressed air branch pipes 2. The inner cavities of the compressed air main pipe, the three compressed air branch pipes 1, and the four compressed air branch pipes 2 are interconnected. Multiple support rods 2 are fixedly connected to the surfaces of the compressed air main pipe, the three compressed air branch pipes 1, and the four compressed air branch pipes 2. The other ends of the multiple support rods 2 are fixedly connected to the surface of the dust collection chamber.
[0008] Furthermore, the pulse dust removal assembly includes an air storage tank, one end of which is fixedly connected to an air inlet pipe, and an electrically controlled valve is installed inside the air inlet pipe. A plurality of blow pipes are fixedly connected to one side of the air storage tank, and a pulse valve is installed inside the cavity of each of the blow pipes. A plurality of nozzles are fixedly connected to the surface of each of the blow pipes.
[0009] Furthermore, the acoustic dust removal assembly includes a first mounting plate, one side of which is connected to a second mounting plate via bolts and nuts. An installation tube is fixedly embedded in the inner cavity of the second mounting plate, and a horn is fixedly embedded in the inner cavity of the first mounting plate. One end of the horn is fixedly connected to a waveguide, the other end of the waveguide is connected to a sound-generating unit, and the other end of the sound-generating unit is connected to an acceleration chamber. One side of the acceleration chamber is fixedly connected to an air inlet pipe, and an electric valve is embedded in the air inlet pipe.
[0010] Furthermore, the bottom of the air storage tank is fixedly connected to the top of the dust removal chamber, one end of the plurality of blow pipes is fixedly embedded in the inner cavity of the plurality of fixed holes, the other end of the plurality of blow pipes is fixedly connected to one side of the inner cavity of the dust removal chamber, the plurality of nozzles are located on the top of the plurality of filter bags, and one end of the first air inlet pipe is fixedly connected to one end of one of the compressed air branch pipes.
[0011] Furthermore, the bottoms of the multiple sound generating units and multiple acceleration chambers are fixedly connected to the surfaces of multiple fixed plates, the surfaces of the multiple mounting tubes are fixedly embedded in the inner cavities of multiple mounting holes, the multiple air intake pipes are grouped in pairs, and one end of the multiple groups of air intake pipes is fixedly connected to one side of multiple compressed air branch pipes.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] 1. In this utility model, when the unit is running, the external control monitors the clogging of the filter bag based on the data transmitted by pressure sensor one and sensor two, and opens electric valve three in sequence through the external controller to clean the dust. This design allows the sonic dust removal component to clean the dust while the unit is running, reducing the frequency of downtime for dust cleaning.
[0014] 2. In this utility model, when the unit is shut down, dust is cleaned by the pulse dust removal component. The gentle characteristics of sonic cleaning reduce physical damage to the filter bags, while the powerful cleaning of pulse jets reduces clogging of the filter bags. The combination of the two can extend the service life of the filter bags. Attached Figure Description
[0015] Figure 1 A schematic diagram of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0016] Figure 2 A front sectional view of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0017] Figure 3 A schematic diagram of the dust removal chamber of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0018] Figure 4 A side sectional view of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0019] Figure 5 A schematic diagram showing the connection between the pulse dust collector assembly and the acoustic dust collector assembly of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0020] Figure 6 A schematic diagram of the acoustic dust collector assembly of an ultra-clean semi-dry desulfurization and dust removal device provided by this utility model;
[0021] Figure 7 This utility model provides an ultra-clean semi-dry desulfurization and dust removal device. Figure 4 Schematic diagram at point A in the middle.
[0022] Legend:
[0023] 1. Smoke inlet; 101. Absorption tower; 102. Connecting pipe; 103. Support rod one; 104. Dust collection bin; 105. Support leg; 106. Discharge pipe; 107. Electrically controlled valve one; 108. Fixing plate; 109. Mounting hole; 110. Fixing hole; 111. Exhaust pipe; 112. Guide plate; 113. Mounting plate; 114. Filter bag; 115. Frame; 116. Pressure sensor one; 117. Sensor two; 118. Main compressed air pipe; 119. Branch compressed air pipe one 120. Compressed air branch pipe II; 121. Support rod II; 2. Pulse dust removal assembly; 201. Air storage tank; 202. Air inlet pipe I; 203. Electrically controlled valve II; 204. Blowpipe; 205. Pulse valve; 206. Nozzle; 3. Acoustic dust removal assembly; 301. Mounting disc I; 302. Mounting disc II; 303. Mounting pipe; 304. Horn; 305. Waveguide; 306. Sound generating unit; 307. Acceleration chamber; 308. Air inlet pipe II; 309. Electrically controlled valve III. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1-7 This utility model provides a technical solution: an ultra-clean semi-dry desulfurization and dust removal device, comprising: a flue gas inlet 1, an absorption tower 101 fixedly connected to the top of the flue gas inlet 1, a connecting pipe 102 fixedly connected to the top of one side of the absorption tower 101, a dust removal chamber 104 fixedly connected to the other end of the connecting pipe 102, a plurality of support rods 103 fixedly connected to one side of the absorption tower 101, the other ends of the plurality of support rods 103 fixedly connected to one side of the dust removal chamber 104, an exhaust pipe 111 fixedly connected to the top of the other side of the dust removal chamber 104, the inner cavities of the flue gas inlet 1, the absorption tower 101, the connecting pipe 102, the dust removal chamber 104 and the exhaust pipe 111 being interconnected, mounting holes 109 being provided through the four corners on both sides of the dust removal chamber 104, a pulse dust removal component 2 being provided on the top of the dust removal chamber 104, and an acoustic dust removal component 3 being provided inside the plurality of mounting holes 109.
[0026] Specifically: During unit operation, the external control monitors the clogging status of filter bags 114 based on data transmitted from pressure sensors 116 and 117. The external controller then sequentially opens electric valves 309 for cleaning. This design allows the acoustic dust removal component 3 to perform cleaning while the unit is running, reducing the frequency of downtime cleaning. When the unit is shut down, the pulse dust removal component 2 performs cleaning. The gentle acoustic cleaning reduces physical damage to the filter bags, while the powerful pulse jet cleaning reduces clogging. The combination of these two methods extends the filter bag's lifespan. The bottom of the absorption tower 101 features a venturi tube design to accelerate the flue gas. An array of spray nozzles inside the absorption tower 101 sprays lime solution, which mixes with sulfur dioxide in the flue gas. The accelerated flue gas carries calcium hydroxide or desulfurization ash, causing intense turbulence and collisions within the absorption tower 101. This continuous renewal of the calcium hydroxide surface allows it to be recycled for absorbing sulfur dioxide. The absorption tower 101 is existing technology, and its specific structure will not be detailed here.
[0027] In one embodiment, support legs 105 are fixedly connected to the four corners of the bottom of the dust collection bin 104, and a discharge pipe 106 is fixedly embedded in the bottom of the dust collection bin 104. The inner cavity of the dust collection bin 104 and the discharge pipe 106 are connected. An electrically controlled valve 107 is installed in the inner cavity of the discharge pipe 106. Four fixing plates 108 are fixedly connected to both sides of the dust collection bin 104, and multiple fixing holes 110 are opened through the top of one side of the dust collection bin 104.
[0028] Specifically, as shown in the figure: the electric control valve 107 can be opened by an external controller, and the dust at the bottom of the dust collection chamber 104 can fall from the discharge pipe 106.
[0029] In one embodiment, a guide plate 112 is fixedly connected to three sides of one end of the dust collection chamber 104. An installation plate 113 is fixedly embedded in the inner cavity of the dust collection chamber 104 and one side of the guide plate 112. Multiple filter bags 114 are embedded inside the installation plate 113, and a frame 115 is embedded in the inner cavity of each filter bag 114. A pressure sensor 116 and a sensor 117 are fixedly connected to the bottom and top of one end of the installation plate 113, respectively. A compressed air main pipe 118 is connected to one side of the dust collection chamber 104. Three compressed air branch pipes 119 are fixedly connected to the top of the device. The other ends of two of the compressed air branch pipes 119 are connected to two compressed air branch pipes 120. The inner cavities of the main compressed air pipe 118, the three compressed air branch pipes 119, and the four compressed air branch pipes 120 are interconnected. Multiple support rods 121 are fixedly connected to the surfaces of the main compressed air pipe 118, the three compressed air branch pipes 119, and the four compressed air branch pipes 120. The other ends of the multiple support rods 121 are fixedly connected to the surface of the dust removal chamber 104.
[0030] Specifically, as shown in the figure: support rod 2 121 fixes the compressed air main pipe 118, compressed air branch pipe 119 and compressed air branch pipe 2 120 to the surface of the dust removal chamber 104 to prevent the compressed air main pipe 118, compressed air branch pipe 119 and compressed air branch pipe 2 120 from shaking during unit operation, which would affect the normal use of this device.
[0031] In one embodiment, the pulse dust removal assembly 2 includes an air storage tank 201. One end of the air storage tank 201 is fixedly connected to an air inlet pipe 202. An electrically controlled valve 203 is embedded in the inner cavity of the air inlet pipe 202. A plurality of blow pipes 204 are fixedly connected to one side of the air storage tank 201. A pulse valve 205 is embedded in the inner cavity of each of the plurality of blow pipes 204. A plurality of nozzles 206 are fixedly connected to the surface of each of the plurality of blow pipes 204.
[0032] Specifically, as shown in the figure: the external controller opens the second electrical control valve 203, and compressed air enters the air storage tank 201 for storage. The external controller then supplies power to the pulse valve 205 in sequence, and the compressed air stored in the air storage tank 201 is released. The compressed air passes through the pulse valve 205, the blow pipe 204 and the nozzle 206, and the high-pressure air blows onto the filter bag 114. The inside of the filter bag 114 expands instantaneously to form a shock wave. The shock wave causes the surface of the filter bag 114 to vibrate, the dust layer is peeled off and falls into the ash hopper, and the dust removal is completed.
[0033] In one embodiment, the acoustic dust removal assembly 3 includes a mounting circular plate 301, a mounting circular plate 302 connected to one side of the mounting circular plate 301 by bolts and nuts, a mounting tube 303 fixedly embedded in the inner cavity of the mounting circular plate 302, a horn 304 fixedly embedded in the inner cavity of the mounting circular plate 301, a waveguide 305 fixedly connected to one end of the horn 304, a sound-generating unit 306 connected to the other end of the waveguide 305, an acceleration chamber 307 connected to the other end of the sound-generating unit 306, an air inlet pipe 308 fixedly connected to one side of the acceleration chamber 307, and an electric valve 309 embedded in the air inlet pipe 308.
[0034] Specifically, as shown in the figure: the electric valve 309 is opened sequentially by the external controller, and the compressed air enters the corresponding acceleration chamber 307. The compressed air is accelerated to a predetermined speed in 307 and then enters the sound generating unit 306. The sound generating unit 306 converts the potential energy of the compressed air into the kinetic energy of the sound wave, which is transmitted to the dust removal area through the waveguide 305 and the horn 304 for dust removal.
[0035] In one embodiment, the bottom of the air storage tank 201 is fixedly connected to the top of the dust collection chamber 104, one end of a plurality of blow pipes 204 is fixedly embedded in the inner cavity of a plurality of fixing holes 110, the other end of the plurality of blow pipes 204 is fixedly connected to one side of the inner cavity of the dust collection chamber 104, a plurality of nozzles 206 are located on the top of a plurality of filter bags 114, and one end of an air inlet pipe 202 is fixedly connected to one end of one of the compressed air branch pipes 119.
[0036] Specifically, as shown in the figure: the gas storage tank 201 is fixed to the surface of the dust removal chamber 104 to prevent shaking during operation and affect the normal operation of the device.
[0037] In one embodiment, the bottoms of multiple sound-generating units 306 and multiple acceleration chambers 307 are fixedly connected to the surfaces of multiple fixing plates 108, the surfaces of multiple mounting tubes 303 are fixedly embedded in the inner cavities of multiple mounting holes 109, multiple air intake pipes 308 are grouped in pairs, and one end of multiple groups of air intake pipes 308 is fixedly connected to one side of multiple compressed air branch pipes 120.
[0038] Specifically, as shown in the figure: the sound-generating unit 306 and the acceleration chamber 307 are fixed on the surface of the fixing plate 108 to prevent the device from shaking during operation and affecting its normal use.
[0039] Working principle: Connect the flue gas inlet 1 to the exhaust pipe equipped with the exhaust fan, connect the exhaust pipe 111 to the exhaust fan, and connect the compressed air main pipe 118 to an independent air compressor to provide compressed air for the pulse dust removal component 2 and the sonic dust removal component 3. Connect this ultra-clean semi-dry desulfurization and dust removal device to an external power supply. The external power supply is electrically connected to and provides power to the electrical control valve 107, pressure sensor 116, sensor 217, electrical control valve 203, pulse valve 205, and electric valve 309. The external controller is electrically connected to and correlated with the electrical control valve 107, electrical control valve 203, pulse valve 205, and electric valve 309. Pressure sensor 116 and sensor 217 monitor the pressure at the inlet of the filter bag 114 in real time and transmit the data to the external controller.
[0040] Under the action of the exhaust fan, the flue gas that needs to be desulfurized enters the flue gas inlet 1 through the exhaust pipe, and then enters the absorption tower. In the absorption tower, desulfurization treatment is carried out and the flue gas is purified. The purified flue gas enters the dust removal chamber 104 through the connecting pipe 102 for dust removal. Large dust particles fall to the bottom of the dust removal chamber 104 under their own gravity, while fine dust particles are blocked on the outer surface of the filter bag 114. The gas filtered by the filter bag 114 enters the upper part of the dust removal chamber 104 through the filter bag 114. Under the action of the exhaust fan, the gas is discharged through the exhaust pipe 111, completing the ultra-clean semi-dry desulfurization and dust removal.
[0041] When the unit is running, the external control monitors the blockage of the filter bag 114 based on the data transmitted by pressure sensor 116 and sensor 117. The external controller then opens the electric valve 309 in sequence, and compressed air enters the corresponding acceleration chamber 307. The compressed air is accelerated to a predetermined speed in chamber 307 and then enters the sound generating unit 306. The sound generating unit 306 converts the potential energy of the compressed air into the kinetic energy of the sound waves, which are transmitted to the dust removal area through the waveguide 305 and the horn 304 for dust removal. This design allows the acoustic dust removal component 3 to perform dust removal while the unit is running, reducing the frequency of downtime for dust removal.
[0042] When the unit is shut down, the external controller opens the second electrical control valve 203, and compressed air enters the air storage tank 201 for storage. The external controller then supplies power to the pulse valve 205 in sequence, and the compressed air stored in the air storage tank 201 is released. The compressed air passes through the pulse valve 205, the blow pipe 204 and the nozzle 206, and the high-pressure air blows the filter bag 114. The inside of the filter bag 114 expands instantaneously to form a shock wave. The shock wave causes the surface of the filter bag 114 to vibrate, the dust layer is peeled off and falls into the ash hopper, and the dust removal is completed.
[0043] The gentle nature of sonic cleaning reduces physical damage to the filter bags, while the powerful cleaning of pulse jet cleaning reduces clogging. The combination of the two can extend the service life of the filter bags.
[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An ultra-clean semi-dry desulfurization and dust removal device, characterized in that, include: A smoke inlet (1) is provided, with an absorption tower (101) fixedly connected to its top. A connecting pipe (102) is fixedly connected to the top of one side of the absorption tower (101), and a dust collection chamber (104) is fixedly connected to the other end of the connecting pipe (102). Multiple support rods (103) are fixedly connected to one side of the absorption tower (101), and the other ends of the multiple support rods (103) are fixedly connected to one side of the dust collection chamber (104). 104) An exhaust pipe (111) is fixedly connected to the top of the other side. The inner cavity of the smoke inlet (1), absorption tower (101), connecting pipe (102), dust removal chamber (104) and exhaust pipe (111) are connected. The four corners on both sides of the dust removal chamber (104) are provided with mounting holes (109). The top of the dust removal chamber (104) is provided with a pulse dust removal component (2). The interior of the multiple mounting holes (109) is provided with an acoustic dust removal component (3).
2. The ultra-clean semi-dry desulfurization and dust removal device according to claim 1, characterized in that: The dust removal chamber (104) has four fixed support legs (105) at the bottom corners. The bottom of the dust removal chamber (104) is fixedly embedded with a discharge pipe (106). The dust removal chamber (104) and the discharge pipe (106) are connected. An electrically controlled valve (107) is installed in the inner cavity of the discharge pipe (106). Four fixing plates (108) are fixedly connected to both sides of the dust removal chamber (104). Multiple fixing holes (110) are opened through the top of one side of the dust removal chamber (104).
3. The ultra-clean semi-dry desulfurization and dust removal device according to claim 1, characterized in that: A guide plate (112) is fixedly connected to three sides of one end of the dust collection chamber (104). An installation plate (113) is fixedly embedded in one side of the dust collection chamber (104) and the guide plate (112). Multiple filter bags (114) are embedded inside the installation plate (113). A skeleton (115) is embedded in the inner cavity of each of the multiple filter bags (114). A pressure sensor (116) and a sensor (117) are fixedly connected to the bottom and top of one end of the installation plate (113), respectively. A compressed air main pipe (118) is connected to one side of the dust collection chamber (104). The top of 8) is fixedly connected to three compressed air branch pipes (119), and the other ends of two of the compressed air branch pipes (119) are connected to two compressed air branch pipes (120). The inner cavities of the compressed air main pipe (118), the three compressed air branch pipes (119) and the four compressed air branch pipes (120) are interconnected. Multiple support rods (121) are fixedly connected to the surfaces of the compressed air main pipe (118), the three compressed air branch pipes (119) and the four compressed air branch pipes (120). The other ends of the multiple support rods (121) are fixedly connected to the surface of the dust removal chamber (104).
4. The ultra-clean semi-dry desulfurization and dust removal device according to claim 1, characterized in that: The pulse dust removal assembly (2) includes an air storage tank (201), one end of which is fixedly connected to an air inlet pipe (202). An electrically controlled valve (203) is installed in the inner cavity of the air inlet pipe (202). A plurality of blow pipes (204) are fixedly connected to one side of the air storage tank (201). A pulse valve (205) is installed in the inner cavity of each of the blow pipes (204). A plurality of nozzles (206) are fixedly connected to the surface of each of the blow pipes (204).
5. The ultra-clean semi-dry desulfurization and dust removal device according to claim 1, characterized in that: The acoustic dust removal assembly (3) includes a mounting circular plate one (301), one side of which is connected to a mounting circular plate two (302) by bolts and nuts. The inner cavity of the mounting circular plate two (302) is fixedly embedded with a mounting tube (303). The inner cavity of the mounting circular plate one (301) is fixedly embedded with a horn (304). One end of the horn (304) is fixedly connected to a waveguide tube (305). The other end of the waveguide tube (305) is connected to a sound-generating unit (306). The other end of the sound-generating unit (306) is connected to an acceleration chamber (307). One side of the acceleration chamber (307) is fixedly connected to an air inlet pipe two (308). An electric valve three (309) is embedded in the air inlet pipe two (308).
6. The ultra-clean semi-dry desulfurization and dust removal device according to claim 4, characterized in that: The bottom of the air storage tank (201) is fixedly connected to the top of the dust removal chamber (104). One end of the multiple blow pipes (204) is fixedly embedded in the inner cavity of multiple fixing holes (110). The other end of the multiple blow pipes (204) is fixedly connected to one side of the inner cavity of the dust removal chamber (104). Multiple nozzles (206) are located on the top of multiple filter bags (114). One end of the air inlet pipe (202) is fixedly connected to one end of one of the compressed air branch pipes (119).
7. The ultra-clean semi-dry desulfurization and dust removal device according to claim 5, characterized in that: The bottoms of multiple sound generating units (306) and multiple acceleration chambers (307) are fixedly connected to the surface of multiple fixing plates (108), the surface of multiple mounting tubes (303) is fixedly embedded in the inner cavity of multiple mounting holes (109), multiple air intake pipes (308) are in pairs, and one end of multiple sets of air intake pipes (308) is fixedly connected to one side of multiple compressed air branch pipes (120).