Acoustic wave sound generator and dust cleaning device

Abstract

The utility model provides a kind of acoustic wave sound generator and dust cleaning device.A kind of acoustic wave sound generator, comprising: shell and slide valve, cavity is provided in shell, input port for connecting compressed gas source and output port for outputting acoustic wave are provided on shell, input port and output port are communicated with cavity, slide valve is slidably installed in cavity, and output port is located on the sliding track of slide valve.Utilize compressed air or nitrogen to generate pressure difference under the action of slide valve to slide valve and then force slide valve reciprocating sliding, under the special mechanical cooperation of slide valve and structure main body, strong mechanical vibration is generated to form initial acoustic wave.Initial acoustic wave is resonated, gradually amplified by acoustic wave guide pipe and generates acoustic wave with superstrong sound pressure level, which is convenient for mechanical wave to amplify and spread through acoustic wave guide pipe.Acoustic wave acts on the surface to be cleaned, and the resonance effect of acoustic wave and dust is used to make dust loose and then carried away with flue gas, so as to achieve the purpose of dust cleaning.Simplify structure and improve dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a sound wave generator and a dust removal device. Background Technology

[0002] With the rapid development of technology, stoves are widely used in many fields. As the usage time increases, ash usually remains inside the stove, affecting its normal operation.

[0003] In the existing technology, ash removal devices are usually used to clean the stove. The existing ash removal devices are mechanical vibration type, which have a complex structure and low ash removal efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sound wave generator and a dust removal device to address the shortcomings of the existing technology.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A sound wave generator includes: a housing and a slide valve. A cavity is provided in the housing. An input port for connecting a compressed air source and an output port for outputting sound waves are provided on the housing. Both the input port and the output port are connected to the cavity. The slide valve is slidably installed in the cavity. The output port is located on the sliding trajectory of the slide valve.

[0006] The beneficial effects of this utility model's technical solution are as follows: Compressed air or nitrogen is used to create a pressure difference under the action of a sliding valve, forcing the valve to slide back and forth. The special mechanical cooperation between the sliding valve and the main structure generates strong mechanical vibrations, forming initial sound waves. These initial sound waves are then modulated and gradually amplified by the sound waveguide to produce sound waves with extremely high sound pressure levels, facilitating the propagation of the mechanical waves through the sound waveguide. The sound waves act on the surface being cleaned, and the resonance effect between the sound waves and the dust causes the dust to loosen and be carried away by the flue gas, thus achieving the purpose of dust removal. This simplifies the structure and improves dust removal efficiency.

[0007] Furthermore, the slide valve is provided with a piston end and a sealing section, the middle part of the slide valve is provided with a through hole, the sealing section is provided with a curved groove, and the slide valve is slidably installed in the cavity by a return spring.

[0008] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the through-hole in the axial direction plays a role in timely pressure relief, allowing the slide valve to slide normally. The curved groove is used to generate mechanical waves. When the powerful airflow passes through the curved groove of the slide valve, it generates strong mechanical vibration, forming the initial sound wave. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the generator, due to the conical design, the airflow velocity increases rapidly during the process. At the same time, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibration and producing the initial sound wave. The initial sound wave is modulated and gradually amplified by the sound waveguide to generate a sound wave with a super-strong sound pressure level, which facilitates the amplification and propagation of the mechanical wave through the sound waveguide. The return spring is used to reset the slide valve. As the compressed gas is released, the pressure in the generator cavity decreases. Under the action of the return spring, the conical sealing surface of the sealing section and the main body of the generator fits tightly, causing the pressure in the generator cavity to increase rapidly again, and this process is repeated cyclically.

[0009] Furthermore, the diameter of the piston end is larger than the diameter of the sealing section.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is that it facilitates the generation of pressure difference, causing the slide valve to slide back and forth. Compressed gas, as the power source for generating sound waves, enters the generator cavity from the inlet. The pressure inside the cavity increases rapidly, and the piston end has a larger area than the sealing section, causing the slide valve to move towards the piston end.

[0011] Furthermore, the sealing section is a conical sealing structure, the curved groove is an annular groove, and the piston end, the sealing section, and the curved groove are integrally formed structures.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The curved groove is used to generate mechanical waves. A powerful airflow generates strong mechanical vibrations when passing through the curved groove of the slide valve, forming the initial sound wave. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the transmitter, the airflow velocity increases rapidly due to the conical design. Simultaneously, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibrations and producing the initial sound wave. The initial sound wave, after being resonantly modulated and gradually amplified by the sound waveguide, generates a sound wave with an ultra-high sound pressure level, facilitating the amplification and propagation of the mechanical wave through the sound waveguide. The piston end of the slide valve and the sealing section are an integral structure, facilitating a linkage reaction and improving load strength. The sealing section and the main body of the transmitter adopt a conical sealing form, making them easy to separate and providing good sealing performance.

[0013] Furthermore, the housing includes: a rear cover for the transmitter and a main body for the transmitter. The rear cover for the transmitter is connected to the main body for the transmitter. The cavity is located between the rear cover for the transmitter and the main body for the transmitter. A cylindrical piston cavity is provided on the rear cover for the transmitter. The piston end is slidably installed in the piston cavity for the piston end and the piston cavity for clearance fit. The two ends of the return spring are respectively connected to the piston cavity and the piston end. The input port and the output port are both located on the main body for the transmitter.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: the design of the generator rear cover and generator body facilitates the installation and maintenance of the housing, and also facilitates production and processing. The generator rear cover is designed as a cylindrical cylinder structure with a clearance fit to the slide valve piston end. This facilitates stable sliding of the piston end within the piston chamber of the generator rear cover.

[0015] Furthermore, the output port on the main body of the sound generator is provided with a conical sealing cavity adapted to the sealing section. The conical sealing cavity is connected to the output port and is located on the sliding trajectory of the sealing section.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: the sealing section and the main body of the transmitter adopt a conical sealing form, which makes them easy to separate and provides good sealing performance. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the transmitter, the airflow velocity increases rapidly during the process due to the conical design. At the same time, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibration and producing the initial sound wave. The initial sound wave is modulated and gradually amplified by the sound waveguide to produce a sound wave with an ultra-high sound pressure level, which facilitates the amplification and propagation of the mechanical wave through the sound waveguide.

[0017] In addition, this utility model also provides a dust removal device, including a sound wave generator as described in any of the above claims, and further including: a sound wave duct, a delivery system and a compressed air source, wherein the sound wave duct is connected to an output port and the compressed air source is connected to an input port through the delivery system.

[0018] The beneficial effects of this utility model's technical solution are as follows: Compressed air or nitrogen is used to create a pressure difference on the slide valve, forcing it to slide back and forth. The special mechanical cooperation between the slide valve and the main structure generates strong mechanical vibrations, forming initial sound waves. These initial sound waves are then resonantly modulated and gradually amplified by the sound waveguide, producing sound waves with extremely high sound pressure levels, facilitating the propagation of the mechanical waves through the sound waveguide. The sound waves act on the surface being cleaned, and the resonance effect between the sound waves and the dust causes the dust to loosen and be carried away by the flue gas, thus achieving the purpose of cleaning.

[0019] Furthermore, the acoustic waveguide is a conical cylinder, and the acoustic waveguide is divided into a small section and a large section. The small section is connected to the output port, and the large section is connected to the small section. The compressed gas source is compressed air or nitrogen.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are: the compressed gas source is compressed air or nitrogen, which facilitates the conversion of the kinetic energy of the compressed gas into sound waves. The initial sound wave is modulated and gradually amplified by the sound waveguide to generate a sound wave with a super strong sound pressure level, which facilitates the amplification and propagation of mechanical waves through the sound waveguide.

[0021] Furthermore, an installation sleeve is fitted on the outer side of the acoustic waveguide, and a flange for connecting to the furnace wall is provided at the end of the installation sleeve. Insulation material is provided between the installation sleeve and the acoustic waveguide.

[0022] The beneficial effects of adopting the above-mentioned further technical solutions are: the installation sleeve and flange settings facilitate the welding and fixing of the flange-type installation sleeve to the furnace wall. The insulation material serves two purposes: reducing heat transfer and reducing noise.

[0023] Furthermore, the conveying system includes a main pipeline and a bypass pipeline. The two ends of the main pipeline are connected to the compressed air source and the inlet, respectively. A first valve, a second valve, and a Y-shaped filter are installed on the main pipeline. The Y-shaped filter is located between the first valve and the second valve. The bypass pipeline is connected in parallel with the second valve, and a third valve is installed on the bypass pipeline.

[0024] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Compressed air or nitrogen is provided as the power source through the main pipeline. During operation, a certain amount of compressed gas is opened in the bypass pipeline to create a positive pressure state for the ash removal device, which plays a self-cleaning role and prevents dust from the furnace flue gas from flowing back into the ash removal device. A Y-shaped filter is used to filter the compressed gas to prevent dust from contaminating the ash removal device.

[0025] The advantages of this invention in its additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of the sound wave generator provided in the embodiment of this utility model.

[0028] Figure 2 This is a schematic diagram of the slide valve provided in an embodiment of the present utility model.

[0029] Figure 3 This is one of the structural schematic diagrams of the dust removal device provided in the embodiment of this utility model.

[0030] Figure 4 The second schematic diagram of the dust removal device provided in the embodiment of this utility model.

[0031] The following are the reference numerals: 1. Slide valve; 2. Inlet; 3. Piston end; 4. Sealing section; 5. Through hole in the shaft; 6. Curved groove; 7. Return spring; 8. Rear cover of the generator; 9. Generator body; 10. Compressed air source; 11. Small section of the acoustic waveguide; 12. Large section of the acoustic waveguide; 13. Mounting sleeve; 14. Insulation material; 15. Main pipeline; 16. Bypass pipeline. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0037] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a sound wave generator, including: a housing and a slide valve 1. The housing has a cavity, and the housing has an input port 2 for connecting to a compressed air source and an output port for outputting sound waves. The input port 2 and the output port are both connected to the cavity. The slide valve 1 is slidably installed in the cavity, and the output port is located on the sliding trajectory of the slide valve 1.

[0039] The beneficial effects of this utility model's technical solution are as follows: Compressed air or nitrogen is used to create a pressure difference under the action of a sliding valve, forcing the valve to slide back and forth. The special mechanical cooperation between the sliding valve and the main structure generates strong mechanical vibrations, forming initial sound waves. These initial sound waves are then modulated and gradually amplified by the sound waveguide to produce sound waves with extremely high sound pressure levels, facilitating the propagation of the mechanical waves through the sound waveguide. The sound waves act on the surface being cleaned, and the resonance effect between the sound waves and the dust causes the dust to loosen and be carried away by the flue gas, thus achieving the purpose of dust removal. This simplifies the structure and improves dust removal efficiency.

[0040] The housing and the slide valve can both be made of metal.

[0041] The overall generator (sound wave generator) can adopt a fully enclosed design with no external exhaust or pressure relief port, reducing noise leakage.

[0042] like Figure 1 and Figure 2As shown, the slide valve 1 is further provided with a piston end 3 and a sealing section 4. The middle part of the slide valve 1 is provided with a through hole 5. The sealing section 4 is provided with a curved groove 6. The slide valve 1 is slidably installed in the cavity by a return spring 7.

[0043] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the through-hole in the axial direction plays a role in timely pressure relief, allowing the slide valve to slide normally. The curved groove is used to generate mechanical waves. When the powerful airflow passes through the curved groove of the slide valve, it generates strong mechanical vibration, forming the initial sound wave. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the generator, due to the conical design, the airflow velocity increases rapidly during the process. At the same time, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibration and producing the initial sound wave. The initial sound wave is modulated and gradually amplified by the sound waveguide to generate a sound wave with a super-strong sound pressure level, which facilitates the amplification and propagation of the mechanical wave through the sound waveguide. The return spring is used to reset the slide valve. As the compressed gas is released, the pressure in the generator cavity decreases. Under the action of the return spring, the conical sealing surface of the sealing section and the main body of the generator fits tightly, causing the pressure in the generator cavity to increase rapidly again, and this process is repeated cyclically.

[0044] The return spring 7 can be a compression spring. An annular groove can be provided between the piston end 3 and the sealing section 4.

[0045] The through hole 5 of the axial center of the slide valve 1 is used to release the pressure in the cavity formed by the piston end (piston end 3) of the slide valve and the rear cover 8 of the sounder when the piston end (piston end 3) of the slide valve moves and compresses the return spring 7, which causes the slide valve 1 to be unable to slide normally. The through hole 5 of the axial center plays the role of venting and releasing pressure.

[0046] like Figure 1 and Figure 2 As shown, the diameter of the piston end 3 is further greater than the diameter of the sealing section 4.

[0047] The beneficial effect of adopting the above-mentioned further technical solution is that it facilitates the generation of pressure difference, causing the slide valve to slide back and forth. Compressed gas, as the power source for generating sound waves, enters the generator cavity from the inlet. The pressure inside the cavity increases rapidly, and the piston end has a larger area than the sealing section, causing the slide valve to move towards the piston end.

[0048] Users can design the diameter of piston end 3 to be smaller than the diameter of sealing section 4 according to actual needs, and design the return spring as a tension spring.

[0049] like Figure 1 and Figure 2As shown, the sealing section 4 is a conical sealing structure, the curved groove 6 is an annular groove, and the piston end 3, the sealing section 4, and the curved groove 6 are integrally formed structures.

[0050] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The curved groove is used to generate mechanical waves. A powerful airflow generates strong mechanical vibrations when passing through the curved groove of the slide valve, forming the initial sound wave. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the transmitter, the airflow velocity increases rapidly due to the conical design. Simultaneously, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibrations and producing the initial sound wave. The initial sound wave, after being resonantly modulated and gradually amplified by the sound waveguide, generates a sound wave with an ultra-high sound pressure level, facilitating the amplification and propagation of the mechanical wave through the sound waveguide. The piston end of the slide valve and the sealing section are an integral structure, facilitating a linkage reaction and improving load strength. The sealing section and the main body of the transmitter adopt a conical sealing form, making them easy to separate and providing good sealing performance.

[0051] like Figure 1 and Figure 2 As shown, the housing further includes: a rear cover 8 for the transmitter and a main body 9 for the transmitter. The rear cover 8 for the transmitter is connected to the main body 9 for the transmitter. The cavity is located between the rear cover 8 for the transmitter and the main body 9 for the transmitter. A cylindrical piston cavity is provided on the rear cover 8 for the transmitter. The piston end 3 is slidably installed in the piston cavity for the piston end 3 to be in clearance fit with the piston cavity. The two ends of the return spring 7 are respectively connected to the piston cavity and the piston end 3. The input port 2 and the output port are both located on the main body 9 for the transmitter.

[0052] The beneficial effects of adopting the above-mentioned further technical solution are: the design of the generator rear cover and generator body facilitates the installation and maintenance of the housing, and also facilitates production and processing. The generator rear cover is designed as a cylindrical cylinder structure with a clearance fit to the slide valve piston end. This facilitates stable sliding of the piston end within the piston chamber of the generator rear cover.

[0053] The cylindrical piston cavity is connected to the cavity body.

[0054] like Figure 1 and Figure 2 As shown, further, a conical sealing cavity adapted to the sealing section 4 is provided at the output port on the main body 9 of the sound generator. The conical sealing cavity is connected to the output port and is located on the sliding trajectory of the sealing section 4.

[0055] The beneficial effects of adopting the above-mentioned further technical solution are: the sealing section and the main body of the transmitter adopt a conical sealing form, which makes them easy to separate and provides good sealing performance. When the high-pressure airflow passes through the conical gap between the sealing section and the main body of the transmitter, the airflow velocity increases rapidly during the process due to the conical design. At the same time, the high-speed airflow acts on the sharp annular edge of the curved groove at the sealing end, generating strong mechanical vibration and producing the initial sound wave. The initial sound wave is modulated and gradually amplified by the sound waveguide to produce a sound wave with an ultra-high sound pressure level, which facilitates the amplification and propagation of the mechanical wave through the sound waveguide.

[0056] like Figure 3 and Figure 4 As shown, in addition, this utility model also provides a dust removal device, including a sound wave generator as described in any of the above claims, and further including: a sound wave duct, a delivery system and a compressed air source 10, wherein the sound wave duct is connected to an output port and the compressed air source 10 is connected to an input port through the delivery system.

[0057] The beneficial effects of this utility model's technical solution are as follows: Compressed air or nitrogen is used to create a pressure difference on the slide valve, forcing it to slide back and forth. The special mechanical cooperation between the slide valve and the main structure generates strong mechanical vibrations, forming initial sound waves. These initial sound waves are then resonantly modulated and gradually amplified by the sound waveguide, producing sound waves with extremely high sound pressure levels, facilitating the propagation of the mechanical waves through the sound waveguide. The sound waves act on the surface being cleaned, and the resonance effect between the sound waves and the dust causes the dust to loosen and be carried away by the flue gas, thus achieving the purpose of cleaning.

[0058] It should be noted that the compressed air source 10 (which can be the main air pipeline for several soot blowers) only provides a stable compressed air source. The control of the sonic soot blower (cleaning device) is located in the branch air pipeline. The branch air pipeline is divided into a main line (main line 15) and a bypass line (bypass line 16). A solenoid valve (second valve) is installed on the main line (main line 15). The soot blower (cleaning device) mainly controls the on / off state of the compressed air by controlling the opening and closing of the solenoid valve (second valve). This allows the return spring 7 to overcome the air pressure and return the slide valve to its original position, thereby realizing the reciprocating motion of the slide valve.

[0059] The present invention provides a dust removal device, which can be a high-efficiency slide valve type acoustic dust removal device. In terms of the principle of sound generation, it is a novel type of acoustic dust removal device.

[0060] 1. Compressed air or nitrogen (nitrogen is used in special environments) is used as the power source for generating sound waves in a high-efficiency sliding valve type acoustic cleaning device, that is, the kinetic energy of compressed gas is converted into sound waves.

[0061] 2. Application of the slide valve, a key component of the sound-generating structure.

[0062] 3. The slide valve is an integral structure, divided into a piston end and a sealing end (sealing section 4). The diameter of the piston end is smaller than that of the sealing end. This is the key to generating a pressure difference and making the slide valve slide back and forth. A through hole (axial through hole 5) is set in the shaft to release pressure in time and allow the slide valve to slide normally.

[0063] 4. The rear cover of the sound generator is designed as a cylindrical cylinder structure with clearance fit to the piston end of the slide valve.

[0064] 5. The piston sealing end (sealing section 4) adopts a conical sealing structure that matches the conical structure of the sound-generating body (the conical cavity on the sound-generating body 9). The conical structure of the piston sealing end (sealing section 4) is designed with curved grooves, which is the key to generating mechanical waves.

[0065] 6. Mechanical waves are amplified and propagated through a sound waveguide, which is designed in two sections: a small section and a large section.

[0066] 7. The acoustic cleaning device is fixed by welding a flange-type mounting sleeve to the furnace wall.

[0067] 8. Compressed air or nitrogen (for use in special environments) is supplied as the power source through the main pipeline. The main pipeline consists of: a DN15 process pipeline, a metal hose, a solenoid valve (second valve), a manual ball valve (first valve), a Y-type filter, and fittings. In addition, a bypass design is included, consisting of: a DN15 process pipeline, a metal hose, a manual ball valve (third valve), and fittings. The purpose of adding the bypass is to allow a certain amount of compressed gas to flow through during operation, which can play a self-cleaning role for the ash removal device, while preventing the backflow of flue gas and dust from the furnace into the ash removal device.

[0068] like Figure 3 and Figure 4 As shown, the acoustic waveguide is further a conical cylinder, and the acoustic waveguide is divided into a small section 11 and a large section 12. The small section 11 is connected to the output port, and the large section 12 is connected to the small section 11. The compressed air source 10 is compressed air or nitrogen.

[0069] The beneficial effects of adopting the above-mentioned further technical solution are: the compressed gas source is compressed air or nitrogen, which facilitates the conversion of the kinetic energy of the compressed gas into sound waves. The initial sound wave is modulated and gradually amplified by the sound waveguide to generate a sound wave with a super strong sound pressure level, which facilitates the amplification and propagation of mechanical waves through the sound waveguide.

[0070] The acoustic waveguide can be a horn-shaped structure. The small segment 11 and the large segment 12 of the acoustic waveguide are divided according to the diameter of the acoustic waveguide. The segment with the smaller diameter is the small segment 11, and the segment with the larger diameter is the large segment 12. A flange can be installed at the end of the small segment 11, and the flange of the small segment 11 is connected to the main body 9 of the transmitter 9 by bolts. The small segment 11 and the large segment 12 of the acoustic waveguide can be integrally formed.

[0071] like Figure 3 and Figure 4 As shown, further, an installation sleeve 13 is fitted on the outer side of the acoustic waveguide, and a flange for connecting to the furnace wall is provided at the end of the installation sleeve 13. Insulation material 14 is provided between the installation sleeve 13 and the acoustic waveguide.

[0072] The beneficial effects of adopting the above-mentioned further technical solutions are: the installation sleeve and flange settings facilitate the welding and fixing of the flange-type installation sleeve to the furnace wall. The insulation material serves two purposes: reducing heat transfer and reducing noise.

[0073] The mounting sleeve 13 can be fitted onto the outer wall of the large section 12 of the acoustic waveguide. The mounting sleeve 13 can be a cylindrical cylinder. A cover plate, which can be an annular plate, can be installed at the end of the mounting sleeve 13 for sealing the insulation material 14.

[0074] like Figure 3 and Figure 4 As shown, the conveying system further includes: a main pipeline 15 and a bypass pipeline 16. The two ends of the main pipeline 15 are respectively connected to the compressed air source 10 and the inlet 2. A first valve, a second valve and a Y-shaped filter are installed on the main pipeline 15. The Y-shaped filter is located between the first valve and the second valve. The bypass pipeline 16 is connected in parallel with the second valve. A third valve is installed on the bypass pipeline 16.

[0075] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Compressed air or nitrogen is provided as the power source through the main pipeline. During operation, a certain amount of compressed gas is opened in the bypass pipeline to create a positive pressure state for the ash removal device, which plays a self-cleaning role and prevents dust from the furnace flue gas from flowing back into the ash removal device. A Y-shaped filter is used to filter the compressed gas to prevent dust from contaminating the ash removal device.

[0076] The second valve can be a solenoid valve, while the first and third valves can both be manual ball valves.

[0077] The purpose of adding a bypass process line (bypass line 16) is to open the manual ball valve (third valve) on the bypass process line (bypass line 16) to a small degree during the use of the dust removal device, so that the dust removal device can make a sound. This will create a positive pressure state for the dust removal device, which will clean the sound generator and prevent backflow of flue gas and dust, which could cause ash accumulation inside the dust removal device and cause abnormal operation.

[0078] This utility model provides a dust removal device, which can be a high-efficiency slide valve type acoustic dust removal device. It utilizes compressed air or nitrogen to generate a pressure difference under the action of a specially structured slide valve, thereby forcing the slide valve to slide back and forth. At the same time, the compressed air is regularly controlled. In addition, the slide valve and the main body of the structure generate strong mechanical vibration to form an initial sound wave under special mechanical cooperation. Subsequently, after resonance modulation and gradual amplification by the sound wave guide, a sound wave with an ultra-high sound pressure level is generated. The sound wave acts on the surface to be cleaned, and the resonance effect between the sound wave and the dust causes the dust to loosen and be carried away with the flue gas, thereby achieving the purpose of dust removal.

[0079] This utility model provides a high-efficiency slide valve type acoustic cleaning device (cleaning device). The main technical feature is that the cleaning device adopts the design concept of slide valve structure. By utilizing the special design structure of slide valve, acoustic principles are cleverly applied to generate sound waves, which accumulates valuable wealth for the diversity of acoustic cleaning devices (cleaning devices).

[0080] The purpose of this invention is to provide a dust removal device that is simple in structure, has low processing and operating costs, long service life, and can be used in different dust removal environments, thus promoting the development of acoustic dust removal devices.

[0081] Specific working principle: Compressed gas, acting as the power source for sound wave generation, enters the generator cavity through the compressed gas inlet (inlet 2). The pressure within the cavity rapidly increases. The area of ​​the slide valve piston end (piston end 3) is larger than that of the slide valve sealing section (sealing section 4), causing slide valve 1 to move towards the slide valve piston end (piston end 3). Simultaneously, the return spring 7 is compressed (the space between slide valve 1 and the generator rear cover 8 is compressed, and the gas in this space is discharged through the through hole 5 at the axis of slide valve 1). At this point, the slide valve piston end (piston end 3) and the slide valve sealing section (sealing section 4) are an integral structure, generating a linkage reaction, leading to... The conical seal between the slide valve sealing section (sealing section 4) and the generator body 9 is broken, and a large amount of compressed gas in the generator cavity is released from here. The powerful airflow generates strong mechanical vibration when passing through the curved groove (curved groove 6) at the sealing end of the slide valve 1, forming the initial sound wave. After being modulated and amplified by the sound waveguide, a sound wave with a strong sound pressure level is generated. As the compressed gas is released, the pressure in the generator cavity decreases. Under the action of the return spring 7, the slide valve sealing section (sealing section 4) and the conical sealing surface of the generator body 9 are tightly fitted, causing the pressure in the generator cavity to increase rapidly again. This process is repeated cyclically.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sound wave generator, characterized in that, include: The housing and the slide valve are provided. The housing has a cavity and an inlet for connecting to a compressed air source and an outlet for outputting sound waves. Both the inlet and the outlet are connected to the cavity. The slide valve is slidably installed in the cavity and the outlet is located on the sliding trajectory of the slide valve.

2. The sound wave generator according to claim 1, characterized in that, The slide valve is provided with a piston end and a sealing section. The middle part of the slide valve is provided with a through hole. The sealing section is provided with a curved groove. The slide valve is slidably installed in the cavity by a return spring.

3. The sound wave generator according to claim 2, characterized in that, The diameter of the piston end is larger than the diameter of the sealing section.

4. The sound wave generator according to claim 2, characterized in that, The sealing section is a conical sealing structure, the curved groove is an annular groove, and the piston end, the sealing section, and the curved groove are integrally formed.

5. A sound wave generator according to claim 2, characterized in that, The housing includes: a rear cover for a microphone and a main body for a microphone. The rear cover for a microphone is connected to the main body for a microphone. The space between the rear cover for a microphone and the main body for a microphone is a cavity. A cylindrical piston cavity is provided on the rear cover for a microphone. The piston end is slidably installed in the piston cavity. The piston end and the piston cavity are in clearance fit. The two ends of the return spring are respectively connected to the piston cavity and the piston end. The input port and the output port are both located on the main body for a microphone.

6. A sound wave generator according to claim 5, characterized in that, The output port of the sound generator body is provided with a conical sealing cavity adapted to the sealing section. The conical sealing cavity is connected to the output port and is located on the sliding trajectory of the sealing section.

7. A dust removal device, characterized in that, The acoustic wave generator according to any one of claims 1 to 6 further includes: an acoustic waveguide, a delivery system, and a compressed air source, wherein the acoustic waveguide is connected to an output port, and the compressed air source is connected to an input port through the delivery system.

8. A dust removal device according to claim 7, characterized in that, The acoustic waveguide is a conical cylinder, and it is divided into a small section and a large section. The small section is connected to the output port, and the large section is connected to the small section. The compressed gas source is compressed air or nitrogen.

9. A dust removal device according to claim 7, characterized in that, An installation sleeve is fitted on the outer side of the acoustic waveguide, and a flange for connecting to the furnace wall is provided at the end of the installation sleeve. Insulation material is provided between the installation sleeve and the acoustic waveguide.

10. A dust removal device according to claim 7, characterized in that, The delivery system includes a main pipeline and a bypass pipeline. The two ends of the main pipeline are connected to the compressed air source and the inlet, respectively. A first valve, a second valve, and a Y-shaped filter are installed on the main pipeline. The Y-shaped filter is located between the first valve and the second valve. The bypass pipeline is connected in parallel with the second valve. A third valve is installed on the bypass pipeline.

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