Coupling centrifugal separation airflow sound source smoke abatement device and method

Abstract

The invention discloses an airflow sound source smoke abatement device and method coupled with centrifugal separation. The first airflow sound source and the second airflow sound source are both installed on the box body and used for sucking and discharging airflow respectively, the dust collection drawer is connected to the bottom end of the box body and used for collecting separated solid particles, and the guide mechanism and the inner barrel are both fixedly connected to the lower portion of the box body and used for guiding the dust collection drawer to be separated. The air inlet pressure adjusting assembly is fixedly connected to the upper portion of the box body and fixedly connected with the first airflow sound source, the rotational flow blades and the barrel diameter adjusting mechanism are both installed on the inlet hole plate, the supporting tiles are installed on the inlet hole plate in the mode that the supporting tiles can move in the radial direction of the inlet hole plate, and a straight plate is arranged between every two adjacent supporting tiles. Two ends of the sliding blade are respectively connected with the resonant cavity sleeve and the supporting tile. According to the invention, the airflow discharged by the airflow sound source is fully utilized to realize self-introduction and self-discharge of smoke, so that efficient smoke purification and particle discharge control are realized, and the visibility of a fire scene when a fire occurs is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire protection and safety, and particularly relates to an airflow sound source smoke elimination device and method coupled with centrifugal separation. Background Art

[0002] With the vigorous development of my country's economy and the significant acceleration of urbanization, the rapid development of urban construction, the improvement of infrastructure and the rapid expansion of transportation and power networks, fires have become more widespread. In the process of a fire, the harm caused by fire smoke to trapped and rescue personnel is the most serious. Due to the strong light-blocking, toxic and terrifying nature of fire smoke, it will cause both physical and psychological harm to trapped people. Among the fire deaths, more than 80% are directly or indirectly caused by fire smoke.

[0003] The acoustic wave agglomeration technology uses the acoustic wave radiation force to cause the tiny particles in the smoke to agglomerate into larger particles, accelerate their sedimentation, and thus quickly reduce the smoke concentration, providing an effective new way for fire emergency response. As the core component, the sound source has a low energy conversion efficiency of the electroacoustic transducer and high requirements for the use environment. The airflow sound source has a simple structure, is resistant to high temperature smoke and dust, and has high energy conversion efficiency. For example, a sound source device for acoustic wave agglomeration disclosed in the Chinese invention patent with publication number CN111228940A can generate sound waves with high sound pressure levels, but the airflow discharged from the sound source will force the particles to move in a direction away from the sound field, which interferes with the efficiency of acoustic wave agglomeration to a certain extent. Therefore, how to develop a smoke elimination device with a higher effect of removing fire smoke or dust is an urgent problem to be solved. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the purpose of the present invention is to provide an airflow sound source smoke elimination device and method coupled with centrifugal separation.

[0005] The technical solution adopted by the present invention is:

[0006] 1. An airflow sound source smoke elimination device coupled with centrifugal separation:

[0007] It includes a box body, a first airflow sound source, a second airflow sound source, a dust collecting drawer, an air intake pressure regulating component, a guide mechanism and an inner cylinder. The first airflow sound source and the second airflow sound source are both installed on the top of the box body. The first airflow sound source and the second airflow sound source are respectively used for inhaling and exhausting airflow. The dust collecting drawer is connected to the bottom end of the box body for collecting separated solid particles. The guide mechanism and the inner cylinder are both fixedly connected to the lower part of the box body. The air intake pressure regulating component is fixedly connected to the upper part of the box body, and the air intake pressure regulating component is fixedly connected to the first airflow sound source.

[0008] A vertical cross partition is arranged inside the box body, which divides the cavity in the box body into a first dust removal area and a second dust removal area. The airflow in the first dust removal area flows to the second dust removal area through a connecting pipe. The bottoms of the first dust removal area and the second dust removal area are connected by a connecting pipe. A smoke inlet and a smoke outlet are opened on the top of the side wall of the box body. The smoke inlet and the smoke outlet are respectively located in the first dust removal area and the second dust removal area. The first airflow sound source and the second airflow sound source are respectively installed at the top of the first dust removal area and the second dust removal area.

[0009] The intake pressure regulating assembly comprises an inlet orifice plate, a swirl blade and a barrel diameter regulating mechanism, wherein the swirl blade and the barrel diameter regulating mechanism are both mounted on the inlet orifice plate;

[0010] The cylinder diameter adjustment mechanism includes a straight plate, a support shoe, a sliding vane, a resonance cavity sleeve and a synchronous slider. The inner ring of the inlet orifice plate is provided with a plurality of sliding grooves. The support shoe can be installed on the inlet orifice plate radially movably along the inlet orifice plate. A straight plate is arranged between each two adjacent support shoes. The outer end surface of the straight plate is connected to the inner wall of the box body through a spring. The support shoe can be movably installed on the straight plate track of the straight plate through the support shoe groove. The inner wall of the resonance cavity sleeve is connected to the resonance cavity of the first airflow sound source. One end of the sliding vane is connected to the outer wall of the resonance cavity sleeve movably up and down through the synchronous slider, and the other end is fixedly connected to the inner wall of the support shoe.

[0011] The inlet orifice plate is horizontally installed at the top of the first dust removal area in the box body, and a plurality of swirl blades are installed on the upper surface of the inlet orifice plate at even intervals along the circumference of the inlet orifice plate. Each swirl blade is arranged along the radial direction of the inlet orifice plate, and the outer periphery of the swirl blade is fixedly connected to the side wall of the box body, and the cylinder diameter adjustment mechanism is connected to the inlet orifice plate.

[0012] The straight plate and the support tile form a hollow cylindrical cylinder, and the sliding blade and the resonance cavity sleeve are both located inside the cylinder. When the airflow enters the first dust removal area from the smoke inlet, the airflow pushes the end of the sliding blade close to the resonance cavity sleeve to move downward, thereby increasing the interval between the resonance cavity sleeve and the support tile, thereby changing the inner diameter ratio between the cylinder and the resonance cavity in the first airflow sound source.

[0013] The guide mechanism is mainly composed of a conical filter and a guide plate. The outer periphery of the annular guide plate is fixedly connected to the inner wall of the box body. The annular guide plate is mainly composed of louver blades arranged at intervals. The conical filter is mainly composed of a hollow conical cylinder located at the upper part and a hollow cylindrical cylinder located at the lower part. A plurality of cylinder through holes for conducting airflow are opened on the hollow conical cylinder. The outer wall of the hollow cylindrical cylinder is fixedly connected to the middle of the guide plate, and the bottom of the conical filter is connected to the inlet of the connecting pipe.

[0014] The inner cylinder is located in the second dust removal area in the box body, and a plurality of spiral blades are installed on the outer wall of the inner cylinder. The airflow in the first dust removal area enters the connecting pipe after being separated by the conical filter screen, and the airflow flows from the outlet of the connecting pipe to the second dust removal area. The airflow in the second dust removal area then flows out of the second dust removal area from bottom to top through the inner cylinder.

[0015] 2. A method for eliminating smoke by airflow sound source coupled with centrifugal separation, characterized in that it comprises the following steps:

[0016] First, an air compressor is used to supply air to the first air flow sound source and the second air flow sound source. After the first air flow sound source is started, the air flow is driven to enter the first dust removal area from the flue gas inlet. The air flow in the first dust removal area applies thrust to the sliding blade, causing the end of the sliding blade close to the resonance cavity sleeve to move up and down. The support tile connected to the sliding blade is radially expanded outward along the inlet orifice plate, thereby increasing the interval between the resonance cavity sleeve and the support tile, thereby changing the inner diameter ratio between the cylinder and the resonance cavity in the first air flow sound source. Then, the adsorbed air flow in the first dust removal area is separated by a conical filter and enters the connecting pipe. The air flow flows from the outlet of the connecting pipe to the second dust removal area. The air flow in the second dust removal area then flows out of the second dust removal area from bottom to top through the inner cylinder and flows into the external atmosphere from the flue gas outlet.

[0017] The centrifugal separation principle of the present invention is as follows:

[0018] The flue gas enters from the flue gas inlet pipe and rotates when it flows downward through the swirl blades on the inlet orifice plate. Under the action of centrifugal force, the flue gas particles flow downward along the inner wall of the box to the guide mechanism for separation. The guide mechanism can guide the airflow to enter the second dust removal area smoothly and avoid secondary dust. The guide mechanism guides the flue gas to enter the second dust removal area tangentially from the horizontally arranged connecting pipe. Under the action of centrifugal force, the flue gas rotates and flows upward along the wall. The spiral plate fixed on the outer wall of the inner tube further restricts the flow of the flue gas while strengthening the intensity of the flue gas rotation flow. The overflow ring at the bottom of the horn of the second airflow sound source can prevent the flue gas particles from being discharged directly along the wall flow.

[0019] The present invention uses an airflow sound source as an acoustic wave agglomeration generating device and couples it with centrifugal separation to remove particulate matter in smoke, fully utilizing the airflow discharged from the sound source to realize self-inhalation of smoke particles, while utilizing the exhaust gas to create a rotating atmosphere in the smoke elimination device, thereby increasing the probability of particle collision and prolonging the residence time of smoke in the sound field, effectively reducing the number of smoke particles, and thus improving the visibility of the fire scene when a fire occurs. The present invention fully utilizes the airflow discharged from the airflow sound source to realize self-introduction and self-discharge of smoke, thereby realizing efficient purification of smoke and control of particle emission.

[0020] The beneficial effects of the present invention are:

[0021] 1. In the airflow sound source smoke elimination device coupled with centrifugal separation of the present invention, the chamfer ratio of the inner and outer sides of the resonance cavity of the airflow sound source and the distance between the resonance cavity and the cylinder will form a backflow in the side opening within a certain ratio, and the external smoke can be continuously sucked into the agglomeration chamber without the need for a fan. At the same time, the side opening of the low-frequency airflow sound source is adjusted to control the residence time in the particle device, thereby improving the agglomeration effect of the sound wave on the particulate matter;

[0022] 2. The present invention improves the existing sound source by adding blades and synchronous sliders between the resonant cavity and the cylinder, and can change the thrust on the blades by adjusting the driving pressure, thereby changing the amount of smoke inhaled;

[0023] 3. The present invention arranges shutter structures opposite to each other at the bottom of the high-frequency dust removal area. On the one hand, it can guide the smoke particles into the next dust removal area. On the other hand, it can also avoid the secondary dusting of the agglomerated particles due to the airflow, thereby improving the separation effect of the smoke particles.

[0024] 4. The present invention can improve the smoke turbulence and centrifugal separation effect in the dust removal area by installing a plurality of swirl blades at the entrance of the high-frequency dust removal area and horizontally tangentially arranged connecting pipes at the entrance of the low-frequency dust removal area, thereby increasing the local concentration of smoke particles and prolonging the residence time of the particles in the sound field, thereby improving the agglomeration effect of sound waves on smoke particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a schematic diagram of the overall appearance structure of an embodiment of the present invention;

[0027] Figure 2 It is an internal cross-sectional view of an embodiment of the present invention;

[0028] Figure 3 It is a schematic cross-sectional structure diagram of a high-frequency airflow sound source according to an embodiment of the present invention;

[0029] Figure 4 This is the overall appearance diagram of the cylinder diameter adjustable structure of an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a guide mechanism of an embodiment of the present invention;

[0031] Figure 6This is a comparison chart of smoke transmittance in Example 2;

[0032] Figure 7 This is the microstructure of smoke before and after agglomeration using acoustic agglomeration and centrifugal separation.

[0033] In the figure: 1-box; 2-inlet orifice plate; 3-first airflow sound source; 4-second airflow sound source; 5-smoke outlet; 6-dust collecting drawer; 7-smoke inlet; 8-overflow ring; 9-swirl blade; 10-cylinder diameter adjustment mechanism; 11-conical filter screen; 12-guide plate; 13-connecting pipe; 14-inner cylinder; 31-resonance cavity; 101-straight plate; 102-support tile; 103-sliding blade; 104-resonance cavity sleeve; 105-synchronous slider. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with specific implementation cases. The following implementation cases will help those skilled in the art to further understand the present invention, but will not limit the present invention in any form.

[0035] like Figure 1 and Figure 2 As shown, the device includes a box body 1, a first airflow sound source 3, a second airflow sound source 4, a dust collecting drawer 6, an air intake pressure regulating component, a guide mechanism and an inner cylinder 14. The first airflow sound source 3 and the second airflow sound source 4 are both installed on the top of the box body 1. The first airflow sound source 3 and the second airflow sound source 4 are respectively used for inhaling and discharging airflow. The dust collecting drawer 6 is connected to the bottom end of the box body 1 for collecting separated solid particles. The guide mechanism and the inner cylinder 14 are both fixedly connected to the lower part of the box body 1. The air intake pressure regulating component is fixedly connected to the upper part of the box body 1, and the air intake pressure regulating component and the first airflow sound source 3 are fixedly connected.

[0036] A vertical cross partition is arranged inside the box body 1, and the cross partition divides the cavity inside the columnar box body 1 into a first dust removal zone and a second dust removal zone. The bottoms of the first dust removal zone and the second dust removal zone are connected by a connecting pipe 13. A smoke inlet 7 and a smoke outlet 5 are opened at the top of the side wall of the box body 1. The smoke inlet 7 and the smoke outlet 5 are respectively located in the first dust removal zone and the second dust removal zone, and the smoke inlet 7 and the smoke outlet 5 are symmetrically arranged with the central axis of the box body 1 as the symmetry axis, that is, the smoke inlet 7 and the smoke outlet 5 are located on the same diameter of the box body 1. The first airflow sound source 3 and the second airflow sound source 4 are respectively installed at the top of the first dust removal zone and the second dust removal zone. The first airflow sound source 3 is used to drive the airflow from the smoke inlet 7 to enter the first dust removal zone, and the airflow in the first dust removal zone flows to the second dust removal zone through the connecting pipe 13. The second airflow sound source 4 is used to drive the airflow from the second dust removal zone to the outside atmosphere through the smoke outlet 5.

[0037] Specifically, the first dust removal area and the second dust removal area are both semi-cylindrical structures, the areas of the first dust removal area and the second dust removal area are the same size, a through hole is set at the bottom of the partition, and the connecting pipe 13 passes through the through hole on the partition to connect the first dust removal area and the second dust removal area.

[0038] like Figure 3 and Figure 4 As shown, the intake pressure regulating assembly includes an inlet orifice plate 2, a swirl blade 9 and a barrel diameter regulating mechanism 10, and the swirl blade 9 and the barrel diameter regulating mechanism 10 are both mounted on the inlet orifice plate 2; the barrel diameter regulating mechanism 10 includes a straight plate 101, a support tile 102, a triangular sliding blade 103, a resonant cavity sleeve 104 and a synchronous slider 105, and the inner ring of the inlet orifice plate 2 is evenly spaced along the circumference of the inlet orifice plate 2. Each slide groove is arranged along the radial direction of the inlet orifice plate 2, and a plurality of support tiles 102 are evenly spaced along the circumference of the inlet orifice plate 2, and the support tiles 102 can be mounted on the inlet orifice plate 2 so as to be movable along the radial direction of the inlet orifice plate 2, and a straight plate 101 is arranged between each two adjacent support tiles 102. Plate 101, the outer end surface of the straight plate 101 is connected to the inner wall of the box body 1 through a spring, a straight plate track is fixedly installed on the inner side of the straight plate 101, and each support tile 102 is provided with a support tile groove on the left and right sides. The support tile 102 can be movably installed on the straight plate track of the straight plate 101 through the support tile groove to change the distance between two adjacent support tiles 102. The inner wall of the resonance cavity sleeve 104 is connected to the resonance cavity 31 of the first airflow sound source 3, one end of the sliding blade 103 is movably connected to the outer wall of the resonance cavity sleeve 104 through the synchronous slider 105, and the other end of the sliding blade 103 is fixedly connected to the inner wall of the support tile 102. The sliding blade 103 is initially arranged to be inclined upward.

[0039] The inlet orifice plate 2, swirl blades 9 and barrel diameter adjustment mechanism 10 are all located in the first dust removal area in the box body 1. The inlet orifice plate 2 is located below the first airflow sound source 3. The inlet orifice plate 2 is horizontally installed on the top of the first dust removal area in the box body 1. The inlet orifice plate 2 is provided with a plurality of orifice through holes for conducting airflow. A plurality of swirl blades 9 are installed on the upper surface of the inlet orifice plate 2 at evenly spaced intervals along the circumference of the inlet orifice plate 2. Each swirl blade 9 is arranged along the radial direction of the inlet orifice plate 2 and the rotation direction of each swirl blade 9 is consistent. The outer periphery of the swirl blade 9 is fixedly connected to the side wall of the box body 1, and the barrel diameter adjustment mechanism 10 is connected to the upper surface of the inlet orifice plate 2.

[0040] The straight plate 101 and the support tile 102 form a hollow cylindrical cylinder with a variable diameter. The sliding blade 103 and the resonance cavity sleeve 104 are both located in the cylinder. When the airflow enters the first dust removal zone from the smoke inlet 7, the airflow pushes the end of the inclined sliding blade 103 close to the resonance cavity sleeve 104 to move downward, and the horizontal projection length of the sliding blade 103 increases, thereby increasing the interval between the resonance cavity sleeve 104 and the support tile 102, thereby changing the inner diameter ratio between the cylinder and the resonance cavity 31 in the first airflow sound source 3, so as to achieve strong adsorption of the airflow in the first dust removal zone.

[0041] like Figure 5 As shown, the guide mechanism is mainly composed of a conical filter 11 and an annular guide plate 12, both of which are located above the connecting pipe 13, and the guide mechanism is located in the first dust removal area in the box body 1, and the outer periphery of the annular guide plate 12 is fixedly connected to the inner wall of the box body 1, and the annular guide plate 12 is mainly composed of a plurality of louver blades evenly spaced along the same diameter of the annular guide plate 12, and the conical filter 11 is mainly composed of a hollow conical cylinder located at the upper part and a hollow cylindrical cylinder located at the lower part, and a plurality of column through holes for conducting airflow are opened on the hollow conical cylinder, and the hollow cylindrical cylinder adopts a column structure with openings at both ends, and the outer wall of the hollow cylindrical cylinder is fixedly connected to the middle of the guide plate 12, and the bottom of the conical filter 11 is connected to the inlet of the connecting pipe 13, and the outlet of the connecting pipe 13 is connected to the lower part of the second dust removal area in the box body 1.

[0042] The inner cylinder 14 is located in the second dust removal area in the box body 1. The inner cylinder 14 adopts a cylindrical structure with openings at both ends. A plurality of spiral blades are installed on the outer wall of the inner cylinder 14. A plurality of inner cylinder through holes for conducting airflow are opened on the bottom side wall of the inner cylinder 14. The airflow in the first dust removal area is separated by the conical filter 11 and enters the connecting pipe 13. The airflow flows from the outlet of the connecting pipe 13 to the second dust removal area. The airflow in the second dust removal area then flows out of the second dust removal area from bottom to top through the inner cylinder 14.

[0043] The connecting pipe 13 is only provided with a pipe wall surface on the side wall, and the top and bottom of the connecting pipe 13 are both conductive structures, so that the bottom of the conical filter 11 is connected to the dust collecting drawer 6 at the bottom of the box body 1 through the connecting pipe 13, and the bottom of the inner tube 14 is connected to the dust collecting drawer 6 at the same time.

[0044] Specifically, an overflow ring 8 is provided on the inner wall surface of the horn of the second airflow sound source 4 to prevent some particles from directly passing through the horn of the second airflow sound source 4 and flowing out of the box 1 .

[0045] The sound frequency of the first airflow sound source 3 is greater than the sound frequency of the second airflow sound source 4. The frequency of the first airflow sound source 3 is 6000-10000 Hz, and the frequency of the second airflow sound source 4 is 1500-4000 Hz. The sound pressure levels of the first airflow sound source 3 and the second airflow sound source 4 are both 140-160 dB.

[0046] The smoke inlet 7 and the smoke outlet 5 of the box body 1 are sucked and discharged through the side openings of the airflow sound source, respectively. A plurality of swirl blades 9 are arranged on the inlet orifice plate 2. The sliding blades of the cylinder diameter adjustment mechanism 10 are located between the resonance cavity 31 of the first airflow sound source 3 and the cylinder. The cylinder is composed of a support tile 102 and a straight plate 101. The guide plate 12 guides the smoke flow direction through the shutters arranged oppositely. The connecting pipe 13 is horizontally arranged between the first dust removal area and the second dust removal area. The outer wall of the inner cylinder 14 is provided with a spiral plate, which is used for centrifugal separation. The overflow The ring 8 is installed at the lower end of the horn of the second airflow sound source 4, and the overflow ring 8 prevents particles from being discharged directly from the smoke outlet 5; the first airflow sound source 3 and the second airflow sound source 4 are supplied with air by an air compressor, and the airflow pressure provided is 0.1MPa~0.3MPa; the inner and outer chamfer ratio of the resonance cavity 31 of the first airflow sound source 3 is 0.75~1.5, and the conical filter 11 for inhaling airflow is fixed on the guide plate 12, and a number of holes are opened horizontally. The guide plate is provided with oppositely arranged shutters, and the shutters are inclined toward the connecting pipe 13. The connecting pipe 13 is arranged horizontally between the first dust removal area and the second dust removal area. The outer wall of the inner tube 14 has a spiral structure and occupies 1 / 2~3 / 4 of the channel, and a number of holes are opened on the top of the inner tube 14 facing the smoke outlet 5.

[0047] The overflow ring 8 is located at the lower end of the second airflow sound source horn and is 10 to 30 mm high. The cylinder includes no less than 4 support tiles 101 and straight plates 102, which are used in conjunction with the limiting slide grooves on the inlet orifice plate 2 to adjust the diameter ratio between the cylinder and the resonant cavity 31, and the adjustment range is 2.0 to 2.7:1.

[0048] The embodiment of the present invention includes the following steps:

[0049] First, the air compressor is used to supply air to the first airflow sound source 3 and the second airflow sound source 4, so that the first airflow sound source 3 and the second airflow sound source 4 are started. After the first airflow sound source 3 is started, the airflow is driven to enter the first dust removal area from the smoke inlet 7. The airflow in the first dust removal area applies thrust to the sliding blade 103, so that the end of the inclined sliding blade 103 close to the resonance cavity sleeve 104 moves up and down, and the horizontal projection length of the sliding blade 103 increases. The support tile 102 connected to the sliding blade 103 moves radially along the inlet orifice plate 2. It is expanded outward, thereby increasing the interval between the resonance cavity sleeve 104 and the support tile 102, and further changing the inner diameter ratio between the cylinder and the resonance cavity 31 in the first airflow sound source 3, so as to achieve strong adsorption of the airflow in the first dust removal zone, and then the strongly adsorbed airflow in the first dust removal zone is separated by the conical filter 11 and enters the connecting pipe 13, and the airflow flows from the outlet of the connecting pipe 13 to the second dust removal zone, and the airflow in the second dust removal zone then flows out of the second dust removal zone from bottom to top through the inner cylinder 14, and flows into the external atmosphere from the smoke outlet 5.

[0050] The amount of smoke entering the smoke elimination device of the present invention is affected by the diameter ratio of the cylinder and the resonance cavity 31. The intake pressure of the airflow sound source can be adjusted to apply different pressures to the sliding blade 103 of the cylinder diameter adjustment mechanism 10, thereby changing the distance between the resonance cavity and the horn of the first airflow sound source, thereby achieving a higher inhalation volume.

[0051] The airflow sound source smoke elimination device coupled with centrifugal separation disclosed in Example 1 was used to compare the smoke treatment effect of the present invention with centrifugal separation and the smoke treatment effect of the prior art without centrifugal separation under the condition of using only acoustic wave agglomeration for smoke treatment. The driving pressure of the airflow sound source was 0.15 MPa, the frequency of the high-frequency airflow sound source was 8100 Hz, and the frequency of the low-frequency airflow sound source was 3000 Hz.

[0052] The results are as follows Figure 6 As shown, under the action of airflow sound source only, the light transmittance of smoke reaches 85% in about 60 seconds; under the combined action of airflow sound source and centrifugal separation, the light transmittance of smoke can reach 90% in about 50 seconds.

[0053] In addition, the microstructure of fire smoke particles before and after treatment was photographed using a scanning electron microscope. Figure 7 The initial particle size of the polystyrene fire smoke is very small, mostly around 1um, and the distribution is relatively dispersed; the size of the agglomerates of the treated fire smoke particles can reach about 50um, and the smoke elimination effect is very obvious.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An airflow sound source smoke elimination device coupled with centrifugal separation, characterized in that: The invention comprises a box (1), a first airflow sound source (3), a second airflow sound source (4), a dust collecting drawer (6), an air intake pressure regulating assembly, a guide mechanism and an inner cylinder (14); the first airflow sound source (3) and the second airflow sound source (4) are both mounted on the top of the box (1); the dust collecting drawer (6) is connected to the bottom of the box (1) and is used to collect separated solid particles; the guide mechanism and the inner cylinder (14) are both fixedly connected to the bottom of the box (1); the air intake pressure regulating assembly is fixedly connected to the top of the box (1); and the air intake pressure regulating assembly is fixedly connected to the first airflow sound source (3).

2. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 1, characterized in that: A vertical transverse partition is provided inside the box body (1), and the transverse partition divides the cavity inside the box body (1) into a first dust removal area and a second dust removal area. The airflow in the first dust removal area flows to the second dust removal area through a connecting pipe (13). The bottoms of the first dust removal area and the second dust removal area are connected through the connecting pipe (13). A smoke inlet (7) and a smoke outlet (5) are provided at the top of the side wall of the box body (1). The smoke inlet (7) and the smoke outlet (5) are respectively located in the first dust removal area and the second dust removal area. A first airflow sound source (3) and a second airflow sound source (4) are respectively installed at the top of the first dust removal area and the second dust removal area.

3. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 2, characterized in that: The intake pressure regulating assembly comprises an inlet orifice plate (2), a swirl blade (9) and a cylinder diameter regulating mechanism (10), wherein the swirl blade (9) and the cylinder diameter regulating mechanism (10) are both mounted on the inlet orifice plate (2); The cylinder diameter adjustment mechanism (10) comprises a straight plate (101), a support shoe (102), a sliding vane (103), a resonant cavity sleeve (104) and a synchronous slider (105). The inner ring of the inlet orifice plate (2) is provided with a plurality of sliding grooves. The support shoe (102) can be mounted on the inlet orifice plate (2) in a radially movable manner along the inlet orifice plate (2). A straight plate (101) is arranged between each two adjacent support shoes (102). The outer end surface of the straight plate (101) is connected to the inner wall of the box body (1) through a spring. The support shoe (102) is movably mounted on the straight plate track of the straight plate (101) through the support shoe groove. The inner wall of the resonant cavity sleeve (104) is connected to the resonant cavity (31) of the first airflow sound source (3). One end of the sliding vane (103) is movably connected to the outer wall of the resonant cavity sleeve (104) through the synchronous slider (105), and the other end is fixedly connected to the inner wall of the support shoe (102).

4. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 3 is characterized by: The inlet orifice plate (2) is horizontally mounted on the top of the first dust removal zone in the housing (1); a plurality of swirl blades (9) are evenly spaced and mounted on the upper surface of the inlet orifice plate (2) along the circumference of the inlet orifice plate (2); each swirl blade (9) is arranged along the radial direction of the inlet orifice plate (2); the outer periphery of the swirl blade (9) is fixedly connected to the side wall of the housing (1); and the cylinder diameter adjustment mechanism (10) is connected to the inlet orifice plate (2).

5. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 3, characterized in that: The straight plate (101) and the support tile (102) form a hollow cylindrical cylinder, and the sliding blade (103) and the resonance cavity sleeve (104) are both located in the cylinder. When the airflow enters the first dust removal area from the smoke inlet (7), the airflow pushes the end of the sliding blade (103) close to the resonance cavity sleeve (104) to move downward, thereby increasing the interval between the resonance cavity sleeve (104) and the support tile (102), thereby changing the inner diameter ratio between the cylinder and the resonance cavity (31) in the first airflow sound source (3).

6. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 2, characterized in that: The guide mechanism mainly consists of a conical filter (11) and a guide plate (12); the outer periphery of the annular guide plate (12) is fixedly connected to the inner wall of the box body (1); a column through hole is provided at the upper part of the conical filter (11); the lower part of the conical filter (11) is fixedly connected to the guide plate (12); and the bottom of the conical filter (11) is connected to the inlet of the connecting pipe (13).

7. The airflow sound source smoke elimination device coupled with centrifugal separation according to claim 2, characterized in that: The inner cylinder (14) is located in the second dust removal zone in the housing (1), and a plurality of spiral blades are installed on the outer wall of the inner cylinder (14). The airflow in the first dust removal zone is separated by the conical filter (11) and then enters the connecting pipe (13). The airflow flows from the outlet of the connecting pipe (13) to the second dust removal zone, and the airflow in the second dust removal zone then flows out of the second dust removal zone from bottom to top through the inner cylinder (14).

8. A method for eliminating smoke by coupling centrifugal separation with an airflow sound source applied to the device described in any one of claims 1 to 7, characterized in that: The following steps are involved: First, an air compressor is used to supply air to the first airflow sound source (3) and the second airflow sound source (4). After the first airflow sound source (3) is started, the airflow is driven to enter the first dust removal zone from the smoke inlet (7). The airflow in the first dust removal zone applies a thrust to the sliding blade (103), so that the end of the sliding blade (103) close to the resonance cavity sleeve (104) moves up and down, and the support tile (102) connected to the sliding blade (103) is radially expanded outward along the inlet orifice plate (2), so that The interval between the resonant cavity sleeve (104) and the support tile (102) increases, changing the inner diameter ratio between the cylinder and the resonant cavity (31) in the first airflow sound source (3). Then, the airflow adsorbed in the first dust removal zone is separated by the conical filter (11) and enters the connecting pipe (13). The airflow flows from the outlet of the connecting pipe (13) to the second dust removal zone. The airflow in the second dust removal zone then flows out of the second dust removal zone from bottom to top through the inner cylinder (14) and flows into the external atmosphere from the smoke outlet (5).

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