A vibrating dust cleaning device

Abstract

The present invention relates to the field of dust cleaning, and particularly to a vibration type dust cleaning device. It includes a sound generating mechanism and a sound transmission pipe. The sound transmission pipe is used to conduct sound waves from the sound generating mechanism to the equipment to be dust cleaned; at the connection between the sound transmission pipe and the main housing of the sound generating mechanism, an elastic connection structure and a rotational connection structure are provided. The elastic connection structure includes a plurality of elastic sheets. The plurality of elastic sheets are stacked in a staggered manner in the circumferential direction and enclose a circle. The rotational connection structure is configured to prevent the axial separation of the sound transmission pipe and the main housing when the sound transmission pipe is in contact with the main housing and allow the sound transmission pipe and the main housing to rotate relative to each other circumferentially by a preset angle. Through the arrangement of the elastic sheets, the connection reliability can be increased after the transmission pipe and the main housing are fastened, preventing the loosening of the connection position under long-term vibration. At the same time, through the arrangement of the rotational connection structure, a rotation step is added during the cooperation, so that the elastic sheets are pressed against each other tightly after rotation, forming a complete closed circle, improving the sealing performance and reducing the loss of sound waves.

Description

Technical Field

[0001] The present invention relates to the field of dust cleaning, and particularly to a vibrating dust cleaning device. Background Art

[0002] The acoustic soot blower uses compressed air as the energy source for sound waves or infrasound waves. The high-strength titanium diaphragm oscillates self-excitedly under the action of the compressed air gas source and generates resonance in the resonance cavity, converting the potential energy of the compressed air into low-frequency sound energy. The sound energy is transmitted to the corresponding ash accumulation point through the air medium, enabling the sound wave to exert an "acoustic fatigue" effect on the ash and slag. Due to the repeated action of the sound wave oscillation, the load applied to the ash and slag changes cyclically in extrusion. When reaching a certain number of cyclic stress times, the structure of the ash and slag is damaged due to fatigue, and then the ash and slag are removed from the surface of the adherend by gravity or by the fluid medium, achieving the effect of dust cleaning. When the acoustic soot blower is in use, vibrations will occur due to the transmission of sound waves. The vibrations are likely to cause the connections at the joints to become loose and the sealing to weaken, thereby resulting in the loss of sound waves at the connection positions and affecting the dust cleaning effect.

[0003] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] According to the deficiencies of the prior art, the present invention proposes a vibrating dust cleaning device to solve the problems of poor connection reliability and weak sealing at the joints of the existing acoustic soot blowers.

[0005] The vibrating dust cleaning device of the present invention adopts the following technical solutions: It includes a sound generating mechanism and a sound transmission pipe. The sound generating mechanism is configured to be able to generate sound waves; one end of the sound transmission pipe is detachably connected to the main housing of the sound generating mechanism, and the other end is detachably connected to the equipment to be dust cleaned. The sound transmission pipe is used to conduct the sound waves from the sound generating mechanism to the equipment to be dust cleaned;

[0006] An elastic connection structure is provided at the connection between the sound transmission pipe and the main housing. The elastic connection structure includes an elastic piece and a sinking groove. The elastic piece and the sinking groove are respectively arranged on the end face of one of the main housing and the sound transmission pipe, and the elastic piece corresponds to the position of the sinking groove; a sound transmission hole is provided at the center of the main housing, and the port of the sound transmission pipe is coaxial with the sound transmission hole. There are multiple elastic pieces, and the multiple elastic pieces are stacked in sequence and offset along the circumferential direction and enclose a circle around the port of the sound transmission pipe or the periphery of the sound transmission hole of the main housing. The elastic pieces are inclined, and a part of the elastic piece is connected to the main housing or the sound transmission pipe; the extension dimension of the elastic piece along the axial direction of the port of the sound transmission pipe or the sound transmission hole is its width; the depth of the sinking groove is less than the initial width of the elastic piece. During installation, the elastic piece is located in the sinking groove, and the outer end of each elastic piece abuts against the inner peripheral wall of the sinking groove;

[0007] A rotating connection structure is provided between the sound transmission pipe and the main housing. The rotating connection structure is configured to prevent the axial separation of the sound transmission pipe and the main housing when they are in contact and allow the sound transmission pipe to rotate relative to the main housing circumferentially by a preset angle.

[0008] Optionally, the portion of the elastic sheet pressed by the adjacent elastic sheet is fixedly connected to the main housing or the sound transmission pipe.

[0009] Optionally, the rotating connection structure includes a mating block and a mating groove. The mating block and the mating groove are respectively provided on one of the end faces of the transmission pipe and the main housing. The mating block is T-shaped, and the cross-sectional shape of the mating groove is adapted to the mating block.

[0010] Optionally, a flared opening for inserting the mating block is provided at one end of the mating groove.

[0011] Optionally, the elastic sheet is arc-shaped in its width direction, and the bending direction is arched towards the direction close to the axis of the sound transmission hole.

[0012] Optionally, the sound generating mechanism includes the main housing, an end cap, and a metal diaphragm. The inside of the main housing has an annular boss located around the sound transmission hole. The end cap is detachably connected to the main housing. The metal diaphragm is disposed on the side of the end cap close to the main housing and abuts against the annular boss. A sealed air chamber and a sound transmission air chamber are defined between the metal diaphragm, the main housing, and the end cap. The sealed air chamber is located outside the annular boss, and the sound transmission air chamber is located at the center of the annular boss and communicates with the sound transmission hole. A balance air chamber is defined between the metal diaphragm and the end cap; a compressed air inlet is provided on the main housing, and the compressed air inlet communicates with the sealed air chamber. A breathing port is provided on the end cap, and the breathing port communicates with the outside and the balance air chamber.

[0013] Optionally, a muffler is provided at the breathing port.

[0014] Optionally, a connector is provided at the compressed air inlet, and the connector is connected to an air compressor through an air duct.

[0015] Optionally, the material of the metal diaphragm is titanium alloy.

[0016] Optionally, the end of the sound transmission pipe connected to the equipment to be dust-cleaned is flared.

[0017] The beneficial effects of the present invention are as follows: By providing a plurality of elastic sheets at the connection between the sound transmission pipe and the sound generating mechanism, the connection reliability of the connection position can be increased after the transmission pipe and the main housing of the sound generating mechanism are fastened, making the connection tighter, playing a shock-absorbing role during vibration, preventing the connection position from loosening under long-term vibration. At the same time, through the setting of the rotating connection structure, during mating, the rotation step is increased, so that after the elastic sheets are rotated and pressed, they are mutually pressed and closely attached to form a complete closed circle, which can improve the sealing performance while shock-absorbing and preventing loosening, reduce the loss of sound waves, and improve the dust-cleaning effect.

[0018] Furthermore, by setting the elastic piece to arch towards the axis of the sound transmission hole, when the elastic piece is in the process of the main housing of the sound generating mechanism fitting with the sound transmission tube, it continues to bend and deform towards the axis of the sound transmission hole. During use, the elastic piece has greater rigidity in the radial direction of the sound transmission hole. When the sound wave impacts the elastic piece, the elastic piece has stronger load-bearing capacity and less sound wave dissipation, further reducing the sound wave dissipation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a vibration type dust cleaning device of the present invention;

[0021] Figure 2 is Figure 1 the front view of;

[0022] Figure 3 is Figure 2 the A-A cross-sectional view in;

[0023] Figure 4 is Figure 3 the enlarged view at A in;

[0024] Figure 5 It is an exploded view of a vibration type dust cleaning device of the present invention;

[0025] Figure 6 It is a schematic diagram of the main housing of the sound generating mechanism of the present invention and its components thereon.

[0026] In the figure:

[0027] 100, sound generating mechanism; 110, main housing; 111, sound transmission hole; 112, annular boss; 113, sealed air cavity; 114, sound transmission air cavity; 120, end cover; 121, balance air cavity; 130, metal diaphragm; 140, silencer; 150, connector;

[0028] 200, sound transmission tube; 210, first tube; 220, second tube;

[0029] 310, elastic piece; 320, sinking groove;

[0030] 410, mating block; 420, mating groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1 to 6 shown, a vibration type dust cleaning device provided by an embodiment of the present invention includes a sound generating mechanism 100 and a sound transmission pipe 200; the sound generating mechanism 100 is configured to be able to generate sound waves; one end of the sound transmission pipe 200 is detachably connected to the main housing 110 of the sound generating mechanism 100 through bolts, and the other end is detachably connected to the equipment to be dust cleaned. The sound transmission pipe 200 is used to conduct the sound waves from the sound generating mechanism 100 to the equipment to be dust cleaned, so that the dust adhered to the dust accumulation points inside the equipment to be dust cleaned is peeled off under the oscillation of the sound waves, achieving the purpose of dust cleaning.

[0033] Among them, an elastic connection structure is provided at the connection between the sound transmission pipe 200 and the main housing 110. The elastic connection structure includes an elastic piece 310 and a sinking groove 320. The elastic piece 310 and the sinking groove 320 are respectively arranged on the end faces of one of the main housing 110 and the sound transmission pipe 200, and the positions of the elastic piece 310 and the sinking groove 320 correspond to each other.

[0034] The center of the main housing 110 has a sound transmission hole 111. The port of the sound transmission pipe 200 is coaxial with the sound transmission hole 111. There are multiple elastic pieces 310. The multiple elastic pieces 310 are stacked in a staggered manner in sequence along the circumferential direction and enclose a circle around the port of the sound transmission pipe 200 or the sound transmission hole 111 of the main housing 110. The elastic pieces 310 are inclined. A part of the elastic piece 310 is connected to the main housing 110 or the sound transmission pipe 200. Specifically, it can be set that the part of the elastic piece 310 pressed by its adjacent elastic piece 310 is fixedly connected to the main housing 110 or the sound transmission pipe 200, and the connection method can be welding or others; the extension dimension of the elastic piece 310 along the axial direction of the port of the sound transmission pipe 200 or the sound transmission hole 111 is its width. The elastic piece 310 is a metal elastic piece, and specific materials can be selected from stainless steel, aluminum alloy, etc.; the depth of the sinking groove 320 is less than the initial width of the elastic piece 310. During installation, the elastic piece 310 is located in the sinking groove 320, and the outer end of each elastic piece 310 (the end close to the axis of the sound transmission hole 111 along the radial direction is the inner end, and the opposite is the outer end) abuts against the inner peripheral wall of the sinking groove 320.

[0035] A rotational connection structure is provided between the sound conduction tube 200 and the main housing 110. The rotational connection structure is configured to prevent the axial separation of the sound conduction tube 200 and the main housing 110 when they are in contact and to allow the sound conduction tube 200 and the main housing 110 to rotate relative to each other circumferentially by a preset angle.

[0036] In the installation of the solution provided in this embodiment, first, the end face of the sound conduction tube 200 is aligned and in contact with the end face of the main housing 110 of the sound generating mechanism 100. At this time, the elastic sheet 310 is located in the sinking groove 320. Since the elastic sheet 310 initially has a slight arc and the depth of the sinking groove 320 is less than the initial width of the elastic sheet 310, during the process of the end face of the sound conduction tube 200 gradually coming into contact with the end face of the main housing 110 of the sound generating mechanism 100, the elastic sheet 310 is squeezed and deformed. Then, the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100 are pre-connected through the rotational connection structure, and the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100 are rotated relative to each other, thereby giving the elastic sheet 310 a certain rotational tendency (because the elastic sheet 310 is inclined and the outer ends are in contact with the inner peripheral wall of the sinking groove 320). After the elastic sheet 310 rotates, its outer end moves inward, and adjacent elastic sheets 310 are pressed against each other to form a complete sealing ring. After the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100 are rotated in place, the bolts are tightened to fixedly connect the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100. Through the arrangement of a plurality of elastic sheets 310, the connection reliability of the connection position can be increased after the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100 are fastened, making the connection tighter, playing a shock-absorbing role during vibration, preventing the connection position from loosening under long-term vibration, and at the same time, through the arrangement of the rotational connection structure, during cooperation, the rotation step is increased, so that the elastic sheets 310 are pressed against each other and closely adhered after rotation, forming a complete closed ring, which can improve the sealing performance, reduce the loss of sound waves, and improve the dust cleaning effect while shock-absorbing and preventing loosening.

[0037] It should be noted that for the convenience of connection between the sound conduction tube 200 and the main housing 110 of the sound generating mechanism 100, a flange is provided at the end of the transmission tube, connection holes are opened on the flange, threaded holes are opened on the main housing 110 of the sound generating mechanism 100, the threaded holes correspond to the connection holes one by one, and bolts pass through the connection holes and are threadedly connected to the threaded holes.

[0038] In one embodiment, the rotational connection structure includes a mating block 410 and a mating groove 420. The mating block 410 and the mating groove 420 are respectively disposed on the end faces of one of the transfer tube and the main housing 110. The mating block 410 is T-shaped, and the cross-sectional shape of the mating groove 420 is adapted to that of the mating block 410. One end of the mating groove 420 is provided with a flared opening to facilitate the insertion of the mating block 410. In other embodiments, the mating block 410 can also be set as a rectangle, and the mating block 410 and the mating groove 420 adopt magnetic adsorption to prevent the transfer tube from detaching from the main housing 110 of the sound generating mechanism 100.

[0039] For the solutions given in the above embodiments, during installation, first insert the mating block 410 into the mating groove 420 until the end face of the sound transmission tube 200 fits against the end face of the main housing 110 of the sound generating mechanism 100. Then, rotate the sound transmission tube 200 relative to the main housing 110 to apply a rotational force to the elastic piece 310, causing the elastic pieces 310 to be pressed tightly against each other. Further, in the preferred embodiment given by the present invention, the mating groove 420 is semi-circular, and there are four threaded holes on the main housing 110. When the sound transmission tube 200 rotates relative to the main housing 110, it is ensured that the connection holes on the sound transmission tube 200 can be aligned with the threaded holes on the main housing 110.

[0040] For the convenience of structural arrangement, referring to Figure 4 、 Figure 5 and Figure 6 ,in the preferred embodiment given by the present invention, the elastic piece 310 is inclinedly disposed on the end face of the main housing 110, the sinking groove 320 is disposed on the end face of the sound transmission tube 200, the mating block 410 is disposed on the end face of the sound transmission tube 200, and the mating groove 420 is disposed on the end face of the main housing 110.

[0041] In a further embodiment, the elastic piece 310 is arc-shaped in its width direction and arched towards the direction close to the axis of the sound transmission hole 111. Such a setting makes the elastic piece 310 have an initial bending direction, and it is easier to bend and deform during the process of the sound transmission tube 200 fitting against the main housing 110 of the sound generating mechanism 100. At the same time, the bending direction is to continue to bend and deform towards the axis direction of the sound transmission hole 111. During use, the elastic piece 310 has greater rigidity in the radial direction of the sound transmission hole 111. When the sound wave impacts the elastic piece 310, the impact direction is opposite to the bending direction of the elastic piece 310, the bearing capacity of the elastic piece 310 is stronger, the sound wave loss is smaller, and the sound wave loss rate is further reduced.

[0042] In a further embodiment, the sound generating mechanism 100 is more specifically defined. The sound generating mechanism 100 includes the aforementioned main housing 110, end cap 120, and metal diaphragm 130. The main housing 110 is cylindrical, and the interior of the main housing 110 has an annular boss 112. The annular boss 112 is located around the sound transmission hole 111. The end cap 120 is disc-shaped and is detachably connected to the main housing 110. The metal diaphragm 130 is disposed on the side of the end cap 120 close to the main housing 110 and abuts against the annular boss 112. A sealed air chamber 113 and a sound transmission air chamber 114 are defined between the metal diaphragm 130, the main housing 110, and the end cap 120. The sealed air chamber 113 is located outside the annular boss 112, and the sound transmission air chamber 114 is located at the center of the annular boss 112 and communicates with the sound transmission hole 111. A balance air chamber 121 is defined between the metal diaphragm 130 and the end cap 120; a compressed air inlet is provided on the main housing 110, and the compressed air inlet communicates with the sealed air chamber 113. A breathing port is provided on the end cap 120, and the breathing port communicates with the outside and the balance air chamber 121.

[0043] Further, a silencer 140 is provided at the breathing port to prevent the sound generating mechanism 100 from causing sound pollution to the external environment.

[0044] A connector 150 is provided at the compressed air inlet. The connector 150 is connected to an air compressor through an air duct, and thus compressed air with a certain pressure can be introduced into the sealed air chamber 113.

[0045] Further, the material of the metal diaphragm 130 is titanium alloy. Titanium alloy has good physical and chemical properties such as heat resistance, strength, plasticity, toughness, formability, weldability, and corrosion resistance. It can generate sound waves well during vibration and has a long service life.

[0046] During use, the compressed air generated by the air compressor enters the sealed air chamber 113 through the connector 150. When the air pressure in the sealed air chamber 113 reaches a certain value, the metal diaphragm 130 is deformed and displaced towards the end cap 120 under pressure. A gap appears at the abutting portion of the annular boss 112 and the metal diaphragm 130. The gas in the sealed air chamber 113 rushes out through this gap and enters the sound transmission air chamber 114, causing the air pressure in the sealed air chamber 113 to decrease. The metal diaphragm 130 returns to its original state again and presses tightly against the annular boss 112, and the air pressure in the sealed air chamber 113 rises again. This cycle repeats, and the metal diaphragm 130 forms regular vibrations, thereby generating sound waves with a specific frequency. These sound waves are output to the equipment to be dust-cleaned through the sound transmission pipe 200 and act on the dust accumulation surface. The air molecules and dust particles vibrate, causing the dust to loosen and peel off, completing the dust cleaning.

[0047] Further, the end of the sound transmission pipe 200 connected to the equipment to be dust-cleaned is in a flared shape to facilitate the expansion of sound waves.

[0048] Further, for ease of installation and connection, the sound transmission pipe 200 adopts a segmented structure, and an elastic connection structure is provided between adjacent segments. In the preferred embodiment given by the present invention, the sound transmission pipe 200 is a two-segment structure, specifically including a first pipe 210 and a second pipe 220. An elastic connection structure and a rotational connection structure are provided between the first pipe 210 and the second pipe 220, and connection flanges are provided at the ends of the first pipe 210 and the second pipe 220 that are close to each other. Connection bolts are provided on the connection flanges to fixedly connect the first pipe 210 and the second pipe 220. One end of the first pipe 210 away from the second pipe 220 is connected to the main housing 110 of the sound generating mechanism 100, and the end of the second pipe 220 away from the first pipe 210 is in a horn shape and is connected to the equipment to be dust-cleaned. It can be understood that an elastic connection structure and a rotational connection structure can also be provided at the connection between the second pipe 220 and the equipment to be dust-cleaned to minimize sound wave loss and improve the dust-cleaning effect.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration type dust cleaning device, characterized in that: It includes a sound-generating mechanism and a sound-transmitting tube, wherein the sound-generating mechanism is configured to emit sound waves; one end of the sound-transmitting tube is detachably connected to the main housing of the sound-generating mechanism, and the other end is detachably connected to the device to be cleaned, and the sound-transmitting tube is used to transmit the sound waves from the sound-generating mechanism to the device to be cleaned; An elastic connection structure is provided at the connection between the sound transmission tube and the main shell, and the elastic connection structure includes an elastic sheet and a sinking groove, which are respectively arranged on the end surface of one of the main shell and the sound transmission tube, and the elastic sheet corresponds to the position of the sinking groove; a sound transmission hole is provided at the center of the main shell, and the port of the sound transmission tube is coaxial with the sound transmission hole; there are multiple elastic sheets, and the multiple elastic sheets are sequentially stacked in a staggered manner along the circumferential direction and surround the port of the sound transmission tube or the periphery of the sound transmission hole of the main shell, the elastic sheet is arranged obliquely, and part of the elastic sheet is connected to the main shell or the sound transmission tube; the extension dimension of the elastic sheet along the axial direction of the port or the sound transmission hole of the sound transmission tube is its width; The depth of the sinking groove is smaller than the initial width of the elastic sheet. The elastic sheet is arc-shaped in the width direction and the bending direction is arched in the direction close to the axis of the sound transmission hole, so that the elastic sheet has an initial bending direction, and is easier to bend and deform in the process of fitting the sound transmission tube and the main shell of the sound-generating mechanism. At the same time, the bending direction is to continue to bend and deform in the direction of the axis of the sound transmission hole. During use, the elastic sheet has greater rigidity in the radial direction of the sound transmission hole. When the sound wave impacts the elastic sheet, the impact direction is opposite to the bending direction of the elastic sheet. The elastic sheet has a stronger bearing capacity and less sound wave loss, further reducing the sound wave loss rate. When installed, the elastic sheet is located in the sinking groove, and the outer end of each elastic sheet abuts against the inner peripheral wall of the sinking groove. The part of the elastic sheet pressed by the adjacent elastic sheet is fixedly connected to the main shell or the sound transmission tube. A rotating connection structure is provided between the sound transmission tube and the main shell body. The rotating connection structure is configured to prevent the sound transmission tube from axially separating from the main shell body when the sound transmission tube and the main shell body are in affixed relationship and to allow the sound transmission tube and the main shell body to rotate circumferentially relative to each other by a preset angle. The rotating connection structure includes a matching block and a matching groove. The matching block and the matching groove are respectively provided on the end face of one of the transmission tube and the main shell body. The matching block is T-shaped. The cross-sectional shape of the matching groove is adapted to the matching block. One end of the matching groove is provided with a flared opening for inserting the matching block. During installation, the matching block is first inserted into the matching groove until the end face of the sound transmission tube is in affixed relationship with the end face of the main shell body of the sound-generating mechanism. Then, the sound transmission tube and the main shell body are relatively rotated to apply a rotational force to the elastic sheet so that the elastic sheets are pressed tightly against each other.

2. A vibration-type dust cleaning device according to claim 1, characterized in that: The sound-generating mechanism includes the main shell, the end cover and the metal diaphragm. The main shell has an annular boss inside, the annular boss is located outside the sound-transmitting hole, the end cover is detachably connected to the main shell, the metal diaphragm is arranged on the side of the end cover close to the main shell and abuts against the annular boss, a sealed air cavity and a sound-transmitting air cavity are defined between the metal diaphragm, the main shell and the end cover, the sealed air cavity is located outside the annular boss, the sound-transmitting air cavity is located at the center of the annular boss and connected to the sound-transmitting hole, and a balancing air cavity is defined between the metal diaphragm and the end cover; a compressed air inlet is provided on the main shell, the compressed air inlet is connected to the sealed air cavity, and a breathing port is provided on the end cover, the breathing port is connected to the outside and the balancing air cavity.

3. A vibration-type dust cleaning device according to claim 2, characterized in that: A silencer is provided at the breathing port.

4. A vibration-type dust cleaning device according to claim 2, characterized in that: A connector is provided at the compressed air inlet, and the connector is connected to the air compressor through an air guide pipe.

5. A vibration-type dust cleaning device according to claim 2, characterized in that: The material of the metal diaphragm is titanium alloy.

6. A vibration-type dust cleaning device according to claim 1, characterized in that: The end of the sound transmission tube connected to the equipment to be cleaned is in the shape of a bell.

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