Ultrasonic dust removal device

Abstract

An ultrasonic dust removal device, comprising: a main body (10), which is provided with a positive pressure cavity (30) extending lengthwise in a first direction; and a flow distribution block (20), which is connected to the main body (10) and at least partially extends into the positive pressure cavity (30), wherein the flow distribution block (20) is provided with an air inlet and an air outlet (21) that are in communication with each other, the air outlet (21) being disposed at least at one end of the flow distribution block (20) in the first direction and being configured to guide airflow in the first direction into the positive pressure cavity (30). The main body (10) is further provided with an air blowing cavity (40) extending lengthwise in the first direction and disposed at one end of the positive pressure cavity (30) in a second direction; the air blowing cavity (40) comprises a communicating flow channel (41) and at least two ultrasonic generation cavities (42) connected in series by means of the communicating flow channel (41), wherein the air blowing cavity (40) is in communication with the positive pressure cavity (30) by means of the communicating flow channel (41), the communicating flow channel (41) away from the positive pressure cavity (30) forming an air blowing flow channel (43) capable of blowing air to the outside; and the ultrasonic generation cavities (42) expand outwards in a third direction relative to the communicating flow channel (41); the first direction, the second direction and the third direction intersect each other pairwise. The ultrasonic dust removal device can improve dust removal performance.

Description

Ultrasonic dust removal device

[0001] The present disclosure claims priority to Chinese Patent Application No. 202421896424.6, filed on August 7, 2024, entitled "Ultrasonic Dust Removal Device", and Chinese Patent Application No. 202421908862.X, filed on August 7, 2024, entitled "Ultrasonic Dust Removal Device", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of dust removal equipment, in particular to an ultrasonic dust removal device. BACKGROUND

[0003] During the production process of the battery cell, dust, debris, etc. are prone to fall on the pole piece. If not cleaned in time, it will affect the quality of the battery and cause internal micro-short circuit of the battery cell.

[0004] The current dust removal method in the lithium battery industry includes air knife dust removal and brush dust removal. Brush dust removal is a contact type dust removal. The contact dust removal will affect the surface quality and physical properties of the pole piece to some extent, and the brush is easy to attach dust particles, which may cause secondary pollution to the pole piece. Therefore, the brush dust removal needs to pay attention to cleaning and replacing the brush, which also increases the maintenance cost. The air knife dust removal is a non-contact dust removal. However, the airflow blown by the traditional air knife will form a stable flow field on the surface of the pole piece. Therefore, it cannot act on the particles such as dust impurities in the air adhesion layer above the pole piece, and cannot complete the dust removal task well. SUMMARY

[0005] Therefore, it is necessary to provide an ultrasonic dust removal device capable of improving the dust removal performance in view of the problem of poor dust removal performance of the traditional dust removal method.

[0006] An ultrasonic dust removal device, comprising:

[0007] A main body having a positive pressure cavity, the positive pressure cavity extending longitudinally along a first direction;

[0008] A flow distribution block connected to the main body and at least partially extending into the positive pressure cavity; the flow distribution block has a communication inlet and a communication outlet; the communication outlet is arranged at at least one end of the flow distribution block along the first direction and is configured to guide airflow to the positive pressure cavity along the first direction;

[0009] The main body also has a blowing cavity which extends along the first direction and is arranged at one end of the positive pressure cavity along a second direction; the blowing cavity comprises a communication flow channel and at least two ultrasonic wave generating cavities connected in series through the communication flow channel, the blowing cavity is communicated with the positive pressure cavity through the communication flow channel, and the communication flow channel away from the positive pressure cavity forms a blowing flow channel capable of blowing air to the outside; the ultrasonic wave generating cavities expand outward relative to the communication flow channel along a third direction.

[0010] The first direction, the second direction and the third direction intersect with each other.

[0011] The above ultrasonic dust removal device, the outside air flow enters through the gas inlet of the flow distribution block, and flows from the gas inlet to the gas outlet. Since the gas outlet is communicated with the positive pressure cavity and arranged at least one end of the flow distribution block along the first direction, the gas outlet can guide the air flow to the positive pressure cavity along the first direction, so that the positive pressure cavity is filled with air flow in the longitudinal direction. The high-pressure air flow in the positive pressure cavity can flow through each ultrasonic wave generating cavity in turn through the communication flow channel, and finally flow to the outside through the blowing flow channel. Since the positive pressure cavity is filled with air flow in the longitudinal direction, the extension direction of the blowing cavity is the same as that of the positive pressure cavity, so that the ultrasonic wave generating cavities are filled with air flow in the longitudinal direction, ensuring the ultrasonic wave generating effect, and further improving the dust removal performance of the ultrasonic dust removal device. At the same time, when the high-speed fluid passes through the positive pressure cavity, the fluid self-excited oscillation generates sound wave energy, and the shedding vortex-sound wave-new shedding vortex-new sound wave phenomenon occurs in the flow field of the positive pressure cavity. The sound flow resonance phenomenon (i.e. standing wave mode) is generated by adopting the series connection mode of multiple ultrasonic wave generating cavities, and high-frequency noise and air flow are generated. When the air flow blows out of the blowing flow channel, the high-frequency vibration air flow will continue to vibrate and swirl on the end face of the ultrasonic dust removal device in the second direction, so as to act on the cleaning object for dust removal.

[0012] In one embodiment, the flow distribution block comprises a connecting portion and a penetrating portion connected with each other, the penetrating portion penetrates the main body along the third direction and is accommodated into the positive pressure cavity, and the connecting portion is located outside the positive pressure cavity and connected with the main body;

[0013] The gas inlet is arranged at the connecting portion, and the gas outlet is arranged at the penetrating portion.

[0014] In one embodiment, the first cross section of the flow distribution block is in the shape of T, and the second direction and the third direction are parallel to the first cross section;

[0015] The vertical part of the T-shaped flow distribution block forms the penetrating portion, and the horizontal part forms the connecting portion.

[0016] In one of the embodiments, the ultrasonic dust removal device further comprises a joint connected to the flow dividing block, and the air inlet is connected to the outside through the joint.

[0017] In one of the embodiments, the ultrasonic dust removal device comprises a plurality of flow dividing blocks, and the plurality of flow dividing blocks are sequentially arranged along the first direction on the main body.

[0018] In one of the embodiments, the plurality of flow dividing blocks are located on the same straight line along the first direction.

[0019] In one of the embodiments, the number of the flow dividing blocks is two, and each of the flow dividing blocks has two air outlets, and the two air outlets on each of the flow dividing blocks are opposite along the first direction.

[0020] In one of the embodiments, the flow dividing block has two air outlets, and the two air outlets are opposite along the first direction.

[0021] In one of the embodiments, the main body comprises a first splicing plate, a second splicing plate, a connecting column and two end plates, the first splicing plate and the second splicing plate are spliced along the third direction, the connecting column is arranged along the third direction to fix the first splicing plate and the second splicing plate to form a splicing structure, and the two end plates are arranged at two ends of the splicing structure along the first direction, and the flow dividing block is connected to the splicing structure.

[0022] The first splicing plate, the second splicing plate, the connecting column and the two end plates jointly form the positive pressure cavity, and the first splicing plate, the second splicing plate and the two end plates jointly form the air blowing cavity.

[0023] In one of the embodiments, at least one of the first splicing plate and the second splicing plate has a groove away from one end of the air blowing channel along the second direction, and the groove extends along the first direction.

[0024] The ultrasonic dust removal device further comprises a sealing strip, and the sealing strip is arranged in the groove. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a front view of an ultrasonic dust removal device according to an embodiment of the present application;

[0026] FIG. 2 is a sectional view of A-A of the ultrasonic dust removal device shown in FIG. 1;

[0027] FIG. 3 is a side view of the ultrasonic dust removal device shown in FIG. 1;

[0028] FIG. 4 is a top view of the ultrasonic dust removal device shown in FIG. 1.

[0029] Explanation of reference signs: 100, ultrasonic dust removal device; 10, main body; 11, first splicing plate; 12, second splicing plate; 13, connecting column; 14, end plate; 15, groove; 16, sealing strip; 17, sealing gasket; 20, flow dividing block; 21, air outlet; 22, connecting part; 23, penetrating part; 30, positive pressure cavity; 40, air blowing cavity; 41, communicating flow channel; 42, ultrasonic wave generating cavity; 43, air blowing flow channel; 50, joint. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present disclosure, so the present disclosure is not limited by the specific embodiments disclosed below.

[0031] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0034] In the present disclosure, unless specifically stated and limited otherwise, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0035] It is noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In addition, it is to be understood that the term "connected" as used herein refers to any connection by which a given element interacts with another element, either directly or indirectly, and can be electrically connected, magnetically connected, or connected through an intermediate element. As used herein, the terms "vertical", "horizontal", "up", "down", "left", "right", and the like, are merely used for the purpose of explanation and are not intended to be limiting.

[0036] Referring to FIG. 1 and FIG. 2, an embodiment of the present disclosure provides an ultrasonic dust removal device 100 for generating ultrasonic waves to remove dust on a piece to be cleaned. Optionally, the piece to be cleaned is a pole piece. Of course, in some other embodiments, the type of the piece to be cleaned is not limited.

[0037] The ultrasonic dust removal device 100 includes a main body 10 and a flow dividing block 20. The main body 10 has a positive pressure cavity 30 extending longitudinally along a first direction. The flow dividing block 20 is connected to the main body 10, and at least a portion of the flow dividing block 20 extends into the positive pressure cavity 30. The flow dividing block 20 has an air inlet and an air outlet 21 in communication with each other. The air outlet 21 is disposed at at least one end of the flow dividing block 20 along the first direction, and the air outlet 21 is configured to guide air flow into the positive pressure cavity 30 along the first direction.

[0038] Continuing to refer to FIG. 2, the main body 10 further has a blowing cavity 40, which extends longitudinally along the first direction and is arranged at one end of the positive pressure cavity 30 along the second direction. The blowing cavity 40 includes a communication flow channel 41 and at least two ultrasonic wave generating cavities 42 connected in series through the communication flow channel 41. The blowing cavity 40 is communicated with the positive pressure cavity 30 through the communication flow channel 41, and the communication flow channel 41 away from the positive pressure cavity 30 forms a blowing flow channel 43 for blowing air to the outside. That is, in the flow direction of the air flow, the communication flow channel 41 located at the most downstream forms the blowing flow channel 43. Among them, the ultrasonic wave generating cavities 42 are outwardly bulged relative to the communication flow channel 41 along the third direction, that is, the ultrasonic wave generating cavities 42 are outwardly bulged relative to the communication flow channel 41 to form the bulging part (or the bulging part) of the blowing cavity 40. The first direction, the second direction and the third direction intersect with each other. Specifically, the first direction, the second direction and the third direction are perpendicular to each other. In some specific embodiments, the first direction is the length direction of the ultrasonic dust removal device 100, the second direction is the height direction of the ultrasonic dust removal device 100, and the third direction is the width direction of the ultrasonic dust removal device 100. That is, the first direction is the X direction in FIG. 1, the second direction is the Z direction in FIG. 1 and FIG. 2, and the third direction is the Y direction in FIG. 2.

[0039] The above arrangement is that the external air flow enters through the air inlet of the shunt block 20 and flows from the air inlet to the air outlet 21. Since the air outlet 21 is communicated with the positive pressure cavity 30 and arranged at at least one end of the shunt block 20 along the first direction, the air outlet 21 can guide the air flow to the positive pressure cavity 30 along the first direction, so that the positive pressure cavity 30 is filled with air flow at each place in the longitudinal extension direction. The high-pressure air flow of the positive pressure cavity 30 can flow through each ultrasonic wave generating cavity 42 in turn through the communication flow channel 41, and finally flow to the outside through the blowing flow channel 43. Since the positive pressure cavity 30 is filled with air flow at each place in the longitudinal extension direction, the extension direction of the blowing cavity 40 is the same as that of the positive pressure cavity 30, so that the ultrasonic wave generating cavities 42 are filled with air flow at each place in the longitudinal extension direction, which ensures the ultrasonic wave generating effect, and further makes the ultrasonic dust removal device 100 have better dust removal performance.

[0040] It should be noted that generally, the length of the blowing cavity 40 longitudinally extending is equal to that of the positive pressure cavity 30, that is, the blowing cavity 40 and the positive pressure cavity 30 are opposite to each other in the second direction and have equal lengths extending in the first direction.

[0041] It should be noted that when the high-speed fluid passes through the positive pressure cavity 30, the fluid self-excited oscillation generates sound wave energy, and the shedding vortex-sound wave-new shedding vortex-new sound wave phenomenon occurs in the flow field of the positive pressure cavity 30. Further, the sound flow resonance phenomenon (i.e. standing wave mode) is generated by using multiple ultrasonic wave generating cavities 42 in series, and high frequency noise and airflow are generated, and the frequency can reach more than 20 kHz, which can be evaluated as ultrasonic waves. Finally, the airflow is blown out through the blowing flow channel 43, and when the airflow is blown out of the blowing flow channel 43, the high-frequency vibrating airflow will continue to vibrate and swirl at the end face of the second direction of the ultrasonic dust removal device 100, thereby acting on the to-be-cleaned part, and the dust on the to-be-cleaned part is moved by the external force, thereby separating from the surface of the to-be-cleaned part to achieve the dust removal purpose.

[0042] It should be noted that before the ultrasonic dust removal device 100 is used, the to-be-cleaned part is subjected to electrostatic elimination, and then the ultrasonic dust removal is performed, which has a more beneficial effect.

[0043] In some embodiments, referring to FIGS. 1-4, the main body 10 includes a first splicing plate 11, a second splicing plate 12, a connecting column 13, and two end plates 14. The first splicing plate 11 and the second splicing plate 12 are spliced along the third direction, the connecting column 13 is provided through and fixed to the first splicing plate 11 and the second splicing plate 12 along the third direction to form a splicing structure, the two end plates 14 are respectively arranged at two ends of the splicing structure along the first direction, and the flow dividing block 20 is connected to the splicing structure. The first splicing plate 11, the second splicing plate 12, the connecting column 13, and the two end plates 14 jointly form the positive pressure cavity 30, and the first splicing plate 11, the second splicing plate 12, and the two end plates 14 jointly form the blowing cavity 40. On the one hand, the main body 10 is formed by splicing a plurality of components, which facilitates the formation of the positive pressure cavity 30 and the blowing cavity 40; on the other hand, the first splicing plate 11 and the second splicing plate 12 are fixedly connected through the connecting column 13, which ensures the fixing effect of the first splicing plate 11 and the second splicing plate 12.

[0044] Optionally, the connecting column 13 is provided with threaded portions at two ends, and the threaded portions at the two ends are respectively threadedly connected with the first splicing plate 11 and the second splicing plate 12, thereby ensuring the fixing effect of the first splicing plate 11 and the second splicing plate 12.

[0045] The two end plates 14 are arranged at two ends of the splicing structure along the first direction, and the end plate 14 and the splicing structure can be fixedly connected through screws. At the same time, a sealing gasket 17 is arranged between the end plate 14 and the splicing structure to reduce leakage and ensure the stability of the pressure in the positive pressure cavity 30.

[0046] Further, referring to FIG. 2, at least one of the first joint plate 11 and the second joint plate 12 has a groove 15 at one end thereof away from the air blowing channel 43 in the second direction, and the groove 15 extends in the first direction. The ultrasonic dust removal device 100 further comprises a sealing strip 16, which is arranged in the groove 15. In this way, the air flow can be prevented from leaking out of the first joint plate 11 and the second joint plate 12, so as to ensure the sealing effect and further ensure the stability of the pressure in the positive pressure cavity 30.

[0047] In some embodiments, the first joint plate 11 is provided with the groove 15, and part of the sealing strip 16 is arranged in the groove 15 on the first joint plate 11. In other embodiments, the second joint plate 12 is provided with the groove 15, and part of the sealing strip 16 is arranged in the groove 15 on the second joint plate 12. In still other embodiments, the first joint plate 11 and the second joint plate 12 are both provided with the groove 15, and the sealing strip 16 is arranged in the two grooves 15.

[0048] In some embodiments, referring to FIG. 2, the flow dividing block 20 comprises a connecting portion 22 and a penetrating portion 23 connected with each other, the penetrating portion 23 penetrates the main body 10 in the third direction and is accommodated into the positive pressure cavity 30, and the connecting portion 22 is located outside the positive pressure cavity 30 and connected with the main body 10. The air inlet is arranged on the connecting portion 22, and the air outlet 21 is arranged on the penetrating portion 23. Since the flow dividing block 20 penetrates the main body 10 in the third direction through the penetrating portion 23, and when the main body 10 comprises the first joint plate 11 and the second joint plate 12, the flow dividing block 20 penetrates the first joint plate 11 and the second joint plate 12 through the penetrating portion 23, so as to avoid occupying the space of the ultrasonic dust removal device 100 in the second direction; at the same time, the flow dividing block 20 is connected with the main body 10 through the connecting portion 22, so as to ensure the fixing effect of the flow dividing block 20 and the main body 10.

[0049] Optionally, one end of the penetrating portion 23 away from the connecting portion 22 is connected with the cavity wall of the positive pressure cavity 30, so as to ensure the fixing effect of the flow dividing block 20 and the main body 10.

[0050] The shape of the first cross section of the flow dividing block 20 is T-shaped, and the second direction and the third direction are parallel to the first cross section. The longitudinal part of the T-shaped flow dividing block 20 forms the penetrating portion 23, and the transverse part forms the connecting portion 22. The T-shaped flow dividing block 20 not only has a simple structure, but also is convenient to penetrate the main body 10 and to be connected and fixed with the main body 10.

[0051] It can be understood that in other embodiments, the shape of the flow dividing block 20 is not limited.

[0052] The ultrasonic dust removal device further comprises a connector 50 connected with the flow dividing block 20, and the air inlet is connected with the outside through the connector 50. The arrangement of the connector 50 facilitates the communication between the flow dividing block 20 and the outside.

[0053] Optionally, the air inlet is arranged at one end of the connecting portion 22 away from the through portion 23 along the third direction, and the joint 50 is connected to the connecting portion 22, and the air inlet channel of the joint 50 extends along the third direction. In this way, the airflow can enter the air inlet channel of the joint 50 along the third direction, and enter the air inlet through the air inlet channel. In some other embodiments, the position of the air inlet arranged on the flow splitter 20 is not specifically limited.

[0054] Preferably, referring to FIGS. 1 and 4, the ultrasonic dust removal device 100 comprises a plurality of flow splitters 20, which are sequentially arranged on the main body 10 along the first direction. Since the plurality of flow splitters 20 are arranged in the longitudinal extension direction of the positive pressure cavity 30, the positive pressure cavity 30 is filled with airflow at each position in the longitudinal direction under the action of the plurality of flow splitters 20, so as to ensure the ultrasonic wave generating effect and further ensure the dust removal performance.

[0055] Further, the plurality of flow splitters 20 are located on the same straight line along the first direction, avoiding misalignment of each flow splitter 20 in the first direction, which not only facilitates installation but also improves the flow splitting and guiding effect.

[0056] In some specific embodiments, the number of flow splitters 20 is two, and each of the two flow splitters 20 is provided with two air outlets 21. The two air outlets 21 on each flow splitter 20 are opposite to each other along the first direction. In this way, in the case of a small number of flow splitters 20, a good flow splitting and guiding effect is ensured.

[0057] Further, the two air outlets 21 of the flow splitter 20 are directly opposite to each other along the first direction, i.e., the first air outlet 21 is completely coincident with the normal projection of the plane on which the second air outlet 21 is located, so as to further improve the flow splitting and guiding effect.

[0058] It is conceivable that in some other embodiments, the number of flow splitters 20 included in the ultrasonic dust removal device 100 is not limited, such as one or more than two flow splitters 20.

[0059] In some embodiments, referring to FIG. 2, the second cross section of the ultrasonic wave generating cavity 42 is rectangular, the length direction of the rectangle is parallel to the third direction, and the rectangle has rounded corners to ensure the ultrasonic wave generating effect. The second direction and the third direction are both parallel to the second cross section. It should be understood that in some other embodiments, the shape of the second cross section of the ultrasonic wave generating cavity 42 is not limited, such as a circle, a triangle, etc.

[0060] Specifically, the radius of the above-mentioned rounded corner is 0.2mm-0.8mm. In this way, the shape of the ultrasonic wave generating cavity 42 can be approximately circular, which is helpful for the movement of the sound wave, reduces the loss of energy (the energy of the sound wave generated by the oscillation), improves the sound frequency effect, and further saves the airflow flow rate.

[0061] The distance between every two adjacent ultrasonic cavities 42 in the second direction is 2mm-3mm. In the second direction, the size of the blowing channel 43 is 3mm-5mm; in the third direction, the size of the blowing channel 43 is 0.1mm-0.3mm. In this way, better ultrasonic effect can be ensured.

[0062] Further, the ratio of the size of the second cross section of the ultrasonic cavity 42 in the third direction to the size in the second direction is 1-2. Alternatively, the ratio of the size of the second cross section of the ultrasonic cavity 42 in the third direction to the size in the second direction is 1.2. The size of the second cross section of the ultrasonic cavity 42 in the second direction is 2mm-3mm. In this way, better ultrasonic effect can be ensured.

[0063] It should be noted that the size of the second cross section of the ultrasonic cavity 42 in the second direction and the third direction is the maximum size in the direction. In some embodiments, when the shape of the second cross section of the ultrasonic cavity 42 is rectangular, the size in the second direction is the width of the rectangle, and the size in the third direction is the length of the rectangle. At this time, the ratio of the size in the length direction to the size in the width direction of the second cross section of the ultrasonic cavity 42 is 1-2, and if the size in the width direction is 2mm-3mm, then the size in the length direction is 2mm-6mm.

[0064] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the disclosure.

[0065] The above-described embodiments only express several implementation manners of the disclosure, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the disclosure, several modifications and improvements can be made, which are within the protection scope of the disclosure. Therefore, the protection scope of the patent of the disclosure should be subject to the appended claims.

Claims

1. An ultrasonic dust removing device, characterized by comprising: The application relates to an ultrasonic dust removing device. The device comprises: a main body with a positive pressure cavity which extends longitudinally along a first direction; a flow distribution block connected to the main body and at least partially inserted into the positive pressure cavity; the flow distribution block has a gas inlet and a gas outlet which are in communication; the gas outlet is arranged at at least one end of the flow distribution block along the first direction and is configured to guide the airflow to the positive pressure cavity along the first direction; the main body further has a blowing cavity which extends longitudinally along the first direction and is arranged at one end of the positive pressure cavity along a second direction; the blowing cavity comprises a communication flow channel and at least two ultrasonic wave generating cavities which are connected in series through the communication flow channel; the blowing cavity is connected to the positive pressure cavity through the communication flow channel, and the communication flow channel away from the positive pressure cavity forms a blowing flow channel which can blow air to the outside; the ultrasonic wave generating cavities expand outwardly along a third direction relative to the communication flow channel; 2. The ultrasonic dedusting device according to claim 1, characterized in that, the first direction, the second direction and the third direction intersect with each other. The flow distribution block comprises a connecting part and a penetrating part which are connected to each other; the penetrating part penetrates into the main body along the third direction and is accommodated into the positive pressure cavity; the connecting part is located outside the positive pressure cavity and is connected to the main body; 3. The ultrasonic dedusting device according to claim 2, characterized in that, the gas inlet is arranged on the connecting part, and the gas outlet is arranged on the penetrating part. The first cross section of the flow distribution block is in the shape of a T letter; the second direction and the third direction are parallel to the first cross section; 4. The ultrasonic dedusting device according to any one of claims 1 to 3, characterized in that, the longitudinal part of the T letter of the flow distribution block forms the penetrating part, and the transverse part forms the connecting part.

5. The ultrasonic dedusting device according to any one of claims 1 to 4, characterized in that, The ultrasonic dust removing device further comprises a connector which is connected to the flow distribution block; the gas inlet is connected to the outside through the connector.

6. The ultrasonic dedusting device according to claim 5, characterized in that The ultrasonic dust removing device comprises a plurality of flow distribution blocks which are sequentially arranged on the main body along the first direction.

7. The ultrasonic dedusting device according to claim 5 or 6, characterized in that The plurality of flow distribution blocks are located on the same straight line along the first direction.

8. The ultrasonic dedusting device according to any one of claims 1 to 7, characterized in that, The number of the flow distribution blocks is two; each of the flow distribution blocks has two gas outlets; the two gas outlets on each of the flow distribution blocks are opposite to each other along the first direction.

9. The ultrasonic dedusting device according to any one of claims 1 to 8, characterized in that, The flow distribution block has two gas outlets which are opposite to each other along the first direction. The main body comprises a first splicing plate, a second splicing plate, a connecting column and two end plates; the first splicing plate and the second splicing plate are spliced along the third direction; the connecting column penetrates and fixes the first splicing plate and the second splicing plate along the third direction to form a splicing structure; the two end plates are arranged at two ends of the splicing structure along the first direction; the flow distribution block is connected to the splicing structure; 10. The ultrasonic dedusting device according to claim 9, characterized in that, the first splicing plate, the second splicing plate, the connecting column and the two end plates jointly form the positive pressure cavity; the first splicing plate, the second splicing plate and the two end plates jointly form the blowing cavity. At least one of the first splicing plate and the second splicing plate has a groove which extends along the first direction and is away from one end of the blowing flow channel along the second direction; the ultrasonic dust removing device further comprises a sealing strip which is sealingly arranged in the groove.

Images