Ultrasonic dust removal device

Abstract

The utility model relates to an ultrasonic dust removal device which comprises a main body provided with a positive pressure cavity which extends lengthwise along a first direction; the shunting block is connected with the main body, and at least part of the shunting block extends into the positive pressure cavity; the shunting block is provided with an air inlet and an air outlet which are communicated; the air outlets are formed in at least one end of the flow dividing block in the first direction and are configured to guide airflow to the positive pressure cavity in the first direction. The main body is further provided with an air blowing cavity, and the air blowing cavity longitudinally extends in the first direction and is arranged at one end of the positive pressure cavity in the second direction; the blowing cavity comprises a communicating flow channel and at least two ultrasonic generating cavities connected in series through the communicating flow channel, the blowing cavity communicates with the positive pressure cavity through the communicating flow channel, and the communicating flow channel away from the positive pressure cavity forms a blowing flow channel capable of blowing air to the outside; the ultrasonic generating cavity expands outwards relative to the communicating flow channel in the third direction; the first direction, the second direction and the third direction intersect pairwise.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to an ultrasonic dust removal device. Background Art

[0002] During the production process of the battery cell, dust, debris, etc. are likely to fall on the electrode sheet. If not cleaned in time, it will affect the battery quality and cause micro short circuit inside the battery cell.

[0003] At present, the dust removal methods in the lithium battery industry include air knife dust removal and brush dust removal. Brush dust removal is a contact type of dust removal. To a certain extent, contact dust removal will affect the surface quality and physical properties of the electrode sheet itself, and the brush is easy to adhere to dust particles, making the electrode sheet potentially subject to secondary pollution. Therefore, attention should be paid to cleaning and replacing the brush in brush dust removal, which also increases the maintenance cost. Air knife dust removal is a non-contact type of dust removal. However, the airflow blown by the traditional air knife will form a stable flow field on the surface of the electrode sheet, so it cannot act on the particulate matters such as dust impurities in the air viscous layer above the electrode sheet, and cannot complete the dust removal task well either. Summary of the Utility Model

[0004] Based on this, in view of the problem of poor dust removal performance of traditional dust removal methods, it is necessary to provide an ultrasonic dust removal device that can improve the dust removal performance.

[0005] An ultrasonic dust removal device includes:

[0006] A main body having a positive pressure chamber, and the positive pressure chamber extends longitudinally along a first direction;

[0007] A flow dividing block connected to the main body, with at least a part extending into the positive pressure chamber; the flow dividing block has a communicating air inlet and air outlet; the air outlet is arranged at at least one end of the flow dividing block along the first direction and is configured to guide the air flow along the first direction to the positive pressure chamber;

[0008] The main body further has a blowing chamber, the blowing chamber extends longitudinally along the first direction and is arranged at one end of the positive pressure chamber along a second direction; the blowing chamber includes a communicating flow channel and at least two ultrasonic generating chambers connected in series through the communicating flow channel, the blowing chamber is communicated with the positive pressure chamber through the communicating flow channel, and the communicating flow channel far from the positive pressure chamber forms a blowing flow channel capable of blowing air to the outside; the ultrasonic generating chamber bulges outwards relative to the communicating flow channel along a third direction;

[0009] The first direction, the second direction and the third direction intersect pairwise.

[0010] In the above ultrasonic dust removal device, the external air flow enters through the air inlet of the flow dividing block and flows from the air inlet to the air outlet. Since the air outlet is connected to the positive pressure chamber and is provided at at least one end of the flow dividing block along the first direction, the air outlet can direct the air flow to the positive pressure chamber along the first direction, so that the positive pressure chamber is filled with air flow at all positions in its longitudinal extension direction. The high-pressure air flow in the positive pressure chamber can sequentially flow through each ultrasonic generating chamber through the communication flow channel and finally flow to the outside through the blowing air flow channel. Since the positive pressure chamber is filled with air flow at all positions in the longitudinal extension direction and the extension direction of the blowing chamber is the same as that of the positive pressure chamber, the ultrasonic generating chamber is filled with air flow at all positions in the longitudinal extension direction, ensuring the ultrasonic generating effect, and thus enabling the ultrasonic dust removal device to have better dust removal performance. At the same time, when the high-speed fluid passes through the positive pressure chamber, the fluid self-excited oscillation generates acoustic energy, and a phenomenon of shedding vortex - acoustic wave - new shedding vortex - new acoustic wave occurs in the flow field of the positive pressure chamber. By connecting multiple ultrasonic generating chambers in series, an acoustic streaming resonance phenomenon (i.e., standing wave mode) will occur, thereby generating high-frequency noise and air flow to form ultrasonic waves. The air flow is blown out through the blowing air flow channel. When the air flow blows out of the blowing air flow channel, the high-frequency vibrating air flow will continue to vibrate and vortex on the end face of the ultrasonic dust removal device in the second direction, thereby acting on the part to be cleaned for dust removal.

[0011] In one embodiment, the flow dividing block includes a connecting portion and a penetrating portion connected to each other. The penetrating portion penetrates through the main body along the third direction and is received into the positive pressure chamber, and the connecting portion is located outside the positive pressure chamber and is connected to the main body.

[0012] The air inlet is provided on the connecting portion, and the air outlet is provided on the penetrating portion.

[0013] In one embodiment, the shape of the first cross-section of the flow dividing block is T-shaped, and the second direction and the third direction are parallel to the first cross-section.

[0014] The vertical portion of the T-shape of the flow dividing block forms the penetrating portion, and the horizontal portion forms the connecting portion.

[0015] In one embodiment, the ultrasonic dust removal device further includes a joint, the joint is connected to the flow dividing block, and the air inlet is communicated with the outside through the joint.

[0016] In one embodiment, the ultrasonic dust removal device includes a plurality of the flow dividing blocks, and the plurality of flow dividing blocks are sequentially installed on the main body along the first direction.

[0017] In one embodiment, the plurality of flow dividing blocks are located on the same straight line along the first direction.

[0018] In one embodiment, the number of the flow splitting blocks is two, each of the flow splitting blocks has two air outlets, and the two air outlets on each flow splitting block are opposite to each other along the first direction.

[0019] In one embodiment, the flow splitting block has two air outlets, and the two air outlets are directly opposite to each other along the first direction.

[0020] In one embodiment, the main body includes 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 respectively arranged at two ends of the splicing structure along the first direction, and the flow splitting block is connected to the splicing structure;

[0021] The first splicing plate, the second splicing plate, the connecting column and the two end plates together form the positive pressure chamber; the first splicing plate, the second splicing plate and the two end plates together form the blowing chamber.

[0022] In one embodiment, at least one of the first splicing plate and the second splicing plate has a groove at one end away from the air blowing channel along the second direction, and the groove extends along the first direction;

[0023] The ultrasonic dust removal device further includes a sealing strip, and the sealing strip is hermetically arranged in the groove. Description of the Drawings

[0024] Figure 1 The front view of the ultrasonic dust removal device provided by an embodiment of the present application;

[0025] Figure 2 is Figure 1 The sectional view of the A-A plane of the ultrasonic dust removal device shown in

[0026] Figure 3 is Figure 1 The side view of the ultrasonic dust removal device shown in

[0027] Figure 4 is Figure 1 The top view of the ultrasonic dust removal device shown in

[0028] Explanation of the Reference Numerals:

[0029] 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. Gasket; 20. Shunt block; 21. Air outlet; 22. Connecting part; 23. Penetrating part; 30. Positive pressure chamber; 40. Blowing chamber; 41. Connecting flow channel; 42. Ultrasonic generating chamber; 43. Blowing flow channel; 50. Connector. Detailed implementation manners

[0030] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model 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 utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by 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", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0033] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

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

[0037] The ultrasonic dust removal device 100 includes a main body 10 and a shunt block 20. The main body 10 has a positive pressure chamber 30 that extends longitudinally along a first direction. The shunt block 20 is connected to the main body 10, and at least a part of the shunt block 20 extends into the positive pressure chamber 30. The shunt block 20 has an air inlet and an air outlet 21 that communicate with each other. The air outlet 21 is disposed at at least one end of the shunt block 20 along the first direction, and the air outlet 21 is configured to direct (guide) the airflow into the positive pressure chamber 30 along the first direction.

[0038] Continuing to refer to Figure 2, the main body 10 further has a blowing cavity 40. The blowing cavity 40 extends longitudinally along a first direction and is arranged at one end of the positive pressure cavity 30 along a second direction. The blowing cavity 40 includes a connecting flow channel 41 and at least two ultrasonic generating cavities 42 connected in series through the connecting flow channel 41. The blowing cavity 40 is communicated with the positive pressure cavity 30 through the connecting flow channel 41. The connecting flow channel 41 far from the positive pressure cavity 30 forms a blowing flow channel 43 for blowing air to the outside. That is, in the flowing direction of the air flow, the connecting flow channel 41 located at the most downstream forms the blowing flow channel 43. Wherein, the ultrasonic generating cavity 42 bulges outwards relative to the connecting flow channel 41 along a third direction. That is, the ultrasonic generating cavity 42 bulges outwards relative to the connecting flow channel 41 to form a bulging part (or swelling part) of the blowing cavity 40. The first direction, the second direction and the third direction intersect pairwise. Specifically, the first direction, the second direction and the third direction are perpendicular to each other pairwise. 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 Figure 1 the X direction in Figure 1 and Figure 2 the Z direction in Figure 2 the Y direction in

[0039] With the above settings, the external air flow enters through the air inlet of the flow dividing 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 is arranged at at least one end of the flow dividing 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 all positions in its longitudinal extension direction. The high-pressure air flow in the positive pressure cavity 30 can flow through each ultrasonic generating cavity 42 in sequence through the connecting 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 all positions in the longitudinal extension direction and the extension direction of the blowing cavity 40 is the same as that of the positive pressure cavity 30, all positions in the longitudinal extension direction of the ultrasonic generating cavity 42 are filled with air flow, which ensures the ultrasonic generating effect and further enables the ultrasonic dust removal device 100 to have better dust removal performance.

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

[0041] It should also be noted here that when the high-speed fluid passes through the positive pressure chamber 30, the fluid self-excited oscillation generates acoustic energy, and the phenomenon of shedding vortex - acoustic wave - new shedding vortex - new acoustic wave occurs in the flow field of the positive pressure chamber 30. Further, by connecting multiple ultrasonic generating chambers 42 in series, the phenomenon of acoustic streaming resonance (i.e., standing wave mode) will occur, thereby generating high-frequency noise and air flow with a frequency above 20 kHz, which can be evaluated as ultrasonic waves. Finally, the air flow is blown out through the blowing air passage 43. When the air flow blows out of the blowing air passage 43, the high-frequency vibrating air flow will continue to vibrate and vortex on the end face of the ultrasonic dust removal device 100 in the second direction, thereby acting on the part to be cleaned. The dust on the part to be cleaned is forced to move, so as to break away from the surface of the part to be cleaned to achieve the purpose of dust removal.

[0042] It should be noted here that before using the ultrasonic dust removal device 100, if the part to be cleaned is subjected to static elimination and then ultrasonic dust removal, more beneficial effects will be achieved.

[0043] In some embodiments, referring to Figures 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 passes through and fixes 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 both 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 together form the positive pressure chamber 30, and the first splicing plate 11, the second splicing plate 12 and the two end plates 14 together form the blowing chamber 40. On the one hand, the main body 10 is formed by splicing multiple components, which is convenient for the formation of the positive pressure chamber 30 and the blowing chamber 40. On the other hand, the first splicing plate 11 and the second splicing plate 12 are fixedly connected by the connecting column 13, ensuring the fixing effect of the first splicing plate 11 and the second splicing plate 12.

[0044] Optionally, the two ends of the connecting column 13 form threaded parts, and the threaded parts at both ends are respectively threadedly connected to 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 both ends of the splicing structure along the first direction, and the end plates 14 and the splicing structure can be fixedly connected by screws. At the same time, a sealing gasket 17 is arranged between the end plates 14 and the splicing structure to reduce leakage and ensure the stability of the pressure in the positive pressure chamber 30.

[0046] Further, continue to refer to Figure 2, at least one of the first splicing plate 11 and the second splicing plate 12 has a groove 15 at one end 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 includes a sealing strip 16, and the sealing strip 16 is hermetically arranged in the groove 15. With such a setting, it is possible to prevent air flow from leaking out between the first splicing plate 11 and the second splicing plate 12, ensure the sealing effect, and further ensure the stability of the pressure in the positive pressure chamber 30.

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

[0048] In some embodiments, continue to refer to Figure 2 , the flow dividing block 20 includes a connecting portion 22 and a penetrating portion 23 connected to each other. The penetrating portion 23 penetrates through the main body 10 in the third direction and is received in the positive pressure chamber 30, and the connecting portion 22 is located outside the positive pressure chamber 30 and is connected to 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 through the main body 10 in the third direction through the penetrating portion 23, and when the main body 10 includes the first splicing plate 11 and the second splicing plate 12, the flow dividing block 20 penetrates through the first splicing plate 11 and the second splicing plate 12 through the penetrating portion 23, avoiding 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 to the main body 10 through the connecting portion 22, ensuring 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 in contact with the cavity wall of the positive pressure chamber 30 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 vertical part of the T-shaped flow dividing block 20 forms the penetrating portion 23, and the horizontal 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 through the main body 10 and be connected and fixed to the main body 10.

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

[0052] The ultrasonic dust removal device further includes a joint 50, the joint 50 is connected to the flow dividing block 20, and the air inlet is communicated with the outside through the joint 50. The setting of the joint 50 facilitates the communication between the flow dividing block 20 and the outside.

[0053] Optionally, the air inlet is provided at one end of the connecting portion 22 away from the penetrating portion 23 along the third direction. The connector 50 is connected to the connecting portion 22, and the air inlet passage of the connector 50 extends along the third direction. In this way, the air flow can enter the air inlet passage of the connector 50 along the third direction and enter the air inlet through the air inlet passage. In some other embodiments, the position of the air inlet provided on the flow dividing block 20 is not specifically limited.

[0054] Preferably, continue to refer to Figure 1 and Figure 4 , the ultrasonic dust removal device 100 includes a plurality of flow dividing blocks 20, and the plurality of flow dividing blocks 20 are sequentially installed on the main body 10 along the first direction. Since the plurality of flow dividing blocks 20 are arranged in the longitudinal extension direction of the positive pressure chamber 30, under the action of the plurality of flow dividing blocks 20, the positive pressure chamber 30 is filled with air flow everywhere in its longitudinal direction to ensure the ultrasonic generation effect and further ensure the dust removal performance.

[0055] Furthermore, the plurality of flow dividing blocks 20 are located on the same straight line along the first direction, avoiding the misalignment of each flow dividing block 20 in the first direction, which is not only convenient for installation but also can improve the flow dividing and guiding effect.

[0056] In some specific embodiments, the number of the flow dividing blocks 20 is two, and the two flow dividing blocks 20 are respectively provided with two air outlet ports 21. The two air outlet ports 21 on each flow dividing block 21 are opposite to each other along the first direction. In this way, when the number of the flow dividing blocks 20 is small, a good flow dividing and guiding effect is ensured.

[0057] Furthermore, the two air outlet ports 21 of the flow dividing block 20 are directly opposite to each other in the first direction, that is, the positive projection of the first air outlet port 21 towards the plane where the second air outlet port 21 is located completely coincides with the second air outlet port 21 to further improve the flow dividing and guiding effect.

[0058] It can be imagined that in some other embodiments, the number of the flow dividing blocks 20 included in the ultrasonic dust removal device 100 is not limited. For example, the flow dividing block 20 can also be set to one or more than two.

[0059] In some embodiments, continue to refer to Figure 2 , the shape of the second cross-section of the ultrasonic generating chamber 42 is rectangular, the length direction of the rectangle is parallel to the third direction, and the rectangle has a chamfered corner to ensure the ultrasonic generation effect. Among them, 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 generating chamber 42 is not limited, such as it can also be circular, triangular, etc.

[0060] Specifically, the radius of the above-mentioned rounded corner is 0.2 mm - 0.8 mm. In this way, the shape of the ultrasonic generating cavity 42 can be approximated as a circle, which helps the movement of sound waves, reduces the loss of energy (the sound wave energy generated by agitation), improves the audio frequency effect, and thus saves the air flow rate.

[0061] The distance between every two adjacent ultrasonic generating cavities 42 in the second direction is 2 mm - 3 mm. In the second direction, the size of the air blowing channel 43 is 3 mm - 5 mm; in the third direction, the size of the air blowing channel 43 is 0.1 mm - 0.3 mm. With such a design, a good ultrasonic generating effect can be ensured.

[0062] Furthermore, the ratio of the size of the second cross-section of the ultrasonic generating cavity 42 in the third direction to the size in the second direction is 1 - 2. Optionally, the ratio of the size of the second cross-section of the ultrasonic generating 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 generating cavity 42 in the second direction is 2 mm - 3 mm. With such a design, a good ultrasonic generating effect can be ensured.

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

[0064] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0065] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. An ultrasonic dust removal device, characterized in that, Comprising: A main body (10) having a positive pressure chamber (30) that extends longitudinally in a first direction; A flow splitting block (20) connected to the main body (10), at least partially extending into the positive pressure chamber (30); the flow splitting block (20) has a connected air inlet and an air outlet (21); the air outlet (21) is arranged at at least one end of the flow splitting block (20) along the first direction and is configured to direct an air flow to the positive pressure chamber (30) along the first direction; The main body (10) further has a blowing chamber (40) that extends longitudinally in the first direction and is arranged at one end of the positive pressure chamber (30) along a second direction; the blowing chamber (40) includes a connecting flow channel (41) and at least two ultrasonic generating chambers (42) connected in series through the connecting flow channel (41), the blowing chamber (40) is connected to the positive pressure chamber (30) through the connecting flow channel (41), and the connecting flow channel (41) away from the positive pressure chamber (30) forms a blowing flow channel (43) capable of blowing air to the outside; the ultrasonic generating chamber (42) bulges outwards relative to the connecting flow channel (41) in a third direction; The first direction, the second direction, and the third direction intersect pairwise.

2. The ultrasonic dust removal device according to claim 1, wherein The flow splitting block (20) includes a connecting portion (22) and a penetrating portion (23) connected to each other, the penetrating portion (23) penetrates through the main body (10) in the third direction and is received into the positive pressure chamber (30), and the connecting portion (22) is located outside the positive pressure chamber (30) and is connected to 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).

3. The ultrasonic dust removal device according to claim 2, characterized in that The shape of the first cross-section of the flow splitting block (20) is T-shaped, and the second direction and the third direction are parallel to the first cross-section; The longitudinal portion of the T-shape of the flow splitting block (20) forms the penetrating portion (23), and the transverse portion forms the connecting portion (22).

4. The ultrasonic dust removal device according to claim 1, wherein The ultrasonic dust removal device further includes a connector (50), the connector (50) is connected to the flow splitting block (20), and the air inlet is communicated with the outside through the connector (50).

5. The ultrasonic dust removal device according to claim 1, characterized in that, The ultrasonic dust removal device includes a plurality of the flow splitting blocks (20), and the plurality of flow splitting blocks (20) are sequentially installed on the main body (10) along the first direction.

6. The ultrasonic dust removal device according to claim 5, characterized in that The plurality of flow splitting blocks (20) are located on the same straight line along the first direction.

7. The ultrasonic dust removal device according to claim 5, characterized in that, The number of the flow splitting blocks (20) is two, each of the flow splitting blocks (20) respectively has two of the air outlets (21), and the two air outlets (21) on each flow splitting block (20) are opposite to each other along the first direction.

8. The ultrasonic dust removal device according to claim 1, wherein, The flow splitting block (20) has two of the air outlets (21), and the two air outlets (21) are directly opposite to each other along the first direction.

9. The ultrasonic dust removal device according to claim 1, characterized in that, 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) penetrates and fixes 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 both ends of the splicing structure along the first direction. 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) together form the positive pressure chamber (30); the first splicing plate (11), the second splicing plate (12) and the two end plates (14) together form the air blowing chamber (40).

10. The ultrasonic dust removal device according to claim 9, characterized in that, At least one of the first splicing plate (11) and the second splicing plate (12) has a groove (15) at one end away from the air blowing channel (43) along the second direction, and the groove (15) extends along the first direction; The ultrasonic dust removal device further includes a sealing strip (16), and the sealing strip (16) is hermetically arranged in the groove (15).

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