Ultrasonic dust removal device

Abstract

The utility model relates to an ultrasonic dust removal device which comprises a main body and a bottom plate which are spliced along a first direction, a positive pressure cavity is formed in the main body, and an air blowing cavity is formed by the bottom plate and the main body; the positive pressure cavity and the air blowing cavity extend lengthwise in the second direction, the air blowing cavity comprises at least two ultrasonic generating cavities which expand outwards in the third direction in the first direction, and an air blowing flow channel which is communicated with the ultrasonic generating cavities and extends lengthwise in the second direction is formed in the bottom plate; one end of the housing in the first direction is provided with a first opening, and the other end of the housing is closed; the housing covers the main body, and the bottom plate is connected with the housing and seals the first opening; an air suction port is formed in the bottom plate, and the housing and the main body form a negative pressure cavity communicated with the air suction port; the first direction, the second direction and the third direction intersect in pairs.

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 battery cells, dust, debris, etc. are easily generated and fall onto the electrodes. If not cleaned in time, it will affect the quality of the battery and cause micro-short circuits inside the battery cells.

[0003] Currently, the lithium battery industry uses two dust removal methods: air knife dust removal and brush dust removal. Brush dust removal is a contact method, which can affect the surface quality and physical properties of the electrode itself to a certain extent. Furthermore, the brush is prone to accumulating dust particles, potentially causing secondary contamination of the electrode. Therefore, brush dust removal requires careful cleaning and brush replacement, which also increases maintenance costs. Air knife dust removal is a non-contact method, but the air blown by traditional air knives forms a stable flow field on the electrode surface, making it unable to affect dust impurities and other particulate matter in the viscous layer of air above the electrode, and thus, cannot effectively complete the dust removal task. Utility Model Content

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

[0005] An ultrasonic dust removal device, comprising:

[0006] A main body and a bottom plate are spliced ​​along a first direction, a positive pressure chamber is formed in the main body, and the bottom plate and the main body form an air blowing chamber; the positive pressure chamber and the air blowing chamber both extend longitudinally along a second direction, the air blowing chamber includes at least two ultrasonic generating chambers that expand outward along a third direction along the first direction, and a air blowing flow channel is formed on the bottom plate and is connected to the ultrasonic generating chamber and extends longitudinally along the second direction;

[0007] The cover has a first opening at one end in the first direction and is closed at the other end; the cover is arranged outside the main body, the bottom plate is connected to the cover and closes the first opening; the bottom plate is provided with an air intake port, and the cover and the main body form a negative pressure chamber connected to the air intake port;

[0008] The first direction, the second direction, and the third direction intersect with each other.

[0009] The ultrasonic dust removal device described above features multiple ultrasonic generating chambers arranged in series, facilitating the generation of ultrasonic waves. These waves are then blown toward the object to be cleaned via the airflow channel, achieving optimal dust removal. Furthermore, since the airflow channel is formed directly on the base plate, it avoids the need for splicing the airflow channel, ensuring the dimensional stability of the airflow channel. Furthermore, the cover is positioned externally to the main body, forming a negative pressure chamber with the cover and the main body. This avoids the need for complex structures to form the negative pressure chamber and simplifies the structure of the ultrasonic dust removal device.

[0010] In one embodiment, the main body includes a first splicing plate and a second splicing plate, the first splicing plate and the second splicing plate are spliced ​​along the third direction, and the bottom plate is spliced ​​with the first splicing plate and the second splicing plate along the first direction;

[0011] The positive pressure chamber is formed between the first splicing plate and the second splicing plate; the first splicing plate, the second splicing plate and the bottom plate form the blowing chamber; the cover shell, the first splicing plate and the second splicing plate form the negative pressure chamber.

[0012] In one embodiment, the bottom plate is provided with a groove communicating with the air blowing channel, and the second opening of the groove faces the main body;

[0013] The groove wall of the groove and the surface of the main body facing the groove form an ultrasonic generating cavity.

[0014] In one embodiment, the main body has a first step portion at one end in the first direction, and the base plate has a second step portion at one end facing the main body in the first direction, and the first step portion and the second step portion are matched in concave and convex manner to position the main body and the base plate.

[0015] In one embodiment, the cover shell includes a cover portion and a connecting portion, wherein the cover portion is provided outside the main body, the connecting portion is provided at one end of the cover portion close to the bottom plate and connected to the inner wall thereof, and extends close to the main body along the third direction, and the connecting portion is connected to the bottom plate;

[0016] The cover shell, the bottom plate and the main body form the negative pressure chamber.

[0017] In one embodiment, two groups of air inlet groups are provided on the bottom plate, and the two groups of air inlet groups are respectively located on both sides of the blowing flow channel along the third direction, and each group of the air inlet groups includes at least one air inlet arranged along the second direction;

[0018] The negative pressure chamber includes two sub-chambers, which are respectively located on both sides of the positive pressure chamber along the third direction, and the two sub-chambers are respectively communicated with the air inlets of the two groups of air inlet groups.

[0019] In one embodiment, the positive pressure chamber further includes a merging chamber, which is located at an end of the sub-chamber away from the air inlet along the first direction, and both of the sub-chambers are connected to the merging chamber.

[0020] In one embodiment, the ultrasonic dust removal device further includes two end plates, and the two end plates are respectively located at two ends of the main body along the second direction;

[0021] The two end plates and the main body define the positive pressure chamber, the main body, the bottom plate and the two end plates form the blowing chamber, and the main body, the bottom plate, the cover shell and the two end plates form the negative pressure chamber.

[0022] In one embodiment, the ultrasonic dust removal device further includes a first joint and a second joint, and the first joint and the second joint are both mounted on the end plate;

[0023] The first connector is in communication with the positive pressure chamber, and the second connector is in communication with the negative pressure chamber.

[0024] In one embodiment, the first cross-section of the wall of the positive pressure chamber is arc-shaped, and the dimension of the first cross-section of the positive pressure chamber in the third direction gradually decreases from one end away from the blowing chamber to the other end close to the blowing chamber;

[0025] The cavity wall of the positive pressure cavity is concave to form a groove extending along the second direction, and the first direction and the third direction are both parallel to the first cross section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A front view of an ultrasonic dust removal device provided in one embodiment of the present application;

[0027] Figure 2 for Figure 1 A bottom view of the ultrasonic dust removal device shown in ;

[0028] Figure 3 for Figure 2 A cross-sectional view of the ultrasonic dust removal device taken along plane AA shown in FIG.

[0029] Figure 4 for Figure 1 A side view of the ultrasonic dust removal device shown in FIG.

[0030] Description of reference numerals:

[0031] 100. Ultrasonic dust removal device; 10. Main body; 11. First splicing plate; 12. Second splicing plate; 13. First step portion; 20. Bottom plate; 21. Blowing air duct; 22. Inhalation port; 23. Groove; 24. Second step portion; 25. Inhalation port group; 30. Positive pressure chamber; 40. Blowing chamber; 41. Ultrasonic generating chamber; 50. Cover; 51. Cover portion; 52. Connecting portion; 60. End plate; 70. Negative pressure chamber; 71. Sub-chamber; 72. Converging chamber; 80. First joint; 90. Second joint; 110. Groove. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] See Figure 1-Figure 3 In one embodiment of the present application, an ultrasonic dust removal device 100 is provided for generating ultrasonic waves to remove dust from an object to be cleaned. Optionally, the object to be cleaned is a pole piece. Of course, in other embodiments, the type of the object to be cleaned is not limited.

[0039] The ultrasonic dust removal device 100 includes a main body 10 and a base plate 20. The base plate 20 and the main body 10 are spliced ​​along a first direction, a positive pressure chamber 30 is formed in the main body 10, and the base plate 20 and the main body 10 form a blowing chamber 40. The positive pressure chamber 30 and the blowing chamber 40 both extend longitudinally along the second direction. The blowing chamber 40 includes at least two ultrasonic generating chambers 41 that expand outward along a third direction along the first direction. That is, the blowing chamber 40 has an expanded portion (or swollen portion) that expands outward along the third direction. Each expanded portion forms an ultrasonic generating chamber 41, and each ultrasonic generating chamber 41 is arranged in series along the first direction. A blowing flow channel 21 connected to the ultrasonic generating chamber 41 is formed on the base plate 20. The blowing flow channel 21 extends longitudinally along the second direction and is used to blow air to the outside.

[0040] The first direction, the second direction and the third direction intersect each other. Specifically, the first direction, the second direction and the third direction are perpendicular to each other. In a specific embodiment, the ultrasonic dust removal device 100 is a rectangular parallelepiped structure, the first direction is the height direction of the ultrasonic dust removal device 100, the second direction is its length direction, and the third direction is its width direction. The first direction is 1 and Figure 3 The middle Z direction, the second direction is Figure 1 and Figure 2 The middle X direction, the third direction is Figure 2 and Figure 3 Center Y direction.

[0041] Of course, in some other implementations, the shape of the ultrasonic dust removal device 100 is not limited, and the specific directions of the first direction, the second direction and the third direction are also not limited.

[0042] With the above arrangement, the high-pressure gas in the positive pressure chamber 30 can flow through each ultrasonic generating chamber 41 in sequence, and finally flow to the outside through the blowing flow channel 21. When the high-speed fluid passes through the positive pressure chamber 30, the self-excited oscillation of the fluid generates acoustic wave energy, and a shedding vortex-acoustic wave-new shedding vortex-new acoustic wave phenomenon is generated in the flow field of the positive pressure chamber 30. Furthermore, by connecting a plurality of ultrasonic generating chambers 41 in series, an acoustic flow resonance phenomenon (i.e., a standing wave mode) will occur, thereby generating high-frequency noise and gas, the frequency of which can reach above 20kHz, which can be evaluated as ultrasonic waves. Finally, the gas is blown out through the blowing flow channel 21. When the gas is blown out of the blowing flow channel 21, the high-frequency vibrating gas will continue to vibrate and vortex on the end face of the ultrasonic dust removal device 100 in the first direction, thereby acting on the part to be cleaned. The dust on the part to be cleaned is subjected to external force to generate movement, thereby separating from the surface of the part to be cleaned to achieve the purpose of dust removal.

[0043] The ultrasonic dust removal device 100 also includes a housing 50 having a first opening at one end thereof in a first direction and a closed end thereof in the first direction. The housing 50 is disposed outside the main body 10, and the base plate 20 is connected to the end of the housing 50 having the first opening and seals the first opening. The base plate 20 is provided with an air intake 22, and the housing 50 and the main body 10 form a negative pressure chamber 70 connected to the air intake 22. In this manner, when the air blowing channel 21 blows air toward the object to be cleaned, dust can be drawn into the negative pressure chamber 70 through the air intake 22, thereby achieving the purpose of dust removal.

[0044] The ultrasonic dust removal device 100 provided in the embodiment of the present application has multiple ultrasonic generating chambers 41 arranged in series, which is conducive to the generation of ultrasonic waves. The ultrasonic waves are blown toward the parts to be cleaned through the blowing air channel 21, so as to achieve a better dust removal effect. At the same time, since the blowing air channel 21 is directly formed on the bottom plate 20, the blowing air channel 21 is formed by splicing each other, thereby ensuring the dimensional stability of the blowing air channel 21. In addition, the cover 50 is arranged outside the main body 10, and the cover 50 and the main body 10 form a negative pressure chamber 70, which can avoid the use of a complex structure to form the negative pressure chamber 70 and simplify the structure of the ultrasonic dust removal device 100.

[0045] See Figure 1 、 Figure 2 and Figure 4 The ultrasonic dust removal device 100 further includes two end plates 60, which are located at both ends of the main body 10 along the second direction. The two end plates 60 and the main body 10 define a positive pressure chamber 30, the main body 10, the bottom plate 20, and the two end plates 60 form an air blowing chamber 40, and the main body 10, the bottom plate 20, the cover 50, and the two end plates 60 form a negative pressure chamber 70. As part of the formation of the positive pressure chamber 30, the air blowing chamber 40, and the negative pressure chamber 70, the end plates 60 can cooperate with the end plates 60 to form the positive pressure chamber 30, the air blowing chamber 40, and the negative pressure chamber 70 when the structures of the main body 10 and the cover 50 are relatively simple, thereby simplifying the structural arrangement of the main body 10 and the cover 50. It can be understood that in some other embodiments, the end plate 60 can be omitted. In this case, the main body 10 itself can form a positive pressure chamber 30, the main body 10 and the bottom plate 20 can form an air blowing chamber 40, the main body 10, the cover shell 50 and the bottom plate 20 can form a negative pressure chamber 70, or the cover shell 50 and the main body 10 can form a negative pressure chamber 70.

[0046] Continue reading Figure 3The main body 10 includes a first splicing plate 11 and a second splicing plate 12. The first splicing plate 11 and the second splicing plate 12 are spliced ​​along the third direction. The bottom plate 20 is spliced ​​with both the first splicing plate 11 and the second splicing plate 12 along the first direction. A positive pressure chamber 30 is formed between the first splicing plate 11 and the second splicing plate 12. The first splicing plate 11, the second splicing plate 12 and the bottom plate 20 form a blowing chamber 40. Compared with the method of directly opening a cavity on the main body 10 to form the positive pressure chamber 30 and the blowing chamber 40, the method of splicing the first splicing plate 11 and the second splicing plate 12 to form the positive pressure chamber 30 and the blowing chamber 40 simplifies the molding process. At the same time, the main body 10 is spliced ​​by multiple structures, which is convenient for disassembly and reduces maintenance costs.

[0047] In some embodiments, see Figure 3 The bottom plate 20 is provided with a groove 23 that is in communication with the air blowing channel 21. The second opening of the groove 23 faces the main body 10. The groove wall of the groove 23 and the surface of the main body 10 facing the groove 23 form an ultrasonic generating cavity 41. Specifically, the groove wall of the groove 23 and the surfaces of the first splicing plate 11 and the second splicing plate 12 facing the groove 23 form an ultrasonic generating cavity 41. In this way, the ultrasonic generating cavity 41 located most downstream in the airflow direction is directly formed by the groove wall of the groove 23 and the outer surface of the main body 10. Even if there is an assembly error, the size of the ultrasonic generating cavity 41 will not change, thereby ensuring the dimensional stability of the ultrasonic generating cavity 41, thereby ensuring the effect of generating ultrasonic waves and improving the dust removal performance.

[0048] Of course, in some other embodiments, the most downstream ultrasonic generating cavity 41 may also be formed by splicing, which is not limited here.

[0049] In some embodiments, the main body 10 has a first step 13, and the base plate 20 has a second step 24. The first step 13 is located at one end of the main body 10 facing the base plate 20 along the first direction, and the second step 24 is located at one end of the base plate 20 facing the main body 10 along the first direction. The first step 13 and the second step 24 mate with each other in a concave-convex manner to position the main body 10 and the base plate 20. Thus, the cooperation between the first step 13 and the second step 24 ensures accurate positioning of the main body 10 and the base plate 20, ensuring assembly precision.

[0050] In some embodiments, the cover 50 includes a cover portion 51 and a connecting portion 52. The cover portion 51 is disposed outside the main body 10, and the connecting portion 52 is disposed at one end of the cover portion 51 near the base plate 20 and connected to the inner wall of the cover portion 51. The connecting portion 52 extends toward the main body 10 along a third direction relative to the cover portion 51 and is connected to the base plate 20. The cover 50, the base plate 20, and the main body 10 form a negative pressure chamber 70. This configuration of the cover 50 not only facilitates cooperation with the main body 10 to form the negative pressure chamber 70, but also facilitates connection to the base plate 20, simplifying the assembly process.

[0051] Optionally, the bottom plate 20 is connected to the connecting portion 52 and the splicing plate by screws. Similarly, the end plate 60 is connected to the splicing plate and the cover 50 by screws.

[0052] In some embodiments, see Figure 2 Two groups of air inlet groups 25 are provided on the bottom plate 20. These groups are located on either side of the airflow channel 21 along the third direction. Each group of air inlet groups 25 includes at least one air inlet 22 arranged along the second direction. The negative pressure chamber 70 includes two sub-cavities 71, which are located on either side of the positive pressure chamber 30 along the third direction. The two sub-cavities 71 are connected to the air inlet 22 of the two groups of air inlet groups 25. Thus, the ultrasonic dust removal device 100 adopts a sub-cavity 71-positive pressure chamber 30-sub-cavity 71 design, thereby completing the target action of dust collection-ultrasonic vibration-dust collection, ensuring effective dust removal.

[0053] Because the blowing duct 21 extends longitudinally along the second direction, to ensure effective dust removal, air inlets 22 are provided at multiple locations along the extension direction of the blowing duct 21. In some embodiments, each air inlet group 25 includes four air inlets 22, and the four air inlets 22 are spaced apart. In other embodiments, the number of air inlets 22 included in each air inlet group 25 is not limited.

[0054] Continue reading Figure 3 The positive pressure chamber 30 further includes a merging chamber 72, which is located at the end of the sub-chamber 71 away from the air inlet 22 along the first direction. Both sub-chambers 71 are connected to the merging chamber 72. In this way, when dust is sucked into the sub-chamber 71, it can reach the merging chamber 72 from the sub-chamber 71 and be discharged from the merging chamber 72.

[0055] In some embodiments, see Figure 1 、 Figure 2 and Figure 4 The ultrasonic dust removal device 100 further includes a first joint 80 and a second joint 90, and the first joint 80 and the second joint 90 are both connected to the end plate 60. The first joint 80 is connected to the positive pressure chamber 30, so that the high-pressure gas enters the positive pressure chamber 30. The second joint 90 is connected to the negative pressure chamber 70, so that the gas in the negative pressure chamber 70 can be discharged to the outside. Of course, in some other embodiments, the ultrasonic dust removal device 100 can also omit the joint. In this case, the high-pressure gas enters the positive pressure chamber 30 through the air inlet, and the gas in the negative pressure chamber 70 can be discharged to the outside through the air outlet.

[0056] In some embodiments, see Figure 3, the first cross-sectional shape of the cavity wall of the positive pressure cavity 30 is an arc shape, and the size of the positive pressure cavity 30 in the third direction gradually decreases from the end away from the blowing cavity 40 to the end close to the blowing cavity 40. Among them, the first direction and the third direction are both parallel to the first cross-section. The cavity wall of the positive pressure cavity 30 is concave to form a groove 110 extending along the second direction. When gas (such as compressed air) is filled into the positive pressure cavity 30, the volume and density of the gas in the positive pressure cavity 30 will continue to increase, so the gas will exert pressure on the cavity wall of the positive pressure cavity 30, causing the cavity wall of the positive pressure cavity 30 to have a tendency to expand outward, thereby increasing the load on the structure forming the positive pressure cavity 30, resulting in reduced reliability of the device.

[0057] When the first cross-section of the positive-pressure chamber 30 is designed as an arc (i.e., the wall of the positive-pressure chamber 30 is a curved surface) and grooves 110 are provided in the wall, the gas pressure is dispersed, thereby optimizing the load on the splicing plate, reducing the load on the screws securing the base plate 20 to the splicing plate, and improving structural reliability. Furthermore, the curved wall of the positive-pressure chamber 30 reduces air pressure loss to a certain extent compared to a rectangular chamber, thereby conserving fluid flow and reducing plant load.

[0058] Two grooves 110 are provided in the positive pressure chamber 30. The grooves 110 are disposed on the first splicing plate 11 and the second splicing plate 12, respectively, and face each other in the third direction. It is contemplated that in other embodiments, the number and specific locations of the grooves 110 are not limited. For example, the number of grooves 110 may be one, three, or more than three.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An ultrasonic dust removal device, characterized in that: include: A main body (10) and a bottom plate (20) are spliced ​​along a first direction, a positive pressure chamber (30) is formed in the main body (10), and the bottom plate (20) and the main body (10) form a blowing chamber (40); the positive pressure chamber (30) and the blowing chamber (40) both extend longitudinally along a second direction, the blowing chamber (40) includes at least two ultrasonic generating chambers (41) that expand outwardly along a third direction along the first direction, and a blowing flow channel (21) is formed on the bottom plate (20) and is connected to the ultrasonic generating chamber (41) and extends longitudinally along the second direction; A cover (50) having a first opening at one end in the first direction and a closed end at the other end; the cover (50) is arranged outside the main body (10); the bottom plate (20) is connected to the cover (50) and closes the first opening; an air inlet (22) is provided on the bottom plate (20); the cover (50) and the main body (10) form a negative pressure chamber (70) in communication with the air inlet (22); The first direction, the second direction, and the third direction intersect with each other.

2. The ultrasonic dust removal device according to claim 1, characterized in that: The main body (10) comprises a first splicing plate (11) and a second splicing plate (12), the first splicing plate (11) and the second splicing plate (12) are spliced ​​along the third direction, and the bottom plate (20) is spliced ​​along the first direction with both the first splicing plate (11) and the second splicing plate (12); The positive pressure chamber (30) is formed between the first splicing plate (11) and the second splicing plate (12); the first splicing plate (11), the second splicing plate (12) and the bottom plate (20) form the blowing chamber (40); and the cover shell (50), the first splicing plate (11) and the second splicing plate (12) form the negative pressure chamber (70).

3. The ultrasonic dust removal device according to claim 1, characterized in that: The bottom plate (20) is provided with a groove (23) communicating with the air blowing channel (21), and a second opening of the groove (23) faces the main body (10); The groove wall of the groove (23) and the surface of the main body (10) facing the groove (23) form an ultrasonic generating cavity (41).

4. The ultrasonic dust removal device according to claim 1, characterized in that: The main body (10) has a first step portion (13) at one end facing the bottom plate (20) in the first direction, and the bottom plate (20) has a second step portion (24) at one end facing the main body (10) in the first direction. The first step portion (13) and the second step portion (24) are matched in a concave-convex manner to position the main body (10) and the bottom plate (20).

5. The ultrasonic dust removal device according to claim 1, characterized in that: The cover shell (50) comprises a cover portion (51) and a connecting portion (52), wherein the cover portion (51) is covered outside the main body (10), and the connecting portion (52) is provided at one end of the cover portion (51) close to the bottom plate (20) and connected to the inner wall thereof, and extends along the third direction close to the main body (10), and the connecting portion (52) is connected to the bottom plate (20); The cover shell (50), the bottom plate (20) and the main body (10) form the negative pressure chamber (70).

6. The ultrasonic dust removal device according to claim 1, characterized in that: Two groups of air inlet groups (25) are provided on the bottom plate (20), and the two groups of air inlet groups (25) are respectively located on both sides of the blowing flow channel (21) along the third direction, and each group of the air inlet groups (25) includes at least one air inlet (22) arranged along the second direction; The negative pressure chamber (70) comprises two sub-chambers (71), the two sub-chambers (71) being respectively located on both sides of the positive pressure chamber (30) along the third direction, and the two sub-chambers (71) being respectively connected to the air inlets (22) of the two groups of air inlet groups (25).

7. The ultrasonic dust removal device according to claim 6, characterized in that: The positive pressure chamber (30) further comprises a merging chamber (72), wherein the merging chamber (72) is located at one end of the sub-chamber (71) away from the air inlet (22) along the first direction, and both sub-chambers (71) are in communication with the merging chamber (72).

8. The ultrasonic dust removal device according to claim 1, characterized in that: The ultrasonic dust removal device further comprises two end plates (60), the two end plates (60) being respectively located at two ends of the main body (10) along the second direction; The two end plates (60) and the main body (10) define the positive pressure chamber (30), the main body (10), the bottom plate (20) and the two end plates (60) form the blowing chamber (40), and the main body (10), the bottom plate (20), the cover (50) and the two end plates (60) form the negative pressure chamber (70).

9. The ultrasonic dust removal device according to claim 8, characterized in that: The ultrasonic dust removal device further comprises a first joint (80) and a second joint (90), wherein the first joint (80) and the second joint (90) are both mounted on the end plate (60); The first connector (80) is in communication with the positive pressure chamber (30), and the second connector (90) is in communication with the negative pressure chamber (70).

10. The ultrasonic dust removal device according to claim 1, characterized in that: The first cross-sectional shape of the cavity wall of the positive pressure cavity (30) is an arc shape, and the dimension of the first cross-sectional shape of the positive pressure cavity (30) in the third direction gradually decreases from one end away from the blowing cavity (40) to the other end close to the blowing cavity (40); The cavity wall of the positive pressure cavity (30) is concave to form a groove (110) extending along the second direction, and the first direction and the third direction are both parallel to the first cross section.

Images