Dust removal device and conveying apparatus

Abstract

This application provides a dust removal device and a conveying equipment, belonging to the field of dust removal. The dust removal device includes a conveying roller and an air supply mechanism. The conveying roller includes a roller body, a rotating shaft, and a first partition. The roller body is used to convey the strip material. The outer circumferential surface of the roller body has multiple first air outlets. The roller body has a cavity. The rotating shaft is located in the cavity and connected to the roller body to drive the outer circumferential surface of the roller body to rotate. The first partition is disposed in the cavity to define a first chamber within the cavity. The first partition is configured to slide along the rotating shaft to adjust the volume of the first chamber. The first chamber communicates with the multiple first air outlets. The air supply mechanism is used to supply gas to the first chamber so that the gas is blown onto the strip material through the multiple first air outlets. The dust removal device provided in this application can improve the dust removal efficiency of the strip material.

Description

Technical Field

[0001] This application relates to the field of dust removal technology, and in particular to a dust removal device and a transmission equipment. Background Technology

[0002] The production process of strip material involves winding, conveying, and cutting. Dust inevitably adheres to the strip material during the production process. Currently, dust removal methods for strip material include air blowing and negative pressure dust removal. However, single air blowing or negative pressure adsorption methods have low dust removal efficiency for strip material. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the background art. Therefore, one object of this application is to provide a dust removal device and conveying equipment to improve the dust removal efficiency of conveyor belts.

[0004] An embodiment of the first aspect of this application provides a dust removal device, including: a conveying roller and an air supply mechanism. The conveying roller includes a roller body, a rotating shaft, and a first partition. The roller body is used to convey a strip material. The outer peripheral surface of the roller body has a plurality of first air outlets. The roller body has a cavity. The rotating shaft is located in the cavity and connected to the roller body to drive the outer peripheral surface of the roller body to rotate. The first partition is disposed in the cavity to define a first chamber in the cavity. The first partition is configured to slide along the rotating shaft to adjust the volume of the first chamber. The first chamber is in communication with the plurality of first air outlets. The air supply mechanism is used to supply gas to the first chamber so that the gas is blown toward the strip material through the plurality of first air outlets.

[0005] In the technical solution of this application embodiment, the conveying roller can remove dust from the strip material through the first air outlet while conveying the strip material. This eliminates the need for a separate dust removal procedure for the strip material, saving time and improving efficiency. The volume of the first chamber is adjustable, reducing compressed air waste. Furthermore, the air pressure in the first chamber can be adjusted by regulating its volume, thereby regulating the rate of airflow blown out through the air outlet and improving the dust removal efficiency of the strip material.

[0006] In some embodiments, the first partition is a baffle with a through hole, through which a rotating shaft passes, allowing the first partition to slide along the rotating shaft. Providing a through hole in the baffle to enable the first partition to slide along the rotating shaft results in a simple and reliable structure.

[0007] In some embodiments, both the roller and the cavity extend along a first direction. An air inlet is provided at one end of the roller along the first direction. An air supply mechanism is used to supply gas to the first cavity through the air inlet. The conveying roller further includes an airflow distribution structure disposed within the cavity. The airflow distribution structure is configured to guide the gas supplied to the first cavity along the first direction. The airflow distribution structure guides the gas supplied to the first cavity along the first direction, resulting in a uniform gas distribution within the first cavity along the first direction. This makes the gas blown out by the roller in the first direction more uniform, thus providing a uniform dust removal effect on the strip transported by the roller.

[0008] In some embodiments, the airflow distribution structure includes: at least one guide body extending along a first direction, a guide cavity extending along the first direction within the guide body, one end of the guide cavity communicating with an air inlet, and a plurality of guide holes spaced apart along the first direction on the outer peripheral surface of the guide body, the guide holes communicating with the guide cavity and corresponding to the first chamber. The guide body includes a guide cavity communicating with the air inlet, allowing the gas delivery mechanism to directly deliver gas to the guide cavity and then out through the guide holes. This ensures that the gas entering the first chamber achieves a uniform distribution of velocity and pressure in advance, improving the guiding effect on the gas entering the first chamber and, to a certain extent, avoiding problems such as excessive local airflow causing strip deformation or insufficient local airflow causing incomplete dust removal.

[0009] In some embodiments, the first partition is configured to slide simultaneously along both the rotation axis and the flow guide body to adjust the volume of the first chamber. Utilizing the existing flow guide body and rotation axis together as a guiding structure improves the sliding reliability of the first partition.

[0010] In some embodiments, the roller body includes: a first roller body and a second roller body. The first roller body has a cavity, and a second air outlet communicating with the cavity is provided on the wall of the first roller body. The second air outlet is strip-shaped and located on one side of the first roller body. The second roller body is sleeved on the outer periphery of the first roller body, and a first gap exists between the first roller body and the second roller body. A plurality of first air outlets are arranged around the outer peripheral surface of the second roller body, and both the first air outlet and the second air outlet communicate with the first gap. The conveying roller also includes: a rotating shaft, which passes through the cavity and is connected to the second roller body to drive the second roller body to rotate relative to the first roller body. As the second roller body rotates, the second air outlet can overlap with different first air outlets on the outer peripheral surface of the second roller body, so that the gas blown out by the second air outlet can be blown out through the first air outlet. The second air outlet is located on one side of the first roller body, forming a strip-shaped side air outlet. This increases the velocity of the airflow blown out from the second air outlet, resulting in a larger velocity of the gas blown out from the first air outlet, which can improve the dust removal efficiency of the strip material.

[0011] In some embodiments, the conveying roller further includes a mounting frame and a bearing, with the first roller body fixedly connected to the mounting frame; the bearing connects the inner wall of the first roller body to the outer periphery of the rotating shaft. By providing the mounting frame and bearing, the first roller body is fixed in place, while the second roller body rotates relative to the first roller body, resulting in a simple and reliable structure.

[0012] In some embodiments, the conveying roller further includes a sealing structure disposed within the first gap. Positioning the sealing structure within the first gap improves the sealing performance of the first gap, reducing the probability of gas escaping from the first gap. This results in a larger gas velocity and flow rate blowing from the first outlet, which is beneficial for improving dust removal efficiency.

[0013] In some embodiments, the dust removal device further includes a negative pressure mechanism, which has a negative pressure chamber and an adsorption port communicating with the negative pressure chamber. The negative pressure mechanism is located downstream of the conveyor roller and is configured to adsorb gas from the surface of the strip after it has been conveyed by the conveyor roller. By positioning the negative pressure mechanism downstream of the conveyor roller, dust blown off the surface of the strip can be collected, achieving efficient dust removal and closed-loop dust recycling of the strip surface.

[0014] In some embodiments, an adjusting member is provided within the negative pressure chamber to define a second chamber with an adjustable volume, the second chamber being connected to the adsorption port. The volume of the second chamber is the effective volume of the negative pressure chamber. The adjusting member can change the negative pressure and airflow buffering capacity of the negative pressure chamber by adjusting the effective volume of the negative pressure chamber, adapting to different dust removal needs.

[0015] In some embodiments, the adjusting member includes a second partition and a guide structure. The second partition is located within the negative pressure chamber to divide the negative pressure chamber into two chambers arranged axially, one of which serves as the second chamber. The guide structure is located within the negative pressure chamber and extends axially along the negative pressure chamber. The guide structure is configured to cooperate with the second partition so that the second partition moves axially along the negative pressure chamber, thereby adjusting the volume of the second chamber. Using the second partition and guide structure to adjust the volume of the second chamber results in a simple and compact structure, convenient assembly, smooth and reliable sliding motion, continuous volume adjustment, and high adjustment accuracy.

[0016] In some embodiments, the second partition is a bellows; a guide structure is connected to the bellows and is configured to be axially expandable and contractible along the negative pressure chamber, thereby driving the bellows to expand and contract axially along the negative pressure chamber, and thus adjusting the volume of the second chamber. Using a bellows to adjust the volume of the second chamber allows for direct change of the volume by utilizing the axial expansion and contraction deformation of the bellows itself. The expansion and contraction process is smooth with low resistance, and the overall structure has no sliding friction parts, resulting in a simple and compact structure that enables a wide range of volume adjustments within a small installation space.

[0017] In some embodiments, the second chamber is configured corresponding to the first chamber. The strip can be transported in the area where the first chamber is located, and the second chamber is configured corresponding to the first chamber, so that the negative pressure mechanism can accurately and promptly adsorb dust on the surface of the strip, which helps to prevent secondary dust re-entrainment and achieve centralized collection.

[0018] An embodiment of the second aspect of this application provides a transmission device for transmitting strip material, the transmission device including the dust removal device in the above embodiments.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the conveyor rollers according to some embodiments of this application;

[0022] Figure 2 This is a cross-sectional view of the roller body along the axial direction of some embodiments of this application;

[0023] Figure 3 This is a front view of the airflow distribution structure of some embodiments of this application;

[0024] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0025] Figure 5 This is a cross-sectional view of the roller body in some other embodiments of this application, perpendicular to the axial direction;

[0026] Figure 6 This is a perspective view of the cooperation between the conveyor roller and the negative pressure mechanism in some embodiments of this application;

[0027] Figure 7 This is a top view showing the cooperation between the conveyor roller and the negative pressure mechanism in some embodiments of this application;

[0028] Figure 8 This is a schematic diagram showing the adjustment element located in the negative pressure chamber in some embodiments of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] Roller body 101, first roller body 101a, second roller body 101b, first gap 101c, first separator 102a, airflow distribution structure 103, flow guiding body 103a, rotating shaft 104, driving mechanism 105, mounting bracket 106, negative pressure mechanism 107, adjusting component 108, second separator 108a, guide structure 108b;

[0031] First section 1, second section 2, strip 10, first air outlet 21, second air outlet 22, first chamber 31, second chamber 32, guide chamber 41, guide hole 42, exhaust pipe 50;

[0032] First direction X. Detailed Implementation

[0033] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0038] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0039] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0040] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0041] The production process of battery strip involves winding, conveying, and cutting, inevitably resulting in dust adhering to the strip. For example, in battery manufacturing, processes such as rolling, slitting, and die-cutting of battery electrodes generate dust, which easily adheres to the electrodes and can enter the battery's interior. If this dust punctures the separator under high pressure, it can cause a short circuit and potentially lead to a fire. Furthermore, the presence of dust increases the voltage drop, degrading battery performance.

[0042] Therefore, dust removal is required for the strip to remove dust from its surface.

[0043] In related technologies, methods such as air blowing and negative pressure dust removal are used to remove dust from the strip material. Air blowing involves blowing air onto the strip material to remove dust from its surface. However, current air blowing dust removal devices cannot adjust the blowing speed according to different dust removal needs, often resulting in insufficient blowing speed and low dust removal efficiency for the strip material.

[0044] Based on the above considerations, a dust removal device is designed, including: a conveying roller and an air supply mechanism. The conveying roller includes a roller body, a rotating shaft, and a first partition. The roller body is used to convey the strip material. The outer circumferential surface of the roller body has multiple first air outlets. The roller body has a cavity. The rotating shaft is located in the cavity and connected to the roller body to drive the outer circumferential surface of the roller body to rotate. The first partition is disposed in the cavity to define a first chamber within the cavity. The first partition is configured to slide along the rotating shaft to adjust the volume of the first chamber. The first chamber is connected to multiple first air outlets. The air supply mechanism is used to supply gas to the first chamber so that the gas is blown toward the strip material through the multiple first air outlets.

[0045] The conveyor rollers can remove dust from the strip through the first air outlet while conveying the strip, thus eliminating the need for a separate dust removal process, saving time and improving efficiency. The volume of the first chamber is adjustable, reducing compressed air waste, and the air pressure in the first chamber can be adjusted by regulating the volume, thereby regulating the airflow rate through the outlet and improving the dust removal efficiency of the strip.

[0046] The dust removal device disclosed in this application can be used, but is not limited to, in battery production. The batteries produced can be used in electrical devices such as vehicles, ships, or aircraft. The power system of such electrical devices can be composed of batteries produced after being treated by the dust removal device disclosed in this application, which helps to improve battery quality, stability, and lifespan.

[0047] Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0048] This application also provides an energy storage device that uses a battery as a power source. The energy storage device can be, but is not limited to, an energy storage container, an energy storage cabinet, an energy storage power station, an energy storage battery pack, or a portable energy storage system.

[0049] In a battery, there can be multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells are connected in both series and parallel configurations. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these battery cells is housed within a casing. Alternatively, a battery can consist of multiple battery cells first connected in series, parallel, or a combination thereof to form a battery module, and then these modules are connected in series, parallel, or a combination thereof to form a whole, which is also housed within a casing. The battery can also include other structures; for example, it can include a busbar component for electrical connection between the multiple battery cells.

[0050] Each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0051] A battery cell is the smallest unit that makes up a battery. A battery cell includes electrode components.

[0052] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. The casing may contain one or more electrode assemblies. Electrode assemblies are mainly formed by winding or stacking electrode sheets, including positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions without active material each constitute a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0053] This application provides a dust removal device, including: a conveying roller and an air supply mechanism. The conveying roller includes a roller body, a rotating shaft, and a first partition. The roller body is used to convey a strip material. The outer peripheral surface of the roller body has a plurality of first air outlets. The roller body has a cavity. The rotating shaft is located in the cavity and connected to the roller body to drive the outer peripheral surface of the roller body to rotate. The first partition is disposed in the cavity to define a first chamber in the cavity. The first partition is configured to slide along the rotating shaft to adjust the volume of the first chamber. The first chamber is connected to the plurality of first air outlets. The air supply mechanism is used to supply gas to the first chamber so that the gas is blown toward the strip material through the plurality of first air outlets.

[0054] In some embodiments, the conveyor roller can be a conveyor roller in a conveying device, which is itself used to convey the strip material. While conveying the strip material, it also removes dust, thus integrating strip material conveying and dust removal functions into one unit, simplifying the production line layout and reducing the risk of strip material damage between processes. For example, the strip material can be an electrode sheet, and the conveyor roller can be used in the battery winding process.

[0055] like Figure 1 As shown, the roller 101 can extend along the first direction X, and the outer peripheral surface of the roller 101 forms a conveying surface that directly contacts the strip 10. The outer peripheral surface of the roller 101 can rotate, thereby driving the strip 10 to be conveyed smoothly during rotation. In some embodiments, the strip 10 may include, but is not limited to, metal strip, polymer strip, composite strip, etc. For example, in the field of batteries, the strip 10 may be an electrode, separator, etc.

[0056] An air supply mechanism (not shown) supplies gas to the first chamber to create a positive pressure in the first chamber. When the strip 10 passes the outer peripheral surface of the roller 101, the gas in the first chamber is blown toward the strip 10 from a plurality of first air outlets 21 to blow away the dust on the surface of the strip 10.

[0057] In some embodiments, a plurality of first air outlets 21 may be arranged around the outer peripheral surface of the roller body 101.

[0058] In other embodiments, a plurality of first air outlets 21 may also be provided on one side of the roller body 101.

[0059] In some embodiments, the shape of the first air outlet 21 may include, but is not limited to, a circle, a square, a rectangle, etc.

[0060] In some embodiments, the maximum diameter of the first air outlet 21 may be less than or equal to 1 mm.

[0061] In some embodiments, a plurality of first air outlets 21 can be arranged in an array, wherein the plurality of first air outlets 21 can be arranged along the extending direction of the roller body 101 and around the outer peripheral surface of the roller body 101. Figure 2 As shown, the roller body 101 can be a single-layer structure, meaning that the first air outlet 21 is directly connected to the first chamber 31. The first air outlets 21 can be arranged along the axial direction of the cavity. Since the first chamber 31 only occupies a portion of the cavity's volume, only some of the multiple first air outlets 21 are directly connected to the first chamber 31. It can be understood that the first chamber 31 is a positive pressure chamber, and gas flows from the first chamber 31 to the first air outlets 21 for outlet discharge. Therefore, the first air outlets 21 not connected to the first chamber 31 do not discharge air or have a small discharge volume. When the volume of the first chamber 31 increases, the width of the first chamber 31 increases, allowing more first air outlets 21 to connect to the first chamber 31, thus enabling more first air outlets 21 to discharge air. When the volume of the first chamber 31 decreases, the width of the first chamber 31 decreases, reducing the number of first air outlets 21 connected to the first chamber 31, thereby reducing the number of first air outlets 21 capable of discharging air. The outer peripheral surface of the roller 101 corresponding to the first chamber 31 can be used to contact the strip 10 for conveying the strip 10. In this way, the volume of the first chamber 31 can be adjusted based on the width of the strip 10, thereby adjusting the width of the first chamber 31 so that the first air outlet 21 can be used to discharge air in the width direction of the strip 10, reducing the waste of compressed air.

[0062] In other embodiments, all first air outlets 21 may also be connected to the first chamber 31, that is, regardless of the width of the first chamber 31, multiple first air outlets 21 are connected to the first chamber 31. In this case, any position on the outer circumferential surface of the roller 101 can be used for contact with the strip 10 to transport the strip 10. The volume of the first chamber 31 can be adjusted based on the width of the strip 10. By adjusting the volume of the first chamber 31, the air pressure inside the first chamber 31 can be adjusted, thereby adjusting the airflow rate from the first air outlets 21 and improving dust removal from the strip 10.

[0063] In some embodiments, the delivery mechanism may include, but is not limited to, a fan, blower, centrifugal fan, axial fan, air pump, air compressor, compressed air source, fan assembly, or air pump body.

[0064] The rotating shaft 104 can penetrate the cavity along the first direction X. In some embodiments, the rotating shaft 104 can be driven by the drive mechanism 105 to rotate around its own axis, thereby causing the outer peripheral surface of the roller 101 to rotate synchronously.

[0065] In some embodiments, the drive mechanism 105 may include, but is not limited to, one of an electric motor, a rotary cylinder, or a gear transmission mechanism.

[0066] In some embodiments, the drive mechanism 105 may be located at one end of the roller body 101 to connect to one end of the rotating shaft 104. Exemplarily, the drive mechanism 105 may be located at the end of the roller body 101 that has an air inlet.

[0067] In some embodiments, the conveying roller further includes a mounting frame, which may be disposed at both ends of the roller body 101, and the first separator 102a and the roller may be connected to the mounting frame for fixation.

[0068] In some embodiments, the first partition 102a may include, but is not limited to, a baffle, a piston, a bellows, or a diaphragm. The first partition 102a slides along the rotation axis, thus eliminating the need for an additional guide structure to cooperate with the first partition 102a, saving volume and reducing the volume occupied by the cavity. This allows the first chamber formed within the cavity to store a larger volume of air, which is beneficial for improving the dust removal effect.

[0069] In some embodiments, the first separator 102a is sealed to the inner wall of the cavity formed by the roller 101.

[0070] In other embodiments, there may also be a small gap between the first separator 102a and the inner wall of the cavity formed by the roller 101, which facilitates the sliding of the first separator 102a.

[0071] In the above technical solution, the conveyor roller can remove dust from the strip 10 through the first air outlet 21 while conveying the strip 10. This eliminates the need for a separate dust removal procedure for the strip 10, saving time and improving efficiency. The volume of the first chamber 31 is adjustable, reducing compressed air waste. Furthermore, the air pressure in the first chamber 31 can be adjusted by regulating its volume, thereby regulating the speed of the airflow blown out through the air outlet and improving the dust removal efficiency of the strip 10.

[0072] like Figure 2 As shown, according to some embodiments of this application, the first partition 102a is a baffle with a through hole, and the rotating shaft passes through the through hole so that the first partition 102a can slide along the rotating shaft.

[0073] The through hole extends through the baffle along the thickness direction, and the baffle is sleeved on the outer periphery of the rotating shaft through the through hole, so that the first separator 102a can slide along the rotating shaft b.

[0074] There may be a small gap between the baffle and the inner wall of the cavity formed by the roller 101 to make the baffle easy to slide.

[0075] In the above technical solution, a through hole is provided in the baffle to enable the first separator 102a to slide along the rotation axis, which is simple and reliable.

[0076] like Figure 1 as well as Figure 2 As shown, according to some embodiments of this application, both the roller body 101 and the cavity extend along the first direction X. One end of the roller body 101 along the first direction X is provided with an air inlet. The air delivery mechanism is used to deliver gas to the first chamber 31 through the air inlet. The conveying roller also includes an airflow distribution structure 103 disposed in the cavity. The airflow distribution structure 103 is configured to guide the gas delivered to the first chamber 31 along the first direction X.

[0077] The air inlet can be connected to one end of the cavity, and the air delivery mechanism is connected to the air inlet and delivers the gas to the first chamber 31 through the air delivery port.

[0078] Understandably, since the air inlet is only located at one end of the roller body 101, it only communicates with one end of the cavity. This results in uneven airflow along the first direction X when the gas fed into the first chamber 31 is introduced, with less airflow further away from the air inlet. This leads to uneven air blowing from the roller body 101 onto the strip 10, affecting dust removal efficiency. Therefore, an airflow distribution structure 103 is provided to guide the gas delivered to the first chamber 31 along the first direction X, making the airflow in the first chamber 31 more balanced along the first direction X.

[0079] In order to guide the gas in the first chamber 31, the airflow distribution structure 103 is located at least within the first chamber 31.

[0080] In some embodiments, the airflow uniform distribution structure 103 may include, but is not limited to, a multi-layer grid, a honeycomb guide plate, or a porous flow uniform structure. For example, the multi-layer grid may include multiple mesh grids for rectifying the passing airflow, making the airflow uniform. The honeycomb guide plate may include multiple channels in a first direction X, causing the airflow passing through it to flow uniformly in the first direction X. The porous flow uniform structure has multiple guide holes, which disperse the airflow as it passes through, achieving uniformity.

[0081] In some embodiments, the airflow distribution structure 103 can be connected to a mounting bracket for fixation.

[0082] In the above technical solution, the airflow distribution structure 103 can guide the gas delivered to the first chamber 31 along the first direction X, so that the gas is evenly distributed in the first chamber 31 along the first direction X, thereby making the gas blown out by the roller 101 in the first direction X more uniform, and playing a uniform dust removal role on the strip 10 transmitted by the roller 101.

[0083] refer to Figure 3 as well as Figure 4 According to some embodiments of this application, the airflow distribution structure 103 includes: at least one flow guiding body 103a extending along a first direction X, the flow guiding body 103a having a flow guiding cavity 41 extending along the first direction X inside, one end of the flow guiding cavity 41 being connected to an air inlet, and the outer peripheral surface of the flow guiding body 103a having a plurality of flow guiding holes 42 arranged at intervals along the first direction X, the flow guiding holes 42 being connected to the flow guiding cavity 41, and the flow guiding holes 42 being provided corresponding to the first chamber 31.

[0084] For example, the flow guiding body 103a may include a first segment 1 and a second segment 2 arranged along a first direction X. A flow guiding cavity 41 passes through the first segment 1 and the second segment 2. The end of the second segment 2 facing away from the first segment 1 is connected to the air inlet. The second segment 2 is provided with a flow guiding hole 42. The first separator 102a may be correspondingly provided with the first segment 1, so that the cavity area where the second segment 2 is located can form a first chamber 31. After the gas enters the second segment 2 from the air inlet, it passes directly through the flow guiding hole 42. The gas can be dispersed and homogenized when passing through the flow guiding hole 42.

[0085] In some embodiments, the guide holes 42 can be arranged in a row, and a plurality of guide holes 42 in a row are arranged at intervals along a first direction X.

[0086] In other embodiments, the guide holes 42 may also be arranged in multiple rows, with multiple rows of guide holes 42 arranged circumferentially along the guide body 103a, and multiple guide holes 42 in each row of guide holes 42 arranged at intervals along the first direction X.

[0087] In some embodiments, the number of flow guiding bodies 103a can be one.

[0088] In other embodiments, in order to improve the guiding effect of the airflow distribution structure 103, the number of guiding bodies 103a can also be multiple, for example, two.

[0089] In the above technical solution, the guiding body 103a includes a guiding cavity 41, which is connected to the air inlet, so that the air delivery mechanism can directly deliver the gas to the guiding cavity 41 and then flow out through the guiding hole 42. In this way, the gas entering the first chamber 31 can achieve a uniform distribution of flow rate and pressure in advance, which can improve the guiding effect of the gas entering the first chamber 31 and avoid, to a certain extent, the problem of excessive local airflow causing deformation of the strip 10 or insufficient local airflow causing incomplete dust removal.

[0090] like Figure 2 As shown, according to some embodiments of this application, the first partition 102a is configured to slide simultaneously along the rotation axis 104 and the flow guide body 103a to adjust the volume of the first chamber 31.

[0091] In some embodiments, the first partition 102a is provided with a plurality of through holes, and the first partition 102a is sleeved on the outer periphery of the flow guiding body 103a through the through holes, thereby sliding relative to the flow guiding body 103a.

[0092] In some embodiments, the first separator 102a may be fitted around the outer periphery of the first segment 1 of the flow guide body 103a.

[0093] In some embodiments, the cross-sectional area of ​​the first segment 1 of the flow guide body 103a along the first direction X can be smaller than the cross-sectional area of ​​the second segment 2 along the first direction X, so that the first separator 102a can be restricted to slide only in the first segment 1.

[0094] In some embodiments, there may be two flow guiding bodies 103a, and the rotating shaft 104 may be located between the two flow guiding bodies 103a. The first separator 102a is provided with three through holes, through which the two flow guiding bodies 103a and the rotating shaft 104 pass respectively, so that the first separator 102a can slide simultaneously along the flow guiding bodies 103a of the rotating shaft 104.

[0095] In the above technical solution, the existing flow guiding body 103a and the rotating shaft 104 are used together as a guiding structure to improve the sliding reliability of the first separator 102a.

[0096] like Figure 5As shown, according to some embodiments of this application, the roller body 101 includes: a first roller body 101a and a second roller body 101b. The first roller body 101a has a cavity, and the wall of the first roller body 101a has a second air outlet 22 communicating with the cavity. The second air outlet 22 is strip-shaped and located on one side of the first roller body 101a. The second roller body 101b is sleeved on the outer periphery of the first roller body 101a. A first gap 101c is formed between the first roller body 101a and the second roller body 101b. A plurality of first air outlets 21 are arranged around the outer periphery of the second roller body 101b. Both the first air outlets 21 and the second air outlets 22 are communicating with the first gap 101c. The conveying roller also includes: a rotating shaft 104, which passes through the cavity and is connected to the second roller body 101b to drive the second roller body 101b to rotate relative to the first roller body 101a.

[0097] In other words, the roller body 101 has a double-layer structure, with the first roller body 101a located in the inner layer and the second roller body 101b located in the outer layer. The cavity is located inside the first roller body 101a, and the first air outlet 21 is located on the outer peripheral surface of the second roller body 101b. There is a first gap 101c between the first roller body 101a and the second roller body 101b, and both the first air outlet 21 and the second air outlet 22 are connected to the first gap 101c. In this way, the first air outlet 21 and the second air outlet 22 can be connected through the first gap 101c, so that the cavity is connected to the first air outlet 21.

[0098] In some embodiments, the first roller 101a and the second roller 101b may both be cylindrical.

[0099] The first roller 101a is fixed and does not rotate, while the rotating shaft 104 drives the second roller 101b to rotate, so that the second roller 101b rotates relative to the first roller 101a. Since the first roller 101a is fixed and does not rotate, the position of the second air outlet 22 is fixed, and multiple first air outlets 21 are arranged around the outer circumference of the second roller 101b. Thus, as the second roller 101b rotates, the second air outlet 22 can overlap with different first air outlets 21 on the outer circumference of the second roller 101b, so that the gas blown out by the second air outlet 22 can be blown out through the first air outlets 21. In this way, during the process of conveying the strip 10, the conveying roller can continuously blow air onto the strip 10 to blow away the dust on the surface of the strip 10.

[0100] In the above technical solution, as the second roller 101b rotates, the second air outlet 22 can overlap with different first air outlets 21 on the outer circumference of the second roller 101b. As a result, the gas blown out by the second air outlet 22 can be blown out through the first air outlet 21. The second air outlet 22 is located on one side of the first roller 101a, forming a strip-shaped side air outlet. This increases the speed of the airflow blown out from the second air outlet 22, resulting in a larger flow rate of the gas blown out from the first air outlet 21, which can improve the dust removal efficiency of the strip 10.

[0101] According to some embodiments of this application, the conveying roller further includes: a mounting frame 106 and a bearing, wherein the first roller body 101a is fixedly connected to the mounting frame 106; the bearing connects the inner wall of the first roller body 101a to the outer periphery of the rotating shaft 104.

[0102] The bearing may include an inner ring and an outer ring fitted around the outer circumference of the inner ring, the inner ring being rotatable relative to the outer ring. Exemplarily, multiple balls may be present between the inner and outer rings, the balls being configured to roll and drive the inner ring to rotate relative to the outer ring. A rotating shaft 104 is located within the cavity of a first roller body 101a. The outer ring of the bearing may be connected to the first roller body 101a, and the inner ring of the bearing is fitted around the outer circumference of the rotating shaft 104 to connect with the inner ring. One end of the rotating shaft 104 is also connected to a second roller body 101b. Thus, when the driving mechanism 105 drives the rotating shaft 104 to rotate, it causes the inner ring of the bearing to rotate relative to the outer ring, thereby enabling the second roller body 101b to rotate relative to the first roller body 101a.

[0103] In the above technical solution, by setting the mounting frame 106 and bearings, the first roller 101a is fixed and the second roller 101b rotates relative to the first roller 101a, which is simple and reliable.

[0104] According to some embodiments of this application, the conveying roller also includes a sealing structure disposed within the first gap 101c.

[0105] In some embodiments, the sealing structure may be arranged around the first gap 101c.

[0106] In some embodiments, if the first roller 101a and the second roller 101b extend along the first direction X, then the first gap 101c also extends along the first direction X, and the sealing structure can be located within a portion of the length of the first gap 101c along the first direction X. That is, along the first direction X, the size of the sealing structure is smaller than the size of the first gap 101c.

[0107] For example, the roller 101 may include a first end and a second end. The first end is provided with a drive mechanism 105 to realize the rotation of the second roller 101b, and the second end is provided with an air inlet that communicates with the cavity. The sealing structure may be provided in the area where the second end is located. In other words, the sealing structure is provided at the end of the first gap 101c near the second end to provide a certain sealing effect on one end of the first gap 101c, so that the gas entering the cavity from the air inlet will not escape too much from the first gap 101c after flowing to the first gap 101c through the second air outlet 22, thus preventing the blown airflow speed from being too low.

[0108] In some embodiments, the sealing structure may be a rotary sealing structure, which refers to a sealing structure that can achieve both sealing and leakage prevention between the relatively rotating first roller 101a and the second roller 101b, while allowing the second roller 101b to rotate relative to the first roller 101a.

[0109] In some embodiments, the sealing structure may include, but is not limited to, a lip seal, a mechanical seal, or a packing seal. The mechanical seal may consist of a rotating ring and a stationary ring, with the rotating ring rotating with the second roller 101b and the stationary ring fixed; the end faces of the two rings are in contact to achieve a seal. The packing seal may be achieved by filling the first gap 101c with flexible packing.

[0110] In the above technical solution, the sealing structure is set inside the first gap 101c, which improves the sealing performance of the first gap 101c and reduces the probability of gas escaping from the first gap 101c. This results in a larger gas velocity and flow rate blown out from the first air outlet 21, which is beneficial to improving dust removal efficiency.

[0111] refer to Figure 6 as well as Figure 7 According to some embodiments of this application, the dust removal device further includes a negative pressure mechanism 107, which has a negative pressure chamber and an adsorption port communicating with the negative pressure chamber. The negative pressure mechanism 107 is located downstream of the conveying roller and is configured to adsorb gas from the surface of the strip 10 after it has been conveyed by the conveying roller.

[0112] The negative pressure mechanism 107 is located downstream of the conveyor roller. When the strip 10 is conveyed by the conveyor roller, dust on the surface of the strip 10 is blown away by air. Afterwards, the strip 10 passes through the negative pressure mechanism 107, which can adsorb the dust-laden gas from the surface of the strip 10. Exemplarily, the adsorption port is located below the strip 10 and corresponds to the contact area between the strip 10 and the outer peripheral surface of the roller body 101.

[0113] In some embodiments, the negative pressure mechanism 107 further includes a suction pipe 50 and a negative pressure source. The suction pipe 50 connects the negative pressure source and the negative pressure chamber. The negative pressure source draws gas from the negative pressure chamber through the suction pipe 50, so that the gas pressure in the negative pressure chamber is negative, thereby enabling the adsorption of gas from the surface of the strip 10 conveyed by the conveying roller through the adsorption port. Exemplarily, the suction pipe 50 can be located below the negative pressure chamber or on the side of the negative pressure chamber.

[0114] In some embodiments, the negative pressure source may include, but is not limited to, one of a vacuum pump, negative pressure pump, suction pump, suction fan, centrifugal suction fan, axial flow suction fan, negative pressure generator, jet vacuum pump, or vacuum generator.

[0115] In the above technical solution, by setting the negative pressure mechanism 107 downstream of the conveying roller, the dust blown up on the surface of the strip 10 can be collected, thereby achieving efficient dust removal and closed-loop recycling of the dust on the surface of the strip 10.

[0116] refer to Figure 8 According to some embodiments of this application, an adjusting member 108 is provided in the negative pressure cavity. The adjusting member 108 is used to define a second chamber 32 with adjustable volume in the negative pressure cavity. The second chamber 32 is connected to the adsorption port.

[0117] An adjusting member 108 is disposed within the negative pressure chamber, which can define a second chamber 32 within the negative pressure chamber, and the volume of the second chamber 32 can be changed by adjusting the adjusting member 108. An adsorption port can be provided corresponding to the second chamber 32.

[0118] In some embodiments, the adjusting member 108 can be an axially movable piston. The piston cooperates with the inner wall of the roller body 101 that forms a negative pressure cavity to define two chambers in the negative pressure cavity, one of which serves as the second chamber 32. The volume of the two chambers is changed by pushing and pulling the piston, thereby changing the volume of the second chamber 32.

[0119] In some embodiments, the adjusting member 108 may also include a plug and a screw structure, one end of which is connected to the plug. The plug is used to cooperate with the inner wall of the roller body 101 that forms a negative pressure cavity to define two chambers in the negative pressure cavity, one of which serves as the second chamber 32. The screw structure can rotate and drive the plug to move within the negative pressure cavity to change the volume of the two chambers, thereby changing the volume of the second chamber 32.

[0120] In some embodiments, the adjusting member 108 may also include an elastic airbag located within the negative pressure chamber, occupying a portion of the chamber's volume, with the remaining space forming the second chamber 32. By filling or evacuating the elastic airbag with or without gas / liquid, the volume of the elastic airbag is changed, thereby altering the volume of the second chamber 32.

[0121] In some embodiments, the adjusting member 108 may also include a partition that divides the negative pressure chamber into two chambers, one of which serves as the second chamber 32. By moving the partition, the volume of the second chamber 32 can be changed.

[0122] In some embodiments, the adjusting member 108 may also include a bellows structure and a telescopic rod. The bellows structure is connected to the telescopic rod. The bellows occupies part of the volume of the negative pressure chamber, and the remaining space of the negative pressure chamber constitutes the second chamber 32. By adjusting the telescopic rod, the bellows can be stretched or compressed to change the volume of the negative pressure chamber occupied by the bellows, thereby changing the volume of the second chamber 32.

[0123] In the above technical solution, the volume of the second chamber 32 is the effective volume of the negative pressure chamber. The adjusting component 108 can change the negative pressure of the negative pressure chamber and the airflow buffering capacity by adjusting the effective volume of the negative pressure chamber, so as to adapt to different dust removal needs.

[0124] According to some embodiments of this application, the adjusting member 108 includes: a second partition 108a and a guide structure 108b. The second partition 108a is located in the negative pressure cavity to divide the negative pressure cavity into two chambers arranged axially, one of which serves as the second chamber 32. The guide structure 108b is located in the negative pressure cavity and extends axially along the negative pressure cavity. The guide structure 108b is configured to cooperate with the second partition 108a to allow the second partition 108a to move axially along the negative pressure cavity, thereby adjusting the volume of the second chamber 32.

[0125] In some embodiments, the second partition 108a may include, but is not limited to, a baffle, a piston, a bellows, or a diaphragm. As the second partition 108a moves, the ratio of the volumes of the two chambers changes, thereby causing a change in the volume of the second chamber 32.

[0126] In some embodiments, the second partition 108a is in a sealing fit with the inner wall of the negative pressure structure that forms the negative pressure cavity.

[0127] In other embodiments, there may also be a small gap between the second partition 108a and the inner wall of the negative pressure mechanism 107 forming the negative pressure cavity, which facilitates the sliding of the second partition 108a.

[0128] In some embodiments, the guide structure 108b can be a guide rail or a slide groove, and the second partition 108a is provided with a slider that matches the guide rail or slide groove, which can slide along the guide rail or slide groove, thereby causing the second partition 108a to slide along the guide structure 108b.

[0129] In some embodiments, the guide structure 108b may also include a guide sleeve, with the end of the second separator 108a slidingly engaged with the guide sleeve.

[0130] In some embodiments, the second partition 108a may also be provided with a through hole, and the second partition 108a is sleeved on the guide structure 108b through the through hole, so that the second partition 108a slides along the guide structure 108b.

[0131] In some embodiments, the second partition 108a may also be a bellows, and the guide structure 108b may be a telescopic rod. The bellows is connected to the telescopic rod, and the bellows occupies part of the volume of the negative pressure chamber. The remaining space of the negative pressure chamber constitutes the second chamber 32. By adjusting the telescopic rod, the bellows can be stretched or compressed to change the volume of the negative pressure chamber occupied by the bellows, thereby changing the volume of the second chamber 32.

[0132] Figure 8 As an example, the structure is illustrated with a bellows as the first separator.

[0133] In the above technical solution, the second partition 108a and the guide structure 108b are used to realize the volume adjustment of the second chamber 32. The structure is simple and compact, easy to assemble, and the sliding movement is smooth and reliable. It can realize continuous volume adjustment and high adjustment accuracy.

[0134] refer to Figure 8 According to some embodiments of this application, the second partition 108a is a bellows; the guide structure 108b is connected to the bellows and is configured to be axially expandable and contractible along the negative pressure chamber, so as to drive the bellows to expand and contract along the negative pressure chamber, thereby adjusting the volume of the second chamber 32.

[0135] In some embodiments, the guide structure 108b extends along the first direction X, the bellows is located on one side of the guide structure 108b along the first direction X, and the area where the guide structure 108b is located is the second chamber 32.

[0136] In some embodiments, the guide structure 108b may include, but is not limited to, a multi-stage telescopic rod structure, a piston rod structure, a screw telescopic structure, or an electric push rod structure. The multi-stage telescopic rod structure may include nested inner and outer rods, which can slide relative to each other to achieve telescopic movement. In the piston rod structure, the piston cooperates with the cylinder, driving the rod to extend or retract via pneumatic or hydraulic pressure. In the screw telescopic structure, the screw cooperates with the nut, achieving rod extension or retraction through rotation. The electric push rod structure incorporates a motor and transmission mechanism to drive the rod to automatically extend or retract.

[0137] In the above technical solution, a bellows is used to adjust the volume of the second chamber 32. The volume of the second chamber 32 can be directly changed by utilizing the axial expansion and contraction deformation of the bellows itself. The expansion and contraction process is smooth with low movement resistance. Moreover, the overall structure has no sliding friction parts, making it simple and compact. It can achieve a large range of volume adjustment within a small installation space.

[0138] According to some embodiments of this application, the second chamber 32 is provided corresponding to the first chamber 31.

[0139] The second chamber 32 and the first chamber 31 are configured to be at least partially opposite each other. For example, the second chamber 32 may be located below the first chamber 31.

[0140] In the above technical solution, the strip 10 can be transported in the area where the first chamber 31 is located, and the second chamber 32 is set in the area corresponding to the first chamber 31, so that the negative pressure mechanism 107 can adsorb the dust on the surface of the strip 10 more accurately and in a timely manner, which is conducive to preventing the dust from flying again and realizing centralized collection.

[0141] This application provides a transmission device for transmitting strip 10, and the transmission device includes the dust removal device in the above embodiment.

[0142] The conveying rollers in the dust removal device are used to transport the strip 10 and remove dust from the strip 10 during transport. In some embodiments, the conveying device can be used in at least one of the battery coating process, rolling process, slitting process, die-cutting process, winding process, or stacking process, in which the conveying device can remove dust from the conveyed strip 10.

[0143] The above technical solution integrates the conveying and dust removal functions of the strip 10 into one, simplifying the production line layout and reducing the risk of strip 10 damage between processes.

[0144] The technical solution of this application will be further described below with reference to a specific embodiment.

[0145] refer to Figures 3 to 8 The dust removal device includes a conveying roller and an air supply mechanism. The conveying roller includes a roller body 101 and a first separator 102a. The roller body 101 is used to convey the strip 10. The outer peripheral surface of the roller body 101 has a plurality of first air outlets 21. The roller body 101 has a cavity. The first separator 102a is disposed in the cavity and defines a first chamber 31 in the cavity. The first chamber 31 is connected to the plurality of first air outlets 21. The air supply mechanism is used to supply gas to the first chamber 31 so that the gas is blown toward the strip 10 through the plurality of first air outlets 21.

[0146] Both the roller body 101 and the cavity extend along the first direction X. One end of the roller body 101 along the first direction X is provided with an air inlet. The air supply mechanism is used to supply gas to the first chamber 31 via the air inlet. The conveying roller also includes an airflow distribution structure 103 disposed within the cavity. The airflow distribution structure 103 is configured to guide the gas supplied to the first chamber 31 along the first direction X. The airflow distribution structure 103 includes two guiding bodies 103a, each extending along the first direction X. Each guiding body 103a contains a guiding cavity 41 extending along the first direction X. One end of the guiding cavity 41 communicates with the air inlet. The outer peripheral surface of the guiding body 103a is provided with multiple guiding holes 42 spaced apart along the first direction X. The guiding holes 42 communicate with the guiding cavity 41 and are corresponding to the first chamber 31.

[0147] The roller body 101 includes: a first roller body 101a and a second roller body 101b. The first roller body 101a has a cavity, and a second air outlet 22 communicating with the cavity is provided on the wall of the first roller body 101a. The second air outlet 22 is strip-shaped and located on one side of the first roller body 101a. The second roller body 101b is sleeved on the outer periphery of the first roller body 101a, and a first gap 101c is provided between the first roller body 101a and the second roller body 101b. A plurality of first air outlets 21 are arranged around the outer periphery of the second roller body 101b, and both the first air outlets 21 and the second air outlets 22 are communicating with the first gap 101c. The conveying roller also includes: a rotating shaft 104, which passes through the cavity and is connected to the second roller body 101b to drive the second roller body 101b to rotate relative to the first roller body 101a. The conveying roller also includes a driving mechanism 105, which is used to drive the rotating shaft 104 to rotate. The conveying roller also includes a mounting frame 106 and a bearing. The first roller body 101a is fixedly connected to the mounting frame 106. The bearing connects the inner wall of the first roller body 101a to the outer periphery of the rotating shaft 104. The drive mechanism 105 drives the rotating shaft 104 to rotate, thereby causing the second roller body 101b to rotate relative to the first roller body 101a. The first partition 102a is located in the cavity to divide the cavity into two chambers arranged along the first direction X, one of which serves as the first chamber 31. The first partition 102a has a through hole and is sleeved on the outer periphery of the rotating shaft 104 and the guide body 103a through the through hole, so that the first partition 102a can slide simultaneously along the rotating shaft 104 and the guide body 103a to adjust the volume of the first chamber 31. The first partition 102a can be a baffle.

[0148] The conveying roller also includes a sealing structure disposed within the first gap 101c. The roller body 101 may include a first end and a second end. The first end is provided with an air inlet and a drive mechanism 105 to realize the rotation of the second roller body 101b. The sealing structure may be disposed in the area where the first end is located.

[0149] The dust removal device further includes a negative pressure mechanism 107, which has a negative pressure chamber and an adsorption port communicating with the negative pressure chamber. The negative pressure mechanism 107 is located downstream of the conveying roller and is configured to adsorb gas from the surface of the strip 10 after it has been conveyed by the conveying roller. An adjusting member 108 is provided inside the negative pressure chamber to define a second chamber 32 with an adjustable volume. The second chamber 32 communicates with the adsorption port. The adjusting member 108 includes a bellows and a telescopic rod. The bellows is connected to the telescopic rod and occupies part of the volume of the negative pressure chamber. The remaining space of the negative pressure chamber constitutes the second chamber 32. By adjusting the telescopic rod, the bellows can be stretched or compressed to change the volume occupied by the bellows in the negative pressure chamber, thereby changing the volume of the second chamber 32. The second chamber 32 is correspondingly arranged with the first chamber 31.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dust removal device, characterized in that, include: A conveying roller includes a roller body, a rotating shaft, and a first separator. The roller body is used to convey a strip material. The outer peripheral surface of the roller body has a plurality of first air outlets. The roller body has a cavity. The rotating shaft is located in the cavity and connected to the roller body to drive the outer peripheral surface of the roller body to rotate. The first separator is disposed in the cavity to define a first chamber in the cavity. The first separator is configured to slide along the rotating shaft to adjust the volume of the first chamber. The first chamber communicates with the plurality of first air outlets. An air delivery mechanism is provided for supplying gas to the first chamber such that the gas is blown toward the strip through the plurality of first air outlets.

2. The dust removal device according to claim 1, characterized in that, The first separator is a baffle, the baffle has a through hole, and the rotating shaft passes through the through hole so that the first separator can slide along the rotating shaft.

3. The dust removal device according to claim 1, characterized in that, Both the roller body and the cavity extend along a first direction. One end of the roller body along the first direction is provided with an air inlet. The air supply mechanism is used to supply gas to the first cavity via the air inlet. The conveying roller further includes: An airflow distribution structure is disposed within the cavity, and the airflow distribution structure is configured to guide the gas delivered to the first chamber along the first direction.

4. The dust removal device according to claim 3, characterized in that, The airflow uniform distribution structure includes: At least one flow guiding body extends along the first direction. The flow guiding body has a flow guiding cavity extending along the first direction. One end of the flow guiding cavity is connected to the air inlet. The outer peripheral surface of the flow guiding body has a plurality of flow guiding holes arranged at intervals along the first direction. The flow guiding holes are connected to the flow guiding cavity and are arranged corresponding to the first chamber.

5. The dust removal device according to claim 4, characterized in that, The first partition is configured to slide simultaneously along the rotation axis and the flow guide body to adjust the volume of the first chamber.

6. The dust removal device according to claim 1, characterized in that, The roller body includes: A first roller body, the first roller body having the cavity, and a second air outlet communicating with the cavity on the wall of the first roller body, the second air outlet being strip-shaped and located on one side of the first roller body; The second roller body is sleeved on the outer periphery of the first roller body. There is a first gap between the first roller body and the second roller body. The plurality of first air outlets are arranged around the outer periphery of the second roller body. Both the first air outlet and the second air outlet are connected to the first gap. The conveying roller also includes: A rotating shaft passes through the cavity and is connected to the second roller to drive the second roller to rotate relative to the first roller.

7. The dust removal device according to claim 6, characterized in that, The conveying roller also includes: Mounting frame, the first roller body is fixedly connected to the mounting frame; A bearing connects the inner wall of the first roller body to the outer periphery of the rotating shaft.

8. The dust removal device according to claim 6, characterized in that, The conveying roller also includes a sealing structure, which is disposed within the first gap.

9. The dust removal device according to any one of claims 1-8, characterized in that, The dust removal device also includes: A negative pressure mechanism is provided, which has a negative pressure chamber and an adsorption port communicating with the negative pressure chamber. The negative pressure mechanism is located downstream of the conveying roller and is configured to adsorb gas from the surface of the strip after it has been conveyed by the conveying roller.

10. The dust removal device according to claim 9, characterized in that, The negative pressure chamber is provided with an adjusting component, which is used to define a second chamber with an adjustable volume within the negative pressure chamber. The second chamber is connected to the adsorption port.

11. The dust removal device according to claim 10, characterized in that, The adjusting element includes: A second partition is located within the negative pressure chamber to divide the negative pressure chamber into two chambers arranged axially, one of which serves as the second chamber. A guide structure, located within the negative pressure chamber and extending axially along the negative pressure chamber, is configured to cooperate with the second partition to allow the second partition to move axially along the negative pressure chamber, thereby adjusting the volume of the second chamber.

12. The dust removal device according to claim 11, characterized in that, The second separator is a corrugated pipe; The guide structure is connected to the bellows and is configured to be axially expandable and contractible along the negative pressure chamber, thereby driving the bellows to expand and contract along the negative pressure chamber and thus adjusting the volume of the second chamber.

13. The dust removal device according to claim 10, characterized in that, The second chamber is arranged correspondingly to the first chamber.

14. A transmission device, characterized in that, The transmission device is used to transmit strip material, and the transmission device includes the dust removal device according to any one of claims 1-13.

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