Dust removal equipment for powder box

Abstract

The utility model relates to the technical field of powder cleaning equipment, in particular to dust removal equipment for a powder box. The dust removal equipment for the powder box comprises a rack, a cleaning device and a moving device, wherein the cleaning device and the moving device are connected to the rack; the cleaning device comprises a cover body structure, a purging mechanism and an adsorption mechanism; the moving device is used for enabling the powder box to move relative to the cover body structure, so that the cover body structure covers a powder box door of the powder box and defines a cavity with the powder box door; the powder box door is purged through the purging mechanism, and the cavity is sucked through the adsorption mechanism. According to the dust removal equipment, the cover body structure is tightly attached to the powder box door to form the closed cavity, it is ensured that high-pressure airflow of the blowing mechanism can directly act on all the surfaces, including gaps and dead corners, of the powder box door, and attached powder dirt and black spots are effectively blown off. And meanwhile, the suction effect of the adsorption mechanism further ensures that the blown-off dust can be collected in time, and the dust is prevented from being re-deposited into the product.

Description

Technical Field

[0001] The present application relates to the technical field of powder cleaning equipment, and in particular to a dust removal equipment for a powder box. Background Art

[0002] The powder box is mainly used to store, protect and distribute milk powder during the milk powder production process to ensure the continuity of the production process and the sanitation and safety of the product. Milk powder itself has a certain degree of adhesion and fluidity, and the powder box door needs to frequently perform powder feeding and powder removal operations during the production process. Due to the existence of dead corners and gaps in the powder box door, as well as possible blind spots for cleaning, it may be difficult for operators to completely remove the powder residues in these areas during daily cleaning. Over time, these residues will gradually accumulate and form powder scale and black spots.

[0003] During the powder adding process, powder dirt and black spots in the gaps and dead corners of the powder box door can easily fall into the product, directly affecting the purity and appearance quality of the milk powder. Due to the difficulty in cleaning the powder box door, companies need to invest more manpower and material resources in cleaning and manual visual inspection, which increases labor costs and affects the reliability and capacity of the production line. Summary of the invention

[0004] In view of the above-mentioned technical problems, the purpose of this application is to propose a dust removal device for a powder box, aiming to solve the technical problems in the prior art that the powder box door is prone to accumulation of powder scale and black spots and is difficult to clean.

[0005] In a first aspect of the present application, a dust removal device is provided, comprising a frame, a cleaning device and a moving device connected to the frame; the moving device is used to carry a powder box and drive the powder box to move relative to the cleaning device;

[0006] The cleaning device includes a cover structure, a purge mechanism and an adsorption mechanism. The cover structure is configured to cover the powder box door of the powder box when the powder box moves to the cleaning device, so as to form a cavity with the powder box door, so that the powder box door can be purged by the purge mechanism and the cavity can be sucked by the adsorption mechanism.

[0007] In a further scheme of the present application, one end of the cover structure includes an opening, and the purge mechanism includes an air supply pump and a jet rack connected to the air supply pump; wherein the jet rack is annular and is arranged at the opening and located on the inner side of the edge of the cover structure, and a plurality of jet ports arranged at intervals are provided on the jet rack for purging the powder box door.

[0008] In a further solution of the present application, the adsorption mechanism includes a dust removal tank and an air pump connected to the dust removal tank; wherein, an opening is provided at one end of the cover structure away from the opening, and the cavity is connected to the dust removal tank through the opening so that the adsorption mechanism can suck the cavity.

[0009] In a further aspect of the present application, the cleaning device further includes a sealing ring, which is disposed at one end of the cover structure where there is an open end.

[0010] In a further aspect of the present application, the frame includes a base and a frame disposed on the base. The moving device includes: a bottom support plate for carrying the powder box and movably connected to the base; a driving mechanism disposed at the frame and connected to the bottom support plate, and the driving mechanism can move the bottom support plate closer to or farther away from the cleaning device.

[0011] In a further aspect of the present application, the driving mechanism includes a telescopic cylinder and a connecting plate. The telescopic cylinder is fixedly connected to the frame, and the telescopic end of the telescopic cylinder is connected to the bottom support plate through the connecting plate to control the movement of the bottom support plate closer to or farther away from the cleaning device.

[0012] In a further aspect of the present application, the cover structure is connected to the frame and is located at the end of the bottom support plate; a plurality of positioning blocks are provided at one end of the bottom support plate facing away from the cover structure to abut against the powder box when the bottom support plate moves.

[0013] In a further aspect of the present application, the positioning block is L-shaped.

[0014] In a further aspect of the present application, the moving device further includes a sliding limit device. The sliding limit device is fixed to the frame and is slidably or rollably connected to at least one side of the powder box.

[0015] In a further aspect of the present application, the sliding limit device includes: a plurality of support frames connected to the frame and spaced apart along the telescopic direction of the bottom support plate; rollers connected to the ends of the support frames to rollably connect to both sides of the powder box.

[0016] In a further aspect of the present application, the cross-sectional area of the cover structure gradually decreases from the open end to the direction along the opening.

[0017] In a further aspect of the present application, the moving device further includes: a mechanical sensor disposed at the powder box door for detecting the contact force with the cover structure; a controller electrically connected to the mechanical sensor and the moving device to control the moving device to stop driving the powder box to move when the contact force reaches a preset threshold.

[0018] In summary, the dust removal device for a powder box provided by the present application has at least the following beneficial effects: Through the coordinated operation of the frame, the cleaning device (including the cover structure, the blowing mechanism, and the adsorption mechanism), and the moving device, the dust removal device forms a closed cavity by closely fitting the cover structure with the powder box door, ensuring that the high-pressure air flow of the blowing mechanism can directly act on all surfaces of the powder box door, including gaps and dead corners, effectively blowing off the attached powder scale and black spots. At the same time, the suction effect of the adsorption mechanism further ensures that the blown-off dust can be collected in a timely manner, preventing the dust from redepositing on the product. Since the dust removal device can thoroughly remove the powder scale and black spots on the powder box door, the purity and appearance quality of products such as milk powder are significantly improved. In addition, compared with the traditional manual cleaning method, which requires a large amount of manpower and material resources, is inefficient, and is prone to incomplete cleaning. The dust removal device proposed in the present application realizes automatic cleaning, reduces the manpower requirement, and lowers the labor cost. At the same time, automatic cleaning also improves the cleaning efficiency and consistency, reducing the cleaning quality problems caused by human factors.

[0019] Other features and advantages of the embodiments of the present application will be described in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation manners of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the dust removal device for a powder box provided by the embodiment of the present application from its axonometric view;

[0022] Figure 2 (Left) It is a node diagram when the powder box proposed in the embodiment of the present application moves relative to the cover structure, and the right is a schematic diagram of the cover structure covering the powder box door;

[0023] Figure 3 It is a schematic structural diagram of the dust removal device provided by the embodiment of the present application from its top view; and

[0024] Figure 4 It is a schematic structural diagram of the dust removal device provided by the embodiment of the present application from its front view.

[0025] Description of the reference numerals:

[0026] 100, dust removal device;

[0027] 10, frame;

[0028] 11. Base; 12. Frame;

[0029] 20. Cleaning device;

[0030] 21. Cover structure;

[0031] 22. Blowing mechanism; 221. Air supply pump; 222. Jet rack;

[0032] 23. Adsorption mechanism; 231. Dust removal tank; 232. Exhaust pump;

[0033] 24. Sealing ring;

[0034] 30. Movement device;

[0035] 31. Bottom support plate; 311. Positioning block;

[0036] 32. Driving mechanism; 321. Telescopic cylinder; 322. Connecting plate;

[0037] 33. Sliding limit device; 331. Support frame; 332. Roller;

[0038] A. Open mouth; B. Opening; C. Jet orifice; P. Cavity. Detailed implementation manner

[0039] For the descriptions of terms such as "center", "lateral", "upper", "lower", "bottom", "inner", "outer", "peripheral surface", etc. indicating the orientation or positional relationship hereinafter, without special instructions, it is understood as the orientation or positional relationship based on the drawings shown. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application.

[0040] In addition, for features limited by "first" and "second" only for descriptive purposes, it cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Features limited by "first" and "second" may explicitly or implicitly include at least one of the limited features. For the description of "multiple", the general meaning is at least including two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0041] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection, it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the description of this specification, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] As Figure 1 , a dust removal device 100 for a powder box provided by an embodiment of this application, the dust removal device 100 includes a frame 10 and a cleaning device 20 and a moving device 30 connected to the frame 10.

[0044] In this dust removal device 100, the frame 10 serves as the basic support structure of the entire dust removal device, and is used to carry and stably connect the cleaning device 20 and the moving device 30. The moving device 30 is connected to the frame 10 and is used to realize the relative displacement between the powder box and the cleaning device 20. The cleaning device 20 includes a cover structure 21, a blowing mechanism 22, and an adsorption mechanism 23.

[0045] Based on a general inventive concept of this application, the moving device 30 is used to carry the powder box and drive the powder box to move relative to the cover structure 21, and enable the cover structure 21 to cover the powder box door of the powder box, so as to enclose a cavity P with the powder box door; the powder box door is blown by the blowing mechanism 22, and the cavity P is sucked by the adsorption mechanism 23.

[0046] It is understandable that the motion device 30 is designed to carry the powder box and can drive the powder box to move relative to the cover structure 21. This movement enables the cover structure 21 to cover the powder box door of the powder box. When the cover structure 21 and the powder box door are closed, they jointly form a sealed cavity P, providing a relatively closed environment for subsequent purging and suction operations. After the cavity P is formed, the purging mechanism 22 starts to work, purging the powder box door by means of high-speed air flow or mechanical vibration to remove dust or impurities on the door. When the purging mechanism 22 purges the powder box door, the adsorption mechanism 23 starts synchronously or asynchronously to perform negative pressure suction on the air in the cavity P. In this way, the blown-up dust or impurities will be sucked in by the adsorption mechanism 23, thus achieving dust removal.

[0047] Optionally, the movements of the cover structure 21 and the powder box are relative. That is, in one solution, the cover structure 21 is fixedly installed on the frame 10, and the motion device 30 is used to drive the powder box to approach the cover structure 21; or in another solution, the position of the powder box is fixed, and the motion device 30 moves the cover structure 21 towards the powder box; or it is also possible to adopt the simultaneous movement and approach of the powder box and the cover structure 21, so that the powder box and the cover structure 21 approach each other at a relative speed until they are in close contact and form a sealed cavity P. It can be specifically configured adaptively according to the actual scenario. No matter which solution is adopted, it is necessary to ensure that an effective sealed cavity P can be formed between the cover structure 21 and the powder box door, so that the subsequent purging and suction operations can be carried out smoothly.

[0048] In a preferred solution, the cover structure 21 is fixedly installed on the frame 10 with its position unchanged, and the motion device 30 is responsible for driving the powder box to approach the cover structure 21 along a certain trajectory until the powder box door of the powder box is in close contact with the cover structure 21, forming a sealed cavity P. The purging mechanism 22 can generate high-pressure air flow to purge the edge area of the powder box door, blowing off the dust and impurities adhering to the powder box door. While the purging mechanism 22 completes the purging operation, the adsorption mechanism 23 uses the negative pressure principle to suck the cavity P to achieve the collection and treatment of dust.

[0049] In summary, the dust removal device 100 for the powder box provided by the present application, through the coordinated work of the frame 10, the cleaning device 20 (including the cover structure 21, the purging mechanism 22 and the adsorption mechanism 23), and the movement device 30, the dust removal device 100 forms a closed cavity P through the close fit of the cover structure 21 with the powder box door, ensuring that the high-pressure air flow of the purging mechanism 22 can directly act on all surfaces of the powder box door, including gaps and dead corners, effectively blowing off the attached powder scale and black spots. At the same time, the suction effect of the adsorption mechanism 23 further ensures that the blown-off dust can be collected in time, avoiding the re-deposition of dust onto the product. Since the dust removal device 100 can thoroughly remove the powder scale and black spots on the powder box door, the purity and appearance quality of products such as milk powder are significantly improved. On the other hand, the traditional manual cleaning method requires a large amount of manpower and material resources, and has low efficiency, and it is easy to have incomplete cleaning. The dust removal device 100 proposed in the present application realizes automatic cleaning, reduces the manpower requirement, and reduces the labor cost. At the same time, the automatic cleaning also improves the cleaning efficiency and consistency, and reduces the cleaning quality problems caused by human factors.

[0050] Continue to refer to Figures 1 to 2 , a specific embodiment is provided below:

[0051] One end of the cover structure 21 includes an open end A, and the purging mechanism 22 includes an air supply pump 221 and a jet rack 222 communicating with the air supply pump 221; wherein, the jet rack 222 is arranged at the open end A and inside the edge of the cover structure 21, and a number of jet ports C are arranged on the jet rack 222 at intervals for purging the powder box door b.

[0052] In the present application, that is, the jet rack 222 is designed to be annular and arranged inside the open end A, that is, inside the edge of the cover structure 21. Ensure that the high-pressure air flow can evenly and comprehensively cover the entire surface of the powder box door b, especially the gaps and dead corners that are difficult to reach in the powder box door b.

[0053] Specifically, the jet rack 222 can be designed to fit the size and shape of the powder box door b. In a feasible solution, the open end A of the cover structure 21 is larger than the size of the powder box door b. When the cover structure 21 covers the powder box door b, the jet rack 222 just surrounds and is arranged at the edge of the powder box door b, which can ensure that the jet air flow can evenly cover the entire peripheral area of the powder box door b. It can more effectively achieve the purpose, reduce dead corners and blind areas, and improve the treatment effect.

[0054] At the same time, through the number and position of the jet ports C, precise purging of different areas and angles of the powder box door b can be realized, ensuring that the powder scale and black spots are effectively removed.

[0055] The air supply pump 221 as a power source of the purging mechanism provides a stable high-pressure airflow for the jet rack 222, ensuring the continuity and stability of the airflow during the purging process. At the same time, the air pressure can be adjusted, and the output air pressure can be adjusted according to actual needs.

[0056] like Figure 1 , Figure 3 as well as Figure 4 Furthermore, the adsorption mechanism 23 includes a dust removal tank 231 and an air pump 232 connected to the dust removal tank 231; wherein, an opening B is provided at one end of the cover structure 21 away from the opening A, and the cavity P is connected to the dust removal tank 231 through the opening B, so that the adsorption mechanism 23 can suck the cavity P.

[0057] The dust removal tank 231 is used to collect the sucked out dust, particles or other materials that need to be removed. The air pump 232 is used to generate negative pressure to drive the gas (including the dust and particles therein) to flow from the cavity P to the dust removal tank 231. At the other end of the cover structure 21, an opening B is provided to connect the cavity P and the dust removal tank 231.

[0058] When the vacuum pump 232 is started, it will generate negative pressure inside the dust removal tank 231. This allows the negative pressure effect generated by the vacuum pump 232 to be transmitted to the inside of the cavity P. Under the action of the negative pressure, the gas in the cavity P (including impurities such as dust and particles) will be sucked out and flow into the dust removal tank 231 through the opening B. In the dust removal tank 231, these sucked out substances will be collected.

[0059] In the embodiment, the cross-sectional area of the cover structure 21 gradually decreases from the opening A to the direction along the opening B. The reduction in cross-sectional area means that the area through which the air passes is reduced, which makes the airflow more concentrated when passing through the cover structure. As the airflow channel becomes narrower, the air flow rate will increase, and the increase in flow rate will lead to a decrease in pressure, thereby enhancing the negative pressure effect generated by the vacuum pump 232. This enhanced negative pressure can more effectively suck impurities out of the cavity P and improve the dust removal quality.

[0060] Furthermore, the cleaning device 20 further includes a sealing ring 24, which is disposed at one end of the cover structure 21 where the opening A is formed. This ensures that when the opening A of the cover structure 21 covers the powder box door b, a good sealing effect can be achieved. In addition, the sealing ring 24 also plays a certain buffering role, which can reduce the impact force when the cover structure 21 contacts the powder box door b, and avoid direct rigid contact between the two.

[0061] In an embodiment of the present application, the frame 10 includes a base 11 and a frame 12 disposed on the base 11. The moving device 30 includes a bottom support plate 31 and a driving mechanism 32. The bottom support plate 31 is used to carry the powder box and is movably connected to the base 11; the driving mechanism 32 is disposed at the frame 12 and connected to the bottom support plate 31, and the driving mechanism 32 can move the bottom support plate 31 closer to or farther away from the cover structure 21.

[0062] It can be understood that the base 11 is the basic part of the frame, which provides a stable support surface for carrying the weight of the entire device. The frame 12 is disposed on the base and is the main structure of the frame.

[0063] The bottom support plate 31 is a platform for carrying the powder box. The bottom support plate is movably connected to the base 11 by means of sliding guides, rollers, chains, etc., so as to be able to slide along the base 11.

[0064] The driving mechanism 32 is installed at an appropriate position of the frame 12 and is connected to the bottom support plate 31 through mechanical connections (such as connecting rods, shafts, etc.). When the driving mechanism is started, it will transmit power to the bottom support plate 31 through the transmission device, so that it moves closer to or farther away from the cover structure 21 along a predetermined path.

[0065] In a specific solution, the driving mechanism 32 includes a telescopic cylinder 321 and a connecting plate 322. The telescopic cylinder 321 is fixedly connected to the frame 12, and the telescopic end of the telescopic cylinder 321 is connected to the bottom support plate 31 through the connecting plate 322 to control the movement of the bottom support plate 31 closer to or farther away from the cover structure 21.

[0066] It can be understood that the telescopic cylinder 321 is the power source of the entire driving mechanism. It is fixedly connected to the frame 12 to provide the necessary thrust and pull force for the movement of the bottom support plate 31. The connecting plate 322 serves as a bridge between the telescopic cylinder 321 and the bottom support plate 31. One end of it is connected to the telescopic end of the telescopic cylinder 321, and the other end is fixedly connected to the bottom support plate 31. Through the transmission of the connecting plate 322, the telescopic movement of the telescopic cylinder 321 can be converted into the linear movement of the bottom support plate 31, so as to carry the powder box closer to or farther away from the cover structure 21.

[0067] The connection position of the cover structure 21 and the frame 12 is not limited, that is, the cover structure 21 can be flexibly installed at different positions on the frame 12 according to specific application scenarios and cleaning requirements.

[0068] In a preferred embodiment, the cover structure 21 is connected to the frame 12 and is located at the end of the bottom support plate 31; specifically, the frame 12 is provided with an opening at one end corresponding to the bottom support plate 31 to facilitate the powder box to enter through the opening and be placed on the bottom support plate 31; and the cover structure 21 is disposed at the other end of the bottom support plate.

[0069] In the embodiment of the present application, a plurality of positioning blocks 311 are provided at one end of the bottom support plate 31 facing away from the cover body structure 21, so as to be able to abut against the powder box when the bottom support plate 31 moves. The positioning blocks 311 can ensure that the powder box maintains a relatively fixed position on the bottom support plate 31, preventing the displacement of the powder box caused by vibration or impact during the cleaning process, thereby ensuring the accuracy and stability of the cleaning.

[0070] Optionally, the positioning blocks 311 are L-shaped and can precisely fit the bottom corners of the powder box to ensure the accurate position of the powder box on the bottom support plate 31.

[0071] Among them, the moving device 30 further includes a sliding limiting device 33. The sliding limiting device 33 is fixed on the frame 10 and is slidably or rollably connected to at least one side of the powder box. One of the main functions of the sliding limiting device 33 is to prevent the powder box from shifting horizontally during movement. During the cleaning process, the powder box needs to be accurately moved to a specified position so that the opening A of the cover body structure 21 can accurately align with the powder box door b. If the powder box shifts horizontally during movement, it will result in inaccurate alignment and thus affect the cleaning effect. The sliding limiting device 33 provides a stable guide for the powder box through its sliding or rolling connection design, restricting its movement in an unexpected direction, thereby ensuring that the powder box can be accurately moved to the specified position. The sliding limiting device 33 also makes the movement of the powder box smoother. Through its sliding or rolling connection design, the frictional resistance during movement is reduced, enabling the powder box to move more easily along the predetermined trajectory. This not only improves the movement efficiency but also reduces the vibration and noise generated due to unsmooth movement, enhancing the stability and reliability of the entire cleaning device.

[0072] In an alternative solution of the present application, the sliding limiting device 33 can be a sliding guide rail, a rolling wheel structure, a gear structure, etc.

[0073] In the present application, the sliding limiting device 33 includes a plurality of support frames 331 and rollers 332. The plurality of support frames 331 are connected to the frame 12 and are spaced apart along the telescopic direction of the bottom support plate; ensuring that during the movement of the powder box, multiple points provide support and limitation, thereby more effectively preventing the powder box from shifting horizontally. The number and layout of the support frames 331 should be configured according to specific adaptability.

[0074] The rollers 332 are connected to the ends of the support frames 331 to be rollably connected to both sides of the powder box. When the powder box moves along the telescopic direction of the bottom support plate, the rollers will roll accordingly, thereby keeping the powder box moving on the predetermined trajectory and preventing it from shifting horizontally.

[0075] After the powder box is driven by the moving device 30 and contacts the opening A, the moving device 30 needs to stop driving the powder box to move under a certain contact force. In an extended manner in the embodiment of the present application, the moving device 30 further includes a force sensor and a controller (both not shown in the figures). Among them, the force sensor (not shown in the figure) is arranged at the powder box door b for detecting the contact force with the housing structure 21; the controller is electrically connected to the force sensor and the moving device 30 to control the moving device to stop driving the powder box to move when the contact force reaches a preset threshold. Ensure that the powder box door b and the housing structure have a certain contact force, so as to better achieve its sealing performance. At the same time, it can also extend the service stability of the moving device 30 and prevent it from being damaged and failing under excessive impact force.

[0076] Furthermore, those skilled in the art should understand that if all or part of the sub-modules involved in each product of the dust removal device 100 provided in the embodiments of the present application are combined, replaced, etc. by means of fusion, simple change, mutual transformation, etc., such as the placement and movement of each component, or a detachable design; such as a split design; as long as the combined components can form a device / device / system with a specific function, replacing the corresponding components of the present application with such a device / device / system also falls within the protection scope of the present application.

[0077] The above-described technical features can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification as long as such a combination does not conflict.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still adjust the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these adjustments or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dust removal device for a powder box, characterized in that, It comprises a frame (10) and a cleaning device (20) and a moving device (30) connected to the frame (10); The cleaning device (20) comprises a cover structure (21), a purge mechanism (22) and an adsorption mechanism (23); The moving device (30) is used to move the powder box relative to the cover structure (21), so that the cover structure (21) covers the powder box door of the powder box and forms a cavity (P) with the powder box door. The purge mechanism (22) is capable of purge the powder box door, and the adsorption mechanism (23) is capable of suctioning the cavity (P).

2. The dust removal device according to claim 1, characterized in that: One end of the cover structure (21) comprises an opening (A), and the purge mechanism (22) comprises an air supply pump (221) and an air jet rack (222) connected to the air supply pump (221); The jet rack (222) is annular and is arranged at the opening (A) and located inside the edge of the cover structure (21); the jet rack (222) is provided with a plurality of jet ports (C) arranged at intervals for purging the powder box door.

3. The dust removal device according to claim 2, characterized in that, The adsorption mechanism (23) comprises a dust removal tank (231) and an air extraction pump (232) connected to the dust removal tank (231); An opening (B) is provided at one end of the cover structure (21) away from the opening (A), and the cavity (P) is connected to the dust removal tank (231) through the opening (B), so that the adsorption mechanism (23) can suck the cavity (P).

4. The dust removal device according to claim 2, characterized in that, The cleaning device (20) further comprises a sealing ring (24), wherein the sealing ring (24) is arranged at one end of the cover structure (21) where the opening (A) is formed.

5. The dust removal device according to claim 1, wherein The frame (10) comprises a base (11) and a frame (12) arranged on the base (11), and the motion device (30) comprises: A bottom support plate (31), used for supporting the powder box and movably connected to the base (11); A driving mechanism (32) is arranged on the frame (12) and connected to the bottom support plate (31); the driving mechanism (32) can cause the bottom support plate (31) to move closer to or farther from the cleaning device (20).

6. The dust removal device according to claim 5, wherein, The driving mechanism (32) comprises a telescopic cylinder (321) and a connecting plate (322); the telescopic cylinder (321) is fixedly connected to the frame (12); the telescopic end of the telescopic cylinder (321) is connected to the bottom support plate (31) via the connecting plate (322) to control the bottom support plate (31) to move closer to or farther from the cleaning device (20).

7. The dust removal device according to claim 5, characterized in that, The cover structure (21) is connected to the frame (12) and is located at the end of the bottom support plate (31); A plurality of positioning blocks (311) are provided on one end of the bottom support plate (31) away from the cover structure (21), so as to support the powder box when the bottom support plate (31) moves.

8. The dust removal device according to claim 5, characterized in that, The moving device (30) further includes a sliding limit device (33), the sliding limit device (33) is fixed on the frame (10), and the sliding limit device (33) is slidably or rollably connected to at least one side of the powder box.

9. The dust removal device according to claim 8, wherein, The sliding limit device (33) includes: A plurality of support frames (331), connected to the frame (12) and spaced along the telescopic direction of the bottom support plate; Rollers (332), connected to the ends of the support frames (331) to rollably connect to both sides of the powder box.

10. The dust removal device according to any one of claims 3 to 9, characterized in that, The cross-sectional area of the cover structure (21) gradually decreases from the open end (A) to the direction along the opening (B).

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