Powder removing device and control method thereof

Abstract

The invention relates to a powder removing device and a control method thereof. The powder removing device comprises a sealing box which comprises a box body provided with an opening; the sealing door can seal at least part of the opening of the box body; the first inflation valve is arranged in the box body and used for conveying gas into the box body; the conveying mechanism can convey the material tank into the sealing box; the powder removing mechanism is arranged on the box body and is used for adsorbing waste powder in the material tank; and the collecting mechanism is arranged on the box body, the powder removing mechanism can convey the waste powder to the collecting mechanism, and the collecting mechanism is used for collecting the waste powder. According to the powder removal device, the integrated operation of powder removal and collection of waste powder is achieved, and the powder removal efficiency of the charging bucket is improved.

Description

Technical Field

[0001] This application relates to the field of magnetic body preparation, and particularly to a powder removal device and its control method. Background Art

[0002] Neodymium iron boron magnets are widely used due to their excellent magnetic properties. Neodymium iron boron magnets are formed by pressing and sintering neodymium iron boron powder, and the neodymium iron boron powder is usually stored in a storage tank. After the neodymium iron boron powder in the storage tank is transferred to the next process, it is necessary to clean the residual neodymium iron boron powder in the storage tank to avoid affecting the quality of subsequent products.

[0003] The method for cleaning the waste in the storage tank is that workers hold a permanent magnet to adsorb the waste in the storage tank. Such a powder removal method has a large workload, and the neodymium iron boron powder has the characteristics of being easy to oxidize and flammable, so there is a risk of combustion and explosion in manual powder removal. Summary of the Invention

[0004] Based on the above problems, this application provides a powder removal device and its control method to improve the efficiency and safety of powder removal.

[0005] In a first aspect, this application provides a powder removal device, including:

[0006] A sealed box, including:

[0007] A box body provided with an opening;

[0008] A sealing door capable of closing at least part of the opening of the box body;

[0009] A first inflation valve provided in the box body for conveying gas into the box body;

[0010] A conveying mechanism capable of sending the storage tank into the sealed box;

[0011] A powder removal mechanism provided in the box body for adsorbing the waste powder in the storage tank;

[0012] A collection mechanism provided in the box body. The powder removal mechanism can convey the waste powder to the collection mechanism, and the collection mechanism is used for collecting the waste powder. The collection mechanism includes:

[0013] A waste bucket provided with a feed inlet;

[0014] A control valve provided at the feed inlet for controlling the opening and closing of the feed inlet;

[0015] A funnel connecting the control valve;

[0016] A second inflation valve provided in the waste bucket, and the second inflation valve is used for conveying gas into the waste bucket;

[0017] An overflow valve is provided in the waste bin.

[0018] According to some embodiments of the present application, the sealing box further includes a first driving unit for driving the sealing door to move.

[0019] According to some embodiments of the present application, the conveying mechanism includes:

[0020] A first guide rail, one end of which extends into the box body;

[0021] A loading slide table slidably arranged on the first guide rail;

[0022] A second driving unit for driving the loading slide table to slide.

[0023] According to some embodiments of the present application, a retaining bar is arranged at the edge of the loading slide table.

[0024] According to some embodiments of the present application, the powder removing mechanism includes:

[0025] A second guide rail arranged on the top of the box body;

[0026] A slider slidably arranged on the second guide rail;

[0027] A carrier arranged on the slider;

[0028] A telescopic rod, one end of which is connected to the carrier;

[0029] An electromagnetic coil arranged at the other end of the telescopic rod;

[0030] A third driving unit for driving the slider to slide;

[0031] A fourth driving unit arranged on the carrier for driving the telescopic rod to expand and contract.

[0032] According to some embodiments of the present application, the telescopic rod includes a plurality of rod bodies nested in sequence, and the fourth driving unit includes:

[0033] A fourth driver arranged on the carrier;

[0034] A wire reel arranged at the driving end of the fourth driver;

[0035] A first rope wound around the wire reel, and the end of the first rope is connected to the innermost rod body among the plurality of rod bodies.

[0036] According to some embodiments of the present application, the innermost rod body of the telescopic rod includes:

[0037] A first sub-rod nested with the outer rod body of the innermost rod body;

[0038] A corrugated pipe, connecting to the end of the first sub-rod;

[0039] A second sub-rod, connecting to the corrugated pipe, and the electromagnetic coil is arranged on the second sub-rod;

[0040] The dust removal mechanism further includes:

[0041] A second rope, one end of which is connected to the carrier, and the other end of the second rope is connected to the second sub-rod. When the telescopic rod extends, the second rope can make the second sub-rod tilt and move relative to the first sub-rod;

[0042] A rotary driver, arranged on the slider, and the carrier is connected to the rotary driver.

[0043] In a second aspect, the present application provides a control method for the above-mentioned dust removal device, including:

[0044] Placing the material tank on the conveying mechanism;

[0045] Using the conveying mechanism to send the material tank into the sealed box, the sealing door closes at least part of the opening of the box body, and controls the first inflation valve to convey inert gas into the box body;

[0046] Controlling the dust removal mechanism to adsorb the waste powder in the material tank and conveying the waste powder to the collection mechanism;

[0047] Using the collection mechanism to collect the waste powder.

[0048] According to some embodiments of the present application, controlling the dust removal mechanism to adsorb the waste powder in the material tank and conveying the waste powder to the collection mechanism includes:

[0049] Controlling the telescopic rod of the dust removal mechanism to extend, and after energizing the electromagnetic coil of the dust removal mechanism, adsorb the waste powder in the material tank;

[0050] Controlling the telescopic rod to retract;

[0051] Controlling the slider of the dust removal mechanism to drive the telescopic rod and the electromagnetic coil to move above the collection mechanism, making the telescopic rod extend and the electromagnetic coil de-energized, so that the waste powder falls into the collection mechanism.

[0052] According to some embodiments of the present application, using the collection mechanism to collect the waste powder includes:

[0053] Conveying inert gas into the waste bin of the collection mechanism;

[0054] Opening the feed port of the waste bin, so that the waste powder in the funnel of the collection mechanism falls into the waste bin.

[0055] The beneficial effects of this application are as follows:

[0056] 1. The powder removal device of this application realizes the integrated operation of powder removal and collection of waste powder, improving the efficiency of powder removal from the material tank.

[0057] 2. The powder removal process of this application is carried out in a sealed box, reducing the oxygen content in the powder removal environment, avoiding spontaneous combustion of waste powder, and improving the safety of powder removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of this application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exceeding the scope protected by this application.

[0059] Figure 1 It is a schematic diagram of the powder removal device in the embodiment of this application Figure 1 ;

[0060] Figure 2 It is a schematic diagram of the powder removal device in the embodiment of this application Figure 2 ;

[0061] Figure 3 It is a schematic diagram of the collection mechanism in the embodiment of this application

[0062] Figure 4 It is Figure 2 The enlarged view of part A in

[0063] Figure 5 It is a schematic diagram of the guide rail groove in the embodiment of this application;

[0064] Figure 6 It is a schematic diagram of the powder removal mechanism and the collection mechanism in the embodiment of this application;

[0065] Figure 7 It is a schematic diagram of the powder removal mechanism in the embodiment of this application;

[0066] Figure 8 It is a schematic diagram of the powder removal mechanism provided with a rotary drive in the embodiment of this application;

[0067] Figure 9 It is Figure 8 The enlarged view of part B in

[0068] Figure 10 It is a schematic diagram of the second sub-rod tilting in the embodiment of this application;

[0069] Figure 11 It is a flowchart of the control method of the powder removal device in the embodiment of this application. Detailed implementation manners

[0070] The following will clearly and completely describe the technical solutions of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope protected by the present application.

[0071] As Figure 1 and Figure 2 shown, an embodiment of the present application provides a powder removing device 100, and the powder removing device 100 includes a sealing box 1, a conveying mechanism 2, a powder removing mechanism 3 and a collecting mechanism 4.

[0072] The sealing box 1 includes: a box body 11, a sealing door 12 and a first inflation valve 13. The interior of the box body 11 is a sealed cavity 111. Optionally, the box body 11 is in the shape of a cuboid. An opening is provided on the side wall of the box body 11. For example, the opening is provided on the left side wall of the box body 11. Figure 1 and Figure 2 The front side wall of the box body 11 is omitted in

[0073] The sealing door 12 is arranged on the box body 11, and the sealing door 12 can close at least part of the opening of the box body 11. According to needs, the sealing door 12 can completely close the opening of the box body 11. Optionally, the sealing door 12 can slide up and down to open or close the opening of the box body 11.

[0074] The first inflation valve 13 is arranged on the box body 11 and is used to convey inert gas into the box body 11. When the powder tank 200 is being deflated in the box body 11, the first inflation valve 13 conveys inert gas into the box body 11 to reduce the oxygen content in the box body 11, avoid spontaneous combustion of the waste powder during the powder removal process, and improve the safety of the powder removing device 100.

[0075] Optionally, an oxygen content detector is arranged on the box body 11 to detect the oxygen content in the box body 11. During the powder removal process, when the detected oxygen content in the box body 11 is lower than a preset value, the first inflation valve 13 conveys inert gas into the box body 11.

[0076] The conveying mechanism 2 can send the powder tank 200 into the sealed cavity 111 of the sealing box 1. After the sealing door 12 is opened, the conveying mechanism 2 sends the powder tank 200 into or out of the sealed cavity 111 through the opening of the box body 11.

[0077] The powder removing mechanism 3 is arranged in the box body 11, for example, arranged on the top of the box body 11. After the powder tank 200 is sent into the sealed cavity 111, the powder removing mechanism 3 is used to adsorb the waste powder in the powder tank 200.

[0078] The collection mechanism 4 is disposed in the box body 11. After the powder removal mechanism 3 adsorbs the waste powder in the material tank 200, it can convey the waste powder to the collection mechanism 4, and the collection mechanism 4 is used to collect the waste powder.

[0079] As Figure 3 shown, the collection mechanism 4 includes: a waste bucket 41, a control valve 42, a funnel 43, a second inflation valve 44, and an overflow valve 45.

[0080] The waste bucket 41 is provided with a feed inlet, the control valve 42 is disposed at the feed inlet of the waste bucket 41, and the control valve 42 is used to control the opening and closing of the feed inlet of the waste bucket 41. The funnel 43 is connected to the control valve 42. Optionally, the funnel 43 is located above the control valve 42, and the control valve 42 is a pneumatic valve. The second inflation valve 44 is disposed on the waste bucket 41, and the second inflation valve 44 is used to convey inert gas into the waste bucket 41. The overflow valve 45 is disposed on the waste bucket 41.

[0081] The powder removal mechanism 3 conveys the waste powder to the funnel 43, the control valve 42 is opened, and the waste powder in the funnel 43 falls into the waste bucket 41. After the waste powder falls into the waste bucket 41, the control valve 42 is closed.

[0082] Before the control valve 42 is opened, the second inflation valve 44 is opened to convey inert gas into the waste bucket 41. After the powder removal mechanism 3 conveys the waste powder to the funnel 43, the sealing door 12 can be opened to remove the material tank 200 from the box body 11. Opening the sealing door 12 may cause the oxygen content in the sealing cavity 111 to rise. By conveying inert gas into the waste bucket 41 through the second inflation valve 44, it can ensure that the oxygen content in the waste bucket 41 is relatively low, avoiding spontaneous combustion of the waste powder in the waste bucket 41. After the control valve 42 is closed, the second inflation valve 44 is closed. When the air pressure in the waste bucket 41 is too high, the gas in the bucket can be discharged by the overflow valve 45.

[0083] Optionally, the funnel 43 is of a "V" - shaped structure, and the lower end of the funnel 43 is connected to the control valve 42 through a flange. The funnel 43 can be made of a material that is not prone to generating static electricity. The inflation pressure of the first inflation valve 13 and the second inflation valve 44 is 100 - 150 KPa, and the flow rate is 10 - 15 L / min, which can quickly discharge the oxygen in the box body 11 and the waste bucket 41.

[0084] The powder removal device 100 of this embodiment has a high degree of automation, reduces the manual workload during the powder removal process, and improves the powder removal efficiency. The powder removal and waste powder collection are carried out in the sealed box 1, reducing the oxygen content in the powder removal environment and having high safety.

[0085] As Figure 4 shown, in some embodiments, the sealed box 1 further includes a first driving unit 15, and the first driving unit 15 is used to drive the sealing door 12 to move.

[0086] Optionally, the first driving unit 15 includes a first driver 151, a gear 152, and a rack 153. The first driver 151 can be a motor. The gear 152 is disposed at the driving end of the first driver 151, and the rack 153 is disposed on the sealing door 12. The gear 152 is adapted to the rack 153. The first driver 151 can drive the sealing door 12 to slide up and down to open or close the opening of the box body 11.

[0087] As Figure 5 shown, a guide rail groove 16 is provided outside the opening of the box body 11. The guide rail groove 16 is L-shaped. The sealing door 12 is slidably disposed in the guide rail groove 16, and the guide rail groove 16 can guide the up and down sliding of the sealing door 12.

[0088] As Figure 1 shown, in some embodiments, the conveying mechanism 2 includes: a first guide rail 21, a loading slide 22, and a second driving unit (not shown in the figure). A support platform 14 is provided outside the box body 1. One end of the first guide rail 21 is disposed on the support platform 14, and the other end of the first guide rail 21 passes through the opening of the box body 11 and extends into the sealing cavity 111. The loading slide 22 is slidably disposed on the first guide rail 21. The second driving unit is used to drive the loading slide 22 to slide along the first guide rail 21. Optionally, the second driving unit is a motor.

[0089] In some embodiments, a retaining bar is provided at the edge of the top surface of the loading slide 22 to limit the material tank 200 on the loading slide 22.

[0090] As Figure 6 and Figure 7 shown, in some embodiments, the dust removal mechanism 3 includes: a second guide rail 31, a slider 32, a telescopic rod 33, an electromagnetic coil 34, a third driving unit (not shown in the figure), a fourth driving unit 35, and a carrier 36.

[0091] The second guide rail 31 is horizontally disposed at the top of the inner wall of the box body 11. The slider 32 is adapted to the second guide rail 31, and the slider 32 is slidably disposed on the second guide rail 31. The third driving unit is used to drive the slider 32 to slide. For example, the third driving unit is a motor. The top end of the telescopic rod 33 is connected to the slider 32. A carrier 36 is disposed on the slider 32, and the telescopic rod 33 is connected to the carrier 36. The telescopic rod 33 can be telescoped in the vertical direction. The electromagnetic coil 34 is disposed at the bottom end of the telescopic rod 33, and the electromagnetic coil 34 can generate magnetism after being energized. The fourth driving unit 35 is disposed on the slider 32. For example, the fourth driving unit 35 is connected to the carrier 36, and the fourth driving unit 35 is used to drive the telescopic rod 33 to be telescoped.

[0092] After the material tank 200 enters the sealing cavity 111 of the box body 11 and moves to a preset position, the fourth driving unit 35 drives the telescopic rod 33 to extend, and the electromagnetic coil 34 enters the material tank 200. After the electromagnetic coil 34 is energized, it adsorbs the waste powder in the material tank 200.

[0093] After the electromagnetic coil 34 adsorbs the waste powder, the fourth driving unit 35 drives the telescopic rod 33 to retract. The slider 32 drives the telescopic rod 33 and the electromagnetic coil 34 to move above the collection mechanism 4. The fourth driving unit 35 drives the telescopic rod 33 to extend. After the electromagnetic coil 34 moves down to a preset position, the power is cut off, and the waste powder falls to the collection mechanism 4 under the action of gravity.

[0094] In some embodiments, the telescopic rod 33 includes a plurality of hollow rod bodies 331 nested in sequence, and the outermost rod body is connected to the carrier 36. The fourth driving unit 35 includes: a fourth driver 351, a wire reel 352, and a first rope 353. The fourth driver 351 is arranged on the carrier 36 on the slider 32. Optionally, the fourth driver 351 is a motor. The wire reel 352 is arranged at the driving end of the fourth driver 351. The first rope 353 is wound around the wire reel 352, and the end of the first rope 353 is connected to the innermost rod body. Optionally, the first rope 353 penetrates into the telescopic rod 33, and the first rope 353 is connected to the inner wall of the innermost rod body.

[0095] When the telescopic rod 33 extends, the fourth driver 351 drives the wire reel 352 to rotate, releases the wound first rope 353, and the telescopic rod 33 extends under the action of gravity. When the telescopic rod 33 retracts, the fourth driver 351 drives the wire reel 352 to rotate in the reverse direction, retracts the first rope 353, and the first rope 353 exerts a pulling force on the innermost rod body, and the telescopic rod 33 retracts.

[0096] The telescopic rod 33 drives the electromagnetic coil 34 to move down into the funnel 43. The electromagnetic coil 34 is powered off, and the waste powder on the electromagnetic coil 34 falls into the funnel 43 under the action of gravity. The control valve 42 is opened, and the waste powder in the funnel 43 falls into the waste bin 41. After the waste powder falls into the waste bin 41, the control valve 42 is closed.

[0097] As Figure 8 、 Figure 9 and Figure 10 shown, in some embodiments, the innermost rod body 331a of the telescopic rod 33 includes: a first sub-rod 332, a bellows 333, and a second sub-rod 334. The first sub-rod 332 is nested with the outer rod body 331b of the innermost rod body, and the bottom end of the first sub-rod 332 extends out of the outer rod body 331b of the innermost rod body. The bellows 333 is a flexible tube, and the top end of the bellows 333 is connected to the bottom end of the first sub-rod 332. The second sub-rod 334 is connected to the bottom end of the bellows 333, and the electromagnetic coil 34 is arranged at the bottom end of the second sub-rod 334.

[0098] The powder removing mechanism 3 further includes: a rotary driver 37 and a second rope 38. The top end of the second rope 38 is connected to the carrier 36, and the bottom end of the second rope 38 is connected to the outer wall of the second sub-bar 334. The length of the second rope 38 is less than the length of the telescopic rod 33 when it extends and is in a vertical state. Optionally, the second rope 38 penetrates into the telescopic rod 33. In another implementation, the second rope 38 is located outside the telescopic rod 33. When the telescopic rod 33 fully extends, the second rope 38 exerts a pulling force on the second sub-bar 334, and the second sub-bar 334 tilts relative to the first sub-bar 332. For example, the second sub-bar 334 is pulled to the horizontal direction. When the telescopic rod 33 retracts, the pulling force of the second rope 38 on the second sub-bar 334 disappears, and the second sub-bar 334 returns to the vertical direction. When the second sub-bar 334 tilts, the electromagnetic coil 34 moves along with the second sub-bar 334. The length of the second sub-bar 334 is set according to requirements. For example, the length of the second sub-bar 334 is 3 cm.

[0099] The rotary driver 37 is arranged on the slider 32, and the carrier 36 is arranged at the output end of the rotary driver 37. Optionally, the rotary driver 37 is a rotary cylinder.

[0100] The aperture of the feed inlet of the material tank 200 is relatively small. When the second sub-bar 334 enters or exits the material tank 200, the second sub-bar 334 is in the vertical direction, which is convenient for the second sub-bar 334 to pass through the feed inlet of the material tank 200.

[0101] When the second sub-bar 334 enters the material tank 200 and the telescopic rod 33 fully extends, the second rope 38 exerts a pulling force on the second sub-bar 334, and the second sub-bar 334 tilts relative to the first sub-bar 332. The electromagnetic coil 34 moves along with the second sub-bar 334. The rotary driver 37 drives the telescopic rod 33 and the electromagnetic coil 34 to rotate, which can increase the sweeping area of the electromagnetic coil 34 to better adsorb the waste powder.

[0102] When the telescopic rod 33 fully extends, the distance between the electromagnetic coil 34 and the bottom of the material tank 200 is set according to requirements.

[0103] Optionally, the material tank 200 is placed before the conveying mechanism 2. Use a tool, such as a wooden mallet, to strike the material tank 200 to vibrate the floating powder on the side wall of the material tank 200 to the bottom of the material tank 200.

[0104] In some embodiments, a protective cover 39 is arranged outside the electromagnetic coil 34. After the electromagnetic coil 34 is powered off, the electromagnetic coil 34 may have residual magnetism or static electricity, resulting in incomplete shedding of the waste powder on the electromagnetic coil 34. Arranging the protective cover 39 on the electromagnetic coil 34 can reduce the interference of the residual magnetism or static electricity on the shedding of the waste powder. Optionally, the protective cover 39 is made of rubber and covers the outside of the electromagnetic coil 34, and the wall thickness of the protective cover 39 is 0.5 - 1 cm.

[0105] Such asFigure 11 As shown, an embodiment of the present application provides a control method for the above-mentioned powder removal device 100, including:

[0106] S1. Place the material tank 200 on the conveying mechanism 2. For example, place the material tank 200 on the loading slide 22.

[0107] S2. Use the conveying mechanism 2 to send the material tank 200 into the sealing box 1, the sealing door 12 closes at least part of the opening of the box body 11, and control the first inflation valve 13 to convey inert gas into the box body 11.

[0108] For example, the loading slide 22 drives the material tank 200 into the box body 11, the sealing door 12 moves downward to close the opening of the box body 11, and the first inflation valve 13 conveys inert gas into the box body 11 to reduce the oxygen content in the sealing cavity 111.

[0109] S3. Control the powder removal mechanism 3 to adsorb the waste powder in the material tank 200 and convey the waste powder to the collection mechanism 4.

[0110] S4. Use the collection mechanism 4 to collect the waste powder.

[0111] In some embodiments, step S3, controlling the powder mechanism to adsorb the waste powder in the material tank and convey the waste powder to the collection mechanism, includes:

[0112] Control the fourth driver 351 to drive the wire reel 352 to rotate, release the wound first rope 353, and the telescopic rod 33 extends under the action of gravity;

[0113] The electromagnetic coil 34 enters the material tank 200, the electromagnetic coil 34 is energized, and the electromagnetic coil 34 adsorbs the waste powder in the material tank 200;

[0114] Control the fourth driver 351 to drive the wire reel 352 to rotate in the reverse direction, retract the first rope 353, and the first rope 353 pulls the telescopic rod 33 to retract;

[0115] Control the slider 32 to drive the telescopic rod 33 and the electromagnetic coil 34 to move above the collection mechanism 4, the fourth driving unit 35 drives the telescopic rod 33 to extend, and the electromagnetic coil 34 is powered off after moving to a preset position, so that the waste powder falls to the collection mechanism 4 under the action of gravity.

[0116] In some embodiments, step S4, using the collection mechanism 4 to collect the waste powder includes:

[0117] After the waste powder falls into the funnel 43, open the second inflation valve 44 to convey inert gas into the waste bucket 41;

[0118] Open the control valve 42 so that the waste powder in the funnel 43 falls into the waste bucket 41;

[0119] Close the control valve 42 and close the second inflation valve 44.

[0120] The powder removal device 100 further includes a controller, and the controller can be a pre-existing controller. The first driver, the second drive unit, the third drive unit, the fourth driver, the first inflation valve, and the second inflation valve are all communicatively connected to the controller, and the controller controls the operation of each driver and inflation valve.

[0121] The embodiments of the present application have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application. Therefore, any changes or deformations made by those skilled in the art based on the idea of the present application, within the specific implementation manner and application scope of the present application, all fall within the protection scope of the present application. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A powder removal device, characterized in that, Comprising: A sealed box, comprising: A box body provided with an opening; A sealed door capable of closing at least part of the opening of the box body; A first inflation valve provided on the box body for conveying gas into the box body; A conveying mechanism capable of feeding a material tank into the sealed box; A powder removing mechanism provided on the box body for adsorbing waste powder in the material tank; A collecting mechanism provided on the box body, the powder removing mechanism can convey the waste powder to the collecting mechanism, and the collecting mechanism is used for collecting the waste powder. The collecting mechanism includes: A waste bucket provided with a feed inlet; A control valve provided at the feed inlet for controlling the opening and closing of the feed inlet; A funnel connected to the control valve; A second inflation valve provided on the waste bucket, and the second inflation valve is used for conveying gas into the waste bucket; An overflow valve provided on the waste bucket.

2. The dust removing device according to claim 1, wherein The sealed box further includes a first driving unit for driving the sealed door to move.

3. The dust removal device according to claim 1, characterized in that, The conveying mechanism includes: A first guide rail with one end extending into the box body; A material-carrying sliding table slidably arranged on the first guide rail; A second driving unit for driving the material-carrying sliding table to slide.

4. The dust removal device according to claim 3, characterized in that, A retaining strip is arranged at the edge of the material-carrying sliding table.

5. The dust removal device according to claim 1, wherein, The powder removing mechanism includes: A second guide rail provided on the top of the box body; A slider slidably arranged on the second guide rail; A carrier provided on the slider; A telescopic rod with one end connected to the carrier; An electromagnetic coil provided at the other end of the telescopic rod; A third driving unit for driving the slider to slide; A fourth driving unit provided on the carrier for driving the telescopic rod to extend and retract.

6. The dust removal device according to claim 5, wherein, The telescopic rod includes a plurality of rod bodies nested in sequence. The fourth driving unit includes: A fourth driver provided on the carrier; A wire reel provided at the driving end of the fourth driver; A first rope wound around the wire reel, and the end of the first rope is connected to the innermost rod body among the plurality of rod bodies.

7. The dust removal device according to claim 6, characterized in that, The innermost rod body of the telescopic rod includes: A first sub-rod nested with the outer rod body of the innermost rod body; A corrugated pipe connecting the end of the first sub-rod; A second sub-rod connecting the corrugated pipe, and the electromagnetic coil is provided on the second sub-rod; The powder removing mechanism further includes: A second rope with one end connected to the carrier and the other end connected to the second sub-rod. When the telescopic rod extends, the second rope can make the second sub-rod tilt relative to the first sub-rod; A rotary driver provided on the slider, and the carrier is connected to the rotary driver.

8. A control method for the powder removing device according to claim 1, characterized in that Comprising: Placing the material tank on the conveying mechanism; Using the conveying mechanism to feed the material tank into the sealed box, the sealed door closes at least part of the opening of the box body, and controlling the first inflation valve to convey inert gas into the box body; Controlling the powder removing mechanism to adsorb the waste powder in the material tank and convey the waste powder to the collecting mechanism; Using the collecting mechanism to collect the waste powder.

9. The method according to claim 8, characterized in that Controlling the powder removing mechanism to adsorb the waste powder in the material tank and convey the waste powder to the collecting mechanism, including: Control the telescopic rod of the powder removal mechanism to extend, and energize the electromagnetic coil of the powder removal mechanism to adsorb the waste powder in the material tank; Control the telescopic rod to retract; Control the slider of the powder removal mechanism to drive the telescopic rod and the electromagnetic coil to move above the collection mechanism, extend the telescopic rod, and cut off the power supply of the electromagnetic coil so that the waste powder falls into the collection mechanism.

10. The method according to claim 8, wherein Collecting the waste powder by using the collection mechanism includes: Convey inert gas into the waste bucket of the collection mechanism; Open the feed inlet of the waste bucket so that the waste powder in the funnel of the collection mechanism falls into the waste bucket.

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