A device for collecting magnesium chips and magnesium powder

Abstract

The present invention relates to the technical field of filtration and collection, and particularly relates to a device for collecting magnesium chips and magnesium powder, which comprises a housing, a filter screen and a switching component; the filter screen is in a cylindrical shape formed by sequentially hinging a plurality of filter plates, and the hinge axes of adjacent two filter plates are alternately the first axis and the second axis in sequence; the switching component comprises a fixed plate and a movable plate, and the fixed plate is fixed inside the housing; a ring groove coaxial with the axis of the filter screen is formed on the fixed plate, and a plurality of sliding grooves distributed radially around the axis of the filter screen are formed; a plurality of first axes are all slidably installed in the ring groove; the movable plate is rotatably arranged inside the housing, and a plurality of arc-shaped grooves distributed around the axis of the filter screen are formed on the movable plate; each second axis passes through an arc-shaped groove and is slidably matched with a sliding groove. When the movable plate reciprocally rotates, the arc-shaped grooves are used to drive the second axes to reciprocally move along the sliding grooves, and the moving directions of adjacent two second axes in the corresponding sliding grooves are opposite, so that adjacent two filter plates reciprocally approach and move away from each other, prompting the magnesium chips and magnesium powder attached to the filter plates to fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration and collection, and particularly relates to a device for collecting magnesium chips and magnesium powder. Background Art

[0002] Magnesium powder is an important raw material for metal powder, which is widely used in fields such as metallurgy, chemical industry, electronics, ceramics, rubber, plastics, etc. In the production process of magnesium powder, there are steps such as dissolution, precipitation, filtration, drying, etc. During the production process, some magnesium powder will be dispersed in the gas and is easily discharged with the gas when discharging waste gas, which will not only cause environmental pollution but also result in waste of magnesium powder. Therefore, when discharging waste gas, it is necessary to collect the magnesium powder in the gas. In the prior art, the Chinese patent with the publication number CN217773617U discloses a device for collecting magnesium chips and magnesium powder, which filters magnesium chips and magnesium powder through a secondary filter to improve the filtration efficiency, and nitrogen is introduced to keep the collection process in a safe environment all the time. And the magnesium powder collected by the filter needs to be further separated from the filter to complete the collection of magnesium powder. Summary of the Invention

[0003] The present invention provides a device for collecting magnesium chips and magnesium powder to collect the magnesium powder on the filter.

[0004] The following technical solutions are adopted for a device for collecting magnesium chips and magnesium powder of the present invention:

[0005] A device for collecting magnesium chips and magnesium powder includes a housing, a filter screen, and a switching assembly; the filter screen is arranged inside the housing and is in a cylindrical shape formed by sequentially hinging a plurality of filter plates, and the hinge axes of adjacent two filter plates are parallel to the axis of the cylindrical shape; along the circumference of the filter screen, the hinge axes of adjacent two filter plates are alternately the first axis and the second axis in sequence; the switching assembly includes a fixed plate and a movable plate, the fixed plate is fixed inside the housing and is perpendicular to the axis of the filter screen; a ring groove coaxial with the axis of the filter screen is formed on the fixed plate, and a plurality of sliding grooves radially and evenly distributed around the axis of the filter screen and all located inside the ring groove are formed on the fixed plate; a plurality of first axes of the filter screen are all slidably installed in the ring groove; the movable plate is located on the side of the fixed plate close to the filter screen, the movable plate is rotatably arranged inside the housing and is coaxial with the axis of the filter cylinder; a plurality of arc-shaped grooves circumferentially and evenly distributed around its rotation axis are formed on the movable plate, and the plurality of arc-shaped grooves are connected end to end in sequence and are not communicated, forming a wavy path around the circumference of the movable plate, and each arc-shaped groove is a section between the wave crest and the wave trough of the wavy shape; the second axis of the filter screen passes through an arc-shaped groove and is slidably matched with a sliding groove; when the movable plate reciprocally rotates relative to the fixed plate, the two filter plates of the filter screen hinged to the second axis alternately approach and move away from each other.

[0006] Further, a partition is provided inside the outer shell. The partition divides the inside of the outer shell into a collection chamber and an air outlet chamber. A through hole communicating the collection chamber and the air outlet chamber is provided on the partition; the filter screen is located in the collection chamber, and the inner circle of the filter screen communicates with the air outlet chamber through the through hole; the collection chamber is used to receive the gas with magnesium chips and magnesium powder, and the gas is discharged from the air outlet chamber after being filtered by the filter screen.

[0007] Further, a magnesium chip and magnesium powder collection device further includes at least one liquid spraying pipe. The at least one liquid spraying pipe is located in the collection chamber and between the filter screen and the outer shell. The liquid spraying pipe is rotatably installed in the outer shell around the axis of the filter screen, and a plurality of liquid spraying holes distributed along the axis of the filter screen are provided on the liquid spraying pipe. The liquid spraying holes face the filter screen and are used to spray a solution that is volatile and does not easily react with magnesium powder onto the filter screen.

[0008] Further, a gear ring is rotatably installed on the partition. The gear ring is sleeved outside the filter screen and is coaxial with the filter screen. At least one liquid spraying pipe is installed on the gear ring; a first motor is also fixedly installed on the partition. A gear meshing with the gear ring is installed on the output shaft of the first motor. The first motor drives the gear ring to rotate reciprocally through the gear, and further drives the liquid spraying pipe to rotate reciprocally around the filter screen.

[0009] Further, a magnesium chip and magnesium powder collection device further includes a backwashing device. The backwashing device includes an air pipe and an air pump. The air pipe is located inside the inner circle of the filter screen and is connected to the air pump located outside the outer shell through a pipeline; the air pipe is parallel to the axis of the filter screen, and a plurality of air holes distributed along the axis of the filter screen are provided on the air pipe; the air pump can blow air from the inside to the outside of the filter screen through the air pipe.

[0010] Further, the air pipe is rotatably connected to the pipeline, and the air pipe is connected to the movable plate; a second motor is fixedly installed inside the outer shell. The output shaft of the second motor is connected to the air pipe through a transmission belt for transmission. The second motor drives the movable plate to rotate reciprocally through the air pipe.

[0011] Further, a magnesium chip and magnesium powder collection device further includes a nitrogen generator for generating nitrogen and using nitrogen to assist the gas with magnesium powder to enter the collection chamber.

[0012] Further, a detachable hopper is provided at the bottom of the collection chamber inside the outer shell. The hopper receives the magnesium chips and magnesium powder that fall from the filter screen.

[0013] Further, the filter plate is made of a flexible material, and adjacent two filter plates are connected by rods.

[0014] Further, at least two sets of switching components are provided, which are respectively located at both ends of the filter screen in the axial direction, and the fixed plate and the movable plate of the switching component located at one end of the filter screen close to the partition are both annular, so that the inner circle of the filter screen communicates with the through hole.

[0015] The beneficial effects of the present invention are as follows: During the reciprocating rotation of the movable plate of the magnesium chip and magnesium powder collection device of the present invention, the arc-shaped groove drives the second shaft to reciprocate along the sliding groove, and the moving directions of two adjacent second shafts in the corresponding sliding grooves are opposite, so that two adjacent filter plates reciprocate closer to and farther away from each other, prompting the magnesium chips and magnesium powder attached to the filter plates to fall off.

[0016] Furthermore, by arranging a liquid spraying pipe to spray a solution that is volatile and does not easily react with magnesium powder onto the filter mesh, it can cool the interior of the outer shell during volatilization and reduce the dust in the outer shell; and the liquid solution sprayed on the filter mesh can prompt the magnesium chips and magnesium powder to agglomerate, and thus it is easier to fall off when the filter mesh deforms.

[0017] Furthermore, by arranging a backwashing device to blow air from the inside to the outside of the filter mesh, it can further prompt the agglomerated magnesium chips and magnesium powder on the filter mesh to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a magnesium chip and magnesium powder collection device of the present invention;

[0020] Figure 2 It is Figure 1 a side view;

[0021] Figure 3 It is Figure 2 a sectional view taken along the line B-B in

[0022] Figure 4 It is Figure 2 a sectional view taken along the line A-A in

[0023] Figure 5 It is Figure 4 an enlarged view at D in

[0024] Figure 6 It is Figure 4 an enlarged view at E in

[0025] Figure 7 It is Figure 2 a sectional view taken along the line C-C in

[0026] Figure 8 It is Figure 7 an enlarged view at F in

[0027] Figure 9 Another state schematic diagram of the filter screen in the embodiment of a magnesium chip and magnesium powder collection device of the present invention;

[0028] Figure 10 Structural schematic diagram of the fixing plate in the embodiment of a magnesium chip and magnesium powder collection device of the present invention.

[0029] In the figure: 100, housing; 110, partition; 120, gear ring; 130, first motor; 140, gear; 150, second motor; 160, hopper; 170, air inlet; 180, air outlet; 190, air extraction device; 200, filter screen; 210, first shaft; 220, second shaft; 220a, state shaft one; 220b, state shaft two; 300, switching component; 310, fixing plate; 311, annular groove; 312, sliding groove; 320, movable plate; 321, arc-shaped groove; 400, liquid spraying pipe; 510, air pipe; 520, air pump; 530, pipeline; 600, nitrogen generator. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] An embodiment of a magnesium chip and magnesium powder collection device of the present invention, as Figures 1 to 10 shown, includes a housing 100, a filter screen 200 and a switching component 300.

[0032] The filter screen 200 is arranged inside the housing 100, and is in a cylindrical shape formed by sequentially hinging a plurality of filter plates, and the hinge axis of two adjacent filter plates is parallel to the axis of the cylindrical shape; along the circumferential direction of the filter screen 200, the hinge axes of two adjacent filter plates are alternately the first shaft 210 and the second shaft 220 in sequence.

[0033] The switching component 300 includes a fixed plate 310 and a movable plate 320. The fixed plate 310 is fixed inside the housing 100 and perpendicular to the axis of the filter screen 200. A ring groove 311 coaxial with the axis of the filter screen 200 is formed on the fixed plate 310, and a plurality of sliding grooves 312 radially and evenly distributed around the axis of the filter screen 200 and located inside the inner circle of the ring groove 311 are formed on the fixed plate 310. A plurality of first shafts 210 of the filter screen 200 are all slidably installed in the ring groove 311. The movable plate 320 is located on the side of the fixed plate 310 close to the filter screen 200. The movable plate 320 is rotatably arranged inside the housing 100 and coaxial with the axis of the filter screen 200. A plurality of arc-shaped grooves 321 circumferentially and evenly distributed around its rotation axis are formed on the movable plate 320. The plurality of arc-shaped grooves 321 are connected end to end in sequence and are not connected in the circumferential direction of the movable plate 320, forming a wavy path around the circumference of the movable plate 320, and the wave crest of the wavy shape is farther from the center of the movable plate 320 than the wave trough. Each arc-shaped groove 321 is a section between the wave crest and the wave trough of the wavy shape. The second shaft 220 of the filter screen 200 passes through an arc-shaped groove 321 and is slidably matched with a sliding groove 312. When the movable plate 320 reciprocally rotates relative to the fixed plate 310, the two filter plates of the filter screen 200 hinged to the second shaft 220 approach and move away from each other alternately.

[0034] Specifically, when the movable plate 320 rotates forward relative to the fixed plate 310, among two adjacent second shafts 220, one of the second shafts 220 moves relative to the arc-shaped groove 321 from the wave crest to the wave trough direction under the restriction of the sliding groove 312. This second shaft 220 is defined as the first state shaft 220a, as Figure 8 shown. The other second shaft 220 moves relative to the arc-shaped groove 321 where it is located from the wave trough to the wave crest direction under the restriction of the sliding groove 312. This second shaft 220 is defined as the second state shaft 220b, as Figure 8 shown. During the process of the first state shaft 220a moving towards the direction close to the wave trough, it drives the two filter plates hinged to it to approach each other. During the process of the second state shaft 220b moving towards the direction close to the wave crest, it drives the two filter plates hinged to it to move away from each other. Until the first state shaft 220a moves to the wave trough and the second state shaft 220b moves to the wave crest, as Figure 9 shown, the included angle between the two filter plates hinged to the first state shaft 220a is reduced to the minimum, and the included angle between the two filter plates hinged to the second state shaft 220b is stretched to the maximum. Then the movable plate 320 rotates reversely relative to the fixed plate 310, so that the first state shaft 220a moves from the wave trough to the wave crest direction, driving the two filter plates hinged to it to move away from each other. The second state shaft 220b moves from the wave crest to the wave trough direction, driving the two filter plates hinged to it to approach each other. Until the first state shaft 220a relatively moves to the wave crest of the arc-shaped groove 321 where it is located and the second state shaft 220b relatively moves to the wave trough of the arc-shaped groove 321 where it is located, the movable plate 320 rotates forward again.

[0035] During the reciprocating rotation of the movable plate 320, the arc-shaped groove 321 drives the second shaft 220 to reciprocate along the sliding groove 312, and the moving directions of two adjacent second shafts 220 in the corresponding sliding grooves 312 are opposite, so that two adjacent filter plates approach and move away from each other reciprocally, promoting the magnesium chips and magnesium powder attached to the filter plates to fall off. Preferably, the filter plate is made of a flexible material, such as a cloth bag. Two adjacent filter plates are connected by a rod. The rod serves as the first shaft 210 and the second shaft 220 of the filter screen 200. Two adjacent second shafts 220 moving to the trough will straighten and flatten the two filter plates connected by the second shaft 220 located between these two second shafts 220 and moving to the crest, accelerating the falling off of the magnesium chips and magnesium powder on the filter plates. In some other embodiments, the filter plate can also be made of a rigid material, and the jitter generated when the filter screen 200 deforms promotes the magnesium chips and magnesium powder on the filter plates to fall off.

[0036] In this embodiment, a partition 110 is provided in the housing 100. The partition 110 divides the interior of the housing 100 into a collection chamber and an air outlet chamber. A through hole communicating the collection chamber and the air outlet chamber is opened on the partition 110. The filter screen 200 is located in the collection chamber, and the inner circle of the filter screen 200 communicates with the air outlet chamber through the through hole; the collection chamber is used to receive the gas with magnesium chips and magnesium powder. The gas is filtered by the filter screen 200 and discharged from the air outlet chamber, and the magnesium chips and magnesium powder are intercepted on the outer surface of the filter screen 200.

[0037] In this embodiment, a magnesium chip and magnesium powder collection device further includes at least one liquid spraying pipe 400. At least one liquid spraying pipe 400 is located in the collection chamber and between the filter screen 200 and the housing 100. The liquid spraying pipe 400 is rotatably installed in the housing 100 around the axis of the filter screen 200, and a plurality of liquid spraying holes distributed along the axis of the filter screen 200 are opened on the liquid spraying pipe 400. The liquid spraying holes face the filter screen 200 and are used to spray a solution that is volatile and not easy to react with magnesium powder on the filter screen 200. Specifically, a hose (not shown in the figure) extending outside the housing 100 is connected to the liquid spraying pipe 400 for receiving the solution to be sprayed outside. Due to the special properties of magnesium powder, anhydrous ethanol can be selected as the solution. It is not easy to react with magnesium powder, can quickly volatilize to cool the interior of the housing 100, and reduce the dust in the housing 100 when the filter screen 200 deforms; anhydrous ethanol is in a liquid state, and spraying it on the filter screen 200 can promote the magnesium chips and magnesium powder to agglomerate, and thus it is easier to fall off when the filter screen 200 deforms.

[0038] In this embodiment, a gear ring 120 is rotatably mounted on the partition plate 110. The gear ring 120 is sleeved outside the filter screen 200 and coaxial with the filter screen 200. At least one liquid spraying pipe 400 is mounted on the gear ring 120. A first motor 130 is fixedly mounted on the partition plate 110. A gear 140 meshing with the gear ring 120 is mounted on the output shaft of the first motor 130. The first motor 130 drives the gear ring 120 to rotate reciprocally through the gear 140, and then drives the liquid spraying pipe 400 to rotate reciprocally around the filter screen 200. When there are multiple liquid spraying pipes 400, the multiple liquid spraying pipes 400 are all fixedly mounted on the gear ring 120 and are evenly distributed circumferentially around the gear ring 120. Moreover, the angle of the reciprocal rotation of the gear ring 120 enables the rotation range of the multiple liquid spraying pipes 400 to cover the entire circle of the filter screen 200, so that the solution can fully contact the magnesium chips and magnesium powder on the filter screen 200.

[0039] In this embodiment, a magnesium chip and magnesium powder collection device further includes a backwashing device. The backwashing device includes an air pipe 510 and an air pump 520. The air pipe 510 is located inside the inner circle of the filter screen 200 and is communicated with the air pump 520 located outside the housing 100 through a pipeline 530. The air pipe 510 is parallel to the axis of the filter screen 200, and a plurality of air holes distributed along the axis of the filter screen 200 are formed in the air pipe 510. The air pump 520 can blow air from the inside to the outside of the filter screen 200 through the air pipe 510 to backwash the magnesium powder attached to the outside of the filter screen 200.

[0040] In this embodiment, the air pipe 510 is rotatably connected to the pipeline 530, and the air pipe 510 is connected to the movable plate 320. A second motor 150 is fixedly mounted inside the housing 100. The output shaft of the second motor 150 is connected to the air pipe 510 through a transmission belt for transmission. The second motor 150 drives the movable plate 320 to rotate reciprocally through the air pipe 510, and the air pipe 510 can increase the air blowing range of the filter screen 200 when rotating.

[0041] In this embodiment, a magnesium chip and magnesium powder collection device further includes a nitrogen generator 600, which is used to generate nitrogen and use the nitrogen to assist the gas with magnesium powder to enter the collection chamber. Moreover, the nitrogen generated by the nitrogen generator 600 can also be communicated with the air pump 520 to backwash the filter screen 200.

[0042] In this embodiment, a detachable hopper 160 is provided at the bottom of the housing 100 inside the collection chamber. The hopper 160 receives the magnesium chips and magnesium powder falling from the filter screen 200.

[0043] In this embodiment, an air inlet 170 and an air outlet 180 are formed on the outer shell 100. The air inlet 170 is communicated with the collection chamber and is used to receive the gas containing magnesium chips and magnesium powder. Moreover, an air extraction device 190 is communicated with the air inlet 170. The air extraction device 190 extracts the gas containing magnesium powder in the previous process to the collection chamber. The air outlet 180 is communicated with the air outlet chamber, and a distillation device can be externally connected to recover the absolute ethanol carried in the volatilized gas.

[0044] In this embodiment, the axis of the filter screen 200 is vertically arranged, and the collection chamber is located below the air outlet chamber. At least two groups of switching components 300 are provided. Two of the switching components 300 are respectively located at both ends of the filter screen 200 in the axial direction. The fixed plate 310 and the movable plate 320 of the switching component 300 close to one end of the partition 110 of the filter screen 200 block the inner ring at the lower end of the filter screen 200, and both the fixed plate 310 and the movable plate 320 of the switching component 300 close to one end of the partition 110 of the filter screen 200 are annular, so that the upper end of the inner ring of the filter screen 200 is communicated with the through hole. To prevent magnesium chips and magnesium powder from falling into the annular groove 311, the sliding groove 312 and the arc groove 321 and affecting the movement of the first shaft 210 and the second shaft 220, a telescopic and deformable dust-proof cover (not shown in the figure) that can cover the upper part of the annular groove 311, the sliding groove 312 and the arc groove 321 is connected between the filter plate and the movable plate 320 and the fixed plate 310.

[0045] When a magnesium chip and magnesium powder collection device of the present invention is in use, the gas with magnesium chips and magnesium powder enters through the air inlet 170. After being filtered by the filter screen 200, the magnesium chips and magnesium powder remain on the outer surface of the filter screen 200. The gas enters the inner ring of the filter screen 200 and then passes through the through holes into the air outlet chamber and is discharged from the air outlet 180. As the working time of the filter screen 200 increases, the amount of magnesium chips and magnesium powder accumulated on the outside of the filter screen 200 increases. When it is necessary to clean the filter screen 200, the second motor 150 is started to drive the air pipe 510 to rotate reciprocally, thereby driving the movable plate 320 to rotate reciprocally. At the same time, the first motor 130 is started to drive the liquid spraying pipe 400 to rotate through the gear ring 120. The liquid spraying pipe 400 sprays the solution on the outer ring of the filter screen 200, prompting the magnesium chips and magnesium powder on the outside of the filter screen 200 to agglomerate, and the sprayed solution volatilizes and is discharged with the subsequent incoming gas. The reciprocating rotation of the movable plate 320 drives the second shaft 220 to reciprocate in the sliding groove 312, and any two filter plates forming the filter screen 200 continuously approach and move away from each other, prompting the agglomerated magnesium chips and magnesium powder to fall off, and the fallen magnesium chips and magnesium powder fall into the hopper 160. As the agglomeration of magnesium chips and magnesium powder outside the filter screen 200 increases, the degree of blockage of the filter screen 200 increases. The gas supply into the housing 100 is stopped, and the air pump 520 is started to blow air from the inside to the outside of the filter screen 200 through the air pipe 510, further accelerating the falling of the agglomerated magnesium chips and magnesium powder. After backwashing for a period of time, the air pump 520 is turned off, and the gas is continuously supplied into the housing 100 to collect magnesium chips and magnesium powder. Among them, the deformation of the filter screen 200 and the spraying of the filter screen 200 by the liquid spraying pipe 400 can be carried out synchronously and are automatically started after the filter screen 200 has worked for a period of time. The backwashing device for the filter screen 200 can be started after a period of time when the liquid spraying pipe 400 starts to spray the filter screen 200, and then they are closed synchronously, or the backwashing device is closed first, and then the deformation of the filter screen 200 and the spraying of the filter screen 200 by the liquid spraying pipe 400 are stopped.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnesium chips and magnesium powder collecting device, characterized in that: Includes housing, filter and switching assembly; The filter screen is arranged in the housing and is in the shape of a cylinder formed by hingedly connecting a plurality of filter plates in sequence, and the hinge axes of two adjacent filter plates are parallel to the axis of the cylinder; along the circumference of the filter screen, the hinge axes of two adjacent filter plates are alternately the first axis and the second axis in sequence; The switching assembly comprises a fixed plate and a movable plate, and the switching assembly is provided with at least two groups, which are respectively located at two ends of the filter screen in the axial direction, and the fixed plate and the movable plate of the switching assembly located at one end of the filter screen close to the partition plate are both annular, and the fixed plate is fixed in the shell and is perpendicular to the axis of the filter screen; an annular groove coaxial with the axis of the filter screen is provided on the fixed plate, and a plurality of slide grooves radially and evenly distributed around the axis of the filter screen and all located in the inner circle of the annular groove are provided on the fixed plate; a plurality of first axes of the filter screen are slidably mounted in the annular groove; the movable plate is located on the side of the fixed plate close to the filter screen, and the movable plate is rotatably arranged in the shell and coaxial with the axis of the filter cartridge; a plurality of arc grooves uniformly distributed circumferentially around the rotation axis thereof are provided on the movable plate, and the plurality of arc grooves are connected end to end in sequence and are not connected, forming a wavy path around the circumference of the movable plate, and each arc groove is a section between adjacent wave crests and troughs of the wave; the second axis of the filter screen passes through an arc groove and is slidably matched with a slide groove; when the movable plate reciprocates relative to the fixed plate, the two filter plates of the filter screen hinged to the second axis alternately abut and move away from each other; The invention also includes at least one liquid spraying pipe, which is located between the filter screen and the housing, and is installed in the housing by rotating around the axis of the filter screen. The liquid spraying pipe is provided with a plurality of liquid spraying holes distributed along the axis of the filter screen, and the liquid spraying holes face the filter screen, and are used to spray a volatile solution that is not easy to react with magnesium powder onto the filter screen, so as to promote the agglomeration of magnesium chips and magnesium powder outside the filter screen. It also includes a recoil device, which includes an air pipe and an air pump. The air pipe is located in the inner circle of the filter and is connected to the air pump located outside the outer shell through a pipeline. The air pipe is parallel to the axis of the filter and is provided with a plurality of air holes distributed along the axis of the filter. The air pump can blow air from the inside to the outside of the filter through the air pipe to cause the magnesium chips and powder agglomerated on the outside of the filter to fall off.

2. A magnesium chips and magnesium powder collecting device according to claim 1, characterized in that: A partition is arranged inside the shell, which divides the shell into a collecting chamber and an air outlet chamber. A through hole connecting the collecting chamber and the air outlet chamber is opened on the partition; the filter is located in the collecting chamber, and the inner circle of the filter is connected with the air outlet chamber through the through hole; the collecting chamber is used to receive gas containing magnesium chips and magnesium powder, and the gas is discharged from the air outlet chamber after being filtered by the filter.

3. A magnesium chips and magnesium powder collecting device according to claim 2, characterized in that: At least one liquid spray pipe is located in the collecting chamber.

4. A magnesium chips and magnesium powder collecting device according to claim 2, characterized in that: A gear ring is rotatably installed on the partition, the gear ring is sleeved outside the filter and is coaxial with the filter, and at least one spray pipe is installed on the gear ring; a first motor is also fixedly installed on the partition, and a gear meshing with the gear ring is installed on the output shaft of the first motor. The first motor drives the gear ring to rotate reciprocatingly through the gear, thereby driving the spray pipe to rotate reciprocatingly around the filter.

5. A magnesium chips and magnesium powder collecting device according to claim 4, characterized in that: The air pipe is rotatably connected to the pipeline, and the air pipe is connected to the movable plate; a second motor is fixedly installed in the shell, the output shaft of the second motor is connected to the air pipe through a transmission belt, and the second motor drives the movable plate to reciprocate through the air pipe.

6. A magnesium chips and magnesium powder collecting device according to claim 2, characterized in that: The invention also comprises a nitrogen generator, which is used for generating nitrogen and using the nitrogen to assist the gas carrying magnesium powder to enter the collection chamber.

7. A magnesium chips and magnesium powder collecting device according to claim 2, characterized in that: A detachable hopper is arranged in the shell and at the bottom of the collecting chamber, and the hopper receives the magnesium powder and magnesium chips dropped from the filter screen.

8. The magnesium chips and powder collecting device according to claim 1, characterized in that: The filter plates are made of flexible material, and two adjacent filter plates are connected by rods.

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