Magnesium chip and magnesium powder collecting device

Abstract

The invention relates to the technical field of filtering and collecting, in particular to a magnesium chip and magnesium powder collecting device which comprises a shell, a filter screen and a switching assembly. The filter screen is in a cylinder shape formed by sequentially hinging and enclosing a plurality of filter plates, and hinging shafts of every two adjacent filter plates are sequentially and alternately a first shaft and a second shaft; the switching assembly comprises a fixed plate and a movable plate, and the fixed plate is fixed in the shell; the fixing plate is provided with an annular groove coaxial with the axis of the filter screen and is provided with a plurality of sliding grooves distributed around the axis of the filter screen in a radial mode. The plurality of first shafts are slidably mounted in the annular groove; the movable plate is rotationally arranged in the shell, and a plurality of arc-shaped grooves distributed around the axis of the filter screen are formed in the movable plate; each second shaft penetrates through one arc-shaped groove and is in sliding fit with one sliding groove. When the movable plate rotates in a reciprocating mode, the arc-shaped grooves are used for driving the second shafts to move in a reciprocating mode along the sliding grooves, the moving directions of every two adjacent second shafts in the corresponding sliding grooves are opposite, every two adjacent filter plates move close to and away from each other in a reciprocating mode, and magnesium chips and magnesium powder attached to the filter plates are promoted to fall off.

Description

Technical Field

[0001] The invention relates to the technical field of filtering and collecting, and in particular to a magnesium chips and magnesium powder collecting device. Background Art

[0002] Magnesium powder is an important metal powder raw material, widely used in metallurgy, chemical industry, electronics, ceramics, rubber, plastics and other fields. The production process of magnesium powder includes dissolution, precipitation, filtration, drying and other steps. During the production process, some magnesium powder will be dispersed in the gas, and it is easy to be discharged with the gas when the exhaust gas is discharged, which will not only pollute the environment, but also cause waste of magnesium powder. Therefore, when the exhaust gas is discharged, the magnesium powder in the gas needs to be collected. In the prior art, a Chinese patent with announcement number CN217773617U discloses a magnesium chips and magnesium powder collection device, which filters magnesium chips and magnesium powder by setting a secondary filter to improve the filtration efficiency, and introduces nitrogen to keep the collection process in a safe environment. 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 invention provides a magnesium chips and magnesium powder collecting device for collecting the magnesium powder on a filter.

[0004] A magnesium chips and magnesium powder collecting device of the present invention adopts the following technical solution: A magnesium chip and magnesium powder collecting device comprises a shell, a filter screen and a switching assembly; the filter screen is arranged in the shell, and is in a cylindrical shape 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, 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 sliding grooves radially and evenly distributed around the axis of the filter screen and all located on the inner circle of the annular groove are provided on the fixed plate; Multiple first shafts 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 outer shell and is coaxial with the axis of the filter cartridge; the movable plate is provided with multiple arc grooves uniformly distributed circumferentially around its rotation axis, and the multiple 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 the crest and trough of the wave; the second shaft of the filter screen passes through an arc groove and slidably cooperates 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 shaft alternately approach and move away from each other.

[0005] Furthermore, a partition is provided in the outer shell, which divides the outer shell into a collecting chamber and an air outlet chamber, and 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 to 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.

[0006] Furthermore, a magnesium chip and magnesium powder collection device also includes at least one spray pipe, which is in the collection chamber and located between the filter and the outer shell. The spray pipe is installed in the outer shell around the axis of the filter, and a plurality of spray holes distributed along the axis of the filter are opened on the spray pipe. The spray holes face the filter and are used to spray a volatile solution that is not easy to react with magnesium powder onto the filter.

[0007] Furthermore, 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.

[0008] Furthermore, a magnesium chip and magnesium powder collection device 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 a plurality of air holes distributed along the axis of the filter are opened on the air pipe; the air pump can blow air from the inside to the outside of the filter through the air pipe.

[0009] Furthermore, 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 outer shell, and the output shaft of the second motor is connected to the air pipe through a transmission belt for transmission, and the second motor drives the movable plate to reciprocate through the air pipe.

[0010] Furthermore, a magnesium chips and magnesium powder collection device also includes a nitrogen generator for generating nitrogen and using the nitrogen to assist the gas containing magnesium powder to enter the collection chamber.

[0011] Furthermore, a detachable hopper is provided in the shell and at the bottom of the collecting chamber, and the hopper receives the magnesium powder and magnesium chips falling from the filter screen.

[0012] Furthermore, the filter plates are made of flexible material, and two adjacent filter plates are connected by rods.

[0013] Furthermore, at least two groups of switching components are provided, which are respectively located at both ends of the filter in the axial direction, and the fixed plate and the movable plate of the switching component located at one end of the filter close to the partition are both annular, so that the inner circle of the filter is connected with the through hole.

[0014] The beneficial effect of the present invention is that during the reciprocating rotation of the movable plate of the magnesium chips and magnesium powder collecting device of the present invention, the arc groove is used to drive the second shaft to move back and forth along the slide groove, and the movement directions of two adjacent second shafts in the corresponding slide groove are opposite, so that the two adjacent filter plates are reciprocatedly approached and moved away, causing the magnesium chips and magnesium powder attached to the filter plates to fall off.

[0015] Furthermore, by setting up a spray pipe to spray a volatile solution that is not easy to react with magnesium powder onto the filter, the inside of the shell can be cooled during volatilization and dust inside the shell can be reduced; and the liquid solution sprayed on the filter can promote the agglomeration of magnesium chips and magnesium powder, which makes it easier to fall off when the filter is deformed.

[0016] Furthermore, by arranging a recoil device to blow air from the inside to the outside of the filter, the magnesium chips and powder agglomerated on the filter can be further caused to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a magnesium chips and magnesium powder collecting device of the present invention; Figure 2 for Figure 1 Side view of Figure 3 for Figure 2 Schematic diagram of the section along the middle BB direction; Figure 4 for Figure 2 Schematic diagram of the section along the AA direction; Figure 5 for Figure 4 The enlarged schematic diagram of point D in the middle; Figure 6 for Figure 4 The enlarged schematic diagram of point E in the middle; Figure 7 for Figure 2 Schematic diagram of the cross section along the CC direction; Figure 8 for Figure 7 The enlarged schematic diagram of F in the middle; Fig. 9 It is a schematic diagram of another state of the filter screen in an embodiment of a magnesium chips and magnesium powder collecting device of the present invention; Fig.10 This is a schematic structural diagram of a fixed plate in an embodiment of a magnesium chips and magnesium powder collecting device of the present invention.

[0019] 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, suction device; 200, filter; 210, first shaft; 220, second shaft; 220a, state shaft one; 220b, state shaft two; 300, switching assembly; 310, fixed plate; 311, annular groove; 312, slide groove; 320, movable plate; 321, arc groove; 400, liquid spray pipe; 510, air pipe; 520, air pump; 530, pipeline; 600, nitrogen generator. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] An embodiment of a magnesium chips and magnesium powder collecting device of the present invention is as follows Figures 1 to 10 As shown, it includes a housing 100 , a filter 200 and a switching assembly 300 .

[0022] The filter screen 200 is arranged in the outer shell 100, and is in the shape of a cylinder formed by a plurality of filter plates hinged 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 200, the hinge axes of two adjacent filter plates are alternately the first axis 210 and the second axis 220.

[0023] The switching assembly 300 includes a fixed plate 310 and a movable plate 320. The fixed plate 310 is fixed in the housing 100 and is perpendicular to the axis of the filter 200. The fixed plate 310 is provided with an annular groove 311 coaxial with the axis of the filter 200, and the fixed plate 310 is provided with a plurality of sliding grooves 312 which are evenly distributed radially around the axis of the filter 200 and are all located on the inner circle of the annular groove 311. The plurality of first shafts 210 of the filter 200 are all slidably mounted in the annular groove 311; the movable plate 320 is located on the side of the fixed plate 310 close to the filter 200, and the movable plate 320 is rotatably arranged in the housing 100 and is coaxial with the axis of the filter 200; the movable plate 320 is provided with a plurality of arc grooves 321 evenly distributed circumferentially around its rotation axis, and the plurality of arc grooves 321 are connected end to end in sequence and not connected in the circumferential direction of the movable plate 320, forming a wavy path around the circumferential direction of the movable plate 320, and the crest of the wave shape is farther away from the center of the movable plate 320 than the trough. Each arc groove 321 is a section between the crest and trough of the wave shape. The second shaft 220 of the filter 200 passes through an arc groove 321 and slidably cooperates with a slide groove 312; when the movable plate 320 reciprocates relative to the fixed plate 310, the two filter plates of the filter 200 hinged to the second shaft 220 are alternately approached and moved away from each other.

[0024] Specifically, when the movable plate 320 rotates forward relative to the fixed plate 310, one of the two adjacent second shafts 220 moves from the crest of the wave to the trough of the wave relative to the arc groove 321 under the restriction of the slide groove 312, and the second shaft 220 is defined as the state shaft 1 220a. Figure 8 Another second axis 220 moves from the trough of the wave to the crest of the wave relative to the arc groove 321 under the restriction of the slide groove 312, and the second axis 220 is defined as the state axis 220b, as shown in FIG. Figure 8 When the state axis 1 220a moves toward the trough, the two filter plates hinged thereto are driven to move closer to each other. When the state axis 220b moves toward the crest, the two filter plates hinged thereto are driven to move away from each other. When the state axis 1 220a moves to the trough, the state axis 220b moves to the crest. Fig. 9 As shown, the angle between the two filter plates hinged to the state axis 1 220a is reduced to the minimum, and the angle between the two filter plates hinged to the state axis 220b is stretched to the maximum. Then the movable plate 320 is reversed relative to the fixed plate 310, so that the state axis 1 220a moves from the trough to the crest, driving the two filter plates hinged thereto away from each other, and the state axis 220b moves from the crest to the trough, driving the two filter plates hinged thereto closer to each other, until the state axis 1 220a moves relatively to the crest of the arc groove 321, and the state axis 2 220b moves relatively to the trough of the arc groove 321, and the movable plate 320 rotates forward again.

[0025] During the reciprocating rotation of the movable plate 320, the arc groove 321 is used to drive the second shaft 220 to reciprocate along the chute 312, and the moving directions of the two adjacent second shafts 220 in the corresponding chute 312 are opposite, so that the two adjacent filter plates are reciprocated close to and away from each other, causing the magnesium chips and magnesium powder attached to the filter plates to fall off. Preferably, the filter plate is a flexible material, such as a cloth bag, and the two adjacent filter plates are connected by a rod, and the rod serves as the first shaft 210 and the second shaft 220 of the filter screen 200. The two adjacent second shafts 220 that move to the trough straighten and flatten the two filter plates connected by the second shaft 220 located between the two second shafts 220 and moving the peak, thereby accelerating the falling of the magnesium chips and magnesium powder on the filter plate. In some other embodiments, the filter plate can also be a rigid material, and the shaking generated when the filter screen 200 is deformed is used to cause the magnesium chips and magnesium powder on the filter plate to fall off.

[0026] In this embodiment, a partition 110 is provided in the housing 100, and the partition 110 divides the housing 100 into a collection chamber and an air outlet chamber, and a through hole connecting the collection chamber and the air outlet chamber is provided on the partition 110. The filter screen 200 is located in the collection chamber, and the inner circle of the filter screen 200 is connected to the air outlet chamber through the through hole; the collection chamber is used to receive gas with magnesium chips and magnesium powder, and the gas is discharged from the air outlet chamber after being filtered by the filter screen 200, and the magnesium chips and magnesium powder are intercepted on the outer surface of the filter screen 200.

[0027] In this embodiment, a magnesium chips and magnesium powder collection device also includes at least one spray pipe 400, at least one spray pipe 400 is in the collection chamber and is located between the filter screen 200 and the outer shell 100, the spray pipe 400 is rotatably installed in the outer shell 100 around the axis of the filter screen 200, and a plurality of spray holes distributed along the axis of the filter screen 200 are opened on the spray pipe 400, and the spray holes face the filter screen 200, and are used to spray a volatile solution that is not easy to react with magnesium powder onto the filter screen 200. Specifically, the spray pipe 400 is connected to a hose (not shown in the figure) extending to the outside of the shell 100, which is used to receive the spray solution. Due to the special properties of magnesium powder, anhydrous ethanol can be used as the solution, which is not easy to react with magnesium powder and can evaporate quickly to cool the inside of the shell 100 and reduce dust in the shell 100 when the filter 200 is deformed; anhydrous ethanol is in liquid form, and spraying it on the filter 200 can cause magnesium chips and magnesium powder to clump, and then it is easier to fall off when the filter 200 is deformed.

[0028] In this embodiment, a ring gear 120 is rotatably mounted on the partition 110, the ring gear 120 is sleeved outside the filter 200 and is coaxial with the filter 200, and at least one liquid spraying pipe 400 is mounted on the ring gear 120; a first motor 130 is also fixedly mounted on the partition 110, and a gear 140 meshing with the ring gear 120 is mounted on the output shaft of the first motor 130, and the first motor 130 drives the ring gear 120 to reciprocate through the gear 140, thereby driving the liquid spraying pipe 400 to reciprocate around the filter 200. When there are multiple liquid spraying pipes 400, the multiple liquid spraying pipes 400 are all fixedly mounted on the ring gear 120 and are evenly distributed around the ring gear 120; and the reciprocating angle of the ring gear 120 can enable the rotation range of the multiple liquid spraying pipes 400 to cover the entire circle of the filter 200, so that the solution can fully contact the magnesium chips and magnesium powder on the filter 200.

[0029] In this embodiment, a magnesium chips and magnesium powder collection device also includes a recoil device, which includes an air pipe 510 and an air pump 520. The air pipe 510 is located in the inner circle of the filter 200 and is connected to the air pump 520 located outside the outer shell 100 through a pipe 530; the air pipe 510 is parallel to the axis of the filter 200, and the air pipe 510 is provided with a plurality of air holes distributed along the axis of the filter 200; the air pump 520 can blow air from the inside to the outside of the filter 200 through the air pipe 510 to recoil the magnesium powder attached to the outside of the filter 200.

[0030] 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 installed in the outer shell 100, and the output shaft of the second motor 150 is connected to the air pipe 510 through a transmission belt. The second motor 150 drives the movable plate 320 to reciprocate through the air pipe 510, and the air pipe 510 can increase the blowing range of the filter 200 when rotating.

[0031] In this embodiment, a magnesium chip and magnesium powder collection device further includes a nitrogen generator 600 for generating nitrogen and using the nitrogen to assist the gas with magnesium powder to enter the collection chamber. The nitrogen generated by the nitrogen generator 600 can also be connected to the air pump 520 to backwash the filter 200.

[0032] In this embodiment, a detachable hopper 160 is disposed in the housing 100 and at the bottom of the collecting chamber, and the hopper 160 receives the magnesium powder and magnesium chips dropped from the filter screen 200 .

[0033] In this embodiment, the housing 100 is provided with an air inlet 170 and an air outlet 180, the air inlet 170 is connected to the collection chamber, and is used to receive gas with magnesium chips and magnesium powder, and the air inlet 170 is connected to a gas extraction device 190, and the gas extraction device 190 extracts the gas with magnesium powder in the previous process to the collection chamber. The air outlet 180 is connected to the gas outlet chamber, and can be connected to an external distillation device to recover the anhydrous ethanol carried in the volatilized gas.

[0034] In this embodiment, the axis of the filter screen 200 is vertically arranged, and the collection chamber is located at the lower side of the air outlet chamber. At least two groups of switching components 300 are provided, wherein the two switching components 300 are respectively located at the two ends of the filter screen 200 in the axial direction, and the fixed plate 310 and the movable plate 320 of the switching component 300 located at one end of the filter screen 200 close to the partition 110 block the inner ring of the lower end of the filter screen 200, and the fixed plate 310 and the movable plate 320 of the switching component 300 located at one end of the filter screen 200 close to the partition 110 are both annular, so that the upper end of the inner ring of the filter screen 200 is connected to the through hole. In order to prevent magnesium chips and magnesium powder from falling into the annular groove 311, the chute 312 and the arc groove 321 to affect the movement of the first shaft 210 and the second shaft 220, a retractable and deformable dust cover (not shown in the figure) that can cover the annular groove 311, the chute 312 and the arc groove 321 is connected between the filter plate and the movable plate 320 and the fixed plate 310.

[0035] When the magnesium chips and magnesium powder collecting device of the present invention is in use, the gas with magnesium chips and magnesium powder enters through the air inlet 170, and after being filtered by the filter 200, the magnesium chips and magnesium powder remain on the outer surface of the filter 200. After the gas enters the inner circle of the filter 200, it enters the gas outlet chamber through the through hole and is discharged from the gas outlet 180. As the working time of the filter 200 increases, the magnesium chips and magnesium powder accumulated on the outside of the filter 200 increases. When the filter 200 needs to be cleaned, the second motor 150 is started to drive the air pipe 510 to rotate back and forth, and then drive the movable plate 320 to rotate back and forth. At the same time, the first motor 130 is started to drive the spray pipe 400 to rotate through the gear ring 120. The spray pipe 400 sprays the solution on the outer circle of the filter 200, so that the magnesium chips and magnesium powder on the outside of the filter 200 are agglomerated, and the sprayed solution is volatilized and discharged with the subsequent gas. The reciprocating rotation of the movable plate 320 drives the second shaft 220 to reciprocate in the chute 312, and any two filter plates constituting the filter screen 200 continuously approach and move away from each other, causing the agglomerated magnesium chips and magnesium powder to fall, 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, and the gas is stopped from being sent into the housing 100, 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 a period of recoil, the air pump 520 is turned off, and gas is continued to be sent into the housing 100 to collect magnesium chips and magnesium powder. Among them, the deformation of the filter 200 and the spraying of the filter 200 by the spray pipe 400 can be carried out simultaneously, and start automatically after the filter 200 has worked for a period of time. The recoil device can start the recoil of the filter 200 after the spray pipe 400 starts to spray the filter 200 for a period of time, and then shut down synchronously, or shut down the recoil device first, and then stop the deformation of the filter 200 and the spraying of the filter 200 by the spray pipe 400.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should 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 includes a fixed plate and a movable plate, the fixed plate is fixed in the shell and is perpendicular to the axis of the filter; an annular groove coaxial with the axis of the filter is provided on the fixed plate, and a plurality of slide grooves are provided on the fixed plate which are radially evenly distributed around the axis of the filter and are all located on the inner circle of the annular groove; a plurality of first axes of the filter are slidably mounted in the annular groove; the movable plate is located on the side of the fixed plate close to the filter, the movable plate is rotatably arranged in the shell and is coaxial with the axis of the filter cartridge; a plurality of arc grooves evenly distributed circumferentially around its rotation axis are provided on the movable plate, 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 the crest and the trough of the wave; the second axis of the filter passes through an arc groove and slidably cooperates with a slide groove; when the movable plate reciprocates relative to the fixed plate, the two filter plates hinged to the second axis of the filter are alternately approached and moved away from each other.

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: It also includes at least one spray pipe, which is located in the collection chamber and between the filter screen and the shell. The spray pipe is installed in the shell to rotate around the axis of the filter screen, and a plurality of spray holes distributed along the axis of the filter screen are opened on the spray pipe. The spray 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.

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 3, characterized in that: 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 multiple 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.

6. A magnesium chips and magnesium powder collecting device according to claim 5, 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.

7. 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.

8. 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.

9. 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.

10. A magnesium chips and magnesium powder collecting device according to claim 2, characterized in that: At least two groups of switching components are provided, which are respectively located at the two ends of the filter in the axial direction, and the fixed plate and the movable plate of the switching component located at one end of the filter close to the partition are both annular, so that the inner circle of the filter is connected with the through hole.

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