Micro powder magnetic separator

Abstract

The utility model relates to a micro powder magnetic separator which comprises a shell, a magnetic bar component and a driving component, gas enters the shell from a gas inlet through an air pipe, micro powder is uniformly dispersed in gas flow under the action of wind field force, the magnetic bar component is attached to the shell, and the gas flow flows in an inner cavity of the shell, so that the micro powder is uniformly dispersed in the gas flow. Magnetic micro-powder particles in airflow are adsorbed on the inner wall of the shell under the action of magnetic field force, after treated gas is exhausted out of the shell through the exhaust port, the exhaust port is closed, the powder exhaust port is opened, the two driving assemblies are started, and the two air cylinders contract to drive the two magnetic rod assemblies to rotate oppositely, so that the magnetic rod assemblies are far away from the shell; the magnetic substances slide down along the inner wall of the shell after losing magnetic force and are finally discharged through the powder discharging port, the micro powder and the gas can be separated only by stretching and retracting the driving assembly once, the energy consumption of the driving assembly is lower, and the material separation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to material and magnetic material separation technical field especially relates to a kind of micropowder magnetic separators. BACKGROUND

[0002] The existing micropowder magnetic separator includes rotating cylinder, cover, spiral magnetic roller and driving device, when using, iron-containing micropowder material flows down from the feed inlet, and is gathered and distributed on the outer edge of the rotating cylinder by rotating rotating cylinder, the spiral magnetic roller moves relative to the rotating cylinder, and the gathered material moves along with the spiral magnetic field, and in the process of moving along the downward magnetic field, the non-magnetic material in the gathered material falls into the finished product outlet under the action of gravity, and the magnetic iron powder moves along the rotating cylinder to the iron material outlet under the action of rotating magnetic field, and the iron material outlet is not installed magnet, so that the magnetic iron powder is separated from the rotating cylinder under the action of gravity and flows out of the iron material outlet, since the existing micropowder magnetic separator uses driving device to continuously drive the rotating cylinder to separate and move the gathered material, the energy consumption of the driving device is high, and the cost of separating material is large.

[0003] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] In view of the deficiencies of the prior art, the embodiments of the present utility model disclose a micropowder magnetic separator to solve the problem that the existing micropowder magnetic separator uses driving device to continuously drive the rotating cylinder to separate and move the gathered material, resulting in high energy consumption of the driving device and large cost of separating material.

[0005] The technical solutions adopted by the present utility model are as follows:

[0006] A micropowder magnetic separator includes:

[0007] The shell has an inner cavity, an air inlet is formed at the top end of the shell, the air inlet is connected to an air pipe, and a powder discharge port and an exhaust port are formed at the bottom end of the shell;

[0008] The magnetic rod assembly has two, the two magnetic rod assemblies are symmetrically hinged to the two sides of the shell at the top end, and the two magnetic rod assemblies enclose and are sleeved outside the shell;

[0009] The driving assembly has two, the driving assembly includes a cylinder, the two cylinders are symmetrically hinged to the two sides of the top end of the shell at the top end, the piston rod of the cylinder is hinged to one side of the magnetic rod assembly away from the shell, and the piston rod extends or retracts to drive the magnetic rod assembly to rotate around the hinge shaft at the first end to approach or move away from the shell.

[0010] Further, the shell comprises a circular truncated cone part and a first cylinder part, the first cylinder part is arranged at the lower end of the circular truncated cone part, and the circular truncated cone part and the first cylinder part are connected internally.

[0011] Further, the shell internally arranges a shunt cone shell, the shunt cone shell comprises a circular cone part and a second cylinder part, the circular cone part is arranged in the circular truncated cone part, the circular cone part is arranged vertically, the top of the circular cone part is directed to the air inlet, a gap is formed between the outer wall surface of the circular cone part and the inner wall surface of the circular truncated cone part, and a shunt channel is formed, the second cylinder part is arranged at the bottom of the circular cone part, the bottom of the second cylinder part is provided with a backflow port, and the micro-powder magnetic separator further comprises an exhaust pipeline, the exhaust pipeline is arranged in the second cylinder part, the exhaust port is arranged at the bottom end of the exhaust pipeline, the bottom end of the exhaust pipeline extends out of the backflow port and passes through the bottom of the first cylinder part, and the exhaust pipeline connects the inside of the second cylinder part and the outside of the shell.

[0012] In the shunt channel, the gas enters the second cylinder part through the backflow port, and then the gas enters the exhaust pipeline and is discharged from the exhaust port at the bottom end of the exhaust pipeline.

[0013] Further, the shell further comprises a funnel part, one end of the funnel part with a larger outer diameter is connected to the bottom end of the first cylinder part, the powder discharge port is arranged at the bottom end of the funnel part, and the top end of the exhaust pipeline passes through the wall surface of the funnel part and the backflow port and extends into the second cylinder part.

[0014] Further, the driving assembly further comprises support frames, the two support frames are symmetrically arranged at the two sides of the top end of the circular truncated cone part, the top end of the air cylinder is hinged to the bottom of the support frame, the piston rod of the air cylinder is hinged to the side of the magnetic rod assembly away from the shell, and the air cylinder drives the magnetic rod assembly to rotate away from or close to the shell around the connection between the top end of the magnetic rod assembly and the shell through the extension and retraction of the piston rod.

[0015] Further, the magnetic rod assembly comprises a magnetic rod frame and a plurality of magnetic rods, and the plurality of magnetic rods are vertically arranged in the magnetic rod frame.

[0016] Further, the cross section of the magnetic rod frame is a semicircular ring.

[0017] Further, the side of the magnetic rod frame away from the shell is further provided with a connecting part, and the connecting part is hinged to the bottom end of the piston rod of the air cylinder.

[0018] A method for separating magnetic substances from fine powder, using a fine powder magnetic separator as described above, comprising the following steps:

[0019] Air inlet: gas enters the shell through the air pipe from the air inlet;

[0020] Primary separation: the gas passes through the inner side of the first cylinder part, and the magnetic fine powder in the gas is adsorbed on the inner wall of the first cylinder part by the magnetic rod assembly;

[0021] Air exhaust: the treated gas is discharged out of the shell through the air exhaust pipe from the air exhaust port;

[0022] Powder discharge: start the two drive assemblies, the two air cylinders are retracted to drive the two magnetic rod assemblies to rotate towards each other, so that the magnetic rod assemblies are away from the shell, the magnetic substances lose the magnetic force and fall along the inner wall of the first cylinder part and the funnel part, and finally are discharged through the powder discharge port.

[0023] Further, the air inlet step further comprises the following steps:

[0024] Flow separation: the gas passes through the flow separation cone shell in the shell, and the gas is separated at the conical part, and the gas flows in the flow separation channel with the fine powder;

[0025] The primary separation step further comprises the following steps:

[0026] Secondary separation: the treated gas continues to flow through the backflow port into the second cylinder part.

[0027] The beneficial effects of the embodiments of the utility model are as follows:

[0028] (1) A fine powder magnetic separator comprises a shell, a magnetic rod assembly and a drive assembly, two magnetic rod assemblies are enclosed and sleeved on the outside of the shell, gas enters the shell through the air pipe from the air inlet, fine powder is uniformly dispersed in the airflow under the action of wind field force, because the magnetic rod assembly is attached to the shell, the airflow flows in the shell cavity, the magnetic fine powder particles in the airflow are adsorbed on the inner wall of the shell under the action of the magnetic field force, after the treated gas is discharged out of the shell through the air exhaust port, the air exhaust port is closed, the powder discharge port is opened, the two drive assemblies are started, the two air cylinders are retracted to drive the two magnetic rod assemblies to rotate towards each other, so that the magnetic rod assemblies are away from the shell, the magnetic substances lose the magnetic force and slide along the inner wall of the shell, and finally are discharged through the powder discharge port, the drive assembly only needs to be stretched and contracted once to realize the separation of fine powder and gas, the energy consumption of the drive assembly is lower, and the cost of separating materials is reduced.

[0029] (II) further, the shell inside the erection of the shunt cone shell and exhaust duct, gas from the air inlet into the shell, gas through the shell in the shunt cone shell, gas in the conical part of the shunt, gas with the micro powder continues to flow, the magnetic micro powder in the gas and the magnetic rod assembly interact, the magnetic micro powder in the gas is adsorbed by the magnetic field of the magnetic rod assembly and the inner wall of the shell, the gas flows along the shunt channel through the backflow port into the second cylinder, the gas enters the exhaust duct from the exhaust port at the bottom of the exhaust duct, the shunt cone shell makes the gas flow field dispersion force, the magnetic micro powder in the gas is closer to the magnetic rod assembly, the magnetic attraction of the magnetic micro powder is stronger, further improving the separation effect of the micro powder magnetic separator.

[0030] (III) further, the step of primary separation also includes secondary separation, the gas after primary separation continues to flow through the backflow port into the second cylinder, the residual magnetic micro powder in the gas is adsorbed on the inner wall of the second cylinder by the magnetic rod assembly, the secondary separation ensures that these small magnetic particles can be completely separated, avoiding the loss of magnetic material, through this multiple processing, the separation efficiency of the equipment is improved, and the thoroughness of the separation is also enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a front view structural schematic diagram of the micro powder magnetic separator of the utility model.

[0032] Figure 2 It is a front view structural schematic diagram of the micro powder magnetic separator of the utility model.

[0033] Figure 3 It is a front view structural schematic diagram of the micro powder magnetic separator of the utility model.

[0034] Figure 4 It is a working structural schematic diagram of the driving assembly in the micro powder magnetic separator of the utility model.

[0035] In the drawing:

[0036] 100, shell, 101, air inlet, 102, powder discharge port, 103, exhaust port, 104, shunt channel, 110, circular table part, 120, first cylinder, 130, exhaust duct, 140, funnel part, 200, magnetic rod assembly, 210, magnetic rod frame, 220, magnetic rod, 230, connecting part, 300, driving assembly, 310, support frame, 320, air cylinder, 400, shunt cone shell, 410, conical part, 420, second cylinder, 421, backflow port. DETAILED DESCRIPTION

[0037] The specific implementation of the utility model will be described below in combination with the drawings.

[0038] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the device of the utility model combining with the drawings and specific embodiments. According to the following description, the advantages and characteristics of the utility model will be more clearly. It should be noted that the drawings are very simplified and all use non-precise proportions, only to facilitate, clearly assist the purpose of explaining the embodiment of the utility model. In order to make the purpose, characteristics and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be known that the structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and not used to limit the limiting conditions of the implementation of the utility model, so it does not have the substantial meaning of technology, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that can be produced by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0039] First embodiment:

[0040] The embodiment discloses a fine powder magnetic separator.

[0041] Figure 1 It is a front view structural schematic diagram of the fine powder magnetic separator of the utility model. As shown in Figure 1 A fine powder magnetic separator includes a shell 100, a magnetic rod assembly 200 and a driving assembly 300, the shell 100 has an inner cavity, the shell 100 is made of non-magnetic material, such as stainless steel and the like. The top end of the shell 100 is provided with an air inlet 101, the air inlet 101 is communicated with the air pipe, the bottom end of the shell 100 is provided with a powder discharge port 102 and an exhaust port 103 respectively, exemplarily, the shell 100 includes a circular table part 110 and a first cylindrical part 120, the first cylindrical part 120 is arranged at the lower end of the circular table part 110, the circular table part 110 and the first cylindrical part 120 are communicated inside.

[0042] Figure 2 It is a top view structural schematic diagram of the fine powder magnetic separator of the utility model. As shown in Figures 1-2 The magnetic rod assembly 200 has two, two magnetic rod assemblies 200 top ends are symmetrically hinged on both sides of the shell 100, and two magnetic rod assemblies 200 are enclosed and sleeved on the outside of the shell 100.

[0043] As Figure 1As shown, the drive assembly 300 has two, the drive assembly 300 includes a cylinder 320, two cylinders 320 top end symmetrical hinge on the top of the housing 100 both sides, the piston rod of the cylinder 320 is hinged to the side of the magnetic rod assembly 200 away from the housing 100, the piston rod extends or retracts and drives the magnetic rod assembly 200 to rotate around the hinge shaft of the first end thereof to approach or away from the housing 100. Exemplary, the drive assembly 300 further comprises a support frame 310, two support frames 310 are symmetrically provided on both sides of the top end of the circular table portion 110, and the support frame 310 is perpendicular to the hinge shaft of the first end of the magnetic rod assembly 200, the top end of the cylinder 320 is hinged to the bottom of the support frame 310, the piston rod of the cylinder 320 is hinged to the side of the magnetic rod assembly 200 away from the housing 100, and the cylinder 320 drives the magnetic rod assembly 200 to rotate away from or close to the housing 100 around the connection between the top end of the magnetic rod assembly 200 and the housing 100 through the piston rod extension and retraction.

[0044] Figure 3 It is a top view structure diagram of the magnetic rod assembly in the micro-powder magnetic separator. Figures 1-3 As shown, further, the magnetic rod assembly 200 includes a magnetic rod holder 210 and a plurality of magnetic rods 220, and the magnetic force of the magnetic rod 220 is ≥11000Gs. Specifically, the cross section of the magnetic rod holder 210 is a semicircular ring. Exemplarily, the side of the magnetic rod holder 210 away from the housing 100 is further provided with a connecting portion 230, and the connecting portion 230 is hinged to the bottom end of the piston rod of the cylinder 320. The plurality of magnetic rods 220 are vertically arranged in the magnetic rod holder 210. The plurality of magnetic rods 220 in the magnetic rod assembly 200 are arranged in the magnetic rod holder 210 in a vertical manner, forming a stable magnetic field region, and the magnetic rod 220 effectively adsorbs and captures the passing magnetic micro-powder particles, so that the magnetic substance can be adsorbed to the maximum extent when passing through, thereby improving the separation effect of the magnetic substance.

[0045] As shown in Figure 1 and Figure 4 Further, the housing 100 further comprises a funnel portion 140, one end of the funnel portion 140 with a larger outer diameter is connected to the bottom end of the first cylindrical portion 120, the powder discharge port 102 is provided at the bottom end of the funnel portion 140, and the top end of the exhaust duct 130 penetrates through the wall surface of the funnel portion 140 and the backflow port 421 and extends into the second cylindrical portion 420. The funnel portion 140 is designed, when the magnetic micro-powder particles lose the magnetic attraction, the magnetic micro-powder particles fall under the action of gravity, providing a sliding path for the magnetic micro-powder particles, ensuring that the particles flow smoothly to the powder discharge port 102 under the action of gravity, effectively avoiding the problems of particle accumulation, blockage or retention, and ensuring the continuous operation and separation efficiency of the equipment.

[0046] The embodiment also discloses a method for separating magnetic substances from micro-powder.

[0047] As shown in Figure 1 andFigure 4 As shown in the figure, a method for separating magnetic substances from fine powder uses the aforementioned fine powder magnetic separator, and comprises the following steps:

[0048] Step S1, air inlet: air enters the shell 100 through the air inlet 101 via the air pipe;

[0049] Step S2, air distribution: the air passes through the air distribution cone 400 in the shell 100, and is distributed at the conical part 410; the air carrying the fine powder flows in the air distribution channel 104;

[0050] Step S3, primary separation: the air passes through the inner side of the first cylindrical part 120, and the magnetic fine powder in the air is adsorbed on the inner wall of the first cylindrical part 120 by the magnetic rod assembly 200;

[0051] Step S4, air outlet: the treated air is discharged from the air outlet 103 of the shell 100 via the air outlet pipe 130;

[0052] Step S5, powder outlet: the two driving assemblies 300 are started, the two air cylinders 320 are retracted to drive the two magnetic rod assemblies 200 to rotate towards each other, the magnetic rod assemblies 200 are moved away from the shell 100, the magnetic substances lose the magnetic force and fall along the inner wall of the first cylindrical part 120 and the inner wall of the funnel part 140, and finally are discharged through the powder outlet 102.

[0053] In this embodiment, the driving assembly 300 only needs to be retracted once to realize the separation of the fine powder and the air, the energy consumption of the driving assembly 300 is lower, and the cost of separating the materials is reduced.

[0054] Second embodiment:

[0055] Based on the first embodiment, the second embodiment further optimizes and refines the structure in the inner cavity of the shell 100 of the first embodiment.

[0056] Figure 4 It is a schematic view of the working structure of the driving assembly in the fine powder magnetic separator. Figure 1 And Figure 4As shown, further, the shell 100 inside the erection of the shunt cone shell 400, the shunt cone shell 400 includes a conical part 410 and a second cylindrical part 420, the conical part 410 is located in the circular table part 110, the conical part 410 is vertically arranged, the vertex of the conical part 410 is towards the air inlet 101, the outer wall surface of the conical part 410 and the inner wall surface of the circular table part 110 have a gap and form a shunt passage 104, the second cylindrical part 420 is arranged at the bottom end of the conical part 410, the second cylindrical part 420 is provided with a backflow port 421 at the bottom, the micro-powder magnetic separator further comprises an exhaust duct 130, the exhaust duct 130 is arranged in the second cylindrical part 420, the exhaust port 103 is arranged at the bottom end of the exhaust duct 130, the bottom end of the exhaust duct 130 extends out of the backflow port 421 and passes through the bottom of the first cylindrical part 120, the exhaust duct 130 communicates the inside of the second cylindrical part 420 with the outside of the shell 100.

[0057] As shown in Figure 1 With Figure 4 As shown, the gas enters the shell 100 from the air inlet 101, the gas passes through the shunt cone shell 400 in the shell 100, the gas is shunted at the conical part 410, the entering gas flow maintains a laminar flow state, the stable gas flow rate is less than 0.8 m / s, the gas with the micro-powder continues to flow in the shunt passage 104, the magnetic micro-powder in the gas interacts with the magnetic rod assembly 200, the magnetic micro-powder in the gas is adsorbed by the magnetic field of the magnetic rod assembly 200 and the inner wall of the shell 100, after the gas flows along the shunt passage 104 and enters the second cylindrical part 420 through the backflow port 421, the gas enters the exhaust duct 130 from the exhaust port 103 at the bottom end of the exhaust duct 130, the shunt cone shell 400 makes the gas produce a gas flow field dispersion force, so that the magnetic micro-powder in the gas is closer to the magnetic rod assembly 200, the magnetic attraction force received by the magnetic micro-powder is stronger, and the separation effect of the micro-powder magnetic separator is further improved.

[0058] The embodiment also discloses a method for separating magnetic substances from micro-powder.

[0059] As shown in Figure 1 And Figure 4 A method for separating magnetic substances from micro-powder applies the aforementioned micro-powder magnetic separator, and comprises the following steps:

[0060] Step S1, air inlet: the gas enters the shell 100 from the air inlet 101 through the air pipe;

[0061] Step S2, shunt: the gas passes through the shunt cone shell 400 in the shell 100, the gas is shunted at the conical part 410, and the gas with the micro-powder flows in the shunt passage 104;

[0062] Step S3, primary separation: the gas flows through the inside of the first cylinder part 120, and the magnetic micro-powder in the gas is adsorbed on the inner wall of the first cylinder part 120 by the magnetic rod assembly 200;

[0063] Step S4, secondary separation: the gas after the primary separation continues to flow through the reflux port 421 into the second cylinder part 420, and the residual magnetic micro-powder in the gas is adsorbed on the inner wall of the second cylinder part 420 by the magnetic rod assembly 200;

[0064] Step S5, gas exhaust: the treated gas is exhausted from the exhaust port 103 of the shell 100 through the exhaust pipeline 130;

[0065] Step S6, powder discharge: the two driving assemblies 300 are started, the two cylinders 320 are contracted to drive the two magnetic rod assemblies 200 to rotate towards each other, the magnetic rod assemblies 200 are away from the shell 100, the magnetic material loses the magnetic force and falls along the inner wall of the first cylinder part 120 and the inner wall of the second cylinder part 420 into the funnel part 140, and finally is discharged through the powder discharge port 102.

[0066] In this embodiment, the secondary separation ensures that the fine magnetic particles can be completely separated, avoids the loss of the magnetic material, and through the multiple treatments, the separation efficiency of the device is improved, and the completeness of the separation is also enhanced.

[0067] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the description.

[0068] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A fine powder magnetic separator characterized by comprising: The utility model relates to a kind of micro-powder magnetic separators, including: Shell (100), the shell (100) has inner cavity, the top end of the shell (100) is equipped with air inlet (101), the air inlet (101) is communicated with air pipe, the bottom end of the shell (100) is equipped with powder discharge port (102) and exhaust port (103) respectively; Magnetic rod assembly (200), with two, two the magnetic rod assembly (200) top end is symmetrically hinged on the both sides of the shell (100), and two the magnetic rod assembly (200) is enclosed and is set on the outside of the shell (100); Driving assembly (300), with two, the driving assembly (300) includes cylinder (320), two the cylinder (320) top end is symmetrically hinged on the both sides of the top end of the shell (100), the piston rod of the cylinder (320) is hinged on the side of the magnetic rod assembly (200) away from the shell (100), the piston rod is extended or retracted and drives the magnetic rod assembly (200) rotates around the hinged shaft of its first end close to or away from the shell (100).

2. The micro-powder magnetic separator according to claim 1, characterized in that: The shell (100) includes circular truncated cone part (110) and first cylindrical part (120), the first cylindrical part (120) is equipped at the lower end of the circular truncated cone part (110), and the circular truncated cone part (110) and the first cylindrical part (120) are internally communicated.

3. The micro-powder magnetic separator according to claim 2, characterized in that: The shell (100) is internally erected with shunt cone shell (400), the shunt cone shell (400) includes circular cone part (410) and second cylindrical part (420), the circular cone part (410) is located in the circular truncated cone part (110), the circular cone part (410) is vertically arranged, the vertex of the circular cone part (410) is towards the air inlet (101), and the outer wall surface of the circular cone part (410) and the inner wall surface of the circular truncated cone part (110) have a gap and form a shunt passage (104), the second cylindrical part (420) is equipped at the bottom end of the circular cone part (410), the second cylindrical part (420) is equipped with backflow port (421) at the bottom, and the micro-powder magnetic separator further includes exhaust duct (130), the exhaust duct (130) is erected in the second cylindrical part (420), the exhaust port (103) is equipped at the bottom end of the exhaust duct (130), the bottom end of the exhaust duct (130) is extended backflow port (421) and passes through the bottom of the first cylindrical part (120), and the exhaust duct (130) is communicated with the inside of the second cylindrical part (420) and the outside of the shell (100); Wherein, gas is shunted into shunt passage (104) by the circular cone part (410) from the air inlet (101), after gas enters the second cylindrical part (420) through backflow port (421) along the shunt passage (104), gas enters exhaust duct (130) and is discharged from the exhaust port (103) at the bottom end of the exhaust duct (130).

4. The micro-powder magnetic separator according to claim 3, characterized in that: The shell (100) further comprises a funnel part (140), one end of the funnel part (140) with a larger outer diameter is connected to the bottom end of the first cylindrical part (120), the powder discharge port (102) is arranged at the bottom end of the funnel part (140), and the top end of the exhaust pipe (130) penetrates the wall of the funnel part (140) and extends into the second cylindrical part (420) and is connected to the backflow port (421).

5. The micro-powder magnetic separator according to claim 2, characterized in that: The driving assembly (300) further comprises a support frame (310), two support frames (310) are symmetrically arranged at the two sides of the top end of the circular table part (110), the support frame (310) is perpendicular to the hinge shaft of the first end of the magnetic rod assembly (200), the top end of the air cylinder (320) is hingedly connected to the bottom of the support frame (310), the piston rod of the air cylinder (320) is hingedly connected to the side of the magnetic rod assembly (200) away from the shell (100), and the air cylinder (320) drives the magnetic rod assembly (200) to rotate away from or close to the shell (100) around the connection between the top end of the magnetic rod assembly (200) and the shell (100) through the extension and retraction of the piston rod.

6. The micro-powder magnetic separator according to claim 5, characterized in that: The magnetic rod assembly (200) comprises a magnetic rod frame (210) and a plurality of magnetic rods (220), and the plurality of magnetic rods (220) are vertically arranged in the magnetic rod frame (210).

7. The micro-powder magnetic separator according to claim 6, characterized in that: The cross section of the magnetic rod frame (210) is a semicircular ring.

8. The micro-powder magnetic separator according to claim 7, characterized in that: The side of the magnetic rod frame (210) away from the shell (100) is further provided with a connecting part (230), and the connecting part (230) is hingedly connected to the bottom end of the piston rod of the air cylinder (320).

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