A separation device and method for metal powder processing

Abstract

The present invention discloses a separation device and method for metal powder processing, which relates to the field of magnetic separation technology; in order to solve the problem of separation effect; specifically includes a speed-controlled feeding mechanism, a primary screening and sizing mechanism and a magnetic separation mechanism which are arranged in sequence from top to bottom, the magnetic separation mechanism includes a magnetic separation shell, a magnetic suction plate fixed to one side of the magnetic separation shell, and a "Y"-shaped partition arranged on the inner side of the magnetic separation shell; the feeding port of the magnetic separation shell is fixed with a plurality of inclined guide plates. The present invention provides a vibration plate to throw and then allow the powder to fall freely to feed the material into the magnetic separation shell, and then provides a guide plate, so that compared with the traditional conveyor belt conveying method, there will be no pressure generated by gravity between the particles of the powder, and combined with the air resistance when the powder falls, the gap between the powder particles can be relatively increased, thereby increasing the effect of magnetic suction separation.

Description

Technical Field

[0001] The present invention relates to the field of magnetic separation technology, and in particular to a separation device and method for metal powder processing. Background Art

[0002] Metal welding powder can clean, protect, flux and increase welding strength during the welding process, so it is widely used in the welding field. However, there will be some impurities such as debris and dust in the metal welding powder, which will be mixed into the weld and affect the welding quality. Therefore, the metal welding powder needs to be separated. Metal welding powder has magnetic attraction characteristics, so the magnetic separation effect is better.

[0003] After searching, the Chinese patent publication number CN219129544U discloses a powder magnetic separation device, including a guide hopper, the input end to the output end of the guide hopper is inclined from top to bottom, a vibration motor is installed on the guide hopper, a feed hopper is installed on the upper side of the input end of the guide hopper, a rubber conveyor belt is provided on the upper side of the guide hopper, the inside of the rubber conveyor belt is flatly laid with electromagnets from one end to the other end, and the end of the rubber conveyor belt close to the output end of the guide hopper extends outward and is longer than the guide hopper.

[0004] The above patent has the following shortcomings: it uses a conveyor belt for transportation, which makes the magnetic material and the miscellaneous materials in close contact, and there is no gap between the powders, so the effect of magnetic separation is poor.

[0005] To this end, the present invention provides a separation device and method for metal powder processing. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a separation device and method for metal powder processing.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A separation device for metal powder processing, which comprises a speed-controlled feeding mechanism, a primary screening and mixing mechanism and a magnetic separation mechanism arranged in sequence from top to bottom.

[0009] The magnetic separation mechanism includes a magnetic separation shell, a magnetic attraction plate fixed to one side of the magnetic separation shell, and a "Y"-shaped partition plate arranged on the inner side of the magnetic separation shell;

[0010] A plurality of inclined guide plates are fixed to the feed inlet of the magnetic separation shell;

[0011] The primary screening and sparging mechanism comprises a transition shell and a vibration plate arranged inside the transition shell, a second shaft is fixed to the outer wall of the vibration plate, and the second shaft is connected to the transition shell through a connecting piece;

[0012] The connecting member includes a slide groove opened on the inner wall of the transition shell and a slider 1 slidably connected to the inner wall of the slide groove. The shaft 2 is rotatably connected to the slider 1. The outer wall of the shaft 2 is connected to a gear through a key. The inner wall of the slide groove is provided with teeth that can mesh with the gear.

[0013] Preferably: the magnetic attraction plate comprises a frame, an electromagnetic plate fixed to the inner wall of one side of the frame and a flexible plate fixed to the end of the frame, the inner wall of the frame is slidably connected with a collision plate, and the side wall of the collision plate is connected to the inner wall of the frame through an insulating elastomer.

[0014] Furthermore: the inner wall of the frame is slidably connected with an arc head limiting rod for limiting the collision plate, and the arc head limiting rod is connected to the inner wall of the frame through a spring.

[0015] On the basis of the above scheme: the speed-controlled unloading mechanism includes a hopper and a roller rotatably connected to the inner wall of the hopper through shaft one, the side wall of the roller is provided with a plurality of hopper grooves, and the side wall of the hopper is fixed with a motor by bolts, and the output shaft of the motor is connected to the end of shaft one through a coupling.

[0016] A better solution in the above scheme is: a turntable is fixed at the end of the first shaft, a connecting rod is rotatably connected to the outside of the non-rotation center of the turntable, the other end of the connecting rod is rotatably connected to a rocker arm, and the other end of the rocker arm is fixed to the outer wall of the second shaft.

[0017] As a further solution of the present invention: filter cores are embedded and fixed on both symmetrical inner walls of the magnetic separation shell, and a collecting cover is fixed on the side wall of the magnetic separation shell located outside one of the filter cores.

[0018] At the same time, flexible air bags are fixed to the outer walls of both sides of the slider, and the other side of the flexible air bag is fixed to the inner wall of the transition shell. The side wall of the rocker arm is welded with a plurality of air nozzles connected to the inner cavity of the collector;

[0019] One side of the flexible airbag is connected to the air nozzle through a one-way valve, and the other side of the flexible airbag is connected to the atmospheric environment through the one-way valve.

[0020] As a preferred embodiment of the present invention: the "Y"-shaped partition is connected to the magnetic separation shell through an elastic support rod, and a hydraulic damping rod is fixed to the side wall of the magnetic separation shell, and the buffer section of the hydraulic damping rod is fixed to the side wall of the "Y"-shaped partition, and flexible sheets are fixed to the sides of the magnetic separation shell and the "Y"-shaped partition, and aggregate bags are fixed to the lower sides of the magnetic separation shell, the "Y"-shaped partition and the flexible sheet.

[0021] At the same time, the inner wall of the turntable is slidably connected to two sliders 2, the side walls of the sliders 2 are fixed with electrode heads, the two electrode heads are connected through wires, and the side walls of the hopper are fixed with two resistance rings that are respectively in contact with and electrically connected to the two electrode heads, and the resistance rings and electrode heads are connected to the power supply circuit of the electromagnetic plate; and the connection point between the power supply circuit of the electromagnetic plate and the resistance ring is the outer circumferential position of the resistance ring.

[0022] As a more preferred solution of the present invention: an insulating pad is embedded in the side wall of the resistance ring;

[0023] The two sliders 2 and one of the sliders 2 on the side opposite to the rotating disk are both buckled with springs 2.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention provides a vibration plate to scatter the powder and then allows the powder to fall freely to feed the powder into the magnetic separation shell, and then provides a guide plate. Therefore, compared with the traditional conveyor belt conveying method, there is no pressure generated by gravity between the particles of the powder. Combined with the air resistance when the powder falls, the gap between the powder particles can be relatively increased, thereby increasing the effect of magnetic separation.

[0026] 2. The present invention, by providing a vibrating vibration plate, can utilize the vibration of the vibration plate combined with the relatively large density of metal to perform initial screening and stratification of the powder material, and then the metal powder layer located below falls relatively closer to the magnetic plate, thereby further increasing the separation effect, and utilizing the reciprocating rotation of the second shaft to drive the vibration plate, so that the vibration plate has both rotational vibration and linear vibration, thereby increasing the vibration separation effect.

[0027] 3. The present invention, through the start and stop control of the electromagnetic plate, has a short power-off state, so that the metal powder adsorbed by the electromagnetic plate can be reliably discharged. On the other hand, by arranging the impact plate, it can rebound and hit the flexible plate according to the short power-off state of the electromagnetic plate, so as to loosen the metal powder adhered to the surface of the flexible plate, increase the smoothness of discharge, and thus ensure reliability.

[0028] 4. The present invention, by setting a turntable, a connecting rod and a rocker arm, can utilize the rotation of shaft one to realize the rotation drive of shaft two and realize power integration. On the other hand, based on the power integration of the two, the faster the rotation of shaft one and the faster the material discharge speed, the faster the vibration speed and frequency of the corresponding vibration plate will be, thereby ensuring the reliability of primary screening separation.

[0029] 5. The present invention forms a low-speed airflow in the magnetic separation shell by utilizing the air suction of the collecting hood, so that impurities that are not affected by the magnetic attraction flow to the other side of the magnetic attraction plate along with the airflow, thereby increasing the thoroughness of separation. In addition, the airflow in the collecting hood is formed by relying on the high-frequency squeezing and pulling of the flexible airbag, which on the one hand reduces the layout of the air pump power, and on the other hand enables the airflow size and the feeding speed to be adaptively adjusted to ensure separation reliability.

[0030] 6. The present invention, by providing a resistance ring and an electrode head, utilizes the circuit composed of the resistance ring and the electrode head to control the power supply circuit of the electromagnetic plate, thereby realizing the short-term power-off function of the electromagnetic plate and enabling adaptive adjustment of the material feeding speed and the magnetism of the electromagnetic plate, thereby ensuring the reliability of separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a separation device for metal powder processing proposed by the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a magnetic separation mechanism of a separation device for metal powder processing proposed by the present invention;

[0033] Figure 3 A schematic diagram of the structure of a magnetic suction plate of a separation device for metal powder processing proposed by the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of a speed-controlled feeding mechanism of a separation device for metal powder processing proposed by the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the primary screening and mixing mechanism of a separation device for metal powder processing proposed by the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of a connecting piece of a separation device for metal powder processing proposed by the present invention;

[0037] Figure 7 A partial cross-sectional structural schematic diagram of a separation device for metal powder processing proposed by the present invention;

[0038] Figure 8 This is a schematic diagram of the turntable, rocker arm and connecting rod structure of a separation device for metal powder processing proposed by the present invention;

[0039] Fig. 9 A schematic cross-sectional view of a resistance ring and an electrode head of a separation device for metal powder processing proposed by the present invention;

[0040] Fig.10 A schematic diagram of the resistance ring structure of a separation device for metal powder processing proposed by the present invention;

[0041] Fig.11 A schematic cross-sectional structure diagram of a magnetic separation shell of a separation device for metal powder processing proposed by the present invention;

[0042] Fig.12 This is a schematic diagram of the gas path structure of a separation device for metal powder processing proposed by the present invention;

[0043] Fig.13 This is a schematic diagram of the circuit structure of a separation device for metal powder processing proposed by the present invention.

[0044] In the figure: 1. speed-controlled feeding mechanism; 2. primary screening and material mixing mechanism; 3. magnetic separation mechanism; 4. magnetic separation shell; 5. hydraulic damping rod; 6. elastic support rod; 7. flexible sheet; 8. material collecting bag; 9. "Y"-shaped partition; 10. magnetic suction plate; 11. material guide plate; 12. electromagnetic plate; 13. frame; 14. impact plate; 15. spring 1; 16. arc head limit rod; 17. flexible plate; 18. material hopper; 19. motor; 20. roller; 21. material hopper Groove; 22, shaft one; 23, transition shell; 24, vibration plate; 25, shaft two; 26, connecting piece; 27, slide groove; 28, teeth; 29, slider one; 30, gear; 31, flexible pad; 32, flexible airbag; 33, turntable; 34, rocker arm; 35, collector cover; 36, connecting rod; 37, resistance ring; 38, spring two; 39, slider two; 40, electrode head; 41, wire; 42, insulating pad; 43, filter element; 44, air nozzle. DETAILED DESCRIPTION

[0045] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] Embodiment 1:

[0048] A separation device for metal powder processing, such as Figure 1-Figure 13 As shown, it includes a speed-controlled feeding mechanism 1, a primary screening and sizing mechanism 2 and a magnetic separation mechanism 3 which are arranged in sequence from top to bottom. The magnetic separation mechanism 3 includes a magnetic separation shell 4, a magnetic attraction plate 10 fixed to one side of the magnetic separation shell 4, and a "Y"-shaped partition plate 9 arranged on the inner side of the magnetic separation shell 4.

[0049] A plurality of inclined guide plates 11 are fixed to the material inlet of the magnetic separation shell 4 .

[0050] The primary screening and mixing mechanism 2 includes a transition shell 23 and a vibration plate 24 arranged inside the transition shell 23 . A second shaft 25 is fixed to the outer wall of the vibration plate 24 . The second shaft 25 is connected to the transition shell 23 through a connecting piece 26 .

[0051] The connecting member 26 includes a slide groove 27 opened on the inner wall of the transition shell 23 and a slider 29 slidably connected to the inner wall of the slide groove 27. The shaft 25 is rotatably connected to the slider 29. The outer wall of the shaft 25 is connected to a gear 30 through a key. The inner wall of the slide groove 27 is provided with teeth 28 that can mesh with the gear 30.

[0052] The material can be conveyed to the primary screening and mixing mechanism 2 through the speed-controlled feeding mechanism 1, and the material flows into the vibration plate 24 in the transition shell 23, and then the second shaft 25 reciprocates. On the one hand, the second shaft 25 can drive the vibration plate 24 to swing back and forth, and on the other hand, the second shaft 25 can drive the gear 30 to rotate back and forth, thereby driving the vibration plate 24 to move back and forth linearly through the meshing action of the gear 30 and the teeth 28, thereby realizing the multi-directional vibration of the vibration plate 24. When the vibration plate 24 vibrates, it can make the material vibrate, so that the metal powder with relatively large density is in the lower layer, and the impurities with smaller density are in the upper layer, and the primary screening is performed. The powder after the primary screening falls from the other end of the vibration plate 24, and when falling, the material discharged from the vibration plate 24 passes through the mixing of the guide plate 11 again and falls. At this time, the magnetic suction plate 10 is energized, and the metal powder is sucked to one side of the magnetic suction plate 10 by the magnetic suction force, thereby realizing separation.

[0053] The device provides a vibration plate 24 to scatter the powder and then allows the powder to fall freely to feed the material into the magnetic separation shell 4, and then provides a guide plate 11. Therefore, compared with the traditional conveyor belt conveying method, there is no pressure generated by gravity between the particles of the powder. Combined with the air resistance when the powder falls, the gap between the powder particles can be relatively increased, thereby increasing the effect of magnetic separation.

[0054] In addition, by providing a vibrating vibration plate 24, the device can utilize the vibration of the vibration plate 24 combined with the relatively large density of metal to perform initial screening and stratification of the powder, and then the metal powder layer located below falls relatively closer to the magnetic plate 10, thereby further increasing the separation effect, and utilizing the reciprocating rotation of the shaft 25 to drive the vibration plate 24, so that the vibration plate 24 has both rotational vibration and linear vibration, thereby increasing the vibration separation effect.

[0055] To solve the reliability problem; Figure 3As shown, the magnetic plate 10 includes a frame 13, an electromagnetic plate 12 fixed to the inner wall of one side of the frame 13, and a flexible plate 17 fixed to the end of the frame 13. The inner wall of the frame 13 is slidably connected with a collision plate 14, and the side wall of the collision plate 14 is connected to the inner wall of the frame 13 through an insulating elastomer.

[0056] The inner wall of the frame 13 is slidably connected with an arc head limiting rod 16 for limiting the collision plate 14, and the arc head limiting rod 16 is connected to the inner wall of the frame 13 through a spring 15.

[0057] When the electromagnetic plate 12 is started, it attracts the impact plate 14 through magnetic attraction, and the magnetic field penetrates the flexible plate 17 to attract the metal powder. Then the electromagnetic plate 12 will be briefly powered off. At this time, on the one hand, the metal powder will fall due to gravity, and on the other hand, the impact plate 14 will rebound due to the elastic force of the insulating elastomer to overcome the resistance of the arc head limit rod 16, so that the impact plate 14 will hit the flexible plate 17.

[0058] The device controls the start and stop of the electromagnetic plate 12, which has a short power-off state, so that the metal powder adsorbed by the electromagnetic plate 12 can be discharged reliably. On the other hand, by setting the impact plate 14, it can rebound and impact the flexible plate 17 according to the short power-off state of the electromagnetic plate 12, so as to loosen the metal powder adhered to the surface of the flexible plate 17, increase the smoothness of discharge, and thus ensure reliability.

[0059] In order to solve the problem of quantitative feeding; Figure 4 As shown, the speed-controlled unloading mechanism 1 includes a hopper 18 and a roller 20 rotatably connected to the inner wall of the hopper 18 via a shaft 22, a plurality of hopper grooves 21 are provided on the side wall of the roller 20, and a motor 19 is fixed to the side wall of the hopper 18 via bolts, and the output shaft of the motor 19 is connected to the end of the shaft 22 via a coupling.

[0060] Powder can be placed inside the hopper 18 and fall into the trough 21. When the motor 19 is started, it can drive the shaft 22 to rotate, thereby driving the roller 20 to rotate, and the trough 21 loaded with powder is rotated until the powder falls, thereby realizing feeding, and the feeding speed can be controlled by controlling the rotation speed of the motor 19.

[0061] In order to solve the linkage problem; Figure 8 As shown, a turntable 33 is fixed to the end of the shaft 1 22 , a connecting rod 36 is rotatably connected to the outside of the non-rotation center of the turntable 33 , the other end of the connecting rod 36 is rotatably connected to a rocker arm 34 , and the other end of the rocker arm 34 is fixed to the outer wall of the shaft 2 25 .

[0062] When shaft 1 22 rotates, it can drive the turntable 33 to rotate, thereby driving the rocking arm 34 to rotate through the connecting rod 36, until the connecting rod 36 is parallel to one of the diameters of the turntable 33 during rotation. The turntable 33 continues to rotate, and will drive the rocking arm 34 to rotate in the opposite direction through the connecting rod 36, realizing the reciprocating swing of the rocking arm 34, thereby causing shaft 25 to reciprocate.

[0063] The device, by providing a turntable 33, a connecting rod 36 and a rocker arm 34, can utilize the rotation of shaft one 22 to realize the rotation drive of shaft two 25 and realize power integration. On the other hand, based on the power integration of the two, the faster the shaft one 22 rotates and the faster the material discharge speed, the faster the vibration speed and frequency of the corresponding vibration plate 24 will be, thereby ensuring the reliability of the initial screening separation.

[0064] In order to solve the problem of separation thoroughness; Figure 7 , 11 As shown in FIG. 12 , filter elements 43 are embedded and fixed on the inner walls on both symmetrical sides of the magnetic separation shell 4 , and a collecting cover 35 is fixed on the side wall of the magnetic separation shell 4 located outside one of the filter elements 43 .

[0065] Flexible air bags 32 are fixed to the outer walls of both sides of the slider 29, and the other side of the flexible air bags 32 is fixed to the inner wall of the transition shell 23. The side wall of the rocker arm 34 is welded with multiple air nozzles 44 connected to the inner cavity of the collecting cover 35.

[0066] One side of the flexible airbag 32 is connected to the air nozzle 44 through a one-way valve, and the other side of the flexible airbag 32 is connected to the atmosphere through a one-way valve.

[0067] A flexible pad 31 is bonded to the side wall of the slide groove 27 located inside the transition shell 23 , and the other end of the flexible pad 31 is bonded to the inner wall of the transition shell 23 .

[0068] When the slider 29 reciprocates, the flexible airbags 32 on both sides of the slider 29 are squeezed and pulled alternately. When the flexible airbag 32 is squeezed, the gas in the flexible airbag 32 is discharged into the atmosphere through the one-way valve. When the flexible airbag 32 is pulled, the gas is sucked into the air nozzle 44 through the one-way valve. With the high-frequency squeezing and pulling of the flexible airbag 32, the gas in the collecting cover 35 is continuously extracted, and the magnetic separation shell 4 then sucks gas from the filter element 43, thereby forming an airflow with a lower flow rate in the magnetic separation shell 4.

[0069] The device forms a low-speed airflow in the magnetic separation shell 4 by utilizing the air suction of the collecting cover 35, so that the impurities that are not affected by the magnetic attraction flow to the other side of the magnetic attraction plate 10 along with the airflow, thereby increasing the thoroughness of separation. In addition, the airflow in the collecting cover 35 is formed by relying on the high-frequency squeezing and pulling of the flexible airbag 32, which reduces the layout of the air pump power on the one hand, and can also realize adaptive adjustment of the airflow size and the feeding speed on the other hand, thereby ensuring the reliability of separation.

[0070] In order to solve the collection problem, the "Y"-shaped partition 9 is connected to the magnetic separation shell 4 through an elastic support rod 6, and a hydraulic damping rod 5 is fixed to the side wall of the magnetic separation shell 4, and the buffer section of the hydraulic damping rod 5 is fixed to the side wall of the "Y"-shaped partition 9, and a flexible sheet 7 is fixed to the side of the magnetic separation shell 4 and the "Y"-shaped partition 9, and an aggregate bag 8 is fixed to the lower side of the magnetic separation shell 4, the "Y"-shaped partition 9, and the flexible sheet 7.

[0071] When the present embodiment is in use, the powder can be placed inside the hopper 18, and the powder will fall into the trough 21. When the motor 19 is started, it can drive the shaft 22 to rotate, thereby driving the roller 20 to rotate, and the trough 21 loaded with the powder is rotated until the material falls, so as to realize feeding. The material discharge speed can be controlled by controlling the speed of the motor 19. The material flows into the vibration plate 24 in the transition shell 23. When the shaft 22 rotates, it can drive the turntable 33 to rotate, thereby driving the rocker arm 34 to rotate through the connecting rod 36, until the connecting rod 36 is parallel to one of the diameters of the turntable 33 during rotation, and the turntable 33 continues to rotate, and the connecting rod 36 drives the rocking arm 34 to rotate in the opposite direction, so that the rocking arm 34 swings back and forth, thereby making the shaft 25 reciprocate. On the one hand, the shaft 25 can drive the vibration plate 24 to swing back and forth, and on the other hand, the shaft 25 can drive the gear 30 to rotate back and forth, thereby driving the vibration plate 24 to move back and forth in a straight line through the meshing action of the gear 30 and the teeth 28, thereby realizing the multi-directional vibration of the vibration plate 24. When the vibration plate 24 vibrates, it can make the material vibrate, so that the metal powder with relatively large density is in the lower layer, and the impurities with smaller density are in the upper layer, for preliminary screening. The powder falls from the other end of the vibration plate 24, and when falling, the material discharged from the vibration plate 24 passes through the material guide plate 11 again and then falls. When the electromagnetic plate 12 is started, it adsorbs the impact plate 14 through magnetic attraction, and the magnetic field penetrates the flexible plate 17 to adsorb the metal powder. Then the electromagnetic plate 12 is briefly powered off. At this time, on the one hand, the metal powder falls due to gravity, and on the other hand, the impact plate 14 is rebounded by the elastic force of the insulating elastic body to overcome the resistance of the arc head limit rod 16, so that the impact plate 14 hits the flexible plate 17, and when the slider 29 reciprocates, the flexible airbags 32 on both sides of the slider 29 are It is squeezed and pulled alternately. When the flexible airbag 32 is squeezed, the gas in the flexible airbag 32 is discharged into the atmosphere through the one-way valve. When the flexible airbag 32 is pulled, the gas is sucked into the air nozzle 44 through the one-way valve. With the high-frequency squeezing and pulling of the flexible airbag 32, the gas in the collecting cover 35 is continuously extracted, and the magnetic separation shell 4 then sucks gas from the filter element 43, thereby forming an airflow with a lower flow rate in the magnetic separation shell 4, so that the metal powder falls into the collecting bag 8 from the side close to the magnetic suction plate 10, and the impurities fall into the other collecting bag 8 from the side away from the magnetic suction plate 10, completing the separation and collection.

[0072] Embodiment 2:

[0073] A separation device for metal powder processing, such as Figure 1-Figure 13As shown, in order to solve the problem of electrical control; this embodiment makes the following improvements on the basis of embodiment 1: the inner wall of the turntable 33 is slidably connected with two sliders 2 39, the side walls of the sliders 2 39 are fixed with electrode heads 40, the two electrode heads 40 are connected through a wire 41, and the side walls of the hopper 18 are fixed with two resistance rings 37 that are respectively in contact with and electrically connected to the two electrode heads 40, and the resistance rings 37 and the electrode heads 40 are connected to the power supply circuit of the electromagnetic plate 12.

[0074] The connection point between the power supply circuit of the electromagnetic plate 12 and the resistance ring 37 is the outer circumference of the resistance ring 37 .

[0075] An insulating pad 42 is embedded in the side wall of the resistor ring 37 .

[0076] The two sliders 2 39 and one of the sliders 2 39 on the side opposite to the rotating disk 33 are both buckled with springs 2 38 .

[0077] When this embodiment is in use, the electrode head 40 contacts the resistance ring 37, so that the power supply circuit of the electromagnetic plate 12 is connected, and when the rotation speed of the turntable 33 is accelerated and the material discharge speed is accelerated, the rotation speed of the slider 39 is also increased, so that the centrifugal force on the slider 39 increases, and it overcomes the elastic force of the spring 38 and moves toward the outer circumference, so that the matching position of the electrode head 40 and the resistance ring 37 is changed, and the contact direction of the electrode head 40 and the resistance ring 37 is closer to the outer circumference of the resistance ring 37, so that the resistance value of the resistance ring 37 connected to the circuit becomes smaller, thereby reducing the voltage division of the resistance ring 37, increasing the voltage division of the electromagnetic plate 12, and increasing the magnetism, and when the electrode head 40 rotates to the position of the insulating pad 42, the circuit is disconnected.

[0078] The device, by setting a resistance ring 37 and an electrode head 40, uses the circuit composed of them to control the power supply circuit of the electromagnetic plate 12, so as to realize the short-term power-off function of the electromagnetic plate 12 and enable the feeding speed and the magnetism of the electromagnetic plate 12 to be adaptively adjusted, thereby ensuring the reliability of separation.

[0079] Embodiment 3:

[0080] A method for using a separation device for metal powder processing, such as Figure 1-Figure 13 As shown, it includes the following steps:

[0081] S1: placing the mixed powder into the hopper 18;

[0082] S2: Start the motor 19 to quantitatively discharge, preliminarily screen, and magnetically separate the powder;

[0083] S3: Separate the metal powder and impurities from the two aggregate bags 8 respectively.

[0084] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A separation device for metal powder processing, comprising a speed-controlled feeding mechanism (1), a primary screening and sieving mechanism (2) and a magnetic separation mechanism (3) arranged in order from top to bottom, characterized in that: The magnetic separation mechanism (3) comprises a magnetic separation shell (4), a magnetic attraction plate (10) fixed to one side of the magnetic separation shell (4), and a "Y"-shaped partition (9) arranged on the inner side of the magnetic separation shell (4); A plurality of inclined material guide plates (11) are fixed to the material inlet of the magnetic separation shell (4); The primary screening and material mixing mechanism (2) comprises a transition shell (23) and a vibration plate (24) arranged inside the transition shell (23); a second shaft (25) is fixed to the outer wall of the vibration plate (24); and the second shaft (25) is connected to the transition shell (23) via a connecting piece (26); The connecting member (26) comprises a slide groove (27) formed on the inner wall of the transition housing (23) and a slider (29) slidably connected to the inner wall of the slide groove (27); the second shaft (25) is rotatably connected to the slider (29); the outer wall of the second shaft (25) is connected to a gear (30) via a key; and the inner wall of the slide groove (27) is provided with teeth (28) that can mesh with the gear (30); The magnetic attraction plate (10) comprises a frame (13), an electromagnetic plate (12) fixed to an inner wall of one side of the frame (13), and a flexible plate (17) fixed to an end of the frame (13); a striker plate (14) is slidably connected to the inner wall of the frame (13); and a side wall of the striker plate (14) is connected to the inner wall of the frame (13) via an insulating elastic body; The inner wall of the frame (13) is slidably connected to an arc head limiting rod (16) for limiting the position of the collision plate (14), and the arc head limiting rod (16) is connected to the inner wall of the frame (13) via a spring 1 (15); The speed-controlled material discharge mechanism (1) comprises a material hopper (18) and a roller (20) rotatably connected to the inner wall of the material hopper (18) via a shaft (22), a plurality of material hopper grooves (21) are provided on the side wall of the roller (20), and a motor (19) is fixed to the side wall of the material hopper (18) via bolts, and an output shaft of the motor (19) is connected to the end of the shaft (22) via a coupling; A rotating disk (33) is fixed at the end of the first shaft (22), a connecting rod (36) is rotatably connected to the outer side of the non-rotation center of the rotating disk (33), the other end of the connecting rod (36) is rotatably connected to a rocker arm (34), and the other end of the rocker arm (34) is fixed to the outer wall of the second shaft (25).

2. A separation device for metal powder processing according to claim 1, characterized in that: Filter cores (43) are embedded and fixed on both symmetrical inner walls of the magnetic separation shell (4), and a flow collecting cover (35) is fixed on a side wall of the magnetic separation shell (4) located outside one of the filter cores (43).

3. A separation device for metal powder processing according to claim 2, characterized in that: Flexible airbags (32) are fixed to the outer walls of both sides of the slider (29), and the other side of the flexible airbag (32) is fixed to the inner wall of the transition shell (23). The side wall of the rocker arm (34) is welded with a plurality of air nozzles (44) connected to the inner cavity of the collecting cover (35); One side of the flexible airbag (32) is connected to the air nozzle (44) via a one-way valve, and the other side of the flexible airbag (32) is connected to the atmospheric environment via the one-way valve.

4. A separation device for metal powder processing according to claim 1, characterized in that: The "Y"-shaped partition (9) is connected to the magnetic separation shell (4) via an elastic support rod (6), and a hydraulic damping rod (5) is fixed to the side wall of the magnetic separation shell (4), and a buffer section of the hydraulic damping rod (5) is fixed to the side wall of the "Y"-shaped partition (9). A flexible sheet (7) is fixed to the side of the magnetic separation shell (4) and the "Y"-shaped partition (9), and an aggregate bag (8) is fixed to the lower side of the magnetic separation shell (4), the "Y"-shaped partition (9), and the flexible sheet (7).

5. The separation device for metal powder processing according to claim 1, characterized in that: The inner wall of the rotating disk (33) is slidably connected to two sliders (39), the side wall of the sliders (39) is fixed with an electrode head (40), the two electrode heads (40) are connected via a wire (41), and the side wall of the hopper (18) is fixed with two resistance rings (37) respectively in contact with and electrically connected to the two electrode heads (40), and the resistance rings (37) and the electrode heads (40) are connected to the power supply circuit of the electromagnetic plate (12); and the connection point between the power supply circuit of the electromagnetic plate (12) and the resistance ring (37) is the outer circumferential position of the resistance ring (37).

6. A separation device for metal powder processing according to claim 5, characterized in that: The side of the resistance ring (37) The wall is embedded with an insulating mat (42); The two sliders (39) and one of the sliders (39) on the side opposite to the rotating disk (33) are both buckled with springs (38).

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