Double-drum magnetic separator

Abstract

The utility model discloses a double-drum magnetic separator, which comprises a magnetic separation tank, drums, an ore separation frame and a feed pipe, the drums are respectively arranged on the left side and the right side in the magnetic separation tank, a mineral channel is reserved between the two drums, the ore separation frame is arranged above the mineral channel, the feed pipe is arranged above the middle part of the ore separation frame, and the feed pipe is arranged above the middle part of the ore separation frame. The front part and the rear part of each roller are respectively provided with external threads with opposite rotating directions, the two rollers rotate around a direction in which the external threads can push ores to move downwards and two ends, the magnetic separation groove is fixedly provided with a permanent magnet extending into the rollers, the bottom of the magnetic separation groove is provided with a first discharge port, the side wall of the magnetic separation groove is provided with a second discharge port, and the first discharge port is communicated with the second discharge port. The bottom of the second discharge port is connected with a guide plate arranged on the side face of the roller. According to the double-drum magnetic separator, ore is dispersed on the two sides through rotation of the drums, the two drums conduct magnetic separation at the same time, and the magnetic separation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic separators, in particular to a double-drum magnetic separator. Background Art

[0002] In the process of ore processing and recovery, magnetic separation is a common and important physical separation method, mainly used to separate magnetic mineral components from mixed ores. Traditional magnetic separation equipment, such as single-drum magnetic separators, although can achieve magnetic separation of ores to a certain extent, the ores are often only affected by the magnetic force of one drum, thus affecting the magnetic separation effect. Secondly, in the process of magnetic separation by traditional single-drum magnetic separators, the conveying and dispersion of ores often rely on external mechanisms, such as vibrating feeders, etc., which not only increases the complexity and maintenance cost of the equipment, but also limits the improvement of magnetic separation efficiency. Summary of the Utility Model

[0003] Aiming at the above-mentioned prior art, the utility model aims to provide a double-drum magnetic separator, which uses the rotation of the drum itself to disperse the ores on both sides, and the two drums perform magnetic separation simultaneously, greatly improving the magnetic separation efficiency.

[0004] To achieve the above object, the technical solution of the embodiment of the utility model is realized as follows:

[0005] A double-drum magnetic separator includes a magnetic separation tank, drums, a mineral separation frame and a feed pipe. The drums are respectively arranged on the left side and the right side in the magnetic separation tank. A mineral passage is reserved between the two drums. The mineral separation frame is arranged above the mineral passage. The feed pipe is arranged above the middle of the mineral separation frame. The front part and the rear part of the drum are respectively provided with external threads with opposite helix directions. The two drums rotate in a direction that can make the external threads push the ores downward and move to both ends. The magnetic separation tank is fixed with permanent magnets extending into the drums. The bottom of the magnetic separation tank is provided with a first discharge port, and the side wall is provided with a second discharge port. The bottom of the second discharge port is connected with a guide plate arranged on the side of the drum.

[0006] Further, the magnetic separation tank is provided with a first motor. The output shaft of the first motor is connected with one of the drums. The other drum is provided with a first gear. The first gear meshes with a second gear. The second gear is connected with a second pulley. The output shaft of the first motor is provided with a first pulley. The first pulley drives the second pulley through a transmission belt.

[0007] Further, it also includes a hopper, a first spiral shaft and a second motor. The bottom of the hopper is communicated with the feed pipe. The first spiral shaft is arranged in the feed pipe. The second motor is connected with the first spiral shaft. The side wall of the feed pipe is communicated with a water inlet pipe.

[0008] Further, it further includes a discharge pipe, a second spiral shaft, and a third motor. The discharge pipe is inclined upward. The second discharge port is connected to the bottom of the discharge pipe. The second spiral shaft is arranged inside the discharge pipe, and the second spiral shaft is connected to the third motor.

[0009] Further, a mineral separation plate is provided at the top of the mineral passage. The mineral separation plate includes an inverted V-shaped portion, an arc-shaped plate, a fixing rod, and a support bar. The arc-shaped plates are respectively arranged on both sides of the inverted V-shaped portion. The arc surface of the arc-shaped plate is concentric with the roller. The arc-shaped plate is connected to the fixing rod through the support bar. The fixing rod is connected to the magnetic separation tank. The inverted V-shaped portion and the support bar are elastic.

[0010] Further, the radian of the arc-shaped plate is 0.1 - 0.15π.

[0011] Further, the arc-shaped plate is elastic.

[0012] The beneficial effects of the present utility model are as follows: On the side close to the mineral passage of both rollers, they rotate downward. When rotating, they will drive the ore to move downward. At the same time, when both rollers rotate, the external threads in front of the feed pipe push the ore forward, and the external threads behind the feed pipe push the ore backward. When the rollers rotate, they drive the ore to move forward and backward from the middle. The ore is evenly distributed and passes through the mineral passage, which can improve the magnetic separation efficiency of the ore. In the magnetic separation of the present utility model, both rollers rotate simultaneously, and the magnetic separation efficiency is higher. When the rollers rotate, the magnetic ore is attracted by the permanent magnet and thus adsorbed on the outer surface of the roller. After the ore rotates with the roller to above the guide plate, the ore moves away from the permanent magnet and drops onto the guide plate, and finally is discharged from the second discharge port along the guide plate. The ore without magnetism or with weak magnetism sinks to the bottom of the magnetic separation tank and is finally discharged from the first discharge port. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a double-drum magnetic separator in an embodiment of the present application;

[0014] Figure 2 It is a schematic cross-sectional structural diagram of a double-drum magnetic separator in an embodiment of the present application;

[0015] Figure 3 It is a schematic top view structural diagram of a roller and a mineral separation frame in an embodiment of the present application;

[0016] Explanation of the Reference Numerals in the Drawings:

[0017] 1. Magnetic separation tank; 2. Roller; 3. Ore separation frame; 4. Feed pipe; 5. Mineral passage; 6. External thread; 7. Permanent magnet; 8. First discharge port; 9. Second discharge port; 10. Guide plate; 11. First motor; 12. First gear; 13. Second gear; 14. Second pulley; 15. First pulley; 16. Transmission belt; 17. Hopper; 18. First spiral shaft; 19. Second motor; 20. Discharge pipe; 21. Second spiral shaft; 22. Third motor; 23. Ore separation plate; 24. Inverted V-shaped part; 25. Arc-shaped plate; 26. Fixed rod; 27. Support bar. Specific embodiments

[0018] The technical solution of the present utility model will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. In the following description, the expression "some embodiments" is used, which describes a subset of all possible embodiments. However, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "inner", "outer", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0020] Embodiment 1

[0021] Please refer to the attached Figure 1 , this application provides a double-drum magnetic separator, including a magnetic separation tank 1, a roller 2, an ore separation frame 3 and a feed pipe 4. The left and right sides inside the magnetic separation tank 1 are respectively provided with the roller 2. A mineral passage 5 is reserved between the two rollers 2. The ore separation frame 3 is provided above the mineral passage 5. The feed pipe 4 is provided above the middle of the ore separation frame 3. The front and rear parts of the roller 2 are respectively provided with external threads 6 with opposite rotation directions. The two rollers 2 can rotate in a direction that enables the external threads 6 to push the ore downward and move towards both ends. The magnetic separation tank 1 is fixed with a permanent magnet 7 extending into the roller 2. The bottom of the magnetic separation tank 1 is provided with a first discharge port 8, and the side wall is provided with a second discharge port 9. The bottom of the second discharge port 9 is connected to a guide plate 10 provided on the side of the roller 2.

[0022] The ore to be separated by magnetic separation falls from the feed pipe 4 to the middle of the ore distributing frame 3 and then enters the mineral channel 5 from the bottom of the ore distributing frame 3. The ore that does not enter the mineral channel 5 accumulates between the two drums 2. As the drums 2 rotate, the ore particles pass through the mineral channel 5. When the drums 2 rotate, there is a frictional force between the external threads 6 and the ore particles. The frictional force causes the ore particles to pass downward through the mineral channel 5 and also pushes the ore particles toward the front and rear ends of the drums 2, so that the ore particles are evenly distributed on the mineral channel 5. It can be understood that the sides of the two drums 2 close to the mineral channel 5 both rotate downward, and the rotation will drive the ore to move downward. At the same time, when the two drums 2 rotate, the external threads 6 in front of the feed pipe 4 push the ore forward, and the external threads 6 behind the feed pipe 4 push the ore backward. When the drums 2 rotate, they drive the ore to move forward and backward from the middle. After the ore is evenly distributed in the mineral channel 5, it passes through the mineral channel 5, which can improve the magnetic separation efficiency of the ore. In the present utility model, when performing magnetic separation, the two drums 2 rotate simultaneously, and the magnetic separation efficiency is higher. When the drums 2 rotate, the magnetic ore is attracted by the permanent magnet 7 and thus adsorbed on the outer surface of the drums 2. After the ore rotates with the drums 2 to above the guide plate 10, the ore moves away from the permanent magnet 7 and falls onto the guide plate 10, and finally is discharged from the second discharge port 9 along the guide plate 10. The ore without magnetism or with weak magnetism sinks to the bottom of the magnetic separation tank 1 and is finally discharged from the first discharge port 8. The present utility model uses the rotation of the drums 2 itself to disperse the ore on both sides, and the two drums 2 perform magnetic separation simultaneously, greatly improving the magnetic separation efficiency.

[0023] Specifically, the magnetic separation tank 1 is provided with a first motor 11. The output shaft of the first motor 11 is connected to one of the drums 2. The other drum 2 is provided with a first gear 12. The first gear 12 meshes with a second gear 13. The second gear 13 is connected to a second pulley 14. The output shaft of the first motor 11 is provided with a first pulley 15. The first pulley 15 drives the second pulley 14 through a transmission belt 16. When the first motor 11 works, it drives one drum 2 to rotate, and at the same time drives the other drum 2 to rotate through the first pulley 15, the transmission belt 16, the second pulley 14, the second gear 13 and the first gear 12. The two drums 2 rotate in opposite directions. Since the two drums 2 are located on different sides of the ore channel, rotating in opposite directions can ensure that the two drums 2 push the ore in the same direction.

[0024] Specifically, it further includes a hopper 17, a first screw shaft 18 and a second motor 19. The bottom of the hopper 17 is communicated with the feed pipe 4. The first screw shaft 18 is arranged in the feed pipe 4. The second motor 19 is connected to the first screw shaft 18. A water inlet pipe is communicated with the side wall of the feed pipe 4. When the second motor 19 rotates, it drives the first screw shaft 18 to rotate. When the first screw shaft 18 rotates, it pushes the ore in the feed pipe 4 downward, so as to discharge the ore into the ore separation frame 3. A water inlet pipe is communicated with the side wall of the feed pipe 4. By using the water inlet pipe to supply water, the feed pipe 4 can be lubricated to reduce the friction force, and the magnetic separation can also be carried out in water to reduce dust and friction.

[0025] Specifically, it further includes a discharge pipe 20, a second screw shaft 21 and a third motor 22. The discharge pipe 20 is inclined upward. The second discharge port 9 is connected to the bottom of the discharge pipe 20. The second screw shaft 21 is arranged in the discharge pipe 20. The second screw shaft 21 is connected to the third motor 22. When the third motor 22 rotates, it drives the second screw shaft 21 to rotate. When the second screw shaft 21 rotates, it pushes the ore particles in the discharge pipe 20 upward and finally discharges them from the discharge pipe 20.

[0026] Embodiment 2

[0027] Please refer to the attached Figure 1 In this embodiment, the difference from Embodiment 1 is that a mineral separation plate 23 is provided at the top of the mineral passage 5. The mineral separation plate 23 includes an inverted V-shaped part 24, an arc plate 25, a fixing rod 26 and a support bar 27. The arc plates 25 are respectively arranged on both sides of the inverted V-shaped part 24. The arc surface of the arc plate 25 is concentric with the roller 2. The arc plate 25 is connected to the fixing rod 26 through the support bar 27. The fixing rod 26 is connected to the magnetic separation tank 1. The inverted V-shaped part 24 and the support bar 27 are elastic. After the ore falls into the mineral passage 5, it is separated into two parts by the mineral separation plate 23, and the two parts are respectively in contact with different rollers 2. At the same time, arc plates 25 are arranged on both sides of the inverted V-shaped part 24. When encountering large-particle ore, the inverted V-shaped part 24 and the support bar 27 can deform, and the arc plate 25 moves towards the middle of the ore passage, so that the large-particle ore can pass through smoothly. The arc plate 25 increases the contact time between the ore and the roller 2, so that the magnetic ore can be adsorbed on the roller 2.

[0028] Specifically, the radian of the arc plate 25 is 0.1 - 0.15π. The ore that is not adsorbed can smoothly break away from the arc plate 25 and fall.

[0029] Specifically, the arc plate 25 is elastic. The arc plate 25 deforms towards the middle of the ore passage, so that the large-particle ore can pass through smoothly.

[0030] The above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A double-drum magnetic separator, characterized in that: The invention comprises a magnetic separation tank (1), a roller (2), a separation frame (3) and a feed pipe (4), wherein the rollers (2) are respectively arranged on the left and right sides of the magnetic separation tank (1), a mineral channel (5) is reserved between the two rollers (2), the separation frame (3) is arranged above the mineral channel (5), the feed pipe (4) is arranged above the middle of the separation frame (3), the front and rear parts of the rollers (2) are respectively arranged on external threads (6) with opposite rotation directions, the two rollers (2) rotate around the direction in which the external threads (6) can push the ore downward and move at both ends, the magnetic separation tank (1) is fixed with a permanent magnet (7) extending into the roller (2), the bottom of the magnetic separation tank (1) is arranged at a first discharge port (8), the side wall is arranged at a second discharge port (9), and the bottom of the second discharge port (9) is connected to a guide plate (10) arranged on the side of the roller (2).

2. A double-drum magnetic separator according to claim 1, characterized in that: The magnetic separation tank (1) is provided with a first motor (11), the output shaft of the first motor (11) is connected to one of the rollers (2), the other roller (2) is provided with a first gear (12), the first gear (12) is meshed with a second gear (13), the second gear (13) is connected to a second pulley (14), the output shaft of the first motor (11) is provided with a first pulley (15), and the first pulley (15) drives the second pulley (14) through a transmission belt (16).

3. A double-drum magnetic separator according to claim 1, characterized in that: It also includes a hopper (17), a first screw shaft (18) and a second motor (19); the bottom of the hopper (17) is connected to the feed pipe (4); the first screw shaft (18) is arranged in the feed pipe (4); the second motor (19) is connected to the first screw shaft (18); and the side wall of the feed pipe (4) is connected to a water inlet pipe.

4. A double-drum magnetic separator according to claim 1, characterized in that: It also includes a discharge pipe (20), a second screw shaft (21) and a third motor (22); the discharge pipe (20) is inclined upward, the second discharge port (9) is connected to the bottom of the discharge pipe (20), a second screw shaft (21) is provided in the discharge pipe (20), and the second screw shaft (21) is connected to the third motor (22).

5. A double-drum magnetic separator according to claim 1, characterized in that: A separation plate (23) is provided on the top of the mineral passage (5), and the separation plate (23) includes an inverted V-shaped portion (24), an arc-shaped plate (25), a fixing rod (26) and a support bar (27). The arc-shaped plates (25) are provided on both sides of the inverted V-shaped portion (24), and the arc-shaped surface of the arc-shaped plate (25) is cocentric with the drum (2). The arc-shaped plate (25) is connected to the fixing rod (26) through the support bar (27), and the fixing rod (26) is connected to the magnetic separation tank (1). The inverted V-shaped portion (24) and the support bar (27) are elastic.

6. A double-drum magnetic separator according to claim 5, characterized in that: The arc angle of the arc plate (25) is 0.1-0.15π.

7. A double-drum magnetic separator according to claim 5, characterized in that: The arc-shaped plate (25) is elastic.

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