Rotary friction electrostatic separator

Abstract

The utility model belongs to the technical field of sorting machines, and particularly relates to a rotary friction electrostatic sorting machine which comprises a vibration feeder, a discharging pipe is arranged at the lower end of the vibration feeder, a rotary friction particle electrified chamber is arranged at the lower end of the discharging pipe, and a high-voltage electric field sorting chamber is arranged at the lower end of the rotary friction particle electrified chamber. Four vertical cylindrical electrodes are arranged in the high-voltage electric field sorting chamber, and gaps among the four vertical cylindrical electrodes form a sorting channel. According to the electrostatic friction separation equipment, the two pairs of vertical cylindrical electrode structures are arranged in the high-voltage electric field separation chamber, so that the generated electric field is more uniform; the problem that strong electrostatic field impact may occur between high-charge particles and electrodes of the separator, so that the particles are projected into wrong compartments of the collector is solved, and necessary conditions are provided for efficient triboelectric separation of material particles.

Description

Technical Field

[0001] The utility model relates to the technical field of separators, in particular to a rotary friction electrostatic separator. Background Art

[0002] As we all know, the rotary friction electrostatic separator is a device commonly used for solid material sorting. It uses the difference in friction and electrostatic force between materials to effectively separate different components in the mixed material. The rotary friction electrostatic separator is widely used in fields such as ores, and can achieve efficient and accurate material sorting, improve resource utilization and product quality.

[0003] Patent publication CN113457851A discloses a rotary friction electrostatic separator, comprising: a material receiver; a rotary friction particle generator connected to the material receiver, comprising a charging chamber and a rotating roller disposed within the charging chamber; and a particle separation chamber connected to the rotary friction particle generator, wherein a rotating electrode is disposed within the particle separation chamber. The rotating electrodes are disposed on one and / or both sides of the particle separation chamber. This rotary friction electrostatic separator offers higher charging efficiency and better separation results.

[0004] However, existing rotary friction electrostatic separators also have certain shortcomings. First, most existing rotary friction electrostatic separators use a pair of vertical cylindrical electrode structures or parallel plate electrode structures to sort materials. The pair of vertical cylindrical electrode structures will result in a low electrostatic field intensity, resulting in low particle charging efficiency, low sorting product accuracy, and inability to effectively sort particles. In addition, the parallel plate electrode structure may cause strong electrostatic field impacts between highly charged particles and the separator electrodes. In most cases, after the impact between the particles and the electrodes, the particles will be projected into the wrong compartment of the collector. This undesirable behavior during the separation process greatly reduces the purity of the product recovered in the collector of the device.

[0005] Secondly, most of the existing rotary friction electrostatic separators use a straight discharge pipe to discharge minerals. Due to the influence of factors such as actual production needs and operating conditions, the discharge amount of minerals changes in real time, and the straight discharge pipe is difficult to regulate the discharge amount. Utility Model Content

[0006] The purpose of the present utility model is to provide a rotary friction electrostatic separator, which solves the problem that most existing rotary friction electrostatic separators use a pair of vertical cylindrical electrode structures or parallel plate electrode structures to sort and process materials, and the pair of vertical cylindrical electrode structures will cause the electrostatic field intensity to be relatively small, resulting in low particle charging efficiency, low sorting product accuracy, and inability to effectively sort the particles. In addition, the parallel plate electrode structure may cause a strong electrostatic field impact between high-charged particles and the electrodes of the separator. In most cases, after the impact between the particles and the electrodes, the particles will be projected into the wrong compartment of the collector. This undesirable behavior during the separation process greatly reduces the purity of the product recovered in the collector of the device; and solves the problem that most existing rotary friction electrostatic separators use a straight-through discharge pipe to discharge minerals. Due to the influence of factors such as actual production needs and operating conditions, the discharge amount of minerals changes in real time, and the straight-through discharge pipe is difficult to regulate and control the discharge amount.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotary friction electrostatic separator, comprising a vibrating feeder, a feed pipe is provided at the lower end of the vibrating feeder, a rotary friction particle charging chamber is provided at the lower end of the feed pipe, a high-voltage electric field sorting chamber is provided at the lower end of the rotary friction particle charging chamber, four vertical cylindrical electrodes are provided inside the high-voltage electric field sorting chamber, the gaps between the four vertical cylindrical electrodes form a sorting channel, an airflow straightening device is provided at the inner top of the high-voltage electric field sorting chamber, the lower end of the high-voltage electric field sorting chamber is connected to a product collecting device through a first pipe, a vacuum source is provided on the right side of the high-voltage electric field sorting chamber, and the vacuum source and the product collecting device are connected through a second pipe;

[0008] The right side of the discharge pipe is fixedly connected to a mounting cylinder, the right end of the mounting cylinder contacts a cylinder cover, the left end of the cylinder cover is fixedly installed with a motor, the interior of the discharge pipe is rotatably connected to a rotating shaft, the rotating shaft contacts the output shaft of the motor, the outer side of the rotating shaft is fixedly sleeved with a rotating disk, the rotating disk is rotatably connected to the discharge pipe, and a positioning mechanism is jointly provided on the rotating shaft and the mounting cylinder.

[0009] The cam is fixedly mounted on the left side of the motor and is located at the upper side of the motor, and the cam is fixedly mounted on the mounting sleeve, the cam being slidably connected to the mounting sleeve, the upper end of the cam being fixedly mounted on the mounting sleeve, the lower end of the cam being fixedly mounted on the mounting sleeve, the cam being slidably connected to ...

[0010] Preferably, one end of the second spring is welded to the end plate, and the other end of the second spring is welded to the mounting plate of the insert block. By setting the second spring, the insert block can be tightened.

[0011] Preferably, a block is fixedly connected to the right end of the rotating shaft, and the block is slidably connected to the output shaft of the motor. Through the setting of the block, the output shaft of the motor can be plugged in for use.

[0012] The outer wall of the fixing cylinder is provided with a positioning hole, and the outer wall of the fixing cylinder is fixedly sleeved with a connecting disk, and the connecting disk is rotatably connected to the fixing cylinder, and a spring 1 is welded inside the connecting disk, and a positioning ball is welded on the upper end of the spring 1, and the positioning ball is slidably connected to the positioning hole, and the output shaft is driven by the motor to rotate to drive the block to rotate, thereby driving the rotating shaft to rotate, and finally driving the rotating disk to rotate, thereby adjusting the angle of the rotating disk, and thereby regulating the feeding amount of the mineral. In this process, when the rotating shaft rotates, it can drive the connecting disk to rotate, and under the squeezing of the inner wall of the positioning hole, it can push the positioning ball, thereby pushing the spring 1 to deform, and finally causing the positioning ball to disengage from the positioning hole. Under the action of force, the positioning ball slides along the inner wall of the fixing cylinder, and when the positioning ball slides into the next positioning hole, the spring 1 recovers its deformation to push the positioning ball to insert into the positioning hole, thereby limiting the connecting disk, and thereby finely controlling the position of the rotating disk.

[0013] Preferably, a plurality of positioning holes are provided, and the plurality of positioning holes are arranged in a circular array on the mounting tube. The provision of the positioning holes facilitates the use of the positioning balls for clamping.

[0014] Preferably, the four vertical cylindrical electrodes are fixedly connected to the bottom of the organic glass shell set inside the high-voltage electric field sorting chamber, the height of the four vertical cylindrical electrodes is lower than the height of the high-voltage electric field sorting chamber, and the height of the four vertical cylindrical electrodes is consistent with the height of the organic glass shell set inside the high-voltage electric field sorting chamber. Two vertical cylindrical electrodes are installed in parallel on the left and right sides of the organic glass shell set inside the high-voltage electric field sorting chamber to form a material sorting channel.

[0015] Preferably, the gap between the two pairs of vertical cylindrical electrodes installed in parallel on the left and right sides is adjustable, so that the width of the material separation channel can be adjusted.

[0016] Preferably, the vertical cylindrical electrode is electrically connected to a high-voltage power supply, and the high-voltage power supply is fixedly connected to a fixed bracket provided on the high-voltage electric field sorting chamber, so that the vertical cylindrical electrode is energized to form a high-voltage electrostatic field.

[0017] Preferably, the vertical cylindrical electrode is detachable, and can be replaced when worn out after long-term use.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The utility model can drive the rotating shaft to rotate through the coordinated use of motors, blocks and other structures, so as to drive the rotating disk to rotate, and then adjust the angle of the rotating disk, and regulate the mineral unloading beam. Under the action of positioning holes, positioning balls and other structures, the connecting disk can be limited, and the position of the rotating disk can be finely controlled.

[0020] 2. The utility model pulls the end plate upward to move the plug block, causing the spring 2 to deform, eventually causing the plug block to separate from the connecting plate. The cylinder cover can be pulled away from the mounting cylinder, and the motor can be quickly dismantled, making it easier for operators to inspect and use it.

[0021] 3. The utility model makes the generated electric field more uniform by setting two pairs of vertical cylindrical electrode structures inside the high-voltage electric field sorting chamber, solving the problem that when a strong electrostatic field is applied in the sorting chamber of the electrostatic friction sorting equipment with a traditional electrode plate structure, a strong electrostatic field impact may occur between the highly charged particles and the electrodes of the separator, causing the particles to be projected into the wrong compartment of the collector, thereby providing the necessary conditions for achieving efficient friction electric separation of material particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0023] Figure 2 This is a top view of the high-voltage electric field separation chamber of the present utility model;

[0024] Figure 3 This is a schematic diagram of the electric field of two pairs of vertical cylindrical electrodes of the present invention;

[0025] Figure 4 For the utility model Figure 1 A sectional perspective view of a feed pipe;

[0026] Figure 5 For the utility model Figure 1 Magnified view of the rotating disk;

[0027] Figure 6 For the utility model Figure 5 A magnified view of point A;

[0028] Figure 7 For the utility model Figure 5 Enlarged view of point B.

[0029] In the figure: 1. Vibrating feeder; 2. Feeding pipe; 3. Rotating friction particle charging chamber; 4. High-voltage electric field sorting chamber; 5. Product collecting device; 6. Vacuum source; 7. Mounting cylinder; 8. Cylinder cover; 9. Motor; 10. Rotating shaft; 11. Rotating disk; 12. Block; 13. Positioning mechanism; 14. Connecting plate; 15. Fixed cylinder; 16. End disk; 17. Insert block; 18. Fixed disk; 19. Spring 2; 20. Vertical cylindrical electrode; 131. Positioning hole; 132. Connecting disk; 133. Spring 1; 134. Positioning ball. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7, a rotary friction electrostatic separator comprises a vibrating feeder 1, a feeding pipe 2 is provided at the lower end of the vibrating feeder 1, a rotary friction particle charging chamber 3 is provided at the lower end of the feeding pipe 2, a high-voltage electric field sorting chamber 4 is provided at the lower end of the rotary friction particle charging chamber 3, four vertical cylindrical electrodes 20 are provided inside the high-voltage electric field sorting chamber 4, and the gaps between the four vertical cylindrical electrodes 20 form a sorting channel. An airflow straightening device is provided at the top inner side of the high-voltage electric field sorting chamber 4, and the lower end of the high-voltage electric field sorting chamber 4 is connected to a product collecting device 5 through a pipe 1, and a vacuum source 6 is provided on the right side of the high-voltage electric field sorting chamber 4, and the vacuum source 6 is connected to the product collecting device 5 through a pipe 2;

[0032] The right side of the discharge pipe 2 is fixedly connected with a mounting cylinder 7, the right end of the mounting cylinder 7 is in contact with a cylinder cover 8, and the left end of the cylinder cover 8 is fixedly installed with a motor 9. The inside of the discharge pipe 2 is rotatably connected with a rotating shaft 10, and the rotating shaft 10 is in contact with the output shaft of the motor 9. The outer side of the rotating shaft 10 is fixedly sleeved with a rotating disk 11, and the rotating disk 11 is rotatably connected to the discharge pipe 2. The right end of the rotating shaft 10 is fixedly connected with a block 12, and the block 12 is slidably connected to the output shaft of the motor 9. Through the setting of the block 12, the output shaft of the motor 9 can be plugged in and used.

[0033] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , the left end of the cylinder cover 8 and the upper side of the motor 9 are fixedly connected with a connecting plate 14, the connecting plate 14 is slidably connected to the mounting cylinder 7, the interior of the mounting cylinder 7 is fixedly connected with a fixed cylinder 15, the upper end of the fixed cylinder 15 contacts an end plate 16, the lower end of the end plate 16 is fixedly connected with an insert 17, the insert 17 is slidably connected to the mounting cylinder 7, the insert 17 is slidably connected to the connecting plate 14, the inner wall of the fixed cylinder 15 is fixedly connected with a fixed disk 18, the fixed disk 18 is slidably connected to the insert 17, and a spring 2 19 is provided on the outside of the insert 17, one end of the spring 2 19 is welded to the end plate 16, and the other end of the spring 2 19 is welded to the insert The mounting plate 17 is welded, and the plug block 17 can be tightened by the setting of the spring 2 19. By pulling the end plate 16 upward, the plug block 17 can be moved to drive the mounting plate to move. The spring 2 19 is deformed, and the plug block 17 is eventually separated from the connecting plate 14. The cylinder cover 8 can be pulled to the right to drive the connecting plate 14 to move, and finally the connecting plate 14 is separated from the mounting cylinder 7. When the cylinder cover 8 moves, the motor 9 can be driven to move, and finally the output shaft of the motor 9 drives the block 12 to separate from the rotating shaft 10, and then the motor 9 is quickly dismantled, which is convenient for maintenance and use by the operator.

[0034] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 5, a positioning mechanism 13 is provided on the rotating shaft 10 and the mounting cylinder 7. The positioning mechanism 13 includes a positioning hole 131. The inner wall of the mounting cylinder 7 is provided with a positioning hole 131. A plurality of positioning holes 131 are provided. The plurality of positioning holes 131 are arranged in a circular array on the mounting cylinder 7. The setting of the positioning holes 131 facilitates the use of a positioning ball 134 for card connection. A connecting disk 132 is fixedly sleeved on the outer side of the rotating shaft 10. The connecting disk 132 is rotatably connected to the mounting cylinder 7. A spring 133 is welded inside the connecting disk 132. A positioning ball 134 is welded on the upper end of the spring 133. The positioning ball 134 is slidably connected to the positioning hole 131. The output shaft is driven by the motor 9 to rotate, so as to drive the block 12 to rotate, thereby driving The rotating shaft 10 rotates, and finally drives the rotating disk 11 to rotate, adjusts the angle of the rotating disk 11, and then regulates the feeding amount of the mineral. In this process, when the rotating shaft 10 rotates, it can drive the connecting disk 132 to rotate. Under the pressure of the inner wall of the positioning hole 131, it can push the positioning ball 134, and then push the spring 133 to deform, and finally make the positioning ball 134 disengage from the positioning hole 131. Under the action of force, the positioning ball 134 slides along the inner wall of the mounting tube 7. When the positioning ball 134 slides into the next positioning hole 131, the spring 133 restores its deformation to push the positioning ball 134 into the positioning hole 131, limit the connecting disk 132, and then finely control the position of the rotating disk 11.

[0035] See also Figure 1 、 Figure 6 、 Figure 7 , four vertical cylindrical electrodes 20 are fixedly connected to the bottom of the organic glass shell set inside the high-voltage electric field sorting chamber 4, the height of the four vertical cylindrical electrodes 20 is lower than the height of the high-voltage electric field sorting chamber 4, and the height of the four vertical cylindrical electrodes 20 is consistent with the height of the organic glass shell set inside the high-voltage electric field sorting chamber 4. Two vertical cylindrical electrodes 20 are installed in parallel on the left and right sides of the organic glass shell set inside the high-voltage electric field sorting chamber 4 to form a material sorting channel. The gap between the two pairs of vertical cylindrical electrodes 20 installed in parallel on the left and right is adjustable, and the width of the material sorting channel can be adjusted. The vertical cylindrical electrodes 20 are electrically connected to the high-voltage power supply, and the high-voltage power supply is fixedly connected to the fixed bracket set on the high-voltage electric field sorting chamber 4, so that the vertical cylindrical electrodes 20 are energized to form a high-voltage electrostatic field. The vertical cylindrical electrodes 20 are detachable and can be replaced when worn after long-term use.

[0036] The specific implementation process of the utility model is as follows: when in use, the material is fed through the vibrating feeder 1, and under the action of the discharge pipe 2, it enters the rotating friction particle charging chamber 3 together with the incoming air flow and contacts the rotating friction electrostatic generator. Under the rotation of the friction electrostatic generator, the particles and the particles and the friction material collide with each other and are frictionally charged, and are charged under the strengthening action of the external electric field. Due to the differences in the properties of the particles themselves, such as the electronic binding force, the positive and negative charges and the amount of charge on the materials to be sorted are different. After friction charging, the materials enter the high-voltage electric field sorting chamber 4. Under the action of the electric field formed by two pairs of vertical cylindrical electrodes 20 connected to the high-voltage power supply, materials with different electrical properties deviate in the sorting area and are separated according to different motion trajectories. Then they enter the product collection device 5;

[0037] In this process, the setting of the feeding pipe 2 can be used for feeding ore, and the output shaft is driven by the motor 9 to rotate, so as to drive the block 12 to rotate, and then drive the rotating shaft 10 to rotate, and finally drive the rotating disk 11 to rotate, and adjust the angle of the rotating disk 11, so as to regulate the feeding amount of the mineral. In this process, when the rotating shaft 10 rotates, it can drive the connecting disk 132 to rotate, and under the pressure of the inner wall of the positioning hole 131, it can push the positioning ball 134, and then push the spring 133 to deform, and finally make the positioning ball 134 disengage from the positioning hole 131. Under the action of force, the positioning ball 134 slides along the inner wall of the mounting tube 7. When the positioning ball 134 slides into the next positioning hole 131, the spring 133 restores its deformation to push the positioning ball 134 to insert into the positioning hole 131, limit the connecting disk 132, and thus finely control the position of the rotating disk 11.

[0038] By pulling the end plate 16 upward, the insert block 17 can be moved, thereby driving the mounting plate to move. The spring 2 19 is deformed, and the insert block 17 is eventually separated from the connecting plate 14. The cylinder cover 8 can be pulled to the right to drive the connecting plate 14 to move, and finally the connecting plate 14 is separated from the mounting cylinder 7. When the cylinder cover 8 moves, the motor 9 can be driven to move, and finally the output shaft of the motor 9 drives the block 12 to separate from the rotating shaft 10, and then the motor 9 is quickly dismantled, which is convenient for maintenance and use by the operator.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary friction electrostatic separator, comprising a vibrating feeder (1), characterized in that: The lower end of the vibrating feeder (1) is provided with a feed pipe (2), the lower end of the feed pipe (2) is provided with a rotating friction particle charging chamber (3), the lower end of the rotating friction particle charging chamber (3) is provided with a high-voltage electric field sorting chamber (4), the interior of the high-voltage electric field sorting chamber (4) is provided with four vertical cylindrical electrodes (20), the gaps between the four vertical cylindrical electrodes (20) form a sorting channel, the inner top of the high-voltage electric field sorting chamber (4) is provided with an airflow straightening device, the lower end of the high-voltage electric field sorting chamber (4) is connected to a product collecting device (5) through a pipe 1, a vacuum source (6) is provided on the right side of the high-voltage electric field sorting chamber (4), and the vacuum source (6) is connected to the product collecting device (5) through a pipe 2; The right side of the discharge tube (2) is fixedly connected to a mounting cylinder (7), the right end of the mounting cylinder (7) contacts a cylinder cover (8), the left end of the cylinder cover (8) is fixedly installed with a motor (9), the interior of the discharge tube (2) is rotatably connected to a rotating shaft (10), the rotating shaft (10) contacts the output shaft of the motor (9), the outer side of the rotating shaft (10) is fixedly sleeved with a rotating disk (11), the rotating disk (11) is rotatably connected to the discharge tube (2), and a positioning mechanism (13) is provided on the rotating shaft (10) and the mounting cylinder (7).

2. The rotary friction electrostatic separator according to claim 1, characterized in that: The left end of the cylinder cover (8) is fixedly connected to a connecting plate (14) located on the upper side of the motor (9), the connecting plate (14) is slidably connected to the mounting cylinder (7), the interior of the mounting cylinder (7) is fixedly connected to a fixing cylinder (15), the upper end of the fixing cylinder (15) contacts an end plate (16), the lower end of the end plate (16) is fixedly connected to an insert block (17), the insert block (17) is slidably connected to the mounting cylinder (7), the insert block (17) is slidably connected to the connecting plate (14), the inner wall of the fixing cylinder (15) is fixedly connected to a fixing disk (18), the fixing disk (18) is slidably connected to the insert block (17), and a spring 2 (19) is provided on the outer side of the insert block (17).

3. The rotary friction electrostatic separator according to claim 2, characterized in that: One end of the second spring (19) is welded to the end plate (16), and the other end of the second spring (19) is welded to the mounting plate of the insert (17).

4. The rotary friction electrostatic separator according to claim 1, characterized in that: The right end of the rotating shaft (10) is fixedly connected with a block (12), and the block (12) is slidably connected to the output shaft of the motor (9).

5. The rotary friction electrostatic separator according to claim 1, characterized in that: The positioning mechanism (13) includes a positioning hole (131). The inner wall of the mounting tube (7) is provided with the positioning hole (131). The outer side of the rotating shaft (10) is fixedly sleeved with a connecting disk (132). The connecting disk (132) is rotatably connected to the mounting tube (7). A spring (133) is welded inside the connecting disk (132). A positioning ball (134) is welded to the upper end of the spring (133). The positioning ball (134) is slidably connected to the positioning hole (131).

6. The rotary friction electrostatic separator according to claim 1, characterized in that: The four vertical cylindrical electrodes (20) are fixedly connected to the bottom of the organic glass shell provided inside the high-voltage electric field sorting chamber (4); the heights of the four vertical cylindrical electrodes (20) are lower than the height of the high-voltage electric field sorting chamber (4); the heights of the four vertical cylindrical electrodes (20) are consistent with the height of the organic glass shell provided inside the high-voltage electric field sorting chamber (4); and two vertical cylindrical electrodes (20) are installed in parallel on the left and right sides of the organic glass shell provided inside the high-voltage electric field sorting chamber (4).

7. The rotary friction electrostatic separator according to claim 6, characterized in that: The gap between the two pairs of vertical cylindrical electrodes (20) installed in parallel on the left and right sides is adjustable.

8. The rotary friction electrostatic separator according to claim 1, characterized in that: The vertical cylindrical electrode (20) is electrically connected to a high-voltage power supply, and the high-voltage power supply is fixedly connected to a fixed bracket provided on the high-voltage electric field separation chamber (4).

9. The rotary friction electrostatic separator according to claim 1, characterized in that: The vertical cylindrical electrode (20) is detachable.

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