Free falling body type magnetic separator

Abstract

The invention relates to the technical field of magnetic separators, and discloses a free falling body type magnetic separator which comprises a recovery body, a magnetic separation body is arranged on the upper side of the recovery body, a separation cavity is formed in the magnetic separation body, an outer rotating barrel is rotationally arranged on the wall body of the separation cavity, at least two sets of outer ring magnets are arranged on the outer side of the outer rotating barrel, and a gap is formed between every two adjacent outer ring magnets. By arranging the magnetic separation body, the separation cavity, an outer ring magnet, an outer rotating barrel, an outer impurity channel, an outer impurity baffle, an umbrella-shaped body and the like, materials are evenly dispersed into the separation cavity after being treated by the umbrella-shaped body, in the falling process of the materials, the outer ring magnet adsorbs ferromagnetic impurities, and the magnetic separation effect is improved. And in cooperation with rotation of the outer rotating barrel, ferromagnetic impurities are separated to the outer side.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic separators, in particular to a free-fall type magnetic separator. Background Art

[0002] The magnetic separator is one of the most widely used and versatile machines in the industry. It is suitable for separating materials with magnetic differences. It is widely used in mining, wood, kiln, chemical, food and other industries. As for the mining industry, the existing magnetic separators include belt conveyor mechanisms, magnetic separation mechanisms, etc. Since the thickness of the material transported by the belt conveyor structure is difficult to control, the upper material squeezes the ferromagnetic material, which hinders the magnetic separation mechanism from magnetically absorbing impurities. Therefore, in order to solve the problem that the material particles themselves hinder the separation of ferromagnetic impurities, the present invention proposes a free-fall magnetic separator. Summary of the invention

[0003] The object of the present invention is to provide a free-fall magnetic separator to overcome the above-mentioned defects in the prior art.

[0004] The present invention is achieved through the following technical solutions.

[0005] A free-fall magnetic separator according to the present invention comprises a recovery body, a magnetic separation body is arranged on the upper side of the recovery body, the magnetic separation body is provided with a separation chamber, the wall body of the separation chamber is rotatably provided with an outer rotating barrel, at least two groups of outer ring magnets are arranged on the outer side of the outer rotating barrel, and gaps are formed between adjacent outer ring magnets, the lower side wall body of the separation chamber is connected with the outside and is provided with a through groove, the lower side wall body of the separation chamber is connected with an external impurity channel, the external impurity channel is located near the gap between adjacent outer ring magnets, the lower side wall body of the separation chamber is provided with an external impurity baffle, the external impurity baffle is close to the external impurity channel, a gap is formed between the external impurity baffle and the outer rotating barrel, an opening is arranged on the upper side of the separation chamber, a collecting opening is arranged at the opening on the upper side of the separation chamber, a power shell is arranged at the center of the collecting opening, an umbrella-shaped body is rotatably provided on the lower side of the power shell, the pointed end of the umbrella-shaped body faces upward, an impurity recovery pipe is connected to the lower side of the external impurity channel, a recovery chamber is arranged in the middle of the recovery body, and the lower side of the through groove is connected to the recovery chamber.

[0006] A further technical solution is that an inner rotating barrel is rotatably provided at the center of the separation chamber, at least two groups of inner ring magnets are provided in the chamber of the inner rotating barrel, gaps are provided between adjacent inner ring magnets, an inner impurity channel is provided on the lower wall of the separation chamber which is connected to the outside, an inner impurity baffle is provided on the outer side of the inner impurity channel, a gap is formed between the inner impurity baffle and the inner rotating barrel, the inner impurity channel is distributed on the outer side of the gap between adjacent inner ring magnets, and an impurity recovery pipe is provided on the lower side of the inner impurity channel.

[0007] A further technical solution is that a fixed body is rotatably provided on the lower side of the power shell, an umbrella rib is rotatably provided on the outer side of the fixed body, the umbrella ribs are circumferentially distributed around the axis of the fixed body, an umbrella surface is provided on the outer side of the umbrella ribs, a slide groove is provided in the middle of the fixed body, a sliding rod is provided in the slide groove for sliding up and down, a support rod is rotatably provided on the lower end of the sliding rod, the support rod is circumferentially distributed around the axis of the sliding rod, and one end of the support rod is rotatably connected to the inner side of the umbrella ribs.

[0008] According to a further technical solution, the umbrella surface is divided between adjacent ribs to form dispersed seams, and an interception groove is provided on the upper surface of the umbrella surface. The interception groove is arc-shaped, and the circular shape of the interception groove is located at the axis of the fixed body. The interception grooves are distributed in an array radially outward along the fixed body.

[0009] A further technical solution is that a movable slide groove is provided in the power shell, a transmission ring is rotatably provided in the movable slide groove, a straight tooth groove is provided in the center of the transmission ring, a connecting straight tooth rod is provided in the straight tooth groove of the transmission ring, the lower side of the connecting straight tooth rod is connected to the upper end of the sliding rod, a telescopic rod is provided on the upper side of the power shell, and the axis of the telescopic rod is connected to the upper end of the connecting straight tooth rod.

[0010] A further technical solution is that a transmission cavity is provided in the power shell, the transmission cavity of the power shell is communicated with the movable slide groove, a motor is provided in the power shell, a driving gear is provided on the shaft of the motor, the driving gear is located in the transmission cavity, teeth are provided on the outer side of the transmission ring, and the driving gear is meshed with the teeth on the outer side of the transmission ring.

[0011] A further technical solution is that a connecting rod is provided between the inner side of the outer rotating barrel and the outer side of the inner rotating barrel, and a straight tooth groove is provided on the upper side wall of the inner cavity of the inner rotating barrel that is connected to the outside world, and a straight tooth rod is provided in the straight tooth groove in connection with the straight teeth, and the straight tooth rod is connected to the lower end of the sliding rod.

[0012] Beneficial effects of the present invention:

[0013] A free-fall magnetic separator of the present invention is provided with a magnetic separator, a separation chamber, an outer ring magnet, an outer rotating barrel, an outer impurity channel, an outer impurity baffle umbrella body, etc. The material is processed by the umbrella body and evenly dispersed into the separation chamber. In the process of material falling, the outer ring magnet adsorbs ferromagnetic impurities, and cooperates with the rotation of the outer rotating barrel to separate the ferromagnetic impurities to the outside. The separation process is that the material loses the vertical squeezing force on the ferromagnetism during the free fall of the material, which greatly reduces the resistance to the separation of ferromagnetic materials and improves the separation efficiency and effect.

[0014] The present invention arranges umbrella ribs, umbrella surface, interception grooves, dispersion slits, etc. When materials fall onto the upper surface of the umbrella surface, the materials first fill the interception grooves, and the remaining materials are thrown outward with the rotation of the umbrella surface. When the rotation speed of the umbrella surface changes, due to the effect of inertia, the materials in the interception grooves fall into the separation chamber through the dispersion slits. This design can adapt to the situation of large feed volume, make the falling distribution of materials more uniform, and avoid local excessive concentration of materials to hinder the magnetic separation process.

[0015] The present invention sets an inner rotating barrel, an inner ring magnet, an inner impurity channel, an inner impurity baffle, etc. in the center of the separation chamber, applies a magnetic separation structure at the center of the separation chamber to form an annular separation chamber, and the inner ring magnet cooperates with the outer ring magnet to greatly enhance the magnetic field required for separation, thereby enhancing the powder separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure enlarged at AA in the middle;

[0020] Figure 3 yes Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0022] Figure 5 yes Figure 3 A top view of location 14;

[0023] Figure 6 yes Figure 5 Side cross-sectional view at point 15. DETAILED DESCRIPTION

[0024] Combine the following Figure 1-6 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are the same as Figure 1The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0025] Combined with Figure 1-6 The free-fall magnetic separator comprises a recovery body 10, a magnetic separation body 11 is arranged on the upper side of the recovery body 10, and a separation chamber 18 is arranged on the magnetic separation body 11. The wall of the separation chamber 18 is rotatably provided with an outer rotating barrel 17, and at least two groups of outer ring magnets 16 are arranged outside the outer rotating barrel 17, and gaps are formed between adjacent outer ring magnets 16. The lower side wall of the separation chamber 18 is connected to the outside and is provided with a through groove 19. The lower side wall of the separation chamber 18 is connected with an external impurity channel 22, and the external impurity channel 22 is located near the gap between adjacent outer ring magnets 16. An external impurity baffle 23 is provided on the lower wall of 18, and the external impurity baffle 23 is close to the external impurity channel 22. A gap is formed between the external impurity baffle 23 and the outer rotating barrel 17. An opening is provided on the upper side of the separation chamber 18, and a collecting opening 12 is provided at the opening on the upper side of the separation chamber 18. A power shell 13 is provided at the center of the collecting opening 12. An umbrella-shaped body is rotatably provided on the lower side of the power shell 13, and the pointed end of the umbrella-shaped body faces upward. An impurity recovery pipe 20 is connected to the lower side of the external impurity channel 22, and a recovery chamber 21 is provided in the middle of the recovery body 10, which is connected to the recovery chamber 21 through the lower side of the groove 19.

[0026] When using the device, the mineral particles to be processed are placed on the upper opening of the collection opening 12, the umbrella-shaped body disperses the mineral particles, and the mineral particles flow downward into the separation chamber 18, and the outer ring magnet 16 adsorbs the ferromagnetic impurities in the mineral to the inner wall surface of the outer rotating barrel 17. The outer rotating barrel 17 rotates, and the outer rotating barrel 17 drives the ferromagnetic impurities to rotate to the gap between the adjacent outer ring magnets 16. The outer rotating barrel 17 loses its magnetism on the outside at this position. Under the action of gravity, the ferromagnetic material enters the outer impurity channel 22 and the impurity recovery pipe 20, and other materials pass through the groove 19 and enter the recovery chamber 21. The outer impurity baffle 23 isolates the ferromagnetic material and the mineral particles to complete the function of magnetic mineral separation. The separation process is that the material loses the most squeezing force on the ferromagnetic material during the falling process of the material, which greatly reduces the resistance to the separation of the ferromagnetic material and improves the separation efficiency and effect.

[0027] Preferably, an inner rotating barrel 24 is provided in the center of the separation chamber 18, at least two groups of inner ring magnets 25 are provided in the cavity of the inner rotating barrel 24, gaps are provided between adjacent inner ring magnets 25, an inner impurity channel 27 is provided on the lower wall of the separation chamber 18 which is connected to the outside, an inner impurity baffle 26 is provided on the outer side of the inner impurity channel 27, a gap is formed between the inner impurity baffle 26 and the inner rotating barrel 24, the inner impurity channel 27 is distributed on the outer side of the gap between adjacent inner ring magnets 25, and an impurity recovery pipe 20 is provided on the lower side of the inner impurity channel 27.

[0028] During the falling process of the material, in order to increase the range of magnetic force and improve the ferromagnetic separation effect, the inner ring magnet 25 in the center attracts the ferromagnetic material to the surface of the inner rotating barrel 24, and the rotating inner rotating barrel 24 brings the ferromagnetic material to the top of the inner impurity channel 27. Since there is no inner ring magnet 25 near the inner impurity channel 27, the magnetic force disappears. Under the action of gravity, the ferromagnetic material passes through the inner impurity channel 27 and the impurity recovery pipe 20 and is separated. The inner impurity baffle 26 plays the role of isolating impurities.

[0029] Preferably, a fixed body 30 is rotatably provided on the lower side of the power shell 13, an umbrella rib 14 is rotatably provided on the outer side of the fixed body 30, the umbrella rib 14 is circumferentially distributed around the axis of the fixed body 30, an umbrella cover 15 is provided on the outer side of the umbrella rib 14, a slide groove 31 is provided in the middle of the fixed body 30, a sliding rod 29 is provided on the slide groove 31 for sliding up and down, a support rod 28 is rotatably provided on the lower end of the sliding rod 29, the support rod 28 is circumferentially distributed around the axis of the sliding rod 29, and one end of the support rod 28 is rotatably connected to the inner side of the umbrella rib 14.

[0030] The material impacts the upper surface of the ribs 14 and the umbrella cover 15 from top to bottom, and the fixed body 30 causes the ribs 14 and the umbrella cover 15 to rotate, thereby rotating and dispersing the material. The sliding rod 29 slides up and down, and the sliding rod 29 causes the ribs 14 to rotate through the support rod 28, thereby adjusting the expansion angle of the ribs 14 and changing the diameter of the material diffusion ring. When the material flow rate is large, the diameter of the diffusion ring is increased, so that the material is dispersed thinner, which is beneficial to reducing the resistance to ferromagnetic movement.

[0031] Preferably, the umbrella cover 15 is divided between adjacent ribs 14 to form dispersed seams 42, and a retaining groove 41 is provided on the upper surface of the umbrella cover 15. The retaining groove 41 is arc-shaped, and the circular shape of the retaining groove 41 is located at the axis of the fixed body 30. The retaining grooves 41 are distributed in an array radially outward along the fixed body 30.

[0032] When the material falls onto the upper surface of the umbrella 15, the material first fills the retention groove 41, and the remaining material is thrown outward as the umbrella 15 rotates. When the umbrella 15 rotates in the opposite direction, due to the effect of inertia, the material in the retention groove 41 falls into the separation chamber 18 through the dispersion gap 42. This design can make the material fall more evenly distributed, avoiding local excessive concentration of the material and hindering the magnetic separation process.

[0033] Preferably, a movable slide groove 33 is provided in the power shell 13, a transmission ring 36 is rotatably provided in the movable slide groove 33, a straight tooth groove is provided in the center of the transmission ring 36, a connecting straight tooth rod 37 is provided in the straight tooth groove of the transmission ring 36, the lower side of the connecting straight tooth rod 37 is connected to the upper end of the sliding rod 29, and a telescopic rod 32 is provided on the upper side of the power shell 13, and the axis of the telescopic rod 32 is connected to the upper end of the connecting straight tooth rod 37.

[0034] The telescopic rod 32 is connected to the spur gear rod 37 to move up and down, and the spur gear rod 37 drives the sliding rod 29 to move up and down.

[0035] Preferably, a transmission cavity is provided in the power shell 13, and the transmission cavity of the power shell 13 is connected to the movable slide groove 33. A motor 34 is provided in the power shell 13, and a driving gear 35 is provided on the shaft of the motor 34. The driving gear 35 is located in the transmission cavity, and teeth are provided on the outer side of the transmission ring 36. The driving gear 35 meshes with the teeth on the outer side of the transmission ring 36.

[0036] The motor 34 is started, and the motor 34 drives the transmission ring 36 to rotate through the driving gear 35, and the transmission ring 36 drives the connecting spur gear 37 to rotate, and the connecting spur gear 37 drives the sliding rod 29 to rotate, thereby driving the umbrella ribs 14 and the umbrella surface 15 to rotate.

[0037] Preferably, a connecting rod 38 is provided between the inner side of the outer rotating barrel 17 and the outer side of the inner rotating barrel 24, and a straight tooth groove 40 is provided on the upper side wall of the inner cavity of the inner rotating barrel 24, which is connected to the outside world. A straight tooth rod 39 is provided in the straight tooth groove 40, and the straight tooth rod 39 is connected to the lower end of the sliding rod 29.

[0038] The sliding rod 29 drives the spur rod 39 to rotate, the spur rod 39 drives the inner rotating barrel 24 to rotate through the spur tooth groove 40, and the inner rotating barrel 24 drives the outer rotating barrel 17 to rotate through the connecting rod 38.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A free-fall magnetic separator, comprising a recovery body, characterized in that: A magnetic separation body is provided on the upper side of the recovery body, and the magnetic separation body is provided with a separation chamber, and the wall body of the separation chamber is rotatably provided with an outer rotating barrel, at least two groups of outer ring magnets are outside the outer rotating barrel, and gaps are formed between adjacent outer ring magnets, and the lower side wall body of the separation chamber is connected with the outside and is provided with a through groove, and the lower side wall body of the separation chamber is connected with an external impurity channel, and the external impurity channel is located near the gap between adjacent outer ring magnets, and the lower side wall body of the separation chamber is provided with an external impurity baffle, and the external impurity baffle is close to the external impurity channel, and a gap is formed between the external impurity baffle and the outer rotating barrel, an opening is provided on the upper side of the separation chamber, and a collection opening is provided at the opening on the upper side of the separation chamber, and a power shell is provided at the center of the collection opening, and an umbrella-shaped body is rotatably provided on the lower side of the power shell, and the pointed end of the umbrella-shaped body faces upward, and an impurity recovery pipe is connected to the lower side of the external impurity channel, and a recovery chamber is provided in the middle of the recovery body, and the lower side of the through groove is connected to the recovery chamber.

2. A free-fall magnetic separator according to claim 1, characterized in that: An inner rotating barrel is rotatably provided at the center of the separation chamber, at least two groups of inner ring magnets are provided in the chamber of the inner rotating barrel, gaps are provided between adjacent inner ring magnets, an inner impurity channel is provided on the lower wall of the separation chamber which is connected to the outside, an inner impurity baffle is provided on the outer side of the inner impurity channel, a gap is formed between the inner impurity baffle and the inner rotating barrel, the inner impurity channel is distributed on the outer side of the gap between adjacent inner ring magnets, and an impurity recovery pipe is provided on the lower side of the inner impurity channel.

3. A free-fall magnetic separator according to claim 1, characterized in that: A fixed body is rotatably provided at the lower side of the power shell, an umbrella rib is rotatably provided at the outer side of the fixed body, the umbrella ribs are distributed circumferentially around the axis of the fixed body, an umbrella surface is provided at the outer side of the umbrella ribs, a sliding groove is provided in the middle of the fixed body, a sliding rod is provided in the sliding groove for sliding up and down, a support rod is rotatably provided at the lower end of the sliding rod, the support rod is distributed circumferentially around the axis of the sliding rod, and one end of the support rod is rotatably connected to the inner side of the umbrella ribs.

4. A free-fall magnetic separator according to claim 3, characterized in that: The umbrella surface is divided between adjacent ribs to form dispersed seams, and an interception groove is provided on the upper surface of the umbrella surface. The interception groove is arc-shaped, and the circular shape of the interception groove is located at the axis of the fixed body. The interception grooves are distributed in an array radially outward along the fixed body.

5. A free-fall magnetic separator according to claim 3, characterized in that: A movable slide groove is provided in the power shell, a transmission ring is rotatably provided in the movable slide groove, a straight tooth groove is provided in the center of the transmission ring, a connecting straight tooth rod is provided in the straight tooth groove of the transmission ring, the lower side of the connecting straight tooth rod is connected to the upper end of the sliding rod, a telescopic rod is provided on the upper side of the power shell, and the shaft of the telescopic rod is connected to the upper end of the connecting straight tooth rod.

6. A free-fall magnetic separator according to claim 5, characterized in that: A transmission cavity is provided in the power shell, and the transmission cavity of the power shell is communicated with the movable slide groove. A motor is provided in the power shell, and a driving gear is provided on the shaft of the motor. The driving gear is located in the transmission cavity, and teeth are provided on the outer side of the transmission ring, and the driving gear is meshed with the teeth on the outer side of the transmission ring.

7. A free-fall magnetic separator according to claim 3, characterized in that: A connecting rod is provided between the inner side of the outer rotating barrel and the outer side of the inner rotating barrel. A straight tooth groove is provided on the upper side wall of the inner cavity of the inner rotating barrel, which is connected to the outside world. A straight tooth rod is connected with the straight teeth in the straight tooth groove. The straight tooth rod is connected to the lower end of the sliding rod.

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