A dry magnetic separator capable of self-adjusting separation state

Abstract

The present invention discloses a dry magnetic separator with self-adjustable sorting state, comprising a magnetic separator body, the magnetic separator body comprising an upper cover and a sorting tank; a feed hopper is provided at the top of the upper cover, and a material guide cylinder is vertically inserted in the center of the upper cover; a discharge port 1 and a discharge port 2 are respectively provided at the bottom end of the sorting tank, a partition frame is provided inside the sorting tank, a magnetic field frame is rotatably provided in the center of the partition frame, and a discharge end is provided at the bottom of the magnetic field frame, and a spiral material guide ridge is provided on the inner wall of the magnetic field frame. This dry magnetic separator with self-adjustable sorting state is provided with a magnetic field frame inside the sorting tank, and a blowing mechanism is provided at the discharge end of the magnetic field frame, so that after the material falls into the magnetic field frame, the material can be blown up by the operation of the blowing mechanism, so that the magnetic particles in the material are affected by the magnetic force of the magnetic field frame and adsorbed on the inner wall of the magnetic field frame, and the non-magnetic material is affected by the wind and enters the inner cavity of the sorting tank outside the partition frame, so as to achieve the separation of magnetic and non-magnetic materials in the material.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic separators, and in particular relates to a dry magnetic separator capable of self-adjusting a separation state. Background Art

[0002] Magnetic separator is a screening device used to extract magnetic substances from the medium. The device can use the magnetic difference of the separated materials to separate minerals. Magnetic separators include dry magnetic separators and wet magnetic separators. Dry magnetic separators are widely used due to their small footprint, simple process flow, water conservation, and no mineral processing wastewater discharge.

[0003] Most of the existing mineral dry magnetic separators have a relatively fixed structure and cannot adjust the sorting state according to the sorting requirements of coarse-grained materials (particle size greater than 6mm) and fine-grained materials (particle size less than 6mm), so there are certain limitations in use; and with the development of dry magnetic separators, accelerating material separation by flowing gas has become a sorting method, but when this sorting method is used for magnetic separation, due to the electrostatic attraction between material particles, the magnetic and non-magnetic materials in the material will be insufficient due to insufficient magnetic force of the equipment or insufficient dispersion force of the flowing gas, resulting in the phenomenon that the magnetic material cannot be fully separated from the non-magnetic material. The magnetic separator has the defects of slow magnetic separation speed and poor sorting accuracy, so there is an urgent need for a dry magnetic separator with self-adjustable sorting state to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a dry magnetic separator with self-adjustable sorting state to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A dry magnetic separator with self-adjustable sorting state comprises a magnetic separator body; the magnetic separator body comprises a detachably connected upper cover and a sorting tank; a feed hopper is arranged at the top of the upper cover, and a discharge port 1 and a discharge port 2 are arranged at the bottom of the sorting tank respectively; a hollow material guide cylinder is vertically inserted through the center of the upper cover, and through grooves are arranged on the side walls of the upper and lower ends of the material guide cylinder, and the top of the material guide cylinder extends to the inner cavity of the feed hopper; a partition frame is arranged inside the sorting tank, and the discharge port 2 is fixed at the bottom of the partition frame; a magnetic field frame is rotatably arranged at the center of the partition frame, and the magnetic field frame is a bucket-shaped structure with a larger upper part and a smaller lower part, and a discharge port is arranged at the bottom of the magnetic field frame. The discharge end extends through the bottom of the partition frame to the second discharge port, and the inner wall of the magnetic focusing frame is provided with a spiral material guiding ridge; a lifting and lowering adjustable blowing mechanism and a transmission mechanism connected to the blowing mechanism are provided in the second discharge port below the discharge end; the upper end of the blowing mechanism extends to the discharge end; the bottom end of the material guiding cylinder extends to just above the blowing mechanism in the inner cavity of the magnetic focusing frame; a driving mechanism for driving the magnetic focusing frame to rotate is provided inside the partition frame, and the bottom end of the driving mechanism is connected to the transmission mechanism, so that when the driving mechanism drives the magnetic focusing frame to rotate, the blowing mechanism can be driven to operate through the transmission mechanism, thereby generating upward wind force at the bottom end of the material guiding cylinder.

[0007] Furthermore, the partition frame is fixed in the inner cavity of the sorting tank by a fixing rod, and a gap is left between the outer side of the partition frame and the inner wall of the sorting tank.

[0008] Furthermore, a support rod for supporting the magnetic focusing frame is provided inside the partition frame, and a support ring matching the support rod is provided outside the magnetic focusing frame at the support rod, so that the magnetic focusing frame can rotate inside the partition frame under the action of the support rod and the support ring.

[0009] Furthermore, the cross-section of the material guiding ridge is an obtuse triangle structure that is smaller at the top and larger at the bottom.

[0010] Furthermore, the driving mechanism includes a motor, a driving wheel one and a driving wheel two; the motor is a dual-axis motor, and the driving wheel one and the driving wheel two are respectively connected to the two driving shafts of the motor; a gear ring meshing with the driving wheel one is provided on the outside of the magnetic focusing frame, so that when the motor drives the driving wheel one to rotate, the gear ring can be linked to drive the magnetic focusing frame to rotate; the driving wheel two is connected to the transmission mechanism.

[0011] Furthermore, the transmission mechanism includes a connecting gear, a rotating shaft and a driving gear; the rotating shaft transversely penetrates the inner cavity of the second discharge port, and one end of the rotating shaft passes through the outer wall of the second discharge port and extends to one end of the second driving wheel; the connecting gear is fixed to the end of the rotating shaft outside the second discharge port, so that the connecting gear and the second driving wheel are meshed with each other; the driving gear is fixed on the rotating shaft of the inner cavity of the second discharge port, and is used to connect the blowing mechanism.

[0012] Furthermore, the blowing mechanism includes an impeller, a main telescopic part and a mounting frame; the mounting frame is fixed in the second discharge port on the outside of the rotating shaft; the main telescopic part is rotatably arranged in the center of the mounting frame, and the telescopic end of the main telescopic part passes through the discharge end and extends into the inner cavity of the magnetic focusing frame; the impeller is fixed at the top of the telescopic end of the main telescopic part; the bottom end of the main telescopic part is provided with a rotating gear, and the rotating gear and the driving gear are engaged with each other; a baffle for blocking the inner cavity channel of the discharge end is movably arranged on the outer wall of the upper end of the mounting frame, and a secondary telescopic part is movably arranged on the mounting frame below the baffle, and the secondary telescopic part is movably connected to the baffle, so that when the secondary telescopic part is extended and retracted, the baffle can be driven to flip to open or close the inner cavity channel of the discharge end.

[0013] After adopting the above scheme, the beneficial effects of the present invention compared with the prior art are:

[0014] (1) The present invention provides a magnetic field frame inside the separation tank and a blowing mechanism at the discharge end of the magnetic field frame, so that after the material falls into the magnetic field frame, the material can be blown upward by the operation of the blowing mechanism, so that the magnetic particles in the material are affected by the magnetic force of the magnetic field frame and adsorbed on the inner wall of the magnetic field frame, and the non-magnetic material can be affected by the wind and enter the inner cavity of the separation tank outside the separation frame, thereby realizing the separation of magnetic and non-magnetic materials in the material;

[0015] (2) The present invention can increase the impact between materials during the process of materials rotating from bottom to top inside the magnetic focusing frame by means of the spiral material guide ridges on the inner wall of the magnetic focusing frame, so that the magnetic material and the non-magnetic material in the material are fully separated. The material guide ridges of special shape can accelerate the non-magnetic material to move along the inner wall of the magnetic focusing frame toward the top of the magnetic focusing frame, thereby improving the separation speed and accuracy of material magnetic separation;

[0016] (3) The present invention adopts a lifting and adjusting blowing mechanism, so that the main telescopic part of the blowing mechanism can drive the impeller to rise and fall, change the distance between the impeller and the bottom of the material guide barrel, and then change the wind force of the blowing mechanism, so that the device can adjust the sorting state according to the particle size of the material to be magnetically separated, ensuring that materials of different particle sizes can be blown up by the blowing mechanism for magnetic separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the magnetic separator of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the present invention after removing the upper cover;

[0019] Figure 3 The present invention Figure 1 Enlarged structural diagram at A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] Feed hopper 1, upper cover 2, sorting tank 3, discharge port 1 31, discharge port 2 32, partition frame 4, fixing rod 41, shielding cover 42, driving mechanism 5, driving wheel 1 51, driving wheel 2 52, material guide cylinder 6, through groove 61, magnetic focusing frame 7, supporting ring 71, material guide ridge 72, gear ring 73, discharge end 74, blowing mechanism 8, impeller 81, main telescopic part 82, baffle 83, auxiliary telescopic part 84, rotating gear 85, mounting frame 86, transmission mechanism 9, connecting gear 91, rotating shaft 92, and driving gear 93. DETAILED DESCRIPTION

[0022] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-3As shown, a dry magnetic separator with self-adjustable sorting state comprises a magnetic separator body; the magnetic separator body comprises a detachably connected upper cover 2 and a sorting tank 3; a feed hopper 1 is provided at the top of the upper cover 2, and a discharge port 1 31 and a discharge port 2 32 are provided at the bottom of the sorting tank 3 respectively; a hollow material guide cylinder 6 is vertically inserted through the center of the upper cover 2, and through grooves 61 are provided on the side walls of the upper and lower ends of the material guide cylinder 6, and the top of the material guide cylinder 6 extends to the inner cavity of the feed hopper 1; a partition frame 4 is provided inside the sorting tank 3, and the discharge port 2 32 is fixed at the bottom of the partition frame 4; a magnetic field frame 7 is rotatably provided at the center of the partition frame 4, and the magnetic field frame 7 is a bucket-shaped structure with a larger upper portion and a smaller lower portion, and a discharge port 32 is provided at the bottom of the magnetic field frame 7. The end 74 is provided with a discharge end 74 through the bottom of the partition frame 4 and extends to the discharge port 2 32. The inner wall of the magnetic focusing frame 7 is provided with a spiral material guiding ridge 72. A lifting and lowering adjustable blowing mechanism 8 and a transmission mechanism 9 connected to the blowing mechanism 8 are provided in the discharge port 2 32 below the discharge end 74. The upper end of the blowing mechanism 8 extends to the discharge end 74. The bottom end of the guide barrel 6 extends to the upper part of the blowing mechanism 8 in the inner cavity of the magnetic focusing frame 7. A driving mechanism 5 for driving the magnetic focusing frame 7 to rotate is provided inside the partition frame 4, and the bottom end of the driving mechanism 5 is connected to the transmission mechanism 9, so that when the driving mechanism 5 drives the magnetic focusing frame 7 to rotate, the blowing mechanism 8 can be driven to operate through the transmission mechanism 9. The upper and lower ends of the guide barrel 6 generate upward wind force; wherein, the number of through grooves 61 at the upper and lower ends of the guide barrel 6 is not less than 2, preferably 4, and the top of the guide barrel 6 is conical, ensuring that the material injected into the feed hopper 1 will not accumulate at the guide barrel 6, and can enter the hollow cavity of the guide barrel 6 from the through groove 61 at the top of the guide barrel 6, and then move along the hollow cavity of the guide barrel 6 to the through groove 61 at the bottom of the guide barrel 6 and fall into the inner cavity of the magnetic frame 7, ensuring that the material can accurately enter the magnetic frame 7 for magnetic separation; in this embodiment, a conductive ring (not shown in the figure) is provided on the outside of the magnetic frame 7, so that the magnetic frame 7 can generate magnetic force after power is turned on, so that after the material falls into the magnetic frame 7, the material can be blown upward by the operation of the blowing mechanism 8, so that The magnetic particles in the material will be attracted to the inner wall of the magnetic frame 7 by the magnetic force of the magnetic frame 7, so that the non-magnetic material can be affected by the wind and enter the inner cavity of the separation tank 3 outside the partition frame 4, so as to separate the magnetic material from the non-magnetic material in the material; and when the driving mechanism 5 drives the transmission mechanism 9 to operate in conjunction with the blowing mechanism 8, the magnetic frame 7 will be driven to rotate, and when the material moves from the bottom to the top inside the magnetic frame 7, the impact of the material in the magnetic frame 7 will be increased under the action of the material guide ridge 72, so that the magnetic material and the non-magnetic material in the material are fully separated, and the spirally arranged material guide ridge 72 can accelerate the non-magnetic material along the inner wall of the magnetic frame 7 to move toward the top of the magnetic frame 7, thereby improving the separation speed and accuracy of the magnetic separation of the material;After the magnetic focusing frame 7 is powered off, the magnetic material will fall into the second discharge port 32 along the discharge end 74, and the non-magnetic material will be introduced into the discharge port 1 31 through the inner cavity of the sorting tank 3, so as to realize the classified collection of the magnetic material and the non-magnetic material; the lifting and adjusting blowing mechanism 8 can change the distance between the blowing mechanism 8 and the bottom of the material guide cylinder 6, and then change the wind force of the blowing mechanism 8, so that the device can adjust the sorting state according to the particle size of the material to be magnetically separated, ensuring that materials of different particle sizes can be blown up by the blowing mechanism 8 for magnetic separation operation;

[0025] like Figure 1 , 2 As shown, in this embodiment, the partition frame 4 is fixed in the inner cavity of the sorting tank 3 by a fixing rod 41, and a gap is left between the outer side of the partition frame 4 and the inner wall of the sorting tank 3; wherein the number of the fixing rods 41 is not less than 4, preferably 6, to ensure that the partition frame 4 can be stably fixed in the inner cavity of the sorting tank 3, and will not affect the falling of the material in the gap between the partition frame 4 and the sorting tank 3, so as to ensure that the sorted non-magnetic materials can be collected in a centralized manner;

[0026] like Figure 1 As shown, in this embodiment, a support rod for supporting the magnetic field frame 7 is provided inside the partition frame 4, and a support ring 71 matching the support rod is provided on the outer side of the magnetic field frame 7 at the support rod, so that the magnetic field frame 7 can rotate inside the partition frame 4 under the action of the support rod and the support ring 71; wherein, a groove matching the support rod is provided in the center of the support ring 71, ensuring that the magnetic field frame 7 can be stably supported between the support rods by the support ring 71, and will not affect the rotation of the magnetic field frame 7 itself;

[0027] like Figure 1 As shown, in this embodiment, the cross section of the material guide ridge 72 is an obtuse triangle structure with a small top and a large bottom; wherein, the material guide ridge 72 of the special shape can not only ensure that when the material moves from the bottom to the top inside the magnetic focusing frame 7, it can have a certain barrier to increase the impact force between the materials, thereby achieving full separation of the magnetic material and the non-magnetic material in the material, but also ensure that the magnetic material adsorbed on the inner wall of the magnetic focusing frame 7 can slide down along the inclined surface of the material guide ridge 72 after the magnetic focusing frame 7 is powered off, thereby reducing the magnetic material remaining in the magnetic focusing frame 7, and the magnetic material can be fully separated and collected in a centralized manner;

[0028] like Figure 1 , 3As shown, in this embodiment, the driving mechanism 5 includes a motor, a driving wheel 1 51 and a driving wheel 2 52; the motor is a dual-axis motor, and the driving wheel 1 51 and the driving wheel 2 52 are respectively connected to the two driving shafts of the motor; the outer side of the magnetic focusing frame 7 is provided with a gear ring 73 that meshes with the driving wheel 1 51, so that when the motor drives the driving wheel 1 51 to rotate, the gear ring 73 can be linked to drive the magnetic focusing frame 7 to rotate; the driving wheel 2 52 is connected to the transmission mechanism 9; in this embodiment, the transmission mechanism 9 includes a connecting gear 91, a rotating shaft 92 and a driving gear 93; the rotating shaft 92 transversely penetrates the inner cavity of the discharge port 2 32, and one end of the rotating shaft 92 passes through the outer wall of the discharge port 2 32 and extends The connecting gear 91 is fixed to the end of the rotating shaft 92 outside the discharge port 32, so that the connecting gear 91 and the driving wheel 52 are meshed with each other; the driving gear 93 is fixed on the rotating shaft 92 in the inner cavity of the discharge port 32, and is used to connect the blowing mechanism 8; in this embodiment, the blowing mechanism 8 includes an impeller 81, a main telescopic member 82 and a mounting frame 86; the mounting frame 86 is fixed in the discharge port 32 outside the rotating shaft 92; the main telescopic member 82 is rotatably arranged in the center of the mounting frame 86, and the telescopic end of the main telescopic member 82 passes through the discharge end 74 and extends to the inner cavity of the magnetic focusing frame 7; the impeller 81 is fixed to the top of the telescopic end of the main telescopic member 82 The bottom end of the main telescopic member 82 is provided with a rotating gear 85, and the rotating gear 85 is meshed with the driving gear 93; a baffle 83 for shielding the inner cavity channel of the discharge end 74 is movably provided on the outer side wall of the upper end of the mounting frame 86, and a secondary telescopic member 84 is also movably provided on the mounting frame 86 below the baffle 83, and the secondary telescopic member 84 is movably connected with the baffle 83, so that when the secondary telescopic member 84 is extended and retracted, the baffle 83 can be driven to flip and open or close the inner cavity channel of the discharge end 74; wherein, the number of the driving gear 93 is at least 1, preferably 2; the number of the baffle 83 and the secondary telescopic member 84 is at least 2, preferably 4; due to the use of a special dual-axis motor, the driving mechanism 5 When the motor is working, it can drive the driving wheel 1 51 and the driving wheel 2 52 to rotate synchronously, and the rotating driving wheel 1 51 will engage the gear ring 73 to drive the magnetic field frame 7 to rotate, and the driving wheel 2 52 will engage the connecting gear 91 at one end of the transmission mechanism 9 to rotate, thereby driving the rotating shaft 92 and the driving gear 93 to rotate, so that the rotating driving gear 93 engages the rotating gear 85 and drives the main telescopic member 82 and the impeller 81 to rotate, so that the rotating impeller 81 generates an upward wind force to blow the material inside the magnetic field frame 7 from the bottom to the top; the extension and retraction of the main telescopic member 82 can drive the impeller 81 to rise and fall, change the distance between the impeller 81 and the bottom of the material guide barrel 6, and thus change the wind force of the blowing mechanism 8;When the magnetic separation is finished, the baffle plate 83 can be turned over by the extension and retraction of the auxiliary telescopic member 84 to open the inner cavity channel of the discharge end 74, so that after the magnetic frame 7 is powered off and loses its magnetic force, the magnetic material adsorbed on the inner wall of the magnetic frame 7 can slide into the discharge port 2 32 along the discharge end 74 to collect the magnetic materials in a centralized manner; in this embodiment, a shielding cover 42 is provided at the bottom of the partition frame 4 at one end of the discharge port 1 31 near the discharge port 2 32, which is used to shield the driving wheel 2 52, the connecting gear 91 and the rotating shaft 92 to prevent the non-magnetic materials selected into the gap from contacting with the driving wheel 2 52, the connecting gear 91 and the rotating shaft 92, causing damage to the transmission; in this embodiment, the main telescopic member 82 and the auxiliary telescopic member 84 can adopt one of an electric push rod, a hydraulic telescopic rod or a pneumatic telescopic rod, preferably an electric push rod, to ensure that the main telescopic member 82 and the auxiliary telescopic member 84 can be stably extended and retracted for use;

[0029] In summary, the present invention provides a dry magnetic separator with self-adjustable sorting state, by arranging a magnetic focusing frame 7 inside the sorting tank 3, and providing a blowing mechanism 8 at the discharge end 74 of the magnetic focusing frame 7, so that after the material falls into the magnetic focusing frame 7, the material can be blown upward by the operation of the blowing mechanism 8, so that the magnetic particles in the material will be affected by the magnetic force of the magnetic focusing frame 7 and adsorbed on the inner wall of the magnetic focusing frame 7, so that the non-magnetic material can be affected by the wind and enter the inner cavity of the sorting tank 3 outside the partition frame 4, so as to realize the separation of magnetic and non-magnetic materials in the material; and the spiral material guiding ridge 72 arranged on the inner wall of the magnetic focusing frame 7 can In order to increase the impact between materials during the rotation of the magnetic frame 7, the magnetic material and the non-magnetic material in the material can be fully separated. The specially shaped material guide ridge 72 can accelerate the non-magnetic material along the inner wall of the magnetic frame 7 to move toward the top of the magnetic frame 7, thereby improving the separation speed and accuracy of the magnetic separation of the material; the lifting and adjusting blowing mechanism 8 can change the distance between the blowing mechanism 8 and the bottom of the material guide barrel 6, and then change the wind force of the blowing mechanism 8, so that the device can adjust the separation state according to the particle size of the material to be magnetically separated, ensuring that materials of different particle sizes can be blown up by the blowing mechanism 8 for magnetic separation.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0031] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A dry magnetic separator capable of self-adjusting the sorting state, comprising a magnetic separator body, wherein the magnetic separator body comprises a detachably connected upper cover (2) and a sorting tank (3); a feed hopper (1) is provided at the top of the upper cover (2), and a discharge port 1 (31) and a discharge port 2 (32) are provided at the bottom of the sorting tank (3); the characteristics are: A hollow material guide cylinder (6) is vertically inserted in the center of the upper cover (2), and through grooves (61) are provided on the side walls of the upper and lower ends of the material guide cylinder (6), and the top end of the material guide cylinder (6) extends to the inner cavity of the feed hopper (1); a partition frame (4) is provided inside the separation tank (3), and the second discharge port (32) is fixed at the bottom of the partition frame (4); a magnetic field frame (7) is rotatably provided in the center of the partition frame (4), and the magnetic field frame (7) is a bucket-shaped structure with a larger upper part and a smaller lower part, and a discharge end (74) is provided at the bottom of the magnetic field frame (7), and the discharge end (74) passes through the bottom of the partition frame (4) and extends to the second discharge port (32), and a spiral material guide ridge (72) is provided on the inner wall of the magnetic field frame (7); A lifting and lowering adjustable blowing mechanism (8) and a transmission mechanism (9) connected to the blowing mechanism (8) are provided in the discharge port 2 (32) below the discharge end (74); the upper end of the blowing mechanism (8) extends to the discharge end (74); the bottom end of the material guide cylinder (6) extends to the upper part of the blowing mechanism (8) in the inner cavity of the magnetic focusing frame (7); a driving mechanism (5) for driving the magnetic focusing frame (7) to rotate is provided inside the partition frame (4), and the bottom end of the driving mechanism (5) is connected to the transmission mechanism (9), so that when the driving mechanism (5) drives the magnetic focusing frame (7) to rotate, the blowing mechanism (8) can be driven to operate through the transmission mechanism (9), thereby generating an upward wind force at the bottom end of the material guide cylinder (6).

2. A dry magnetic separator capable of self-adjusting separation state as claimed in claim 1, characterized in that: The partition frame (4) is fixed in the inner cavity of the separation tank (3) via a fixing rod (41), and a gap is left between the outer side of the partition frame (4) and the inner wall of the separation tank (3).

3. A dry magnetic separator capable of self-adjusting separation state as claimed in claim 2, characterized in that: A support rod for supporting the magnetic field focusing frame (7) is provided inside the partition frame (4), and a support ring (71) matching the support rod is provided outside the magnetic field focusing frame (7) at the support rod, so that the magnetic field focusing frame (7) can rotate inside the partition frame (4) under the action of the support rod and the support ring (71).

4. A dry magnetic separator capable of self-adjusting separation state as claimed in claim 3, characterized in that: The cross section of the material guiding ridge (72) is an obtuse triangle structure that is smaller at the top and larger at the bottom.

5. A dry magnetic separator capable of self-adjusting separation state as claimed in any one of claims 1 to 4, characterized in that: The driving mechanism (5) comprises a motor, a driving wheel 1 (51) and a driving wheel 2 (52); the motor is a dual-axis motor, and the driving wheel 1 (51) and the driving wheel 2 (52) are respectively connected to two driving shafts of the motor; a gear ring (73) meshing with the driving wheel 1 (51) is provided on the outer side of the magnetic field focusing frame (7), so that when the motor drives the driving wheel 1 (51) to rotate, the gear ring (73) can be linked to drive the magnetic field focusing frame (7) to rotate; the driving wheel 2 (52) is connected to the transmission mechanism (9).

6. A dry magnetic separator capable of self-adjusting separation state as claimed in claim 5, characterized in that: The transmission mechanism (9) comprises a connecting gear (91), a rotating shaft (92) and a driving gear (93); the rotating shaft (92) transversely penetrates the inner cavity of the second discharge port (32), and one end of the rotating shaft (92) passes through the outer wall of the second discharge port (32) and extends to one end of the second driving wheel (52); the connecting gear (91) is fixed to the end of the rotating shaft (92) outside the second discharge port (32), so that the connecting gear (91) and the second driving wheel (52) are meshed with each other; the driving gear (93) is fixed on the rotating shaft (92) in the inner cavity of the second discharge port (32) and is used to connect the blowing mechanism (8).

7. A dry magnetic separator capable of self-adjusting separation state as claimed in claim 6, characterized in that: The blowing mechanism (8) comprises an impeller (81), a main telescopic member (82) and a mounting frame (86); the mounting frame (86) is fixed in the discharge port 2 (32) outside the rotating shaft (92); the main telescopic member (82) is rotatably arranged in the center of the mounting frame (86), and the telescopic end of the main telescopic member (82) passes through the discharge end (74) and extends into the inner cavity of the magnetic focusing frame (7); the impeller (81) is fixed at the top of the telescopic end of the main telescopic member (82); the bottom end of the main telescopic member (82) is provided with A rotating gear (85) is meshed with a driving gear (93); a baffle (83) for shielding the inner cavity channel of the discharge end (74) is movably provided on the outer side wall of the upper end of the mounting frame (86); a secondary telescopic member (84) is movably provided on the mounting frame (86) below the baffle (83); the secondary telescopic member (84) is movably connected to the baffle (83), so that when the secondary telescopic member (84) is extended or retracted, the baffle (83) can be driven to flip, thereby opening or closing the inner cavity channel of the discharge end (74).

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