A vertical nano sand mill with independent drive separation

Abstract

The invention discloses an independently driven and separated vertical nano sand mill, comprising a grinding barrel, a main shaft, a rotor and a first driving unit for driving the main shaft to rotate, wherein the main shaft is installed in the grinding barrel, the main shaft is provided with a rotor, a primary separator is fixedly installed on the top part of the grinding barrel, the primary separator comprises an annular body with an annular cavity inside, a feed port connected to the annular cavity is provided on the outer wall of the annular body, a secondary separator with a spiral channel is provided in the cavity of the annular body, one end of the spiral channel is connected to the annular cavity, and the other end is a discharge port; a second driving unit for driving the secondary separator to rotate is also included; the material is separated twice by the primary separator and the secondary separator, the secondary separator is a spiral channel, so that the suction force provided by the suction device generates eddy current in the spiral channel of the secondary separator and thus increases the suction force, so that the secondary separator will not be blocked.

Description

Technical Field

[0001] The invention relates to the technical field of sand mills, in particular to an independently driven and separated vertical nano sand mill. Background Art

[0002] As is known to all, a nano sand mill is a device for grinding and crushing various products and nano-level materials. The main principle is that a three-phase asynchronous motor drives a spiral device to rotate through gears or belt drives, and during the rotation, the grinding medium (grinding beads) is brought into contact with the material to generate shear force, collision force, and friction force, so as to disperse, crush, and grind the solid particles in the slurry to achieve the effect of grinding the material, and then separate the grinding medium and the material through a screen. The material is screened by the screen and then discharged from the grinding chamber from the discharge pipe to obtain the ground material.

[0003] For example, the patent with the announcement number CN207169830U and the announcement date of April 3, 2018, and the name of "A Self-circulating Nano-grinding Machine", discloses a self-circulating nano-grinding machine, including a grinding machine housing, a feeding funnel, a grinding pool, an oscillating pool, and a control host; the grinding pool is connected to the oscillating pool below, and there is an ultrasonic generator below the oscillating pool. The oscillating pool has a first suction head and a second suction head, the height of the first suction head is higher than the second suction head, the first suction head is connected to the first suction pump through the feeding pipe, and the second suction head is connected to the circulation pipe through the second suction pump. The circulation pipe is connected to the upper circulation port of the grinding pool, and the sand with different particle sizes is separated by ultrasonic oscillation, and the fine material is directly discharged through the two suction heads. The coarse material with unqualified particle size is circulated and ground, saving a lot of manpower and material resources.

[0004] In the prior art, when separating materials and grinding media in a sand mill, a screen is set on the main shaft to separate materials and grinding media, and the screen is used to screen the materials. A suction device is set outside to suck out the materials on the screen. However, due to the different particle sizes of the materials, the screen is often blocked, and the machine needs to be stopped to clear the screen, which affects the grinding efficiency of the materials. When using grinding media of different sizes or grinding materials with different characteristics, the separation speed cannot be adjusted independently, resulting in problems such as leakage of the grinding media. Summary of the invention

[0005] The purpose of the present invention is to provide a vertical nanometer sand mill with independent drive separation to solve the above problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an independently driven and separated vertical nano sand mill, comprising a grinding barrel, a main shaft, a rotor and a first driving unit driving the main shaft to rotate, wherein the main shaft is installed in the grinding barrel, the main shaft is provided with a rotor, a first-stage separator is fixedly installed at the top part of the grinding barrel, the first-stage separator comprises an annular body with an annular cavity inside, a feed port connected to the annular cavity is provided on the outer wall of the annular body, a second-stage separator having a spiral channel is provided in the cavity of the annular body, one end of the spiral channel is connected to the annular cavity, and the other end is a discharge port;

[0007] It also includes a second driving unit for driving the secondary separator to rotate.

[0008] As mentioned above, a second driving unit is disposed at the top end of the outer wall of the grinding barrel, and an output end of the second driving unit penetrates the outer wall of the grinding barrel and is connected to the secondary separator.

[0009] As mentioned above, the number of the secondary separators is two, and the two secondary separators are symmetrically arranged about the main axis, and the two secondary separators are located in the annular cavity of the primary separator.

[0010] As mentioned above, a discharge pipe is arranged on the grinding barrel, and the discharge pipe passes through the grinding barrel and is inserted into the interior of the secondary separator.

[0011] As mentioned above, a first motor is installed at the top of the inner wall of the grinding barrel, a driving gear is installed at the output end of the first motor, a driven ring is installed at the top of the outer wall of the first-stage separator, and a sliding seal is arranged with the inner wall of the grinding barrel. An inner ring gear is installed on the driven ring, and the inner ring gear and the driving gear are meshed with each other.

[0012] As mentioned above, the secondary separator is a planar spiral plate that is gradually wound from one inner end to one outer end.

[0013] As mentioned above, the spiral pitch between the spirals of the secondary separator gradually decreases from the inner end to the outer end.

[0014] As mentioned above, an end cover is provided at the top of the grinding barrel, and the end cover and the grinding barrel are sealed and connected, the first motor is arranged on the end cover, a discharge port is provided on the part of the main shaft located between the first separator and the second separator, and the top part of the main shaft located at the discharge port is arranged as a hollow groove.

[0015] As mentioned above, the top end of the main shaft is connected with a discharge pipe.

[0016] As mentioned above, a second motor is fixedly mounted on the frame, an output end of the second motor is connected to a discharge shaft, and a terminal end of the discharge shaft is located in the grinding barrel and is connected to a medium dispersion plate.

[0017] The beneficial effects of the present invention are as follows: the material and the grinding medium are initially separated by a primary separator, and the material and the grinding medium are secondarily separated by a secondary separator. The secondary separators are spiral channels and are limited in number, so that the suction force provided by the suction device generates eddy currents in the spiral channels of the secondary separators, thereby increasing the suction force, so that the secondary separators will not be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic cross-sectional structure diagram of an embodiment provided by the present invention;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of the second driving unit and the position of the discharge pipe of the present invention;

[0021] Figure 3 A schematic cross-sectional structure diagram of another embodiment provided by the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of a partially enlarged cross-sectional structure at M;

[0023] Figure 5 A schematic cross-sectional view of another embodiment of the present invention;

[0024] Figure 6 For the present invention Figure 5 A schematic diagram of a partially enlarged cross-sectional structure at location N;

[0025] Figure 7 A schematic diagram of a partial cross-sectional structure of another embodiment provided by the present invention;

[0026] Figure 8 A schematic diagram of a partial cross-sectional structure of a straight groove, a clamping rod and an elastic member position in another embodiment provided by the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the primary separator of the present invention;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the secondary separator of the present invention;

[0029] Fig.11 It is a schematic cross-sectional structure diagram of a secondary separator of the present invention;

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the positive angle blade of the present invention;

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of the radial blade of the present invention;

[0032] Fig.14 It is a schematic diagram of the three-dimensional structure of the negative angle blade of the present invention;

[0033] Fig.15 A schematic diagram of a partial cross-sectional structure of another embodiment provided by the present invention;

[0034] Fig.16 For the present invention Fig.15 A schematic diagram of a partially enlarged cross-sectional structure at P;

[0035] Fig.17 A schematic diagram of a partial cross-sectional structure of a motion state of yet another embodiment provided by the present invention.

[0036] Description of reference numerals:

[0037] 1. Grinding barrel; 2. Spindle; 3. Rotor; 4. First motor; 5. Driving gear; 6. Primary separator; 61. Feeding port; 7. Secondary separator; 71. Outer ring; 72. Spiral portion; 73. Positioning groove; 74. Positioning member; 75. Second elastic member; 76. Limiting groove; 77. Positive angle blade; 78. Radial blade; 79. Negative angle blade; 8. Driven ring; 9. Inner ring gear; 10. End cover; 11. Discharge port; 12, hollow groove; 13, discharge pipe; 16, frame; 21, truncated table; 22, square plate; 23, positioning ring; 24, passive ring; 25, annular groove; 26, propulsion groove; 27, propulsion rod; 28, straight groove; 29, clamping rod; 30, elastic member; 31, second motor; 32, medium dispersion plate; 33, feed pipe; 34, annular transfer groove; 35, second drive unit; 36, discharge pipe. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] In each embodiment of the present invention, based on the convenience of description and understanding rather than limitation of rights, the orientation words in this embodiment: "center", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0040] like Figures 1 to 17 As shown, an embodiment provided by the present invention relates to an independently driven and separated vertical nano sand mill, comprising a grinding barrel 1, a main shaft 2, a rotor 3 and a first driving unit for driving the main shaft 2 to rotate, wherein the main shaft is installed in the grinding barrel 1, the main shaft 2 is provided with a rotor 3, a primary separator 6 is fixedly installed on the top part of the grinding barrel 1, the primary separator 6 comprises an annular body with an annular cavity inside, a feed port 61 connected to the annular cavity is provided on the outer wall of the annular body, a secondary separator 7 with a spiral channel is provided in the cavity of the annular body, one end of the spiral channel is connected to the annular cavity, and the other end is a discharge port; and a second driving unit 35 for driving the secondary separator 7 to rotate is also included.

[0041] Specifically, the primary separator 6 and the secondary separator 7 are of split structure; the number of the secondary separators 7 is two, and the two secondary separators 7 are symmetrically arranged about the main shaft 2 (that is, one secondary separator 7 is installed on each side of the main shaft 2 in the grinding barrel 1), and the two secondary separators 7 are located in the annular cavity of the primary separator 6; the top part of the outer wall of the grinding barrel 1 is provided with a second drive unit 35 (the second drive unit 35 is a device that can perform forward and reverse rotation at the drive end, preferably a permanent magnet motor), and the output end of the second drive unit 35 passes through the outer wall of the grinding barrel 1 and is connected to the secondary separator 7 The two secondary separators 7 can be connected to each other, and the two secondary separators 7 can be driven to rotate by a second driving unit 35 at the same time, so that the two secondary separators 7 can rotate and stop at the same time, so that the speeds of the two secondary separators 7 can be adjusted at the same time. Alternatively, the two secondary separators 7 are each connected to a second driving unit 35, that is, two second driving units 35 are arranged on the outer wall of the grinding barrel 1, and the output ends of the two second driving units 35 are each connected to a secondary separator 7, so that the speeds of the two secondary separators 7 are different (the speeds of the two second driving units 35 are different, with The rotation speeds of the two secondary separators 7 are also different), and the rotation speeds of the two second driving units 35 can also be adjusted to be the same, so that the rotation speeds of the two secondary separators 7 are also the same, and adaptive adjustment is performed according to the rotation speed changes of the secondary separators 7 required for different materials; a discharge pipe 36 is arranged on the grinding barrel 1, and the discharge pipe 36 passes through the grinding barrel 1 and is inserted into the interior of the secondary separator 7. The grinding barrel 1 is a cylindrical barrel structure, and an end cover 10 is arranged on the top of the grinding barrel 1. The main shaft 2 is rotatably arranged on the end cover 10, and the end cover 10 is dynamically sealed and connected to the grinding barrel 1 A feed pipe 33 is provided at the bottom end of the grinding barrel 1. The feed pipe 33 is used to transport the material into the grinding barrel 1. When the material needs to be ground, the material is transported into the grinding barrel 1 through the feed pipe 33, and the main shaft 2 is driven to rotate by the permanent magnet motor. At the same time, the second drive unit 35 is started to drive the two secondary separators 7 to rotate. By adjusting the speed of the second drive unit 35, the speed of the two secondary separators 7 can be adjusted. After the material enters the secondary separator 7, the material in the secondary separator 7 is sucked out of the grinding barrel 1 through the suction device and the discharge pipe 36;The main shaft 2 drives the rotor 3 to rotate (the rotor 3 can be selected from different grinding rotors 3 such as turbine type, pin type, disc type, etc., and the shape of the rotor 3 can be adjusted according to various grinding objects (i.e. materials) so that the materials can be ground more evenly). The grinding medium and the material are mixed by the centrifugal force generated by the rotation of the rotor 3. The material is continuously impacted, rubbed and squeezed by the centrifugal force of the rotation of the rotor 3, so that extrusion force, shear force and impact force are generated between the material and the grinding medium, breaking the agglomeration between the materials and crushing the fineness to achieve the purpose of reducing the particle size of the materials and realize the grinding of the materials. The materials and the grinding medium are screened by the fixed primary separator 6, and the materials are screened by the secondary separator 7, so that the screened materials are discharged from the grinding barrel 1 from the spiral channel of the secondary separator 7. The secondary separator 7 will not be blocked by setting the spiral channel of the secondary separator 7. ;

[0042] The independently driven separation vertical nano sand mill provided in an embodiment of the present invention performs preliminary separation of materials and grinding media through a primary separator 6, and performs secondary separation of materials through a secondary separator 7. The secondary separators 7 are spiral channels and are limited in number, so that the suction force provided by the suction device generates eddy currents in the spiral channels of the secondary separators 7 and thus increases the suction force, so that the secondary separators 7 will not be blocked.

[0043] In another embodiment provided by the present invention, the primary separator 6 and the secondary separator 7 are of an integrated structure, the secondary separator 7 is arranged inside the primary separator 6 and the primary separator 6 and the secondary separator 7 are coaxially connected, the secondary separator 7 seals the top and bottom ends of the annular cavity of the primary separator 6, a portion of the main shaft 2 located between the primary separator 6 and the secondary separator 7 is provided with a discharge port 11, the top portion of the main shaft 2 located at the discharge port 11 is provided with a hollow groove 12, and the top dynamic seal of the main shaft 2 is rotatably connected with a discharge pipe 13.

[0044] Specifically, the first-stage separator 6 is an annular body with an annular cavity inside, and a feed port 61 connected to the annular cavity is arranged on the outer wall of the annular body, and the feed port 61 is used to separate the material and the grinding medium. The secondary separator 7 is a flat spiral plate gradually wound from one end inside to one end outside, and the spiral spacing between the spirals of the secondary separator 7 gradually decreases from one end inside to one end outside. A second motor 31 is fixedly mounted on the frame 16, and an output end of the second motor 31 is connected to a discharge shaft, and the end of the discharge shaft is located in the grinding barrel 1 and is connected to a medium dispersion plate 32, and the medium dispersion plate 32 is used to guide the movement direction of the grinding medium and the material. When the material needs to be ground, the permanent magnet motor is started to drive the main shaft 2 to rotate, and the main shaft 2 drives the rotating The rotor 3 rotates (the rotor 3 can be selected into different grinding rotors such as turbine type, pin type, disc type, etc., and the shape of the rotor 3 can be adjusted according to different grinding objects (i.e. materials) so that the materials can be ground more evenly). The grinding medium and the materials are mixed by the pins on the rotor 3. The materials are continuously impacted, rubbed and squeezed by the pins on the rotor 3, so that extrusion force, shear force and impact force are generated between the materials and the grinding medium, breaking the agglomeration between the materials and crushing the fineness to achieve the purpose of reducing the particle size of the materials. At the same time, the second motor 31 is started to drive the medium dispersion plate 32 to rotate through the discharge shaft. Since the particle size of the materials is small, the medium dispersion plate 32 generates negative pressure when rotating to suck out the materials, and the grinding media is left in the grinding barrel 1. , the material follows the eddy current generated by the rotation of the main shaft 2, the rotor 3 and the medium dispersion plate 32, and reaches the position of the primary separator 6 and the secondary separator 7 along the inner wall of the grinding barrel 1, and the material is sucked into the interior of the primary separator 6, and the material with a larger particle size enters the grinding barrel 1 from the feed port 61 of the primary separator 6 to enter a new round of grinding, while the material with a smaller particle size is sucked into the spiral gap (that is, the arc-shaped spiral path) of the secondary separator 7, so that the material with a smaller particle size is discharged from the grinding barrel 1 from the secondary separator 7, that is, the grinding medium and the material are separated and processed through the feed port 61 of the primary separator 6, and the material enters the annular cavity of the primary separator 6 through the feed port 61, and the material with a larger mass (or a larger volume) is discharged from the primary separator 6. The material in the annular cavity enters the secondary separator 7 from the end where the secondary separator 7 is connected to the annular cavity, and the material is screened through the opening at the end where the secondary separator 7 is connected to the annular cavity, so that the material with a smaller particle size is discharged from the secondary separator 7 to the grinding barrel 1, and the material with a larger particle size re-enters the grinding barrel 1 to be ground again, thereby achieving the grinding and separation of the material. In addition, since the spiral pitch between the spirals of the secondary separator 7 gradually decreases from the inner end to the outer end, it has a better suction effect, so that the material can be quickly discharged from the grinding barrel 1 from the secondary separator 7 after entering the interior of the secondary separator 7, thereby completing the grinding of the material.When the material enters the secondary separator 7, a certain suction force is conveyed into the discharge pipe 13 through the suction device, so that the material enters the discharge pipe 13 from the secondary separator 7 through the hollow groove 12 at the top part of the main shaft 2, and the grinding and discharge processing of the material are completed, so that the grinding of the material is more uniform, and because the number of spiral channels of the secondary separator 7 is limited, the suction force of the discharge pipe 13 on the material is greater, and the material will not be dispersed like on the screen, so that the suction force of the discharge pipe 13 is specifically distributed in the spiral channel, so that the secondary separator 7 will not be blocked, and the suction force in the discharge pipe 13 will generate eddy currents in the spiral channel of the secondary separator 7 to increase the suction force, further The clogging probability of the secondary separator 7 is reduced; when the material and the grinding medium are separated in the sand mill, a screen is set on the main shaft 2, and the material and the grinding medium are separated by the screen, and the screen screens the material, but due to the different particle sizes of the materials, the screen is often blocked, and it is necessary to stop the machine to clear the screen, which affects the grinding efficiency of the material; the material and the grinding medium are initially separated by the primary separator 6, and the material is secondarily separated by the secondary separator 7. The secondary separator 7 is a spiral channel and the number is limited, so that the suction force provided by the suction device generates eddy currents in the spiral channel of the secondary separator 7 to increase the suction force, so that the secondary separator 7 will not be blocked.

[0045] Furthermore, the secondary separator can also be configured to be equipped with different separation forms such as spiral structure, positive angle blades 77, radial blades 78, negative angle blades 79 and wedge-shaped structure. Specifically, by setting up secondary separators 7 of different forms, it is possible to adapt to the discharge methods required for different materials.

[0046] In another embodiment provided by the present invention, a first motor 4 is installed at the top of the inner wall of the grinding barrel 1 (that is, on the end cover 10), a driving gear 5 is installed at the output end of the first motor 4, a driven ring 8 is installed at the top of the outer wall of the primary separator 6, and a sliding seal is arranged with the inner wall of the grinding barrel 1, an inner ring gear 9 is installed on the driven ring 8, and the inner ring gear 9 and the driving gear 5 are meshed with each other.

[0047] Specifically, in the prior art, the speed of the separator in the sand mill rotates synchronously with the rotor, and it is impossible to adjust the speed accordingly according to the physical properties of different grinding slurries (such as solid content, viscosity, particle size, flow rate) to obtain a better separation effect. In this embodiment, by adjusting the speed of the first motor 4 and then adjusting the speed between the driving gear 5 and the inner ring gear 9, the speed of the primary separator 6 and the secondary separator 7 is different from that of the main shaft 2 and the rotor 3, so that the primary separator 6 and the secondary separator 7 can be adjusted according to the physical properties of different grinding slurries (such as solid content, viscosity, particle size, flow rate) to obtain a better separation effect. The separation speed can be adjusted accordingly according to the random solid content, random viscosity, and random particle size of the material and the grinding medium under different working conditions to achieve the required separation effect, and the grinding barrel 1 adopts a vertical structure, so that the particle size distribution of the ground material is more concentrated, which is particularly suitable for the grinding of nano-level products. A grinding medium of 0.05 mm can be used, and the fineness of the grinding slurry can reach below 50 nm. In the prior art, the speed of the separator in the sand mill rotates synchronously with the rotor 3, and it is impossible to adjust the speed accordingly according to the physical properties of different grinding slurries (such as solid content, viscosity, particle size, and flow rate) to obtain a better separation effect; in this embodiment, the rotor 3 is driven to rotate by the main shaft 2, so that the rotor 3 grinds the material in the grinding barrel 1, and at the same time, the first motor 4 is started to drive the driving gear 5 to rotate, and the driving gear 5 drives the inner ring gear 9 to rotate. The inner ring gear 9 drives the primary separator 6 and the secondary separator 7 to rotate through the driven ring 8, so that the primary separator 6 and the secondary separator 7 can separate the material and the grinding medium, so that the ground material can be discharged from the primary separator 6 and the secondary separator 7 to the grinding barrel 1, and the speed of the first motor 4 is adjusted to adjust the speed between the driving gear 5 and the inner ring gear 9, so that the primary separator 6 and the secondary separator 7 can be adjusted according to the physical properties of different grinding slurries (such as solid content, viscosity, particle size, and flow rate) to obtain a better separation effect.

[0048] In another embodiment provided by the present invention, the secondary separator 7 is divided into an outer ring 71 on the outside and a spiral portion 72 on the inside, the outer ring 71 of the secondary separator 7 is fixedly installed in the annular cavity of the primary separator 6, and the spiral portion 72 of the secondary separator 7 is suspended in the annular cavity (that is, the top and bottom ends of the spiral portion 72 of the secondary separator 7 are not connected to the annular cavity of the primary separator 6), the top and bottom ends of the spiral portion 72 of the secondary separator 7 are slidably sealed and connected to the top and bottom ends of the primary separator 6 through a seal, the spiral portion 72 of the secondary separator 7 is rotationally connected to the outer ring 71, a positioning groove 73 is provided on the end of the spiral portion 72 connected to the outer ring 71, a positioning member 74 is slidably installed in the positioning groove 73, the positioning member 73 and the positioning groove 73 are connected by a second elastic member 75, and a plurality of limiting grooves 76 are evenly provided on the outer wall of the end of the outer ring 71 connected to the spiral portion 72, and the limiting grooves 76 and the positioning member 74 are abutted and matched.

[0049] Specifically, since there are many materials and the particles are large, it is inevitable that there will be large-volume materials that cause blockage on the end of the secondary separator 7 connected to the annular cavity. When the end of the secondary separator 7 connected to the annular cavity is blocked, since the suction force in the discharge pipe 13 remains unchanged, and the end of the secondary separator 7 connected to the annular cavity is blocked, the suction force in the discharge pipe 13 acts on the spiral portion 72 of the secondary separator 7, and the blocked position of the spiral portion 72 of the secondary separator 7 will vibrate under the impact of other materials, so that the spiral portion 72 of the secondary separator 7 has a tendency to rotate (because the outer ring 71 is fixedly installed on the primary separator The screw portion 72 is then rotated to the left of the locking cam 76. The locking cam 76 is in a state of being pushed against the locking cam 76 by the spring 72. The locking cam 76 is in a state of being pushed against the locking cam 76. Fig.17 As shown), larger materials are discharged from the discharge pipe 13. This will bring certain defects, that is, some unqualified materials may enter the discharge pipe 13 from the secondary separator 7 and be discharged. A corresponding sensor mechanism should be set to identify the materials discharged from the discharge pipe 13, and perform additional quality inspection on the materials discharged from the discharge pipe 13 to ensure that the material processing is within the qualified range. If the material is unqualified, other treatments should be carried out.

[0050] In another embodiment provided by the present invention, a truncated table member 21 is provided on the part of the main shaft 2 located between the top of the grinding barrel 1 and the primary separator 6, and a plurality of square plates 22 are evenly installed on the outer wall of the primary separator 6 along its circumferential direction, and each of the square plates 22 is connected by a positioning ring 23, and a passive ring 24 is slidably sleeved on the top of the positioning ring 23, that is, an annular groove 25 is provided at the bottom end of the passive ring 24, and the annular groove 25 and the positioning ring 23 are slidably installed, and an annular receiving groove 34 is provided on the end cover 10, and the annular receiving groove 34 and the positioning ring 23 are mutually connected. In cooperation with each other, a plurality of push grooves 26 are evenly arranged on the inner wall of the annular groove 25 along its circumferential direction, a plurality of push rods 27 are evenly installed on the outer wall of the positioning ring 23 along its circumferential direction, and each push rod 27 is slidably installed in the corresponding push groove 26, a plurality of straight grooves 28 are evenly arranged on the inner wall of the passive ring 24 along its circumferential direction, a clamping rod 29 is slidably installed in each straight groove 28, each clamping rod 29 is connected to the inner wall of the corresponding straight groove 28 by a first elastic member 30, and each clamping rod 29 is pressed against the outer wall of the truncated table member 21.

[0051] Specifically, in this embodiment, the first motor 4, the driving gear 5, the driven ring 8 and the inner ring gear 9 are no longer arranged at the bottom of the end cover 10. When the main shaft 2 rotates, the main shaft 2 drives the truncated table 21 to rotate, and the grinding medium and the material are mixed by the rod pins and the turbine on the rotor 3. The material is continuously hit, rubbed and squeezed by the rod pins on the rotor 3, so that extrusion force, shear force and impact force are generated between the material and the grinding medium, breaking the agglomeration between the materials and crushing the fineness to achieve the purpose of reducing the particle size of the materials. At the same time, the second motor 31 is started to drive the medium dispersion plate 32 to rotate through the discharge shaft. Since the particle size of the material is small, the medium dispersion plate 32 generates negative pressure when rotating to suck out the material, and the grinding medium is left in the grinding barrel. 1, the material follows the eddy current generated by the rotation of the main shaft 2, the rotor 3 and the medium dispersion plate 32, and reaches the position of the primary separator 6 and the secondary separator 7 along the inner wall of the grinding barrel 1. The material is sucked into the interior of the primary separator 6, and the material with a larger particle size enters the grinding barrel 1 from the feed port 61 of the primary separator 6 to enter a new round of grinding, while the material with a smaller particle size is sucked into the spiral gap (i.e., the arc-shaped spiral path) of the secondary separator 7, so that the material with a smaller particle size is discharged from the grinding barrel 1 from the secondary separator 7, so as to achieve the grinding and separation of the material. In addition, since the spiral spacing between the spirals of the secondary separator 7 gradually decreases from the inner end to the outer end, the material can enter the interior of the secondary separator 7. The grinding barrel 1 is quickly discharged from the secondary separator 7, thereby completing the grinding of the material. The eddy current generated when the main shaft 2, the rotor 3 and the medium dispersion plate 32 rotate will generate a certain axial thrust on the passive ring 24 (that is, the eddy current will push the passive ring 24 to move toward the top of the main shaft 2), so that the eddy current generated by the material will have a certain impact on the passive ring 24 and the primary separator 6 that are slidingly sealed with the inner wall of the grinding barrel 1, which is similar to axial movement (axial movement refers to the inevitable small movement of the motor shaft along the axial direction during operation), so that the passive ring 24, the primary separator 6 and the secondary separator 7 may be damaged under the impact of the eddy current, thereby affecting the grinding of the material. In this embodiment, The eddy current generated by the material acts on the passive ring 24. Under the impact of the eddy current, the passive ring 24 slides axially on the positioning ring 23 (slides on the axial top side of the main shaft 2), and the passive ring 24 slides into the annular accepting groove 34, so that the passive ring 24 drives the clamping rod 29 to slide toward the axial top side of the main shaft 2. Since the first elastic member 30 (the first elastic member 30 is an original member that can be telescopically reset, preferably a spring) generates a thrust at one end of the clamping rod 29, the clamping rod 29 is always pressed against the outer wall of the truncated table member 21. When the main shaft 2 drives the truncated table member 21 to rotate, since the clamping rod 29 is pressed against the outer wall of the truncated table member 21, friction transmission is performed between the truncated table member 21 and the clamping rod 29.The truncated table 21 drives the passive ring 24 to rotate through the abutting rod 29 (since the inner wall of the annular groove 25 is evenly provided with a plurality of propulsion grooves 26 along its circumferential direction, the outer wall of the positioning ring 23 is evenly provided with a plurality of propulsion rods 27 along its circumferential direction, and each of the propulsion rods 27 is slidably installed in the corresponding propulsion groove 26, so that the positioning ring 23 and the passive ring 24 can slide axially, and due to the sliding arrangement between the propulsion groove 26 and the propulsion rod 27, the passive ring 24 can drive the positioning ring 23 to rotate), the passive ring 24 drives the positioning ring 23 to rotate, the positioning ring 23 drives each square plate 22 to rotate synchronously, the square plate 22 drives the primary separator 6 and the secondary separator 7 to rotate, when the passive ring 2 When the positioning ring 23 slides axially (slides on the axial top side of the main shaft 2) under the driving effect of the eddy current, the generatrix on the outer wall of the truncated table 21 is inclined, so that the position of the pressing rod 29 pressed against the outer wall of the truncated table 21 changes, so that the pressing of the pressing rod 29 on the first elastic member 30 changes, and the elastic force provided by the first elastic member 30 to the pressing rod 29 changes (that is, when the pressing rod 29 presses the first elastic member 30 more, the elastic force provided by the first elastic member 30 to the pressing rod 29 is greater, and the friction between the pressing rod 29 and the truncated table 21 is greater; when the pressing rod 29 presses the first elastic member 30 less, the elastic force provided by the first elastic member 30 to the pressing rod 29 is smaller, and the friction between the pressing rod 29 and the truncated table 21 is greater. 21 is smaller), thereby adjusting the friction between the clamping rod 29 and the truncated table member 21, that is, when the elastic force provided by the first elastic member 30 to the clamping rod 29 is smaller, the friction between the truncated table member 21 and the clamping rod 29 becomes smaller, so that the idling between the truncated table member 21 and the clamping rod 29 increases, and because the rotation speed of the main shaft 2 is constant, the rotation speed of the clamping rod 29 and the passive ring 24 driven by the truncated table member 21 decreases; when the elastic force provided by the first elastic member 30 to the clamping rod 29 is smaller, the friction between the truncated table member 21 and the clamping rod 29 becomes smaller, so that the idling between the truncated table member 21 and the clamping rod 29 increases, and because the rotation speed of the main shaft 2 is constant, the rotation speed of the clamping rod 29 and the passive ring 24 driven by the truncated table member 21 decreases; When the elastic force provided by the first elastic member 30 to the clamping rod 29 is relatively large, the friction force between the truncated cone member 21 and the clamping rod 29 becomes larger, so that there will be no idling or the idling is reduced between the truncated cone member 21 and the clamping rod 29, and because the rotation speed of the main shaft 2 is constant, the truncated cone member 21 drives the rotation speed of the clamping rod 29 and the passive ring 24 to increase; the rotation speed of the primary separator 6 and the secondary separator 7 is different from that of the main shaft 2 and the rotor 3, so that the primary separator 6 and the secondary separator 7 can passively adjust the corresponding rotation speed according to the physical properties of different grinding slurries (such as solid content, viscosity, particle size, flow rate) to obtain the separation effect; the truncated cone member 21 can be a top surface larger than its bottom surface, or a top surface smaller than its bottom surface.The adaptable truncated cone 21 drives the rotation speed change of the abutting rod 29 and the passive ring 24. That is, when the main shaft 2 and the truncated cone 21 rotate, the main shaft 2 and the rotor 3 generate eddy currents, so that the passive ring 24 slides axially on the positioning ring 23. When the rotation speed of the passive ring 24 and the positioning ring 23 needs to be reduced, a truncated cone 21 with a top surface smaller than its bottom surface is used (e.g., Figure 7 As shown), when it is necessary to increase the rotation speed of the passive ring 24 and the positioning ring 23, a truncated table member 21 with a top surface larger than its bottom surface is used (such as Figure 6 As shown), at the same time, by raising and lowering the passive ring 24 on the positioning ring 23, the impact of the eddy current generated by the main shaft 2 and the rotor 3 during rotation on the primary separator 6 and the secondary separator 7 can be effectively offset, thereby improving the service life of the primary separator 6 and the secondary separator 7. By converting the axial propulsion force generated by the eddy current acting on the primary separator 6 and the secondary separator 7 into a driving force that pushes the passive ring 24 to slide and thereby adjusts the rotational speed of the primary separator 6 and the secondary separator 7, the axial propulsion force that has side effects on the primary separator 6 and the secondary separator 7 (that is, the axial propulsion force that may cause damage to the primary separator 6 and the secondary separator 7) is converted into a driving force that can adjust the rotational speed of the primary separator 6 and the secondary separator 7, so that the grinding of the material is more stable and uniform.

[0052] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An independently driven and separated vertical nano sand mill, comprising a grinding barrel, a main shaft, a rotor and a first driving unit for driving the main shaft to rotate, wherein the main shaft is installed in the grinding barrel and the main shaft is provided with a rotor, characterized in that: A primary separator is fixedly installed at the top of the grinding barrel, and the primary separator includes an annular body with an annular cavity inside, and a feed port connected to the annular cavity is arranged on the outer wall of the annular body, and a secondary separator with a spiral channel is arranged in the annular cavity of the annular body, one end of the spiral channel is connected to the annular cavity, and the other end is a discharge port; Also included is a second driving unit for driving the secondary separator to rotate; The number of the secondary separators is two, and the two secondary separators are symmetrically arranged about the main axis, and the two secondary separators are located in the annular cavity of the primary separator; The secondary separator is a flat spiral plate that is gradually wound from one inner end to the outer end; The spiral pitch between the spirals of the secondary separator gradually decreases from the inner end to the outer end; The secondary separator is divided into an outer ring on the outside and a spiral part on the inside. The outer ring of the secondary separator is fixedly installed in the annular cavity of the first-stage separator, and the spiral part of the secondary separator is suspended in the annular cavity. The top and bottom ends of the spiral part of the secondary separator are slidingly sealed and connected to the top and bottom ends of the first-stage separator through a seal. The spiral part and the outer ring of the secondary separator are rotationally connected. A positioning groove is provided on the end of the spiral part connected to the outer ring. A positioning member is slidably installed in the positioning groove. The positioning member and the positioning groove are connected by a second elastic member. A plurality of limiting grooves are evenly provided on the outer wall of the end of the outer ring connected to the spiral part, and the limiting groove and the positioning member are abutted and matched.

2. The independently driven and separated vertical nano sand mill according to claim 1, characterized in that: A second driving unit is disposed at the top end of the outer wall of the grinding barrel, and an output end of the second driving unit penetrates the outer wall of the grinding barrel and is connected to the secondary separator.

3. The independently driven and separated vertical nano sand mill according to claim 1, characterized in that: The grinding barrel is provided with a discharge pipe, which passes through the grinding barrel and is inserted into the interior of the secondary separator.

4. The independently driven and separated vertical nano sand mill according to claim 1, characterized in that: A first motor is installed at the top of the inner wall of the grinding barrel, and a driving gear is installed at the output end of the first motor. A driven ring is installed at the top of the outer wall of the first-stage separator, which is slidingly sealed with the inner wall of the grinding barrel. An inner ring gear is installed on the driven ring, and the inner ring gear and the driving gear are meshed with each other.

5. The independently driven and separated vertical nano sand mill according to claim 4, characterized in that: An end cover is provided at the top of the grinding barrel, and the end cover and the grinding barrel are sealed and connected, the first motor is arranged on the end cover, a discharge port is provided on the part of the main shaft located between the first separator and the second separator, and the top part of the main shaft located at the discharge port is arranged as a hollow groove.

6. The independently driven and separated vertical nano sand mill according to claim 5, characterized in that: The top end of the main shaft is connected with a discharge pipe.

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