A coarse and fine grinding integrated nanometer sand mill

Abstract

This invention discloses an integrated coarse and fine grinding nano-sand mill, relating to the field of sand mills. It includes a machine body and a grinding cylinder mounted on the machine body. A rotor is rotatably mounted inside the grinding cylinder. A separating element is disposed inside the grinding cylinder. An installation groove is formed on the rotor, and a spiral scraper is disposed inside the installation groove. The scraper is in contact with the outer circumferential surface of the separating element. A transfer channel is provided on the rotor. One end of the transfer channel communicates with the inside of the installation groove, and the other end communicates with the grinding area inside the grinding cylinder. In this integrated coarse and fine grinding nano-sand mill, during rotor rotation, the scraper can scrape off the grinding media and large-sized materials adhering to the outer circumferential surface of the separating element. Under the conveying effect of the spiral scraper, the scraped material enters the transfer channel and is transported to the grinding area under centrifugal force for further grinding.

Description

Technical Field

[0001] This invention relates to the field of sand mills, and specifically to a nano-sand mill that integrates coarse and fine grinding. Background Technology

[0002] As is widely known, in many industrial fields such as chemical engineering, pharmaceuticals, coatings, food, new energy, and new materials, it is often necessary to grind materials to the micron or even nanometer level to meet the requirements of subsequent processing or applications regarding material fineness, specific surface area, and other properties. Sand mills, as a highly efficient grinding equipment, are widely used due to their high grinding efficiency and good product fineness.

[0003] For example, the Chinese patent document with authorization announcement number CN204816706U, announcement date of 2015-12-02, and titled "Laboratory Circulating Horizontal Nano-Sand Mill," comprises a frame, motor, grinding unit, circulating pump, material tank, cooling device, and electrical control system. The grinding unit consists of inner and outer grinding cylinders, main shaft, arc-shaped three-claw eccentric grinding disc, dynamic separator, front cover of grinding cylinder, wear-resistant plate, and mechanical seal. This utility model's laboratory circulating horizontal nano-sand mill, with its arc-shaped three-claw eccentric disc structure, combines the characteristics of traditional disc and pin types, effectively increasing the relative speed and collision force between the material and the grinding beads, thereby achieving a lower nanoscale fineness. This utility model's laboratory circulating horizontal nano-sand mill is wear-resistant, has high grinding efficiency, long service life, and is extremely convenient for material replacement, color changing, disassembly, and cleaning. It is widely used for grinding various nanomaterials such as nano-pigments and printing inks.

[0004] The shortcoming of the existing technology is that a separation mechanism is set inside the grinding cylinder. Smaller materials enter the interior through the holes of the separation mechanism and are discharged through the discharge pipe. However, larger materials and grinding media are intercepted outside the separation mechanism and accumulate around it. On the one hand, this will cause blockage of the separation mechanism. On the other hand, the grinding media will carry away qualified materials near the separation mechanism under the action of centrifugation, thus affecting the material discharge efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated coarse and fine grinding nano-grinding mill to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A coarse and fine grinding integrated nano-sand mill includes a machine body and a grinding cylinder disposed on the machine body. A rotor is rotatably disposed inside the grinding cylinder. A separator is disposed inside the grinding cylinder. An installation groove is formed on the rotor. A spiral scraper is disposed inside the installation groove. The scraper is in contact with the outer peripheral surface of the separator. A transfer channel is provided on the rotor. One end of the transfer channel is connected to the inside of the installation groove, and the other end is connected to the grinding area inside the grinding cylinder.

[0008] The aforementioned integrated coarse and fine grinding nano-sand mill is provided with a first grinding unit and a second grinding unit on its body, wherein the discharge end of the first grinding unit is connected to the feed end of the second grinding unit.

[0009] The aforementioned integrated coarse and fine grinding nano-sand mill includes a first transmission ring rotatably mounted on the machine body, and the first transmission ring is connected to the rotor in a non-rotational manner. The scraper is fixed to the first transmission ring, and the mill also includes a power component for driving the first transmission ring to move axially.

[0010] The aforementioned integrated coarse and fine grinding nano-sand mill includes a power component comprising a transmission rod disposed on the first transmission ring, and a transmission groove adapted to the transmission rod being provided on the machine body.

[0011] In the aforementioned integrated coarse and fine grinding nano-sand mill, a second transmission ring is provided inside the rotor. The second transmission ring is fixedly connected to the scraper. A first sealing member is provided on the second transmission ring. The first sealing member has a first position for blocking the transfer channel and a second position for opening the transfer channel.

[0012] The above-mentioned coarse and fine grinding integrated nano-sand mill is provided with a cooling module on the machine body for cooling the material inside the grinding cylinder. The cooling module includes a shell sleeved on the outside of the grinding cylinder, a coolant inlet and a coolant outlet on the shell, and a liquid supply component connected to the coolant inlet.

[0013] In the above-mentioned integrated coarse and fine grinding nano-sand mill, a temperature sensor is installed inside the grinding cylinder, and the temperature sensor is electrically connected to the liquid supply component.

[0014] The aforementioned integrated coarse and fine grinding nano-sand mill has a spare channel on the housing and a second sealing member slidably disposed on the machine body. The second sealing member has a third position for blocking the spare channel and a fourth position for opening the spare channel.

[0015] In the aforementioned integrated coarse and fine grinding nano-sand mill, a first spring is provided between the second sealing component and the machine body.

[0016] In the aforementioned integrated coarse and fine grinding nano-sand mill, a sliding seat is slidably disposed on the first transmission ring, a transmission component is slidably disposed inside the sliding seat, a second spring is disposed between the transmission component and the sliding seat, an inclined surface is disposed on the second sealing component, and the transmission component has a first state of being away from the inclined surface and a second state of being in contact with the inclined surface.

[0017] In the above technical solution, the present invention provides an integrated coarse and fine grinding nano-sand mill, which has an installation groove and a transfer channel on the rotor, and a spiral scraper is provided on the inner wall of the installation groove. The inner wall of the scraper is in contact with the outer peripheral surface of the separator. In this way, during the rotation of the rotor, the scraper can scrape off the grinding media and large-sized materials attached to the outer peripheral surface of the separator. Under the conveying effect of the spiral scraper, the scraped material moves towards the inside of the installation groove and enters the inside of the transfer channel. Under the action of centrifugal force, it is transported to the grinding area for further grinding. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a top view structural diagram provided for an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram provided for an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of a local structure at point A;

[0023] Figure 5 This is a partial cross-sectional structural schematic diagram provided for another embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection structure of the scraper provided in another embodiment of the present invention;

[0025] Figure 7 This is a partial cross-sectional structural schematic diagram provided in another embodiment of the present invention;

[0026] Figure 8 This is a partial cross-sectional structural schematic diagram provided for another embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Body; 2. Grinding cylinder; 3. Rotor; 4. Separator; 5. Mounting groove; 6. Scraper; 7. Transfer channel; 8. Through hole; 9. First grinding unit; 10. Second grinding unit; 11. First transmission ring; 12. Transmission rod; 13. Transmission groove; 14. Second transmission ring; 15. First sealing element; 16. Perforation; 17. Housing; 18. Coolant inlet; 19. Coolant outlet; 20. Annular space; 21. Spare channel; 22. Second sealing element; 2201. Annular part; 2202. L-shaped part; 23. Movable groove; 24. First spring; 25. Sliding seat; 26. Transmission element; 27. Second spring; 28. Inclined surface; 29. ​​Impact part; 30. Float. Detailed Implementation

[0029] 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.

[0030] In the description of this invention, it should be understood that, Figure 4 The position of the coolant outlet 19 relative to the coolant inlet 18 is considered "upper" and vice versa. Figure 4 The position of the transfer channel 7 relative to the separating component 4 is to the left, and vice versa. The terms "center", "length", "width", "degree", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0031] Reference Figure 1-8 This invention provides an integrated coarse and fine grinding nano-sand mill, comprising a body 1 and a grinding cylinder 2 disposed on the body 1. A rotor 3 is rotatably disposed inside the grinding cylinder 2, and a separator 4 is disposed inside the grinding cylinder 2. An installation groove 5 is provided on the rotor 3, and a spiral scraper 6 is disposed inside the installation groove 5. The scraper 6 is in contact with the outer peripheral surface of the separator 4. A transfer channel 7 is provided on the rotor 3, one end of which is connected to the inside of the installation groove 5, and the other end is connected to the grinding area inside the grinding cylinder 2.

[0032] Specifically, the machine body 1 is a movable carrier, which houses a power source such as a permanent magnet motor. The rotor 3 is connected to the output end of the power source via a coupling. Multiple pins are evenly arranged on the outer circumference of the rotor 3. The grinding cylinder 2 is fitted around the outside of the rotor 3, and the area between the inner circumference of the grinding cylinder 2 and the outer circumference of the rotor 3 is the grinding area. The separating element 4 is a cylindrical screen-like structure, coaxially arranged with the rotor 3. The feed end is located at the top left side of the machine body 1 and communicates with the internal space of the grinding cylinder 2. The discharge end communicates with the internal space of the separating element 4 and is connected to the separating element. The separator 4 is coaxially arranged. During material grinding, the grinding media and material are first added to the grinding area through the feed end. Then, the rotor 3 is driven to rotate by a power source. When the pins collide with the grinding media, the grinding media moves at high speed. The force provided by the grinding media can grind the material into smaller sizes. The ground material is discharged through the separator 4 and the discharge end. The grinding media and unqualified materials (hereinafter referred to as foreign matter for convenience) are blocked outside the separator 4. This is existing technology and will not be elaborated further. The core innovation of this invention is... One novel aspect is that the rotor 3 has an installation groove 5 and a transfer channel 7. One end of the transfer channel 7 communicates with the internal space of the installation groove 5, and the other end communicates with the grinding area near the feed end. A spiral scraper 6 is installed inside the installation groove 5, with its inner wall fitting against the outer circumferential surface of the separator 4. Multiple through holes 8 are arranged in an array on the side wall of the installation groove 5. Preferably, there are two scraper blades 6, arranged symmetrically about the central axis of the rotor 3. The spiral direction of the scraper blades 6 allows them to convey foreign objects to the left when rotating. In this embodiment, the scraper blades... 6 is directly fixed to the inner wall of the mounting groove 5. The purpose of this setting is that the ground material is transported to the interior of the separator 4 by a pump suction method, while foreign objects are blocked near the outer peripheral surface of the separator 4. However, during the rotation of the rotor 3, the scraper 6 will rotate synchronously. The scraper 6 can scrape off the foreign objects attached to the outer peripheral surface of the separator 4. Under the conveying effect of the spiral scraper 6, the scraped material moves towards the interior of the mounting groove 5 and enters the transfer channel 7. Under the action of centrifugal force, it is transported to the grinding area for further grinding.

[0033] Preferably, the machine body 1 is provided with a first grinding unit 9 and a second grinding unit 10, with the discharge end of the first grinding unit 9 connected to the feed end of the second grinding unit 10. Specifically, the first grinding unit 9 is a coarse grinding unit, and the second grinding unit 10 is a fine grinding unit. The size of the grinding media in the second grinding unit 10 is smaller than that in the first grinding unit 9, and the rotational speed of the rotor 3 of the second grinding unit 10 is greater than that of the rotor 3 of the first grinding unit 9. The first grinding unit 9 is used to perform preliminary crushing and grinding on the initial coarse material, reducing the particle size to the micrometer level. The second grinding unit 10 is used to perform deep fine grinding on the material processed by the coarse grinding unit, further reducing the particle size to the nanometer level. This completes the graded grinding of the material. The discharge end of the first grinding unit 9 and the feed end of the second grinding unit 10 are connected by a connecting pipe, making the grinding of the material more continuous and avoiding batch differences caused by material transfer and multiple loading during the grinding process.

[0034] It should be noted that the first grinding unit 9 and the second grinding unit 10 are two independent units, and the structures of the two units are similar. That is, the grinding cylinder 2 and the scraper 6 are respectively provided in two sets, and they act on the two grinding units respectively.

[0035] In another embodiment of the present invention, a first transmission ring 11 is rotatably disposed on the body 1, and the first transmission ring 11 is connected to the rotor 3 in a non-rotational manner. The scraper 6 is fixed to the first transmission ring 11, and a power component for driving the first transmission ring 11 to move axially is also included. Specifically, a rotating hole is provided on the side wall of the machine body 1. The first transmission ring 11 is dynamically sealed to the rotating hole. Both scraper blades 6 are fixed to the end face of the first transmission ring 11 in a non-rotational manner. That is, a limiting structure such as a limit bar is provided between the first transmission ring 11 and the rotor 3 so that the rotor 3 can drive the first transmission ring 11 to rotate synchronously when it rotates. The purpose of this setting is that when cleaning foreign objects on the outer circumference of the separator 4, the rotor 3 will drive the first transmission ring 11 to rotate, thereby driving the scraper blades 6 to rotate along the outer circumference of the separator 4. During the rotation, the first transmission ring 11 and the scraper blades 6 are controlled to reciprocate through the power component. That is, when the scraper blades 6 move to the right, more material will enter the space between the mounting groove 5 and the separator 4. When the scraper blades 6 and the first transmission ring 11 move to the left, the scraper blades 6 and the first transmission ring 11 will exert a pushing force on the material, thereby assisting the foreign objects to enter the transfer channel 7.

[0036] Preferably, the power assembly includes a transmission rod 12 disposed on the first transmission ring 11, and the body 1 has a transmission groove 13 adapted to the transmission rod 12. Specifically, the transmission rod 12 is preferably a cylindrical rod, and there are two of them. The two transmission rods 12 are symmetrically arranged about the first transmission ring 11. The transmission groove 13 is wave-shaped or square wave (the connecting section between the crest and trough of the square wave is arranged obliquely) and is opened on the inner circumferential surface of the rotating hole. The crest and trough are arranged horizontally, with the right side being the crest and the left side being the trough. The purpose of this arrangement is that when the rotor 3 drives the first transmission ring 11 to rotate, it will drive the transmission rod 12 to slide along the inside of the transmission groove 13. When the transmission rod 12 slides from the trough to the crest, it will drive the first transmission ring 11 and the scraper 6 to move to the right. When the transmission rod 12 slides from the crest to the trough, it will drive the first transmission ring 11 and the scraper 6 to move to the left, thus realizing the axial reciprocating movement of the first transmission ring 11 and the scraper 6.

[0037] It should be noted that when the rotor 3 rotates at a slower speed, the centrifugal force on the material inside the grinding cylinder 2 is smaller, which will increase the amount of material near the outer circumference of the rotor 3, making it easier for foreign objects to enter the transfer channel 7 and causing the foreign objects to flow back. Furthermore, a second transmission ring 14 is provided inside the rotor 3. The second transmission ring 14 is fixedly connected to the scraper 6. A first sealing member 15 is provided on the second transmission ring 14. The first sealing member 15 has a first position to block the transfer channel 7 and a second position to open the transfer channel 7. Specifically, there should be no fewer than two first sealing members 15. The second transmission ring 14 is located at the end of the scraper 6 away from the first transmission ring 11, and the inner circumferential surface of the second transmission ring 14 is fixedly connected to the outer circumferential surface of the scraper 6. The first sealing member 15 is an arc-shaped plate structure set on the end face of the second transmission ring 14, and its interior has a through hole 16 adapted to the transfer channel 7. The first position of the first sealing member 15, that is, the solid part of the first sealing member 15, coincides with the transfer channel 7 to block the transfer channel 7. The second position of the first sealing member 15, that is, the position of the through hole 16 of the first sealing member 15, coincides with the transfer channel 7 to open the transfer channel 7. Under the action of the first sealing member 15, the scraper 6 and the rotor 3 can rotate synchronously. The purpose of this arrangement is that when the scraper 6 is at the rightmost end, its first sealing member 15 is at the first... In the second position, the transfer channel 7 is blocked, so foreign objects near the outer circumference of the rotor 3 will not enter the transfer channel 7. When the scraper 6 moves from right to left, it will drive the second transmission ring 14 and the first sealing member 15 to move to the left, thereby continuously squeezing the foreign objects near the outer circumference of the separator 4, so that the first sealing member 15 switches from the first position to the second position. At this time, the transfer channel 7 is opened, and under the squeezing action of the scraper 6, the foreign objects can be quickly pushed out through the transfer channel 7 to realize the transfer of foreign objects. When the scraper 6 moves from left to right, it will drive the second transmission ring 14 and the first sealing member 15 to move to the right, so that the first sealing member 15 switches from the second position to the first position. In this way, the first sealing member 15 is passively switched between the first position and the second position, thus avoiding the backflow of foreign objects on the outer circumference of the rotor 3 as much as possible.

[0038] It should be noted that during the material grinding process, the temperature inside the grinding cylinder 2 will rise due to friction, impact and shearing, which can easily cause the material to denature. Furthermore, the machine body 1 is provided with a cooling module for cooling the material inside the grinding cylinder 2. The cooling module includes a shell 17 sleeved on the outside of the grinding cylinder 2. The shell 17 is provided with a coolant inlet 18 and a coolant outlet 19, and also includes a liquid supply component (not shown) connected to the coolant inlet 18. Specifically, the housing 17 is fitted outside the grinding cylinder 2, and there is an annular space 20 between the housing 17 and the grinding cylinder 2 to accommodate coolant. The coolant inlet 18 is located below the housing 17, and the coolant outlet 19 is located above the housing 17. The liquid supply assembly can be a combination of a delivery pump and a pipeline. The purpose of this arrangement is that during the grinding process of the material, coolant is supplied to the annular space 20 through the liquid supply assembly and the coolant inlet 18. The cooled liquid is discharged from the coolant outlet 19 above, thus realizing the circulation of coolant to cool the material inside the grinding cylinder 2, thereby minimizing the denaturation of the material.

[0039] Furthermore, a temperature sensor (not shown) is installed inside the grinding cylinder 2, and the temperature sensor is electrically connected to the liquid supply assembly. Specifically, the temperature sensor is used to measure the temperature inside the grinding cylinder 2. When the temperature sensor detects a high temperature inside the grinding cylinder 2, the power of the liquid supply assembly is increased to provide more coolant to the annular space 20, thereby improving the cooling effect. Conversely, when the temperature sensor detects a low temperature inside the grinding cylinder 2, the power of the liquid supply assembly is reduced to provide less coolant to the annular space 20. In this way, the coolant supply rate can be dynamically adjusted according to the temperature inside the grinding cylinder 2.

[0040] It should be noted that when more coolant is supplied to the interior of the annular space 20, the pressure inside the annular space 20 is easily increased due to the limited discharge capacity of the coolant outlet 19. To solve the above problem, as another embodiment of the present invention, a spare channel 21 is provided on the housing 17, and a second sealing member 22 is slidably provided on the body 1. The second sealing member 22 has a third position for blocking the spare channel 21 and a fourth position for opening the spare channel 21. Specifically, the size of the backup channel 21 is smaller than that of the coolant outlet 19. It is located on the top of the housing 17 and on the right side. An movable groove 23 is provided inside the side wall of the housing 1. The second sealing member 22 includes an annular part 2201 and an L-shaped part 2202 fixed to the annular part 2201. It can slide horizontally along the inside of the movable groove 23. The backup channel 21 is located on the movement stroke of the L-shaped part 2202. The third position is when the L-shaped part 2202 coincides with the backup channel 21, and the fourth position is when the L-shaped part 2202 is far away from the backup channel 21. The purpose of this arrangement is that when the cooling module is cooling normally, the second sealing member 22 is in the third position, and the coolant can be discharged through the coolant outlet 19. When the liquid supply component provides more coolant into the annular space 20, the second sealing member 22 is controlled to switch from the third position to the fourth position, so that the backup channel 21 can be opened to assist in the discharge of coolant.

[0041] Furthermore, a first spring 24 is provided between the second sealing member 22 and the body 1. Specifically, there are multiple first springs 24, which are arranged in a circular array on the annular portion 2201. One end of each spring is fixed to the annular portion 2201, and the other end is fixed to the inner wall of the movable groove 23. The elastic force of the first springs 24 causes the second sealing member 22 to be in a third position to block the spare channel 21.

[0042] Furthermore, a sliding seat 25 is slidably disposed on the first transmission ring 11, a transmission member 26 is slidably disposed inside the sliding seat 25, a second spring 27 is disposed between the transmission member 26 and the sliding seat 25, an inclined surface 28 is disposed on the second sealing member 22, and the transmission member 26 has a first state of being away from the inclined surface 28 and a second state of being in contact with the inclined surface 28. Specifically, there are two sliding seats 25 and two transmission components 26, symmetrically arranged about the first transmission ring 11. A groove is formed on the outer circumferential surface of the first transmission ring 11. The sliding seat 25 is slidably connected to the groove. The sliding seat 25 is arranged along the radial direction of the grinding cylinder 2. The transmission component 26 is slidably connected to the sliding seat 25. The structure between them is approximately that of a telescopic rod. The transmission component 26 is preferably made of a high-density metal material. The elastic force of the second spring 27 causes the transmission component 26 to tend to retract into the sliding seat 25. The inclined surface 28 is located at the inner edge of the annular portion 2201. The purpose of this arrangement is that when the rotor 3 rotates at normal speed, the transmission component 26 is in the first state. When there is too much material inside the grinding cylinder 2, the rotational speed of the rotor 3 will increase, thereby raising the temperature inside the grinding cylinder 2. This will cause the liquid supply assembly to provide more coolant to the annular space 20. During this process, the rotational speed of the rotor 3 increases, thereby... As the rotational speed of the first transmission ring 11 and the sliding seat 25 increases, the centrifugal force on the transmission component 26 increases. When the centrifugal force on the transmission component 26 is greater than the sum of the spring forces of the second spring 27 and the first spring 24, the transmission component 26 will slide outwards towards the sliding seat 25. During this process, the end of the transmission component 26 will abut against the inclined surface 28 of the annular portion 2201, causing the second sealing component 22 to move to the right, switching the second sealing component 22 from the third position to the fourth position, and storing force on the first spring 24 and the second spring 27. At this time, the spare channel 21 opens to assist in the discharge of coolant. As the rotational speed of the rotor 3 gradually decreases, the centrifugal force on the transmission component 26 gradually decreases. At this time, the spring force of the second spring 27 is released to drive the transmission component 26 to slide inwards towards the sliding seat 25 for reset. The spring force of the first spring 24 is released to drive the second sealing component 22 to slide to the left for reset, in preparation for the next discharge of coolant.

[0043] In another embodiment of the present invention, an impact part 29 is provided on the sliding seat 25, and a float 30 is slidably disposed on the body 1, the float 30 being located on the movement stroke of the impact part 29. Specifically, the impact part 29 is disposed on the outer peripheral surface of the sliding seat 25, and the float 30 is L-shaped, including a horizontal section and a vertical section. The end of the horizontal section is placed in the annular space 20, and the float 30 can be a hollow structure with a density less than that of the coolant. The bottom end of the vertical section is arc-shaped. The purpose of this arrangement is that when the sand mill performs grinding operations, it will drive the rotor 3 to rotate. When the annular space 20 is normally circulated with coolant, the coolant will fill the annular space 20. At this time, under the action of buoyancy, the float 30 will move upward, thereby causing the impact part 29 to move upward. When the bottom end of the vertical section is far away from the impact part 29, the impact part 29 will not collide with the bottom end of the float 30 during the subsequent rotation stroke of the sliding seat 25, thus preventing any abnormal noise. If no coolant is introduced into the annular space 20, the float 30 will be at its lowest point under its own weight. At this time, the bottom end of the vertical section will be located on the movement stroke of the impact part 29. During the rotation of the impact part 29, it will collide with the vertical section to produce an abnormal noise. This sound is used to remind the staff that the coolant supply component has been forgotten to be started and needs to be turned on.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, 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 foregoing 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. A nano-grinding mill integrating coarse and fine grinding, comprising a machine body and a grinding cylinder disposed on the machine body, wherein a rotor is rotatably disposed inside the grinding cylinder, characterized in that, The grinding cylinder has a separator inside, the rotor has an installation groove, the installation groove has a spiral scraper inside, the scraper is in contact with the outer circumferential surface of the separator, the rotor has a transfer channel, one end of the transfer channel is connected to the inside of the installation groove, and the other end is connected to the grinding area inside the grinding cylinder.

2. The integrated coarse and fine grinding nano-sand mill according to claim 1, characterized in that, The machine body is provided with a first grinding unit and a second grinding unit, and the discharge end of the first grinding unit is connected to the feed end of the second grinding unit.

3. The integrated coarse and fine grinding nano-sand mill according to claim 1, characterized in that, The machine body is rotatably provided with a first transmission ring, and the first transmission ring is connected to the rotor in a non-rotational manner. The scraper is fixed to the first transmission ring, and the machine body also includes a power component for driving the first transmission ring to move axially.

4. The integrated coarse and fine grinding nano-sand mill according to claim 3, characterized in that, The power assembly includes a transmission rod disposed on the first transmission ring, and the machine body has a transmission groove adapted to the transmission rod.

5. The integrated coarse and fine grinding nano-sand mill according to claim 1, characterized in that, The rotor is provided with a second transmission ring, which is fixedly connected to the scraper. The second transmission ring is provided with a first sealing member, which has a first position for blocking the transfer channel and a second position for opening the transfer channel.

6. The integrated coarse and fine grinding nano-sand mill according to claim 3, characterized in that, The machine body is provided with a cooling module for cooling the material inside the grinding cylinder. The cooling module includes a shell sleeved on the outside of the grinding cylinder, a coolant inlet and a coolant outlet on the shell, and a liquid supply component connected to the coolant inlet.

7. The integrated coarse and fine grinding nano-sand mill according to claim 6, characterized in that, A temperature sensor is installed inside the grinding cylinder, and the temperature sensor is electrically connected to the liquid supply assembly.

8. A nano-grinding mill integrating coarse and fine grinding according to claim 6, characterized in that, The housing is provided with a spare channel, and a second sealing member is slidably disposed on the body. The second sealing member has a third position for blocking the spare channel and a fourth position for opening the spare channel.

9. A coarse and fine grinding integrated nano-sand mill according to claim 8, characterized in that, A first spring is provided between the second sealing component and the machine body.

10. A coarse and fine grinding integrated nano-sand mill according to claim 8, characterized in that, A sliding seat is slidably disposed on the first transmission ring, and a transmission component is slidably disposed inside the sliding seat. A second spring is disposed between the transmission component and the sliding seat. An inclined surface is disposed on the second sealing component. The transmission component has a first state of being away from the inclined surface and a second state of being in contact with the inclined surface.

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