Double disc nano-grinding machine

Abstract

The present invention relates to the field of agricultural product grinding and pulverizing equipment, and specifically discloses a double-disc nano-level grinder, comprising a pulverizing box, at least two upper pulverizing cutters being arranged in the pulverizing box, a pulverizing plate being fixed on the inner wall of the pulverizing box and being in gap fit with the upper pulverizing cutters, a plurality of cutter grooves being provided on the upper pulverizing cutters, a lower pulverizing cutter being further provided in the pulverizing box and being located below the upper pulverizing cutters, two lower pulverizing cutters being provided and being mirror-symmetrical to each other, a plurality of annularly arranged cutter teeth being fixed on the surface of the lower pulverizing cutter, tearing air grooves being provided on the cutter teeth, and return air grooves being provided between adjacent cutter teeth; the present invention enables the lower pulverizing cutter to rotate at high speed to generate a large amount of air vortexes, so that the materials are subjected to mutual collision and tearing and shearing and grinding on the cutter teeth under the dual action of the air vortexes and centrifugal force, thereby realizing ultrafine pulverization of the materials, achieving high working efficiency and meeting the standards of nano materials.

Description

Technical Field

[0001] The invention relates to the field of agricultural product grinding and crushing equipment, in particular to a double-disc nanometer grinder. Background Art

[0002] Nanomaterials are also called ultrafine crystal materials. The particle size of their clusters ranges from 1nm to 100nm. After agricultural products such as beans and rice are crushed into nano-scale particles, the human body can fully absorb the nutrients in them.

[0003] Currently, the equipment used to process agricultural products into nanoparticles is usually a grinder. Most current grinders use a single blade, which has low efficiency and uneven distribution of contact points between the blade and the grinding material, resulting in the presence of larger particles in the ground product.

[0004] The technical problem to be solved by this application is: how to improve the efficiency of grinding agricultural products and grind them thoroughly. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention aims to provide a high-efficiency, low-particle-size double-disc nano-grinding machine.

[0006] The technical solution adopted by the present invention is: a double-disc nano-scale grinder, including a crushing box, at least two upper crushing tools are provided in the crushing box, a crushing plate that is gap-matched with the upper crushing tools is fixed to the inner wall of the crushing box, the upper crushing tool has multiple tool grooves, and the crushing box is also provided with a lower crushing tool located below the upper crushing tool, there are two lower crushing tools and the two are mirror-symmetrical, a plurality of annularly arranged blade teeth are fixed on the surface of the lower crushing tool, the blade teeth have tearing air grooves, and return air grooves are provided between adjacent blade teeth.

[0007] The surface of the crushing plate is rough and has extremely strong friction. When the upper crushing tool rotates at high speed, the material first collides with the upper crushing tool and then collides with the crushing plate, breaking it up and then falling between the two lower crushing tools. The lower crushing tools rotate at high speed, and the return air slot forms a whirlwind vortex between the two lower crushing tools, causing the material to float in it, while the tearing air slot forms a tearing return air circle. When the knife teeth hit the material, the tearing air slot causes the material particles to collide with each other, grinding the material thoroughly until it reaches the nano material level.

[0008] In some embodiments, a cover plate is fixed on the top of the crushing box, a feed port is provided on the top of the cover plate, and an upper guide plate is fixed on the bottom of the cover plate, which is directly opposite to the feed port and is arranged obliquely. Each upper guide plate is respectively directed to the gap between the upper crushing tool and the crushing plate closest to it; the inclined setting of the upper guide plate allows the material entering the feed port to pass through the guidance of the upper guide plate and reach between the upper crushing tool and the crushing plate.

[0009] In some embodiments, a chassis is fixed on the top of the cover plate, an upper crushing motor is provided on the top of the chassis, a transmission shaft is fixed to the bottom of the upper crushing motor, a knife holder is fixed to the outside of each upper crushing tool, and a connecting piece for installing multiple knife holders together is fixed to the bottom of the transmission shaft; the upper crushing motor drives the transmission shaft, the connecting piece, the knife holder and the upper crushing tool to rotate in turn.

[0010] In some embodiments, a fan base is fixed to the bottom of the cover plate, a fan is installed on the top of the fan base, and the air outlet of the fan is directed toward the upper crushing tool; the fan blows the material falling from the feed port toward the crushing plate.

[0011] In some embodiments, a limiter is provided on the surface of the upper crushing tool, and the upper crushing tool is fixedly mounted on the tool holder through the limiter; the limiter is clamped in the tool holder and the upper crushing tool and the tool holder are also mounted through screws.

[0012] In some embodiments, a lower guide plate is fixed to the inner wall of the crushing box, and the lower guide plate faces between the two lower crushing cutters. The lower crushing cutters are fixed with a lower crushing motor, and the lower crushing cutters are provided with multiple mounting slots for connecting to the lower crushing motor. The setting of the lower guide plate can guide the material accurately into between the two lower crushing cutters.

[0013] In some embodiments, an inner box is fixed inside the crushing box, and a circulating oil pipe connected to the lower crushing motor is provided inside the inner box, and an oil inlet and an oil outlet are provided at both ends of the circulating oil pipe in sequence; cooling oil circulates in the circulating oil pipe to cool the lower crushing motor.

[0014] In some embodiments, a discharge port is provided outside the crushing box, and an exhaust device is connected to the discharge port; the exhaust device extracts the ground material between the two lower crushing cutters.

[0015] The present invention has the following technical effects: the high-speed rotation of the lower crushing cutter generates a large amount of air vortex, so that the material collides and tears with each other and is sheared and ground on the cutter teeth under the dual action of the air vortex and centrifugal force, thereby achieving ultra-fine crushing of the material, with high work efficiency and meeting the standards of nano materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the entire machine of the present invention;

[0017] Figure 2 This is a left-side structural schematic diagram of the upper crushing tool of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the lower crushing cutter of the present invention when viewed from above.

[0019] In the figure: 1. Chassis; 2. Cover; 3. Upper guide plate; 4. Crushing box; 5. Crushing plate; 6. Fan seat; 7. Inner box; 8. Circulating oil pipe; 9. Lower crushing tool; 10. Discharge port; 11. Upper crushing motor; 12. Drive shaft; 13. Feed port; 14. Fan; 15. Tool holder; 16. Upper crushing tool; 17. Connector; 18. Oil inlet; 19. Oil outlet; 20. Lower crushing motor; 21. Lower guide plate; 22. Knife groove; 23. Limiting piece; 24. Knife teeth; 25. Mounting slot; 26. Tearing air slot; 27. Return air slot. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 3 The present invention provides a technical solution: a double-disc nano-grinding machine, comprising a chassis 1, an upper crushing motor 11 is fixed on the top of the chassis 1, a transmission shaft 12 is fixedly installed on the output end of the bottom of the upper crushing motor 11, a connecting member 17 is fixed on the bottom of the transmission shaft 12, two knife seats 15 are fixed on the outer side of the connecting member 17, an upper crushing tool 16 is fixed on each knife seat 15, seven knife grooves 22 are opened on the surface of the upper crushing tool 16, a limiting member 23 is provided at the bottom of the upper crushing tool 16, the limiting member 23 is clamped in the knife seat 15 and the upper crushing tool 16 is provided with a limiting member 23. The crushing tool 16 is also connected to the tool holder 15 by screws. A cover plate 2 is installed at the bottom of the chassis 1. Feed ports 13 are provided on the top of both sides of the cover plate 2. Upper guide plates 3 are fixed to the bottom of both sides of the cover plate 2. The upper guide plates 3 are grid plates. The parts of the upper guide plates 3 close to the chassis 1 are higher than the parts close to the upper crushing tool 16. A crushing box 4 is fixed to the bottom of the cover plate 2. A crushing plate 5 corresponding to the upper crushing tool 16 is fixed inside the crushing box 4. A fan base 6 is also fixed to the bottom of the cover plate 2 through a hanging column. Two fans 14 are provided on the fan base 6.

[0022] An inner box 7 is also installed in the crushing box 4. The inner walls of the inner box 7 and the inner walls of the crushing box 4 are respectively embedded with lower crushing motors 20 with output shafts pointing downward and upward. The output ends of the two lower crushing motors 20 are fixed with lower crushing tools 9. The spacing between the two lower crushing tools 9 is 40cm to 50cm. Two lower guide plates 21 are also fixed on the inner wall of the crushing box 4, which are lower as they get closer to the lower crushing tools 9. A circulating oil pipe 8 is also provided inside the inner box 7. An oil inlet 18 and an oil outlet 19 are respectively provided at both ends of the circulating oil pipe 8. The cooling oil flowing in the circulating oil pipe 8 cools the two lower crushing motors 20 respectively. The lower crushing tool 9 is provided with eleven teeth 24. Each tooth 24 is provided with two mounting grooves 25 and a tearing air groove 26 located between the two mounting grooves 25. A return air groove 27 is also provided between two adjacent teeth 24. A discharge port 10 is installed at one end of the crushing box 4, and an exhaust device is sealed at the discharge port 10.

[0023] The working principle of the present invention is as follows: agricultural products are put into the feed port 13, pass through the upper guide plate 3 and enter between the crushing plate 5 and the upper crushing tool 16, the upper crushing motor 11 drives the upper crushing tool 16 to rotate at a high speed of 5000 / s, the material collides with the upper crushing tool 16 and the crushing plate 5, breaking it up and scattering it, and then the material falls to the lower guide plate 21, passes through the lower guide plate 21 and falls between the two lower crushing tools 9, the lower crushing motor 20 drives the lower crushing tool 9 to rotate at a high speed of 8000 rpm, the return air slot 27 forms a cyclone vortex between the two lower crushing tools 9, causing the material to float in it, and the tearing air slot 26 forms a tearing return air circle, the blade 24 hits the material while the tearing air slot 26 causes the material particles to collide with each other, grinding the material thoroughly until it reaches the nano material level, and the ground material powder is sucked away by the exhaust equipment.

[0024] Table 1 shows the particle size test information of rice, soybeans, wheat, millet and Tongkat Ali materials after being crushed by the present invention, which was commissioned by the Resource Microbiology Laboratory of Jilin University on September 20, 2019. Table 2 shows the test results:

[0025] Sample name Testing instruments Test items dispersants Loading concentration Detection temperature Number of repetitions rice Zetasizer-NanoZS90 Particle size water 0.01g / ml 25℃ 3 soy Zetasizer-NanoZS90 Particle size water 0.01g / ml 25℃ 3 wheat Zetasizer-NanoZS90 Particle size water 0.01g / ml 25℃ 3 Millet Zetasizer-NanoZS90 Particle size water 0.01g / ml 25℃ 3 Tongkat Ali Zetasizer-NanoZS90 Particle size water 0.01g / ml 25℃ 3

[0026] Table 1

[0027]

[0028]

[0029] Table 2

[0030] It can be seen from Table 1 and Table 2 that although the particle sizes of the above five materials are different, they all meet the particle size requirements of nanomaterials.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features therein. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A double-disc nano-grinding machine, comprising a grinding box (4), characterized in that: At least two upper crushing knives (16) are provided in the crushing box (4), a crushing plate (5) that is loosely matched with the upper crushing knives (16) is fixed on the inner wall of the crushing box (4), the upper crushing knives (16) are provided with a plurality of knife grooves (22), the crushing box (4) is further provided with a lower crushing knife (9) located below the upper crushing knife (16), two lower crushing knives (9) are provided and the two are mirror-symmetrical, a plurality of annularly arranged knife teeth (24) are fixed on the surface of the lower crushing knife (9), the knife teeth (24) are provided with tearing air grooves (26), and a return air groove (27) is provided between adjacent knife teeth (24).

2. The double-disc nano-level grinding machine according to claim 1, characterized in that: A cover plate (2) is fixed on the top of the crushing box (4), a feed port (13) is provided on the top of the cover plate (2), and an upper guide plate (3) is fixed on the bottom of the cover plate (2) and is arranged obliquely below the feed port (13), and each of the upper guide plates (3) is respectively directed towards the gap between the upper crushing cutter (16) and the crushing plate (5) closest to it.

3. The double-disc nano-level grinding machine according to claim 2, characterized in that: A chassis (1) is fixed on the top of the cover plate (2), an upper crushing motor (11) is provided on the top of the chassis (1), a transmission shaft (12) is fixed on the bottom of the upper crushing motor (11), a knife seat (15) is fixed on the outside of each upper crushing cutter (16), and a connecting piece (17) for mounting multiple knife seats (15) together is fixed on the bottom of the transmission shaft (12).

4. The double-disc nano-level grinding machine according to claim 2, characterized in that: A fan base (6) is also fixed to the bottom of the cover plate (2), and a fan (14) is installed on the top of the fan base (6), with the air outlet of the fan (14) facing the upper crushing cutter (16).

5. The double-disc nano-level grinding machine according to claim 3, characterized in that: A limiting piece (23) is provided on the surface of the upper crushing tool (16), and the upper crushing tool (16) is fixedly mounted on the tool holder (15) via the limiting piece (23).

6. The double-disc nano-level grinding machine according to claim 1, characterized in that: The inner wall of the crushing box (4) is also fixed with an inclined lower guide plate (21), the lower guide plate (21) facing between the two lower crushing cutters (9), the lower crushing cutters (9) are fixed with a lower crushing motor (20), and the lower crushing cutters (9) are provided with a plurality of mounting slots (25) for connecting to the lower crushing motor (20).

7. The double-disc nano-level grinding machine according to claim 1, characterized in that: An inner box (7) is fixed in the crushing box (4), and a circulating oil pipe (8) communicating with a lower crushing motor (20) is provided inside the inner box (7). An oil inlet (18) and an oil outlet (19) are provided at both ends of the circulating oil pipe (8).

8. The double-disc nano-level grinding machine according to claim 1, characterized in that: The crushing box (4) is provided with a discharge port (10) outside, and the discharge port (10) is connected to an exhaust device outside.

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