A milling device for deep processing of cereals

Abstract

The application discloses a kind of milling devices for grain deep processing, belong to the technical field of grain deep processing, to solve the technical problem that traditional milling device needs artificial re-milling, reduces the technical problem of milling efficiency.The milling device of the application includes base, milling barrel assembly, milling mechanism, discharge mechanism and driving mechanism;Milling barrel assembly includes outer cylinder, front end cover and rear end cover, milling mechanism includes first sealing plate, second sealing plate, bearing cylinder, coarse milling roller, fine milling roller and fine milling roller, coarse milling roller, fine milling roller and fine milling roller are all installed on bearing cylinder, the inner wall of outer cylinder is fixed with milling barrel, the outer part of bearing cylinder is sleeved with milling barrel, the spacing between coarse milling roller, fine milling roller and fine milling roller and the inner wall of milling barrel gradually decreases;Bearing cylinder is provided with a plurality of sieve holes, and grains enter the discharge mechanism through the sieve holes, and the driving mechanism and the first sealing plate are drivingly connected.The milling device of the application is used for milling processing of grain particles.

Description

Technical Field

[0001] This invention belongs to the field of grain deep processing technology, and specifically relates to a grinding device for grain deep processing. Background Technology

[0002] Grain milling is a key process for transforming grain raw materials into fine powder or granular products, and it is widely used in food, feed, and industrial fields. Currently, common whole grain health powders on the market require milling equipment to produce powdered food. Because they are not puffed and do not contain instant solvents or preservatives, they retain the nutritional components of the raw materials to the greatest extent, offering various health benefits and methods of consumption.

[0003] Traditional grain milling equipment includes a processing box containing a grinding plate and a striking mechanism. The grinding plate has several sieve holes. Grain is piled on the grinding plate, and the striking mechanism is used to strike the grinding plate, causing any grain blockages to dislodge and prevent sieve clogging, thus improving screening efficiency. However, traditional milling equipment requires the grain powder from previous milling processes to be re-grinded to ensure the powder meets requirements. This not only increases milling time and reduces efficiency but also requires manual repetitive feeding, making automated milling impossible. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a grinding apparatus for deep processing of grains. The technical problem to be solved by this invention is achieved through the following technical solution:

[0005] In a first aspect, the present invention provides a grinding device for deep processing of grains, including a base, a grinding cylinder assembly, a grinding mechanism, a discharge mechanism, and a drive mechanism;

[0006] The grinding cylinder assembly includes an outer cylinder, a front end cover, and a rear end cover. The front end cover and the rear end cover are respectively fixed on the axial sides of the outer cylinder. The outer cylinder is fixed on the base and has a feeding port.

[0007] The grinding mechanism is located inside the outer cylinder. The grinding mechanism includes a first sealing plate, a second sealing plate, a bearing cylinder, a coarse grinding roller, a fine grinding roller, and a fine grinding roller. The first sealing plate and the second sealing plate are respectively fixed on the axial sides of the outer cylinder. The coarse grinding roller, the fine grinding roller, and the fine grinding roller are all installed on the bearing cylinder and are distributed sequentially along the circumference of the bearing cylinder. A grinding cylinder is fixed on the inner wall of the outer cylinder and is sleeved on the outside of the bearing cylinder. The distance between the coarse grinding roller, the fine grinding roller, and the fine grinding roller and the inner wall of the grinding cylinder gradually decreases.

[0008] The discharge mechanism is located inside the bearing cylinder, which has multiple sieve holes. Grains enter the discharge mechanism through the sieve holes.

[0009] The drive mechanism is fixed on the base and is connected to the first sealing plate to drive the first sealing plate to rotate. When the first sealing plate rotates, it drives the bearing cylinder to rotate.

[0010] In one embodiment of the present invention, a storage groove is provided on the outer peripheral surface of the bearing cylinder, the screen hole is located in the storage groove, and the grinding mechanism further includes a long crushing wheel, a first gear and a bearing ring. The two ends of the long crushing wheel are rotatably connected to the first sealing plate and the second sealing plate respectively, and the long crushing wheel is located in the storage groove.

[0011] The bearing ring is fixed to the inner wall of the rear end cover. One end of the long crushing wheel extends through the second sealing plate to form an extension. The first gear is fixedly connected to the extension. The first gear is coaxially arranged with the long crushing wheel. The bearing ring is coaxially arranged with the bearing cylinder. The outer circumferential surface of the bearing ring is provided with a first toothed ring. The first gear meshes with the first toothed ring.

[0012] When the first sealing plate rotates clockwise, it drives the long crushing wheel to rotate clockwise around the axis of the bearing cylinder. Through the cooperation of the first gear and the first gear ring, it drives the long crushing wheel to rotate clockwise around its own axis, thereby agitating the grains in the storage groove.

[0013] In one embodiment of the present invention, the bearing cylinder includes three arc-shaped plates evenly distributed along its circumference, each arc-shaped plate being recessed toward the axis of the bearing cylinder to form a material storage groove, and adjacent arc-shaped plates being connected by two connecting rods.

[0014] There is an installation slot between any two adjacent arc-shaped plates. The bearing cylinder has three installation slots, and the coarse grinding roller, fine grinding roller and micro grinding roller are respectively set in the three installation slots.

[0015] In one embodiment of the present invention, the bearing cylinder is further provided with three arc-shaped partitions arranged sequentially along its circumference. The arc-shaped partitions are concave towards the axis of the bearing cylinder. The coarse grinding roller, fine grinding roller and fine grinding roller are respectively arranged in the grooves of the three arc-shaped partitions, and there is a first heat dissipation channel between the coarse grinding roller, fine grinding roller and fine grinding roller and the arc-shaped partition.

[0016] The grinding device also includes a heat dissipation and ventilation assembly, which includes a protective cover, a gearbox, a fan blade, and a second gear. The protective cover is fixed to the outer surface of the second sealing plate, the gearbox is fixed to the inner wall of the protective cover, the output end of the gearbox is fixedly connected to the fan blade, the input end of the gearbox extends through the protective cover and is connected to the second gear, and a second toothed ring is provided on the inner circumferential surface of the bearing ring, and the second gear meshes with the second toothed ring.

[0017] In one embodiment of the present invention, the second sealing plate is provided with three arc-shaped air inlets, the three arc-shaped air inlets correspond one-to-one with the three first heat dissipation channels, the heat dissipation ventilation components are provided with three, the three heat dissipation ventilation components correspond one-to-one with the three arc-shaped air inlets, and the protective cover is provided with multiple air inlets.

[0018] The first sealing plate has three arc-shaped exhaust holes, which correspond one-to-one with three arc-shaped air inlets.

[0019] In one embodiment of the present invention, the discharge mechanism includes a heat-conducting conveying cylinder and a conveying assembly. The heat-conducting conveying cylinder is sleeved inside the bearing cylinder. The two ends of the heat-conducting conveying cylinder are fixedly connected to the first sealing plate and the second sealing plate, respectively. The conveying assembly is located inside the heat-conducting conveying cylinder and is rotatably connected to the heat-conducting conveying cylinder.

[0020] The outer circumferential surface of the bearing cylinder is provided with three material storage grooves, each of which is provided with a sieve hole. The outer circumferential surface of the heat-conducting conveying cylinder is provided with three material guide hoppers and three powder collection holes. The bottom of the three material guide hoppers corresponds to the three powder collection holes, and the top of the three material guide hoppers corresponds to the sieve holes of the three material storage grooves.

[0021] In one embodiment of the present invention, each powder collection hole is further provided with two baffles, one side of which is connected to the powder collection hole and the other side is inclined toward the inside of the heat-conducting conveying cylinder. The two baffles are symmetrically arranged and there is a gap between the two baffles to form a conical conveying cavity.

[0022] Grain powder is conveyed through the sieve holes to the guide hopper, then to the conical guide cavity, and finally to the conveying assembly inside the heat-conducting conveying cylinder.

[0023] In one embodiment of the present invention, an arc-shaped baffle is provided between any two adjacent guide hoppers. The two sides of the arc-shaped baffle are fixedly connected to the two adjacent guide hoppers respectively. There is a gap between the inner circumferential surface of the arc-shaped baffle and the outer circumferential surface of the heat-conducting conveying cylinder to form a second heat dissipation channel.

[0024] The first sealing plate is provided with three drying air inlets, and the second sealing plate is provided with three drying exhaust outlets. The three drying air inlets correspond one-to-one with one end of the three second heat dissipation channels, and the three drying exhaust outlets correspond one-to-one with the other end of the three second heat dissipation channels.

[0025] There is a heat conduction cavity between the front cover and the first sealing plate, and ventilation holes are provided on the rear cover.

[0026] In one embodiment of the present invention, the conveying assembly includes an auger, a rotary joint, a discharge pipe, and a motor. The auger is located inside the heat-conducting conveying cylinder. The rotary joint includes an inner tube and an outer tube that are rotatably connected. The inner tube is fixedly connected to the discharge pipe, and the outer tube is fixedly connected to the heat-conducting conveying cylinder. One end of the auger extends into the discharge pipe. The motor is drivenly connected to the auger to drive the auger to rotate and convey grain powder.

[0027] The conveying assembly also includes a third gear and a fourth gear that mesh with each other. One end of the auger extends through the discharge pipe and is connected to the third gear. The fourth gear is connected to the motor. The diameter of the third gear is smaller than the diameter of the fourth gear.

[0028] In one embodiment of the present invention, the driving mechanism includes a drive motor, a bearing housing, a transmission shaft, a first bearing seat and a second bearing seat, a first bracket and a second bracket are fixed on the base, the bearing housing is mounted on the first bracket, the first bearing seat is mounted on the second bracket, and the second bearing seat is mounted on the front end cover.

[0029] Bearings are provided in the bearing housing, the first bearing seat, and the second bearing seat. The drive shaft is inserted into the bearings in the bearing housing, the first bearing seat, and the second bearing seat in sequence. One end of the drive shaft is connected to the drive motor, and the other end is fixedly connected to the first sealing plate.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] In the above-described scheme of this application, the grinding device includes a base, a grinding cylinder assembly, a grinding mechanism, a discharge mechanism, and a driving mechanism; the grinding cylinder assembly includes an outer cylinder, a front end cover, and a rear end cover, the front end cover and the rear end cover being fixed to the axial sides of the outer cylinder respectively, the outer cylinder being fixed on the base, and a feeding port being provided on the outer cylinder; the grinding mechanism is disposed inside the outer cylinder, and the grinding mechanism includes a first sealing plate, a second sealing plate, a bearing cylinder, a coarse grinding roller, a fine grinding roller, and a micro grinding roller, the first sealing plate and the second sealing plate being fixed to the axial sides of the outer cylinder respectively, the coarse grinding roller, the fine grinding roller, and the micro grinding roller. Both the fine grinding roller and the micro-grinding roller are mounted on the bearing cylinder and are distributed sequentially along the circumference of the bearing cylinder. A grinding cylinder is fixed on the inner wall of the outer cylinder and is sleeved on the outside of the bearing cylinder. The distance between the coarse grinding roller, the fine grinding roller, and the micro-grinding roller and the inner wall of the grinding cylinder gradually decreases. The discharge mechanism is located inside the bearing cylinder. The bearing cylinder has multiple sieve holes, and the grain enters the discharge mechanism through the sieve holes. The drive mechanism is fixed on the base and is connected to the first sealing plate to drive the first sealing plate to rotate. When the first sealing plate rotates, it drives the bearing cylinder to rotate. This structure allows the coarse, fine, and micro-fine grinding rollers to work in conjunction with the grinding cylinder to grind grain particles. Through these three grinding stages, a progressive processing from coarse particles to fine powder can be automatically completed. The inner diameter of the sieve apertures precisely matches the finished particle size. Grain powder meeting the requirements passes through the sieve apertures and enters the discharge mechanism, while particles that do not meet the requirements continue to participate in the next stage of grinding. This achieves continuous operation from coarse grinding to screening and then to fine grinding. Compared to traditional segmented processing, the device described in this application reduces material transfer steps, shortens the processing cycle, and allows for multi-stage grinding with a single feed. Powder meeting the particle size requirements is immediately screened out, avoiding the repeated backfilling and re-grinding required in traditional processes, thus improving the processing accuracy of the finished powder. It also avoids energy waste caused by over-grinding and the loss of grain nutrients, ensuring the finished grain maintains a good edible taste. Furthermore, the device increases the automation level of grain grinding, reduces the frequency of manual intervention, and lowers the labor costs of grain grinding.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of the grinding device of the present invention. Figure 1 ;

[0034] Figure 2 This is a three-dimensional schematic diagram of the grinding device of the present invention. Figure 2 ;

[0035] Figure 3 This is a three-dimensional cross-section of the grinding device of the present invention. Figure 1 ;

[0036] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0037] Figure 5 for Figure 3 Enlarged schematic diagram of part B;

[0038] Figure 6 This is a three-dimensional cross-section of the grinding device of the present invention. Figure 2 ;

[0039] Figure 7 This is a three-dimensional cross-section of the grinding device of the present invention. Figure 3 ;

[0040] Figure 8 for Figure 7 An enlarged schematic diagram of section D in the middle;

[0041] Figure 9 This is a schematic diagram of the invention after removing the outer cylinder, grinding cylinder, front end cover, and rear end cover;

[0042] Figure 10 This is a schematic diagram of the grinding mechanism in this invention;

[0043] Figure 11 for Figure 6 An enlarged schematic diagram of section C;

[0044] Figure 12 This is a schematic diagram of the grinding mechanism in the disassembled state in this invention;

[0045] Figure 13 This is a schematic diagram of the bottom of the grinding mechanism in this invention;

[0046] Figure 14 This is a schematic diagram of the bearing cylinder in this invention;

[0047] Figure 15 This is a three-dimensional sectional view of the material discharge mechanism in this invention;

[0048] Figure 16 for Figure 15 An enlarged schematic diagram of section E in the middle.

[0049] Reference numerals: 1-Base, 2-Outer cylinder, 3-Front end cover, 4-Rear end cover, 5-Grinding cylinder, 6-Grinding mechanism, 61-First sealing plate, 62-Second sealing plate, 63-Bearing cylinder, 64-Storage groove, 65-Sieve area, 66-Installation slot, 67-Coarse grinding roller, 68-Fine grinding roller, 69-Micro grinding roller, 610-Arc-shaped partition, 611-Arc-shaped air inlet, 612-Arc-shaped exhaust outlet, 613-Protective cover, 614-Fan blade, 615-Second gear 616-Long crushing wheel, 617-First gear, 618-Bearing ring, 619-First gear ring, 620-Second gear ring, 7-Discharge mechanism, 71-Heat-conducting conveying cylinder, 72-Guide hopper, 73-Baffle plate, 74-Arc baffle, 75-Second heat dissipation channel, 76-Rotary joint, 77-Discharge pipe, 78-Auger, 79-Third gear, 710-Micro motor, 711-Fourth gear, 712-Drying exhaust port, 713-Drying air inlet, 8-Drive mechanism. Detailed Implementation

[0050] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0051] Please see Figures 1 to 16 This invention provides a grinding device for deep processing of grains, including a base 1, a grinding cylinder assembly, a grinding mechanism 6, a discharge mechanism 7, and a drive mechanism 8. The grinding cylinder assembly includes an outer cylinder 2, a front end cover 3, and a rear end cover 4. The front end cover 3 and the rear end cover 4 are respectively fixed to the axial sides of the outer cylinder 2. The outer cylinder 2 is fixed to the base 1 and has a feeding port. The grinding mechanism 6 is disposed inside the outer cylinder 2 and includes a first sealing plate 61, a second sealing plate 62, a bearing cylinder 63, a coarse grinding roller 67, a fine grinding roller 68, and a micro-grinding roller 69. The first sealing plate 61 and the second sealing plate 62 are respectively fixed to the axial sides of the outer cylinder 2. Grinding roller 67, fine grinding roller 68, and fine grinding roller 69 are all mounted on the bearing cylinder 63 and are distributed sequentially along the circumference of the bearing cylinder 63. A grinding cylinder 5 is fixed on the inner wall of the outer cylinder 2 and is sleeved on the outside of the bearing cylinder 63. The distance between the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 and the inner wall of the grinding cylinder 5 gradually decreases. The discharge mechanism 7 is located inside the bearing cylinder 63. The bearing cylinder 63 is provided with multiple sieve holes, and the grain enters the discharge mechanism 7 through the sieve holes. The drive mechanism 8 is fixed on the base 1 and is connected to the first sealing plate 61 to drive the first sealing plate 61 to rotate. When the first sealing plate 61 rotates, it drives the bearing cylinder 63 to rotate.

[0052] In some embodiments of this application, the base 1 includes a support platform, which consists of two horizontal bars and multiple vertical bars. The two horizontal bars are parallel to each other, and the two ends of the vertical bars are welded to the two horizontal bars respectively. The multiple vertical bars are parallel to each other. The outer cylinder 2 is detachably fixed to the support platform by bolts. The base 1 also includes four legs, which are respectively located at the four top corners of the support platform.

[0053] In some embodiments of this application, the feeding port is located at the center of the top of the outer cylinder 2, and a sealing cover is provided inside the feeding port. The sealing cover is detachably connected to the outer cylinder 2.

[0054] In some embodiments of this application, the front cover 3 and the outer cylinder 2 are detachably connected by bolts, the rear cover 4 and the outer cylinder 2 are detachably connected by bolts, and multiple ventilation openings are evenly provided on the outer wall of the rear cover 4.

[0055] In some embodiments of this application, the grinding cylinder 5 and the inner wall of the outer cylinder 2 are detachably connected by bolts. By replacing the grinding cylinder 5 with different thicknesses, the distance between the coarse grinding roller 67, the fine grinding roller 68 and the fine grinding roller 69 and the grinding cylinder 5 can be changed, thereby adjusting the grinding precision of the grain.

[0056] In some embodiments of this application, the support cylinder 63 is provided with a plurality of sieve holes, which can form a sieve hole area 65. The plurality of sieve holes can be distributed in a matrix.

[0057] In some embodiments of this application, the inner diameter of the sieve holes in the sieve hole area 65 is matched with the particle size of the finished grain powder.

[0058] In some embodiments of this application, the grinding mechanism 6 performs coarse grinding, fine grinding and micro grinding on the grain while rotating in a circular motion. The coarse grain particles after coarse grinding can automatically enter the fine grinding and micro grinding processes in sequence, and the grains that meet the grinding particle size requirements are automatically screened out.

[0059] In some embodiments of this application, the discharge mechanism 7 is used to temporarily store grains that meet the requirements of the grinding particle size, and to dry the grains that enter the discharge mechanism 7 using the heat generated during grinding before discharging them.

[0060] In the above-described scheme of this application, the grinding device includes a base 1, a grinding cylinder assembly, a grinding mechanism 6, a discharge mechanism 7, and a drive mechanism 8; the grinding cylinder assembly includes an outer cylinder 2, a front end cover 3, and a rear end cover 4, the front end cover 3 and the rear end cover 4 being fixed to the axial sides of the outer cylinder 2 respectively, the outer cylinder 2 being fixed to the base 1, and a feeding port being provided on the outer cylinder 2; the grinding mechanism 6 is disposed inside the outer cylinder 2, and the grinding mechanism 6 includes a first sealing plate 61, a second sealing plate 62, a bearing cylinder 63, a coarse grinding roller 67, a fine grinding roller 68, and a fine grinding roller 69, the first sealing plate 61 and the second sealing plate 62 being fixed to the axial sides of the outer cylinder 2 respectively, the coarse grinding roller 67, the fine grinding roller 68, the coarse grinding roller 69, the coarse grinding roller 67, the coarse grinding roller 68, the coarse grinding roller 69 ... Grinding roller 68 and fine grinding roller 69 are both mounted on the bearing cylinder 63 and are distributed sequentially along the circumference of the bearing cylinder 63. A grinding cylinder 5 is fixed on the inner wall of the outer cylinder 2 and is sleeved on the outside of the bearing cylinder 63. The distance between the coarse grinding roller 67, fine grinding roller 68 and fine grinding roller 69 and the inner wall of the grinding cylinder 5 gradually decreases. The discharge mechanism 7 is located inside the bearing cylinder 63. The bearing cylinder 63 is provided with multiple sieve holes, and the grain enters the discharge mechanism 7 through the sieve holes. The drive mechanism 8 is fixed on the base 1 and is connected to the first sealing plate 61 to drive the first sealing plate 61 to rotate. When the first sealing plate 61 rotates, it drives the bearing cylinder 63 to rotate. With this structure, the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 can work in conjunction with the grinding cylinder to grind grain particles. Through the three grinding processes of the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69, the progressive processing from coarse particles to fine powder can be automatically completed. The inner diameter of the sieve holes is precisely matched with the finished particle size. Grain powder that meets the requirements passes through the sieve holes and enters the discharge mechanism 7, while particles that do not meet the requirements continue to participate in the next stage of grinding, realizing continuous operation from coarse grinding to screening and then to fine grinding. Compared with traditional segmented processing, the device described in this application reduces material transfer links, shortens the processing cycle, and allows for multi-stage grinding processing with a single feeding. Powder that meets the particle size requirements is screened out immediately, avoiding the repeated backfilling and re-grinding required in traditional processes, and improving the processing accuracy of the finished powder. At the same time, it avoids energy waste caused by over-grinding and the loss of nutrients in the grain, ensuring that the ground grain product maintains a good taste. In addition, the above-mentioned device improves the automation of grain milling, reduces the frequency of manual intervention, and lowers the labor cost of grain milling.

[0061] In some embodiments of this application, a storage groove 64 is provided on the outer peripheral surface of the bearing cylinder 63, and the sieve hole is located in the storage groove 64. The grinding mechanism 6 also includes a long crushing wheel 616, a first gear 617, and a bearing ring 618. The two ends of the long crushing wheel 616 are rotatably connected to the first sealing plate 61 and the second sealing plate 62, respectively, and the long crushing wheel 616 is located in the storage groove 64. The bearing ring 618 is fixed to the inner wall of the rear end cover 4. One end of the long crushing wheel 616 extends through the second sealing plate 62 to form an extension. The first gear 617 and the extension... The structure is fixedly connected, with the first gear 617 coaxially arranged with the long crushing wheel 616, and the bearing ring 618 coaxially arranged with the bearing cylinder 63. A first toothed ring 619 is provided on the outer circumference of the bearing ring 618, and the first gear 617 meshes with the first toothed ring 619. When the first sealing plate 61 rotates clockwise, it drives the long crushing wheel 616 to rotate clockwise around the axis of the bearing cylinder 63. Through the cooperation of the first gear 617 and the first toothed ring 619, the long crushing wheel 616 rotates clockwise around its own axis, thus agitating the grains in the storage groove 64. With this structure, the storage groove 64 can store grains. When the drive mechanism 8 drives the first sealing plate 61 to rotate, the first sealing plate 61 can drive the bearing cylinder 63 to rotate synchronously, thereby driving the coarse grinding roller 67, fine grinding roller 68, and micro-grinding roller 69 to rotate around the axis of the bearing cylinder 63, achieving the grinding of grain particles. Furthermore, when the bearing cylinder 63 rotates, it drives the long crushing wheel 616 to rotate around the axis of the bearing cylinder 63. At this time, the first gear 617 can move on the first toothed ring 619 of the bearing ring 618 to drive the long crushing wheel 616 to rotate around its own axis. When the long crushing wheel 616 rotates, it can agitate the grains in the storage groove 64. In this way, the long crushing wheel 616 can be used to push the grain particles towards one side of the grinding roller, improving the grinding efficiency, and the long crushing wheel 616 can also be used to agitate the grain particles in the storage groove 64, making it easier for the grain powder between the grain particles to enter the sieve holes. In addition, when the rotation direction of the long crushing wheel 616 around its own axis is the same as the rotation direction of the bearing cylinder 63, the long crushing wheel 616 can push the grain particles towards the rear grinding roller during the rotation process.

[0062] In some embodiments of this application, three storage grooves 64 are evenly provided on the outer wall of the bearing cylinder 63. One storage groove 64 is located between the coarse grinding roller 67 and the fine grinding roller 68, another storage groove 64 is located between the fine grinding roller 68 and the fine grinding roller 69, and yet another storage groove 64 is located between the coarse grinding roller 67 and the fine grinding roller 69.

[0063] In some embodiments of this application, when the drive mechanism 8 is not activated, and the person stands in the position of the drive mechanism 8 facing the front cover 3, the coarse grinding roller 67 is located at the upper left, the fine grinding roller 68 at the lower, and the fine grinding roller 69 at the upper right. Thus, when the drive mechanism 8 drives the first sealing plate 61 to rotate clockwise, the coarse grinding roller 67 first rotates towards the feeding port to achieve coarse grinding of the grain particles. At this time, the long crushing wheel 616 located below the feeding port rotates clockwise, pushing the grain particles in the storage groove 64 towards the coarse grinding roller 67, improving the grinding efficiency and effect of the coarse grinding roller 67. Afterwards, the fine grinding roller 68 rotates towards the feeding port to achieve fine grinding of the grain particles. The long crushing wheel 616 on the front side of the fine grinding roller 68 rotates clockwise, pushing the grain particles in the storage groove 64 towards the fine grinding roller 68, improving the grinding efficiency and effect of the fine grinding roller 68. Finally, the fine grinding roller 69 rotates towards the feeding port to achieve fine grinding of the grain particles. The long crushing wheel 616 on the front side of the fine grinding roller 69 rotates clockwise, pushing the grain particles in the storage groove 64 toward the fine grinding roller 69, improving the grinding efficiency and grinding effect of the fine grinding roller 69. With this structure, through the coordinated cooperation of the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 with the three long crushing wheels 616, the grain particles can be ground sequentially, fully improving the grinding efficiency and effect.

[0064] It is understood that, through the coordinated operation of the bearing cylinder 63, coarse grinding roller 67, fine grinding roller 68, micro-grinding roller 69, long crushing wheel 616, first gear 617, and bearing ring 618, the drive mechanism 8 drives the bearing cylinder 63 to rotate clockwise. While the coarse grinding roller 67, fine grinding roller 68, and micro-grinding roller 69 grind the grain particles, the long crushing wheel 616 can be driven to rotate clockwise to move the grain in the storage groove 64, thereby improving the grinding efficiency and grinding effect of the grinding device.

[0065] In some embodiments of this application, such as Figure 6 , Figure 9 , Figure 10 , Figure 12 , Figure 13 as well as Figure 14As shown, the bearing cylinder 63 includes three arc-shaped plates evenly distributed along its circumference. Each arc-shaped plate is recessed towards the axis of the bearing cylinder 63 to form a material storage groove 64. Adjacent arc-shaped plates are connected by two connecting rods. There is an installation slot 66 between any two adjacent arc-shaped plates. The bearing cylinder 63 has three installation slots 66. The coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 are respectively disposed in the three installation slots 66, and the two ends of the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 are rotatably connected to the two connecting rods in the corresponding installation slots 66. By adopting this structure and optimizing the structure of the bearing cylinder 63, the overall stability of the bearing cylinder 63 can be improved, making the installation of the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 more convenient, while ensuring that the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 can work normally.

[0066] In some embodiments of this application, two connecting rods are located at both ends of the arc-shaped plate, and the two connecting rods are provided with through holes. The first sealing plate 61 and the second sealing plate 62 are provided with through holes. The two ends of the coarse grinding roller 67, the fine grinding roller 68 and the fine grinding roller 69 extend out through the through holes and through holes, respectively.

[0067] It should be noted that during continuous operation, traditional milling devices generate heat due to the constant friction between the milling device and the grain, causing the internal temperature of the milling device to gradually rise. Furthermore, since traditional milling devices are sealed chambers, this exacerbates heat accumulation, leading to overheating of the equipment itself. This not only increases the rate of mechanical failure and shortens the equipment's lifespan, but more importantly, the high-temperature environment can also cause starch gelatinization in the grains, affecting the taste of the milled grain powder and resulting in nutrient loss in the finished powder product.

[0068] Based on the above problems, in some embodiments of this application, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the bearing cylinder 63 is also provided with three arc-shaped partitions 610 arranged sequentially along its circumference. The arc-shaped partitions 610 are concave towards the axis of the bearing cylinder 63. The coarse grinding roller 67, fine grinding roller 68 and fine grinding roller 69 are respectively arranged in the grooves of the three arc-shaped partitions 610, and there is a first heat dissipation channel between the coarse grinding roller 67, fine grinding roller 68 and fine grinding roller 69 and the arc-shaped partitions 610. The grinding device also includes a heat dissipation and ventilation assembly, which includes a protective cover 613, a gearbox, a fan blade 614 and a second gear 615. The protective cover 613 is fixed to the outer surface of the second sealing plate 62, the gearbox is fixed to the inner wall of the protective cover 613, the output end of the gearbox is fixedly connected to the fan blade 614, the input end of the gearbox extends through the protective cover 613 and is connected to the second gear 615, and a second toothed ring 620 is provided on the inner circumferential surface of the bearing ring 618, and the second gear 615 meshes with the second toothed ring 620. The gearbox is a common type of fan gearbox, used to increase the rotational speed of the fan blades 614, thereby increasing the amount of air entering the arc-shaped exhaust port 612 per unit time. With this structure, as the bearing cylinder 63 rotates clockwise, the second sealing plate 62 drives the heat dissipation and ventilation assembly to rotate around the axis of the bearing cylinder 63, which in turn drives the second gear 615 to travel on the second gear ring 620. When the second gear 615 moves, it drives the fan blades 614 to rotate via the gearbox, delivering cooling air. As the cooling air flows through the first heat dissipation channel, it carries away the heat generated during grinding by the coarse grinding rollers 67, fine grinding rollers 68, and micro-grinding rollers 69, improving their heat dissipation performance and thus enhancing the overall heat dissipation capacity of the equipment. This prevents overheating of the equipment body, reducing the mechanical failure rate and extending the equipment's lifespan. Simultaneously, it prevents the high-temperature environment from causing starch gelatinization in the grains, which would affect the taste of the milled grain powder and ensure that the nutritional value of the finished powder product is not lost.

[0069] It is understood that the device described in this application, through the double-toothed ring structure of the bearing ring 618, synchronously drives the heat dissipation and ventilation components and the long crushing wheel 616 to move. This allows the single drive source of the drive mechanism 8 to drive the coarse grinding roller 67, fine grinding roller 68, and micro-grinding roller 69 on the bearing cylinder 63 to rotate, thereby achieving the grinding of grains. At the same time, it can also drive the first gear 617 to rotate, thereby driving the fan blade 614 to rotate and generate heat dissipation airflow, providing cool air for grinding heat dissipation. It can also drive the second gear 615 to rotate, thereby driving the long crushing wheel 616 to rotate, thereby achieving the crushing and tumbling of grain particles, so that the grain particles can be pushed into the area between the grinding roller and the grinding cylinder 5, accelerating the grinding speed of the grains. This mechanical linkage structure reduces intermediate transmission components, significantly improving power transmission efficiency and reducing equipment failure rate. In addition, the drive mechanism 8 achieves precise start-stop positioning through program control. Each time the power is cut off, the coarse grinding roller 67 automatically returns to its initial position. Combined with the volume design of the storage groove 64, it ensures that the grains can be ground sequentially from the coarse grinding roller 67 to the fine grinding roller 68 and then to the fine grinding roller 69.

[0070] In some embodiments of this application, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 10 and Figure 12 As shown, the second sealing plate 62 has three arc-shaped air inlets 611, each corresponding to one of the three first heat dissipation channels. Three heat dissipation ventilation components are provided, each corresponding to one of the three arc-shaped air inlets 611. The protective cover 613 has multiple air inlets. The first sealing plate 61 has three arc-shaped exhaust holes 612, each corresponding to one of the three arc-shaped air inlets 611. With this structure, the cold air generated by the fan can enter the first heat dissipation channels through the arc-shaped air inlets 611 and exit through the arc-shaped exhaust holes 612, achieving air circulation and improving the heat dissipation effect of the grinding device.

[0071] In some embodiments of this application, such as Figure 2 , Figure 3 , Figure 11 , Figure 15 and Figure 16As shown, the discharge mechanism 7 includes a heat-conducting conveying cylinder 71 and a conveying assembly. The heat-conducting conveying cylinder 71 is sleeved inside the supporting cylinder 63. Both ends of the heat-conducting conveying cylinder 71 are fixedly connected to the first sealing plate 61 and the second sealing plate 62, respectively. The conveying assembly is located inside the heat-conducting conveying cylinder 71 and is rotatably connected to it. Three storage grooves 64 are provided on the outer circumferential surface of the supporting cylinder 63, each with a sieve hole. Three guide hoppers 72 and three powder collection holes are provided on the outer circumferential surface of the heat-conducting conveying cylinder 71. The bottoms of the three guide hoppers 72 correspond one-to-one with the three powder collection holes, and the tops of the three guide hoppers 72 correspond one-to-one with the sieve holes of the three storage grooves 64. With this structure, the grain powder falling from the sieve holes can be collected through the guide hoppers 72, ensuring that the grain powder in the storage grooves 64 can enter the heat-conducting conveying cylinder 71.

[0072] In some embodiments of this application, the top cross-sectional area of ​​the guide hopper 72 is larger than the area of ​​the sieve hole area 65. The guide hopper 72 includes two inclined plates and two connecting plates, which together form a conical guide cavity that is larger at the top and smaller at the bottom.

[0073] In some embodiments of this application, such as Figure 11 and Figure 16 As shown, each powder collection hole is also equipped with two baffle plates 73. One side of the baffle plate 73 is connected to the powder collection hole, and the other side is inclined towards the inside of the heat-conducting conveying cylinder 71. The two baffle plates 73 are symmetrically arranged, and there is a gap between the two baffle plates 73 to form a conical guiding cavity. The grain powder is conveyed through the sieve holes to the guide hopper 72, then to the conical guiding cavity, and finally to the conveying assembly inside the heat-conducting conveying cylinder 71. The two baffle plates 73 are arranged in a V-shape. With this structure, the baffle plates 73 can both block the grain powder in the heat-conducting conveying cylinder 71 to prevent it from flowing out, and guide the powder in the guide hopper 72 to facilitate its entry into the heat-conducting conveying cylinder 71.

[0074] In some embodiments of this application, such as Figure 10 , Figure 11 , Figure 12 and Figure 16As shown, an arc-shaped baffle 74 is provided between any two adjacent guide hoppers 72. The two sides of the arc-shaped baffle 74 are fixedly connected to the two adjacent guide hoppers 72 respectively. There is a gap between the inner circumferential surface of the arc-shaped baffle 74 and the outer circumferential surface of the heat-conducting conveying cylinder 71 to form a second heat dissipation channel 75. The first sealing plate 61 is provided with three drying air inlets 713, and the second sealing plate 62 is provided with three drying exhaust ports 712. The three drying air inlets 713 correspond one-to-one with one end of the three second heat dissipation channels 75, and the three drying exhaust ports 712 correspond one-to-one with the other end of the three second heat dissipation channels 75. There is a heat-conducting cavity between the front cover 3 and the first sealing plate 61, and the rear cover 4 is provided with ventilation holes. With this structure, when the fan rotates to deliver cooling air into the first heat dissipation channel, the cooling air absorbs heat through the first heat dissipation channel and is discharged from the arc-shaped exhaust port 612 to the heat conduction cavity between the front cover 3 and the first sealing plate 61. At this time, the hot air in the heat conduction cavity enters the three second heat dissipation channels 75 through the three drying air inlets 713, thereby drying the grain powder inside the heat conduction conveying cylinder 71. The air in the second heat dissipation channel 75 is discharged through the drying exhaust port 712 and the ventilation hole on the rear cover 4, which optimizes the flow path of the cooling air and improves the automation level of the overall device.

[0075] It is understandable that the heat-conducting conveying cylinder 71 of the discharge mechanism 7 works in conjunction with the grinding mechanism 6 to form a heat exchange system. The arc-shaped partition 610 of the grinding mechanism 6 forms a heat dissipation gap with the grinding roller. The air inlet of the second sealing plate 62 introduces cold air for directional circulation. The heat dissipation and ventilation component drives the fan blade 614 to rotate through the ring rack assembly. The gearbox converts the rotational kinetic energy of the equipment into forced convection power. On the one hand, the heat generated by grinding pre-dries the qualified grain powder through the heat-conducting conveying cylinder 71. On the other hand, the heat dissipation and ventilation component accurately delivers cold air to the heat dissipation gap, which not only prevents the equipment from overheating, but also forms a temperature gradient of "cooling in the grinding zone - drying in the discharge zone". This thermal energy circulation structure can reduce the drying energy consumption of the equipment, while avoiding high temperature damage to the nutritional components of the grain, effectively inhibiting the starch gelatinization reaction, and further improving the quality stability of the product.

[0076] In some embodiments of this application, such as Figure 15 and Figure 16As shown, the conveying assembly includes an auger 78, a rotary joint 76, a discharge pipe 77, and a motor. The auger 78 is located inside the heat-conducting conveying cylinder 71. The rotary joint 76 includes an inner tube and an outer tube that are rotatably connected. The inner tube is fixedly connected to the discharge pipe 77, and the outer tube is fixedly connected to the heat-conducting conveying cylinder 71. One end of the auger 78 extends into the discharge pipe 77. The motor is driven by the auger 78 to drive its rotation and convey grain powder. The conveying assembly also includes a third gear 79 and a fourth gear 711 that mesh with each other. One end of the auger 78 extends through the discharge pipe 77 and is connected to the third gear 79. The fourth gear 711 is connected to the motor. The diameter of the third gear 79 is smaller than the diameter of the fourth gear 711. With this structure, the motor drives the fourth gear 711 to rotate, which in turn drives the third gear 79 to rotate, and the third gear 79 in turn drives the auger 78 to rotate, thus realizing the conveying of grain powder.

[0077] In some embodiments of this application, the auger 78 includes a rotating shaft and helical blades. The rotating shaft is connected to a third gear 79, and the helical blades are located on the outer circumferential surface of the rotating shaft. When the third gear 79 drives the rotating shaft to rotate, the helical blades convey the grain powder to the discharge pipe 77.

[0078] In some embodiments of this application, the inner tube of the rotary joint 76 is sleeved inside the outer tube, and the inner tube and the outer tube are rotatably connected. Since the heat-conducting material conveying cylinder 71 can rotate together with the bearing cylinder 63, the rotary joint 76 can ensure that the heat-conducting material conveying cylinder 71 can rotate normally.

[0079] In some embodiments of this application, the motor is a commonly used micro motor 710, the discharge pipe 77 passes through the rear end cover 4 and extends to the outside, and the discharge pipe 77 and the rear end cover 4 are fixedly connected by bolts.

[0080] Understandably, the device described in this application achieves fully automated control from feeding, grinding to discharging. The heat-conducting conveying cylinder 71 of the discharging mechanism 7 is directly connected to the sieve area 65 through the grain grinding powder collection port. It utilizes the residual heat generated by grinding to dry the powder, significantly reducing the moisture content of the finished product. The auger 78 built into the discharging mechanism 7 can automatically discharge the ground grain powder, avoiding the trouble of manual cleaning and collection of the finished product in the traditional process, significantly reducing labor costs and improving the automation level of the production line. Compared with the traditional external drying process, the device described in this application has the advantages of energy saving and environmental protection. Furthermore, the two baffle plates 73 are arranged in a V-shape, which can further prevent powder escape and improve the collection efficiency of grain powder.

[0081] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the drive mechanism 8 includes a drive motor, a bearing housing, a transmission shaft, a first bearing seat, and a second bearing seat. A first bracket and a second bracket are fixed on the base 1. The bearing housing is mounted on the first bracket, the first bearing seat is mounted on the second bracket, and the second bearing seat is mounted on the front end cover 3. Bearings are installed inside the bearing housing, the first bearing seat, and the second bearing seat. The transmission shaft passes sequentially through the bearings in the bearing housing, the first bearing seat, and the second bearing seat. One end of the transmission shaft is connected to the drive motor, and the other end is fixedly connected to the first sealing plate 61. This structure improves the overall stability of the grinding device. Simultaneously, the drive motor can drive the first sealing plate 61 to rotate via the transmission shaft.

[0082] In some embodiments of this application, the drive motor can be connected to the transmission shaft via a gear assembly, which can be a worm gear assembly, etc.

[0083] The usage process of the aforementioned device in this application is as follows:

[0084] First, a certain amount of grain to be processed is fed into the feed port at the top of the outer cylinder 2. The grain enters one of the storage grooves 64 through the feed port. There are fine grinding rollers 69 and coarse grinding rollers 67 on both sides of this area. When the container stands facing the rear cover 4, the output shaft of the drive mechanism 8 drives the first sealing plate 61 to rotate clockwise. When the bearing cylinder 63 rotates, the grain inside the storage groove 64 slides towards the position of the coarse grinding roller 67 under the action of gravity, so that the grain is concentrated on the coarse grinding roller 67. At the same time, the first gear 617 at one end of the long crushing wheel 616 is driven to rotate by the first gear ring 619. The blades on the surface of the long crushing wheel 616 push the grain towards the coarse crushing roller 67. Under the rolling pressure of the coarse crushing roller 67 and the friction of the grinding cylinder 5, the grain is crushed from its original state into larger particles. Grains that do not meet the particle size requirements slide into the area between the coarse crushing roller 67 and the fine crushing roller 68 through the gap between the coarse crushing roller 67 and the grinding cylinder 5.

[0085] While grinding the grain, the coarse grinding roller 67 rotates due to the friction of the grain. Since the coarse grinding roller 67, fine grinding roller 68, and micro grinding roller 69 are rotatably connected to the corresponding mounting slots 66, the grain particles attached to the surface of the coarse grinding roller 67 are scraped off and returned to the storage groove 64 area when the coarse grinding roller 67 rotates. The tiny grain powder formed after being ground by the coarse grinding roller 67 can enter the guide hopper 72 at the corresponding position through the sieve holes 65 on both sides of the coarse grinding roller 67. The grain powder passes through the guide hopper 72 and enters the heat-conducting conveying cylinder 71. The micro motor 710 drives the fourth gear 711 to drive the third gear 79 to rotate. When the third gear 79 rotates, it drives the auger 78 to rotate. When the auger 78 rotates, it drives the grain powder inside the heat-conducting conveying cylinder 71 to move towards the discharge pipe 77. The grain powder is output from the bottom of the discharge pipe 77 under its own gravity.

[0086] Larger grain particles, after being ground by the coarse grinding roller 67, slide down into the area between the coarse grinding roller 67 and the fine grinding roller 68 under gravity. Under the combined action of gravity and the pushing force of the long crushing wheel 616, these larger grain particles are pushed into the gap between the fine grinding roller 68 and the grinding cylinder 5. Through the grinding action of the fine grinding roller 68 and the grinding cylinder 5, the larger grain particles are ground into fine powder. Meanwhile, the grain particles, now reduced to a small size, can pass through the sieve area 65 between the coarse and fine grinding rollers 67 and enter the guide hopper 72. The grain powder passes through the guide hopper 72 and enters the heat-conducting conveying cylinder 71. The micro motor 710 drives the fourth gear 711, which in turn drives the third gear 79 to rotate. The rotation of the third gear 79 drives the auger 78 to rotate, which in turn moves the grain powder inside the heat-conducting conveying cylinder 71 towards the discharge pipe 77. The grain powder is then discharged from the bottom of the discharge pipe 77 under its own gravity.

[0087] After the bearing cylinder 63 rotates to a certain angle, the fine particles ground by the fine grinding roller 68 slide into the gap between the fine grinding roller 68 and the micro-grinding roller 69 under the action of gravity. The fine grain particles are pushed into the gap between the micro-grinding roller 69 and the grinding cylinder 5 under the action of gravity and the pushing force of the long crushing wheel 616. The ground grain enters the guide hopper 72 through the sieve area 65. The grain powder passes through the guide hopper 72 and enters the heat-conducting conveying cylinder 71. The micro motor 710 drives the fourth gear 711 to drive the third gear 79 to rotate. When the third gear 79 rotates, it drives the auger 78 to rotate. When the auger 78 rotates, it drives the grain powder inside the heat-conducting conveying cylinder 71 to move towards the discharge pipe 77. The grain powder is output from the bottom of the discharge pipe 77 under its own gravity.

[0088] While the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69 are grinding, the second gear 615 in the three heat dissipation and ventilation components is driven by the second gear ring 620. Through the acceleration of the gearbox, the fan blade 614 rotates rapidly. External air is drawn into the protective cover 613 through the air inlet on its surface and enters the first heat dissipation channel through the corresponding arc-shaped air inlet 611. The cooler air, passing through the first heat dissipation channel, can sweep the surfaces of the coarse grinding roller 67, fine grinding roller 68, and fine grinding roller 69, thus improving the grinding efficiency. The heat generated by grinding on the grinding rollers 67, 68, and 69 can be carried away by the flowing air and output to the space between the front cover 3 and the first sealing plate 61 through the arc-shaped exhaust holes 612 at the corresponding positions. Then, the heated air is input into the second heat dissipation channel 75 at the corresponding positions through multiple drying air inlets 713. The heat in the hot air is transferred to the grain powder inside the heat-conducting conveying cylinder 71 through the outer wall of the cylinder, completing the drying of the grain powder. Finally, the hot air is discharged through the drying exhaust holes 712 at the corresponding positions.

[0089] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0091] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A milling device for the deep processing of cereals, characterized in that it comprises: The mill comprises a base, a grinding cylinder assembly, a grinding mechanism, a discharging mechanism and a driving mechanism. The grinding cylinder assembly comprises an outer cylinder, a front end cover and a rear end cover, the front end cover and the rear end cover are fixed to the axial two sides of the outer cylinder, the outer cylinder is fixed to the base, and the outer cylinder is provided with a feeding port. The grinding mechanism is arranged in the outer cylinder, the grinding mechanism comprises a first sealing plate, a second sealing plate, a bearing cylinder, a coarse grinding roller, a fine grinding roller and a fine grinding roller, the first sealing plate and the second sealing plate are fixed to the axial two sides of the outer cylinder, the coarse grinding roller, the fine grinding roller and the fine grinding roller are all installed on the bearing cylinder and are distributed along the circumference of the bearing cylinder, the inner wall of the outer cylinder is fixed with a grinding cylinder, the grinding cylinder is sleeved on the outside of the bearing cylinder, and the spacing between the coarse grinding roller, the fine grinding roller and the fine grinding roller and the inner wall of the grinding cylinder gradually decreases. The discharging mechanism is arranged in the bearing cylinder, the bearing cylinder is provided with a plurality of sieve holes, and the grains enter the discharging mechanism through the sieve holes. The driving mechanism is fixed to the base, the driving mechanism and the first sealing plate are in transmission connection to drive the first sealing plate to rotate, and the first sealing plate drives the bearing cylinder to rotate when rotating.

2. The milling apparatus for advanced processing of cereals according to claim 1, characterized in that, The outer circumferential surface of the bearing cylinder is provided with a storage groove, the sieve hole is located in the storage groove, and the grinding mechanism further comprises a long crushing wheel, a first gear and a bearing ring, both ends of the long crushing wheel are rotatably connected with the first sealing plate and the second sealing plate respectively, and the long crushing wheel is located in the storage groove. The bearing ring is fixed to the inner wall of the rear end cover, one end of the long crushing wheel extends through the second sealing plate to form an extension part, the first gear is fixedly connected with the extension part, the first gear is coaxially arranged with the long crushing wheel, the bearing ring is coaxially arranged with the bearing cylinder, the outer circumferential surface of the bearing ring is provided with a first tooth ring, and the first gear is in meshing connection with the first tooth ring. When the first sealing plate rotates in the clockwise direction, the long crushing wheel rotates around the axis of the bearing cylinder in the clockwise direction, and through the cooperation of the first gear and the first tooth ring, the long crushing wheel rotates around its own axis in the clockwise direction to stir the grains in the storage groove.

3. The milling apparatus for advanced processing of cereals according to claim 2, characterized in that, The bearing cylinder comprises three arc-shaped plates which are uniformly distributed along the circumference of the bearing cylinder, each arc-shaped plate is concave towards the axis of the bearing cylinder to form the storage groove, and two adjacent arc-shaped plates are connected through two connecting rods. There is an installation through groove between any two adjacent arc-shaped plates, the bearing cylinder has three installation through grooves, and the coarse grinding roller, the fine grinding roller and the fine grinding roller are arranged in the three installation through grooves respectively.

4. The milling apparatus for advanced processing of cereals according to claim 2, characterized in that, The bearing cylinder is further provided with three arc-shaped partitions which are sequentially distributed along the circumference of the bearing cylinder, the arc-shaped partitions are concave towards the axis of the bearing cylinder, the coarse grinding roller, the fine grinding roller and the fine grinding roller are arranged in the grooves of the three arc-shaped partitions respectively, and the first heat dissipation channels exist between the coarse grinding roller, the fine grinding roller, the fine grinding roller and the arc-shaped partitions. The grinding device further comprises a heat dissipation and ventilation assembly, the heat dissipation and ventilation assembly comprises a protective cover, a transmission, a fan blade and a second gear, the protective cover is fixed on the outer surface of the second sealing plate, the transmission is fixed on the inner wall of the protective cover, the output end of the transmission is fixedly connected with the fan blade, the input end of the transmission extends through the protective cover and is connected with the second gear, and the inner circumferential surface of the bearing ring is provided with a second gear ring, and the second gear is engaged with the second gear ring.

5. The milling apparatus for advanced processing of cereals according to claim 4, characterized in that, The second sealing plate is provided with three arc-shaped air inlet holes, the three arc-shaped air inlet holes correspond to the three first heat dissipation channels one by one, the heat dissipation and ventilation assembly is provided with three, and the three heat dissipation and ventilation assemblies correspond to the three arc-shaped air inlet holes one by one. The first sealing plate is provided with three arc-shaped air outlet holes, and the three arc-shaped air outlet holes correspond to the three arc-shaped air inlet holes one by one.

6. The milling apparatus for advanced processing of cereals according to claim 5, characterized in that, The discharging mechanism comprises a heat-conducting conveying cylinder and a conveying assembly, the heat-conducting conveying cylinder is sleeved in the bearing cylinder, and the two ends of the heat-conducting conveying cylinder are fixedly connected with the first sealing plate and the second sealing plate respectively; the conveying assembly is located in the heat-conducting conveying cylinder and rotationally connected with the heat-conducting conveying cylinder. The outer circumferential surface of the bearing cylinder is provided with three storage grooves, each storage groove is provided with a sieve hole, the outer circumferential surface of the heat-conducting conveying cylinder is provided with three material guide hoppers, the outer circumferential surface of the heat-conducting conveying cylinder is provided with three powder collecting holes, the bottoms of the three material guide hoppers correspond to the three powder collecting holes one by one, and the tops of the three material guide hoppers correspond to the sieve holes of the three storage grooves one by one.

7. The milling apparatus for advanced processing of cereals according to claim 6, characterized in that, Each powder collecting hole is further provided with two material separation plates, one side of the material separation plate is connected with the powder collecting hole, the other side is inclined towards the inside of the heat-conducting conveying cylinder, the two material separation plates are symmetrically arranged, and a gap exists between the two material separation plates to form a conical material guide cavity. The grain powder is conveyed to the material guide hoppers through the sieve holes, to the conical material guide cavities through the material guide hoppers, and to the conveying assembly in the heat-conducting conveying cylinder through the conical material guide cavities.

8. The milling apparatus for advanced processing of cereals according to claim 7, characterized in that, An arc-shaped baffle is arranged between any two adjacent material guide hoppers, the two sides of the arc-shaped baffle are fixedly connected with the two adjacent material guide hoppers respectively, and a gap exists between the inner circumferential surface of the arc-shaped baffle and the outer circumferential surface of the heat-conducting conveying cylinder to form a second heat dissipation channel. The first sealing plate is provided with three drying air inlet holes, the second sealing plate is provided with three drying air outlet holes, the three drying air inlet holes correspond to one end of the three second heat dissipation channels one by one, and the three drying air outlet holes correspond to the other end of the three second heat dissipation channels one by one. A heat conduction cavity exists between the front end cover and the first sealing plate, and the rear end cover is provided with a ventilation hole.

9. The milling apparatus for advanced processing of cereals according to claim 6, characterized in that, The conveying assembly includes an auger, a rotary joint, a discharge pipe, and a motor. The auger is located inside the heat-conducting conveying cylinder. The rotary joint includes an inner tube and an outer tube that are rotatably connected. The inner tube is fixedly connected to the discharge pipe, and the outer tube is fixedly connected to the heat-conducting conveying cylinder. One end of the auger extends into the discharge pipe. The motor is driven by the auger to drive the auger to rotate and convey grain powder. The conveying assembly also includes a third gear and a fourth gear that mesh with each other. One end of the auger extends through the discharge pipe and is connected to the third gear. The fourth gear is connected to the motor. The diameter of the third gear is smaller than the diameter of the fourth gear.

10. The milling apparatus for advanced processing of cereals according to claim 2, characterized in that, The drive mechanism includes a drive motor, a bearing housing, a transmission shaft, a first bearing seat, and a second bearing seat. A first bracket and a second bracket are fixed on the base. The bearing housing is mounted on the first bracket, the first bearing seat is mounted on the second bracket, and the second bearing seat is mounted on the front end cover. Bearings are provided in the bearing housing, the first bearing seat, and the second bearing seat. The drive shaft is inserted into the bearings in the bearing housing, the first bearing seat, and the second bearing seat in sequence. One end of the drive shaft is connected to the drive motor, and the other end is fixedly connected to the first sealing plate.

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