Automatic grinding equipment for rice processing

Abstract

The invention discloses automatic grinding equipment for rice processing, which comprises a plurality of external expansion type surface cleaning mechanisms mounted on a fixing frame, a transmission mechanism is assembled between the fixing frame and the external expansion type surface cleaning mechanisms, and a suction type impurity separation mechanism is mounted at the lower end of each external expansion type surface cleaning mechanism. A discharge hole of the suction type impurity separation mechanism is connected with the fineness-adjustable grinding mechanism; the external expansion type surface cleaning mechanism comprises a vertical outer cylinder, the vertical outer cylinder is installed on the fixing frame, an external expansion inner core is arranged in the vertical outer cylinder, the lower end of the external expansion inner core is connected with the transmission mechanism, the lower end of the vertical outer cylinder is rotationally connected with the adapter, and a plurality of material passing openings are formed in the adapter. According to the rice grinding device, impurities doped in rice and impurities on the rice can be effectively separated, the cleanliness of the ground rice is improved, the quality of the ground rice is ensured, and subsequent storage is facilitated. The device is suitable for impurity removal, polishing, grinding and other operations of rice.

Description

Technical Field

[0001] The invention belongs to the technical field of rice processing, and in particular relates to an automatic grinding device for rice processing. Background Art

[0002] After rice is harvested, some rice husks will remain on the surface of the rice, and there will be insects or eggs attached to the rice, which makes it more difficult to store the rice and affects the quality of the rice. It is then necessary to clean the rice, remove the impurities mixed with it and the residual substances attached to it, and then screen out these impurities through a vibrating screen; however, some impurities in the form of dust cannot be fully separated from the rice through the vibrating screen, resulting in a decrease in the separation effect. In addition, when grinding rice, a grinder is generally used to grind the rice that has not been completely cleaned, so that the ground rice contains impurities and its quality is reduced. In addition, due to the small size and light weight of the eggs, it is not easy to separate them by conventional means, and it is not easy to grind and break them in the subsequent grinding, so that the stored rice is at a suitable temperature, and the eggs hatch into insects, which eat and pollute the rice. Summary of the invention

[0003] The invention provides an automatic grinding device for rice processing, which is used for separating impurities mixed in rice and impurities on rice, improving the cleanliness of the ground rice, ensuring the quality of the ground rice, and facilitating subsequent storage.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An automated grinding device for rice processing comprises a plurality of outward-expanding surface cleaning mechanisms mounted on a fixed frame, a transmission mechanism for driving each outward-expanding surface cleaning mechanism to move is arranged between the fixed frame and the outward-expanding surface cleaning mechanisms, a suction-type impurity separation mechanism is mounted at the lower end of each outward-expanding surface cleaning mechanism, and the discharge port of the suction-type impurity separation mechanism is connected to a grinding mechanism with adjustable fineness through a transfer tube; the outward-expanding surface cleaning mechanism comprises a vertical outer cylinder with a feed hopper and a discharge hopper respectively constructed at the upper and lower ends, the vertical outer cylinder is mounted on the fixed frame, an outward-expanding inner core is coaxially arranged in the vertical outer cylinder, the lower end of the outward-expanding inner core is connected to the transmission mechanism through an adapter seat, and the lower end of the vertical outer cylinder is rotatably connected to the adapter seat, and a plurality of feed ports connected to the suction-type impurity separation mechanism are constructed on the adapter seat.

[0005] Furthermore, the external expansion inner core has a hollow external expansion cavity, and a plurality of conducting channels connected to the external expansion cavity are opened on the adapter seat, and these conducting channels are all connected to the annular channel on the adapter seat, and an annular closing cover is rotatably connected to the upper end of the annular channel, and the annular closing cover is connected to the vertical outer cylinder through a fixing ear, and a medium conducting pipe connected to the distribution sleeve is constructed on the annular closing cover, and the medium conducting pipe is connected to the annular channel, and a medium main pipe is constructed on the distribution sleeve.

[0006] Furthermore, the transmission mechanism includes a first vertical shaft rotatably mounted on a fixed frame, a first transmission wheel and a transmission gear are coaxially mounted on the first vertical shaft, an outer gear ring is coaxially mounted on each adapter seat, each outer gear ring is meshed with the outside of the transmission gear, and the distribution sleeve is coaxially rotatably mounted on the first vertical shaft.

[0007] Furthermore, a first cleaning layer is arranged on the inner circumferential wall of the vertical outer cylinder, and a second cleaning layer is arranged on the outer circumferential wall of the outward-expanding inner core, and an annular cleaning area is formed between the first cleaning layer and the second cleaning layer; a material guide head is constructed at the upper end of the outward-expanding inner core, and the radial length of the material guide head gradually decreases upward vertically, forming a material guide area between the material guide head and the vertical outer cylinder, and a discharge area is formed between the lower part of the outward-expanding inner core and the discharge hopper.

[0008] Furthermore, the suction-type impurity separation mechanism includes a separation cylinder whose diameter gradually decreases vertically downward, a discharge joint connected to a transfer tube is constructed at the lower end of the separation cylinder, an impurity suction pipe extending obliquely upward is connected to the outer peripheral wall of the separation cylinder, the impurity suction pipe connects the separation cylinder and a junction cylinder, and a suction main pipe is constructed on the junction cylinder; the separation cylinder is mounted on a conical sleeve, and an assembly seat is constructed on the conical sleeve.

[0009] Furthermore, a plurality of spiral material distribution blades are constructed on the inner wall of the separation cylinder, and the spiral material distribution blades are evenly arranged along the circumference of the separation cylinder.

[0010] Furthermore, the adjustable fineness grinding mechanism includes a coaxially arranged grinding outer cylinder and a grinding inner core, an upper end cover is detachably connected to the upper end of the grinding outer cylinder, a material collecting barrel is constructed at the center of the upper end cover, and each transfer tube is connected to the material collecting barrel; the grinding inner core is rotatably connected to the material collecting barrel via an adjustable transmission assembly.

[0011] Furthermore, the adjustable transmission assembly includes a connecting rod coaxially constructed on the upper end of the grinding inner core, a second vertical shaft is coaxially rotatably connected to the material collection barrel, a connecting groove is constructed at the lower end of the second vertical shaft, the connecting rod is movably inserted in the connecting groove, a second transmission wheel is coaxially mounted on the portion where the second vertical shaft extends out of the material collection barrel, an adjusting screw is coaxially threadedly connected to the upper end of the second vertical shaft, the lower end of the adjusting screw passes through the connecting groove and is rotatably connected to the upper end of the connecting rod, and a locking nut is threadedly connected to the adjusting screw.

[0012] Furthermore, the diameter of the grinding outer cylinder gradually decreases vertically downward, and the diameter of the grinding inner core also gradually decreases vertically downward, forming a grinding zone between the grinding outer cylinder and the grinding inner core, and a discharge joint is constructed at the lower end of the grinding outer cylinder, and a material collection zone and a transition zone are respectively formed in the material collection cylinder and the upper end cover, and the material collection zone, transition zone and grinding zone are interconnected; a cooling shell is provided on the outer shell of the grinding outer cylinder, and a cooling cavity is formed between the cooling shell and the grinding outer cylinder, and a cooling medium inlet pipe and a cooling medium outlet pipe are respectively constructed at the lower end and the upper end of the cooling shell.

[0013] Due to the adoption of the above structure, the technical progress achieved by the present invention compared with the prior art is that: the present invention supplies the rice to be processed to each external expansion type surface cleaning mechanism synchronously, and at the same time controls the transmission mechanism to drive these external expansion type surface cleaning mechanisms to move synchronously, and the external expansion type surface cleaning mechanism performs surface treatment on the rice entering therein, so that impurities, insect eggs, etc. are separated from the rice; the rice after treatment enters the suction type impurity separation mechanism together with the impurities, and because the weight of the rice is much greater than the weight of the impurities, the impurities are smoothly separated from the rice and sucked away by the suction type impurity separation mechanism; after that, the rice enters the fineness adjustable grinding mechanism through the transfer tube, and the fineness adjustable grinding mechanism grinds the clean rice, so that the quality of the obtained product meets the requirements. In addition, due to the adoption of multiple external expansion type surface cleaning mechanisms to remove impurities from the rice, the working efficiency is improved on the one hand, and on the other hand, it ensures that the surface of each rice is cleaned, thereby improving the cleaning effect. The present invention adopts an adjustable fineness grinding mechanism to grind rice, and the adjustable fineness grinding mechanism can be adjusted according to the required grinding fineness, so as to realize the grinding of products with different particle sizes; and according to the specific situation, the grinding fineness of the adjustable fineness grinding mechanism can be adjusted to the limit position, at which time, the rice will not be ground but directly pass through the adjustable fineness grinding mechanism, and in this process, the adjustable fineness grinding mechanism plays the role of gathering the rice out of multiple transfer tubes. The external expansion type surface cleaning mechanism of the present invention can perform surface cleaning on rice or seeds of other crops of different particle sizes, and by controlling the external expansion of the external expansion type surface cleaning mechanism, the size of the inner cavity of the external expansion type surface cleaning mechanism is adjusted, so as to be suitable for the passage of rice or seeds of other crops of corresponding particle sizes. In summary, the present invention can effectively separate the impurities mixed in the rice and the impurities on the rice, improve the cleanliness of the ground rice, ensure the quality of the ground rice, and facilitate subsequent storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0015] In the attached picture: Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 It is an axial structural cross-sectional view of an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of the structure of the middle A part; Figure 4 for Figure 2 A magnified view of the structure of the middle B area; Figure 5for Figure 2 A magnified view of the structure of the middle C part; Figure 6 This is a schematic diagram of the structure of an embodiment of the present invention after the adjustable fineness grinding mechanism is removed; Figure 7 It is a structural schematic diagram of the connection between the external expansion type surface cleaning mechanism and the suction type impurity separation mechanism according to an embodiment of the present invention; Figure 8 It is a partial structural cross-sectional view of a vertical outer cylinder in the external expansion type surface cleaning mechanism according to an embodiment of the present invention; Fig. 9 It is a partial structural cross-sectional view of the connection between the external expansion inner core and the adapter seat in the external expansion type surface cleaning mechanism of the embodiment of the present invention; Fig.10 This is a schematic diagram of the structure of the suction impurity separation mechanism after removing the conical sleeve according to an embodiment of the present invention; Fig.11 This is a schematic structural diagram of a tapered sleeve according to an embodiment of the present invention; Fig.12 It is a structural schematic diagram of a fixing frame according to an embodiment of the present invention; Fig.13 It is a schematic diagram of the structure of connecting a plurality of transfer tubes to a grinding mechanism with adjustable fineness according to an embodiment of the present invention; Fig.14 It is a structural exploded diagram of the fineness adjustable grinding mechanism according to an embodiment of the present invention.

[0016] Labeled parts: 100-fixed frame, 101-mounting seat, 102-connecting arm, 103-fixing hoop, 104-connecting ear, 200-external expansion surface cleaning mechanism, 201-vertical outer cylinder, 202-feed hopper, 203-discharge hopper, 204-first cleaning layer, 205-annular closing cover, 206-fixing ear, 207-adapter seat, 208-feeding port, 209-external expansion inner core , 210- material guide head, 211- external expansion cavity, 212- second cleaning layer, 213- annular channel, 214- material guide area, 215- material discharge area, 216- conduction channel, 217- distribution sleeve, 218- medium main pipe, 219- medium conduction pipe, 220- cleaning area, 300- transmission mechanism, 301- first vertical shaft, 302- first transmission wheel, 303- transmission gear, 304 -outer gear ring, 400-suction type impurity separation mechanism, 401-separation cylinder, 402-discharge joint, 403-spiral distribution blade, 404-impurity suction pipe, 405-collecting cylinder, 406-suction main pipe, 407-conical sleeve, 408-assembly seat, 500-transfer tube, 600-fineness adjustable grinding mechanism, 601-grinding outer cylinder, 602-discharge joint, 603-upper end cover, 604-collecting cylinder, 605-plug-in groove, 606-grinding inner core, 607-second vertical axis, 608-plug-in rod, 609-collecting area, 610-transition area, 611-grinding area, 612-second transmission wheel, 613-adjusting screw, 614-locking nut, 615-cooling shell, 616-cooling medium inlet pipe, 617-cooling medium outlet pipe, 618-cooling chamber. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] The present invention discloses an automatic grinding device for rice processing, such as Figure 1-14As shown, it includes a fixed frame 100, a transmission mechanism 300, a grinding mechanism 600 with adjustable fineness, and a plurality of external expansion type surface cleaning mechanisms 200. Among them, these external expansion type surface cleaning mechanisms 200 are all installed on the fixed frame 100, and the transmission mechanism 300 is assembled between the fixed frame 100 and these external expansion type surface cleaning mechanisms 200, and the transmission mechanism 300 is used to drive these external expansion type surface cleaning mechanisms 200 to move synchronously. The present invention is provided with a suction type impurity separation mechanism 400 at the lower end of each external expansion type surface cleaning mechanism 200, and the discharge port of the suction type impurity separation mechanism 400 is connected to the feed port of the grinding mechanism 600 with adjustable fineness through a transfer tube 500. The working principle and advantages of the present invention are as follows: the present invention supplies the rice to be processed to each external expansion type surface cleaning mechanism 200 synchronously, and controls the transmission mechanism 300 to move, so that it drives these external expansion type surface cleaning mechanisms 200 to move synchronously, and the external expansion type surface cleaning mechanism 200 performs surface treatment on the rice entering therein, so that impurities, insect eggs, etc. are separated from the rice; the rice after treatment enters the suction type impurity separation mechanism 400 together with the impurities, and because the weight of the rice is much greater than the weight of the impurities, the impurities are smoothly separated from the rice and sucked away by the suction type impurity separation mechanism 400; after that, the rice enters the fineness adjustable grinding mechanism 600 through the transfer tube 500, and the fineness adjustable grinding mechanism 600 grinds the clean rice, so that the quality of the obtained product meets the requirements. In addition, the present invention uses multiple external expansion type surface cleaning mechanisms 200 to remove impurities from the rice, which improves the working efficiency on the one hand, and ensures that the surface of each rice is cleaned on the other hand, thereby improving the cleaning effect. The present invention adopts a grinding mechanism 600 with adjustable fineness to grind rice. The grinding mechanism 600 with adjustable fineness can be adjusted according to the required grinding fineness, so as to achieve the grinding of products with different particle sizes. Moreover, the grinding fineness of the grinding mechanism 600 with adjustable fineness can be adjusted to the limit position according to the specific situation. At this time, the rice will not be ground but directly pass through the grinding mechanism 600 with adjustable fineness. In this process, the grinding mechanism 600 with adjustable fineness plays the role of gathering the rice coming out of multiple transfer tubes 500. The external expansion type surface cleaning mechanism 200 of the present invention can perform surface cleaning on rice or seeds of other crops with different particle sizes. By controlling the external expansion of the external expansion type surface cleaning mechanism 200, the size of the inner cavity of the external expansion type surface cleaning mechanism 200 is adjusted, so as to be suitable for the passage of rice or seeds of other crops with corresponding particle sizes. In summary, the present invention can effectively separate the impurities mixed in the rice and the impurities on the rice, improve the cleanliness of the ground rice, ensure the quality of the ground rice, and facilitate the subsequent storage.

[0019] As a preferred embodiment of the present invention, Figure 2 , 4As shown in 6-9, the external expansion type surface cleaning mechanism 200 includes a vertical outer cylinder 201, an external expansion inner core 209 and an adapter 207, and the axes of the three coincide. Among them, a feed hopper 202 and a discharge hopper 203 are respectively constructed at the upper and lower ends of the vertical outer cylinder 201, and the vertical outer cylinder 201 can be detachably mounted on the fixed frame 100. The external expansion inner core 209 is arranged in the vertical outer cylinder 201. The lower end of the external expansion inner core 209 is connected to the transmission mechanism 300 through the adapter 207, and the lower end of the vertical outer cylinder 201 is rotatably connected to the adapter 207. A plurality of material passing ports 208 are uniformly constructed on the adapter 207 along its circumference, and these material passing ports 208 are all connected to the suction type impurity separation mechanism 400. In this embodiment, the transmission mechanism 300 drives the adapter 207 to rotate, so that it drives the outer expansion inner core 209 to rotate, and then the rice that falls between the vertical outer cylinder 201 and the outer expansion inner core 209 is gradually polished, so that the outer surface of the rice can be fully cleaned, and the purpose of impurity separation is achieved; after cleaning, the separated rice and impurities enter the suction impurity separation mechanism 400 through the feeding port 208. The outer expansion inner core 209 of this embodiment has a hollow outer expansion cavity 211, and a plurality of conducting channels 216 are opened on the adapter 207, and these conducting channels 216 are all connected to the outer expansion cavity 211; an annular channel 213 is opened on the upper end surface of the adapter 207, and the annular channel 213 is connected to each conducting channel 216. In this embodiment, an annular sealing cover 205 is rotatably connected to the upper end of the annular channel 213, and the annular sealing cover 205 is connected to the vertical outer cylinder 201 through the fixing ear 206. A medium conducting pipe 219 is constructed on the annular sealing cover 205, and the medium conducting pipe 219 is connected to the distribution sleeve 217. The medium conducting pipe 219 is connected to the annular channel 213, and a medium main pipe 218 is constructed on the distribution sleeve 217. The working principle and advantage of this embodiment are: in this embodiment, the pressure medium is supplied from the medium main pipe 218 to the annular channel 213 of each adapter 207 through the distribution sleeve 217, and then supplied from the annular channel 213 to the outer expansion cavity 211 of the outer expansion inner core 209 through the conducting channel 216, thereby expanding the outer expansion inner core 209, so that it cooperates with the vertical outer cylinder 201 to efficiently rub and knead the outer surface of the rice entering between the two, so as to achieve the purpose of removing impurities from the rice.

[0020] As a preferred embodiment of the present invention, Fig.12 As shown, the fixing frame 100 includes a disc-shaped mounting seat 101, on the peripheral wall of the mounting seat 101, a plurality of connecting arms 102 are evenly arranged along the circumference thereof, a fixing hoop 103 is fixed on each connecting arm 102, the fixing hoop 103 is fixedly sleeved outside the corresponding vertical outer cylinder 201, and a connecting ear 104 is constructed on the fixing hoop 103, and the connecting ear 104 is connected and fixed to a nearby fixed object. Figure 4 , 6As shown, the transmission mechanism 300 includes a first vertical shaft 301, a first transmission wheel 302, a transmission gear 303 and a plurality of outer gear rings 304, wherein the first vertical shaft 301 is rotatably mounted on the mounting seat 101, the first transmission wheel 302 and the transmission gear 303 are both mounted on the first vertical shaft 301, and the axes of the first transmission wheel 302, the transmission gear 303 and the first vertical shaft 301 coincide. Each outer gear ring 304 is coaxially mounted on the corresponding adapter seat 207, and the transmission gear 303 is externally meshed with each outer gear ring 304, and the distribution sleeve 217 is coaxially rotatably mounted on the first vertical shaft 301. In this embodiment, the first transmission wheel 302 is driven to rotate, so that the transmission gear 303 is driven to rotate through the first vertical shaft 301. During the rotation of the transmission gear 303, all the outer gear rings 304 are driven to rotate. The outer gear rings 304 drive the corresponding outer expansion inner cores 209 to rotate in the vertical outer cylinder 201 through the adapter seat 207, so as to achieve the purposes of grinding, polishing, and removing impurities of rice.

[0021] As a preferred embodiment of the present invention, Figure 3 , 8 As shown in Figures 9 and 10, a first cleaning brush layer 204 is provided on the inner circumferential wall of the vertical outer cylinder 201, and a second cleaning brush layer 212 is provided on the outer circumferential wall of the external expansion inner core 209, and an annular cleaning brush area 220 is formed between the first cleaning brush layer 204 and the second cleaning brush layer 212. The first cleaning brush layer 204 and the second cleaning brush layer 212 of this embodiment have the same structure, and both can be brush layers, and the brush density, hardness and other parameters of the brush layer can be changed according to the required polishing finish and impurity attachment ability. In this embodiment, a guide head 210 is constructed at the upper end of the external expansion inner core 209, and the radial length of the guide head 210 gradually decreases upward in the vertical direction, forming a guide area 214 between the guide head 210 and the vertical outer cylinder 201, and a discharge area 215 is formed between the lower part of the external expansion inner core 209 and the discharge hopper 203. The rice enters the material guiding area 214 from the feeding hopper 202 , and then passes through the cleaning area 220 , the discharging area 215 , and the material passing port 208 in sequence before entering the suction impurity separation mechanism 400 .

[0022] As a preferred embodiment of the present invention, Figure 2 , 10As shown in Figures 11, the suction impurity separation mechanism 400 includes a separation cylinder 401, a conical sleeve 407 and a confluence cylinder 405. The diameter of the separation cylinder 401 gradually decreases downward in the vertical direction. A discharge joint 402 is configured at the lower end (small diameter end) of the separation cylinder 401. The discharge joint 402 is connected to the upper end of the corresponding transfer tube 500. An impurity suction pipe 404 is connected to the outer peripheral wall of the separation cylinder 401. The impurity suction pipe 404 extends upward from the separation cylinder 401, thereby preventing the rice falling into the separation cylinder 401 from entering the impurity suction pipe 404. The two ends of the impurity suction pipe 404 of this embodiment are respectively connected to the separation cylinder 401 and the confluence cylinder 405, and a suction main pipe 406 is configured on the confluence cylinder 405. The separation cylinder 401 is assembled on the conical sleeve 407, and an assembly seat 408 is configured on the conical sleeve 407. The assembly seat 408 is fixed on a nearby fixed object. The working principle of this embodiment is as follows: when rice and impurities enter the separation cylinder 401, the movement speed of rice under the action of gravity is greater than the movement speed of impurities, so as to achieve the purpose of separation from impurities. At the same time, the suction main pipe 406 is sucked to generate negative pressure in the separation cylinder 401. Since the impurities are light in texture, they are quickly drawn out of the separation cylinder 401 under the negative pressure. In order to improve the separation effect of rice and impurities, the measures taken are as follows: in this embodiment, a plurality of spiral material distribution blades 403 are constructed on the inner wall of the separation cylinder 401, and these spiral material distribution blades 403 are evenly arranged along the circumference of the separation cylinder 401. Because the difference in the movement speed of rice and impurities increases under the action of the spiral material distribution blades 403, and the residence time of impurities in the separation cylinder 401 increases, thereby ensuring that the impurities are fully drawn out.

[0023] As a preferred embodiment of the present invention, Figure 2 , 5As shown in FIGS. 13 and 14, the grinding mechanism 600 with adjustable fineness includes a grinding outer cylinder 601, a grinding inner core 606, a material collecting barrel 604 and an adjustable transmission assembly. The grinding outer cylinder 601 and the grinding inner core 606 are coaxially arranged, and the grinding inner core 606 is arranged in the grinding outer cylinder 601. An upper end cover 603 is detachably connected to the upper end of the grinding outer cylinder 601, and the middle part of the upper end cover 603 protrudes upward. The material collecting barrel 604 is coaxially constructed at the center of the upper end cover 603. The lower end of each of the above-mentioned transfer tubes 500 is connected to the material collecting barrel 604, and the grinding inner core 606 is rotatably connected to the material collecting barrel 604 through the adjustable transmission assembly. The specific structure of the adjustable transmission assembly in this embodiment is that the adjustable transmission assembly includes a second vertical shaft 607, a plug-in rod 608, a second transmission wheel 612 and an adjusting screw 613. The plug rod 608 is coaxially constructed at the upper end of the grinding inner core 606, the second vertical shaft 607 is rotatably connected to the material collection barrel 604, and the axes of the second vertical shaft 607 and the material collection barrel 604 coincide. A plug slot 605 is constructed at the lower end of the second vertical shaft 607, the plug rod 608 is movably inserted in the plug slot 605, and the second transmission wheel 612 is coaxially assembled on the part of the second vertical shaft 607 extending out of the material collection barrel 604. The adjusting screw rod 613 is coaxially threadedly connected to the upper end of the second vertical shaft 607, the lower end of the adjusting screw rod 613 passes through the plug slot 605 and is rotatably connected to the upper end of the plug rod 608, and a locking nut 614 is threadedly connected to the adjusting screw rod 613. The diameter of the grinding outer cylinder 601 of this embodiment gradually decreases downward along the vertical direction, and the diameter of the grinding inner core 606 also gradually decreases downward along the vertical direction. A grinding area 611 is formed between the grinding outer cylinder 601 and the grinding inner core 606. A discharge joint 602 is constructed at the lower end of the grinding outer cylinder 601. A collection area 609 and a transition area 610 are formed in the collection cylinder 604 and the upper end cover 603, respectively, and the collection area 609, the transition area 610 and the grinding area 611 are interconnected. The working principle and advantage of this embodiment are: the rice enters the transition area 610 from the collection area 609 of this embodiment, and then enters the belt grinding area 611 through the transition area 610. At this time, the second transmission wheel 612 is driven to drive the grinding inner core 606 to rotate through the adjustable transmission component, so that the rice is gradually ground in the grinding area 611, and the ground product is discharged through the discharge joint 602. This embodiment can adjust the grinding fineness. Specifically, first loosen the locking nut 614 to release the lock on the adjusting screw 613, then rotate the adjusting screw 613 to drive the grinding inner core 606 to move in the vertical direction through the plug-in rod 608, and then adjust the grinding diameter of the grinding area 611 to achieve the purpose of adjusting the grinding fineness; after the adjustment is completed, tighten the locking nut 614.In order to prevent the heat generated by grinding from being unable to be quickly transferred and thus affecting the quality of the ground product, the present embodiment adopts the following measures: a cooling shell 615 is provided outside the grinding outer cylinder 601, and the cooling shell 615 is a structure formed by splicing two half shells, forming a cooling cavity 618 between the cooling shell 615 and the grinding outer cylinder 601, a cooling medium inlet pipe 616 is configured at the lower end of the cooling shell 615, and a cooling medium outlet pipe 617 is configured at the upper end of the cooling shell 615. The present embodiment achieves the purpose of taking away the heat generated by grinding through the cooling medium, thus avoiding affecting the quality of the product.

[0024] Finally, it should be noted that the above is only 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 can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An automated grinding device for rice processing, characterized in that: The invention comprises a plurality of external expansion type surface cleaning mechanisms (200) mounted on a fixed frame (100); a transmission mechanism (300) for driving each external expansion type surface cleaning mechanism (200) to move is installed between the fixed frame (100) and the external expansion type surface cleaning mechanisms (200); a suction type impurity separation mechanism (400) is installed at the lower end of each external expansion type surface cleaning mechanism (200); a discharge port of the suction type impurity separation mechanism (400) is connected to a fineness adjustable grinding mechanism (600) via a transfer tube (500); the external expansion type surface cleaning mechanism (200) is connected to a fineness adjustable grinding mechanism (600); 00) comprises a vertical outer cylinder (201) having a feed hopper (202) and a discharge hopper (203) respectively constructed at the upper and lower ends, the vertical outer cylinder (201) being mounted on a fixed frame (100), an outward expansion inner core (209) being coaxially arranged inside the vertical outer cylinder (201), the lower end of the outward expansion inner core (209) being connected to a transmission mechanism (300) via an adapter seat (207), and the lower end of the vertical outer cylinder (201) being rotatably connected to the adapter seat (207), and a plurality of material passing ports (208) being constructed on the adapter seat (207) and being connected to a suction-type impurity separation mechanism (400).

2. The automatic grinding equipment for rice processing according to claim 1, characterized in that: The external expansion inner core (209) has a hollow external expansion cavity (211), and a plurality of conducting channels (216) in communication with the external expansion cavity (211) are provided on the adapter seat (207). The conducting channels (216) are all in communication with the annular channel (213) on the adapter seat (207). An annular closing cover (205) is rotatably connected to the upper end of the annular channel (213). The annular closing cover (205) is connected to the vertical outer cylinder (201) via a fixing ear (206). A medium conducting pipe (219) in communication with the distribution sleeve (217) is constructed on the annular closing cover (205). The medium conducting pipe (219) is in communication with the annular channel (213), and a medium main pipe (218) is constructed on the distribution sleeve (217).

3. The automatic grinding equipment for rice processing according to claim 2, characterized in that: The transmission mechanism (300) comprises a first vertical shaft (301) rotatably mounted on a fixing frame (100), a first transmission wheel (302) and a transmission gear (303) being coaxially mounted on the first vertical shaft (301), an outer gear ring (304) being coaxially mounted on each adapter seat (207), each outer gear ring (304) being externally meshed with the transmission gear (303), and the distribution sleeve (217) being coaxially rotatably mounted on the first vertical shaft (301).

4. The automatic grinding equipment for rice processing according to claim 1, characterized in that: A first cleaning layer (204) is arranged on the inner circumferential wall of the vertical outer cylinder (201), and a second cleaning layer (212) is arranged on the outer circumferential wall of the externally expanded inner core (209), and an annular cleaning area (220) is formed between the first cleaning layer (204) and the second cleaning layer (212); a material guide head (210) is constructed at the upper end of the externally expanded inner core (209), and the radial length of the material guide head (210) gradually decreases in the vertical upward direction, forming a material guide area (214) between the material guide head (210) and the vertical outer cylinder (201), and forming a material discharge area (215) between the lower part of the externally expanded inner core (209) and the discharge hopper (203).

5. The automatic grinding equipment for rice processing according to claim 1, characterized in that: The suction-type impurity separation mechanism (400) comprises a separation cylinder (401) whose diameter gradually decreases vertically downward; a discharge joint (402) connected to a transfer tube (500) is configured at the lower end of the separation cylinder (401); an impurity suction pipe (404) extending obliquely upward is connected to the outer peripheral wall of the separation cylinder (401); the impurity suction pipe (404) is connected to the separation cylinder (401) and a converging cylinder (405); a suction main pipe (406) is configured on the converging cylinder (405); the separation cylinder (401) is mounted on a conical sleeve (407); and a mounting seat (408) is configured on the conical sleeve (407).

6. The automatic grinding equipment for rice processing according to claim 5, characterized in that: A plurality of spiral material distribution blades (403) are constructed on the inner wall of the separation cylinder (401), and the spiral material distribution blades (403) are evenly arranged along the circumference of the separation cylinder (401).

7. The automatic grinding equipment for rice processing according to claim 1, characterized in that: The fineness adjustable grinding mechanism (600) comprises a coaxially arranged grinding outer cylinder (601) and a grinding inner core (606); an upper end cover (603) is detachably connected to the upper end of the grinding outer cylinder (601); a material collecting cylinder (604) is constructed at the center of the upper end cover (603); each transfer tube (500) is connected to the material collecting cylinder (604); and the grinding inner core (606) is rotationally connected to the material collecting cylinder (604) via an adjustable transmission component.

8. The automatic grinding equipment for rice processing according to claim 7, characterized in that: The adjustable transmission assembly comprises a plug-in rod (608) coaxially constructed on the upper end of the grinding inner core (606); a second vertical shaft (607) is coaxially rotatably connected to the material collection barrel (604); a plug-in slot (605) is constructed at the lower end of the second vertical shaft (607); the plug-in rod (608) is movably inserted into the plug-in slot (605); a second transmission wheel (612) is coaxially mounted on the portion of the second vertical shaft (607) extending out of the material collection barrel (604); an adjusting screw rod (613) is coaxially threadedly connected to the upper end of the second vertical shaft (607); the lower end of the adjusting screw rod (613) passes through the plug-in slot (605) and is rotatably connected to the upper end of the plug-in rod (608); and a locking nut (614) is threadedly connected to the adjusting screw rod (613).

9. The automatic grinding equipment for rice processing according to claim 7, characterized in that: The diameter of the grinding outer cylinder (601) gradually decreases vertically downward, and the diameter of the grinding inner core (606) also gradually decreases vertically downward. A grinding area (611) is formed between the grinding outer cylinder (601) and the grinding inner core (606). A discharge joint (602) is configured at the lower end of the grinding outer cylinder (601). A material collection area (609) and a transition area (610) are respectively formed in the material collection cylinder (604) and the upper end cover (603). The material collection area (609), the transition area (610) and the grinding area (611) are interconnected. A cooling shell (615) is provided on the outer shell of the grinding outer cylinder (601). A cooling cavity (618) is formed between the cooling shell (615) and the grinding outer cylinder (601). A cooling medium inlet pipe (616) and a cooling medium outlet pipe (617) are respectively configured at the lower end and the upper end of the cooling shell (615).

Images