Intelligent shelling and screening system for selenium-enriched rice

Abstract

The invention belongs to the technical field of grain hulling, and particularly relates to an intelligent selenium-enriched rice hulling and screening system which comprises a hulling mechanism, feeding barrels are arranged at the upper end of the hulling mechanism in an array mode, a collecting bin is arranged at the lower end of the hulling mechanism, discharging openings are formed in the lower end of the collecting bin in an array mode, and a quick release mechanism is arranged on one side of the hulling mechanism. A motor is arranged on the other side of the shelling mechanism, a grinding roller is arranged in the shelling mechanism, and a cooling mechanism is arranged on one side of the grinding roller. According to the husking and screening system, the husking mechanism which is eccentrically arranged is arranged, the grinding roller is eccentrically arranged on the upper half portion of the shell, and the rice husking efficiency and the whole rice rate are effectively improved through variable-gap extrusion generated by centrifugal force and eccentric rotation; the air inlet hole in the lower end of the shell is matched with the negative-pressure adsorption hole to form a cyclone separation channel, light rice husks are discharged through negative-pressure adsorption, and rice grains fall in a graded mode through the screen and the discharging port.

Description

Technical Field

[0001] The present invention relates to the technical field of grain shelling, in particular to an intelligent shelling and screening system for selenium-enriched rice. Background Art

[0002] Selenium-enriched rice is a functional agricultural product rich in the trace element selenium. The accuracy of hulling and screening during its processing directly affects the product quality and nutritional value. Traditional rice hulling equipment generally has the following technical bottlenecks: 1. The traditional concentric milling structure uses a fixed gap to squeeze and hull rice. For selenium-rich rice, which has full grains and a tough shell, incomplete hulling or excessive milling can easily lead to excessive broken rice rate. In particular, selenium is mainly present on the surface of rice grains, and excessive milling can lead to selenium loss. 2. During the grinding process, the roller surface temperature easily rises to above 60°C, causing the rice grains to gelatinize and the selenium element to degrade. At the same time, the accumulation of rice husk debris affects the grinding accuracy. Traditional equipment requires frequent shutdowns for manual cleaning and equipment replacement. The single shutdown time is long, and the production capacity loss is significant.

[0003] In response to the above problems, the present invention proposes an intelligent selenium-rich rice shelling and screening system. Summary of the Invention

[0004] Based on the shelling, screening and maintenance technical problems of the existing shelling system, the present invention proposes an intelligent shelling and screening system for selenium-enriched rice.

[0005] The present invention proposes an intelligent shelling and screening system for selenium-rich rice, which includes a shelling mechanism, wherein the upper end array of the shelling mechanism is provided with a feed bucket, the lower end of the shelling mechanism is provided with a collection bin, the lower end array of the collection bin is provided with a discharge port, one side of the shelling mechanism is provided with a quick-release mechanism, the other side of the shelling mechanism is provided with a motor, the interior of the shelling mechanism is provided with a grinding roller, one side of the grinding roller is provided with a cooling mechanism, one side of the grinding roller is provided with a scraping mechanism, and the shelling mechanism includes an outer shell, and the surface array of the outer shell is provided with negative pressure adsorption holes.

[0006] The hulling mechanism is used to realize the action of hulling and screening the rice.

[0007] The quick-release mechanism is used to quickly install and remove the grinding roller.

[0008] The scraping mechanism is used to scrape off debris from the surface of the grinding roller.

[0009] The cooling mechanism is for cooling the grinding roller.

[0010] Preferably, a slide groove is provided on the inner wall of the shell, and air inlet holes are symmetrically arrayed on the lower end body of the shell, and a screen is provided on the inner wall of each air inlet hole, and a discharge port is provided at the lower end of the shell, and the discharge port is located between the two air inlet holes. An air inlet pipe is symmetrically provided on the outer side of the lower end of the shell, and the inner wall of each air inlet hole is fixedly connected to the inner wall of the air inlet pipe. A placement groove is symmetrically provided on the inner wall of the shell, and electric turntables are respectively provided at both ends of the inner wall of the placement groove, and a connecting column is fixedly connected between the rotating parts of the two electric turntables, and the outer surface of the connecting column is fixedly connected to the screen, and the two end surfaces of the screen are respectively fixedly connected to vibrators.

[0011] Preferably, the quick-release mechanism includes a cover arranged on the side of the shell, a bolt is provided on the surface of the cover, the surface of the bolt is threadedly connected to the side of the shell, a slot is provided at the upper end of the cover, and a fixing block adapted to the inner wall of the slot is provided at the upper end of the side of the shell.

[0012] Preferably, the scraping mechanism includes a motor 1 arranged on the other side of the shell, and bearings 1 are symmetrically provided at both ends of the shell, the inner rings of the two bearings 1 are fixedly connected to threaded rods, and the output shaft of the motor 1 is fixedly connected to one end of the threaded rod through a coupling, and a fixing groove is provided on the side of the shell, and the surface of the screw nut that moves the threaded rod is fixedly connected to a negative pressure adsorption tube, and one end of the screw nut on the surface of the threaded rod is fixedly connected to a receiving plate, and the upper surface of the receiving plate is fixedly connected to a scraper, and the surface of the scraper is fitted with the outer surface of the grinding roller, and the two ends of the fixed groove are respectively connected to rotating rods through bearings, and the surfaces of the two rotating rods are wrapped with plastic straps.

[0013] Preferably, one end of the negative pressure adsorption tube passes through the body of the strap, and the upper inner wall and the lower inner wall of the fixed groove are respectively provided with slots adapted to the two side surfaces of the strap, and the two side surfaces of the strap are respectively slidably connected to the inner walls of the slots, and the inner wall array of the fixed groove is rotatably connected to a gear, one of the gears being a combination of an upper and a lower gear, and the surfaces of the gears located at both ends are respectively fixedly connected to the upper ends of the rotating rod, and a chain is engaged with the surface of the gear, and the upper end of the rotating rod is fixed, and the upper end gear surface of the gear of the gear combination is engaged with gear 2, and the side of the outer shell is fixedly connected to motor 2, and the output shaft of motor 2 is fixedly connected to the surface of gear 2.

[0014] Preferably, the moving speed of the strap is the same as the moving speed of the screw nut of the threaded rod.

[0015] Preferably, the grinding roller has an opening and closing cavity inside, and a partition frame is provided on the inner wall of the cavity. The side of the partition frame is fixedly connected to the body of the grinding roller, and an array of connecting holes is provided at one end of the partition frame. A sealed bearing is embedded in one side of the outer shell, and an array of card slots are provided on the inner ring of the sealed bearing. A positioning pin is fixedly connected to the side of the grinding roller, and the outer surface of the positioning pin is adapted to the inner ring of the sealed bearing. The output shaft of the motor is provided on one side of the outer shell and is fixedly connected to the inner ring of the sealed bearing through a coupling.

[0016] Preferably, the cooling mechanism includes a fixed tube rotatably connected to the sealing body through a bearing, the outer surface of the fixed tube is fixedly sleeved with a second bearing, the inner ring of the second bearing is fixedly connected to the side of the grinding roller, the outer ring of the second bearing is symmetrically provided with protrusions adapted to the surface of the slide groove, the interior of the fixed tube is fixedly connected with a water inlet pipe and a water outlet pipe, the inner wall of the water inlet pipe and the inner wall of the water outlet pipe are fixedly connected to the inner wall of the cavity respectively, a double-channel rotary joint is provided on one side of the fixed tube, and the water outlet of the double-channel rotary joint is fixedly connected to the inner wall of the water inlet pipe and the inner wall of the water outlet pipe respectively.

[0017] Preferably, the grinding roller is located in the upper inner half of the housing.

[0018] Preferably, one end of the screen is in contact with the surface of the grinding roller.

[0019] The beneficial effects of the present invention are: 1. By setting up an eccentrically arranged hulling mechanism and eccentrically placing the grinding roller in the upper half of the shell, the centrifugal force and the variable gap extrusion generated by the eccentric rotation are used to effectively improve the rice hulling efficiency and the whole rice rate; the air inlet at the lower end of the shell cooperates with the negative pressure adsorption hole to form a cyclone separation channel, and the light rice husk is discharged through negative pressure adsorption, and the rice grains fall through the screen and the discharge port in grades.

[0020] 2. The modular design of the quick-release mechanism greatly shortens maintenance time. The slot-type positioning of the cover and the fixing block, combined with bolt tightening, greatly reduces the time required to disassemble the grinding roller. The guide structure of the second bearing and the slideway, combined with the quick-connect design of the dual-channel rotary joint, enables the simultaneous and rapid replacement of cooling pipes and transmission components, reducing equipment downtime and maintenance costs.

[0021] 3. By setting up a scraping and cooling mechanism, the synchronous drive of the screw nut and the belt in the scraping mechanism, and the real-time recovery of debris by the negative pressure adsorption tube, the high cleanliness of the grinding roller surface is maintained, and the wear and tear caused by debris accumulation and the reduction of rice grain quality are reduced; the cooling mechanism reduces the roller surface temperature through the double-channel rotary joint and the cavity flow channel, avoids rice grain gelatinization, and at the same time extends the service life of the grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an intelligent selenium-rich rice shelling and screening system proposed by the present invention; Figure 2 This is a cross-sectional view of the outer shell of a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 3 The invention proposes a selenium-rich rice intelligent shelling and screening system Figure 2 Enlarged view of point A in the middle; Figure 4 The invention proposes a selenium-rich rice intelligent shelling and screening system Figure 2 Enlarged view of point B in the middle; Figure 5 This is a diagram showing the location of negative pressure adsorption tubes in a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 6 This is a three-dimensional diagram of the cover of the intelligent shelling and screening system for selenium-rich rice proposed by the present invention; Figure 7 A three-dimensional diagram of the cooling mechanism of the intelligent selenium-rich rice shelling and screening system proposed by the present invention; Figure 8 The invention proposes a selenium-rich rice intelligent shelling and screening system Figure 7 Enlarged view of point C in the middle; Figure 9 This is a diagram showing the scraper position of a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 10 This is a diagram showing the locations of negative pressure adsorption holes in a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 11 This is a diagram showing the position of the rotating rods of the intelligent selenium-rich rice shelling and screening system proposed by the present invention; Figure 12 This is a diagram showing the connection between the rotating rod and gears of the intelligent selenium-rich rice shelling and screening system proposed by the present invention; Figure 13 This is a diagram showing the protruding positions of a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 14 A cross-sectional view of a grinding roller of a selenium-rich rice intelligent shelling and screening system proposed by the present invention; Figure 15 This is a structural diagram of the internal cavity of the grinding roller of the intelligent selenium-rich rice shelling and screening system proposed by the present invention.

[0023] In the figure: 1. Shelling mechanism; 10. Shell; 11. Slide; 12. Air inlet; 13. Discharge port; 14. Air inlet pipe; 15. Electric turntable; 16. Connecting column; 17. Screen; 18. Vibrator; 2. Feed barrel; 3. Collection bin; 4. Discharge port; 5. Quick release mechanism; 51. Cover; 52. Bolt; 53. Slot; 54. Fixing block; 6. Negative pressure adsorption hole; 7. Scraping mechanism; 71. Motor 1; 72. Bearing 1; 73. Threaded rod; 74, negative pressure adsorption tube; 75, strap; 76, receiving plate; 77, scraper; 78, gear; 79, chain; 710, motor 2; 711, rotating rod; 712, gear 2; 8, grinding roller; 80, protrusion; 81, cavity; 82, connecting hole; 83, sealed bearing; 84, positioning pin; 9, cooling mechanism; 91, fixing pipe; 92, water inlet pipe; 93, water outlet pipe; 94, bearing 2; 95, double-channel rotary joint. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figures 1-15 A selenium-rich rice intelligent shelling and screening system comprises a shelling mechanism 1, the upper end array of the shelling mechanism 1 is provided with a feeding bucket 2, the lower end of the shelling mechanism 1 is provided with a collecting bin 3, the lower end array of the collecting bin 3 is provided with a discharge port 4, one side of the shelling mechanism 1 is provided with a quick-release mechanism 5, the other side of the shelling mechanism 1 is provided with a motor, the interior of the shelling mechanism 1 is provided with a grinding roller 8, one side of the grinding roller 8 is provided with a cooling mechanism 9, one side of the grinding roller 8 is provided with a scraping mechanism 7, the shelling mechanism 1 comprises an outer shell 10, and the surface array of the outer shell 10 is provided with negative pressure adsorption holes 6.

[0026] The hulling mechanism 1 is for realizing the action of hulling and screening the rice.

[0027] The quick-release mechanism 5 is used to quickly install and remove the grinding roller 8 .

[0028] The scraping mechanism 7 is used to scrape off debris from the surface of the grinding roller 8 .

[0029] The cooling mechanism 9 is for cooling the grinding roller 8 .

[0030] In this embodiment, a slide groove 11 is provided on the inner wall of the shell 10, and air inlet holes 12 are symmetrically arranged in an array on the lower end body of the shell 10. A screen is provided on the inner wall of each air inlet hole 12, and a discharge port 13 is provided at the lower end of the shell 10. The discharge port 13 is located between the two air inlet holes 12, and an air inlet pipe 14 is symmetrically provided on the outer side of the lower end of the shell 10. The inner wall of each air inlet hole 12 is fixedly connected to the inner wall of the air inlet pipe 14, and a placement groove is symmetrically provided on the inner wall of the placement groove. Electric turntables 15 are respectively provided at both ends of the inner wall of the placement groove. A connecting column 16 is fixedly connected between the rotating parts of the two electric turntables 15, and a screen 17 is fixedly connected to the outer surface of the connecting column 16. Vibrators 18 are respectively fixedly connected to the two end surfaces of the screen 17, and one end of the screen 17 is in contact with the surface of the grinding roller 8.

[0031] Specifically, the screen 17 uses a 1.5mm pore size stainless steel wire mesh, which can intercept whole rice grains and allow rice husks to pass through; the negative pressure adsorption hole 6 generates a negative pressure of -8kPa through the Venturi tube to adsorb dust and rice husk powder with a particle size of less than 0.5mm; horizontal vibration causes the rice grains on the surface of the screen to accelerate the rice to pass through the screen 17.

[0032] In this embodiment, the quick-release mechanism 5 includes a cover 51 arranged on the side of the shell 10, and a bolt 52 is provided on the surface of the cover 51. The surface of the bolt 52 is threadedly connected to the side of the shell 10. A slot 53 is provided at the upper end of the cover 51, and a fixing block 54 adapted to the inner wall of the slot 53 is provided at the upper end of the side of the shell 10.

[0033] Specifically, the bolt 52 is made of M12 high-strength alloy steel and is equipped with a double-nut anti-loosening structure. The head of the bolt 52 is designed as a conical countersunk head. When inserted into the threaded hole of the shell 10, the position of the cover 51 can be further corrected to achieve secondary positioning and ensure sealing performance. The operator only needs to use an electric wrench to remove the bolt 52, and then the cover 51 can be pulled out along the direction of the slot 53, shortening the time for one person to complete the replacement of the grinding roller 8.

[0034] In this embodiment, the scraping mechanism 7 includes a motor 71 arranged on the other side of the shell 10, and bearings 72 are symmetrically provided at both ends of the shell 10. The inner rings of the two bearings 72 are fixedly connected with threaded rods 73, and the output shaft of the motor 71 is fixedly connected to one end of the threaded rod 73 through a coupling. A fixing groove is provided on the side of the shell 10, and the surface of the screw nut moving the threaded rod 73 is fixedly connected with a negative pressure adsorption tube 74, and one end of the screw nut on the surface of the threaded rod 73 is fixedly connected with a receiving plate 76, and the upper surface of the receiving plate 76 is fixedly connected with a scraper 77. The surface of the scraper 77 fits the outer surface of the grinding roller 8. The two ends of the fixed groove are rotatably connected with rotating rods 711 through bearings, and the surfaces of the two rotating rods 711 are wrapped with a plastic belt 75, which is used for negative pressure adsorption. One end of the tube 74 passes through the body of the strap 75, and the upper inner wall and the lower inner wall of the fixed groove are respectively provided with grooves that are adapted to the two side surfaces of the strap 75. The two side surfaces of the strap 75 are respectively slidably connected to the inner walls of the grooves. The inner wall array of the fixed groove is rotatably connected with a gear 78, one of which is a combination of upper and lower gears. The surfaces of the gears 78 at both ends are respectively fixedly connected to the upper end of the rotating rod 711, and the surface of the gear 78 is meshed with a chain 79. The upper end of the rotating rod 711 is fixed, and the upper end gear surface of the gear 78 of the gear combination is meshed with gear 2 712. The side of the housing 10 is fixedly connected to motor 2 710, and the output shaft of motor 2 710 is fixedly connected to the surface of gear 2 712; the moving speed of the strap 75 is the same as the moving speed of the screw nut of the threaded rod 73.

[0035] Specifically, motor 1 71 drives the threaded rod 73 to rotate, so that the screw nut drives the scraper 77 to move axially, and the moving speed is adjustable. The scraper 77 adopts an arc design, forming a fitting gap of 0.05-0.1mm with the surface of the grinding roller 8 to ensure effective scraping of adhered rice husk debris; motor 2 710 drives the combination gear 78 through gear 2 712, driving the chain 79 to make the rotating rods 711 at both ends rotate synchronously, realizing the tensioning and relaxation control of the belt 75. The belt 75 is made of polyamide. When the scraper 77 moves, the belt 75 always keeps the negative pressure adsorption tube 74 wrapped and moves synchronously to prevent rice and rice grains from being scattered to the outside; the inner diameter of the negative pressure adsorption tube 74 is 15mm, and the front end adopts a tapered design. When the air flow passes through, it generates a negative pressure of -6kPa, which can effectively adsorb debris with a particle size of ≥0.1mm. The rear end of the negative pressure adsorption tube 74 is connected to a pulse bag dust collector.

[0036] In this embodiment, a cavity 81 is opened and closed inside the grinding roller 8, and a partition frame is provided on the inner wall of the cavity 81. The side of the partition frame is fixedly connected to the body of the grinding roller 8, and a connecting hole 82 is provided in an array at one end of the partition frame. A sealed bearing 83 is embedded in one side of the outer shell 10, and a card groove is provided in the inner ring array of the sealed bearing 83. A positioning pin 84 is fixedly connected to the side of the grinding roller 8, and the outer surface of the positioning pin 84 is adapted to the inner ring of the sealed bearing 83. The output shaft of the motor is provided on one side of the outer shell 10 and is fixedly connected to the inner ring of the sealed bearing 83 through a coupling.

[0037] Specifically, the partition frame divides the cavity 81 into two. After the external cooling water enters through the water inlet pipe 92, it enters the other side of the cavity 81 through the connecting hole 82 from one side of the cavity 81, and then flows out from the water outlet pipe 93, realizing a water cooling cycle, thereby preventing the grinding roller 8 from gelatinizing the rice grains due to local overheating, thereby affecting the quality of the rice grains.

[0038] In this embodiment, the cooling mechanism 9 includes a fixed tube 91 rotatably connected to the cover 51 body through a bearing, and a second bearing 94 is fixedly sleeved on the outer surface of the fixed tube 91. The inner ring of the second bearing 94 is fixedly connected to the side of the grinding roller 8, and the outer ring of the second bearing 94 is symmetrically provided with protrusions 80 adapted to the surface of the slide groove 11. The interior of the fixed tube 91 is respectively fixedly connected to an inlet pipe 92 and an outlet pipe 93. The inner wall of the inlet pipe 92 and the inner wall of the outlet pipe 93 are respectively fixedly connected to the inner wall of the cavity 81. A double-channel rotary joint 95 is provided on one side of the fixed tube 91, and the water outlet of the double-channel rotary joint 95 is respectively fixedly connected to the inner wall of the inlet pipe 92 and the inner wall of the outlet pipe 93.

[0039] Specifically, the bearing between the fixed tube 91 and the cover 51 can effectively reduce the friction resistance of the fixed tube 91 when it rotates, ensuring its flexible rotation; the inner ring of the bearing 2 94 is tightly connected to the grinding roller 8, and the protrusion 80 of the outer ring is embedded in the groove 11 on the inner wall of the shell 10. This structure not only provides radial support for the grinding roller 8, but also limits its axial movement, ensuring that the grinding roller 8 Under high-speed rotation, the runout is controlled within 0.03mm to prevent the cooling system connection from loosening due to shaking; the water inlet pipe 92 and the water outlet pipe 93 are spirally wound inside the fixed pipe 91 to prevent the coolant from mixing with the return water. The water inlet pipe 92 transports the coolant, which absorbs heat through the channel of the cavity 81 of the grinding roller 8 and then flows back to the outside through the water outlet pipe 93, forming an efficient closed-loop cooling circuit. The dual-path rotary joint 95 adopts an end face mechanical seal structure. The dynamic ring is made of silicon carbide and the static ring is graphite. The sealing surface flatness reaches Ra0.2μm, which can withstand high-speed rotation. Its two independent paths are precisely connected to the water inlet pipe 92 and the water outlet pipe 93 to ensure stable delivery of the cooling medium.

[0040] In this embodiment, the grinding roller 8 is located in the upper half of the housing 10 .

[0041] Specifically, the grinding roller 8 keeps rotating and the shell 10 keeps stationary. Effectively, it is an eccentric rotation. The eccentric rotation causes the gap between the grinding roller 8 and the inner wall of the shell 10 to change periodically. When the rice passes through this area, it will be subjected to alternating extrusion force and shear force. When the gap is small, the strong extrusion force can effectively crush the rice husk; when the gap increases, the shear force can separate the rice husk and the rice grain. Compared with concentric rotation, the hulling efficiency and the whole rice rate are effectively improved; the centrifugal force generated by the eccentric rotation of the grinding roller 8 will cause the hulled mixture to move toward the inner wall of the shell 10. Combined with the airflow generated by the air inlet 12 at the lower end of the shell 10, light objects such as rice husks are blown to the upper negative pressure adsorption hole 6 for discharge, and the rice grains fall from the discharge port 13 located below through the screen 17 due to the action of gravity and airflow, achieving efficient separation and effectively improving the impurity removal rate.

[0042] Reference Figures 1-15 A method for using a selenium-rich rice intelligent shelling and screening system, the specific steps are as follows: Step 1: Before grinding the rice, the negative pressure adsorption hole 6, the air inlet hole 12 and the air inlet pipe 14 work first, and then the rice enters the shelling mechanism 1 through the feed barrel 2. At the same time, the motor drives the grinding roller 8 to rotate at high speed through the bearing. The eccentric rotation causes the gap between the grinding roller 8 and the inner wall of the shell 10 to change periodically. When the rice passes through this area, it will be subjected to alternating extrusion force and shear force. When the gap is small, the strong extrusion force can effectively crush the rice husk; when the gap increases, the shear force can peel off the rice husk and rice grains, and the peeled rice and rice grain mixture falls from between the grinding roller 8 and the shell 10. Combined with the airflow generated by the air inlet hole 12 at the lower end of the shell 10, the rice husk and other light objects are blown to the negative pressure adsorption hole 6 above and discharged, while the rice grains fall from the discharge port 13 located below through the screen 17 due to the action of gravity and airflow; Step 2: The temperature sensor installed on the grinding roller 8 monitors the roller surface temperature in real time. If the roller surface temperature exceeds a threshold, the external water supply pump is turned on, and the external water source flows through the water inlet pipe 92 through the dual-path rotary joint 95 and enters the cavity 81. The cooling water flows along the cavity 81 through the connecting hole 82 into the other half of the cavity 81 separated by the partition frame, and then flows out through the water outlet pipe 93. The scraper 77 moves back and forth along the roller surface to scrape off the debris on the roller surface. The scraped debris falls into the receiving plate 76. The negative pressure adsorption tube 74 absorbs and removes the debris in the receiving plate 76. The debris that does not fall into the receiving plate 76 is removed from the outer shell 10 under the joint action of the air inlet 12 and the negative pressure adsorption hole 6. Step 4: If the surface of the grinding roller 8 needs to be inspected or replaced after long-term use, remove the bolts 52, take off the cover 51, and remove the grinding roller 8 from the shell 10 through external equipment. The protrusion 80 fixed on the outer ring of the second bearing 94 slides out along the slide groove 11, and the electric turntable 15 rotates at the same time, so that one side of the screen 17 fits against the inner wall of the shell 10, making it easy to remove the roller.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A selenium-rich rice intelligent shelling and screening system, characterized by: The shelling mechanism (1) comprises a shelling mechanism (1), wherein the upper end array of the shelling mechanism (1) is provided with a feed barrel (2), the lower end of the shelling mechanism (1) is provided with a collection bin (3), the lower end array of the collection bin (3) is provided with a discharge port (4), a quick release mechanism (5) is provided on one side of the shelling mechanism (1), a motor is provided on the other side of the shelling mechanism (1), a grinding roller (8) is provided inside the shelling mechanism (1), a cooling mechanism (9) is provided on one side of the grinding roller (8), a scraping mechanism (7) is provided on one side of the grinding roller (8), and the shelling mechanism (1) comprises a shell (10), and a surface array of negative pressure adsorption holes (6) is provided on the surface of the shell (10); The hulling mechanism (1) is used to perform hulling and screening of rice; The quick-release mechanism (5) is used to quickly install and remove the grinding roller (8); The scraping mechanism (7) is used to scrape off debris from the surface of the grinding roller (8); The cooling mechanism (9) is used to cool the grinding roller (8).

2. A selenium-rich rice intelligent shelling and screening system according to claim 1, characterized in that: The inner wall of the shell (10) is provided with a slide groove (11), the lower end body of the shell (10) is provided with air inlet holes (12) in a symmetrical array, the inner wall of each air inlet hole (12) is provided with a screen, the lower end of the shell (10) is provided with a discharge port (13), the discharge port (13) is located between the two air inlet holes (12), the outer side of the lower end of the shell (10) is symmetrically provided with an air inlet pipe (14), the inner wall of each air inlet hole (12) is fixedly connected to the inner wall of the air inlet pipe (14), the inner wall of the shell (10) is symmetrically provided with a placement groove, the two ends of the inner wall of the placement groove are respectively provided with an electric turntable (15), a connecting column (16) is fixedly connected between the rotating parts of the two electric turntables (15), the outer surface of the connecting column (16) is fixedly connected with a screen (17), and the two end surfaces of the screen (17) are respectively fixedly connected with a vibrator (18).

3. A selenium-rich rice intelligent shelling and screening system according to claim 2, characterized in that: The quick-release mechanism (5) comprises a cover (51) arranged on the side of the housing (10), a bolt (52) being provided on the surface of the cover (51), the surface of the bolt (52) being threadedly connected to the side of the housing (10), a slot (53) being provided at the upper end of the cover (51), and a fixing block (54) being adapted to the inner wall of the slot (53) being provided at the upper end of the side of the housing (10).

4. A selenium-rich rice intelligent shelling and screening system according to claim 3, characterized in that: The scraping mechanism (7) includes a motor (71) arranged on the other side of the housing (10), bearings (72) are symmetrically arranged at both ends of the housing (10), the inner rings of the two bearings (72) are fixedly connected to threaded rods (73), the output shaft of the motor (71) is fixedly connected to one end of the threaded rod (73) through a coupling, a fixing groove is opened on the side of the housing (10), the surface of the screw nut moving the threaded rod (73) is fixedly connected to a negative pressure adsorption tube (74), one end of the screw nut on the surface of the threaded rod (73) is fixedly connected to a receiving plate (76), the upper surface of the receiving plate (76) is fixedly connected to a scraper (77), the surface of the scraper (77) is in contact with the outer surface of the grinding roller (8), the two ends of the fixing groove are respectively connected to rotating rods (711) through bearings, and the surfaces of the two rotating rods (711) are wrapped with a plastic material belt (75).

5. A selenium-rich rice intelligent shelling and screening system according to claim 4, characterized in that: One end of the negative pressure adsorption tube (74) passes through the body of the strap (75), and the upper inner wall and the lower inner wall of the fixed groove are respectively provided with slots adapted to the two side surfaces of the strap (75), and the two side surfaces of the strap (75) are respectively slidably connected to the inner walls of the slots, and the inner wall array of the fixed groove is rotatably connected to a gear (78), one of the gears (78) is a combination of upper and lower gears, and the surfaces of the gears (78) at both ends are respectively fixedly connected to the upper ends of the rotating rod (711), and the surface of the gear (78) is meshed with a chain (79), and the upper end of the rotating rod (711) is fixed, and the upper end gear surface of the gear (78) of the gear combination is meshed with gear 2 (712), and the side of the housing (10) is fixedly connected to motor 2 (710), and the output shaft of motor 2 (710) is fixedly connected to the surface of gear 2 (712).

6. A selenium-rich rice intelligent shelling and screening system according to claim 5, characterized in that: The moving speed of the strap (75) is the same as the moving speed of the screw nut of the threaded rod (73).

7. The intelligent selenium-enriched rice shelling and screening system according to claim 6, characterized in that: The grinding roller (8) has a cavity (81) opened and closed inside, and a partition frame is provided on the inner wall of the cavity (81). The side of the partition frame is fixedly connected to the body of the grinding roller (8), and a connecting hole (82) is provided in an array at one end of the partition frame. A sealed bearing (83) is embedded in one side of the housing (10), and a slot is provided in an array on the inner ring of the sealed bearing (83). A positioning pin (84) is fixedly connected to the side of the grinding roller (8), and the outer surface of the positioning pin (84) is adapted to the inner ring of the sealed bearing (83). The output shaft of the motor is provided on one side of the housing (10) and is fixedly connected to the inner ring of the sealed bearing (83) through a coupling.

8. The intelligent selenium-enriched rice shelling and screening system according to claim 7, characterized in that: The cooling mechanism (9) includes a fixed tube (91) rotatably connected to the cover (51) body through a bearing, the outer surface of the fixed tube (91) is fixedly sleeved with a second bearing (94), the inner ring of the second bearing (94) is fixedly connected to the side of the grinding roller (8), the outer ring of the second bearing (94) is symmetrically provided with protrusions (80) adapted to the surface of the slide groove (11), the interior of the fixed tube (91) is respectively fixedly connected with a water inlet pipe (92) and a water outlet pipe (93), the inner wall of the water inlet pipe (92) and the inner wall of the water outlet pipe (93) are respectively fixedly communicated with the inner wall of the cavity (81), and a double-channel rotary joint (95) is provided on one side of the fixed tube (91), and the water outlet of the double-channel rotary joint (95) is respectively fixedly communicated with the inner wall of the water inlet pipe (92) and the inner wall of the water outlet pipe (93).

9. The intelligent selenium-enriched rice shelling and screening system according to claim 8, characterized in that: The grinding roller (8) is located in the upper half of the housing (10).

10. The intelligent selenium-enriched rice shelling and screening system according to claim 9, characterized in that: One end of the screen (17) is in contact with the surface of the grinding roller (8).

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