Multi-stage rice grinding machine

Abstract

The invention relates to the technical field of grinding devices, discloses a multi-stage rice grinding machine, and solves the problems that in the grinding process, rice is not subjected to graded grinding, so that the desired higher precision is difficult to achieve in the one-time grinding process, the rice cannot be ground into different particle sizes, and the use range is limited. The driving mechanism drives the pretreatment mechanism to operate through a first transmission belt, rice is subjected to primary coarse grinding, then the rice falls into the driving mechanism below and is conveyed, the rice is forced to be extruded to the position between a grinding piece and the adjusting mechanism, and the pretreatment mechanism drives a transmission piece to rotate through a second transmission belt in the operation process; the transmission part drives the grinding part and the adjusting mechanism to rotate in the opposite directions, then the rice between the grinding part and the adjusting mechanism is subjected to secondary fine grinding, the abutting degree between the grinding part and the adjusting mechanism can be adjusted through rotation of the adjusting mechanism, and therefore grinding of the rice with different precisions is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a multi-stage rice grinder. Background Art

[0002] Rice is one of the staple foods of the people. It has extremely high nutritional value and edible value. With the advancement of science and technology, rice is not only used as a staple food, but also processed into other types of products. In the field of food processing, people often grind rice into powder to make glutinous rice flour. Glutinous rice flour is the raw material for making steamed cakes, rice paste, rice noodles and many other delicacies. It has many advantages such as rich nutrition and good taste. During the processing, a rice grinder is needed to grind the rice. However, most traditional grinding equipment does not have the concept of graded grinding, and does not set up multiple grinding units with different precision requirements according to the needs of different stages in the rice grinding process. As a result, it is difficult to achieve the desired high precision in one grinding process.

[0003] For example, the existing Chinese patent with publication number CN220546994U discloses a grinder with uniform grinding. The driving shaft of the motor drives the rotating rod to rotate, and the rotating rotating rod drives the rotating groove adapted thereto to rotate, thereby driving the grinding block to rotate. The rotating grinding block passes through a fixing member provided on the top surface, and the fixing member moves in a lifting groove in the annular member through a connecting rod. The structure of the lifting groove enables the entire grinding block to perform frequency lifting and rotation in the inner cavity. The grinding block and the tank body are ground and vibrated by the protrusions, and the rice flour grinding is completed with the cooperation of the inclined surface of the bottom surface of the tank body and the inclined surface of the bottom surface of the grinding block.

[0004] On the one hand, the grinder does not grade the rice during the grinding process, which makes it difficult to achieve the desired high precision in one grinding process. On the other hand, the rice cannot be ground into different particle sizes, which reduces the scope of use of the grinding device and has poor practicality.

[0005] Therefore, a multi-stage rice grinding machine is needed. Summary of the Invention

[0006] In order to solve all or part of the above-mentioned problems, the present invention aims to provide a multi-stage rice grinder to solve the problem that the grinding devices proposed in the above-mentioned reference documents do not perform graded grinding of rice during the grinding process, and thus it is difficult to achieve the desired high precision in a single grinding process. In addition, the rice cannot be ground into different particle sizes, which limits the scope of use of the device and thus has poor practicality.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-stage rice grinder, comprising a grinding housing, a multi-stage grinding assembly disposed inside the grinding housing, the multi-stage grinding assembly comprising a first transmission belt, the lower portion of the first transmission belt being sleeved on the outer side of a driving mechanism, the upper portion of the first transmission belt being sleeved on the outer side of one end of a pre-processing mechanism, a grinding member rotatably connected to the grinding housing being sleeved on the outer side of the driving mechanism, an adjustment mechanism being provided on the inner side of the grinding member, the adjustment mechanism being threadedly connected to the driving mechanism, a second transmission belt being sleeved on the outer side of the other end of the pre-processing mechanism, a transmission member being sleeved on the end of the second transmission belt away from the pre-processing mechanism, the transmission member being meshedly connected to the grinding member;

[0008] The driving mechanism drives the pretreatment mechanism to operate through the first transmission belt, and performs a first-level coarse grinding on the rice to ensure that the subsequent fine grinding is completed in one go. At this time, the coarsely ground rice falls into the driving mechanism below and is transported, forcing the rice to be squeezed between the grinding member and the adjusting mechanism. During operation, the pretreatment mechanism drives the transmission member to rotate through the second transmission belt, and the transmission member drives the grinding member and the adjusting mechanism to rotate in opposite directions, thereby performing a second-level fine grinding on the rice between the grinding member and the adjusting mechanism. Since the rice has been coarsely ground once before, the desired higher precision can be achieved in one fine grinding. Before the device is used, the degree of contact between the grinding member and the adjusting mechanism can be adjusted by rotating the adjusting mechanism, thereby achieving grinding of rice with different precisions, greatly improving the range of use of the grinding device during use, and thus having strong practicality.

[0009] Furthermore, the grinding machine housing includes a feeding cylinder, a grinding box is fixedly installed above the feeding cylinder, and the grinding box is connected to the feeding cylinder;

[0010] The driving mechanism includes a servo motor and a fixing member located outside the servo motor and fixedly connected. The fixing member is fixedly connected to the feeding cylinder. The output end of the servo motor passes through the feeding cylinder and is fixedly installed with an auger.

[0011] The pretreatment mechanism includes grinding roller 1 and grinding roller 2 that pass through the grinding box and are rotatably connected, and a driven member that is rotatably connected to the outer surface of the grinding box. A set of transmission belts is provided at one end of the auger and grinding roller 1 and is rotatably connected to the outer side of grinding roller 2 and the driven member. The auger is driven to rotate counterclockwise by a servo motor, and the auger drives the driven member to rotate counterclockwise through the transmission belt 1. The driven member drives the grinding roller 2 to rotate clockwise through the transmission belt 1, and the grinding roller 2 drives the grinding roller 1 to rotate counterclockwise through the transmission belt 1, so that the grinding roller 1 and the grinding roller 2 perform a first-level coarse grinding on the rice that falls between the two, and then the coarsely ground rice falls from the grinding box into the feed barrel and is transported by the auger.

[0012] Furthermore, the transmission member includes a fixed rod and a transmission disc located at one end of the fixed rod and fixedly connected, the other end of the fixed rod is fixedly mounted with a first gear, and a second transmission belt is sleeved on the other end of the first grinding roller and the outer side of the transmission disc and is rotatably connected;

[0013] The grinding element includes a guide ring plate rotatably connected to the inner wall surface of the feeding cylinder, a grinding cone plate is fixedly mounted on one end of the guide ring plate, a second gear is fixedly mounted on the outer side of the grinding cone plate, and the second gear is meshed with the first gear;

[0014] The adjustment mechanism includes a grinding cone ring that is sleeved on the outside of the auger and movably connected. The grinding cone ring fits with the grinding cone plate. The auger continuously transports the coarsely ground rice to between the auger and the guide ring plate. As the amount of rice increases, it is forced to be squeezed along the guide ring plate to between the grinding cone plate and the grinding cone ring. At the same time, the auger drives the grinding cone ring to rotate counterclockwise, and the grinding roller 1 drives the transmission plate to rotate counterclockwise through the transmission belt 2. The transmission plate drives the fixed rod and gear 1 to rotate counterclockwise. Because gear 2 is in meshing state with gear 1, gear 1 drives the grinding cone plate to rotate clockwise in the opposite direction to the grinding cone ring, thereby performing secondary high-efficiency fine grinding on the rice between the two.

[0015] Furthermore, a threaded groove is provided on the outer surface of the auger, and a plurality of telescopic rods are fixedly installed at one end of the grinding cone ring, and a threaded ring is fixedly installed at one end of the telescopic rod away from the grinding cone ring, and the threaded ring is threadedly connected to the auger through the threaded groove. A spring is provided on the outer side of the telescopic rod, one end of the spring is fixedly connected to the grinding cone ring, and the other end of the spring is fixedly connected to the threaded ring. In the initial state, due to the setting of the spring, the grinding cone ring and the grinding cone plate are tightly pressed against each other. When it is necessary to adjust the secondary grinding accuracy of the rice, the threaded ring is rotated in different directions, so that the threaded ring moves left and right horizontally along the threaded groove on the outside of the auger, and then the compression deformation degree of the spring is adjusted, thereby adjusting the size of the pressing force between the grinding cone ring and the grinding cone plate. On the one hand, it will not make the rice unable to pass through, and on the other hand, the grinding accuracy can be adjusted according to processing requirements, thereby greatly improving the practicability of the device.

[0016] Furthermore, a fixing ring is fixedly installed on one end of the auger away from the servo motor, a plurality of slots are opened on the outer surface of the fixing ring, and an elastic member is fixedly installed on the outer side of the threaded ring;

[0017] When the cam is in the closed position, the L-plate is moved back into the slot and the cam is moved back into the slot, thereby making the cam in the closed position move back to the slot.

[0018] Furthermore, a feed baffle is fixedly installed on the upper end of the grinding box. Through the setting of the feed baffle, on the one hand, the rice can be accurately dropped between the grinding roller 1 and the grinding roller 2, and on the other hand, it can effectively prevent the rice from being scattered during the feeding process, thereby avoiding waste.

[0019] Furthermore, a connecting piece is fixedly installed above the feeding cylinder, and a fixing rod passes through the connecting piece and is rotatably connected. Through the setting of the connecting piece, the stability of the transmission part during operation is effectively improved.

[0020] Furthermore, a collecting box is fixedly installed at one end of the feeding cylinder, a discharge pipe is fixedly installed at the lower end of the collecting box, a valve is rotatably installed inside the discharge pipe, a fixed rod passes through the collecting box and is rotatably connected, and the arrangement of the collecting box effectively prevents rice noodles from flying. When discharge is required, the valve is rotated and the rice noodles can be discharged through the discharge pipe.

[0021] Furthermore, a bracket is fixedly installed below the feeding cylinder. Through the setting of the bracket, the discharge pipe is lifted away from the ground, which is convenient for the subsequent reception of rice noodles.

[0022] Furthermore, a door is hingedly installed at one end of the collection box. The threaded ring can be rotated by opening the door, which is convenient for personnel to operate. In addition, closing the door can prevent rice noodles from flying and prevent external magazines from entering.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention proposes a multi-stage rice grinding machine, in which a driving mechanism drives a pretreatment mechanism to operate via a first transmission belt, performs a first-stage coarse grinding on the rice to ensure that the subsequent fine grinding is completed in one go. At this time, the coarsely ground rice falls into the driving mechanism below and is transported, forcing the rice to be squeezed between the grinding member and the adjusting mechanism. During operation, the pretreatment mechanism drives the transmission member to rotate via a second transmission belt, and the transmission member in turn drives the grinding member and the adjusting mechanism to rotate in opposite directions, thereby performing a second-stage fine grinding on the rice between the grinding member and the adjusting mechanism. Since the rice has been coarsely ground once before, the desired higher precision can be achieved in one fine grinding. Before the device is used, the degree of contact between the grinding member and the adjusting mechanism can be adjusted by rotating the adjusting mechanism, thereby achieving grinding of rice with different precisions, greatly improving the use range of the grinding device during use, and thus having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the grinding machine housing structure of the present invention;

[0027] Figure 3 This is a schematic structural diagram of the multi-stage grinding assembly of the present invention;

[0028] Figure 4 This is a schematic structural diagram of the multi-stage grinding assembly of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the driving mechanism and the regulating mechanism of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the pretreatment mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the transmission structure of the present invention;

[0032] Figure 8 Schematic diagram of the grinding element structure of the present invention;

[0033] Figure 9 It is a schematic diagram of the elastic member structure of the present invention.

[0034] Figure: 1. Grinding machine housing; 11. Feed cylinder; 12. Bracket; 13. Grinding box; 14. Feed baffle; 15. Connector; 16. Collection box; 17. Box door; 18. Discharge pipe; 19. Valve; 2. Multi-stage grinding assembly; 21. Drive mechanism; 211. Servo motor; 212. Fixing member; 213. Auger; 214. Threaded groove; 215. Fixing ring; 216. Slot; 22. Drive belt 1; 23. Pretreatment mechanism; 231. Grinding roller 1; 232. Grinding Roller 2; 233, follower; 24, transmission belt 2; 25, transmission member; 251, transmission plate; 252, fixed rod; 253, gear 1; 26, adjustment mechanism; 261, threaded ring; 262, telescopic rod; 263, grinding cone ring; 264, spring; 27, elastic member; 271, cavity rod; 272, L-plate; 273, rotating rod; 274, fixed block; 275, torsion spring; 28, grinding member; 281, guide ring plate; 282, grinding cone plate; 283, gear 2. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0037] Combine Figure 1 、 Figure 3-4 A multi-stage rice grinder includes a grinding machine housing 1, a multi-stage grinding assembly 2 is arranged inside the grinding machine housing 1, and the multi-stage grinding assembly 2 includes a transmission belt 1 22. The lower part of the transmission belt 1 22 is sleeved on the outside of a driving mechanism 21, and the upper part of the transmission belt 1 22 is sleeved on the outside of one end of a pre-processing mechanism 23. The outside of the driving mechanism 21 is sleeved with a grinding member 28 that is rotatably connected to the grinding machine housing 1. An adjustment mechanism 26 is provided on the inner side of the grinding member 28, and the adjustment mechanism 26 is threadedly connected to the driving mechanism 21. A transmission belt 24 is sleeved on the outside of the other end of the pre-processing mechanism 23. A transmission member 25 is sleeved on the end of the transmission belt 24 away from the pre-processing mechanism 23. The transmission member 25 is meshed with the grinding member 28.

[0038] The driving mechanism 21 drives the pre-treatment mechanism 23 via the transmission belt 1 22 to perform a first-stage coarse grinding of the rice to ensure that the subsequent fine grinding is completed in one go. At this time, the coarsely ground rice falls into the driving mechanism 21 below and is transported, forcing the rice to be squeezed between the grinding member 28 and the adjusting mechanism 26. During operation, the pre-treatment mechanism 23 drives the transmission member 25 to rotate via the transmission belt 24. The transmission member 25 in turn drives the grinding member 28 and the adjusting mechanism 26 to rotate in opposite directions, thereby performing a second-stage fine grinding of the rice between the grinding member 28 and the adjusting mechanism 26. Since the rice has been coarsely ground once before, the fine grinding can achieve the desired higher precision in one go. Before the device is used, the degree of contact between the grinding member 28 and the adjusting mechanism 26 can be adjusted by rotating the adjusting mechanism 26, thereby achieving grinding of rice with different precisions, greatly improving the range of use of the grinding device during use, and thus having strong practicality.

[0039] Combine Figure 2 、 Figure 5-6 The grinding machine housing 1 includes a feeding cylinder 11, and a grinding box 13 is fixedly installed above the feeding cylinder 11. The grinding box 13 is connected to the feeding cylinder 11;

[0040] The driving mechanism 21 includes a servo motor 211 and a fixing member 212 located outside the servo motor 211 and fixedly connected. The fixing member 212 is fixedly connected to the feeding cylinder 11. The output end of the servo motor 211 passes through the feeding cylinder 11 and is fixedly mounted with an auger 213.

[0041] The pretreatment mechanism 23 includes a grinding roller 1 231 and a grinding roller 2 232 that pass through the grinding box 13 and are rotatably connected, and a driven member 233 that is rotatably connected to the outer surface of the grinding box 13. The transmission belt 1 22 is sleeved on the auger 213 and one end of the grinding roller 1 231 and is rotatably connected to the outer side of the grinding roller 2 232 and the driven member 233. The auger 213 is driven counterclockwise by the servo motor 211. The auger 213 drives the driven member 233 to rotate counterclockwise through the transmission belt 1 22. The driven member 233 drives the grinding roller 2 232 to rotate clockwise through the transmission belt 1 22. The grinding roller 2 232 drives the grinding roller 1 231 to rotate counterclockwise through the transmission belt 1 22, so that the grinding roller 1 231 and the grinding roller 2 232 perform a first-level coarse grinding on the rice falling between the two. Then the coarsely ground rice falls from the grinding box 13 into the feed barrel 11 and is transported by the auger 213.

[0042] Combine Figure 5 、 Figure 7-8The transmission member 25 includes a fixed rod 252 and a transmission disc 251 located at one end of the fixed rod 252 and fixedly connected. A gear 1 253 is fixedly installed on the other end of the fixed rod 252. The transmission belt 24 is sleeved on the other end of the grinding roller 1 231 and the outer side of the transmission disc 251 and is rotatably connected.

[0043] The grinding member 28 includes a guide ring plate 281 rotatably connected to the inner wall surface of the feed barrel 11. A grinding cone plate 282 is fixedly mounted on one end of the guide ring plate 281. A second gear 283 is fixedly mounted on the outer side of the grinding cone plate 282. The second gear 283 is meshed with the first gear 253.

[0044] The adjusting mechanism 26 includes a grinding cone ring 263 which is sleeved on the outside of the auger 213 and movably connected. The grinding cone ring 263 is fitted with the grinding cone plate 282. The auger 213 continuously transports the coarsely ground rice to between the auger 213 and the guide ring plate 281. As more and more rice is forced to be squeezed along the guide ring plate 281 to between the grinding cone plate 282 and the grinding cone ring 263, the auger 213 drives the grinding cone ring 263 to rotate counterclockwise, and the grinding roller 1 231 drives the transmission disk 251 to rotate counterclockwise through the transmission belt 24. The transmission disk 251 in turn drives the fixed rod 252 and the gear 1 253 to rotate counterclockwise. Because the gear 2 283 is in meshing state with the gear 1 253, the gear 1 253 drives the grinding cone plate 282 to rotate clockwise in the opposite direction to the grinding cone ring 263, thereby performing secondary high-efficiency fine grinding on the rice between the two.

[0045] Combine Figure 5 The outer surface of the auger 213 is provided with a thread groove 214, and one end of the grinding cone ring 263 is fixedly installed with multiple telescopic rods 262. The end of the telescopic rod 262 away from the grinding cone ring 263 is fixedly installed with a threaded ring 261. The threaded ring 261 is threadedly connected to the auger 213 through the thread groove 214. A spring 264 is provided on the outer side of the telescopic rod 262. One end of the spring 264 is fixedly connected to the grinding cone ring 263, and the other end of the spring 264 is fixedly connected to the threaded ring 261. In the initial state, due to the setting of the spring 264, the grinding cone The ring 263 is pressed against the grinding cone plate 282. When the secondary grinding accuracy of the rice needs to be adjusted, the threaded ring 261 is rotated in different directions to make the threaded ring 261 move horizontally left and right along the threaded groove 214 outside the auger 213, thereby adjusting the degree of compression deformation of the spring 264, thereby adjusting the size of the pressing force between the grinding cone ring 263 and the grinding cone plate 282. On the one hand, it will not prevent the rice from passing through, and on the other hand, the grinding accuracy can be adjusted according to processing requirements, thereby greatly improving the practicality of the device.

[0046] Combine Figure 5 、 Figure 9A fixing ring 215 is fixedly mounted on one end of the auger 213 away from the servo motor 211. A plurality of slots 216 are formed on the outer surface of the fixing ring 215. An elastic member 27 is fixedly mounted on the outer side of the threaded ring 261.

[0047] The elastic member 27 includes a cavity rod 271 and an L-plate 272 located inside the cavity rod 271 and slidably connected. The L-plate 272 fits into the card slot 216. A rotating rod 273 is fixedly installed on both sides of the cavity rod 271. A fixed block 274 is rotatably installed on one end of the rotating rod 273 away from the cavity rod 271. The fixed block 274 is fixedly connected to the threaded ring 261. A torsion spring 275 is sleeved on the outer side of the rotating rod 273. One end of the torsion spring 275 is fixedly connected to the cavity rod 271, and the other end of the torsion spring 275 is fixedly connected to the fixed block 274. When the threaded ring 261 needs to be rotated, the cavity rod 271 is first rotated to rotate the rod 2 73 is rotated so that the L plate 272 is out of the slot 216. At this time, the threaded ring 261 can be rotated. After the rotation of the threaded ring 261 is completed, the control of the cavity rod 271 is released and the position of the L plate 272 inside the cavity rod 271 is adjusted. At this time, the torsion spring 275 drives the cavity rod 271 to reset, so that the L plate 272 fits with the slot 216 again, achieving rapid fixation and effectively preventing the vibration and other factors generated by the entire device during operation, which cause the threaded ring 261 to rotate. This ensures the consistency of the precision during the grinding process, avoids the uneven grinding precision, and improves the grinding effect.

[0048] Combine Figure 2 A feed baffle 14 is fixedly installed on the upper end of the grinding box 13. Through the setting of the feed baffle 14, on the one hand, the rice can be accurately dropped between the grinding roller 1 231 and the grinding roller 2 232, and on the other hand, it can effectively prevent the rice from being scattered during the feeding process, thereby avoiding waste.

[0049] Combine Figure 2 A connecting member 15 is fixedly installed above the feeding cylinder 11, and the fixing rod 252 passes through the connecting member 15 and is rotatably connected. Through the setting of the connecting member 15, the stability of the transmission member 25 during operation is effectively improved.

[0050] Combine Figure 2 A collecting box 16 is fixedly installed at one end of the feeding cylinder 11, and a discharge pipe 18 is fixedly installed at the lower end of the collecting box 16. A valve 19 is rotatably installed inside the discharge pipe 18. The fixed rod 252 passes through the collecting box 16 and is rotatably connected. The arrangement of the collecting box 16 effectively prevents the rice noodles from flying. When discharging is required, the rice noodles can be discharged through the discharge pipe 18 by rotating the valve 19.

[0051] Combine Figure 2A bracket 12 is fixedly installed below the feeding cylinder 11. Through the setting of the bracket 12, the discharge pipe 18 is lifted and away from the ground, which is convenient for the subsequent reception of rice noodles.

[0052] Combine Figure 2 One end of the collecting box 16 is hingedly provided with a door 17. By opening the door 17, the threaded ring 261 can be rotated, which is convenient for personnel operation. In addition, closing the door 17 can prevent the rice noodles from flying and prevent the entry of external magazines.

[0053] It should be noted that, in the description of this application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0054] Furthermore, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation and do not necessarily require or imply any actual relationship or order between such entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed or that are inherent to such process, method, article, or apparatus.

[0055] 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 multi-stage rice grinding machine, comprising a grinding machine housing (1), wherein a multi-stage grinding assembly (2) is provided inside the grinding machine housing (1), characterized in that: The multi-stage grinding assembly (2) includes a transmission belt (22), the lower portion of the transmission belt (22) is sleeved on the outer side of the driving mechanism (21), the upper portion of the transmission belt (22) is sleeved on the outer side of one end of the pre-processing mechanism (23), the outer side of the driving mechanism (21) is sleeved with a grinding member (28) rotatably connected to the grinding machine housing (1), the inner side of the grinding member (28) is provided with an adjustment mechanism (26), the adjustment mechanism (26) is threadedly connected to the driving mechanism (21), the outer side of the other end of the pre-processing mechanism (23) is sleeved with a transmission belt (24), the end of the transmission belt (24) away from the pre-processing mechanism (23) is sleeved with a transmission member (25), and the transmission member (25) is meshedly connected to the grinding member (28); The driving mechanism (21) drives the pre-treatment mechanism (23) to operate through the transmission belt 1 (22), and performs a first-stage rough grinding on the rice to ensure that the subsequent fine grinding is completed in one time. At this time, the coarsely ground rice falls into the driving mechanism (21) below and is transported, forcing the rice to be squeezed between the grinding member (28) and the adjustment mechanism (26). During the operation, the pre-treatment mechanism (23) drives the transmission member (25) to rotate through the transmission belt 2 (24). The transmission member (25) drives the grinding member (28) and the adjustment mechanism (26) to rotate in opposite directions, thereby performing a second-stage fine grinding on the rice between the grinding member (28) and the adjustment mechanism (26). Since the rice has been coarsely ground once before, the fine grinding can achieve the desired higher precision in one time. Moreover, before the device is used, the degree of contact between the grinding member (28) and the adjustment mechanism (26) can be adjusted by rotating the adjustment mechanism (26), thereby achieving grinding of rice with different precisions, greatly improving the use range of the grinding device when in use, and thus having strong practicality.

2. A multi-stage rice grinding machine according to claim 1, characterized in that: The grinding machine housing (1) comprises a feeding cylinder (11), a grinding box (13) is fixedly mounted above the feeding cylinder (11), and the grinding box (13) is connected to the feeding cylinder (11); The driving mechanism (21) includes a servo motor (211) and a fixing member (212) located outside the servo motor (211) and fixedly connected thereto. The fixing member (212) is fixedly connected to the feeding cylinder (11). The output end of the servo motor (211) passes through the feeding cylinder (11) and is fixedly mounted with an auger (213). The pretreatment mechanism (23) includes a grinding roller 1 (231) and a grinding roller 2 (232) that penetrate the grinding box (13) and are rotatably connected, and a driven member (233) that is rotatably connected to the outer surface of the grinding box (13). The transmission belt 1 (22) is sleeved on the auger (213) and one end of the grinding roller 1 (231) and is rotatably connected to the outer side of the grinding roller 2 (232) and the driven member (233).

3. A multi-stage rice grinding machine according to claim 1, characterized in that: The transmission member (25) includes a fixed rod (252) and a transmission disc (251) located at one end of the fixed rod (252) and fixedly connected thereto; a gear 1 (253) is fixedly mounted on the other end of the fixed rod (252); and a transmission belt 2 (24) is sleeved on the other end of the grinding roller 1 (231) and the outside of the transmission disc (251) and is rotatably connected thereto; The grinding member (28) includes a guide ring plate (281) rotatably connected to the inner wall surface of the feeding cylinder (11), a grinding cone plate (282) is fixedly mounted on one end of the guide ring plate (281), a second gear (283) is fixedly mounted on the outer side of the grinding cone plate (282), and the second gear (283) is meshedly connected with the first gear (253); The adjusting mechanism (26) comprises a grinding cone ring (263) which is sleeved on the outside of the auger (213) and movably connected, and the grinding cone ring (263) is matched with the grinding cone plate (282).

4. A multi-stage rice grinding machine according to claim 2, characterized in that: The outer surface of the auger (213) is provided with a thread groove (214), one end of the grinding cone ring (263) is fixedly mounted with a plurality of telescopic rods (262), one end of the telescopic rod (262) away from the grinding cone ring (263) is fixedly mounted with a threaded ring (261), the threaded ring (261) is threadedly connected to the auger (213) through the thread groove (214), the outer side of the telescopic rod (262) is provided with a spring (264), one end of the spring (264) is fixedly connected to the grinding cone ring (263), and the other end of the spring (264) is fixedly connected to the threaded ring (261).

5. The multi-stage rice grinding machine according to claim 1, wherein: A fixing ring (215) is fixedly mounted on one end of the auger (213) away from the servo motor (211), a plurality of slots (216) are provided on the outer surface of the fixing ring (215), and an elastic member (27) is fixedly mounted on the outer side of the threaded ring (261); The elastic member (27) includes a cavity rod (271) and an L-plate (272) located inside the cavity rod (271) and slidably connected thereto. The L-plate (272) fits in the slot (216). Rotating rods (273) are fixedly installed on both sides of the cavity rod (271). A fixed block (274) is rotatably installed on one end of the rotating rod (273) away from the cavity rod (271). The fixed block (274) is fixedly connected to the threaded ring (261). A torsion spring (275) is sleeved on the outer side of the rotating rod (273). One end of the torsion spring (275) is fixedly connected to the cavity rod (271), and the other end of the torsion spring (275) is fixedly connected to the fixed block (274).

6. A multi-stage rice grinding machine according to claim 2, characterized in that: A feed baffle (14) is fixedly mounted on the upper end of the grinding box (13).

7. A multi-stage rice grinding machine according to claim 2, characterized in that: A connecting piece (15) is fixedly installed above the feeding cylinder (11), and a fixing rod (252) passes through the connecting piece (15) and is rotatably connected thereto.

8. The multi-stage rice grinding machine according to claim 2, characterized in that: A collecting box (16) is fixedly mounted on one end of the feeding cylinder (11), a discharge pipe (18) is fixedly mounted on the lower end of the collecting box (16), a valve (19) is rotatably mounted inside the discharge pipe (18), and a fixing rod (252) passes through the collecting box (16) and is rotatably connected.

9. The multi-stage rice grinding machine according to claim 2, characterized in that: A bracket (12) is fixedly installed below the feeding cylinder (11).

10. The multi-stage rice grinding machine according to claim 8, characterized in that: One end of the collection box (16) is hingedly mounted with a box door (17).

Images