A rice processing white rice grading and screening system and screening method

Abstract

The invention discloses a rice processing white rice grading and screening system, which belongs to the field of rice processing. The system comprises a first rotating shaft, a second rotating shaft and a third rotating shaft which are equidistantly penetrated and rotatably connected in sequence on one side of a machine body, the first rotating shaft extending to one end outside the machine body is sleeved with a first pulley in a slidable manner at intervals, the outer surfaces of one end of the first rotating shaft, the second rotating shaft and the third rotating shaft located in the machine body are all fixedly connected with a winding wheel, the ends of the first rotating shaft, the second rotating shaft and the third rotating shaft close to the first pulley are all fixedly connected with a rotating handle, and a locking mechanism is fixedly connected with a position of the outer surface of the machine body close to the rotating handle, so that a single screen can be replaced or multiple screens can be replaced at the same time, thereby saving the labor cost of replacing the screens, reducing the overall replacement time and improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the field of rice processing, and more particularly to a white rice grading and screening system and a screening method for rice processing. Background Art

[0002] Rice, also known as rice, is a food made from rice grains after cleaning, husking, milling, and finishing. Rice is one of the main foods for humans.

[0003] During the rice processing, due to the different sizes of rice particles, as well as the breakage and cracking of rice during the husking and milling process, the processed rice needs to be graded by a screening device to separate rice of different grades and qualities. The screening device in the prior art can only achieve one or two levels of screening at a time, and the strength of the screen holes and the firmness of the screen surface are poor, resulting in low screening efficiency.

[0004] To address this problem, Chinese Patent No.: CN212210236113.3 provides a rice processing white rice grading and screening system. The device screens the rice by setting holes on a rotating box and the sizes of the holes are designed to increase in sequence, and the screened rice is collected by a collecting box to obtain rice of different qualities.

[0005] However, it is inevitable that the machine will be damaged during use. If the screen is damaged, the device will not achieve the initial use effect. Therefore, it is necessary to consider the replacement of the screen. Large machines, especially longer machines, require more workers to replace the screen at the same time, and the replacement efficiency is low. In addition, the rice that has been screened tends to accumulate at the feeding port when entering the feeding port. The accumulation of rice at the feeding port may cause the rice to block the screening mechanism, making it difficult for the screening device to work. Therefore, there is a big problem.

[0006] Therefore, a rice processing white rice grading and screening system and screening method are proposed. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a rice processing white rice grading and screening system and screening method. By setting a rotating handle, a first rotating shaft, a second rotating shaft, a third rotating shaft, a winding wheel, a first pulley and a second pulley, it is possible to replace a single or multiple screens at the same time when a single or multiple screens are damaged, so that the machine can replace the new screen more quickly and keep the machine running normally.

[0008] By setting the vertical plate, rotating gear, rack, rotating rod and motor, it is possible to prevent excessive accumulation of rice on the side of the vertical plate and eventually fall into the next-level screening mechanism, thereby avoiding the possibility of the next-level rice screened out by graded screening being mixed with the previous-level rice.

[0009] To solve the above problems, the present invention adopts the following technical solutions.

[0010] A rice processing and white rice grading and screening system comprises a body, wherein a first rotating shaft, a second rotating shaft and a third rotating shaft are rotatably connected in sequence at equal intervals on one side of the body, a plurality of first pulleys are sleeved and slidably connected to one end of the first rotating shaft extending to the outside of the body, a second rotating shaft and a third rotating shaft are rotatably connected to the body at intervals, a position of the body below the first rotating shaft is rotatably connected to the second rotating shaft and the third rotating shaft, an outer surface of an end of the first rotating shaft, the second rotating shaft and the third rotating shaft located in the body are fixedly connected to a winding wheel, an end of the first rotating shaft, the second rotating shaft and the third rotating shaft close to the first pulley are fixedly connected to a rotating handle, a locking mechanism is fixedly connected to a position of the outer surface of the body close to the rotating handle, one end of each of the locking mechanisms is fixedly connected to an automatic locking mechanism, a plurality of support rails are fixedly connected to the inner surfaces of both sides of the body, a sliding groove is provided on one side of the support rail, a screen mesh slides in the sliding groove, and an end of the screen mesh close to the first rotating shaft is connected to the winding wheel through a rope.

[0011] Furthermore, the locking mechanism includes a locking gear fixedly connected to the outside of the body, the locking gear is sleeved on the outer surface of the first rotating shaft, the outer surface of the first rotating shaft is sleeved with a locking sleeve slidably connected, one end of the locking sleeve is fixedly connected to a spring, the other end of the spring is fixedly connected to the outer surface of the body, and a limiting groove is provided on the body near the first rotating shaft, a guide groove is provided in the limiting groove, and the guide groove is perpendicular to the limiting groove.

[0012] Furthermore, the automatic locking mechanism includes a locking block fixedly connected to the other end of the locking sleeve, a guide rod fixedly connected in the guide groove, one end of the guide rod extending into the limit groove is fixedly connected to the locking rod, the side of the locking rod close to the guide groove is fixedly connected to the bottom end of the guide groove through a spring and is slidably connected to the guide rod, the end of the locking rod away from the locking sleeve is fixedly connected to a push rod, and the other end of the push rod is close to the screen.

[0013] Furthermore, an incomplete gear is provided on the inner wall of the locking sleeve, the teeth of the incomplete gear close to the body are arc-shaped, the teeth of the locking gear close to the locking sleeve are arc-shaped, and the locking sleeve and the locking gear can mesh with each other.

[0014] Furthermore, the locking block is arc-shaped on one side close to the body, the locking rod is arc-shaped on one end close to the locking block, the screen is at the same height as the push rod, and the distance that the screen pushes the push rod to move is less than the depth of the limiting groove.

[0015] Furthermore, the outer surfaces of the first rotating shaft and the second rotating shaft are fixedly connected with a fixing pin, and the outer surfaces of one end of the second rotating shaft and the third rotating shaft extending to the outside of the machine body are both sleeved with a second pulley in a sliding connection, the second pulley is connected to the first pulley by a V-belt, and the first pulley and the second pulley are provided with a fixing groove near the fixing pin, and the width of the fixing groove is greater than the width of the fixing pin.

[0016] Furthermore, a plurality of blanking plates are fixedly connected to the inner wall of the machine body and at a position below the support rail, each of which is fixedly connected to a fixed shaft at a center position below the blanking plate, and each fixed shaft is rotatably connected to a rotating gear at one end away from the blanking plate. A rotating rod is rotatably connected to one side of the machine body, and an end of the rotating rod away from the machine body is fixedly connected to a third pulley and a fourth pulley. Two racks are slidably connected to positions corresponding to the rotating rod on both sides of the inner wall of the machine body, and each of the racks is meshed with the rotating gear. Two ends of each of the blanking plates are slidably connected to a vertical plate, and one side of the rack close to the vertical plate is hinged to the vertical plate, and a motor is fixedly connected to the outer wall of the machine body at a position close to the rotating rod, and the output end of the motor is connected to the third pulley through a V-belt, and the fourth pulley is connected to a sweeping mechanism through a V-belt. When the sweeping mechanism moves, it triggers a locking mechanism, and the locking mechanism locks the screen to prevent the screen from falling.

[0017] Furthermore, the sweeping mechanism includes a plurality of limit blocks fixed at both ends of the inner wall of the machine body, a limit frame is slidably connected between the limit blocks, a "mouth"-shaped groove is opened in the limit frame, a sliding plate is slidably connected in the "mouth"-shaped groove, a "gear" column is fixedly connected to the side of the sliding plate close to the rotating rod, arc blocks are fixedly connected to both ends of the sliding plate, a connecting rod is rotatably connected through the outer side of the machine body, a fourth pulley is fixedly connected to the end of the connecting rod away from the machine body, a connecting gear is fixedly connected to the end of the connecting rod extending to the inner side of the machine body, and the connecting gear is meshed with the "gear" column.

[0018] The outer surface of the rotating rod is provided with an annular groove with the ends connected. One end of the rack close to the rotating rod is fixedly connected to a connecting rod. One end of the connecting rod close to the rotating rod is rotatably connected to a rotating ball. The rotating ball is located in the annular groove and is slidably connected to the annular groove.

[0019] Furthermore, the locking mechanism includes a first slide groove opened at one end of the support rail near the blanking plate, the support rail is provided with a second slide groove opened at one end of the support rail near the blanking plate, the second slide groove is vertically arranged with the first slide groove and communicated with the first slide groove, a first locking block is slidably connected in the first slide groove, the first locking block is connected to the bottom end of the first slide groove by a spring, a second locking block is slidably connected in the second slide groove, the second locking block is arranged in an L shape, and the first locking block and the second locking block are fixedly connected to the bottom end of the second slide groove by a spring.

[0020] A rice processing white rice grading and screening method comprises the following steps:

[0021] S1: First, according to the damage of the screen, connect the new screen to the winding wheel through a rope, and move the pulley to the corresponding rotating shaft for fixing.

[0022] S2: Turn the rotating handle, the rotating handle drives the corresponding rotating shaft to rotate, the rotating shaft drives the winding wheel to rotate, or one of the rotating shafts drives the other rotating shafts to rotate, and the other rotating shafts drive another winding wheel to rotate, thereby moving a single or multiple new screens to the corresponding positions.

[0023] S3: When the new screen moves to the corresponding position, it will touch the automatic locking mechanism, and the automatic locking mechanism will be disengaged from the locking mechanism, and the locking mechanism will fix the corresponding rotating shaft.

[0024] S4: Start the motor, which drives the two vertical plates to move relative to each other through a series of transmission structures, thereby pushing the rice piled on the sides of the vertical plates to a relatively middle position.

[0025] S5: The rotation of the rotating rod drives the fourth pulley to rotate, and the rotation of the fourth pulley drives the sweeping mechanism to move, so that the rice pushed to the relatively middle position is swept down to the position of the discharge port outlet, thereby preventing the rice located at the relatively middle position from being accumulated again on the side of the vertical plate during the falling process.

[0026] S6: The sweeping mechanism moves and touches the locking mechanism, and the locking mechanism moves to block the tail of the screen to prevent the screen from falling during the operation of the device.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention drives the winding wheel to rotate by means of a rotating handle which drives a series of transmission structures. The rotation of the winding wheel drives the screen to move through the rope, thereby saving the labor cost of replacing the screen and reducing the overall replacement time when multiple screens are damaged. This solves the problem that large machines, especially longer machines, require more workers to replace the screens at the same time, resulting in low replacement efficiency.

[0029] (2) The present invention provides a locking mechanism and an automatic locking mechanism. During the process of replacing the screen, the screen will touch the automatic locking mechanism, causing the automatic locking mechanism to disengage from the locking mechanism, so that the locking mechanism will lock the corresponding rotating shaft, thereby locking the screen accordingly, thereby avoiding the possibility of the screen falling during the operation of the machine.

[0030] (3) The present invention provides a motor, and the motor drives a series of transmission structures to drive the two vertical plates to move toward each other. The two vertical plates move toward each other and drive the rice accumulated on the sides of the vertical plates to move to a relatively middle position, thereby solving the problem of rice accumulation at the drop-out port, which may cause the rice to accumulate in the screening mechanism and fall into the next-level screening mechanism, thereby enabling the machine to work normally.

[0031] (4) The present invention uses a sweeping mechanism to sweep the rice pushed to the middle position to the material drop outlet, thereby solving the problem that the rice moves to the side of the vertical plate again during the process of falling on the material drop plate and re-accumulates at a position relatively below the vertical plate, further ensuring that the machine can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 It is a side perspective cross-sectional view of the present invention;

[0034] Figure 3 It is a side perspective cross-sectional view of the machine body in the present invention;

[0035] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0036] Figure 5 It is a three-dimensional structural schematic diagram of the connection between the locking mechanism, the automatic locking mechanism and the screen mesh of the present invention;

[0037] Figure 6 It is a three-dimensional structural schematic diagram of the connection between the locking mechanism and the automatic locking mechanism of the present invention;

[0038] Figure 7 A side view showing the connection between the locking mechanism and the automatic locking mechanism of the present invention;

[0039] Figure 8 It is a partial three-dimensional structural schematic diagram of the locking mechanism and the automatic locking mechanism of the present invention;

[0040] Fig. 9 It is a three-dimensional structural schematic diagram of the overall structure of the vertical plate and the rack connection and the sweeping mechanism of the present invention;

[0041] Fig.10 It is a three-dimensional structural schematic diagram of the local structure of the vertical plate and the rack connection and the sweeping mechanism of the present invention;

[0042] Fig.11 It is a partial structural schematic diagram of the sweeping mechanism of the present invention;

[0043] Fig.12It is a schematic diagram of the three-dimensional structure of the rotating rod and the connecting rod of the present invention;

[0044] Fig.13 An exploded view of the support rail and locking mechanism of the present invention;

[0045] Fig.14 for Fig.13 A schematic diagram of the enlarged structure at B in the middle;

[0046] Fig.15 It is a schematic diagram of the method flow of the present invention.

[0047] Explanation of the numbers in the figure: 1. Machine body; 2. First rotating shaft; 3. First pulley; 4. Second rotating shaft; 5. Third rotating shaft; 6. Winding wheel; 7. Rotating handle; 8. Locking mechanism; 81. Locking gear; 82. Locking sleeve; 821. Incomplete gear; 83. Spring; 84. Guide groove; 9. Automatic locking mechanism; 91. Locking block; 92. Guide rod; 93. Locking rod; 94. Push rod; 10. Support rail; 11. Sliding groove; 12. Screen; 13. Fixing pin; 14. Fixing groove; 15. Second pulley; 16. Blanking plate; 17. Fixed shaft; 18. Rotating gear Wheel; 19, rotating rod; 191, annular groove; 192, connecting rod; 193, rotating ball; 20, third pulley; 21, fourth pulley; 22, rack; 23, vertical plate; 24, motor; 25, sweeping mechanism; 251, limit block; 252, limit frame; 253, "mouth" shaped groove; 254, sliding plate; 255, "gear" column; 256, arc block; 257, linkage rod; 258, linkage gear; 26, locking mechanism; 261, first slide groove; 262, second slide groove; 263, first locking block; 264, second locking block; 27, limit groove. DETAILED DESCRIPTION

[0048] 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; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0049] Embodiment 1:

[0050] See also Figures 1 to 15A rice processing and white rice grading and screening system comprises a machine body 1, characterized in that: a first rotating shaft 2, a second rotating shaft 4 and a third rotating shaft 5 are rotatably connected in sequence at equal intervals on one side of the machine body 1, a plurality of first pulleys 3 are alternately sleeved and slidably connected to one end of the first rotating shaft 2 extending to the outside of the machine body 1, a second rotating shaft 4 and a third rotating shaft 5 are rotatably connected to the position of the machine body 1 below the first rotating shaft 2, and a winding wheel is fixedly connected to the outer surface of each end of the first rotating shaft 2, the second rotating shaft 4 and the third rotating shaft 5 located in the machine body 1 6, the first rotating shaft 2, the second rotating shaft 4 and the third rotating shaft 5 are fixedly connected with a rotating handle 7 at one end near the first pulley 3, the outer surface of the body 1 is fixedly connected with a locking mechanism 8 at a position near the rotating handle 7, and one end of each of the locking mechanisms 8 is fixedly connected with an automatic locking mechanism 9, and the inner surfaces of both sides of the body 1 are fixedly connected with a plurality of support rails 10, a sliding groove 11 is provided on one side of the support rail 10, a screen 12 is slidably connected in the sliding groove 11, and the end of the screen 12 near the first rotating shaft 2 is connected to the winding wheel 6 through a rope.

[0051] In view of the fact that the machine in the background technology is inevitably damaged during use, large machines, especially long machines, require more workers to replace the screen 12 at the same time, resulting in low replacement efficiency.

[0052] In the case where a single screen 12 is damaged, one end of the screen 12 is connected to the rope on the winding wheel 6. The present invention drives the first rotating shaft 2 to rotate by the rotating handle 7 provided, so that the winding wheel 6 on the first rotating shaft 2 rotates accordingly, so that the rope is wound around the winding wheel 6, and then the rope will drive the screen 12 to move, so that the new screen 12 is replaced to a suitable position. The operation is similar to that in the case where the other screens 12 are damaged. If two screens 12 are damaged at the same time and need to be replaced, the pulley corresponding to the damaged screen 12 is moved to the fixing pin 13 for fixing, and then the rotating handle 7 is rotated. The rotation of the rotating handle 7 will drive the first rotating shaft 2 to rotate. The shaft 2 rotates accordingly, and the rotation of the first rotating shaft 2 will drive the first pulley 3 to rotate, and the rotation of the first pulley 3 drives the second pulley 15 to rotate through the V-belt, and the rotation of the second pulley 15 will drive the second rotating shaft 4 to rotate, so that the first rotating shaft 2 and the second rotating shaft 4 simultaneously drive the corresponding winding wheels 6 to rotate, and the rotation of the winding wheel 6 drives the screen 12 to move through the rope, so that the two screens 12 can be replaced at the same time, reducing the steps of replacing the screens 12, and the operation of replacing multiple screens 12 is similar, saving labor costs, and reducing the overall replacement time when multiple screens 12 are damaged, thereby improving work efficiency.

[0053] like Figure 4 , Figure 7 and Figure 8 As shown, the locking mechanism 8 includes a locking gear 81 fixedly connected to the outside of the body 1, the locking gear 81 is sleeved on the outer surface of the first rotating shaft 2, the outer surface of the first rotating shaft 2 is sleeved with a locking sleeve 82 that is slidably connected, one end of the locking sleeve 82 is fixedly connected to a spring 83, the other end of the spring 83 is fixedly connected to the outer surface of the body 1, and a limiting groove 27 is provided on the body 1 near the first rotating shaft 2, a guide groove 84 is provided in the limiting groove 27, and the guide groove 84 is perpendicular to the limiting groove 27.

[0054] like Figure 7 and Figure 8 As shown, the automatic locking mechanism 9 includes a locking block 91 fixedly connected to the other end of the locking sleeve 82, a guide rod 92 is fixedly connected in the guide groove 84, and one end of the guide rod 92 extending into the limit groove 27 is fixedly connected to a locking rod 93, and the side of the locking rod 93 close to the guide groove 84 is fixedly connected to the bottom end of the guide groove 84 through a spring 83 and is slidably connected to the guide rod 92, and the end of the locking rod 93 away from the locking sleeve 82 is fixedly connected to a push rod 94, and the other end of the push rod 94 is close to the screen 12.

[0055] like Figure 8 As shown, an incomplete gear 821 is provided on the inner wall of the locking sleeve 82, and the teeth of the incomplete gear 821 close to the body 1 are arc-shaped, and the teeth of the locking gear 81 close to the locking sleeve 82 are arc-shaped, and the locking sleeve 82 and the locking gear 81 can mesh with each other.

[0056] like Figure 3 , Figure 4 and Figure 8 As shown, the locking block 91 is arc-shaped on one side close to the body 1, and the locking rod 93 is arc-shaped on one end close to the locking block 91. The screen 12 and the push rod 94 are at the same height, and the distance that the screen 12 pushes the push rod 94 to move is less than the depth of the limiting groove 27.

[0057] like Figure 6 , Figure 7 As shown, the outer surfaces of the first rotating shaft 2 and the second rotating shaft 4 are fixedly connected with a fixing pin 13, and the outer surfaces of one end of the second rotating shaft 4 and the third rotating shaft 5 extending to the outside of the body 1 are both sleeved with a second pulley 15 slidably connected, and the second pulley 15 is connected to the first pulley 3 through a V-belt, and the first pulley 3 and the second pulley 15 are provided with a fixing groove 14 near the fixing pin 13, and the width of the fixing groove 14 is greater than the width of the fixing pin 13.

[0058] When the screen 12 is replaced in place, the screen 12 will push the push rod 94 to move, and the movement of the push rod 94 drives the locking rod 93 to overcome the elastic force of the spring 83 and move. When the locking rod 93 continues to move, the end of the locking rod 93 close to the locking sleeve 82 will disengage from the locking block 91, and then the locking sleeve 82 moves in the direction of the machine body 1 under the action of the spring 83, so that the locking sleeve 82 is meshed with the locking gear 81 fixed on the outer surface of the machine body 1, thereby preventing the first rotating shaft 2 from continuing to rotate, and the winding wheel 6 fixedly connected to the outer surface of the first rotating shaft 2 is also fixed, and the length of the rope wound on the winding wheel 6 is fixed, thereby fixing the screen 12 to prevent the screen 12 from moving during the operation of the device, and when the screen 12 is replaced, when the screen 12 moves to the corresponding position, the screen 12 will be locked by itself, and no other operations are required, thereby reducing the workload and avoiding the possibility of the screen 12 falling during the operation of the machine.

[0059] like Figure 2 and Figures 9 to 14 As shown, a plurality of blanking plates 16 are fixedly connected to the inner wall of the body 1 and located below the support rail 10, and a fixed shaft 17 is fixedly connected to the center position below each blanking plate 16, and a rotating gear 18 is rotatably connected to the end of each fixed shaft 17 away from the blanking plate 16, and a rotating rod 19 is rotatably connected to one side of the body 1, and a third pulley 20 and a fourth pulley 21 are fixedly connected to the end of the rotating rod 19 away from the body 1, and two racks 22 are slidably connected to the positions corresponding to the rotating rod 19 on both sides of the inner wall of the body 1, and each The racks 22 are meshed with the rotating gear 18, and both ends of each of the blanking plates 16 are slidably connected with vertical plates 23. The rack 22 is hinged to the vertical plate 23 on one side close to the vertical plate 23. A motor 24 is fixedly connected to the outer wall of the body 1 near the rotating rod 19. The output end of the motor 24 is connected to the third pulley 20 through a V-belt, and the fourth pulley 21 is connected to the sweeping mechanism 25 through a V-belt. When the sweeping mechanism 25 moves, it triggers the locking mechanism 26, and the locking mechanism 26 locks the screen 12 to prevent the screen 12 from falling.

[0060] The rice that has been screened tends to accumulate at the discharge port when entering the discharge port. The accumulation of rice at the discharge port may cause the rice to be blocked in the screening mechanism, making it difficult for the screening device to work normally, or the accumulated rice may fall into the next-level screening mechanism, making it possible for the next-level rice screened by graded screening to be mixed with the previous-level rice.

[0061] The motor 24 is provided to drive the fourth pulley 21 to rotate. The rotation of the fourth pulley 21 drives the rotating rod 19 to rotate, and the rotation of the rotating rod 19 drives the rotating ball 193 to move, and the movement of the rotating ball 193 drives the connecting rod 192 to move, and the movement of the connecting rod 192 drives one of the racks 22 to move, and the movement of one of the racks 22 drives the rotating gear 18 to rotate, and the rotation of the rotating gear 18 drives the other rack 22 to move, and the two racks 22 move toward each other, and the two racks 22 move toward each other and drive the two vertical plates 23 to move toward each other, and the two vertical plates 23 move toward each other and drive the rice accumulated on the side of the vertical plates 23 to move to a relatively middle position, which solves the problem that the rice accumulates at the blanking port, causing the rice to accumulate in the screening mechanism and fall into the next-level screening mechanism, so that the machine can work normally, and at this time, the sweeping mechanism 25 sweeps the rice pushed to the middle position to the blanking outlet, which solves the problem that the rice moves to the side of the vertical plate 23 again in the process of falling on the blanking plate 16, and accumulates again at a position relatively below the vertical plate 23, further ensuring that the machine can work normally.

[0062] like Fig.11 As shown, the sweeping mechanism 25 includes a plurality of limit blocks 251 fixed at both ends of the inner wall of the body 1, a limit frame 252 is slidably connected between the limit blocks 251, a "mouth"-shaped groove 253 is opened in the limit frame 252, a sliding plate 254 is slidably connected in the "mouth"-shaped groove 253, a "gear" column 255 is fixedly connected to the side of the sliding plate 254 close to the rotating rod 19, arc blocks 256 are fixedly connected to both ends of the sliding plate 254, a connecting rod 257 is rotatably connected to the outside of the body 1, the end of the connecting rod 257 away from the body 1 is fixedly connected to the fourth pulley 21, and the end of the connecting rod 257 extending to the inner side of the body 1 is fixedly connected to a connecting gear 258, and the connecting gear 258 is meshed with the "gear" column 255.

[0063] like Fig.12 As shown, the outer surface of the rotating rod 19 is provided with an annular groove 191 that ends therewith, and one end of the rack 22 close to the rotating rod 19 is fixedly connected to a connecting rod 192, and one end of the connecting rod 192 close to the rotating rod 19 is rotatably connected to a rotating ball 193, and the rotating ball 193 is located in the annular groove 191 and is slidably connected to the annular groove 191.

[0064] like Fig.13 and Fig.14As shown, the locking mechanism 26 includes a first slide groove 261 opened at one end of the support rail 10 near the blanking plate 16, and a second slide groove 262 is opened at one end of the support rail 10 near the blanking plate 16. The second slide groove 262 is vertically arranged with the first slide groove 261 and communicates with the first slide groove 261. A first locking block 263 is slidably connected in the first slide groove 261, and the first locking block 263 is connected to the bottom end of the first slide groove 261 through a spring 83. A second locking block 264 is slidably connected in the second slide groove 262, and the second locking block 264 is L-shaped. The first locking block 263 and the second locking block 264 are fixedly connected to the bottom end of the second slide groove 262 through a spring 83.

[0065] When rice needs to be screened, when the motor 24 is started, the motor 24 will drive the fourth pulley 21 to rotate. Then the fourth pulley 21 drives the rotating rod 19 to rotate, and then the rotating rod 19 will drive the fourth pulley 21 on the linkage rod 257 to rotate, so that the linkage rod 257 rotates, and the rotation of the linkage rod 257 will drive the linkage gear 258 to rotate, because the linkage gear 258 and the "gear" column 255 on the sliding plate 254 are meshed with each other, and the position of the linkage gear 258 is relatively fixed, so the rotation of the linkage gear 258 will move the sliding plate 254, and the brush provided between the two sliding plates 254 will sweep the rice located in the middle position to the outlet of the discharge port, solving the problem that the rice is accumulated at the drop port, causing the rice to accumulate in the screening mechanism and fall into the next level screening mechanism, so that the machine can work normally.

[0066] And when the sliding plate 254 moves, it will drive the limiting frame 252 to move. When the limiting frame 252 moves, it will touch the first locking block 263, so the first locking block 263 will move. When the first locking block 263 moves, the first locking block 263 will not block the movement of the second locking block 264. Under the action of the spring 83, the second locking block 264 will move to the tail end of the screen 12, and the screen 12 will be fixed by the second locking block 264, further preventing the screen 12 from moving, and also avoiding the possibility of the screen 12 falling during the operation of the machine.

[0067] A rice processing white rice grading and screening method, such as Fig.15 As shown, the following steps are included:

[0068] S1: First, according to the damage of the screen 12, a new screen 12 is connected to the winding wheel 6 through a rope, and the pulley is moved to the corresponding rotating shaft for fixing.

[0069] S2: Turn the rotating handle 7, the rotating handle 7 drives the corresponding rotating shaft to rotate, the rotating shaft drives the winding wheel 6 to rotate or one of the rotating shafts drives the other rotating shafts to rotate, and the other rotating shafts drive another winding wheel 6 to rotate, thereby moving a single or multiple new screens 12 to the corresponding position.

[0070] S3: When the new screen 12 moves to the corresponding position, it will touch the automatic locking mechanism 9, and the automatic locking mechanism 9 will be disengaged from the locking mechanism 8, and the locking mechanism 8 will fix the corresponding rotating shaft.

[0071] S4: Start the motor 24, which drives the two vertical plates 23 to move relative to each other through the series transmission structure, thereby pushing the rice piled on the sides of the vertical plates 23 to a relatively middle position.

[0072] S5: The rotating rod 19 rotates to drive the fourth pulley 21 to rotate, and the fourth pulley 21 rotates to drive the sweeping mechanism 25 to move, and the rice pushed to the relatively middle position is swept down to the position of the discharge port outlet, so as to prevent the rice located at the relatively middle position from being accumulated again beside the vertical plate 23 during the falling process.

[0073] S6: The sweeping mechanism 25 moves to touch the locking mechanism 26, and the locking mechanism 26 moves to block the tail of the screen 12 to prevent the screen 12 from falling during the operation of the device.

[0074] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rice processing white rice grading and screening system, comprising a body (1), characterized in that: A first rotating shaft (2), a second rotating shaft (4) and a third rotating shaft (5) are rotatably connected to one side of the machine body (1) at equal intervals, and the first rotating shaft (2) is extended to the end of the machine body (1) and is sleeved with a plurality of first pulleys (3) in a sliding manner, and the outer surfaces of the ends of the first rotating shaft (2), the second rotating shaft (4) and the third rotating shaft (5) located inside the machine body (1) are fixedly connected to a winding wheel (6), and the first rotating shaft (2), the second rotating shaft (4) and the third rotating shaft (5) are close to the first pulley (3). One end of each of the two rotating shafts (1) is fixedly connected to a rotating handle (7); a locking mechanism (8) is fixedly connected to the outer surface of the body (1) near the rotating handle (7); one end of each of the locking mechanisms (8) is fixedly connected to an automatic locking mechanism (9); a plurality of support rails (10) are fixedly connected to the inner surfaces of both sides of the body (1); a sliding groove (11) is provided on one side of the support rail (10); a sliding screen (12) is inserted into the sliding groove (11); and one end of the screen (12) near the first rotating shaft (2) is connected to the winding wheel (6) via a rope; The locking mechanism (8) comprises a locking gear (81) fixedly connected to the outside of the machine body (1); the locking gear (81) is sleeved on the outer surface of the first rotating shaft (2); the outer surface of the first rotating shaft (2) is sleeved with a locking sleeve (82) in sliding connection; one end of the locking sleeve (82) is fixedly connected to a spring (83); the other end of the spring (83) is fixedly connected to the outer surface of the machine body (1); a limiting groove (27) is provided at a position of the machine body (1) close to the first rotating shaft (2); a guide groove (84) is provided in the limiting groove (27); the guide groove (84) is perpendicular to the limiting groove (27); The automatic locking mechanism (9) comprises a locking block (91) fixedly connected to the other end of the locking sleeve (82); a guide rod (92) is fixedly connected in the guide groove (84); one end of the guide rod (92) extending into the limit groove (27) is fixedly connected to a locking rod (93); a side of the locking rod (93) close to the guide groove (84) is fixedly connected to the bottom end of the guide groove (84) through a spring (83) and is slidably connected to the guide rod (92); an end of the locking rod (93) away from the locking sleeve (82) is fixedly connected to a push rod (94); and the other end of the push rod (94) is close to the screen (12); An incomplete gear (821) is provided on the inner wall of the locking sleeve (82), the teeth of the incomplete gear (821) on the side close to the machine body (1) are arc-shaped, and the teeth of the locking gear (81) on the side close to the locking sleeve (82) are arc-shaped, and the locking sleeve (82) and the locking gear (81) can mesh with each other; The locking block (91) is arc-shaped on one side close to the machine body (1), and the locking rod (93) is arc-shaped on one end close to the locking block (91). The screen (12) and the push rod (94) are at the same height, and the distance that the screen (12) pushes the push rod (94) to move is less than the depth of the limiting groove (27).

2. A rice processing white rice grading and screening system according to claim 1, characterized in that: The outer surfaces of the first rotating shaft (2) and the second rotating shaft (4) are fixedly connected with a fixing pin (13); the outer surfaces of one end of the second rotating shaft (4) and the third rotating shaft (5) extending to the outside of the machine body (1) are sleeved with a second pulley (15) in a slidable manner; the second pulley (15) is connected to the first pulley (3) via a V-belt; the first pulley (3) and the second pulley (15) are provided with a fixing groove (14) at a position close to the fixing pin (13); the width of the fixing groove (14) is greater than the width of the fixing pin (13).

3. A rice processing white rice grading and screening system according to claim 2, characterized in that: A plurality of blanking plates (16) are fixedly connected to the inner wall of the machine body (1) and located below the support rail (10); a fixed shaft (17) is fixedly connected to the center of each blanking plate (16); one end of each fixed shaft (17) away from the blanking plate (16) is rotatably connected to a rotating gear (18); one side of the machine body (1) is rotatably connected to a rotating rod (19); one end of the rotating rod (19) away from the machine body (1) is fixedly connected to a third pulley (20) and a fourth pulley (21); two racks (22) are slidably connected to positions corresponding to the rotating rod (19) on both sides of the inner wall of the machine body (1); each rack ( The two ends of each blanking plate (16) are slidably connected to a vertical plate (23), and the rack (22) is hinged to the vertical plate (23) on one side close to the vertical plate (23). A motor (24) is fixedly connected to the outer wall of the machine body (1) near the rotating rod (19). The output end of the motor (24) is connected to the third pulley (20) through a V-belt. The fourth pulley (21) is connected to a sweeping mechanism (25) through a V-belt. When the sweeping mechanism (25) moves, it triggers a locking mechanism (26), and the locking mechanism (26) locks the screen (12) to prevent the screen (12) from falling.

4. A rice processing white rice grading and screening system according to claim 3, characterized in that: The sweeping mechanism (25) comprises a plurality of limit blocks (251) fixed to both ends of the inner wall of the machine body (1); a limit frame (252) is slidably connected between the limit blocks (251); a "mouth"-shaped groove (253) is provided in the limit frame (252); a sliding plate (254) is slidably connected in the "mouth"-shaped groove (253); a "gear" column (255) is fixedly connected to the side of the sliding plate (254) close to the rotating rod (19). , the two ends of the sliding plate (254) are fixedly connected with arc blocks (256), the outer side of the machine body (1) is penetrated by a connecting rod (257) for rotation connection, the end of the connecting rod (257) away from the machine body (1) is fixedly connected with a fourth pulley (21), and the end of the connecting rod (257) extending to the inner side of the machine body (1) is fixedly connected with a connecting gear (258), and the connecting gear (258) is meshed with the "gear" column (255); The outer surface of the rotating rod (19) is provided with an annular groove (191) for terminating the rotating rod. One end of the rack (22) close to the rotating rod (19) is fixedly connected to a connecting rod (192). One end of the connecting rod (192) close to the rotating rod (19) is rotatably connected to a rotating ball (193). The rotating ball (193) is located in the annular groove (191) and is slidably connected to the annular groove (191).

5. The screening method of a rice processing white rice grading and screening system according to claim 4, characterized in that: The following steps are involved: S1: First, according to the damage of the screen (12), a new screen (12) is connected to the winding wheel (6) through a rope, and the pulley is moved to the corresponding rotating shaft for fixing; S2: rotating the rotating handle (7), the rotating handle (7) drives the corresponding rotating shaft to rotate, the rotating shaft drives the winding wheel (6) to rotate, or one of the rotating shafts drives the other rotating shafts to rotate, and the other rotating shafts drive another winding wheel (6) to rotate, so as to move a single or multiple new screens (12) to corresponding positions; S3: When the new screen (12) moves to the corresponding position, it touches the automatic locking mechanism (9), the automatic locking mechanism (9) is disengaged from the locking mechanism (8), and the locking mechanism (8) fixes the corresponding rotating shaft; S4: starting the motor (24), the motor (24) drives the two vertical plates (23) to move relative to each other through the series transmission structure, thereby pushing the rice piled on the sides of the vertical plates (23) to a relatively middle position; S5: The rotating rod (19) rotates to drive the fourth pulley (21) to rotate, and the fourth pulley (21) rotates to drive the sweeping mechanism (25) to move, so that the rice pushed to the relatively middle position is swept down to the position of the discharge outlet, so as to prevent the rice located at the relatively middle position from being accumulated again on the side of the vertical plate (23) during the falling process; S6: The sweeping mechanism (25) moves to touch the locking mechanism (26), and the locking mechanism (26) moves to block the tail of the screen (12) to prevent the screen (12) from falling during the operation of the device.

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