Rice processing device and processing method based on self-adaptive regulation and control of conveying amount

Abstract

The invention relates to the technical field of rice processing, in particular to a rice processing device and method based on conveying capacity self-adaptive regulation and control, the rice processing device based on conveying capacity self-adaptive regulation and control comprises a machine shell, a feeding hopper is arranged on the machine shell, and a sieve plate is arranged in the machine shell in a sliding mode; the blocking assembly is arranged on the feeding hopper and comprises a first blocking piece and a second blocking piece which are arranged in a linkage mode, the first blocking piece is connected with a driving structure arranged on the feeding hopper, the second blocking assembly is connected with a speed changing structure arranged on the feeding hopper, and when the driving structure drives the first blocking piece to move relative to the feeding hopper, the first blocking piece is blocked by the speed changing structure. The second plugging piece can drive the speed change structure to act to change the rotating speed of the motor fixedly mounted on the shell; the slicking assembly is arranged in the machine shell, connected with the motor and capable of slicking the rice falling onto the sieve plate; the screening assembly is arranged on the machine shell and connected with the slicking assembly, and the screening assembly can drive the screening plate to screen the rice falling onto the screening plate.

Description

Technical Field

[0001] The invention relates to the technical field of rice processing, in particular to a rice processing device and a processing method based on adaptive control of conveying amount. Background Art

[0002] Rice is processed from paddy. The rice on the market needs to go through the following processes in the processing plant: raw grain cleaning, rice husking, rice-rough separation, rice milling, white rice grading, color sorting, polishing, secondary white rice grading, packaging, etc. During the raw grain cleaning process, machines such as vibrating screens are usually used to process the paddy. However, when using a vibrating screen for screening, the vibration frequency of the vibrating screen cannot automatically adapt to the feeding and conveying capacity of the raw grain feeding equipment. When the feeding and conveying capacity is large, the low-frequency vibrating screen cannot perform fast screening, and the continuous conveying of rice will cause the screening machine to become blocked; when the conveying capacity is small and the vibration frequency of the vibrating screen is high, the under-screening effect of the screening plate cannot be fully utilized, which reduces the screening efficiency of the raw grain. Summary of the invention

[0003] The object of the present invention is to provide a rice processing device and a processing method based on adaptive control of conveying amount, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A rice processing device based on adaptive control of conveying volume comprises a casing, a feeding hopper is arranged on the casing, and a sieve plate is slidably arranged in the casing; A blocking component is arranged on the feeding hopper, and includes a first blocking member and a second blocking member which are arranged in linkage, wherein the first blocking member is connected to a driving structure arranged on the feeding hopper, and the second blocking member is connected to a speed-changing structure arranged on the feeding hopper, and when the driving structure drives the first blocking member to move relative to the feeding hopper, the second blocking member can drive the speed-changing structure to move, so as to change the speed of the motor fixedly mounted on the casing; A scraping assembly is arranged in the housing and connected to the motor, and can scrape and level the rice that falls onto the screen plate; The screening component is arranged on the casing and connected to the scraping component. When the scraping component is in action, the screening component can drive the screen plate to screen the rice falling on the screen plate.

[0005] As a further solution of the present invention: the first blocking member includes a No. 1 blocking plate slidably arranged on the feeding hopper, a guide plate and a storage plate are fixedly arranged on the No. 1 blocking plate, and a guide groove is formed on the guide plate.

[0006] As a further solution of the present invention: the driving structure includes an electric telescopic rod fixedly installed on the charging hopper, a No. 1 pulley is mounted on the telescopic end of the electric telescopic rod, and the No. 1 pulley is slidably arranged in the guide groove.

[0007] As a further solution of the present invention: the second sealing member includes a No. 2 sealing plate slidably arranged on the feeding hopper, a No. 1 hinged plate rotatably mounted on the No. 2 sealing plate, an end of the No. 1 hinged plate away from the No. 2 sealing plate is connected to a rotating plate installed on the feeding hopper, and an end of the rotating plate away from the No. 1 hinged plate is connected to a No. 2 hinged plate rotatably mounted on the storage plate.

[0008] As a further solution of the present invention: the speed change structure includes an adjusting gear rotatably mounted on the feeding hopper, the adjusting gear is meshed with a rack plate fixedly mounted on the second sealing plate, and the adjusting gear is connected to a continuously variable transmission fixedly mounted on the feeding hopper.

[0009] As a further solution of the present invention: the scraping assembly includes a reciprocating drive structure and a scraping structure, the reciprocating drive structure includes a pulley rotatably mounted on the inner wall of the casing, the pulley is provided with two groups along the width direction of the casing, belts are rotatably mounted on the two groups of pulleys, and the belts are provided with protrusions.

[0010] As a further solution of the present invention: the scraping structure includes a sliding plate slidably connected to the casing, the sliding plate is provided with a sliding groove on the side facing the belt, the protruding column is slidably arranged in the sliding groove, and a scraper is fixedly arranged on the side of the sliding plate away from the belt.

[0011] As a further solution of the present invention: the screening assembly includes a cam rotatably mounted on the casing, the cam is connected to any one of the pulleys through a bevel gear set, and cooperates with a No. 2 pulley rotatably mounted on the screen plate, and the screen plate is slidably connected to a sliding rod fixedly arranged on the inner wall of the casing, a spring is slidably arranged on the sliding rod, one end of the spring abuts against the casing, and the other end abuts against the screen plate.

[0012] As a further solution of the present invention: a rice processing method based on adaptive control of the conveying amount is also proposed, using the rice processing device based on adaptive control of the conveying amount, comprising the following steps: Step 1: Control the telescopic end of the electric telescopic rod to move toward the casing, so that the No. 1 pulley contacts and squeezes the inner wall of the guide groove, pushing the No. 1 blocking plate to gradually protrude from the hopper; Step 2: When the No. 1 blocking plate moves, the No. 2 hinged plate moves with the No. 1 blocking plate and drives the rotating plate to rotate. At this time, under the connection of the fixed-length rotating plate, the No. 1 hinged plate pushes the No. 2 blocking plate to protrude from the hopper, and the rack plate and the adjusting gear enter into a meshing transmission state, driving the adjusting gear to rotate; Step 3: The rotating adjustment gear drives the rotating shaft of the continuously variable transmission to move, thereby driving the motor to work; Step 4: The motor works, the belt keeps rotating in the same direction, driving the sliding plate to move back and forth along the width direction of the casing, and the scraper fixedly connected to the sliding plate scrapes the conical rice pile falling on the screen plate flat; Step 5: When the belt rotates, under the connection of the bevel gear set, the cam continues to rotate in the same direction and cooperates with the No. 2 pulley to push the screen plate to vibrate left and right, thereby screening the rice.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By setting up the blocking component, the electric telescopic rod can be used to control the distance between the No. 1 blocking plate and the No. 2 blocking plate, thereby changing the rice conveying amount of the hopper. When the distance between the No. 1 blocking plate and the No. 2 blocking plate is larger, the rice conveying amount is larger, the rack plate drives the adjusting gear to rotate at a larger angle, the motor speed is higher, and the motor controls the screening speed of the screen plate to be faster, so as to adapt to the rice screening work with different conveying amounts; In the screening process, the scraping assembly connected to the motor can be used to scrape and level the conical rice pile delivered to the screen plate from the hopper. Under different motor speeds, the movement speed of the scraper is different. The reciprocating scraper scrapes and level the rice and disperses it on the screen plate, which can make full use of the screening area of ​​the screen plate, improve the screening efficiency, and shorten the screening time. At the same time, a screening component connected to the motor is provided, so that the screen plate can match different vibration frequencies according to different motor speeds, thereby screening the rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a structural schematic diagram of an embodiment of a rice processing device based on adaptive regulation of conveying volume.

[0015] Figure 2 The present invention is a schematic structural diagram of a blocking component in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0016] Figure 3 The present invention is a schematic diagram of the structure of a driving component in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0017] Figure 4 The present invention is a schematic structural diagram of a first blocking member in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0018] Figure 5 The present invention is a schematic diagram of the structure of a speed change structure in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0019] Figure 6 The present invention is a schematic diagram of the structure inside the casing of an embodiment of a rice processing device based on adaptive control of conveying volume.

[0020] Figure 7 The present invention is a schematic structural diagram of a reciprocating drive structure in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0021] Figure 8 The present invention is a structural schematic diagram of a scraping structure in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0022] Fig. 9 The present invention is a schematic structural diagram of a screening component in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0023] Fig.10 The present invention is a schematic diagram of the structure of a sieve plate in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0024] Fig.11 The present invention is a structural schematic diagram of the connection between a sieve plate and a casing in an embodiment of a rice processing device based on adaptive control of conveying volume.

[0025] In the figure: 1, casing; 2, hopper; 3, No. 2 blocking plate; 4, No. 1 blocking plate; 401, storage plate; 402, guide plate; 5, No. 1 hinged plate; 6, rotating plate; 7, No. 2 hinged plate; 8, guide groove; 9, electric telescopic rod; 10, No. 1 pulley; 11, adjusting gear; 12, rack plate; 13, continuously variable transmission; 14, scraper; 1401, sliding plate; 1402, slide groove; 15, belt; 1501, protruding column; 16, fixed plate; 17, sieve plate; 18, slide rod; 19, spring; 20, cam; 21, No. 2 pulley; 22, through groove; 23, fixed rod; 24, bevel gear set; 25, clamping groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0028] See also Figures 1 to 11 In an embodiment of the present invention, a rice processing device based on adaptive control of conveying amount includes a housing 1, a feeding hopper 2 is arranged on the housing 1, and a sieve plate 17 is slidably arranged in the housing 1; For details, please refer to Fig.11 The above-mentioned feeding hopper 2 is connected to the rice transport device to guide the rice to be processed into the casing 1 and accumulate it on the sieve plate 17 in a cone shape. Two groups of fixed plates 16 are fixedly arranged in the casing 1. Two groups of fixed rods 23 are symmetrically arranged along the length direction of the fixed plate 16 on the side away from the feeding hopper 2. The fixed rods 23 are slidably arranged in the through grooves 22 provided on the sieve plate 17, so that the sieve plate 17 can slide back and forth relative to the casing 1, and the rice transported to the sieve plate 17 by the feeding hopper 2 is screened to remove stones in the rice.

[0029] A blocking component is arranged on the feeding hopper 2, and includes a first blocking member and a second blocking member which are arranged in linkage, wherein the first blocking member is connected to a driving structure arranged on the feeding hopper 2, and the second blocking member is connected to a speed-changing structure arranged on the feeding hopper 2, and when the driving structure drives the first blocking member to move relative to the feeding hopper 2, the second blocking member can drive the speed-changing structure to move, so as to change the speed of the motor fixedly mounted on the casing 1; The first blocking member includes a No. 1 blocking plate 4 slidably disposed on the hopper 2, a guide plate 402 and a storage plate 401 are fixedly disposed on the No. 1 blocking plate 4, and a guide groove 8 is formed on the guide plate 402; The driving structure comprises an electric telescopic rod 9 fixedly mounted on the feeding hopper 2, a first pulley 10 is mounted on the telescopic end of the electric telescopic rod 9, and the first pulley 10 is slidably disposed in the guide groove 8; The second blocking member comprises a No. 2 blocking plate 3 slidably arranged on the feeding hopper 2, a No. 1 hinged plate 5 is rotatably arranged on the No. 2 blocking plate 3, an end of the No. 1 hinged plate 5 away from the No. 2 blocking plate 3 is connected to a rotating plate 6 installed on the feeding hopper 2, and an end of the rotating plate 6 away from the No. 1 hinged plate 5 is connected to a No. 2 hinged plate 7 rotatably installed on the storage plate 401; The speed change structure includes an adjusting gear 11 rotatably mounted on the hopper 2, the adjusting gear 11 is meshed with a rack plate 12 fixedly mounted on the second blocking plate 3, and the adjusting gear 11 is connected to a continuously variable transmission 13 fixedly mounted on the hopper 2; For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 In the initial state, the No. 1 blocking plate 4 and the No. 2 blocking plate 3 are close to each other to completely block the feeding hopper 2. When performing the rice screening operation, the electric telescopic rod 9 is started, and the electric telescopic rod 9 pushes the No. 1 pulley 10 to gradually approach the casing 1. At this time, the No. 1 pulley 10 is in contact and squeezed with the side wall of the guide groove 8, forcing the No. 1 blocking plate 4 to gradually protrude from the feeding hopper 2. When the No. 1 blocking plate 4 moves, the No. 2 hinged plate 7 installed on the storage plate 401 will pull the rotating plate 6 to deflect in the direction of the casing 1, and the end of the deflected rotating plate 6 connected to the No. 1 hinged plate 5 will swing upward in the direction away from the casing 1, thereby pushing the No. 2 blocking plate 4 to move. The plate 3 protrudes from the feeding hopper 2, so that the feeding hopper 2 is opened, and during the movement of the No. 2 sealing plate 3, the rack plate 12 and the adjusting gear 11 enter into a meshing transmission state, driving the adjusting gear 11 to rotate, and the rotating adjusting gear 11 drives the adjusting shaft of the continuously variable transmission 13 to move, which can drive the motor to enter a working state. By adjusting the opening degree of the No. 1 sealing plate 4 and the No. 2 sealing plate 3, the greater the distance between the No. 1 sealing plate 4 and the No. 2 sealing plate 3, the greater the angle of rotation of the adjusting gear 11 driven by the rack plate 12, the higher the speed of the motor, and the faster the screening speed of the motor-controlled screen plate 17 will be, so as to adapt to the rice screening work with different conveying amounts.

[0030] See also Figure 1 , Figure 6 , Figure 7 , Figure 8 , a rice processing device based on adaptive control of the conveying amount, further comprising a scraping component, which is arranged in the housing 1 and connected to the motor, and can scrape the rice falling on the screen plate 17; The scraping structure includes a sliding plate 1401 slidably connected to the housing 1, a sliding groove 1402 is provided on the side of the sliding plate 1401 facing the belt 15, the protruding column 1501 is slidably arranged in the sliding groove 1402, and a scraper 14 is fixedly arranged on the side of the sliding plate 1401 away from the belt 15; For details, please refer to Figure 6 , Figure 7 , Figure 8The sliding plate 1401 is symmetrically fixed with two sets of clamping rods on one side facing the belt 15, and the clamping rods are slidably arranged in the clamping groove 25 opened on the inner wall of the casing 1. It can be seen from the above that after the motor is started, the output shaft of the motor will drive the pulley to rotate continuously in the same direction, so that the belt 15 can rotate continuously in the same direction in the casing 1. At this time, the protruding column 1501 fixed on the belt 15 can drive the sliding plate 1401 to make reciprocating motion in the clamping groove 25 opened on the inner wall of the casing 1 during the sliding process in the slide groove 1402. The reciprocating sliding plate 1401 can drive the scraper 14 to move, and scrape the conical rice accumulated on the screen plate 17 flat. At different motor speeds, the movement speed of the scraper 14 is different. The reciprocating scraper 14 scrapes the rice flat and disperses it on the screen plate 17, which can make full use of the screening area of ​​the screen plate 17, improve the screening efficiency, and shorten the screening time.

[0031] See also Fig. 9 , Fig.10 A rice processing device based on adaptive control of conveying amount, further comprising a screening component, which is arranged on the housing 1 and connected to the scraping component. When the scraping component is in action, the screening component can drive the sieve plate 17 to screen the rice falling on the sieve plate 17; The screening assembly includes a cam 20 rotatably mounted on the housing 1, the cam 20 is connected to any of the pulleys through a bevel gear set 24, and cooperates with a No. 2 pulley 21 rotatably mounted on the screen plate 17, and the screen plate 17 is slidably connected to a slide bar 18 fixedly arranged on the inner wall of the housing 1, and a spring 19 is slidably arranged on the slide bar 18, one end of the spring 19 abuts against the housing 1, and the other end abuts against the screen plate 17; The bevel gear set 24 includes a first bevel gear and a second bevel gear, wherein the first bevel gear is coaxially fixedly connected to the pulley, and the second bevel gear is coaxially fixedly connected to the cam 20 rotatably mounted on the housing 1. When the belt 15 continuously rotates in the same direction, the first bevel gear and the second bevel gear enter into a meshing transmission state, driving the cam 20 to continuously rotate in the same direction. To elaborate, in the initial state, the spring 19 is in a compressed state, and the compressed spring 19 pushes the sieve plate 17 close to the belt 15. It can be seen from the above that when the cam 20 continues to rotate in the same direction, the long axis of the cam 20 and the second pulley 21 are in contact and extrusion, which can push the sieve plate 17 away from the belt 15, causing the spring 19 to be further extruded until the long axis of the cam 20 is separated from the second pulley 21, and the spring 19 releases its elastic potential energy, pushing the sieve plate 17 close to the belt 15 and returning to its initial position. As the cam 20 continues to rotate, the sieve plate 17 repeats the above action in the casing 1, vibrating left and right, and can sieve the rice to the bottom of the sieve plate 17, and then transport it out of the casing 1 through other transmission equipment.

[0032] As an embodiment of the present invention, a rice processing method based on adaptive control of the conveying amount is also proposed, using the rice processing device based on adaptive control of the conveying amount, comprising the following steps: Step 1: Control the telescopic end of the electric telescopic rod 9 to move toward the housing 1, so that the first pulley 10 contacts and squeezes the inner wall of the guide groove 8, pushing the first blocking plate 4 to gradually protrude from the feeding hopper 2; Step 2: When the No. 1 blocking plate 4 moves, the No. 2 hinged plate 7 follows the No. 1 blocking plate 4 and drives the rotating plate 6 to rotate. At this time, under the connection of the fixed-length rotating plate 6, the No. 1 hinged plate 5 pushes the No. 2 blocking plate 3 to protrude from the hopper 2, and the rack plate 12 and the adjusting gear 11 enter into a meshing transmission state, driving the adjusting gear 11 to rotate; Step 3: The rotating adjustment gear 11 drives the rotating shaft of the continuously variable transmission 13 to move, thereby driving the motor to work; Step 4: The motor works, the belt 15 continuously rotates in the same direction, driving the sliding plate 1401 to move back and forth along the width direction of the housing 1, and the scraper 14 fixedly connected to the sliding plate 1401 scrapes the conical rice pile falling on the screen plate 17 flat; Step 5: When the belt 15 rotates, under the connection of the bevel gear set 24, the cam 20 continues to rotate in the same direction, and cooperates with the second pulley 21 to push the screen plate 17 to vibrate left and right, thereby screening the rice.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rice processing device based on adaptive control of conveying volume, characterized in that: include: A casing (1), wherein a hopper (2) is disposed on the casing (1), and a sieve plate (17) is slidably disposed inside the casing (1); a blocking component, arranged on the feeding hopper (2), comprising a first blocking member and a second blocking member which are arranged in linkage, wherein the first blocking member is connected to a driving structure arranged on the feeding hopper (2), and the second blocking member is connected to a speed-changing structure arranged on the feeding hopper (2), and when the driving structure drives the first blocking member to move relative to the feeding hopper (2), the second blocking member can drive the speed-changing structure to move, so as to change the rotation speed of the motor fixedly mounted on the housing (1); a scraping component, arranged in the housing (1) and connected to the motor, capable of scraping the rice that falls onto the sieve plate (17); A screening component is arranged on the housing (1) and connected to the scraping component. When the scraping component is in motion, the screening component can drive the screen plate (17) to screen the rice that has fallen onto the screen plate (17).

2. A rice processing device based on adaptive control of conveying amount according to claim 1, characterized in that: The first blocking member comprises a No. 1 blocking plate (4) slidably arranged on the feeding hopper (2), a guide plate (402) and a storage plate (401) being fixedly arranged on the No. 1 blocking plate (4), and a guide groove (8) being formed on the guide plate (402).

3. A rice processing device based on adaptive control of conveying amount according to claim 2, characterized in that: The driving structure comprises an electric telescopic rod (9) fixedly mounted on the feeding hopper (2), a first pulley (10) being mounted on the telescopic end of the electric telescopic rod (9), and the first pulley (10) being slidably disposed in the guide groove (8).

4. A rice processing device based on adaptive control of conveying amount according to claim 2, characterized in that: The second blocking member comprises a No. 2 blocking plate (3) slidably arranged on the feeding hopper (2), a No. 1 hinged plate (5) rotatably mounted on the No. 2 blocking plate (3), an end of the No. 1 hinged plate (5) away from the No. 2 blocking plate (3) being connected to a rotating plate (6) mounted on the feeding hopper (2), and an end of the rotating plate (6) away from the No. 1 hinged plate (5) being connected to a No. 2 hinged plate (7) rotatably mounted on the storage plate (401).

5. A rice processing device based on adaptive control of conveying amount according to claim 4, characterized in that: The speed change structure comprises an adjusting gear (11) rotatably mounted on the feeding hopper (2), the adjusting gear (11) meshing with a rack plate (12) fixedly mounted on the second blocking plate (3), and the adjusting gear (11) is connected to a continuously variable transmission (13) fixedly mounted on the feeding hopper (2).

6. A rice processing device based on adaptive control of conveying amount according to claim 2, characterized in that: The scraping assembly comprises a reciprocating drive structure and a scraping structure, the reciprocating drive structure comprises a pulley rotatably mounted on the inner wall of the housing (1), two groups of pulleys are provided along the width direction of the housing (1), belts (15) are rotatably mounted on the two groups of pulleys, and a protruding column (1501) is provided on the belt (15).

7. A rice processing device based on adaptive control of conveying amount according to claim 6, characterized in that: The scraping structure comprises a sliding plate (1401) slidably connected to the housing (1), a sliding groove (1402) is provided on a side of the sliding plate (1401) facing the belt (15), the protruding column (1501) is slidably arranged in the sliding groove (1402), and a scraper (14) is fixedly arranged on a side of the sliding plate (1401) away from the belt (15).

8. The rice processing device based on adaptive control of conveying amount according to claim 6, characterized in that: The screening assembly comprises a cam (20) rotatably mounted on the housing (1), the cam (20) being connected to any one of the pulleys via a bevel gear set (24) and cooperating with a second pulley (21) rotatably mounted on the screen plate (17), and the screen plate (17) being slidably connected to a slide bar (18) fixedly mounted on the inner wall of the housing (1), a spring (19) being slidably mounted on the slide bar (18), one end of the spring (19) being in contact with the housing (1), and the other end of the spring (19) being in contact with the screen plate (17).

9. A rice processing method based on adaptive control of conveying amount, characterized in that: The rice processing device based on adaptive control of the conveying amount as claimed in claim 1 comprises the following steps: Step 1: Control the telescopic end of the electric telescopic rod (9) to move toward the housing (1), so that the first pulley (10) and the inner wall of the guide groove (8) are in contact and squeezed, pushing the first blocking plate (4) to gradually protrude from the feeding hopper (2); Step 2: When the No. 1 blocking plate (4) moves, the No. 2 hinged plate (7) moves along with the No. 1 blocking plate (4) and drives the rotating plate (6) to rotate. At this time, under the connection of the fixed-length rotating plate (6), the No. 1 hinged plate (5) pushes the No. 2 blocking plate (3) to protrude from the feeding hopper (2), and the rack plate (12) and the adjusting gear (11) enter into a meshing transmission state, driving the adjusting gear (11) to rotate; Step 3: The rotating adjustment gear (11) drives the rotating shaft of the continuously variable transmission (13) to move, thereby driving the motor to work; Step 4: The motor is turned on, and the belt (15) continuously rotates in the same direction, driving the sliding plate (1401) to move back and forth along the width direction of the housing (1), and the scraper (14) fixedly connected to the sliding plate (1401) scrapes and flattens the conical rice pile that falls on the screen plate (17); Step 5: When the belt (15) rotates, under the connection of the bevel gear set (24), the cam (20) continues to rotate in the same direction and cooperates with the second pulley (21) to push the screen plate (17) to vibrate left and right, thereby screening the rice.

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