Automatic husking and screening device for sorghum

Abstract

The invention relates to the technical field of sorghum hulling, in particular to an automatic sorghum hulling and screening device which comprises a main machine body and a hulling assembly arranged at the top of the main machine body and used for hulling sorghum. The separating assembly is arranged on one side of the main machine body and used for separating the husked sorghum from the husks; the screening assembly is arranged in the main machine body and is used for carrying out secondary separation on the sorghum; the husking assembly comprises a bottom machine body and a top machine body, a feeding port is further formed in the top of the bottom machine body, husking units are further rotationally arranged in the bottom machine body and the top machine body, and a circular cavity for husking sorghum is formed in the bottom machine body and the top machine body. The shelling unit comprises a rotating shaft which is transversely and rotatably arranged in the bottom machine body and the top machine body, a plurality of grinding rollers capable of reciprocating relative to the vertical direction of the rotating shaft are arranged on the rotating shaft, and a plurality of air bags capable of enabling the grinding rollers to reciprocate are further arranged on the rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of sorghum dehulling technology, specifically to an automated sorghum dehulling and screening device. Background Technology

[0002] Sorghum, as an important food crop, feed ingredient, and basic raw material for the brewing industry in my country, is widely planted in the arid and semi-arid regions of northern China and the hilly areas of southwestern China, with an annual output exceeding ten million tons, playing a vital role. With the improvement of the level of large-scale planting in modern agriculture, the efficiency and quality requirements of post-harvest processing of sorghum are increasing. Dehulling and screening, as the core pre-processing step of sorghum processing, directly determines the quality and economic value of subsequent deep-processed products (such as sorghum rice, sorghum starch, and sorghum grains for brewing). Its technical level has become one of the key points for the large-scale development of the sorghum industry.

[0003] Chinese patent CN216149814U discloses a sorghum dehulling and screening device. A linear drive mechanism is symmetrically installed on both sides of the top of the box body. A bracket is slidably mounted on the linear drive mechanism, and a brush is installed below the bracket. A fixing plate is horizontally installed below the brush, and the fixing plate is mounted on one side of the inner wall of the box body via a triangular support frame. A baffle penetrates the top of the box body and is perpendicularly attached to one end of the fixing plate. A screen is horizontally installed below the fixing plate, and an electric vibrator is installed below the screen. This patent uses a motor to drive a roller to rotate, and the sorghum is dehulled through the interaction between the roller and the pressing plate.

[0004] The existing technology uses a motor to drive a roller to rotate, and the sorghum is dehulled through the interaction of the roller and the pressing plate. However, this existing sorghum dehulling and screening device still has significant technical defects in practical applications, making it difficult to meet the needs of high-quality sorghum processing. Specifically, the roller used in this device is an integral roller structure, and the distance between the roller and the pressing plate is fixed. This structural design means that during the dehulling process, regardless of the size or plumpness of the sorghum grains, they are subjected to the same force and the same spacing. For sorghum with smaller grains or lower plumpness, excessive force and too close spacing can easily cause breakage and damage to the sorghum grains; while for sorghum with larger grains or higher plumpness, increasing the spacing or decreasing the force to avoid damaging small grains may result in incomplete dehulling, leaving a large amount of sorghum with husks, requiring secondary processing and seriously affecting processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an automated sorghum dehulling and screening device. By setting the roller to be movable and driving the roller to move back and forth through an airbag to adjust the distance between the roller and the roller plate, the problem of traditional devices easily damaging sorghum grains is solved.

[0006] To address the problems of existing technologies, this invention provides an automated sorghum dehulling and screening device, comprising: a main body; a dehulling assembly disposed on the top of the main body for dehulling sorghum; a separation assembly disposed on one side of the main body for separating the dehulled sorghum from its outer shell; and a screening assembly disposed inside the main body for secondary separation of the sorghum. The dehulling assembly includes a bottom body and a top body. The bottom body has a feed inlet at its top. A dehulling unit is rotatably disposed within the bottom and top bodies. A circular cavity for dehulling sorghum is formed inside the bottom and top bodies. The dehulling unit includes a rotating shaft rotatably disposed laterally within the bottom and top bodies. Several rollers capable of reciprocating vertically relative to the rotating shaft are disposed on the rotating shaft. Several airbags capable of reciprocating the rollers are also disposed on the rotating shaft.

[0007] Preferably, the shelling unit includes a plurality of sleeves distributed along the length and circumferential direction of the rotation axis and a bracket that can rotate and cooperate with the rolling roller. The bracket is provided with a plurality of sliding rods along its length direction, and the sliding rods can be inserted into the sleeves and can reciprocate within the sleeves.

[0008] Preferably, one side of the airbag is fixed to the bracket, and the other side of the airbag is fixed to the rotating shaft.

[0009] Preferably, the rotating shaft is hollow inside and has a channel for introducing gas into the airbag. The shell removal unit also includes an inflation port located on the side of the bottom body and the top body and movably connected to the rotating shaft. The inflation port and the airbag are sealed by a sealing bearing. The shell removal unit also includes a first rotating drive fixed on the side away from the inflation port, and the output end of the first rotating drive is connected to the rotating shaft.

[0010] Preferably, a discharge port is provided on one side of the bottom of the bottom body, and the separation component also includes a connection port that cooperates with the discharge port.

[0011] Preferably, the separation assembly further includes a cyclone separator disposed outside the bottom body and the top body. The cyclone separator has a conical structure, with the top of the cyclone separator being larger than the bottom of the cyclone separator. An air outlet pipe is connected to the top of the cyclone separator, and a flow guide is connected to the bottom of the cyclone separator. One end of the flow guide extends into the main body and is disposed on the screening assembly.

[0012] Preferably, the separation component further includes a suction pump fixed on the main body, with the air inlet of the suction pump connected to the connection port, and the air outlet of the suction pump connected to a connecting pipe, one end of which is connected tangentially to the top of the cyclone separator.

[0013] Preferably, the screening assembly includes a first screen plate and a second screen plate that can reciprocate inside the main body, and the first screen plate and the second screen plate move in opposite directions. The screening assembly also includes discharge ports that are obliquely arranged at both ends of the main body. The first screen plate and the second screen plate are respectively provided with inclined plates that are inclined towards the discharge ports, and a number of screen holes are distributed on the inclined plates. The diameter of the screen holes on the first screen plate is larger than the diameter of the screen holes on the second screen plate.

[0014] Preferably, the screening assembly further includes a vibration assembly capable of driving the first screen plate and the second screen plate to reciprocate. The vibration assembly includes a connecting shaft connected to the first screen plate and the second screen plate and a transmission wheel rotatably disposed outside the main body. An eccentric shaft is also eccentrically disposed on the transmission wheel, and a transmission rod is rotatably disposed on the eccentric shaft. One end of the transmission rod is movably connected to the connecting shaft. The vibration assembly also includes a second rotary drive component fixed on the main body. A driven pulley is also disposed on the transmission wheel. The second rotary drive component is connected to the driven pulley on the transmission wheel via a driving pulley and a belt.

[0015] Preferably, the screening assembly further includes a discharge ramp disposed at the bottom of the second screen plate and inclined thereon, and the discharge ramp extends to the outside of the main body.

[0016] The advantages of this invention compared to the prior art are:

[0017] This application integrates a hulling unit within the assembly space of the bottom and top bodies. This hulling unit is equipped with several reciprocating supports to achieve flexible hulling, and each support is rotatably mounted with a pressing roller. An air bladder is also installed between the support and the rotating shaft to drive the reciprocating movement of the support. During the hulling process, by introducing gas at a preset pressure into the air bladder, the air bladder can be controlled to expand. The expansion force of the air bladder then pushes the support along a preset trajectory, ultimately adjusting the distance between the pressing roller and the inner wall of the bottom body (equivalent to a pressing plate in a traditional structure). Furthermore, the elasticity of the air bladder itself creates a flexible buffer effect when the pressing roller contacts the inner wall of the bottom body and applies a pressing force to the sorghum, effectively avoiding the sorghum breakage problem caused by excessive contact stress in traditional rigid pressing structures, significantly reducing the sorghum damage rate, and ensuring the thoroughness of the hulling operation. To further improve the separation efficiency and purity of the dehulled material, this application also includes a high-efficiency separation component. This component uses a cyclone separator as its core separation element and constructs a negative pressure conveying channel through a suction pump. Specifically, the suction pump stably draws the mixture of sorghum rice and sorghum husks output from the dehulling unit into the cyclone separator. This cyclone separator adopts a variable diameter structure design with an upper diameter larger than the lower diameter, and the mixture enters the separator tangentially at the upper end. Driven by the airflow, the mixture of sorghum rice and sorghum husks rotates at high speed within the cyclone separator. Based on the principle of centrifugal separation, the denser and heavier sorghum rice settles downwards along the separator wall under centrifugal force and is eventually discharged from the lower outlet of the cyclone separator, completing one stage of separation. The less dense and lighter sorghum husks move upwards with the airflow and are eventually discharged from the top outlet pipe of the cyclone separator, achieving efficient preliminary separation of sorghum rice and sorghum husks. After being separated once by a cyclone separator, the sorghum grains enter a screening assembly equipped with a first screen plate and a second screen plate, both of which can reciprocate and vibrate at a preset frequency. Under the action of vibration, the sorghum grains move in a dispersed manner on the surface of the screen plates. Larger impurities or sorghum grains that have not been completely hulled are intercepted by the first screen plate, while sorghum grains that meet the preset particle size range pass through the first screen plate and enter the second screen plate, where finer impurities are further removed. This process ultimately achieves the grading, purification, and rapid separation of the sorghum grains, effectively improving the purity and quality of the finished sorghum grains. Attached Figure Description

[0018] Figure 1 This is a first three-dimensional structural schematic diagram of an automated sorghum dehulling and screening device according to the present invention.

[0019] Figure 2 This is a first three-dimensional structural schematic diagram of an automated sorghum dehulling and screening device according to the present invention.

[0020] Figure 3This is a half-section structural diagram of an automated sorghum dehulling and screening device according to the present invention.

[0021] Figure 4 This is an exploded structural diagram of an automated sorghum dehulling and screening device according to the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the dehulling unit of an automated sorghum dehulling and screening device according to the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the separation component of an automated sorghum dehulling and screening device according to the present invention.

[0024] Figure 7 This invention relates to an automated sorghum hulling and screening device. Figure 4 Enlarged structural diagram at point A in the middle.

[0025] The components in the diagram are labeled as follows: 1. Main body; 2. Dehulling assembly; 21. Bottom body; 22. Top body; 221. Feed inlet; 23. Dehulling unit; 231. Rotating shaft; 2311. Sleeve; 232. First rotating drive component; 233. Support; 2331. Compactor roller; 234. Airbag; 235. Inflation port; 3. Separation assembly; 31. Cyclone separator; 32. Connection port; 33. Suction pump; 34. Connecting pipe; 35. Air outlet pipe; 36. Flow guide; 4. Screening assembly; 41. Discharge inclined plate; 42. Discharge port; 43. First screen plate; 44. Second screen plate; 45. Vibration assembly; 451. Second rotating drive component; 452. Transmission wheel; 453. Transmission rod; 454. Connecting shaft. Detailed Implementation

[0026] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1-7As shown, this invention provides an automated sorghum dehulling and screening device, comprising: a main body 1; a dehulling assembly 2 disposed on the top of the main body 1 for dehulling sorghum; a separation assembly 3 disposed on one side of the main body 1 for separating the dehulled sorghum from its outer shell; and a screening assembly 4 disposed inside the main body 1 for secondary separation of the sorghum. The dehulling assembly 2 includes a bottom body 21 and a top body 22. The bottom body 21 is also provided with a feed inlet 221 at its top. A dehulling unit 23 is rotatably disposed in the bottom body 21 and the top body 22. The bottom body 21 and the top body 22 form a circular cavity for dehulling sorghum. The bottom body 21 and the top body 22 cooperate with each other to form a "cavity frame" for the dehulling operation. The circular cavity they form inside conforms to the flow characteristics of sorghum particles and provides suitable space for the operation of the dehulling unit 23, ensuring that the sorghum can fully contact the dehulling components within the cavity, achieving efficient dehulling. The feed inlet 221 on the top body 22 is the only channel for sorghum to enter the hulling assembly 2. The sorghum to be processed enters the circular hulling cavity precisely through the feed inlet 221, providing raw materials for the hulling operation. The hulling unit 23 includes a rotating shaft 231 that is laterally rotatable in the bottom body 21 and the top body 22. Several rolling rollers 2331 are mounted on the rotating shaft 231 and can reciprocate vertically relative to the rotating shaft 231. These rollers are the "hulling tools" that directly act on the sorghum. They can reciprocate vertically relative to the rotating shaft 231. While rotating under the drive of the rotating shaft 231, they generate a combined "squeezing + kneading" force on the sorghum in the circular cavity through reciprocating movement. This force can effectively separate the hard outer shell of the sorghum from the inner sorghum grains, and avoid the problem of sorghum grain breakage that may be caused by simple crushing, ensuring the integrity of the sorghum grains after hulling. The rotating shaft 231 is also equipped with several air bladders 234 that enable the rolling roller 2331 to reciprocate. The air bladders 234 are the "power source" driving the rolling roller 2331 to reciprocate. The air bladders 234 change their volume by alternately inflating and deflating: when inflated, the air bladders 234 expand and push the rolling roller 2331 towards the inner wall of the circular cavity, increasing the force applied to the sorghum; when deflated, the air bladders 234 contract, and the rolling roller 2331 returns to its initial position under its own weight or the action of the reset structure. Through this dynamic change of the air bladders 234, the reciprocating movement of the rolling roller 2331 is achieved, and the force can be adaptively adjusted according to the size of the sorghum grains, achieving "flexible dehulling" and improving the dehulling effect.

[0028] The sorghum raw material to be processed enters smoothly into the circular dehulling cavity formed by the bottom body 21 and the top body 22 through the inlet 221 on the top body 22 of the dehulling assembly 2, preparing the raw material for subsequent dehulling operations. After the device is started, the power system drives the rotating shaft 231 in the hulling unit 23 to rotate at a uniform speed laterally. The rotating shaft 231 drives several rolling rollers 2331 on the shaft to rotate synchronously, so that the rolling rollers 2331 can contact the sorghum in various positions within the cavity. At the same time, several airbags 234 on the rotating shaft 231 alternately inflate and deflate at a preset frequency: when the airbags 234 inflate, their volume expands, generating an outward thrust on the rolling rollers 2331, causing the rolling rollers 2331 to move towards the inner wall of the cavity, applying squeezing and kneading force to the sorghum inside the cavity, causing the sorghum shell to break; when the airbags 234 deflate, their volume shrinks, the thrust disappears, and the rolling rollers 2331 return to their initial position under their own gravity or the action of the reset structure, avoiding excessive squeezing of the sorghum grains and causing breakage. Under the synergistic effect of the rotational motion of the rotating shaft 231 and the reciprocating movement of the rolling rollers 2331, the sorghum in the cavity can be hulled in an all-round and flexible manner, and most of the sorghum achieves separation of the outer shell from the grain. The sorghum mixture (sorghum grains, intact husks, and broken husks) that has been dehulled is discharged naturally from the dehulling assembly 2 and then enters the separation assembly 3 located on one side of the main body 1. The separation assembly 3 initiates the separation operation based on the difference in physical properties between the sorghum grains and the husks: the sorghum grains separated by the separation assembly 3 enter the screening assembly 4 for further separation.

[0029] The shelling unit 23 includes a plurality of sleeves 2311 distributed along the length and circumferential direction of the rotation axis 231 and a bracket 233 that can rotate with the rolling roller 2331. The bracket 233 is provided with a plurality of sliding rods along its length direction, and the sliding rods can be inserted into the sleeves 2311 and can reciprocate within the sleeves 2311.

[0030] The sleeves 2311 are arranged in groups of several, regularly distributed along the length (axial) and circumferential (radial) directions of the rotation axis 231, acting as "guide tracks" for the movement of the rolling roller 2331. Their core function is to provide a precise reciprocating movement channel for the sliding rods on the support 233, restricting the movement of the sliding rods to the direction perpendicular to the rotation axis 231 (i.e., towards or away from the inner wall of the shelling cavity), preventing the rolling roller 2331 from deviating, wobbling, or jamming during movement, and ensuring the stability and accuracy of the rolling action. The several sliding rods arranged along the length of the support 233 are "motion actuators" that cooperate with the sleeves 2311. The sliding rod is inserted into the sleeve 2311 and can reciprocate along the sleeve 2311. When the airbag 234 inflates, the thrust is transmitted to the sliding rod through the bracket 233, causing the sliding rod to extend outward along the sleeve 2311 and drive the rolling roller 2331 closer to the inner wall of the cavity. When the airbag 234 deflates and contracts, the sliding rod retracts inward along the sleeve 2311, and the rolling roller 2331 returns to its original position. This structure converts the driving force of the airbag 234 into the stable linear motion of the rolling roller 2331. At the same time, the force is distributed through the cooperation of multiple sliding rods and the sleeve 2311, preventing damage to individual components due to excessive load.

[0031] One side of the airbag 234 is fixed to the bracket 233, and the other side of the airbag 234 is fixed to the rotating shaft 231. The rotating shaft 231 is hollow inside, and it is also provided with a channel that can introduce gas into the airbag 234. The rotating shaft 231 adopts a hollow structure, forming a main gas flow channel inside, while the branch channels opened on the shaft connect the hollow main channel to each airbag 234, forming a "central air supply - branch distribution" pneumatic system. The core advantage of this design is that when the rotating shaft 231 rotates at high speed, gas can be stably delivered to each airbag 234 through the internal channel of the shaft. The shell removal unit 23 also includes an inflation port 235 located on the sides of the bottom body 21 and the top body 22 and movably connected to the rotating shaft 231. The inflation port 235 and the airbag 234 are sealed by a sealing bearing. The inflation port 235 is fixed to the body and does not rotate with the rotating shaft 231, but a dynamic seal is achieved between the sealing bearing and the rotating shaft 231, which ensures that the rotating shaft 231 can rotate freely while preventing gas leakage at the connection. The shell removal unit 23 also includes a first rotating drive component 232 fixed on the side away from the inflation port 235, and the output end of the first rotating drive component 232 is connected to the rotating shaft 231.

[0032] A discharge port is provided on one side of the bottom of the bottom body 21, and the separation assembly 3 also includes a connection port 32 that cooperates with the discharge port. The separation assembly 3 also includes a cyclone separator 31 disposed on the outside of the bottom body 21 and the top body 22. The cyclone separator 31 has a conical structure, with the top of the cyclone separator 31 being larger than the bottom of the cyclone separator 31. An air outlet pipe 35 is connected to the top of the cyclone separator 31, and a flow guide 36 is connected to the bottom of the cyclone separator 31. One end of the flow guide 36 extends into the main body 1 and is disposed on the screening assembly 4.

[0033] The separation component 3 also includes a suction pump 33 fixed to the main body 1. The inlet end of the suction pump 33 is connected to the connection port 32, and the outlet end of the suction pump 33 is connected to a connecting pipe 34. One end of the connecting pipe 34 is connected tangentially to the top of the cyclone separator 31. The suction pump 33 is fixed to the main body 1 and serves as the power source for the separation component 3. Its core function is to generate negative pressure airflow: the inlet end draws the shelled mixture from the discharge port through the connection port 32, and the outlet end forces the airflow containing the mixture into the cyclone separator 31 through the connecting pipe 34. The connecting pipe 34 is connected tangentially to the top of the cyclone separator 31. This design causes the airflow to form a spiral motion rotating along the inner wall when it enters the separator, providing initial kinetic energy for subsequent centrifugal separation and ensuring that the airflow can form a vortex along a preset trajectory, thus enhancing the separation effect. The cyclone separator 31 adopts a conical structure (the top diameter is larger than the bottom) and is the core separation component for achieving shell-rice separation. The key function of its conical design is that when the airflow containing impurities enters the separator, it forms a high-speed rotating vortex along the inner wall. Centrifugal force separates substances of different densities. The denser sorghum grains, due to the greater centrifugal force, are thrown against the wall and slide downwards along the conical inner wall, eventually exiting from the bottom outlet. The less dense outer shell (especially broken shells) rises with the airflow in the central area and is discharged from the top exhaust port, achieving complete separation. The conical structure also accelerates material settling, improving separation efficiency.

[0034] The screening assembly 4 includes a first screen plate 43 and a second screen plate 44 that can reciprocate inside the main body 1, and the first screen plate 43 and the second screen plate 44 move in opposite directions. The screening assembly 4 also includes discharge ports 42 that are obliquely arranged at both ends of the main body 1. The first screen plate 43 and the second screen plate 44 are respectively provided with inclined plates that are inclined towards the discharge ports 42, and a number of screen holes are distributed on the inclined plates. The diameter of the screen holes on the first screen plate 43 is larger than the diameter of the screen holes on the second screen plate 44. The screening assembly 4 also includes a vibration assembly 45 capable of driving the first screen plate 43 and the second screen plate 44 to reciprocate. The vibration assembly 45 includes a connecting shaft 454 connected to the first screen plate 43 and the second screen plate 44, and a transmission wheel 452 rotatably disposed outside the main body 1. An eccentric shaft is also eccentrically disposed on the transmission wheel 452, and a transmission rod 453 is rotatably disposed on the eccentric shaft. One end of the transmission rod 453 is movably connected to the connecting shaft 454. The vibration assembly 45 also includes a second rotary drive member 451 fixed to the main body 1. A driven pulley is also disposed on the transmission wheel 452. The second rotary drive member 451 is connected to the driven pulley on the transmission wheel 452 via a drive pulley and a belt. The screening assembly 4 also includes a discharge inclined plate 41 disposed at the bottom of the second screen plate 44 and inclined thereon, and the discharge inclined plate 41 extends to the outside of the main body 1.

[0035] The sorghum-rice mixture (containing a small amount of unhulled sorghum, qualified rice, and small broken husks) initially separated by the separation component 3 falls onto the first screen plate 43 of the screening component 4. The second rotary drive component 451 is activated, driving the transmission wheel 452 to rotate via belt transmission. The eccentric shaft drives the connecting shaft 454 to reciprocate through the transmission rod 453, thereby driving the first screen plate 43 to reciprocate. Under the action of vibration and the inclination of the inclined plate, the mixture on the first screen plate 43 moves towards the discharge port 42. Qualified sorghum rice and small broken husks fall through the large sieve holes into the second screen plate 44 below, while unhulled whole sorghum (particle size larger than the sieve holes) is intercepted and slides along the inclined plate towards the corresponding discharge port 42. Meanwhile, the second sieve plate 44 reciprocates in the opposite direction to the first sieve plate 43 under the drive of the vibration component 45; the mixture (qualified rice + broken husks) falling from the first sieve plate 43 moves on the second sieve plate 44, the small broken husks fall into the bottom of the main body 1 through the small sieve holes (for subsequent collection and processing), and the qualified sorghum rice (particle size larger than the sieve holes) is intercepted and slides along the inclined plate to the end.

[0036] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An automated sorghum dehulling and screening device, characterized in that, include: Main body (1), The hulling assembly (2) is set on the top of the main body (1) for hulling sorghum. The separation component (3) is set on one side of the main body (1) to separate the sorghum after dehulling from the outer shell; Screening component (4) is located inside the main body (1) and is used for secondary separation of sorghum. The hulling assembly (2) includes a bottom body (21) and a top body (22). The bottom body (21) is also provided with a feed inlet (221) at the top. A hulling unit (23) is rotatably provided in the bottom body (21) and the top body (22). A circular cavity for hulling sorghum is formed inside the bottom body (21) and the top body (22). The hulling unit (23) includes a rotating shaft (231) that is rotatably provided in the bottom body (21) and the top body (22). Several rolling rollers (2331) that can reciprocate in the vertical direction relative to the rotating shaft (231) are provided on the rotating shaft (231). Several airbags (234) that can reciprocate the rolling rollers (2331) are also provided on the rotating shaft (231).

2. The sorghum automated dehulling and screening device according to claim 1, characterized in that... The shelling unit (23) includes a plurality of sleeves (2311) distributed along the length and circumferential direction of the rotation axis (231) and a bracket (233) that can rotate and cooperate with the rolling roller (2331). The bracket (233) is provided with a plurality of sliding rods along its length direction, and the sliding rods can be inserted into the sleeves (2311) and can reciprocate within the sleeves (2311).

3. The sorghum automated dehulling and screening device according to claim 1, characterized in that... One side of the airbag (234) is fixed to the bracket (233), and the other side of the airbag (234) is fixed to the rotating shaft (231).

4. The sorghum automated dehulling and screening device according to claim 3, characterized in that... The rotating shaft (231) is hollow inside, and the rotating shaft (231) is also provided with a channel that can introduce gas into the airbag (234). The shell removal unit (23) also includes an inflation port (235) provided on the side of the bottom body (21) and the top body (22) and movably connected to the rotating shaft (231). The inflation port (235) and the airbag (234) are sealed by a sealing bearing. The shell removal unit (23) also includes a first rotating drive (232) fixed on the side away from the inflation port (235), and the output end of the first rotating drive (232) is connected to the rotating shaft (231).

5. The sorghum automated dehulling and screening device according to claim 1, characterized in that... The bottom body (21) is provided with a discharge port on one side, and the separation component (3) also includes a connection port (32) that cooperates with the discharge port.

6. The sorghum automated dehulling and screening device according to claim 1, characterized in that... The separation assembly (3) further includes a cyclone separator (31) disposed outside the bottom body (21) and the top body (22). The cyclone separator (31) has a conical structure, and the top of the cyclone separator (31) is larger than the bottom of the cyclone separator (31). The top of the cyclone separator (31) is connected to an air outlet pipe (35), and the bottom of the cyclone separator (31) is connected to a flow guide (36). One end of the flow guide (36) extends into the main body (1) and is disposed on the screening assembly (4).

7. The sorghum automated dehulling and screening device according to claim 6, characterized in that... The separation component (3) also includes a suction pump (33) fixed on the main body (1), and the air inlet of the suction pump (33) is connected to the connection port (32). The air outlet of the suction pump (33) is connected to a connecting pipe (34), and one end of the connecting pipe (34) is connected to the top of the cyclone separator (31) in a tangential direction.

8. The sorghum automated dehulling and screening device according to claim 1, characterized in that... The screening component (4) includes a first screen plate (43) and a second screen plate (44) that can reciprocate inside the main body (1), and the first screen plate (43) and the second screen plate (44) move in opposite directions. The screening component (4) also includes discharge ports (42) that are obliquely arranged at both ends of the main body (1). The first screen plate (43) and the second screen plate (44) are respectively provided with inclined plates that are inclined towards the discharge port (42), and a number of screen holes are distributed on the inclined plates. The diameter of the screen holes on the first screen plate (43) is larger than the diameter of the screen holes on the second screen plate (44).

9. The sorghum automated dehulling and screening device according to claim 8, characterized in that... The screening assembly (4) further includes a vibration assembly (45) capable of driving the first screen plate (43) and the second screen plate (44) to reciprocate. The vibration assembly (45) includes a connecting shaft (454) connected to the first screen plate (43) and the second screen plate (44) and a transmission wheel (452) rotatably disposed outside the main body (1). An eccentric shaft is also eccentrically disposed on the transmission wheel (452), and a transmission rod (453) is rotatably disposed on the eccentric shaft. One end of the transmission rod (453) is movably connected to the connecting shaft (454). The vibration assembly (45) further includes a second rotary drive member (451) fixed on the main body (1). A driven pulley is also disposed on the transmission wheel (452). The second rotary drive member (451) is connected to the driven pulley on the transmission wheel (452) through a drive pulley and a belt.

10. The sorghum automated dehulling and screening device according to claim 8, characterized in that... The screening assembly (4) further includes a discharge inclined plate (41) disposed at the bottom of the second screen plate (44) and inclined thereon, and the discharge inclined plate (41) extends to the outside of the main body (1).

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