A screening device for grain processing

Abstract

The present invention relates to the field of screening technology, and specifically to a screening device for grain processing, including a base, a barrel, an angle adjustment component, a semi-circular tube, a rotating shaft and a screen component. The barrel is cylindrical, and a feed port is provided at the bottom of the barrel. The angle adjustment component is arranged between the base and the barrel, and the angle adjustment component is used to adjust the inclination of the barrel. The semi-circular tube is coaxially arranged in the barrel, and the notch of the semi-circular tube is upward. One end of the semi-circular tube is open and passes through the barrel. The rotating shaft is sleeved on the outside of the semi-circular tube, and the rotating shaft can rotate around its axis. The present invention arranges a plurality of screen components rotating around the rotating shaft in the barrel, and the material is brought to various places around the barrel by the first screen in the screen component, and the material is screened by the reciprocating swing of the first screen. Compared with the existing screening machine, the effective screening area is larger and the screening efficiency of the material is higher.

Description

Technical Field

[0001] The invention relates to the technical field of screening, in particular to a screening device for grain processing. Background Art

[0002] Cereals are a broad concept, including but not limited to rice, millet and sorghum. Cereals harvested from farmland, such as rice, have a shell on the outside of the rice grains. Vibratory screening is usually required to separate the shell from the rice grains for subsequent processing.

[0003] The prior art mostly uses a drum-type screening machine. When in use, unshelled grains are added to the screen drum, and then the screen drum is rotated. The rotation of the screen drum drives the grains to rotate. The grains follow the screen drum to rotate to a certain height and then fall down and collide and rub with the grains at the bottom of the screen drum, so that the outer shell on the surface of the grain falls off, and the shelled grains fall through the sieve holes on the surface of the screen drum, and the outer shell of the grain remains in the screen drum, thereby achieving the separation of the grains and the outer shell. However, there are the following problems: during screening, only the upper grains in the lower area of ​​the screen drum can contact and rub with the grains that fall after rotation, while the non-lower area of ​​the screen drum cannot effectively screen the grains, so the space utilization rate of the screen drum is low, which leads to low screening efficiency of the screen drum. In addition, the separation of grains and outer shells is not complete, and a certain amount of grains will be mixed in the outer shell discharged from the screen drum. Summary of the invention

[0004] Based on this, it is necessary to provide a screening device for grain processing to address the problems existing in the current grain screening equipment, so as to solve the problems of low screening efficiency and incomplete separation of grain kernels and husks when the existing screening equipment is used to screen grains.

[0005] The above purpose is achieved by the following technical solutions:

[0006] Base;

[0007] The barrel is cylindrical and has a feed port at the bottom;

[0008] An angle adjustment component, which is arranged between the base and the barrel and is used to adjust the inclination of the barrel;

[0009] A semicircular tube, which is coaxially arranged in the barrel, with the notch of the semicircular tube facing upwards and one end of the semicircular tube opening and passing through the barrel;

[0010] A rotating shaft is sleeved on the outside of the semicircular tube and can rotate around its axis;

[0011] A screen assembly, wherein there are multiple screen assemblies, and the multiple screen assemblies are arranged at equal intervals on the outside of the rotating shaft in the circumferential direction. The screen assembly comprises a cross bar, two vertical bars, a first screen, a second screen and an elastic material guide plate. The two vertical bars are arranged at intervals along the axis of the rotating shaft, the axis of the cross bar is parallel to the axis of the rotating shaft, and the cross bar is located between the two vertical bars. One end of the vertical bar is arranged on the rotating shaft, and the other end of the vertical bar is fixedly connected to the cross bar. One side of the first screen, the second screen and the elastic material guide plate are connected to the rotating shaft, and the other sides of the first screen, the second screen and the elastic material guide plate are connected to the cross bar. The first screen, the second screen and the elastic material guide plate are all arc-shaped, and a plurality of flexible clamping rods are evenly arranged on the surface of the second screen away from the first screen.

[0012] A feed slot is provided at the connection between the elastic material guide plate and the rotating shaft, and the material falling onto the elastic material guide plate after being screened by the first screen or the second screen can enter the semicircular tube through the feed slot;

[0013] A linear reciprocating drive member is provided between the middle of the first screen and the second screen and the rotating shaft, and the linear reciprocating drive member is used to drive the middle of the first screen and the second screen to slide back and forth along the axis of the vertical rod;

[0014] The first screen and the second screen have a first posture and a second posture, the barrel has a first posture switching point and a second posture switching point in its circumference, and a posture adjustment component is provided between the middle of the first screen and the second screen and the vertical rod, and the posture adjustment component is used to switch the posture of the first screen and the second screen;

[0015] When the first screen and the second screen reach the first posture switching point, the first screen and the second screen switch from the first posture to the second posture;

[0016] When the first screen and the second screen reach the second posture switching point, the first screen and the second screen switch from the second posture to the first posture.

[0017] In one embodiment, the angle adjustment assembly includes a lower bracket and a first hydraulic rod. The lower bracket is arranged at the lower part of the barrel. The lower bracket is hinged to the base along one side of the barrel axis. The telescopic end of the first hydraulic rod is hinged to the lower bracket along the other side of the barrel axis. The fixed end of the first hydraulic rod is hinged to the base.

[0018] In one embodiment, the linear reciprocating drive member includes a second hydraulic rod, a sliding ring, a guide frame and a slider. The sliding ring is slidably connected to the vertical rod. The guide frame is arranged on the sliding ring. The straight line where the length direction of the guide frame is located is perpendicular to the axis of the vertical rod. A guide groove is provided on the guide frame. The guide groove extends along the length direction of the guide frame. The slider is slidably connected in the guide groove. The slider is connected to the middle part of the first screen and the second screen.

[0019] In one embodiment, the posture adjustment component includes a winch box, a first motor is arranged in the winch box, the output end of the first motor is connected to a winch roller, a traction rope is wound around the winch roller, both ends of the traction rope are connected to the upper and lower ends of the slider, and is used to drive the slider to move along the guide groove by winding the traction rope.

[0020] In one embodiment, the mesh diameter of the first screen is smaller than the mesh diameter of the second screen;

[0021] A partition plate is centrally arranged on the inner peripheral wall of the semicircular tube.

[0022] In one of the embodiments, a first bevel gear is coaxially arranged on the outer circumference of the rotating shaft, a second motor is arranged on the barrel, a second bevel gear is arranged at the output end of the second motor, and the second bevel gear is meshed with the first bevel gear.

[0023] In one of the embodiments, a grain husk collecting groove is provided on the outer peripheral wall of the barrel and located at the second posture switching point b. The grain husk collecting groove is connected to the interior of the barrel, and a grain husk discharge port is provided at one end of the grain husk collecting groove.

[0024] In one embodiment, the first posture switching point and the second posture switching point are located at two ends of the barrel diameter.

[0025] In one of the embodiments, a ball head is provided at one end of the flexible clamping rod away from the second screen.

[0026] In one of the embodiments, the semicircular tube is arranged on the barrel through a connecting frame.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention arranges a plurality of screen assemblies rotating around a rotating shaft in the barrel, and the material is brought to various circumferential locations of the barrel by the first screen in the screen assembly and the material is screened by the reciprocating swing of the first screen. Compared with the existing screening machine, the effective screening area is larger and the screening efficiency of the material is higher.

[0029] 2. The present invention can make the separation of grain husk and grain kernels more thorough by providing a posture adjustment component and providing a flexible clamping rod on the second screen, thereby reducing the amount of grain kernels mixed in the grain husk falling into the grain husk collecting trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an overall schematic diagram of a screening device for grain processing of the present invention;

[0031] Figure 2 A cross-sectional view of a screening device for grain processing according to the present invention;

[0032] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle;

[0033] Figure 4 This is a schematic diagram of the connection between the horizontal rod and the vertical rod in a screening device for grain processing of the present invention;

[0034] Figure 5 This is a schematic diagram of the semicircular tube structure in a screening device for grain processing of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of a rotating shaft in a screening device for grain processing of the present invention;

[0036] Figure 7 Figure 6 Schematic diagram of the enlarged structure at B in the middle;

[0037] Figure 8 It is a schematic structural diagram of a linear reciprocating drive member in a screening device for grain processing of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of a first screen and a second screen in a screening device for grain processing of the present invention;

[0039] Fig.10 It is a schematic diagram of the position of an elastic material guide plate in a screening device for grain processing of the present invention;

[0040] Fig.11 The present invention is a schematic structural diagram of a posture adjustment component in a screening device for grain processing.

[0041] in:

[0042] 100, base; 110, semicircular tube; 1101, partition plate; 1102, connecting frame; 120, rotating shaft; 121, feed slot; 130a, first posture switching point; 130b, second posture switching point; 140, grain shell collecting slot; 150, grain shell discharge port; 160, feed port; 200, barrel; 300, angle adjustment assembly; 310, lower bracket; 320, first hydraulic rod; 400, screen assembly; 410, cross bar; 420, vertical bar; 430 , first screen; 440, second screen; 450, elastic guide plate; 460, flexible clamping rod; 461, ball head; 470, linear reciprocating drive member; 471, second hydraulic rod; 472, sliding ring; 473, guide frame; 4731, guide groove; 474, slider; 480, posture adjustment assembly; 481, winch box; 482, first motor; 483, winch roller; 484, traction rope; 510, first bevel gear; 520, second bevel gear; 530, second motor. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] like Figure 1-Figure 11As shown, a screening device for grain processing includes a base 100, a barrel 200, an angle adjustment component 300, a semicircular tube 110, a rotating shaft 120 and a screen component 400. The barrel 200 is cylindrical, and a feed port 160 is provided at the lower part of the barrel 200. The angle adjustment component 300 is arranged between the base 100 and the barrel 200. The angle adjustment component 300 is used to adjust the inclination of the barrel 200. The semicircular tube 110 is coaxially arranged in the barrel 200, the notch of the semicircular tube 110 faces upward, one end of the semicircular tube 110 is open and passes through the barrel 200, the rotating shaft 120 is sleeved on the outside of the semicircular tube 110, and the rotating shaft 120 can rotate around its axis. There are multiple screen components 400, and the multiple screen components 400 are arranged at equal intervals in the circumferential direction. Outside the rotating shaft 120, the screen assembly 400 includes a cross bar 410, two vertical bars 420, a first screen 430, a second screen 440 and an elastic guide plate 450, the two vertical bars 420 are arranged at intervals along the axis of the rotating shaft 120, the axis of the cross bar 410 is parallel to the axis of the rotating shaft 120, and the cross bar 410 is located between the two vertical bars 420, one end of the vertical bar 420 is set on the rotating shaft 120, and the other end of the vertical bar 420 is fixedly connected to the cross bar 410, one side of the first screen 430, the second screen 440 and the elastic guide plate 450 are connected to the rotating shaft 120, and the other sides of the first screen 430, the second screen 440 and the elastic guide plate 450 are connected to the cross bar 410, the first screen 430, the second screen 440 and the elastic guide plate 450 are connected to the cross bar 410, and the first screen 430, the second screen 440 and the elastic guide plate The material plates 450 are all arc-shaped, and a plurality of flexible clamping rods 460 are evenly arranged on the surface of one side of the second screen 440 away from the first screen 430. A feed slot 121 is arranged at the connection between the elastic material guide plate 450 and the rotating shaft 120. The materials that fall onto the elastic material guide plate 450 after being screened by the first screen 430 or the second screen 440 can enter the semicircular tube 110 through the feed slot 121. A linear reciprocating drive member 470 is arranged between the middle part of the first screen 430 and the second screen 440 and the rotating shaft 120. The linear reciprocating drive member 470 is used to drive the middle part of the first screen 430 and the second screen 440 to slide back and forth along the axis of the vertical rod 420. The first screen 430 and the second screen 440 have a first posture and a second posture. When in the first posture, the surface area of ​​the first screen 430 is smaller than the surface area of ​​the second screen 440. When in the second posture, the surface area of ​​the first screen 430 is larger than the surface area of ​​the second screen 440. The barrel 200 has a first posture switching point 130a and a second posture switching point 130b in its circumferential direction. The first posture switching point 130a and the second posture switching point 130b are located at both ends of the diameter of the barrel 200. A posture adjustment component 480 is provided between the middle of the first screen 430 and the second screen 440 and the vertical rod 420. The posture adjustment component 480 is used to switch the postures of the first screen 430 and the second screen 440. When the first screen 430 and the second screen 440 reach the first posture switching point 130a position,The first screen 430 and the second screen 440 switch from the first posture to the second posture. When the first screen 430 and the second screen 440 reach the second posture switching point 130b, the first screen 430 and the second screen 440 switch from the second posture to the first posture.

[0047] It should also be noted that the first screen 430 and the second screen 440 should be made of a material with certain elastic properties, such as synthetic rubber, so that the surface areas of the second screen 440 and the first screen 430 can be changed under force.

[0048] It should also be noted that a grain husk collecting groove 140 is provided on the outer wall of the barrel 200 and at the location of the second posture switching point 130b. The grain husk collecting groove 140 is connected to the interior of the barrel 200, and a grain husk discharge outlet 150 is opened at one end of the grain husk collecting groove 140.

[0049] When in use, the staff first adjusts the inclination of the barrel 200 through the angle adjustment component 300, so that the height of one end of the barrel 200 provided with the feed port 160 is higher than the other end, and then manually feeds or uniformly feeds the grains to be screened (hereinafter referred to as materials) into the feed port 160 through the feeding equipment. The purpose of tilting the barrel 200 is to allow the materials entering the barrel 200 through the feed port 160 to be evenly distributed along the axis direction of the barrel 200. Next, the rotating shaft 120 is rotated clockwise at a uniform speed, and the rotating shaft 120 drives the screen assembly 400 to rotate synchronously. The working process of the screen assembly 400 is described below by taking one of the screen assemblies 400 as an example. Figure 2As shown, after the first screen 430 and the second screen 440 in the screen assembly 400 rotate to the second posture switching point 130b, the posture adjustment assembly 480 switches the first screen 430 and the second screen 440 in the screen assembly 400 from the second posture to the first posture. At this time, the surface area of ​​the first screen 430 is smaller than the surface area of ​​the second screen 440. As the rotating shaft 120 continues to rotate, the first screen 430 contacts the material at the bottom of the barrel 200 and shovels the material at the bottom of the barrel 200 into the first screen 430. Next, the material in the first screen 430 rotates upward clockwise with the first screen 430. At the same time, the linear reciprocating drive member 470 is started, and the linear The reciprocating drive member 470 drives the middle part of the first screen 430 and the second screen 440 to slide back and forth along the axis of the vertical rod 420, so that the middle part of the first screen 430 swings back and forth along the axis of the vertical rod 420. At this time, the material located in the first screen 430 is subjected to force vibration (for separating the husk) and the grains, and the materials rub against each other (for peeling). Under the action of the vibration force, the separated grains fall from the mesh holes of the first screen 430 onto the elastic guide plate 450. When the elastic guide plate 450 rotates with the rotating shaft 120 to be inclined upward, the grains falling into the elastic guide plate 450 enter the semicircular tube 110 through the feed slot 121, thereby realizing the separation of the grain husk and the grains. In summary, the device is equipped with multiple screen assemblies 400 rotating around the rotating shaft 120 in the barrel 200. The material is brought to various circumferential locations of the barrel 200 through the first screen 430 in the screen assembly 400, and the material is screened through the reciprocating swing of the first screen 430. Compared with the existing screening machines, the effective screening area is larger and the screening efficiency of the material is higher.

[0050] As the rotating shaft 120 continues to rotate clockwise, the first screen 430 follows the rotating shaft 120 to rotate to the position of the first posture switching point 130a. At this time, the posture adjustment component 480 switches the postures of the first screen 430 and the second screen 440, so that the first screen 430 and the second screen 440 switch to the second posture. At this time, the first screen 430 in the screen assembly 400 is on the outside and the second screen 440 is on the inside. During the posture switching of the first screen 430, the first screen 430 in the screen assembly 400 pushes the material inside it into the second screen 440 in the screen assembly 400 along its rotation direction and beyond the first posture switching point 130a. At this time, the second screen 440 in the screen assembly 400 beyond the first posture switching point 130a contacts with the material. Since the second screen 440 is located on the inside, its surface area is reduced, so the flexible clamping rods 46 uniformly distributed on the second screen 440 0 is in an inward state, at this time, the flexible clamping rod 460 blocks the grain husk and prevents the grain husk from falling, and only allows the grain grains to fall from the gaps between the flexible clamping rods 460, and the grain grains fall onto the elastic guide plate 450 through the mesh holes on the surface of the second screen 440 and enter the feed slot 121 along the elastic guide plate 450, and further fall into the semicircular tube 110 through the feed slot 121. When the second screen 440 filled with material rotates to the position of the second posture switching point 130b, the posture of the first screen 430 and the second screen 440 switches from the second posture to the first posture. At this time, the second screen 440 is located on the outside, the first screen 430 is located on the inside, the outer surface area of ​​the second screen 440 increases, and the flexible clamping rods 460 evenly distributed on the second screen 440 are in an outward state. When the second screen 440 rotates to tilt downward, the grain husk on the surface of the flexible clamping rod 460 falls into the grain husk collecting groove 140. In summary, by providing the flexible clamping rod 460 on the second screen 440 , the grain husk and the grain kernels can be separated more thoroughly, and the amount of grain kernels mixed in the grain husk falling into the grain husk collecting trough 140 can be reduced.

[0051] It should be added that a ball head 461 is provided at one end of the flexible clamping rod 460 away from the second screen 440 . The provision of the ball head 461 can facilitate the detachment of the grain husk from the flexible clamping rod 460 .

[0052] It should also be noted that if Figure 5 As shown, the semicircular tube 110 includes a semicircular tube segment, a solid column segment and a hollow tube segment. The solid column segment is arranged at one end of the semicircular tube segment, and the hollow tube segment is arranged at the other end of the semicircular tube segment. The semicircular tube 110 is arranged on the barrel 200 through a connecting frame 1102. Specifically, the connecting frame 1102 is arranged on the outside of the hollow tube segment, and the other end of the connecting frame 1102 away from the hollow tube segment is arranged on the barrel 200.

[0053] To facilitate the discharge of the grains in the semicircular tube 110, in a further embodiment, an auger (not shown in the figure) is rotatably provided in the semicircular tube 110, and the rotation of the auger causes the material to be discharged from the hollow tube section.

[0054] In a further embodiment, Figure 1 As shown, the angle adjustment assembly 300 includes a lower bracket 310 and a first hydraulic rod 320. The lower bracket 310 is arranged at the lower part of the barrel 200. The lower bracket 310 is hinged to the base 100 along one side of the axis of the barrel 200. The telescopic end of the first hydraulic rod 320 is hinged to the lower bracket 310 along the other side of the axis of the barrel 200. The fixed end of the first hydraulic rod 320 is hinged to the base 100.

[0055] When the barrel 200 needs to be tilted, the staff starts the first hydraulic rod 320 to extend the telescopic end of the first hydraulic rod 320. Under the thrust of the first hydraulic rod 320, the barrel 200 rotates upward around the hinge point with the base 100, so that the barrel 200 is in a tilted state, so that the material entering the barrel 200 through the feed port 160 can be evenly distributed along the axis direction of the barrel 200.

[0056] In a further embodiment, Figure 8 As shown, the linear reciprocating drive member 470 includes a second hydraulic rod 471, a sliding ring 472, a guide frame 473 and a slider 474. The sliding ring 472 is slidably connected to the vertical rod 420. The guide frame 473 is arranged on the sliding ring 472. The straight line where the length direction of the guide frame 473 is located is perpendicular to the axis of the vertical rod 420. A guide groove 4731 is opened on the guide frame 473. The guide groove 4731 extends along the length direction of the guide frame 473. The slider 474 is slidably connected in the guide groove 4731. The slider 474 is connected to the first screen 430 and the middle part of the second screen 440.

[0057] When the middle part of the first screen 430 and the second screen 440 need to swing back and forth, the staff starts the second hydraulic rod 471, so that the telescopic end of the second hydraulic rod 471 reciprocates and retracts, and the telescopic end of the second hydraulic rod 471 drives the sliding ring 472 to move, and the sliding ring 472 reciprocates along the axis of the vertical rod 420, and the sliding ring 472 drives the guide frame 473 to reciprocate, and the guide frame 473 drives the slider 474 to reciprocate, and the slider 474 is connected to the middle part of the first screen 430 and the second screen 440. Specifically, Fig. 9 As shown, connecting pins (not numbered in the figure) are provided at both ends of the first screen 430 and the second screen 440. Figure 8As shown, a connecting hole (not numbered in the figure) is provided on the slider 474, and a connecting pin is assembled in the connecting hole, so that when the slider 474 moves back and forth, it can drive the middle part of the first screen 430 and the second screen 440 to swing back and forth.

[0058] In a further embodiment, Figure 8 and Fig.11 As shown, the posture adjustment component 480 includes a winch box 481, in which a first motor 482 is arranged, and an output end of the first motor 482 is fixedly connected to a winch roller 483, and a traction rope 484 is wound around the winch roller 483. Both ends of the traction rope 484 are connected to the upper and lower ends of the slider 474, which is used to drive the slider 474 to move along the guide groove 4731 by winding the traction rope 484.

[0059] When the posture adjustment component 480 is required to switch the working postures of the first screen 430 and the second screen 440, such as Figure 8 As shown, at this time, the slider 474 needs to move along the guide groove 4731 to the top position of the guide groove 4731. Specifically, the staff starts the first motor 482, and the first motor 482 drives the hoisting roller 483 to rotate. The rotation of the hoisting roller 483 shortens the traction rope 484 passing through the upper end of the hoisting box 481, and the traction rope 484 passing through the lower end of the hoisting box 481 extends, so that the traction rope 484 drives the slider 474 to move along the guide groove 4731 to the top position of the guide groove 4731, and then the slider 474 drives the first screen 430 and the middle part of the second screen 440 to move, so that the first screen 430 and the second screen 440 can switch between the first posture and the second posture.

[0060] It should also be added that in order to enable the first screen 430 and the second screen 440 to complete the posture switching at the positions of the first posture switching point 130a and the second posture switching point 130b, specifically, a timing program can be set in the control module of the first motor 482, and the time required for the screen assembly 400 to move from the first posture switching point 130a to the second posture switching point 130b is calculated according to the rotation of the rotating shaft 120, and this time duration is set as a preset time duration. After each preset time duration, the first motor 482 is started once, and the rotation directions of the first motor 482 are opposite and equidistant between two adjacent starts.

[0061] In a further embodiment, Figure 2 and Figure 3 As shown, the mesh diameter of the first screen 430 is smaller than the mesh diameter of the second screen 440 , and a partition plate 1101 is centrally disposed on the inner circumferential wall of the semicircular tube 110 .

[0062] This arrangement is for distinguishing the grain sizes of the grains, so that small grains or half grains fall after being sieved by the first sieve 430, while large grains fall after being sieved by the second sieve 440, thereby facilitating the quality control of the sieved grains.

[0063] In a further embodiment, Figure 1 and Figure 3 As shown, a first bevel gear 510 is coaxially arranged on the outer periphery of the rotating shaft 120 , a second motor 530 is arranged on the barrel 200 , a second bevel gear 520 is arranged at the output end of the second motor 530 , and the second bevel gear 520 is meshed with the first bevel gear 510 .

[0064] When the rotating shaft 120 needs to rotate, the staff starts the second motor 530, the second motor 530 drives the first bevel gear 510 to rotate clockwise, the first bevel gear 510 drives the second bevel gear 520 to rotate, and the second bevel gear 520 drives the rotating shaft 120 to rotate, thereby realizing the circumferential uniform rotation of the rotating shaft 120.

[0065] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A screening device for grain processing, characterized in that: include: Base; The barrel is cylindrical and has a feed port at the bottom; An angle adjustment component, which is arranged between the base and the barrel, and is used to adjust the inclination of the barrel; A semicircular tube, which is coaxially arranged in the barrel, with the notch of the semicircular tube facing upwards and one end of the semicircular tube opening and passing through the barrel; A rotating shaft is sleeved on the outside of the semicircular tube and can rotate around its axis; A screen assembly, wherein there are multiple screen assemblies, and the multiple screen assemblies are arranged at equal intervals on the outside of the rotating shaft in the circumferential direction. The screen assembly comprises a cross bar, two vertical bars, a first screen, a second screen and an elastic material guide plate. The two vertical bars are arranged at intervals along the axis of the rotating shaft, the axis of the cross bar is parallel to the axis of the rotating shaft, and the cross bar is located between the two vertical bars. One end of the vertical bar is arranged on the rotating shaft, and the other end of the vertical bar is fixedly connected to the cross bar. One side of the first screen, the second screen and the elastic material guide plate are connected to the rotating shaft, and the other sides of the first screen, the second screen and the elastic material guide plate are connected to the cross bar. The first screen, the second screen and the elastic material guide plate are all arc-shaped, and a plurality of flexible clamping rods are evenly arranged on the surface of the second screen away from the first screen. A feed slot is provided at the connection between the elastic material guide plate and the rotating shaft, and the material falling onto the elastic material guide plate after being screened by the first screen or the second screen can enter the semicircular tube through the feed slot; A linear reciprocating drive member is provided between the middle of the first screen and the second screen and the rotating shaft, and the linear reciprocating drive member is used to drive the middle of the first screen and the second screen to slide back and forth along the axis of the vertical rod; The first screen and the second screen have a first posture and a second posture, the barrel has a first posture switching point and a second posture switching point in its circumference, and a posture adjustment component is provided between the middle of the first screen and the second screen and the vertical rod, and the posture adjustment component is used to switch the posture of the first screen and the second screen; When the first screen and the second screen reach the first posture switching point, the first screen and the second screen switch from the first posture to the second posture; When the first screen and the second screen reach the second posture switching point, the first screen and the second screen switch from the second posture to the first posture; When the first screen and the second screen switch to the second posture, the flexible clamping rod is in an inward state to block the grain husk from falling. When the first screen and the second screen switch to the first posture, the flexible clamping rod is in an outward state to allow the grain husk to fall.

2. A screening device for grain processing according to claim 1, characterized in that: The angle adjustment assembly includes a lower bracket and a first hydraulic rod. The lower bracket is arranged at the lower part of the barrel. The lower bracket is hinged to the base along one side of the barrel axis. The telescopic end of the first hydraulic rod is hinged to the lower bracket along the other side of the barrel axis. The fixed end of the first hydraulic rod is hinged to the base.

3. A screening device for grain processing according to claim 1, characterized in that: The linear reciprocating drive member includes a second hydraulic rod, a sliding ring, a guide frame and a slider. The sliding ring is slidably connected to the vertical rod. The guide frame is arranged on the sliding ring. The straight line where the length direction of the guide frame is located is perpendicular to the axis of the vertical rod. A guide groove is provided on the guide frame. The guide groove extends along the length direction of the guide frame. The slider is slidably connected in the guide groove. The slider is connected to the middle part of the first screen and the second screen.

4. A screening device for grain processing according to claim 3, characterized in that: The posture adjustment component includes a winch box, a first motor is arranged in the winch box, the output end of the first motor is connected to a winch roller, a traction rope is wound around the winch roller, both ends of the traction rope are connected to the upper and lower ends of the slider, and is used to drive the slider to move along the guide groove by winding the traction rope.

5. The screening device for grain processing according to claim 1, characterized in that: The mesh diameter of the first screen is smaller than the mesh diameter of the second screen; A partition plate is centrally arranged on the inner peripheral wall of the semicircular tube.

6. The screening device for grain processing according to claim 1, characterized in that: A first bevel gear is coaxially arranged on the outer periphery of the rotating shaft, a second motor is arranged on the barrel, a second bevel gear is arranged at the output end of the second motor, and the second bevel gear is meshed with the first bevel gear.

7. The screening device for grain processing according to claim 1, characterized in that: A grain husk collecting groove is arranged on the outer peripheral wall of the barrel and located at the second posture switching point b. The grain husk collecting groove is connected with the inside of the barrel, and a grain husk discharge port is opened at one end of the grain husk collecting groove.

8. The screening device for grain processing according to claim 7, characterized in that: The first posture switching point and the second posture switching point are located at two ends of the barrel diameter.

9. The screening device for grain processing according to claim 1, characterized in that: A ball head is arranged at one end of the flexible clamping rod away from the second screen.

10. The screening device for grain processing according to claim 1, characterized in that: The semicircular tube is arranged on the barrel through a connecting frame.

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