Automatic grain classifier

Abstract

The utility model discloses an automatic grain classifier which comprises a machine frame, and a storage bin, a distributing mechanism, a moving screening mechanism and a feeding mechanism are arranged on the machine frame from top to bottom. The material distributing mechanism comprises a material distributing bin and a material bin door, and opening or closing of the outlet end of the material distributing bin is achieved through the material bin door; the moving screening mechanism comprises a moving screen, the middle section of the bottom of the moving screen is fixed to a rotating shaft, the rotating shaft is rotationally installed on the rack, the moving screen comprises a screen mesh and a screen frame located around the screen mesh, the screen frame and the screen mesh jointly define a screening cavity with the top end open, and discharging gaps are reserved between the left end and the right end of the screen mesh and the bottom of the screen frame. The rotating shaft is driven by the moving screen driving mechanism to rotate, so that the moving screen is driven to swing left and right, and materials in the screening cavity are screened. The feeding mechanism comprises material guiding pipes which are oppositely arranged left and right, and material receiving boxes are arranged below the outlet ends of the bottom ends of the two material guiding pipes correspondingly. Compared with the prior art, the grain sorting device has the advantage that automatic sorting of various grains is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to an automatic grain sorter. Background Art

[0002] Currently, the level of mechanization in grain procurement at grassroots grain depots in China is low, and much of the grain removal is still done manually, resulting in low warehousing efficiency and high labor intensity. Existing sorting and light impurity removal equipment primarily consists of air separation and screening. Air separation utilizes the difference in suspension speed between the material and impurities to remove impurities with the help of wind. However, most current air separation and cleaning equipment is bulky, heavy, and inconvenient to transport, making it unsuitable for farmers or small grain depots. Screening utilizes a mesh to separate materials, but current screening equipment is generally only capable of screening materials of a fixed size and cannot accommodate a wide range of specifications. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automatic grain sorter to achieve the automatic sorting function of multiple grains.

[0004] The utility model is realized through the following technical solutions:

[0005] An automatic grain sorter comprises a frame, on which a storage bin, a material separation mechanism, a motion screening mechanism and a material feeding mechanism are arranged from top to bottom;

[0006] The material distribution mechanism includes a distribution bin and a bin door. The distribution bin is a bin body with a larger upper portion and a smaller lower portion. The upper end of the distribution bin is the inlet end and is connected to the outlet at the bottom of the storage bin. The lower end of the distribution bin is the outlet end. The outlet end of the distribution bin is opened or closed by the bin door.

[0007] The motion screening mechanism includes a motion screen, the middle section of the bottom of the motion screen is fixed on a rotating shaft extending forward and backward, the rotating shaft is rotatably mounted on a frame, the motion screen includes a screen and a screen frame located around the screen, the screen frame and the screen together form a screening cavity with an open top, and gaps are left between the left and right ends of the screen and the bottom of the screen frame as a discharge gap. The rotating shaft is driven to rotate by the motion screen driving mechanism, thereby driving the motion screen to swing left and right, thereby screening the material in the screening cavity;

[0008] The feeding mechanism includes left and right material guide pipes arranged opposite to each other, the top inlet ends of the two material guide pipes are respectively connected with the discharge gaps on the left and right sides of the moving screen, and material receiving boxes are respectively provided below the bottom outlet ends of the two material guide pipes.

[0009] As a preferred solution for the above-mentioned sorter, in the moving screen, material blocking doors are respectively provided on the left and right sides of the screen frame, and the top ends of the material blocking doors are hinged to the screen frame through hinge shafts extending forward and backward. When the screen of the moving screen is in a horizontal state, the two material blocking doors are respectively fitted with the left and right sides of the moving screen, thereby blocking the two discharge gaps.

[0010] As a preferred solution for the above-mentioned sorter, the material blocking door includes two arc-shaped material blocking plates arranged symmetrically on the left and right, the top ends of the two material blocking plates converge together, and the bottom ends of the two material blocking plates are respectively bent and extended outward. The material blocking door blocks the discharge gap through the material blocking plate close to the side of the moving screen.

[0011] As a preferred embodiment of the above-mentioned sorter, in the moving screen, the screen includes a screen plate, the upper surface of the screen plate is provided with a plurality of guide ridges, the plurality of guide ridges are arranged at intervals along the front-to-back direction, each guide ridge extends along the left-to-right direction, and the channel between two adjacent guide ridges forms a guide channel, and a plurality of through grooves are provided at intervals at the bottom of the guide channel as screening holes.

[0012] As a preferred solution of the above-mentioned sorter, soft connecting strips are respectively provided at the left and right ends of the screen to seal the gap between the material blocking door and the screen when the moving screen is in an inclined state.

[0013] As a preferred solution for the above-mentioned sorter, the motion screen drive mechanism includes a motor mounted on a frame, and the frame is provided with two front and rear rotating shaft mounting seats, the rotating shaft is rotatably mounted on the two rotating shaft mounting seats, and the output shaft of the motor and the rotating shaft are fixedly connected by a coupling.

[0014] As a preferred embodiment of the above-mentioned sorter, the silo door includes an arc-shaped silo door plate, which matches the shape of the outlet end of the bottom end of the distribution silo. Suspension plates are respectively provided on the front and rear sides of the silo door plate. The top ends of the front and rear suspension plates are respectively hinged to the front and rear sides of the distribution silo through their own silo door axes. The two silo door axes are coaxially arranged and extend in the front and rear directions. The silo door driving mechanism drives the silo door plate to rotate around the silo door axis to realize the opening or closing of the outlet end of the distribution silo.

[0015] As a preferred embodiment of the above-mentioned sorter, the silo door drive mechanism includes a cylinder, the cylinder body of which is hinged on either side of the storage silo in the left and right directions, and the piston rod of the cylinder extends obliquely downward and is hinged to the silo door plate.

[0016] As a preferred solution of the above-mentioned sorter, the storage bin is a bin body that is larger at the top and smaller at the bottom.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The utility model provides an automatic grain sorter, which realizes the automation of the whole process from material storage, material sorting and feeding, motion screening to the subsequent automatic transportation and collection of the two types of materials after screening by arranging a storage bin, a material dividing mechanism, a motion screening mechanism and a feeding mechanism, thereby greatly improving the efficiency of material screening; at the same time, its motion screening mechanism realizes automatic screening of materials through the left and right swing of the motion screen, and can control the inclination angle and oscillation amplitude of the motion screen through the motion screen driving mechanism to meet the screening needs of grains of different specifications, while improving the quality and efficiency of grain sorting; the utility model can be applicable to a variety of grains, such as soybeans, red beans, mung beans, etc., and can adjust the discharge amount, the inclination angle of the motion screen and the oscillation amplitude according to the actual material type and material batch. It is flexible to use and meets a variety of usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a structural schematic diagram of the motion screen of the present utility model.

[0021] Figure 3 yes Figure 2 Enlarged view of point A.

[0022] Figure 4 It is a cross-sectional view of the cooperation between the inclined motion screen and two material guide pipes of the utility model.

[0023] Figure 5 It is a plan view of the cooperation between the horizontal motion screen and two material guide pipes of the utility model.

[0024] Numbers in the figure: 1 frame, 2 storage bin, 3 distribution bin, 4 bin door plate, 5 suspension plate, 6 bin door shaft, 7 cylinder, 8 connecting frame, 9 connecting head, 10 moving screen, 11 rotating shaft, 12 screen, 13 screen frame, 14 discharge gap, 15 guide ridge, 16 guide channel, 17 screening hole, 18 material blocking door, 19 hinged shaft, 20 arc-shaped material blocking plate, 21 soft connecting strip, 22 motor, 23 rotating shaft mounting seat, 24 material guide pipe, 25 material receiving box. DETAILED DESCRIPTION

[0025] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0026] See also Figures 1 to 5 This embodiment discloses an automatic grain sorter, including a frame 1, on which are provided a storage bin 2, a material sorting mechanism, a motion screening mechanism and a feeding mechanism arranged from top to bottom.

[0027] The storage bin 2 is a large-top, small-bottom bin body, fixed to the frame 1 by bolts. The material distribution mechanism includes a distribution bin 3 and a bin door. The distribution bin 3 is a large-top, small-bottom bin body. The upper end of the distribution bin 3 is the inlet end and is connected to the outlet end of the storage bin 2. The upper end of the distribution bin 3 is fixed to the bottom of the storage bin 2, and the lower end of the distribution bin 3 is the outlet end. The outlet end of the distribution bin 3 can be opened or closed by the bin door.

[0028] The silo door includes an arc-shaped silo door plate 4, which matches the shape of the outlet end of the bottom end of the sub-bin 3. Suspension plates 5 are respectively provided on the front and rear sides of the silo door plate 4. The top ends of the front and rear suspension plates 5 are respectively hinged to the front and rear sides of the sub-bin 3 through their own silo door shafts 6. The two silo door shafts 6 are coaxially arranged and extend in the front-to-back direction. The silo door drive mechanism drives the silo door plate 4 to rotate around the silo door shafts 6 to open or close the outlet end of the sub-bin 3. The silo door drive mechanism includes a cylinder 7, the cylinder body of the cylinder 7 is hinged to either side of the storage bin 2 in the left-right direction, the piston rod of the cylinder 7 extends obliquely downward and is hinged to the silo door plate 4, a connecting frame 8 is provided on one side of the silo door plate 4, and a connector 9 is provided in the middle section of the connecting frame 8. The piston rod of the cylinder 7 is hinged to the connector 9. By retracting the piston rod of the cylinder 7, the door plate 4 is driven to flip upward around the door axis 6, thereby opening the outlet end of the distribution bin 3; by extending the piston rod of the cylinder 7, the door plate 4 is driven to flip downward around the door axis 6 and reset, thereby closing the outlet end of the distribution bin 3.

[0029] The motion screening mechanism includes a motion screen 10. The middle section of the bottom of the motion screen 10 is fixed on a rotating shaft 11 extending forward and backward. The rotating shaft 11 is rotatably mounted on the frame 1. The motion screen 10 includes a screen 12 and a screen frame 13 located around the screen 12. The screen frame 13 and the screen 12 together form a screening cavity with an open top. A gap is left between the left and right ends of the screen 12 and the bottom of the screen frame 13 as a discharge gap 14.

[0030] In the moving screen 10, the screen 12 includes a screen plate, and a plurality of guide ridges 15 are provided on the upper surface of the screen plate. The plurality of guide ridges 15 are arranged at intervals along the front-to-back direction, and each guide ridge 15 extends along the left-to-right direction. The channel between two adjacent guide ridges 15 forms a guide channel 16, and a plurality of through grooves are provided at intervals at the bottom of the guide channel 16 as screening holes 17. The screen frame 13 is provided with a material blocking door 18 on the left and right sides, and the top of the material blocking door 18 is hinged to the screen frame 13 by a hinge shaft 19 extending forward and backward. When the screen 12 of the moving screen 10 is in a horizontal material receiving state, the two material blocking doors 18 are respectively fitted with the left and right sides of the moving screen 10, thereby blocking the two discharge gaps 14 and preventing the material from falling from the discharge gaps 14 on both sides when the moving screen 10 is receiving the material. When the screen 12 of the moving screen 10 is in an inclined material discharging state, the material blocking door 18 is automatically separated from the discharge gap 14 on the lower side of the moving screen 10, and the material in the moving screen 10 can smoothly pass through the discharge gap 14 and fall into the guide pipe 24 below. The material blocking door 18 includes two curved material blocking plates 20 arranged symmetrically on the left and right sides. The tops of the two material blocking plates 20 converge together, and the bottoms of the two material blocking plates 20 are respectively bent outward and extended. The material blocking door 18 blocks the discharge gap 14 by the material blocking plate 20 on the side close to the moving screen 10. Soft connecting strips 21 are respectively provided at the left and right ends of the screen 12. When the moving screen 10 oscillates slightly, they are used to seal the gap between the material blocking door 18 and the screen 12 when the moving screen 10 is tilted, effectively preventing material leakage.

[0031] The motion screen drive mechanism drives the rotating shaft 11 to rotate, thereby causing the motion screen 10 to swing left and right, thereby screening the material in the screening cavity. The motion screen drive mechanism includes a motor 22 mounted on the frame 1. The frame 1 is provided with two front and rear rotating shaft mounting blocks 23. The rotating shaft 11 is rotatably mounted on the two rotating shaft mounting blocks 23. The output shaft of the motor 22 is fixedly connected to the rotating shaft 11 via a coupling, and the rotating shaft 11 is driven by the motor 22 to rotate.

[0032] The feeding mechanism includes left and right oppositely arranged material guide pipes 24, the top inlet ends of the two material guide pipes 24 are respectively connected with the discharge gaps 14 on the left and right sides of the moving screen 10, and the bottom outlet ends of the two material guide pipes 24 are respectively provided with material receiving boxes 25 below, which can be placed on the ground.

[0033] The working process of the automatic grain sorter provided in this embodiment is as follows:

[0034] Initially, the piston rod of cylinder 7 is extended, closing the outlet of sub-bin 3 via the silo door. Simultaneously, the screen 12 of moving screen 10 is in a horizontal position to receive grain. Grain to be sorted is poured into storage silo 2. The grain first rolls into sub-bin 3 and accumulates on door plate 4. Then, cylinder 7 is activated, its piston rod retracts, causing door plate 4 to pivot upward around door axis 6, opening the outlet of sub-bin 3. Grain in sub-bin 3 falls into the screening cavity of moving screen 10. When a certain amount of grain has fallen, the piston rod of cylinder 7 extends, causing door plate 4 to rotate in the opposite direction, closing the outlet of sub-bin 3. Simultaneously, motor 22 is activated, driving moving screen 10 to swing slightly left and right, causing the grain to oscillate within the moving screen 10. During this process, smaller impurities within the grain fall through the screening holes 17 at the bottom of the moving screen 10. Meanwhile, grains with better plumpness sink, while grains with less plumpness float. After completing the small swing screening, the motor 22 first drives the moving screen 10 to tilt to the right at a large angle. Due to gravity, the material blocking gate 18 on the right side of the moving screen 10 separates from the discharge gap 14 on the right side of the moving screen 10. The grains with better plumpness in the lower layer of the moving screen 10 will roll down along the multiple guide channels 16 on the screen 12, pass through the discharge gap 14, fall into the guide pipe 24 below, and finally fall into the receiving box 25 on the right. Then, the motor 22 drives the moving screen 10 to tilt to the left at a large angle and oscillate a certain amplitude. Due to gravity, the material blocking gate 18 on the left side of the moving screen 10 separates from the discharge gap 14 on the left side of the moving screen 10. The grains with lower quality in the moving screen 10 all pass through the discharge gap 14 on the left side of the moving screen 10 along the left guide pipe 24 and finally fall into the receiving box 25 on the left side. At this point, one sorting operation is completed, and the next sorting operation is ready.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic grain sorter, comprising a frame (1), characterized in that: The frame (1) is provided with a material storage bin (2), a material distribution mechanism, a motion screening mechanism and a material feeding mechanism arranged from top to bottom; The material distribution mechanism comprises a distribution bin (3) and a bin door. The distribution bin (3) is a bin body with a larger upper portion and a smaller lower portion. The upper end of the distribution bin (3) is an inlet end and is connected to the outlet at the bottom end of the storage bin (2). The lower end of the distribution bin (3) is an outlet end. The outlet end of the distribution bin (3) is opened or closed by the bin door. The motion screening mechanism comprises a motion screen (10), wherein the middle section of the bottom of the motion screen (10) is fixed on a rotating shaft (11) extending forward and backward, and the rotating shaft (11) is rotatably mounted on the frame (1). The motion screen (10) comprises a screen (12) and a screen frame (13) located around the screen (12), wherein the screen frame (13) and the screen (12) together form a screening cavity with an open top, and a gap is left between the left and right ends of the screen (12) and the bottom of the screen frame (13) as a discharge gap (14). The rotating shaft (11) is driven to rotate by the motion screen driving mechanism, thereby driving the motion screen (10) to swing left and right, thereby achieving screening of the material in the screening cavity; The feeding mechanism comprises left and right material guide pipes (24) arranged opposite to each other, the top inlet ends of the two material guide pipes (24) are respectively connected to the material discharge gaps (14) on the left and right sides of the moving screen (10), and the bottom outlet ends of the two material guide pipes (24) are respectively provided with material receiving boxes (25).

2. The automatic grain sorter according to claim 1, characterized in that: In the moving screen (10), a material blocking door (18) is provided on the left and right sides of the screen frame (13), and the top of the material blocking door (18) is hinged to the screen frame (13) through a hinge shaft (19) extending forward and backward. When the screen (12) of the moving screen (10) is in a horizontal state, the two material blocking doors (18) are respectively fitted with the left and right sides of the moving screen (10), thereby blocking the two discharge gaps (14).

3. The automatic grain sorter according to claim 2, characterized in that: The material blocking door (18) includes two arc-shaped material blocking plates (20) arranged symmetrically on the left and right. The top ends of the two material blocking plates (20) are joined together, and the bottom ends of the two material blocking plates (20) are bent and extended outward respectively. The material blocking door (18) blocks the discharge gap (14) through the material blocking plate (20) on the side close to the moving screen (10).

4. The automatic grain sorter according to claim 1, characterized in that: In the moving screen (10), the screen (12) includes a screen plate, the upper surface of the screen plate is provided with a plurality of guide ridges (15), the plurality of guide ridges (15) are arranged at intervals along the front-back direction, each guide ridge (15) extends along the left-right direction, the channel between two adjacent guide ridges (15) forms a guide channel (16), and the bottom of the guide channel (16) is provided with a plurality of through grooves at intervals as screening holes (17).

5. The automatic grain sorter according to claim 2, characterized in that: Soft connecting strips (21) are respectively provided at the left and right ends of the screen (12) for sealing the gap between the material blocking door (18) and the screen (12) when the moving screen (10) is in an inclined state.

6. The automatic grain sorter according to claim 1, characterized in that: The motion screen driving mechanism comprises a motor (22) mounted on a frame (1); the frame (1) is provided with two front and rear rotating shaft mounting seats (23); the rotating shaft (11) is rotatably mounted on the two rotating shaft mounting seats (23); and the output shaft of the motor (22) and the rotating shaft (11) are fixedly connected via a coupling.

7. The automatic grain sorter according to claim 1, characterized in that: The silo door comprises an arc-shaped silo door plate (4), which matches the shape of the outlet end of the bottom end of the distribution silo (3). Suspension plates (5) are respectively provided on the front and rear sides of the silo door plate (4). The top ends of the front and rear suspension plates (5) are respectively hinged to the front and rear sides of the distribution silo (3) through their own silo door shafts (6). The two silo door shafts (6) are coaxially arranged and extend in the front-to-back direction. The silo door driving mechanism drives the silo door plate (4) to rotate around the silo door shaft (6), thereby realizing the opening or closing of the outlet end of the distribution silo (3).

8. The automatic grain sorter according to claim 7, characterized in that: The silo door driving mechanism comprises a cylinder (7), the cylinder body of the cylinder (7) being hinged on either side of the storage silo (2) in the left and right directions, and the piston rod of the cylinder (7) extending obliquely downward and being hinged to the silo door plate (4).

9. The automatic grain sorter according to claim 1, characterized in that: The storage bin (2) is a bin body that is larger at the top and smaller at the bottom.

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