Wheat seed selecting mechanism

Abstract

The utility model provides a wheat seed selecting mechanism, which relates to the technical field of wheat seed screening and comprises a screening box and a plurality of screening plates, the screening plates are distributed and fixedly connected with one another, a socket is fixedly connected to the bottom of the screening box, and a lifting column which longitudinally ascends and descends in a reciprocating manner is inserted into the socket. The top end of the lifting column is rotationally connected with a gear ring seat with a gear ring arranged on the inner wall, the door plate is movably opened through contraction of the electric telescopic rod, then wheat on the screening plate slides out along an inclined point of the screening plate, in addition, the door plate is controlled to be closed through the electric telescopic rod, and it can be guaranteed that the wheat cannot be spilled out in the screening process; therefore, enough screening time of the wheat is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wheat seed screening, in particular to a wheat seed selection mechanism. Background Technique

[0002] The wheat seeds are semi-winter type, medium early maturing, and the maturity period is 1-2 days earlier than the control Yumai 49 and Xinmai 8. The seedlings are upright, with wide and spreading leaves, dark green leaf color, medium tillering ability, early springing and jointing, rapid growth, and fast polarization between the two poles. Moreover, in order to ensure the wheat yield, it is necessary to select wheat seeds before packaging or sowing.

[0003] Therefore, a grain throwing device of a wheat seed selection equipment in the prior art, with the publication number: CN216582455U, pours wheat seeds from the upper part of the selection box. When the small motor is started, the rotating shaft and the baffle on its outer wall rotate clockwise. When the baffle rotates to the upper part, it will push the flat plate to slide up in the chute, and also drive the sealing plate to rise and pull the first spring telescopic rod to stretch. When the baffle rotates to the lower part, it will not push the flat plate. At this time, the first spring telescopic rod will reset and pull the sealing plate and the flat plate to slide down and reset. Since the flat plate is fixedly connected to the screening frame, the two screening frames are driven to slide up and down repeatedly in the selection box, which can effectively screen out the smaller particles in the wheat seeds and improve the screening effect.

[0004] However, the inclination angle of the screening frame in the prior art is fixed, that is, it always maintains a fixed inclination state. Therefore, when the wheat seeds vibrate up and down with the screening frame, they will accumulate at the lower part of the surface of the screening frame, resulting in excessive accumulation of wheat at this point, which may affect the screening speed and sliding out and falling of the wheat. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and a wheat seed selection mechanism is proposed.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a wheat seed selection mechanism, including a screening box and a plurality of sieve plates. Each part between the plurality of sieve plates is fixedly connected to each other. A socket is fixedly connected to the bottom of the screening box. A lifting column that moves longitudinally and reciprocally is inserted into the socket. The top of the lifting column is rotatably connected to a toothed ring seat with a toothed ring arranged on its inner wall. The center of the top edge of the outer wall of the toothed ring seat is movably connected to the bottom sieve plate through a universal joint. And a plurality of spring rods that are movably connected to the toothed ring seat and the sieve plate through universal joints are annularly arranged around the top edge of the outer wall of the toothed ring seat. The telescopic end of the spring rod is fixedly connected with a contact member. And a guiding block for guiding the contact member to lift along a V-shaped route is fixedly connected to one side of the bottom of the screening box.

[0007] Preferably, one end of the lifting column is fixedly connected with a slide rail, and a turntable for driving the slide rail to lift along the surface of the socket is rotatably connected to the bottom of the screening box. One end center of the turntable is fixedly connected with a bevel gear column, and a plurality of bevel gear columns rotate simultaneously.

[0008] Preferably, a rotating cover with tooth rings arranged on both the inner and outer walls is rotatably connected to the bottom of the screening box, and the tooth ring on the inner wall of the rotating cover is meshed with a plurality of bevel gear columns.

[0009] Preferably, a motor is fixedly connected to the bottom of the screening box, and a driving gear set composed of two superimposed driving gears is fixedly connected to the main shaft of the motor. One of the driving gears of the driving gear set is meshed with the tooth ring on the outer wall of the rotating cover, and the other driving gear is meshed with the tooth ring on the inner wall of the tooth ring seat.

[0010] Preferably, a rubber ring is fixedly connected to the side of the sieve plate, and a connecting ring rotatably connected to the inner wall of the screening box is fixedly connected to the outside of the rubber ring.

[0011] Preferably, a door plate corresponding to the positions and quantities of a plurality of sieve plates one by one is inserted and connected in an embedded manner on one side of the outer wall of the screening box close to the guiding block.

[0012] Preferably, a plurality of the door plates are rigidly connected, and an electric telescopic rod for driving the door plate to move is fixedly connected to the outer wall of the screening box.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0014] 1. In the present utility model, by arranging the socket, the lifting column, the tooth ring seat, the contact member and the guiding block, the lifting column reciprocates up and down in the socket to drive the tooth ring seat to drive the sieve plate to reciprocate up and down, and when the tooth ring seat rotates relative to the lifting column, the sieve plate rotates with the assistance of the spring rod. By using the contact between the guiding block and the contact member, the sieve plate can swing during the rotation process, which can prevent wheat from accumulating on one side of the sieve plate.

[0015] 2. In the present utility model, the electric telescopic rod contracts to drive the door plate to move and open, so that the wheat on the sieve plate slides out along the inclined point of the sieve plate. In addition, by controlling the door plate to close through the electric telescopic rod, it can be ensured that the wheat during the screening process will not spill out, that is, it can ensure that the wheat has sufficient screening time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a wheat seed selection mechanism proposed by the present utility model;

[0017] Figure 2 is a wheat seed selection mechanism proposed by the present utility model Figure 1 of the cross-sectional structural schematic diagram;

[0018] Figure 3 The present utility model provides a wheat seed selection mechanism Figure 2 Side sectional structure schematic diagram;

[0019] Figure 4 is Figure 2 Enlarged view of part A in

[0020] Legend: 1, screening box; 2, door panel; 3, electric telescopic rod; 4, slide rail; 5, sieve plate; 6, rubber ring; 7, connecting ring; 8, tooth ring seat; 9, spring rod; 10, rotating cover; 11, contact part; 12, bevel gear column; 13, guiding block; 14, lifting column; 15, motor; 16, driving gear set; 17, socket; 18, turntable. Specific implementation manner

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0023] As Figures 1-4 shown, a wheat seed selection mechanism includes a screening box 1 and a plurality of sieve plates 5. The plurality of sieve plates 5 are distributed longitudinally and linearly and are fixedly connected to each other. A socket 17 is fixedly connected to the bottom of the screening box 1. A lifting column 14 that reciprocates longitudinally is inserted into the socket 17. The top of the lifting column 14 is rotatably connected to a tooth ring seat 8 with a tooth ring provided on the inner wall. The center of the top edge of the outer wall of the tooth ring seat 8 is movably connected to the bottom sieve plate 5 through a universal joint. And around the top edge of the outer wall of the tooth ring seat 8, a plurality of spring rods 9 that are movably connected to the tooth ring seat 8 and the sieve plate 5 through universal joints are annularly and evenly distributed. The telescopic end of the spring rod 9 is fixedly connected to a contact part 11. And a guiding block 13 for guiding the contact part 11 to lift and lower along a V-shaped path is fixedly connected to one side of the bottom of the screening box 1.

[0024] In this solution:

[0025] The plurality of sieve plates 5 are longitudinally linearly distributed, and the sieve hole diameters of the sieve plates 5 from top to bottom are different. During use, the lifting column 14 reciprocates up and down in the socket 17, so that the tooth ring seat 8 rotatably connected to the lifting column 14 also reciprocates up and down. And because the tooth ring seat 8 is connected to the sieve plate 5 through a universal joint, through the reciprocating up and down of the lifting column 14, the plurality of sieve plates 5 can also reciprocate up and down;

[0026] In addition, a number of spring rods 9 are also provided between the sieve plate 5 and the tooth ring seat 8 to ensure that when the tooth ring seat 8 rotates relative to the lifting column 14, it can drive a number of sieve plates 5 to rotate:

[0027] Furthermore: After the spring rod 9 on the tooth ring seat 8 rotates to the position of the guiding block 13, the contact member 11 on the telescopic end of the spring rod 9 slides on the guiding block 13 and drives the telescopic end of the spring rod 9 to contract. Since the spring rod 9 is movably connected to the tooth ring seat 8 and the sieve plate 5 through universal joints, when the spring rod 9 is compressed, it will drive the sieve plate 5 to tilt, that is, while the sieve plate 5 is lifting up and down and rotating, its surface swings in a wavy shape, which can effectively evenly distribute the screened wheat on the surface of the sieve plate 5.

[0028] As Figure 3 and Figure 4 shown: One end of the lifting column 14 is fixedly connected with a slide rail 4, and a turntable 18 for driving the slide rail 4 to lift along the surface of the socket 17 is rotatably connected to the bottom of the screening box 1. One end center of the turntable 18 is fixedly connected with a bevel gear column 12, and a number of bevel gear columns 12 rotate simultaneously.

[0029] A rotating cover 10 with tooth rings provided on both the inner and outer walls is rotatably connected to the bottom of the screening box 1, and the tooth ring on the inner wall of the rotating cover 10 is meshed and connected with a number of bevel gear columns 12.

[0030] A motor 15 is fixedly connected to the bottom of the screening box 1. The main shaft of the motor 15 is fixedly connected with a driving gear group 16 composed of two driving gears stacked. One of the driving gears of the driving gear group 16 is meshed and connected with the tooth ring on the outer wall of the rotating cover 10, and the other driving gear is meshed and connected with the tooth ring on the inner wall of the tooth ring seat 8.

[0031] In this solution:

[0032] The motor 15 drives the driving gear group 16 to rotate. One of the driving gears of the driving gear group 16 drives the tooth ring on the outer wall of the rotating cover 10, thereby realizing the rotation of the rotating cover 10. The tooth ring in the rotating cover 10 will drive a number of bevel gear columns 12, thereby realizing the rotation of the turntable 18. Specifically, a convex block inserted into the slide rail 4 is provided on one side of the turntable 18. Therefore, when the turntable 18 rotates, the convex block on its surface moves in the slide rail 4 and forces the slide rail 4 to drive the lifting column 14 to reciprocate up and down in the socket 17;

[0033] In addition, the other driving gear of the driving gear group 16 will drive the tooth ring seat 8, and under the connection action of a number of spring rods 9, the sieve plate 5 is rotated.

[0034] As Figure 2 shown: A rubber ring 6 is fixedly connected to the side of the sieve plate 5, and a connecting ring 7 that is rotatably connected to the inner wall of the screening box 1 is fixedly connected to the outside of the rubber ring 6.

[0035] In this solution:

[0036] The elastic force of the rubber ring 6 ensures that it will be stretched during the tilting process of the sieve plate 5. Therefore, when the contact member 11 at the tilting end of the sieve plate 5 disengages from the guiding block 13, the deformed rubber ring 6 resets, realizing the reset of the tilting point of the sieve plate 5.

[0037] As Figure 1 shown: On one side of the outer wall of the screening box 1 close to the guiding block 13, there are inserted door panels 2 corresponding to the positions and quantities of several sieve plates 5 one by one.

[0038] Several door panels 2 are rigidly connected, and an electric telescopic rod 3 for driving the movement of the door panels 2 is fixedly connected to the outer wall of the screening box 1.

[0039] In this solution:

[0040] By contracting the electric telescopic rod 3, the movement of the door panel 2 is realized to open, and then the wheat on the sieve plate 5 slides out along the tilting point of the sieve plate 5.

[0041] Working principle;

[0042] During use, wheat is poured onto the top sieve plate 5 along the box opening at the top of the screening box 1. Then, the motor 15 drives the driving gear set 16 to rotate. One of the driving gears of the driving gear set 16 drives the toothed ring on the outer wall of the rotating cover 10, thereby realizing the rotation of the rotating cover 10. The toothed ring in the rotating cover 10 drives several bevel gear columns 12, thereby realizing the rotation of the turntable 18. Specifically, there is a convex block inserted into the slide rail 4 on one side of the turntable 18. Therefore, when the turntable 18 rotates, the convex block on its surface moves within the slide rail 4 and forces the slide rail 4 to drive the lifting column 14 to reciprocate up and down within the socket 17, thereby realizing the reciprocating lifting of the toothed ring seat 8 and the sieve plate 5 connected to the toothed ring seat 8 through a universal joint. In addition, another driving gear of the driving gear set 16 drives the toothed ring seat 8, and under the connection action of several spring rods 9, the sieve plate 5 rotates. When the contact member 11 of one of the spring rods 9 on the toothed ring seat 8 contacts the guiding block 13, the contact member 11 slides on the guiding block 13 and drives the corresponding side of the sieve plate 5 to swing in a V-shaped path.

[0043] The wiring diagram of the electric telescopic rod 3 and the motor 15 in this utility model belongs to the common knowledge in the art. Its working principle is already known technology, and its model is selected according to actual use. Therefore, the control method and wiring layout of the electric telescopic rod 3 and the motor 15 will not be explained in detail.

[0044] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A wheat seed selection mechanism, comprising a screening box (1) and a number of sieve plates (5), characterized in that: Several of the sieve plates (5) are distributed among each other and fixedly connected to each other. A socket (17) is fixedly connected to the bottom of the screening box (1). A lifting column (14) that reciprocates vertically is inserted into the socket (17). The top end of the lifting column (14) is rotatably connected to a toothed ring seat (8) with a toothed ring provided on its inner wall. Between the center of the top edge of the outer wall of the toothed ring seat (8) and the bottom sieve plate (5), they are movably connected through a universal joint. And around the top edge of the outer wall of the toothed ring seat (8), spring rods (9) that are movably connected to the toothed ring seat (8) and the sieve plate (5) through universal joints are annularly and arrayedly distributed. The telescopic end of the spring rod (9) is fixedly connected to a contact member (11). And on one side of the bottom of the screening box (1), a guiding block (13) for guiding the contact member (11) to lift along a V-shaped path is fixedly connected.

2. The wheat seed selection mechanism according to claim 1, wherein: One end of the lifting column (14) is fixedly connected to a slide rail (4). And a turntable (18) for driving the slide rail (4) to lift along the surface of the socket (17) is rotatably connected to the bottom of the screening box (1). One end center of the turntable (18) is fixedly connected to a bevel gear column (12). And several bevel gear columns (12) rotate simultaneously.

3. The wheat seed selection mechanism according to claim 2, characterized in that: A rotating cover (10) with toothed rings provided on both its inner and outer walls is rotatably connected to the bottom of the screening box (1). And the toothed ring on the inner wall of the rotating cover (10) is meshed and connected to several bevel gear columns (12).

4. The wheat seed selection mechanism according to claim 2, characterized in that: A motor (15) is fixedly connected to the bottom of the screening box (1). A driving gear set (16) composed of two superimposed driving gears is fixedly connected to the main shaft of the motor (15). One of the driving gears of the driving gear set (16) is meshed and connected to the toothed ring on the outer wall of the rotating cover (10), and the other driving gear is meshed and connected to the toothed ring on the inner wall of the toothed ring seat (8).

5. The wheat seed selection mechanism according to claim 1, characterized in that: A rubber ring (6) is fixedly connected to the side of the sieve plate (5). A connecting ring (7) that is rotatably connected to the inner wall of the screening box (1) is fixedly connected to the outside of the rubber ring (6).

6. The wheat seed selection mechanism according to claim 1, characterized in that: On one side of the outer wall of the screening box (1) close to the guiding block (13), door panels (2) corresponding to the positions and quantities of several sieve plates (5) are inserted and embedded.

7. The wheat seed selection mechanism according to claim 6, characterized in that: Several of the door panels (2) are rigidly connected. And an electric telescopic rod (3) for driving the door panels (2) to move is fixedly connected to the outer wall of the screening box (1).

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