Seed selection device for field wheat planting

Abstract

The utility model relates to the technical field of wheat seed selection, and discloses a field wheat planting seed selection device which comprises a supporting frame, a seed storage box fixedly installed at the upper end of the supporting frame, a winnowing mechanism and a collecting box, the winnowing mechanism and the collecting box are arranged on the supporting frame, a feeding port is formed in the upper end of the seed storage box, a discharging port is formed in the lower end of the seed storage box, and the winnowing mechanism comprises a flow collecting cover and a fan. The flow collecting cover is located below the seed storage box, an air outlet and an air inlet are formed in the flow collecting cover, the size of the air outlet of the flow collecting cover is smaller than that of the air inlet, the fan is fixedly installed in the flow collecting cover and located at the air inlet, two fixing rods are fixedly installed on the supporting frame, and a pull handle is fixedly installed at the upper end of the flow collecting cover. And two fixing columns are fixedly mounted at the lower end of the flow collecting cover. The utility model relates to a winnowing device for wheat seeds, and aims to solve the problem that impurities cannot be completely screened out due to the fact that the wind power at the winnowing part cannot be adjusted when the wheat seeds with different drying degrees are winnowed by the conventional seed selection device.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheat seed selection, and particularly relates to a seed selection device for field wheat planting. Background Technique

[0002] Breeding and seed selection are important processes for controlling the quality and morphology of wheat seeds. Breeding is a technology that can improve the genetic characteristics of crops and cultivate high-yield and high-quality varieties. Wheat seed selection requires screening out shriveled, damaged, and dust impurities in the seeds through relevant screening equipment, and batch-processing seeds of different sizes to ensure the quality of the cultivated wheat seeds.

[0003] Chinese Patent CN 219210673 U discloses a seed selection device with uniform feeding, including a winnowing machine housing and a blower. The upper surface of the winnowing machine housing is communicated with a feeding pipe, and the inner wall of the feeding pipe is rotatably connected with a rotating rod. The outer wall of the rotating rod is provided with grooves, and one end of the rotating rod is fixedly connected with a rotating shaft. One end of the rotating shaft penetrates through the feeding pipe and extends to the outside of the feeding pipe. One end of the rotating shaft located outside the feeding pipe is fixedly connected with a driving mechanism. In the utility model, by setting the feeding pipe, the rotating rod, the grooves and the rotating shaft to be used in cooperation, the seeds can enter the winnowing machine housing evenly, and the seeds entering the winnowing machine housing will not gather together without the guidance of the receiving groove, making it easier for the blower to blow out the impurities in the seeds, thereby improving the winnowing performance of the device. However, when winnowing wheat seeds with different drying degrees by this seed selection device, the wind force at the winnowing part cannot be adjusted, resulting in the problem that the impurities cannot be completely screened out. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that when the current seed selection device winnows wheat seeds with different drying degrees, the wind force at the winnowing part cannot be adjusted, resulting in the problem that the impurities cannot be completely screened out.

[0005] To achieve the above technical purpose, the technical scheme adopted by the utility model is as follows:

[0006] A field wheat planting and seed selection device comprises a support frame, a seed storage box fixedly mounted on the upper end of the support frame, an air selection mechanism and a collecting box arranged on the support frame, the seed storage box is provided with an inlet at the upper end and an outlet at the lower end, the air selection mechanism comprises a collector and a fan, the collector is located below the seed storage box, an air outlet and an air inlet are provided on the collector, the size of the air outlet of the collector is smaller than that of the air inlet, the fan is fixedly mounted in the collector, and the fan is located at the air inlet, two fixing rods are fixedly mounted on the support frame, a pull handle is fixedly mounted on the upper end of the collector, two fixing columns are fixedly mounted on the lower end of the collector, through holes are provided on the two fixing columns, two fixing rods penetrate the through holes of the two fixing columns, and the collecting box is movably mounted below the seed storage box.

[0007] It is further defined that a fixed cover is fixedly installed at the lower end of the seed storage box, the lower port of the fixed cover is smaller than the upper port of the fixed cover, a fixed seat is fixedly installed on the fixed cover, a motor is fixedly installed on the fixed seat, a rotating shaft is rotatably installed inside the fixed cover, the end of the rotating shaft passes through the fixed cover and is fixedly connected to the output shaft of the motor, a stirring column with a fan-shaped cross section is fixedly installed on the rotating shaft, and when the stirring column rotates, the outer wall of the stirring column is close to the inner wall of the fixed cover. With such a structural design, when the motor is working, the output shaft drives the stirring column to rotate, which can stir the wheat seeds in the seed storage box to prevent the seeds in the seed storage box from being blocked.

[0008] It is further defined that a movable plate is installed under the fixed cover, a limiting rod is fixedly installed on the movable plate, a limiting end is provided at the end of the limiting rod, a limiting cylinder is fixedly installed on the fixed cover, the limiting rod passes through the limiting cylinder, a compression spring is sleeved between the limiting end and the limiting cylinder on the limiting rod, and a wavy first opening and a strip-shaped second opening are provided on the movable plate. With such a structural design, when the wheat seeds fall downward through the wavy first opening, the contact area between the flowing air and the falling seeds can be increased, thereby blowing away the impurities mixed in the seeds, and when the second opening is pushed to the lower end of the fixed cover, the seeds on the movable plate can be completely removed and fall downward.

[0009] It is further defined that a toggle plate is fixedly mounted on the output shaft of the motor, a fixing bar is fixedly mounted on the movable plate, and a contact column adapted to the toggle plate is provided at the end of the fixing bar. With such a structural design, the toggle plate can toggle the movable plate through the contact column and the fixing bar, so that the first opening and the second opening periodically move to below the fixed cover.

[0010] It is further defined that a limit stop bar is fixedly installed at the lower part of the support frame. Such a structural design facilitates locking the position of the collection box through the limit stop bar.

[0011] It is further defined that a plurality of universal wheels are provided at the lower end of the collection box, and a handle is fixedly installed on the collection box. Such a structural design is simple in structure and convenient to use.

[0012] The utility model adopting the above technical solution has the following advantages:

[0013] In the utility model, when the fan is working, the collecting cover can concentrate the wind force to the discharge port, and the collecting cover can be pulled on the fixed rod by a handle to facilitate the adjustment of the distance between the air outlet and the discharge port, thereby generating different wind forces to select wheat seeds of different dryness degrees and screen out impurities mixed in the wheat seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of the structure of a field wheat planting and seed selection device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a fixed cover in a field wheat planting and seed selection device of the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the stirring column and the movable plate in a field wheat planting and seed selection device of the utility model;

[0019] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 6 This is a schematic cross-sectional view of the fixed cover part of a field wheat planting and seed selection device of the utility model;

[0021] Figure 7 The utility model is a schematic diagram of the structure of the wind selection mechanism part of a field wheat planting and seed selection device.

[0022] The main component symbols are described as follows:

[0023] 1. Support frame; 11. Limit stop bar;

[0024] 2. Seed storage box;

[0025] 21. fixed cover; 211. fixed seat;

[0026] 212, motor; 2121, dial; 2122, fixing bar; 2123, contact column;

[0027] 22. Rotating shaft; 23. Stirring column;

[0028] 24. Movable plate; 241. Limit rod; 242. Compression spring; 243. First opening; 244. Second opening;

[0029] 3. Air separation mechanism;

[0030] 31. Converging hood; 311. Pull handle; 312. Fixed column;

[0031] 32. Fan; 33. Fixed rod;

[0032] 4. Collection box; 41. Universal wheels; 42. Handle. Detailed implementation manner

[0033] The present utility model will be described in detail below in combination with the accompanying drawings and specific embodiments. It should be noted that in the description of the drawings or the specification, similar or identical parts are all denoted by the same reference numerals, and the implementation manners not illustrated or described in the drawings are forms known to those of ordinary skill in the art. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc., are only references to the directions of the drawings and are not used to limit the protection scope of the present utility model.

[0034] As Figures 1 to 7 shown, a wheat seed selection device for large - field planting of the present utility model includes a support frame 1, a seed storage box 2 fixedly installed at the upper end of the support frame 1, an air separation mechanism 3 arranged on the support frame 1, and a collection box 4. The upper end of the seed storage box 2 is provided with a feeding port, and the lower end is provided with a discharging port. The air separation mechanism 3 includes a converging hood 31 and a fan 32. The converging hood 31 is located below the seed storage box 2. The converging hood 31 is provided with an air outlet and an air inlet, and the size of the air outlet of the converging hood 31 is smaller than that of the air inlet. The fan 32 is fixedly installed in the converging hood 31 and is located at the air inlet. Two fixed rods 33 are fixedly installed on the support frame 1, a limit stop strip 11 is fixedly installed at the lower part of the support frame 1, a pull handle 311 is fixedly installed at the upper end of the converging hood 31, two fixed columns 312 are fixedly installed at the lower end of the converging hood 31, through holes are provided on both of the two fixed columns 312, and the two fixed rods 33 penetrate through the through holes of the two fixed columns 312. The collection box 4 is movably installed below the seed storage box 2. A plurality of universal wheels 41 are provided at the lower end of the collection box 4, and a handle 42 is fixedly installed on the collection box 4. The collection box 4 can be conveniently moved through the handle 42 and the universal wheels 41 to collect the screened wheat seeds.

[0035] A fixing cover 21 is fixedly installed at the lower end of the seed storage box 2. The lower port of the fixing cover 21 is smaller than the upper port of the fixing cover 21. A fixing seat 211 is fixedly installed on the fixing cover 21, and a motor 212 is fixedly installed on the fixing seat 211. A rotating shaft 22 is rotatably installed inside the fixing cover 21. The end of the rotating shaft 22 penetrates through the fixing cover 21 and is fixedly connected to the output shaft of the motor 212. A stirring column 23 with a sector-shaped cross-section is fixedly installed on the rotating shaft 22. When the stirring column 23 rotates, the outer wall of the stirring column 23 is close to the inner wall of the fixing cover 21.

[0036] A movable plate 24 is movably installed at the lower part of the fixing cover 21. A limiting rod 241 is fixedly installed on the movable plate 24. A limiting end is provided at the end of the limiting rod 241. A limiting cylinder is fixedly installed on the fixing cover 21. The limiting rod 241 penetrates through the limiting cylinder. A compression spring 242 is sleeved on the limiting rod 241 between the limiting end and the limiting cylinder. A wavy first opening 243 and a strip-shaped second opening 244 are formed on the movable plate 24.

[0037] A dial 2121 is fixedly installed on the output shaft of the motor 212. A fixing strip 2122 is fixedly installed on the movable plate 24. A contact column 2123 adapted to the dial 2121 is provided at the end of the fixing strip 2122.

[0038] The usage method of the present utility model is as follows:

[0039] During use, the wheat seeds to be screened are poured into the seed storage box 2. The motor 212 works, and the output shaft drives the rotating shaft 22 and the stirring column 23 to rotate, so as to stir the wheat seeds in the seed storage box 2 and make them fall downward. When the outer wall of the stirring column 23 is close to the inner walls on both sides of the fixing cover 21, the wheat seeds above can be separated from the wheat seeds below, so as to intermittently convey the wheat seeds to the fixing cover 21, and the problem of wheat seed accumulation in the fixing cover 21 can be prevented;

[0040] When the wheat seeds pass through the first opening 243, the wheat seeds falling downward will form a wavy surface, which can increase the contact area with the air flow, thereby improving the seed selection rate;

[0041] When the output shaft of the motor 212 rotates, the dial 2121 will stir the contact column 2123 and the fixing strip 2122, and can drive the movable plate 24 to reciprocate below the fixing cover 21, so that the first opening 243 and the second opening 244 periodically move to the lower part of the fixing cover 21, thereby completely separating the wheat seeds from the movable plate 24;

[0042] When the wheat seeds fall downward, the fan 32 works, and the air flow collector 31 concentrates the air flow downward to the fixing cover 21, and the impurities in the wheat seeds can be blown away, so that the qualified wheat seeds fall into the lower seed storage box 2.

[0043] The above has introduced in detail a seed selection device for field wheat planting provided by the present utility model. The description of the specific embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A field wheat planting and seed selection device, comprising a support frame (1), a seed storage box (2) fixedly mounted on the upper end of the support frame (1), a wind selection mechanism (3) and a collection box (4) arranged on the support frame (1), wherein the seed storage box (2) is provided with a feed inlet at the upper end and a discharge outlet at the lower end, and is characterized in that: The air selection mechanism (3) comprises a collecting cover (31) and a fan (32). The collecting cover (31) is located below the seed storage box (2). An air outlet and an air inlet are provided on the collecting cover (31). The size of the air outlet of the collecting cover (31) is smaller than the size of the air inlet. The fan (32) is fixedly installed in the collecting cover (31), and the fan (32) is located at the air inlet. Two fixing rods (33) are fixedly installed on the support frame (1). A handle (311) is fixedly installed on the upper end of the collecting cover (31). Two fixing columns (312) are fixedly installed on the lower end of the collecting cover (31). Both of the two fixing columns (312) are provided with through holes. The two fixing rods (33) penetrate the through holes of the two fixing columns (312). The collection box (4) is movably installed below the seed storage box (2).

2. The field wheat planting and seed selection device according to claim 1, characterized in that: A fixed cover (21) is fixedly mounted on the lower end of the seed storage box (2), the lower port of the fixed cover (21) is smaller than the upper port of the fixed cover (21), a fixed seat (211) is fixedly mounted on the fixed cover (21), a motor (212) is fixedly mounted on the fixed seat (211), a rotating shaft (22) is rotatably mounted inside the fixed cover (21), an end of the rotating shaft (22) passes through the fixed cover (21) and is fixedly connected to an output shaft of the motor (212), a stirring column (23) with a fan-shaped cross section is fixedly mounted on the rotating shaft (22), and when the stirring column (23) rotates, the outer wall of the stirring column (23) is close to the inner wall of the fixed cover (21).

3. The field wheat planting and seed selection device according to claim 2, characterized in that: The fixed cover (21) is movably mounted with a movable plate (24), the movable plate (24) is fixedly mounted with a limiting rod (241), the end of the limiting rod (241) is provided with a limiting end, the fixed cover (21) is fixedly mounted with a limiting cylinder, the limiting rod (241) passes through the limiting cylinder, a compression spring (242) is sleeved between the limiting end and the limiting cylinder on the limiting rod (241), and the movable plate (24) is provided with a wavy first opening (243) and a strip-shaped second opening (244).

4. The field wheat planting and seed selection device according to claim 3 is characterized in that: A toggle disk (2121) is fixedly mounted on the output shaft of the motor (212), a fixing bar (2122) is fixedly mounted on the movable plate (24), and a contact column (2123) adapted to the toggle disk (2121) is provided at the end of the fixing bar (2122).

5. The field wheat planting and seed selection device according to claim 1, characterized in that: A limit stop bar (11) is fixedly mounted on the lower part of the support frame (1).

6. The field wheat planting and seed selection device according to claim 1, characterized in that: A plurality of universal wheels (41) are provided at the lower end of the collection box (4), and a handle (42) is fixedly mounted on the collection box (4).

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