Screening device for wheat breeding

Abstract

The utility model discloses a screening device for wheat breeding, which belongs to the technical field of wheat breeding screening and comprises a first screening plate, a second screening plate and a third screening plate. The second screening plate is used for performing second-stage screening on the wheat; the breeding cavity is arranged on one side of the second screening plate and is used for bearing liquid for soaking wheat; the first flow dividing groove is formed in the side edge of the breeding cavity in parallel. Through the design of the two stages of screening plates, primary and secondary screening of wheat is achieved, impurities and unqualified wheat are effectively removed, the screening efficiency is improved, the wheat can be naturally separated according to the mass (density) through liquid filled in the breeding cavity, full seeds sink to the water bottom, and the seed selection efficiency is improved. And the seeds with poor quality (possibly hollow, not full or less endosperm) float on the liquid level, so that the design can accurately evaluate the quality of the wheat and automatically realize the separation of the high-quality wheat and the low-quality wheat.

Description

Technical Field

[0001] This utility model relates to the field of wheat breeding screening technology, specifically to a screening device for wheat breeding. Background Technology

[0002] During the crucial wheat sowing stage, farmers employ a series of meticulous and thorough preparatory measures to ensure the healthy growth of the crop and ultimately a bountiful harvest. The first step is seed selection; plump grains are prioritized as the foundation for breeding. This selection not only helps improve seed germination rates but also, to a certain extent, ensures the genetic quality of offspring, laying a solid foundation for high yield and quality.

[0003] In current agricultural technology, most screening equipment used in wheat breeding and selection processes relies on a hierarchical screening mechanism, which involves setting up screening plates with different aperture sizes at each stage to achieve multi-level fine screening of wheat seeds. While this traditional screening method can meet basic screening needs to a certain extent, its inherent limitations are becoming increasingly apparent. With the increase in screening levels, not only do screening costs rise significantly, but equipment maintenance and upgrades also place a considerable economic burden on farmers.

[0004] Specifically, adding each level of screening plates means investing more in material costs, processing costs, and subsequent maintenance costs. Furthermore, because the aperture sizes of the screening plates vary across different levels, the precision requirements for the equipment and the processing technology also increase accordingly, which undoubtedly increases the complexity and cost of equipment manufacturing.

[0005] More importantly, existing screening equipment mostly uses oscillating screens, which separate seeds through the reciprocating oscillation of the screen. However, this screening method has significant shortcomings when processing wheat seeds. On the one hand, while oscillating screens can remove some impurities, they often cannot effectively distinguish between shriveled and plump seeds, resulting in a significant reduction in seed selection efficiency. On the other hand, because the screen needs to withstand the friction and impact of the seeds for a long time, its wear and tear is quite severe, which not only affects the screening effect but also shortens the service life of the equipment.

[0006] Based on this, the present invention designs a screening device for wheat breeding to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a screening device for wheat breeding.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A screening device for wheat breeding includes: a first screening plate for first-stage screening of wheat; a second screening plate for second-stage screening of wheat; a selection chamber disposed on one side of the second screening plate for holding liquid for soaking wheat; a first diversion channel disposed parallel to the side of the selection chamber; a second diversion channel disposed parallel to the side of the selection chamber for overflow of substandard wheat after soaking; and a propulsion assembly including a drive shaft rotatably disposed at the upper end of the selection chamber.

[0010] The propulsion assembly also includes a support shaft, which is perpendicular to the drive shaft and fixedly connected by a first connecting block. A locking block is installed on the support shaft, and a connecting plate is connected to one side of the locking block. A propulsion plate is detachably installed on one side of the connecting plate for collecting the overflow of substandard wheat after soaking through the first and second diversion channels.

[0011] Preferably, the system further includes a screening box, the top of which is provided with a vibration motor and a feed inlet. The first screening plate and the second screening plate are installed vertically and parallel inside the screening box. The first screening plate and the second screening plate are respectively arranged in a progressively inclined manner inside the screening box. A screening port adapted to the first screening plate and the second screening plate is opened on one side of the screening box.

[0012] Preferably, the propulsion assembly further includes a drive motor and a second connecting block, the output end of the drive motor is fixedly installed on one side of the first connecting block, and the first connecting block and the second connecting block are connected by a drive shaft and a support shaft.

[0013] Preferably, the inner side of the locking block is provided with a slot that matches the support shaft, the support shaft passes through the slot, and a bolt is rotatably fixed on one side of the locking block. One end of the bolt passes through the inner slot of the locking block and abuts against the surface of the support shaft.

[0014] Preferably, the two sides of the connecting plate are arc-shaped and are respectively installed on one side of the pusher plate by detachable clips. The pusher plate has a slot on one side that is compatible with the detachable clips.

[0015] Preferably, the number of the locking block, connecting plate, and pusher plate is at least two sets, and at least two sets of pusher plates are fixed together by a screw and washer structure.

[0016] Preferably, the first diversion channel is located on one side of the screening box and is parallel to the top of the selection chamber.

[0017] Preferably, a valve is installed at the center of the breeding chamber.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] 1. This utility model achieves preliminary and secondary screening of wheat through the design of a two-stage screening plate, effectively removing impurities and unqualified wheat, improving screening efficiency. The liquid filling the selection chamber can naturally separate wheat according to quality (density). Plump seeds sink to the bottom of the water, while seeds of poor quality (which may be hollow, not plump, or contain less endosperm) float on the surface of the liquid. This design can accurately assess the quality of wheat and automatically separate high-quality wheat from low-quality wheat.

[0020] 2. This utility model uses an eccentric motion mechanism composed of a drive motor, drive shaft, support shaft, locking block, connecting plate and pusher plate to automatically agitate the liquid surface of the selection chamber and push it to the first diversion tank for discharge, thereby realizing automated impurity removal and improving the automation level of the screening process.

[0021] 3. This utility model, through the ingenious design of the funnel-shaped structure of the selection chamber and the second diversion channel, allows high-quality wheat to gather at the bottom of the funnel and not flow out with the water flow when the water is released. At the same time, the second diversion channel has flexible and diverse sealing methods, ensuring the sealing of the selection chamber and the convenience of use. The valve design at the center of the selection chamber allows for convenient centralized collection of high-quality wheat. In addition, the structure of the selection chamber and the second diversion channel also facilitates rinsing and cleaning after screening, ensuring the hygiene and service life of the equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of a screening device for wheat breeding according to the present invention;

[0024] Figure 2 This is a front view schematic diagram of a screening device for wheat breeding according to the present invention;

[0025] Figure 3 This is a side cross-sectional view of a screening device for wheat breeding according to the present invention;

[0026] Figure 4 This is a schematic diagram showing the installation location of the push-flow component;

[0027] Figure 5 for Figure 4 A magnified structural diagram at point A;

[0028] Figure 6 A side cross-sectional view of a screening device for wheat breeding according to this utility model;

[0029] Figure 7 for Figure 6 A magnified structural diagram at point B in the middle.

[0030] The labels in the diagram represent:

[0031] 1. Screening box; 2. Vibrating motor; 3. Feed inlet; 4. First screening plate; 5. Second screening plate; 6. Selection chamber; 7. First diversion channel; 8. Second diversion channel; 9. Flow propulsion assembly; 91. Drive motor; 92. First connecting block; 93. Drive shaft; 94. Support shaft; 95. Locking block; 96. Connecting plate; 97. Flow propulsion plate; 98. Second connecting block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0034] In some embodiments, please refer to the accompanying drawings. Figures 1-7 A screening device for wheat breeding includes: a first screening plate 4 for first-stage screening of wheat; a second screening plate 5 for second-stage screening of wheat; a selection chamber 6 disposed on one side of the second screening plate 5 for holding liquid for soaking wheat; a first diversion channel 7 disposed parallel to the side of the selection chamber 6; a second diversion channel 8 disposed parallel to the side of the selection chamber 6 for overflow of substandard wheat after soaking; and a propulsion assembly 9, which includes a drive shaft 93 rotatably disposed at the upper end of the selection chamber 6.

[0035] The propulsion assembly 9 also includes a support shaft 94, which is perpendicular to the drive shaft 93 and fixedly connected by a first connecting block 92. A locking block 95 is installed on the support shaft 94, and a connecting plate 96 is connected to one side of the locking block 95. A propulsion plate 97 is detachably installed on one side of the connecting plate 96 for collecting the overflow of substandard wheat after soaking through the first diversion channel 7 and the second diversion channel 8. The propulsion assembly 9 also includes a drive motor 91 and a second connecting block 98. The output end of the drive motor 91 is fixedly installed on one side of the first connecting block 92. The first connecting block 92 and the second connecting block 98 are connected by a drive shaft 93 and a support shaft 94. The inner side of the locking block 95 is provided with a hole and slot adapted to the support shaft 94. The support shaft 94 passes through the hole and slot. A bolt is rotatably fixed on one side of the locking block 95. One end of the bolt passes through the hole and slot on the inner side of the locking block 95 and abuts against the surface of the support shaft 94. The two sides of the connecting plate 96 are arc-shaped and are respectively installed on one side of the push plate 97 by a detachable card block. A card slot adapted to the detachable card block is installed on one side of the push plate 97.

[0036] The propulsion assembly 9 also includes a drive motor 91 and a second connecting block 98. The output end of the drive motor 91 is fixedly installed on one side of the first connecting block 92. The first connecting block 92 and the second connecting block 98 are connected by a drive shaft 93 and a support shaft 94.

[0037] This embodiment also includes a screening box 1. The top of the screening box 1 is provided with a vibration motor 2 and a feed inlet 3. The first screening plate 4 and the second screening plate 5 are installed vertically and parallel inside the screening box 1. The first screening plate 4 and the second screening plate 5 are respectively arranged in a progressively inclined manner inside the screening box 1. A screening port adapted to the first screening plate 4 and the second screening plate 5 is opened on one side of the screening box 1.

[0038] In this embodiment, when screening wheat for breeding, the wheat to be screened is poured into the screening box 1 through the feed inlet 3. It first passes through the first screening plate 4 for preliminary screening, and then enters the second screening plate 5 for secondary screening. The wheat, after two stages of screening (first screening plate 4 and second screening plate 5), falls into the selection chamber 6, which is filled with liquid used to soak the wheat. At this time, the second diversion trough 8 is closed. The floating wheat at this stage is usually of poor quality, possibly being hollow, not plump, or containing little endosperm. These seeds have low germination rates and weak growth potential due to insufficient energy reserves during germination. Plump seeds, due to their high endosperm content and density, will quickly sink to the bottom after soaking, while seeds floating on the surface, due to their low endosperm content or loose structure and lower density, are less likely to sink.

[0039] At this time, the drive motor 91 is started, and the drive motor 91 rotates, causing the drive shaft 93 to rotate. Since the support shaft 94 is fixed by the first connecting block 92 and the drive shaft 93, the support shaft 94 is relatively far away from the center position of the first connecting block 92, thus forming an eccentric position. The support shaft 94 moves along an eccentric trajectory, which in turn causes the support shaft 94, the locking block 95, the connecting plate 96, and the pusher plate 97 to move in the same direction. The pusher plate 97 agitates the low-quality wheat floating on the surface of the liquid in the selection chamber 6, causing the liquid surface to move towards the first diversion tank 7. The thrust of the water causes the low-quality wheat to be discharged from the first diversion trough 7 to the outside for collection. Then the second diversion trough 8 is opened to release all the water. It is worth mentioning that the selection chamber 6 has a funnel-shaped structure, and the second diversion trough 8 is located in the lower part of the middle. The high-quality wheat gathers at the bottom of the funnel and will not flow out with the release of the second diversion trough 8. In addition, the sealing method of the second diversion trough 8 includes, but is not limited to, screw plates, rotating valves and other sealing structures. The purpose is to seal the second diversion trough 8, so it will not be described in detail.

[0040] A valve is installed at the center of the selection chamber 6. Opening the valve at the center of the selection chamber 6 will allow high-quality wheat to be collected. If wheat remains in the selection chamber 6, it can be flushed away using high-pressure water or normal water flow through the second diversion channel 8.

[0041] In this embodiment, the inner side of the locking block 95 is provided with a slot that matches the support shaft 94. The support shaft 94 passes through the slot. A bolt is rotatably fixed on one side of the locking block 95. One end of the bolt passes through the slot inside the locking block 95 and abuts against the surface of the support shaft 94, which facilitates the installation and disassembly of the locking block 95, the connecting plate 96 and the push plate 97, and improves maintenance efficiency.

[0042] In this embodiment, the connecting plate 96 has an arc-shaped structure on both sides and is respectively installed on one side of the pusher plate 97 by detachable clips. One side of the pusher plate 97 is equipped with a slot that matches the detachable clip. The arc-shaped structure on both sides of the connecting plate 96 increases the support of the pusher plate 97 and effectively prevents wheat from falling onto its top and causing wheat accumulation or blockage. The detachable clip of the pusher plate 97 is tightened to one side of the connecting plate 96 by screws. The setting of the detachable clip and the slot on one side of the pusher plate 97 further facilitates the replacement of the pusher plate 97 and the detachable clip. It is worth mentioning that since the pusher plate 97 or the detachable clip is in contact with liquid for a long time, it is prone to rust spots or requires regular maintenance and replacement to increase the efficiency of its maintenance work.

[0043] In this embodiment, the number of locking block 95, connecting plate 96, and pusher plate 97 is at least two sets, and at least two sets of pusher plates 97 are fixed together by screw and washer structure. The two sets can ensure that at least one pusher plate 97 can work normally during use. If one set of pusher plates 97 is damaged, it can be quickly replaced by screw and washer structure, while also ensuring the firmness and stability between the two sets of pusher plates 97.

[0044] This utility model enhances the support and anti-clogging design of the pusher plate. The connecting plate 96 has an arc-shaped structure on both sides and is tightly connected to the pusher plate 97 via detachable clips. This design not only enhances the support of the pusher plate 97 and ensures its stability during operation, but also effectively prevents wheat from accumulating or clogging on the top of the pusher plate, thereby improving the continuity and efficiency of the screening process.

[0045] This utility model features a pusher plate structure that facilitates maintenance and replacement. The pusher plate 97 is connected to the connecting plate 96 via a detachable locking block, which is tightened with screws. This design makes replacing the pusher plate 97 extremely convenient. When the pusher plate 97 or the detachable locking block develops rust spots due to prolonged contact with liquid or requires periodic maintenance and replacement, the user can easily disassemble and replace the new parts, thereby extending the service life of the equipment and improving the efficiency of maintenance work.

[0046] This utility model improves the reliability of the screening process by using at least two sets of locking blocks 95, connecting plates 96, and pusher plates 97, with the two sets of pusher plates 97 fixed together by a screw and washer structure. This multi-set configuration ensures that even if one set of pusher plates 97 malfunctions or is damaged during use, the other set can still operate normally, thus guaranteeing the continuity and reliability of the screening process. Simultaneously, the screw and washer structure ensures the firm stability between the two sets of pusher plates 97, preventing a decrease in screening efficiency or equipment damage due to loose components.

[0047] In summary, this utility model, through ingenious mechanism design and structural optimization, achieves efficient and automated wheat screening, improves screening accuracy and efficiency, and facilitates wheat collection and equipment cleaning and maintenance, demonstrating significant technological advancement and practical value.

[0048] In addition, this utility model further enhances the overall performance and effectiveness of wheat screening equipment through innovative designs such as enhanced support and anti-clogging design of the pusher plate, pusher plate structure that facilitates maintenance and replacement, and improved reliability of the screening process, bringing users a more efficient, stable, and reliable screening experience.

[0049] In this embodiment, the first diversion channel 7 is opened on one side of the screening box 1 and is parallel to the top of the selection cavity 6, which can ensure the expulsion of low-quality wheat and prevent wheat from accumulating in the gap between the screening box 1 and the selection cavity 6.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A screening device for wheat breeding, characterized by, It includes: The first screening plate (4) is used for the first screening of wheat; The second screening plate (5) is used for the second screening of wheat; The breeding cavity (6) is arranged on one side of the second screening plate (5) and is used for carrying the liquid for soaking the wheat; The first shunt groove (7) is parallelly arranged on the side of the breeding cavity (6); The second shunt groove (8) is arranged on the side parallel to the breeding cavity (6) and is used for overflow of the defective products of the soaked wheat; The push flow assembly (9) includes a driving shaft (93) which is rotatably arranged at the upper end of the breeding cavity (6); The push flow assembly (9) further includes a support shaft (94) which is perpendicularly arranged with the driving shaft (93) and is fixedly connected through a first connecting block (92), the support shaft (94) is provided with a locking block (95), one side of the locking block (95) is connected with a connecting plate (96), and one side of the connecting plate (96) is detachably provided with a push flow plate (97) which is used for overflow of the defective products of the soaked wheat through the first shunt groove (7) and the second shunt groove (8) to the outside for collection.

2. The screening device for wheat breeding according to claim 1, characterized by It further includes a screening box (1), the top of the screening box (1) is respectively provided with a vibration motor (2) and a feeding port (3), the first screening plate (4) and the second screening plate (5) are vertically and parallelly arranged in the screening box (1), the first screening plate (4) and the second screening plate (5) are respectively arranged in the screening box (1) in a step-by-step inclined manner, and one side of the screening box (1) is provided with a screening port which is matched with the first screening plate (4) and the second screening plate (5).

3. The screening device for wheat breeding according to claim 2, wherein The push flow assembly (9) further includes a driving motor (91) and a second connecting block (98), the output end of the driving motor (91) and one side of the first connecting block (92) are fixedly arranged, and the first connecting block (92) and the second connecting block (98) are connected through the driving shaft (93) and the support shaft (94).

4. The screening device for wheat breeding according to claim 3, wherein The inner side of the locking block (95) is provided with a hole groove which is matched with the support shaft (94), the support shaft (94) penetrates the hole groove, one side of the locking block (95) is rotatably fixedly provided with a bolt, one end of the bolt penetrates the hole groove in the inner side of the locking block (95) and abuts against the surface of the support shaft (94).

5. The screening device for wheat breeding according to claim 4, wherein Both sides of the connecting plate (96) are in an arc-shaped structure and are respectively arranged on one side of the push flow plate (97) through detachable clamping blocks, and one side of the push flow plate (97) is provided with a clamping groove which is matched with the detachable clamping block.

6. The screening device for wheat breeding according to claim 5, wherein The number of the locking block (95), the connecting plate (96) and the push flow plate (97) is at least two groups, and the at least two groups of push flow plates (97) are fixed through a screw gasket structure.

7. The screening device for wheat breeding according to claim 6, wherein The first shunt groove (7) is arranged on one side of the screening box (1) and is parallel to the top of the breeding cavity (6).

8. The screening device for wheat breeding according to claim 7, characterized by A valve is arranged at the center position of the breeding cavity (6).

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