Seed screening equipment for agricultural production

Abstract

The utility model discloses seed screening equipment for agricultural production, which belongs to the technical field of seed screening and comprises a screening barrel, supporting legs are fixedly connected to the periphery of the lower end of the screening barrel, a central column is fixedly connected to the middle of the inner end of the screening barrel, and a pair of opening and closing valves is mounted on the lower inner wall of the screening barrel. A sleeve frame cage is fixedly connected to the outer end of the upper side of the screening barrel, a containing net is fixedly installed at the lower end of the screening barrel, an inflation bag is inlaid in the middle of the center column, an air pump is fixedly connected to the upper end of the center column and connected with the inflation bag, and a rotating plate is rotationally connected to the middle of the center column. The purpose of pouring rice seeds into the screening barrel through low-concentration saline water for good and bad seed screening can be achieved, meanwhile, part of pathogenic bacteria can be inhibited through the low-concentration saline water, the risk of seed-borne diseases is reduced, full seeds and wizened seeds are effectively distinguished through the density difference in saline water seed selection, and therefore the sowing quality is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, and more specifically, to a seed screening device for agricultural production. Background Technology

[0002] There are various types of seed screening equipment used in agricultural production. They select qualified and superior seeds by taking advantage of the differences between seeds and impurities in terms of shape, size, specific gravity, surface characteristics and aerodynamic characteristics.

[0003] Chinese Patent Publication No. CN222369312U discloses a seed screening device. This patent comprises a driving component, a screening component, and a collection component. The driving component works in conjunction with the screening component. The motor within the screening component generates centrifugal force to throw out stones and damaged seeds. The centrifugal force propels the stones downwards through the hole a of the conical cylinder a, while the lighter damaged seeds are buoyed upwards through the hole b of the conical cylinder b (whose radius is smaller than that of the middle cylinder b). After screening, the collection component promptly collects and removes the screened stones. In summary, this device, by incorporating the driving, screening, and collection components, can remove damaged seeds and stones mixed in with rice seeds.

[0004] However, when the above-mentioned seed screening equipment screens good and bad rice seeds, it will still screen some bad seeds into good seeds. In fact, the pathogens of bad seeds may spread to good seeds, causing the risk of seed-borne diseases. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a seed screening device for agricultural production. It can separate good and bad rice seeds by pouring low-concentration saline solution into the screening tank. At the same time, the low-concentration saline solution can inhibit some pathogens and reduce the risk of seed-borne diseases. The saline solution can effectively distinguish between plump and shriveled seeds by utilizing density differences, thereby effectively improving the sowing quality.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A seed screening device for agricultural production includes a screening barrel with supporting feet fixedly connected to its lower circumference. A central column is fixedly connected to the middle of the inner end of the screening barrel. A pair of opening and closing valves are installed on the lower inner wall of the screening barrel. A frame cage is fixedly connected to the upper outer end of the screening barrel. A holding net is fixedly installed at the lower end of the screening barrel. An air bladder is embedded in the middle of the central column. An air pump is fixedly connected to the upper end of the central column and connected to the air bladder. A rotating plate is rotatably connected to the middle of the central column and is slidably connected to the lower inner wall of the screening barrel. A motor is installed inside the central column, and the output end of the motor is fixedly connected to the rotating plate. The purpose of screening rice seeds by pouring low-concentration saline solution into the screening barrel is to separate good and bad seeds. At the same time, the low-concentration saline solution can inhibit some pathogens and reduce the risk of seed-borne diseases. The saline solution effectively distinguishes between plump and shriveled seeds by utilizing density differences, thereby effectively improving the sowing quality.

[0010] Furthermore, the frame cage includes a sleeve plate, which is sleeved on the upper outer end of the screening barrel. A screen plate is installed on the lower end of the sleeve plate. A pair of connecting rods are fixedly connected to one end of the sleeve plate near the screening barrel, and the connecting rods are fixedly connected to the screening barrel. The sleeve plate is fixed to the upper outer end of the screening barrel by the connecting rods. The sleeve plate is used to collect the overflowing bad seeds that have been screened, and the screen plate separates the bad seeds from the water sieve, thereby facilitating the extraction and processing of bad seeds.

[0011] Furthermore, the screen plate includes a water filter screen, which is installed at the lower end of the sleeve plate. A ring magnet is fixedly connected to the outer end of the water filter screen, and a magnetic sheet is fixedly connected to the lower end of the sleeve plate. Water and bad seeds are filtered through the water filter screen, and the ring magnet and the magnetic sheet are attracted and fixed, making it convenient to remove the screen plate after filtration to process the bad seeds.

[0012] Furthermore, the holding net includes a net bag, which is installed at the lower end of the screening barrel. A pair of fixing plates are fixedly connected to the upper end of the net bag. A pair of fixing grooves matching the fixing plates are opened at the lower end of the screening barrel. A horizontal groove is opened at the outer end of the fixing plate. A locking block is slidably connected in the horizontal groove. A locking groove matching the locking block is opened on the inner wall of the fixing groove. An L-shaped sliding groove is opened at the outer end of the fixing plate and is connected to the horizontal groove. A pressing plate is slidably connected in the L-shaped sliding groove. A lever plate is fixedly connected to the lower end of the pressing plate. A compression spring is fixedly connected between the lever plate and the inner wall of the L-shaped sliding groove. The spring force of the compression spring presses and pushes the lever plate and the pressing plate, causing the pressing plate to press the locking block, thereby locking the locking block into the locking groove for fixation. This fixes the entire holding net at the lower end of the screening barrel.

[0013] Furthermore, the holding net also includes a limiting block. A limiting groove is formed in the inner wall of the transverse groove. The limiting block is slidably connected in the limiting groove and is fixedly connected to the locking block. A return spring is fixedly connected between the limiting block and the inner wall of the transverse groove. The limiting block can limit the locking block to prevent it from falling off when the holding net is removed. Under the elastic force of the return spring, when the pressing plate is disengaged from the locking block by the push plate, the locking block is pushed by the rebound force of the return spring to return the locking block to its original position and slide into the transverse groove, thereby disengaging the locking block from the locking groove. This facilitates the removal of the holding net to extract the good seeds from the screening section.

[0014] Furthermore, the compression spring has a greater elastic force than the return spring. The upper end of the block away from the compression plate, the lower end of the block near the compression plate, and the upper end of the compression plate near the block are all arc-shaped. The greater elastic force of the compression spring can overcome the elastic force of the return spring, thereby enabling the compression plate to squeeze and push the block. The arc shape reduces friction between them, facilitating their sliding under force.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This scheme can achieve the purpose of screening rice seeds by pouring low-concentration salt water into the screening bucket to separate good and bad seeds. At the same time, the low-concentration salt water can inhibit some pathogens and reduce the risk of seed-borne diseases. Salt water seed selection can effectively distinguish between plump and shriveled seeds by utilizing density differences, thereby effectively improving the sowing quality.

[0018] (2) In this scheme, the frame cage includes a sleeve plate, which is sleeved on the upper outer end of the screening barrel. A screen plate is installed on the lower end of the sleeve plate. A pair of connecting rods are fixedly connected to the end of the sleeve plate near the screening barrel, and the connecting rods are fixedly connected to the screening barrel. The sleeve plate is fixed to the upper outer end of the screening barrel by the connecting rods. The sleeve plate is used to collect the overflowing bad seeds that are screened, and the screen plate separates the bad seeds from the water screen, thereby facilitating the extraction and processing of bad seeds.

[0019] (3) In this solution, the screen plate includes a water filter screen, which is installed at the lower end of the sleeve plate. A ring magnet is fixedly connected to the outer end of the water filter screen, and a magnetic sheet is fixedly connected to the lower end of the sleeve plate. Water and bad seeds are filtered through the water filter screen, and the ring magnet and the magnetic sheet are attracted and fixed, making it convenient to remove the screen plate after filtration to process the bad seeds.

[0020] (4) In this scheme, the holding net includes a net bag, which is installed at the lower end of the screening barrel. A pair of fixing plates are fixedly connected to the upper end of the net bag. A pair of fixing grooves matching the fixing plates are opened at the lower end of the screening barrel. A horizontal groove is opened at the outer end of the fixing plate. A locking block is slidably connected in the horizontal groove. A locking groove matching the locking block is opened on the inner wall of the fixing groove. An L-shaped sliding groove is opened at the outer end of the fixing plate, and the L-shaped sliding groove is connected to the horizontal groove. A pressing plate is slidably connected in the L-shaped sliding groove. A lever plate is fixedly connected to the lower end of the pressing plate. A pressing spring is fixedly connected between the lever plate and the inner wall of the L-shaped sliding groove. The lever plate and the pressing plate are pressed and pushed by the elastic force of the pressing spring, so that the pressing plate presses the locking block, thereby locking the locking block into the locking groove for fixation, thus fixing the entire holding net at the lower end of the screening barrel.

[0021] (5) The holding net in this scheme also includes a limiting block. A limiting groove is opened on the inner wall of the transverse groove. The limiting block is slidably connected in the limiting groove and fixedly connected to the card block. A return spring is fixedly connected between the limiting block and the inner wall of the transverse groove. The limiting block can limit the card block to prevent the card block from falling off when the holding net is removed. Under the action of the return spring, when the push plate is moved to make the pressing plate disengage from the pressing of the card block, the card block pushes the limiting block under the rebound force of the return spring to reset and slide into the transverse groove, thereby making the card block disengage from the card groove, so as to facilitate the removal of the holding net and the extraction of good seeds at the screening point.

[0022] (6) In this scheme, the compression spring force is greater than the reset spring force. The upper end of the block away from the compression plate, the lower end of the block near the compression plate, and the upper end of the compression plate near the block are all arc-shaped. The greater compression spring force can overcome the reset spring force, so that the compression plate can squeeze and push the block. The arc-shaped setting can reduce the friction between them and facilitate their sliding under force. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a front cross-sectional view of the structure of this utility model;

[0025] Figure 3 In this utility model Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is a schematic diagram of the structure of the screen plate in this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Screening barrel; 2. Support legs; 3. Central column; 4. Opening and closing valve; 5. Sleeve cage; 51. Sleeve plate; 52. Screen plate; 521. Water filter screen; 522. Ring magnet; 53. Connecting rod; 6. Holding net; 61. Net bag; 62. Fixing plate; 63. Locking block; 64. Squeezing plate; 65. Pulley plate; 66. Squeezing spring; 67. Limiting block; 68. Return spring; 7. Inflatable bladder; 8. Air pump; 9. Motor; 10. Rotating plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1:

[0033] Please see Figure 1-4A seed screening device for agricultural production includes a screening barrel 1, with support feet 2 fixedly connected to the lower four sides of the screening barrel 1. A central column 3 is fixedly connected to the middle of the inner end of the screening barrel 1. A pair of opening and closing valves 4 are installed on the lower inner wall of the screening barrel 1. A frame cage 5 is fixedly connected to the upper outer end of the screening barrel 1. A holding net 6 is fixedly installed at the lower end of the screening barrel 1. An air bladder 7 is embedded in the middle of the central column 3. An air pump 8 is fixedly connected to the upper end of the central column 3 and is connected to the air bladder 7. A rotating plate 10 is rotatably connected to the middle of the central column 3 and is slidably connected to the lower inner wall of the screening barrel 1. A motor 9 is installed inside the central column 3, and the output end of the motor 9 is fixedly connected to the rotating plate 10. Rice seeds are poured into the screening barrel 1 by pouring low-concentration salt water to screen for good and bad seeds. At the same time, the low-concentration salt water can inhibit some pathogens and reduce the risk of seed-borne diseases. Salt water seed selection effectively distinguishes plump and shriveled seeds by density differences, thereby effectively improving the sowing quality.

[0034] The frame cage 5 includes a sleeve plate 51, which is sleeved on the upper outer end of the screening barrel 1. A screen plate 52 is installed on the lower end of the sleeve plate 51. A pair of connecting rods 53 are fixedly connected to one end of the sleeve plate 51 near the screening barrel 1. The connecting rods 53 are fixedly connected to the screening barrel 1. The sleeve plate 51 is fixed to the upper outer end of the screening barrel 1 by the connecting rods 53. The sleeve plate 51 is used to collect the overflowing bad seeds that have been screened, and the screen plate 52 separates the bad seeds from the water sieve, thereby facilitating the extraction and processing of bad seeds.

[0035] The screen plate 52 includes a water filter screen 521, which is installed at the lower end of the sleeve plate 51. A ring magnet 522 is fixedly connected to the outer end of the water filter screen 521, and a magnetic sheet is fixedly connected to the lower end of the sleeve plate 51. Water and bad seeds are filtered through the water filter screen 521, and the ring magnet 522 is attracted and fixed to the magnetic sheet, making it convenient to remove the screen plate 52 after filtration to process the bad seeds.

[0036] The holding net 6 includes a net bag 61, which is installed at the lower end of the screening barrel 1. A pair of fixing plates 62 are fixedly connected to the upper end of the net bag 61. A pair of fixing grooves matching the fixing plates 62 are opened at the lower end of the screening barrel 1. A horizontal groove is opened at the outer end of the fixing plate 62. A locking block 63 is slidably connected in the horizontal groove. A locking groove matching the locking block 63 is opened on the inner wall of the fixing groove. An L-shaped sliding groove is opened at the outer end of the fixing plate 62 and is connected to the horizontal groove. A pressing plate 64 is slidably connected in the L-shaped sliding groove. A lever plate 65 is fixedly connected to the lower end of the pressing plate 64. A compression spring 66 is fixedly connected between the lever plate 65 and the inner wall of the L-shaped sliding groove. The lever plate 65 and the pressing plate 64 are pressed and pushed by the elastic force of the compression spring 66, so that the pressing plate 64 presses the locking block 63, thereby locking the locking block 63 into the locking groove for fixation. In this way, the entire holding net 6 is fixed at the lower end of the screening barrel 1.

[0037] The holding net 6 also includes a limiting block 67. A limiting groove is opened in the inner wall of the transverse groove. The limiting block 67 is slidably connected in the limiting groove and is fixedly connected to the locking block 63. A return spring 68 is fixedly connected between the limiting block 67 and the inner wall of the transverse groove. The limiting block 67 can limit the locking block 63 to prevent it from falling off when the holding net 6 is removed. Under the elastic force of the return spring 68, when the pressing plate 64 is disengaged from the locking block 63 by the push plate 65, the locking block 63 is pushed by the rebound force of the return spring 68 to push the limiting block 67 to return and slide into the transverse groove, thereby disengaging the locking block 63 from the locking groove. This makes it convenient to remove the holding net 6 and extract the good seeds from the screening section.

[0038] The compression spring 66 has a greater elastic force than the return spring 68. The upper end of the locking block 63 on the side away from the compression plate 64, the lower end of the locking block 63 on the side close to the compression plate 64, and the upper end of the compression plate 64 on the side close to the locking block 63 are all arc-shaped. The greater elastic force of the compression spring 66 can overcome the elastic force of the return spring 68, thereby enabling the compression plate 64 to squeeze and push the locking block 63. The arc-shaped design can reduce the friction between them and facilitate their sliding under force.

[0039] When using it, please refer to Figure 1-4 First, all the rice seeds are poured into the screening bucket 1. Then, the screening bucket 1 is filled with low-concentration salt water. Since the density of low-concentration salt water is greater than that of water, it can better distinguish between plump and shriveled rice seeds. Plump rice seeds will sink to the bottom, while shriveled or insect-damaged rice seeds will float on the surface, thus achieving screening. At the same time, the motor 9 is started to drive the rotating plate 10 to rotate, so that the rotating plate 10 agitates the rice seeds piled at the bottom, thereby giving the piled rice seeds more space and allowing bad seeds to float to the top. Then, the air pump 8 is used to inflate the air bag 7, causing the air bag 7 to expand outward until it touches the bottom. The inner wall of the screening barrel 1 is filled with an inflatable air bladder 7, which causes the brine to carry away the floating bad seeds and overflow, which are then collected by the frame cage 5. After that, the good seeds are poured into the holding net 6 by activating the opening and closing valve 4. Compared with seed screening equipment used in traditional agricultural production, this utility model can achieve the purpose of screening rice seeds by pouring low-concentration brine into the screening barrel 1 to separate good and bad seeds. At the same time, the low-concentration brine can inhibit some pathogens and reduce the risk of seed-borne diseases. The brine seed selection can effectively distinguish between plump and shriveled seeds by utilizing density differences, thereby effectively improving the sowing quality.

[0040] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A seed screening device for agricultural production, comprising a screening tank (1), characterized in that: The screening barrel (1) is fixedly connected to support feet (2) around its lower end. A central column (3) is fixedly connected to the middle of the inner end of the screening barrel (1). A pair of opening and closing valves (4) are installed on the lower inner wall of the screening barrel (1). A frame cage (5) is fixedly connected to the upper outer end of the screening barrel (1). A holding net (6) is fixedly installed at the lower end of the screening barrel (1). An air bladder (7) is embedded in the middle of the central column (3). An air pump (8) is fixedly connected to the upper end of the central column (3) and is connected to the air bladder (7). A rotating plate (10) is rotatably connected to the middle of the central column (3) and is slidably connected to the lower inner wall of the screening barrel (1). A motor (9) is installed inside the central column (3) and the output end of the motor (9) is fixedly connected to the rotating plate (10).

2. The seed screening device for agricultural production according to claim 1, characterized in that: The frame cage (5) includes a sleeve plate (51), which is sleeved on the upper outer end of the screening barrel (1). A screen plate (52) is installed at the lower end of the sleeve plate (51). A pair of connecting rods (53) are fixedly connected to one end of the sleeve plate (51) near the screening barrel (1), and the connecting rods (53) are fixedly connected to the screening barrel (1).

3. The seed screening device for agricultural production according to claim 2, characterized in that: The screen plate (52) includes a water filter screen (521), which is installed at the lower end of the sleeve plate (51). A ring magnet (522) is fixedly connected to the outer end of the water filter screen (521), and a magnetic sheet is fixedly connected to the lower end of the sleeve plate (51).

4. The seed screening device for agricultural production according to claim 1, characterized in that: The holding net (6) includes a net bag (61), which is installed at the lower end of the screening barrel (1). A pair of fixing plates (62) are fixedly connected to the upper end of the net bag (61). A pair of fixing grooves matching the fixing plates (62) are opened at the lower end of the screening barrel (1). A horizontal groove is opened at the outer end of the fixing plate (62). A locking block (63) is slidably connected in the horizontal groove. A locking groove matching the locking block (63) is opened on the inner wall of the fixing groove. An L-shaped sliding groove is opened at the outer end of the fixing plate (62), and the L-shaped sliding groove is connected to the horizontal groove. A pressing plate (64) is slidably connected in the L-shaped sliding groove. A lever plate (65) is fixedly connected at the lower end of the pressing plate (64). A compression spring (66) is fixedly connected between the lever plate (65) and the inner wall of the L-shaped sliding groove.

5. The seed screening device for agricultural production according to claim 4, characterized in that: The holding net (6) also includes a limiting block (67), a limiting groove is provided on the inner wall of the transverse groove, the limiting block (67) is slidably connected in the limiting groove, and the limiting block (67) is fixedly connected to the locking block (63). A return spring (68) is fixedly connected between the limiting block (67) and the inner wall of the transverse groove.

6. The seed screening device for agricultural production according to claim 5, characterized in that: The spring force of the compression spring (66) is greater than that of the return spring (68). The upper end of the block (63) away from the compression plate (64), the lower end of the block (63) near the compression plate (64), and the upper end of the compression plate (64) near the block (63) are all arc-shaped.

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