Nursery stock seed screening device

Abstract

The invention relates to the technical field of breeding treatment equipment, in particular to a nursery stock seed screening device which comprises a water selection box and a seed soaking box and further comprises a piston plate, the piston plate moves downwards to enable a cover plate to be turned upwards under water pressure, bad seeds floating on the water surface enter the upper portion of the piston plate through a through hole, when the piston plate moves upwards, the cover plate closes the through hole under the action of a torsion spring, and the seed soaking box is opened. Water carrying impurities is pushed up by the piston plate, enters the filter pipe through the vertical pipe, passes through the third filter plate and then flows back into the water separation box through suction force generated by upward movement of the piston plate, water saving is achieved, meanwhile, after water separation is completed, the double-layer fan-shaped filter plate can be driven to be deformed and spliced into a circle, then the double-layer fan-shaped filter plate is driven to move downwards, and good seeds are pushed and gathered at the bottom of the water separation box. Then the piston plate is driven to move downwards in a closed mode, good seeds are flushed into the seed soaking box through a small amount of water flow, water saving is achieved, meanwhile, when the lower piston plate moves downwards in a closed mode, the filtered water flow can be flushed back into the filter pipe, the filter pipe is cleaned, and follow-up use is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of breeding processing equipment, in particular to a seedling seed screening device. Background Art

[0002] In the breeding process, seed screening and seed soaking play a vital role. They are like the morning star for the growth of seedlings, laying a solid foundation for their future vigorous growth. Seed screening, as the first step in breeding, is of self-evident importance. It can not only ensure the quality of seeds and remove those damaged, diseased or underdeveloped seeds, but also significantly improve the germination rate, reduce the spread of diseases and pests, and enhance the adaptability of seedlings to the new environment. Seed soaking is another key step after screening. It nourishes each seed like spring rain, accelerates its germination process, further improves the germination rate, effectively prevents and controls diseases, and helps filter out bad seeds through physical means.

[0003] However, in the current breeding practice, although the water selection method used for seed screening can achieve the purpose of seed selection to a certain extent, it also exposes many shortcomings. This method is cumbersome and labor-intensive, and it is very easy to cause seed loss during the operation, resulting in a waste of precious resources. At the same time, the consumption of a large amount of water resources is also a major drawback of this method, which is contrary to the water-saving and environmental protection concept advocated by the current society. For this reason, we propose a seedling seed screening device. Summary of the invention

[0004] A technical problem to be solved by the present application is: how to design a more efficient and environmentally friendly screening and seed soaking device.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a seedling seed screening device, including a water selection box and a seed soaking box, and also includes:

[0006] A piston plate is slidably arranged in the water selection box, and a driving member connected to the piston plate is arranged in the water selection box for driving the piston plate to move;

[0007] A one-way flow member is arranged on the piston plate and is used to only allow water to flow from below the piston plate to above the piston plate when the piston plate is moved;

[0008] A filter tube is arranged on one side of the water selection box and is in communication with the water selection box. The piston plate is moved to drive the waste seeds into the filter tube and filter them, and then the water flows back into the water selection box;

[0009] The double-layer fan-shaped filter plate is arranged at the bottom end of the piston plate and connected to the driving part. When the water selection in the water selection box is completed, the driving part is used to first drive the double-layer fan-shaped filter plate to rotate relative to each other to form a circle, and then move downward relative to the piston plate to push the seeds to gather to the bottom end of the water selection box. Then, the driving part is used to drive the piston plate to move in a closed state, pressing the seeds into the seed soaking box, and at the same time using water flow to backwash and clean the filter tube.

[0010] In some embodiments, a conduit 1 is conductively connected between the water selection box and the seed soaking box, and an electronic valve is installed on the conduit 1;

[0011] The one-way flow component includes a through hole opened on the piston plate, a cover plate for sealing the through hole is arranged on the top of the piston plate, a shaft 1 is fixedly connected to the cover plate, the shaft 1 is rotatably connected to the piston plate, and one end of the shaft 1 is fixedly connected to a torsion spring 1, one end of the torsion spring 1 is fixed to the piston plate, and the piston plate is moved downward to utilize the water flow to push the cover plate to deflect, and at the same time the torsion spring 1 is twisted under force to provide it with self-restoring elastic force.

[0012] In some embodiments, the driving member includes a second shaft rotatably connected to the water selection box, a screw rod 1 is fixedly connected to the second shaft, one end of the screw rod 1 passes through the piston plate and is threadedly connected thereto, and the piston plate is driven to move when the second shaft is rotated;

[0013] A toothed disc 1 is fixedly connected to one end of the second shaft, a guide rod is fixedly connected to the water selection box, a mounting plate is fixedly connected to the guide rod, a driving motor is fixedly connected to the mounting plate, an output shaft of the driving motor is provided with a toothed disc 2 meshing with the first toothed disc, and a transmission member connected to the double-layer sector-shaped filter plate is provided on the water selection box. When the driving motor is started to drive the piston plate to move, the double-layer sector-shaped filter plate is driven to move synchronously by the transmission member.

[0014] In some embodiments, the double-layer fan-shaped filter plate includes a fan-shaped filter plate one and a fan-shaped filter plate two, the fan-shaped filter plate one is fixedly connected to a circular ring, the circular ring is fixedly connected to an axis four rotatably connected to the fan-shaped filter plate two, the transmission member includes an axis three rotatably connected to the water selection box, the axis three is fixedly connected to a screw two, the screw two slides through the piston plate, and the screw two passes through the fan-shaped filter plate two and is threadedly connected thereto, and one end of the axis three is fixedly connected to a toothed disc three meshing with a toothed disc two, and the drive motor is started to drive the fan-shaped filter plate two to move.

[0015] In some embodiments, the filter tube includes a filter plate three arranged on its inner wall, which is used to filter bad seeds. One end of the filter tube is conductively connected to a vertical pipe, and the vertical pipe is conductively connected to a water selection box. The bottom end of the filter tube is conductively connected to a conduit two which is conductively connected to the water selection box. A one-way valve assembly is arranged in the conduit two, which is used to only allow water to flow from the conduit two into the water selection box.

[0016] In some embodiments, a slide plate is slidably connected to the guide rod, a hollow shaft five is fixedly connected to the toothed disc two, the hollow shaft five is rotatably connected to the slide plate, and one end of the output shaft of the driving motor slides through the hollow shaft five, a sliding protrusion is fixedly connected to the hollow shaft five, and a sliding groove is provided on the output shaft of the driving motor, one end of the sliding protrusion is located in the sliding groove to guide the limited toothed disc two to slide, the slide plate is moved to drive the toothed disc two to disengage from the toothed disc one, and then the driving motor is started to drive only the fan-shaped filter plate two to move;

[0017] A spiral groove is provided on the circular ring, a sliding column is fixedly connected to the piston plate, one end of the sliding column is located in the spiral groove, and a torsion spring 2 is sleeved on the shaft 4, the two ends of which are respectively fixed to the sector filter plate 1 and the sector filter plate 2. When the sector filter plate 1 is in contact with the piston plate, the torsion spring 2 is in a torsion state, and at the same time, the sliding column is located in the spiral groove, the sector filter plate 2 moves to drive the sector filter plate 1 to separate from the piston plate, and at the same time, the torsion spring 2 resets to drive the sector filter plate 1 to rotate relative to the sector filter plate 2.

[0018] A locking piece connected to the cover plate is arranged inside the piston plate, and the cover plate is locked by the locking piece after the fan-shaped filter plate is separated from the piston plate.

[0019] In some embodiments, the locking member comprises a perforated plate fixedly connected to one side of the cover plate, a locking pin is slidably connected in the piston plate, a tension spring with one end fixed to the inner wall of the piston plate is sleeved on the locking pin, and the locking pin is pulled to drive it to separate from the perforated plate, and at the same time, the tension spring is stretched under force to provide a self-restoring elastic force for it;

[0020] A push rod is slidably connected to the piston plate, one end of the push rod is fixedly connected to a convex rod, one end of the locking pin is fixedly connected to a rectangular plate, an inclined groove is provided on the rectangular plate, one end of the convex rod is located in the inclined groove, and one end of the convex rod slides through the piston plate and contacts and abuts against a fan-shaped filter plate.

[0021] In some embodiments, the one-way valve assembly includes two limit rings fixedly connected in conduit 2, a blocking plate is slidably connected between the two limit rings, and a spring that contacts and resists one limit ring is fixedly connected to one side of the blocking plate.

[0022] In some embodiments, an inner tube is slidably connected in the vertical tube, and a sewage pipe is conductively connected to the vertical tube. A connecting hole 1 is opened on one side of the inner tube, and a connecting hole 2 is opened on the other side. A push rod is fixedly connected to one end of the inner tube, and an electric push rod is fixedly connected to the vertical tube. The extended end of the electric push rod is fixed to the push rod. The electric push rod is started to drive the inner tube to move to close the vertical tube and the water selection box, and at the same time, the vertical tube and the sewage pipe are conductively connected.

[0023] A sixth shaft is fixedly connected to the slide, and one end of the push rod is also fixedly connected to the sixth shaft. A lever is rotatably connected to the water selection box through a rotating shaft, and guide grooves are provided at both ends of the lever. The two shafts are correspondingly located in the two guide grooves, and the electric push rod is started to drive the slide to move;

[0024] A gear disc 4 having the same design as the gear disc 1 is fixedly connected to one end of the shaft 2;

[0025] A slide bar 1 is slidably connected inside the second conduit, a slide bar 2 is fixedly connected to one end of the inner tube, and a connecting rod is rotatably connected between the second slide bar and the first slide bar via a rotating shaft. When the inner tube is moved, the slide bar 1 is driven to move and push the blocking plate to move to release the blockage.

[0026] In some embodiments, one end of the second shaft is fixedly connected to a stirring rod.

[0027] The present invention has at least the following beneficial effects:

[0028] 1. This device moves the piston plate downward to make the cover plate flip up under water pressure, allowing the bad seeds floating on the water surface to enter the upper part of the piston plate through the through hole. When the piston plate moves upward, the cover plate closes the through hole under the action of the torsion spring, and the water carrying impurities is pushed up by the piston plate and enters the filter tube through the vertical pipe. After passing through the filter plate three, the water flows back to the water selection box by the suction force generated by the upward movement of the piston plate, thereby saving water.

[0029] 2. After the water selection is completed, this device can first drive the double-layer fan-shaped filter plate to deform and splice into a circle, and then drive it to move downward to push the good seeds to gather at the bottom of the water selection box, and then drive the piston plate to move downward in a closed manner, and then flush the good seeds into the seed soaking box through a small amount of water flow, thereby saving water.

[0030] 3. When the lower piston plate of the device moves downward in a closed manner, the filtered water can be backwashed into the filter tube to clean the filter tube for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0032] Figure 2 For the present invention Figure 1 Another structural diagram;

[0033] Figure 3 For the present invention Figure 1 Schematic diagram of the local cross-section structure;

[0034] Figure 4 For the present invention Figure 3 Another structural diagram;

[0035] Figure 5 For the present invention Figure 4A in the middle is a schematic diagram of the structure;

[0036] Figure 6 For the present invention Figure 4 Schematic diagram of the local cross-section structure;

[0037] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle B area;

[0038] Figure 8 For the present invention Figure 6 Schematic diagram of the structure of the middle C area;

[0039] Fig. 9 For the present invention Figure 2 Schematic diagram of the local cross-section structure;

[0040] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure of the middle D area;

[0041] Fig.11 For the present invention Fig. 9 Schematic diagram of the local cross-section structure;

[0042] Fig.12 This is a structural diagram of Example 2 of the present invention.

[0043] In the figure: 1-water selection box; 11-seed box; 2-piston plate; 3-driving member; 4-unidirectional flow member; 5-filter tube; 6-double-layer fan-shaped filter plate; 21-duct one; 22-electronic valve; 23-through hole; 24-cover plate; 25-axis one; 26-torsion spring one; 27-axis two; 28-screw rod one; 29-toothed disc one; 31-guide rod; 32-mounting plate; 33-driving motor; 34-toothed disc two; 35-transmission member; 36-fan-shaped filter plate one; 37-fan-shaped filter plate two; 38-circular ring; 39-axis four; 41-axis three; 42-screw rod two; 43-toothed disc three; 44-filter plate three; 45-vertical tube; 46-duct two; 47 - one-way valve assembly; 48- slide plate; 49- hollow shaft five; 51- sliding convex; 52- sliding groove; 53- spiral groove; 54- sliding column; 55- torsion spring two; 56- locking piece; 57- plate with holes; 58- locking pin; 59- tension spring; 61- push rod; 62- convex rod; 63- rectangular plate; 64- inclined sliding groove; 65- limiting ring; 66- blocking plate; 67- spring; 68- inner tube; 69- drain pipe; 71- connecting hole one; 72- connecting hole two; 73- push rod; 74- electric push rod; 75- shaft six; 76- lever; 77- guide groove; 78- toothed disc four; 79- sliding rod one; 81- sliding rod two; 82- connecting rod; 83- stirring rod. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Example 1: Please refer to Figure 1-Figure 11 The present invention provides a technical solution: a seedling seed screening device, including a water selection box 1 and a seed soaking box 11, and also includes:

[0046] The piston plate 2 is slidably disposed in the water selection box 1, and a driving member 3 connected to the piston plate 2 is disposed in the water selection box 1 for driving the piston plate 2 to move;

[0047] A one-way flow member 4 is provided on the piston plate 2 and is used to only allow water to flow from below the piston plate 2 to above the piston plate 2 when the piston plate 2 is moved;

[0048] The filter tube 5 is arranged on one side of the water selection box 1 and is in communication with the water selection box 1. The piston plate 2 is moved to drive the waste seeds into the filter tube 5 and filter them, and then the water flows back into the water selection box 1.

[0049] The double-layer sector filter plate 6 is arranged at the bottom of the piston plate 2 and connected to the driving member 3. When the water selection in the water selection box 1 is completed, the driving member 3 is used to first drive the double-layer sector filter plate 6 to rotate relatively to form a circle, and then move downward relative to the piston plate 2 to push the seeds to gather at the bottom of the water selection box 1. Then, the driving member 3 is used to drive the piston plate 2 to move in a closed state, and the seeds are pressed into the seed soaking box 11. At the same time, the filter tube 5 is cleaned by backwashing with water flow;

[0050] Specifically, the device moves the piston plate 2 downward to make the cover plate 24 turn up under the water pressure, allowing the bad seeds floating on the water surface to enter the upper part of the piston plate 2 through the through hole 23. When the piston plate 2 moves upward, the cover plate 24 closes the through hole 23 under the action of the torsion spring, and the water carrying impurities is pushed up by the piston plate 2, enters the filter tube 5 through the vertical pipe 45, and after passing through the filter plate 3 44, the water flows back to the water selection box 1 by the suction force generated by the upward movement of the piston plate 2, thereby saving water. At the same time, after the water selection is completed, the device can first drive the double-layer fan-shaped filter plate 6 to deform and splice into a circle, and then drive it to move downward to push the good seeds to gather at the bottom of the water selection box 1, and then drive the piston plate 2 to move downward in a closed manner, and then use a small amount of water to flush the good seeds into the seed soaking box 11, thereby saving water. At the same time, when the lower piston plate 2 of the device moves downward in a closed manner, the filtered water flow is backflushed into the filter tube 5 to clean the filter tube 5, which is convenient for subsequent use.

[0051] A conduit 21 is connected between the water selection box 1 and the seed soaking box 11, and an electronic valve 22 is installed on the conduit 21 to control whether the conduit 21 is conductive;

[0052] The one-way flow component 4 includes a through hole 23 opened on the piston plate 2, and a cover plate 24 for blocking the through hole 23 is arranged on the top of the piston plate 2. A shaft 25 is fixedly connected to the cover plate 24. The shaft 25 is rotatably connected to the piston plate 2 through a bearing, and one end of the shaft 25 is fixedly connected to a torsion spring 26, and one end of the torsion spring 26 is fixedly connected to the piston plate 2. When the piston plate 2 is moved downward, the water flow is used to push the cover plate 24 to deflect, and at the same time, the torsion spring 26 is twisted under force to provide it with self-restoring elastic force.

[0053] The driving member 3 includes a shaft 27 rotatably connected to the water selection box 1 through a bearing, a screw 28 is fixedly connected to the shaft 27, one end of the screw 28 passes through the piston plate 2 and is connected thereto through a thread, and the screw 28 slides through the fan-shaped filter plate 2 37, and when the shaft 27 is rotated, the screw 28 is driven to rotate, thereby driving the piston plate 2 to move;

[0054] A toothed disc 29 is fixedly connected to one end of the second shaft 27, a guide rod 31 is fixedly connected to the water selection box 1, a mounting plate 32 is fixedly connected to the guide rod 31, a drive motor 33 is fixedly connected to the mounting plate 32, and an output shaft of the drive motor 33 is provided with a toothed disc 2 34 meshing with the toothed disc 29, and a transmission member 35 connected to the double-layer fan-shaped filter plate 6 is provided on the water selection box 1. When the drive motor 33 is started to drive the piston plate 2 to move, the double-layer fan-shaped filter plate 6 is driven to move synchronously by the transmission member 35, and when the device performs normal screening work, the double-layer fan-shaped filter plate 6 can move synchronously with the piston plate 2 in a state of being in contact with the piston plate 2.

[0055] The double-layer sector filter plate 6 includes a sector filter plate 1 36 and a sector filter plate 2 37. The sector filter plate 1 36 is fixedly connected with a ring 38. The ring 38 is fixedly connected with a shaft 4 39 rotatably connected to the sector filter plate 2 37. The transmission member 35 includes a shaft 3 41 rotatably connected to the water selection box 1 through a bearing. The shaft 3 41 is fixedly connected with a screw 2 42. The screw 2 42 slides through the piston plate 2, and the screw 2 42 passes through the sector filter plate 2 37 and is threaded with the shaft 3 41. The shaft 3 is connected, and one end of the shaft 3 41 is fixedly connected with a gear disc 3 43 meshing with the gear disc 2 34. When the device is performing screening work normally, the gear disc 1 29 and the gear disc 3 43 are both meshed with the gear disc 2 34. At this time, the drive motor 33 is started to drive the gear disc 2 34 to rotate, and then the gear disc 1 29 and the gear disc 3 43 are rotated, thereby driving the shaft 2 27 and the shaft 3 41 to rotate, and then driving the screw 1 28 and the screw 2 42 to rotate, thereby driving the fan-shaped filter plate 2 37 and the piston plate 2 to move synchronously.

[0056] The filter tube 5 includes a filter plate 3 44 fixedly connected to its inner wall, which is used to filter bad seeds. One end of the filter tube 5 is conductively connected to a vertical pipe 45, and the vertical pipe 45 is conductively connected to the water selection box 1. The bottom end of the filter tube 5 is conductively connected to a conduit 2 46 which is conductively connected to the water selection box 1. A one-way valve assembly 47 is arranged in the conduit 2 46, which is used to only allow water to flow from the conduit 2 46 into the water selection box 1. The one-way valve assembly 47 is designed to prevent the piston plate 2 from moving downward to drive water to enter the filter tube 5 when the device is normally water selecting, thereby avoiding washing impurities in the filter tube 5 back into the water selection box 1.

[0057] A slide plate 48 is slidably connected to the guide rod 31, a hollow shaft 5 49 is fixedly connected to the toothed disc 2 34, the hollow shaft 5 49 and the slide plate 48 are rotatably connected through a bearing, and the output shaft 1 25 end of the drive motor 33 slides through the hollow shaft 5 49, a sliding protrusion 51 is fixedly connected to the inner wall of the hollow shaft 5 49, and a sliding groove 52 is provided on the output shaft of the drive motor 33, one end of the sliding protrusion 51 is located in the sliding groove 52 to guide the limited toothed disc 2 34 to slide, the moving slide plate 48 drives the toothed disc 2 34 to disengage from the toothed disc 1 29, and then the drive motor 33 is started to drive only the fan-shaped filter plate 2 37 to move;

[0058] A spiral groove 53 is provided on the circular ring 38, and a sliding column 54 is fixedly connected to the piston plate 2. One end of the sliding column 54 is located in the spiral groove 53, and a torsion spring 2 55 is sleeved on the shaft 4 39, and the two ends are respectively fixed to the fan-shaped filter plate 1 36 and the fan-shaped filter plate 2 37. When the fan-shaped filter plate 1 36 is in contact with the piston plate 2, the torsion spring 2 55 is in a torsion state. At the same time, the sliding column 54 is located in the spiral groove 53, and the fan-shaped filter plate 2 37 moves to drive the fan-shaped filter plate 1 36 to separate from the piston plate 2. At the same time, the torsion spring 2 55 resets and drives the fan-shaped filter plate 1 36 to rotate relative to the fan-shaped filter plate 2 37 to splice into a circle of the same size as the inner cavity of the water selection box 1. At the same time, when the fan-shaped filter plate 2 37 is moved to connect with the fan-shaped filter plate 1 36 to the piston plate 2, the sliding column 54 is driven to move along the spiral groove 53 to drive the fan-shaped filter plate 1 36 to rotate and retract relative to the fan-shaped filter plate 2 37. At the same time, the torsion spring 2 55 is also synchronously subjected to force and twisted to provide it with self-restoring elastic force;

[0059] A locking piece 56 connected to the cover plate 24 is provided inside the piston plate 2 , and the cover plate 24 is locked by the locking piece 56 after the sector-shaped filter plate 36 is separated from the piston plate 2 .

[0060] The locking member 56 includes a perforated plate 57 fixedly connected to one side of the cover plate 24, a locking pin 58 is slidably connected in the piston plate 2, and a tension spring 59 is sleeved on the locking pin 58, one end of which is fixed to the inner wall of the piston plate 2. The locking pin 58 is pulled to drive it to separate from the perforated plate 57, and at the same time, the tension spring 59 is stretched under force to provide a self-restoring elastic force for it;

[0061] A push rod 61 is slidably connected to the piston plate 2, one end of the push rod 61 is fixedly connected to a convex rod 62, one end of the locking pin 58 is fixedly connected to a rectangular plate 63, an inclined groove 64 is provided on the rectangular plate 63, one end of the convex rod 62 is located in the inclined groove 64, and one end of the convex rod 62 slides through the piston plate 2 and contacts and abuts against the fan-shaped filter plate 36. When the fan-shaped filter plate 36 is separated from the piston plate 2, the tension spring 59 is reset to drive the locking pin 58 to move and insert into the perforated plate 57 to lock the cover plate 24. At this time, the piston plate 2 becomes a sealed whole. On the contrary, when the fan-shaped filter plate 36 moves to dock with the piston plate 2, it pushes the push rod 61 to move to drive the convex rod 62 to slide in the inclined groove 64, thereby driving the locking pin 58 to move away from the perforated plate 57 to release the lock of the cover plate 24.

[0062] The one-way valve assembly 47 includes two limit rings 65 fixedly connected in the second conduit 46 , a blocking plate 66 is slidably connected between the two limit rings 65 , and a spring 67 that contacts and resists one of the limit rings 65 is fixedly connected to one side of the blocking plate 66 .

[0063] An inner tube 68 is slidably connected in the vertical tube 45, and a sewage pipe 69 is connected to the vertical tube 45. A connecting hole 1 71 is opened on one side of the inner tube 68, and a connecting hole 2 72 is opened on the other side. A push rod 73 is fixedly connected to one end of the inner tube 68, and an electric push rod 74 is fixedly connected to the vertical tube 45. The extended end of the electric push rod 74 is fixed to the push rod 73. The electric push rod 74 is started to drive the inner tube 68 to move to close the vertical tube 45 and the water selection box 1, and at the same time connect the vertical tube 45 and the sewage pipe 69;

[0064] A shaft 6 75 is fixedly connected to the slide plate 48, and one end of the push rod 73 is also fixedly connected to the shaft 6 75. A lever 76 is rotatably connected to the water selection box 1 through a rotating shaft. Both ends of the lever 76 are provided with guide grooves 77. The two shafts 25 are correspondingly located in the two guide grooves 77. The electric push rod 74 is started to drive the slide plate 48 to move.

[0065] A gear disc 4 78 of the same design as the gear disc 1 29 is fixedly connected to one end of the shaft 27;

[0066] A slide bar 79 is slidably connected in the conduit 2 46, and a slide bar 81 is fixedly connected to one end of the inner tube 68. A connecting rod 82 is rotatably connected between the slide bar 81 and the slide bar 79 via a rotating shaft. When the inner tube 68 is moved, the slide bar 79 is driven, and then the slide bar 79 is driven to move via the connecting rod 82 to push the blocking plate 66 to move to release the blockage, so that when the piston plate 2 is moved down in the closed state, the water flow can smoothly enter the filter tube 5 to wash the filter plate 3 44;

[0067] The electric push rod 74 is started to drive the push rod 73 to move, and the lever 76 is used to drive the slide plate 48 to move;

[0068] Specifically, when the device body is used for water selection operation, the connecting hole 1 71 on the inner tube 68 is connected to the water selection box 1, and the inner tube 68 closes the sewage pipe 69. When the water selection is completed, the electric push rod 74 is started to drive the gear disc 2 34 to engage with the gear disc 3 43 and the gear disc 4 78 separately, and the connecting hole 2 72 on the inner tube 68 is connected to the sewage pipe 69. In this process, the double-layer fan-shaped filter plate 6 first gathers the good seeds, and then the piston plate 2 moves down to discharge the good seeds. At the same time, the filter tube 5 is flushed with water flow and the bad seeds are discharged from the sewage pipe 69.

[0069] Example 2: Please refer to Figure 1-Figure 12 , the present invention provides a technical solution: Example 2 is optimized on the basis of Example 1;

[0070] One end of the second shaft 27 is fixedly connected to a stirring rod 83, so that when the piston plate 2 moves, the stirring rod 83 is synchronously driven to rotate and stir the seeds at the bottom of the water selection box 1 to prevent bad seeds from being pressed by good seeds and improve the screening efficiency.

[0071] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A seedling seed screening device, comprising a water selection box (1) and a seed soaking box (11), characterized in that: Also included are: A piston plate (2) is slidably arranged in the water selection box (1), and a driving member (3) connected to the piston plate (2) is arranged in the water selection box (1) for driving the piston plate (2) to move; A one-way flow member (4) is arranged on the piston plate (2) and is used to only allow water to flow from below the piston plate (2) to above the piston plate (2) when the piston plate (2) is moved; A filter tube (5) is arranged on one side of the water selection box (1) and is in communication with the water selection box (1). The piston plate (2) is moved to drive the waste to enter the filter tube (5) and filter it, and then the water flows back into the water selection box (1); A double-layered sector-shaped filter plate (6) is arranged at the bottom end of the piston plate (2) and connected to a driving member (3). When the water selection of the water selection box (1) is completed, the driving member (3) is used to first drive the double-layered sector-shaped filter plate (6) to rotate relatively to form a circle, and then move downward relative to the piston plate (2) to push the seeds to gather at the bottom end of the water selection box (1). Then, the driving member (3) drives the piston plate (2) to move in a closed state, and presses the seeds into the seed soaking box (11). At the same time, the filter tube (5) is cleaned by backwashing with water flow.

2. The seedling seed screening device according to claim 1, characterized in that: A conduit 1 (21) is conductively connected between the water selection box (1) and the seed soaking box (11), and an electronic valve (22) is installed on the conduit 1 (21); The one-way flow member (4) comprises a through hole (23) formed on the piston plate (2); a cover plate (24) for sealing the through hole (23) is arranged on the top of the piston plate (2); a shaft (25) is fixedly connected to the cover plate (24); the shaft (25) is rotatably connected to the piston plate (2); one end of the shaft (25) is fixedly connected to a torsion spring (26); one end of the torsion spring (26) is fixed to the piston plate (2); when the piston plate (2) is moved downward, the water flow is used to push the cover plate (24) to deflect; at the same time, the torsion spring (26) is twisted under force to provide a self-restoring elastic force for it.

3. The seedling seed screening device according to claim 2, characterized in that: The driving member (3) comprises a second shaft (27) rotatably connected to the water selection box (1), a first screw (28) being fixedly connected to the second shaft (27), one end of the first screw (28) passing through the piston plate (2) and being connected thereto by a thread, and when the second shaft (27) is rotated, the piston plate (2) is driven to move; A toothed disc 1 (29) is fixedly connected to one end of the second shaft (27), a guide rod (31) is fixedly connected to the water selection box (1), a mounting plate (32) is fixedly connected to the guide rod (31), a drive motor (33) is fixedly connected to the mounting plate (32), an output shaft of the drive motor (33) is provided with a toothed disc 2 (34) meshing with the toothed disc 1 (29), and a transmission member (35) connected to the double-layer sector-shaped filter plate (6) is provided on the water selection box (1), the drive motor (33) is started to drive the piston plate (2) to move, and the transmission member (35) is used to drive the double-layer sector-shaped filter plate (6) to move synchronously.

4. The seedling seed screening device according to claim 3, characterized in that: The double-layer sector filter plate (6) comprises a sector filter plate 1 (36) and a sector filter plate 2 (37), the sector filter plate 1 (36) being fixedly connected with a circular ring (38), the circular ring (38) being fixedly connected with a shaft 4 (39) rotatably connected with the sector filter plate 2 (37), the transmission member (35) comprising a shaft 3 (41) rotatably connected with the water selection box (1), the shaft 3 (41) being fixedly connected with a screw 2 (42), the screw 2 (42) slidingly passing through the piston plate (2), the screw 2 (42) passing through the sector filter plate 2 (37) and being threadedly connected thereto, and one end of the shaft 3 (41) being fixedly connected with a toothed disc 3 (43) meshing with the toothed disc 2 (34), the driving motor (33) being started to drive the sector filter plate 2 (37) to move.

5. The seedling seed screening device according to claim 4, characterized in that: The filter tube (5) comprises a filter plate three (44) arranged on the inner wall thereof, which is used to filter bad seeds. One end of the filter tube (5) is conductively connected to a vertical pipe (45), and the vertical pipe (45) is conductively connected to the water selection box (1). The bottom end of the filter tube (5) is conductively connected to a conduit two (46) which is conductively connected to the water selection box (1). A one-way valve assembly (47) is arranged in the conduit two (46) to allow water to flow from the conduit two (46) into the water selection box (1).

6. The seedling seed screening device according to claim 5, characterized in that: A slide plate (48) is slidably connected to the guide rod (31), a hollow shaft (49) is fixedly connected to the second toothed disc (34), the hollow shaft (49) is rotatably connected to the slide plate (48), and one end of the output shaft (25) of the drive motor (33) slides through the hollow shaft (49), a sliding protrusion (51) is fixedly connected to the hollow shaft (49), and a sliding groove (52) is provided on the output shaft of the drive motor (33), one end of the sliding protrusion (51) is located in the sliding groove (52) to guide the sliding of the second limiting toothed disc (34), and the slide plate (48) is moved to drive the second toothed disc (34) to disengage from the first toothed disc (29), and then the drive motor (33) is started to drive only the second sector filter plate (37) to move; A spiral groove (53) is provided on the circular ring (38), a sliding column (54) is fixedly connected to the piston plate (2), one end of the sliding column (54) is located in the spiral groove (53), and a torsion spring (55) is sleeved on the shaft (39), the two ends of which are respectively fixed to the sector filter plate (36) and the sector filter plate (37). When the sector filter plate (36) is in contact with the piston plate (2), the torsion spring (55) is in a torsion state, and at the same time, the sliding column (54) is located in the spiral groove (53), and the sector filter plate (37) moves to drive the sector filter plate (36) to separate from the piston plate (2), and at the same time, the torsion spring (55) is reset to drive the sector filter plate (36) to rotate relative to the sector filter plate (37); A locking piece (56) connected to the cover plate (24) is arranged inside the piston plate (2), and the cover plate (24) is locked by the locking piece (56) after the sector-shaped filter plate (36) is separated from the piston plate (2).

7. The seedling seed screening device according to claim 6, characterized in that: The locking member (56) comprises a perforated plate (57) fixedly connected to one side of the cover plate (24); a locking pin (58) is slidably connected inside the piston plate (2); a tension spring (59) is sleeved on the locking pin (58) and one end of the tension spring is fixed to the inner wall of the piston plate (2); the locking pin (58) is pulled to drive it to separate from the perforated plate (57); at the same time, the tension spring (59) is stretched under force to provide a self-restoring elastic force for it; A push rod (61) is slidably connected to the piston plate (2), one end of the push rod (61) is fixedly connected to a convex rod (62), one end of the locking pin (58) is fixedly connected to a rectangular plate (63), an inclined groove (64) is provided on the rectangular plate (63), one end of the convex rod (62) is located in the inclined groove (64), and one end of the convex rod (62) slides through the piston plate (2) and contacts and abuts against a sector-shaped filter plate (36).

8. The seedling seed screening device according to claim 7, characterized in that: The one-way valve assembly (47) comprises two limit rings (65) fixedly connected in the second conduit (46), a blocking plate (66) being slidably connected between the two limit rings (65), and a spring (67) contacting and abutting against one of the limit rings (65) being fixedly connected to one side of the blocking plate (66).

9. The seedling seed screening device according to claim 8, characterized in that: An inner tube (68) is slidably connected inside the vertical tube (45), and a sewage pipe (69) is conductively connected to the vertical tube (45). A connecting hole (71) is provided on one side of the inner tube (68), and a connecting hole (72) is provided on the other side. A push rod (73) is fixedly connected to one end of the inner tube (68), and an electric push rod (74) is fixedly connected to the vertical tube (45). The extended end of the electric push rod (74) is fixed to the push rod (73). When the electric push rod (74) is started, the inner tube (68) is driven to move to close the vertical tube (45) and the water selection box (1), and at the same time, the vertical tube (45) and the sewage pipe (69) are conductively connected. A shaft six (75) is fixedly connected to the slide plate (48), and one end of the push rod (73) is also fixedly connected to the shaft six (75). A lever (76) is rotatably connected to the water selection box (1) via a rotating shaft. Both ends of the lever (76) are provided with guide grooves (77). The two shafts one (25) are correspondingly located in the two guide grooves (77). The electric push rod (74) is started to drive the slide plate (48) to move. A toothed disc 4 (78) having the same design as the toothed disc 1 (29) is fixedly connected to one end of the second shaft (27); A slide bar 1 (79) is slidably connected inside the second conduit (46), and a slide bar 2 (81) is fixedly connected to one end of the inner tube (68). A connecting rod (82) is rotatably connected between the second slide bar (81) and the first slide bar (79) via a rotating shaft. When the inner tube (68) is moved, the slide bar 1 (79) is driven to move and push the blocking plate (66) to move to release the blockage.

10. The seedling seed screening device according to claim 9, characterized in that: One end of the second shaft (27) is fixedly connected with a stirring rod (83).

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