Gravity type seed cleaner

Abstract

The utility model discloses a gravity type seed cleaning machine which comprises a base, a loading plate and a main body part, the main body part comprises a screening device, a seed selection device and a drying device; the screening device comprises a barrel and an induced draft fan; the top of the barrel is connected with an induced draft fan; the seed selection device comprises a salt selection bin, an inferior seed collection bin, a primary cleaning bin, a secondary cleaning bin and a preparation bin; the preparation bin is communicated with the salt separation bin through a third water pump; the top of the salt separation bin is communicated with the bottom of the barrel; the salt separation bin is communicated with the inferior seed collection bin and the primary cleaning bin through a conveying pipeline; the primary cleaning bin is communicated with the secondary cleaning bin through a conveying pipeline; the secondary cleaning bin communicates with the drying device through a conveying pipeline, and the drying device is arranged on the base. The technical problems that composite cleaning of seeds and integration of seed cleaning and treatment cannot be achieved are solved, and the seed cleaning effect and the working efficiency of seed treatment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seed cleaning equipment, in particular to a gravity seed cleaner. Background Art

[0002] Seeds are the most basic production materials in agricultural production. The quality of seeds directly affects the entire growth cycle of crops, as well as the final yield and quality. During the process of seed harvesting and drying, some impurities will be mixed in. In order to improve the purity of seeds and ensure the seed quality for planting, it is necessary to carefully clean the seeds.

[0003] At this time, seed cleaning equipment can utilize the differences in the shape, size, specific gravity, surface characteristics, and aerodynamic characteristics of different seeds and inclusions to separate the seeds from the impurities, so as to obtain high-quality seeds that meet the requirements.

[0004] For example, in the application document with the application number 202321308919.8, a gravity seed cleaner is disclosed, which includes a screening box. On both sides of the inner cavity of the screening box, a first sealing ring is fixedly installed. Inside the first sealing ring, a pull-out filter screen is movably installed. On the top of the pull-out filter screen, a sealing rubber block is fixedly installed. On both sides of the bottom of the inner cavity of the screening box, a second sealing ring is fixedly installed. Inside the second sealing ring, a driving motor is fixedly installed. Inside the driving motor, a stirring rod is fixedly installed. Through the setting of the screening box, it is convenient to clean the seeds. Through the setting of the first sealing ring, it can prevent water leakage at the filter screen connection. Through the setting of the pull-out filter screen, it is convenient for users to separate inferior seeds with strong quality and small density from high-quality seeds. Through the setting of the sealing rubber block, it is convenient to combine the pull-out filter screens on both sides.

[0005] In view of the above related technologies, although the above device can separate seeds with different qualities and different densities, to a certain extent, it improves the effect of seed cleaning. However, in actual use, the above device cannot achieve the compound cleaning of seeds and the integration of seed cleaning and treatment, seriously affecting the effect of seed cleaning and the working efficiency of seed treatment. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a gravity seed cleaner to solve the technical problems that the compound cleaning of seeds and the integration of seed cleaning and treatment cannot be achieved, and improve the effect of seed cleaning and the working efficiency of seed treatment.

[0007] In view of this, the present application provides a gravity seed cleaner, which includes a base, a load-bearing plate and a main body part; the load-bearing plate is arranged above the base through support columns; the main body part includes a screening device, a seed selection device and a drying device; the screening device includes a cylinder body and an induced draft fan; the top of the cylinder body is connected to the induced draft fan through a ventilation duct; the induced draft fan is arranged on the load-bearing plate;

[0008] The seed selection device includes a salt selection bin, a defective seed collection bin, a primary cleaning bin, a secondary cleaning bin and a preparation bin; the preparation bin is arranged on the load-bearing plate, and the preparation bin is connected to a water storage tank through a second water pump; the second water pump and the water storage tank are arranged on the base; the preparation bin is communicated with the salt selection bin through a third water pump; the third water pump is arranged on the load-bearing plate; the salt selection bin is located above the preparation bin, and the top of the salt selection bin is communicated with the bottom of the cylinder body; the bottom of the salt selection bin is inclined, the first side of the salt selection bin is communicated with the top of the defective seed collection bin through a first conveying pipeline, and the bottom of the defective seed collection bin is inclined; the second side of the salt selection bin is communicated with the first side of the primary cleaning bin through a second conveying pipeline, and the bottom of the primary cleaning bin is inclined; the second side of the primary cleaning bin is communicated with the first side of the secondary cleaning bin through a third conveying pipeline, and the bottom of the secondary cleaning bin is inclined; the second side of the secondary cleaning bin is communicated with the drying device through a fourth conveying pipeline, and the drying device is arranged on the base.

[0009] Further, a sedimentation channel and a sedimentation chamber communicated with the sedimentation channel are also arranged between the cylinder body and the induced draft fan, the sedimentation chamber is arranged on the load-bearing plate, the sedimentation channel is connected with the ventilation duct, and an arc-shaped baffle is arranged on the ventilation duct, and the arc-shaped baffle is located at the connection of the sedimentation channel and the ventilation duct.

[0010] Further, the cylinder body is provided with a screening assembly; the screening assembly includes two opposite slide rails arranged on the cylinder body and a sieve plate slidably arranged on the two slide rails; a magnetic block is arranged on one side of the sieve plate; two opposite openings are arranged on the cylinder body, a cylinder is arranged at one opening, and a movable baffle is hinged at the other opening; an electromagnet device is arranged on the piston rod of the cylinder, and the electromagnet device corresponds to the magnetic block.

[0011] Further, a discharge hopper is arranged at the bottom of the cylinder body, and the discharge hopper is communicated with the top of the salt selection bin; the cylinder body is provided with opposite sealing plates and diversion plates, and the sealing plates and the diversion plates are located above the discharge hopper and below the screening assembly.

[0012] Further, a defective seed recovery plate is arranged on the first side of the salt selection bin; the bottom of the defective seed recovery plate is movably connected to the first side of the salt selection bin; the top of the defective seed recovery plate is inclined; a sealing rubber strip is arranged at the top of the defective seed recovery plate.

[0013] Further, the first conveying pipeline, the second conveying pipeline, the third conveying pipeline and the fourth conveying pipeline are all conveying pipes, and the conveying pipes are uniformly provided with meshes; an outer pipe is sleeved on the conveying pipe, and a support piece for supporting the outer pipe is arranged between the outer pipe and the conveying pipe.

[0014] Further, the outer pipes of the first conveying pipe and the second conveying pipe are connected to the preparation bin, and the outer pipes of the third conveying pipe and the fourth conveying pipe are connected to the water storage tank.

[0015] Further, the drying device includes an outer cover, a spiral stirring rod, a heater, a motor, a blower and a ventilation cover; the spiral stirring rod is arranged inside the outer cover, and the spiral stirring rod is provided with a heater; the motor is arranged on one side of the outer cover, and the output end of the motor is connected to the spiral stirring rod; the blower is arranged on the other side of the outer cover; the ventilation cover is arranged on the outer cover.

[0016] Further, the drying device is further provided with a ninth opening and a discharge port; the ninth opening is arranged above the outer cover and on one side of the motor; the ninth opening is communicated with the second side of the secondary cleaning bin through the fourth conveying pipe; the discharge port is arranged below the outer cover and on one side of the blower.

[0017] It can be seen from the above technical solutions that the present utility model has the following advantages:

[0018] The gravity seed cleaner provided by the present utility model realizes the composite cleaning of seeds and the integration of seed cleaning and treatment, and improves the effect of seed cleaning and the working efficiency of seed treatment.

[0019] Through the settings of the screening device, the seed selection device and the drying device, the seeds are multi-cleared to separate inferior seeds and superior seeds, and the superior seeds are cleaned and dried, realizing the integration of seed cleaning to drying, simplifying the operation process, improving the effect of seed cleaning and the working efficiency, ensuring the seed germination rate of the superior seeds while facilitating the storage of the superior seeds, and thus increasing the crop yield;

[0020] Through the settings of the electromagnet device and the movable baffle, the disassembly, cleaning and replacement of the sieve plate are realized, ensuring the precision of seed cleaning; through the setting of the inferior seed recovery plate, the recovery of inferior seeds is realized, reducing the labor cost and improving the working efficiency; through the setting of the conveying pipe, the separation of inferior seeds, superior seeds and brine is realized, improving the repeated utilization rate of brine and avoiding the waste of water resources. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a gravity seed cleaner of the present utility model;

[0022] Figure 2 It is a sectional view of the cylinder body of a gravity seed cleaner of the present utility model;

[0023] Figure 3 It is a right view of the cylinder body of a gravity seed cleaner of the present utility model;

[0024] Figure 4 For the present utility modelFigure 2 Enlarged view at location A;

[0025] Figure 5 For the present utility model Figure 2 Enlarged view at location B;

[0026] Figure 6 For the present utility model Figure 1 Enlarged view at location C;

[0027] Figure 7 Top view of the first sieve plate of a gravity seed cleaner of the present utility model;

[0028] Figure 8 Top view of the second sieve plate of a gravity seed cleaner of the present utility model;

[0029] Figure 9 Cross-sectional view of the salt selection bin of a gravity seed cleaner of the present utility model;

[0030] Figure 10 Cross-sectional view of the primary cleaning bin of a gravity seed cleaner of the present utility model;

[0031] Figure 11 Cross-sectional view of the secondary cleaning bin of a gravity seed cleaner of the present utility model;

[0032] Figure 12 Cross-sectional view of the preparation bin of a gravity seed cleaner of the present utility model;

[0033] Figure 13 Right view of the preparation bin of a gravity seed cleaner of the present utility model;

[0034] Figure 14 Cross-sectional view of the drying device of a gravity seed cleaner of the present utility model;

[0035] Figure 15 Front cross-sectional view of the conveying pipe and the outer pipe of a gravity seed cleaner of the present utility model;

[0036] Figure 16 Side cross-sectional view of the conveying pipe and the outer pipe of a gravity seed cleaner of the present utility model.

[0037] Wherein, the reference signs are:

[0038] 1. Base; 2. Load-bearing plate; 3. Cylinder; 31. First chamber; 311. Feed inlet; 312. First sieve plate; 313. First opening; 314. Second opening; 32. Second chamber; 321. Second sieve plate; 322. Third opening; 323. Fourth opening; 33. Third chamber; 331. Sealing plate; 332. Drainage plate; 333. Discharge hopper; 4. Induced draft fan; 5. Sedimentation channel; 6. Sedimentation chamber; 7. Arc baffle; 8. Filter screen; 9. Salt selection bin; 91. First water inlet; 92. Fifth opening; 93. Inferior seed recovery plate; 94. Sealing rubber strip; 95. First water outlet; 96. First baffle; 10. Inferior seed collection bin; 11. Primary cleaning bin; 111. First spiral agitator; 112. Second water inlet; 113. Sixth opening; 114. Second water outlet; 115; Second baffle; 12. Secondary cleaning bin; 121. Second spiral agitator; 122. Third water inlet; 123. Seventh opening; 124. Third water outlet; 125. Third baffle; 13. Preparation bin; 131. Third spiral agitator; 132. Fourth water inlet; 133. Fifth water inlet; 134. Eighth opening; 135. Salt storage bin; 136. Fourth baffle; 137. Fourth water outlet; 14. Water storage tank; 15. First water pump; 16. Second water pump; 17. Third water pump; 18. Drying device; 181. Outer cover; 182. Spiral stirring rod; 183. Heater; 184. Motor; 185. Blower; 186. Ventilation hood; 187. Ninth opening; 188. Discharge port; 19. Support column; 20. Support plate; 21. Slide rail one; 22. First cylinder; 23. Second cylinder; 24. First fixing piece; 25. Electromagnet device; 26. Magnet; 27. Movable baffle; 28. Handle; 29. Slide rail two; 30. Second fixing piece; 31-a. Torsion spring shaft; 32-a. Shock pad; 33-a. Mounting frame; 34-a. Ventilation duct; 35-a. Delivery pipe; 35-b. Outer pipe; 35-c. Support piece; 35-d. Support ring. Detailed implementation manner

[0039] To enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. In the description of the embodiments of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of this application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific situations.

[0041] For ease of understanding, please refer to Figures 1 to 14 , an embodiment of a gravity seed cleaner provided by the present utility model, comprising: a main body part and a control part.

[0042] The main body part includes a base 1, a load plate 2, a screening device, a seed selection device, and a drying device 18; the base 1 is arranged at the bottom of the main body part. Above the base 1, there are successively a screening device, a seed selection device, a load plate 2, and a drying device 18 from top to bottom. On both sides of the top of the base 1, two support columns 19 are fixedly installed. The two support columns 19 are fixedly provided with a load plate 2 at the top. The support columns 19 are used to support and fix the load plate 2; between the two support columns 19, there are also two support plates 20. The distances between the two support plates 20 are equal and they are vertically arranged between the base 1 and the load plate 2. At the center positions of the two support plates 20, first through holes are respectively opened. The first through holes are circular. The positions of the two first through holes are opposite and at the same horizontal position, so that the drying device 18 can penetrate through the two first through holes at the same time. The two support plates 20 can provide support for both the drying device 18 and the load plate 2, as Figure 1 shown.

[0043] It should be noted that the diameter of the first through hole is the same as that of the drying device 18, which can be used to fix the drying device 18 and prevent the drying device 18 from shifting during operation.

[0044] The screening device includes a cylinder body 3 and a blower 4; the cylinder body 3 is a cuboid hollow structure, and its inner cavity is provided with a first chamber 31, a second chamber 32 and a third chamber 33, and each chamber is arranged in sequence along the vertical direction; the first chamber 31 includes a feed inlet 311, a first sieve plate 312, a first opening 313 and a second opening 314; the feed inlet 311 is opened on the left side wall of the first chamber 31 for feeding seeds to be cleaned; the first sieve plate 312 is arranged at the bottom of the first chamber 31 and is slidably connected to two first slide rails 21 at the bottom of the first chamber 31; the first sieve plate 312 is a rectangular plate-like structure, and its width is the same as that of the cylinder body 3. The first sieve plate 312 includes a first sieve mesh and a limiting frame arranged around the first sieve mesh. The first sieve mesh is a coarse-hole sieve mesh that can let seeds pass through, and is used to screen out heavy impurities mixed in the seeds. The limiting frame arranged around the first sieve mesh is a cuboid structure, which is used to surround and fix the four sides of the first sieve mesh, and can also be slidably connected to the two first slide rails 21, as Figure 2 shown.

[0045] It should be noted that the two first slide rails 21 are arranged on the front and rear side walls at the bottom of the first chamber 31, are opposite and parallel in position, and extend horizontally to both sides along the front and rear side walls, which is convenient for the first sieve plate 312 to perform vibration screening and replacement.

[0046] It should be noted that a magnetic block 26 is fixedly installed on the limiting frame of the first sieve plate 312 near the first opening 313.

[0047] A first opening 313 is opened on the left side wall at the bottom of the first chamber 31. The first opening 313 communicates the first chamber 31 with the outside of the cylinder body 3 and is located on the left side of the first sieve plate 312; on the left side of the first opening 313, that is, at the opening outside the cylinder body 3, a first cylinder 22 is horizontally arranged; on the right side of the first opening 313, that is, at the opening inside the cylinder body 3, a first fixing member 24 is provided. The left side of the first fixing member 24 is fixedly connected to the piston rod of the first cylinder 22, and an electromagnet device 25 is provided on the right side; the electromagnet device 25 is opposite to the magnetic block 26 on the limiting frame of the first sieve plate 312. When the electromagnet device 25 is energized, it will generate magnetism and can attract the magnetic block 26 arranged on the first sieve plate 312. In this way, driven by the first cylinder 22, the first sieve plate 312 can perform horizontal reciprocating motion along the first slide rails 21, thereby completing vibration screening. It should be noted that during the vibration screening process, the first sieve plate 312 is also always inside the opening and will not break out of the opening, causing un-screened seeds to enter the next process.

[0048] On the right side wall at the bottom of the first bin chamber 31, a second opening 314 is provided. The second opening 314 enables the first bin chamber 31 to communicate with the outside of the cylinder 3 and is located on the right side of the first sieve plate 312. At the second opening 314, a movable baffle 27 is movably installed through a hinge, enabling the movable baffle 27 to be turned outward and opened around the hinge. And a handle 28 is fixedly installed on the outside of the movable baffle 27 (i.e., the outside of the cylinder 3). When the first sieve plate 312 needs to be cleaned or replaced, the operator can open the movable baffle 27 through the handle 28, take out the first sieve plate 312 along the direction of the first slide rail 21, and after completing the operation, place the cleaned or new first sieve plate 312 back on the bottom of the first bin chamber 31 along the direction of the first slide rail 21.

[0049] At the top of the first bin chamber 31, an opening is provided for connecting the first bin chamber 31 with the induced draft fan 4 through a ventilation duct 34 - a, enabling the induced draft fan 4 to preliminarily screen the seeds to be cleaned in the first bin chamber 31 and screen out the light impurities mixed in the seeds.

[0050] The induced draft fan 4 is provided on the load - bearing plate 2 through a mounting frame 33 - a and is located on the right side of the cylinder 3. One side of the air inlet of the induced draft fan 4 is connected to the ventilation duct 34 - a. A multi - layer filter screen 8 is provided in the ventilation duct 34 - a in front of the air inlet to prevent the light impurities in the ventilation duct 34 - a from entering the induced draft fan 4, as Figure 1 shown.

[0051] In the ventilation duct 34 - a between the cylinder 3 and the induced draft fan 4, a vertically placed settling channel 5 and a settling chamber 6 connected to the settling channel 5 are provided. One end of the settling channel 5 is connected to the ventilation duct 34 - a, and the other end is connected to the top of the settling chamber 6. The settling chamber 6 is arranged on the load - bearing plate 2 and is located between the cylinder 3 and the induced draft fan 4. Above the settling channel 5, an arc - shaped baffle 7 is fixedly installed, as Figure 1 shown. When the induced draft fan 4 operates, it can cause a sharp change in the air flow direction, thereby separating the light impurities from the air flow by means of the inertial force of the light impurities in the air flow itself. The separated light impurities are collected into the settling chamber 6 through the settling channel 5 under the action of gravity.

[0052] The second bin chamber 32 includes a second sieve plate 321, a third opening 322, and a fourth opening 323. The second sieve plate 321 is arranged at the bottom of the second bin chamber 32 and is slidably connected to two second slide rails 29 at the bottom of the second bin chamber 32. The second sieve plate 321 includes a second sieve mesh and a limiting frame arranged around the second sieve mesh. The structure of the second sieve plate 321 is basically the same as that of the first sieve plate 312, but the mesh number of the second sieve mesh is larger than that of the first sieve mesh, and is used for secondary screening of the heavy impurities mixed in the seeds. The limiting frame arranged around the second sieve mesh is of a cuboid structure, which is used to surround and fix the four sides of the second sieve mesh and can also be slidably connected to the two second slide rails 29.

[0053] It should be noted that the two slide rails 29 are arranged on the front and rear side walls at the bottom of the second chamber 32, opposite and parallel to each other, and extend horizontally towards both sides along the front and rear side walls, facilitating the vibration screening and replacement of the second sieve plate 321.

[0054] It should be noted that a magnetic block 26 is fixedly installed on the limiting frame of the second sieve plate 321 near the third opening 322.

[0055] A third opening 322 is provided on the left side wall at the bottom of the second chamber 32. The third opening 322 enables the second chamber 32 to communicate with the outside of the cylinder 3 and is located on the left side of the second sieve plate 321; on the left side of the third opening 322, that is, at the opening outside the cylinder 3, a second cylinder 23 is horizontally arranged; on the right side of the third opening 322, that is, at the opening inside the cylinder 3, a second fixing member 30 is provided. The left side of the second fixing member 30 is fixedly connected to the piston rod of the second cylinder 23, and an electromagnet device 25 is provided on the right side; the electromagnet device 25 is opposite to the magnetic block 26 on the limiting frame of the first sieve plate 312. When the electromagnet device 25 is energized, it generates magnetism and can attract the magnetic block 26 provided on the second sieve plate 321. In this way, driven by the second cylinder 23, the second sieve plate 321 can perform horizontal reciprocating motion along the slide rail 29, thereby completing the vibration screening.

[0056] A fourth opening 323 is provided on the right side wall at the bottom of the second chamber 32. The fourth opening 323 enables the second chamber 32 to communicate with the outside of the cylinder 3 and is located on the right side of the second sieve plate 321; a movable baffle 27 is movably installed at the fourth opening 323 through a hinge, enabling the movable baffle 27 to be turned outwards and opened around the hinge. And a handle 28 is fixedly installed on the outside of the movable baffle 27 (that is, outside the cylinder 3), facilitating the operator to open the movable baffle 27 through the handle 28 when the second sieve plate 321 needs to be cleaned or replaced, take out the second sieve plate 321 along the direction of the slide rail 29, and after completing the operation, re-place the cleaned or new second sieve plate 321 along the direction of the slide rail 29 at the bottom of the second chamber 32.

[0057] The third chamber 33 includes a sealing plate 331, a drainage plate 332 and a discharge hopper 333; the sealing plate 331 is arranged at the middle position of the third chamber 33. The upper surface of the sealing plate 331 is inclined downwards, and the lower surface is perpendicular to the side wall of the third chamber 33. The sealing plate 331 is fixedly installed on the left side wall of the third chamber 33. While bearing part of the weight of the seeds, the sealing plate 331 can also guide the seeds to fall from the right side.

[0058] The drainage plate 332 is arranged at the middle position of the third chamber 33, opposite to and in contact with the sealing plate 331; the drainage plate 332 is installed on the right side wall of the third chamber 33 through the torsion spring rotating shaft 31-a, so that the drainage plate 332 can be turned downward from the horizontal position. When it is turned, the included angle with the lower surface side of the sealing plate 331 is always an acute angle. After the drainage plate 332 is turned, the drainage plate 332 will automatically reset under the action of the torsion spring rotating shaft 31-a.

[0059] It should be noted that the torsion spring rotating shaft 31-a can enable the drainage plate 332 to bear the downward pressure of the seeds in the chamber within a certain range. When the pressure of the seeds accumulated on the drainage plate 332 is greater than the maximum strength that the torsion spring can bear, the drainage plate 332 turns downward. Under the guidance of the sealing plate 331 and the drainage plate 332, the seeds fall into the discharge hopper 333. When the pressure exerted by the seeds on the drainage plate 332 is less than the maximum strength that the torsion spring can bear, the drainage plate 332 will automatically reset under the drive of the torsion spring rotating shaft 31-a, so that the flow rate of the seeds in the chamber is controlled, and a certain buffer time is reserved for the subsequent processing process.

[0060] The discharge hopper 333 is located below the sealing plate 331 and the drainage plate 332. The lower port of the discharge hopper 333 is connected to the seed selection device through the shock-absorbing gasket 32-a, which can guide the seeds to fall into the seed selection device under the action of gravity. The shock-absorbing gasket 32-a can also reduce the vibration generated during the operation of the screening device, thereby reducing the impact of vibration on the seed selection device, as Figure 6 shown.

[0061] The seed selection device includes a salt selection bin 9, a defective seed collection bin 10, a primary cleaning bin 11, a secondary cleaning bin 12, a preparation bin 13 and a detection mechanism.

[0062] The salt selection bin 9 is a cuboid hollow structure, which is arranged on the load-bearing plate 2 through the mounting frame 33-a, and the bottom is inclined. The left side of the bottom is the highest end (i.e., the first side), and the right side of the bottom is the lowest end (i.e., the second side); there is an opening at the top of the salt selection bin 9, and the salt selection bin 9 is connected to the discharge hopper 333 through the opening, so that the seeds fall into the salt selection bin 9 after the preliminary screening by the screening device, and the seeds can be selected by brine, as Figure 1 shown.

[0063] It should be noted that in all the components with an inclined bottom, the first side is the side where the highest end of the bottom is located, and the second side is the side where the lowest end of the bottom is located.

[0064] A first water inlet 91 is provided on the left side wall of the salt selection bin 9. The position of the first water inlet 91 is close to the top of the salt selection bin 9 and is used to convey the prepared brine into the salt selection bin 9. At a position on the left side wall of the salt selection bin 9 and close to its bottom, a fifth opening 92 is provided. The fifth opening 92 enables the salt selection bin 9 to communicate with the inferior seed collection bin 10. An inferior seed recovery plate 93 is provided at the fifth opening 92. One end of the inferior seed recovery plate 93 is installed on the left side wall of the salt selection bin 9 through a rotating shaft, so that the inferior seed recovery plate 93 can be flipped from the left side wall of the salt selection bin 9 into the bin. When it is flipped, the angle with the left side wall of the salt selection bin 9 is always an acute angle. The other end of the inferior seed recovery plate 93 is a telescopic end, which can extend while the inferior seed recovery plate 93 is flipped into the bin until the end contacts the right side wall of the salt selection bin 9, as Figure 9 shown.

[0065] It should be noted that the initial position of the inferior seed recovery plate 93 is embedded in the left side wall of the salt selection bin 9. The end of the telescopic end of the inferior seed recovery plate 93 is provided with a certain downward inclination angle, and a sealing rubber strip 94 is provided on the inclined surface of the end, so that when the inferior seed recovery plate 93 contacts the right side wall of the salt selection bin 9 or is embedded in the left side wall of the salt selection bin 9, water leakage at the joint can be prevented.

[0066] At a position on the right side wall of the salt selection bin 9 and close to its bottom, a first water outlet 95 is provided. The first water outlet 95 enables the salt selection bin 9 to communicate with the primary cleaning bin 11. A first baffle 96 is provided at the first water outlet 95. The first baffle 96 is slidably installed on the right side wall of the salt selection bin 9 to facilitate controlling the opening and closing of the first water outlet 95, as Figure 9 shown.

[0067] The inferior seed collection bin 10 is a cuboid hollow structure. It is installed on the load-bearing plate 2 through the mounting frame 33-a and is located on the left side of the salt selection bin 9. Its height is lower than that of the salt selection bin 9. The bottom of the inferior seed collection bin 10 is inclined. The right side of the bottom is the highest end (i.e., the first side), and the left side of the bottom is the lowest end (i.e., the second side), which is convenient for guiding the selected inferior seeds out of the bin under the action of gravity. An opening is provided at the top of the inferior seed collection bin 10. The opening is connected to the fifth opening 92 of the salt selection bin 9 through a first conveying pipe, so that the selected inferior seeds are driven by the brine and recovered into the inferior seed collection bin 10 through the inferior seed recovery plate 93. When the inferior seed recovery plate 93 of the salt selection bin 9 is opened, the inferior seeds floating on the surface of the brine in the salt selection bin 9 are guided out of the salt selection bin 9 along the inferior seed recovery plate 93 under the action of gravity. When passing through the first conveying pipe, most of the brine is separated from the first conveying pipe and flows into the outer pipe 35-b. The outer pipe 35-b recovers the separated brine into the preparation bin 13. The inferior seeds slide along the smooth pipe wall of the first conveying pipe into the inferior seed collection bin 10. In this way, the separation of inferior seeds and superior seeds can be realized, and the mixing of inferior seeds and superior seeds can be prevented, as Figure 1 shown.

[0068] It should be noted that the first transfer pipe, the second transfer pipe, the third transfer pipe, and the fourth transfer pipe in this device are all conveying pipes 35-a. A number of small meshes that are evenly distributed on the smooth pipe wall of the conveying pipe 35-a and through which seeds cannot pass are used to separate seeds from the salt water and convey them to the designated device; an outer pipe 35-b is sleeved outside the conveying pipe 35-a, and the pipe wall of the outer pipe 35-b is sealed. By connecting with the preparation bin 13 or the water storage tank 14, the salt water separated by the conveying pipe 35-a can be recycled and reused; two support rings 35-d are installed on the outer wall of the conveying pipe 35-a, and a number of support pieces 35-c are fixed on the support rings 35-d. The other ends of the support pieces 35-c are connected to the inner wall of the outer pipe 35-b, so that the outer pipe 35-b can be stably supported, as Figure 15 and 16 shown.

[0069] The primary cleaning bin 11 is a cuboid hollow structure, which is arranged on the load-bearing plate 2 through the mounting frame 33-a, on the right side of the salt selection bin 9, and its height is lower than that of the salt selection bin 9; the bottom is inclined, with the left side of the bottom being the highest end (i.e., the first side) and the right side of the bottom being the lowest end (i.e., the second side); a vertically placed first spiral stirrer 111 is provided at the top of the primary cleaning bin 11, which is used to stir the clear water in the bin and conduct a primary cleaning on the high-quality seeds selected by salt, as Figure 10 shown.

[0070] At the position on the left side wall of the primary cleaning bin 11 and close to the bottom of the salt selection bin 9, a sixth opening 113 is provided, which is used to connect with the first water outlet 95 of the salt selection bin 9 through the second transfer pipe, so that the high-quality seeds sinking to the bottom in the salt selection bin 9 are conveyed into the primary cleaning bin 11. When the first baffle 96 of the salt selection bin 9 is opened, the salt water in the salt selection bin 9 carries the high-quality seeds and is guided out of the salt selection bin 9 under the action of gravity. When passing through the second transfer pipe, most of the salt water is separated from the second transfer pipe and flows into the outer pipe 35-b. The outer pipe 35-b recycles the separated salt water to the preparation bin 13, and the high-quality seeds slide along the smooth pipe wall of the second transfer pipe into the primary cleaning bin 11.

[0071] A second water inlet 112 is provided on the right side wall of the primary cleaning bin 11. The position of the second water inlet 112 is close to the top of the primary cleaning bin 11 and is used to convey clear water into the primary cleaning bin 11; a second water outlet 114 is provided on the right side wall of the primary cleaning bin 11 and close to its bottom. The second water outlet 114 enables the primary cleaning bin 11 to communicate with the secondary cleaning bin 12; a second baffle 115 is provided at the second water outlet 114. The second baffle 115 is slidably installed on the right side wall of the primary cleaning bin 11 to facilitate controlling the opening and closing of the second water outlet 114, as Figure 10 shown.

[0072] The secondary cleaning bin 12 is a cuboid hollow structure, which is arranged on the load-bearing plate 2 through the mounting frame 33-a, on the right side of the primary cleaning bin 11, and its height is lower than that of the primary cleaning bin 11; the bottom is inclined, the right side of the bottom is the highest end (i.e., the first side), and the left side of the bottom is the lowest end (i.e., the second side); a vertically placed second screw agitator 121 is provided at the top of the secondary cleaning bin 12 for agitating the clear water in the bin to perform secondary cleaning on the selected high-quality seeds, as Figure 11 shown.

[0073] At a position on the left side wall of the secondary cleaning bin 12 and close to the bottom of the primary cleaning bin 11, a seventh opening 123 is provided for connecting to the second water outlet 114 of the primary cleaning bin 11 through the third conveying pipe, so that the high-quality seeds after the first cleaning in the primary cleaning bin 11 are conveyed into the secondary cleaning bin 12. When the second baffle 115 of the primary cleaning bin 11 is opened, the salt water in the primary cleaning bin 11 carries the high-quality seeds and is guided out of the primary cleaning bin 11 under the action of gravity. When passing through the third conveying pipe, most of the salt water is separated from the third conveying pipe and flows into the outer pipe 35-b, and the outer pipe 35-b recovers the separated salt water to the water storage tank 14, and the high-quality seeds slide along the smooth pipe wall of the third conveying pipe into the secondary cleaning bin 12.

[0074] It should be noted that clear water is filled in the primary cleaning bin 11. After the high-quality seeds are conveyed into the primary cleaning bin 11, the first screw agitator 111 agitates the clear water in the bin, thereby driving the high-quality seeds to rotate at a high speed. The salt attached to the surface of the high-quality seeds is separated from the surface of the high-quality seeds and dissolved in the clear water under the action of centrifugal force. At this time, the clear water in the bin becomes salt water due to the dissolution of salt. Therefore, the salt water carrying the high-quality seeds is guided out of the primary cleaning bin 11 and passes through the third conveying pipe; the same is true for the secondary cleaning bin 12, and the salt water carrying the high-quality seeds is also guided out of the secondary cleaning bin 12 and passes through the fourth conveying pipe.

[0075] At a position on the left side wall of the secondary cleaning bin 12 and close to its bottom, a third water outlet 124 is provided. The third water outlet 124 enables the secondary cleaning bin 12 to communicate with the drying device 18; a third baffle 125 is provided at the third water outlet 124. The third baffle 125 is slidably installed on the left side wall of the secondary cleaning bin 12 to facilitate controlling the opening and closing of the third water outlet 124; a third water inlet 122 is provided on the right side wall of the secondary cleaning bin 12. The third water inlet 122 is close to the top of the secondary cleaning bin 12 for conveying clear water into the secondary cleaning bin 12, as Figure 11 shown.

[0076] The preparation bin 13 is a cuboid hollow structure, which is fixedly installed on the load-bearing plate 2 and is located below the salt selection bin 9; a vertically placed third screw agitator 131 is provided at the top of the preparation bin 13 for agitating the salt water in the bin to accelerate the mixing of the salt water, as Figure 12 shown.

[0077] On the left side wall of the preparation bin 13, a fourth water inlet 132 and a fifth water inlet 133 are respectively opened. The position of the fourth water inlet 132 is close to the top of the preparation bin 13. The fourth water inlet 132 is connected to the water storage tank 14 through the second water pump 16, so that the second water pump 16 supplies the water in the water storage tank 14 into the preparation bin 13. The fifth water inlet 133 is located below the fourth water inlet 132. The fifth water inlet 133 is connected to the outer pipe 35-b of the first conveying pipe and the second conveying pipe of the salt selection bin 9, so that the brine in the salt selection bin 9 can be recycled and reused.

[0078] At a position on the right side wall of the preparation bin 13 and close to its top, an eighth opening 134 is opened for communicating the salt storage bin 135 with the preparation bin 13, which is convenient for adding salt during the brine preparation process. A fourth baffle 136 is provided at the eighth opening 134. The fourth baffle 136 is slidably installed on the right side wall of the preparation bin 13 to facilitate controlling the opening and closing of the eighth opening 134.

[0079] The salt storage bin 135 is fixedly installed on the outer right side wall of the preparation bin 13 for pre-placing the salt required for preparation. The upper half of the salt storage bin 135 is a cuboid hollow structure, whose length is the same as the length of the side wall of the preparation bin 13, and a salt inlet is opened at the top, so that the salt storage bin 135 can store enough salt. The lower half of the salt storage bin 135 is a quadrangular pyramid funnel structure, whose top is seamlessly connected to the upper half of the salt storage bin 135, and a salt outlet is opened at its bottom, and the salt outlet is communicated with the eighth opening 134 of the preparation bin 13, so that the salt in the salt storage bin 135 can be guided into the preparation bin 13 under the action of gravity, as Figure 13 shown.

[0080] At a position on the right side wall of the preparation bin 13 and close to its bottom, a fourth water outlet 137 is opened. The fourth water outlet 137 is connected to the first water inlet 91 of the salt selection bin 9 through the third water pump 17, so that the third water pump 17 transports the prepared brine in the preparation bin 13 to the salt selection bin 9.

[0081] The water storage tank 14 is arranged on the upper surface of the base 1 and is located between the two support plates 20. The water inlets of the water storage tank 14 are respectively connected to the primary cleaning bin 11, the secondary cleaning bin 12 and the first water pump 15, and are used for storing the brine recovered from the primary cleaning bin 11 and the secondary cleaning bin 12, and can also store the clear water transported by the first water pump 15 from the water source. The first water pump 15 is arranged on the upper surface of the base 1 and is located on the right side of the water storage tank 14. The water outlet of the water storage tank 14 is connected to the fourth water inlet 132 of the preparation bin 13 through the second water pump 16, and the water can be transported into the preparation bin 13 through the second water pump 16, as Figure 1 shown.

[0082] It should be noted that the brine recovered from the primary cleaning tank 11 and the secondary cleaning tank 12 can be supplied to the preparation tank 13 for subsequent brine preparation after recovery, avoiding the waste of water resources and salt. However, during the process of cleaning the elite seeds, a part of the water will be carried away by the seeds, resulting in inevitable water loss during brine recovery. Therefore, when the brine recovered in the water storage tank 14 fails to reach the predetermined water level, the first water pump 15 will inject clean water into the water storage tank 14 again until the predetermined water level is reached.

[0083] The first water pump 15 is arranged on the upper surface of the base 1. One end of the water pumping port is connected to the water source, and one end of the water drainage port is respectively connected to the water storage tank 14, the primary cleaning tank 11 and the secondary cleaning tank 12 through electromagnetic valves. The electromagnetic valves can control the corresponding valve ports according to the actual situation and deliver clean water to the water storage tank 14, the primary cleaning tank 11 and the secondary cleaning tank 12 respectively.

[0084] The second water pump 16 is arranged on the upper surface of the base 1. One end of the water pumping port is connected to the water outlet of the water storage tank 14, and one end of the water drainage port is connected to the fourth water inlet 132 of the preparation tank 13, and is used for delivering the water for preparation into the preparation tank 13.

[0085] The third water pump 17 is arranged on the load-bearing plate 2, below the salt selection tank 9. One end of the water pumping port is connected to the fourth water outlet 137 of the preparation tank 13, and one end of the water drainage port is connected to the first water inlet 91 of the salt selection tank 9, and is used for delivering the prepared brine in the preparation tank 13 into the salt selection tank 9.

[0086] The detection mechanism includes a first liquid level sensor module, a second liquid level sensor module, a third liquid level sensor module, a fourth liquid level sensor module and a salinity sensor module; the first liquid level sensor module is arranged on the right side wall in the preparation tank 13 and below the eighth opening 134, and is used for monitoring whether the water level in the preparation tank 13 reaches the predetermined water level; the second liquid level sensor module is arranged on the inner side wall of the water storage tank 14 and is used for monitoring whether the water level in the water storage tank 14 reaches the predetermined water level; the third liquid level sensor module is arranged on the right side wall in the primary cleaning tank 11 and below the second water inlet 112, and is used for monitoring whether the water level in the primary cleaning tank 11 reaches the predetermined water level; the fourth liquid level sensor module is arranged on the right side wall in the secondary cleaning tank 12 and below the third water inlet 122, and is used for monitoring whether the water level in the secondary cleaning tank 12 reaches the predetermined water level; the salinity sensor module is arranged on the right side wall in the preparation tank 13 and below the first liquid level sensor module, and is used for detecting whether the concentration of the brine prepared in the preparation tank 13 reaches the preset value.

[0087] The drying device 18 is disposed between the load plate 2 and the base 1 by passing through the through holes on the two support plates 20; the drying device 18 is a cylindrical tubular structure, with an outer cover 181 on the outside. The inner cavity of the outer cover 181 is hollow, and a spiral stirring rod 182 is provided in its inner cavity. A heater 183 is installed above the spiral stirring rod 182, so that the high-quality seeds can be fully dried, as Figure 14 shown.

[0088] A motor 184 is installed at the right end of the outer cover 181. The output end of the motor 184 is connected to the spiral stirring rod 182 to drive the spiral stirring rod 182 to rotate; a blower 185 is installed at the left end of the outer cover 181 to send air into the inner cavity of the outer cover 181; a ventilation hood 186 is provided above the outer cover 181, and by cooperating with the blower 185, the air circulation between the inner cavity of the outer cover 181 and the outside world is realized, as Figure 14 shown.

[0089] At a position above the outer cover 181 and to the left of the motor 184, a ninth opening 187 is also provided; at a position below the outer cover 181 and to the right of the blower 185, a discharge port 188 is provided for discharging the dried high-quality seeds in the outer cover 181; the ninth opening 187 is connected to the third water outlet 124 of the secondary cleaning bin 12 through a fourth conveying pipe, facilitating the conveyance of the high-quality seeds in the secondary cleaning bin 12 into the drying device 18; the fourth conveying pipe passes through the load plate 2 to connect the drying device 18 and the third water outlet 124; when the third baffle 125 of the secondary cleaning bin 12 is opened, the brine in the secondary cleaning bin 12 carries the high-quality seeds and is guided out of the secondary cleaning bin 12 under the action of gravity. When passing through the fourth conveying pipe, most of the brine is separated from the fourth conveying pipe and flows into the outer pipe 35-b. The outer pipe 35-b recovers the separated brine to the water storage tank 14, and the high-quality seeds slide along the smooth pipe wall of the fourth conveying pipe into the drying device 18.

[0090] The control part includes a PLC controller, a control structure and a feedback mechanism; the PLC controller is disposed on the support plate 20 to realize the automatic control of each module and switch; the control mechanism is electrically connected to the PLC controller. The control mechanism includes a start switch, a pause switch, a draft fan control module, an electromagnet device control module, a cylinder control module, a water pump control module, a solenoid valve control module, a baffle control module, a spiral stirrer control module, a defective seed recovery plate control module, a heater control module, a motor control module, a blower control module; the feedback mechanism is electrically connected to the PLC controller, and the feedback mechanism includes a color-changing light-emitting diode.

[0091] The start switch and the pause switch are both set on the support plate 20, above the PLC controller, which is convenient for the operator to electrically control the device. The start switch is used to control the startup of the device, and the pause switch is used to control the suspension of the device operation; the induced draft fan control module is used to control the operation of the induced draft fan 4, the cylinder control module controls the operation of the first cylinder 22 and the second cylinder 23 respectively, the electromagnet device control module is used to control the energization of the electromagnet device 25, the water pump control module controls the operation of the first water pump 15, the second water pump 16 and the third water pump 17 respectively, the baffle control module is used to control the movement of each baffle of the device, the screw agitator control module controls the operation of the first screw agitator 111, the second screw agitator 121 and the third screw agitator 131 respectively, the inferior seed recovery plate control module is used to control the operation of the inferior seed recovery plate 93, the solenoid valve control module is used to control the operation of the solenoid valve, the heater control module is used to control the operation of the heater 183, and the motor control module is used to control the operation of the motor 184; the color-changeable light-emitting diode is set on the support plate 20, between the PLC controller and the start switch and the pause switch.

[0092] The working principle and usage method of the present utility model:

[0093] The first step, presetting:

[0094] Pre-fill the salt into the salt storage bin 135 in advance so that there is sufficient salt in the preparation bin 13 for preparing brine.

[0095] Pre-calibrate the calculation formula for the opening and closing time of the fourth baffle 136, which is convenient for calculating the opening and closing time of the fourth baffle 136 based on the actually measured salinity, so as to control the salinity in the preparation bin 13 to reach the specified salinity.

[0096] Pre-set the time required for brine seed selection in advance, which is convenient for separately performing subsequent processing on the separated inferior seeds and superior seeds in time after the brine seed selection is completed.

[0097] Press the start switch, and the device starts the pre-debugging work before cleaning and selection.

[0098] The second step, pre-debugging:

[0099] The PLC controller outputs signals to the color-changeable light-emitting diode, the solenoid valve control module, the water pump control module and the heater control module.

[0100] The color-changeable light-emitting diode shows red, indicating that the device is in the debugging process; the solenoid valve opens all valve ports, the first water pump 15 starts, and clear water is simultaneously injected into the water storage tank 14, the primary cleaning bin 11 and the secondary cleaning bin 12 through the solenoid valve ports; the heater 183 starts to heat the screw stirring rod 182.

[0101] When the clear water in the water storage tank 14, the primary cleaning chamber 11 and the secondary cleaning chamber 12 reaches the preset water level, the PLC controller outputs signals to the solenoid valve control module and the water pump control module according to the feedback information of the second, third, and fourth liquid level sensor modules.

[0102] The solenoid valve closes all valve ports, the first water pump 15 stops running, the second water pump 16 starts, and pumps the clear water in the water storage tank 14 into the preparation chamber 13 until the clear water in the preparation chamber 13 reaches the preset water level. Then, the PLC controller outputs a signal to the water pump control module again according to the feedback information of the first liquid level sensor module, causing the second water pump 16 to stop running.

[0103] It should be noted that after the PLC controller executes the above commands for the first time, at regular intervals, it will respectively read the water level information fed back by the first, second, third, and fourth liquid level sensor modules and compare it with the preset water level information. If the water level in any of the preparation chamber 13, water storage tank 14, primary cleaning chamber 11, or secondary cleaning chamber 12 is lower than the preset water level, the PLC controller outputs signals to the solenoid valve control module and the water pump control module for corresponding processing to ensure the normal operation of each chamber and improve work efficiency.

[0104] The PLC controller determines whether the salinity of the water in the preparation chamber 13 reaches the specified salinity according to the feedback information of the salinity sensor module. If the salinity of the water in the preparation chamber 13 does not reach the specified salinity, the PLC controller outputs a signal to the data processing module. The data processing module calculates the opening and closing time of the fourth baffle 136 according to the salinity information fed back by the salinity sensor module and the pre-calibrated opening and closing time calculation formula of the fourth baffle 136.

[0105] The PLC controller outputs signals to the baffle control module and the screw agitator control module according to the calculated opening and closing time of the fourth baffle 136. The baffle control module controls the opening time of the fourth baffle 136 according to the opening and closing time of the fourth baffle 136, so that salt can fall from the salt storage bin 135 into the preparation chamber 13 during the opening period of the fourth baffle 136. The third screw agitator 131 starts to accelerate the mixing of the salt water.

[0106] It should be noted that after the PLC controller executes the above commands for the first time, at regular intervals, it will read the salinity information fed back by the salinity sensor module and compare it with the preset specified salinity. If the detected salinity does not reach the specified salinity, the PLC controller will perform cyclic processing according to the above logic until the detected salinity reaches the specified salinity to ensure the salinity of the salt water and increase the accuracy of salt water seed selection.

[0107] If the salinity of the water in the preparation bin 13 reaches the specified salinity, the PLC controller outputs signals to the spiral agitator control module, the water pump control module, and the color-changing light-emitting diode, and delays the output of signals to the induced draft fan module, the electromagnet device control module, and the cylinder control module.

[0108] The third spiral agitator 131 stops operating; the second water pump 16 starts, pumps the prepared brine in the preparation bin 13 into the salt selection bin 9. After all the brine in the preparation bin 13 is transported to the salt selection bin 9, the PLC controller, according to the feedback information of the first liquid level sensor module, outputs a signal to the water pump control module again, causing the second water pump 16 to stop operating; the color-changing light-emitting diode displays green, indicating that the device debugging is completed and the seeds to be cleaned can be put in.

[0109] The induced draft fan 4 starts with a delay, extracts air from the first chamber 31 through the ventilation duct 34-a, and can screen out the light impurities mixed in the seeds to be cleaned; the electromagnet device 25 starts to be energized, and can respectively attract the magnetic blocks 26 on the first sieve plate 312 and the second sieve plate 321; the first cylinder 22 and the second cylinder 23 start simultaneously, and drive the first and second sieve plates 321 to perform horizontal reciprocating motion along the second slide rail 29 through the electromagnet device 25, and can screen out the heavy impurities mixed in the seeds to be cleaned.

[0110] The third step, seed cleaning:

[0111] After the color-changing light-emitting diode turns green, the operator can put the seeds to be cleaned into the feed port 311 of the first chamber, or start the conveyor belt added at the feed port 311 of the first chamber to put the seeds to be cleaned into the feed port 311 of the first chamber.

[0112] After the seeds are put in, the screening device can screen out the light impurities and heavy impurities mixed in the seeds. After three rounds of screening, the seeds will fall onto the sealing plate 331 and the drainage plate 332 in the third chamber 33. Only when a sufficient number of seeds pass through the three rounds of screening and fall into the third chamber 33, can the drainage plate 332 flip downward under the pressure of the seeds, so that the seeds can fall into the brine tank through the discharge hopper 333 for brine seed selection.

[0113] It should be noted that when the first sieve plate 312 or the second sieve plate 321 operates for a long time, the heavy impurities screened out will always stay on the sieve mesh, and the subsequent seeds cannot pass through the sieve mesh due to the blockage of the heavy impurities, thus affecting the accuracy and working efficiency of the subsequent seed screening. At this time, the operator can press the pause switch to stop the operation of the device, and open the movable baffle 27 on the side wall of the cylinder 3 through the handle 28 to take out the sieve plate for cleaning or replacement.

[0114] The PLC controller outputs signals to the inferior seed recovery board control module according to the preset time required for saline seed selection, and delays the output of signals to the baffle control module.

[0115] The inferior seed recovery board 93 is activated, flips and extends into the salt selection bin 9 from the left side wall of the bin until it fits against the right side wall of the salt selection bin 9, enabling the inferior seeds floating on the surface of the brine to be recovered along the inferior seed recovery board 93 to the inferior seed collection bin 10 under the drive of the brine; the first baffle 96 is activated with a delay to open the first water outlet 95 of the salt selection bin 9, allowing the superior seeds sinking to the bottom to be conveyed along the inclined bottom of the salt selection bin 9 to the primary cleaning bin 11 under the drive of the brine; after the brine in the salt selection bin 9 is drained, the inferior seed recovery board 93 and the first baffle 96 will be reset.

[0116] It should be noted that during the process of the brine in the salt selection bin 9 carrying the seeds to the corresponding bin, under the guidance of gravity, it will be recovered to the preparation bin 13 via the outer pipe 35-b, while the seeds will continue to slide into the corresponding bin along the conveying pipe 35-a to complete the separation of the brine and the seeds; after the brine is recovered to the preparation bin 13, the brine will be prepared again. Until the specified salinity is reached, the PLC controller will output signals to the corresponding module again to pump the prepared brine in the preparation bin 13 into the salt selection bin 9, enabling the salt selection bin 9 to perform a new round of saline seed selection.

[0117] After the salt selection bin 9 opens the first baffle 96 to discharge the superior seeds, the PLC controller outputs signals to the screw agitator control module and delays the output of signals to the baffle control module.

[0118] The first screw agitator 111 in the primary cleaning bin 11 is activated to quickly agitate the clear water in the bin, thereby driving the superior seeds to rotate at a high speed, so that under the action of centrifugal force, the salt attached to the surface of the superior seeds can be washed out; the second baffle 115 is activated with a delay to open the second water outlet 114 of the primary cleaning bin 11, allowing the superior seeds to be conveyed along the inclined bottom of the primary cleaning bin 11 to the secondary cleaning bin 12 under the drive of the brine; after the brine in the primary cleaning bin 11 is drained, the first screw agitator 111 stops operating, and the second baffle 115 will be reset.

[0119] After the primary cleaning bin 11 opens the second baffle 115 to discharge the superior seeds, the PLC controller outputs signals to the screw agitator control module again and delays the output of signals to the baffle control module.

[0120] The second spiral agitator 121 in the secondary cleaning bin 12 is started, which has the same working principle as that of the primary cleaning bin 11. The third baffle 125 in the secondary cleaning bin 12 is started with a time delay to open the third water outlet 124 of the secondary cleaning bin 12, so that the high-quality seeds can be conveyed to the drying device 18 along the inclined bottom of the secondary cleaning bin 12 driven by the brine; after the brine in the secondary cleaning bin 12 is discharged, the first spiral agitator 111 stops running, and the third baffle 125 will be reset. In this way, the seed cleaning is completed.

[0121] Step 4, seed drying:

[0122] After the high-quality seeds are conveyed to the drying device 18, the PLC controller outputs signals to the motor control module and the blower control module.

[0123] The motor 184 is started to drive the spiral stirring rod 182 to rotate. The heater 183 installed above the spiral stirring rod 182 has been preheated in advance, so that the spiral stirring rod 182 can stir and heat the high-quality seeds to accelerate the evaporation of the moisture in the high-quality seeds; the blower 185 is started to ventilate the drying device 18 to accelerate the air circulation between the drying device 18 and the outside; when the drying of the high-quality seeds is completed, the spiral stirring rod 182 will convey the high-quality seeds to the discharge port 188 for discharging.

[0124] A gravity-type seed cleaner provided in an embodiment of the present invention realizes the composite cleaning of seeds and the integration of seed cleaning and treatment, improves the effect of seed cleaning and the working efficiency of seed treatment. Through the settings of the screening device, the seed selection device and the drying device, the seeds are multi-cleared to separate the inferior seeds and the high-quality seeds, and the high-quality seeds are cleaned and dried, realizing the integration of seed cleaning to drying, simplifying the operation process, improving the effect of seed cleaning and the working efficiency, facilitating the storage of high-quality seeds while ensuring the germination rate of high-quality seeds, and thus increasing the crop yield; through the settings of the electromagnet device and the movable baffle, the disassembly, cleaning and replacement of the sieve plate are realized, ensuring the accuracy of seed cleaning; through the setting of the inferior seed recovery plate, the recovery of inferior seeds is realized, reducing the labor cost and improving the working efficiency; through the setting of the conveying pipeline, the separation of inferior seeds, high-quality seeds and brine is realized, improving the reuse rate of brine and avoiding the waste of water resources.

[0125] The above is the case. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A gravity seed cleaning machine, characterized in that: include: A base (1), a load plate (2) and a main body; the load plate (2) is arranged above the base (1) via a support column (19); the main body comprises a screening device, a seed selection device and a drying device (18); the screening device comprises a cylinder (3) and an induced draft fan (4); the top of the cylinder (3) is connected to the induced draft fan (4) via a ventilation duct (34-a); the induced draft fan (4) is arranged on the load plate (2); The seed selection device comprises a salt selection bin (9), an inferior seed collection bin (10), a primary cleaning bin (11), a secondary cleaning bin (12) and a preparation bin (13); the preparation bin (13) is arranged on the load-bearing plate (2), and the preparation bin (13) is connected to a water storage tank (14) via a second water pump (16); the second water pump (16) and the water storage tank (14) are both arranged on the base (1); the preparation bin (13) is connected to the salt selection bin (9) via a third water pump (17); the third water pump (17) is arranged on the load-bearing plate (2); The salt selection bin (9) is located above the preparation bin (13), and the top of the salt selection bin (9) is connected to the bottom of the cylinder (3); the bottom of the salt selection bin (9) is tilted, and the first side of the salt selection bin (9) is connected to the top of the inferior seed collection bin (10) through a first conveying pipeline, and the bottom of the inferior seed collection bin (10) is tilted; the second side of the salt selection bin (9) is connected to the first side of the primary cleaning bin (11) through a second conveying pipeline, and the bottom of the primary cleaning bin (11) is tilted; The second side of the primary cleaning chamber (11) is connected to the first side of the secondary cleaning chamber (12) via a third delivery pipe, and the bottom of the secondary cleaning chamber (12) is arranged at an angle; the second side of the secondary cleaning chamber (12) is connected to the drying device (18) via a fourth delivery pipe, and the drying device (18) is arranged on the base (1).

2. A gravity seed cleaning machine according to claim 1, characterized in that: A sedimentation channel (5) and a sedimentation chamber (6) connected to the sedimentation channel (5) are also provided between the cylinder (3) and the induced draft fan (4); the sedimentation chamber (6) is provided on the load-bearing plate (2); the sedimentation channel (5) is connected to the ventilation duct (34-a); and an arc-shaped baffle (7) is provided on the ventilation duct (34-a); the arc-shaped baffle (7) is located at the connection between the sedimentation channel (5) and the ventilation duct (34-a).

3. A gravity seed cleaner according to claim 1, characterized in that: The cylinder (3) is provided with a screening assembly; the screening assembly comprises two opposing slide rails arranged on the cylinder (3) and a screen plate slidably arranged on the two slide rails; a magnetic block (26) is arranged on one side of the screen plate; two opposing openings are arranged on the cylinder (3), one opening is provided with a cylinder, and the other opening is hinged with a movable baffle (27); the piston rod of the cylinder is provided with an electromagnet device (25), and the electromagnet device (25) corresponds to the magnetic block (26).

4. A gravity seed cleaning machine according to claim 3, characterized in that: A discharge hopper (333) is provided at the bottom of the cylinder (3), and the discharge hopper (333) is connected to the top of the salt selection bin (9); the cylinder (3) is provided with a sealing plate (331) and a guide plate (332) opposite to each other, and the sealing plate (331) and the guide plate (332) are located above the discharge hopper (333) and below the screening assembly.

5. A gravity seed cleaning machine according to claim 1, characterized in that: A low-quality recovery plate (93) is provided on the first side of the salt selection bin (9); the bottom of the low-quality recovery plate (93) is movably connected to the first side of the salt selection bin (9); the top of the low-quality recovery plate (93) is inclined; and a sealing rubber strip (94) is provided on the top of the low-quality recovery plate (93).

6. A gravity seed cleaning machine according to claim 1, characterized in that: The first conveying pipeline, the second conveying pipeline, the third conveying pipeline and the fourth conveying pipeline are all conveying pipes (35-a), and the conveying pipe (35-a) is evenly provided with a plurality of meshes; the conveying pipe (35-a) is sleeved with an outer pipe (35-b), and a support sheet (35-c) for supporting the outer pipe (35-b) is provided between the outer pipe (35-b) and the conveying pipe (35-a).

7. A gravity seed cleaning machine according to claim 6, characterized in that: The outer tube (35-b) of the first delivery pipeline and the outer tube (35-b) of the second delivery pipeline are connected to the preparation bin (13), and the outer tube (35-b) of the third delivery pipeline and the outer tube (35-b) of the fourth delivery pipeline are connected to the water storage tank (14).

8. A gravity seed cleaning machine according to claim 1, characterized in that: The drying device (18) comprises an outer cover (181), a spiral stirring rod (182), a heater (183), a motor (184), a blower (185) and a ventilation hood (186); the spiral stirring rod (182) is arranged in the outer cover (181), and the spiral stirring rod (182) is provided with the heater (183); the motor (184) is arranged on one side of the outer cover (181), and the output end of the motor (184) is connected to the spiral stirring rod (182); the blower (185) is arranged on the other side of the outer cover (181); and the ventilation hood (186) is arranged on the outer cover (181).

9. A gravity seed cleaning machine according to claim 8, characterized in that: The drying device (18) is further provided with a ninth opening (187) and a discharge port (188); the ninth opening (187) is arranged above the outer cover (181) and is located on one side of the motor (184); the ninth opening (187) is connected to the second side of the secondary cleaning chamber (12) through the fourth conveying pipe; the discharge port (188) is arranged below the outer cover (181) and is located on one side of the blower (185).

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