Seed drying machine

Abstract

The utility model relates to a seed drying machine, and belongs to the technical field of agricultural mechanical equipment. An air cavity is formed in the inner top face of the box body, a heating pipe is installed in the air cavity, a fan is installed in the air cavity above the heating pipe, a plurality of drying air channels are arranged on the bottom face of the air cavity at intervals, a lifting assembly is arranged on the inner bottom face of the box body, a material disc is arranged in the box body on one side of the lifting assembly, and the material disc is provided with a material returning pipe and a material discharging pipe through gate valve assemblies. The material returning pipe is connected with the lifting assembly, the discharging pipe extends to the outer side of the box body, discharging openings are formed in the positions, corresponding to the material returning pipe and the discharging pipe, of the inner bottom face of the material disc respectively, and a feeding pipe is arranged on the box body on one side of the material disc. The seed dryer has the function of circularly drying seeds, effectively turns over the seeds, and avoids the problem that the single-side heated surfaces of the seeds are easy to damage.

Description

Technical Field

[0001] This utility model relates to a seed dryer, belonging to the field of agricultural machinery and equipment technology. Background Technology

[0002] After harvesting, seeds have a high moisture content and are not suitable for direct storage. Their moisture content needs to be reduced to a suitable range before they can be safely stored. Currently, when using tray dryers to dry seeds, the heat source and the seed positions within the trays are fixed. Prolonged drying inevitably leads to one side of the seeds remaining at excessively high temperatures for an extended period. This high temperature damages the seed surface and reduces the germination rate. Therefore, improvements are necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a seed dryer with a function of cyclically turning the seeds, thus avoiding the problem of easy damage to the surface of the seeds due to heating on only one side.

[0004] The technical solution of this utility model is:

[0005] A seed dryer includes a housing, a lifting assembly, a material tray, a return pipe, and a discharge pipe. The dryer is characterized by: an air chamber on the top surface of the housing, a heating pipe inside the air chamber, a fan inside the air chamber above the heating pipe, multiple drying air ducts spaced apart on the bottom surface of the air chamber, a lifting assembly on the bottom surface of the housing, a material tray inside the housing on one side of the lifting assembly, a return pipe and a discharge pipe connected to the material tray via a gate valve assembly, the return pipe connected to the lifting assembly, and the discharge pipe extending to the outside of the housing. A discharge port is located on the bottom surface of the material tray at positions corresponding to the return pipe and the discharge pipe, and an inlet pipe is located on one side of the housing.

[0006] The material tray is cylindrical, and a drive motor is fixedly installed on the bottom surface inside the material tray. The drive shaft of the drive motor extends into the material tray, and rotating rods are symmetrically mounted on the drive shaft extending into the material tray. One rotating rod has a lever spaced on its circumference, and the other rotating rod has a lever plate on its circumference.

[0007] A tapered sleeve is fitted onto the drive shaft between the rotating rod and the material tray.

[0008] The lifting assembly includes a lifting cylinder, a lifting wedge, and a winch. The lifting wedge is movably disposed inside the lifting cylinder, and the winch is disposed outside the lifting cylinder. The steel rope of the winch is connected to the lifting wedge through a straight plate and a grooved wheel. The lifting cylinder is connected to the return pipe, and a gate is movably disposed between the lifting cylinder and the return pipe. A reset cylinder is disposed on the lifting cylinder above the gate, and the piston rod of the reset cylinder is connected to the gate.

[0009] The straight plate is fixedly installed on the edge of the lifting cylinder port, and grooved wheels are movably installed at both ends of the straight plate through mounting ear plates.

[0010] The gate valve assembly includes a sealing plate and a connecting block. A feeding channel is provided on the connecting block corresponding to the feeding port. The sealing plate is radially movably installed on the feeding channel. A pushing cylinder is installed on a material tray on one side of the sealing plate. The piston rod of the pushing cylinder is fixedly connected to the sealing plate.

[0011] The beneficial effects of this utility model are as follows:

[0012] This seed dryer guides seeds into a tray via a feed pipe. Hot air is blown from the air chamber through the drying duct into the dryer body via a fan and heating pipe. A lever on one rotating rod disperses the seeds within the tray, while a baffle on another rotating rod pushes them into the corresponding discharge port of the return pipe. The seeds fall into the return pipe through the discharge channel. The piston rod of the reset cylinder retracts, causing the gate to move upwards, connecting the lifting cylinder and the return pipe. Seeds temporarily stored in the return pipe enter the lifting cylinder under their own weight and fall onto the lifting wedge. After a period of time, the piston rod of the push cylinder resets. The gate is reset, the connection between the lifting cylinder and the return pipe is closed, and the return pipe temporarily stores the seeds again. Then, the steel rope of the winch is wound up. At this time, under the pulling action of the steel rope, the lifting wedge rises vertically in the lifting cylinder, and the seeds are simultaneously lifted upward along the lifting cylinder. When the lifting wedge is aligned with the guide plate, the seeds slide into the guide plate under their own gravity along the inclined surface of the lifting wedge and fall into the material tray. The lifting wedge is then reset. The above operation is repeated to circulate the seeds to the material tray, realizing the circulatory drying operation of the seeds. This seed dryer has a circulatory drying function, effectively turning the seeds and avoiding the problem of easy damage to the surface of the seeds that are heated on one side. Attached Figure Description

[0013] Figure 1 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional perspective view of the three-dimensional structure of this utility model.

[0015] Figure 3 for Figure 2 Schematic sectional view along the middle AA direction;

[0016] Figure 4 This is a cross-sectional three-dimensional structural schematic diagram of the present invention from another perspective.

[0017] In the diagram: 1. Box body; 2. Material tray; 3. Return pipe; 4. Discharge pipe; 5. Air chamber; 6. Heating pipe; 7. Fan; 8. Lifting cylinder; 9. Lifting wedge; 10. Winch; 11. Guide plate; 12. Steel rope; 13. Straight plate; 14. Grooved wheel; 15. Gate plate; 16. Reset cylinder; 17. Drive motor; 18. Rotating rod; 19. Pulley; 20. Pulley plate; 21. Conical sleeve; 22. Discharge port; 23. Sealing plate; 24. Connecting block; 25. Pushing cylinder; 26. Feed pipe; 27. Drying air duct Detailed Implementation

[0018] See appendix Figure 1-4

[0019] The seed dryer includes a housing 1, a lifting assembly, a material tray 2, a return pipe 3, and a discharge pipe 4. An air chamber 5 is provided on the top surface of the housing 1. A heating pipe 6 is fixedly installed in the air chamber 5. A fan 7 is fixedly installed in the air chamber 5 above the heating pipe 6. The fan 7 is a commercially available part. Multiple drying air ducts 27 are arranged at intervals on the bottom surface of the air chamber 5. When working, the air generated by the fan 7 is heated by the heating pipe 6 and blown into the housing 1 from the air chamber 5 through the drying air ducts 27.

[0020] The bottom surface of the box 1 is provided with a lifting assembly, which includes a lifting cylinder 8, a lifting wedge 9 and a winch 10. The lifting cylinder 8 is a rectangular cylinder, and a guide plate 11 is inclinedly provided on the outside of the lifting cylinder 8. The guide plate 11 is used to guide the seeds into the material tray 2.

[0021] A lifting wedge 9 is movably installed inside the lifting cylinder 8. The lifting wedge 9 is wedge-shaped. A winch 10 is installed on the outside of the lifting cylinder 8. The winch 10 is existing technology. The steel rope 12 of the winch 10 is connected to the lifting wedge 9 through a straight plate 13 and a grooved wheel 14. The straight plate 13 is fixedly installed on the edge of the port of the lifting cylinder 8. The grooved wheels 14 are movably installed at both ends of the straight plate 13 through mounting ear plates. During operation, the winch 10 can realize the vertical lifting and lowering action of the lifting wedge 9 inside the lifting cylinder 8 through the cooperation of the straight plate 13 and the grooved wheel 14.

[0022] The lifting cylinder 8 is connected to the return pipe 3. A gate 15 is movably installed between the lifting cylinder 8 and the return pipe 3. A reset cylinder 16 is installed on the lifting cylinder 8 above the gate 15. The piston rod of the reset cylinder 16 is connected to the gate 15. During operation, the piston rod of the reset cylinder 16 drives the gate 15 to move up and down, thereby opening or closing the connection between the lifting cylinder 8 and the return pipe 3 through the gate 15.

[0023] A material tray 2 is installed inside the box 1 on one side of the lifting component. The material tray 2 is cylindrical. A drive motor 17 is fixedly installed on the bottom surface of the material tray 2. The drive shaft of the drive motor 17 extends into the material tray 2. Rotating rods 18 are symmetrically fixedly installed on the drive shaft extending into the material tray 2. A lever 19 is fixedly installed at intervals on the circumference of one rotating rod 18, and a lever plate 20 is fixedly installed on the circumference of the other rotating rod 18. When working, the drive shaft of the drive motor 17 drives the rotating rod 18 to rotate. The lever 19 on the circumference of one rotating rod 18 can disperse the seeds so that they are evenly distributed in the material tray 2. The lever plate 20 on the circumference of the other rotating rod 18 can push the seeds into the discharge port 22 of the material tray 2, so that the seeds can be circulated and dried or facilitate the discharge of the seeds.

[0024] A conical sleeve 21 is fitted on the drive shaft between the rotating rod 18 and the material tray 2. The purpose of this arrangement is to guide the seeds smoothly into the discharge port 22 of the material tray 2 through the conical sleeve 21, thereby further reducing the seed residue in the material tray 2.

[0025] The material tray 2 is equipped with a return pipe 3 and a discharge pipe 4 via a gate valve assembly. The bottom surface of the material tray 2 is provided with a discharge port 22 at the position corresponding to the return pipe 3 and the discharge pipe 4. The gate valve assembly includes a sealing plate 23 and a connecting block 24. The connecting block 24 is provided with a discharge channel corresponding to the discharge port 22. The discharge channel of each connecting block 24 is connected to its corresponding return pipe 3 and discharge pipe 4. The sealing plate 23 is radially movably installed on the discharge channel. A push cylinder 25 is installed on the material tray 2 on one side of the sealing plate 23. The piston rod of the push cylinder 25 is fixedly connected to the sealing plate 23. During operation, the piston rod of the push cylinder 25 extends or retracts, thereby controlling the sealing plate 23 to move forward or backward on the discharge channel of the connecting block 24, thereby controlling the opening or closing of the discharge channel of the connecting block 24.

[0026] The return pipe 3 is connected to the lifting assembly, and the discharge pipe 4 extends to the outside of the box 1. The purpose of this arrangement is to facilitate the guidance of seeds to the outside of the box 1 through the discharge pipe 4, so as to facilitate seed collection.

[0027] A feed pipe 26 is provided on the box 1 on one side of the feed tray 2, which facilitates the introduction of seeds into the feed tray 2 inside the box 1.

[0028] When using this seed dryer, first put an appropriate amount of seeds to be dried into the feed pipe 26. The seeds entering the feed pipe 26 will fall into the material tray 2 under their own gravity. Then start the fan 7. The air generated by the fan 7 is heated by the heating pipe 6 and blown into the box 1 from the air chamber 5 through the drying air duct 27 for drying.

[0029] When the drive motor 17 is started, the transmission shaft of the drive motor 17 drives the rotating rod 18 to rotate. The lever 19 on the circumference of one of the rotating rods 18 can disperse the seeds and make them spread out in the material tray 2. At the same time, the piston rod of the push cylinder 25 in the gate valve assembly corresponding to the return pipe 3 is retracted. At this time, the sealing plate 23 retracts synchronously, and the feeding channel corresponding to the return pipe 3 is opened. Meanwhile, the lever 20 on the circumference of the other rotating rod 18 pushes the seeds into the feeding port 22 corresponding to the return pipe 3. The seeds fall from the feeding port 22 through the feeding channel into the return pipe 3 and are temporarily stored in the return pipe 3.

[0030] At this time, the piston rod of the control reset cylinder 16 retracts, the gate 15 moves upward, and the connection between the lifting cylinder 8 and the return pipe 3 is in a connected state. The seeds temporarily stored in the return pipe 3 enter the lifting cylinder 8 under its own gravity and fall onto the lifting wedge block 9. After the seeds have fallen for a period of time, the piston rod of the push cylinder 25 resets, so that the gate 15 resets, the connection between the lifting cylinder 8 and the return pipe 3 is closed, and the return pipe 3 temporarily stores the seeds again.

[0031] Then, the steel rope 12 of the winch 10 is wound up. At this time, under the pulling action of the steel rope 12, the lifting wedge 9 rises vertically in the lifting cylinder 8, and the seeds are simultaneously lifted upward along the lifting cylinder 8. When the lifting wedge 9 is aligned with the guide plate 11, the seeds slide into the guide plate 11 along the inclined surface of the lifting wedge 9 under their own gravity, and then fall into the material tray 2 along the guide plate 11. The lifting wedge 9 is then reset. The above operation is repeated to make the seeds circulate and transported to the material tray 2, so as to realize the circulatory drying operation of the seeds.

[0032] After the seeds have finished circulating and drying, the sealing plate 23 corresponding to the return pipe 3 is reset, and the piston rod of the push cylinder 25 retracts the sealing plate 23 corresponding to the discharge pipe 4, opening the discharge channel corresponding to the discharge pipe 4. This allows the seeds to be discharged from the discharge port 22 of the tray 2 through the discharge pipe 4 to the outside of the housing 1, thus completing the seed collection. This seed dryer has a circulating seed drying function, effectively turning the seeds and avoiding the problem of easy damage to the surface of the seeds that are heated on only one side.

Claims

1. A seed dryer comprising a housing (1), an elevator assembly, a tray (2), a return duct (3) and a discharge duct (4), characterised in that: The box (1) is provided with a wind cavity (5) on the top surface, the wind cavity (5) is provided with a heating pipe (6), the wind cavity (5) is provided with a fan (7) above the heating pipe (6), the wind cavity (5) is provided with a plurality of drying air ducts (27) at intervals on the bottom surface, the box (1) is provided with a lifting assembly on the bottom surface, the box (1) is provided with a material tray (2) on one side of the lifting assembly, the material tray (2) is provided with a return pipe (3) and a discharge pipe (4) through a gate valve assembly, the return pipe (3) is connected with the lifting assembly, the discharge pipe (4) extends to the outside of the box (1), the material tray (2) is provided with a discharge port (22) on the bottom surface corresponding to the return pipe (3) and the discharge pipe (4), and the box (1) is provided with a feeding pipe (26) on one side of the material tray (2).

2. A seed dryer as claimed in claim 1, characterised in that: The material tray (2) is a cylindrical shape, a driving motor (17) is fixedly installed on the bottom surface of the material tray (2), a transmission shaft of the driving motor (17) extends into the material tray (2), and symmetrical rotating rods (18) are arranged on the transmission shaft extending into the material tray (2), one of the rotating rods (18) is provided with a push rod (19) at intervals on the circumference, and the other rotating rod (18) is provided with a push plate (20) on the circumference.

3. A seed dryer as claimed in claim 2, wherein: A taper sleeve (21) is sleeved on the transmission shaft between the rotating rod (18) and the material tray (2).

4. A seed dryer as claimed in claim 1, wherein: The lifting assembly comprises a lifting cylinder (8), a lifting wedge (9) and a winch (10), the lifting wedge (9) is movably arranged in the lifting cylinder (8), the winch (10) is arranged on the outside of the lifting cylinder (8), a steel wire rope (12) of the winch (10) is connected with the lifting wedge (9) through a straight plate (13) and a groove wheel (14), the lifting cylinder (8) is communicated with the return pipe (3), a gate plate (15) is movably arranged between the lifting cylinder (8) and the return pipe (3), a reset air cylinder (16) is arranged on the lifting cylinder (8) above the gate plate (15), and a piston rod of the reset air cylinder (16) is connected with the gate plate (15).

5. A seed dryer as claimed in claim 4, wherein: The straight plate (13) is fixedly installed on the edge of the port of the lifting cylinder (8), and the straight plate (13) is movably provided with the groove wheel (14) through the mounting lug on both ends.

6. A seed dryer as claimed in claim 1, characterized in that: The gate valve assembly comprises a closing plate (23) and a connecting block (24), the connecting block (24) is provided with a discharging channel corresponding to the discharge port (22), the closing plate (23) is movably installed on the discharging channel in the radial direction, the material tray (2) is provided with a push air cylinder (25) on one side of the closing plate (23), and a piston rod of the push air cylinder (25) is fixedly connected with the closing plate (23).

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