Automatic rape seed coating equipment and method thereof

Abstract

The invention discloses an automatic rape seed coating device and method, and relates to the technical field of seed treatment.The automatic rape seed coating device comprises a supporting frame and further comprises a discharging unit, a rolling unit, a driving unit, a batching unit and a pesticide spraying unit which are installed on the supporting frame; the batching unit is used for preparing medicaments; the material rolling unit comprises a roller provided with a plurality of spiral holes, an adjusting module and a gas injection module, the gas injection module is used for injecting gas into the adjusting module, a plurality of discharging holes are formed in the roller, and spiral blades are fixedly installed on the inner wall of the roller. The spiral type seed coating machine has the advantages that the lifting height can be automatically changed according to the volume and the particle size of seeds, it is ensured that the seeds are turned over thoroughly in the roller, pesticide is more evenly distributed on the seeds, the coating quality is effectively improved, meanwhile, coating is conducted in a spiral propelling mode, continuous coating can be conducted, and the coating efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seed processing, and in particular to an automatic rapeseed seed coating device and a method thereof. Background Art

[0002] Rapeseed is an important oil crop and economic crop in my country. It has a wide planting area and high yield, and occupies an important position in agricultural production. Seed coating technology is a key link in improving the quality of rapeseed seeds, ensuring the germination rate, and enhancing stress resistance. By wrapping a layer of coating film composed of fungicides, insecticides, fertilizers, growth regulators, etc. on the surface of the seeds, it can effectively prevent and control seedling diseases and pests, promote seed germination and seedling growth.

[0003] The existing general-purpose automated seed coating equipment has relatively simple functions and low coating adaptability. Therefore, the publication number CN110809941B discloses a seed coating equipment, which includes a seed box assembly, a transport assembly, a closing assembly, a coating assembly, and a base frame assembly. The bevel gear four is driven to rotate by the bevel gear two. When the bevel gear four rotates, the bevel gear three and the bevel gear six simultaneously drive the bevel gear five and the bevel gear seven to rotate, thereby making the bevel gear shaft three drive the belt four to move, and at the same time drive the bevel gear shaft two to move through the bevel gear seven, and drive the belt three to move, thereby respectively driving the middle-end rotating sleeve and the inner-end rotating rod one to rotate, thereby realizing the differential speed of rotation between the middle-end rotating sleeve and the inner-end rotating rod one, and the differential speed of rotation between the middle-end rotating sleeve and the inner-end rotating rod one.

[0004] The above-mentioned seed coating equipment can adjust the seed flow rate according to actual conditions; it can automatically adjust the state of seed transportation to facilitate increasing the processing speed; through the differential principle, the seeds are fully contacted with the coating agent and the coating process is completed.

[0005] However, when the above-mentioned seed coating equipment and the existing drum coating equipment are used, the rotation of the drum is used to drive the seeds to tumble in the drum, and the pesticides are sprayed for coating, which cannot be coated continuously and has low coating efficiency. During the coating process, due to the small particle size of rapeseed seeds, the friction between them and the drum is small, and the adaptability is poor, resulting in poor tumbling effect of the rapeseed seeds and uneven adhesion of the pesticide, which affects the coating quality.

[0006] Therefore, a novel rapeseed seed automated coating device and method thereof can be used to solve the deficiencies of the prior art. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems of low coating efficiency and poor coating quality caused by incomplete tumbling in the prior art, and to propose an automated rapeseed seed coating equipment and method.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An automated rapeseed seed coating device comprises a support frame, and further comprises a feeding unit, a rolling unit, a driving unit, a batching unit and a spraying unit installed on the support frame;

[0010] The batching unit is used to prepare medicine;

[0011] The rolling unit includes a drum with multiple spiral holes, an adjustment module and an air injection module. The air injection module is used to inject air into the adjustment module. The drum is provided with multiple discharge holes. Spiral blades are fixedly installed on the inner wall of the drum. The seeds are placed inside the drum and the drum is driven to rotate by the driving unit. The seeds are tumbled under the action of the spiral blades. The adjustment module is used to adjust the friction between the seeds and the drum, change the height of the seeds climbing in the drum, deblock the adhered seeds, and blow air to the surface of the seeds to make the distribution of the medicine more uniform.

[0012] The feeding unit is used to pour seeds into the drum; the spraying unit cooperates with the batching unit to evenly spray the medicine configured by the batching unit onto the seeds inside the drum.

[0013] Preferably, the unloading unit includes a unloading hopper fixedly mounted on the top of the support frame, a discharge baffle is rotatably mounted on the bottom of the unloading hopper, an electric push rod is rotatably mounted on the unloading hopper, and the telescopic end of the electric push rod is rotatably connected to the discharge baffle.

[0014] Preferably, the adjustment module includes a plurality of elastic components matched with corresponding spiral holes, each of the elastic components is pressed tightly against the roller by two adjacent spiral metal pressure plates, and each metal pressure plate is fixed to the roller by a pad and a bolt.

[0015] Preferably, the elastic component is composed of two rubber pressure plates, two hard rubber plates, two soft rubber strips and a rubber strip, the rubber strip is used to connect the bottoms of the two hard rubber plates, the two rubber pressure plates are connected to the corresponding hard rubber plates through the soft rubber strip, a plurality of fixed plates are fixedly mounted on the metal pressure plate, each of the fixed plates is fixedly mounted with an anti-pillar that cooperates with the corresponding rubber strip, a plurality of blowing structures are fixedly mounted on each of the hard rubber plates, and a plurality of air outlet holes that cooperate with the corresponding blowing structures are provided on the hard rubber plate.

[0016] Preferably, the blowing structure includes a rubber block fixedly adhered to the hard rubber plate, an air blocking block is fixedly installed on the rubber block, a plurality of inclined circular holes are provided on the air blocking block and the rubber block, a sealing plug is slidably installed in each circular hole on the air blocking block, a plurality of air guide holes are provided on each sealing plug, a rubber ring matching the sealing plug is fixedly installed in each circular hole on the rubber block, and the rubber ring blocks the multiple air guide holes on the sealing plug.

[0017] Preferably, the gas injection module includes a gas injection hood fixedly mounted on the outside of the drum, an air guide ring connected to the gas injection hood is rotatably mounted on the gas injection hood, an air guide pipe is fixedly connected to the air guide ring, the air guide pipe is connected to an external air pump, and an airflow electric control valve is installed between the air pump and the air guide pipe.

[0018] Preferably, the driving unit includes a driving motor fixedly mounted on a supporting frame, a driving end of the driving motor is connected to a reducer, and a driving end of the reducer is fixedly connected to the drum.

[0019] Preferably, the spraying unit includes a control valve fixedly mounted on a support frame, a metal pipe fixedly mounted on the control valve, the metal pipe extending into the interior of the drum, and a plurality of spray heads fixedly mounted on the metal pipe.

[0020] Preferably, the metal pressure plate is made of an aluminum alloy material with elastic properties, and the distance between two adjacent bolts and pads is less than or equal to five centimeters.

[0021] The present invention also provides an automated rapeseed seed coating method, comprising the automated rapeseed seed coating device described above, and further comprising the following steps:

[0022] S1. First, the rapeseed seeds are cleaned to ensure that the surface of the rapeseed seeds is clean, and the batching unit is used to prepare the medicine;

[0023] Then put the clean rapeseed seeds into the feeding unit, and the feeding unit will send the seeds into the drum;

[0024] S2. Then, the driving unit is started to drive the drum to rotate. The rotation of the drum drives the spiral blade to rotate, thereby driving the seeds to move along the spiral blade. During the movement, the air injection module injects air to continuously coat a large amount of seeds, which changes the contact area between the adjustment module and the seeds, thereby increasing the friction force, and turning the seeds at the bottom to the upper part. The friction force between the seeds and the adjustment module is controlled according to the amount of seeds, so as to carry the seeds to different heights;

[0025] The gas injection volume is changed to adapt to the seeds of different crops. The larger the particle size, the more gas injection volume is required. When the gas injection volume reaches a certain level, the regulating module will be ventilated, and the gas will be injected into the drum and blown along the direction of the spiral blades to disperse the pesticides accumulated on the surface of the seeds.

[0026] S3, air is sucked through the air injection module and used in conjunction with the adjustment module to coat a small amount of seeds. The adjustment module not only increases the friction between the seeds and the seeds, but also protrudes a part to lift the seeds to a higher position along the inner wall of the drum, so that the tumbling is more thorough;

[0027] S4. After the seeds enter the drum, the spraying unit is immediately started to spray the medicine configured in the batching unit onto the surface of the seeds inside the drum. As the drum rotates, the seeds coated with the medicine will be discharged from the drum through the discharge hole of the drum, realizing continuous coating operation.

[0028] Compared with the existing technology, the advantages of the present invention are:

[0029] 1. When coating rapeseed seeds, this automated coating equipment injects air into the air injection hood by setting an air pump, an air guide ring and an air guide pipe, so as to increase the pressure in the elastic component and the air injection hood, so that the elastic component is concave toward the inside of the drum, and the inside of the drum is wrinkled, thereby increasing the contact area with the rapeseed, increasing the friction, and being able to lift the rapeseed to a higher position, providing a longer path for the rapeseed to tumble, making the tumbling effect better.

[0030] 2. When coating rapeseed seeds, this automated coating equipment changes the air injection volume through the airflow electric control valve, so that the elastic component and the air injection cover reach different levels of pressure, thereby changing the degree of wrinkling. It is suitable for seeds of different particle sizes and has a wider range of applications. At the same time, it can also adapt to the coating of rapeseed seeds of different volumes, making the coating efficiency higher and the coating quality better.

[0031] 3. When coating rapeseed seeds, this automated coating equipment sets an air blowing structure so that after the pressure in the elastic component and the air injection hood reaches a certain level, gas is sprayed into the drum in the direction of the spiral blade. The air blowing structure that is not buried by the rapeseed seeds will blow away the drug droplets attached to the surface of the rapeseed seeds, which is beneficial to the diffusion of the drug and makes the drug distribution more uniform. The air blowing structure buried by the rapeseed seeds will blow air outward from the bottom of the rapeseed seeds to break up the rapeseed seeds. By frequently adjusting the air flow electric control valve to change the air injection amount, the elastic component will vibrate at a certain frequency, and the blowing will achieve a pulse effect, which can effectively solve the problem of rapeseed seed agglomeration.

[0032] 4. When coating rapeseed seeds, this automated coating equipment extracts the air between the elastic component and the air injection hood through an air pump, forming a negative pressure state between the elastic component and the air injection hood, causing the elastic component to sink between the elastic component and the air injection hood. While increasing the contact area, it also increases the storage space for rapeseed seeds, making it suitable for coating operations of larger volumes of rapeseed seeds. With the use of fixed plates and anti-pillars, the elastic component is blocked by the anti-pillars during the process of sinking between the elastic component and the air injection hood, thereby causing a rubber strip similar to the anti-pillar to bulge. This can lift large volumes of rapeseed seeds to a higher position, which is beneficial to the tumbling of the rapeseed seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0034] Figure 1 This is a schematic structural diagram of an automated rapeseed seed coating device proposed by the present invention;

[0035] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0036] Figure 3 for Figure 1 Enlarged structural schematic detail diagram of the middle and lower feeding unit;

[0037] Figure 4 for Figure 3 Detailed schematic diagram of the structure after rotation at a certain angle;

[0038] Figure 5 for Figure 1 Enlarged structural schematic details of the middle roller unit and the spraying unit;

[0039] Figure 6 for Figure 5 Detailed schematic diagram of the structure after rotation at a certain angle;

[0040] Figure 7 for Figure 5 Enlarged schematic diagram of the structure of the medium spraying unit;

[0041] Figure 8 for Figure 5 Detailed diagram of the structure after removing the spray unit, air injection hood, air guide ring, drive motor, reducer and air guide pipe;

[0042] Figure 9 for Figure 8 Detailed diagram of the structure after removing the adjustment module and rotating it to a certain angle;

[0043] Figure 10 for Figure 8 Detailed schematic diagram of the enlarged structure of the middle regulation module;

[0044] Figure 11 for Figure 10 A section of the enlarged structural schematic diagram of the regulating module is cut out;

[0045] Figure 12 for Figure 11 Detailed schematic diagram of the structure after rotation at a certain angle;

[0046] Figure 13 for Figure 11 Detailed schematic diagram of the front plan structure;

[0047] Figure 14 for Figure 11 Enlarged schematic diagram of the central air blowing structure;

[0048] Figure 15 for Figure 14 Detailed schematic diagram of the structure after rotation at a certain angle;

[0049] Figure 16 for Figure 14 Detailed schematic cross-sectional view of the structure;

[0050] Figure 17 for Figure 16 Detailed diagram of the exploded structure of the middle seal and rubber ring;

[0051] Figure 18 for Figure 12 A schematic detailed diagram of the enlarged structure of a section of the elastic component is shown in FIG.

[0052] In the figure: 1. unloading unit; 2. rolling unit; 3. driving unit; 4. batching unit; 5. supporting frame; 6. spraying unit; 7. unloading hopper; 8. discharging baffle; 9. electric push rod; 10. roller; 11. spiral blade; 12. gas injection hood; 13. air guide ring; 14. air guide pipe; 15. reducer; 16. control valve; 17. injection head; 18. driving motor; 19. regulating module; 20. spiral hole; 21. discharging hole; 22. elastic component; 23. metal pressure plate; 24. fixing plate; 25. blowing structure; 26. pad; 27. pillar; 28. air blocking block; 29. ​​rubber block; 30. air outlet; 31. sealing plug; 32. rubber ring; 33. air guide hole; 34. hard rubber plate; 35. rubber strip; 36. rubber pressure plate. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] Example 1: Reference Figures 1-4 , an automated rapeseed seed coating device, comprising a support frame 5, and further comprising a feeding unit 1, a rolling unit 2, a driving unit 3, a batching unit 4 and a spraying unit 6 installed on the support frame 5;

[0055] The batching unit 4 is used to prepare the medicine. The batching unit 4 is an existing equipment, which consists of a mixing drum and a stirring device. The medicine raw materials are placed in the mixing drum, and then the stirring device is used to stir and mix the raw materials in the mixing drum to prepare the coated medicine.

[0056] The unloading unit 1 includes a unloading hopper 7 fixedly mounted on the top of the support frame 5, a discharge baffle 8 is rotatably mounted on the bottom of the unloading hopper 7, and an electric push rod 9 is rotatably mounted on the unloading hopper 7, and the telescopic end of the electric push rod 9 is rotatably connected to the discharge baffle 8.

[0057] The inclination angle of the discharge baffle 8 is changed by the electric push rod 9 to control the discharge speed of the rapeseed seeds in the discharge hopper 7. The larger the horizontal inclination angle of the discharge baffle 8, the faster the discharge speed, and the smaller the horizontal inclination angle, the slower the discharge speed. The determining factors of the discharge speed include the coating spraying speed and the rolling speed.

[0058] Example 2: This example differs from the example 1 in that: Figure 1 、 Figure 5-Figure 6 、 Figures 8-18 The rolling unit 2 includes a roller 10 with multiple spiral holes 20, an adjustment module 19 and an air injection module. The air injection module is used to inject air into the adjustment module 19. A plurality of discharge holes 21 are opened on the roller 10. A spiral blade 11 is fixedly installed on the inner wall of the roller 10. The seeds are placed inside the roller 10 and driven by the driving unit 3 (the driving unit 3 includes a driving motor 18 fixedly installed on the support frame 5. The driving end of the driving motor 18 is connected to the reducer 15, and the driving end of the reducer 15 is fixedly connected to the roller 10).

[0059] Under the action of the spiral blades 11, the regulating module 19 is used to adjust the friction between the seeds and the drum 10, change the height of the seeds climbing in the drum 10, de-block the adhered seeds, and blow air to the surface of the seeds to make the distribution of the agent more uniform.

[0060] The adjustment module 19 includes multiple elastic components 22 that match the corresponding spiral holes 20. Each elastic component 22 is pressed tightly against the roller 10 by two adjacent spiral metal pressure plates 23. Each metal pressure plate 23 is fixed to the roller 10 by a pad 26 and bolts.

[0061] Start the drive motor 18, the drive end of the drive motor 18 rotates, and after being decelerated by the reducer 15, it is transmitted to the drum 10, driving the drum 10 to rotate. The rotation of the drum 10 will drive the spiral blade 11 to rotate, and the rapeseed seeds inside the drum 10 will rotate with the drum 10 under the action of the friction between the inner wall of the drum 10 and the rapeseed seeds. At this time, the rapeseed seeds spread on the inner wall of the drum 10 will start to slide down from the top under the action of gravity, but will be blocked by the rapeseed seeds below when sliding down, so the seeds inside the seed pile will not slide at the beginning, and the seeds on the surface will start to slide after the drum 10 rotates to a certain angle, so that the seeds inside are exposed, thereby achieving the purpose of tumbling.

[0062] As the drum 10 rotates, the rapeseed seeds move along the spiral blades 11 . Combined with the tilted arrangement of the drum 10 , the rapeseed seeds move from one side of the drum 10 to the other side of the drum 10 and are then discharged from the discharge hole 21 on the drum 10 .

[0063] The metal pressing plate 23 is made of an aluminum alloy with elastic properties. The purpose of this material design is to facilitate the removal and installation of the metal pressing plate 23 and prevent the metal pressing plate 23 from bending or breaking during the installation or removal process;

[0064] The distance between two adjacent bolts and pads 26 is less than or equal to five centimeters. The purpose of the size design here is to make the metal pressure plate 23 between the two pads 26 as close as possible to the elastic component 22 to prevent air leakage.

[0065] The gas injection module includes a gas injection cover 12 fixedly mounted on the outside of the drum 10, an air guide ring 13 rotatably mounted on the gas injection cover 12 and connected to the gas injection cover 12, an air guide pipe 14 fixedly connected to the air guide ring 13, the air guide pipe 14 is connected to an external air pump, and an air flow electric control valve is installed between the air pump and the air guide pipe 14;

[0066] When the air pump is started, the air pump will extract the air between the air injection hood 12 and the drum 10, or inject air into the air injection hood 12 and the drum 10, and change the air injection amount through the airflow electric control valve, and frequently adjust the airflow electric control valve to achieve the purpose of pulsed air injection. During pulsing, the airflow electric control valve is frequently opened and closed, but this will only continuously inject air into the air injection hood 12 and the drum 10, and the air between the air injection hood 12 and the drum 10 will not flow out, which can only achieve the purpose of continuously increasing the pressure between the air injection hood 12 and the drum 10. In order to achieve the purpose of pulsing, an exhaust hole needs to be opened on the air injection hood 12 for exhaust. When the air pump injection amount is greater than the exhaust amount of the exhaust hole, the pressure between the air injection hood 12 and the drum 10 increases, and vice versa. The air pump injection amount is equal to the exhaust amount of the exhaust hole, and the pressure between the air injection hood 12 and the drum 10 is kept balanced.

[0067] The elastic component 22 consists of two rubber pressure plates 36, two hard rubber plates 34, two soft rubber strips and a rubber strip 35. The rubber strip 35 is used to connect the bottoms of the two hard rubber plates 34. The two rubber pressure plates 36 are connected to the corresponding hard rubber plates 34 through the soft rubber strip. A plurality of fixed plates 24 are fixedly mounted on the metal pressure plate 23. Each fixed plate 24 is fixedly mounted with a support column 27 that cooperates with the corresponding rubber strip 35. A plurality of blowing structures 25 are fixedly mounted on each hard rubber plate 34, and a plurality of air outlet holes 30 that cooperate with the corresponding blowing structures 25 are opened on the hard rubber plate 34.

[0068] When the air pump is injecting air: the pressure between the air injection hood 12 and the drum 10 increases, causing the elastic component 22 to sink into the drum 10. At this time, the rubber strip 35 and the soft rubber strip are greatly bent, while the hard rubber plate 34 is slightly deformed, forming a cone-like shape. Since the elastic component 22 is sunken into the drum 10, the contact area between the drum 10 and the rapeseed seeds is increased. When resetting, it is reset by the rubber and its own elasticity. Due to elastic fatigue, it is necessary to use the air pump to generate negative pressure between the air injection hood 12 and the drum 10 for resetting in the later stage.

[0069] When the air pump is injected, the air flow electric control valve is frequently adjusted, and the air is exhausted through the exhaust hole after injection, realizing a telescopic depression and generating a certain frequency of vibration to break up the sticky rapeseed seeds;

[0070] When the air pump fills up to a certain level, the blowing mechanism starts and performs the jet operation;

[0071] When the air pump is sucking air: it is suitable for coating multiple volumes of seeds. There is negative pressure between the air injection cover 12 and the drum 10. The elastic component 22 is recessed between the air injection cover 12 and the drum 10. At this time, the inner wall of the drum 10 is convex outward, which can store more rapeseed seeds.

[0072] As the negative pressure increases, the rubber strip 35 will abut against the support column 27, causing a portion of the rubber strip 35 to protrude. This portion can be regarded as a rake spike, which can lift the rapeseed seeds to a higher position.

[0073] The blowing structure 25 includes a rubber block 29 fixedly adhered to a hard rubber plate 34, an air blocking block 28 is fixedly mounted on the rubber block 29, and a plurality of inclined circular holes are provided on the air blocking block 28 and the rubber block 29, a sealing plug 31 is slidably mounted in each circular hole on the air blocking block 28, and a plurality of air guide holes 33 are provided on each sealing plug 31, and a rubber ring 32 cooperating with the sealing plug 31 is fixedly mounted in each circular hole on the rubber block 29, and the rubber ring 32 blocks the plurality of air guide holes 33 on the sealing plug 31.

[0074] As the pressure between the gas injection hood 12 and the roller 10 increases, the sealing plug 31 will be pushed to the side close to the rubber block 29. At this time, the sealing plug 31 will press the rubber ring 32 to deform the rubber ring 32 (in the initial state, the sealing plug 31 moves to the end, the rubber ring 32 and the sealing plug 31 are in contact with each other, and under negative pressure, the sealing plug 31 still maintains a contact state with the rubber ring 32. Under negative pressure, the sealing plug 31 is limited and cannot move in the opposite direction). As the rubber ring 32 gradually deforms, the inner circle of the rubber ring 32 will gradually It gradually expands. When it expands to a certain extent, the air guide holes 33 blocked by the rubber ring 32 are exposed. At this time, the air between the air injection hood 12 and the drum 10 will enter the drum 10 through the air guide holes 33 and the air outlet holes 30. The air outlet holes 30 are designed to be inclined, and will blow air into the drum 10 at an angle instead of vertically. The air droplets attached to the surface of the rapeseed seeds are blown away by the blowing, so that the agent spreads more evenly. At the same time, the air outlet holes 30 covered by the rapeseed seeds will blow the rapeseed seeds into the pile and break them up.

[0075] Example 3: This example differs from the technical solution of Example 2 in that: Figure 1-Figure 2 、 Figure 7 The feeding unit 1 is used to pour seeds into the drum 10; the spraying unit 6 cooperates with the batching unit 4 to evenly spray the agent configured by the batching unit 4 onto the seeds inside the drum 10.

[0076] The spraying unit 6 includes a control valve 16 fixedly mounted on the support frame 5, a metal pipe fixedly mounted on the control valve 16, the metal pipe extending into the interior of the drum 10, and a plurality of spray heads 17 fixedly mounted on the metal pipe;

[0077] The control valve 16 is used to control the spraying amount and determine the coating speed. Multiple spray heads 17 are arranged in a straight line along the longitudinal direction of the drum 10. When the rapeseed seeds are tumbling and moving in the drum 10, the rapeseed seeds are sprayed with the agent to achieve continuous coating operation and make the coating more uniform.

[0078] The specific operating steps of this device are as follows:

[0079] First, the rapeseed seeds are cleaned to ensure that the surface of the rapeseed seeds is clean, and the batching unit 4 is used to prepare the medicine;

[0080] Then, the clean rapeseed seeds are placed in the feeding unit 1, and the feeding unit 1 sends the seeds to the drum 10;

[0081] Then, the driving unit 3 is started to drive the drum 10 to rotate. The rotation of the drum 10 will drive the spiral blade 11 to rotate, thereby driving the seeds to move along the spiral blade 11. During the movement, the air pump is started to inject air between the air injection hood 12 and the drum 10. The pressure between the air injection hood 12 and the drum 10 increases, which will cause the elastic component 22 to be concave toward the inside of the drum 10. At this time, the rubber strip 35 and the soft rubber strip are greatly bent, while the hard rubber plate 34 is slightly bent and deformed, forming a cone-like shape. Since the elastic component 22 is concave toward the inside of the drum 10, the contact area between the inside of the drum 10 and the rapeseed seeds is increased for continuous and large-scale seed coating, which will change the contact area between the adjustment module 19 and the seeds, thereby increasing the friction force, and turning the seeds at the bottom to the upper part. In addition, according to the volume of the seeds, the amount of air injection between the seeds and the seeds is controlled to change the friction force between the seeds and the seeds, so as to lift the seeds to different heights.

[0082] The air injection volume is changed to adapt to the seeds of different crops. The larger the particle size, the more air injection volume is required. When the air injection volume reaches a certain level, the sealing plug 31 will be pushed to move toward the side close to the rubber block 29. At this time, the sealing plug 31 will press the rubber ring 32 to deform the rubber ring 32 (in the initial state, the sealing plug 31 moves to the end, the rubber ring 32 and the sealing plug 31 are against each other, and under negative pressure, the sealing plug 31 still maintains a state of against the rubber ring 32. Under negative pressure, the sealing plug 31 is limited and cannot move in the opposite direction). As the rubber ring 32 gradually changes The inner circle of the rubber ring 32 will gradually expand. When it expands to a certain extent, the air guide holes 33 blocked by the rubber ring 32 will be exposed. At this time, the air between the gas injection hood 12 and the drum 10 will enter the drum 10 through the air guide holes 33 and the air outlet holes 30. The air outlet holes 30 are designed to be inclined, and will blow air into the drum 10 at an angle instead of vertically. The air will blow away the droplets attached to the surface of the rapeseed seeds, making the drug spread more evenly. At the same time, the air outlet holes 30 covered by the rapeseed seeds will blow the rapeseed seeds into the pile and break them up.

[0083] It is suitable for coating large quantities of seeds. Negative pressure is generated between the air injection hood 12 and the drum 10, and the elastic component 22 is recessed between the air injection hood 12 and the drum 10. At this time, the inner wall of the drum 10 is convex outward, which can store more rapeseed seeds. The convex portion also lifts the seeds to a higher position along the inner wall of the drum 10, which makes the tumbling more thorough. It is suitable for coating very small amounts of seeds. Since the friction between a very small amount of seeds and the rubber strip 35 is very small, they cannot be lifted to an appropriate height. At this time, the convex portion provides an inclined seating platform for the seeds, which can bring the seeds to a higher position.

[0084] After the seeds enter the drum 10, the spraying unit 6 is immediately started to spray the medicine configured in the batching unit 4 onto the surface of the seeds inside the drum 10. As the drum 10 rotates, the seeds coated with the medicine will be discharged from the drum 10 through the discharge hole 21 of the drum 10, realizing continuous coating operation.

[0085] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automated rapeseed seed coating device, comprising a support frame (5), characterized in that: It also includes a feeding unit (1), a rolling unit (2), a driving unit (3), a batching unit (4) and a spraying unit (6) installed on a support frame (5); The batching unit (4) is used to prepare medicine; The rolling unit (2) comprises a roller (10) with a plurality of spiral holes (20), an adjusting module (19) and an air injection module, wherein the air injection module is used to inject air into the adjusting module (19), the roller (10) is provided with a plurality of discharge holes (21), a spiral blade (11) is fixedly mounted on the inner wall of the roller (10), and the seeds are placed inside the roller (10), and the roller (10) is driven to rotate by the driving unit (3), and the seeds are tumbled under the action of the spiral blade (11), and the adjusting module (19) is used to adjust the friction between the seeds and the roller (10), change the height of the seeds climbing in the roller (10), deblock the adhered seeds, and blow air to the surface of the seeds to make the distribution of the medicine more uniform; The feeding unit (1) is used to pour seeds into the drum (10); the spraying unit (6) cooperates with the batching unit (4) to evenly spray the medicine configured by the batching unit (4) onto the seeds inside the drum (10).

2. The rapeseed seed automated coating equipment according to claim 1, characterized in that: The unloading unit (1) comprises a unloading hopper (7) fixedly mounted on the top of a support frame (5); a discharge baffle (8) is rotatably mounted on the bottom of the unloading hopper (7); an electric push rod (9) is rotatably mounted on the unloading hopper (7); and a telescopic end of the electric push rod (9) is rotatably connected to the discharge baffle (8).

3. The rapeseed seed automated coating equipment according to claim 1, characterized in that: The adjustment module (19) includes a plurality of elastic components (22) matched with corresponding spiral holes (20), each of the elastic components (22) is pressed tightly against the roller (10) by two adjacent spiral metal pressure plates (23), and each metal pressure plate (23) is fixedly mounted on the roller (10) by a pad (26) and a bolt.

4. The rapeseed seed automated coating equipment according to claim 3, characterized in that: The elastic component (22) is composed of two rubber pressure plates (36), two hard rubber plates (34), two soft rubber strips and a rubber strip (35). The rubber strip (35) is used to connect the bottoms of the two hard rubber plates (34). The two rubber pressure plates (36) are connected to the corresponding hard rubber plates (34) through the soft rubber strip. A plurality of fixed plates (24) are fixedly mounted on the metal pressure plate (23). Each of the fixed plates (24) is fixedly mounted with a support column (27) that matches the corresponding rubber strip (35). Each of the hard rubber plates (34) is fixedly mounted with a plurality of blowing structures (25), and the hard rubber plate (34) is provided with a plurality of air outlet holes (30) that match the corresponding blowing structures (25).

5. The rapeseed seed automated coating equipment according to claim 4, characterized in that: The blowing structure (25) includes a rubber block (29) fixedly bonded to a hard rubber plate (34), an air blocking block (28) fixedly mounted on the rubber block (29), a plurality of inclined circular holes provided on the air blocking block (28) and the rubber block (29), a sealing plug (31) slidably mounted in each circular hole on the air blocking block (28), a plurality of air guide holes (33) provided in each sealing plug (31), a rubber ring (32) matched with the sealing plug (31) fixedly mounted in each circular hole on the rubber block (29), the rubber ring (32) blocking the plurality of air guide holes (33) on the sealing plug (31).

6. The rapeseed seed automated coating equipment according to claim 5, characterized in that: The gas injection module comprises a gas injection hood (12) fixedly mounted on the outside of the drum (10); a gas guide ring (13) connected to the gas injection hood (12) is rotatably mounted on the gas injection hood (12); a gas guide pipe (14) is fixedly connected to the gas guide ring (13); the gas guide pipe (14) is connected to an external air pump, and an airflow electric control valve is installed between the air pump and the gas guide pipe (14).

7. The rapeseed seed automated coating equipment according to claim 1, characterized in that: The driving unit (3) includes a driving motor (18) fixedly mounted on a support frame (5), a driving end of the driving motor (18) is connected to a reducer (15), and a driving end of the reducer (15) is fixedly connected to the roller (10).

8. The rapeseed seed automated coating equipment according to claim 1, characterized in that: The spraying unit (6) comprises a control valve (16) fixedly mounted on a support frame (5), a metal pipe fixedly mounted on the control valve (16), the metal pipe extending into the interior of the drum (10), and a plurality of spray heads (17) fixedly mounted on the metal pipe.

9. The rapeseed seed automated coating equipment according to claim 3, characterized in that: The metal pressing plate (23) is made of an aluminum alloy material with elastic properties, and the distance between two adjacent bolts and the spacer (26) is less than or equal to five centimeters.

10. An automated rapeseed seed coating method, used for the automated rapeseed seed coating equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, the rapeseed seeds are cleaned to ensure that the surface of the rapeseed seeds is clean, and the batching unit (4) is used to prepare the medicine; Then, the clean rapeseed seeds are placed in a feeding unit (1), and the feeding unit (1) feeds the seeds into a drum (10); S2, then starting the driving unit (3) to drive the drum (10) to rotate, the rotation of the drum (10) will drive the spiral blade (11) to rotate, thereby driving the seeds to move along the spiral blade (11), during the movement, the air injection module injects air for continuous large-scale seed coating, which will change the contact area between the regulating module (19) and the seeds, thereby increasing the friction force, and turning the seeds at the bottom to the upper part, and according to the amount of seeds, the friction force between the seeds and the regulating module (19) is controlled to carry the seeds to different heights; By changing the amount of gas injection, the seeds of different crops can be adapted. The larger the particle size, the more gas injection. When the gas injection reaches a certain level, the regulating module (19) will be ventilated, and the gas will be injected into the drum (10) and blown along the direction of the spiral blade (11) to disperse the medicine accumulated on the surface of the seeds. S3, sucking air through the air injection module, in conjunction with the use of the regulating module (19), is used for coating a small amount of seeds. The regulating module (19) not only increases the friction between the seeds and the seeds, but also protrudes a portion to lift the seeds to a higher position along the inner wall of the drum (10), so that the tumbling is more thorough; S4. After the seeds enter the drum (10), the spraying unit (6) is immediately started to spray the medicine configured in the batching unit (4) onto the surface of the seeds inside the drum (10). As the drum (10) rotates, the seeds coated with the medicine are discharged from the drum (10) through the discharge hole (21) of the drum (10), thereby realizing a continuous coating operation.

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