Static air-drying conjunctiva bin

Abstract

The utility model relates to the technical field of seed processing, and provides a static air-drying and film-forming bin which is used for coating of air-dried seeds and comprises a material bin, a feeding port is formed in the top of the material bin, and a ventilation opening is formed in the side wall of the material bin and located in the lower portion of the material bin. The conical hopper is arranged in the stock bin, corresponds to the feeding opening up and down and is used for dispersing seeds falling from the feeding opening; the air uniformizing device is arranged in the stock bin and located below the conical hopper, the air uniformizing device communicates with the ventilation opening and extends in the through direction of the ventilation opening, the air uniformizing device is provided with a plurality of air outlets, an air uniformizing screen is installed on a framework of the air uniformizing device, and the air uniformizing screen is used for evenly dispersing air input by the ventilation opening into the stock bin through the air uniformizing screen; and it is ensured that the coated seeds have sufficient time to be air-dried in the stock bin. Through uniform air blowing of the static film forming bin, moisture on seed coating skins is air-dried, and the technical problem that seeds are prone to film forming due to moisture of coatings in the seed coating process is solved.

Description

Technical Field

[0001] This utility model relates to the field of seed processing technology, specifically to a static air-drying film-forming chamber. Background Technology

[0002] In the field of seed processing, after seed coating, the coating material needs to be cured by air drying to form a protective film layer, thereby improving the seed's resistance to pests and diseases, germination rate, and crop yield. Traditional seed coating air drying processes mostly use natural sun drying or simple ventilation drying equipment. These methods suffer from low drying efficiency and unstable film quality, making it difficult to meet the needs of large-scale production.

[0003] With the development of agricultural modernization, some enterprises have adopted dynamic air-drying equipment to achieve uniform drying of seeds through stirring and turning. However, during the operation of dynamic air-drying equipment, frequent friction between seeds and equipment parts can easily lead to damage to the coating film, reducing the coating effect. At the same time, dynamic air-drying equipment has a complex structure, high energy consumption, and high maintenance costs. Furthermore, during the seed coating process, coated seeds are prone to film formation, and existing static air-drying equipment suffers from uneven airflow distribution, leading to localized over-drying or insufficient drying of seeds during the drying process, affecting the consistency and integrity of the seed coating film. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a static air-drying film-forming chamber, which solves the technical problems in the prior art where seeds are prone to film formation due to moisture in the coating during the seed coating process, and the air-drying equipment suffers from easy damage to the coating film and uneven airflow, thus affecting the coating effect.

[0005] According to one aspect, at least one embodiment of the present invention provides a static air-drying film-forming chamber for air-drying seed coatings, comprising:

[0006] The silo has a feed inlet at the top and a ventilation opening on the side wall of the silo, which is located at the bottom of the silo.

[0007] A cone-shaped hopper is installed inside the hopper and corresponds vertically to the feed inlet. The cone-shaped hopper is used to disperse the seeds falling from the feed inlet.

[0008] A uniform air distribution device is installed inside the hopper and located below the cone hopper. The uniform air distribution device is connected to and extends along the ventilation opening. The uniform air distribution device has several air outlets. A uniform air distribution screen is detachably connected to the uniform air distribution device for covering the air outlets. The uniform air distribution screen is used to evenly distribute the air input from the ventilation opening into the hopper to dry the coating of the falling seeds.

[0009] Optionally, multiple ventilation openings and air distribution devices are provided, and the ventilation openings and air distribution devices correspond one-to-one; multiple air distribution devices are arranged at intervals within the silo.

[0010] Optionally, a fan is provided on the outside of the silo, the air outlet of the fan is connected to an air supply pipe, the air outlet of the air supply pipe is connected to a diversion pipe, and the diversion pipe is connected to multiple ventilation openings.

[0011] Optionally, the longitudinal section of the air distribution device is a regular polygon, and the peripheral wall of the air distribution device is set at an acute angle to the longitudinal plane passing through the central axis of the air distribution device.

[0012] Optionally, both ends of the air distribution device are provided with multiple mounting flanges extending away from the central axis of the air distribution device, and each mounting flange is fixedly connected to the inner wall of the hopper by bolts.

[0013] Optionally, connecting blocks are provided on both ends of the uniform air screen, and the connecting blocks are provided with slides. The slides are perpendicular to the surface of the uniform air screen, and a collar is slidably disposed in the slide. The collar is sleeved on the bolt and threadedly connected to the bolt. When the uniform air screen is subjected to wind force or seed pressure, the uniform air screen can slide back and forth along the slide under the cooperation of the connecting blocks and the collar.

[0014] Optionally, the slide rail is provided with two springs for abutting against the outer wall of the collar. The two springs are respectively located near both ends of the slide rail and are used to elastically press against both sides of the collar.

[0015] Optionally, the hopper is connected to the inner wall of the hopper by multiple horizontally extending mounting rods, the top diameter of the cone hopper is smaller than the bottom diameter, and the central axis of the cone hopper coincides with the central axis of the feed inlet.

[0016] Optionally, the bottom of the hopper is provided with a discharge hopper, the bottom of the discharge hopper is provided with a discharge port, and the bottom of the discharge hopper is provided with a sliding gate for controlling the opening and closing of the discharge port.

[0017] Optionally, the discharge hopper is provided with multiple partition plates, which are used to divide the discharge hopper into multiple independent discharge troughs, and the bottom of each discharge trough forms a corresponding discharge port.

[0018] The beneficial effects of the embodiments of this utility model are as follows:

[0019] In this invention, during use, coated seeds are lifted to the top of the silo by an elevator and then enter the silo through the inlet. Upon entering the silo, the seeds fall onto a conical hopper, which guides them to disperse and fall around the silo. Simultaneously, airflow generated by an external fan enters the air distribution device through a vent, is evenly dispersed by an air distribution screen, and then blown into the silo. The dispersed seeds come into full contact with the uniform airflow, and the seed coating gradually dries and forms a film under the action of the airflow. After falling, the seeds accumulate in the silo, so the air distribution device can continuously blow air onto the seed coatings piled in the silo to ensure they are thoroughly dried before finally being discharged from the bottom of the silo. The conical hopper effectively prevents seeds from accumulating and achieves uniform seed dispersion, creating conditions for subsequent uniform air drying. The rectangular or cylindrical air distribution device, combined with the air distribution screen, can evenly distribute the airflow to all areas of the silo, solving the problem of uneven airflow distribution in traditional static air drying equipment. It also prevents seeds from accumulating and clumping, ensuring that the seed coating can be dried quickly and thoroughly, improving the film quality. The overall structure is simple, and compared with dynamic air drying equipment, it reduces friction between seeds and components, thus reducing the risk of coating film damage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the static air-drying film-forming chamber in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the internal structure of the static air-drying film-forming chamber in the embodiment;

[0023] Figure 3 for Figure 2 A schematic diagram of the air distribution device in the embodiment;

[0024] Figure 4 for Figure 3 A magnified view of a portion at point A in the embodiment;

[0025] Figure 5 for Figure 1 A side view of the static air-drying membrane chamber in the embodiment;

[0026] Figure 6 for Figure 5 A cross-sectional view at BB in the embodiment;

[0027] Figure 7 for Figure 2 The schematic diagram of the discharge hopper in the embodiment is shown.

[0028] In the diagram: 1. Hopper, 101. Feed inlet, 102. Ventilation outlet, 2. Conical hopper, 3. Air distribution device, 301. Mounting surface, 4. Air distribution screen, 5. Fan, 6. Air supply pipe, 7. Diversion pipe, 8. Mounting flange, 9. Bolt, 10. Connecting block, 1001. Slide rail, 11. Collar, 12. Spring, 13. Mounting rod, 14. Discharge hopper, 1401. Discharge port, 15. Sliding gate, 16. Divider plate, 17. Discharge trough. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0030] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-7 As shown, a static air-drying film-forming chamber according to an embodiment of the present invention is used for air-drying seed coating, including a hopper 1, a conical hopper 2, and an air-dispersing device 3. The hopper 1 is rectangular in shape, with a rectangular inlet 101 at the top. Ventilation openings 102 perpendicular to the axial direction of the inlet 101 are located on the rear side wall of the hopper 1, all below the inlet 101. The conical hopper 2 is located inside the hopper 1 near the inlet 101. The conical hopper 2 has a conical shape and a circular opening at its top, used to disperse the seeds falling through the inlet 101. The uniform air distribution device 3 can be cylindrical or square. This design uses a square shape as an example. The uniform air distribution device 3 is installed inside the hopper 1 and located below the cone hopper 2. The uniform air distribution device 3 extends along the axial direction of the ventilation opening 102 and communicates with the ventilation opening 102. A uniform air distribution screen 4 is detachably connected to the outer wall of the uniform air distribution device 3. The uniform air distribution screen 4 is used to evenly distribute the airflow input from the ventilation opening 102 into the hopper 1 to air dry the coating of the falling seeds. After the seeds fall, they will pile up in the hopper. Therefore, the uniform air distribution device 3 can also continuously blow air onto the coating of the seeds piled in the hopper to dry them thoroughly.

[0036] For example, such as Figure 1 and Figure 2 As shown, it should be noted that the seed coating is still moist immediately after coating, and it needs to be air-dried at this time. Specifically, during use, the coated seeds are lifted to the top of hopper 1 by an elevator and then enter hopper 1 through inlet 101. Upon entering hopper 1, the seeds fall onto the conical hopper 2, and under the guidance of the hopper 2, the seeds disperse and fall to the surrounding areas of hopper 1. At the same time, the airflow generated by the external fan 5 enters the air distribution device 3 through vent 102, and after being evenly dispersed by the air distribution screen 4, it is blown into hopper 1. The dispersed and falling seeds come into full contact with the uniform airflow, and the seed coating gradually dries and forms a film under the action of the airflow, finally being discharged from the bottom of hopper 1.

[0037] The cone-shaped hopper 2 effectively prevents seeds from piling up, achieving uniform seed dispersion and creating conditions for subsequent uniform air drying. The rectangular or cylindrical air-distributing device 3, in conjunction with the air-distributing screen 4, evenly distributes airflow to all areas of the hopper 1, solving the problem of uneven airflow distribution in traditional static air-drying equipment. It also prevents seeds from clumping together, ensuring the seed coating dries quickly and thoroughly, improving film quality. The overall structure is simple, reducing friction between seeds and components compared to dynamic air-drying equipment, thus lowering the risk of coating film damage.

[0038] In some examples, multiple vents 102 are arranged at intervals on the rear side wall of the silo 1. The number of vents 102 is the same and they are evenly distributed. Correspondingly, multiple air distribution devices 3 are provided inside the silo 1. The vents 102 correspond one-to-one with the air distribution devices 3. The multiple air distribution devices 3 are arranged at intervals inside the silo 1. Whether they are rectangular or cylindrical, they maintain an appropriate distance between them to ensure smooth airflow and sufficient drying of the seeds.

[0039] For example, such as Figure 2 As shown, specifically, the airflow generated by the blower 5 is delivered to each vent 102 via the diversion pipe 7. The air distribution device 3 corresponding to each vent 102 evenly distributes the airflow into the hopper 1. After the seeds enter the hopper 1, they fall evenly under the dispersing effect of the cone hopper 2. Multiple air distribution devices 3 work simultaneously to evenly distribute the airflow in different areas of the hopper 1. The multiple uniform airflows work together to further enhance the drying effect of the seed coating.

[0040] The installation of multiple vents 102 and a uniform airflow device 3 increases the input volume and coverage of airflow, significantly improving drying efficiency. The evenly distributed layout ensures that seeds in all locations within the hopper 1 receive uniform airflow, further enhancing the uniformity of seed coating drying and guaranteeing consistent coating quality across different areas.

[0041] In some examples, a fan 5 is installed on the outside of the silo 1. The air outlet of the fan 5 is connected to an air supply duct 6, and the other end of the air supply duct 6 is connected to a distribution duct 7. The distribution duct 7 is a rectangular or cylindrical box with multiple branches. Each branch is connected to a vent 102 on the rear side wall of the silo 1, ensuring that the airflow can be evenly distributed to each vent 102. Regardless of whether the air distribution device 3 is rectangular or cylindrical, a stable airflow supply can be obtained.

[0042] For example, such as Figure 1 , Figure 5 and Figure 6As shown, specifically, when the blower 5 is started, the airflow generated by the blower 5 enters the distribution pipe 7 through the air supply pipe 6. The distribution pipe 7 evenly distributes the airflow to each branch, and then the airflow is transported to the corresponding ventilation opening 102 through the branch pipes, and finally enters the air distribution device 3. During the entire airflow transportation process, the structure of the distribution pipe 7 ensures that the air intake of each ventilation opening 102 is basically the same, thereby ensuring the uniformity of airflow in each area of ​​the silo 1.

[0043] The diversion pipe 7 achieves uniform airflow distribution, ensuring stable air intake at multiple vents 102 and preventing excessively strong or weak local airflow within the hopper 1 due to differences in air intake, thus further optimizing the drying effect of the static air-drying film-forming hopper. The rational pipe layout and connection method, while ensuring airflow intensity, reduces energy loss during airflow transport, improving the economic efficiency of equipment operation.

[0044] In some examples, for instance, when the air distribution device 3 is rectangular, its cross-section is rectangular, and its four sides serve as mounting surfaces 301, each of which is inclined relative to the vertical direction of the hopper 1. As another example, when the air distribution device 3 is cylindrical, its outer circumference forms the mounting surface 301, which is also inclined at a certain angle relative to the vertical direction of the hopper 1. In general, the mounting surface 301 is provided with structures for mounting the air distribution screen 4, such as slots or fasteners, to facilitate the disassembly and installation of the air distribution screen 4.

[0045] For example, such as Figure 2 and Figure 3 As shown, when the airflow enters the air distribution device 3 through the vent 102, the airflow direction changes in both the cuboid and cylindrical air distribution devices 3 due to the tilt of the mounting surface 301, blowing obliquely towards the seed flow in the hopper 1. During the contact between the airflow and the seed flow, the tilted airflow can better envelop the seeds, allowing the seed surface to fully contact the airflow.

[0046] The inclined arrangement of mounting surface 301 alters the airflow direction, allowing the airflow to make more comprehensive contact with the seeds and improving the seed coating drying efficiency. Compared to vertically blown airflow, the inclined airflow reduces the disordered movement of seeds under the impact of airflow, lowers the probability of collisions between seeds and between seeds and the inner wall of hopper 1, and further protects the seed coating film from damage.

[0047] In some examples, multiple mounting flanges 8 extend outward from both ends of the air distribution device 3. Whether it is a rectangular or cylindrical air distribution device 3, these mounting flanges 8 are used to fix it to the inner wall of the silo 1. The mounting flanges 8 are provided with fixing holes, and the mounting flanges 8 are fastened to the inner wall of the silo 1 by bolts 9, ensuring that the air distribution device 3 is stably installed in the silo 1, and the connection direction of the bolts 9 ensures that the axial direction of the air distribution device 3 is consistent with the axial direction of the ventilation opening 102 after installation.

[0048] For example, such as Figure 3 and Figure 4 As shown, when installing the air distribution device 3, the mounting flange 8 is attached to the corresponding position on the inner wall of the hopper 1, and bolts 9 are passed through the fixing holes and tightened to firmly fix the air distribution device 3 inside the hopper 1. During equipment operation, the connection structure between the mounting flange 8 and the bolts 9 can withstand the impact of airflow and the pressure of falling seeds, ensuring that the air distribution device 3 will not shift. The fixing method of the mounting flange 8 and the bolts 9 is simple in structure and easy to install, providing reliable fixed support for the air distribution device 3 and ensuring its stability during long-term use. This fixing method facilitates the disassembly and maintenance of the air distribution device 3. When the air distribution screen 4 needs to be cleaned or replaced, the air distribution device 3 can be quickly disassembled for operation.

[0049] In some examples, connecting blocks 10 are provided on both ends of the uniform air distribution screen 4, and slide rails 1001 perpendicular to the mounting surface 301 are provided on the connecting blocks 10. A collar 11 is slidably disposed within the slide rails 1001, and the collar 11 is adapted to the bolts 9 that fix the flange 8 and is connected by threads. Springs 12 are installed on the inner walls of the slide rails 1001 on both sides of the collar 11, with one end of the spring 12 fixed to the inner wall of the slide rail 1001 and the other end abutting against the collar 11. Whether it is a rectangular or cylindrical uniform air distribution device 3, the uniform air distribution screen 4 achieves a slidable connection in this way.

[0050] For example, such as Figure 3 As shown, when the airflow passes through the uniform air distribution screen 4, the airflow exerts an outward pushing force on the screen, while the falling seeds also exert downward pressure on the screen. Under the action of these two pressures, the uniform air distribution screen 4 drives the connecting block 10 to slide along the collar 11 through the slide rail 1001. At this time, the springs 12 on both sides of the collar 11 are compressed. When the pressure decreases, the screen returns to its original position under the elastic restoring force of the springs 12, and so on, repeating the motion. It should be noted that the collar 11 does not move when the uniform air distribution screen 4 is moving.

[0051] The reciprocating sliding of the uniform airflow screen 4 effectively prevents seeds from clogging the screen holes, ensuring uniform airflow output. The spring 12 provides cushioning and restoring force for the screen's sliding motion, making the screen's movement smoother and preventing damage to the seed coating caused by violent screen shaking. Compared to fixed screens, this sliding screen structure has better self-cleaning capabilities, extends the screen's lifespan, and reduces equipment maintenance frequency.

[0052] In some examples, multiple spring 12 mounting seats are provided on the inner wall of the slide 1001. The spring 12 mounting seats are symmetrically distributed along the sliding direction of the collar 11, and one spring 12 is installed on each mounting seat. The springs 12 are selected as compression springs with a suitable elastic coefficient, and their materials have good corrosion resistance to adapt to the seed processing environment. Whether it is the rectangular air distribution device 3 or the air distribution screen 4 corresponding to the cylindrical air distribution device 3, the springs 12 are arranged in this manner.

[0053] For example, such as Figure 4 As shown, when the uniform air screen 4 slides downward under pressure, the springs 12 on both sides of the collar 11 are compressed simultaneously. The elastic force generated by the springs 12 balances the pressure on the screen, limiting excessive sliding. When the pressure disappears, the springs 12, with their elastic restoring force, push the collar 11 and the screen upward to reset. Due to the symmetrical arrangement of the springs 12, the screen remains stable during the reset process and does not tilt. The multiple symmetrically arranged springs 12 enhance the buffering and reset effect on the uniform air screen 4, enabling the screen to maintain stable reciprocating motion under different pressures. The spring 12 material has good corrosion resistance, ensuring long-term stable operation and further improving the reliability of the equipment.

[0054] In some examples, multiple spaced mounting rods 13 are provided inside the hopper 1 near the feed inlet 101. The cone hopper 2 is fixed inside the hopper 1 by these mounting rods 13, and the center of the top surface of the cone hopper 2 is on the same vertical line as the center of the feed inlet 101, ensuring that the seeds can be evenly dispersed.

[0055] For example, such as Figure 2 and Figure 6 As shown, seeds fall from the inlet 101 and land directly on the top surface of the cone hopper 2. Due to the structure of the cone hopper 2 and its relative position to the inlet 101, the seeds are evenly dispersed along the outer circumference of the cone hopper 2, falling around the hopper 1 to form a uniform seed flow. The cone hopper 2 can maximize the uniform dispersion of seeds and avoid local accumulation of seeds in the hopper 1. The mounting rod 13 provides stable support for the cone hopper 2, ensuring that the cone hopper 2 remains in a fixed position under the impact of falling seeds, thus ensuring the stability of the seed dispersion effect.

[0056] In some examples, the bottom of the hopper 1 is connected to a discharge hopper 14, the bottom of the discharge hopper 14 is provided with a discharge port 1401, and a sliding gate 15 is installed at the bottom of the discharge hopper 14. The sliding gate 15 is connected to the bottom of the discharge hopper 14 via a slide rail and is provided with an operating handle for easy manual control of the sliding of the gate.

[0057] For example, such as Figure 6 and Figure 7 As shown, during the seed coating and drying process, the sliding gate 15 is in the closed state to prevent premature seed discharge. After the seed coating has dried and formed a film, pulling the handle causes the gate to slide along the slide rail and open the discharge port 1401. The seeds are discharged from the hopper 1 through the discharge port 1401 under gravity. The sliding gate 15 enables flexible control of seed discharge, allowing the discharge port 1401 to be opened or closed according to the drying progress and production needs. The structure is simple and easy to operate. Compared to complex discharge control devices, it reduces equipment costs and maintenance difficulty, while ensuring sufficient drying time for the seeds in the hopper 1, thus improving the quality of the seed coating and film formation.

[0058] In some examples, multiple discharge ports 1401 are provided, and a partition plate 16 is installed inside the discharge hopper 14. The partition plate 16 divides the discharge hopper 14 into multiple independent discharge slots 17, and each discharge slot 17 corresponds to one discharge port 1401. The shape and installation method of the partition plate 16 are designed according to the shape of the discharge hopper 14 to ensure effective separation of the discharge area.

[0059] For example, such as Figure 6 and Figure 7 As shown, when the sliding gate 15 is opened, the air-dried seeds are discharged from each discharge trough 17 through the corresponding discharge port 1401. Due to the presence of the separator 16, the seeds do not interfere with each other during discharge, allowing for simultaneous discharge from multiple directions, facilitating subsequent seed collection or transport to different processing stages. The design of multiple discharge ports 1401 and separator 16 improves seed discharge efficiency and can simultaneously meet the feeding needs of multiple subsequent processing equipment. The independent discharge troughs 17 prevent seed mixing during discharge, facilitating the differentiation and processing of different batches or varieties of seeds, optimizing the layout of the seed processing production line, and improving the automation level and production efficiency of the entire seed processing process.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A static air-drying film-forming chamber for air-drying seed coating, characterized in that, include: The silo (1) has a feed inlet (101) at the top and a ventilation opening (102) on the side wall of the silo (1). The ventilation opening (102) is located at the bottom of the silo (1). A cone hopper (2) is set inside the hopper (1) and corresponds vertically to the feed inlet (101). The cone hopper (2) is used to disperse the seeds falling into the feed inlet (101). A uniform air distribution device (3) is installed inside the silo (1) and located below the cone hopper (2). The uniform air distribution device (3) is connected to the ventilation opening (102) and extends along the through direction of the ventilation opening (102). The uniform air distribution device (3) has several air outlets. A uniform air distribution screen (4) for covering the air outlets is detachably connected to the uniform air distribution device (3). The uniform air distribution screen (4) is used to evenly distribute the air input from the ventilation opening (102) into the silo (1) to air dry the coating of the falling seeds.

2. The static air-drying film-forming chamber according to claim 1, characterized in that, Multiple ventilation openings (102) and multiple air distribution devices (3) are provided, and the ventilation openings (102) and the air distribution devices (3) correspond one-to-one; multiple air distribution devices (3) are spaced apart in the silo (1).

3. The static air-drying film-forming chamber according to claim 2, characterized in that, A fan (5) is provided on the outside of the silo (1). The air outlet of the fan (5) is connected to an air supply pipe (6). The air outlet of the air supply pipe (6) is connected to a diversion pipe (7). The diversion pipe (7) is connected to multiple ventilation openings (102).

4. The static air-drying film-forming chamber according to claim 1, characterized in that, The longitudinal section of the uniform air distribution device (3) is a regular polygon, and the peripheral wall of the uniform air distribution device (3) is set at an acute angle with the longitudinal surface passing through the central axis of the uniform air distribution device (3).

5. The static air-drying film-forming chamber according to claim 1, characterized in that, Both ends of the uniform air device (3) are provided with multiple mounting flanges (8) extending to the side away from the central axis of the uniform air device (3). Each mounting flange (8) is fixedly connected to the inner wall of the silo (1) by bolts (9).

6. The static air-drying film-forming chamber according to claim 5, characterized in that, Both ends of the uniform air screen (4) are provided with connecting blocks (10), and the connecting blocks (10) are provided with slides (1001). The slides (1001) are perpendicular to the plate surface of the uniform air screen (4). A collar (11) is slidably provided in the slides (1001). The collar (11) is sleeved on the bolt (9) and threadedly connected to the bolt (9). When the uniform air screen (4) is subjected to wind force or seed pressure, the uniform air screen (4) can slide back and forth along the slides (1001) under the cooperation of the connecting blocks (10) and the collar (11).

7. The static air-drying film-forming chamber according to claim 6, characterized in that, The slide (1001) is provided with two springs (12) for abutting against the outer wall of the collar (11). The two springs (12) are respectively located near the two ends of the slide (1001) and are used to elastically press against the two sides of the collar (11).

8. The static air-drying film-forming chamber according to claim 1, characterized in that, The hopper (1) is connected to the inner wall of the hopper (1) by multiple horizontally extending mounting rods (13). The top diameter of the cone hopper (2) is smaller than the bottom diameter, and the central axis of the cone hopper (2) coincides with the central axis of the feed inlet (101).

9. The static air-drying film-forming chamber according to claim 1, characterized in that, The bottom of the hopper (1) is provided with a discharge hopper (14), the bottom of the discharge hopper (14) is provided with a discharge port (1401), and the bottom of the discharge hopper (14) is provided with a sliding gate (15) for controlling the opening and closing of the discharge port (1401).

10. The static air-drying film-forming chamber according to claim 9, characterized in that, The discharge hopper (14) is provided with multiple partition plates (16), which are used to divide the discharge hopper (14) into multiple independent discharge troughs (17), and each discharge trough (17) has a corresponding discharge port (1401) at its bottom.

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