Feed additive slow-release coating device

By designing premixing, spraying, and curing components in the feed additive slow-release coating device, the problems of uneven coating and uncontrollable release rate were solved, achieving uniform coating and efficient production, and improving the slow-release effect.

CN224038375UActive Publication Date: 2026-03-27HEBEI ZHIMEI FEED CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-21
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

In existing technologies, feed additives have uneven coating, resulting in poor sustained-release effects and uncontrollable release rates, which affects utilization.

Method used

A feed additive slow-release coating device was designed, including a premixing component, a spraying component, and a curing component inside the cavity. The cavity is divided into mixing, spraying, and curing areas by a partition plate and a spraying tray. The material is evenly spread and sprayed using a scraper and a spraying section, and cured by a heating component.

Benefits of technology

Uniform coating of feed additives was achieved, improving the slow-release effect, and automated production was realized, ensuring the uniformity of the coating layer and release control.

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Abstract

The utility model provides a feed additive slow-release coating device. The feed additive slow-release coating device comprises a cavity with a cavity, and a premixing assembly, a spraying assembly and a curing assembly which are sequentially arranged in the cavity from top to bottom. A feeding port is formed in the upper portion of the cavity, a partition plate arranged in the radial direction is arranged in the cavity, and a spraying tray is arranged below the partition plate. The premixing assembly comprises a first driving part and a stirring part, the spraying assembly comprises a rotating shaft connected to the stirring part, a sleeve is arranged on the outer side of the rotating shaft in a sleeving mode, a circulation space is formed between the sleeve and the rotating shaft, and a channel communicated with the circulation space is formed in the material receiving disc; materials flow from the interior of the circulation space to the position above the spraying tray. The bottom end of the sleeve is connected with a scraping plate, the spraying tray is connected to the rotating shaft, when the first driving part drives the stirring part to rotate, the scraping plate rotates along the axis of the cavity, and a spraying part is arranged above the sleeve. According to the utility model, the coating is uniformly sprayed, and the slow-release effect is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to feed additive coating technical field, especially in kind of feed additive slow -release coating device. BACKGROUND

[0002] Feed additive coating technology is a technology that mixes various feed additives in proportion and encapsulates them in plastic bags. This technology not only ensures the quality and stability of feed additives, but also reduces the usage and waste of feed additives. Then, the selected coating material is dissolved or dispersed in a suitable solvent to form a coating liquid. The coating liquid is sprayed onto the surface of the feed additive through a spraying device to form one or more layers of coating. The sprayed material needs to be dried to solidify and tightly adhere to the surface of the feed additive.

[0003] The coating technology can improve the palatability of feed additives, making them more easily accepted by animals. The coating can protect the active ingredients from environmental influences and improve their bioavailability in the animal body. The existing traditional coating process mainly uses single-layer spraying or mixing and stirring methods, which can easily lead to uneven coating and poor slow-release effect. Moreover, the thickness and release rate of the coating cannot be controlled, resulting in premature or delayed release of the additives, which affects the utilization rate of feed. SUMMARY

[0004] Therefore, the utility model aims at providing a feed additive slow-release coating device to ensure uniform coating of feed additives, improve the slow-release effect, and achieve efficient production.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A feed additive slow-release coating device includes a cavity with a cavity, and a premixing assembly, a spraying assembly, and a curing assembly arranged in the cavity from top to bottom.

[0007] The cavity is provided with an inlet above the cavity, and a partition plate is arranged radially in the cavity. A spraying tray is arranged below the partition plate.

[0008] The partition plate is provided with a plurality of material leakage holes, and a material receiving tray is arranged below the partition plate. The premixing assembly includes a first driving part and a stirring part connected to the power output end of the first driving part. The spraying assembly includes a rotating shaft connected to the stirring part. A sleeve is arranged outside the rotating shaft, and a flow space is arranged between the sleeve and the rotating shaft. The material receiving tray is provided with a channel communicating with the flow space, and the material flows from the flow space to above the spraying tray.

[0009] The sleeve bottom end is connected with a scraper, the spraying tray is connected on the rotating shaft, when the first driving part drives the stirring part to rotate, the scraper rotates along the axis of the cavity, so that the scraper scrapes the material to be flat on the spraying tray, and a spraying part is arranged above the sleeve.

[0010] Further, the partition plate and the spraying tray divide the cavity into a mixing area, a spraying area and a curing area.

[0011] The first driving part is connected above the cavity, the stirring part comprises a stirring shaft connected to the power output end of the first driving part, and a stirring frame arranged on the stirring shaft, the stirring frame is arranged from top to bottom in the mixing area, and the feeding port is communicated with the mixing area.

[0012] Further, the receiving disc comprises a bottom disc and a protruding part connected to the bottom disc, and a plurality of protruding parts are arranged correspondingly to the material leakage holes.

[0013] The channel comprises a main flow channel arranged on the bottom disc and a branch flow channel communicated with the main flow channel, the branch flow channel is formed in the protruding part, and the main flow channel is communicated with the flow-through space.

[0014] Further, a flow-through gap is arranged between the sleeve bottom end and the spraying tray, and at least two scrapers are arranged linearly on the sleeve.

[0015] Further, the sleeve is fixedly connected to the rotating shaft, the second driving part is connected to the partition plate, the power output end of the second driving part is connected to the rotating shaft, the fixed end of the second driving part is connected to the power output end of the first driving part, and the first driving part drives the second driving part and the sleeve to rotate.

[0016] The spraying tray is provided below with a supporting plate, an elastic member is arranged between the supporting plate and the spraying tray, the second driving part drives the rotating shaft and the scraper to press and move downwardly on the spraying tray, and the elastic member is compressed to store energy.

[0017] Further, the spraying part comprises a spraying rod arranged on the sleeve and a plurality of nozzles arranged on the spraying rod, a liquid flow channel is formed in the spraying rod, and the liquid flow channel is communicated with an external liquid storage tank.

[0018] Further, two groups of the spraying parts are arranged oppositely above and below between the receiving disc and the spraying tray, the nozzles on the spraying rod in the upper part spray downwardly, and the nozzles on the spraying rod in the lower part spray upwardly.

[0019] Further, the rotating shaft is provided with a third driving part penetrating along the radial direction of the rotating shaft, the third driving part has two oppositely arranged output shafts, the scraper includes a fixed plate and an extension plate arranged in an extension mode, and the extension plate is connected with the output shafts.

[0020] Further, the spraying tray includes a first part and at least one second part sliding up and down relative to the first part, and the shapes of the first part and the second part spliced together are adapted to the cavity.

[0021] The support plate is connected with an extension plate, and a support block is arranged between the extension plate and the second part, when the scraper extrudes the first part, the second part moves up relative to the first part, and a misaligned gap is formed between the first part and the second part, and the scraper drives the material of the first part to flow from the misaligned gap to the solidification area.

[0022] Further, the solidification assembly includes a fourth driving part connected to the bottom end of the cavity, a support frame connected to the power output end of the fourth driving part, and a heating part fixed to the inner wall of the cavity, and the heating part is provided with a plurality of air supply holes.

[0023] The heating part has an inlet communicated with an external air conditioner.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The feed additive slow-release coating device mixes and stirs the feed additive in the cavity, then makes the stirred material enter the flow-through space through the channel, and finally concentrates in the middle of the spraying tray, uniformly lays the material through the scraper, uniformly lays the material on the spraying tray, sprays the prepared coating liquid on the material through the spraying part, so that the coating is uniformly sprayed on the outside of the feed additive, and the slow-release effect is improved.

[0026] In addition, by arranging the partition plate and the spraying tray, the cavity of the cavity is divided into a mixing area, a spraying area and a solidification area arranged in sequence from top to bottom, the automatic production of the feed additive slow-release coating can be realized, and efficient production can be realized.

[0027] In addition, by arranging the second driving part to drive the scraper to move downward, the scraper extrudes the spraying tray to move downward, the elastic member is compressed and stored, when the second driving part drives the scraper to move upward, the elastic member releases energy and rebounds, the spraying tray is reset, and the arrangement can vibrate the material, so as to adjust the rotation angle of the material, so as to realize uniform spraying of the coating liquid and ensure the slow-release effect. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0029] Figure 1 A structural schematic view of the feed additive slow-release coating device according to the embodiment of the application;

[0030] Figure 2 A top view schematic view of the spraying tray according to the embodiment of the application;

[0031] Figure 3 A Figure 1 An enlarged view of a part I;

[0032] Figure 4 A schematic view of a part of the heating part according to the embodiment of the application.

[0033] Legend of reference signs:

[0034] 1, cavity; 2, premixing assembly; 3, spraying assembly; 4, solidifying assembly; 5, feeding port; 6, partition plate; 7, receiving tray; 8, flow gap; 9, second driving part; 10, support plate; 11, elastic member; 12, liquid storage tank; 13, third driving part; 14, extension plate; 15, support block; 16, inlet; 17, mounting plate;

[0035] 101, mixing area; 102, spraying area; 103, solidifying area;

[0036] 201, first driving part; 202, stirring part; 203, stirring shaft;

[0037] 301, spraying tray; 302, rotating shaft; 303, sleeve; 304, flow space; 305, fixing plate; 306, spraying part; 307, telescopic plate;

[0038] 401, fourth driving part; 402, support frame; 403, heating part; 404, air supply hole;

[0039] 601, leakage hole;

[0040] 701, protruding part; 702, base plate; 703, main flow channel; 704, branch flow channel;

[0041] 3011, first part; 3012, second part;

[0042] 3061, spraying rod; 3062, spray head. DETAILED DESCRIPTION

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0044] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] This embodiment relates to a feed additive slow-release coating device, which, as a whole, ... Figure 1 As shown, the feed additive slow-release packaging device of this embodiment includes a cavity 1 with a cavity, and a premixing component 2, a spraying component 3, and a curing component 4 arranged sequentially from top to bottom in the cavity. A feed inlet 5 is provided above the cavity 1, and a partition plate 6 arranged radially is provided inside the cavity 1. A spraying tray 301 is provided below the partition plate 6.

[0048] The partition plate 6 has several material leakage holes 601, and a receiving tray 7 for receiving materials is provided below the partition plate 6. The premixing component 2 includes a first driving unit 201 and a stirring unit 202 connected to the power output end of the first driving unit 201. The spraying component 3 includes a rotating shaft 302 connected to the stirring unit 202. A sleeve 303 is sleeved on the outside of the rotating shaft 302. A flow space 304 is provided between the sleeve 303 and the rotating shaft 302. The receiving tray 7 has a channel communicating with the flow space 304. The material flows from the flow space 304 to the top of the spraying tray 301. A scraper is connected to the bottom end of the sleeve 303. The spraying tray 301 is connected to the rotating shaft 302. When the first driving unit 201 drives the stirring unit 202 to rotate, the scraper rotates along the axis of the cavity 1 so that the scraper scrapes the material and spreads it evenly on the spraying tray 301. A spraying part 306 is provided above the sleeve 303.

[0049] The feed additive slow-release coating device of the embodiment can realize automatic production of the feed additive slow-release coating and efficient production.

[0050] Based on the above overall introduction, as shown in the embodiment of the feed additive slow-release coating device, the cavity is divided into the mixing area 101, the spraying area 102 and the curing area 103 by the partition plate 6 and the spraying tray 301. Figure 1 The first driving part 201 is connected above the cavity 1, the stirring part 202 includes the stirring shaft 203 connected to the power output end of the first driving part 201 and the stirring frame arranged on the stirring shaft 203, the stirring frame is arranged in the mixing area 101 from top to bottom, and the feeding port 5 is in communication with the mixing area 101. The sleeve 303 is fixed with the rotating shaft 302 through the mounting plate 17.

[0051] In the embodiment, the first driving part 201 is a servo motor, the first driving part 201 drives the stirring shaft 203 and the stirring frame to rotate, and the feed additive is premixed. The embodiment is provided with two feeding ports 5, the feed additive enters the mixing area 101 from the feeding port 5, the mixing effect is improved through the stirring of the stirring frame, and the material is transported to the receiving tray 7 from the leakage hole 601 on the partition plate 6.

[0052] As described above, the cavity of the cavity 1 is divided into the mixing area 101, the spraying area 102 and the curing area 103 arranged from top to bottom in sequence by the partition plate 6 and the spraying tray 301, so that the automatic production of the feed additive slow-release coating can be realized, and efficient production can be realized.

[0053] As shown in the embodiment of the feed additive slow-release coating device, the receiving tray 7 includes the bottom disc 702 and the protruding part 701 connected to the bottom disc 702, and a plurality of protruding parts 701 are arranged correspondingly to the leakage hole 601. Figure 1 The channel includes the main flow channel 703 arranged on the bottom disc 702 and the branch flow channel 704 in communication with the main flow channel 703, the branch flow channel 704 is formed in the protruding part 701, and the main flow channel 703 is in communication with the flow-through space 304. By arranging the receiving tray 7 with a plurality of protruding parts 701, a plurality of branch flow channels 704 are formed, the material flow is improved, the material can flow smoothly through the main flow channel 703 to the flow-through space 304, and the material is prevented from being blocked due to large-area accumulation.

[0054] In addition, as shown in the embodiment of the feed additive slow-release coating device, the spraying part 306 includes the spraying nozzle 305 arranged on the spraying tray 301 and the spraying pipe 307 connected to the spraying nozzle 305. Figure 1As shown in the drawings, the bottom end of the sleeve 303 is provided with a flow gap 8 between the spraying tray 301, and at least two straight blades are arranged on the sleeve 303. The material falls from the flow gap 8 to the spraying tray 301, and the material is scraped by the blades rotating with the sleeve 303.

[0055] Further, as Figure 1 shown, the sleeve 303 is fixedly connected to the rotating shaft 302, the second driving part 9 is connected to the partition plate 6, the power output end of the second driving part 9 is connected to the rotating shaft 302, the fixed end of the second driving part 9 is connected to the power output end of the first driving part 201, and the first driving part 201 drives the second driving part 9 and the sleeve 303 to rotate. The spraying tray 301 is provided below with a supporting plate 10, and the supporting plate 10 is provided with an elastic element 11 between the spraying tray 301. The second driving part 9 drives the rotating shaft 302 and the blade to press and move downwardly on the spraying tray 301, and the elastic element 11 is compressed to store energy.

[0056] In this embodiment, the second driving part 9 adopts a telescopic air cylinder, which drives the blade to move downwardly, the blade presses and moves downwardly on the spraying tray 301, and the elastic element 11 is compressed to store energy. When the second driving part 9 drives the blade to move upwardly, the elastic element 11 releases energy to rebound, the spraying tray 301 is reset, and thus the material can be vibrated to adjust the rotation angle of the material, so as to realize uniform spraying of the coating liquid and ensure the slow-release effect.

[0057] Specifically, as Figure 1 shown, the spraying part 306 includes a spraying rod 3061 arranged on the sleeve 303, and a plurality of spray heads 3062 arranged on the spraying rod 3061, and a flow channel is formed in the spraying rod 3061, and the flow channel is in communication with an external liquid storage tank 12. The spray head 3062 adopts a mist spray head 3062, the spraying pressure is 0.3-0.5 MPa, the rotation speed of the spraying tray 301 is preferably 10-30 r / min, and the slow-release time control range is 2-12 hours, which is adjusted by the coating layer.

[0058] Preferably, as Figure 1 shown, two groups of spraying parts 306 are arranged oppositely between the material receiving tray 7 and the spraying tray 301, the spray heads 3062 on the upper spraying rod 3061 spray downwardly, and the spray heads 3062 on the lower spraying rod 3061 spray upwardly. Through the relative spraying of the two groups of spray heads 3062, the coating liquid does not directly act on the material, and after the two groups of spray heads 3062 spray to form a plane, the coating liquid falls on the material, improves the uniformity of the coating liquid landing on the material, and drives the spraying tray 301 to vibrate through the second driving part 9, so that the material rotates in the falling process, or is coated by the coating liquid in the falling process, to ensure the uniformity of the spraying layer and improve the slow-release effect.

[0059] In addition, asFigure 1 and Figure 3 As shown, this embodiment also includes a third drive unit 13 that extends radially through the rotating shaft 302. The third drive unit 13 has two output shafts arranged opposite to each other. The scraper includes a fixed plate 305 and a telescopic plate 307 that are telescopically connected to the output shafts. In this embodiment, the third drive unit 13 is composed of two opposing cylinders connected together. This arrangement allows the scraper to gradually extend radially towards the inner wall of the box to meet the needs of material laying.

[0060] Preferably, such as Figure 1 and Figure 2 The spraying tray 301 includes a first part 3011 and at least one second part 3012 that slides up and down relative to the first part 3011. The shape of the first part 3011 and the second part 3012 when they are joined together is adapted to the cavity.

[0061] An extension plate 14 is connected to the support plate 10. A support block 15 is provided between the extension plate 14 and the second part 3012. When the scraper squeezes the first part 3011, the second part 3012 moves upward relative to the first part 3011, and a misalignment gap is formed between the first part 3011 and the second part 3012. The scraper drives the material of the first part 3011 to flow from the misalignment gap into the curing area 103.

[0062] like Figure 1 and Figure 4 As shown, the curing component 4 includes a fourth drive unit 401 connected to the bottom of the cavity 1, a support frame 402 connected to the power output end of the fourth drive unit 401, and a heating unit 403 fixed to the inner wall of the cavity 1. The heating unit 403 is provided with a plurality of air supply holes 404 and has an inlet 16 communicating with an external air conditioner.

[0063] like Figure 1 As shown, the fourth drive unit 401 in this embodiment adopts a servo motor, and the support frame 402 includes a rotating shaft 302 connected to the power output end of the fourth drive unit 401, and a plurality of material trays connected to the rotating shaft 302. The material trays are arranged to gradually increase in size from top to bottom to improve the uniform heating effect of material drying.

[0064] And, as Figure 1 and Figure 4 As shown, the heating section 403 is composed of multiple straight rods spliced ​​together. Each rod contains a heating chamber, which are interconnected to form a circulating heating airflow, improving the drying effect. The curing zone 103 completes the coating process by gradient heating, preferably adjusting the temperature from 40℃→60℃→room temperature.

[0065] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A feed additive slow-release coating device characterized in that: comprising a cavity (1) with a cavity, and a premixing assembly (2), a spraying assembly (3), a curing assembly (4) arranged in the cavity in turn from top to bottom; the cavity (1) is provided with a feeding port (5) above, and a partition plate (6) is arranged in the cavity (1) in the radial direction, and a spraying tray (301) is arranged below the partition plate (6); a plurality of material leakage holes (601) are arranged on the partition plate (6), and a material receiving disc (7) is arranged below the partition plate (6) for receiving material, the premixing assembly (2) comprises a first driving part (201) and a stirring part (202) connected to the power output end of the first driving part (201), the spraying assembly (3) comprises a rotating shaft (302) connected to the stirring part (202), a sleeve (303) is arranged outside the rotating shaft (302), a flow-through space (304) is arranged between the sleeve (303) and the rotating shaft (302), a channel is arranged on the material receiving disc (7) and communicates with the flow-through space (304), and material flows from the flow-through space (304) to above the spraying tray (301); the sleeve (303) is connected with a scraper at the bottom end, the spraying tray (301) is connected to the rotating shaft (302), and when the first driving part (201) drives the stirring part (202) to rotate, the scraper rotates along the axis of the cavity (1) to make the scraper scrape the material and lay it flat on the spraying tray (301), and a spraying part (306) is arranged above the sleeve (303).

2. The feed additive slow-release coating device according to claim 1, characterized in that: the partition plate (6) and the spraying tray (301) divide the cavity into a mixing area (101), a spraying area (102) and a curing area (103); the first driving part (201) is connected above the cavity (1), the stirring part (202) comprises a stirring shaft (203) connected to the power output end of the first driving part (201), and a stirring frame arranged on the stirring shaft (203), the stirring frame is arranged in the mixing area (101) from top to bottom, and the feeding port (5) communicates with the mixing area (101).

3. The feed additive slow-release coating device according to claim 2, characterized in that: the material receiving disc (7) comprises a bottom disc (702) and a protruding part (701) connected to the bottom disc (702), and a plurality of protruding parts (701) are arranged correspondingly with the material leakage holes (601); the channel comprises a main flow channel (703) arranged on the bottom disc (702) and a branch flow channel (704) communicating with the main flow channel (703), the branch flow channel (704) is formed in the protruding part (701), and the main flow channel (703) communicates with the flow-through space (304).

4. The feed additive slow-release coating device according to claim 3, characterized in that: ​ A flow gap (8) is arranged between the bottom end of the sleeve (303) and the spraying tray (301), and at least two of the scrapers are arranged in a straight line on the sleeve (303). 5.The feed additive slow-release coating device according to claim 4, characterized in that: The sleeve (303) is fixedly connected to the rotating shaft (302), the second driving part (9) is connected to the partition plate (6), the power output end of the second driving part (9) is connected to the rotating shaft (302), the fixed end of the second driving part (9) is connected to the power output end of the first driving part (201), and the first driving part (201) drives the second driving part (9) and the sleeve (303) to rotate; The spraying tray (301) is provided below with a support plate (10), and the support plate (10) and the spraying tray (301) are provided with an elastic member (11) therebetween, the second driving part (9) drives the rotating shaft (302) and the scraper to press and move downwardly on the spraying tray (301), and the elastic member (11) is compressed to store energy. 6.The feed additive slow-release coating device according to claim 5, characterized in that: The spraying part (306) comprises a spraying rod (3061) arranged on the sleeve (303) and a plurality of nozzles (3062) arranged on the spraying rod (3061), the spraying rod (3061) is formed with a flow channel therein, and the flow channel is in communication with an external liquid storage tank (12). 7.The feed additive slow-release coating device according to claim 6, characterized in that: Two groups of the spraying parts (306) are arranged oppositely above and below the receiving tray (7) and the spraying tray (301), the nozzles (3062) on the upper spraying rod (3061) spray downwardly, and the nozzles (3062) on the lower spraying rod (3061) spray upwardly. 8.The feed additive slow-release coating device according to claim 7, characterized in that: The rotating shaft (302) is provided with a third driving part (13) penetratingly arranged along the radial direction thereof, the third driving part (13) has two oppositely arranged output shafts, the scraper comprises a fixed plate (305) and an extension plate (307) arranged in an extension manner, and the extension plate (307) is connected to the output shafts. 9.The feed additive slow-release coating device according to claim 8, characterized in that: The spraying tray (301) comprises a first part (3011) and at least one second part (3012) sliding above and below the first part (3011), and the combined shape of the first part (3011) and the second part (3012) is adapted to the cavity. The support plate (10) is connected with an extension plate (14), and a support block (15) is arranged between the extension plate (14) and the second part (3012); when the scraper extrudes the first part (3011), the second part (3012) moves upward relative to the first part (3011), and a misalignment gap is formed between the first part (3011) and the second part (3012); the scraper drives the material of the first part (3011) to flow from the misalignment gap to the solidification area (103).

10. The feed additive slow-release coating device according to claim 1, characterized in that: The solidification assembly (4) comprises a fourth driving part (401) connected to the bottom end of the cavity (1), a support frame (402) connected to the power output end of the fourth driving part (401), and a heating part (403) fixed to the inner wall of the cavity (1), wherein a plurality of air supply holes (404) are arranged on the heating part (403). The heating part (403) has an inlet (16) in communication with an external air conditioner.