Film coating device for compound fertilizer production
By designing a coating device for compound fertilizer production with an arc-shaped heater and a linkage mechanism, the problem of poor heating uniformity was solved, achieving centralized external heating and efficient coating, thus improving heating efficiency and process adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-06
AI Technical Summary
Existing compound fertilizer coating devices suffer from poor heating uniformity and cannot achieve centralized external heating, resulting in insufficient process adaptability and difficult maintenance.
A coating device for compound fertilizer production was designed, which adopts an arc heater and a linkage mechanism. The coating barrel can reciprocate and swing. The heating and swinging motion are achieved by motor drive. A heater is set at the bottom of the coating barrel to achieve centralized external heating and efficient heating.
It achieves high heating efficiency, can be controlled and maintained at any time, and has a concentrated heating area, which solves the problem of poor heating uniformity and improves the coating effect.
Smart Images

Figure CN223974025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compound fertilizer coating technology, and in particular to a coating device for compound fertilizer production. Background Technology
[0002] Coating technology, as one of the core processes for achieving slow-release fertilizers, effectively regulates the nutrient release rate, improves fertilizer utilization, and reduces environmental pollution by forming a uniform coating layer on the surface of fertilizer granules. Currently, common coating devices mostly employ rotary drums or fluidized bed equipment, using sprayed coating materials and curing them with hot air or natural drying. However, existing technologies still suffer from problems in practical applications: poor heating uniformity, the need for full-tank heating, insufficient process adaptability leading to difficulties in heating control and maintenance.
[0003] This solution proposes a coating device for compound fertilizer production that can be externally heated. By innovatively designing a synergistic structure between the heating module and the coating process, it aims to solve the technical problem that traditional technologies cannot perform centralized external heating. Utility Model Content
[0004] The main purpose of this utility model is to provide a coating device for compound fertilizer production, which aims to solve the technical problems of poor heating uniformity and inability to heat externally in the prior art.
[0005] To achieve the above objectives, this utility model provides a coating device for compound fertilizer production, including a coating tank, with a heater located below the coating tank, the heater being arc-shaped;
[0006] The film-coating bucket is positioned above the heater and can swing back and forth.
[0007] The coating barrel is provided with a barrel shaft on one side, and the barrel shaft realizes heating and reciprocating swing coating through a linkage mechanism.
[0008] Furthermore, the linkage mechanism includes a connecting rod, one end of which is rotatably mounted on a crank; the other end of which is rotatably mounted on a rocker arm.
[0009] Furthermore, the crank is fitted into one end of the motor shaft, and the other end of the motor shaft is mounted on the motor via a coupling.
[0010] Furthermore, the rocker arm is embedded in the barrel shaft, and the barrel shaft is detachably installed on the coated barrel by bolts.
[0011] Furthermore, the crank, connecting rod, and rocker are adapted to each other, that is, they mutually satisfy the rod length condition. When the crank makes a circular motion, it can drive the rocker to make a swinging motion without jamming.
[0012] Furthermore, both the motor shaft and the barrel shaft are rotatably mounted on the bracket, and the bracket is detachably mounted on the platform by bolts.
[0013] Furthermore, the coated barrel is provided with at least two raised rings;
[0014] The film-coated bucket is rotatably mounted on a roller via a convex ring;
[0015] The coated barrel is fitted with a lid.
[0016] Furthermore, the heater is equipped with a heating tube adapted to the film-coating barrel.
[0017] Furthermore, the platform is fixed to the rollers by support legs.
[0018] The beneficial effects of this utility model are reflected in:
[0019] In this invention, an arc-shaped heater is installed below the coating tank to heat the interior, and can be controlled and maintained as needed.
[0020] The coating bucket oscillates during coating and only heats the coated area during heating, resulting in high heating efficiency. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a front view of the rocker mechanism of this utility model;
[0023] Figure 3 This is a perspective view of the rocker mechanism of this utility model;
[0024] Figure 4 for Figure 1 Rear view;
[0025] Figure 5 This is a schematic diagram of the heating component structure of this utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Coating drum, 2. Motor, 3. Heater, 4. Roller, 5. Convex ring, 6. Crank, 7. Connecting rod, 8. Rocker arm, 9. Motor shaft, 10. Drum shaft, 11. Platform, 12. Bracket, 13. Drum lid, 14. Heating tube. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.
[0031] See Figures 1 to 5 The present invention relates to a coating device for compound fertilizer production, comprising a coating tank 1, wherein a heater 3 is provided below the coating tank 1, and the heater 3 is arc-shaped;
[0032] The film-coating bucket 1 is positioned above the heater 3 and can swing back and forth.
[0033] The film-coating barrel 1 is provided with a barrel shaft 10 on one side, and the barrel shaft 10 realizes heating and reciprocating swinging film coating through a linkage mechanism.
[0034] Working principle
[0035] When coating compound fertilizer, open the bucket lid, put the compound fertilizer to be coated into the bucket, and then start the motor to drive the coating bucket to swing axially in a circular motion to perform the coating.
[0036] If heating is required, simply turn on the heater to begin heating.
[0037] An arc-shaped heater is installed below the coating tank to heat the interior, and it can be controlled and maintained as needed.
[0038] The coating bucket oscillates during coating and only heats the coated area during heating, resulting in high heating efficiency.
[0039] In some embodiments, see Figure 2 and 3 As shown, the linkage mechanism includes a connecting rod 7, one end of which is rotatably mounted on a crank 6; the other end of which is rotatably mounted on a rocker arm 8.
[0040] In some embodiments, see Figure 3 As shown, the crank 6 is embedded in one end of the motor shaft 9, and the other end of the motor shaft 9 is mounted on the motor 2 via a coupling.
[0041] In some embodiments, see Figure 3 As shown, the rocker arm 8 is embedded in the barrel shaft 10, and the barrel shaft 10 is detachably installed on the film-coated barrel 1 by bolts.
[0042] In some embodiments, see Figure 2 As shown, the crank 6, connecting rod 7, and rocker 8 are adapted to each other, that is, they all meet the rod length requirements. When the crank 6 makes a circular motion, it can drive the rocker 8 to make a rocking motion without jamming.
[0043] In some embodiments, see Figure 1 and 2 As shown, the motor shaft 9 and the barrel shaft 10 are rotatably mounted on the bracket 12, and the bracket 12 is detachably mounted on the platform 11 by bolts.
[0044] In some embodiments, see Figure 1 As shown, the film-coated barrel 1 is provided with at least two raised rings 5;
[0045] The film-coated bucket 1 is rotatably mounted on the roller 4 via the convex ring 5;
[0046] The coated barrel 1 is equipped with a barrel lid 13.
[0047] In some embodiments, see Figure 5 As shown, the heater 3 is equipped with a heating tube 14 that is compatible with the film-coating barrel 1.
[0048] In some embodiments, see Figure 1 As shown in Figure 2, the platform 11 is fixed to the roller 4 by means of support legs.
[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coating device for compound fertilizer production, comprising a coating barrel (1), a heater (3) is arranged below the coating barrel (1), characterized in that The heater (3) is arc-shaped. The film coating barrel (1) is reciprocally and swingably arranged above the heater (3). The film coating barrel (1) is provided with a barrel shaft (10) on one side, and the barrel shaft (10) realizes heating and reciprocally and swingably coating film through a connecting rod mechanism.
2. The coating device for compound fertilizer production according to claim 1, characterized in that, The connecting rod mechanism comprises a connecting rod (7), one end of which is rotatably mounted on a crank (6), and the other end of which is rotatably mounted on a rocker (8).
3. The coating device for compound fertilizer production according to claim 2, characterized in that, The crank (6) is embedded in one end of a motor shaft (9), and the other end of the motor shaft (9) is mounted on a motor (2) through a shaft coupling.
4. The coating device for compound fertilizer production according to claim 2, characterized in that, The rocker (8) is embedded in a barrel shaft (10), and the barrel shaft (10) is detachably mounted on the film coating barrel (1) through bolts.
5. The coating device for compound fertilizer production according to claim 4, characterized in that, The crank (6), the connecting rod (7) and the rocker (8) are adaptively used, that is, they satisfy the rod length condition, when the crank (6) does circular motion, it can drive the rocker (8) to do swing motion without being stuck.
6. The coating device for compound fertilizer production according to claim 3, characterized in that, The motor shaft (9) and the barrel shaft (10) are rotatably mounted on a bracket (12), and the bracket (12) is detachably mounted on a table plate (11) through bolts.
7. The coating device for compound fertilizer production according to claim 4, characterized in that, The film coating barrel (1) is provided with at least two convex rings (5). The film coating barrel (1) is rollably mounted on the roller (4) through the convex ring (5). The film coating barrel (1) is provided with a barrel cover (13).
8. The coating device for compound fertilizer production according to claim 1, characterized in that, The heater (3) is provided with a heating pipe (14) adapted to the film coating barrel (1).
9. The coating device for compound fertilizer production according to claim 6, characterized in that, The table plate (11) is fixed on the roller (4) through a supporting leg.