Film coating machine for compound fertilizer

Abstract

The utility model discloses a coating machine for compound fertilizer. The coating machine comprises a base, a supporting plate, a coating roller, a rotating shaft, a first motor, an atomizing system, an atomizing nozzle, a stirring rod, a row brush, a feeding hopper, a receiving box and a second motor. Atomizing holes are uniformly distributed in the spherical surface of the atomizing nozzle, and sprayed atomized liquid drops cover the interior of the film coating roller by 360 degrees; a row brush and a stirring rod are arranged, so that particles on the inner wall of the film coating roller are scraped and brushed away, and particle deposition or blockage is prevented; particles at the bottom of the coating roller are dispersed and stirred, so that each particle is convenient to wet; the atomizing system is adopted to generate atomized liquid drops of a coating agent, the atomized liquid drops are sprayed into the coating roller through the atomizing nozzle, the atomized liquid drops of the coating agent rapidly wet the surfaces of fertilizer particles, and coating of the atomized coating agent on the fertilizer particles is achieved. According to the utility model, the problem of non-uniform film coating caused by deposition, agglomeration or caking of fertilizer particles is solved, and the purposes of uniform film coating and improvement of film coating quality are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compound fertilizer production, in particular to a coating machine for compound fertilizer. Background Art

[0002] Compound fertilizer refers to fertilizer made by chemical method and / or blending method with specified amount of at least two nutrients among N, P and K. In the production and processing of compound fertilizer, in order to effectively prevent fertilizer agglomeration, salt bridge effect and moisture absorption on the fertilizer surface, a film is often coated on the surface of fertilizer particles. The purpose of coating is to slowly release the quick-acting nutrients in the coated fertilizer after it is applied to the soil to prolong the fertilizer effect. Therefore, a fertilizer coating machine is derived.

[0003] For example, a Chinese patent with announcement number CN 116063131 B discloses a particle coating machine for compound fertilizer production, including a coating machine, a liquid storage tank, a spraying structure, a driving structure, a lubricating structure, a stirring structure and a swinging structure. The setting of the stirring structure facilitates the mixing of the materials required for the coating raw materials with water more evenly, thereby achieving a better coating effect of the compound fertilizer. The setting of the spraying structure facilitates the spraying of the coating raw materials onto the compound fertilizer, thereby avoiding agglomeration of the compound fertilizer, improving practicality, and improving the spraying efficiency. The stirring structure causes the spraying structure to swing back and forth while stirring, thereby making the spraying range of the spraying structure wider, thereby making the coating raw materials sprayed on the compound fertilizer more evenly. The driving structure drives the coating machine to rotate while driving the lubricating structure to automatically oil the gears, thereby avoiding jamming between the gears and the coating machine and improving the rotation smoothness between the gears and the coating machine.

[0004] For example, a Chinese patent with announcement number CN 220432677 U discloses a fertilizer coating machine, which includes a drum body rotatably supported by a base roller, a spray pipe for spraying coating raw materials is arranged in the drum body, a plurality of spiral blades are arranged in the spraying drum body, a material stopper is arranged inside the drum body, and a scraper block fixed on the spray pipe is arranged on the material blocking side of the material stopper. By arranging a detachable material stopper inside the drum body of the coating machine, the mixing time of materials in the drum body is extended, thus ensuring the uniformity of mixing of compound fertilizer particles and coating liquid, and greatly improving the quality of compound fertilizer particles; a scraper block is arranged on the material stopper, and the scraper block removes the materials gathered on the side of the material stopper, reduces the gathering of materials on the side of the annular material stopper plate, and improves the material blocking effect of the annular material stopper plate.

[0005] The above inventions all use a spraying structure to spray the coating liquid into the rotating drum to mix with the fertilizer particles, so as to promote a coating on the surface of the fertilizer particles. However, during the spraying process, the coating liquid finally falls to the bottom of the rotating drum due to gravity, and is easy to form sediments at the bottom of the rotating drum, which will cause the fertilizer particles to agglomerate or agglomerate, and then cause the problem of uneven coating, affecting the coating quality. Summary of the invention

[0006] The utility model aims to solve the deficiencies of the prior art and provide a coating machine for compound fertilizer.

[0007] In order to achieve the above object, the utility model provides the following technical solutions:

[0008] A coating machine for compound fertilizer comprises a base, a support plate, a coating roller, a rotating shaft, a first motor, an atomizing system, an atomizing nozzle, a stirring rod, a row brush, a feeding hopper, a material receiving box and a second motor.

[0009] The base is welded into a rectangular base by 4 pipes in the horizontal direction, and 2 horizontal mounting plates are welded inside the base, and a vertical support plate is welded and installed on the horizontal mounting plates; a rotating gear is inlaid on the top of the support plate, and the rotating gear is rotatably connected to the coating drum; the coating drum is a hollow cylinder that is inclined downward at a certain angle to the horizontal direction, and a rotating shaft is connected at the top and bottom axis of the coating drum, and the rotating shaft is a hollow round rod, which is rotatably connected to the top or bottom of the coating drum, and the rotating shaft passes upward through the top axis of the coating drum and extends to the first motor, and the first motor is arranged on the mounting plate on the left side of the base, and the mounting plate is welded and fixed to the base, and a sleeve is put on the rotating shaft and connected to the driving shaft of the first motor through The belt is connected and driven, and a connecting pipe leading to the atomization system is arranged at the connection between the rotating shaft and the bottom axis of the coating drum; a plurality of layers of atomizing nozzles are evenly distributed along the axial direction at equal distances on the rotating shaft, and the atomizing nozzles are hemispherical nozzles, and atomizing holes are evenly distributed on the atomizing nozzles; a plurality of layers of stirring rods are arranged along the axial direction from high to low on the rotating shaft, and the radial inner ends of the stirring rods are integrally formed into a circular sleeve and are fixedly connected with the rotating shaft by bite; the radial outer ends of the stirring rods are connected to a row of brushes, and the row of brushes are toothbrush-like multi-row soft-bristle brushes, and the row of brushes are parallel to the direction of the rotating shaft; a feed port is provided at the lower end of the top of the coating drum, and the feed port is connected to the feed hopper; a discharge port is provided at the lower end of the bottom of the coating drum, and the discharge port is connected to the material receiving box; a second motor is arranged in the middle of the base.

[0010] Preferably, the output end of the second motor is fixedly connected to a driving gear, and the coating roller is fixedly mounted with a gear ring meshing with the driving gear.

[0011] By adopting the above technical solution, the second motor is started, and the driving gear starts to rotate, thereby driving the gear ring meshing with it to rotate, thereby driving the coating drum to rotate.

[0012] Preferably, the multi-layer stirring rods and the multi-layer atomizing nozzles are arranged at intervals on the rotating shaft.

[0013] Preferably, the number of stirring rods in each layer of stirring rods is 4, 6 or 8, and they are evenly distributed in the layer with the center of the rotation axis as the center.

[0014] Preferably, atomizing holes are evenly distributed on the hemispherical surface of each layer of atomizing nozzles, and an atomizing nozzle is arranged on the upper and lower sides of each layer.

[0015] By adopting the above technical solution, the mist droplets sprayed from each layer of atomizing nozzles cover the inside of the coating drum 360°, which can well wet and coat the compound fertilizer particles.

[0016] Preferably, the bristles of the row of brushes are in close contact with the inner wall of the coating drum, and the bristles of the row of brushes cover the inner wall of the coating drum in the axial direction of the rotating shaft.

[0017] By adopting the above technical scheme, the bristles of the brush can not only scrape off the particles on the inner wall of the coating drum to prevent particle deposition or blockage on the inner wall of the coating drum, especially on the bottom; but also disperse and stir the particles on the bottom of the coating drum, so that the mist droplets can better wet each particle, thereby achieving uniform coating and improving the coating quality.

[0018] Preferably, a liquid coating agent may be placed in the atomization system.

[0019] By adopting the above technical scheme, mist droplets of the coating agent can be generated in the atomization system and sprayed inside the coating drum through the atomizing nozzle. The surface energy of the mist coating agent droplets is relatively high. After being adsorbed on the surface of the fertilizer particles, the mist coating agent droplets quickly wet the surface of the fertilizer particles under the surface tension and capillary force, thereby achieving the coating of the fertilizer particles by the mist coating agent.

[0020] The beneficial effects of the utility model are:

[0021] 1. An atomizing nozzle with atomizing holes evenly distributed on the spherical surface is set up, and the sprayed mist droplets cover the inside of the coating drum 360°, which can well realize the wetting process of compound fertilizer particles;

[0022] 2. A row of brushes and a stirring rod are provided, and the bristles of the row of brushes cover the inner wall of the coating drum, which can not only scrape off the particles on the inner wall of the coating drum to prevent particle deposition or blockage on the inner wall of the coating drum, especially on the bottom; but also disperse and stir the particles on the bottom of the coating drum, so that the mist droplets can better wet each particle, thereby achieving uniform coating and improving the coating quality.

[0023] 3. The atomization system is used to generate mist droplets of the coating agent, which are sprayed inside the coating drum through the atomizing nozzle. The surface energy of the mist coating agent droplets is relatively high. After being adsorbed on the surface of the fertilizer particles, the mist coating agent droplets quickly wet the surface of the fertilizer particles under the surface tension and capillary force, thereby achieving the coating of the fertilizer particles by the mist coating agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 The utility model is a structural schematic diagram of a compound fertilizer coating machine.

[0027] Figure 1 Shown in: 1. base, 2. support plate, 3. coating roller, 4. rotating shaft, 5. first motor, 6. atomization system, 7. atomization nozzle, 8. stirring rod, 9. row brush, 10. feed hopper, 11. receiving box, 12. second motor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0031] It should be noted that similar reference numerals and letters tend to denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference Figure 1The utility model discloses a coating machine for compound fertilizer, comprising a base 1, a support plate 2, a coating roller 3, a rotating shaft 4, a first motor 5, an atomizing system 6, an atomizing nozzle 7, a stirring rod 8, a row brush 9, a feeding hopper 10, a material receiving box 11, and a second motor 12.

[0035] The base 1 is a rectangular tubular base for supporting the coating machine; feet and anti-slip pads are arranged at the bottom of the base 1, a support plate 2 is vertically installed at the bottom of the base 1, a rotating gear is embedded on the top of the support plate 2, and the rotating gear is rotatably connected to the coating roller 3, and a second motor 12 is arranged at the bottom center of the base 1, and a driving gear fixedly connected to the output end of the second motor 12 is meshed with a gear ring fixedly installed on the coating roller 3 to drive the coating roller 3 to rotate.

[0036] The top and bottom axes of the coating drum 3 are rotatably connected to the hollow round rod rotating shaft 4, the first motor 5 is arranged on the mounting plate welded on the left side of the base 1, the sleeve on the rotating shaft 4 is connected and driven by the driving shaft of the first motor 5 through a belt, and a connecting pipe is arranged at the axis connection of the bottom of the coating drum 3 to lead to the atomization system 6; several layers of atomizing nozzles 7 and stirring rods 8 are evenly distributed at equal distances on the rotating shaft 4 along the axial direction, and atomizing holes are evenly distributed on the spherical surface of the hemispherical atomizing nozzle 7; the radial outer end of the stirring rod 8 is connected to a toothbrush-shaped soft-bristle brush 9, the brush 9 is parallel to the direction of the rotating shaft 4, and covers the inner wall of the coating drum 3; the feed hopper 10 is connected to the feed port at the lower end of the top of the coating drum 3; the material receiving box 11 is connected to the discharge port at the lower end of the bottom of the coating drum 3.

[0037] In an optional embodiment, the rotating shaft 4, the atomizing nozzle 7, the stirring rod 8, and the row brush 9 are all symmetrically arranged with the central axis direction of the coating drum 3 as the center.

[0038] By adopting the above technical solution, the main components of the coating machine can form a uniformly distributed structure, with the center and the center of gravity located on the same central axis.

[0039] In an optional embodiment, two feed ports are provided in the feed hopper 10, one of which is the compound fertilizer feed port, and the other is the solid coating agent feed port. The compound fertilizer and the solid coating agent are dispersed, stirred and mixed at the top of the coating drum 3, and uniform coating is well achieved under the wetting effect of the mist droplets.

[0040] Example 1

[0041] Take the working process of the coating machine as an example to illustrate its working principle and process.

[0042] Start the first motor 5, the second motor 12 and the atomizing system 6. The driving shaft of the first motor 5 rotates and drives the rotating shaft 4 to rotate, thereby driving the atomizing nozzle 7, the stirring rod 8 and the row brush 9 to rotate in the same direction. The driving gear of the second motor 12 rotates and drives the gear ring meshing therewith to rotate, thereby driving the coating drum 3 to rotate. The rotating shaft 4 rotates in the same direction as the coating drum 3. After the atomizing system 6 works, the mist droplets are sprayed into the coating drum 3 through the pipeline, the hollow round rod rotating shaft 4 and the atomizing nozzle 7 in sequence. The compound fertilizer particles enter the coating drum 3 from the feed hopper 10 through the feed port, and are dispersed under the dispersion and stirring action of the bristles of the row brush 9. At the same time, the mist droplets adhere to the surface of the compound fertilizer particles, and the mist droplets quickly wet the surface of the compound fertilizer particles under the surface tension and capillary force. With the rotation of the coating drum 3, the row brush 9 and the stirring rod 8, the mist droplets wet and coat the fully dispersed compound fertilizer particles, and enter the receiving box 11 from the discharge port, and the coating process is completed.

[0043] Example 2

[0044] Except that the rotating shaft 4 and the coating drum 3 rotate in opposite directions, the rest is the same as the first embodiment.

[0045] Of course, the embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A compound fertilizer coating machine, characterized in that: It comprises a base (1), a support plate (2), a coating roller (3), a rotating shaft (4), a first motor (5), an atomizing system (6), an atomizing nozzle (7), a stirring rod (8), a brush (9), a feed hopper (10), a material receiving box (11), and a second motor (12); The base (1) is welded horizontally from four pipes to form a rectangular base, two transverse mounting plates are welded inside the base, and a vertical support plate (2) is welded and mounted on the transverse mounting plates; a rotating gear is embedded on the top of the support plate (2), and the rotating gear is rotatably connected to the coating roller (3); the coating roller (3) is a hollow cylinder that is tilted downward at a certain angle to the horizontal direction, and a rotating shaft (4) is connected to the top and bottom axis of the coating roller (3), and the rotating shaft (4) is a hollow round rod. The rotating shaft (4) is rotatably connected to the top or bottom of the coating roller (3), and the rotating shaft (4) passes through the top axis of the coating roller (3) and extends to the first motor (5). The first motor (5) is arranged on the mounting plate on the left side of the base (1), and the mounting plate is welded and fixed on the base (1). The sleeve on the rotating shaft (4) is connected and driven by the driving shaft of the first motor (5) through a belt. A connecting pipe leading to the atomization system (6) is arranged at the connection point between the rotating shaft (4) and the bottom axis of the coating drum (3); a plurality of layers of atomization nozzles (7) are evenly distributed along the axial direction at equal distances on the rotating shaft (4); the atomization nozzles (7) are hemispherical nozzles, and atomization holes are evenly distributed on the atomization nozzles (7); a plurality of layers of stirring rods (8) are arranged along the axial direction from high to low on the rotating shaft (4); the radial inner ends of the stirring rods (8) are integrally formed into a circular sleeve and connected to the rotating shaft (4); The rotating shaft (4) is fixedly connected by bite; the radial outer end of the stirring rod (8) is connected to a row of brushes (9), and the row of brushes (9) is a toothbrush-like multi-row soft-bristle brush, and the row of brushes (9) is parallel to the direction of the rotating shaft (4); a feed port is provided at the lower end of the top of the coating roller (3), and the feed port is connected to the feed hopper (10); a discharge port is provided at the lower end of the bottom of the coating roller (3), and the discharge port is connected to the receiving box (11); a second motor (12) is arranged in the middle of the upper part of the base (1).

2. The compound fertilizer coating machine according to claim 1, characterized in that: The output end of the second motor (12) is fixedly connected to a driving gear, and the coating roller (3) is fixedly mounted with a gear ring meshing with the driving gear.

3. The compound fertilizer coating machine according to claim 1, characterized in that: The multi-layer stirring rod (8) and the multi-layer atomizing nozzle are arranged at intervals on the rotating shaft (4).

4. The compound fertilizer coating machine according to claim 1, characterized in that: The number of stirring rods (8) in each layer is 4, 6 or 8, and they are evenly distributed within the layer with the center of the rotating shaft (4) as the center.

5. The compound fertilizer coating machine according to claim 1, characterized in that: Atomizing holes are evenly distributed on the hemispherical surface of each layer of atomizing nozzles (7), and one atomizing nozzle (7) is arranged on the upper and lower sides of each layer.

6. The compound fertilizer coating machine according to claim 1, characterized in that: The bristles of the row of brushes (9) are tightly fitted to the inner wall of the coating roller (3), and in the axial direction of the rotating shaft (4), the bristles of the row of brushes (9) cover the inner wall of the coating roller (3).

7. The compound fertilizer coating machine according to claim 1, characterized in that: A liquid coating agent may be placed in the atomization system (6).

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