Coating machine system

Abstract

The invention discloses a coating system. The coating system comprises a coating mechanism and a ventilation mechanism, the coating mechanism comprises a coating machine and a coating assembly detachably connected with the coating machine, and one end of the coating assembly is driven by the coating machine; the coating machine comprises a machine body, a driving part arranged outside the machine body and a spray gun arranged in the machine body, the driving part drives the coating assembly to rotate in the coating machine, coating liquid is sprayed to pellets or tablets in the coating assembly through the spray gun, and the pellets or tablets are dried through the ventilation mechanism. The driving part drives the coating assembly to rotate in the coating machine, coating liquid is sprayed to pellets or tablets in the coating assembly at the same time, the ventilation mechanism is used for drying to replace a fluidized bed coating mode, the pellets or tablets are evenly distributed in the rotating coating assembly, the probability of uneven coating is reduced, the coating efficiency is improved, and the coating efficiency is improved. And the coating time is shortened, so that the energy consumption is reduced. Meanwhile, the coating assemblies which are detachably connected can be replaced with coating assemblies of different specifications, so that the universality is improved.

Description

Technical Field

[0001] The present invention relates to the field of pharmaceuticals, and particularly to a coating system. Background Art

[0002] Coating machines were initially mainly used in the pharmaceutical industry to coat drugs with sugar coatings to improve the taste and appearance of drugs and enhance the stability of drugs. Early coating equipment was relatively simple, such as traditional water chestnut-shaped coating pans, which mainly relied on manual operation. Drug particles were put into the coating pan, and the coating process was completed by the rotation of the pan body and manual addition of coating materials. With the progress of technology, coating machines have gradually shifted from manual operation to semi-automatic and fully automatic directions.

[0003] Currently, pellets are mainly coated by fluidized bed coating, which mainly consists of an air distribution plate, a fluidized bed chamber, a spray gun system, a feeding system, a heating and ventilation system, etc. During operation, air that has been filtered, heated, and humidity-adjusted enters the fluidized bed chamber evenly through the air distribution plate. When the air flow rate reaches a certain level, the material particles are blown up by the air flow and are in a suspended state, forming a fluidized state similar to liquid boiling. At this time, the material particles can freely move up and down and mix in the bed, making full contact with the surrounding gas, providing good conditions for the uniform spraying and drying of the coating liquid.

[0004] However, fluidized bed coating requires the material to have a certain particle size distribution range. Uneven particle size distribution may affect the fluidization effect of the material, resulting in uneven coating. At the same time, the coating time of the fluidized bed coating method is too long and the energy consumption is high. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a coating system, aiming to solve the problems that current fluidized bed coating requires the material to have a certain particle size distribution range, uneven particle size distribution may affect the fluidization effect of the material, resulting in uneven coating, and at the same time, the coating time of the fluidized bed coating method is too long and the energy consumption is high.

[0006] To achieve the above purpose, the present invention is realized through the following technical solutions: A coating system, the coating system includes a coating mechanism and a ventilation mechanism communicated with the coating mechanism;

[0007] The coating mechanism includes a coating machine and a coating component detachably connected to the coating machine, and one end of the coating component is driven by the coating machine;

[0008] The coating machine includes a machine body, a driving member provided outside the machine body, and a spray gun provided inside the machine body;

[0009] Wherein, the driving member drives the coating assembly to rotate within the coating machine, sprays coating liquid onto the pellets or tablets within the coating assembly through a spray gun, and dries the coating through the ventilation mechanism.

[0010] In summary, according to a coating system provided by the present invention, a driving member drives a coating assembly to rotate within a coating machine, while spraying coating liquid onto the pellets or tablets within the coating assembly and drying the coating through a ventilation mechanism, so as to replace the fluidized bed coating method. The pellets or tablets are evenly distributed within the rotating coating assembly, reducing the probability of uneven coating, improving the coating efficiency, shortening the coating time, and thus reducing the energy consumption. At the same time, the detachable coating assembly can also improve the versatility by replacing coating assemblies of different specifications. Specifically, the coating mechanism includes a coating machine and a coating assembly detachably connected to the coating machine. One end of the coating assembly is driven by the coating machine; the coating machine includes a machine body, a driving member provided outside the machine body, and a spray gun provided inside the machine body; the driving member drives the coating assembly to rotate within the coating machine, sprays coating liquid onto the pellets or tablets within the coating assembly through the spray gun, and dries the coating through the ventilation mechanism.

[0011] According to one aspect of the above technical solution, the coating assembly includes a housing, a driving shaft respectively provided at one end of the housing, and a plurality of blades provided inside the housing, and the driving shaft is connected to the driving member.

[0012] According to one aspect of the above technical solution, the housing includes a mesh plate, a front conical barrel and a rear conical barrel respectively provided at both ends of the mesh plate, and the rear conical barrel is provided on one side of the mesh plate close to the driving shaft.

[0013] According to one aspect of the above technical solution, the mesh plate includes a plurality of wedge-shaped mesh strips arranged parallel to the driving shaft, and an annular hoop provided outside the wedge-shaped mesh strips. The wedge-shaped mesh strips are arranged along the circumference of the front conical barrel or the rear conical barrel to enclose a coating space;

[0014] A ventilation space is left between adjacent wedge-shaped mesh strips, and the size of the ventilation space is not greater than the size of the pellets or tablets.

[0015] According to one aspect of the above technical solution, the blades include a plurality of stirring blades provided on the inner wall of the mesh plate and a plurality of discharging blades provided on the inner wall of the front conical barrel, and both the stirring blades and the discharging blades are inclined and provided inside the housing.

[0016] According to one aspect of the above technical solution, the stirring blade includes a connecting member fixedly connected to the inner wall of the front conical barrel and / or the rear conical barrel, and a stirring piece perpendicular to the inner wall of the mesh plate, and the stirring piece is attached to the inner wall of the mesh plate.

[0017] According to one aspect of the above technical solution, the discharge paddle includes a first guiding paddle perpendicular to the inner wall of the front conical barrel and the inner wall of the mesh plate, and a second guiding paddle disposed at the mouth of the front conical barrel, and a guiding angle is provided between the second guiding paddle and the first guiding paddle.

[0018] According to one aspect of the above technical solution, the first guiding paddle is an L-shaped bracket.

[0019] According to one aspect of the above technical solution, the ventilation mechanism includes an air inlet member and an air outlet member both communicating with the coating machine, and the air inlet member is used to supply hot air to the coating assembly.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a coating system in an embodiment of the present invention;

[0022] Figure 2 It is an assembly schematic diagram of a coating machine and a coating assembly in an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a coating machine in an embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a coating assembly in an embodiment of the present invention;

[0025] Figure 5 It is a top view of a coating assembly in an embodiment of the present invention;

[0026] Figure 6 It is a working schematic diagram of a spray gun in an embodiment of the present invention;

[0027] Figure 7 It is a schematic structural diagram of a mesh plate in an embodiment of the present invention;

[0028] Figure 8 It is an arrangement schematic diagram of wedge-shaped mesh strips in an embodiment of the present invention;

[0029] Figure 9 It is a schematic structural diagram of a stirring paddle in an embodiment of the present invention;

[0030] Figure 10 It is a schematic structural diagram of a discharge paddle in an embodiment of the present invention.

[0031] Explanation of the symbols of the components in the drawings:

[0032] Coating mechanism 100, coating machine 110, machine body 111, driving part 112, spray gun 113, coating assembly 120, housing 121, front conical barrel 1211, rear conical barrel 1212, mesh plate 1213, wedge-shaped mesh strip 1214, annular hoop 1215, driving shaft 122, stirring paddle 123, connecting piece 1231, stirring blade 1232, discharging paddle 124, first guiding paddle 1241, second guiding paddle 1242, ventilation mechanism 200, air inlet part 210, air exhaust part 220, stirring barrel 300, cleaning machine 400, mobile trolley 500, pellets or core tablets 600. Detailed implementation manners

[0033] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixedly arranged on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Please refer to Figures 1-10 , which shows a schematic structural diagram of a coating system provided in an embodiment of the invention. The coating system includes a coating mechanism 100 and a ventilation mechanism 200 communicated with the coating mechanism 100, wherein:

[0037] To replace the fluidized bed coating method, the coating mechanism 100 includes a coating machine 110 and a coating assembly 120 detachably connected to the coating machine 110. One end of the coating assembly 120 is driven by the coating machine 110. In order to be able to simultaneously achieve the functions of tablet coating and pellet coating by using the coating machine 110, the coating assembly 120 can be transported and replaced by a moving trolley 500. In this embodiment, the coating assembly 120 is assembled in the inner cavity of the coating machine 110. By replacing the coating assembly 120 in the same coating machine 110, different products can be coated to improve the versatility of this coating system.

[0038] Furthermore, the coating machine 110 further includes a machine body 111, a driving member 112 provided outside the machine body 111, and a spray gun 113 provided inside the machine body 111. The driving member 112 and the spray gun 113 are relatively arranged on both sides of the machine body 111. When the coating assembly 120 is assembled in the inner cavity of the coating machine 110, the driving member 112 can drive the coating assembly 120 to rotate inside the machine body 111, thereby realizing the coating function. At the same time, while the coating assembly 120 is rotating, the spray gun 113 is used to atomize the coating liquid and spray it onto the pellets or tablets 600 inside the rotating coating assembly 120, so that the outside of the pellets or tablets 600 is evenly coated with the coating liquid. It should be noted that a stirring barrel 300 is also provided outside the coating machine 110. The coating liquid in the stirring barrel 300 can be transported to the spray gun 113 through a peristaltic pump, and then the coating liquid is sprayed onto the pellets or tablets 600.

[0039] Due to the rotation of the coating assembly 120 plus the spraying of the coating liquid by the spray gun 113, in order to improve the coating efficiency, the ventilation mechanism 200 includes an air inlet member 210 and an air outlet member 220 both connected to the coating machine 110. The air inlet member 210 and the air outlet member 220 are both connected to the inside of the machine body 111 through pipes. The air inlet member 210 is used to pass hot air to the coating assembly 120. After the coating liquid is evenly sprayed onto the surface of the pellets or tablets 600, in cooperation with the hot air introduced into the machine body 111 by the air inlet member 210, the pellets or tablets 600 are dried. The coating liquid is wrapped on the surface of the pellets or tablets 600, and after drying, a coating layer is formed to wrap the pellets or tablets 600, and finally the coating process is completed.

[0040] In order to efficiently complete the coating process, the coating assembly 120 includes a housing 121, a drive shaft 122 provided at one end of the housing 121, and a plurality of blades provided inside the housing 121. The drive shaft 122 is connected to the driving member 112. When the coating assembly 120 is assembled in the machine body 111 along the axial direction of the drive shaft 122, the drive shaft 122 is connected to the driving member 112 and rotates clockwise or counterclockwise by the power provided by the driving member 112, and cooperates with the spray gun 113 to coat the pellets or tablets 600.

[0041] It should be noted that the housing 121 includes a mesh plate 1213, a front conical barrel 1211 and a rear conical barrel 1212 respectively provided at both ends of the mesh plate 1213. The rear conical barrel 1212 is provided on the side of the mesh plate 1213 close to the drive shaft 122. The front conical barrel 1211, the mesh plate 1213 and the rear conical barrel 1212 are fixedly connected, and the connection methods include but are not limited to welding, screwing, etc., so that the front conical barrel 1211, the mesh plate 1213 and the rear conical barrel 1212 rotate synchronously. In addition, one end of the drive shaft 122 away from the drive member 112 is also fixedly connected to the rear conical barrel 1212 to drive the overall rotation of the housing 121.

[0042] Furthermore, in order to facilitate ventilation and drying of the pellets or tablets 600 in the housing 121, the mesh plate 1213 includes a number of wedge-shaped mesh strips 1214 arranged parallel to the drive shaft 122, and a number of annular hoops 1215 provided outside the wedge-shaped mesh strips 1214. The wedge-shaped mesh strips 1214 are arranged along the circumference of the front conical barrel 1211 or the rear conical barrel 1212 to enclose a coating space. The annular hoops 1215 are arranged at equal intervals along the direction of the wedge-shaped mesh strips 1214 to fix the wedge-shaped mesh strips 1214 between the front conical barrel 1211 and the rear conical barrel 1212. The wedge-shaped mesh strips 1214 are welded to the annular hoops 1215 by group welding. It should be noted that the cross-section of the wedge-shaped mesh strip 1214 in this embodiment is an isosceles triangle, and its bottom side is attached to the annular hoop 1215. The main parameters are the bottom width W and the cross-section height H. The gap between each wedge-shaped mesh strip 1214 is L, and the gap L must be smaller than the diameter of the pellets or tablets 600 to prevent material leakage. At the same time, increasing the gap L can increase the air flow through the mesh plate 1213, thereby improving the coating efficiency. Therefore, the size of the gap L should be as large as possible under the condition of ensuring no material leakage to improve the drying efficiency.

[0043] To improve the stirring efficiency, a number of blades are provided inside the housing 121. The blades include a number of stirring blades 123 provided on the inner wall of the mesh plate 1213 and a number of discharging blades 124 provided on the inner wall of the front conical barrel 1211. The stirring blades 123 and the discharging blades 124 are both inclined inside the housing 121, and the inclined directions of the stirring blades 123 and the discharging blades 124 are perpendicular to each other. When the coating assembly 120 rotates in a certain direction, only one of the functions of stirring or discharging can be realized, avoiding the coating assembly 120 stirring and discharging at the same time and reducing the coating efficiency.

[0044] To fix the stirring paddle 123, the stirring paddle 123 includes a connecting member 1231 fixedly connected to the inner wall of the front conical barrel 1211 and / or the rear conical barrel 1212, and a stirring blade 1232 perpendicular to the inner wall of the screen plate 1213. The stirring blade 1232 is attached to the inner wall of the screen plate 1213. Since one end of the connecting member 1231 is fixed to the inner wall of the front conical barrel 1211 and / or the rear conical barrel 1212 by screwing, it provides strong support for the stirring blade 1232. At the same time, the design that the stirring blade 1232 is attached to the inner wall of the screen plate 1213 also prevents the pellets or tablets 600 from passing through the gaps and missing the coating. The discharging paddle 124 includes a first guiding paddle 1241 perpendicular to the inner wall of the front conical barrel 1211 and the inner wall of the screen plate 1213, and a second guiding paddle 1242 provided at the mouth of the front conical barrel 1211. The first guiding paddle 1241 is an L-shaped bracket, and there is a guiding angle between the second guiding paddle 1242 and the first guiding paddle 1241. Since the angle between the second guiding paddle 1242 and the horizontal direction is larger than the angle between the first guiding paddle 1241 and the horizontal direction, a guiding angle appears. Then, when the coated pellets or tablets 600 enter the second guiding paddle 1242 from the first guiding paddle 1241, the setting of the guiding angle will cause the coated pellets or tablets 600 to be discharged from the mouth of the front conical barrel 1211 faster.

[0045] It should be emphasized that when the driving member 112 drives the driving shaft 122 to rotate in a certain direction, the stirring blade 1232 stirs the pellets or tablets 600 in the housing 121. At the same time, hot air is introduced into the interior of the housing 121 through the ventilation space of the screen plate 1213, and the spray gun 113 evenly sprays the coating liquid onto the surface of the pellets or tablets 600. With the drying of the hot air, the coating liquid is wrapped on the surface of the pellets or tablets 600, and after drying, a coating layer is formed to wrap the pellets or tablets 600, and finally the pellet coating process is completed. After the coating is completed. Since the inclination directions of the stirring paddle 123 and the discharging paddle 124 are perpendicularly arranged, the driving member 112 reverses the housing 121 through driving, and the pellets or tablets 600 finally fall into the docking container from the mouth of the front conical barrel 1211 along the discharging paddle 124 to complete the collection.

[0046] In addition, a cleaning machine 400 can be provided on one side of the coating machine 110. After the coating is completed, the cleaning machine 400 can be used to introduce cleaning liquid into the coating machine 110 to clean the coating liquid in the coating machine 110 or the coating assembly 120, which is convenient for the next coating.

[0047] In summary, according to a coating system provided by the present invention, a driving member drives a coating assembly to rotate in a coating machine, while spraying a coating solution onto pellets or cores in the coating assembly, and drying through a ventilation mechanism, so as to replace the fluidized bed coating method. The pellets or cores are evenly distributed in the rotating coating assembly, reducing the concept of uneven coating, improving the coating efficiency, shortening the coating time, and thus reducing the energy consumption. At the same time, the detachable coating assembly can also improve the versatility by replacing coating assemblies of different specifications. Specifically, the coating mechanism includes a coating machine and a coating assembly detachably connected to the coating machine, and one end of the coating assembly is driven by the coating machine; the coating machine includes a machine body, a driving member arranged outside the machine body, and a spray gun arranged inside the machine body; the driving member drives the coating assembly to rotate in the coating machine, sprays the coating solution onto the pellets or cores in the coating assembly through the spray gun, and dries through the ventilation mechanism.

[0048] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A coating system, characterized in that: The coating system comprises a coating mechanism and a ventilation mechanism communicated with the coating mechanism; The coating mechanism comprises a coating machine and a coating assembly detachably connected to the coating machine, wherein one end of the coating assembly is driven by the coating machine; The coating machine comprises a machine body, a driving member arranged outside the machine body, and a spray gun arranged inside the machine body; The driving member drives the coating component to rotate in the coating machine, and sprays the coating liquid onto the micro-pills or plain tablets in the coating component through a spray gun, and dries them through the ventilation mechanism.

2. The coating system according to claim 1, characterized in that The coating component comprises a shell, a driving shaft respectively arranged at one end of the shell, and a plurality of paddles arranged inside the shell, wherein the driving shaft is connected to the driving member.

3. The coating system according to claim 2, characterized in that The shell comprises a mesh plate, a front cone barrel and a rear cone barrel respectively arranged at two ends of the mesh plate, and the rear cone barrel is arranged on a side of the mesh plate close to the driving shaft.

4. The coating system according to claim 3, characterized in that The mesh plate includes a plurality of wedge-shaped mesh strips arranged parallel to the driving shaft, and an annular hoop arranged outside the wedge-shaped mesh strips, wherein the wedge-shaped mesh strips are arranged along the circumference of the front cone barrel or the rear cone barrel to enclose a coating space; A ventilation space is left between adjacent wedge-shaped mesh strips, and the size of the ventilation space is no larger than the size of the pellets or plain tablets.

5. The coating system according to claim 2, characterized in that: The paddles include a plurality of stirring paddles arranged on the inner wall of the mesh plate and a plurality of discharging paddles arranged on the inner wall of the front cone barrel. The stirring paddles and the discharging paddles are both arranged obliquely in the shell.

6. The coating system according to claim 5, characterized in that The stirring paddle comprises a connecting piece fixedly connected to the inner wall of the front cone barrel and / or the rear cone barrel, and a stirring blade perpendicular to the inner wall of the mesh plate, and the stirring blade is attached to the inner wall of the mesh plate.

7. The coating system according to claim 6, characterized in that The discharging paddle includes a first guide paddle perpendicular to the inner wall of the front cone barrel and the inner wall of the mesh plate, and a second guide paddle arranged at the barrel mouth of the front cone barrel, and a guide angle is arranged between the second guide paddle and the first guide paddle.

8. The coating system according to claim 7, characterized in that The first guide paddle is an L-shaped bracket.

9. The coating system according to claim 1, characterized in that: The ventilation mechanism includes an air inlet and an air outlet both connected to the coating machine, and the air inlet is used to pass hot air to the coating assembly.

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