Coating roller

Abstract

The utility model discloses a coating roller which comprises a roller body, a plurality of first stirring paddles and a plurality of second stirring paddles are arranged in the roller body, the width of the second stirring paddles is larger than that of the first stirring paddles, the first stirring paddles are arranged on the inner wall of the roller body at intervals, and the second stirring paddles are arranged on the inner wall of the roller body at intervals. A plurality of second stirring paddles are arranged at intervals in the circumferential direction of the roller body, and material flowing channels are reserved between the second stirring paddles and the inner wall of the roller body. The stirrer has the advantages of large stirring range and good stirring effect.

Description

Technical Field

[0001] The utility model relates to the technical field of food and drug packaging, and particularly relates to a coating drum. Background Art

[0002] An efficient coating machine is a coating device that sprays a thin film or sugar coating on the surface of tablets or pills and stirs them through a drum. During the coating process, it sprays on the surface of tablets or pills through a spray gun, stirs them evenly, and then dries the sprayed tablets or pills through hot air, so that the thin film can be evenly attached to the surface of the tablets or pills. During the drying and spraying process, the tablets or pills are stirred to ensure that all the tablets or pills in the coating pan can be attached with the same thickness of thin film or sugar coating, ensuring that all the tablets or pills in the pan can meet the same standard.

[0003] According to the requirements of solid preparation pharmaceutical process regulations, the process scale-up in proportion will have a great impact on the drug effect. The maximum allowable scale-up ratio is 10 times. When the solid preparation pharmaceutical process parameters are scaled up by more than 10 times, the process parameters need to be re-reviewed, which is particularly important for generic drugs. Therefore, an efficient coating machine that meets the working range of 10% - 100% is required, that is, it conforms to the process scale-up research. However, the existing efficient coating machine can only meet the working range of 30% - 100% at most, unable to meet the maximum scale-up range of the pharmaceutical process, which limits the application of process parameters. It is necessary to purchase multiple devices for process research, resulting in high production costs. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a coating drum with a large stirring range and good stirring effect.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A coating drum includes a drum body. A plurality of first stirring paddles and a plurality of second stirring paddles are arranged inside the drum body. The width of the second stirring paddle is greater than that of the first stirring paddle. The plurality of first stirring paddles are arranged at intervals on the inner wall of the drum body. The plurality of second stirring paddles are arranged at intervals along the circumferential direction of the drum body, and a material flow channel is left between each of them and the inner wall of the drum body.

[0007] As a further improvement of the above technical scheme:

[0008] The plurality of second stirring paddles are divided into two groups, and the two groups of second stirring paddles are respectively evenly arranged on the side walls of the drum body.

[0009] The plurality of first stirring paddles are evenly arranged on the end wall between the two side walls of the drum body.

[0010] A plurality of the first stirring paddles are all arranged obliquely. The plurality of the first stirring paddles are grouped in pairs, and each pair of the first stirring paddles is arranged oppositely and has opposite tilting directions.

[0011] A plurality of mesh holes for air inlet are provided on the side wall of the drum body.

[0012] Sealing heads are detachably connected to both sides of the drum body, and the side wall is located on the sealing heads. An inlet and outlet is provided on one of the sealing heads.

[0013] The sealing head is a standard sealing head.

[0014] A plurality of the second stirring paddles and the sealing heads are all detachably connected.

[0015] The second stirring paddle includes a first concave section, a first convex section, a second concave section and a second convex section which are connected in sequence. The first concave section is close to the inner wall of the drum body, the second convex section is far from the inner wall of the drum body, and the sum of the areas of the second concave section and the second convex section is greater than the sum of the areas of the first concave section and the first convex section.

[0016] A plurality of the first stirring paddles and the second stirring paddles are arranged staggeredly in the cross section of the drum body.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the coating drum disclosed by the present utility model, a plurality of the first stirring paddles are arranged at intervals on the inner wall of the drum body. When coating tablets or pills with a small loading amount (10% - 30%), they play a main stirring role. A plurality of the second stirring paddles are arranged at intervals along the circumferential direction of the drum body, and a material flow channel is left between the second stirring paddles and the inner wall of the drum body. The tablets or pills have good fluidity and good stirring effect. Moreover, the width of the second stirring paddle is greater than that of the first stirring paddle, and the contact area with the tablets or pills is larger. Therefore, when coating tablets or pills with a large loading amount (30% - 100%), the second stirring paddles play a main stirring role, and at the same time, the first stirring paddles play an auxiliary stirring role, further improving the stirring effect. The coating drum is provided with both the first stirring paddles and the second stirring paddles, which can stir materials with a loading amount of 10% - 100%. The stirring range is large, the stirring effect is good, and the adaptability is strong. It can meet a large magnification range in the pharmaceutical process. When applying process parameters, there is no need to use multiple devices, reducing production costs. Description of the Drawings

[0019] Figure 1 It is a three-dimensional perspective structural schematic diagram of the coating drum of the present utility model.

[0020] Figure 2 It is a front view perspective structural schematic diagram of the coating drum of the present utility model.

[0021] Figure 3 ForFigure 2 Enlarged view of part A

[0022] Figure 4 It is a schematic side sectional view of the coating drum of the present utility model.

[0023] Figure 5 It is a schematic front sectional view of the coating drum of the present utility model.

[0024] Each label in the figure represents: 1, drum body; 11, head; 12, inlet and outlet; 2, first stirring paddle; 3, second stirring paddle; 31, first concave section; 32, first convex section; 33, second concave section; 34, second convex section; 4, material flow channel. Specific embodiments

[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0028] In the present utility model, unless otherwise clearly defined and limited, the terms "assembled", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Figures 1 to 5An embodiment of the present utility model is shown. The coating drum of this embodiment includes a drum body 1, and a plurality of first stirring paddles 2 and a plurality of second stirring paddles 3 are arranged inside the drum body 1. The width of the second stirring paddle 3 is greater than that of the first stirring paddle 2. The plurality of first stirring paddles 2 are arranged at intervals on the inner wall of the drum body 1. The plurality of second stirring paddles 3 are arranged at intervals along the circumferential direction of the drum body 1, and a material flow channel 4 is left between each of them and the inner wall of the drum body 1.

[0030] In this coating drum, the plurality of first stirring paddles 2 are arranged at intervals on the inner wall of the drum body 1. When coating tablets or pills with a relatively small loading amount (10% - 30%), they play a main stirring role. The plurality of second stirring paddles 3 are arranged at intervals along the circumferential direction of the drum body 1, and a material flow channel 4 is left between them and the inner wall of the drum body 1. The tablets or pills have good fluidity and good stirring effect. Also, since the width of the second stirring paddle 3 is greater than that of the first stirring paddle 2, the contact area with the tablets or pills is larger. Therefore, when coating tablets or pills with a relatively large loading amount (30% - 100%), the second stirring paddles 3 play a main stirring role, while the first stirring paddles 2 play an auxiliary stirring role, further improving the stirring effect. By simultaneously arranging the first stirring paddles 2 and the second stirring paddles 3 in this coating drum, materials with a loading amount of 10% - 100% can be stirred. The stirring range is large, the stirring effect is good, and the adaptability is strong, which can meet a large amplification range in the pharmaceutical process. When applying for process parameters, there is no need to use multiple devices, reducing production costs.

[0031] In this embodiment, the plurality of second stirring paddles 3 are divided into two groups, and the two groups of second stirring paddles 3 are respectively evenly arranged on the side walls of the drum body 1. The stirring range is large, which can well balance the stirring of materials on both sides of the drum body 1 and further improve the stirring effect.

[0032] In this embodiment, the plurality of first stirring paddles 2 are evenly arranged on the end wall between the two side walls of the drum body 1. It not only meets the stirring of small - batch materials but also further assists in stirring the materials at the bottom of the drum body 1 when stirring large - batch materials.

[0033] In this embodiment, the plurality of first stirring paddles 2 are all inclined. The plurality of first stirring paddles 2 are grouped in pairs, and each pair of first stirring paddles 2 is arranged oppositely and has opposite inclination directions. This can stir the materials in different directions and further improve the stirring effect.

[0034] In this embodiment, a plurality of mesh holes for air inlet are provided on the side wall of the drum body 1. Hot air dries the sprayed materials through the mesh holes, enabling the film to evenly adhere to the surface of the tablets or pills.

[0035] In this embodiment, the two sides of the drum body 1 are detachably connected with the end heads 11, and the side walls are located on the end heads 11. An inlet and outlet 12 is provided on one of the end heads 11. Materials are fed in and out through the inlet and outlet 12. The detachable connection between the end head 11 and the drum body 11 facilitates the disassembly and replacement of the first stirring paddle 2 and the second stirring paddle 3.

[0036] In this embodiment, the end head 11 is a standard end head, which ensures that the materials will not accumulate when rotating and stirring in the drum body 1, and further improves the stirring effect.

[0037] In this embodiment, a plurality of the second stirring paddles 3 are detachably connected with the end head 11, which facilitates the disassembly and replacement of the second stirring paddle 3.

[0038] In this embodiment, the second stirring paddle 3 includes a first concave section 31, a first convex section 32, a second concave section 33 and a second convex section 34 which are connected in sequence. The first concave section 31 is close to the inner wall of the drum body 1, the second convex section 34 is far from the inner wall of the drum body 1, and the sum of the areas of the second concave section 33 and the second convex section 34 is greater than the sum of the areas of the first concave section 31 and the first convex section 32. The first concave section 31, the first convex section 32, the second concave section 33 and the second convex section 34 are connected to form a plurality of concave and convex arc surfaces, which makes the fluidity of the materials better during stirring. Moreover, the sum of the areas of the second concave section 33 and the second convex section 34 far from the inner wall of the drum body 1 is greater than the sum of the areas of the first concave section 31 and the first convex section 32 close to the inner wall of the drum body 1, which strengthens the stirring effect of the middle materials.

[0039] In this embodiment, a plurality of the first stirring paddles 2 and the second stirring paddles 3 are arranged staggeredly in the cross-section of the drum body 1. The distribution of the first stirring paddle 2 and the second stirring paddle 3 is more uniform, which further improves the stirring effect.

[0040] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model without departing from the technical solution of the present utility model shall fall within the scope of the protection of the technical solution of the present utility model.

Claims

1. A coating drum, comprising a drum body (1), characterized in that: The drum body (1) is provided with a plurality of first stirring paddles (2) and a plurality of second stirring paddles (3); the width of the second stirring paddles (3) is greater than the width of the first stirring paddles (2); the plurality of first stirring paddles (2) are arranged at intervals on the inner wall of the drum body (1); the plurality of second stirring paddles (3) are arranged at intervals along the circumference of the drum body (1), and material flow channels (4) are reserved between the second stirring paddles (3) and the inner wall of the drum body (1).

2. The coating drum according to claim 1, characterized in that: The plurality of second stirring paddles (3) are divided into two groups, and the two groups of second stirring paddles (3) are respectively and evenly arranged on the side walls of the drum body (1).

3. The coating drum according to claim 2, characterized in that: The plurality of first stirring paddles (2) are evenly arranged on the end wall between the two side walls of the drum body (1).

4. The coating drum according to claim 3, characterized in that: The plurality of first stirring paddles (2) are all arranged at an inclination, and the plurality of first stirring paddles (2) are grouped in pairs, and the first stirring paddles (2) in each group are arranged relative to each other and have opposite inclination directions.

5. The coating drum according to claim 2, characterized in that: The side wall of the drum body (1) is provided with a plurality of mesh holes for air intake.

6. The coating drum according to claim 2, characterized in that: The drum body (1) is detachably connected to the ends of the drum body (1), the side walls are located on the ends of the drum body (11), and one of the ends of the drum body (11) is provided with a material inlet and outlet port (12).

7. The coating drum according to claim 6, characterized in that: The sealing head (11) is a standard sealing head.

8. The coating drum according to claim 6, characterized in that: The plurality of second stirring paddles (3) and the sealing head (11) can be detachably connected.

9. The coating drum according to any one of claims 1 to 8, characterized in that: The second stirring paddle (3) comprises a first concave section (31), a first convex section (32), a second concave section (33) and a second convex section (34) which are connected in sequence, the first concave section (31) being close to the inner wall of the drum body (1), the second convex section (34) being far away from the inner wall of the drum body (1), and the sum of the areas of the second concave section (33) and the second convex section (34) being greater than the sum of the areas of the first concave section (31) and the first convex section (32).

10. The coating drum according to any one of claims 1 to 8, characterized in that: A plurality of first stirring paddles (2) and second stirring paddles (3) are arranged alternately on the cross section of the drum body (1).

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