A film coating device

Abstract

This application provides a film coating device, comprising: a base with upright plates mounted on both sides at the top; a coating pan body rotatably coupled between the two upright plates, the top of the coating pan body having two feed hoppers communicating with it, and the outer wall of the coating pan body having a discharge pipe communicating with it; a mixing and filtering assembly installed on the top of the coating pan body and located inside it; and a swing assembly cooperating with one of the rotating shafts on the side of one of the upright plates. By designing the filter disc as a structure capable of reciprocating up and down, when the stirring paddle agitates the material, the filter disc continuously changes position, so that the clumps originally settled above the filter disc are no longer in a fixed position. The stirring paddle can more effectively disperse the clumps, improving the clump treatment effect and reducing the problem of clump residue affecting coating quality and equipment operation stability.

Description

Technical Field

[0001] This utility model relates to the field of drug coating production and processing technology, and more specifically, to a film coating device. Background Technology

[0002] Film coating is a novel method designed to more effectively encapsulate drugs. The film coating process mainly involves: preparation of coating solution or suspension; droplet generation; droplet movement from spray gun to substrate bed; and droplet impact, wetting, spreading, and coalescence on the surface of the tablet core or particles.

[0003] Utility model patent application number: CN202223071111.0 discloses a film coating device, including a pot body and a base. Connecting rods are installed on both outer walls of the pot body, resulting in a reasonable structure. This utility model incorporates a motor A and a mixing mechanism. The pulley B on the rotating shaft A is connected to the pulley A on the connecting rod via a transmission belt. The motor A is configured to drive in a half-turn cycle, allowing it to drive the pot body to swing back and forth, thereby improving the mixing effect. The mixing mechanism, with its stirring and filtering effects, allows the coating powder and passivation water used in the coating process to be injected into the pot body through the feed hopper, where they are then stirred and filtered. Combined with the back-and-forth swinging of the pot body by the motor A, this effectively improves the production efficiency and effect of film coating, avoiding uneven mixing during the film coating process.

[0004] The aforementioned patent uses a filter plate fixedly installed in the middle of the pot body. When clumps appear in the cavity above the filter plate in the pot body, they can be isolated by the filter plate. After the stirring paddle disperses them, they can pass through the filter plate. However, since the filter plate is fixedly installed on the inner wall of the pot body, the stirring paddle above the filter plate is affected by its position and the fixed state of the filter plate. Therefore, it is not convenient to disperse the clumps that have settled above the filter plate, which affects the clump treatment effect to a certain extent.

[0005] Therefore, we have made improvements to this and proposed a film coating device. Utility Model Content

[0006] The purpose of this utility model is that, since the filter plate is fixedly installed on the inner wall of the pot, the stirring paddle above the filter plate is affected by its position and the fixed state of the filter plate when it is working. This makes it difficult to disperse the clumps that have settled on the filter plate, which to some extent affects the treatment effect of the clumps.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] Film coating equipment to improve the above problems.

[0009] The application is as follows:

[0010] The device includes: a base with upright plates on both sides at the top; a coating pan body rotatably connected between the two upright plates, the top of the coating pan body having two feed hoppers connected to it, and the outer wall of the coating pan body having a discharge pipe connected to it; rotating shafts that rotatably engage with the upright plates on both sides of the outer wall of the coating pan body; a heating seat installed at the bottom of the coating pan body, with an electric heating wire installed at the bottom of the heating seat; a mixing and filtering assembly installed at the top of the coating pan body; and a swing assembly that engages with one of the rotating shafts on the side of one of the upright plates.

[0011] In a preferred embodiment of the film coating equipment provided by this utility model, the mixing and filtering assembly includes a drive motor installed on the top of the coating pan body, and the output shaft of the drive motor is equipped with a rotating rod that extends into the interior of the coating pan body.

[0012] In a preferred embodiment of the film coating equipment provided by this utility model, the rotating rod is equipped with a fixed cylinder above and below the outer wall of the coating pan body, and the outer wall of the fixed cylinder is equipped with multiple sets of stirring paddles, which are located inside the coating pan body.

[0013] In a preferred embodiment of the film coating device provided by this utility model, the outer wall of the rotating rod is equipped with a cylindrical cam cylinder located between two fixed cylinders, and the outer wall of the cylindrical cam cylinder is movably fitted with a filter disc that cooperates with the upper stirring paddle.

[0014] In a preferred embodiment of the film coating equipment provided by this utility model, a limiting block is installed on the periphery of the filter disc, and a limiting groove is opened on the outer wall of the coating pan body to slide with the limiting block.

[0015] In a preferred embodiment of the film coating device provided by this utility model, a through groove is provided at the axis of the filter disc to movably cooperate with the cylindrical cam cylinder, a protrusion is installed on the inner wall of the through groove, and a cam guide groove that closes at both ends is provided on the outer wall of the cylindrical cam cylinder, and the protrusion cooperates with the cam guide groove.

[0016] In a preferred embodiment of the film coating equipment provided by this utility model, the swing assembly includes a fixed frame mounted on one side of the upright plate, a servo motor mounted on the outer wall of the side of the fixed frame, and a swing shaft fixedly connected to the rotating shaft on the side of the fixed frame near the upright plate.

[0017] In a preferred embodiment of the film coating device provided by this utility model, the output shaft of the servo motor is equipped with a worm gear located within a fixed frame, and the circumference of the swing shaft is equipped with a worm wheel that meshes with the worm gear.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model provides a film coating device, comprising: a base with upright plates mounted on both sides at the top; a coating pan body rotatably coupled between the two upright plates, the top of the coating pan body having two feed hoppers communicating with it, and the outer wall of the coating pan body having a discharge pipe communicating with it; rotating shafts rotatably coupled with the upright plates on both sides of the outer wall of the coating pan body; a heating seat installed at the bottom of the coating pan body, with an electric heating wire installed at the bottom of the heating seat; a mixing and filtering assembly installed at the top of the coating pan body; and a swinging assembly cooperating with one of the rotating shafts on the side of one of the upright plates. By designing the filter disc as a structure that can move up and down reciprocally, when the stirring paddle agitates the material, the filter disc continuously changes position, so that the clumps originally settled on the top of the filter disc are no longer in a fixed position. The stirring paddle can more effectively disperse the clumps, improving the clump treatment effect and reducing the problem of clump residue affecting coating quality and equipment operation stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the film coating equipment provided in this application;

[0021] Figure 2 A schematic structural diagram showing the overall side sectional view of the film coating equipment provided in this application;

[0022] Figure 3 This is a schematic diagram of the hybrid filter assembly structure provided in this application;

[0023] Figure 4 This is a schematic diagram of the swing component structure provided in this application.

[0024] The image shows:

[0025] 1. Base; 2. Vertical plate; 3. Coating pan body; 4. Feed hopper; 5. Discharge pipe; 6. Mixing and filtering assembly; 601. Drive motor; 602. Rotating rod; 603. Fixed cylinder; 604. Stirring paddle; 605. Cylindrical cam cylinder; 606. Filter disc; 607. Limiting groove; 608. Limiting block; 609. Through groove; 610. Protrusion; 611. Cam guide groove; 7. Swing assembly; 701. Fixed frame; 702. Servo motor; 703. Swing shaft; 704. Worm gear; 705. Worm; 8. Rotating shaft; 9. Heating seat; 10. Electric heating wire. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] Please refer to Figure 1-4A film coating device includes: a base 1 with upright plates 2 mounted on both sides above; a coating pan body 3 rotatably coupled between the two upright plates 2, with two feed hoppers 4 connected to the top of the coating pan body 3, and a discharge pipe 5 connected to the outer wall of the coating pan body 3; rotating shafts 8 rotatably coupled to the upright plates 2 on both sides of the outer wall of the coating pan body 3; a heating seat 9 installed at the bottom of the coating pan body 3, with an electric heating wire 10 installed at the bottom of the heating seat 9; a mixing and filtering assembly 6 installed at the top of the coating pan body 3; and a swing assembly 7 on the side of one of the upright plates 2 that engages with one of the rotating shafts 8. Material is added to the coating pan body 3 from the feed hoppers 4, and discharged through the discharge pipe 5 after coating is completed. The electric heating wire 10 at the bottom of the heating seat 9 at the bottom of the coating pan body 3 can generate heat to heat the material in the coating pan body 3, meeting the temperature requirements of the specific coating process and helping the coating liquid to adhere and dry better.

[0035] Please refer to Figure 2-3 The mixing and filtering assembly 6 includes a drive motor 601 mounted on the top of the coating pan body 3. The output shaft of the drive motor 601 is equipped with a rotating rod 602 that extends into the interior of the coating pan body 3. Fixed cylinders 603 are mounted above and below the rotating rod 602 on the outer wall of the coating pan body 3. Multiple sets of stirring paddles 604 are mounted on the outer wall of the fixed cylinders 603, located inside the coating pan body 3. A cylindrical cam cylinder 605 is mounted on the outer wall of the rotating rod 602, located between the upper and lower fixed cylinders 603. A filter disc 606 is movably fitted on the outer wall of the cylindrical cam cylinder 605, engaging with the upper stirring paddle 604. Limiting blocks 608 are mounted on the periphery of the filter disc 606. A limiting groove 607 is formed on the outer wall of the coating pan body 3, slidingly engaging with the limiting block 608. A through groove 609 is formed at the axial center of the filter disc 606, movably engaging with the cylindrical cam cylinder 605. A protrusion 6 is mounted on the inner wall of the through groove 609. 10. The outer wall of the cylindrical cam cylinder 605 is provided with a cam guide groove 611 that closes at both ends, and the protrusion 610 cooperates with the cam guide groove 611. When the drive motor 601 runs, its output shaft drives the rotating rod 602 to rotate. The fixed cylinder 603 and the stirring paddle 604 on the rotating rod 602 rotate accordingly to stir and mix the material in the coating pan body 3. At the same time, the cylindrical cam cylinder 605 on the rotating rod 602 also rotates. The filter disc 606 cooperates with the cam guide groove 611 on the outer wall of the cylindrical cam cylinder 605 through the protrusion 610 of the through groove 609. Under the restriction of the limiting block 608 and the limiting groove 607, the filter disc 606 moves up and down along the inner wall of the coating pan body 3. The oscillation of the coating pan body 3 and the stirring of the stirring paddle 604 in the mixing and filtering assembly 6 enable the material to achieve multi-dimensional movement in the coating pan body. The materials can fully contact and mix with each other and with the coating liquid, which improves the uniformity of coating.

[0036] Please refer to Figure 4 The oscillating assembly 7 includes a fixed frame 701 mounted on one side of the upright plate 2. A servo motor 702 is mounted on the outer wall of the side of the fixed frame 701. The side of the fixed frame 701 near the upright plate 2 is rotatably fitted with an oscillating shaft 703 fixedly connected to the rotating shaft 8. The output shaft of the servo motor 702 is fitted with a worm gear 705 located inside the fixed frame 701. A worm wheel 704 meshing with the worm gear 705 is mounted on the periphery of the oscillating shaft 703. The oscillating assembly 7 realizes the oscillation of the coating pan body 3. Inside the fixed frame 701 on one side of the upright plate 2, the servo motor 702 drives the worm gear 705 to rotate and mesh with the worm wheel 704 on the periphery of the oscillating shaft 703. Since the oscillating shaft 703 is fixedly connected to the rotating shaft 8, it drives the rotating shaft 8 and the coating pan body 3 to oscillate. This oscillation helps the material to be more evenly distributed and mixed in the coating pan body 3.

[0037] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A film coating device, characterized in that, include: The base (1) is equipped with upright plates (2) on both sides above; The two vertical plates (2) are rotatably fitted with a coating pan body (3). The top of the coating pan body (3) has two feed hoppers (4) connected to it. The outer wall of the coating pan body (3) is equipped with a discharge pipe (5) connected to it. Rotating shafts (8) that rotatably fit with the vertical plates (2) are installed on both sides of the outer wall of the coating pan body (3). A heating base (9) is installed at the bottom of the coating pan body (3), and an electric heating wire (10) is provided at the bottom of the inner side of the heating base (9). The top of the coating pan body (3) is equipped with a mixing and filtering assembly (6) located inside it. One of the upright plates (2) has a swing assembly (7) on its side that cooperates with one of the rotating shafts (8).

2. The film coating equipment according to claim 1, characterized in that, The mixing and filtering assembly (6) includes a drive motor (601) mounted on the top of the coating pan body (3), and the output shaft of the drive motor (601) is equipped with a rotating rod (602) that extends into the interior of the coating pan body (3).

3. The film coating equipment according to claim 2, characterized in that, The rotating rod (602) is equipped with a fixed cylinder (603) above and below the outer wall of the coating pan body (3). The outer wall of the fixed cylinder (603) is equipped with multiple sets of stirring paddles (604), and the stirring paddles (604) are located inside the coating pan body (3).

4. The film coating equipment according to claim 3, characterized in that, The outer wall of the rotating rod (602) is equipped with a cylindrical cam cylinder (605) located between the upper and lower fixed cylinders (603), and the outer wall of the cylindrical cam cylinder (605) is movably fitted with a filter disc (606) that cooperates with the upper stirring paddle (604).

5. A film coating apparatus according to claim 4, characterized in that, The filter disc (606) is provided with a limiting block (608) on its periphery, and the outer wall of the coating pan body (3) is provided with a limiting groove (607) that slides with the limiting block (608).

6. A film coating apparatus according to claim 5, characterized in that, The filter disc (606) has a through groove (609) at its axis that is movable to fit the cylindrical cam cylinder (605). The inner wall of the through groove (609) is provided with a protrusion (610). The outer wall of the cylindrical cam cylinder (605) has a cam guide groove (611) that is closed end to end. The protrusion (610) fits into the cam guide groove (611).

7. A film coating apparatus according to claim 1, characterized in that, The swing assembly (7) includes a fixed frame (701) installed on one side of the upright plate (2), a servo motor (702) is installed on the outer wall of the side of the fixed frame (701), and a swing shaft (703) is rotatably connected to the rotating shaft (8) on the side of the fixed frame (701) near the upright plate (2).

8. A film coating apparatus according to claim 7, characterized in that, The output shaft of the servo motor (702) is equipped with a worm gear (705) located in the fixed frame (701), and the circumference of the swing shaft (703) is equipped with a worm wheel (704) that meshes with the worm gear (705).

Images