Pharmaceutical aluminum foil antioxidant protective coating mixing equipment

Abstract

This utility model relates to the field of mixing equipment technology, and specifically discloses a mixing equipment for pharmaceutical aluminum foil antioxidant protective coating. A sampling outlet pipe is fixedly connected inside the mixing tank. An external threaded baffle is threaded inside the sampling outlet pipe, and a rubber sealing ring is fitted onto the outer surface of the external threaded baffle. A sampling drain valve is provided at the lower end of the sampling outlet pipe. The external threaded baffle, threaded inside the sampling outlet pipe, is used to block the sampling drain channel inside the sampling outlet pipe, preventing material from accumulating in the sampling outlet pipe during mixing. During sampling and testing, the external threaded baffle is screwed outwards. After the external threaded baffle is screwed and displaced a certain distance, the material and solution flow into the sampling outlet pipe due to gravity and are discharged along the drain chamber inside the sampling outlet pipe and through the sampling drain valve. This ensures that the mixing of materials is not interfered with, and the uniformly mixed coating can be directly taken out for sampling and testing.

Description

Technical Field

[0001] This utility model relates to the field of compounding equipment technology, and in particular to a compounding equipment for pharmaceutical aluminum foil antioxidant protective coating. Background Technology

[0002] Pharmaceutical aluminum foil antioxidant protective coating compounding equipment plays a crucial role in the production of pharmaceutical packaging materials. As an important component of pharmaceutical packaging, the antioxidant properties of pharmaceutical aluminum foil directly affect the quality and shelf life of the drugs. The antioxidant protective coating effectively blocks the corrosion of aluminum foil by oxygen and moisture, preventing oxidation and thus ensuring the stability of the drugs during storage and distribution. Therefore, compounding equipment plays a decisive role in accurately formulating coating materials and ensuring the consistency of coating quality and performance, which is vital to the development of the pharmaceutical packaging industry. Currently, pharmaceutical aluminum foil antioxidant protective coating compounding equipment typically requires the following technologies in practical applications:

[0003] 1. Precise metering technology: It can accurately measure the amount of various compounding materials (such as resins, additives, solvents, etc.) to ensure that the proportions of each component are accurate. This is the foundation for ensuring the stable performance of the antioxidant protective coating. Even a slight deviation in the component ratio may cause changes in the coating's key properties such as oxidation resistance and weather resistance.

[0004] 2. High-efficiency mixing technology: Equipped with a powerful stirring or mixing device, it enables materials with different properties and particle sizes to be uniformly mixed in a short time. Only through thorough mixing can the components work synergistically to form a high-performance coating.

[0005] 3. Temperature and Environmental Control Technology: Some compounding materials are temperature-sensitive; excessively high or low temperatures may affect their physicochemical properties, thereby impacting coating quality. Therefore, the equipment needs to precisely control the temperature during the compounding process. Simultaneously, environmental factors such as humidity and cleanliness can also affect the compounding effect, necessitating appropriate environmental control technologies to maintain a stable compounding environment.

[0006] 4. Sampling and testing technology: To verify the accuracy of the component ratio, sampling and testing can be carried out. Chemical analysis, spectral analysis and other methods can be used to detect the actual content of each component in the coating sample and compare it with the preset formula. If the component ratio deviation is found, the subsequent mixing process can be adjusted in time. By taking out the coating at the top and bottom ends, the uniformity determined by the mixing time can also be observed to maintain the quality of the medicine.

[0007] Currently, various equipment and methods are used to formulate and mix pharmaceutical-grade aluminum foil with antioxidant protective coatings. Some small-scale manufacturers use simple mixing tanks, where operators manually measure each component and then mix them in the tank. Other companies use semi-automatic mixing equipment with some automated metering capabilities. In addition, some advanced large-scale enterprises have introduced fully automated mixing production lines.

[0008] However, the above method has a prominent problem: in order to achieve sampling and testing of the coating, the existing device often sets a sampling valve near the top of the mixing tank. However, the valve has a channel for liquid flow. When stirring and mixing, the material will accumulate in this channel. When sampling, this part of the material often needs to be discarded and the material from the inner part can be taken out for sampling and testing, which results in the waste of some material. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a mixing device for the antioxidant protective coating of pharmaceutical aluminum foil. It solves the technical problem that, in order to achieve sampling and testing of the coating, a sampling valve is often set up near the top of the mixing tank. However, the valve has a channel for liquid flow. During stirring and mixing, the material will accumulate in this channel. When sampling, this part of the material often needs to be discarded, and the material from the inner part needs to be taken out for sampling and testing. This results in the waste of some materials.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A pharmaceutical aluminum foil antioxidant protective coating mixing equipment includes a mixing tank, a sampling outlet pipe fixedly connected inside the mixing tank, an external threaded stop pin threaded inside the sampling outlet pipe, a rubber sealing ring sleeved on the outer surface of the external threaded stop pin, a sampling drain valve provided at the lower end of the sampling outlet pipe, and a set of anti-slip stripes fixedly connected to the outer surface of the rubber sealing ring.

[0012] Preferably, the rubber sealing ring has two marking rings fixedly connected inside, and the sampling outlet tube has an observation port inside.

[0013] Preferably, both of the marking rings are at the same horizontal level as the observation port, and two feeding hoppers are fixedly connected to the upper end of the mixing tank.

[0014] Preferably, the mixing tank is equipped with a coating discharge valve on the side away from the sampling outlet pipe.

[0015] Preferably, a drive motor is fixedly connected to the lower end of the mixing tank, and three fan-shaped stirring rods are rotatably connected inside the mixing tank.

[0016] Preferably, the outer surfaces of the three fan-shaped stirring rods and the drive motor are all fitted with synchronous pulleys, and the outer surfaces of the three sets of synchronous pulleys are fitted with synchronous belts.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The external threaded stop pin connected to the internal thread of the sampling outlet pipe is used to block the sampling and drainage channel inside the sampling outlet pipe, preventing the material from accumulating in the sampling outlet pipe and causing difficulty in undisturbed conditions during the mixing operation. During the sampling and testing operation, the external threaded stop pin is screwed outward. After the external threaded stop pin is screwed and displaced a certain distance, the material, solution, etc., flow into the sampling outlet pipe due to gravity and are discharged along the drainage chamber inside the sampling outlet pipe through the sampling drainage valve for sampling and testing. This ensures that the mixing of materials is not disturbed, and the uniformly mixed coating can be directly taken out for sampling and testing.

[0019] 2. During the mixing operation of the coating, the output shaft of the drive motor drives the stirring rod to rotate and mix the materials. A synchronous pulley is installed outside the output shaft of the drive motor. The output shaft of the drive motor transmits power through the synchronous pulley and synchronous belt. This drives the stirring rod to rotate, and at the same time drives the three fan-shaped stirring rods located at the bottom of the inner wall of the mixing tank to rotate. The rotation of the three fan-shaped stirring rods stirs and mixes the bottom of the inner wall of the mixing tank, preventing the solution from settling to the bottom, ensuring the uniformity of mixing and improving the mixing efficiency. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is an exploded view of the sampling and dispensing tube connection of this utility model;

[0023] Figure 3 This is an exploded view of the external threaded stop pin connection of this utility model;

[0024] Figure 4 This is a cross-sectional view of the sampling and dispensing tube of this utility model;

[0025] Figure 5 This is an exploded view of the fan-shaped stirring rod connection of this utility model.

[0026] Legend: 11. Mixing tank; 12. Sampling outlet pipe; 13. External threaded stop; 14. Rubber sealing ring; 15. Sampling drain valve; 16. Anti-slip stripes; 17. Marking ring; 18. Observation port; 19. Feed hopper; 21. Coating discharge valve; 22. Drive motor; 23. Fan-shaped stirring rod; 24. Synchronous pulley; 25. Synchronous belt. Detailed Implementation

[0027] This application provides a mixing device for an antioxidant protective coating on pharmaceutical aluminum foil. This effectively solves the problem that, for coating sampling and testing, a sampling valve is often installed near the top of the mixing tank. However, this valve has a channel for liquid flow, and during mixing, material accumulates in this channel. Sampling often requires discarding this material and removing the inner portion for testing, resulting in material waste. The externally threaded stopper connected to the internal thread of the sampling outlet pipe blocks the sampling drainage channel, preventing material accumulation and disturbance during mixing. During sampling and testing, the externally threaded stopper is screwed outwards. After being screwed and displaced a certain distance, the material and solution flow into the sampling outlet pipe due to gravity and are discharged along the drainage chamber inside the pipe via the sampling drainage valve. This ensures that the material mixing is not interfered with, and the uniformly mixed coating can be directly removed for sampling and testing. Example

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical solution in this application embodiment effectively solves the problem that, in order to achieve sampling and testing of the coating, a sampling valve is often set near the upper part of the mixing tank. However, the valve has a channel for liquid flow. During stirring and mixing, the material will accumulate in this channel. When sampling, this part of the material often needs to be discarded, and the material from the inner part needs to be taken out for sampling and testing. This results in the waste of some material. The overall idea is as follows: a pharmaceutical aluminum foil antioxidant protective coating mixing equipment, including a mixing tank 11, with a sampling outlet pipe 12 fixedly connected inside the mixing tank 11. 2. An external threaded stop 13 is connected to the internal threaded connection. A rubber sealing ring 14 is fitted onto the outer surface of the external threaded stop 13. A sampling discharge valve 15 is provided at the lower end of the sampling discharge pipe 12. A set of anti-slip stripes 16 are fixedly connected to the outer surface of the rubber sealing ring 14. Two marking rings 17 are fixedly connected inside the rubber sealing ring 14. An observation port 18 is opened inside the sampling discharge pipe 12. Both marking rings 17 are on the same horizontal line as the observation port 18. The sampling discharge pipe 12 is located inside the mixing tank 11 near the upper end, allowing direct extraction of materials from the upper part of the tank. It can be used in conjunction with the material discharged by the coating discharge valve 21 for testing, and the material ratio can be adjusted. Simultaneously with the testing, the mixing uniformity determined by the stirring time is also tested. By testing the consistency of the materials in the upper and lower parts, the stirring time can be adjusted. The mixed coating material can be discharged through the sampling outlet pipe 12 for sampling and testing. The externally threaded baffle 13 connected to the internal thread of the sampling outlet pipe 12 is used to block the sampling and drainage channel inside the sampling outlet pipe 12, preventing the material from accumulating in the sampling outlet pipe 12 during the mixing operation and causing difficulty in undisturbed conditions. The rubber sealing ring 14 on the outer sleeve of the externally threaded baffle 13 is located at the end of the sampling outlet pipe 12 closest to the inside of the mixing tank 11 to ensure the mixing operation. To ensure the sealing of the sampling outlet tube 12, during sampling and testing, the external threaded stop 13 can be screwed outward by holding the anti-slip stripe 16 surface. Due to the threaded connection between the external threaded stop 13 and the sampling outlet tube 12, the external threaded stop 13 will be screwed out. After the external threaded stop 13 is screwed out a certain distance, the material, solution, etc., will flow into the sampling outlet tube 12 due to gravity and be discharged along the drainage chamber inside the sampling outlet tube 12 and the sampling drainage valve 15 for sampling and testing. The widest part inside the sampling outlet tube 12 is the drainage chamber, and the sampling drainage valve 15 is installed at the lower end of the drainage chamber. Refer to the attached instruction manual. Figure 4In the sample outlet pipe 12, the discharge chamber is located on the left side of the threaded groove. A circular discharge channel is opened inside the chamber. Two indicator rings 17 are installed inside the external threaded stop 13. The indicator ring 17 on the left is green and the indicator ring 17 on the right is red. In the initial state, the green indicator ring 17 is located in the observation port 18, indicating that the rubber sealing ring 14 blocks the discharge position of the sample outlet pipe 12. At this time, the material cannot be discharged. When the external threaded stop 13 is screwed to release the blockage of the sample outlet pipe 12, the external threaded stop 13 is screwed out along the inside of the sample outlet pipe 12. When the external threaded stop 13 is pulled outward, the red indicator ring 17 can be seen through the observation port 18, indicating that the external threaded stop 13 is about to be pulled out. At this time, the operator stops pulling out the external threaded stop 13 to prevent the coating material from flowing out directly along the sample outlet pipe 12.

[0029] Two feeding hoppers 19 are fixedly connected to the upper end of the mixing tank 11. A coating discharge valve 21 is provided on the side of the mixing tank 11 away from the sampling outlet pipe 12. Resin materials, additives and some auxiliary solvents are added into the mixing tank 11 through the feeding hoppers 19. The lower end of the feeding hopper 19 is a ball valve, which can close the channel of the feeding hopper 19 after feeding to prevent liquid from splashing out. A paddle-type stirring rod rotates inside the mixing tank 11. The stirring rod is driven to rotate by the output shaft of the drive motor 22. The rotation of the paddle-type stirring rod stirs and mixes the pharmaceutical aluminum foil antioxidant protective coating mixing material. The uniformly mixed coating is discharged through the coating discharge valve 21 for use.

[0030] A drive motor 22 is fixedly connected to the lower end of the mixing tank 11. Three fan-shaped stirring rods 23 are rotatably connected inside the mixing tank 11. Synchronous pulleys 24 are sleeved on the outer surfaces of the three fan-shaped stirring rods 23 and the drive motor 22. Synchronous belts 25 are sleeved on the outer surfaces of the three sets of synchronous pulleys 24. When the coating is being mixed, the stirring rods are rotated by the output shaft of the drive motor 22 to mix the materials. The synchronous pulleys 24 are installed outside the output shaft of the drive motor 22. The output shaft of the drive motor 22 transmits power through the synchronous pulleys 24 and the synchronous belts 25. This drives the stirring rods to rotate while simultaneously rotating the three fan-shaped stirring rods 23 located at the bottom of the inner wall of the mixing tank 11. The rotation of the three fan-shaped stirring rods 23 mixes the bottom of the inner wall of the mixing tank 11, preventing the solution from settling to the bottom and ensuring the uniformity of the mixing while improving the mixing efficiency.

[0031] To address the problems existing in the prior art, this utility model provides a mixing device for the antioxidant protective coating of pharmaceutical aluminum foil. The external threaded stop 13 connected to the internal thread of the sampling outlet pipe 12 is used to block the sampling and drainage channel inside the sampling outlet pipe 12, preventing the material from accumulating in the sampling outlet pipe 12 during the mixing operation and causing difficulty in undisturbed conditions. During the sampling and testing operation, the external threaded stop 13 is screwed outward. After the external threaded stop 13 is screwed and displaced by a certain distance, the material, solution, etc., flow into the sampling outlet pipe 12 due to gravity and are discharged along the drainage chamber inside the sampling outlet pipe 12 and the sampling drainage valve 15 for sampling and testing. This ensures that the mixing of materials is not interfered with, and the uniformly mixed coating can be directly taken out for sampling and testing.

[0032] Mixing tank 11: As the core component of the mixing equipment, it provides space for mixing resin materials, additives and auxiliary solvents. A baffle is installed at its lower end. The baffle protects the drive motor 22 and the synchronous pulley 24 while providing installation space for the drive motor 22.

[0033] Sampling outlet pipe 12: Located inside the mixing tank 11 near the top, its function is to directly take out the material at the top of the tank and test it together with the material discharged by the coating discharge valve 21. This is to test the mixing uniformity determined by the material ratio and the mixing time, and to provide a basis for adjusting the mixing time.

[0034] External threaded stop 13: Threaded connection inside the sampling outlet pipe 12, used to block the sampling and drainage channel inside the sampling outlet pipe 12;

[0035] Rubber sealing ring 14: Located at the end of the sampling outlet pipe 12 closest to the inside of the mixing tank 11, its function is to ensure the sealing of the sampling outlet pipe 12 during the mixing operation, prevent material leakage, ensure the normal progress of the mixing process, and avoid affecting the mixing effect.

[0036] Sampling drain valve 15: When the material flows into the drain chamber of the sampling outlet pipe 12 due to gravity, the material can be discharged by controlling the sampling drain valve 15 for sampling and testing, thereby achieving precise control of the sampling process.

[0037] Anti-slip stripe 16: Provides better grip friction for operators when screwing the external thread stop 13, making it easier for workers to operate and making the screwing of the external thread stop 13 smoother, avoiding operational errors caused by slipping hands;

[0038] Identification ring 17: Two identification rings 17 are fixedly connected inside the rubber sealing ring 14. The one on the left is green and the one on the right is red. The green identification ring 17 is initially located inside the observation port 18, indicating that the rubber sealing ring 14 blocks the discharge position of the sampling outlet pipe 12 and is in a state where material cannot be discharged. When the external threaded stop 13 is screwed out and pulled outward, the red identification ring 17 passes through the observation port 18, indicating that the external threaded stop 13 is about to be pulled out, reminding the staff to stop the operation and preventing the coating material from flowing out directly along the sampling outlet pipe 12 uncontrollably, thus serving as an operation indicator.

[0039] Observation port 18: The position change of the marking ring 17 can be seen through the observation port 18, providing operators with an intuitive operating reference and assisting in controlling the degree of screwing out of the external thread stop 13, ensuring the safety and controllability of the sampling process;

[0040] Feeding hopper 19: Used to add resin materials, additives and auxiliary solvents into the mixing tank 11; its lower end is a ball valve, which can be closed after feeding to prevent liquid from splashing out, ensuring the feeding process is safe and there is no material loss, and providing raw material input for the mixing process;

[0041] Coating discharge valve 21: used to discharge the uniformly mixed coating material in the mixing tank 11 for subsequent use. At the same time, the discharged material can be used in conjunction with the material taken out from the sampling outlet pipe 12 for testing to help determine the material ratio and mixing uniformity.

[0042] Drive motor 22: Its output shaft drives the paddle-type stirring rod to rotate, and stirs and mixes the pharmaceutical aluminum foil antioxidant protective coating compound material;

[0043] Fan-shaped stirring rod 23: Located at the bottom of the inner wall of the mixing tank 11, it stirs and mixes the materials at the bottom of the inner wall of the mixing tank 11, effectively preventing the solution from settling to the bottom. It works in conjunction with the paddle-type stirring rod to ensure that the materials in the entire mixing tank 11 are mixed evenly and improve the mixing efficiency.

[0044] Synchronous pulley 24: It is respectively sleeved on the outer surface of drive motor 22 and three fan-shaped stirring rods 23, and plays the role of transmitting power;

[0045] Synchronous belt 25: It is sleeved on the outer surface of the three sets of synchronous pulleys 24 and serves as a medium for power transmission. It transmits the power output by the drive motor 22 through the synchronous pulleys 24 to the fan-shaped stirring rods 23, so that the drive motor 22 can drive the three fan-shaped stirring rods 23 to rotate at the same time, ensuring the consistency and coordination of the stirring action and improving the stirring and mixing effect.

[0046] Working principle:

[0047] The first step involves adding resin materials, additives, and some auxiliary solvents into the mixing tank 11 through the feeding hopper 19. The lower end of the feeding hopper 19 is a ball valve, which can be closed after feeding to prevent liquid from splashing out. Inside the mixing tank 11, there is a rotating paddle-type stirring rod, which is driven by the output shaft of the drive motor 22. The rotation of the paddle-type stirring rod stirs and mixes the pharmaceutical aluminum foil antioxidant protective coating material. The uniformly mixed coating is discharged through the discharge valve 21 for use.

[0048] The second step involves the sampling outlet pipe 12, located near the top inside the mixing tank 11. This allows direct removal of the material from the upper part of the tank, which can be used in conjunction with the coating discharge valve 21 for material discharge and testing. This allows for testing of the material ratio and the mixing uniformity determined by the mixing time. By checking the consistency of the materials at the top and bottom, the mixing time can be adjusted. The mixed coating material can be discharged through the sampling outlet pipe 12 for sampling and testing. The externally threaded baffle 13 connected to the internal thread of the sampling outlet pipe 12 is used to block the sampling and discharge channel within the pipe, preventing material accumulation during mixing and ensuring proper disturbance. The rubber sealing ring 14 fitted around the externally threaded baffle 13 is used for… Located at the end of the sampling outlet pipe 12 closest to the inside of the mixing tank 11, ensuring the sealing of the sampling outlet pipe 12 during mixing operations. During sampling and testing, the external threaded stop 13 can be screwed outwards by holding the surface of the anti-slip stripes 16. Due to the threaded connection between the external threaded stop 13 and the sampling outlet pipe 12, the external threaded stop 13 will be screwed out. After the external threaded stop 13 is screwed out a certain distance, the material, solution, etc., flows into the sampling outlet pipe 12 due to gravity and is discharged along the drainage chamber inside the sampling outlet pipe 12 via the sampling drainage valve 15 for sampling and testing. The widest part inside the sampling outlet pipe 12 is the drainage chamber, and the sampling drainage valve 15 is installed at the lower end of the drainage chamber. (Refer to the attached instruction manual.) Figure 4In the middle, the discharge chamber is located on the left side of the threaded groove in the sampling outlet pipe 12, and a circular discharge channel is opened inside it. Two indicator rings 17 are installed in the external threaded stop 13. The indicator ring 17 on the left is green, and the indicator ring 17 on the right is red. In the initial state, the green indicator ring 17 is located in the observation port 18, indicating that the rubber sealing ring 14 blocks the discharge position of the sampling outlet pipe 12, and the pipe is in a state where material cannot be discharged. When the external threaded stop 13 is screwed on to release the blockage of the sampling outlet pipe 12, the external threaded stop 13 is screwed out along the inside of the sampling outlet pipe 12. When the external threaded stop 13 is pulled outward, if the red indicator ring 17 can be seen through the observation port 18, it indicates that the external threaded stop 13 is about to be pulled out. At this point, the operator stops continuously pulling out the external threaded stop 13 to prevent the coating material from flowing directly out along the sampling outlet pipe 12. During the coating mixing operation, the output shaft of the drive motor 22 drives the stirring rod to rotate and mix the material. A synchronous wheel 24 is installed outside the output shaft of the drive motor 22. The output shaft of the drive motor 22 transmits power through the synchronous wheel 24 and the synchronous belt 25, thereby driving the stirring rod to rotate while driving the three fan-shaped stirring rods 23 located at the bottom of the inner wall of the mixing tank 11 to rotate. The rotation of the three fan-shaped stirring rods 23 stirs and mixes the bottom of the inner wall of the mixing tank 11, preventing the solution from settling to the bottom, ensuring the uniformity of mixing and improving the mixing efficiency.

[0049] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A mixing and blending device for an antioxidant protective coating on pharmaceutical aluminum foil, comprising a mixing and blending tank (11), wherein a sampling and dispensing pipe (12) is fixedly connected inside the mixing and blending tank (11), characterized in that, The sampling outlet tube (12) is internally threaded with an external threaded stop (13), and a rubber sealing ring (14) is fitted on the outer surface of the external threaded stop (13). A sampling drain valve (15) is provided at the lower end of the sampling outlet tube (12). Among them, a set of anti-slip stripes (16) are fixedly connected to the outer surface of the rubber sealing ring (14).

2. The pharmaceutical aluminum foil antioxidant protective coating mixing equipment as described in claim 1, characterized in that, The rubber sealing ring (14) has two marking rings (17) fixedly connected inside. The sampling tube (12) has an observation port (18) inside.

3. The pharmaceutical aluminum foil antioxidant protective coating mixing equipment as described in claim 2, characterized in that, Both of the aforementioned marking rings (17) are on the same horizontal line as the observation port (18); Two feeding hoppers (19) are fixedly connected to the upper end of the mixing tank (11).

4. The pharmaceutical aluminum foil antioxidant protective coating mixing equipment as described in claim 3, characterized in that, A coating discharge valve (21) is provided on the side of the mixing tank (11) away from the sampling outlet pipe (12).

5. The pharmaceutical aluminum foil antioxidant protective coating mixing equipment as described in claim 4, characterized in that, A drive motor (22) is fixedly connected to the lower end of the mixing tank (11). The mixing tank (11) is internally connected to three fan-shaped stirring rods (23).

6. The pharmaceutical aluminum foil antioxidant protective coating mixing equipment as described in claim 5, characterized in that, Synchronous pulleys (24) are fitted onto the outer surfaces of the three fan-shaped stirring rods (23) and the drive motor (22); Among them, the outer surfaces of the three sets of synchronous pulleys (24) are fitted with synchronous belts (25).

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