Continuous coating equipment

Abstract

The utility model discloses continuous coating equipment. The continuous coating equipment comprises a master controller, a preheater, a dryer and at least two coating machines, the discharging end of the preheater is connected with the feeding end of each coating machine through a material distributing device, the discharging end of each coating machine is connected with the feeding end of the drying machine, and the preheater and the drying machine are provided with a feeding online weighing device and a discharging online weighing device respectively. And the master controller is electrically connected with the preheater, the dryer, the coating machines, the feeding online weighing device and the discharging online weighing device respectively. The continuous coating equipment disclosed by the utility model can continuously and synchronously carry out three steps of preheating, coating and drying to realize continuous coating production, so that the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the pharmaceutical field, and in particular to a continuous coating device. Background Technology

[0002] Coating is a common process in pharmaceutical manufacturing. By encapsulating the core of the drug (i.e., the drug itself) in a shell, it improves the drug's appearance, taste, stability, and controlled-release properties. The purposes of coating are varied, including improving oral comfort, protecting the drug from environmental influences, and prolonging the drug's release time.

[0003] Existing coating processes generally include the following steps in sequence:

[0004] Preheating step: Put the drug body that needs to be coated into the drum of the coating machine, and the coating machine will preheat the drug body.

[0005] Coating process: The coating machine performs the coating operation to evenly spray the coating solution onto the surface of the drug body;

[0006] Drying step: The drug body coated with coating liquid is taken out from the coating machine and sent into the dryer. The dryer performs the drying work to completely solidify the coating liquid on the surface of the drug body.

[0007] The existing coating process has the following problems:

[0008] 1. The coating machine and the dryer are independent of each other, so the medicine needs to be manually removed from the coating machine and sent to the dryer. However, the manual transfer of the medicine is slow and easily contaminated by the outside world.

[0009] 2. Since the coating machine can only produce one batch of material at a time, and the coating and drying steps are completed in the same inner cavity of the coating machine, the existing coating process requires the coating of one batch of drug body before the coating of the next batch of drug body can be carried out, which cannot achieve continuous production.

[0010] 3. In the existing coating production process, after the coating liquid on the surface of the drug body has completely solidified, it is necessary to take a sample and weigh it to test whether the coating quality is qualified. The testing time is long, the sampled drugs can only be scrapped, and the test results may have some deviation due to the representativeness of the sample.

[0011] In view of the above problems, it is necessary to study a continuous coating equipment that can overcome the problems of existing coating processes. Utility Model Content

[0012] The purpose of this invention is to provide a continuous coating equipment that can overcome the problems existing in the current coating process.

[0013] To achieve the above objectives, the solution of this utility model is:

[0014] A continuous coating equipment includes a main controller, a preheater, a dryer, and at least two coating machines; the discharge end of the preheater is connected to the feed end of each coating machine via a material distribution device, and the discharge end of each coating machine is connected to the feed end of the dryer; the preheater and the dryer are respectively equipped with an online weighing device for feeding and an online weighing device for discharging; the main controller is electrically connected to the preheater, the dryer, each coating machine, the online weighing device for feeding, and the online weighing device for discharging.

[0015] The preheater includes a preheating chamber, a preheating drum, a preheating drive motor, and a preheating hot air blower. The preheating chamber has a preheating cavity, and the preheating drum is rotatably mounted inside the preheating cavity. The preheating drive motor drives the preheating drum to rotate. The preheating hot air blower is installed in the preheating chamber and is used to supply hot air to the preheating cavity. The preheating drive motor and the preheating hot air blower are electrically connected to the main controller. The periphery of the preheating drum is hollowed out. A preheating feed pipe is rotatably fitted on the feed side of the preheating drum, passing through the center of the feed side of the preheating drum, with the feed end of the preheating feed pipe extending beyond the center. Outside the heating chamber, the discharge end of the preheating feed pipe extends into the preheating drum; a preheating discharge assembly is fixedly fitted on the discharge side of the preheating drum, the preheating discharge assembly includes a preheating discharge hook block and a preheating discharge pipe; the preheating discharge pipe passes through the center of the feed side of the preheating drum, and the discharge end of the preheating discharge pipe extends out of the preheating chamber, while the feed end of the preheating discharge pipe extends into the preheating drum; the preheating discharge hook block is set on the inner wall of the discharge side of the preheating drum and connected to the preheating discharge pipe, and a preheating discharge groove communicating with the inner cavity of the preheating discharge pipe is formed between the preheating discharge hook block and the side wall of the preheating discharge pipe.

[0016] The inner side of the preheating drum is fitted with multiple preheating plates.

[0017] The material distribution device includes a material distribution box, multiple material distribution baffles, and a material distribution drive device for driving the rotation of each material distribution baffle. The material distribution drive device is electrically connected to the main controller. The material distribution box has a material distribution inlet, a material distribution passage, and multiple material distribution outlets. Each material distribution outlet is lower than the material distribution inlet and is arranged sequentially from top to bottom on the side wall of the material distribution box. The material distribution passage is connected to the material distribution inlet and each material distribution outlet. Each material distribution baffle is rotatably arranged in the material distribution passage, and the lower end of the material distribution baffle is hinged to the material distribution box. Each material distribution baffle movably blocks each material distribution outlet and movably isolates the material distribution passage. When isolating the material distribution passage, the material distribution baffle is inclined. Each coating machine is lower than the material distribution device. The discharge end of the preheating discharge pipe of the preheater is rotatably connected to the material distribution inlet of the material distribution device. The feed end of each coating machine is connected to each material distribution outlet of the material distribution device through a conveying pipe.

[0018] The coating machine comprises a coating machine housing, a coating drum, a coating drive motor, a coating hot air blower, and a coating liquid spraying device. The coating machine housing has a coating chamber, within which the coating drum is rotatably mounted and driven by the coating drive motor. The coating hot air blower is installed in the coating machine housing and supplies hot air to the coating chamber. The coating drive motor, coating hot air blower, and coating liquid spraying device are electrically connected to a main controller. The coating drum has a perforated circumferential wall. A coating feed pipe is rotatably fitted to the feed side of the coating drum, passing through the center of the feed side of the coating drum, with the feed end of the feed pipe extending outside the coating machine housing and the discharge end of the feed pipe... The coating drum extends into the coating drum; a coating discharge assembly is fixedly fitted on the discharge side of the coating drum, the coating discharge assembly includes a coating discharge hook block and a coating discharge pipe; the coating discharge pipe passes through the center of the feed side of the coating drum, and the discharge end of the coating discharge pipe extends out of the coating machine box, while the feed end of the coating discharge pipe extends into the coating drum; the coating discharge hook block is set on the inner wall of the discharge side of the coating drum and connected to the coating discharge pipe, and a coating discharge groove communicating with the inner cavity of the coating discharge pipe is formed between the coating discharge hook block and the side wall of the coating discharge pipe; the coating spraying device has a spray pipe that extends from the coating feed pipe into the coating drum, and the spray pipe is connected to multiple spray nozzles.

[0019] The inner side of the coating drum is fitted with multiple coating plates.

[0020] The dryer is located below each coating machine. The discharge end of the coating discharge pipe of each coating machine is connected to the feed end of the dryer through a connecting pipe. The connecting pipe and the discharge end of the coating discharge pipe are rotatably connected.

[0021] The dryer includes a drying chamber, a drying drum, a drying drive motor, and a drying hot air blower. The drying chamber has a drying cavity, and the drying drum is rotatably mounted inside the drying cavity. The drying drive motor drives the drying drum to rotate, and the drying hot air blower is installed in the drying chamber and used to supply hot air to the drying cavity. The drying drive motor and the drying hot air blower are electrically connected to a main controller. The peripheral wall of the drying drum is perforated. A drying feed pipe is rotatably fitted to the feed side of the drying drum, passing through the center of the feed side of the drying drum, with the feed end of the drying feed pipe extending outwards. Outside the dryer housing, the discharge end of the drying feed pipe extends into the drying drum; a drying discharge assembly is fixedly fitted on the discharge side of the drying drum, the drying discharge assembly includes a drying discharge hook block and a drying discharge pipe; the drying discharge pipe passes through the center of the feed side of the drying drum, and the discharge end of the drying discharge pipe extends out of the dryer housing, while the feed end of the drying discharge pipe extends into the drying drum; the drying discharge hook block is set on the inner wall of the discharge side of the drying drum and connected to the drying discharge pipe, and a drying discharge groove communicating with the inner cavity of the drying discharge pipe is formed between the drying discharge hook block and the side wall of the drying discharge pipe.

[0022] The inner side of the peripheral wall of the drying drum is fitted with multiple drying plates.

[0023] By adopting the above scheme, this invention enables the drug body to automatically pass through the preheater, coating machine, and dryer sequentially, allowing for automatic preheating, coating, and drying, thus avoiding the efficiency and contamination problems caused by manual transfer of the drug body. Furthermore, this invention features at least two coating machines, each capable of coating at different times, allowing the preheating and drying steps to be performed simultaneously and in coordination with the coating step. This ensures continuous and synchronous preheating, coating, and drying, achieving continuous coating production and effectively improving production efficiency. Additionally, this invention uses online weighing devices for both feeding and discharging to directly obtain the final total weight of the drug body in the preheater and the final total weight of the finished drug in the dryer. The coating weight gain rate can be calculated based on these final weights, eliminating the need for sampling and reducing losses and testing errors associated with sampling. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the continuous coating equipment of this utility model.

[0025] Figure 2 This is a partial structural schematic diagram of the continuous coating equipment of this utility model.

[0026] Figure 3 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 1 .

[0027] Figure 4 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 2 .

[0028] Figure 5 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 3 .

[0029] Figure 6 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 4 .

[0030] Figure 7 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 5 .

[0031] Figure 8 A partial structural cross-section of the continuous coating equipment of this utility model. Figure 6 .

[0032] Label Explanation:

[0033] Main controller 1,

[0034] Preheater 2, preheater housing 21, preheating chamber 211, preheating drum 22, preheating baffle 221, preheating drive motor 23, preheating hot air blower 24, preheating feed pipe 25, preheating discharge assembly 26, preheating discharge hook 261, preheating discharge pipe 262, preheating discharge groove 260

[0035] Dryer 3, dryer housing 31, drying chamber 311, drying drum 32, drying baffle 321, drying drive motor 33, drying hot air blower 34, drying feed pipe 35, drying discharge assembly 36, drying discharge hook 361, drying discharge pipe 362, drying discharge groove 360.

[0036] Coating machine 4, coating machine housing 41, coating chamber 411, coating drum 42, coating baffle 421, coating drive motor 43, coating hot air blower 44, coating feed pipe 45, coating discharge assembly 46, coating discharge hook 461, coating discharge pipe 462, coating discharge groove 460, coating spraying device 47, spraying pipe 471, spraying nozzle 472.

[0037] Material distribution device 5, material distribution box 51, material distribution inlet 511, material distribution passage 512, material distribution outlet 513, material distribution baffle 52.

[0038] Online feeding weighing device 6,

[0039] Online weighing device for discharge 7,

[0040] Pipeline 8

[0041] Connecting pipe 9. Detailed Implementation

[0042] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0043] like Figures 1 to 8 As shown, this utility model discloses a continuous coating equipment, which includes a main controller 1, a preheater 2, a dryer 3, and at least two coating machines 4; wherein, the discharge end of the preheater 2 is connected to the feed end of each coating machine 4 through a material distribution device 5, and the discharge end of each coating machine 4 is connected to the feed end of the dryer 3. The preheater 2 and the dryer 3 are respectively equipped with an online weighing device 6 for feeding and an online weighing device 7 for discharging. The main controller 1 is electrically connected to the preheater 2, the dryer 3, each coating machine 4, the online weighing device 6 for feeding, and the online weighing device 7 for discharging. The main controller 1 can be a PLC or an industrial control computer.

[0044] The continuous coating production process using the aforementioned continuous coating equipment (i.e., the method of using the continuous coating equipment) includes the following steps:

[0045] Preheating step: The drug body is fed into the preheater 2 from the feed end of the preheater 2. The main controller 1 controls the preheater 2 to preheat the drug body. At the same time, the main controller 1 weighs the total weight of the drug body in real time through the online weighing device 6. After the drug body is preheated, the main controller 1 controls the preheater 2 to output the drug body to the dispensing device 5. The main controller 1 also controls the dispensing device 5 to transport the drug body output from the preheater 2 to one of the empty coating machines 4.

[0046] Coating process: When the drug body enters the coating machine 4, the main controller 1 controls the coating machine 4 to perform the coating work and spray the coating liquid onto the surface of the drug body to obtain the drug semi-finished product. After the coating machine 4 completes the coating work, the main controller 1 controls the coating machine 4 to output the drug semi-finished product to the dryer 3.

[0047] Drying Steps: When the semi-finished drug enters the dryer 3, the main controller 1 controls the dryer 3 to perform the drying operation, causing the coating liquid on the surface of the semi-finished drug to solidify and obtain the finished drug. At the same time, the main controller 1 weighs the total weight of the finished drug in real time through the online weighing device 7. After the dryer 3 completes the drying operation, the main controller 1 controls the dryer 3 to output the finished drug. Furthermore, the main controller 1 calculates the coating weight gain rate based on the final total weight of the drug body in the preheater 2 and the final total weight of the finished drug in the dryer 3. The formula for calculating the coating weight gain rate is: Y = (BA) ÷ A × 100%, where A is the final total weight of the drug body in the preheater 2; B is the final total weight of the finished drug in the dryer 3; and Y is the coating weight gain rate.

[0048] As described above, this invention enables the drug body to automatically pass through the preheater 2, coating machine 4, and dryer 3 sequentially, allowing for automatic preheating, coating, and drying. This avoids the inefficiency and contamination problems associated with manual transfer of the drug body. Furthermore, this invention includes at least two coating machines 4, each capable of performing coating at different times. This allows the preheating and drying steps to be coordinated with the coating step, ensuring continuous and synchronous preheating, coating, and drying for continuous coating production and effectively improving production efficiency. Additionally, this invention uses an online weighing device 6 for feeding and an online weighing device 7 for discharging to directly obtain the final total weight of the drug body in the preheater 2 and the final total weight of the finished drug product in the dryer 3. The coating weight gain rate can be calculated based on these final weights, eliminating the need for sampling and reducing losses and testing errors associated with sampling.

[0049] To facilitate understanding of this utility model, the following example illustrates its working logic: "The drying step takes 10 minutes, the coating step takes 60 minutes, the drying step takes 10 minutes, and there are 6 coating machines 4 in total."

[0050] The working logic of the preheater 2 and coating machine 4 is as follows: Initially, preheater 2 performs the first preheating step; after the first preheating step is completed, the drug product is input into the first coating machine 4 for coating; simultaneously with the coating step in the first coating machine 4, preheater 2 performs the second preheating step; after the second preheating step is completed, the drug product is input into the second coating machine 4 for coating; simultaneously with the coating step in the second coating machine 4, preheater 2 performs the third preheating step; after the third preheating step is completed, the drug product is input into the third coating machine 4 for coating; simultaneously with the coating step in the third coating machine 4, preheater 2 performs the fourth preheating step; after the fourth preheating step is completed, the drug product is input into the fourth coating machine 4 for coating; and so on. While performing the coating step, the preheater 2 performs the fifth preheating step; after the fifth preheating step is completed, the drug body is fed into the fifth coating machine 4 for the coating step; while the fifth coating machine 4 is performing the coating step, the preheater 2 performs the sixth preheating step; after the sixth preheating step is completed, the drug body is fed into the sixth coating machine 4 for the coating step; while the sixth coating machine 4 is performing the coating step, the preheater 2 performs the seventh preheating step; after the seventh preheating step is completed, the drug body is fed into the first coating machine 4 for the coating step (after the seventh preheating step, the first coating machine 4 has already completed one coating step for the previous batch of drug bodies); and so on. After the continuous coating equipment of this utility model is working stably, the preheating step and the coating step can be performed simultaneously.

[0051] The working logic of the coating machine 4 and the dryer 3 is as follows: Initially, after the first coating machine 4 completes its coating step, it inputs the semi-finished drug product into the dryer 3, causing the dryer 3 to perform its first drying step. After the dryer 3 completes its first drying step, the second coating machine 4 also completes its coating step and inputs the semi-finished drug product into the dryer 3, causing the dryer 3 to perform its second drying step. After the dryer 3 completes its second drying step, the third coating machine 4 also completes its coating step and inputs the semi-finished drug product into the dryer 3, causing the dryer 3 to perform its third drying step. After the dryer 3 completes its third drying step, the fourth coating machine 4 also completes its coating step and inputs the semi-finished drug product into the dryer 3, causing the dryer 3 to perform its fourth drying step. After the dryer 3 completes its fourth drying step, the fifth coating machine 4... The coating machine 4 completes the coating step, and the fifth coating machine 4 inputs the semi-finished drug into the dryer 3, causing the dryer 3 to perform the fifth drying step. After the dryer 3 completes the fifth drying step, the sixth coating machine 4 also completes the coating step and inputs the semi-finished drug into the dryer 3, causing the dryer 3 to perform the sixth drying step. After the dryer 3 completes the sixth drying step, the first coating machine 4 completes the coating step again and inputs the semi-finished drug into the dryer 3, causing the dryer 3 to perform the seventh drying step. After the dryer 3 completes the seventh drying step, the second coating machine 4 completes the coating step again and inputs the semi-finished drug into the dryer 3, causing the dryer 3 to perform the eighth drying step. And so on. After the continuous coating equipment of this utility model is working stably, the coating step and the drying step can be carried out simultaneously.

[0052] In this embodiment of the present invention, the preheater 2 includes a preheating housing 21, a preheating drum 221, a preheating drive motor 23, and a preheating hot air blower 24. The preheating housing 21 is provided with a preheating chamber 211. The preheating drum 221 is rotatably disposed in the preheating chamber 211 and is driven to rotate by the preheating drive motor 23. The preheating hot air blower 24 is installed in the preheating housing 21 and is used to deliver hot air to the preheating chamber 211. The preheating drive motor 23 and the preheating hot air blower 24 are electrically connected to the main controller 1. The peripheral wall of the preheating drum 221 is hollowed out. A preheating feed pipe 25 is rotatably fitted on the feed side of the preheating drum 221. The preheating feed pipe 25 passes through the center of the feed side of the preheating drum 221, and the feed end of the preheating feed pipe 25 extends out of the preheating chamber. The outer casing 21 is used to receive the drug body. The discharge end of the preheating feed pipe 25 extends into the preheating drum 221. A preheating discharge assembly 26 is fixedly fitted on the discharge side of the preheating drum 221. The preheating discharge assembly 26 includes a preheating discharge hook block 261 and a preheating discharge pipe 262. The preheating discharge pipe 262 passes through the center of the feed side of the preheating drum 221, and the discharge end of the preheating discharge pipe 262 extends out of the preheating casing 21, while the feed end of the preheating discharge pipe 262 extends into the preheating drum 221. The preheating discharge hook block 261 is disposed on the inner wall of the discharge side of the preheating drum 221 and connected to the preheating discharge pipe 262. A preheating discharge groove 260 communicating with the inner cavity of the preheating discharge pipe 262 is formed between the preheating discharge hook block 261 and the side wall of the preheating discharge pipe 262. The working principle of the preheater 2 is as follows: When the preheater 2 is preheating, the main controller 1 controls the preheating drive motor 23 to drive the preheating drum 221 to rotate forward. At the same time, the main controller 1 controls the preheating hot air blower 24 to deliver hot air to the preheating chamber 211, so that the medicine body rolls and is heated in the preheating drum 221, thereby preheating the medicine body. When the preheater 2 outputs the medicine body to the dispensing device 5, the main controller 1 controls the preheating drive motor 23 to drive the preheating drum 221 to rotate in reverse. At this time, the preheating discharge groove 260 of the preheating discharge assembly 26 hooks the medicine body to the preheating discharge pipe 262 and sends it from the preheating discharge pipe 262 into the dispensing device 5.

[0053] In an embodiment of this utility model, a plurality of preheating plates 221 may be fitted on the inner side of the periphery of the preheating drum 221; when the preheating drum 221 rotates forward, the preheating plates 221 will move the medicine body so that the medicine body is heated evenly.

[0054] In an embodiment of this utility model, the material dispensing device 5 includes a material dispensing box, multiple material dispensing baffles 52, and a material dispensing drive device (not shown) that drives each material dispensing baffle 52 to rotate. The material dispensing drive device can be a motor that is driven and connected to each material dispensing baffle 52 respectively. The material dispensing drive device is electrically connected to the main controller 1. The material dispensing box is provided with a material dispensing inlet 511, a material dispensing passage 512, and multiple material dispensing outlets 513. Each material dispensing outlet 513 is lower than the material dispensing inlet 511, and each material dispensing outlet 513 is arranged sequentially from top to bottom on the side wall of the material dispensing box. The material dispensing passage 512 is connected to the material dispensing inlet 511 and each material dispensing outlet. 513 are connected, and each material distribution baffle 52 is rotatably set in the material distribution passage 512, with the lower end of the material distribution baffle 52 hinged to the material distribution box. Each material distribution baffle 52 movably blocks each material distribution outlet 513, and each material distribution baffle 52 movably isolates the material distribution passage 512. When the material distribution baffle 52 isolates the material distribution passage 512, it is set at an angle. Each coating machine 4 is lower than the material distribution device 5. The discharge end of the preheating discharge pipe 262 of the preheater 2 is rotatably connected to the material distribution inlet 511 of the material distribution device 5. The feeding end of each coating machine 4 is connected to each material distribution outlet 513 of the material distribution device 5 through the conveying pipe 8. The working principle of the dispensing device 5 is as follows: when the dispensing device 5 needs to convey the drug body to a coating machine 4, the main controller 1 drives the dispensing baffle 52 corresponding to the coating machine 4 to not block the dispensing outlet 513 corresponding to the coating machine 4 through the dispensing drive device, and the dispensing baffle 52 corresponding to the coating machine 4 blocks the dispensing passage 512; at the same time, the other dispensing baffles 52 still block their respective dispensing outlets; in this way, when the preheater 2 outputs the drug body to the dispensing device 5, the drug body will be conveyed to the corresponding coating machine 4 through the opened dispensing outlet 513 under the action of gravity.

[0055] In an embodiment of this utility model, the coating machine 4 includes a coating machine housing 41, a coating drum 42, a coating drive motor 43, a coating hot air blower 44, and a coating spraying device 47; the coating machine housing 41 is provided with a coating cavity 411, the coating drum 42 is rotatably disposed in the coating cavity 411 and the coating drive motor 43 drives the coating drum 42 to rotate, and the coating hot air blower 44 is installed in the coating machine housing 41 and is used to deliver hot air to the coating cavity 411; The coat drive motor 43, the coating hot air blower 44, and the coating liquid spraying device 47 are electrically connected to the main controller 1; the peripheral wall of the coating drum 42 is hollowed out; a coating feed pipe 45 is rotatably fitted on the feed side of the coating drum 42, the coating feed pipe 45 passes through the center of the feed side of the coating drum 42, and the feed end of the coating feed pipe 45 extends out of the coating machine box 41, while the discharge end of the coating feed pipe 45 extends into the coating drum 42; the discharge side of the coating drum 42... A coating discharge assembly 46 is fixedly fitted, comprising a coating discharge hook 461 and a coating discharge pipe 462. The coating discharge pipe 462 passes through the center of the feed side of the coating drum 42, with its discharge end extending out of the coating machine housing 41 and its feed end extending into the coating drum 42. The coating discharge hook 461 is disposed on the inner wall of the discharge side of the coating drum 42 and connected to the coating discharge pipe 462. A coating discharge groove 460 communicating with the inner cavity of the coating discharge pipe 462 is formed between the side wall of the coating discharge hook block 461 and the coating discharge pipe 462; the coating spraying device 47 has a spraying pipe 471, which extends from the coating feed pipe 45 into the coating drum 42, and the spraying pipe 471 is connected to multiple spraying nozzles 472, which can be set downwards; the coating spraying device 47 can achieve accurate delivery of coating liquid through a peristaltic pump.

[0056] The working principle of the coating machine 4 is as follows: When the coating machine 4 is performing coating work, the main controller 1 controls the coating drive motor 43 to drive the coating drum 42 to rotate forward. At the same time, the main controller 1 controls the coating hot air blower 44 to deliver hot air to the coating chamber 411, and the main controller 1 controls each spray nozzle 472 of the coating spraying device 47 to output coating liquid, so that the drug body rolls and is heated in the coating drum 42 and the coating liquid is sprayed on the surface of the drug body, thereby coating the drug body to obtain a semi-finished drug product. When the coating machine 4 outputs the drug body to the dispensing device 5, the main controller 1 controls the coating drive motor 43 to drive the coating drum 42 to rotate in reverse. At this time, the coating discharge groove 460 of the coating discharge assembly 46 hooks the drug body to the coating discharge pipe 462 and sends it from the coating discharge pipe 462 into the dispensing device 5.

[0057] In an embodiment of this utility model, multiple coating deflectors 421 can be fitted to the inner side of the peripheral wall of the coating drum 42; when the coating drum 42 rotates forward, the coating deflectors 421 will agitate the drug body, thereby making the drug body heat evenly. The dryer 3 is lower than each coating machine 4, and the discharge end of the coating discharge pipe 462 of each coating machine 4 is connected to the feed end of the dryer 3 through a connecting pipe 9. The connecting pipe 9 and the discharge end of the coating discharge pipe 462 are rotatably connected. With this arrangement, gravity can be used to transport the semi-finished drug product from the coating machine 4 to the dryer 3.

[0058] In an embodiment of this utility model, the dryer 3 includes a drying chamber 31, a drying drum 32, a drying drive motor 33, and a drying hot air blower 34. The drying chamber 31 has a drying cavity 311, the drying drum 32 is rotatably disposed in the drying cavity 311, and the drying drive motor 33 drives the drying drum 32 to rotate. The drying hot air blower 34 is installed in the drying chamber 31 and is used to deliver hot air to the drying cavity 311. The drying drive motor 33 and the drying hot air blower 34 are electrically connected to the main controller 1. The peripheral wall of the drying drum 32 is hollowed out. A drying feed pipe 35 is rotatably fitted on the feed side of the drying drum 32. The drying feed pipe 35 passes through the center of the feed side of the drying drum 32, and the feed end of the drying feed pipe 35 extends out of the drying drum. The outer casing 31 is used to receive semi-finished pharmaceutical products. The discharge end of the drying feed pipe 35 extends into the drying drum 32. A drying discharge assembly 36 is fixedly fitted on the discharge side of the drying drum 32. The drying discharge assembly 36 includes a drying discharge hook block 361 and a drying discharge pipe 362. The drying discharge pipe 362 passes through the center of the feed side of the drying drum 32, and the discharge end of the drying discharge pipe 362 extends out of the drying casing 31, while the feed end of the drying discharge pipe 362 extends into the drying drum 32. The drying discharge hook block 361 is disposed on the inner wall of the discharge side of the drying drum 32 and connected to the drying discharge pipe 362. A drying discharge groove 360 ​​communicating with the inner cavity of the drying discharge pipe 362 is formed between the drying discharge hook block 361 and the side wall of the drying discharge pipe 362. The working principle of the dryer 3 is as follows: When the dryer 3 is performing drying work, the main controller 1 controls the drying drive motor 33 to drive the drying drum 32 to rotate forward. At the same time, the main controller 1 controls the drying hot air blower 34 to deliver hot air to the drying chamber 311, so that the semi-finished medicine is tumbled and heated in the drying drum 32, thereby drying the semi-finished medicine. When the dryer 3 outputs the semi-finished medicine, the main controller 1 controls the drying drive motor 33 to drive the drying drum 32 to rotate in reverse. At this time, the drying discharge groove 360 ​​of the drying discharge assembly 36 hooks the finished medicine into the drying discharge pipe 362 and outputs the finished medicine from the drying discharge pipe 362.

[0059] In an embodiment of this utility model, a plurality of drying paddles 321 may be fitted on the inner side of the peripheral wall of the drying drum 32; when the drying drum 32 rotates forward, the drying paddles 321 will move the semi-finished medicine so that the semi-finished medicine is heated evenly.

[0060] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A continuous coating equipment, characterized in that: Includes a main controller, a preheater, a dryer, and at least two coating machines; The discharge end of the preheater is connected to the feed end of each coating machine through a material distribution device. The discharge end of each coating machine is connected to the feed end of the dryer. The preheater and the dryer are equipped with online weighing devices for feeding and discharging, respectively. The main controller is electrically connected to the preheater, the dryer, each coating machine, the online weighing devices for feeding and discharging, respectively.

2. The continuous coating equipment as described in claim 1, characterized in that: The preheater includes a preheating chamber, a preheating drum, a preheating drive motor, and a preheating hot air blower. The preheating chamber is equipped with a preheating cavity. The preheating drum is rotatably installed in the preheating cavity and the preheating drive motor drives the preheating drum to rotate. The preheating hot air fan is installed in the preheating chamber and is used to deliver hot air to the preheating cavity. The preheating drive motor and the preheating hot air fan are electrically connected to the main controller. The preheating drum has a perforated peripheral wall. A preheating feed pipe is rotatably fitted on the feed side of the preheating drum, passing through the center of the feed side of the preheating drum, with the feed end of the preheating feed pipe extending outside the preheating chamber and the discharge end of the preheating feed pipe extending into the preheating drum. A preheating discharge assembly is fixedly fitted on the discharge side of the preheating drum, including a preheating discharge hook block and a preheating discharge pipe. The preheating discharge pipe passes through the center of the feed side of the preheating drum, with the discharge end of the preheating discharge pipe extending outside the preheating chamber and the feed end of the preheating discharge pipe extending into the preheating drum. The preheating discharge hook block is set on the inner wall of the discharge side of the preheating drum and connected to the preheating discharge pipe. A preheating discharge groove communicating with the inner cavity of the preheating discharge pipe is formed between the preheating discharge hook block and the side wall of the preheating discharge pipe.

3. The continuous coating equipment as described in claim 2, characterized in that: The inner side of the preheating drum is fitted with multiple preheating plates.

4. The continuous coating equipment as described in claim 2, characterized in that: The material dispensing device includes a material dispensing box, multiple material dispensing baffles, and a material dispensing drive device for driving the rotation of each material dispensing baffle. The material dispensing drive device is electrically connected to the main controller. The material dispensing box has a material dispensing inlet, a material dispensing passage, and multiple material dispensing outlets. Each material dispensing outlet is lower than the material dispensing inlet and is arranged sequentially from top to bottom on the side wall of the material dispensing box. The material dispensing passage is connected to the material dispensing inlet and each material dispensing outlet. Each material dispensing baffle is rotatably arranged in the material dispensing passage and its lower end is hinged to the material dispensing box. Each material dispensing baffle movably blocks each material dispensing outlet and movably isolates the material dispensing passage. When the material dispensing baffle isolates the material dispensing passage, it is inclined. Each coating machine is located below the material distribution device. The discharge end of the preheating discharge pipe of the preheater is rotatably connected to the material distribution inlet of the material distribution device. The feed end of each coating machine is connected to the respective material distribution outlet of the material distribution device through a conveying pipe.

5. The continuous coating equipment as described in claim 1, characterized in that: The coating machine includes a coating machine housing, a coating drum, a coating drive motor, a coating hot air blower, and a coating liquid spraying device; The coating machine housing is provided with a coating chamber, and the coating drum is rotatably installed in the coating chamber and the coating drive motor drives the coating drum to rotate. The coating hot air fan is installed in the coating machine housing and is used to deliver hot air to the coating chamber. The coating drive motor, the coating hot air fan and the coating liquid spraying device are electrically connected to the main controller. The coating drum has a perforated peripheral wall; a coating feed pipe is rotatably fitted on the feed side of the coating drum, passing through the center of the feed side of the coating drum, with the feed end of the coating feed pipe extending outside the coating machine housing and the discharge end of the coating feed pipe extending into the coating drum; a coating discharge assembly is fixedly fitted on the discharge side of the coating drum, including a coating discharge hook block and a coating discharge pipe; the coating discharge pipe passes through the center of the feed side of the coating drum, with the discharge end of the coating discharge pipe extending outside the coating machine housing and the feed end of the coating discharge pipe extending into the coating drum; the coating discharge hook block is set on the inner wall of the discharge side of the coating drum and connected to the coating discharge pipe, and a coating discharge groove communicating with the inner cavity of the coating discharge pipe is formed between the coating discharge hook block and the side wall of the coating discharge pipe. The coating spraying device has a spray pipe that extends from the coating feed pipe into the coating drum, and the spray pipe is connected to multiple spray nozzles.

6. The continuous coating equipment as described in claim 5, characterized in that: The inner side of the coating drum is fitted with multiple coating plates.

7. The continuous coating equipment as described in claim 5, characterized in that: The dryer is located below each coating machine. The discharge end of the coating discharge pipe of each coating machine is connected to the feed end of the dryer through a connecting pipe. The connecting pipe and the discharge end of the coating discharge pipe are rotatably connected.

8. The continuous coating equipment as described in claim 1, characterized in that: The dryer includes a drying chamber, a drying drum, a drying drive motor, and a drying hot air blower. The drying chamber is equipped with a drying cavity, and the drying drum is rotatably installed inside the drying cavity. The drying drive motor drives the drying drum to rotate, and the drying hot air fan is installed in the drying chamber and is used to deliver hot air into the drying cavity. The dryer drive motor and the dryer hot air blower are electrically connected to the main controller; The drying drum has a perforated circumferential wall. A drying feed pipe is rotatably fitted on the feed side of the drying drum, passing through the center of the feed side of the drying drum, with the feed end of the drying feed pipe extending outside the dryer chamber and the discharge end of the drying feed pipe extending into the drying drum. A drying discharge assembly is fixedly fitted on the discharge side of the drying drum, including a drying discharge hook block and a drying discharge pipe. The drying discharge pipe passes through the center of the feed side of the drying drum, with the discharge end of the drying discharge pipe extending outside the dryer chamber and the feed end of the drying discharge pipe extending into the drying drum. The drying discharge hook block is set on the inner wall of the discharge side of the drying drum and connected to the drying discharge pipe. A drying discharge groove communicating with the inner cavity of the drying discharge pipe is formed between the drying discharge hook block and the side wall of the drying discharge pipe.

9. The continuous coating equipment as described in claim 8, characterized in that: The inner side of the peripheral wall of the drying drum is fitted with multiple drying plates.

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