Drying device for traditional Chinese medicinal materials

Abstract

The utility model discloses a drying device for traditional Chinese medicinal materials, which comprises a supercritical treatment tank for discharging partial moisture in the traditional Chinese medicinal materials, a heating device for heating the supercritical treatment tank, a pressure regulator, a drying box and a PLC (programmable logic controller), the supercritical treatment tank is communicated with the pressure regulator, a microwave cavity is arranged in the drying box, and the microwave cavity is communicated with the drying box. The microwave cavity is communicated with the supercritical treatment tank through a pipeline, a control valve is arranged on the pipeline, and a microwave generator is arranged on the outer side wall of the microwave cavity; the PLC is electrically connected with the heating device, the pressure regulator and the microwave generator respectively; the device has the advantages that the supercritical technology and the microwave heating technology are combined, and efficient and energy-saving drying of medicine raw materials and finished products is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical engineering, specifically to a drying device for Chinese medicinal materials. Background Technology

[0002] In the pharmaceutical industry, drying is one of the key steps in drug production and processing. Traditional drying methods, such as hot air drying and vacuum drying, suffer from problems such as long drying times, high energy consumption, and potential loss of active pharmaceutical ingredients. In recent years, microwave drying has attracted attention due to its speed and uniformity; however, using microwave drying alone still has drawbacks such as high energy consumption and difficulty in temperature control. Therefore, developing a highly efficient and energy-saving drying device that can maintain the stability of active pharmaceutical ingredients is of great significance. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a drying device for traditional Chinese medicinal materials, operating in a supercritical fluid temperature range. The combined use of the processing tank, heating device, and pressure regulator allows for the rapid dissolution and removal of some of the moisture within the drug, reducing the energy required for microwave heating and thus lowering energy consumption. After partial moisture removal, the drug, in conjunction with the drying chamber, microwave generator, and waveguide, achieves uniform heating within the drug, preventing localized overheating and loss of active ingredients. Simultaneously, the combined use of the pressure regulator, temperature controller, microwave generator, and PLC controller enables flexible adjustment of the supercritical temperature range. The internal pressure and temperature of the treatment tank, as well as the microwave power in the drying oven, are adjusted to meet the drying requirements of different drugs.

[0004] The technical solution adopted is as follows:

[0005] A drying device for traditional Chinese medicinal materials, the device comprising a supercritical fluid for removing some of the moisture from the medicinal materials. Processing tank, used for supercritical fluid processing The heating device, pressure regulator, drying chamber, and PLC controller for the supercritical water treatment tank. The processing tank is connected to a pressure regulator, and the drying chamber is equipped with a microwave cavity, which is connected to the supercritical fluid source via a pipe. The processing tank is connected, and a control valve is installed on the pipeline. A microwave generator is installed on the outer wall of the microwave cavity. The PLC controller is electrically connected to the heating device, pressure regulator and microwave generator respectively.

[0006] In a further preferred embodiment of the present invention, the device further includes... booster pump and Storage tanks Booster pumps and supercritical The treatment tank is connected, and the pressure regulator is set in place. booster pump and The storage tanks are respectively connected with Booster pump Storage tank connection, storage tanks and The booster pumps are electrically connected to the PLC controller; they are used for PLC controller control. The booster pump is started and stopped, and the pressure regulator ensures the input... Booster pump The gas is within a safe range.

[0007] In a further optimization of the technical solution of this utility model, the pressure regulator is connected to the supply pipeline and the return pipeline respectively. Tank connection; supply pipeline for from Suction from storage tank Gas, return pipes are used to remove excess gas Gas recovery In the storage tank.

[0008] Further optimization of the technical solution of this utility model: supercritical The processing tank is equipped with a device for monitoring supercritical fluid. The first temperature sensor for processing the internal temperature of the tank and for controlling supercritical temperature The temperature controller for the internal temperature of the processing tank has a first temperature sensor connected to the temperature controller via signal connection. The temperature controller is electrically connected to the heating device and also connected to the PLC controller via signal connection.

[0009] Further optimization of the technical solution of this utility model: supercritical The top of the treatment tank is equipped with a device for monitoring supercritical fluid. A pressure sensor is used to monitor pressure changes inside the tank; the pressure sensor is connected to the PLC controller signal; this is used for real-time monitoring of supercritical pressure. The internal pressure of the treatment tank.

[0010] Further optimization of the technical solution of this utility model: supercritical The top of the treatment tank is also used to control supercritical water. A safety relief valve for handling pressure changes inside the tank, connected to a PLC controller; used for drugs in supercritical fluid processing. After the treatment in the tank is completed and before the drug is discharged, the supercritical fluid is subjected to... The treatment tank was depressurized.

[0011] A further preferred embodiment of the present invention is that the side wall of the microwave cavity is provided with a dehumidifying fan for discharging water vapor generated during the drying process, and the dehumidifying fan is electrically connected to the PLC controller; it is used to discharge water vapor from the microwave cavity.

[0012] In a further preferred embodiment of the present invention, a second temperature sensor is provided inside the microwave cavity to monitor the temperature inside the drying oven in real time. The second temperature sensor is connected to the PLC controller. The PLC controller controls the microwave generator based on the real-time monitored temperature inside the microwave cavity, thereby controlling the temperature inside the microwave cavity.

[0013] In a further preferred embodiment of the present invention, the microwave generator is connected to the microwave cavity via a waveguide tube; this waveguide tube is used to transmit the microwaves generated by the microwave generator to the microwave cavity, while simultaneously isolating and protecting the microwave generator from the microwave cavity.

[0014] Further optimization of the technical solution of this utility model: supercritical The bottom of the treatment tank is equipped with a drain outlet, and a drain control valve is installed at the drain outlet; this is used to discharge the drug in the supercritical fluid. Dissolved water in the treatment tank

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] 1. This utility model is at the critical point Processing tanks Booster pump The combination of storage tank, heating device and pressure regulator enables some of the water in the drug to dissolve and be discharged quickly, reducing the energy required for microwave heating and thus reducing energy consumption.

[0017] 2. This invention achieves uniform heating inside the drug through the combination of a drying chamber, a microwave generator, and a waveguide, avoiding the loss of active ingredients due to local overheating.

[0018] 3. This utility model achieves flexible adjustment of supercritical temperature through the cooperation of a pressure regulator, temperature controller, microwave generator, and PLC controller. The internal pressure and temperature of the treatment tank, as well as the microwave power in the drying oven, are adjusted to meet the drying requirements of different drugs. Attached Figure Description

[0019] Figure 1 This is a partial structural diagram of this embodiment;

[0020] Figure 2 This is a diagram showing the connections between the various structures in this embodiment;

[0021] Figure label explanation: 1-Supercritical Processing tank, 2-drying oven, 3- Booster pump, 4-pressure regulator, 5- Storage tank, 6-control valve, 7-drain valve, 8-heating device, 9-first temperature sensor, 10-pressure sensor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown in this embodiment, a drying device for traditional Chinese medicinal materials includes a supercritical fluid drying system. Processing tank 1 is used to process supercritical fluids. Heating device 8 for heating tank 1 Booster pump 3 Storage tank 5, pressure regulator 4, drying oven 2, and PLC controller.

[0025] Used for supercritical The heating device 8 for heating the processing tank 1 can be used to heat the supercritical fluid. The outer wall of the treatment tank 1 is equipped with a jacket, in which hot water or steam is circulated. An electric heating element can also be installed in the jacket to achieve supercritical water treatment. Uniform heating of treatment tank 1 can be achieved by heating device 8, which can be a heating coil installed inside the tank body, and supercritical fluid circulation is used to achieve uniform heating. The interior of processing tank 1 is heated.

[0026] This embodiment employs supercritical... The outer wall of the treatment tank 1 is equipped with a jacket, and an electric heating tube is installed in the jacket to achieve supercritical heating. Uniform heating of treatment tank 1.

[0027] supercritical Processing tank 1 also has a device for monitoring supercritical fluid. The first temperature sensor 9 controls the internal temperature of the processing tank 1 and controls supercritical temperature. Temperature controller for the internal temperature of processing tank 1 and for monitoring supercritical temperature Pressure sensor 10 for processing pressure changes inside tank 1.

[0028] The first temperature sensor 9 is connected to the temperature controller via signal transmission. The temperature controller is electrically connected to the heating device 8 and via signal transmission to the PLC controller. The first temperature sensor 9 monitors the supercritical temperature in real time. The internal temperature of the treatment tank 1 is controlled by a temperature controller, which adjusts the heating device 8 to regulate the supercritical temperature based on the set temperature. Processing tank 1 is heated to ensure supercritical operation. The temperature inside processing tank 1 is at the set temperature.

[0029] In this embodiment, supercritical Processing tank 1 and Booster pump 3 is connected, and pressure regulator 4 is set in Booster pump 3 and The storage tanks 5 are respectively connected to Booster pump 3 and Storage tank 5 is connected, and pressure regulator 4 is connected to the supply pipeline and return pipeline respectively. Storage tank 5 is connected. High pressure in storage tank 5 The gas first passes through pressure regulator 4 to reduce the pressure. gas pressure to Booster pump 3 can safely receive within a certain range, and then enter... Booster pump 3 provides booster pressure to avoid Booster pump 3 and Storage tank 5 is affected by overpressure or underpressure.

[0030] In this embodiment, supercritical The processing tank 1 is also equipped with a pressure sensor 10. The pressure sensor 10 and the pressure regulator 4 are respectively connected to the PLC controller signal. Storage tank 5 and Booster pump 3 is electrically connected to the PLC controller, which controls it. Booster pump 3 and The start-up and shutdown of storage tank 5 are monitored in real time by pressure sensor 10 for supercritical conditions. The pressure changes within tank 1 are processed and fed back to the PLC controller. The PLC then controls the pressure regulator 4 to control the output to... Booster pump 3 The pressure.

[0031] In this embodiment, supercritical The top of treatment tank 1 is also used to control supercritical water. The safety relief valve for handling internal pressure changes in tank 1 is connected to the PLC controller signal. It is used to address supercritical pressure changes after the initial removal of moisture from the drug. Depressurize tank 1.

[0032] supercritical The bottom of the treatment tank 1 is also equipped with a drain outlet, and a drain valve 7 is installed at the drain outlet. The drain valve 7 is connected to the PLC controller signal and is used to discharge the drug in supercritical fluid. The dissolved water in treatment tank 1 is removed.

[0033] The drying oven 2 is equipped with a microwave cavity, and a microwave generator is installed on the outer wall of the microwave cavity. The microwave generator is connected to the microwave cavity through a waveguide tube to uniformly heat the drug inside the microwave cavity.

[0034] In this embodiment, supercritical Processing tank 1 is connected to the microwave cavity via a pipe. A control valve 6 is installed on the pipe and is connected to a PLC controller to ensure supercritical operation. The process tank 1 is located in a high-temperature and high-pressure environment.

[0035] The microwave cavity sidewall is equipped with a dehumidifying fan to remove water vapor generated during the drying process. The dehumidifying fan is electrically connected to the PLC controller and is used to remove water vapor generated during the drying process to keep the inside of the microwave cavity dry.

[0036] The microwave cavity is also equipped with a second temperature sensor that monitors the temperature inside the drying oven 2 in real time. The second temperature sensor is connected to the PLC controller. The PLC controller monitors the internal temperature of the microwave cavity in real time through the second temperature sensor and maintains the internal temperature of the microwave cavity by controlling the microwave generator.

[0037] The specific usage of the drying device for Chinese medicinal materials according to this utility model is as follows: Taking the drying of Drynaria fortunei as an example, fresh Drynaria fortunei is placed in a supercritical fluid... Inside processing tank 1, controlled by a PLC controller. Booster pump 3 and pressure regulator 4 pass through Booster pump 3 will Gas injection supercritical In processing tank 1, the pressure is gradually increased to 8 MPa. The PLC controller controls the heating device 8, which then heats the supercritical fluid. The internal temperature of treatment tank 1 is raised to 45°C, and pressure is maintained for 30 minutes before the supercritical fluid is slowly opened. The safety relief valve of treatment tank 1 is in operation until it reaches supercritical pressure. After the pressure inside treatment tank 1 drops to atmospheric pressure, the supercritical fluid is opened. The control valve 6 of the processing tank 1 moves the above-mentioned Drynaria fortunei medicinal material into the microwave cavity of the drying chamber 2. The microwave generator is controlled by the PLC controller to set the microwave power to 800w and dry for 10 minutes. The microwave is started and the dehumidification fan is turned on intermittently during the drying process to remove the moisture in the material cavity. After the drying is completed, the material is collected and packaged after it cools down to room temperature.

[0038] The dried medicinal material is light, brittle, fluffy, and easily broken.

[0039] The above embodiments are only for illustrating the technical concept of this utility model and should not be used to limit the protection scope of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the protection scope of this utility model.

Claims

1. A drying device for traditional Chinese medicinal materials, characterized in that: The device includes a supercritical fluid for removing some of the water from the drug. Processing tank (1), used for supercritical fluid processing The treatment tank (1) is equipped with a heating device (8), a pressure regulator (4), a drying oven (2), and a PLC controller. It is a supercritical process. The processing tank (1) is connected to the pressure regulator (4), and the drying oven (2) is equipped with a microwave cavity, which is connected to the supercritical fluid via a pipe. The processing tank (1) is connected, and a control valve (6) is provided on the pipeline. A microwave generator is provided on the outer wall of the microwave cavity. The PLC controller is electrically connected to the heating device (8), the pressure regulator (4) and the microwave generator respectively.

2. The drying device for traditional Chinese medicinal materials according to claim 1, characterized in that: The device also includes Booster pump (3) and Storage tank (5), Booster pump (3) and supercritical The treatment tank (1) is connected, and the pressure regulator (4) is set in place. Booster pump (3) and The storage tanks (5) are respectively connected to Booster pump (3) and The storage tank (5) is connected. Storage tank (5) and The booster pump (3) is electrically connected to the PLC controller.

3. A drying device for traditional Chinese medicinal materials according to claim 2, characterized in that: The pressure regulator (4) is connected to the supply pipe and return pipe respectively. The storage tank (5) is connected.

4. A drying device for traditional Chinese medicinal materials according to claim 1, characterized in that: supercritical The processing tank (1) is equipped with a device for monitoring supercritical fluid. The first temperature sensor (9) for the internal temperature of the processing tank (1) and for controlling the supercritical temperature. The temperature controller for the internal temperature of the processing tank (1) is connected to the first temperature sensor (9) via signal connection. The temperature controller is electrically connected to the heating device (8) and via signal connection to the PLC controller.

5. A drying device for traditional Chinese medicinal materials according to claim 1, characterized in that: supercritical The top of the treatment tank (1) is equipped with a device for monitoring supercritical fluid. Pressure sensor (10) for pressure changes inside processing tank (1), and pressure sensor (10) is connected to PLC controller signal.

6. A drying apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that: supercritical The top of the treatment tank (1) is also used to control supercritical water. The safety relief valve for the internal pressure change of the treatment tank (1) is connected to the PLC controller signal.

7. A drying apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that: The microwave cavity sidewall is equipped with a dehumidifying fan for discharging water vapor generated during the drying process, and the dehumidifying fan is electrically connected to the PLC controller.

8. A drying apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that: The microwave cavity is also equipped with a second temperature sensor that monitors the temperature inside the drying oven (2) in real time. The second temperature sensor is connected to the PLC controller signal.

9. A drying device for traditional Chinese medicinal materials according to claim 1, characterized in that: The microwave generator is connected to the microwave cavity via a waveguide.

10. A drying apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that: supercritical The bottom of the treatment tank (1) is provided with a drain outlet, and a drain valve (7) is provided at the drain outlet.

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