Material moisture detection system in dynamic drying process

Abstract

The invention provides a material moisture detection system in a dynamic drying process. The material moisture detection system comprises a material quantifying device, a detection device and a control screen. The material quantifying device is responsible for obtaining a set amount of materials from a discharge port of the dynamic drying equipment and feeding the set amount of materials into the detection device for subsequent moisture detection. The detection device is used for carrying out moisture detection on the set quantity of materials sent by the material quantifying device and sending a detected moisture result to the control screen, so that a user can check and analyze the moisture result conveniently. Therefore, the system can obtain the moisture data of the material in real time in the dynamic drying process, the drying process does not need to be interrupted, and the real drying dynamic process can be reflected.

Description

Technical Field

[0001] The present application relates to the technical field of material drying, and in particular to a material moisture detection system during a dynamic drying process. Background Art

[0002] Dynamic drying equipment is widely used in the fields of medicine, food, and chemical industry. Dynamic drying means that during the drying process, the material is constantly in motion. For example, in a vibrating fluidized bed drying device, the material is constantly rolling and jumping on the bed through vibration, just like being "activated". Hot air passes through the material layer from the bottom and fully contacts the material during the movement of the material, thereby improving the drying efficiency. Compared with static drying equipment, the material is dried more evenly at each point, the drying time is shorter, and the effect is better. However, on the one hand, most of the current dynamic drying equipment is not connected to the moisture detection device, and most of them use offline sampling to determine the moisture content to determine the drying end point. This moisture detection method is time-consuming and labor-intensive, and at the same time it destroys the continuity of the drying process and cannot reflect the true drying dynamics process. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a material moisture detection system during a dynamic drying process, so as to solve the problem that the existing solution for material moisture detection during a dynamic drying process uses an offline sampling method to disrupt the drying process.

[0004] An embodiment of the present application provides a material moisture detection system in a dynamic drying process, comprising: a material quantitative device, a detection device; The interface of the material quantitative device is used to connect to the discharge port of the dynamic drying device. The material quantitative device is used to obtain a set amount of material in the dynamic drying device and send the set amount of material to the detection device; The detection device is used to detect the moisture content of a set amount of material and obtain the moisture content detection result.

[0005] In the above technical solution, the material quantitative device is responsible for obtaining a set amount of material from the discharge port of the dynamic drying equipment, and sending the set amount of material to the detection device for subsequent moisture detection. The detection device detects the moisture content of the set amount of material sent by the material quantitative device, and sends the detected moisture results to the control screen for users to view and analyze. Therefore, the system can obtain the moisture data of the material in real time during the dynamic drying process without interrupting the drying process, and can reflect the real drying dynamics process.

[0006] In some optional embodiments, a control panel is further included, and the control panel is connected to the material quantitative device and the detection device; The control panel is used to control the material dosing device and the detection device, and to display the moisture detection results.

[0007] In the above technical solution, the material quantification device is responsible for obtaining a set amount of material from the discharge port of the dynamic drying equipment, and sending the set amount of material to the detection device for subsequent moisture detection. The detection device detects the moisture content of the set amount of material sent by the material quantification device, and sends the detected moisture results to the control panel for users to view and analyze. As the control center of the system, the control panel is responsible for controlling the operation of the material quantification device and the detection device, as well as displaying the moisture detection results. Therefore, the system can obtain the moisture data of the material in real time during the dynamic drying process without interrupting the drying process. In addition, the system realizes the automation of material sampling, detection and result display, thereby improving work efficiency.

[0008] In some optional embodiments, the material metering device includes a material height sensor and a metering cylinder; The material height sensor is arranged in the quantitative cylinder; the material height sensor is used to sense whether the material in the quantitative cylinder has reached a set height; wherein, when the material in the quantitative cylinder has reached a set height, the amount of the material in the quantitative cylinder is the set amount.

[0009] In some optional embodiments, the material quantitative device further includes: a first automatic valve, a first material guide pipe, a second automatic valve and a second material guide pipe; The first end of the first material guide pipe is provided with an interface, the first end of the first material guide pipe is provided with a first automatic valve, and the second end of the first material guide pipe is connected to the quantitative cylinder through a soft connection; the material height sensor is arranged in the quantitative cylinder, the first end of the second material guide pipe is connected to the bottom of the quantitative cylinder, and the second end of the second material guide pipe is arranged toward the detection device; When obtaining a set amount of material in the dynamic drying equipment, the first automatic valve opens and the second automatic valve closes; when the material in the quantitative cylinder reaches a set height, the first automatic valve closes; when the set amount of material is fed into the detection device, the second automatic valve opens.

[0010] In the above technical solution, the first automatic valve is installed at the first end of the first material guide pipe, that is, at the interface connected to the discharge port of the dynamic drying equipment, to control the inflow of materials and ensure that the materials can enter the quantitative cylinder when needed. The material height sensor is arranged in the quantitative cylinder to sense the height of the material. When the material height reaches the set value, the material height sensor sends a signal to the control panel to control the opening and closing of the valve. The second automatic valve is installed at the first end of the second material guide pipe, that is, at the bottom outlet of the quantitative cylinder, to control the outflow of materials and ensure that the set amount of materials can accurately enter the detection device. This embodiment realizes the automatic quantification and transmission of materials through the cooperation of the automatic valve and the material height sensor.

[0011] In some optional embodiments, the material metering device further comprises: a first shock absorber, a first vibration motor and a cylinder support frame; The quantitative cylinder is connected to the top end of the first shock absorber, and the bottom end of the first shock absorber is connected to the cylinder support frame; the quantitative cylinder is equipped with a first vibration motor; During the falling process of the material into the quantitative cylinder, the first vibration motor vibrates to make the material evenly distributed in the quantitative cylinder.

[0012] In the above technical solution, during the material dropping process, the material is evenly flattened in the quantitative cylinder through the vibration action of the vibration motor, so that the material is at the same plane height, and the material is evenly distributed in the quantitative cylinder, avoiding material accumulation or formation of gaps, and avoiding inaccurate material quantification caused by material accumulation or gaps, thereby affecting the accuracy of moisture detection.

[0013] In some optional embodiments, the material dosing device further comprises: a temperature sensor; A gas inlet is arranged at the bottom of the quantitative cylinder; After a set amount of material is filled in the quantitative cylinder, gas is introduced through the gas inlet to cool the material in the quantitative cylinder; after the temperature sensor senses that the material in the quantitative cylinder has dropped to a set temperature, the set amount of material enters the detection device.

[0014] In the above technical solution, clean gas is introduced into the gas inlet, and air holes are evenly distributed around the bottom of the quantitative cylinder, in order to evenly cool the material and reduce the error of moisture measurement results caused by different temperatures. A temperature sensor is arranged near the gas inlet, and its purpose is to measure the temperature of the material. After the temperature of the material is cooled, the gas inlet stops charging, and the second automatic valve opens at the same time, allowing the material to fall into the detection device.

[0015] In some optional embodiments, the detection device includes: a microwave transmitter and a microwave receiver.

[0016] In the above technical solution, the principle of microwave transmitter and microwave receiver to detect the moisture content of materials is mainly based on the interaction between microwaves and water molecules in the materials. Microwaves are high-frequency electromagnetic waves, and their frequency range is usually between 300MHz and 300GHz, corresponding to a wavelength of 1 meter to 1 mm. Microwaves are penetrating and can penetrate non-conductive materials and interact with molecules in the material during propagation. Water molecules are strong polar molecules with dipole moments, that is, the centers of positive and negative charges of the molecules do not coincide. Under the action of an external electric field, water molecules will produce orientation polarization and displacement polarization, converting the energy of the external electric field into potential energy of water molecules and storing it. At the same time, the dielectric constant and dielectric loss tangent of water molecules are much higher than those of general media. When microwaves pass through materials containing water, water molecules absorb microwave energy, resulting in attenuation of microwave intensity. This energy loss increases with the increase of the water content of the material. The microwave transmitter generates a microwave signal, which is transmitted to the material to be tested through a waveguide. When the microwave signal propagates in the material, it interacts with the water molecules in the material, resulting in attenuation of microwave energy. The microwave receiver receives the microwave signal after attenuation by the material and converts it into an electrical signal for processing. By measuring the attenuation of the microwave signal, the moisture content in the material can be calculated.

[0017] In some optional embodiments, the detection device further comprises: a rotating sample holder, a stepping motor, a fixed plate and a detection support frame; The fixed plate is fixedly mounted on the detection support frame; the rotating shaft of the stepper motor passes through the center of the fixed plate and is connected to the rotating sample holder; the fixed plate is provided with a first station and a second station; The rotating sample holder is a hollow pipe structure with an opening at the top and the bottom. The bottom of the rotating sample holder is in contact with the fixed plate, and the rotating sample holder slides on the fixed plate. When the rotary sample holder rotates to the first position, the top opening of the rotary sample holder is aligned with the discharge port of the material quantitative device; When the rotating sample holder rotates to the second station, the top opening of the rotating sample holder is aligned with the microwave receiver; the microwave receiver is installed on the detection support frame; and the microwave transmitter is arranged below the second station.

[0018] In the above technical solution, when the rotating sample holder rotates to the first station, its top opening is aligned with the second end of the second material guide tube for receiving the material. When the rotating sample holder rotates to the second station, its top opening is aligned with the microwave receiver, and the microwave transmitter is located below the second station for moisture detection of the material.

[0019] In some optional embodiments, a third station is further provided on the fixed plate, and a first opening is provided at the third station of the fixed plate; The detection device also includes a material receiver; the material receiver is arranged below the third workstation.

[0020] In the above technical solution, the rotating sample holder first rotates to the first station, and its top opening is aligned with the second end of the second material guide tube for receiving the material. Then, when the rotating sample holder rotates to the second station, its top opening is aligned with the microwave receiver. At this time, the microwave transmitter is located below the second station for moisture detection of the material. Finally, the rotating sample holder rotates to the third station, and the material in the rotating sample holder falls from the first opening into the material receiver, and the material is collected and recycled by the material receiver, thereby realizing non-destructive moisture detection of the material.

[0021] In some optional embodiments, the detection device further includes a vibration plate, a second vibration motor and a second shock absorber; A second opening is provided at the first station of the fixed plate, and a vibration plate is placed in the second opening; The second vibration motor is arranged on the lower surface of the vibration plate, the lower surface of the vibration plate is also connected to the top end of the second shock absorber, and the bottom end of the second shock absorber is fixedly mounted on the detection support frame.

[0022] In the above technical solution, in the process of the rotating sample container receiving materials, the materials are evenly flattened in the rotating sample container through the vibration action of the second vibration motor, so that the materials are at the same plane height, and the materials are evenly distributed in the rotating sample container, avoiding material accumulation or formation of gaps, and avoiding material accumulation or gaps affecting the accuracy of moisture detection.

[0023] In some optional embodiments, the detection device includes three rotating sample holders.

[0024] In the above technical solution, the three rotary sample holders can ensure the continuous operation of the detection device and improve the detection efficiency. When one of the rotary sample holders receives the material from the material quantitative device at the first station, the other rotary sample holder can perform moisture detection at the second station. At the same time, the last rotary sample holder can collect and recycle the material at the third station. When the rotary sample holder at the first station receives the material dropped out of the material quantitative device, and the detection work at the second station is completed, and the recycling work of the rotary sample holder at the third station is completed, the rotary sample holder at the first station rotates to the second station to perform moisture detection on the next batch of materials, the rotary sample holder at the second station rotates to the third station to recycle the materials that have completed the moisture detection this time, and the rotary sample holder at the third station returns to the first station.

[0025] In some optional embodiments, the second vibration motor, the stepping motor, the microwave transmitter and the microwave receiver are connected to the control screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a material moisture detection system in a dynamic drying process provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a material quantitative device provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a detection device provided in an embodiment of the present application; Figure 4 A top view of the rotating sample holder and the fixed plate provided in the embodiment of the present application; Figure 5 This is a comparison chart of the predicted moisture value and the measured moisture value results provided in the embodiment of the present application.

[0028] Icons: 1-dynamic drying equipment, 2-material quantitative device, 201-interface, 202-first automatic valve, 203-first material guide pipe, 204-soft connection, 205-material height sensor, 206-quantitative cylinder, 207-first shock absorber, 208-first vibration motor, 209-gas inlet, 210-temperature sensor, 211-second automatic valve, 212-second material guide pipe, 213-cylinder support frame, 3-detection device, 301-rotating sample holder, 302-second vibration motor, 303-vibration plate, 304-second shock absorber, 305-stepping motor, 306-material receiver, 307-microwave transmitter, 308-fixed plate, 309-detection support frame, 310-microwave receiver, 311-first station, 312-second station, 313-third station, 4-control panel. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0030] One or more embodiments of the present application involve a material moisture detection system during a dynamic drying process, which can be applied to the fields of medicine, food, and chemical industry, especially to moisture detection during the dynamic drying process of traditional Chinese medicine pills and Chinese medicinal materials.

[0031] Please refer to Figure 1 , Figure 1A schematic structural diagram of a material moisture detection system in a dynamic drying process provided in an embodiment of the present application, the system comprising: a material quantitative device 2, a detection device 3 and a control panel 4; the material quantitative device 2 and the detection device 3 are connected to the control panel 4.

[0032] Among them, the interface 201 of the material quantitative device 2 is used to connect to the discharge port of the dynamic drying equipment 1, the material quantitative device 2 is used to obtain a set amount of material in the dynamic drying equipment 1, and send the set amount of material into the detection device 3; the detection device 3 is used to detect the moisture content of the set amount of material, and send the moisture detection result to the control screen 4; the control screen 4 is used to control the material quantitative device 2 and the detection device 3, and display the moisture detection result.

[0033] Specifically, the control panel can be a device that integrates display, operation and control functions, and is used to monitor and control the status and operation of various devices and systems. The control panel includes a display screen or a touch screen, which is used to display the status information, operation menu and parameter settings of the device or system. The touch screen also allows the user to perform interactive operations such as adjustment, switch, setting, etc. by touching the screen. The controller of the control panel is the core component of the control panel, which is responsible for receiving the user's input instructions and executing the corresponding control logic according to the instructions, thereby realizing the control of the device or system. The control panel also has a communication module and a data interface. The data interface includes various input / output (I / O) interfaces, such as analog input (AI), analog output (AO), digital input (DI), digital output (DO), etc., which are used to connect external devices such as sensors and actuators to realize data transmission and output of control signals. The communication module is used to exchange data and communicate with other devices or systems, such as Ethernet interface, serial interface (such as RS-232, RS-485), etc., and field bus interface (such as Modbus, Profibus, CAN, etc.).

[0034] The control screen may also be a combination of a controller and a touch screen, or a combination of a controller, a display screen and buttons.

[0035] In some optional embodiments, a control screen may not be provided, and respective workflow controls may be implemented through controllers in the material quantification device 2 and the detection device 3. A wireless transmission module may also be provided in the detection device 3 to send the moisture detection result to a mobile terminal (such as a mobile phone, computer, etc.) for display through the wireless transmission module.

[0036] In the embodiment of the present application, the material quantitative device 2 is responsible for obtaining a set amount of material from the discharge port of the dynamic drying equipment 1, and sending the set amount of material to the detection device 3 for subsequent moisture detection. The detection device 3 performs moisture detection on the set amount of material sent by the material quantitative device 2, and sends the detected moisture result to the control screen 4 for the user to view and analyze. As the control center of the system, the control screen 4 is responsible for controlling the operation of the material quantitative device 2 and the detection device 3, and displaying the moisture detection results. Therefore, the system can obtain the moisture data of the material in real time during the dynamic drying process without interrupting the drying process. In addition, the system realizes the automation of material sampling, detection and result display, thereby improving work efficiency.

[0037] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a material dosing device provided in an embodiment of the present application.

[0038] In some optional embodiments, the material metering device 2 includes: a first automatic valve 202, a first material guide pipe 203, a material height sensor 205, a metering cylinder 206, a second automatic valve 211 and a second material guide pipe 212; the first automatic valve 202, the material height sensor 205 and the second automatic valve 211 are connected to the control panel 4.

[0039] Among them, the first end of the first material guide tube 203 is provided with an interface 201, the first end of the first material guide tube 203 is provided with a first automatic valve 202, and the second end of the first material guide tube 203 is connected to the quantitative cylinder 206 through the soft connection 204; the material height sensor 205 is arranged in the quantitative cylinder 206, the first end of the second material guide tube 212 is connected to the bottom of the quantitative cylinder 206, and the second end of the second material guide tube 212 is arranged toward the detection device 3.

[0040] The control panel 4 is used to receive a trigger signal, control the first automatic valve 202 to open, and the material in the dynamic drying equipment 1 begins to enter the quantitative cylinder 206; when the material height sensed by the material height sensor 205 reaches a set height, the first automatic valve 202 is closed, and the second automatic valve 211 is opened, so that a set amount of material enters the detection device 3.

[0041] In the embodiment of the present application, the first automatic valve 202 is installed at the first end of the first material guide tube 203, that is, at the interface 201 connected to the discharge port of the dynamic drying device 1, to control the inflow of materials and ensure that the materials can enter the quantitative cylinder 206 when needed. The material height sensor 205 is arranged in the quantitative cylinder 206 to sense the height of the material. When the material height reaches the set value, the material height sensor 205 sends a signal to the control panel 4 to control the opening and closing of the valve. The second automatic valve 211 is installed at the first end of the second material guide tube 212, that is, at the bottom outlet of the quantitative cylinder 206, to control the outflow of materials and ensure that the set amount of materials can accurately enter the detection device 3. This embodiment realizes the automatic quantification and transmission of materials through the cooperation of the automatic valve and the material height sensor 205.

[0042] In some optional implementations, the material metering device 2 further includes: a first shock absorber 207 , a first vibration motor 208 and a cylinder support frame 213 ; the first vibration motor 208 is connected to the control panel 4 .

[0043] Among them, the quantitative cylinder 206 is connected to the top of the first shock absorber 207, and the bottom end of the first shock absorber 207 is connected to the cylinder support frame 213; a first vibration motor 208 is installed on the quantitative cylinder 206; the vibration motor is used to vibrate the first vibration motor 208 during the falling process of the material entering the quantitative cylinder 206, so that the material is evenly distributed in the quantitative cylinder 206.

[0044] In the embodiment of the present application, during the material dropping process, the material is evenly flattened in the quantitative cylinder 206 through the vibration action of the vibration motor, so that the material is at the same plane height, and the material is evenly distributed in the quantitative cylinder 206, thereby avoiding material accumulation or formation of gaps, and avoiding inaccurate material quantification caused by material accumulation or gaps, thereby affecting the accuracy of moisture detection.

[0045] In some optional embodiments, the material dosing device 2 further includes: a temperature sensor 210; the temperature sensor 210 is connected to the control panel 4. A gas inlet 209 is provided at the bottom of the dosing cylinder 206; the gas inlet 209 is used to pass gas to cool the material in the dosing cylinder 206.

[0046] The control panel 4 is used to close the first automatic valve 202 when the material height sensed by the material height sensor 205 reaches a set height; after closing the first automatic valve 202, when the temperature sensor 210 senses that the material in the quantitative cylinder 206 drops to a set temperature, the second automatic valve 211 is opened to allow a set amount of material to enter the detection device 3.

[0047] In the embodiment of the present application, clean gas is introduced into the gas inlet 209, and air holes are evenly distributed around the bottom of the quantitative cylinder 206, in order to evenly cool the material and reduce the error of the moisture measurement result caused by different temperatures. A temperature sensor 210 is arranged near the gas inlet 209, and its purpose is to measure the temperature of the material. After the temperature of the material is cooled, the gas inlet 209 stops charging, and the second automatic valve 211 opens, so that the material falls into the detection device 3.

[0048] Please refer to Figure 3 , Figure 3 A schematic diagram of the structure of a detection device provided in an embodiment of the present application.

[0049] In some optional embodiments, the detection device 3 includes: a microwave transmitter 307 and a microwave receiver 310 .

[0050] In the embodiment of the present application, the principle of microwave transmitter 307 and microwave receiver 310 to detect the moisture content of the material is mainly based on the interaction between microwaves and water molecules in the material. Microwaves are a high-frequency electromagnetic wave, and their frequency range is usually between 300MHz and 300GHz, corresponding to a wavelength of 1 meter to 1 mm. Microwaves are penetrating and can penetrate non-conductive materials and interact with molecules in the material during propagation. Water molecules are strong polar molecules with dipole moments, that is, the centers of positive and negative charges of the molecules do not coincide. Under the action of an external electric field, water molecules will produce orientation polarization and displacement polarization, converting the energy of the external electric field into potential energy of water molecules and storing it. At the same time, the dielectric constant and dielectric loss tangent of water molecules are much higher than those of general media. When microwaves pass through materials containing water, water molecules absorb microwave energy, resulting in attenuation of microwave intensity. This energy loss increases with the increase of the water content of the material. The microwave transmitter 307 generates a microwave signal, which is transmitted to the material to be tested through a waveguide. When the microwave signal propagates in the material, it interacts with the water molecules in the material, resulting in attenuation of microwave energy. The microwave receiver 310 receives the microwave signal after the material attenuation and converts it into an electrical signal for processing. By measuring the attenuation degree of the microwave signal, the moisture content in the material can be calculated.

[0051] In some optional embodiments, the detection device 3 includes: a near-infrared spectrometer. The near-infrared spectrometer uses near-infrared spectroscopy technology to measure the absorption and scattering of near-infrared light by the material to estimate the moisture content. It is suitable for moisture detection of various materials and has the characteristics of non-destructive, rapid and accurate.

[0052] Please refer to Figure 4 , Figure 4 A top view of the rotating sample holder and fixed plate provided in an embodiment of the present application.

[0053] In some optional embodiments, the detection device 3 further includes: a rotating sample holder 301 , a stepping motor 305 , a fixed plate 308 and a detection support frame 309 .

[0054] Among them, the fixed plate 308 is fixedly installed on the detection support frame 309; the rotating shaft of the stepper motor 305 passes through the center of the fixed plate 308 and is connected to the rotating sample holder 301; the fixed plate 308 is provided with a first station 311 and a second station 312; the rotating sample holder 301 is a hollow pipe structure with an opening at the top and a bottom, the bottom end of the rotating sample holder 301 contacts the fixed plate 308, and the rotating sample holder 301 slides on the fixed plate 308; when the rotating sample holder 301 rotates to the first station 311, the top opening of the rotating sample holder 301 is aligned with the second end of the second material guide tube 212; when the rotating sample holder 301 rotates to the second station 312, the top opening of the rotating sample holder 301 is aligned with the microwave receiver 310; the microwave receiver 310 is installed on the detection support frame 309; the microwave transmitter 307 is arranged below the second station 312.

[0055] In the embodiment of the present application, when the rotating sample holder 301 rotates to the first station 311, its top opening is aligned with the second end of the second material guide tube 212 for receiving the material. When the rotating sample holder 301 rotates to the second station 312, its top opening is aligned with the microwave receiver 310, and the microwave transmitter 307 is located below the second station 312 for detecting the moisture content of the material.

[0056] In some optional embodiments, a third station 313 is further provided on the fixed plate 308 , and a first opening is provided at the third station 313 of the fixed plate 308 ; the detection device 3 further includes a material receiver 306 ; and the material receiver 306 is provided below the third station 313 .

[0057] In the embodiment of the present application, the rotating sample holder 301 first rotates to the first station 311, and its top opening is aligned with the second end of the second material guide tube 212 for receiving the material. Then, when the rotating sample holder 301 rotates to the second station 312, its top opening is aligned with the microwave receiver 310. At this time, the microwave transmitter 307 is located below the second station 312 for moisture detection of the material. Finally, the rotating sample holder 301 rotates to the third station 313, and the material in the rotating sample holder 301 falls from the first opening into the material receiver 306. The material is collected and recycled by the material receiver 306, thereby realizing non-destructive moisture detection of the material.

[0058] In some optional embodiments, the detection device 3 includes three rotating sample holders 301 .

[0059] In the embodiment of the present application, three rotating sample holders 301 can ensure the continuous operation of the detection device 3 and improve the detection efficiency. When one of the rotating sample holders 301 receives the material from the material quantitative device 2 at the first station 311, another rotating sample holder 301 can perform moisture detection at the second station 312, and at the same time, the last rotating sample holder 301 can collect and recycle the material at the third station 313. When the rotating sample holder 301 at the first station 311 receives the material dropped out of the material quantitative device 2, and the detection work at the second station 312 is completed, and the recycling work of the rotating sample holder 301 at the third station 313 is completed, the rotating sample holder 301 at the first station 311 rotates to the second station 312 to perform moisture detection of the next batch of materials, the rotating sample holder 301 at the second station 312 rotates to the third station 313 to recycle the materials that have completed the moisture detection this time, and the rotating sample holder 301 at the third station 313 returns to the first station 311.

[0060] In some optional embodiments, the detection device 3 further includes a vibration plate 303, a second vibration motor 302 and a second shock absorber 304; Among them, a second opening is set at the first workstation 311 of the fixed plate 308, and the vibration plate 303 is placed in the second opening; the second vibration motor 302 is set on the lower surface of the vibration plate 303, and the lower surface of the vibration plate 303 is also connected to the top end of the second shock absorber 304, and the bottom end of the second shock absorber 304 is fixedly mounted on the detection support frame 309.

[0061] In the embodiment of the present application, during the process of the rotating sample container 301 receiving the material, the material is evenly flattened in the rotating sample container 301 through the vibration action of the second vibration motor 302, so that the material is at the same plane height, and the material is evenly distributed in the rotating sample container 301, thereby avoiding the accumulation of material or the formation of gaps, and avoiding the accumulation of material or gaps affecting the accuracy of moisture detection.

[0062] In some optional implementations, the second vibration motor 302 , the stepping motor 305 , the microwave transmitter 307 , and the microwave receiver 310 are connected to the control panel 4 .

[0063] Please refer to Figure 5 , Figure 5 The system of this embodiment is used to detect the moisture content of Liuwei Dihuang Pills and concentrated pills during the drying process.

[0064] Firstly, through data calibration and linear fitting, a moisture content prediction model for water pills and concentrated pills under different thicknesses and drying temperatures was established to predict the overall moisture content of water pills and concentrated pills.

[0065] A moisture content prediction model is established by collecting a large amount of moisture signal value data. The collected moisture signal values ​​cover the initial moisture content of the pills to the target moisture content. These data are used to establish a moisture content prediction model using Excel.

[0066] Table 1 below shows the results of the water content prediction model for traditional Chinese medicine pills. 2 The results show that the moisture prediction model has good results. The predicted moisture value is compared with the measured moisture value. Figure 5 As shown in the figure, the model measurement values ​​have a good fit with the experimental values, which verifies the reliability of the moisture prediction model established by the system for microwave nondestructive testing.

[0067] Table 1 Water content prediction model results

[0068] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0069] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0070] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0071] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0072] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A material moisture detection system in a dynamic drying process, characterized in that: include: Material quantitative device and detection device; The interface of the material quantitative device is used to communicate with the discharge port of the dynamic drying device, and the material quantitative device is used to obtain a set amount of material in the dynamic drying device and send the set amount of material into the detection device; The detection device is used to detect the moisture content of a set amount of material to obtain a moisture content detection result.

2. The system according to claim 1, characterized in that It also includes a control panel, which is connected to the material quantitative device and the detection device; The control panel is used to control the material quantitative device and the detection device, and to display the moisture detection result.

3. The system according to claim 1, characterized in that The material quantitative device comprises a material height sensor and a quantitative cylinder; The material height sensor is arranged in the quantitative cylinder; the material height sensor is used to sense whether the material in the quantitative cylinder has reached a set height; wherein, when the material in the quantitative cylinder has reached a set height, the amount of the material in the quantitative cylinder is the set amount.

4. The system according to claim 3, characterized in that The material quantitative device further comprises: a first automatic valve, a first material guide pipe, a second automatic valve and a second material guide pipe; The first end of the first material guide pipe is provided with the interface, the first end of the first material guide pipe is provided with the first automatic valve, and the second end of the first material guide pipe is connected to the quantitative cylinder through a soft connection; the material height sensor is arranged in the quantitative cylinder, the first end of the second material guide pipe is connected to the bottom of the quantitative cylinder, and the second end of the second material guide pipe is arranged toward the detection device; When obtaining a set amount of material in the dynamic drying equipment, the first automatic valve opens and the second automatic valve closes; when the material in the quantitative cylinder reaches a set height, the first automatic valve closes; when the set amount of material is fed into the detection device, the second automatic valve opens.

5. The system according to claim 3, characterized in that The material quantitative device also includes: a first shock absorber, a first vibration motor and a cylinder support frame; The quantitative cylinder is connected to the top end of the first shock absorber, and the bottom end of the first shock absorber is connected to the cylinder support frame; the first vibration motor is installed on the quantitative cylinder; During the process of the material falling into the quantitative cylinder, the first vibration motor vibrates to make the material evenly distributed in the quantitative cylinder.

6. The system according to claim 3, characterized in that The material quantitative device also includes: a temperature sensor; A gas inlet is provided at the bottom of the quantitative cylinder; After a set amount of material is filled in the quantitative cylinder, gas is introduced through the gas inlet to cool the material in the quantitative cylinder; after the temperature sensor senses that the material in the quantitative cylinder has dropped to a set temperature, the set amount of material enters the detection device.

7. The system according to claim 1, characterized in that The detection device comprises: a microwave transmitter and a microwave receiver.

8. The system according to claim 7, characterized in that The detection device also includes: a rotating sample holder, a stepping motor, a fixed plate and a detection support frame; The fixed plate is fixedly mounted on the detection support frame; the rotating shaft of the stepper motor passes through the center of the fixed plate and is connected to the rotating sample holder; the fixed plate is provided with a first station and a second station; The rotating sample holder is a hollow pipe structure with an opening at the top and the bottom, the bottom of the rotating sample holder is in contact with the fixed plate, and the rotating sample holder slides on the fixed plate; When the rotating sample holder rotates to the first station, the top opening of the rotating sample holder is aligned with the discharge port of the material quantitative device; When the rotating sample holder rotates to the second station, the top opening of the rotating sample holder is aligned with the microwave receiver; the microwave receiver is installed on the detection support frame; and the microwave transmitter is arranged below the second station.

9. The system according to claim 8, characterized in that The fixed plate is also provided with a third station, and a first opening is provided at the third station of the fixed plate; The detection device also includes a material receiver; the material receiver is arranged below the third workstation.

10. The system according to claim 8, characterized in that The detection device also includes a vibration plate, a second vibration motor and a second shock absorber; A second opening is provided at the first station of the fixed plate, and the vibration plate is placed in the second opening; The second vibration motor is arranged on the lower surface of the vibration plate, the lower surface of the vibration plate is also connected to the top end of the second shock absorber, and the bottom end of the second shock absorber is fixedly mounted on the detection support frame.

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