Conduction type traditional Chinese medicinal material drying machine and self-adaptive drying method

Abstract

The invention discloses a conduction type traditional Chinese medicinal material drying machine and a self-adaptive drying method.The drying machine comprises a drying box body, a fan assembly, a heat exchanger and a controller, at least two drying cavities are distributed in the drying box body in the vertical direction, and each drying cavity comprises a chain type conveying mesh belt, a plurality of non-equal-diameter gears and a dynamic weighing machine; the non-equal-diameter gear is arranged on the chain type conveying mesh belt so as to drive the chain type conveying mesh belt to operate; the dynamic weighing machine is arranged on the chain type conveying mesh belt so as to carry out isometric weighing on the entered traditional Chinese medicinal materials; according to the method, the real-time state of the traditional Chinese medicinal materials in the drying process is monitored, the drying condition can be adaptively adjusted according to the monitored real-time state of the traditional Chinese medicinal materials, insufficient drying or excessive drying is avoided, the drying effect is improved, adaptive adjustment is conducted on different traditional Chinese medicinal materials according to different target states of the traditional Chinese medicinal materials, and the drying efficiency is improved. And meanwhile, the device is also suitable for different batches of same traditional Chinese medicinal materials with different initial states such as water content, so that the output is consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of traditional Chinese medicine drying equipment, and more specifically, to a conduction-type traditional Chinese medicine dryer and an adaptive drying method. Background Art

[0002] During the harvesting and storage processes, Chinese herbal medicines are prone to mildew, insect infestation, browning, etc., and are not easy to be stored for a long time and retain their medicinal properties. The drying and processing process of Chinese herbal medicines plays a crucial role in the development and medicinal use of Chinese herbal medicines, and the quality of the drying directly affects the medicinal properties and quality of Chinese herbal medicines. Therefore, the research on existing Chinese herbal medicine drying technologies and equipment has far-reaching significance for the development of the Chinese herbal medicine industry.

[0003] The traditional drying methods of Chinese herbal medicines mainly include air-drying, sun-drying, baking, etc. The traditional baking method mainly uses a drying room, which is mainly made of bricks and cement rooms, and generates heat through the combustion of firewood, etc. for drying. The drying cost is low and the drying capacity is large, but the drying efficiency is low and the product quality is poor. Modern drying mainly uses machinery as the main means, and artificially controls the conditions required for drying Chinese herbal medicines. On the premise of being able to better preserve the medicinal properties, the quality of the herbs, the drying efficiency, and the yield of the herbs are improved.

[0004] The drying and baking conditions of different types of Chinese herbal medicines are different, and the conditions required for drying the same type of Chinese herbal medicines in different batches are also different due to differences in water content and other states. Therefore, in modern Chinese herbal medicine drying technologies mainly using machinery, how to achieve a traditional Chinese medicine dryer that can adaptively adjust the drying conditions according to the real-time state of Chinese herbal medicines is an important research direction. Summary of the Invention

[0005] In view of the problems raised in the above background art, the purpose of the present invention is to provide a conduction-type traditional Chinese medicine dryer and an adaptive drying method, which can adaptively adjust the drying conditions according to the real-time state of Chinese herbal medicines during drying, so as to improve the quality of dried Chinese herbal medicines.

[0006] To achieve the above purpose, in the technical solution of the present invention, on the one hand, a conduction-type traditional Chinese medicine dryer is provided. The conduction-type traditional Chinese medicine dryer includes a drying box body, a fan assembly, a heat exchanger, and a controller. The drying box body is vertically distributed with at least two drying chambers; the fan assembly is used for drawing air to generate an air flow, and the fan assembly has at least two centrifugal fans; the heat exchanger heats the air flow generated by the fan assembly to form a hot air flow, and the heat exchanger has at least two inlets; the controller is used to control and adjust the operation of the drying box body, the fan assembly, and the heat exchanger.

[0007] Further, the drying chamber includes a chain conveyor belt, a plurality of non-equal-diameter gears, and a dynamic weighing machine. The chain conveyor belt has a first side and a second side, and the chain conveyor belt is disposed in the drying chamber. The chain conveyor belt conveys in the direction from the first side to the second side, wherein the first side and the second side of the chain conveyor belts in adjacent drying chambers are inverted in sequence; the non-equal-diameter gear has a first half and a second half, and the non-equal-diameter gear is disposed on the chain conveyor belt to drive the chain conveyor belt to operate. The tooth heights of the first half and the second half of the non-equal-diameter gear are different to achieve the up-and-down jitter when the chain conveyor belt operates; the dynamic weighing machine is disposed above the first side of the chain conveyor belt to perform equal-volume weighing on the incoming Chinese medicinal materials.

[0008] Further, the chain conveyor belt includes a plurality of transmission shafts, a plurality of transmission chains, and a first driving motor. The transmission shafts are disposed on the non-equal-diameter gears; the transmission chains are respectively connected to the transmission shafts and the non-equal-diameter gears; the first driving motor is used to drive the transmission chains to drive the transmission shafts and the non-equal-diameter gears to rotate.

[0009] Further, ventilation mesh holes are formed on at least two opposite chamber walls inside the drying chamber. The ventilation mesh holes are respectively formed in the upper and lower parts of the opposite chamber walls. Feeding openings are formed above the first side and below the second side of the chain conveyor belt in the drying chamber.

[0010] Further, the drying box body further includes at least two air inlet chambers and an air exhaust chamber. The air inlet chambers and the air exhaust chamber are respectively communicated with the drying chamber through the ventilation mesh holes. The hot air flow enters the drying chamber through the air inlet chambers and is discharged through the air exhaust chamber to achieve hot air drying; the air exhaust chambers are communicated with each other; an air inlet is formed on one side of the air inlet chamber. The fan assembly, the heat exchanger, and the air inlet are connected through pipelines to introduce the hot air flow into the air inlet. An air outlet is provided on the side of the air exhaust chamber away from the air inlet. A plurality of arc-shaped air guide plates are installed inside the air inlet chambers and the air exhaust chamber to guide the hot air flow.

[0011] Further, the dynamic weighing machine includes a mounting plate, a fixing plate, at least two drive shafts, a conveyor belt, a weighing sensor, a multi-axis synchronous motor, and a slider; the mounting plate is provided with at least two notches; the fixing plate is provided with at least two sliding grooves in the vertical direction; the drive shaft has a first end and a second end, and the drive shaft is rotatably installed in the notch of the mounting plate; the conveyor belt is sleeved and installed outside the drive shaft and the mounting plate and is driven by the drive shaft to operate for conveying Chinese medicinal materials; the weighing sensor has a sensing surface, the weighing sensor is fixedly installed on the fixing plate and is located below the mounting plate, and the sensing surface of the weighing sensor contacts the lower surface of the mounting plate; the multi-axis synchronous motor is arranged at the first end of the drive shaft to drive the drive shaft to operate; the slider is fixedly connected to the second end of the drive shaft and is slidably installed in the sliding groove.

[0012] Further, in the technical solution of the present invention, a conductive Chinese medicinal material dryer further includes at least one feeding conveyor belt for conveying Chinese medicinal materials into the drying chamber at the uppermost end inside the drying box; the feeding conveyor belt includes at least one material equalizer and a second driving motor, the material equalizer is arranged on the feeding conveyor belt for evenly conveying Chinese medicinal materials; the second driving motor is arranged on the feeding conveyor belt to drive the feeding conveyor belt to operate.

[0013] On the other hand, in the technical solution of the present invention, a drying method is also provided, which specifically includes the following steps:

[0014] S1. Feeding:

[0015] The Chinese medicinal materials to be dried are conveyed through the feeding conveyor belt, and among them, the Chinese medicinal materials conveyed are evenly distributed by the material equalizer on the feeding conveyor belt.

[0016] S2. Drying:

[0017] S2-1. Pre-drying:

[0018] The Chinese medicinal materials conveyed through the feeding conveyor belt are first conveyed to the drying chamber at the uppermost end inside the drying box.

[0019] When the Chinese medicinal materials fall from the feeding conveyor belt into the drying chamber, they first fall onto the dynamic weighing machine located below the material passing opening, and then the dynamic weighing machine conveys the Chinese medicinal materials to the lower chain conveyor belt through the conveyor belt.

[0020] When the total amount of Chinese medicinal materials on the dynamic weighing machine maintains dynamic balance, the controller records the weight of the Chinese medicinal materials sensed by the weighing sensor as the first weight of the Chinese medicinal materials, and calculates and records the moisture content based on the recorded first weight of the Chinese medicinal materials and the target weight of the Chinese medicinal materials after drying.

[0021] The Chinese medicinal materials are conveyed inside the drying chamber through a chain conveyor belt and dried by hot air conduction therein.

[0022] The Chinese medicinal materials are conveyed by the chain conveyor belt from the feeding port below its second side to the lower drying chamber.

[0023] S2-2. Adjust drying:

[0024] The Chinese medicinal materials conveyed from the upper drying chamber first fall onto the dynamic weighing machine located below the feeding port. The dynamic weighing machine then conveys the Chinese medicinal materials to the lower chain conveyor belt through a conveyor belt.

[0025] When the total amount of Chinese medicinal materials on the dynamic weighing machine maintains a dynamic balance, the controller records the weight two of the Chinese medicinal materials sensed by the weighing sensor. Based on the recorded weight two of the Chinese medicinal materials and weight one of the Chinese medicinal materials, the moisture content two is calculated and recorded. At the same time, the drying speed one is calculated and recorded.

[0026] Based on the weight two of the Chinese medicinal materials, the drying speed one, and the target weight of the Chinese medicinal materials, it is judged whether it is necessary to change the hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt.

[0027] When the controller calculates and judges that the target weight of the Chinese medicinal materials cannot be achieved until the end under the current hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt, the controller increases the hot air temperature and hot air flow rate to raise the drying temperature, and reduces the conveying speed of the chain conveyor belt to increase the drying time.

[0028] When the controller calculates and judges that the Chinese medicinal materials will be over-dried until the end under the current hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt, the controller reduces the hot air temperature and hot air flow rate to lower the drying temperature, and increases the conveying speed of the chain conveyor belt to reduce the drying time.

[0029] The Chinese medicinal materials are conveyed inside the drying chamber through a chain conveyor belt and dried by controlling and adjusting hot air conduction through the controller.

[0030] The Chinese medicinal materials are conveyed by the chain conveyor belt from the feeding port below its second side to the lower drying chamber.

[0031] The drying conditions are adjusted and drying are repeated according to the number of drying chambers.

[0032] S3. Discharge:

[0033] The Chinese medicinal materials dried by the lowermost drying chamber are output from the feeding port below its second side by the chain conveyor belt.

[0034] Effective gain:

[0035] In summary, according to a conductive Chinese herbal medicine dryer and an adaptive drying method of the present invention, by monitoring the real-time state of Chinese herbal medicine during the drying process and being able to adaptively adjust the drying conditions according to the monitored real-time state of the Chinese herbal medicine, insufficient drying or over-drying is avoided to improve the drying effect. Among them, different Chinese herbal medicines are adaptively adjusted according to their different target states, and it is also applicable to different batches of the same Chinese herbal medicine with different initial states such as water content to make their outputs consistent.

[0036] Other features and advantages of the present invention will be described in the subsequent specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of a conductive Chinese herbal medicine dryer according to an embodiment of the present invention Figure 1 ;

[0038] Figure 2 is a schematic structural diagram of a conductive Chinese herbal medicine dryer according to an embodiment of the present invention Figure 2 ;

[0039] Figure 3 is a schematic structural diagram of a conductive Chinese herbal medicine dryer according to an embodiment of the present invention Figure 3 ;

[0040] Figure 4 is a schematic structural diagram of a chain conveyor net belt according to an embodiment of the present invention;

[0041] Figure 5 is for Figure 4 a magnified structural view of part of area X in

[0042] Figure 6 is a schematic structural diagram of a non-equal-diameter gear according to an embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of the working principle of a non-equal-diameter gear according to an embodiment of the present invention;

[0044] Figure 8 is a partial schematic structural diagram of a drying cavity according to an embodiment of the present invention Figure 1 ;

[0045] Figure 9 is a partial schematic structural diagram of a drying cavity according to an embodiment of the present invention Figure 2 ;

[0046] Figure 10 is a schematic structural diagram of a dynamic weighing machine according to an embodiment of the present invention;

[0047] Figure 11It is a schematic structural diagram of a conductive Chinese herbal medicine dryer according to an embodiment of the present invention Figure 4 ;

[0048] Figure 12 It is a flowchart of a drying method according to an embodiment of the present invention Specific embodiments

[0049] Without loss of generality, embodiments of the present invention provide a conductive Chinese herbal medicine dryer and an adaptive drying method. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings

[0050] Figure 1 、 Figure 2 and Figure 3 are respectively schematic structural diagrams of a conductive Chinese herbal medicine dryer according to an embodiment of the present invention from different perspectives. As Figure 1 shown, the conductive Chinese herbal medicine dryer includes a drying box body A1. At least two drying chambers A101 are distributed in the drying box body A1 along the vertical direction. The drying chamber A101 is a cavity space for drying Chinese herbal medicines. As Figure 2 shown, a fan assembly A2, a heat exchanger A3 and a controller A4. The fan assembly A2 is used to draw air to generate an air flow. The fan assembly A2 has at least two centrifugal fans A201 to respectively draw air for at least two drying chambers A101 to work. The heat exchanger A3 heats the air flow generated by the fan assembly A2 to form a hot air flow. The heat exchanger A3 has at least two inlets A301 to be respectively connected to at least two centrifugal fans A201. The controller A4 is connected to the drying box body A1, the fan assembly A2 and the heat exchanger A3 to control and adjust the operation of the drying box body A1, the fan assembly A2 and the heat exchanger A3

[0051] As Figure 3 shown, the drying chamber A101 includes a chain conveyor belt A102, wherein Figure 4It is a schematic structural diagram of the chain conveyor belt A102. The chain conveyor belt A102 has a first side A102a and a second side A102b. The chain conveyor belt A102 is arranged in the drying chamber A101 and conveys along the direction from the first side A102a to the second side A102b. Among them, the first side A102a and the second side A102b of the chain conveyor belt A102 in adjacent drying chambers A101 are inverted in sequence; the drying chamber A101 further includes a dynamic weighing machine A104, and the dynamic weighing machine A104 is arranged above the first side A102a of the chain conveyor belt A102 to perform equal-volume weighing on the incoming Chinese medicinal materials. It should be noted that when the Chinese medicinal materials enter the drying chamber A101, they first fall onto the dynamic weighing machine A104, and then the dynamic weighing machine A104 conveys the Chinese medicinal materials to the chain conveyor belt A102 below. When the total amount of Chinese medicinal materials on the dynamic weighing machine A104 maintains a dynamic balance, the controller A4 records the weight of the Chinese medicinal materials on the dynamic weighing machine A104. Since the Chinese medicinal materials are evenly conveyed and the area of the conveying surface of the dynamic weighing machine A104 is certain, the process of recording the weight of the Chinese medicinal materials can be regarded as equal-volume weighing.

[0052] Figure 5 is a Figure 4 magnified structural diagram of part of area X in Figure 5 As shown, the drying chamber A101 further includes a plurality of non-equal-diameter gears A103. Figure 6 is a schematic structural diagram of the non-equal-diameter gear A103. Among them, the non-equal-diameter gear A103 has a first half A103a and a second half A103b. The non-equal-diameter gear A103 is arranged on the chain conveyor belt A102 to drive the chain conveyor belt A102 to operate. Among them, the tooth heights of the first half A103a and the second half A103b of the non-equal-diameter gear A103 are different to realize the up-and-down jitter of the chain conveyor belt A102 during operation. It should be noted that the tooth height of the side with the higher tooth height in the first half A103a and the second half A103b is greater than the height of the chain plate of the chain conveyor belt A102. As Figure 7 shown, when the non-equal-diameter gear A103 rotates to the side with the higher tooth height and contacts the chain conveyor belt A102, it will lift the chain conveyor belt A102. When the non-equal-diameter gear A103 rotates to the side with the lower tooth height and contacts the chain conveyor belt A102, the chain conveyor belt A102 will move downward. The up-and-down movement of the chain conveyor belt A102 further realizes its up-and-down jitter function during operation. The up-and-down jitter of the chain conveyor belt A102 during operation can further drive the Chinese medicinal materials on the chain conveyor belt A102 to vibrate. The Chinese medicinal materials transported and vibrated and turned over on the chain conveyor belt A102 during drying can improve the drying effect.

[0053] Specifically, further referring to Figure 5, the chain conveyor mesh belt A102 includes a plurality of drive shafts A102-1, a plurality of drive chains A102-2, and a first drive motor A102-3. The drive shafts A102-1 are arranged on the non-equal-diameter gears A103. The plurality of drive chains A102-2 are respectively connected to the drive shafts A102-1 and the non-equal-diameter gears A103. The first drive motor A102-3 is used to drive the drive chains A102-2 to drive the drive shafts A102-1 and the non-equal-diameter gears A103 to rotate.

[0054] Figure 8 and Figure 9 are respectively partial structural schematic diagrams of the drying cavity A1 according to an embodiment of the present invention from different perspectives, such as Figure 8 and Figure 9As shown, ventilation mesh holes A105 are provided on at least two opposite chamber walls inside the drying chamber A101 within the drying cavity A1. The ventilation mesh holes A105 are respectively provided at the upper and lower parts of the opposite chamber walls. The present invention adopts hot air conduction drying, that is, the Chinese medicinal materials are dried by hot air flow. The ventilation mesh holes A105 are used for air intake and exhaust during the hot air conduction drying process; feeding ports A106 are provided above the first side A102a and below the second side A102b of the chain conveyor belt A102 within the drying chamber A101. The feeding ports A106 connect the multiple drying chambers A101 distributed vertically within the drying box A1 respectively. The Chinese medicinal materials are dried one by one inside different drying chambers A101 through the feeding ports A106; the drying cavity A1 also includes at least two air intake chambers A107 and exhaust chambers A108. The air intake chambers A107 and the exhaust chambers A108 are respectively connected to the drying chamber A101 through the ventilation mesh holes A105. Among them, the hot air flow enters the drying chamber A101 through the air intake chambers A107 and is discharged through the exhaust chambers A108 to achieve hot air drying; the exhaust chambers A108 are interconnected with each other; an air inlet A109 is provided on one side of the air intake chamber A107. Further, the fan assembly A2, the heat exchanger A3 and the air inlet A109 are connected through pipelines to introduce the hot air flow into the air inlet A109; an air outlet A110 is provided on the side of the exhaust chamber A108 away from the air inlet A109. A plurality of arc-shaped air guide plates A111 are installed inside the air intake chambers A107 and the exhaust chambers A108 to guide the hot air flow; it should be noted that the ventilation mesh holes A105 provided in the upper and lower structures on the opposite chamber walls inside the drying chamber A101 and the air inlet A109 and the air outlet A110 provided far apart from each other are intended to achieve the maximum air flow diversion inside the drying chamber A101. The hot air flow first enters through the air inlet A109, is guided by the air intake chamber A107 and enters the drying chamber A101 through the ventilation mesh hole A105 provided at the lower (upper) part, and then enters the exhaust chamber A108 through the other ventilation mesh hole A105 provided at the upper (lower) part on the opposite surface, and is discharged through the air outlet A110 on the side of the exhaust chamber A108 away from the air inlet A109, so that the hot air flow passes through the internal space of the drying chamber A101 to the greatest extent to improve the heat conduction drying effect of the hot air flow.

[0055] Figure 10 is a schematic structural diagram of the dynamic weighing machine A104 according to an embodiment of the present invention, as Figure 10As shown, the dynamic weighing machine A104 includes a mounting plate A104-1, a fixing plate A104-2, at least two drive shafts A104-3, a conveyor belt A104-4, a weighing sensor A104-5, a multi-axis synchronous motor A104-6, and a slider A104-7. At least two notches A104-1a are formed on the mounting plate A104-1. At least two chutes A104-2a are formed on the fixing plate A104-2 in the vertical direction. The drive shaft A104-3 has a first end A104-3a and a second end A104-3b, and the drive shaft A104-3 is rotatably mounted in the notch A104-1a of the mounting plate A104-1. The conveyor belt A104-4 is sleeved and mounted outside the drive shaft A104-3 and the mounting plate A104-1 and is driven by the drive shaft A104-3 to convey traditional Chinese medicinal materials. The weighing sensor A104-5 has a sensing surface A104-5a. The weighing sensor A104-5 is fixedly mounted on the fixing plate A104-2 and is located below the mounting plate A104-1. The sensing surface A104-5a of the weighing sensor A104-5 contacts the lower surface of the mounting plate A104-1. The multi-axis synchronous motor A104-6 is arranged at the first end A104-3a of the drive shaft A104-3 to drive the drive shaft A104-3 to operate. The slider A104-7 is fixedly connected to the second end A104-3b of the drive shaft A104-3 and is slidably mounted in the chute A104-2a. When the traditional Chinese medicinal materials enter the dynamic weighing machine A104, the traditional Chinese medicinal materials are located above the conveyor belt A104-4. The conveyor belt A104-4 conveys the traditional Chinese medicinal materials above it, so that the traditional Chinese medicinal materials are conveyed out of the conveyor belt A104-4 and enter the lower chain conveyor belt A102. It should be noted that the conveying speed of the conveyor belt A104-4, the conveying speed of the traditional Chinese medicinal materials entering the conveyor belt A104-4, and the conveying speed of the chain conveyor belt A102 are kept consistent. Therefore, the total amount of traditional Chinese medicinal materials on the conveyor belt A104-4 will form a dynamic balance under the continuous input and output of the traditional Chinese medicinal materials. At the same time, the traditional Chinese medicinal materials on the conveyor belt A104-4 will exert a gravitational force on the conveyor belt A104-4 and the mounting plate A104-1 on which the conveyor belt A104-4 is installed. The weighing sensor A104-5 measures this gravity through the sensing surface A104-5a in contact with the lower surface of the mounting plate A104-1. In addition, the dynamic weighing machine according to the embodiment of the present invention is not limited to this, but can include any dynamic weighing machine having a dynamic weighing function therein.

[0056] Figure 11 FIG. is a schematic structural diagram of a conductive traditional Chinese medicinal material dryer according to an embodiment of the present invention, as Figure 11As shown, this embodiment further includes at least one feeding conveyor belt A5, and the feeding conveyor belt A5 is used to convey Chinese medicinal materials into the drying chamber A101 at the uppermost end inside the drying box A1; among them, the feeding conveyor belt A5 includes at least one material leveling device A501 and a second driving motor A502: the material leveling device A501 is arranged on the feeding conveyor belt A5 to evenly convey Chinese medicinal materials; the second driving motor A502 is arranged on the feeding conveyor belt A5 to drive the feeding conveyor belt A5 to operate.

[0057] Figure 12 is a flowchart of a drying method according to an embodiment of the present invention, as Figure 12 shown, the drying method specifically includes the following steps:

[0058] S1. Feeding:

[0059] Convey the Chinese medicinal materials to be dried through the feeding conveyor belt A5, and among them, the material leveling device A501 on the feeding conveyor belt A5 is used to evenly distribute the conveyed Chinese medicinal materials;

[0060] S2. Drying:

[0061] S2-1:

[0062] The Chinese medicinal materials conveyed through the feeding conveyor belt A5 are first conveyed to the drying chamber A101 at the uppermost end inside the drying box A1;

[0063] When the Chinese medicinal materials fall from the feeding conveyor belt A5 into the drying chamber A101, they first fall onto the dynamic weighing machine A104 located below the material passing opening A106, and the dynamic weighing machine A104 then conveys the Chinese medicinal materials to the lower chain conveyor belt A102 through the conveyor belt A104-4;

[0064] When the total amount of Chinese medicinal materials on the dynamic weighing machine A104 maintains a dynamic balance, the controller A4 records the weight of the Chinese medicinal materials sensed by the weighing sensor A104-5 as the first weight of the Chinese medicinal materials, and calculates and records the moisture content based on the recorded first weight of the Chinese medicinal materials and the target weight of the Chinese medicinal materials after drying;

[0065] The Chinese medicinal materials are conveyed inside the drying chamber A101 through the chain conveyor belt A102 and dried through the hot air conduction therein;

[0066] The Chinese medicinal materials are conveyed by the chain conveyor belt A102 from the material passing opening A106 on its lower second side to the lower drying chamber A101;

[0067] S2-2:

[0068] The Chinese medicinal materials conveyed from the upper drying chamber A101 first fall onto the dynamic weighing machine A104 located below the feeding port A106. Then, the dynamic weighing machine A104 conveys the Chinese medicinal materials to the lower chain conveyor belt A102 through the conveyor belt A104-5.

[0069] When the total amount of Chinese medicinal materials on the dynamic weighing machine A104 maintains dynamic balance, the controller A4 records the weight two of the Chinese medicinal materials sensed by the weighing sensor A104-5. Based on the recorded weight two of the Chinese medicinal materials and weight one of the Chinese medicinal materials, the moisture content two is calculated and recorded. At the same time, the drying speed one is calculated and recorded.

[0070] Based on the weight two of the Chinese medicinal materials, the drying speed one, and the target weight of the Chinese medicinal materials, it is determined whether it is necessary to change the hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt A102.

[0071] When the controller A4 calculates and determines that the target weight of the Chinese medicinal materials cannot be achieved until the end under the current hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt A102, the controller A4 controls the fan assembly A2 and the heat exchanger A3 to increase the hot air flow rate and hot air temperature to raise the drying temperature, and controls the chain conveyor belt A102 to reduce the conveying speed to increase the drying time.

[0072] When the controller A4 calculates and determines that the Chinese medicinal materials will be over-dried until the end under the current hot air temperature, hot air flow rate, and the conveying speed of the chain conveyor belt, the controller A4 controls the fan assembly A2 and the heat exchanger A3 to reduce the hot air flow rate and hot air temperature to lower the drying temperature, and controls the chain conveyor belt A102 to increase the conveying speed to reduce the drying time.

[0073] The Chinese medicinal materials are conveyed inside the drying chamber A101 through the chain conveyor belt A102, and the controller A4 controls and adjusts the hot air conduction for drying.

[0074] The Chinese medicinal materials are conveyed by the chain conveyor belt A102 from the feeding port A106 below its second side to the lower drying chamber A101.

[0075] S2-3: Repeatedly adjust the drying conditions and perform drying according to the number of drying chambers A101.

[0076] S3. Discharging:

[0077] The Chinese medicinal materials dried in the lowermost drying chamber A101 are output by the chain conveyor belt A102 from the feeding port A106 below its second side.

[0078] In this article, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A conductive traditional Chinese medicine dryer, comprising a drying box body, a fan assembly, a heat exchanger and a controller, characterized in that At least two drying chambers are distributed vertically inside the drying box body, and the drying chambers include: A chain conveyor belt, having a first side and a second side, and conveying along the direction from the first side to the second side, wherein the first side and the second side of the chain conveyor belts inside adjacent drying chambers are inverted in sequence; A plurality of non-equal-diameter gears, having a first half and a second half, are arranged on the chain conveyor belt to drive its operation, wherein the tooth heights of the first half and the second half are different to realize the up-and-down shaking of the chain conveyor belt during operation; A dynamic weighing machine is arranged above the first side of the chain conveyor belt to perform equal-volume weighing on the incoming Chinese medicinal materials.

2. The conductive Chinese medicinal material dryer according to claim 1, wherein, The chain conveyor belt includes: A plurality of transmission shafts are arranged on the non-equal-diameter gears; A plurality of transmission chains are respectively connected to the transmission shafts and the non-equal-diameter gears; A first driving motor drives the transmission chain to drive the transmission shaft and the non-equal-diameter gear to rotate.

3. A conductive Chinese herbal medicine dryer according to claim 1, characterized in that, Ventilation mesh holes are opened on at least two opposite chamber walls inside the drying chamber, and the ventilation mesh holes are respectively opened at the upper and lower parts of the opposite chamber walls.

4. A conductive Chinese herbal medicine dryer according to claim 1, wherein, Feeding openings are opened above the first side and below the second side of the chain conveyor belt inside the drying chamber.

5. A conductive Chinese herbal medicine dryer according to claim 3, characterized in that The drying box body further includes: At least two air inlet chambers and an air exhaust chamber, and the air inlet chamber and the air exhaust chamber are respectively communicated with the drying chamber through the ventilation mesh holes, wherein hot air flow enters the drying chamber through the air inlet chamber and is discharged through the air exhaust chamber to realize hot air drying; The air exhaust chambers are communicated with each other.

6. The conductive Chinese herbal medicine dryer according to claim 5, characterized in that, An air inlet is opened on one side of the air inlet chamber, wherein the fan assembly, the heat exchanger and the air inlet are connected through pipelines to introduce the hot air flow into the air inlet, and an air outlet is arranged on the side of the air exhaust chamber away from the air inlet. A plurality of arc-shaped air guide plates are installed inside the air inlet chamber and the air exhaust chamber to guide the hot air flow.

7. The conduction type Chinese medicinal material dryer according to claim 1, wherein, The dynamic weighing machine includes: A mounting plate is provided with at least two notches; A fixing plate is provided with at least two sliding grooves along the vertical direction; At least two driving shafts, having a first end and a second end, are rotatably installed in the notches of the mounting plate; A conveyor belt is sleeved and installed outside the driving shaft and the mounting plate and is driven by the driving shaft to operate for conveying Chinese medicinal materials; A weighing sensor, having a sensing surface, is fixedly installed on the fixing plate and is located below the mounting plate, and its sensing surface is in contact with the lower surface of the mounting plate.

8. A conductive Chinese herbal medicine dryer according to claim 7, characterized in that, The dynamic weighing machine further includes: A multi-axis synchronous motor is arranged at the first end of the driving shaft to drive its operation; A slider is fixedly connected to the second end of the driving shaft and is slidably installed in the sliding groove.

9. The conductive Chinese herbal medicine dryer according to claim 1, characterized in that, It further includes: At least one feeding conveyor belt to convey Chinese medicinal materials into the drying chamber inside the drying box body; The feeding conveyor belt includes: At least one material leveling device is arranged on the feeding conveyor belt to evenly convey Chinese medicinal materials; A second driving motor is arranged on the feeding conveyor belt to drive its operation.

10. A drying method, which uses a conduction-type Chinese medicinal material dryer described in any one of claims 1 to 9 above, specifically includes the following steps: S1. Feeding: The Chinese medicinal materials to be dried are conveyed by a feeding conveyor belt, where The Chinese medicinal materials conveyed are evenly distributed by the material leveling device on the feeding conveyor belt; S2. Drying: S2-1. Pre-drying: The Chinese medicinal materials conveyed by the feeding conveyor belt are first conveyed to the drying chamber at the uppermost end inside the drying box body; When the Chinese medicinal materials fall from the feeding conveyor belt into the drying chamber, they first fall onto the dynamic weighing machine located below the material passing opening, and the dynamic weighing machine then conveys the Chinese medicinal materials to the chain conveyor net belt below through the conveyor belt; When the total amount of Chinese medicinal materials on the dynamic weighing machine maintains dynamic balance, the controller records the weight of the Chinese medicinal materials sensed by the weighing sensor as Weight One of Chinese Medicinal Materials, calculates and records the moisture content One based on the recorded Weight One of Chinese Medicinal Materials and the target weight of the Chinese medicinal materials after drying; The Chinese medicinal materials are conveyed inside the drying chamber by the chain conveyor net belt and dried through the hot air conduction therein; The Chinese medicinal materials are conveyed by the chain conveyor net belt from the material passing opening below its second side to the drying chamber below; S2-2. Adjusting Drying: The Chinese medicinal materials conveyed from the upper drying chamber first fall onto the dynamic weighing machine located below the material passing opening, and the dynamic weighing machine then conveys the Chinese medicinal materials to the chain conveyor net belt below through the conveyor belt; When the total amount of Chinese medicinal materials on the dynamic weighing machine maintains dynamic balance, the controller records the weight of the Chinese medicinal materials sensed by the weighing sensor as Weight Two of Chinese Medicinal Materials, calculates and records the moisture content Two based on the recorded Weight Two of Chinese Medicinal Materials and Weight One of Chinese Medicinal Materials, and simultaneously calculates and records the drying speed One; Judge whether it is necessary to change the hot air temperature, hot air flow rate and the conveying speed of the chain conveyor net belt according to Weight Two of Chinese Medicinal Materials, drying speed One and the target weight of the Chinese medicinal materials; When the controller calculates and judges that the target weight of the Chinese medicinal materials cannot be achieved until the end under the current hot air temperature, hot air flow rate and the conveying speed of the chain conveyor net belt, the controller increases the hot air temperature and hot air flow rate to increase the drying temperature, and reduces the conveying speed of the chain conveyor net belt to increase the drying time; When the controller calculates and judges that it will be over-dried until the end under the current hot air temperature, hot air flow rate and the conveying speed of the chain conveyor net belt, the controller reduces the hot air temperature and hot air flow rate to reduce the drying temperature, and increases the conveying speed of the chain conveyor net belt to reduce the drying time; The Chinese medicinal materials are conveyed inside the drying chamber by the chain conveyor net belt and dried by controlling and adjusting the hot air conduction through the controller; The Chinese medicinal materials are conveyed by the chain conveyor net belt from the material passing opening below its second side to the drying chamber below; Repeatedly adjust the drying conditions and perform drying according to the number of drying chambers; S3. Discharging: The Chinese medicinal materials dried in the lowermost drying chamber are output from the material passing opening below the second side of the chain conveyor net belt.

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