Rotary type freezing and microwave vacuum alternating traditional Chinese medicinal material drying equipment

Abstract

The invention discloses rotary type freezing and microwave vacuum alternating traditional Chinese medicinal material drying equipment. A drying chamber, a driving motor and a control system are all fixed on a base; a traditional Chinese medicinal material rotary placing device, a microwave generator and an evaporator are arranged in the drying chamber, the traditional Chinese medicinal material rotary placing device is mounted in the drying chamber through a driving wheel and three driven wheels, a hanging scaffold is connected with a connecting column through a hanging scaffold arm, and a driving motor drives the driving wheel to rotate through chain wheel transmission; the microwave generator is fixed at the top of the drying chamber; the evaporator is fixed on the inner wall of the drying chamber; the rear end of the drying chamber is connected with a vacuum pipeline which is provided with a vacuum valve; the bottom of the drying chamber is connected with a drainage pipeline which is provided with a drainage valve; the temperature sensor, the humidity sensor and the vacuum pressure sensor are fixed at the top of the drying chamber; the microwave generator, the driving motor, the vacuum valve, the drainage valve, the temperature sensor, the humidity sensor, the vacuum pressure sensor and the refrigerating device are all connected with a control system circuit.

Description

Technical Field

[0001] The invention relates to rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment, belonging to the field of drying equipment. Background Art

[0002] At present, although the product indicators and ingredient content of many processed Chinese medicinal materials are significantly higher than those of traditional processing methods, their external size, color, texture, wrinkles, etc. are significantly different from traditional processing, which affects market recognition. The root cause is the lack of key technology research and development and supporting equipment development in all aspects of processing. Following the characteristics of Chinese medicinal materials, the development of new technologies and equipment for efficient, quality-preserving and energy-saving drying can effectively support the high-quality development of the Chinese medicine industry, especially providing more standardized and normalized technical support for fresh cutting and processing. Summary of the invention

[0003] The present invention provides a rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment to solve the problems existing in the above-mentioned prior art. Compared with the traditional vacuum drying and normal pressure drying technology, vacuum alternating drying is a drying technology that can make the pressure in the drying chamber change regularly between vacuum and normal pressure states, and can continuously break the equilibrium state of water evaporation, improve drying efficiency, and reduce drying energy consumption. The present invention can make Chinese medicinal materials in a state of motion during the drying process, and be evenly cooled and heated, while reducing energy consumption, improving drying quality, and retaining the effective ingredients of medicinal materials to the maximum extent.

[0004] The technical solution of the present invention is: a rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment, comprising a base, a drying chamber, a Chinese medicinal material rotating placement device, a microwave generator, an evaporator, a driving motor, a control system and a refrigeration device, wherein the drying chamber, the driving motor and the control system are all fixed on the base; the Chinese medicinal material rotating placement device, the microwave generator and the evaporator are arranged in the drying chamber, the Chinese medicinal material rotating placement device is installed in the drying chamber through a driving wheel and three driven wheels, the hanging plate is connected to the connecting column through a hanging plate arm, the driving motor drives the driving wheel to rotate through a sprocket transmission, and then drives the Chinese medicinal material rotating placement device to rotate ; The microwave generator is fixed on the top of the drying chamber, and the evaporator is fixed on the inner wall of the drying chamber; the drying chamber and the drying chamber door are both provided with observation windows for convenient observation of the drying state of Chinese medicinal materials; the rear end of the drying chamber is connected to a vacuum pipe, and a vacuum valve is installed on the vacuum pipe; the bottom of the drying chamber is connected to a drainage pipe, and a drainage valve is installed on the drainage pipe; the temperature sensor, humidity sensor and vacuum pressure sensor are fixed on the top of the drying chamber; the microwave generator, drive motor, vacuum valve, drainage valve, temperature sensor, humidity sensor, vacuum pressure sensor and refrigeration device are all connected to the control system circuit.

[0005] The beneficial effects of the present invention are: ①The drying chamber and the drying chamber door are both cylindrical structures with smooth inner walls. The cylindrical structure can withstand greater pressure during the vacuum alternating drying stage. At the same time, the smooth inner wall is conducive to reflecting microwaves and improving energy utilization efficiency; ②Circular observation windows are set on the side walls of the drying room and in the center of the drying room door to facilitate observation of the drying status of Chinese medicinal materials; ③The hanging tray can be quickly attached and disassembled, and the surface of the Chinese medicinal materials is always kept facing the microwave generator and evaporator, which improves the cooling and heating efficiency of the Chinese medicinal materials and ensures high consistency in the drying process; ④ The control system can display the environmental status of the drying room in real time, set different drying process parameters, and accurately control the temperature, humidity, vacuum pressure and speed of the Chinese medicinal material rotating placement device in the drying room, so as to improve the drying quality and retain the effective ingredients of the medicinal materials to the maximum extent; ⑤Compared with vacuum drying and normal pressure drying, the vacuum alternating drying method can continuously break the equilibrium state of water evaporation, improve drying efficiency and reduce drying energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a front view of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the present invention; Figure 3 is a right side sectional view of the present invention; Figure 4 It is a three-dimensional schematic diagram of the Chinese medicinal material rotating placement device of the present invention; In the figure: 1-temperature sensor, 2-microwave generator, 3-evaporator, 4-drying chamber, 5-hanging plate arm, 6-hanging plate, 7-vacuum channel, 8-rim, 9-driven wheel, 10-driven wheel base, 11-driving motor, 12-base, 13-observation window, 14-drying chamber door, 15-control button, 16-touch screen, 17-humidity sensor, 18-vacuum pressure sensor, 19-vacuum valve, 20-vacuum pipe, 21-drainage channel, 22-drainage valve, 23-drainage pipe, 24-connecting column, 25-driving wheel, 26-driving wheel base. DETAILED DESCRIPTION

[0007] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0008] like Figure 1-4As shown, a rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment comprises a base 12, a drying chamber 4, a Chinese medicinal material rotating placement device, a microwave generator 2, an evaporator 3, a driving motor 11, a control system and a refrigeration device, wherein the drying chamber 4, the driving motor 11 and the control system are all fixed on the base 12; the Chinese medicinal material rotating placement device, the microwave generator 2 and the evaporator 3 are arranged in the drying chamber, the Chinese medicinal material rotating placement device is installed in the drying chamber through a driving wheel 25 and three driven wheels 9, the hanging plate 6 is connected to the connecting column 24 through the hanging plate arm 5, the driving motor 11 drives the driving wheel 25 to rotate through the sprocket transmission, and then drives the Chinese medicinal material rotating placement device to rotate; the microwave generator 2 is fixed on the drying chamber, and the driving motor 11 drives the driving wheel 25 to rotate through the sprocket transmission, thereby driving ... The top of the drying chamber 4, the evaporator 3 is fixed on the inner wall of the drying chamber 4; the drying chamber 4 and the drying chamber door 14 are both provided with an observation window 13, which is convenient for observing the drying state of the Chinese medicinal materials; the rear end of the drying chamber 4 is connected to a vacuum pipe 20, and a vacuum valve 19 is installed on the vacuum pipe 20; the bottom of the drying chamber 4 is connected to a drainage pipe 23, and a drainage valve 22 is installed on the drainage pipe 23; the temperature sensor 1, the humidity sensor 17 and the vacuum pressure sensor 18 are fixed on the top of the drying chamber 4; the microwave generator 2, the driving motor 11, the vacuum valve 19, the drainage valve 22, the temperature sensor 1, the humidity sensor 17, the vacuum pressure sensor 18 and the refrigeration device are all connected to the control system circuit.

[0009] Specifically, the drying chamber 4 and the drying chamber door 14 are both cylindrical structures with smooth inner walls. The cylindrical structure can withstand greater pressure during the vacuum alternating drying stage. At the same time, the smooth inner wall is conducive to reflecting microwaves and improving energy utilization efficiency. The drying chamber 4 and the drying chamber door 14 are connected by hinges, which can ensure the rapid opening and closing of the drying chamber door 14 and provide a closed environment for the drying chamber 4.

[0010] Specifically, the walls of the drying chamber 4 and the drying chamber door 14 are hollow structures, and the drying chamber 4 and the drying chamber door 14 include an inner wall, an outer wall and a thermal insulation material layer, and the thermal insulation material layer is filled between the inner wall and the outer wall to reduce the energy exchange between the drying chamber 4 and the environment; the side walls of the drying chamber 4 and the center of the drying chamber door 14 are provided with circular observation windows 13, and the circular observation windows 13 are made of glass.

[0011] Specifically, the Chinese medicinal materials rotating placement device is installed in the center of the drying chamber 4, and the Chinese medicinal materials rotating placement device is supported by a driving wheel 25 and three driven wheels 9. The Chinese medicinal materials rotating placement device realizes rotation through the contact between the wheel rim 8 and the driving wheel 25. The Chinese medicinal materials rotating placement device is always in motion in the drying chamber, which can improve the drying uniformity of the Chinese medicinal materials; the hanging plate arm 5 is connected to the connecting column 24 through a bearing, and the hanging plate arm 5 can rotate around the connecting column 24, and a U-shaped groove is provided at the lower end of the hanging plate arm 5; quick connectors are provided at both ends of the hanging plate 6, and the quick connectors can cooperate with the U-shaped groove to realize the rapid hanging and disassembly of the hanging plate 6. Due to the action of its own gravity, the hanging plate 6 always keeps the Chinese medicinal materials placement surface of the hanging plate 6 facing upward, that is, it always faces the microwave generator 2 and the evaporator 3, thereby improving the cooling and heating efficiency of the Chinese medicinal materials.

[0012] Specifically, the control system includes a touch screen 16, a control button 15, a temperature detection unit, a humidity detection unit, a vacuum pressure detection unit, a microwave emission control unit, a refrigeration device start and stop control unit, a vacuum valve opening and closing control unit, a drainage valve opening and closing control unit and a drive motor speed control unit; the detection unit and the control unit are both connected to the touch screen 16 circuit, and the touch screen 16 is used to display the environmental status of the drying room in real time, and set different drying process parameters to achieve precise control of the temperature, humidity, vacuum pressure and speed of the Chinese medicinal materials rotating placement device in the drying room.

[0013] Specifically, the detection range of the temperature sensor 1 is -80~250°C, the detection range of the humidity sensor 17 is 0~100%RH, the detection range of the vacuum pressure sensor 18 is 0~100kPa, the temperature control accuracy is ±2°C, and the control accuracy of the drive motor 11 is ±1r / min.

[0014] The working process of the present invention is: first, open the drying chamber door 14, remove the six hanging trays 6 from the hanging tray arms in turn, then evenly lay the Chinese medicinal materials to be dried on the hanging trays, then hang the six hanging trays 6 on the hanging tray arms in turn, and close the drying chamber door 14. Secondly, open the control system, control the rotation of the drive motor 11 and the refrigeration device to refrigerate, and complete the freeze-drying process of the Chinese medicinal materials. Then, intermittently open the refrigeration device and the microwave generator 2 alternately, so that the temperature of the drying chamber 4 remains unchanged within a certain period of time, and at the same time, intermittently open and close the vacuum valve 19, so that the pressure in the drying chamber changes regularly between normal pressure and vacuum state, and completes the vacuum alternating drying process of the Chinese medicinal materials. Finally, close all control units, open the drain valve 22 and the drying chamber door 14, take out the dried Chinese medicinal materials, and complete the rotary freezing and microwave vacuum alternating drying process of the Chinese medicinal materials.

[0015] The specific embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment, characterized in that: It comprises a base (12), a drying chamber (4), a Chinese medicinal material rotating placement device, a microwave generator (2), an evaporator (3), a drive motor (11), a control system and a refrigeration device; The drying chamber (4) is fixed on a base (12). The drying chamber (4) is a cylindrical structure. A Chinese medicinal material rotating placement device is arranged in the drying chamber (4). A microwave generator (2), a temperature sensor (1), a humidity sensor (17) and a vacuum pressure sensor (18) are fixed on the top of the drying chamber (4). An evaporator (3) is fixed on the inner wall of the drying chamber (4). An observation window (13) is arranged on the side wall of the drying chamber (4). A vacuum channel (7) is arranged at the rear end of the drying chamber (4). A drainage channel (21) is arranged at the bottom of the drying chamber (4). A driving wheel device and three driven wheel devices are welded to the lower part of the inner wall of the drying chamber (4). The drying chamber door (14) is connected to the drying chamber (4) via a hinge, the drying chamber door (14) is a cylindrical structure, and a circular observation window (13) is provided at the center of the drying chamber door (14) for convenient observation of the drying state of the Chinese medicinal materials; The Chinese medicinal material rotating placement device comprises a wheel rim (8), a connecting column (24), a hanging plate arm (5) and a hanging plate (6); the wheel rim (8) and the six connecting columns (24) are fixed by welding; two hanging plate arms (5) are installed on each of the connecting columns (24); and the hanging plate (6) is hung on the lower end of the hanging plate arm (5); The evaporator (3) is fixed to the inner wall of the drying chamber (4); the evaporator (3) is a hollow circular tube structure; the evaporator (3) is distributed in an arc shape; the input pipe and the output pipe of the evaporator (3) are connected to a refrigeration device, and conduction refrigeration is adopted to exchange heat through a refrigerant; The microwave generator (2) is fixed to the top of the drying chamber (4) and is used to provide microwaves for the drying chamber (4); The driving motor (11) is fixed to the base (12) by bolts, and the driving motor (11) drives the driving wheel (25) to rotate through a sprocket drive, and the driving wheel (25) contacts the wheel rim (8) of the Chinese medicinal material rotating placement device, thereby driving the Chinese medicinal material rotating placement device to rotate; The control system is mounted on a base (12), and comprises a touch screen (16) and a control button (15); the microwave generator (2), the drive motor (11), the vacuum valve (19), the drain valve (22), the temperature sensor (1), the humidity sensor (17), the vacuum pressure sensor (18), and the refrigeration device are all connected to the control system circuit.

2. The rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment according to claim 1 is characterized in that: The drying chamber (4) and the drying chamber door (14) are both cylindrical structures; the drying chamber (4) and the drying chamber door (14) are connected via a hinge.

3. The rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment according to claim 2 is characterized in that: The walls of the drying chamber (4) and the drying chamber door (14) are both hollow structures. The drying chamber (4) and the drying chamber door (14) comprise an inner wall, an outer wall and a heat-insulating material layer. The heat-insulating material layer is filled between the inner wall and the outer wall to reduce energy exchange between the drying chamber (4) and the environment. The side walls of the drying chamber (4) and the center of the drying chamber door (14) are both provided with circular observation windows (13), and the circular observation windows (13) are both made of glass.

4. The rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment according to claim 1, characterized in that: The Chinese medicinal material rotating placement device is installed at the center of the drying chamber (4). The Chinese medicinal material rotating placement device is supported by a driving wheel (25) and three driven wheels (9). The Chinese medicinal material rotating placement device is rotated by the contact between the wheel rim (8) and the driving wheel (25). The hanging tray arm (5) is connected to the connecting column (24) via a bearing. The hanging tray arm (5) can rotate around the connecting column (24). The lower end of the hanging tray arm (5) is provided with a U-shaped groove. Quick connectors are provided at both ends of the hanging tray (6). The quick connectors can cooperate with the U-shaped grooves to achieve quick hanging and removal of the hanging tray (6).

5. The rotary freezing and microwave vacuum alternating Chinese medicinal material drying equipment according to claim 1, characterized in that: The control system comprises a touch screen (16), a control button (15), a detection unit and a control unit, the detection unit comprising a temperature detection unit, a humidity detection unit and a vacuum pressure detection unit, the control unit comprising a microwave emission control unit, a refrigeration device start-stop control unit, a vacuum valve opening and closing control unit, a drainage valve opening and closing control unit and a drive motor speed control unit; the detection unit and the control unit are both connected to the touch screen (16) circuit.

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