Illicium verum microwave vacuum drying device

Abstract

The utility model discloses an illicium verum microwave vacuum drying device, which belongs to the technical field of drying equipment, solves the technical problem of uneven heating of the existing microwave vacuum drying machine, and comprises a box body, a microwave generator and a vacuum generator are arranged in the box body, and a vertically arranged rotary disc is arranged on the inner wall of the rear side of the box body. A rotary shaft is arranged in the middle of the rotary disc, penetrates through the rear side wall of the box body and is connected with a driving motor, a sealing ring is arranged between the rotary shaft and the rear side wall of the box body, a plurality of hanging rods which transversely extend and are uniformly arranged around the rotary shaft are arranged on the outer edge of the rotary disc, a rotary sleeve which is rotationally connected is arranged at one end of each hanging rod, and a hook is arranged at the bottom of each rotary sleeve; the microwave generator is located on the top wall of the box body and located over the highest loading disc of the rotary disc. The microwave generator is positioned right above the rotary disc, and the rotary disc continuously rotates during microwave heating, so that the star anise in each loading disc can be uniformly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, and more specifically, to a microwave vacuum drying device for star anise. Background Art

[0002] Star anise is the fruit of the star anise tree. Its scientific name is Illicium verum. It is purple-brown in color, octagonal, and star-shaped. It has a sweet taste and a strong aromatic smell. The aroma comes from the volatile anise aldehyde. The fruit and seeds of star anise can be used as seasonings and medicines. They can also be used as raw materials for perfumes, toothpastes, soaps, cosmetics, etc. in industry. Star anise fruits still have moisture after harvesting, and are prone to deterioration, mold, and rot. They must be processed in time. Star anise is generally dried by killing green (boiling), direct drying (drying in the sun), and film covering drying. It is impossible to process star anise in large quantities in a short time. If star anise cannot be dried in time, it will deteriorate and rot. If it is not dried completely, it will easily become moldy and worm-eaten during storage, causing quality decline and affecting industrial development.

[0003] Among many drying technologies, hot air drying is widely used because of its simple equipment structure and low cost. The hot air heating tube is mainly composed of resistance wire, metal tube and heat sink. During use, the heating tube will disperse heat layer by layer, the heating tube itself has a lot of losses, the utilization rate is low, and the heating tube is easy to damage. When the hot air is dried to the critical saturation, after the diffusion rate of the internal liquid water is less than the evaporation rate of the material surface, dry spots will form on the surface of the material, the water loss process becomes slow, resulting in prolonged drying time, and the main active ingredients of star anise (volatile oil, anisaldehyde) are seriously lost.

[0004] Patent CN207422781U discloses a microwave vacuum dryer, including a door cover, a storage plate, a box body and a shell, wherein a door cover is hinged on one side of the box body, and a control panel is installed on the door cover, a motor is installed at the bottom end of the box body, and a rotating shaft is installed at the output end of the motor, storage plates are evenly arranged on the rotating shaft, and hooks are arranged at the bottom ends of the storage plates, microwave generators are installed at both ends of the box body, and an infrared temperature sensor is installed at the top of the box body, the output end of the infrared temperature sensor is electrically connected to the input end of the control panel, and the output end of the control panel is electrically connected to the input end of the microwave generator.

[0005] However, the microwave generator of the microwave vacuum dryer is installed on the side wall. Due to the multi-layer storage plates, the objects to be dried on the high and low storage plates are easily blocked in actual operation, resulting in uneven heating and drying. Utility Model Content

[0006] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art, and the purpose of the utility model is to provide a microwave vacuum drying device for star anise.

[0007] The technical solution of the utility model is: a star anise microwave vacuum drying device, comprising a box body, the box body is provided with a microwave generator and a vacuum generator, the rear inner wall of the box body is provided with a vertically arranged turntable, the middle part of the turntable is provided with a turntable shaft rotatably connected to the rear wall of the box body, one end of the turntable passes through the rear wall of the box body and is connected to a driving motor, a sealing ring is provided between the turntable and the rear wall of the box body, the outer edge of the turntable is provided with a plurality of hanging rods extending laterally and evenly arranged around the turntable, one end of the hanging rod is provided with a rotatably connected rotating sleeve, the bottom of the rotating sleeve is provided with a hook, the hook is hung with a loading tray, the microwave generator is located on the top wall of the box body and directly above the loading tray at the highest point of the turntable.

[0008] As a further improvement, the loading tray includes a loading plate, a hanging ring is provided directly above the loading plate, and the four corners of the loading plate are connected to the hanging ring through connecting rods.

[0009] Furthermore, the carrier plate is covered with air holes.

[0010] Furthermore, the number of the hanging rods is 4.

[0011] Furthermore, the other end of the hanging rod is provided with a hexagonal head, the hexagonal head is provided with a screw rod, and the rotating disk is provided with a threaded hole corresponding to the screw rod.

[0012] Furthermore, exhaust hoods are respectively provided on both sides of the inner wall of the top of the box body, and the exhaust hoods are connected to the vacuum generator through an exhaust pipe.

[0013] Furthermore, a water tank is arranged around the inner wall of the bottom of the box body, and a drain valve connected to the water tank is arranged at the bottom of the box body.

[0014] Furthermore, a box door and a mounting plate are respectively provided on the front side of the box; the box door is rotatably connected to one side wall of the box, the mounting plate is fixedly connected to the other side wall of the box, a door lock is provided between the box door and the mounting plate, and sealing strips are provided between the box door and the box and the mounting plate.

[0015] Furthermore, the mounting plate is provided with a control panel, and the control panel is electrically connected to the microwave generator, the vacuum generator, and the driving motor.

[0016] Furthermore, a temperature sensor and a pressure sensor are respectively provided on the top of the box, and the control panel is electrically connected to the temperature sensor and the pressure sensor.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The microwave generator of the utility model is located right above the rotary disk. The rotary disk rotates continuously during microwave heating, so that the star anise in each loading disk can be heated evenly, thereby ensuring the uniform drying of the star anise as a whole and ensuring the drying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal main structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal left-side structure of the utility model;

[0023] Figure 4 It is a three-dimensional perspective view of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the material loading tray in the utility model.

[0025] Wherein: 1-box, 2-microwave generator, 3-vacuum generator, 4-turntable, 5-rotating shaft, 6-driving motor, 7-hanging rod, 8-rotating sleeve, 9-hook, 10-loading tray, 11-loading plate, 12-hanging ring, 13-connecting rod, 14-air hole, 15-hexagonal head, 16-exhaust hood, 17-exhaust pipe, 18-water tank, 19-drain valve, 20-box door, 21-mounting plate, 22-door lock, 23-control panel, 24-temperature sensor, 25-pressure sensor, 26-placement slot. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0027] See also Figure 1 to Figure 5A microwave vacuum drying device for star anise comprises a box 1, which is provided with a microwave generator 2 and a vacuum generator 3. A vertically arranged rotating disk 4 is provided on the inner wall of the rear side of the box 1, a rotating shaft 5 rotatably connected to the rear side wall of the box 1 is provided in the middle of the rotating disk 4, one end of the rotating shaft 5 passes through the rear side wall of the box 1 and is connected to a driving motor 6, a sealing ring is provided between the rotating shaft 5 and the rear side wall of the box 1, a plurality of hanging rods 7 extending laterally and evenly arranged around the rotating shaft 5 are provided on the outer edge of the rotating disk 4, a rotating sleeve 8 rotatably connected is provided at one end of the hanging rod 7, the rotating sleeve 8 is connected to the hanging rod 7 through a bearing, a hook 9 is provided at the bottom of the rotating sleeve 8, a loading tray 10 is hung on the hook 9, and the microwave generator 2 is located on the top wall of the box 1 and directly above the loading tray 10 at the highest point of the rotating disk 4.

[0028] Since the microwave generator is located directly above the turntable, the turntable continues to rotate while the microwave is heating, so that the star anise in each loading tray can be heated evenly, thereby ensuring the uniformity of the overall drying of the star anise and ensuring the drying quality.

[0029] In this embodiment, the loading tray 10 includes a loading plate 11, a hanging ring 12 is provided directly above the loading plate 11, the four corners of the loading plate 11 are connected to the hanging ring 12 through connecting rods 13, and a placement groove 26 for placing star anise is provided on the top of the loading plate 11.

[0030] Furthermore, the carrier plate 11 is covered with air holes 14, which can increase the gas flow rate at the bottom of the star anise, thereby improving the drying effect of the bottom of the star anise.

[0031] Preferably, the number of the hanging rods 7 is 4. The other end of the hanging rod 7 is provided with a hexagonal head 15, the hexagonal head 15 is provided with a screw, the rotary disk 4 is provided with a threaded hole corresponding to the screw, and the hanging rod 7 is installed in the threaded hole through the screw for easy disassembly and assembly.

[0032] Suction hoods 16 are provided on both sides of the inner wall at the top of the box body 1 , so that the gas in the box body 1 is evenly extracted from both sides. The suction hood 16 is connected to the vacuum generator 3 through a suction pipe 17 .

[0033] A water tank 18 is provided around the inner wall of the bottom of the box body 1 , and a drain valve 19 connected to the water tank 18 is provided at the bottom of the box body 1 for draining the accumulated water in the box body 1 .

[0034] A box door 20 and a mounting plate 21 are respectively provided on the front side of the box body 1. The box door 20 is rotatably connected to one side wall of the box body 1, and the mounting plate 21 is fixedly connected to the other side wall of the box body 1. A door lock 22 is provided between the box door 20 and the mounting plate 21, and sealing strips are provided between the box door 20 and the box body 1 and the mounting plate 21.

[0035] The mounting plate 21 is provided with a control panel 23, and the control panel 23 is electrically connected to the microwave generator 2, the vacuum generator 3, and the driving motor 6. A temperature sensor 24 and a pressure sensor 25 are respectively provided on the top of the box body 1, and the control panel 23 is electrically connected to the temperature sensor 24 and the pressure sensor 25 for real-time detection of the temperature and pressure in the box body 1.

[0036] Working principle:

[0037] First, open the cabinet door 20, evenly place the star anise to be dried on the loading tray 10, with a thickness of 1 to 3 cm, and the star anise loading amount of each loading tray should be consistent, then close and lock the cabinet door 20, set the temperature, air pressure, and time on the control panel 23, click the start button, and the control panel 23 starts the microwave generator 2, the vacuum generator 3, and the drive motor 6 to work until the drying time arrives and the drying is completed. The utility model utilizes the field energy of the microwave field to convert into heat energy in the medium, so that the temperature of the star anise is increased, and a series of physical and chemical processes such as heating and puffing are generated to achieve the purpose of microwave heating and drying. Compared with the characteristics of long time and high energy consumption of traditional sun drying and hot air drying, microwave vacuum rapid drying combines the instantaneous nature of microwave heating with the low temperature characteristics of significantly reducing the boiling point temperature of water under a vacuum environment, and has the characteristics of fast, low temperature, and high efficiency. The drying temperature is within the range of 25°C to 45°C, which can greatly reduce the loss of nutrients and biologically active functional components of heat-sensitive materials, and star anise can maintain better product quality.

[0038] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A star anise microwave vacuum drying device, comprising a housing (1), wherein the housing (1) is provided with a microwave generator (2) and a vacuum generator (3), characterized in that: A vertically arranged turntable (4) is provided on the inner wall of the rear side of the box body (1); a turntable (4) is provided in the middle of the turntable (4) with a turntable shaft (5) rotatably connected to the rear side wall of the box body (1); one end of the turntable shaft (5) passes through the rear side wall of the box body (1) and is connected to a drive motor (6); a sealing ring is provided between the turntable shaft (5) and the rear side wall of the box body (1); a plurality of hanging rods (7) extending laterally and evenly arranged around the turntable shaft (5) are provided on the outer edge of the turntable (4); one end of the hanging rod (7) is provided with a rotatably connected rotating sleeve (8); a hook (9) is provided at the bottom of the rotating sleeve (8); a loading tray (10) is hung on the hook (9); the microwave generator (2) is located on the top wall of the box body (1) and directly above the loading tray (10) at the highest point of the turntable (4).

2. The star anise microwave vacuum drying device according to claim 1, characterized in that: The material loading tray (10) comprises a material loading plate (11), a hanging ring (12) is provided directly above the material loading plate (11), and the four corners of the material loading plate (11) are connected to the hanging ring (12) via connecting rods (13).

3. A star anise microwave vacuum drying device according to claim 2, characterized in that: The material carrying plate (11) is covered with air holes (14).

4. The star anise microwave vacuum drying device according to claim 1, characterized in that: The number of the hanging rods (7) is 4.

5. The star anise microwave vacuum drying device according to claim 1, characterized in that: The other end of the hanging rod (7) is provided with a hexagonal head (15), the hexagonal head (15) is provided with a screw rod, and the rotating disk (4) is provided with a threaded hole corresponding to the screw rod.

6. The star anise microwave vacuum drying device according to claim 1, characterized in that: Suction hoods (16) are respectively provided on both sides of the inner wall at the top of the box body (1), and the suction hoods (16) are connected to the vacuum generator (3) via a suction pipe (17).

7. The star anise microwave vacuum drying device according to claim 1, characterized in that: A water tank (18) is arranged around the inner wall of the bottom of the box body (1), and a drain valve (19) connected to the water tank (18) is arranged at the bottom of the box body (1).

8. A star anise microwave vacuum drying device according to any one of claims 1 to 7, characterized in that: The front side of the box body (1) is respectively provided with a box body door (20) and a mounting plate (21); the box body door (20) is rotatably connected to one side wall of the box body (1); the mounting plate (21) is fixedly connected to the other side wall of the box body (1); a door lock (22) is provided between the box body door (20) and the mounting plate (21); and sealing strips are provided between the box body door (20) and the box body (1) and the mounting plate (21).

9. The star anise microwave vacuum drying device according to claim 8, characterized in that: The mounting plate (21) is provided with a control panel (23), and the control panel (23) is electrically connected to the microwave generator (2), the vacuum generator (3), and the drive motor (6).

10. The star anise microwave vacuum drying device according to claim 9, characterized in that: A temperature sensor (24) and a pressure sensor (25) are respectively provided on the top of the box body (1), and the control panel (23) is electrically connected to the temperature sensor (24) and the pressure sensor (25).

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