Radio frequency hot air combined drying device

Abstract

The utility model relates to the technical field of drying equipment, in particular to a radio frequency and hot air combined drying device which comprises a drying box body, a radio frequency drying mechanism and a hot air drying mechanism, a weighing mechanism is arranged in the drying box body, and a mechanical arm is fixedly arranged on the inner side wall of the drying box body. The radio frequency drying mechanism comprises a radio frequency generator, an upper polar plate and a lower polar plate, the upper polar plate is arranged at the bottom of the top plate of the drying box body, and the lower polar plate is arranged on the weighing mechanism; the hot air drying mechanism comprises a fan, an air inlet pipeline, a hot air pipeline and an electric heating pipe, the air inlet end of the fan is communicated with the air inlet pipeline, the electric heating pipe is arranged in the air inlet pipeline, the air outlet end of the fan is communicated with the hot air pipeline, one end of the hot air pipeline is communicated with a hot air hose, and the other end of the hot air hose is communicated with a hot air pipe. And the other end of the hot air hose is connected with the tail end of the mechanical arm. According to the agricultural product drying device, the direction of hot air blown to agricultural products can be controlled, and the air volume and the air temperature needed in the agricultural product drying process can be conveniently controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, and particularly relates to a radio frequency and hot air combined drying device. Background Art

[0002] At present, hot air drying technology is commonly used to dry harvested agricultural products. However, the hot air drying technology has disadvantages such as long processing time, low drying uniformity, and difficulty in guaranteeing the quality of agricultural products. The radio frequency drying technology has the characteristics of energy saving and high efficiency, and large heating and drying rates, and has potential application prospects in the drying treatment of harvested agricultural products. However, when only using the radio frequency drying technology to dry agricultural products, phenomena such as uneven heating of agricultural products and heating out of control will occur. Therefore, the existing technology mostly uses radio frequency and hot air combined drying technology to dry agricultural products. However, the existing radio frequency and hot air combined drying equipment uses a parallel air inlet method to dry agricultural products, and the wind direction of the hot air blowing towards the agricultural products is single, resulting in uneven heating and drying of the agricultural products, and it is inconvenient to control the air volume and air temperature required during the drying process of the agricultural products. Summary of the Invention

[0003] In order to solve the problems that when the existing radio frequency and hot air combined drying equipment dries agricultural products, the hot air wind direction is single, and the hot air volume and air temperature are inconvenient to control, the utility model provides a radio frequency and hot air combined drying device, which can control the hot air wind direction blowing towards the agricultural products to make the heating and drying of the agricultural products uniform, and at the same time is also convenient to control the air volume and air temperature required during the drying process of the agricultural products, so as to accurately meet the requirements of the hot air volume, wind direction and air temperature required for the drying of agricultural products, and improve the quality of the drying of agricultural products.

[0004] In order to achieve the above purpose, the technical solution of the utility model is: a radio frequency and hot air combined drying device, including a drying box body, and further including a radio frequency drying mechanism and a hot air drying mechanism. A weighing mechanism is arranged inside the drying box body, and a robotic arm is fixedly arranged on the inner side wall of the drying box body. The radio frequency drying mechanism and the hot air drying mechanism are used to achieve the purpose of drying agricultural products, and the weighing mechanism plays a role in weighing the dried agricultural products, so as to timely adjust the electromagnetic wave frequency of the radio frequency drying mechanism and the air temperature and air volume of the hot air.

[0005] The radio frequency drying mechanism includes a radio frequency generator, an upper electrode plate and a lower electrode plate. The radio frequency generator is arranged on the top of the drying box body, the upper electrode plate is arranged at the bottom of the top plate of the drying box body, and the lower electrode plate is arranged on the weighing mechanism. The radio frequency generator, the upper electrode plate and the lower electrode plate are used to achieve the purpose of radio frequency drying of agricultural products.

[0006] The hot air drying mechanism includes a blower, an air inlet duct, a hot air duct, and an electric heating tube. The air inlet end of the blower is communicated with the air inlet duct, the electric heating tube is arranged inside the air inlet duct, the air outlet end of the blower is communicated with the hot air duct, one end of the hot air duct extends into the drying box body and is communicated with a hot air hose, and the other end of the hot air hose is connected to the end of the robotic arm. The electric heating tube is used to heat the air, the blower can deliver the heated air into the drying box body, and the robotic arm can change the direction of the hot air blowing on the agricultural products to make the heating and drying of the agricultural products uniform.

[0007] Further, the weighing mechanism includes a support frame, a support plate, and a weighing sensor. The support plate is located above the support frame, and the weighing sensor is arranged between the support frame and the support plate; the lower electrode plate is arranged on the top of the support plate. The weighing sensor is used to weigh the agricultural products located on the lower electrode plate.

[0008] Further, the end of the robotic arm is provided with an optical fiber temperature sensor and an optical fiber humidity sensor. The optical fiber temperature sensor can detect the temperature of the dried agricultural products, and the optical fiber humidity sensor can detect the humidity of the dried agricultural products.

[0009] Further, a right support is arranged on one side of the drying box body, and a display screen is arranged on the top of the right support; a blower support is arranged on the other side of the drying box body, a left support is arranged between the blower support and the drying box body, and the hot air duct is located on the top of the left support. The left support plays a role in supporting the hot air duct.

[0010] Further, the blower is arranged on the top of the blower support, and a temperature sensor is fixedly arranged on the inner side wall of the air inlet duct. The blower support plays a role in supporting the blower, and the temperature sensor can detect the temperature of the heated air.

[0011] Further, a numerical control system is also arranged on the top of the drying box body, and the numerical control system is connected to the display screen, the radio frequency generator, the robotic arm, the blower, and the electric heating tube through wires.

[0012] Further, a connecting rod is also arranged inside the drying box body, and both ends of the connecting rod are respectively connected to the drying box body and the hot air hose. The connecting rod is used to connect the hot air hose to prevent the hot air hose from sagging.

[0013] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] The structure of the utility model is reasonable and has good use effects. It can control the hot air direction blowing towards agricultural products, so as to make the heating and drying of agricultural products uniform. At the same time, it is also convenient to control the air volume and air temperature required during the drying process of agricultural products, thereby precisely meeting the requirements of hot air volume, direction and air temperature for the drying of agricultural products, realizing efficient, energy-saving and environmental-friendly drying of agricultural products, and improving the quality of agricultural product drying.

[0015] The utility model heats air through an electric heating tube. The fan transports the heated air to the inside of the drying box body through a hot air pipeline and a hot air hose, and makes the hot air blow towards the agricultural products to be dried through a robotic arm, achieving the effect of hot air drying of agricultural products; and the direction of the hot air blowing towards the agricultural products can be changed through the robotic arm. By using the multi-directional control of the robotic arm, the effect that the hot air angle changes according to the actual situation is realized, and the problem of single direction of the hot air blowing towards the agricultural products is solved.

[0016] The utility model respectively detects the temperature and humidity of the dried agricultural products through the fiber optic temperature sensor and the fiber optic humidity sensor at the end of the robotic arm, so as to adjust the hot air direction blowing towards the agricultural products through the robotic arm.

[0017] The utility model achieves the purpose of radio frequency drying of agricultural products through a radio frequency generator, an upper electrode plate and a lower electrode plate; and achieves the purpose of weighing the agricultural products located on the lower electrode plate through a weighing sensor, so as to timely adjust the electromagnetic wave frequency of the radio frequency drying mechanism and the air temperature and air volume of the hot air according to the weight of the agricultural products. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a radio frequency hot air combined drying device of the utility model;

[0019] Figure 2 is a schematic structural diagram of the robotic arm and the hot air hose of the utility model.

[0020] The reference numerals in the drawings are: 1 is the drying box body, 2 is the right support, 3 is the left support, 4 is the fan support, 5 is the numerical control system, 6 is the display screen, 7 is the radio frequency generator, 8 is the support frame, 9 is the support plate, 10 is the weighing sensor, 11 is the upper electrode plate, 12 is the lower electrode plate, 13 is the robotic arm, 14 is the fiber optic temperature sensor, 15 is the fan, 16 is the hot air pipeline, 17 is the hot air hose, 18 is the connecting rod, 19 is the air inlet pipeline, 20 is the electric heating tube, 21 is the temperature sensor. Detailed Embodiment

[0021] The following further describes the utility model in conjunction with the drawings and the detailed embodiment:

[0022] Such as Figures 1 to 2As shown in the figure, a radio frequency hot air combined drying device includes a drying box body 1, and also includes a radio frequency drying mechanism and a hot air drying mechanism. A weighing mechanism is arranged inside the drying box body 1, and a robotic arm 13 is fixedly arranged on the inner side wall of the drying box body 1. In this embodiment, the drying box body 1 has a structure with a hollow interior and an opening at the front. A curtain is installed at the opening of the drying box body 1. The radio frequency mechanism performs radio frequency drying on the agricultural products to be dried, and the hot air drying mechanism performs hot air drying on the agricultural products to be dried, so as to achieve the effect of drying the agricultural products. The weighing mechanism is used to detect the weight of the dried agricultural products, so as to timely adjust the electromagnetic wave frequency of the radio frequency drying mechanism and the air temperature and air volume of the hot air according to the weight of the agricultural products.

[0023] The radio frequency drying mechanism includes a radio frequency generator 7, an upper electrode plate 11 and a lower electrode plate 12. The radio frequency generator 7 is arranged on the top of the drying box body 1. The upper electrode plate 11 is arranged at the bottom of the top plate of the drying box body 1. The lower electrode plate 12 is arranged on the weighing mechanism. In this embodiment, the purpose of radio frequency drying of agricultural products is achieved through the radio frequency generator 7, the upper electrode plate 11 and the lower electrode plate 12. With the cooperation of the upper electrode plate 11 and the lower electrode plate 12, and under the action of the generated high-frequency electromagnetic waves, the agricultural products are rapidly heated, and the water molecules evaporate and separate from the agricultural products, achieving the effect of drying the agricultural products.

[0024] The hot air drying mechanism includes a fan 15, an air inlet pipe 19, a hot air pipe 16 and an electric heating tube 20. The air inlet end of the fan 15 is communicated with the air inlet pipe 19. The electric heating tube 20 is arranged inside the air inlet pipe 19. The air outlet end of the fan 15 is communicated with the hot air pipe 16. One end of the hot air pipe 16 extends into the drying box body 1 and is communicated with a hot air hose 17. The other end of the hot air hose 17 is connected to the end of the robotic arm 13. In this embodiment, the number of electric heating tubes 20 is two. When the fan 15 is started, the fan 15 sucks in air through the air inlet pipe 19, and the electric heating tube 20 heats the air. The heated air is conveyed into the drying box body 1 through the hot air pipe 16 and the hot air hose 17. The air outlet of the hot air hose 16 faces the direction of the lower electrode plate 12, and the robotic arm 13 can drive the hot air hose 17 to move, achieving the purpose of changing the hot air direction blowing towards the agricultural products.

[0025] The weighing mechanism includes a support frame 8, a support plate 9 and a weighing sensor 10. The support plate 9 is located above the support frame 8, and the weighing sensor 10 is arranged between the support frame 8 and the support plate 9; the lower electrode plate 12 is arranged on the top of the support plate 9. In this embodiment, when drying the agricultural products, the agricultural products are placed on the lower electrode plate 12, and the weighing sensor 10 continuously detects the weight of the agricultural products placed on the lower electrode plate 12, so as to timely adjust the electromagnetic wave frequency of the radio frequency drying mechanism and the air temperature and air volume of the hot air according to the weight of the agricultural products.

[0026] At the end of the robotic arm 13, an optical fiber temperature sensor 14 and an optical fiber humidity sensor are provided. In this embodiment, the optical fiber temperature sensor 14 and the optical fiber humidity sensor respectively detect the temperature and humidity of the dried agricultural products, so as to timely adjust the hot air direction blowing towards the agricultural products through the robotic arm 13; among them, the optical fiber temperature sensor 14 adopts the Yunpei Ke YP-RH-01 optical fiber sensor, and the optical fiber humidity sensor adopts the OSC4300 optical fiber temperature sensor of Beijing Tongwei Technology Co., Ltd.

[0027] On one side of the drying box body 1, a right bracket 2 is provided, and a display screen 6 is arranged on the top of the right bracket 2; on the other side of the drying box body 1, a fan bracket 4 is provided, and a left bracket 3 is arranged between the fan bracket 4 and the drying box body 1, and the hot air duct 16 is located on the top of the left bracket 3. In this embodiment, the right bracket 2 plays a role in supporting the display screen 6, and the hot air temperature, the temperature and humidity of the agricultural products, and the weight of the agricultural products can be displayed on the display screen 6, and the left bracket 3 plays a role in supporting the hot air duct 16.

[0028] The fan 15 is arranged on the top of the fan bracket 4, and a temperature sensor 21 is fixedly arranged on the inner side wall of the air inlet duct 19. In this embodiment, the fan bracket 4 plays a role in supporting the fan 15, and the temperature sensor 21 can detect the temperature of the heated air. The temperature sensor 21 adopts the Honeywell C7080A3100 air duct temperature sensor.

[0029] On the top of the drying box body 1, a numerical control system 5 is further provided, and the numerical control system 5 is connected to the display screen 6, the radio frequency generator 7, the robotic arm 13, the fan 15, and the electric heating tube 20 through wires. In this embodiment, the numerical control system 5 is also connected to the temperature sensor 21, the weighing sensor 10, the optical fiber temperature sensor 14, and the optical fiber humidity sensor through wires. The temperature sensor 21, the weighing sensor 10, the optical fiber temperature sensor 14, and the optical fiber humidity sensor can feedback signals to the numerical control system 5, and display the hot air temperature, the temperature and humidity of the agricultural products, and the weight of the agricultural products through the display screen 6. The numerical control system 5 can control the radio frequency generator 7, the robotic arm 13, the fan 15, and the electric heating tube 20.

[0030] Inside the drying box body 1, a connecting rod 18 is further provided, and both ends of the connecting rod 18 are respectively connected to the drying box body 1 and the hot air hose 17.

[0031] The working principle of the present utility model is as follows: when drying agricultural products, the agricultural products to be dried are placed on the top of the lower electrode plate 12, and the radio frequency generator 7, the fan 15, and the electric heating tube 20 are started through the numerical control system 5. Through the cooperation of the radio frequency generator 7 with the upper electrode plate 11 and the lower electrode plate 12, the agricultural products are rapidly heated under the action of the generated high-frequency electromagnetic waves, so that the water molecules evaporate and separate from the agricultural products to perform radio frequency drying on the agricultural products.

[0032] The fan 15 starts, and the fan 15 sucks in air through the air inlet pipe 19. The electric heating tube 20 heats the air, and the heated air is conveyed to the inside of the drying box body 1 through the hot air pipe 16 and the hot air hose 17. The hot air blows towards the agricultural products to dry the agricultural products by hot air. The temperature sensor 21 detects the temperature of the heated air in real time, and feeds back the signal to the numerical control system 5 through a wire. The air temperature is displayed on the display screen 6.

[0033] The weighing sensor 10 detects the weight of the agricultural products in real time, and feeds back the signal to the numerical control system 5 through a wire. The weight of the agricultural products is displayed on the display screen 6. According to the weight of the agricultural products, the radio frequency generator 7, the fan 15 and the electric heating tube 20 can be controlled by the numerical control system 5 to timely adjust the electromagnetic wave frequency of the radio frequency drying mechanism and the air temperature and air volume of the hot air.

[0034] The optical fiber temperature sensor 14 and the optical fiber humidity sensor respectively detect the temperature and humidity of the dried agricultural products in real time, and feed back the signal to the numerical control system 5 through a wire. The temperature and humidity of the agricultural products corresponding to the air outlet of the hot air hose 17 are displayed on the display screen 6. According to the humidity and temperature of the agricultural products, the robotic arm 13 can be controlled by the numerical control system 5 to timely adjust the hot air direction of the hot air hose 17 blowing towards the agricultural products.

[0035] The above-described embodiments are only the preferred embodiments of the utility model, and do not limit the implementation scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent shall be included in the scope of the utility model patent application.

Claims

1. A radio frequency hot air combined drying device, comprising a drying box (1), characterized in that: It also includes a radio frequency drying mechanism and a hot air drying mechanism, a weighing mechanism is arranged inside the drying box (1), and a mechanical arm (13) is fixedly arranged on the inner wall of the drying box (1); The radio frequency drying mechanism comprises a radio frequency generator (7), an upper electrode plate (11) and a lower electrode plate (12), wherein the radio frequency generator (7) is arranged on the top of the drying box (1), the upper electrode plate (11) is arranged on the bottom of the top plate of the drying box (1), and the lower electrode plate (12) is arranged on the weighing mechanism; The hot air drying mechanism comprises a fan (15), an air inlet duct (19), a hot air duct (16) and an electric heating tube (20); the air inlet end of the fan (15) is connected to the air inlet duct (19); the electric heating tube (20) is arranged inside the air inlet duct (19); the air outlet end of the fan (15) is connected to the hot air duct (16); one end of the hot air duct (16) extends to the inside of the drying box (1) and is connected to a hot air hose (17); the other end of the hot air hose (17) is connected to the end of the mechanical arm (13).

2. The radio frequency hot air combined drying device according to claim 1, characterized in that: The weighing mechanism comprises a support frame (8), a support plate (9) and a weighing sensor (10); the support plate (9) is located above the support frame (8), and the weighing sensor (10) is arranged between the support frame (8) and the support plate (9); and the lower electrode plate (12) is arranged on top of the support plate (9).

3. The radio frequency hot air combined drying device according to claim 1, characterized in that: An optical fiber temperature sensor (14) and an optical fiber humidity sensor are provided at the end of the mechanical arm (13).

4. The radio frequency hot air combined drying device according to claim 1, characterized in that: A right bracket (2) is arranged on one side of the drying box (1), and a display screen (6) is arranged on the top of the right bracket (2); a fan bracket (4) is arranged on the other side of the drying box (1), and a left bracket (3) is arranged between the fan bracket (4) and the drying box (1), and the hot air duct (16) is located on the top of the left bracket (3).

5. The radio frequency hot air combined drying device according to claim 4, characterized in that: The fan (15) is arranged on the top of the fan bracket (4), and a temperature sensor (21) is fixedly arranged on the inner wall of the air inlet duct (19).

6. The radio frequency hot air combined drying device according to claim 5, characterized in that: A numerical control system (5) is also provided on the top of the drying box (1), and the numerical control system (5) is connected to the display screen (6), the radio frequency generator (7), the mechanical arm (13), the fan (15), and the electric heating tube (20) through wires.

7. The radio frequency hot air combined drying device according to claim 1, characterized in that: A connecting rod (18) is also provided inside the drying box (1), and two ends of the connecting rod (18) are respectively connected to the drying box (1) and the hot air hose (17).

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