CN203952359U - A kind of solar energy glass greenhouse type vegetable-fruit drying device - Google Patents

Abstract

The utility model discloses a solar glass greenhouse type fruit and vegetable drying device, which comprises an air preheater, an air heat collector, a drying box, a large water tank and a solar water heater connected in sequence. The solar glass greenhouse type fruit and vegetable drying device of the utility model uses vacuum glass as the wall of the drying box to maximize the use of solar radiation energy, so that the top layer of materials can directly absorb solar radiation energy, which changes the low temperature and high temperature of the top layer of materials in the general drying process. Wet and dry conditions; an exhaust control valve is installed on the exhaust pipe to control the exhaust air volume; an induced draft fan, a hot air auxiliary heater, an air heat collector and an air volume are installed in sequence on the pipeline connecting the air inlet pipe and the drying box. The control valve can control the air intake and hot air temperature; the hot water supply control valve is installed on the high-temperature water inlet pipe to control the flow of hot water; the air preheater is used to recover the waste heat in the waste hot air, which improves the energy utilization rate.

Description

A solar glass greenhouse type fruit and vegetable drying device

technical field

The utility model belongs to the technical field of drying and processing of fruits and vegetables, in particular to a solar glass greenhouse type fruit and vegetable drying device.

Background technique

my country is a large agricultural country, and drying work is a necessary link in the processing of agricultural and sideline products, and it consumes a lot of energy. Dehydrating and drying the harvested fruits and vegetables in the sun or drying them indoors with coal or charcoal for long-term storage is a long-term drying method in my country. The natural drying cycle is long, and it is vulnerable to insects, flies, dust pollution and rain, which affects product quality or causes mildew and deterioration; using coal and charcoal indoor drying methods will waste a lot of conventional energy and cause environmental damage. Pollution, while the sulfur and phosphorus content of baked products is high, which cannot meet the requirements of green and environmentally friendly food. As an energy-saving, high-efficiency, emerging, clean and environmentally friendly drying technology, solar drying can make full use of solar radiation energy, save a lot of conventional energy, and have significant economic benefits; using solar drying devices to dry products has short drying cycles and high drying efficiency. advantage. Our country is rich in solar energy resources, making full use of solar energy has far-reaching significance for improving our country's agricultural production level, saving energy and protecting the environment.

Utility model content

The purpose of the utility model is to provide a solar glass greenhouse type fruit and vegetable drying device, which solves the problems of low quality, low efficiency and high energy consumption of traditional fruits and vegetables.

The technical scheme adopted by the utility model is a solar glass greenhouse type fruit and vegetable drying device, which includes an air preheater, an air heat collector, a drying box, a large water tank, and a solar water heater connected in sequence.

The utility model is also characterized in that,

The outside of the drying box is made of aluminum alloy frame and vacuum glass. There is a trolley inside the drying box. Heating coils are installed on the trolley. There are material trays on each layer of heating coils. There is a row of wet fans installed at the dehumidification outlet, and an exhaust pipe is connected outside the dehumidification outlet of the drying box, and an exhaust control valve is installed on the exhaust pipe; the exhaust pipe is connected with the hot fluid inlet of the air preheater; the air The cold fluid outlet of the preheater is connected to the hot air inlet of the drying box through the air inlet pipe; an air equalizing plate connected with the air inlet pipe is arranged on the bottom of the drying box, and the air inlet pipe is connected with the drying box. Induced fans, hot air auxiliary heaters, air collectors and air volume control valves.

The solar water heater includes a solar water tank, the solar water tank is fixed on the top of the solar support and connected to the upper end of the solar vacuum hot water pipe, the solar vacuum hot water pipe is at an angle of 25 to 45° with the ground, and an electric heater is installed in the solar water tank;

The solar water heater is connected to the top of the large water tank through a water supply pipe, and a water supply control valve and a water pump are installed on the water supply pipe; the bottom side of the solar water tank is connected to the heating coil in the drying box through a high-temperature water inlet pipe, and a water supply is installed on the high-temperature water inlet pipe. Hot water control valve; the cold water outlet of the heating coil is connected to the water pump through the low-temperature return pipe, and the water pump is connected to the top side of the large water tank through the low-temperature return pipe.

The beneficial effect of the utility model is that the selection of vacuum glass for the wall of the drying box can maximize the use of solar radiation energy, so that the top layer of material can directly absorb the solar radiation energy, changing the general drying process where the top layer of material is dried at low temperature and high humidity. condition; the exhaust pipe is provided with an exhaust control valve, which can control the exhaust air volume; the pipeline connected to the air inlet pipe and the drying box is installed with an induced draft fan, a hot air auxiliary heater, an air collector and an air volume control valve in sequence. The air volume and hot air temperature can be controlled; the hot water supply control valve is installed on the high temperature water inlet pipe to control the flow of hot water; the air preheater is used to recover the waste heat in the waste hot air, which improves the energy utilization rate.

Description of drawings

Fig. 1 is the main structural schematic diagram of the solar glass greenhouse type fruit and vegetable drying device of the present invention;

Fig. 2 is the top view structure diagram of the utility model solar glass greenhouse type fruit and vegetable drying device;

Fig. 3 is a schematic diagram of the structure inside the drying box of the solar glass greenhouse type fruit and vegetable drying device of the present invention.

In the figure, 1. Air preheater, 2. Exhaust pipe, 3. Exhaust air control valve, 4. Humidity exhaust fan, 5. High temperature water inlet pipe, 6. Hot water supply control valve, 7. Electric heater, 8 .Solar vacuum hot water pipe, 9. Solar support, 10. Water supply control valve, 11. Water supply pipe, 12. Solar water tank, 13. Large water tank, 14. Water pump, 15. Low temperature return pipe, 16. Return water control valve , 17. Drying box, 18. Air volume control valve, 19. Air collector, 20. Induced fan, 21. Hot air auxiliary heater, 22. Air inlet pipe, 23. Solar water heater, 24. Aluminum alloy frame, 25. Vacuum glass, 26. Uniform air plate, 27. Heating coil, 28. Small trolley, 29. Material tray.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The structure of the utility model solar glass greenhouse type fruit and vegetable drying device, as shown in Figure 1 and Figure 2, comprises an air preheater 1, an air heat collector 19, a drying box 17, a large water tank 13, and a solar water heater 23 connected in sequence.

As shown in Figure 3, the outside of drying box 17 is made of aluminum alloy frame 24 and vacuum glass 25, and trolley 28 is arranged inside, and heating coil 27 is installed, and material and material tray 29 are placed on the top of heating coil 27, and drying box The top of 17 is provided with a dehumidification port, and a row of wet blowers 4 is installed at the dehumidification port, and the bottom surface of the bottom of the drying box 17 is provided with an even air plate 26; There is an exhaust control valve 3; in order to make full use of the waste heat in the exhausted hot air during the day, the exhaust pipe 2 is not directly connected to the ambient atmosphere, but is connected to the hot fluid inlet of the air preheater 1, and the air preheater The hot fluid outlet of 1 is the air exhaust port of the equipment, and the cold fluid inlet of the air preheater 1 is the air inlet of the equipment, which communicates with the ambient atmosphere; the cold fluid outlet of the air preheater 1 passes through the air inlet pipe 22 It is connected with the hot air inlet of the drying box 17; the bottom surface of the drying box 17 is provided with an air equalizing plate 26 connected with the air inlet pipe 22, and the air inlet pipe 22 is connected with the drying box 17. On the pipeline, an induced draft fan 20, hot air Auxiliary heater 21, air heat collector 19 and air volume control valve 18; Install hot blast auxiliary heater 21 mainly to consider the needs of improving hot blast temperature.

Solar water heater 23 comprises solar water tank 12, solar vacuum hot water pipe 8, solar support 9 etc.; It is an included angle of 25-45°; considering that the equipment can continue to dry in rainy days, an electric heater 7 is installed in the solar water tank 12; There is a water supply control valve 10 and a water pump 14; the bottom side of the solar water tank 12 is connected to the heating coil 27 in the drying box 17 through a high-temperature water inlet pipe 5, and a hot water supply control valve 6 is installed on the high-temperature water inlet pipe 5; the heating coil The other end of 27 is that the cold water outlet is connected with the water pump 14 by the low temperature return pipe 15, and the water pump 14 is connected with the top side of the large water tank 13 by the low temperature return pipe 15.

When the utility model is drying fruits and vegetables, its drying method is as follows: the dried fruits and vegetables materials are packed in the drying box 17 . During the daytime, when the sun is sufficient, open the air exhaust control valve 3, open the induced draft fan 20 and the humidity exhaust fan 4, close the hot water supply control valve 6, the ambient cold air enters the air preheater 1 from the air inlet, and is first discharged from the drying box 17 is preheated by the waste hot air, and then pressed into the air heat collector 19 by the induced draft fan 20, where it is heated, and finally enters the drying box 17, and the fruits and vegetables are dried by hot air after the air uniformity plate 26; The dry box 17 that vacuum glass 25 is made is equivalent to a greenhouse, also carries out the absorption of heat; The waste hot air after drying is sucked into the air preheater 1 by dehumidifying fan 4 and goes to preheat cold air. At night, when the light is insufficient, the hot water supply control valve 6 is opened, and the hot water heated during the daytime in the solar water tank 12 is sent to the heating coil 27 in the drying box 17 through the high temperature water inlet pipe 5, and the heating coil 27 turns the hot water The heat is released to the hot air and materials for drying, and the temperature of the hot water released after the heat is lowered to become cold water flowing out from the other end of the heating coil 27, sucked by the water pump 14 and flowing back to the large water tank 13 to be recovered, and the water in the large water tank 13 It will be drawn into the solar water tank 12 by the water pump 14 for heating the next day. When it is cloudy, turn on the electric heater 7 to heat the water in the solar water tank 12 . During the working process of the equipment, if the drying temperature in the drying box 17 is too high, then turn down the hot water supply control valve 6 or the air volume control valve 18, otherwise turn it up. If the hot blast temperature is not enough, the hot blast auxiliary heater 21 can be turned on for heating.

Claims (1)

1. A solar glass greenhouse type fruit and vegetable drying device, is characterized in that, comprises successively connected air preheater (1), air heat collector (19), drying box (17), large water tank (13), solar water heater (twenty three); Described dry box (17) exterior is made of aluminum alloy frame (24) and vacuum glass (25), and trolley (28) is arranged in the dry box (17), and heating coil is installed on the trolley (28) (27), a material tray (29) is placed on each layer of heating coil (27), and the top of the drying box (17) has a dehumidification outlet, and a row of wet blowers (4) is installed at the dehumidification outlet, and the drying oven (17) ) is connected with an exhaust pipe (2) outside the moisture outlet, and an exhaust control valve (3) is installed on the exhaust pipe (2); the exhaust pipe (2) is connected with the thermal fluid inlet of the air preheater (1) The cold fluid outlet of the air preheater (1) is connected to the hot air inlet of the drying box (17) through the air inlet pipe (22); An induced draft fan (20), a hot air auxiliary heater (21), an air heat collector (19) and an air volume control unit are successively installed on the pipeline connecting the air plate (26), the air inlet pipe (22) and the drying box (17). valve (18); Described solar water heater (23) comprises solar water tank (12), and solar water tank (12) is fixed on the top of solar support (9) and links to each other with the upper end of solar vacuum hot water pipe (8), and solar vacuum hot water pipe (8) It is at an angle of 25 to 45° with the ground, and an electric heater (7) is housed in the solar water tank (12); The solar water heater (23) is connected with the top of the large water tank (13) by the replenishment pipe (11), and a replenishment control valve (10) and a water pump (14) are installed on the replenishment pipe (11); The side part is connected to the heating coil (27) in the drying box (17) through a high-temperature water inlet pipe (5), and a hot water supply control valve (6) is installed on the high-temperature water inlet pipe (5); the heating coil (27) The cold water outlet is connected with the water pump (14) by the low temperature return pipe (15), and the water pump (14) is connected with the top side of the large water tank (13) by the low temperature return pipe (15). the