CN205641908U - Solar energy circulation drying -machine - Google Patents

Abstract

The utility model discloses a solar cycle dryer belonging to the range of solar energy utilization equipment. Including solar heat collection system, drying device, waste heat recovery device and control module. Among them, the solar heat collection system is installed on the bracket by N solar purple gold tubes side by side, and the solar purple gold tubes are respectively connected with the main passage through connecting hoses; the two ends of the main passage are respectively connected with the bottom of the drying room shell of the drying device through thick hoses. The installed axial flow fan is connected to the pressure reducing valve on the top; the control module is installed on the left side of the drying room shell, the right side is the drying room, and the racks are placed layered on the axial flow fan; the utility model can be used in large quantities It saves conventional energy, has significant economic benefits, and has the positive effects of energy saving and high efficiency, stable performance, clean and pollution-free, and wide application range.

Description

Solar Cycle Dryer

technical field

The utility model belongs to the range of solar energy utilization equipment, in particular to a solar energy circulation dryer.

Background technique

Most of the traditional drying equipment is based on fuel oil, coal, electric heating, etc. The dehydration drying technology in food processing is closely related to our life and production, especially in the production fields of agriculture, chemical industry, food processing, etc., its application is very common .

However, most of this type of drying equipment is based on high energy consumption, which is not conducive to the effective utilization of resources, and also has defects such as environmental pollution and low drying efficiency. On the other hand, as low-carbon energy saving, green environmental protection, sustainable development and other ideologies are deeply rooted in the hearts of the people, the drying of general agricultural by-products and food requires a lower temperature level, about 40-70 degrees Celsius, which coincides with solar heating. As a clean and environmentally friendly energy source, solar energy is gradually receiving widespread attention and recognition.

Utility model content

The purpose of this utility model is to propose a solar cycle dryer for the traditional drying equipment which is mostly built on the basis of high energy consumption, which is not conducive to the effective utilization of resources, and also has defects such as environmental pollution and low drying efficiency. , is characterized in that it includes a solar heat collection system, a drying device, a waste heat recovery device, and a control module; wherein, the solar heat collection system is composed of N solar purple gold tubes 2 installed side by side on a bracket 1, and the solar purple gold tubes 2 are respectively Connect with the main channel 13 through the connecting hose 8; the two ends of the main channel 13 are respectively connected with the axial flow fan 9 installed at the bottom of the drying room housing 4 of the drying device and the pressure reducing valve 7 at the top through the thick hose 12; The energy control module 10 is installed on the left side of the drying room housing 4, the drying room is on the right side of the drying room housing 4, and the shelf 11 is layered on the axial flow fan 9; the axial flow fan 9 is fixed on the drying chamber. There are 5 air inlets at the bottom of the drying room housing 4, and 6 air outlets at the top of the drying room housing 4 are connected to a three-way pipeline 16, and a pressure relief valve 7 is fixed on the top of the three-way pipeline 16. The solar purple gold tube 2 is composed of an air inlet pipe 14 and an air outlet pipe 17 sealed and fixed in the vacuum heat collecting pipe; the air outlet pipe 17 is connected with the communication hose 8 .

The waste heat recovery device is composed of a thick hose 12 connected with a three-way pipe 16, and a check valve 3 connected between the thick hose 12 and the main channel 13;

The energy control module is composed of a main control PLC connected to a motor drive unit, a circulating fan, a sensor array, an auxiliary electric heating module, an AC contactor and a common node controlled by a switch; wherein the AC contactor is connected to the power module; the motor drive unit, The speed control unit and the axial flow fan are connected sequentially; the main control PLC is Gumei EX2N series PLC product.

The N of the N solar purple gold tubes is 1-20.

The beneficial effect of the utility model is that a large amount of conventional energy can be saved, the economic benefit is remarkable, and the utility model has the positive effects of energy saving and high efficiency, stable performance, clean and pollution-free, and wide application range. Has the following characteristics:

1. Strictly control the drying process to achieve efficient drying of jujube and ensure the maximum retention of nutrients in jujube.

2. Waste heat recovery realizes high utilization rate of energy utilization and realizes energy saving and emission reduction

3. The energy used in the whole process comes directly from solar energy, which is truly green and environmentally friendly. Fast heating speed and high drying efficiency.

4. Automatic control system to achieve drying, precise and efficient heating.

5. The equipment is small and suitable for small farmers. All agricultural products that need to be dried can be dried by this equipment, which is highly in line with the national policy of targeted poverty alleviation.

Description of drawings

Figure 1 is a schematic diagram of a solar circulation dryer.

Figure 2 is a schematic diagram of a solar purple gold tube.

Figure 3 is a schematic diagram of the composition of the control module.

detailed description

The utility model provides a solar cycle dryer, which includes a solar heat collection system, a drying device, a waste heat recovery device and a control module. Be described below in conjunction with accompanying drawing.

Figure 1 shows a schematic diagram of a solar circulation dryer. In the figure, the solar heat collection system is composed of N solar purple gold tubes 2 installed side by side on the support 1, and the solar purple gold tubes 2 communicate with the main channel 13 through the connecting hose 8 respectively; They are respectively connected to the axial flow fan 9 installed at the bottom of the drying room shell 4 of the drying device and the pressure relief valve 7 on the top; an energy control module 10 is installed on the left side of the drying room shell 4, and the drying room shell 4 The right side is the drying room, and the shelf 11 is layered on the axial flow fan 9; the axial flow fan 9 is fixed at the air inlet 5 at the bottom of the drying room casing 4, and the The air outlet 6 is connected with a three-way pipeline 16, and the top of the three-way pipeline 16 is fixed with a pressure reducing valve 7. The solar purple gold tube 2 is composed of an air inlet pipe 14 and an air outlet pipe 17 sealed and fixed in the vacuum heat collecting pipe; the air outlet pipe 17 is connected with the communication hose 8 (as shown in Figure 2);

The waste heat recovery device is composed of a thick hose 12 connected with a three-way pipe 16, and a check valve 3 connected between the thick hose 12 and the main channel 13;

The N of the N solar purple gold tubes is 1-20. The solar heat collection system of the utility model is connected to the main channel 13 by 20 solar purple gold tubes 2 side by side, and the solar purple gold tubes realize heat collection.

The hot air from the heat collector of the drying device through the main channel 13 is sent to the air inlet 5 at the bottom of the drying chamber by the axial fan 9, and the hot air entering the drying chamber is sent from the bottom of the drying room housing 4. It flows continuously from bottom to top, and is finally discharged from the air outlet 6 on the top of the drying room shell 4; during this process, the hot air fully contacts the dried material, resulting in a temperature difference and a relative humidity difference, which accelerates the moisture diffusion and evaporation of the material. Thereby taking away the moisture in the material to achieve the purpose of drying.

The inlet air is heated by the heat collection system, and part of the heat is consumed in the drying chamber. The temperature of the exhaust gas from the outlet is still around 50°C. From the perspective of saving energy and protecting the environment, the waste heat recovery system passes the exhaust gas from the outlet to the inlet. , mixed with the gas coming in from the heat collecting pipe, and then passed into the drying room to heat the fresh dates again.

A three-way pipe is placed at the air outlet 6 on the top of the drying room shell 4, one end leads to the outside air, and a steam pressure reducing valve 7 is connected to the outlet, and the working pressure of the valve is adjusted to about 200~600kPa, then It will automatically adjust the opening of the valve according to the pressure change of the room body to ensure the stability of the pressure in the drying room; at the same time, it also achieves the purpose of exhausting, and discharges the water vapor generated by the evaporation of jujube in time.

The other end of the three-way pipe leads back to the front end of the main channel. In order to prevent the air coming in from the heat collection system from flowing back to the drying room through the waste heat recovery pipe, we use a backflow prevention check at the connection between the hose and the main channel. Valve 3, so that the gas can only flow in one direction. The returned gas and the inlet gas are fully mixed in the main channel 13, and then pass into the drying chamber together to complete the cycle.

The energy control module is composed of a main control PLC connected to a motor drive unit, a circulating fan, a sensor array, an auxiliary electric heating module, an AC contactor and a common node controlled by a switch; wherein the AC contactor is connected to the power module; the motor drive unit, The speed control unit and the axial flow fan are connected in sequence; the main control PLC is Gumei EX2N series PLC, and the ladder diagram is programmed (as shown in Figure 3).

In the utility model, the solar purple gold tubes are arranged in parallel. The so-called parallel connection means that the air flows into the main pipeline together after being heated in each purple gold tube. Experimental tests show that a single purple gold tube can heat the air to 100°C even in winter when the sun is low or when the auxiliary electric heating module is activated. It can be seen that the parallel arrangement is suitable for drying fruits and vegetables. The entrance of the purple gold tube is sealed, and there are only two thin hoses for air in and out. The air intake hose extends slightly out of the purple gold tube to inhale air from the outside; the inside extends to the bottom of the purple gold tube, and the cold air from the outside enters through the hose. At the bottom of the purple gold tube, due to thermal expansion and contraction, hot air flows upward. The air outlet hose is opposite to the inlet pipe, and slightly extends into the purple gold pipe, and the outside is sealed and connected with the main pipe. The main pipe is a food-grade stainless steel pipe, and there are several holes on the side wall, and the joints for fixing the hose are installed on the holes. The hot air flowing upwards flows into the main pipe through the outlet hose. One end of the main pipeline is sealed, and the other end is connected with the drying room, and the hot air is passed into the drying room. Part of the airflow in the drying room is recovered from waste heat, and part of it is discharged from the outlet.

Claims (4)

1. a solar energy circulating drier, it is characterised in that include solar thermal collection system, drying unit, waste heat recovery dress Put and control module；Wherein, described solar thermal collection system is mounted side by side on the upper group of support (1) by N root solar energy rose gold tube (2) Become；Solar energy rose gold tube (2) is connected with main channel (13) by connection flexible pipe (8) respectively；Main channel (13) two ends are by the softest Manage the air relief valve (7) at axial fan (9) and the top installed (12) baking room housing (4) bottom respectively with drying unit even Connect；Install energy control module (10) in baking room housing (4) left side, baking room housing (4) right side is drying chamber, in axial-flow type Blower fan (9) is layered placement rack (11) above；Axial fan (9) is fixed on the air inlet (5) of baking room housing (4) bottom Place, gas outlet (6) place connecting tee pipeline (16) at baking room housing (4) top, three-way pipeline (16) top fixed decompression valve (7)；Described solar energy rose gold tube (2) is by sealing fixing air inlet pipe (14) in vacuum heat collection pipe and escape pipe (17) forms； Escape pipe (17) connects with connecting flexible pipe (8).

A kind of solar energy circulating drier, it is characterised in that described waste-heat recovery device is by threeway The thick flexible pipe (12) that pipeline (16) connects, the check-valves (3) connected between thick flexible pipe (12) and main channel (13) composition.

A kind of solar energy circulating drier, it is characterised in that described energy control module is by master control PLC connects electric-motor drive unit, circulating fan, sensor array, auxiliary electrical heater module and A.C. contactor respectively and opens Close the common node composition controlled；Wherein A.C. contactor is connected with power module；Electric-motor drive unit, speed adjustment unit, axial flow Blower fan is sequentially connected with；Main control PLC is for turning round and look at beautiful EX2N series of PLC product.

A kind of solar energy circulating drier, it is characterised in that the N of described N root solar energy rose gold tube For 1-20.