CN208639568U

CN208639568U - Trough solar dryer

Info

Publication number: CN208639568U
Application number: CN201721308428.8U
Authority: CN
Inventors: 张文涛; 辛旋; 李庆领
Original assignee: Qingdao University of Science and Technology
Current assignee: Qingdao University of Science and Technology
Priority date: 2017-10-11
Filing date: 2017-10-11
Publication date: 2019-03-26
Anticipated expiration: 2027-10-11

Abstract

The utility model provides a kind of trough solar drier, which utilizes solar energy drying, and mainly by groove profile paraboloid collecting plate, collecting plate is fixed on steel bracket；Positioned at groove profile collecting plate illumination focal position, the glass-vacuum tube of absorbent coating is coated with equipped with one；Motor and sun autotracking device are set on steel bracket；Inlet positioned at drying box is connected with blower, and is equipped with air uniform plate and resistance wire in inlet；It is located in the box body and is equipped with two layers of material frame, place stainless steel Dropbox on material frame；Air outlet positioned at drying box is connected with dehumidifier, and dehumidifier is connected by air hose with heat exchanger；It is covered positioned at drying box case top using transparent glass, and is equipped with ventilation opening；Chamber door is equipped with positioned at drying box side；Positioned at drying box bottom set there are four steering wheel group at.Present apparatus solar energy heating is high-efficient, and rate of drying is fast, saves drying time, clean pollution-free, and makes full use of waste heat, reaches energy-saving and environment-friendly purpose.

Description

Trough solar drier

Technical field

The utility model relates to a kind of trough solar drier, refer in particular to a kind of be incorporated in trough concentrator and drying box Solar dryer together.

Background technique

Currently, China is the maximum country of fruits and vegetables Isoquant in the world.According to statistics, 2012, China's fruit was total Yield is more than 1.51 hundred million t, 7.08 hundred million t of vegetables total output.Therefore, the agricultural product such as fruits and vegetables are drying has become processing of farm products, increases A kind of important means of value.But compared with developed countries, the dried product ratio of agricultural products in China is still relatively low.By taking the U.S. as an example: The dried products such as onion, garlic, raisins processing capacity accounts for 20%, 80%, the 25% of its harvest yield respectively；Before and after its processing of farm products Average output value ratio up to 1:3.8, the post-harvest loss of agricultural product is only 1.7%~5%.According to the preliminary statistics, China is dehydrated at present The processing capacity of vegetables only accounts for 10% or so of total output, and the dried product ratio of fruit is just lower, being averaged before and after processing of farm products The output value is than being only 1:1.9.

It is mainly nature air dry in the dry mode of agricultural products in China, and natural air dry is vulnerable to factors such as weather, manpowers It influences, such as rainy days, microorganism is easy to breed, and natural drying process is slow, and the time is long；And the sanitary condition of product also by To certain influence, such as vulnerable to insect, dust and rainwater, pollution, seriously causes product quality to decline or go mouldy and rot, it is difficult to is big Large-scale production, continuous production process.

China has a vast territory, and has the solar energy resources of very abundant.It is estimated that China's land surface receives too every year Positive radiation energy is about 50x10^18kJ, and sun annual radiant all quality in all parts of the country is up to 335~837kJ/cm², intermediate value 586kJ/cm²。 Solar energy hot blast drying is one and heated water using solar radiation, heats air with water, and the air of heating is blown into dry In dry case, to the technology of drying farm products, agricultural product quality, energy saving and protection can be promoted with solar energy hot blast drying Natural environment.

Utility model content

The utility model aim is to provide a kind of trough solar drier, to solve the drawbacks of crop spontaneously dries, It improves drying efficiency and shortens drying time.

The utility model is provided the following technical solutions: the trough solar drier includes trough concentrator, blower, does Dry case, heat exchanger, dehumidifier, ventilation shaft, resistance wire, air uniform plate, universal wheel.The trough concentrator is equipped with concave surface thermal-arrest Plate, groove profile collecting plate sunlight focal position are equipped with the glass tube with vacuum for being coated with absorbent coating, and it is automatic that heat collector right part is equipped with sunlight Tracking device and motor, aqueduct are equipped with water pump；The dry box body uses double-side color steel plate, central filler thermal insulating material Material；The drying box side is equipped with air inlet, and connect with blower and heat exchanger, and air outlet is connect with dehumidifier, is used for waste heat Recycling, top of the box is equipped with tubaeform top surface of glass, and is equipped with ventilation opening, and humid air is discharged, and material disc uses stainless steel Dropbox, material pan bottom are equipped with pulley and are placed on material frame guide rail.

Detailed description of the invention

Fig. 1 is the utility model trough solar dryer configuration schematic diagram.

Specific embodiment

The utility model trough solar drier, as shown in Figure 1, its structure includes: 1- air hose 2- dehumidifier 3- case Push up 4- thermal insulation material 5- ventilation opening 6- stainless steel Dropbox 7- air uniform plate 8- chamber door 9- universal wheel 10- tank wall 11- blower 12- material frame 13- heat exchanger 14- collecting plate 15- resistance wire 16- water pump 17- sun autotracking device 18- motor 19- vacuum tube

When trough solar drier works, the collecting plate 14 of trough concentrator, which focuses on illumination, is coated with absorbent coating On vacuum tube 19, water in heating pipe, water pump 16 drives water circulation in pipeline, meanwhile, sun autotracking device 17 is automatic Lighting angle is captured, signal is passed into motor 18, driving motor drives trough concentrator rotation, to adjust most suitable inclination angle Degree.

Hot-air is constantly blown into drying box by the air in the hot water heating heat exchanger 13 of vacuum pipe, blower 11, is done Dry box body 10 uses double-side color-steel, and central filler thermal insulation material 4 prevents heat loss.It, can when illumination is insufficient or no light Start-up resistor silk 15 carries out auxiliary heating, meets dry require.Blower be sent into hot wind shunted through air uniform plate 7, can to crop into Row evenly drying prevents local desiccation over or under.Two layers of material frame 12 is equipped in cabinet, material frame is led equipped with pulley Rail can be moved easily stainless steel Dropbox 6.3, cabinet top flare, is covered using transparent glass, and sunlight can be injected in case, add The temperature of air in hot tank, and top of the box sectional area gradually becomes smaller, and moist steam in case can be made to assemble box top, thus will It is discharged outside case from ventilation opening 5, avoids and is drawn it out using blower, saves electric energy.Wall sides are provided with air outlet, and with Dehumidifier 2 is connected, and partial HAT is sent into heat exchanger heating after dehumidifier dehumidifies, through ventilation duct 1, does again to material It is dry, make full use of waste heat.

Claims

1. The trough type solar dryer is characterized in that: it mainly comprises a trough type heat collector system and a drying box system, and the said collector system is mainly composed of a trough type heat collector plate, a vacuum tube coated with an adsorption coating, a motor, a sunlight It is composed of an automatic tracking device and a water pump. The air inlet of the drying box system is connected with the fan and the heat exchanger, and an electric heating device is arranged at the air inlet. The top is covered with transparent glass and is provided with a vent, the outlet of the drying box is connected with the dehumidifier, and the bottom of the box is provided with a universal wheel.

2. The trough type solar dryer according to claim 1 is characterized in that: the trough type heat collector is provided with an automatic sunlight tracking device, and a motor is used to drive the rotation shaft of the collector to rotate, and the angle of rotation automatically follows the direction of illumination, Make the trough solar panel receive sunlight in the largest area.

3. The trough type solar dryer according to claim 1, characterized in that: the vacuum tube is coated with an adsorption coating, which absorbs the light energy collected by the heat collecting plate, heats the water in the pipe, and at the same time, the water pump drives the heat collecting pipe. water cycle.

4. The trough type solar dryer according to claim 1, characterized in that: the middle part of the side wall of the drying box is provided with a uniform air plate, which is used to make the hot air blown by the fan evenly distribute in the box, and the uniform air An electric heating device is installed at the board position.

5. The trough solar dryer according to claim 1, characterized in that: the drying box is provided with a waste heat recovery device, and the hot air containing wet steam is passed through the air outlet into the dehumidifier, and the dehumidifier is dried. The hot air is connected to the heat exchanger through the air duct, and a waste heat recovery device is added, mainly to make full use of the waste heat and reduce unnecessary heat loss.

6 . The trough solar dryer according to claim 1 , wherein the material rack is provided with guide rails, and the stainless steel mesh disk is provided with pulleys, which can be easily moved. 7 .

7. The trough solar dryer according to claim 1 is characterized in that: the top of the drying box is covered with transparent glass and is in the shape of a horn, the transparent glass can make sunlight enter the box, and the air temperature in the heating box is heated. , The top of the box is set as a horn shape, the wet steam can be more easily gathered on the top of the box, and it is easy to be discharged from the drying box.