CN201957726U

CN201957726U - Novel solar humidity-maintained drying equipment

Info

Publication number: CN201957726U
Application number: CN2010206839949U
Authority: CN
Inventors: 李述刚; 丁羽; 高英; 牛希跃
Original assignee: Tarim University
Current assignee: Tarim University
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-09-07
Anticipated expiration: 2020-12-28

Abstract

The utility model discloses novel solar humidity-maintained drying equipment, which is characterized in that a hot water circulating pipeline is formed between a solar heat collector and one water outlet of a hot water tank through a water pipe with a hot water circulating pump, a drying circulating pipeline is formed between the other water outlet of the hot water tank and the hot water tank sequentially through a water pipe with a drying circulating pump, a heat exchanger, an electric heating water tank and an electromagnetic valve, the heat exchanger is installed in a solar drying room, a humidifier, a humidity sensor, a dehumidifier and a temperature sensor which are installed in the solar drying room are respectively connected with a programmable logic controller (PLC) through conducting wires, a water level measuring instrument and a temperature sensor which are installed in the hot water tank are respectively connected with the PLC, an electric heating tube, a temperature sensor and a water level sensor which are installed in the electric heating water tank are respectively connected with the PLC, the PLC is additionally connected with a temperature sensor which is installed on the solar heat collector, and a bypass pipe with an electromagnetic valve is connected between the water outlet of the electric heating water tank and the water inlet of the drying circulating pump.

Description

A kind of new type solar energy drying equipment of preserving moisture

Technical field

The utility model relates to a kind of fruit drying plant, particularly a kind of new type solar energy drying equipment of preserving moisture.

Background technology

Along with the Xinjiang agricultural structure is adjusted, the industry of planting forest or fruit tress cultivated area enlarges rapidly, the cultivated area of wherein making dried grape, red date, apricot increases the fastest, brought huge economic benefit to the peasant, but drying technologies such as grape, apricot and red date adopt air dry and artificial drying dual mode at present mostly at present.Adopt of air dry dried more, and be convenient and simple, treats that jujube is fully ripe to gather after painted, be stacked at the threshing ground, look air themperature and humidity conditions and shone 10-20 days, this method is adopted by wide farmers at present, and advantage is simple and convenient, do not need the energy, shortcoming is to handle fruit in a large number, and the water content of dry back fruit does not reach national standard generally greater than 28%, commodity rate is little, can not carry out suitability for industrialized production.At present, it is main method that the production equipment of domestic artificial drying grape, apricot and red date generally adopts drying room drying, grape, apricot, red date often exist color, quality relatively poor in drying process, loss such as nutrient is bigger, whole drying product quality has much room for improvement, and because such drying present energy that uses is mainly based on coal, electricity and natural gas, energy consumption is big, environmental disruption and heavy contamination.

The Xinjiang solar energy resources is very abundant, annual sunshine time is 2550 ~ 3500 hours, and percentage of sunshine is 60% ~ 80%, and a year radiation amount reaches 5430 ~ 6670MJ/m2, year radiant illumination total amount is regional higher by 10%～15% than China same latitude, and is regional higher by 15%～25% than the middle and lower reach of Yangtze River.Occupy second in the whole nation, be only second to Tibet plateau.Annual sunshine, the fate greater than 6 hours was 250 ~ 325 days, and sunshine, temperature was higher than 10 ℃ fate generally more than 150 days.Therefore, solar energy development utilization in Xinjiang has good prospect.

Summary of the invention

The purpose of this utility model is to provide a kind of new type solar energy drying equipment of preserving moisture, it is simple in structure, cheap, adopting water cycle heat exchange formula principle to change solar energy into heat energy dries fruit, not only the cleaning, high efficiency, and dependable performance, energy savings and the drying product quality of raising greatly.

The purpose of this utility model is to realize like this, a kind of new type solar energy drying equipment of preserving moisture, comprise solar thermal collector, boiler and PLC controller, constitute hot water circulating pipeline by the water pipe that hot water circulating pump is housed between solar thermal collector and boiler one delivery port, another delivery port of boiler is successively by being equipped with the water pipe of oven dry circulating pump, heat exchanger, electric heat water tank and magnetic valve and boiler constitute the oven dry circulation line, heat exchanger is installed in the solar energy drying room, be installed in the humidifier in the solar energy drying room, humidity sensor and wet exhauster, temperature sensor links to each other with the PLC controller by lead respectively, the floodometer and the temperature sensor that are installed in the boiler link to each other with the PLC controller respectively, be installed in the electrothermal tube in the electric heat water tank, temperature sensor and level sensor link to each other with the PLC controller respectively, the PLC controller also with the temperature sensor and the said hot water circulating pump that are installed on the solar thermal collector, the oven dry circulating pump links to each other, and also is being connected a bypass pipe that has magnetic valve between the delivery port of electric heat water tank and the water inlet of drying circulating pump.

The utility model mainly is made up of solar thermal collector, boiler, magnetic valve, temperature sensor, solar energy drying room, heat exchanger, circulating pump, humidifier, humidity sensor, floodometer and PLC controller etc.It is simple in structure, and is cheap, adopts water cycle heat exchange formula principle to change solar energy into heat energy fruit is dried, not only cleaning, high efficiency, and dependable performance, energy savings and the drying product quality of raising greatly.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a syndeton schematic diagram of the present utility model.

The specific embodiment

A kind of new type solar energy drying equipment of preserving moisture as shown in Figure 1, comprises solar thermal collector 8, boiler 7 and PLC controller 14, constitutes hot water circulating pipeline by the water pipe that hot water circulating pump 3 is housed between solar thermal collector 8 and boiler 7 one delivery ports.Another delivery port of boiler 7 constitutes the oven dry circulation line by water pipe, heat exchanger 18, electric heat water tank 10 and magnetic valve and the boiler 7 that oven dry circulating pump 4 is housed successively.The water inlet pipe 1 of solar thermal collector 8 is connecting running water pipe, and drainpipe 2 is connecting sewer pipe.

Heat exchanger 18 is installed in the solar energy drying room 17, and humidifier 16, humidity sensor 15 and the wet exhauster 13, the temperature sensor 12 that are installed in the solar energy drying room 17 link to each other with PLC controller 14 by lead respectively.

The floodometer 6 and the temperature sensor 5 that are installed in the boiler 7 link to each other with PLC controller 14 respectively.

The electrothermal tube, temperature sensor 11 and the level sensor that are installed in the electric heat water tank 10 link to each other with PLC controller 14 respectively.PLC controller 14 also be installed in solar thermal collector 8 on temperature sensor 9 and hot water circulating pump 3, the oven dry circulating pump 4 link to each other.

Between the water inlet of the delivery port of electric heat water tank 10 and oven dry circulating pump 4, also be connected a bypass pipe that has magnetic valve, in order to avoid boiler 7.

The course of work:

1, the circulation between solar thermal collector 8 and the boiler 7:

(1) solar thermal collector 8 constantly carries out temperature difference circulation with boiler 7 by hot water circulating pump 3 boiler 7 water temperatures is raise, and when water tank temperature reaches setting value (being generally 80 ℃ ~ 90 ℃), PLC controller 14 cuts off hot water circulating pumps 3 automatically, and circulation stops; Otherwise when boiler 7 temperature are lower than setting value, start hot water circulating pump 3, solar thermal collector 8 carries out temperature difference circulation with boiler 7 raises the water temperature in the boiler 7; The water temperature data of boiler 7 are imported PLC controller 14 into by temperature sensor 5; (2) when solar thermal collector 8 outlet temperatures are lower than setting value (being generally 75 ℃), when promptly not reaching the heating-up temperature to boiler 7, can disconnect hot water circulating pump 3, stop circulation, when temperature reaches heating-up temperature to boiler 7, could whether open circulating pump 3 according to the temperature decision of boiler 7; Solar thermal collector 8 outlet temperature data are imported PLC controller 14 into by temperature sensor 9.

2, the circulation between boiler 7 and the solar energy drying room heat exchanger 18:

(1) temperature in drying room 17 is lower than design temperature, and when the temperature of boiler reached heating-up temperature simultaneously, circulating pump 4 started, and hot water is got back to boiler 7 through boiler 7-circulating pump 4-drying room heat exchanger 18-electric heat water tank 10-magnetic valve; Otherwise when the temperature in the drying room 17 is higher than design temperature, close circulating pump 4, stop cycle heat exchange; Temperature data in the drying room imports PLC controller 14 into by temperature sensor 12;

(2) temperature in drying room 17 is lower than design temperature, but when the temperature of boiler 7 can not reach heating-up temperature simultaneously, circulating pump 4 starts, electrothermal tube in the electric heat water tank 10 is started working simultaneously, and hot water is got back to electric heat water tank 10 through electric heat water tank 10-said bypass pipe-circulating pump 4-drying room heat exchanger 18; Otherwise when the temperature in the drying room 17 is higher than design temperature, close circulating pump 4, stop cycle heat exchange while electrothermal tube and quit work; Temperature data in the electric heat water tank 10 imports PLC controller 14 into by temperature sensor 11, and the switch of control electrothermal tube.In order the water in the electric heat water tank 10 to be rapidly heated, the electric heat water tank volume is less, can realize Fast Heating, reduces the loss of electric energy simultaneously.

3, water replanishing device is all installed by water-level control apparatus in boiler 7 and electric heat water tank 10, can pass through the magnetic valve automatic water supplement, guarantees the constant of water level.

4, MCS operation principle:

Humidity sensor 15 is housed in the drying room 17, and when humidity was lower than setting value, humidifier 16 work that are installed in the drying room bottom improved humidity, stop humidification when reaching setting value; When humidity in the drying room 17 surpassed setting value, wet exhauster 13 started, and reduces humidity, reaches when setting humidity, and wet exhauster 13 quits work.

The utility model adopts solar energy (electric supplementary heating) water cycle heat exchange, automatic humidification, and digital display control, high efficiency can be dried fruits such as red date, apricot, grapes fast, and drying superior product quality is simple in structure, reliable operation.

Claims

1. a new type solar energy drying equipment of preserving moisture, comprise solar thermal collector, boiler and PLC controller, it is characterized in that: constitute hot water circulating pipeline by the water pipe that hot water circulating pump is housed between solar thermal collector and boiler one delivery port, another delivery port of boiler is successively by being equipped with the water pipe of oven dry circulating pump, heat exchanger, electric heat water tank and magnetic valve and boiler constitute the oven dry circulation line, heat exchanger is installed in the solar energy drying room, be installed in the humidifier in the solar energy drying room, humidity sensor and wet exhauster, temperature sensor links to each other with the PLC controller by lead respectively, the floodometer and the temperature sensor that are installed in the boiler link to each other with the PLC controller respectively, be installed in the electrothermal tube in the electric heat water tank, temperature sensor and level sensor link to each other with the PLC controller respectively, the PLC controller also with the temperature sensor and the said hot water circulating pump that are installed on the solar thermal collector, the oven dry circulating pump links to each other, and also is being connected a bypass pipe that has magnetic valve between the delivery port of electric heat water tank and the water inlet of drying circulating pump.