CN205119674U - Solar energy dual cycle agricultural product drying equipment - Google Patents

Abstract

The utility model discloses a solar double-circulation drying equipment for agricultural products, which comprises a solar heat collector arranged on a support, an air inlet channel and an air outlet channel are respectively arranged at the upper and lower ends of the support; a drying chamber is arranged under the support for drying There is a uniform air chamber in front of the chamber, a circulation fan is installed on the partition between the drying chamber and the uniform air chamber, and a dehumidification fan is installed behind the drying chamber; The air supply pipe is connected with the air outlet; the top of the drying chamber is connected with the inlet of the induced draft fan, and the outlet of the induced draft fan is connected with the air inlet through the induced air pipe; Wind shutters. The drying system of the drying equipment of the utility model integrates internal circulation and external circulation. The internal and external circulation channels are independent of each other, and the internal and external circulation can be carried out independently or simultaneously according to the needs. It not only makes full use of heat energy and saves energy, but also realizes uniform air drying Effectively guarantee the drying quality of the product.

Description

Solar energy double cycle agricultural product drying equipment

technical field

The utility model relates to a drying device, in particular to a drying system which uses solar energy as a heat source, integrates internal and external double circulation methods, and adopts solar energy heat collection to heat air to treat granular, flake, block and other shapes (including natural shapes and The utility model relates to a solar drying equipment for drying agricultural products of processed shapes), belonging to the field of solar drying equipment.

Background technique

At present, the methods of drying agricultural products mainly include traditional natural drying method, traditional hot air drying method, microwave drying method and low temperature freeze drying method. For a long time, most areas in China still use the original natural drying method for dehydration and drying of agricultural products. This method has a series of problems such as long drying cycle, low efficiency, poor product quality and low hygienic quality; traditional heat sources such as gas, oil, and coal Hot air drying not only greatly damages the color, nutrients and other biologically active substances of agricultural products, but also consumes a lot of energy, causes heavy pollution, high cost, and poor quality; while drying equipment using microwave technology and low-temperature freezing technology, although in quality The efficiency and efficiency have been improved, but it is difficult to popularize and apply because of high energy consumption, high production cost and equipment cost.

The drying system of the existing solar drying equipment only has a single air medium circulation system, which cannot make full use of heat energy, save energy, and cannot achieve uniform air drying, resulting in poor product quality after drying, which needs to be improved urgently.

Utility model content

In order to effectively shorten the drying cycle and improve production efficiency and product quality, the utility model provides a solar double-circulation drying equipment for agricultural products. The drying system integrates internal circulation and external circulation. The circulation is carried out independently or at the same time, which not only makes full use of heat energy and saves energy, but also realizes uniform air drying, thereby effectively ensuring the drying quality of the product.

The technical scheme of the utility model is: a solar double-circulation drying equipment for agricultural products, including a solar heat collector, a drying chamber, a uniform air chamber, a circulation fan, an induced draft fan, a blower fan, a dehumidification fan and a partition; wherein, the solar heat collector The device is installed obliquely on the support, and the upper and lower ends of the solar collector are respectively provided with an air inlet and an air outlet; a drying room is set under the middle of the support, and between the drying room and the solar collector A uniform air chamber is arranged between the drying chamber and a circulating fan is installed on the partition between the drying chamber and the uniform air chamber; a humidity exhaust fan is installed on the side of the drying chamber away from the solar collector; The outlet of the air blower is connected to the outlet of the air blower, and the inlet of the air blower is connected with the air outlet of the solar collector through the air supply pipe; The air inlet channel of the heater is connected; a plurality of return air louvers are arranged on the partition between the drying chamber and the uniform air chamber.

A preferred structure of the utility model: an electric heater is installed at the outlet of the circulation fan; the circulation fan is arranged in the middle of the partition. The electric heater is used as an auxiliary electric heating system for auxiliary heating when the solar energy is insufficient. The electric heating system uses a new type of PTC thermistor material to strengthen the overload protection function. It can be controlled manually or by an automatic control system for timing operation .

In order to achieve a better effect, an upwardly conducting one-way valve is installed in the air induction pipe; an electric control or manual damper is installed at the outlet of the blower.

Another preferred structure of the present utility model: a temperature sensor and a humidity sensor are installed in the drying chamber, and the temperature sensor and the humidity sensor as well as the blower, the circulation fan, the induced draft fan and the dehumidification fan are all connected with the Control box connection.

Yet another preferred structure of the present utility model: a drying bracket for placing a drying tray is installed in the drying chamber, a drying tray and an automatic weighing device can be placed on the drying bracket for placing the drying tray, and the automatic weighing device The signal output terminal is connected with the control box.

Yet another preferred structure of the present utility model: there are multiple return air louvers, which are respectively arranged above and below the partition between the drying chamber and the uniform air chamber.

Another preferred structure of the present utility model: the inclined angle between the solar heat collector and the horizontal plane is preferably 30°-60°; the air supply pipe is preferably horizontally arranged; the air induction pipe It is preferably set vertically with the drying chamber.

Another preferred structure of the utility model: the solar heat collector is composed of an array of three-inlet and three-out solar heat collectors connected in series, parallel or mixed; Insect net and dust net device.

Another preferred structure of the present utility model: the drying chamber and the uniform air chamber are provided with three layers of heat preservation layers; lining composition.

The beneficial effects of the utility model:

1. The drying system of the drying equipment of this utility model integrates internal circulation and external circulation. The internal and external circulation channels are independent of each other, and the internal and external circulation can be carried out independently or simultaneously according to needs, which not only makes full use of heat energy, but also saves energy. , It can also effectively guarantee the drying quality of the product, effectively protect the environment, save energy, and develop new energy while improving product quality and production efficiency.

2. The drying equipment of this utility model is equipped with an even air chamber, and the hot air entering the drying chamber passes through the air uniforming effect of the air uniform chamber before entering the drying chamber, so as to ensure the constant and uniform temperature of the hot air entering the drying chamber, and finally ensure the drying of the product quality.

3. The drying equipment of the utility model adopts an integrated structure, which effectively reduces the occupied space and manufacturing cost, and saves equipment investment.

4. The drying equipment of the present invention can realize automatic control of temperature, humidity and wind speed, and automatic display of weight; it can meet the production and experimental drying of agricultural products.

Description of drawings

Fig. 1 is the front structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right view of Fig. 1;

Fig. 4 is the top view of Fig. 1;

Fig. 5 is the B-B sectional view of Fig. 1;

Fig. 6 is a cross-sectional view along line A-A of Fig. 2 .

Illustration: 1-solar collector, 2-induction duct, 3-insect net and dust-proof net device, 4-induction fan, 5-outlet duct of solar collector, 6-bracket, 7- Air supply pipe, 8-supply fan, 9-uniform air chamber, 10-circulation fan, 11-drying room, 12-humidity exhaust fan, 13-control box, 14-electric heater, 15-return air shutter, 16-placement The drying bracket of the drying tray, 17-the air inlet channel of the solar heat collector, and 18-the clapboard.

detailed description

Referring to Fig. 1-Fig. 6, the utility model provides a kind of solar energy double circulation agricultural product drying equipment, comprises solar heat collector (1), drying chamber (11), even air chamber (9), circulating fan (10), induction Fan (4), air blower (8), dehumidification fan (12) and dividing plate (18); Wherein, solar heat collector (1) is arranged on the support (6) obliquely, in this solar heat collector (1) The upper and lower ends of the upper and lower ends are respectively provided with an air inlet duct (17) and an air outlet duct (5); a drying chamber (11) is arranged below the middle part of the support (6), and the drying chamber (11) is connected with the solar heat collecting A uniform air chamber (9) is arranged between the device (1), and a circulation fan (10) is installed on the partition (18) between the drying chamber (11) and the uniform air chamber (9), and in the drying chamber (11 ) away from the side (back) of the solar heat collector (1) to install a dehumidifying blower (12); The outlet is connected, and the inlet of the blower (8) is connected with the described air outlet channel (5) through the air supply pipe (7); the top of the drying chamber (11) is connected with the inlet of the induced draft fan (4), the The outlet of the induced draft fan (4) is connected with the described air inlet passage (17) through the induced draft pipe (2); A plurality of return air shutters (15) are arranged on the top.

An electric heater (14) is installed at the outlet of the circulating fan (10); the electric heater (14) is used as an auxiliary electric heating system to perform auxiliary heating when solar energy is insufficient, and the electric heating system adopts a new type of PTC Thermistor material, enhanced overload protection function, can be controlled manually or by automatic control system for timing operation.

An upwardly conducting one-way valve is installed in the air induction pipe (2); an electric control or manual damper is installed at the outlet of the blower (8).

A temperature sensor and a humidity sensor are housed in the described drying chamber (11), and the temperature sensor and the humidity sensor as well as the blower (8), the circulation fan (10), the induced draft fan (4) and the dehumidification blower (12) are all compatible with the installation The control box (13) in the bracket (6) is connected.

Drying support (16) is installed in described drying chamber (11), and drying tray and automatic weighing device are housed on this drying support (16), the signal output end of this automatic weighing device is connected with described control box (13) CONNECTION.

The circulating fan (10) is arranged in the middle of the partition (18); the return air louvers (15) are provided in multiples, and are respectively arranged on the partition between the drying chamber (11) and the uniform air chamber (9). (18) above and below.

The solar heat collector (1) is inclined 30°-60° to the horizontal plane; the described air supply pipe (7) is preferably arranged horizontally; the described air induction pipe (2) is vertical to the drying chamber (11) set up.

The solar heat collector (1) is composed of an array of three-inlet and three-outlet solar heat collectors connected in series, parallel or mixed, and an insect removal net is installed at the air inlet of the air inlet duct (17) of the solar heat collector (1) And dust-proof net device (3).

The drying chamber (11) and the uniform air chamber (9) are provided with an insulating layer (not shown), and the insulating layer is composed of three layers of cold plate iron sheet, insulating benzene plate and snow board lining from outside to inside.

The automatic weighing device installed on the support (16) can automatically record the weight of the material in the drying process in real time. The induced draft fan (4) and the dehumidification fan (12) can realize two working modes, automatic and manual, according to the drying temperature and humidity conditions. Set the drying temperature.

The specific use method of the drying equipment of the utility model for drying agricultural products includes:

Spread the agricultural products to be dried on the drying tray, place them on the drying support (16) in the drying chamber (11), close the drying chamber door after loading the agricultural products to be dried; turn on the circulation fan (10), blower (8 ), induced draft fan (4) or exhaust fan (12), the heat collected by the solar collector (1) is sent into the uniform air chamber (9) through the air outlet (5) and the blower (8) in the form of hot air, Send into the drying chamber (11) by the circulation blower (10) on the dividing plate (18) of the drying chamber (11) again; The dehumidification blower (12) moves out the dry room by the qualified product.

When the humidity of the drying chamber (11) is lower than the set humidity, the induced draft fan (4) is turned on, and the dehumidification blower (12) is turned off, so that the internal circulation of the drying system and the external circulation of the drying system of the drying chamber (11) are simultaneously opened and carried out:

The internal circulation of the drying system means that the air drying medium is introduced into the drying chamber (11) from the uniform air chamber (9) by the circulation fan (10) on the partition (18) of the drying chamber (11), and the dry air passes through the drying chamber (11) The wet material in the ) reaches the box body plate equipped with the dehumidification fan (12), and then returns through the wet material, and returns to the uniform air chamber (9) through the return air louver (15) on the partition to form a drying system Inner loop.

The external circulation of the drying system means that the air drying medium is introduced into the drying chamber (11) from the uniform air chamber (9) by the circulating fan (10) on the partition (18) of the drying chamber (11), and the dry air passes through the drying chamber (11) ), the wet material in the drying chamber (11) enters the solar heat collector (1) through the induced draft fan (4), the induced air pipe (2) and the air inlet duct (17) above the drying chamber (11), is heated by the solar heat collection system, and passed through The air outlet duct (5) and the air supply pipe (7) are re-sent into the drying system by the blower fan (8), thereby forming the external circulation of the drying system.

When the humidity in the drying chamber (11) is higher than the set humidity, the induced draft fan (4) is turned off, the dehumidification fan (12) is turned on, the external circulation of the drying system stops, and only the internal circulation of the drying system is carried out. At the same time, the air drying medium passes through After the air blower (8) enters the drying chamber, the wet air medium is discharged from the drying system through the dehumidifying blower (12).

When the temperature of the drying chamber (11) was higher than the set temperature, the air door of the drying chamber (11) directly communicated with the outside world was opened, and the cold air from the outside entered, thereby reducing the temperature of the drying chamber (11) to the set value; when the drying chamber (11) When the temperature is lower than the set temperature, the electric heater (14) is turned on to raise the temperature of the drying chamber (11) to the set temperature. In the case of insufficient solar energy supply (such as at night or when the outdoor temperature is low), the electric heating button can be turned on for auxiliary heating; the frequency converter can operate in automatic and manual modes, with manual programming and timing, and the equipment can be used in unattended conditions The temperature display controller can display the temperature of the solar heat collection system, and the temperature of the system can be controlled by the air intake; the temperature and humidity display controller can display the temperature and humidity of the drying system, and the weighing display controller can display the temperature and humidity of the drying material during the drying process. weight.

Claims (10)

1. A solar double-circulation drying equipment for agricultural products, comprising: a solar heat collector (1), a drying chamber (11), an even air chamber (9), a circulating fan (10), an induced draft fan (4), and a blower fan (8) , exhaust fan (12) and partition (18); wherein, the solar heat collector (1) is obliquely arranged on the support (6), and the upper and lower ends of the solar heat collector (1) are respectively provided with Air inlet passage (17) and air outlet passage (5); Drying chamber (11) is set below this support (6) middle part; It is characterized in that: set evenly between this drying chamber (11) and solar heat collector Wind chamber (9), on the dividing plate (18) between this drying chamber (11) and the uniform air chamber (9), circulating fan (10) is installed; Humidity exhaust fan (12) is installed on the side; the inlet of the uniform air chamber (9) facing the solar heat collector (1) is connected with the outlet of the air blower (8), and the entrance of the air blower (8) is connected with the air supply pipe (7) The outlet duct (5) of the solar heat collector is connected; the top of the drying chamber (11) is connected with the inlet of the induced draft fan (4), and the outlet of the induced draft fan (4) is connected to the The air inlet ducts (17) of the solar heat collectors are connected; a plurality of return air shutters (15) are arranged on the partition (18) between the drying chamber (11) and the uniform air chamber (9). 2. The solar double-circulation drying equipment for agricultural products according to claim 1, characterized in that: an electric heater (14) is installed at the outlet of the circulation fan (10). 3. The solar energy double-circulation agricultural product drying equipment according to claim 1, characterized in that: a check valve for upward conduction is installed in the described air duct (2); Equipped with electric control or manual damper. 4. The solar double-circulation agricultural product drying equipment according to claim 1, characterized in that: a temperature sensor and a humidity sensor are installed in the drying chamber (11), the temperature sensor and the humidity sensor and the blower (8), circulation Fan (10), induced draft fan (4) and dehumidification blower fan (12) are all connected with the control box (13) that is installed in the support (6). 5. The solar double-cycle drying equipment for agricultural products according to claim 4, characterized in that: a drying bracket (16) for placing a drying tray is installed in the drying chamber (11), and the drying bracket for placing the drying tray (16) is equipped with drying dish and automatic weighing device, and the signal output end of this automatic weighing device is connected with described control box (13). 6. The solar double-circulation agricultural product drying equipment according to claim 1, characterized in that: the circulation fan (10) is set in the middle of the partition (18); the return air louvers (15) are set more One, is respectively located at the upper and lower places of the dividing plate (18) between the drying chamber (11) and the even air chamber (9). 7. The solar double-cycle agricultural product drying equipment according to claim 1, characterized in that: the angle between the solar heat collector (1) and the horizontal plane is 30°-60°; the air supply pipe ( 7) It is arranged horizontally; the air induction pipe (2) is arranged vertically with the drying chamber (11). 8. The solar double-cycle drying equipment for agricultural products according to claim 1, characterized in that: the solar collector (1) is composed of an array of three-input and three-out solar collectors connected in series, in parallel or in a mixed manner. The air inlet of the air inlet duct (17) of the device (1) is equipped with an insect-removing net and a dust-proof net device (3). 9. The solar double-circulation drying equipment for agricultural products according to claim 1, characterized in that: the drying chamber (11) and the air uniformity chamber (9) are provided with three layers of heat preservation layers. 10. The solar energy double-circulation drying equipment for agricultural products according to claim 1, characterized in that: the three layers of thermal insulation layer are sequentially composed of cold plate iron sheet, thermal insulation benzene plate and snow board lining from outside to inside.