RU2463537C1 - Autonomous device for drying of vegetation raw materials - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: autonomous device for drying of vegetation raw materials comprises a furnace 1, an electronic control unit 5, a drying chamber 13 with a tray 14 arranged for it for raw materials, an air blower 9 with air ducts, a Stirling engine 2, comprising a shaft 7, hot and cold cavities. The hot cavity is connected with the furnace 1, and the shaft 7 is mechanically connected with the generator 6, electrically connected via the electronic control unit 5 with the electric motor 8 of the air blower 9 drive, which by air ducts 10 and 12 via air heating pipes 11 arranged in the furnace is connected with the drying chamber 13, the tray 14 of which is connected to a vibrator 15, joined electrically via the electronic control unit 5 with the generator 6. The drying chamber 13 and the furnace 1 are equipped with temperature sensors 16 and 17 joined with the electronic control unit 5, besides, between the furnace 1 and the hot cavity of the Stirling engine 2 there is a gate 3 with a drive 4, connected via the electronic control unit 5 with the generator 6. The generator 6 excitation system is connected with the electronic control unit 5.

EFFECT: simplification of design and improved quality of drying.

2 cl, 1 dwg

Description

The invention relates to equipment for drying vegetable raw materials and can be used in agricultural production.

A known installation for drying highly moist heat-sensitive materials containing a drying chamber, trays for placing the product, a device for supplying and removing a drying agent, heaters and fans (US Pat. RU 2031339, IPC F26B 20/01).

A disadvantage of the known installation is the impossibility of autonomous operation.

A stand-alone device for drying high-moisture plant materials is also known, containing a drying chamber, a tray for placing the product, pipelines for supplying and removing the drying agent and a fan (Pat. RU 2381429, IPC F26B 9/06).

A disadvantage of the known installation is the complexity of its design and insufficiently high quality of drying.

The objective of the invention is to simplify the design and improve the quality of drying.

The technical result is achieved by the fact that an autonomous device for drying vegetable raw materials containing a furnace, an electronic control unit, a drying chamber with a feed tray placed in it, a blower with air ducts, is equipped with a Stirling engine, including a shaft, hot and cold cavities, and hot the cavity is connected to the furnace, and the shaft is mechanically connected to the generator, electrically connected through the electronic control unit to the electric motor of the blower drive, which through the ducts located in the furnace The air heating loss is connected to a drying chamber, the tray of which is connected to a vibrator, while the vibrator drive is electrically connected to the generator through an electronic control unit, and the drying chamber and furnace are equipped with temperature sensors connected to the electronic control unit, and a furnace is installed between the furnace and the hot cavity of the Stirling engine a damper with an actuator connected through an electronic control unit to the generator, and the generator excitation system is connected to the electronic control unit.

Figure 1 shows a diagram of a stand-alone device for drying plant materials.

The device comprises a furnace 1, a Stirling engine 2, a hot cavity (hot and cold cavities of the Stirling engine are not shown in FIG. 1) connected to the furnace 1. Between the furnace 1 and the Stirling engine 2 there is a shutter 3 connected by an actuator 4 through an electronic control unit 5 s generator 6, mechanically connected to the shaft 7 of the Stirling engine 2. Generator 6 is electrically connected through an electronic control unit 5 to the electric motor 8 of the blower drive 9. The blower 9 is connected by the duct 10 to the air heating pipes 11 located internally and furnaces 1, and the flame tubes 11 with air ducts 12 - with a drying chamber 13. The drying chamber 13 is provided with a tray 14 for vegetable raw materials, and the tray 14 is connected to a vibrator 15, which is electrically connected to a generator 6 through an electronic control unit 5. In the drying chamber 13 a temperature sensor 16 is located, and a temperature sensor 17 is located in the furnace 1, while the temperature sensors 16 and 17 are connected to the electronic control unit 5. The generator excitation system (the generator excitation system is not shown in FIG. 1) is connected to the electronic control unit laziness 5.

Stand-alone device for drying plant materials works as follows. In the furnace 1, the fuel available at the place of collection of plant materials is ignited. A temperature difference occurs between the hot and cold cavities of the Stirling 2 engine. The shaft 7 of the Stirling engine 2 starts to rotate and drives the rotor of the generator 6. The energy generated by the generator 6 is transmitted through the electronic control unit to the electric motor 8 of the blower drive 9, which through the duct 10, the air heating pipe 11 and the duct 12 supplies the air heated in the furnace 1 to the dryer chamber 13. Passing through the tray 14 to accommodate raw materials, hot air heats the vegetable raw materials and carries away the released moisture. The vibrator 15 periodically shakes the tray 14 with the raw materials according to the specified program from the control unit 5. The control unit 5, receiving data on the temperature of the tray 14 from the temperature sensor 16, changes the operating mode of the electric motor 8 of the blower drive 9, while the volume of hot air supplied to the drying chamber changes 13. The temperature difference between its hot and cold cavities required to obtain the required power of the Stirling engine 2 is determined by the position of the damper 3, which regulates the heating of the hot cavity of the Stirling engine 2. Code 4 of the flap 3 receives signals from the control unit 5 depending on the temperature of the furnace 1, determined by the temperature sensor 17, and the operating mode of the generator 6.

The combination of a Stirling furnace and an engine with an automatic electronic control system for drying modes will ensure high quality drying of plant materials directly at the place of collection using any solid fuel available at the place of collection of plant materials. In addition, the presence of a generator will allow illuminating the place of operation of the dryer and provide the possibility of working serving the dryer in the dark, so that the daily productivity of the device will be maximum.

A device for drying plant materials can be used in agricultural and forestry industries, as well as in other industries. The autonomy of the device will allow you to use it directly at the place of collection of raw materials, significantly reducing the cost of transporting raw materials.

Claims (2)

1. Autonomous device for drying vegetable raw materials, containing a furnace, an electronic control unit, a drying chamber with a tray for raw materials, an air blower with air ducts, characterized in that the device is equipped with a Stirling engine, including a shaft, hot and cold cavities, the hot cavity is connected to the furnace, and the shaft is mechanically connected to the generator, electrically connected through the electronic control unit to the electric motor of the blower drive, which air ducts through the heating pipes located in the furnace Eva air is connected to a drying chamber, the tray of which is connected to a vibrator electrically connected through an electronic control unit to a generator, and the drying chamber and furnace are equipped with temperature sensors connected to the electronic control unit, and a shutter with an actuator connected between the furnace and the hot cavity of the Stirling engine is connected through an electronic control unit with a generator. 2. A stand-alone device for drying plant materials according to claim 1, characterized in that the generator excitation system is connected to an electronic control unit.