JPS629837B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in grain drying and preparation equipment.

The present invention connects a rice husk combustion device equipped with a smoke tube boiler to a grain dryer and a grain preparation device through a unique hot water circulation path, purifies the exhaust gas of the combustion device, and supplies hot air to the dryer. By communicating through roads, rice husks with little utility value can be efficiently burned and converted into thermal energy, achieving effective use. At the same time, the use of oil, which is an important resource, can be significantly reduced and fuel consumption can be reduced. The purpose of the present invention is to develop and provide an apparatus that can reduce production costs, maintain good grain drying ability, and smoothly mass-produce and store high-quality dried grains.

To explain the present invention with reference to an embodiment, a drying chamber 3 is provided with a supply port 1 at the top and a discharge port 2 at the bottom, and ventilation walls 4, 4 are installed on both sides of the drying chamber 3, respectively. In the vicinity of the grain dryer 9, each of which has an air exhaust part 6 connected to the exhaust fan 5 and an air supply part 8 with a heat exchanger 7 installed on the outside thereof, there are a plurality of grain storage rooms 10 and an air supply. A grain preparation device 12 consisting of chambers 11 is provided. 13 is rice husk combustion chamber 1
It is a rice husk combustion device consisting of a boiler 15 and a boiler 15.
The rice husks fed into the supply hopper 16 fall, accumulate on the internal combustion shelf 17, and are ignited, and are combusted by the air flowing in from the front air supply ports 18, and the combustion gas is transferred to the boiler. The boiler water inside the vessel is heated by passing through a large number of smoke pipes 19...
The ash flowing out from the air outlet 1 into the exhaust passage 22 and falling to the bottom of the room is removed by a discharge conveyor 23 to the outside of the machine.

The hot water supply port 24 of the heat exchanger 7 provided in the air supply section 8 of the grain dryer 9 and the rice husk combustion device 13
A water supply pipe 25 of a boiler 15 installed in the boiler 15 is connected to the water supply pipe 25, and a steam separator 26, a control valve 27, and a switching valve 28 are interposed in the middle of the pipe 25. Further, the hot water outlet 29 of the heat exchanger 7 is connected to the hot water supply pipe 32 of the heat exchanger 31 installed in the air passage 30 communicating with the air supply chamber 11 of the preparation device 12, and the hot water outlet of the heat exchanger 31 is 33 is connected to the hot water supply pipe 34 of the boiler 15 to form a hot water circulation path 35, and a hot water pump 43 is interposed in the circulation path 35. 36 and 37 are branch pipes each having a switching valve interposed therein. Further, the exhaust passage 22 connected to the gas outlet 21 of the rice husk combustion device 13 is connected to a cyclone device 39 via an exhaust fan 38, and the branch part of the exhaust pipe 40 of the cyclone device 39 and the grain drying The air supply part 8 of the machine 9 is connected by the air pipe 41, and each of these parts 22, 38, 3
9, 40, 41 are connected in a related manner to form a hot air flow path 4.
It is formed in 2. 44 is a blower, and 45 is a switching valve for the hot water supply pipe 32.

With the above-mentioned configuration, the rice husks put into the supply hopper 16 of the rice husk combustion device 13 flow down to the internal combustion shelf 17 and are burned, and the combustion gas passes through the smoke pipes 19 of the boiler 15 and enters the inside of the vessel. Boiler water is heated to make hot water, and this hot water is passed through steam separator 2.
6, the boiler water flows into the heat exchanger 7 via the hot water supply pipe 25, and the heat is radiated in the vessel 7.The boiler water flows into the heat exchanger 31 via the hot water supply pipe 32, and the heat is reradiated in the vessel 31. The heated boiler water is forced back to the boiler 15 by the hot water pump 43, reheated, and circulated through the hot water circulation path 35. Further, the exhaust hot air flowing out from the smoke exhaust chamber 20 of the combustion device 13 is transferred to the cyclone device 3.
9, a part of it is discharged from the air exhaust pipe 40 to the outside of the machine, and most of it is blown to the air supply section 8 of the grain dryer 9 via the air pipe 41. Therefore, in the grain dryer 9, the hot air from both parts 7, 41 of the air supply section 8 is sucked by the rotation of each exhaust fan 5, and the hot air is used to remove the grains formed in the drying chamber 3. Each grain is dried after passing through the layers, and the dried grains are taken out from the discharge port 2 and carried into each grain storage chamber 10 of the grain preparation device 12 to be stored.

Next, the grain preparation device 12 dries the grains in each storage chamber 10 as necessary, but in this case, when the valve of the branch pipe 37 is closed and the switching valve 45 is opened, the hot water supply pipe 32 is opened. The flowing hot water flows into the heat exchanger 31 of the air passage 30, and the boiler water re-radiated by the heat exchanger 31 is sent to the boiler 1 by the hot water pump 43.
5 to be pumped and refluxed. The hot air generated in the air passage 30 by the rotation of the blower 44 is sent under pressure to each grain storage room 10 via the air supply chamber 11, and the hot air passes through the grain layer formed in each storage room. Dry each kernel.

In this way, the grain drying and preparation device of the present invention heats boiler water while the rice husk is incinerated and the combustion gas passes through the smoke pipe of the boiler, and this boiler water is used to supply air to the grain dryer via the hot water circulation path. Hot air for drying is generated by supplying hot water to the heat exchanger installed in the section and the heat exchanger installed in the air path of the grain preparation device, and the hot air is purified and supplied to the air supply section of the grain dryer from the exhaust gas from the rice husk combustion device. Since grains are dried by drying, a large amount of rice husks, which have relatively little utility value, are efficiently combusted and converted into effective heat energy, increasing its utilization and greatly reducing the use of oil, an important resource. At the same time, it has the effect of reducing fuel consumption, lowering production costs, and maintaining good grain drying ability to continuously and smoothly mass-produce and store high-quality dried grains.

[Brief explanation of the drawing]

The drawing is a partially cutaway side view of the grain drying and preparation apparatus of the present invention. 1... Supply port, 2... Discharge port, 3... Drying room,
4...Ventilation wall, 5...Exhaust fan, 6...Exhaust section, 7
... Heat exchanger, 8 ... Air supply section, 9 ... Grain dryer, 10 ... Grain storage room, 11 ... Air supply room, 12
... Grain preparation device, 13 ... Rice husk combustion device, 14
... Rice husk combustion chamber, 15 ... Boiler, 16 ... Supply hopper, 17 ... Combustion shelf, 18 ... Air supply port,
19... Smoke pipe, 20... Smoke exhaust chamber, 21... Gas discharge port, 22... Air exhaust path, 23... Discharge conveyor, 24... Hot water supply port, 25... Water supply pipe, 26...
Steam/water separator, 27... control valve, 28... switching valve,
29... Water outlet, 30... Air path, 31... Heat exchanger, 32... Hot water supply pipe, 33... Water outlet, 34...
Hot water supply pipe, 35... Hot water circulation path, 36... Branch pipe for branching, 37... Branch pipe for branching, 38... Exhaust fan, 39
... Cyclone device, 40 ... Wind exhaust pipe, 41 ...
Blower pipe, 42...Hot air channel, 43...Hot water pump, 44...Blower, 45...Switching valve.

Claims (1)

[Scope of Claims] 1. A drying room formed between ventilation walls consisting of a porous wall or a wall with a ventilation window that prevents grain from leaking, with one of the ventilation walls serving as a ventilation section and the other as a ventilation section. A grain preparation device consisting of a grain storage room and an air supply room is installed near the grain dryer, and the hot water supply port of the heat exchanger installed in the air supply section of the dryer is connected to the boiler installed in the rice husk combustion device. A hot water pipe is connected to the hot water pipe, and the hot water outlet of the heat exchanger is connected to the hot water pipe of a heat exchanger installed in the air passage of the air supply room of the preparation device, and the hot water outlet of the heat exchanger is connected to the hot water pipe of the boiler. What is claimed is: 1. A grain drying and preparation apparatus, characterized in that a hot water circulation path is formed by connecting to a hot water circulation path, and a hot water pump is interposed in the circulation path. 2. The grain drying and preparation device according to claim 1, wherein the combustion gas outlet of the rice husk combustion device and the air supply section of the dryer are connected through a hot air flow path.