JPH02309178A - Cereal drier - Google Patents

Abstract

PURPOSE:To realize optimum drying by switching operations in a single drier by selecting the operations of a hot blast generator and a dehumidified air generator. CONSTITUTION:Selecting means for selecting the operation of a hot blast genera tor or a dehumidified air generator is provided. If cereals to be charged are unhulled, a dehumidifying dry switch is closed to start operations of a dehumidi fier 22 and a fan 11, and to start driving of a circulating system mechanism such as a cereal lifter 5, vertical feed swivels 15, 16, etc. Thus, it is passed in the same state without being exposed to hot blast in downstream passages 9, 9,.. and dehumidified air from the dehumidifier 22 is passed by the suction of the fan 11 in downstream passages 10, 10,.., thereby drying the unhulled cereals having high moisture. In case of drying wheat, when a hot blast dry switch is closed, the combustion amount of a burner 19 is determined according to a set charging amount and temperature information from an atmospheric air temperature sensor, not shown, and drying is started. Thus, an optimum drying is realized.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a grain drying device, which is used for both paddy and wheat drying.

[Prior Art and Problems to be Solved by the Invention] Conventionally, it is known that paddy and wheat are dried by exposing them to hot air from a burner, and the combustion amount of the burner is changed to suit the paddy or wheat. However, since the amount of burner combustion is changed, there is no need to pay much attention to drying the wheat, but when drying paddy there is a limit to the deterioration of quality due to hot air.

In addition, there is a method of drying paddy that uses dehumidified air from a dehumidifier to dry it over a long period of time, which is advantageous in that it does not cause quality deterioration, but wheat drying takes a lot of time. It is disadvantageous.

[Means to solve the problem]

This invention attempts to solve the above-mentioned drawbacks by providing a single drying device, which has vertically long grain flow passages 9, 13.
A part of the drying section 3a is connected to a hot air generator and is configured to allow hot air to pass therethrough, and the other part is a second drying section 3b that is configured to connect to a dehumidified air generator and allow dehumidified air to pass therethrough.
In addition, the grain drying apparatus is provided with selection means for selecting the operation of the hot air generator and the dehumidified air generator.

[Operation and effect of the invention]

For paddy that is susceptible to quality deterioration, by selecting dehumidifying drying, the dehumidifying air generator starts operating and dehumidifying drying can be selected.On the other hand, for wheat that can withstand high-speed drying, hot air generation Hot air drying can be selected by the device, and optimum drying can be achieved by switching the operation in a single drying device.

〔Example〕

An embodiment of this invention will be described based on the drawings.

1 is a machine frame of a grain dryer, and inside this machine frame, a storage tank 2, a drying room 3, and a grain collection room 4 are installed vertically from the top, and a part of the grain collection room 4 is installed outside the machine frame 1. Storage tank 2 for grain collected on the side
A grain lifting machine 5 is installed to raise and return the grain.

In addition, the drying chamber 3 forms grain flow passages 9, 9, . A fan IW 424 includes a dehumidifying air supply chamber 10 communicating with a humid air cylinder 23 and a suction fan 11. Grain flow down passages 13.13... are formed between the grain exhaust chambers 12.12 leading to
and a drying section 3b. In addition, the grain flows down through the flow path 1.
Delivery valve 14゜'14 provided at the bottom of 3, 13...
Due to the constant rotation of...

The grain lifting machine 5 has a structure in which a packet belt is wound therein, and the dry IR material transferred to one side can be scooped up and transferred to the upper part by a lower transfer spiral 15 installed horizontally in the lower part of the grain collection chamber 4. There is. The grains scooped up by the grain lifting machine 5 and thrown at the upper part are guided to the starting end side of the transfer @17 provided with the upper transfer spiral 16. The grains horizontally transferred by the transfer spiral 16 are guided to a rotating diffusion plate 17 disposed at the upper center of the storage tank 2, and are dispersed and dropped into the storage tank 2. 18 is a grain loading hopper connected to the lower part of the grain lifting machine 5.

Figure 3 shows the operation panel on the control box 35, including operation mode selection switches 25, 26, 27°28.29 for tensioning, hot air drying, dehumidifying drying, discharge, and stop, finishing moisture setting switch 30, and tensioning. A quantity setting switch 31 is provided respectively. 32 is a display section for displaying moisture, remaining time, hot air temperature, temperature and humidity of dehumidified air, etc., and 33 is an abnormality display section.

34 is a moisture meter attached to the wall of the grain frying machine 5, which receives measurement signals at predetermined time intervals and can measure the moisture content while sampling the fried grains.

36 and 37 are timer increase/decrease switches that can arbitrarily set the hot air drying operation time and dehumidifying drying operation time, and are used for stop control without using a moisture meter.

The action of the upper side will be explained.

If the grain to be loaded is paddy, press the loading amount setting switch 2.
5 and set it in the specified position, and turn the dehumidifying/drying switch 27 to O.
Do N. The dehumidifier 22 and the fan 11 start operating, and the circulation system mechanisms such as the grain lifting machine 5 and the vertical transfer spiral 15.degree. 16 also start operating. For this reason.

The rice in the storage tank 2 gradually flows down through the flow passages 9, 9, . . . and 10, 10, . Downstream passage 9, 9...
・In the flow path 10, 10..., the dehumidified air from the dehumidifier 22 is passed through by the suction of the fan 11, so the high moisture paddy is dried. It happens.

The dried paddy is collected in the grain collection room 4 and transferred to the lower transfer spiral 1.
The grains are returned to the storage tank 2 through the grain trough 5, the upper transfer spiral 16, etc., and are subjected to a refining action.

After drying for a long time in this manner, when the moisture value set by the finishing moisture setting switch 30 is reached, drying is automatically stopped.

Moreover, in the case of drying wheat, the hot air drying switch 2G is turned on. The combustion amount of the burner 19, ie, the hot air temperature necessary for drying the wheat, is determined based on the setting amount of wheat by the amount setting switch 31 and the temperature information from the outside air temperature sensor (not shown), and the drying is started. At this time, the flow passages 9, 9
The hot air acts on the wheat flowing down and dries it, and since the dehumidifier 22 is not operated in the downstream passage 10°10..., the wheat reaches the grain collecting room 4 without any influence. Grain collection room 4
The wheat is returned to the storage tank 2 and subjected to a tempering action in the same manner as the case of the paddy described above, and when a predetermined moisture value is reached, drying is stopped.

In this way, for paddy that is likely to deteriorate in quality, by selecting dehumidification drying, the operation of the dehumidifier 22 is started,
On the other hand, for wheat that can withstand high-speed drying, hot air drying using the burner 19 can be selected, and optimum drying can be achieved in a single drying device by switching the operation.

In this embodiment, hot air drying or dehumidifying drying is selected depending on the type of grain using the mode switches 26 and 27, but the mode may be automatically switched based on the setting operation of the grain type setting switch 38.

Further, drying may be performed in combination of hot air drying mode and dehumidifying drying mode. For example, the timer increase/decrease switch 36
．． 37 and the mode switches 26 and 27, various drying operations such as initial hot air drying, drying pause, and late dehumidification drying can be performed while setting timers for each period.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front sectional view, FIG. 2 is a side view, and FIG. 3 is a front view of the operation panel. In the figure, 2 is a storage tank, 3a is a first drying section, 3b is a second drying section, 20 is a burner, 22 is a dehumidifier, 26 is a hot air drying mode switch, and 27 is a dehumidifying/drying mode switch.

Claims (1)

[Claims] (1) Parts of the vertically long grain flow passages 9 and 13 are connected to a hot air generator to form the first drying section 3a configured to allow hot air to pass through, and the other parts are connected to a dehumidifying air generator to dehumidify. A grain drying device comprising a second drying section 3b configured to allow air to pass therethrough, and a selection means for selecting operation of the hot air generator and the dehumidified air generator.