JPH0712870Y2 - Moisture detection controller in grain dryer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is composed of a grain-filling tank and a drying tank. Grains that are continuously flowed down from the loading tank to the drying tank are dried by ventilation. The present invention relates to a water content detection control device in a grain dryer that measures the water content of grains that are put into a drying tank from a holding tank in a drying facility.

[Prior Art] Conventionally, in a grain drying facility, a structure in which a full sensor is provided at the upper part of a dryer to automatically stop the grain loading when the grain is fully loaded For example, it is described in JP-B-61-40910 and is publicly known.

[Problems to be solved by the invention] By the way, in a grain dryer of a grain drying facility in which a grain placed in a drying tank is continuously flowed down from a loading tank and dried by ventilation, the grain before being placed in the drying tank is The water content is measured, and the water content of the grain sent out from the drying tank is measured at predetermined time intervals to control the drying. The water content of the grain before being put into the drying tank is measured at a predetermined time interval, and the sample for measuring the water content is from the flowing grain that is put into the drying tank from the feeding tank. Extracting scattered grains.

On the other hand, the drying tank is provided with an upper limit sensor so that the drying tank does not overflow, but since the moisture measurement made at the above-mentioned predetermined time interval is performed regardless of grain stake control, During the suspension of the grain filling when the grain is full in the drying tank, the grain before the drying tank is not extracted as a sample and the water content cannot be measured. For this reason, it has been pointed out that the drying control is hindered and the accurate drying control is not performed.

In view of the above problems, the present invention provides a method for measuring the moisture content of a grain at a predetermined time interval even when the grain in the drying tank is full and the grain filling is suspended. , Moisture detection in a grain dryer that allows accurate and accurate drying control by temporarily restarting grain loading in the drying bath to ensure that the moisture content of the grain before loading in the drying bath is measured An object is to provide a control device.

[Means for Solving the Problems] In order to achieve the above object, the present invention is configured as follows.

In other words, in a grain drying facility that consists of a grain feed tank and a drying tank, and the grain that has been loaded from the feed tank to the drying tank is continuously flowed down and dried by ventilation, the grain that is loaded from the feed tank to the drying tank A moisture meter for detecting the moisture content of the grain being fed at a predetermined time interval is provided in the transportation route of the above, and the above-mentioned drying tank has a specified upper limit for the height of the grain deposited from the feeding tank to the drying tank. The first upper limit sensor that detects that the upper limit is reached and the second upper limit sensor that detects an upper limit that is slightly higher than the specified upper limit are provided, and when the grain reaches the height of the first upper limit sensor, the grain is automatically stuck. The grain height in the drying tank is detected by the second upper limit sensor during the moisture detection of the grain being infused by the moisture meter at the time of interruption of the grain infiltration, and the infiltration control is performed. Configured as It is obtained by the moisture detection control device in a grain dryer according to claim.

[Operation] Since the device according to the present invention is configured as described above, when the grain reaches the first upper limit sensor when the grain is loaded from the grain loading tank to the drying tank, the full load is reached. As a state of quantity, the stakeout is interrupted. On the other hand, when the moisture content of the grain before being filled in the drying tank is measured at a predetermined time interval when the grain is fully filled in the drying tank, the first upper limit is set. The sensor is disabled and the grain is temporarily stuck until the grain reaches the second upper limit sensor. For this reason, the grains scattered from the grains before being put into the drying tank are extracted as a sample, and the moisture content thereof is reliably measured.

[Example] An example will be described with reference to the drawings.

In FIG. 1, 1 is a grain drying tank, and the drying tank 1
The grain feed tank 2 to feed conveyor 3, elevator 4
It is configured such that the dried grain is put in by means of the dry conveyor 1.
The grain is continuously carried out in the drying tank 1, and is dried by ventilation.

A first upper limit sensor 6 is provided on the upper portion of the drying tank 1, and a second upper limit sensor 7 is provided at a position slightly higher than the first upper limit sensor 6. The first upper limit sensor 6 and the second upper limit sensor 7 are located at the upper limit where the drying tank 1 does not overflow. In the lower part of the elevator 4, there is provided a moisture meter during the swelling, that is, an inlet moisture meter 8 for measuring the moisture of the grain before being squeezed into the drying tank 1.
The inlet moisture meter 8 measures the moisture by extracting, as a sample, the grains scattered from the grain being vertically conveyed by the elevator 4 at a predetermined time interval. Although not shown, a moisture meter for measuring the moisture of the grain sent from the drying tank 1, that is, an outlet moisture meter is provided.

In the grain drying facility configured as described above, the grain is loaded into the drying tank 1 from the feeding tank 2, but when the grain reaches the height of the first upper limit sensor 6 in the drying tank 1,
The stakeout is automatically interrupted. On the other hand, during the drying operation, the moisture content of the grain is measured by the inlet moisture meter 8 and the outlet moisture meter at predetermined time intervals. When the measurement is performed, the first upper limit sensor 6 is disabled. Next to
Since the second upper limit sensor 7 becomes effective, even if the drying tank 1 is fully loaded with grains, the grain loading is temporarily restarted, and the inlet moisture meter 8 stores the sample in the meantime. Is extracted and the moisture content of the grain before being put into the drying tank 1 is reliably measured, and the drying control is appropriately performed. In addition,
When the grain reaches the second upper limit sensor 8, the filling of the grain into the drying tank 1 is stopped.

The above operation is shown as a flowchart in FIG.

[Effects of the Invention] As described above, the present invention comprises a grain drying tank and a drying tank, and in a grain drying facility for continuously flowing down the grain stuck in the drying tank from the feeding tank to dry by ventilation. Grain is loaded from the stake tank into the drying tank A moisture meter that detects the moisture content of the grain being squeezed at a predetermined time interval is provided in the grain transportation route. A first upper limit sensor for detecting that the pile height of the grain stuck in the container has reached a specified upper limit, and a second upper limit sensor for detecting an upper limit slightly higher than the specified upper limit,
When the grain reaches the height of the first upper limit sensor, the stake of the grain is automatically interrupted, and the moisture is detected by the second upper limit sensor while the moisture of the grain is being detected by the moisture meter when the swelling of the grain is interrupted. Since it is configured to detect the pile height of the grain in the tank and perform the stake-in control, even if the grain stake is interrupted when the grain in the drying tank is full, the stake-in control is performed at a predetermined time interval. When the moisture content of the grain is measured,
By temporarily resuming the grain loading into the drying tank, the moisture content of the grain before being loaded into the drying chamber can be reliably measured, and an accurate drying control can be achieved at all times.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a grain drying facility equipped with the device according to the present invention, and FIG. 2 is a flow chart showing the operation of the main part. 1 ... drying tank, 2 ... tightening tank, 4 ... elevator, 6 ...
… First upper limit sensor, 7 …… Second upper limit sensor, 8 ……
Inlet moisture meter

Claims (1)

[Scope of utility model registration request] 1. A grain drying facility comprising a grain feed tank and a drying tank, wherein the grain loaded from the feed tank to the drying tank is continuously flowed down and dried by ventilation. A moisture meter for detecting the moisture content of the grain being fed at a predetermined time interval is provided in the transportation route of the grain being fed, and the drying height of the grain loaded from the feeding tank to the drying bath is provided in the drying tank. Is provided with a first upper limit sensor that detects that the upper limit has been reached, and a second upper limit sensor that detects an upper limit that is slightly higher than the specified upper limit, and when the grain reaches the height of the first upper limit sensor, the grain In addition to automatically suspending the stake, the second upper limit sensor detects the accumulated height of the grain in the drying tank while the moisture in the grain is being detected by the moisture meter when the grain is interrupted. Configured to control Moisture detection control device in a grain dryer, wherein and.