JPS60134184A - Indicator for water content in cereal grain drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The moisture content of the grains being dried is measured at fixed time intervals using an automatic moisture meter, and the moisture content value calculated each time based on the measurement data is displayed on a digital display. With,
There is a grain dryer that automatically stops the drying operation if the value falls below the target finished moisture content a predetermined number of times in a row.

In this way, the automatic moisture meter does not immediately stop drying when the calculated moisture content falls below the target finished moisture content even once, but continues drying until it falls below the target finished moisture content a predetermined number of times in a row. This is to prevent the drying operation from being stopped by mistake in the event that a measurement is made of contaminants such as dry shiitake or straw pieces. Even if the value is lower than the finished moisture content, it will be displayed on the display, so if a value lower than the finished moisture content is displayed, the operator will mistake it for a malfunction in the automatic stop mechanism, and this will be displayed a predetermined number of times in a row and the drying will automatically stop. There were times when I manually stopped the operation without waiting for the driver to do so.

The present invention aims to solve the 4i problem caused by such worker's misunderstanding.
The purpose is to prevent m cropping, and the moisture content is 24'.
J: Even if the f value is lower than the target finish moisture content, until the number of consecutive F rotations reaches the predetermined number, that is, dry *
In the state before Ja is automatically stopped, the calculation step 1
It is characterized by adding 1 to 1 to display a value higher than the finished moisture content of the mark.

Next, the present invention will be explained based on embodiments shown in the drawings.

Reference numeral 1 designates a storage chamber for grains, to the bottom of which a drying chamber 2 made of a perforated plate is connected, and at the lower end discharge port of the drying chamber 2, a low-resolution valve 3 is installed. 4 is the grain collection room at the bottom of the aircraft, and 2 is in the center.
Lay the grain helix 5 horizontally. The delivery end of the grain collection helix 5 is connected to the lower intake port of the grain hoist 6, and the upper takeout port thereof is connected to one end of the hull helix 7 horizontally suspended on the ceiling of the storage chamber 1.

The other end of the hull helix 7 opens above a diffuser plate 8 that hangs down from the center of the ceiling of the storage chamber l. 9 is a grain charging hopper communicating with the lower intake port of the R grain plate 6.

Then, burners 10 installed on the front of the machine are installed in the left and right drying chambers 2.
．． The hot air chamber 11 between the drying chamber 2.
A suction/exhaust fan 13 installed on the back side of the dryer is visible in the outside ventilation chamber 12 of the dryer.

The hot air from the burner 10 blown into the hot air chamber 11 is passed through the left and right drying chambers 2.2, and the exhaust air is discharged from the exhaust chamber 12 through the suction exhaust fan 13 to the outside of the machine.

As a result, the grains in the drying chamber 2 that have flowed down from the storage chamber 1 are dried, and the dried grains pass through the rotorino lubricant 3 and fall into the grain collecting room 4, and are further moved to a grain collecting helix 5, a grain raising machine 6, It returns to the storage chamber l via the hull helix 7 and the diffuser plate 8.

In this way, the grains are dried while circulating inside the machine.In the present invention, an automatic moisture meter 14 is installed on the plate wall of the storage chamber 1, and the grains are dried at a constant interval of 49J. Measure the moisture content of.

15 is the average moisture content a output stage, and the automatic moisture content 3 is on the input side.
114 is connected, and the automatic moisture J114 n-times 1-1 measurement circle chi1〆jMsn movement 1--equity rank sn is determined according to the following formula.

Msn=a %jsn-1+ (,1-,,a)
l'vlSn and the final moisture content of the target;
Then, the finished moisture content signal jvl according to this set moisture content
A comparison judgment circuit 17 compares the finished moisture content ΔIll determination means 16 which outputs e with the average moisture content −i and q output 15.
Connect to.

The comparison/judgment circuit 17 compares the water content Msn of the balance beam and the water content Me of the balance beam, and generates an output signal according to the comparison result.
do.

On the output side of the comparison/judgment circuit 17, a display determining means 18 is provided.
Connect. This display determination-F stage 18 uses the output signal of the comparison/judgment circuit 17 as an input signal, and when the qt average moisture content Msn is -11 times around the finished moisture content, it outputs a display signal that should display a value equal to the average moisture content. Output and also average moisture content Ms
If n is less than the finished moisture content Me and the number of times n does not reach a predetermined number of consecutive times N, a display signal is output to display II' (which is larger than the finished moisture content).

A digital display 19 is connected to the output side of the display determining means 18 and digitally displays the moisture content in accordance with the display signal of the display value determining means 18.

First, the number N of times the average moisture content must be lower than the finished moisture content before the dryer is automatically stopped is determined. For example, set N=3. Then, when the dryer is started, the automatic moisture meter goes through a routine that measures the outside temperature and checks whether the sensor is abnormal according to flowchart 1 in Figure 4, and then runs periodically until T = 30. and measure the moisture content of the grains during drying.

Then, the average moisture content Msn is calculated from the All data of the automatic moisture meter 14 according to the above-mentioned equation q, and the comparison judgment circuit 17 compares the two with the finished moisture content Me.

As a result, if the average moisture content Msn is larger than the finished moisture content Me, drying is continued as it is.

Next, if the average moisture content Msn is equal to or smaller than the finished moisture content Me, count the number of times, and if the number does not reach the set N times as described above, set a certain value to the average moisture content. In addition, this displays a value slightly larger than the water content = HM e, for example, the value of Me+O,l.

Further, when the number of times that the average moisture content Msn falls below the finished slag content Me reaches N times in a row, the finished moisture content Me is displayed on the display 19 and the drying operation of the dryer is immediately stopped.

In this way, in the present invention, the moisture content of the grains being dried is measured at fixed time intervals using an automatic moisture meter, and the moisture content value calculated each time based on the measurement data is displayed on the digital display. , whose value is I for a predetermined number of consecutive times
"Target performance" - In a grain dryer that stops drying when the moisture content falls below the target, even if the average moisture content falls below the target finished moisture content, the number of times the average moisture content falls below reaches a predetermined number of times N. Since the value displayed is higher than the value of the finished moisture content i of °, 1lrj, the operator does not have to manually stop the dryer in a hurry from that display, and the drying continues reliably until it stops automatically. This produces the effect that drying can be performed correctly to a predetermined finished moisture content.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of a grain dryer according to an embodiment of the present invention, and FIG.
The figure is a cross-sectional plan view taken along line II'L-II, FIG. 3 is a functional block diagram thereof, and FIG. 4 is a flowchart 1 showing the control procedure. Patent applicant: Iseki Agricultural Machinery Co., Ltd. Representative: Hakube Maki (and 2 others) Figure 1 Figure 2

Claims (1)

[Scope of Claims] An automatic moisture meter that measures the moisture content of grains at regular time intervals; 1) The measurement output of the dynamic moisture meter is used as a human signal, and the average moisture content is calculated by moving the signal values. Average moisture content 9 output means. [1 step of finishing moisture content setting which sets a finishing moisture content of one standard and outputs a finishing moisture content signal according to the set moisture content, and the average moisture content output by the average moisture content calculating means.] No., !-+ii> Finished water content -1/: Comparing means for comparing Ida 1 with the signal and producing an output signal according to the comparison result, and using the output signal of the comparing means as an input signal, the average water content is determined. If the finished moisture content is 11!J higher than the finished moisture content, a display signal that should display a value equal to the average moisture content is output, and if the average moisture content is lower than the finished moisture content and the number of consecutive times If the predetermined number of times is not reached, the display value determination means outputs a display signal that should display a value larger than the finished moisture content, and the display device digitally displays the moisture content in accordance with the display signal of the display value determination means. Moisture content display device in grain dryer.