JPH0754308B2 - Grain dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grain drying device.

[Problems to be Solved by Prior Art and Invention]

Conventionally, when drying a grain, a finishing target moisture value is set in advance, and a dryer is equipped with a grain moisture device to continuously monitor the moisture fluctuation state, and when the set moisture value is reached, drying is completed. .

However, when the hulling work is started after the drying work, the desired moisture content may deviate.

This is a result of, for example, moisture returning due to leaving the dried grains containing a lot of immature grains for a long time, and regardless of whether it is necessary to secure an appropriate moisture value in the actual hulling work, According to the method, there is a problem that the water content is greatly increased depending on the time of hulling and the rice must be re-dried.

[Means for Solving the Problems]

In view of the above, the present invention is configured to stop the drying when the moisture content detected by the moisture detection device 12 that receives moisture from the grain reaches the finishing target moisture value set by the preset means. Providing a means for detecting the mixing ratio and a leaving time setting means for setting the leaving time of the dried grain after the completion of drying until the hulling work, and by the mixing ratio of these immature grains and the leaving time, the finishing target moisture value is set. The grain drying device is configured as a control device for correction.

[Operation and effect of the invention]

During the grain drying operation, the moisture content of the grain is detected and input to the control device, and when the moisture value set by the finishing moisture value setting means is detected, the drying is stopped.

The setting value by the finishing moisture setting means is corrected by a value determined by the leaving time until hulling work and the immature grain mixing ratio, and the controller finishes drying based on the corrected finishing moisture value. Becomes

Therefore, a desired moisture value can be obtained by the time when a predetermined standing time elapses from the completion of drying, and when hulling work, etc.,
It is possible to avoid damage and the like due to excess water.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In the figure, 5 is a grain drying device. A storage chamber 7 is provided in an upper part of a machine wall 6 of the dryer 5, and a drying chamber 8 is provided in a lower part thereof. A valve 9 is provided, and a burner 10 and an operating device 11 are provided on the front wall plate portion of the machine wall 6.
Also, a moisture measuring device 12 is provided, and an exhaust fan 13 is provided on the rear wall plate portion. A grain raising machine 14 is provided at the front of the machine wall 6.

The moisture measuring device 12 is formed in a box shape with the front and rear plates 15, 15, the upper and lower plates 16, 16 and the left and right lateral plates 17, 17, and a part of the supply rolls 1, 1 is projected from the box body. Yes, the protruding supply rolls 1, 1 are mounted in a state of protruding into the front wall plate, and the detection rolls 2, 2 and the like are provided in the box body, and are flowing down in the machine wall 6. Supply the above grain with rolls 1,1
It is configured such that the detection rolls 2 and 2 are fed in and fed to the detection rolls 2 and 2.

Support metals 18 and 19 are provided in the box body, and supply roll shafts 20 and 21 are supported on the upper part. Of these, one end of the supply roll 20 is formed with a spiral groove on the outer peripheral surface to form the supply roll 1. Stick to it. The gear 22 is fixed to the other end, the supply roll 1 is fixed to one end of the supply roll shaft 21, and the gear 23 is fixed to the other end. The spiral groove portions of the supply rolls 1, 1 are brought into a state of being matched with each other at the inner peripheral side contact portions of the supply rolls 1, 1, and the grains flowing down in the machine wall 6 are
It is configured such that one grain is picked up in the spiral groove portions where 1, 1 match each other, transferred as it is, and supplied onto the detection rolls 2 and 2 below the end portion of the rolls 1 and 1.

The detection rolls 24 and 25 are rotatably supported on the lower portions of the supply rolls 1 and 1 by the support metals 18 and 19, the detection roll 2 is fixed to one end of the supply roll shaft 24, and two stages are provided at the other end. The gear 26 is fixed, the detection roll 2 is fixed to one end of the detection roll shaft 25,
The gear 27 is fixed to the other end, and the grains supplied onto the detection rolls 2 and 2 are crushed and crushed between the outer peripheral surface portions of the detection rolls 2 and 2, and the voltage value at the time of this crushing is crushed. It is configured to replace with grain water.

A cleaning roll shaft 28 is rotatably supported by the supporting metals 18 and 19 below the detection rolls 2 and 2, and a cleaning roll 29 is fixed to one end of the cleaning roll shaft 28 and a gear 30 is attached to the other end. Stuck,
A brush is provided on the outer peripheral surface of the cleaning roll 29, and the tip of the brush is configured to be in contact with the outer periphery of the detection rolls 2 and 2. Is a structure for removing.

Reference numeral 31 is a motor. This motor 31 is fixed to the support metal 19, and a gear 32 is fixed to the shaft end of the motor 31.
32, the gears 22, 23, 27, 30 and the two-stage gear 26 are meshed with each other, an inclined plate 33 is provided at the lower part of the cleaning roll 29, and the moisture is crushed by crushing between the detection rolls 2 and 2. The detected grain is returned to the inside of the machine wall 6 through the return port 34 and circulated at the same time as the grain being dried.

The operating device 11 outputs a measurement signal and outputs the measurement signal to the motor 31 of the moisture measuring device 12 as well as various motors 43 for interlocking the rotation of each part of the dryer 5, or a fuel pump 44 for supplying fuel to the burner 10. This operating device 11 has a box shape, and the front panel has a start switch 35, a stop switch 36, a target moisture setting dial 3, a standing time setting dial 4 and a hot air temperature setting dial 37. Etc., and has a control device 38 inside. The control device 38 includes an input circuit 39 for receiving operation input signals of the switches 35, 36 and dials 3, 4, 37, a detection voltage value from the detection rolls 2, 2 of the moisture measuring device 12 and a hot air temperature detection sensor 45. A / D converter 40 for each A / D conversion of the detected value, input circuit 39 for inputting this conversion value, CPU 4 for performing arithmetic logic operation and comparison operation of various input values input from these input circuits 39, 39
1 and an output circuit 42 for outputting various command signals commanded by the CPU 41.

The CPU 41 compares the set voltage value set by the target moisture setting dial 3 as the target moisture setting means with the detection voltage value detected by the moisture measuring device 12, and determines the same grain moisture voltage value as the set voltage value. When it is obtained, the output is stopped and output to each operating part of the dryer 5. Further, this detected water content value is output so as to be displayed on the display unit.

The moisture measuring device 12 detects each grain with the detection rolls 2, 2 and compares the detected voltage value with a reference voltage value preset in the CPU 41, and when it exceeds this, it is determined as a so-called immature grain. .
The immature grain mixture ratio is calculated based on the immature grain judgment grain number with respect to the detected grain number.

The leaving time setting dial 4 can arbitrarily set the time from grain drying to the start of hulling, that is, the leaving time in a tank such as a storage chamber. CPU41 this leaving time setting information, by the immature grain mixing ratio, to determine the so-called moisture return degree, the correction value preset in the combination of leaving time and immature grain mixing ratio, the moisture value of the grain The operation of the dryer 5 is controlled until the value becomes low, that is, the target stop water content is corrected to be low.

The operation of the above example will be described.

By operating the start switch 35 of the operating device 11, the hot air generated from the burner 10 provided on the front wall plate passes through the drying chamber 8 and the grains are dried while flowing down in the drying chamber 8.
The dried grains repeat the circulation in which they are returned to the storage chamber 7 from the grain elevator 14. The grain flowing down in the machine wall 6 is operated by the operating device 11
The motor of the moisture measuring device 12 is rotated by the transmission of the electric signal, and drives each part in the measuring device. A part of the grain from inside the machine wall 6 is fed into the spiral groove of the supply rolls 1 and 1 one by one, and while being sequentially crushed and crushed between the detection rolls 2 and 2, its electrical signal is taken in and the voltage is applied. The value is converted into a moisture value. This moisture value is displayed and output on the display unit,
When the water content reaches the set water content value or less set by the target water content setting dial 3, the controller 38 of the operating device 11 controls the dryer 5 to automatically stop.

Based on the detected water content value, it is determined whether or not it is an immature grain, and the control device 38 inputs the immature grain ratio. On the other hand, the moisture value set by the target moisture setting dial 3 is corrected to a predetermined value lower by the leaving time set by the leaving time setting dial 4. The dryer stop output is performed based on this correction value.

Therefore, it is possible to prevent unintended occurrence of damaged grains and the like without entering the hulling work in the undried state with the passage of standing time.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram, FIG. 2 is a sectional view showing a partially developed moisture measuring device, FIG. 3 is its rear view, and FIG. FIG. 5 is a front view of the operating device, and FIG. In the figure, 1, 1 is a supply roll, 2, 2 is a detection roll, 3 is a target moisture setting dial, 4 is a standing time setting dial, 12 is a moisture measuring device, and 38 is a control device.

Continuation of the front page (56) References Japanese Patent Publication Sho 57-51059 (JP, B2)

Claims (1)

[Claims] Claim: What is claimed is: 1. An immature grain mixture ratio in a device configured to stop drying when the moisture content detected by a moisture detector 12 that receives moisture from a grain reaches a finishing target moisture content set by preset means. A means for detecting and a leaving time setting means for setting the leaving time of the dried grain after the completion of drying until the hulling work are provided, and the finish target moisture value is corrected by the mixing ratio of these immature grains and the leaving time. A grain drying device that constitutes a control device.