JPH07239182A - Device for sensing amount of charged grain for grain drier - Google Patents

Abstract

PURPOSE:To set a precise drying air temperature corresponding to the amount of charged grains by a method wherein time difference in ON-operation between a front pressure sensor and a rear pressure sensor, and if the time difference is a predetermined or more, the grain holding capacity which is sensed by a charge amount sensor is corrected. CONSTITUTION:When grains to be charged are fed into a charge hopper of a grain lifting machine 25, the grains are carried to the upper section by a bucket conveyor and transferred through a transfer trough 5 onto a dispersion table 24 through a transfer spiral so that the grains are dispersed and fed into a grain storage room 7. When a front pressure sensor 10a is ON, the charged grains is sensed high on the side of a front side machine wall 4 and a timer starts, so that whether or not a rear pressure sensor 10b has been turned On is sensed. In the case of ON, operation time difference of the timer is calculated and when the calculated value is equal to a set predetermined time or more, grain holding capacity following the sensing of a holding capacity sensor 8a is corrected to the (-) side by a predetermined amount. And when the operation time difference is within the set time, the grain holding capacity sensed by the sensor 8a is used as a condition for setting hot air temperature, whereby hot air temperature is set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain amount detecting device for a grain dryer.

[0002]

2. Description of the Related Art Conventionally, at the time of a grain loading operation in the preceding stage of a drying operation, the amount of grain loaded into a storage chamber is detected by, for example, appropriately detecting the inside of the storage chamber. O at the position due to the pressure of the swelling grain from the bottom
This is performed by a configuration in which a plurality of N-OFF swelling amount sensors are provided in the vertical direction at a predetermined interval, and the swelling grain amount is detected by the ON operation of each of these swelling amount sensors. (For example, Japanese Unexamined Patent Publication No. Hei 5-231771) The detected amount of spilled grains is one condition item for setting the drying air temperature.

As described above, the amount of grain to be infused is detected by turning on each of the infiltration amount sensors. When the amount of grain moisture to be infused varies, when the grain moisture is high and when it is low. , And due to the mixed state of straw waste, grain, etc., the grains to be loaded into the storage chamber may not be evenly loaded into the storage chamber, and therefore the accurate amount of the loaded grain cannot be detected. There is
There was a case where it was not possible to accurately set the temperature of the drying air corresponding to the amount of grains to be stuck, but this is to be solved.

[0004]

SUMMARY OF THE INVENTION The present invention is provided for drying with dry air while feeding out and circulating grains from an upper grain storage chamber 7 to a lower grain drying chamber 8. The storage chamber 7 is turned ON-OF by the sewn grain in order from the bottom.
A plurality of swelling-amount sensors 8a, 8a, ... which are F are provided at predetermined intervals in the vertical direction to detect the amount of the spilled grain, and at the predetermined vertical positions on the front and rear sides, the swelling grain is turned ON-O.
In a grain dryer provided with front / rear pressure sensors 10a, 10b for FF, a time difference between ON operations of the front / rear pressure sensors 10a, 10b is calculated, and the calculated operation time difference is equal to or longer than a predetermined time. The respective amount sensors 8a, 8a,
The control device 37 that corrects and controls the amount of stuck grain detected by.
The configuration of a stuck grain amount detecting device of a grain dryer, characterized by being provided with.

[0005]

[Operation and effect of the invention] At the time of grain loading operation, the storage chamber 7
The grain to be loaded inside is provided with front and rear pressure sensors 1 provided at both front and rear positions in the vicinity of the position of the minimum grain loaded in the storage chamber 7.
0a and 10b are turned on, and the time difference in which the front and rear pressure sensors 10a and 10b are turned on is detected. When the detected operating time difference is equal to or longer than a preset predetermined time, it is determined that the grains stuck in the storage chamber 7 are not evenly diffused in the storage chamber 7, and When the time is less than the predetermined time, it is determined that the diffusion is even.

When the diffusion state is not evenly distributed,
The control device 37 is turned on in the storage chamber 7, for example, on the front side machine wall side, on the left side machine wall side, and the tension amount sensors 8a, 8a, ... The detection output of the position of the stake amount sensor 8a at the uppermost position is obtained to detect the amount of swelling grains, and the detected amount of swelling is corrected by a predetermined amount set in advance. This corrected amount of grain is used as one condition item such as the setting of the drying air temperature.

As described above, the diffusion state of the grains to be loaded into the storage chamber 7 is detected at an early time after the start of the loading operation by the time difference between the ON operations of the front and rear pressure sensors 10a and 10b, By this detection, the amount sensor 8a,
An accurate amount of swelling is detected by correcting the amount of swelling detected by 8a, ....

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example is a circulation type grain dryer 1 for drying grains.
It shows a state in which a moisture sensor 2 for detecting moisture in the grain, a burner 3 for generating hot air, etc. are mounted. The dryer 1 has a rectangular shape that is long in the front-rear direction, and the upper part of the machine wall 4 is
A transfer trough 5 and a ceiling plate 6 in which a transfer spiral is rotatably installed are provided, and a grain storage chamber 7 for storing grains is formed below the ceiling plate 6.

A plurality of viewing windows 4a for visually observing the amount of grains to be loaded into the storage chamber 7 are provided at a predetermined interval in the vertical direction on the right side of the central portion of the front machine wall 4 forming the storage chamber 7. ing. The stuck grain amount detecting device 5a is provided in a suspended state from the ceiling plate 6 to a position near the left machine wall 4 on the front machine wall 4 side in the storage chamber 7.

As shown in FIG. 5, the inlaid grain amount detecting device 5a is, for example, a strip-shaped resin film plate 6a, 6b on the left and right sides.
.., each of which is composed of conductive plates 7a, 7b, is attached to each inner surface of the above at predetermined intervals in the vertical direction, and an auxiliary plate 9b having a cavity hole 9a is provided in the middle. The resin film plates 6c are mounted on the resin film plate 6c at predetermined intervals in the vertical direction, and the resin film plates 6a, 6b, 6c are integrally molded. (FIG. 5 shows a divided state.) The resin film plates 6a, 6 are pushed by the pressure of the infused grains and pass through the hollow holes 9a of the auxiliary plate 9b of the resin film plate 6c.
b, the conducting plates 7a, 7 facing each other of the swelling amount sensor 8a
b The two are in contact with each other, and this contact causes an ON operation in a galvanic state, and the ON operation in this energized state is input to the operating device 14. By this ON operation input, the contact positions of these conducting plates 7a, 7b are reached. This is a configuration in which it is detected that the grains are stuck and the amount of stuck grains is detected.

Assuming that the conductive plates 7a and 7b are, for example, a dryer 1 having a grain drying capacity of 32 stones, the conductive plates 7a and 7b and the auxiliary plate 9b are sequentially extended from the lower portion with a minimum amount of 6 Stone, 8 stones, 12 stones, 16 stones, 20 stones, 24 stones, 2
Provided at a position corresponding to 8 stones and a maximum amount of grain 32 stones,
When the 32 stone positions are in a galvanic state, the full amount of the stake grain is detected.

The front and rear pressure sensors 10a and 10b are
It is provided on the inner surface of the rear machine walls 4, 4 near the minimum tension amount position and is normally in the OFF state by being separated from each other, but it is pushed by the pressure of the tension grain and turned ON. It is input to the operation device 14. The control device 37, which will be described later, is configured to calculate the operation time difference between these ON operation inputs. The front and rear pressure sensors 10a, 10
The ON / OFF determination signal of b is output to the control device 39 described later at regular time intervals.

The grain drying chambers 8 and 8 are provided below the storage chamber 7 between the exhaust chambers 9 and 9 on both the left and right sides and the blower chamber 10 at the center, and below the drying chambers 8 and 8. Each of the feeding valves 11 for feeding and dropping the grain is rotatably supported. The grain collecting trough 12 rotatably supports a transfer spiral and is provided below the drying chambers 8 and 8 to communicate with each other.

The burner 3 is provided inside a burner case 13, and the burner case 13 is detachably attached to the outer surface of the front machine wall 4 on the front side of the front machine wall 4 so as to correspond to the inlet side of the blower chamber 10. Installed in the dryer, the dryer 1, the moisture sensor 2
Further, an operating device 14 for starting and stopping the burner 3 and the like for each work of loading, drying and discharging is detachably provided on the outer surface of the front machine wall 4.

The exhaust fan 15 is provided on a rear exhaust wall 9, a central exhaust passage chamber 17 provided at the rear exhaust wall 9, which is provided so as to communicate with the left and right exhaust exhaust chambers 9, 9. 4 is this blower 1
A blower motor 18 for rotating and driving 5 is provided. The valve motor 19 rotationally drives the delivery valves 11, 11 via a speed reduction mechanism.

The fuel pump 20 has a fuel valve,
The fuel pump 20 is provided outside the lower plate of the burner case 13, and the fuel in the fuel tank 21 is sucked by the fuel pump 20 and supplied to the burner 3. Blower 22
Is provided on the outer side of the upper plate and is rotationally driven at a variable speed by a fan motor 23 for speed change so that combustion air commensurate with the amount of fuel supplied is blown by the fan 22 to the burner 3. The burner 3
The hot air generated from the burner case and the outside air passing through the burner case 13 are mixed into dry hot air.

The diffusion board 24 is provided at the center of the bottom plate of the transfer gutter 5 in the front-rear direction and below the supply port for supplying the transfer grains to the storage chamber 7, and uniformly diffuses and reduces the grains to the storage chamber 7. It is designed to be possible. The grain-raising machine 25 is provided on the outer side of the front side machine wall 4, is provided with a belt with a bucket conveyor 26 stretched inside, and an upper end portion is provided with a throw-out cylinder 27 between the transfer gutter 5 and the starting end portion. The lower end portion is provided with a supply gutter 28 between the lower end portion and the terminal end portion of the grain collecting trough 12 for communication.
At the lower part of the grain raising machine 25, a hopper (not shown) for feeding and supplying grains is provided.

The grain elevator motor 29 is used for the bucket conveyor 2
The belt with 6 and the transfer spiral in the transfer gutter 5 and the transfer spiral in the diffusing plate 24 and the grain collecting gutter 12 are rotationally driven. The moisture sensor 2 is provided substantially in the central portion in the vertical direction of the grain raising machine 25. The moisture sensor 2 is rotated by the moisture motor 30 when an electric measurement signal is transmitted from the operating device 14. Each of the parts is rotationally driven, and receives the grains falling while being conveyed to the upper portion by the bucket conveyer 26, and while crushing the grains by pressing, the moisture of the crushed grains is detected.

The operating device 14 has a box shape and is a push-button type in which a dryer 1, a moisture sensor 2, a burner 3 and the like are put on a surface plate of the box body and start operation is performed for each operation of drying and discharging. Each ON-OFF switch type starting means 31, stop means 32 for stopping operation, moisture setting picker 33 for setting the finishing target moisture of grain by operating position, temperature of hot air generated from the burner 3 by operating position A grain type setting selector 34, an alarm device 35 ', a display unit 36 for digitally displaying various display items, a monitor display, and the like are provided.

The control device 37 and the timer 35 are provided in the operating device 14, and include the moisture sensor 2, the amount sensor 8a, and the amount sensor 8a.
8a, ..., Detection values detected by the front / rear pressure sensors 10a, 10b, the hot air temperature sensor 38, etc., the operation of each of the starting means 31, the stop means 32, the operation of each of the setting scoops 33, 34, etc. are input. It is composed of a CPU 39, etc., which performs arithmetic and logical operations and comparison operations on these inputs.
8, 19, 23, 29, 30, timer 35, alarm device 3
5 ', the fuel valve, the fuel pump 20, etc. are started, stopped, and adjusted and controlled. The setting knobs 33, 3
Reference numeral 4 is a rotary switch system, and predetermined numerical values, types, etc. are set depending on the operation position.

The operation of the above embodiment will be described below. When performing the stake-in work, the grain dryer 1 is started by operating the starting means 31 of the operating device 14 for starting the stake-in work (step 101). When the grain to be loaded is put into the loading hopper of the grain raising machine 25, the grain is conveyed to the upper part by the bucket conveyor 26, supplied from the throwing-out cylinder 27 to the transfer gutter 5, and passed through the transfer gutter 5. It is transferred and supplied by the upper transfer spiral onto the diffusion plate 24, and is diffused and supplied into the grain storage chamber 7 by this diffusion plate 24. It is determined whether or not the front pressure sensor 10a is turned on for this stuck grain (step 10).
2) When the front pressure sensor 10a is ON, it is detected that the front machine wall 4 side is high, the timer 35 is started (step 103), and the rear pressure sensor 10b is ON.
It is detected whether or not it has been performed (step 104), and if NO, the process returns to step 104. When turned on, the operating time difference of the timer 35 is calculated, and the calculated operating time difference is
It is determined whether the setting is within a predetermined time (step 10).
5). When it is the predetermined time or more, the amount sensor 8a for squeeze-in
The amount of grain to be squeezed with the detection of is a predetermined amount (-)
Is corrected to the side (step 106). It should be noted that the corrected (-) corrected grain amount of hot grains is set as the hot air temperature as one condition item for setting the hot air temperature (step 10).
7). If YES is determined in step 105, the hot air temperature is set as the condition item for setting the hot air temperature based on the amount of the hardened grain detected by the air amount sensor 8a (step 10).
8).

On the other hand, in step 102, the front pressure sensor 10
When a is OFF, it is detected whether or not the rear pressure sensor 10b is ON (step 109). When ON is detected, it is determined that the rear machine wall 4 side is high and the timer 35 is started (step 110). Then, it is detected whether or not the front pressure sensor 10a is ON (step 111), and this is OFF.
When it is in the state, the process returns to step 111, but when it is in the ON state, the operation time difference of the timer 35 is calculated, and it is determined whether or not the operation time difference is within the predetermined time set as in the above (step 112). ). When the length of time is equal to or longer than the predetermined time, the amount of the stuck grains detected by the stuck amount sensor 8a is corrected to the side of the predetermined amount (+) determined in advance (step 113). The corrected (+) corrected grain amount is set as the hot air temperature as one condition item for setting the hot air temperature (step 1).
14).

When the drying work is started after the stake-in work is completed, the setting scoops 33 and 34 of the operating device 14 are operated to predetermined positions, and the starting means 31 for starting the drying work is operated. The grain dryer 1 is started, hot air of a predetermined temperature is generated from the burner 3, and the dry hot air in which the hot air and the outside air are mixed passes through the grain drying chambers 8 and 8 from the blower chamber 10. The exhaust fan 15 is passed through the exhaust chambers 9 and 9 and the exhaust passage chamber 16.
Is sucked and exhausted outside the machine.

The grains stored in the grain storage chamber 7 are exposed to dry hot air and dried while flowing down from the storage chamber 7 into the drying chambers 8 and 8, respectively, and then fed by the feeding valves 11 and 11. It is fed out and flows down from the grain collecting trough 12 through the supply trough 28 and the grain raising machine 25.
It is transferred and supplied by the lower transfer spiral to the inside, and is conveyed to the upper part by the bucket conveyor 26, and is transferred and supplied by the upper transfer spiral from the ejection cylinder 27 through the transfer gutter 5 and onto the diffuser plate 24 by the diffuser plate 24. It is uniformly diffused and reduced into the storage chamber 7 and circulated and dried.

When the moisture sensor 2 detects the same grain moisture as the finishing target moisture set by the operation of the moisture setting knob 33 or the following grain moisture, it is determined that the drying is completed and the controller 34 automatically controls the drying. The machine 1 is automatically stopped and the drying of the grain is stopped. FIG. 8 to FIG. 11 are diagrams showing another embodiment. For example, if it is a dryer 1 for drying 32 stones, a peek detecting the amount of spilled grains of both 20 stones and 24 stones. In the vicinity of the window 4a position, a pressure sensor 40 for ON-OFF operation is provided on the inner surface of the front machine wall 4 at a position of 20 stones, which is a substantially intermediate position of the overwhelmed grain, and the pressure of the overwhelmed grain is adjusted by the pressure sensor 40. It is configured to be pushed and turned ON, and this ON operation is input to the operating device 14, and this input and the ON operation input of the stuck amount sensor 8a at the 20 stone position of the stuck grain amount detecting device 5a. The time difference is detected. Further, the pressure sensor 40 may be provided on the inner surface of the rear machine wall 4 to detect a difference in operating time.

As shown in the flow chart of FIG. 8, the control of correcting the amount of grain to be swelled in the stake-in work of the other embodiment is performed as follows. Stake-in work is started (Step 2
01), the amount of grain infiltration detected and input by the amount of infiltration grain 8a is read (step 202), and the amount of grain infiltration is
It is detected whether it is at the midpoint or more (step 203), and YE
If it is S, the pressure sensor 40 detects whether there is a grain (step 204), and if it is YES (there is grain), the step 2
Return to 02. If NO (no grain), the hot-air temperature of the setting memory set corresponding to the amount of stuck-in grains detected by the stuck-in amount sensor 8a is corrected to, for example, (−) 2 ° C. Then, the hot air temperature is set, and the grain is dried at the corrected hot air temperature (step 205). Return to step 202.

If the answer in step 203 is NO, it is detected whether or not the amount of spilled grain is below the midpoint (step 206).
If NO, the process returns to step 202. If YES, the pressure sensor 40 detects whether there is grain (step 20).
7), if NO (no grain), return to step 202. If the answer is YES (there is grain), the hot air temperature of the setting memory set corresponding to the amount of stuck grain detected by the amount sensor 8a is corrected to, for example, (+) 2 ° C. Then, the hot air temperature is set, and the grain is dried at the corrected hot air temperature (step 208). Step two
Return to 02.

[0028] With the above, the accurate amount of the spilled grain is detected, and the accurate hot air temperature corresponding to the amount of the spilled grain is set, whereby the good grain can be dried. Figure 1
As in the flow chart of No. 1, the alarm generation control of the diffusion failure of the stake-in grains during the stake-in work according to the other embodiment is performed as follows. Stake-in work is started (Step 3
01), the amount of grain inflated detected and input by the amount sensor 8a is read (step 302), and the amount of grain inlaid is
It is detected whether it is at the midpoint or more (step 303), and YE
If it is S, the pressure sensor 40 detects whether there is a grain (step 304), and if YES (there is grain), the step 3
Return to 02. If NO (no grain), the diffusion state is poor, and if the left side is high, the alarm device 35 'issues an alarm (step 305). Return to step 302.

If the answer in step 303 is NO, it is detected whether the amount of spilled grains is below the midpoint (step 306).
If NO, the process returns to step 302. If YES, the pressure sensor 40 detects whether there is grain (step 30).
7), if NO (no grain), return to step 302. If YES (there is grain) is detected and the diffusion state is poor and the right side is high, the alarm device 35 'issues an alarm (step 308). Return to step 302.

As described above, when the spread state of the stake-in grains is poor, an alarm is issued by the alarm device 35 ', so that the spread state can be corrected during the stake-in process. Can be installed.

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 Flow chart

FIG. 2 is an enlarged side sectional view of a grain storage chamber.

[Fig. 3] Side view of the grain dryer that can be partially broken

FIG. 4 is an enlarged sectional view taken along line AA of FIG.

FIG. 5 is a partial divisional view of an enlarged front cross section of the stuck grain amount detecting device.

FIG. 6 is an enlarged front view in which a part of the operating device is broken.

FIG. 7 is a block diagram.

FIG. 8 is a flow chart showing another embodiment.

FIG. 9 is a view showing another embodiment, and is an overall side view of the grain dryer, which is partially broken.

10 is a view showing another embodiment, and is an enlarged cross-sectional view taken along line BB of FIG.

FIG. 11 is a flow chart showing another embodiment.

[Explanation of symbols]

 7 Grain Reservoir 8 Grain Dryer 8a Overhang Sensor 10a Front Pressure Sensor 10b Rear Pressure Sensor 37 Controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsunori Kono 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Eiji Nishino 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. Shinji Ninomiya, 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A grain drying chamber is provided so as to be dried by a dry air while the grains are fed from the upper grain storage chamber 7 to a lower grain drying chamber 8 and circulated. Straining amount sensors 8a, 8 that are turned on and off sequentially by the squeezed grain
a, ... are provided at predetermined intervals in the vertical direction to detect the amount of the overwhelmed grain, and at the predetermined positions in the up-down direction on the front and rear sides, the front and rear pressure sensors 1 are turned on and off by the overwhelmed grain.
In the grain dryer provided with 0a and 10b, the time difference between the ON operation of the front and rear pressure sensors 10a and 10b is calculated, and if the calculated operation time difference is equal to or longer than a predetermined time, each of the stuck amount sensors 8a. , 8a, ... A control device 37 for correcting the amount of grain to be detected detected by the device is provided.