JPH10197149A - Grain moisture value measuring apparatus for grain dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove damaged grain generated in a measuring operation of a grain moisture measuring apparatus for detecting dryness of the grain during a drying step at each predetermined time out of the apparatus to control operability of a dryer while effectively circulating the grain in a bypass state input from a receiving port into a body and returned to a grain circulating system of the dryer from a return port at each scooping operation of the grain of a bucket at the time of non-measurement. SOLUTION: A receiving port 22 is opened at an upper part of a wall 21 of a body 20 of the grain moisture measuring apparatus 20 associated with an outer surface of a grain elevation tower 10 of an elevator 1 of the grain dryer. A return port 25 is opened at a lower part of the wall 21. A return channel 26 obliquely descending over the wall from below the channel formed of a cutout surface formed on peripheral surfaces of a pair of sensor rolls 23 shaft supported in the wall is formed at a bottom of the body 20. An exhaust port 27 opened downward is provided at an upstream side of the port 25 is provided at a bottom of the channel 26. And, switching shutters S are provided at both the ports.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for circulating and flowing a grain stretched in a machine body by a grain conveying device mounted on the machine body and drying air while flowing through a drying section in the machine body. The present invention relates to an improvement in a grain moisture value measuring device which is equipped in a grain dryer for automatically measuring the moisture value of grains during a drying process in a grain dryer in a form of being subjected to drying.

[0002]

2. Description of the Related Art Conventionally, a grain moisture measuring device in a grain dryer described above usually has, as shown in FIG.
FIG. 2 shows, on the outer surface of the hoisting tower 10 using the elevator 1 erected on the outer surface of the machine body a, of the transport device for circulating and flowing the grains mounted on the machine body a. And the container 20 of the grain moisture value measuring device 2
Bucket 1 of bucket conveyor 11 installed in 0
When... Scoop up and transport the grains, a part of the grains that are scooped up by the operation are transferred from a receiving port 22 provided in the vessel wall 21 of the vessel 20 on the side of the fryer tower 10. The sample is received so as to be sampled, and the moisture value of the grain is measured by a pair of sensor rolls 23.

[0003] The grain moisture value measuring device 2 forms a pair of sensor rolls which form the sampled grain into a form having conductivity so as to also serve as an electrode, and which is rotatably supported in the vessel 20. 23 and 23 are crushed in the facing gap,
The moisture value is measured based on the conductivity of the crushed grains, and the sensor rolls 23 are rotated at a reduced speed via a speed reduction mechanism by the operation of a motor to perform a predetermined measurement operation. Sometimes, as shown in FIG. 3, a notch surface 23 formed on a peripheral surface of the pair of sensor rolls 23.
a and 23a are opposed to each other in parallel, and when the limit switch 24 is actuated, the sensor rolls 23 and
When the rotation of the motor 23 stops and the predetermined time controlled by the timer provided in the control circuit elapses and the measurement signal is input again to the drive circuit of the motor, the sensor roll 23 and the motor 23 as shown in FIGS. The rotation of the sensor roll 23 starts, the crushing and the measurement are repeated, and the rotation of the sensor rolls 23 stops at the state position shown in FIG.

Thus, every time the bucket 110 scoops up the grains, the receiving port 2 provided in the container 20 is
The grain sampled from 2 is the sensor roll 2
During the interval of the measurement operation in which 3 · 23 is stopped (non-measurement operation state), this sensor roll 23
The flow path W formed by the cutout surfaces 23a of the 23 flows as it is, and the return flow path 26 continuous with the return opening 25 provided in the wall 21 of the grain moisture value measuring device 2 flows through the flow path W. Then, the crushed granules when the operation of measuring the moisture value is performed by crushing and flowing into the grain tower 10 of the elevator 1 are also returned from the return port 25 through the return flow path 26. It is designed to flow into the lifting tower 10 of the elevator 1.

[0005]

When the grain to be dried is rice grain, the grain moisture value measuring device 2 in the above-mentioned grain dryer has the following features. The lifting tower 10 of the elevator 1 through the return port 25 and the return flow path 26
Into the bucket conveyor 11
Even if it mixes with the grains that are pumped up and circulates through the body a, it is separated and removed together with the dust by the dust remover mounted on the body a of the grain dryer, and also dried. Even if this crushed rice grain is mixed in the rice grain after the processing, it will be removed in the post-treatment process such as sorting the brown rice grain after the hulling by a grain sorter. Does not cause any trouble.

However, when the grain to be dried is wheat or barley, the sensor roll 2 of the grain moisture measuring device 2
In the case of wheat, the surface of the seed coat is not damaged, and in the case of barley, it is crushed flat. Problems such as difficulty in removal by a dust remover provided in the dryer and removal by a grain sorter after the drying process are caused.

[0007] As described above, the damaged grain generated when the grain moisture value measuring device 2 performs the measuring operation is removed by the grain dryer A.
The above-mentioned problem caused by mixing with the grains in the body a of the machine a is that the grains damaged for the measurement are transferred to the grain dryer A.
The problem is solved by allowing the air to be discharged to the outside without returning to the inside of the body a. In such a case, during the interval between the measurement operations (the non-measurement operation state),
Each time the bucket 110... Of the bucket conveyor 11 scoops up grains, a part of the grains is sampled from the receiving port 22 provided in the vessel 20 of the grain moisture value measuring device 2. The grain drier A flows into the container body 20, passes through a flow path W formed by the opposed notched surfaces 23 a of the pair of sensor rolls 23, 23, and passes through a return port 25 and a return flow path 26. All the grains that should be returned to the body a of the vehicle are also discharged to the outside. And
Another problem arises in that the kernels flowing through the vessel 20 in a bypass during the interval of the measurement operation are in a considerable amount, and thus a large amount of loss is caused.

The present invention has been made in order to solve this problem which has occurred in the conventional means, and when the grain is dried by the grain dryer A, the grain is dried during the drying step. The degree of damage is detected at predetermined time intervals, and damaged grains generated by the measurement operation of the grain moisture value measuring device 2 performed for controlling the operation and operation of the grain dryer A are bucketed during non-measurement operation. Each time the grain is scooped up by 110 ..., it is taken into the vessel 20 from the receiving port 22 and returned.
To provide a new means for allowing the grains to be taken out of the vessel 20 while ensuring that the grains are returned to the grain circulation system of the grain dryer A from the bypass circulation. With the goal.

[0009]

Means for Solving the Problems In the present invention, as a means for achieving the above-mentioned object, there is provided a method for measuring a grain moisture value to be mounted on the outer surface of a fryer tower 10 of an elevator 1 of a grain dryer A. In the container 20 of the apparatus 2, a receiving port 22 is opened in the upper part of the container wall 21 on the side of the lifting tower 10, a return port 25 is opened in the lower part of the container wall 21, and in the bottom of the container 20, A flow path W of kernels formed by cutout surfaces 23a formed on the peripheral surfaces of a pair of sensor rolls 23 axially mounted in the container 20.
A return channel 26 is formed, which extends downward from the bottom of the container wall 21 toward the lifting tower 10, and opens downward from the return port 25 on the floor surface of the return channel 26 upstream. And a shutter S for opening and closing the discharge port 27 and the return port 25. The apparatus for measuring a grain moisture value in a grain dryer is provided.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-described means of the present invention, the grain moisture value measuring device 2 comprises a casing 2 formed in a casing thereof.
0 is mounted on the outer surface of the bottom of the hoisting tower 10 of the elevator 1 which forms part of the grain circulation system of the grain dryer A, and the upper part of the wall 21 on the side of the hoisting tower 10. On the side, when each bucket 110 of the bucket conveyor 11 provided in the hoisting tower 10 rotates the lower revolving section and scoops up the grains, the buckets 110 jump out of the bucket 110 by the operation thereof. In the container 20, a sensor roll 23, which detects the moisture value by crushing the kernel coming from the inlet 22 and detecting the moisture value by the degree of energization, is opened. The sensor roll 23.
Notches 23a, 23a formed on the peripheral surface of the nozzle 23 respectively open a return port 25 which communicates with the lower end side of the flow path W of the grain formed to face the pair during non-measurement operation. A return channel 26 is formed to return the kernels flowing through the channel W and the return port 25 to the bottom of the fryer tower 10.
6 is a sensor roll 23 that straddles the vessel wall 21 of the vessel 20.
A return opening 25 provided at a lower side of the vessel wall 21 by being provided so as to extend from below the flow passage W of the grain formed by the cutout surfaces 23a of the peripheral surface of the 23 to the bottom of the hoisting tower 10; Is located in the middle of the return flow path 26.

At the beginning of the return channel 26, upstream of the return port 25 and adjacent to the return port 25, a discharge port 27 which is open to the outside of the body 20 is opened. An opening / closing shutter S is provided at each of the discharge port 27 and the above-described return port 25. When the sensor rolls 23 are driven to perform the measurement operation, the shutter S is opened and the return port 25 is closed. After the measurement operation, the pair of cut surfaces 2 of the sensor rolls 23
When the passages 3a and 23a form the flow path W, the outlet 27
Is controlled so as to close and open the return port 25 in synchronization with the measurement operation.

The shutter S may be provided at each of the discharge port 27 and the return port 25. The shutter S is closed by switching the discharge port 27 and the return port 25 alternately by one shutter S. It may be.

[0013] Thus, the sensor roll 23
When the measuring operation is performed by rotating the driven roller 23, the crushed or damaged kernel G ′ crushed between the opposing peripheral surfaces of the sensor rolls 23 and 23 is discharged from the outlet 27 to the outside. The sensor rolls 23 are stopped at predetermined rotation positions after one measurement operation is completed, and a pair of cutout surfaces 23a around the sensor rolls 23a During the interval between the measurement operations in which the W is formed (the non-measurement operation state),
The grain G flowing down the flow path W flows over the upper surface of the discharge port 27 closed by the shutter S, is returned from the return port 25 through the return flow path 26 into the hoisting tower 10, and is sampled. The grain thus obtained flows in the vessel 20 of the grain moisture value measuring device 2 in a bypass shape.

[0014]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 6 is a vertical sectional front view of a main part of a grain dryer A for carrying out the present invention. In FIG. 6, reference numeral 1 denotes an upright front of a body a of the grain dryer A as shown in FIG. Elevator that can be installed, 1
Numeral 0 denotes a lifting tower thereof, 11 denotes a bucket conveyor which can be stretched in the lifting tower 10, 110 ... buckets thereof, 2 denotes a grain moisture value assembled on an outer surface of the lifting tower 10 of the elevator 1. The device, 20 shows its body.

The container 20 of the grain moisture value measuring device 2 is formed in a machine shape, and a receiving port 22 is opened at the upper end side of the container wall 21 on the side of the lifting tower 10 and at the lower end side. A return port 25 is provided, and a box-shaped mounting seat 28 is formed integrally and continuously on the outer surface side of the vessel wall 21. It is attached to the outer surface of the lifting tower 10 by abutting against and fixing to the outer surface of the opening 10 a formed on the side surface of the bottom of the 10.

As shown in FIG. 3, electrically conductive sensor rolls 23 provided with cutouts 23a in a part of the peripheral surface thereof are provided in the container 20 inside the container wall 21 as described above. It is pivotally supported so as to face a pair below the inlet 22.

The pair of sensor rolls 23, 23
These rotation shafts are transmitted to the output shaft of the motor M attached to the body 20 via a speed reduction mechanism, and the measurement signal is input to the control circuit of the motor M, whereby the aforementioned FIG. 4 and 5, the water is detected while the grains are crushed and the grain is crushed. The operation returns to the state shown in FIG. 3 to stop, and the measurement signal is input again. By being controlled so as to repeat the measurement operation, and when one measurement operation is completed and stopped, the notch surfaces 23a, 23a formed on the peripheral surface face each other, so that the space between them is There is no difference from the conventional means in that a flow path W through which the grains G jumping into the vessel 20 from the receiving port 22 flow is formed.

Reference numeral 26 denotes a return flow path for guiding the grains flowing through the flow path W back into the hoisting tower 10, and a floor plate of the vessel 20 and a mounting seat portion integrally connected to the vessel 20. It is formed on an inclined wall which is inclined downward toward the lifting tower 10 by 28 floor plates.

The return flow path 26 straddles the container wall 21 of the container 20 and is connected to the pair of sensor rolls 23 and 2 described above.
No. 3 cut-out surfaces 23a are provided so as to extend from below the flow path W formed opposite to the bottom of the fryer tower 10, whereby a return port 25 provided on the lower end side of the vessel wall 21 is provided. Is located in the middle of the return flow path 26.

Reference numeral 27 denotes a discharge port opened at a start end of the return flow passage 26 and at a position upstream of the vessel wall 21.
The return passage W is provided so as to open downward before the return opening 25.

Reference numeral S denotes a shutter for opening and closing the discharge port 27. The shutter is provided so as to open and close the discharge port 27 by rotating about a rotation shaft 29. The outlet port 27 is closed by turning to a posture of lying down so as to be a floor plate on the starting end side of the return flow path 26.

The shutter S is provided with its rotating shaft 29 at the lower edge of the return port 25, and closes the return port 25 when it stands up and the discharge port 27 is opened. This is shared with a shutter for opening and closing the return port 25.

Further, the shutter S has its rotating shaft 29 protruding from the outer surface of the body 20, and the operating section attached thereto is manually operated, or the aforementioned sensor rolls 23 are driven. The motor M is connected to the motor M via the transmission mechanism.
Is driven to rotate the sensor rolls 23 and 23 to perform the measurement operation, open the discharge port 27 and close the return port 25, and when one measurement operation is completed, turn over and rotate Automatic control is performed so that the outlet 27 is closed and the return port 25 is opened.

[0025]

As described above, in the drying operation of drying the grain by the grain dryer A, the means of the present invention determines the moisture value of the grain during the drying step by the grain moisture value measuring device 2 at regular intervals. When the operation of the grain dryer A is controlled based on the moisture value, the crushed grain or the damaged grain G ′ crushed by the measurement operation is operated during the measurement operation of the grain moisture value measuring device 2. Can be taken out of the apparatus through the outlet 27 opened by the opening operation of the shutter S, and by closing the outlet 27 by manual or automatic control when one measurement operation is completed. Sensor roll 23.2
Since the grains G flowing through the flow path W formed by the cutout surfaces 23a of the third grain return to the fryer tower 10 through the return port 25 and the return flow path 26, the crushed grains or damaged grains are returned. While eliminating the inconvenience caused by the mixing of the grains G 'into the grains in the airframe a, the grains constantly sampled from the grains circulating in the circulating system are returned to the circulating system so that no lost grains are generated. Become like

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a grain dryer.

FIG. 2 is a vertical sectional front view of a portion where the grain moisture value measuring device is mounted.

FIG. 3 is a side view of a main part of the grain moisture value measuring device according to the first embodiment;

FIG. 4 is an explanatory diagram of an operation of a main part of the grain moisture value measuring device.

FIG. 5 is an explanatory diagram of a state where the measuring operation of the main part of the grain moisture value measuring device has proceeded.

FIG. 6 is a vertical sectional front view of a portion of a grain dryer for embodying the present invention, which incorporates a grain moisture value measuring device.

FIG. 7 is a longitudinal sectional front view of the same portion in a state where the grain moisture value measuring device is in a non-measuring operation state.

FIG. 8 is a perspective view of a grain moisture value measuring device.

[Explanation of symbols]

A: grain dryer, GG ': grain, M: motor, S ...
Shutter, W ... flow path, a ... body, 1 ... elevator, 10 ...
Lifting tower, 10a ... opening, 11 ... bucket conveyor, 1
DESCRIPTION OF SYMBOLS 10 ... bucket, 2 ... grain moisture value measuring apparatus, 20 ... container body, 21 ... container wall, 22 ... reception port, 23 ... sensor roll,
23a: Notched surface, 24: Limit switch, 25: Return port, 26: Return channel, 27: Discharge port, 28: Mounting seat,
29 ... Rotary axis.

Claims (1)

[Claims] 1. A receiving port at an upper part of a vessel wall 21 on the side of the grain tower 10 of a vessel 20 of the grain moisture value measuring device 2 to be mounted on the outer surface of the grain tower 10 of the elevator 1 of the grain dryer A. 22, a return port 25 is opened at the lower part of the container wall 21, and a pair of sensor rolls 2 that are mounted on the inside of the container 20 are provided at the bottom of the container 20.
A return flow path 26 that is inclined downward from the lower part of the flow path W of the grain formed by the cutout surfaces 23a formed on the peripheral surface of the third and the 23th toward the lifting tower 10 over the vessel wall 21 is formed. A shutter S which is formed and opens downward on the floor surface of the return channel 26 upstream from the return port 25 and opens downward, and a shutter S which opens and closes the discharge port 27 and the return port 25
A grain moisture value measuring device in a grain dryer, comprising: