JPH0142372B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grain moisture measuring device.

BACKGROUND ART A conventional grain moisture measuring device is capable of displaying the instantaneous grain moisture value detected by a moisture sensor on a display section.

In addition, the moisture measurement value of the grain moisture meter is displayed on the moisture display, and the measurement data is stored in the memory of the microcomputer, and the microcomputer starts calculating the stored measured moisture value data. Japanese Unexamined Patent Publication No. 142244/1983 has proposed a method in which the average value of the values is calculated and the result of the calculation by a microcomputer is displayed.

Problems to be Solved by the Invention An object of the present invention is to actively supply grains flowing down from a grain conveying trough to a measuring container due to the vibration action of a vibrating device, simplify the mechanism, etc., and eliminate the cause of failure. The measurement performance is improved reliably, and effects such as the accurate and smooth mass production of high-quality grains with a constant moisture content are obtained. When the vibration device is stopped, the grain feeding action from the grain conveying gutter to the measurement container due to the vibration effect of the vibration device is stopped, and any predetermined grain density in the measurement container is measured by the weighing device in a stable state. At the same time, the grain moisture is measured by a moisture sensor, and the grain moisture value is density-corrected by the control circuit based on this grain density. This prevents errors caused by uneven grain density and stops the vibrating device. At the same time, the relay contacts are closed and the accurate grain moisture value is displayed on the display, eliminating the need to crush the sampled sample in a crusher and successively measuring the moisture value from the electrical resistance as in the past. The grain moisture values obtained moment by moment by the moisture sensor are stored in the memory through the calculation section, and by operating the calculation keys at the appropriate time, the average value of the grain moisture values measured up to that point can be stored in the calculation section. It is calculated and displayed on the display, and the average value of grain moisture at a certain time is displayed on the display.
It is an object of the present invention to provide a grain moisture measuring device that can use this value to perform subsequent grain processing very advantageously.

Means for Solving the Problems The grain moisture measuring device of the present invention connects a measuring container provided with a moisture sensor on the inner wall to a weighing device,
A grain conveying gutter equipped with a vibrating device is provided above the measuring container, and a relay for stopping grain feeding to the measuring container is connected to the electric circuit of the vibrating device, and the electric circuit of the weighing device is connected to the electric circuit of the vibrating device. and the electric circuit of the moisture sensor is connected to a control circuit that corrects the moisture value measured by the moisture sensor according to the grain density, and the moisture sensor and the calculation key are connected to each other,
Storing the corrected moisture value in a memory and communicating the average value of the moisture values stored in the memory to a calculation unit that calculates the average value of the moisture values stored in the memory by operating the calculation key, and further communicating the calculation unit to the calculation unit via the contact of the relay. It has a structure characterized in that it communicates with a display section.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIG. 1, reference numeral 1 denotes a machine frame provided on the side of the grain tank 34, and a grain feeding port 2 is provided at one side of the upper part of the machine frame 1 with an upward opening. The grain tank 34 opens downward and is provided with a grain discharge port 3.
The grain outlet 35 opened in the wall and the grain feeding port 2 of the machine frame 1 are connected by a grain flow path 36, and the sample grains in the grain tank 34 are transferred from the grain feeding port 2 onto the grain conveying gutter 6. It is configured so that it is supplied downstream.

A measuring container 8 is mounted inside the machine frame 1 facing below the grain conveying gutter 6, a fixing plate 4 is provided at the lower part of the grain conveying gutter 6, and the measuring container 8 is attached to the fixing plate 4.
A moisture sensor 18 is attached to the inner wall surface of a cylindrical body 17A, which is connected to a weighing device 7 provided below and has an open upper part of the measurement container 8. A grain conveying gutter 6 equipped with a vibrating device 5 is placed above the body 17A to serve as a grain feeding device, and an on-off valve 1 serving as a discharge valve is provided at the bottom of the cylindrical body 17A.
9 is provided so as to be openable and closable, and an on-off actuating device 20 is connected to the on-off valve 19 .

Inside the machine frame 1, there is a fixed frame 10 with a hanging rod part 9 protruding toward the measuring container 8 at the upper end at the lower part of the fixed plate 4, and a horizontal rod part protruding toward the fixed frame 10 near the center. The fixed frame 10 and the movable frame 12 are connected to each other by a connecting rod 13, and the movable frame 12 is movable in the vertical direction, and The hanging rod part 9 of the frame 10 and the horizontal rod part of the moving frame 12 are connected by a spring scale 16 equipped with a spring 14, a weighing detection part 15, etc.
A cylindrical body 17A of the measuring container 8 is attached to the moving frame 12.

A shaft portion of a solenoid 21 and an on-off valve 19 are connected to the on-off actuating device 20 by an on-off link 22 .

A container for a control circuit A including a display section 30 is attached to the side of the machine frame 1.

In the measurement container 8 shown in FIG. 1, grains are supplied by flowing down from the gutter end of the upper grain conveying gutter 6 to a cylinder 17A formed to have a predetermined capacity by the vibration action of the vibration device 5. 17A is designed to measure the weight of grains that have formed an angle of repose at the top.

The electric circuit 7' of the weighing device 7, the electric circuit 5' of the vibrating device 5, the electric circuit 18' of the moisture sensor 18, and the electric circuit 20' of the on-off actuator 20 of the on-off valve 19 are interconnected via the control circuit A. have been contacted in connection with.

The vibration of the vibration device 5 causes the sample grains to flow down from the gutter end of the grain conveying gutter 6 to the cylindrical body 17A of the measuring container 8, and the weighing device 7 measures an arbitrary predetermined grain density. Moisture sensor 18
The grains whose moisture content has been measured are discharged through the on-off valve 19, and
This moisture measuring action is configured to be repeated continuously.

FIG. 2 shows a control circuit A of a device for measuring the weight of grains in the measurement container 8 formed to a predetermined capacity as shown in FIG. The output sides of the sensor 29, product selection switch 31, and weight detector 27 are connected to the input side of the calculation unit 28, and the dissolution side of the calculation unit 28 is connected to the display unit via the relay contact _R1. 30, and the calculation unit 28 is contacted with the calculation key 32 and memory 33, respectively.
A timer and a relay electromagnetic coil are interposed in series between the power supply.

The calculation unit 28 stores the moisture value of the moisture sensor 18 in the memory 33 and calculates the average value of the moisture values stored in the memory 33 by operating the calculation key 32.

Further, the detection signal from the moisture sensor 18 is combined with the detection signal from the weight detector 27 and the temperature sensor 2.
The detection signal from 9 is compared with the arithmetic unit 28, and is appropriately corrected by addition or subtraction, and the corrected signal is transmitted.

On the other hand, when the timer passes a predetermined grain feeding time, the relay is energized, the relay opens the on/off contact (not shown) provided on the vibrating device 5, and the grain conveying gutter 6 is controlled by the vibrating device 5. The vibration is stopped, the grain feeding action to the cylindrical body 17A of the measuring container 8 is interrupted, and the contact _R1 of the relay shown in FIG. and a measuring container 8 supplied with a predetermined volume of grains.
Then, the subsequent grain feeding action by the vibrating device 5 is stopped, and the measured moisture value stably measured by the moisture sensor 18 is density-corrected according to the change in the weight of the weighed grains, and the corrected accurate value is calculated. The moisture value is configured to be automatically displayed on the display section 30.

Next, the operation of this embodiment will be explained.

The sample grains flowing down from the grain tank 34 to the grain conveying gutter 6 through the grain flow path 36 and the grain feeding port 2 are moved by the vibrating device 5.
When the grains are supplied by flowing down from the gutter end of the grain conveying gutter 6 to the measuring container 8 due to the vibration action (see FIG. 1), and forming a grain layer at the angle of repose on the upper part of the cylindrical body 17A of the measuring container 8, Immediately, the vibrating device 5 is stopped by a stop signal from a timer provided in the control circuit A, and the supply of grains from the grain conveying gutter 6 to the measuring container 8 is stopped.

Next, the weighing device 7 weighs the measuring container 8 into which a predetermined amount of grain has been fed, and the weight of the grain is measured.The weight detector 27 inputs the detection signal to the control circuit A, and at the same time, the moisture sensor 18 measures the capacitance of the grains in the cylindrical body 17A of the measurement container 8, and inputs the detection signal to the control circuit A, and the control circuit A converts the moisture value measured by the moisture sensor 18 to an arbitrary predetermined value. The density is corrected, and the density-corrected moisture value is displayed on the display unit 30 provided in the container of the control circuit A.

The grains in the cylindrical body 17A of the measuring container 8 that have finished moisture measurement are transferred to the opening/closing valve 19 via the opening/closing rod 22 by actuating the solenoid 21 of the opening/closing actuator 20 in response to the completion signal from the timer. Rotate, cylinder 17
Open the bottom of A and transfer the grains inside the cylinder 17A to the machine frame 1.
When the grains inside the cylinder 17A are completely discharged, the solenoid 21 of the opening/closing actuator 20 is actuated, the opening/closing valve 19 closes the bottom of the cylinder 17A, and the vibrating device 5 again closes the bottom of the cylinder 17A. Moisture measurements are carried out continuously by feeding grain into the container.

The grain moisture value obtained by density correction as described above is stored in the memory 33 through the calculation section 28, and if the calculation key 32 is pressed at the appropriate time, the calculation section 28 will store the value in the memory 33 by then. The average grain moisture value calculated by dividing the memorized sum of the grain moisture values measured by the moisture sensor 18 by the number of measurements is calculated, and the average grain moisture value calculated by the calculation unit 28 is displayed on the display unit 30.
to be displayed.

Effects of the Invention As described above, according to the grain moisture measuring device of the present invention, a measuring container provided with a moisture sensor on the inner wall is connected to a weighing device, and a vibrating device is provided on the upper part of the measuring container. By providing a grain conveying gutter, the grains flowing down from the grain conveying gutter due to the vibration action of the vibrating device can be actively supplied to the measuring container, and the mechanism is simplified, eliminating the cause of failure. Since it is eliminated, the measurement performance can be reliably improved, and effects such as accurate and smooth mass production of high-quality grains with a constant moisture value can be obtained.

In addition, a relay that stops feeding grain to the measuring container is connected to the electric circuit of the vibrating device, and the electric circuit of the weighing device and the moisture sensor are connected.
The moisture value measured by the moisture sensor is communicated with the control circuit that corrects it according to the grain density, and the moisture sensor and the calculation key are used to store the moisture value of the moisture sensor in the memory and also to store the average value of the moisture values stored in the memory. are communicated to the computing section that calculates them by operating the computing keys, and the computing section is further communicated to the display section via the relay contacts.When a predetermined amount of grain is supplied to the measuring container, the vibration device is activated by the relay. When the grain density in the measuring container is measured by the weighing device in a stable state, the grain feeding action from the grain conveying gutter to the measuring container due to the vibration action of the vibrating device can be stopped. At the same time, the grain moisture is measured by a moisture sensor, and the control circuit corrects the grain moisture value using this grain density. This makes it possible to prevent errors caused by grain density unevenness, and to prevent vibrations. Since the relay contact closes at the same time as the device stops, the accurate grain moisture value can be displayed on the display, and instead of grinding the sampled sample in a crusher and sequentially determining the moisture value from the electrical resistance. There is no need to measure the grain moisture value, and if you store the grain moisture value obtained every moment by the moisture sensor in the memory through the calculation section and operate the calculation key at the appropriate time, you can check the grain moisture value measured up to that point. The average value of moisture content can be calculated in the calculation unit and displayed on the display, so the average value of grain moisture at a certain time will be displayed on the display, and this value can be used to calculate future results. Grain processing can be carried out very advantageously.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a grain moisture measuring device according to an embodiment of the present invention, and FIG. 2 is a block diagram of the same. 1... Machine frame, 2... Grain feeding port, 3... Grain discharging port, 4
... Fixed plate, 5 ... Vibration device, 5' ... Electric circuit,
6...Grain transport gutter, 7...Weighing device, 7'...Electric circuit, 8...Measuring container, 9...Hanging rod part, 10
...Fixed frame, 11...Horizontal rod part, 12...Moving frame,
13... Continuous rod, 14... Spring, 15... Weighing detection unit, 16... Spring balance, 17A... Cylindrical body, 18...
Moisture sensor, 18'... Electric circuit, 19... Opening/closing valve, 20... Opening/closing actuator, 20'... Electric circuit, 21... Solenoid, 22... Opening/closing link,
27...Weight detector, 28...Calculation unit, 29...
Temperature sensor, 30...display section, 31...product selection switch, 32...calculation key, 33...memory, 34...grain tank, 35...grain outlet, 36...
... Grain flow path, A ... Control circuit, R ₁ ... Relay contact.

Claims (1)

[Claims] 1. A measuring container equipped with a moisture sensor on the inner wall is connected to a weighing device, a grain conveying gutter equipped with a vibrating device is provided on the top of the measuring container, and an electrical circuit of the vibrating device is connected to the measuring container. A relay is connected to stop the grain feeding action of the weighing device, and an electric circuit of the weighing device and an electric circuit of the moisture sensor are connected to a control circuit that corrects the moisture value measured by the moisture sensor according to grain density. , the moisture sensor and the calculation key are respectively connected to a calculation unit that stores the corrected moisture value in a memory and calculates the average value of the moisture values stored in the memory by operating the calculation key, and A grain moisture measuring device, characterized in that a display section is connected to a display section through a contact point of the relay.