JPS6148658B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grain density stabilizer for a grain moisture meter.

Conventional technology Conventionally, there are various grain moisture meters that measure the moisture value of grains by measuring the capacitance of the grains. Transferring the grains to a grain moisture measurement room and detecting the capacitance of the grains was considered the best method for increasing the accuracy of moisture values among the capacitance methods. However, simply by keeping the weight of the grain sample constant, the density of the grain distribution within the moisture measurement chamber is not constant, resulting in a fairly large error in the moisture value, making it difficult to use as a precise grain moisture meter. In particular, when measuring the moisture content of flowing grains, it is not possible to pre-process the quantitative grains, making the measurement even more uncertain, and there has been no precedent for its practical use.

For this reason, a device for detecting the moisture content of grains, etc. that vibrates the object to be detected in a fluid state is known as Japanese Patent Publication No. 48-23480. A cylinder is fitted, a diaphragm is provided facing the lower end opening of the cylinder at an appropriate interval, a vibrator is provided on the diaphragm, and an adjustment cylinder fitted to the cylinder is slid up and down. , by adjusting the gap between the adjustment cylinder and the diaphragm, resistance is imparted to the object to be detected within the cylinder, and the density of the grain serving as the object to be detected within the cylinder is determined by its weight. Therefore, it was not possible to actively increase the value.

Problems to be Solved by the Invention An object of the present invention is to deal with the above-mentioned problems by actively increasing the grain density in the moisture measuring chamber, and further applying vibration to the moisture measuring chamber. It is possible to uniformize the density of the grain layer as a whole, and prevent cavitation accidents in the grain layer that occur with samples with large individual differences in morphology or skin, such as rice grains, making it safe and highly accurate with less error. An object of the present invention is to provide a grain density stabilizing device for a grain moisture meter capable of measuring moisture values.

Means for Solving the Problems The grain density stabilizing device of the grain moisture meter of the present invention includes a sensor consisting of an electrode in the moisture measurement chamber, a grain feeding mechanism above the sensor in the moisture measurement chamber, and a grain feeding mechanism in the moisture measurement chamber. The structure is characterized in that a grain removal mechanism having a smaller transport force than the grain feeding mechanism is provided below the sensor, and a vibrating device is attached to the side of the moisture measuring chamber.

Function A grain feeding mechanism provided at the top of the sensor consisting of an electrode provided in the moisture measuring chamber supplies grains into the moisture measuring chamber, and the grain discharging mechanism has a smaller transport force than the grain feeding mechanism provided at the bottom of the sensor. actively increases the grain density in the moisture measuring chamber and drains the grains;
A vibration device provided on the side of the moisture measuring chamber vibrates the grains within the moisture measuring chamber.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIGS. 1 and 2, 1 is a tank of a grain dryer, and a moisture measuring chamber 8 is provided on the side wall of the tank 1. is installed, and the moisture measuring chamber 8 is provided with a sensor 7 consisting of an electrode composed of an anode 5 and a cathode 6 for measuring the moisture value of grains as capacitance. At the top, there is a screw conveyor 3 for grain feeding as a grain feeding mechanism.
is suspended horizontally, and the grain feeding screw conveyor 3
One end thereof is inserted into a small hole 2 formed in the tank 1, and a plurality of drop ports 4 are formed in the bottom of the cylinder of the grain feeding screw conveyor 3. A screw conveyor 3 for grain feeding is installed below the sensor 7.
A grain threshing screw conveyor 9 is horizontally suspended as a grain threshing mechanism with a smaller transport force than the grain threshing mechanism, and serves as a resistance device for actively increasing the grain density in the moisture measuring chamber 8. A discharge port 10 is provided at the bottom of the grain screw conveyor 9 in the moisture measuring chamber 8, and the discharge port 10 is connected to the grain flow section 14 of the tank 1. The grains whose moisture content has been measured are returned to tank 1.

The sensor 7 is connected to the circuit of a capacitance measuring device 11, which is a moisture measuring device, and has a circuit switch 12 that stops the hot air action, which is a grain conditioning action, when the grains in the tank 1 reach a predetermined moisture content. In addition, a vibrator 13 is attached to the side wall of the moisture measurement chamber 8 and serves as a vibrating device that rotates an oscillator (not shown) to vibrate the grains in the moisture measurement chamber 8. A density stabilizer is configured.

An on-off valve 15 is provided at the outlet 10 of the moisture measuring chamber 8, and by closing the outlet 10 with the on-off valve 15, the moisture measuring chamber 8 is used for batch measurement.

In addition, the vibrator 13 can also use the vibration of the electromagnet as it is for the vibration of the moisture measurement chamber 8.

Next, the operation of this embodiment will be explained.
The grains in the tank 1 are transported by a grain feeding screw conveyor 3, and are supplied into a moisture measuring chamber 8 through a drop port 4 of the grain feeding screw conveyor 3. A sensor 7 consisting of an electrode composed of an anode 5 and a cathode 6 detects the moisture value of the grain as a capacitance, and the grain screw conveyor 9 horizontally suspended below the sensor 7 measures the moisture content. The grains in the chamber 8 are discharged from the outlet 10.
More leakage.

The grains in the moisture measuring chamber 8 are subjected to resistance from the grain discharging screw conveyor 9, which serves as a resistance device and is placed horizontally under the sensor 7, which has a smaller transport force than the grain conveying screw conveyor 3, and the grain discharging screw conveyor 9 The grain layer becomes moderately compressed around the periphery, its density is actively increased, and it flows down inside the moisture measuring chamber 8 while maintaining its density appropriately.

The grains flowing out from the outlet 10 of the moisture measuring chamber 8 flow down to the grain flow lower part 14 of the tank 1.
The tank 1 is fed through a grain lifting machine on the side of the tank 1.
Return it to the top of the page.

When the sensor 7 detects that the grains in the moisture measurement chamber 8 have reached a predetermined moisture value, the capacitance measurement device 11 connected to the sensor 7 in the moisture measurement chamber 8 The circuit switch 12 is activated to stop the hot air action which is the refining action of the grain dryer.

In addition, the vibration of the moisture measurement chamber by the vibration device is intermittently vibrated, and it is also possible to measure the moisture content of grains when the moisture measurement chamber is not vibrated. Furthermore, various phenomena occur in the grain layer by adjusting the vibration direction, frequency, amplitude, etc. of the vibration device.
It can be applied in various ways depending on the purpose.

Effects of the Invention As described above, according to the grain density stabilizing device of the grain moisture meter of the present invention, a sensor consisting of an electrode is provided in the moisture measurement chamber, and a grain feeding mechanism is provided above the sensor in the moisture measurement chamber. In addition, by providing a grain removal mechanism with a smaller transport force than the grain feeding mechanism at the bottom of the sensor, the grain density in the moisture measurement chamber is actively increased, and The installed vibration device applies vibration to the moisture measurement chamber, adjusts and stabilizes the distribution of the grain layer in the moisture measurement chamber, equalizes the layer density of the grains, and makes the grains solid in shape or skin like paddy grains. It is possible to prevent cavitation accidents in the grain layer that occur with samples with many differences, and it is possible to measure moisture values safely and with high precision with little error.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the same essential parts. 1...Tank, 2...Small hole, 3...Screw conveyor for grain feeding, 4...Drop port, 5...Anode,
6...Cathode, 7...Sensor, 8...Moisture measurement chamber, 9...Screw conveyor for grain removal, 10...
...Discharge port, 11...Capacitance measuring device, 12...Circuit switch, 13...Vibrator, 14...
Grain flow lower part, 15...open/close valve.

Claims (1)

[Claims] 1. Install a sensor consisting of electrodes in the moisture measurement room,
A grain feeding mechanism is provided above the sensor of the moisture measuring chamber, a grain removing mechanism having a smaller transfer force than the grain feeding mechanism is provided below the sensor, and a vibration device is attached to the side of the moisture measuring chamber. Grain density stabilizer for grain moisture meter.