JPS6314777B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in a grain moisture measuring device.

Generally, it is well known that the moisture content of grains is measured by measuring the electrostatic container of the grains. The volume value varies even for the same grain, so various methods are used to measure moisture. For example, by placing grain in a designated container in advance, After the grains have been determined, they are fed to a moisture meter and the electrostatic container is measured, or the grains are brought to a constant weight using a gravimeter and then transferred to a moisture meter to measure the moisture content. However, when pre-adjusting only a constant grain volume or a constant grain weight, the distribution density of the grain layer supplied to the moisture measuring device is not constant, and the moisture content and shape of branches, straw, etc. When measuring grain (hull) moisture in a dryer or other grain tank that mixes hybrids that undergo catabolic metamorphosis, it is important to accurately measure grain moisture because density unevenness occurs due to voids and bridging in the formed grain layer. However, a method has been proposed to sort out and remove impurities from the grain as a pre-treatment for moisture measurement. The technology to achieve this remained unresolved.

Further, an electromagnetic valve body is provided in an opening provided on the side plate of the dryer so that it can be opened and closed by a solenoid, and the opening is connected to a moisture content detection section via a communication gutter, and a pair of JP-A-Sho's configuration includes a rubber roll for hulling, a fan for blowing off the rice hulls, a hull discharge port, and a crushing roller for crushing the fallen rice grains.
This is known as Publication No. 51-39267.
The solenoid is activated to flow out the paddy from the dryer to the moisture content detection part, the unhulled rice is removed by the rubber roll for hulling, and the paddy hulls are discharged from the removed material to the hull discharge port by the fan for blowing off the hulls. With,
The sorted and separated brown rice is crushed between crushing rollers, and the electrical resistance value is converted to detect the moisture content, but the sample rice supplied to the moisture content detection section is de- and crushed. Therefore, the sample rice could not be reused and the grains were wasted.

The present invention is an improvement made in view of the above-mentioned problems.A moisture measuring device is installed in the rear stage of a grain conveying gutter equipped with a vibration device, and the capacitance of grains is measured in a measuring container. A moisture sensor is provided to connect the moisture measuring device and a weighing device via a control circuit, and the grain flow path in the intermediate path between the grain conveying gutter and the moisture measuring device is configured to prevent grains from being mixed into unhulled rice. The configuration is equipped with a wind selection device that separates and removes impurities.The vibration action of the vibration device causes the grains to steadily flow down from the gutter end of the grain conveying gutter, and the wind selection device mixes them into the grains. After sorting and removing impurities, the selected grains are fed into a measuring container, and the weighing device uses the weighing device and the moisture sensor measures the moisture content, which are then communicated to the control circuit, and the grain layer is density-corrected to eliminate errors. It is an object of the present invention to provide a moisture measuring device that can accurately detect grain moisture without causing any damage, can achieve labor saving by consistently processing the grain moisture measurement function, and does not damage sample grains. purpose.

The present invention will be described with reference to examples. In FIG. 1, a grain feeding port 2 and a grain discharging port 3 are provided on one side of the upper part of a box-shaped machine frame 1, and a grain discharging port 3 is provided on the lower part, respectively, and a vibration device 5 is mounted on a fixed plate 4 mounted on one side of the upper part of the machine frame 1. A grain conveying gutter 6 with A grain board 9 is installed below the end of the gutter 6, and an exhaust fan 11 equipped with a cyclone 10 is attached to the outside of the machine frame 1 provided with an air intake window 8. , are formed in the wind sorting device 13 via the air suction passage 12, and a grain flow path between the grain conveying gutter 6 and the grain flow plate 9 is formed in the wind sorting device 13. Note that 6A is a plurality of rows of sorting grooves provided at the end of the grain conveying gutter 6.

The weighing device 14 disposed at the lower part of the fixed plate 4 includes a fixed frame 18 with a hanging rod portion 17 projecting upward, and a horizontal rod portion 1.
The movable frames 20 with 9 protruding laterally are arranged vertically in parallel, and the fixed frame 18 and the movable frame 20 are interconnected by a plurality of connecting rods 21.
0 is formed to be vertically movable, and the hanging rod part 17 and the horizontal rod part 19 are connected by a spring scale 24 equipped with a spring 22, a weighing detection part 23, and the like.

The movable frame 20 of the weighing device 14 and the measuring protrusion 15 of the moisture measuring device 16 are integrally connected, and the moisture measuring device 16 is inserted into the measuring container 15 consisting of a cylindrical body 25 with an open top. Moisture sensor 2 on the wall
6 is installed, an on-off valve 27 is provided on the bottom of the measurement container 15 so that it can be opened and closed freely, and connected to an opening/closing actuator 28 such as a rotary cam mechanism. An overflow window 29 is provided to form a predetermined container.

Weighing detection unit 23 of weighing device 14 and moisture measuring device 1
6 moisture sensors 26 and control circuits 30, respectively.
The output side of the control circuit is connected to a display 31. The machine frame 1 is attached to a grain tank 32 of a grain dryer, etc., and the grain outlet 33 opened in the outer wall of the grain tank 32 and the grain feeding port 2 provided at the upper part of the grain conveying gutter 6 are connected to each other. They are connected via a grain channel 34.

The operation of the above configuration will be explained below.

The sample grains flowing down from the grain tank 32 of the grain dryer A to the grain conveying gutter 6 via the grain flow path 34 flow on the surface of the grain conveying gutter 6 due to the vibration action of the vibrating device 5, and reach the gutter end. Impurities that flow down from the grooves 6A into the measuring container 15 at the bottom and mixed into the grains (branches, straw waste, and other moisture content and hybrids that undergo catabolic metamorphosis) are discharged from the tips of the grooves 6A. Ru. During that time, the foreign matter mixed into the grains that penetrate the grooves 6A of the grain conveying gutter 6 and fall into the grain flow plate 9 and the grain flow path,
Due to the suction action of the exhaust fan 11, the air outside the machine frame 1 is sucked through the air supply window 7, and impurities are sorted and removed. The air is sucked into the exhaust fan 11 through the cyclone 10, and is then removed from the machine via the cyclone 10. The wind-sorted selected grains slide down the flow grain plate 9, collide with the wall of the cylinder 25 on the moisture sensor 26 side, and accumulate. 15 Form a grain layer (arbitrary predetermined volume) with an angle of repose inside,
Excess grain flows out through the overflow window 29.

Weighing device 14 that measures the moisture measurement signal from moisture sensor 26 and changes in grain weight in measurement container 15
The detection signals of the weighing detection section 23 are communicated to the control circuit 30, and the control circuit 30 corrects the measured value of the moisture sensor 26 by the weight density value detected by the weighing detection section 23, and performs the moisture measurement. The value is automatically displayed on the display 31.

As shown in FIG. 2, the air suction passage 39 of the wind sorting device installed in the front stage of the moisture measuring device 16 attached to the grain tank 32 is connected to the air exhaust passage 39 of the wind selection device installed in the wind box 41 of the grain dryer A. It may be directly connected to.

As explained above, according to the present invention, a wind sorting device that is provided with a grain conveying gutter and a moisture measuring device and that screens and removes impurities mixed into grains in the grain flow path in the intermediate stroke thereof. In addition, a moisture measuring device equipped with a moisture sensor and a weighing device are integrally installed, and each is connected to a control circuit. Contaminants that enter the grain are screened out and removed, and the selected grains are supplied to a moisture meter based on the weight detection signal from the weighing device, and the control circuit corrects the moisture value of the moisture sensor that measures the grain moisture value. In addition to being able to display accurate moisture values without errors, the grain moisture measurement function can be processed consistently to save labor, and it has various effects such as not damaging sample grains. It is something to play.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a side cross-sectional view of this device, and FIG. 2 is a side view of a grain dryer equipped with this device. 1...Box-shaped machine frame, 2...Grain feeding port, 3...Grain discharging port, 4...
Fixed plate, 5... Vibration device, 6... Grain conveyance gutter, 6A...
Sorting groove, 7... Air supply window, 8... Air suction window, 9... Grain board, 10... Cyclone, 11... Air exhaust machine, 12... Air suction path, 13... Wind selection device, 14... Weighing device, 15...
Measuring container, 16...moisture measuring device, 17...hanging rod part,
18...Fixed frame, 19...Horizontal rod portion, 20...Moving frame, 2
1... Continuous rod, 22... Spring, 23... Weighing detection section, 24
...Spring scale, 25...Cylinder, 6...Moisture sensor, 27
...Opening/closing valve, 28...Opening/closing actuator, 29...Overflow window,
30... Control circuit, 31... Display, 32... Grain tank, 3
3... Grain extraction port, 34... Grain flow path, 39... Air intake path,
40...Exhaust fan, 41...Wind box, A...Grain dryer.

Claims (1)

[Scope of Claims] 1. A moisture measuring device is installed in the rear stage of a grain conveying gutter equipped with a vibration device, and a moisture sensor for measuring the capacitance of grains is installed in a measuring container equipped with an on-off valve at the bottom. The moisture measuring device formed by mounting and the weighing device are integrally installed and each is connected to a control circuit,
Moisture measurement of grains, characterized in that a wind screening device for sorting and removing impurities mixed in grains is provided in a grain flow path in an intermediate path between the grain conveying gutter and the moisture measuring device. Device. 2. The grain moisture measuring device according to claim 1, wherein the measuring container is provided with an overflow window that forms a grain layer at an angle of repose.