JPS6318697B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is intended to improve the measurement accuracy of an electrical resistance type moisture meter, and relates to a brown rice moisture detection device in which a chamber is removed in a step before measuring the moisture content of grains.

Generally, it is known to measure the moisture content of unhulled rice by detecting the electrical resistance value between crushing rolls, but when measuring the moisture content by crushing unhulled rice, there is a difference in moisture between the rice husk and the brown rice, so it is not possible to measure the moisture accurately. Since measurement is difficult, a device for removing unhulled rice and supplying brown rice to a moisture measuring device has been proposed in Japanese Utility Model Publication No. 14613/1983. In this device, a pair of hulling rolls facing each other are connected to a pair of crushing rolls via a wind selection path equipped with a blower, and the pair of crushing rolls are connected to a meter relay circuit that is activated by a change in electrical resistance. The rice husks are removed by being supplied to the gap between the hulling rolls, and the rice husks are separated from the brown rice grains in the wind selection path, and the brown rice is then crushed by being supplied to the gap between the crushing rolls and detected. This technology has a technology that can reduce fluctuations in moisture values compared to conventional methods. However, the contact between the rice grains in the gap between the two hulling rolls is extremely instantaneous, and it is difficult to completely release the grains into brown rice grains, resulting in a lack of precision. If the gap between the rolls is controlled narrowly, it will result in crushed grains, and the crushed grains will reduce the moisture content due to wind separation, making it impossible to accurately detect moisture values. This was where a measuring device was needed.

The present invention is an improvement made in view of the above-mentioned points, in which a fixed disk with a paddy feed port provided in the center and a rotating disk are installed facing each other in the escape chamber, and either one or both of the fixed disk and the rotating disk are provided. A large number of radial grooves each having a friction surface are arranged on the inner surface of the disk, and the wind selection part of the chamber escape is connected to an exhaust fan through a discharge window, and is formed at the lower part of the chamber escape. With a configuration in which a brown rice discharge port and a moisture detector that connects each of a pair of metal rolls mounted on parallel shafts to an electric circuit are formed in a continuous process, unhulled rice supplied from the paddy feed port of the fixed disk is distributed to the inner surface of both disks. This system allows the rice to flow in and removes the unhulled rice using the rotational force of a rotating disk and a large number of grooves with friction surfaces.The unhulled rice is completely removed by contact friction from the center of both disks toward the outer periphery in the radial direction. By removing the effect,
The purpose of the present invention is to provide a brown rice moisture detection device that can accurately measure the moisture content of brown rice by supplying completely removed brown rice that has been air-selected by an exhaust fan to both metal rolls.

The present invention will be explained with reference to embodiment figures. Figure 1,
In Fig. 2, a fixed disk 2 and a rotating disk 3 with a paddy feed port 1 in the center are installed facing each other in a dechamber 4 with an appropriate interval between them, and the inside surfaces of both disks 2 and 3 are , a large number of radial grooves 22 . . . having friction surfaces 5, 5 are provided. The wind selection section formed in the escape room 4 communicates an air exhaust window 6 provided on one side wall with an exhaust fan 7 outside the machine, and connects a ventilation window 8 provided on the other side wall to the lower end of the escape room 4. The room is removed by the wind inhaled through the brown rice outlet 9 provided.
It is formed so that the removed matter inside is screened out and the selected brown rice is discharged from the discharge port 9. A pair of metal rolls 10 and 11 are mounted with parallel shafts facing each other in the lower part of the chamber release 4, and the brown rice is caught between the chevron veins 12A and 12B provided on the circumferential surface of both metal rolls 10 and 11. The main shaft 13 and the sub-shaft 14 are respectively attached to the main shaft 13 and the sub-shaft 14 so as to rotate in opposite directions while the sub-shaft 14 is always kept parallel to the main shaft 13 and can be adjusted to move far and near. . Further, each of the metal rolls 10 and 11 is connected to an electric circuit 15 to form a moisture detector 16, and 17 is a grain collecting tank for discharging crushed grains from the moisture detector 16.

The moisture detection device in each of the above configurations is
It is attached to a paddy tank 18 such as a dryer, and the side wall window 19 provided in the tank 18 and the paddy supply port 1 of the detection device are connected through a flow path 20, and the paddy flowing continuously or intermittently in the paddy tank 18 is connected. It is formed so that the rice grains flow down from the layer and are de-aired to detect and display the moisture value of whole grain brown rice grains. 21 is a meter for displaying the measured moisture value.

With the above-mentioned configuration, when the paddy grains are allowed to flow down from the side wall window 19 of the paddy tank 18 through the flow path 20 to the escape chamber 4, the paddy grains flow from the paddy feed port 1 of the fixed disc 2 to both discs 2,
3, the rice grains are brought into contact with the friction surfaces 5 of the radial grooves 22 provided on both disc surfaces and the rotational force of the rotating disc 3, and the grains are removed from the action. The clothes are removed in the wind selection section of Breakout 4.
The suction force of the exhaust fan 7 causes air from outside the machine to flow in from the air supply window 8 through the brown rice discharge port 9, absorbing impurities such as rice husks in the room, and exhausting them outside the machine from the ventilation window 6. The brown rice flows down to the moisture detector 16, and the chevron veins 12 of both metal rolls 10 and 11 placed opposite each other flow down to the moisture detector 16.
A and 12B are engaged with each other to compress or crush the grain, and the electrical resistance value of the grain between both rolls 10 and 11 is successively measured in an electric circuit 15, and the measured value is displayed on a display meter 21.

As described above, the moisture detection device of the present invention has a large number of radial grooves each having a friction surface arranged on the inner surface of one or both of the fixed disk and the rotating disk that are set to face each other inside the escape chamber. As a result, the unhulled rice flowing into the inner surfaces of the fixed disk and the friction disk is released by the rotational force of the rotating disk and the many grooves having friction surfaces, and the unhulled rice flows from the center of both disks in the radial direction. Since contact friction is applied toward the outer periphery and complete removal is performed, the unhulled rice that has been air-sorted by the exhaust fan and the completely removed brown rice that does not contain any rice husks is supplied between the two metal rolls of the moisture detector.
Since the electrical resistance value of the grains during this period is measured as the moisture value using an electric circuit, it is possible to accurately measure the moisture content of the brown rice and perform high-precision moisture measurement.

The present invention can be applied to an automatic stop control that stops the heat source or operation of the dryer when the grain is dried to a predetermined moisture content by equipping the dryer with the present invention. Also, both discs of the removal device may be used by rotating in opposite directions.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIG. 1 is a front sectional view of the device, FIG. 2 is a side sectional view thereof, and FIG. 3 is an enlarged plan sectional view of the moisture detector. 1... Rice feed port, 2... Fixed disk, 3... Rotating disk, 4... Room escape, 5... Friction surface, 6... Ventilation window, 7... Ventilation fan, 8... Ventilation window, 9... Brown rice outlet, 10, 11... Metal roll, 12A, 12
B...Chevron vein striations, 13...main axis, 14...minor axis,
15... Electric circuit, 16... Moisture detector, 17...
...Husk collection tank, 18...Paddy tank, 1...Side wall window, 2
0...Flow path, 21...Display meter, 22...
groove.

Claims (1)

[Claims] 1. The wind sorting part of the ventilator, which has a fixed disk with a rice feeding port in the center and a rotating disk installed inside facing each other, is connected to an exhaust fan through an exhaust window, and brown rice is formed in the lower part of the ventilator. A brown rice moisture detection device that includes a discharge port and a moisture detector in which each of a pair of metal rolls mounted on parallel shafts is connected to an electric circuit in a continuous process, wherein one or both of the fixed disk and the rotating disk A brown rice moisture detection device characterized in that a large number of radial grooves each having a friction surface are arranged on the inner surface of the brown rice.