JPS6124923Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic moisture meter that detects grain moisture based on changes in capacitance, for example, by improving the regulation of the amount of discharge from a screw for discharging grains, etc.

This type of automatic moisture meter needs to eliminate variations in measured values by keeping the density of grains in the detection part constant, but conventional ones simply provide an overflow channel. Therefore, there was not sufficient density regulation ability.

The present invention improves the density regulating ability of this automatic moisture meter.

The present invention will be explained based on an illustrated embodiment.
In FIG. 1, reference numeral 1 indicates an automatic moisture meter attached to the back wall 2 of the dryer. The automatic moisture meter 1 is housed in a case 5 having an intake port 3 at the top and a discharge port 4 at the bottom. A driven discharge screw 9 is mounted horizontally, and a partition wall 10 defines a measurement chamber 12 in which a detection section 11 is located and an overflow channel 13. The discharge screw 9 is provided with a discharge amount regulating plate 14 at the transfer start end A and the transfer end C. Note that the intake port 3 enters into the dryer chamber when the moisture meter is attached, and the outlet port 4 communicates with the grain circulation path 15 of the dryer.

As shown in FIG. 2, the emission control plate 14
With respect to the mounting piece 16, the regulating plate 14 has a spring-equipped hinge structure whose base is urged upward by a coil spring, and has a notch 17 formed at the upper end through which the discharge screw blade passes. Two of the regulating plates 14 are disposed so as to face the transfer start end A of the discharge screw 9 in the lateral direction, and one plate is disposed from below at the transfer end C, facing the transfer direction and biased in the opposite direction. There is.

In this moisture meter 1, the motor 6 switches on the supply screw 7 at regular intervals while the dryer is operating.
With this rotation, the detection grains are introduced from the intake port 3 to fill the measurement chamber. At the same time, the discharge screw 9 also rotates to guide the grains in the measuring chamber to the discharge port 4, but since the feeding capacity of the supply screw 7 is superior, the measuring chamber 12 is always filled with grains, and the discharge screw 9 constantly discharges grains. Move from top to bottom according to the amount. The grains which do not enter the measuring chamber 12 are sent via the overflow channel 13 directly from the outlet 4 to the circuit 15 to the dryer.

The grains moving through the measurement chamber 12 are
1, and the grain moisture is detected from the capacitance corresponding to the moisture of the passing grain.

The regulating plate 14 regulates the amount of grains (inside the measuring chamber) taken in, that is, the amount of discharged, at points A, B, and C of the discharge screw 9. In other words, if there is no regulation plate 14 in terms of the conveyance function of the screw, the amount of new grains taken in will be highest at point A, almost none at point B, and at point C, the amount of new grains taken in will increase due to natural falling to the discharge port 4. However, the regulating plate scrapes off a portion of the newly taken in grains at point A, provides room for new grains to be taken in at point B, and prevents natural fall at point C to prevent an increase in the newly taken in grains. , discharge screw 9
This solves the above-mentioned inconveniences in transportation when a single unit is used.

In this case, since the regulating plate 14 of the present invention has a spring-loaded hinge structure with respect to the mounting plate 16, it is sensitive to the moving pressure caused by various conditions of grains, and the moving pressure is small and the grains are fed in large quantities. Strong against
In the opposite case, emissions are weakly regulated and the above A, B,
This regulates the amount of new intake at point C, that is, the amount of emissions.

The regulating plate 14 of the present invention has a spring-loaded hinge structure with respect to the mounting piece 16, making it sensitive to the condition of grains, so that the discharge function at the points A, B, and C of the discharge screw 9 is uniformized, and the detection part The above three requirements of grain movement with respect to the electrode plate are satisfied and the accuracy of moisture detection is improved.

In addition, as an example, an example in which the discharge screw is provided with regulating plates at two locations, the transfer start end and the transfer end, has been described, but in the present invention, the structure of the discharge amount regulating plate itself has the above effect. However, it can be provided only at the transfer end portion C.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a front view in section, and FIG. 2 being a perspective view of the main parts. 1...Automatic moisture meter, 7...Take-out screw,
9...Ejection screw, 11...Detection section, 12...
...Moisture measurement room, 14...Emission control board.

Claims (1)

[Claims for Utility Model Registration] (1) A supply screw is provided horizontally in the upper part and a discharge screw is provided in the lower part, a detection section is provided between them to form a moisture measuring chamber, and the discharge screw is connected from the transfer start end to the transfer end. An automatic moisture meter equipped with a discharge rate regulating plate, characterized in that the discharge rate regulating plate is biased by a spring in a direction opposite to the transfer direction. (2) An automatic moisture meter equipped with a discharge rate regulating plate as set forth in claim 1 of the utility model registration claim, wherein the discharge rate regulating plate is provided at a transfer start end and a transfer end of the discharge screw, respectively.