JPH059642Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a single-grain dryer that is installed in a grain dryer that dries grains while circulating the inside of the machine, and that measures the moisture content of grains during drying. Concerning improvements to moisture meters.

(Prior Art) This type of moisture meter is attached to, for example, the outer wall of an elevator in a grain dryer, and the grains spilling from the bucket of the elevator are guided to the moisture meter.

A portion of the grains guided to the moisture meter is configured to be accommodated in a conveying groove formed in a spiral shape on the outer periphery of a feed roller serving as a conveying means.

Since the feed roller rotates during moisture measurement, the grains accommodated in the conveyance groove are guided by the guide plate and conveyed in the axial direction of the feed roller.

A grain that has been conveyed to the end of the feed roller falls from that end onto a pair of electrode rollers for measurement, and when a grain passes between these electrodes, the difference between the two electrode rollers is Since the resistance of
The resistance change is extracted as the water voltage.

In this way, the grains transported by the feed roller fall onto the electrode roller one by one at predetermined time intervals.

(Problem to be solved by the invention) By the way, in addition to the above-mentioned conveyance groove, a concave groove for dropping unnecessary grains is formed in parallel to the conveyance groove in the terminal half of the feed roller. Two parallel edges are formed on both side edges of the conveying groove.

Therefore, the feed roller not only fits and accommodates one grain in the conveyance groove and conveys it toward the end,
Often, one other grain on the edge is also carried away. In that case, two grains will be transported by the feed roller at the same time and fall onto the electrode roller at the same time.
There was a drawback that it was not possible to take out one grain necessary for moisture measurement, which adversely affected the accuracy of moisture measurement.

Particularly in the case of thin grains or small grains, the above-mentioned phenomenon is remarkable and has become a big problem.

Therefore, in order to solve the above-mentioned drawbacks, the present invention prevents unnecessary grains from being transported at the edges of the transport groove in the feed roller, improves the transportability of each grain, and improves the accuracy of moisture measurement. There is a particular thing.

(Means for Solving the Problems) In order to achieve the above object, the present invention forms a spiral conveying groove on the outer periphery, and a recess parallel to the conveying groove near the end of the outer periphery. A rotatable feed roller with grooves formed therein is arranged horizontally, a guide plate is brought into contact with one side of the outer periphery of the feed roller, and a pair of electrode rollers is arranged below the terminal end of the feed roller. A notch is provided at the edge of a conveying groove formed near the terminal end.

(Function) In the present invention, in the portion near the end of the feed roller 4, as shown by the solid line in FIG. Grains that ride on the edge 12A of the groove 10 and are conveyed between the guide plate 5 and the grains often coexist.

In such a case, as the feed roller 4 rotates, when the notch 13 reaches and leaves the guide plate 5, only the grains on the edge 12A are removed.
It falls from the notch 13 as shown by the dotted line in FIG.

(Embodiment) FIGS. 7 and 8 each show an example in which a single-grain moisture meter according to an embodiment of the present invention is attached to a part of the elevator of a grain dryer.

In the figure, reference numeral 1 denotes a supply hopper, and its lower end outlet is seen above near the starting end of the feed roller 4 of the moisture meter 3 in order to guide the grains falling from the bucket of the elevator 2 to the moisture meter 3.

A guide plate 5 is brought into contact with one side of the feed roller 4 in an inclined manner along its axial direction, and a pair of electrode rollers 6 for measurement is arranged below the terminal end of the feed roller 4 . Reference numeral 7 designates a conveyance path for returning grains and the like to the elevator 2 after moisture measurement has been completed using electrode rollers 6, 6, and reference numeral 8 designates a motor that drives the feed rollers 4 and electrode rollers 6.

As shown in FIGS. 1 and 2, the feed roller 4 feeds grains onto the outer periphery of a cylinder connected to a rotating shaft 9 rotatably supported by a boss 16 fixed to a machine wall 15. Conveying groove 10 with a width that can accommodate grain fitting
is formed in a spiral shape, and a concave groove 11 is formed near the terminal end of the feed roller 4 in parallel with the conveyance groove 10 to allow unnecessary grains to fall. Also,
A brush 18 is provided within the groove 11.

A part of the edge 12A at one end of the conveyance groove 10 has a
As will be described later, a notch 13 is formed for allowing grains conveyed between the edge 12A and the guide plate 5 to fall into the groove 11. As shown in FIGS. 4 and 5, this notch 13 is formed by left and right inclined surfaces 13A, 13B, and a valley 13C thereof.
is inclined downward toward the groove 11.

Note that the notch 13 is shown in FIG. 3 instead of in FIG.
As shown in the figure, the other edge 12B of the conveying groove 10
It may be provided on a part of the conveying groove 10, or it may be provided on a part of both edges 12A, 12B of the conveying groove 10.

Further, on the outer peripheral surface of the feed roller 4 near the starting end, a portion of the feed roller 4 near the starting end and a guide plate 5 are provided.
A concave groove 14 is provided parallel to the shaft for discharging straw waste, plaster, rice, etc. that get stuck between the shaft and the shaft. Groove 14
are preferably provided at positions facing the axis of the feed roller, as shown in FIG.

Furthermore, a protrusion 17 made of an elastic material such as rubber is attached to the end face of the starting end of the feed roller 4. With this protrusion 17, when the feed roller 4 rotates, it is possible to remove straw waste and limestone accumulated between the upper part of the boss 16 and the machine wall 15. Note that the protrusion 17 is connected to the feed roller 4 as shown in the figure.
Although it may be attached to the end face of the starting end, it goes without saying that it may be formed integrally with the end face of the starting end.

In such a configuration, supply hopper 1
When the drying grains are supplied between the part near the starting end of the feed roller 4 and the guide plate 5, the grains fitted and accommodated in the conveyance groove 10 are rotated by the rotation of the feed roller 4. Accordingly, the paper is conveyed toward the terminal end of the feed roller 4 between the guide plate 5 and the guide plate 5 . Then, feed roller 4
One grain that has reached the end of the electrode rollers 6, 6
After falling upward and passing through the electrode rollers 6, 6, it is returned to the elevator 2 via the conveyance path 7.

Meanwhile, in the portion near the end of the feed roller 4 (see Fig. 1), as shown by the solid line in Fig. 5, grains contained in the conveying groove 10 formed near the end and conveyed between the feed roller 4 and the guide plate 5 often coexist with grains resting on the edge 12A of the conveying groove 10 and conveyed between the feed roller 4 and the guide plate 5. This is noticeable when the grains are relatively small in thickness and size.

In such a case, as the feed roller 4 rotates, when the notch 13 reaches and leaves the guide plate 5, only the grains resting on the edge 12A are removed as shown by the dotted line in FIG. After falling into the notch 13, it falls through the groove 11 and is returned into the elevator 2. Therefore, only one grain falls from the end of the feed roller 4 onto the electrode rollers 6, 6.

(Effect of the invention) As explained above, according to the invention, a notch is provided at the edge of the conveying groove formed on the outer periphery of the feed roller, so that the grains riding on the edge are caused to fall from the notch. Therefore, regardless of the size and shape of the grain, only one grain can be reliably taken out and dropped onto the electrode roller, thereby significantly improving the accuracy of moisture measurement.

In addition, according to the present invention, since a notch is provided at the edge of the conveying groove, it is possible to increase the dimensional tolerance when manufacturing the conveying groove compared to the conventional method, which reduces the overall manufacturing cost. is reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view of another embodiment of the present invention.
Fig. 4 is a diagram showing the main parts of the embodiment of the present invention, Fig. 5 is a sectional view thereof, Fig. 6 is a side view of the embodiment of the invention, and Fig. 7 is a diagram showing the embodiment of the present invention as a lift of a grain dryer. FIG. 8 is a side view showing the state in which the device is attached to the device, and FIG. 8 is a front view thereof. 4 is a feed roller, 5 is a guide plate, 6 is an electrode roller, 10 is a conveyance groove, 11 is a groove, 12A, 12B
is the edge, and 13 is the notch.

Claims (1)

[Claims for Utility Model Registration] In addition to forming a spiral conveying groove on the outer periphery,
A rotatable feed roller with a concave groove formed in parallel with the conveyance groove is arranged horizontally near the terminal end of the outer periphery, and a guide plate is brought into contact with one side of the outer periphery of the feed roller. A grain conveying device for a moisture meter, comprising: a pair of electrode rollers disposed below the terminal end; and a notch provided at the edge of a conveying groove formed near the terminal end of the feed roller.