JPS6213000Y2 - - Google Patents

Description

[Detailed description of the invention] This invention detects dust and moisture contained in the grains by vibration after the grains are stored in a sample storage box at any time while being transported by a transporter in a circulation system. The present invention relates to an automatic moisture detection device that is capable of automatically measuring accurate moisture by keeping grains at a constant distance from the surface of the vessel and by keeping the density of grain piled constant.

When measuring the moisture content of circulating grain at any time, even if the moisture content of the grain is constant, it is detected that the shell material is not maintained at a constant density. It is well known that moisture measurements automatically change due to changes.

Therefore, in order to substantially uniformize the piled density of the grains, a technique is also known in which a vibration effect is applied to the grains being transported to make the density uniform. By the way, when the object to be detected is grain, etc., the grain contains a lot of dust of various sizes, and large dust passes over the measurement surface while being mixed with the grain, and small dust is affected by vibration. The dust is deposited on a vibrating detection surface that is separated from the grains, and the moisture measurement work is carried out with the grains positioned above the dust accumulation layer.

Therefore, in the case of conventional devices of this kind, even if the deposition density is made uniform, the measured value is not of the grain itself, but of the mixture of grain and dust, and it is necessary to obtain a more accurate moisture value. A major drawback was that it could not be measured.

In view of the above, the present invention has been developed by attaching a sample storage box to one side of the circulation transfer machine body that communicates with the inside of the circulation transfer machine body through an input window and a discharge window that are alternately opened and closed by a switching shutter. A part of the grain being transported is stored at any time, and the stored grain is tilted downward toward the discharge window at the bottom of the sample storage box.
What's more, the vibration of a diaphragm with a moisture detector on its surface causes large dust particles to float to the top of the grain, while small dust particles fall along the diaphragm through a discharge window into the main body of the circulation conveyor, where moisture is detected. Automatic moisture detection that eliminates dust accumulation on the surface of the container, equalizes the density of grain accumulation, and automatically measures the moisture content of the grain itself with higher accuracy. The present invention is intended to provide an apparatus, and the configuration of the apparatus according to the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings.

In the drawing, reference numeral 1 denotes the main body of a circulation conveyor for circulating grain, and in the embodiment of the present invention, a rotating belt 2 with a large number of buckets 3 attached at equal intervals is housed in a suspended manner. The elevator body is shown. On one side of the elevator main body 1, a loading window 4 is opened upward and a discharge window 5 is opened downwardly at appropriate intervals.
At the opening position of the elevator body 1, a sample storage box 6 whose side facing the elevator body 1 is open can be freely removed.
Attach it to. The input window 4 and the discharge window 5, which communicate the interior of the elevator main body 1 and the interior of the sample storage box 6, are alternately opened and closed by a switching shutter 7 that moves up and down. The movement is composed of a rotating disk 8 rotated by a motor or the like, and a rod 9 having one end pivotally connected to the eccentric position of the rotating disk 8 and the other end pivotally connecting to the switching shutter 7. Position signal switches 10 and 11 are disposed on the left and right positions of the rotary disk 8, respectively, for outputting signals for displaying the position of the switching shutter 7. A signal is emitted when it engages with a recess 12 formed in the circumferential surface of the recess 12 . Therefore, when the switch 10 engages with the recess 12, the switching shutter 7 indicates that the discharge window 5 is closed, and when the switch 11 engages with the recess 12, the input window 4 is closed by the switching shutter 7. A signal indicates that the vehicle is present.

A diaphragm 13 is connected to the bottom of the sample storage box 6 via a bellows-shaped connecting member 15 and is inclined downward toward the discharge window 5 and has a moisture detector 14 on its surface. 16 is a vibrator mounted on the back side of the diaphragm 13. The moisture detector 14 installed on the diaphragm 13 can be of any type, such as a capacitive type, an electric resistance type, or a microwave type, but a capacitive type is shown in the embodiment of the present invention. . That is, on the upper surface of the diaphragm 13, there is a disk-shaped central electrode 17 and an annular peripheral electrode 1 located around the disk-shaped central electrode 17.
8 are attached, and both are connected to the input end of the capacitance meter 20 via a conductive wire 19. This capacity meter 2
0 is an oscillation circuit that can generate an oscillation output with a frequency corresponding to the dielectric constant between the center electrode 17 and the surrounding electrode 18, and a pointer of the meter 21 that can be caused to swing in response to the frequency of this oscillation circuit. It has an instruction circuit that can perform The above-mentioned circulating carrier 1
may be a conveyor or a chute outside the elevator main body, and the amplitude of the diaphragm 13 can be changed at any time using a thyristor triax or a transformer.

Next, the effect of the present invention will be explained in the case where it is installed on one side of the elevator main body 1.

Now, if the rotary belt 2 is rotated in the direction of the arrow with the discharge window 5 closed by the switching shutter 7, the grains will be lifted by a large number of buckets 3, and the grain will be lifted at the same time as the circulating conveyance work. A part of the grain that has fallen from the bucket 3 during the feeding process is thrown into the sample storage box 6 through the charging window 4. When a certain amount of grain is loaded into the sample storage box 6 in this manner, the vibrator 16 is activated and at the same time the moisture detector 14 is connected to the input end of the capacitance meter 20. Then, the grains placed in the sample storage box 6 are vibrated by the vibrating action of the diaphragm 13, and the large dust particles mixed in the grains are lifted upward by the specific gravity sorting action and moved away from the surface of the diaphragm 13. Further, the small dust particles that tend to accumulate downward are moved along the inclined surface of the diaphragm 13 toward the discharge window 5 side by the vibration effect, and at the same time, the grains are made to have a uniform accumulation density by the vibration effect. Therefore, the grains deposited on the upper surface of the diaphragm 13 have a uniform density and do not contain any dust, so that the moisture detector 14 can more accurately measure the moisture content of the grains themselves. After the moisture content of the grains has been measured by the above action, the switching shutter 7 may be used to open the discharge window 5, the input window 4 may be closed, and the grains may be returned to the interior of the circulating conveyor body 1 by the vibration action.

In addition, when measuring the moisture content, it is better to stop the diaphragm 13 so that the pointer of the meter 21 swings less and can be read more effectively.

In short, the present invention has a sample storage box 6 on one side of the circulation conveyor body 1 that communicates with the inside of the circulation conveyor body 1 through an input window 4 and an ejection window 5 that are alternately opened and closed by a switching shutter 7. A diaphragm 13 is connected to the bottom of the sample storage box 6, which is inclined downward toward the discharge window 5, and has a moisture detector 14 on its surface. It is possible to accurately accommodate the grains in the sample storage box 6 by switching the switching shutter 7, and even if the stored grains contain a lot of dust of different sizes, the dust can be removed from the diaphragm 13. Due to the vibration effect and the inclined surface of the diaphragm 13, grains are kept away from the moisture detection surface without being deposited on the diaphragm 13, and at the same time, the density of grain accumulation is made uniform, thereby improving the accuracy of moisture measurement of the grain itself. Not only can the grain be discharged accurately, but also the grain can be quickly discharged along the inclined diaphragm 13 due to the vibration effect, and as a result, the moisture content of the grain can be automatically measured at any time. Make the most of your efforts.

In addition, in the device of the present invention, the same effect can be obtained even if the entire feed storage box 6 is vibrated.

[Brief explanation of the drawing]

The drawing shows one embodiment of the device of the present invention, and is a longitudinal sectional front view with a portion cut away. 1... Circulation conveyor body, 4... Loading window, 5...
...Discharge window, 6...Sample storage box, 7...Switching shutter, 13...Vibration plate, 14...Moisture detector.

Claims (1)

[Scope of utility model registration request] A sample storage box that communicates with the inside of the circulation transfer machine body through an input window and a discharge window that are alternately opened and closed by a switching shutter is installed on one side of the circulation transfer machine body, and the bottom of the sample storage box is An automatic moisture detection device characterized by having a diaphragm that slopes downward toward the discharge window and has a moisture detector on its surface.