JPS6314778B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge device for preventing grains supplied to a moisture meter from remaining.

This type of moisture measuring device attaches a measurement frame to the grain tank of a grain dryer, etc., collects the grains in the tank within the frame into a container for moisture measurement, and then In addition to measuring the moisture content, the grain density is also measured, and the density-corrected real moisture value is displayed on the display. Generally, the grains supplied to the grain vat are contaminated with a large amount of water content such as branch grains, immature grains, straw waste, dust, etc., as well as a large amount of contaminants from hybrids that undergo catabolic metamorphosis. However, in the wind selection process, a small number of weighing impurities mixed into the wind-sorted paddy may easily adhere to the grain, and the operating mechanism of the attached weighing device may be affected. In addition, during the grain removal action of the container, a considerable amount of residue may be generated in the container, which often impedes accurate moisture measurement of the grains to be measured next time. It has defects.

The present invention is an improvement in order to eliminate the above-mentioned drawbacks, and the grain flow path between the grain conveying gutter and the moisture measuring container installed at the bottom is formed in the wind sorting device. and forming a moisture measuring device by connecting a weighing device installed in the machine frame and the moisture measuring container with a moisture sensor attached to the inner wall surface to a control circuit,
One end of the discharge valve is shaft-inserted into the lower side wall of the moisture measuring container, a valve cam plate is connected to a rotating shaft of an electric motor mounted on the machine frame, and the discharge valve and the valve cam plate are engaged.・In addition to interconnecting each other so that they can be separated freely,
A limit switch provided on the valve cam plate and the electric motor are connected via an electric circuit so that the discharge valve is repeatedly opened and closed a plurality of times. In the process of causing the grains to flow down from the end face under the action of vibration,
The wind sorting action of the wind sorting device removes immature grains and branched grains mixed into the grain and removes them from the machine, and the sorted grains that flow into the moisture measuring container control the signals of the moisture sensor and weighing device. The valve cam plate is actuated via the electric motor by the moisture measurement signal from the control circuit, and the valve cam plate opens the discharge valve to discharge the grains from the moisture measurement container. By applying shock to the weighing device and the moisture measurement container by repeatedly opening and closing the valve multiple times to completely discharge residual grains and impurities, and then closing the discharge valve, the moisture measurement container To provide a device capable of continuously supplying new grains without residual grains in a container, and capable of highly accurate moisture measurement using a moisture sensor in addition to always operating a weighing device in the correct condition. With the goal.

Embodiments of the present invention will be described with reference to FIGS. 1 to 5. 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 equipped with a grain conveying gutter 6 is mounted, and an air intake window 7 is provided on the side wall of the machine frame 1 to which the fixing plate 4 is fixed, and an air exhaust window 8 is provided on the side wall of the machine frame 1 on the opposite side. A moisture measuring container 12 is installed below the gutter 6 via a grain board 11, and an exhaust fan 9 is attached to the outside of the machine frame 1 provided with an air intake window 8. A grain flow path 10 is formed in the wind selection device through a suction window 8 and a suction path 12, and a grain flow path 10 between the grain conveying gutter 6 and the moisture measuring container 12 is formed in the wind selection device. There is.

The lower part of the inner wall surface 11A of the grain flow board 11 is communicated with the moisture measuring container 12, and the outer wall surface 11 of the flow grain board 11 is connected to the moisture measuring container 12.
An immature grain discharge path 34 is formed below the grain discharging port 3.
is connected to. A discharge valve 13 is installed at the bottom of a moisture measuring container 12 with a moisture sensor 14 attached to the inner wall surface.
The moisture measuring container 12 is connected to a weighing device 15 provided at the bottom of the fixed plate 4, and the weighing device 15 has a fixed frame 16 with a hanging rod on the upper side and a movable frame with horizontal rods on the side. In addition to installing frame 17, fixed frame 1
6. The movable frame 17 is connected by connecting rods 18, 18 to form the movable frame 17 so as to be vertically movable, and the suspension rod of the fixed frame 16 and the movable frame 17 are connected by a spring scale 19, The sensor 14 and the weighing device 15 are connected via a control circuit 31, and the output side of the control circuit 31 is connected to a display 35 to form a moisture measuring device.

Next, according to FIGS. 2 to 4, the moisture measuring container 1 is
2, the relationship between the discharge valve 13 and the cam mechanism will be explained. Side plates 21, 21 are provided on both sides of the discharge plate 20.
A support shaft 2 is provided and supported at one end of the discharge plate 20.
2 is shaft-inserted into the lower side wall of the moisture measuring container 12 to form an inclined discharge valve 13. A protruding piece 23 for the cam is provided on one side of the side plate 21 of the discharge valve 13, and the other side of the elastic device 24, whose one side is fixed to the moisture measuring container 12, is fixed to the other side of the side plate 21. An electric motor 25 is attached to one surface of the machine frame on the side of the side plate 21 provided with the projecting piece 23, and the electric motor 2 is made to protrude into the machine frame 1.
A valve cam plate 27 is pivotally attached to the rotating shaft 26 of the valve cam plate 27, and the valve cam plate 27 and the cam projection piece 23 are connected to each other so as to be able to engage and separate. A switch cam plate 29 that comes into contact with a limit switch 28 fixed to the inner surface of the machine frame 1 is pivotally attached to the rotating shaft 25.

FIG. 5 shows the electrical circuit 3 for the switch of the motor 25.
0, a first opening/closing contact 32 operated by a signal from a control circuit 31 is provided on the bus line T, and a second opening/closing contact 33 operated by the limit switch 28 is provided in parallel therewith.

Since it has the above-mentioned configuration, the grain conveying gutter 6 from the grain tank
The sample grains (hulls) supplied to the container flow down from the gutter end of the grain conveying gutter 6 to the moisture measuring container 12 due to the vibration action of the vibrating device 5. By the rotation of ) falls on the inner wall surface 11A of the grain board 11, slides down the board surface, and flows down into the moisture measuring container 12, while immature grains and branch stalk grains fall on the outer wall surface 11B of the grain board, slide and become immature grains. Dust, straw, etc. are discharged to the outside of the machine by the exhaust fan 9. The capacitance of the grains in the moisture measuring container 12 is measured by the moisture sensor 14, and the signal is input to the control circuit 31, where the grain density measurement signal from the weighing device 15 is input. The actual moisture value is corrected by the following and displayed on the display 35. Then, in response to a signal from the control circuit 31, the first contact 32 of the switch electric circuit 30 is closed and the electric motor 25 is rotated. The valve cam plate 27 is rotated by the rotation of the electric motor 25, and the discharge valve 13 is opened, and the grains in the moisture measuring container 12 are discharged.
The moisture measuring container 12 is closed while applying an impact to the moisture measuring container 12 due to its elasticity. During this period, the switch cam plate 29 rotates in parallel to contact the limit switch 28 and close the second contact 33 of the electric circuit 30, so that the electric motor 25 repeatedly continues to operate the discharge valve 13.
Since the moisture measuring container 12 is opened and closed again, the residue in the moisture measuring container 12 is completely discharged by the repeated opening and closing operation of the discharge valve 13, and the moisture measuring container 12 or the weighing device 15 is removed by several impacts. Light contaminants adhering to or adhering to the operating mechanism of each are removed.

As described above, according to the present invention, the valve cam plate is operated by the electric motor to engage and disengage the discharge valve, and the discharge valve is repeatedly opened and closed a plurality of times, and grains are removed from the moisture measuring container. At the same time, it provides an impulse to open and close the discharge valve to completely remove grains and foreign substances that have adhered to the weighing device and the moisture measuring container, so the weighing device can always operate normally. This has the effect that new grains are continuously supplied to the moisture measuring container, thereby ensuring error-free and highly accurate moisture measurement.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. Figure 1 is a side sectional view of this device, Figure 2 is an enlarged side view of the main parts, and Figure 3 is a side sectional view of the device.
The figure is an enlarged sectional view of the main part, FIG. 4 is an explanatory diagram of the cam mechanism, and FIG. 5 is an electric circuit of the main part. 1...Box-shaped machine frame, 2...Grain feeding port, 3...Grain discharging port, 4...
Fixed plate, 5... Vibration device, 6... Grain transport gutter, 7... Wind intake window, 8... Wind exhaust window, 9... Air exhaust machine, 10... Grain flow path, 11... Grain flow plate, 11A... Inner wall surface, 11
B... Outer wall surface, 12... Container for moisture measurement, 13... Discharge valve, 14... Moisture sensor, 15... Weighing device, 1
6...Fixed frame, 17...Moving frame, 18...Continuous rod, 19...
Spring balance, 20...Discharge plate, 21...Side plate, 22...Spin shaft, 23...Protruding piece for cam, 24...Bullet machine, 25...Electric motor, 26...Rotating shaft, 27...Cam plate for valve, 28...
Limit switch, 29...Cam plate for switch, 3
0... Electric circuit for switch, 31... Control circuit, 32
...first contact, 33...second contact, 34...immature grain discharge path, 35...indicator.

Claims (1)

[Claims] 1 A grain flow path between the grain conveying gutter and the moisture measuring container is formed in a wind sorting device, and a weighing device installed inside the machine frame and a discharge valve at the bottom are provided for the moisture measuring device. In a device in which a moisture sensor provided in a container and a weighing device are connected to a control circuit to form a moisture measuring device, a supporting shaft pivotally supported at one end of the discharge valve to which a bullet is attached is connected to the moisture measuring container. A valve cam plate is connected to a rotating shaft of an electric motor mounted on the side wall surface of the machine frame, and the discharge valve and the valve cam plate are connected to each other so as to be freely engaged and separated. . A discharge device for a moisture meter, characterized in that a limit switch provided on the valve cam plate and the electric motor are connected via an electric circuit so as to repeatedly open and close the discharge valve a plurality of times.