JPH0218475Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a grain rationing device that can spread grain evenly and without gaps within the main body of the dryer in a grain dryer that circulates and dries the grain.

Prior Art A grain dryer that circulates and dries grain through ventilation has a carry-in gutter installed horizontally in the longitudinal direction of the top of the dryer in order to spread the grain evenly into the main body of the dryer. As described in Publication No. 75890, it was known before the filing of this application. In addition, a grain distribution device for a grain dryer that was devised to fit grain without any gaps inside the dryer body was developed, for example, in 1983.
It is described in Japanese Utility Model Application Publication No. 172989 and Japanese Utility Model Application Publication No. 60-4897.

Problems to be Solved by the Invention By the way, in the grain distributing device described in the above-mentioned Japanese Utility Model Publication No. 172989/1989, when the dryer body is filled with grains to almost full capacity, the grain receiving trough It is now possible to flip the grain downward and continue to fill the gap with grain to fill the gap at the top, but the reversing operation of the grain receiving trough is delayed when the grain distribution pitch reaches its full capacity. However, this became impossible due to the accumulated grain, and there was a drawback that the grain could not be filled without any gaps.

Therefore, the present invention reliably detects the full state at the time of dispensing and automatically opens the bottom plate of the grain distributing conveyor, and also reliably detects that the upper gap is filled with grain. In addition to stopping loading, the bottom plate of the grain distribution conveyor can be automatically closed when the volume of grain decreases to a certain level due to the progress of drying, and the grain can be loaded efficiently into the dryer body without any gaps. It is an object of the present invention to provide a grain rationing device for a grain dryer that can perform drying work smoothly.

Means for Solving the Problems The technical problem of the present invention is to achieve the above object, and the technical means for this purpose are constructed as follows.

That is, the grain rationing device in the grain dryer according to the present invention has a bottom plate that can be opened and closed in the longitudinal direction of the top inside the dryer main body, the starting end of which is connected to the elevator, and which forms a grain distribution and fall port. In a dryer with a horizontally installed conveyor, there is a
A first full switch that detects the full state at the time of dispensing and a second full switch that detects that the upper gap is filled with grain are provided, and the first full switch detects when the first full switch is full. The bottom plate of the grain distribution conveyor is opened by the amount sensing operation, the grain filling stop signal is sent by the second full quantity switch's full quantity sensing operation, and the bottom plate of the grain distribution conveyor is closed by the return operation of the first full quantity switch. It is characterized by having functions.

Function The technical means of the present invention works as follows (see drawings).

Before starting drying work, dryer main unit 1
The bottom plate 5 of the grain distribution conveyor 2 is closed when grain is placed inside. Therefore, the grains supplied from the elevator 3 to the grain conveyor 2 are distributed and piled up almost evenly. Then, the top of the grain to be deposited is the first
When the full quantity switch 9 is reached, the bottom plate 5 of the grain distribution conveyor 2 is automatically opened by the full quantity sensing operation of the first full quantity switch 9, and the upper gap is successively filled by continuing to load the grain. When the upper gap is filled with grain, the second full amount switch 10 is activated, and a grain filling stop signal is sent out in response to the full amount sensing operation. Note that this signal may be used to issue an alarm or to automatically stop grain loading.

As described above, when the grains are filled without any gaps in the dryer main body 1 and drying is started, the volume of the grains gradually decreases as the drying progresses. Then, when the first full quantity switch 9 is reset, the bottom plate 5 of the grain distribution conveyor 10 is closed, so that the grains are thereafter evenly circulated within the dryer main body 1 and uniformly dried. It should be noted that after the return operation of the first full-fill switch 9,
When a certain period of time has elapsed, the bottom plate 5 of the grain distribution conveyor 2
If it is closed, the height of the grain accumulation layer is such that it does not come into contact with the bottom plate 5, so the operation of closing the bottom plate 5 becomes reliable and smooth.

Embodiment A preferred embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 1 is a dryer main body, and a grain conveyor 2 is installed horizontally in the longitudinal direction of the top of the dryer main body. It is connected to the elevator 3. The grain distribution conveyor 2 stores and pivots a conveyance screw 4 therein, and is equipped with a bottom plate 5 that can be opened and closed.The grain distribution and fall ports 6 are provided on the carry-in side and the terminal side of the bottom plate 5, respectively. , 7 are formed, and a plurality of grain dropping ports 8 are opened on both sides of the intermediate portion thereof. Note that the opening degree of the distribution drop port 6 on the carry-in side and the distribution drop port 7 on the terminal side is adjusted so that the transported grains are evenly distributed. Reference numeral 9 indicates a first full amount switch, and numeral 10 indicates a second full amount switch, which are disposed at the top of the dryer main body 1. Corresponding to the top of the layer, the second fill switch 10 is located so as to correspond to the upper gap. The opening/closing mechanism of the bottom plate 5 of the grain conveyor 2 is constructed as shown in FIG. That is, 11 is a bottom plate rotation shaft, and the bottom plate 5 is attached to the bottom plate rotation shaft via an arm 12. The bottom plate rotating shaft 11 is interlocked with a reversible motor 13 via a chain 14. 15 is a bottom plate closing limit switch, and 16 is a bottom plate opening limit switch.

In the configuration as described above, elevator 3
During transportation, the grains supplied to the grain distribution conveyor 2 are distributed through a distribution drop port 6 on the carry-in side and a distribution drop port 7 on the terminal side
The grains are evenly distributed from the grain drop openings 8 between them, fall into the dryer main body 1, and are spread almost evenly throughout. When the grain is in a full state as shown in FIG. 1 during this distribution tensioning, the first fullness switch 9 is closed, the bottom plate 5 of the grain distribution conveyor 2 is opened, and the grain distribution continues. As shown in the figure, grains are successively placed in the upper gap. When the upper gap is filled with grain, the second fill switch 10 is closed and a grain loading stop signal is sent, thereby issuing an alarm. After the start of drying, the volume of the grain gradually decreases as the drying progresses, but when the first full volume switch 9 is opened again, the bottom plate 5 of the grain distribution conveyor 2 is moved immediately or for a certain period of time set by a timer (for example, 1 hours) after which it will be closed. Thereafter, this state is maintained and the circulation drying is continued until the end of the drying. Therefore, the control device is controlled by the reversible motor 13 that drives the bottom plate 5 of the grain distribution conveyor 2, the bottom plate close limit switch 15, the bottom plate open limit switch 16, the first full quantity switch 9, the second full quantity switch 10, etc. It is configured. The above operation mode is shown in the flowchart of FIG.

Effects of the invention In short, the present invention has the above-mentioned technical means and works, so it reliably detects the full state at the time of distributing grain and automatically opens the bottom plate of the grain distribution conveyor. In addition, it reliably detects that the upper gap is filled with grain and stops loading the grain, and also automatically closes the bottom plate of the grain conveyor when the volume of grain decreases to a certain level due to the progress of drying. This has the effect of allowing the grain to be tightly packed inside the dryer main body, allowing for efficient and smooth drying work.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain rationing device in the grain dryer according to the present invention, and FIGS. 1 and 2 are vertical front views of the entire grain dryer, and FIG. 3 is a bottom plate of the grain conveyor. A block diagram of the opening/closing mechanism, and FIG. 4 is a flowchart of the main parts. 1...Dryer main body, 2...Grain distribution conveyor, 3...
...Elevator, 5...Bottom plate, 6, 7...Grain distribution and fall port, 9...First full level switch, 10...Second full level switch.

Claims (1)

[Scope of utility model registration request] In a dryer in which a grain distribution conveyor is installed horizontally in the longitudinal direction of the top inside the dryer main body, the starting end is connected to an elevator and the bottom plate is openable and closable and forms a grain distribution and fall port. At the top, there is a first full-volume switch that detects the full-volume state at the time of distributing and filling,
The second one detects that the upper gap is filled with grains.
A full quantity switch is provided respectively, and the bottom plate of the grain distribution conveyor is opened by the full quantity sensing operation of the first full quantity switch, and a grain loading stop signal is sent by the full quantity sensing operation of the second full quantity switch. A grain rationing device for a grain dryer, further comprising a control function for closing the bottom plate of the grain rationing conveyor by the return operation of the first full-load switch.