JPS647312B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for drying grains such as unhulled rice or wheat grains.

(Prior art) Although not described in patent publications, there is a known drying device for the present invention that temporarily suspends drying and adjusts the humidity in order to obtain high-quality dried grains with less shell cracking. The structure is as follows.

That is, as shown in Fig. 1, for example, three tanks A,
A supply elevator D is placed near B and C, a distribution device E is attached to the supply elevator D, and the grains fried by the supply elevator D are first filled into the tank A via the distribution device E. , when tank A is full, the distribution device E is switched to fill tank B with grain.

At this time, tank C is left empty.

The tanks A, B, and C have the same internal volume. An elevator F and a dryer G are placed near tanks A, B, and C.

The internal volume of the dryer G is one-half of each tank. The grains filled in tank A are taken out and moved to elevator F.
is supplied to the dryer G, dried for the first time in the dryer G, and then stored in an empty tank C.

Then, since tank A becomes empty, grains from tank B are taken out and supplied to dryer G by elevator F, dried by dryer G, and then stored in tank A, which is now empty. Then, since tank B becomes empty, the grains in tank C are taken out and fed to dryer G using elevator F, and then dried for the second time in dryer G before being stored in tank B, which is now empty. .

In this way, drying is usually repeated about five times to dry all the grains.

(Problems to be Solved by the Invention) Drying using this method has the problem that when high-moisture grains are received and stored in a tank, the rice becomes steamy, yellowed, and fermented.

(Means for Solving the Problems) The present invention overcomes the above problems by only slightly changing the entire system, and also overcomes new problems accompanying system changes. A plurality of tanks 11, 12, 13, and 14 are arranged in the vicinity of one dryer 6, and in the vicinity of the dryer 6, grains are transferred from the relay tank 1 that stores undried grains to the dryer 6. A dedicated supply device X is provided to supply the dryer 6 and the tank 1.
1, 12, 13, 14, there is a first circulation device Y extending from the dryer 6 to the tanks 11, 12, 13, 14, and the tanks 11, 12, 13, 1.
4 to the dryer 6, the tanks 11, 12, 13,
14, an intermediate level switch 27 is attached to at least one tank 13, and the intermediate level switch 27 is installed at a position such that the internal volume of the tank above it is approximately equal to the internal volume of the dryer 6,
The intermediate level switch 27, the feeding device This is a grain drying device connected to the

(Structure) To explain with a diagram, 1 is a relay tank that stores a desired amount of undried rice (or wheat grains). The tank 1 is not of large capacity, but is a so-called pool tank, and is intended to supply grain without interruption. A funnel-shaped outlet 2 is formed at the bottom of the tank 1, and a shutter 2' is attached to the outlet 2.
The shutter 2' is usually constituted by a solenoid valve.

A conveyor 4 rotated by a motor 3 is attached to the lower part of the discharge port 2, and the unhulled rice that has fallen from the discharge port 2 is transferred to the conveyor 4. 5 is conveyor 4
It is an elevator that lifts the unhulled rice that has been transported by
The unhulled rice is loaded into a dryer 6 by an elevator 5.

Therefore, in FIG. 3, the route from the relay tank 1 to the inlet 7 of the dryer 6 is
This will be a dedicated "supply device X" for.

The dryer 6 is configured as a downstream type, and has an inlet 7 at the top.
A discharge port 8 is formed at the bottom. 8' is a shutter attached to the discharge port 8, which is usually composed of a solenoid valve.

9 is a conveyor that transports the dry grains falling from the discharge port 8; 10 is an elevator that lifts the dry grains that have been transported horizontally by the conveyor 9; and in the vicinity of the elevator 10, a desired number of storage and escalator units are installed. Tank 1 for receiving cargo
1, 12, 13, and 14 are provided.

Although the number of tank groups is three in FIG. 2 and four in FIG. 3, the present invention can be practiced as long as there are two or more tanks.

The tanks 11, 12, 13, and 14 are formed to have the same internal volume, and each has a capacity of 2 to the internal volume of the dryer 6.
Formed to double the size.

Reference numeral 15 denotes a conveyor for conveying the grains fried by the elevator 10 into each tank 11, 12, 13, and 14; 16 a conveyor for transporting the unhulled rice discharged from each tank 11, 12, 13, and 14; 17; is an elevator that lifts the unhulled rice that has been transported laterally by the conveyor 16, and the discharge gutter 18 of the elevator 17 is opened to the inlet 7 of the dryer 6.

Among the above configurations, the route from the conveyor 9 to the lining conveyor 15 is connected to the tanks 11, 12, 13, 1
4, and this is called the "first circulation device Y".
The route up to this point is a return route back to the dryer 6,
This is called the "second circulation device Z."

When the manual pushbutton switch 46 (see FIG. 4) is pressed, the closed stop switch 47 is opened.
The relay 45 is energized via the switch 4
5' is turned ON, the relay 42 is energized via the closed switch 40'', and the switch 42'
is turned ON and the relay switch 21' is closed.
The motor 3 is energized to rotate the conveyor 4, and the shutter 2' of the outlet 2 of the relay tank 1 is opened at the same time as the switch 46 is turned on, so that the grains fall from the outlet. do.

A level switch 19 is installed at a position above the interior of the dryer 6 and slightly below the inlet 7. The switch 19 is pressed to stop the motor 3 when the dryer 6 is full of grains,
Close shutter 2'. That is, in FIG. 4, 19' is a switch that turns ON when the level switch 19 is pressed;
Then, timer relay 20 is energized, timer switch 20' is turned on, and relay 2 is turned on.
1 is energized and its relay switch 21' is turned off.
The motor 3 is configured to stop when the motor 3 is turned on.

At the same time, the relay 21 turns on the self-holding switch 21'' and turns off the switch 21.

In this way, the instantaneous operation of the level switch 19 forms a closed circuit connecting the self-holding switch 21'', the timer switch 20', and the relay 21 as described above.

When the self-holding switch 21'' is turned ON and the timer relay 20 is energized for a certain period of time (T seconds), the relay 20 is turned OFF, the timer switch 20' is turned OFF again, and the relay 20 is turned OFF.
1 is de-energized and relay switch 21' is turned on.
Then, motor 3 is restarted.

Each of the tanks 11, 12, 13, 14 has level switches 23, 24,
25 and 26 are provided. In addition to the level switches 23 to 26, an intermediate level switch 27 is provided at an intermediate position in the height thereof, and the tank internal volume above the level switch 27 is the internal volume of the dryer 6. Form it so that it is equal to .

The level switch 27 can be installed on any one tank or on all tanks 11, 12, 1.
3 and 14, and in this example,
A level switch 27 is provided in the tank 13, and when grain is stored in the tank 13 and the intermediate level switch 27 is turned on, the relay switch 27' is activated.
It is configured to turn on.

Discharge switches 32, 33, 34, 35 are attached to the lower discharge ports 28, 29, 30, 31 of each tank 11, 12, 13, 14, respectively. ,
Shutters 36, 37, 38, and 39 are attached to each drop port of the tensioning conveyor 15, respectively.

When the motor 49 is energized and the conveyor 9 rotates, and the elevator 10 lifts the grain, for example, the shutter 3 of the tensioning conveyor 15 is first
6 is opened and paddy rice is stored in the tank 11. When the storage amount in the tank 11 reaches the level switch 23 (full tank state), the shutter 36 is automatically closed.
The next shutter 37 is automatically opened and unhulled rice is automatically supplied into the next tank 12. Similarly, when the storage amount in the tank 12 increases and becomes full and reaches the level switch 24, the shutter 37 is automatically closed and the next shutter 38 is automatically opened to store grain in the tank 13.

When the intermediate level switch 27 is turned on due to the grain pressure in the tank 13, the outlet 28 of the tank 11 is opened and at the same time the circuits of the motor 3 etc. are opened.
OFF, the "supply device X" stops, the motor 22 is energized and the "second circulation device Z" is started,
The grain is lifted by the elevator 17 and returned to the dryer 6, and the "first circulation device Y" is operated as it is.
Configure to automatically start circulating drying.

That is, in FIG. 4, since the intermediate level switch 27 is provided in the third tank 13, the selection switch 43 is manually switched to the position indicated by the solid line 3, the relay 44 is energized, and the switch 44 is turned on. ’ is turned on. In this state, when the level switch 27 is activated, the relay switch 2
7' is turned ON, the timer 48 is energized, the timer switch 48' is turned ON, and the relay 40 is energized. Therefore, the switch 40' of the relay 40 is turned on, the switch 40'' is turned off, the relay 41 is energized, the switch 41' is turned on, the motor 22 is energized via the switch 21 which is on, and the second Start the circulation device Z,
Also, the relay 42 is de-energized and the switch 4
2' is turned OFF, the power supply to the motor 3, which had been rotating until then, is stopped, and the "supply device X" is stopped.

Next, 43 in FIG. 4 is a selection switch,
By switching this, each tank 11, 1
Any one of 2, 13, and 14 can be selected to be the final filled tank. That is, if the selection switch 43 is switched to the third switch (the state shown in FIG. 4), the relay 44 is energized, the switch 44' is turned on, and the intermediate level switch 27 attached to the tank 13 is activated. Make it possible. 6' is a hot air supply device, 45 is a relay, 4
5' is the switch, 45'' is a self-holding switch, and 47 is a stop switch.

(effect) Next, the action will be described.

The present invention has the above configuration, and since the intermediate level switch 27 is provided in the third tank 13 in the embodiment, the selection switch 43 in FIG. 4 is switched to position 3. Then, the relay 44 is energized and the switch 44' is turned on. When the shutter 2' is closed and the manual pushbutton switch 46 is manually pressed to turn on, the relay 45 is energized via the closed stop switch 47, turning on the switches 45' and 45''. both
Turn it on.

Then, the relay 42 is energized through the closed switches 40'', and the switch 42' is turned on.
Set to ON. Since the relay switch 21' is closed, the motor 3 is energized to rotate the conveyor 4 and at the same time open the shutter 2'.

Therefore, the grains falling from the discharge port 2 are moved to the right by the conveyor 4, fall into the loading port at the lower end of the elevator 5, rise within the elevator 5, and flow through the discharge gutter to the inlet 7 of the dryer 6. Inflow. That is, the "supply device X" operates to supply grain to the dryer 6.

In this case, initially, the shutter 8' of the discharge port 8 of the dryer 6 is closed, and the grain is gradually stored in the dryer 6 until it reaches the level switch 19. Then, the level switch 19 is pressed by the grain pressure, turning on the switch 19', energizing the timer relay 20 through the switch 19', and turning on the timer switch 20'.
The relay 21 is energized, and the relay switch 2
1' is turned off, the self-holding switch 21'' is turned on, and another switch 21 is turned off. Therefore, the motor 3 is stopped, the shutter 2' is closed, the conveyor 4 is stopped, and at the same time, the motor 49 is energized. (omitted in the wiring diagram), the shutter 8' attached to the outlet 8 of the dryer 6 opens, and the dryer 6
The hot air supply device 6' attached to the grain is rotated to dry the grain, and the grain is dropped from the discharge port 8 onto the conveyor 9 and conveyed to the elevator 10.

The grains fried by the elevator 10 reach the loading conveyor 15 and flow into the tank 11 from the shutter 36. The above is the start-up of the "first circulation device Y".

In this case, the shutter 3 of the tensioning conveyor 15
7, 38, 39 and each tank 11, 12, 1
Each of the lower discharge ports 28 to 31 of No. 3 and 14 is closed. Therefore, the grain falls into the tank 11 only from the open shutter 36 and finally reaches the level switch 23.

Then, the level switch 23 closes the shutter 36, opens the shutter 37, and fills the next tank 12 with grain.

In the above case, when the grains flow out from the outlet 8 of the dryer 6, the grains in the dryer 6 are removed from the level switch 1.
9, but the motor 3 operates regardless of this. That is, when the motor 3 is pressed and stopped by the grain pressure of the level switch 19, the timer relay 20 shown in FIG. 4 automatically operates after T seconds and turns off the timer switch 20'.
1 is automatically turned off after T seconds, and the relay switch 21' is turned on to restart the motor 3. Therefore, the amount stored in the dryer 6 remains approximately constant (in addition, even if the level switch 19 is in a position where the grain does not drop for a long time, in that case, the level switch 19 is Since it will be pressed continuously, press relay switch 2.
1' remains OFF and motor 3 does not rotate).

Since the selection switch 43 in FIG. 4 has been switched to position 3, the relay 44 is energized and its switch 44' is turned on.

Continuing work in this state, when the tank 12 becomes full and the level switch 24 of the tank 12 is pressed with grain, the shutter 37 is closed, the shutter 38 is opened, and the grain flows into the tank 13. .

Since an intermediate level switch 27 is installed at an intermediate position of the tank 13, the grain reaches the intermediate level switch 27.

The state at this time is a Dryer 6 is full b Tank 11 is full (twice the amount of dryer 6) c Tank 12 is full (twice the amount of dryer 6) d Tank 13 is half full (same amount as dryer 6) It is.

Then, by the action of the level switch 27, the lower discharge port 28 of the tank 11 is opened, the relay switch 27' is turned ON, and the timer 48 is activated via the ON switch 44'.
is energized, the switch 48' is turned on,
The relay 40 is energized and the switch 40' is turned on.
ON, switch 40″ is OFF, relay 4
1 and de-energizes the relay 42. Therefore, the switch 41' is turned on, the motor 22 is energized, the conveyor 16 is rotated, and the grains that have fallen from the lower discharge port 28 are removed from the elevator 17.
Return it to the dryer 6 using the "Second circulation device Z"
start.

C. At the same time, switch 42' is turned OFF by turning OFF relay 42, and motor 3 is stopped.
Stop “supply device X”.

In other words, the filling from the relay tank 1 to the dryer 6 is stopped by the intermediate level switch 27,
Circulation drying will begin.

However, although the motor 22 is energized and circulation drying is started as described above, only the shutter 38 of the tensioning conveyor 15 is open, and the outer shutters 36, 37, and 39 are all closed. Therefore, the grain in the dryer 6 continues to be filled into the tank 13, but since the tank space above the intermediate level switch 27 and the internal volume of the dryer 6 are configured to be equal, the grain in the dryer 6 is All of the grain that had been stored up to that point fills the upper space of the intermediate level switch 27.

Then, the tank 13 is filled with grains that have passed through the dryer 6 only once.

However, at this time, the dryer 6 is empty because the "supply device , the grains stored in the tank 11 flow in as replacements.

Tank 13 is full and level switch 2
When 5 is pressed, the shutter 38 will close and the shutter 39 will open.

At this point, the dryer 6 is full with half of the grain in the tank 11.

b Tank 12 is full.

c Tank 13 is full.

d Tank 14 is empty.

It is.

Therefore, the grain in the dryer 6 is removed from the empty tank 14.
It will flow inside. Therefore, tank 11
The remaining grains in the dryer 6 pass through the dryer 6 and the entire amount flows into the empty tank 14.

When the grains in the tank 11 have completely flowed out, the lower outlet 28 of the tank 11 is automatically closed, the lower outlet 29 of the tank 12 is opened, and the grains in the tank 12 are passed through the dryer 6 and then removed. It is then transferred into the empty tank 11.

(Effects) In the present invention, a plurality of tanks 11, 12, 13, and 14 are arranged near one dryer 6, and a relay tank 1 for storing undried grains is arranged near the dryer 6. A dedicated feeding device X for feeding grains from the dryer 6 to the dryer 6 is provided, and between the dryer 6 and the tanks 11, 12, 13, 14, the grains are fed from the dryer 6 to the tanks 11, 12, 13, 14. 14, and the tanks 11, 12, 1
3, 14 to the dryer 6
In the tank 11, 12,
At least one tank 13 among 13 and 14
An intermediate level switch 27 is attached to the intermediate level switch 27, and the installation position of the intermediate level switch 27 is such that the internal volume of the tank above it is approximately equal to the internal volume of the dryer 6, and the intermediate level switch 27 and the supply device The second circulating device Z is a grain drying device connected so that when the intermediate level switch 27 is pressed by grain pressure and turned ON, the feeding device X stops and the second circulating device Z starts. All grains to be supplied are supplied to each tank 11 to tank 14 through the dryer 6, so
All the grains in the tanks 11 to 14 are dried once, and the stuffiness is eliminated.

In particular, an intermediate level switch 27 is attached to at least one tank, and the intermediate level switch 27 is installed at a position such that the internal volume of the tank above it is approximately equal to the internal volume of the dryer 6, and Since the intermediate level switch 27 is provided, when moving to circulation drying after finishing the feeding operation, the grains in the dryer 6 can be accurately controlled by the intermediate level switch 2.
7 can be transferred to the upper space, and thereafter, circulating drying can be performed while accurately replacing each tank.

C. If there were no intermediate level switch 27, it would not be possible to stop the grain supply in the tanks 11 to 13 exactly at the half position. If 1/
If you leave about 3 and stick 2/3 into the tank,
When circulating drying begins, some of the grain in the dryer 6 will remain. When this is supplied to the tank 14, once-dried grains and twice-dried grains are mixed in the tank 14, resulting in uneven drying.

[Brief explanation of drawings]

FIG. 1 is a diagram of a known example, FIG. 2 is a schematic diagram of the present invention corresponding to FIG. 1, FIG. 3 is a partially cutaway side view, and FIG.
The figure is a circuit diagram. Explanation of symbols, 1... Relay tank, 2... Discharge port, 2'... Shutter, 3... Motor, 4...
...Conveyor, 5...Elevator, 6...Dryer, 6'
... Hot air supply device, 7 ... Inflow port, 8 ... Discharge port, 8' ... Shutter, 9 ... Conveyor, 10
...Elevator, 11, 12, 13, 14...Tank, 15...Structure conveyor, 16...Conveyor,
17... Elevator, 18... Discharge gutter, 19... Level switch, 19'... Switch, 20... Timer relay, 20'... Timer switch, 21
...Relay, 21'...Relay switch, 21''...
...Self-holding switch, 21...Switch, 2
2...Motor, 23...Level switch, 24
...Level switch, 25...Level switch,
26...Level switch, 27...Intermediate level switch, 27'...Relay switch, 28...Lower outlet, 29...Lower outlet, 30...Lower outlet, 31...Lower outlet, 32... ...Ejection switch, 33...Ejection switch, 34...Ejection switch, 35...Ejection switch, 36...Shutter, 37...Shutter, 38...Shutter,
39...Shutter, 40...Relay, 40'...
...Switch, 40''...Switch, 41...Relay, 41'...Switch, 42...Relay, 4
2'...Switch, 43...Selection switch, 44
...Relay, 44'...Switch, 45...Relay, 45'...Switch, 45''...Switch, 4
6...Manual push button switch, 47...Stop switch, 48...Timer, 48'...Timer switch, 49...Motor.

Claims (1)

[Claims] 1 A plurality of tanks 11, 12, 13, 14 are arranged near one dryer 6, and the dryer 6
A dedicated feeding device X for supplying grains from a relay tank 1 containing undried grains to the dryer 6 is installed near the dryer 6 and the tank 1.
1, 12, 13, 14, there is a first circulation device Y extending from the dryer 6 to the tanks 11, 12, 13, 14, and the tanks 11, 12, 13, 1.
4 to the dryer 6, the tanks 11, 12, 13,
14, an intermediate level switch 27 is attached to at least one tank 13, and the intermediate level switch 27 is installed at a position such that the internal volume of the tank above it is approximately equal to the internal volume of the dryer 6,
The intermediate level switch 27, the feeding device Grain drying equipment connected to.