JPS641002Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a flow rate control device for a continuous rice mill.

(Prior art) Conventionally, a lift machine was installed between multiple rice milling machines each having a receiving tank at the top to feed the rice discharged from the previous rice milling machine into the receiving tank of the next rice milling machine, resulting in continuous rice milling. A continuous rice milling machine that performs this has been put into practical use.

By the way, the biggest problem with multi-seam rice mills is balancing the flow rate (milled rice amount) of each rice mill.

For example, if the flow rate of the later rice mill is higher than that of the earlier rice mill, there will be no rice in the receiving tank of the later rice mill, and when rice is put into this receiving tank from the elevator, the rice will be in the receiving tank. Because it hits the bottom directly,
Rice cracks occur.

In addition, since rice is intermittently fed into this receiving tank from the bucket of the elevator, the rice milling machine that follows is in a state where it is in a state of stagnation, resulting in uneven rice milling.

On the other hand, if the flow rate of the rice milling machine earlier than that of the rice milling machine that follows is higher, rice will overflow from the receiving tank of the rice milling machine that follows.

In this way, it is ideal that the flow rate be balanced between the first rice mill and the second rice mill, but the flow rate cannot be balanced depending on the degree of rice milling, the condition of the rice mill, etc. More often than not.

Therefore, there was a problem in that the operator had to constantly monitor the amount of rice in the receiving tank of the rice milling machine and adjust the flow rate of the rice milling machine and the degree of rice milling.

(Purpose of the invention) The present invention was made to solve the above-mentioned conventional problems.In a multi-column rice milling machine, once the flow rate is set at the start of rice milling, the flow rate is automatically set until the end of rice milling. The object of the present invention is to provide a flow rate control device that can adjust the balance of the flow rate.

(Configuration of the device) For this reason, the device is a linked rice polishing machine in which a reserve tank is placed between the receiving tank of the first rice polishing machine and the receiving tank of the second rice polishing machine, and a switching valve is provided at the outlet of the elevator to switch the outflow direction to the second receiving tank and the reserve tank, and the reserve tank is connected to the inlet of the elevator via a shutter, and each tank is provided with an upper limit level meter and a lower limit level meter which detect the upper and lower limits of the rice put in, and a control circuit is provided which starts and stops each of the rice polishing machines and elevators based on the detection of each level meter, and opens and closes the shutter.

Then, when the upper limit level of the previous receiving tank is detected, the machine that feeds rice into this receiving tank is stopped,
When the lower limit level is detected, the machine that feeds rice into this receiving tank and the previous rice milling machine are stopped, and when the upper limit level of the later receiving tank is detected, the switching valve is switched to the reserve tank side, and the rice in the elevator is transferred to the reserve tank. When the lower limit level is detected, the switching valve is switched to the rear tank side, and the rice in the elevator is input into the rear tank again, and the rice in the reserve tank is input into the rear tank, and the rice from the reserve tank is input into the rear tank. When the lower limit level of the reserve tank is detected, the elevator and subsequent rice milling machine will be controlled to stop.

(Effects of the invention) According to the invention, by controlling the rice milling machine, elevator, and shutter using a level meter, rice does not overflow from each tank and the balance of flow rate is automatically adjusted.

Furthermore, by providing a spare tank, there is no need to immediately stop the previous rice milling machine, elevator, etc., so that rice milling can continue smoothly.

Therefore, there is no need for an operator, and rice cracking and uneven rice milling are prevented.

(Example) As shown in FIGS. 1 and 2, the continuous rice milling machine includes a first rice milling machine M1 having a first receiving tank T1 at the top, and a second rice milling machine M1 having a second receiving tank T2 at the top. machine M2, a first elevator L1 in front of the first rice mill M1, a second elevator L2 between the first rice mill M1 and the second rice mill M2, and a third elevator L1 after the second rice mill M2.
The rice discharged from the brown rice tank T0 is loaded into the first receiving tank T1 by the first elevator L1, the rice is polished by the first rice milling machine M1, and the rice is charged into the second receiving tank T2 by the second elevator L2. The rice is polished by the second rice miller M2, and then transported to the next process by the third elevator L3.

On the other hand, the first receiving tank T1 and the second receiving tank T
A reserve tank T3 is arranged between the second elevator L2 and a two-way switching valve V1 at the outlet of the second elevator L2.
is provided, and a second receiving tank T2 and a reserve tank T
The outflow direction is switched between 3 and 3.

A discharge pipe P communicating with the inlet of the second elevator L2 is provided at the lower part of the reserve tank T3.

In addition, the brown rice tank T0 and the first to third tanks T
Shutters S0 to S3 are provided below T1 to T3, respectively.

Further, the first to third tanks T1 to T3 are provided with upper limit level meters U1 to
U3 and lower limit level meters D1 to D3 that detect the lower limit
are provided respectively.

The second rice mill M2 is provided with a two-way switching valve V2, and the outflow direction is switched between the third elevator L3 and the second elevator L2.

The above-mentioned first to second rice milling machines M1, M2, first to third
As shown in FIG. 3, the elevators L1 to L3, etc. are controlled by the control circuit CU as follows.

At the start of rice milling, the switching valve V1 switches to the second receiving tank T.
2 side, the switching valve V2 of the second rice milling machine M2
is switched to the second elevator L2 side. In addition, the switching valve V2 is set to the third position when rice milling starts to proceed smoothly.
It is switched to the elevator L3 side.

The first shutter S1 of the first rice mill M1 and the second shutter S2 of the second rice mill M2 are opened, and the first to
2nd rice milling machine M1, M2, 1st to 3rd elevator L1~
L3 is activated and rice milling progresses.

If the upper limit level meter U1 of the first receiving tank T1 detects that there is rice, if this is left unattended, the first
As rice overflows from the receiving tank T1, the first elevator L1 is stopped and the shutter S of the brown rice tank T0 is
0 is closed.

In addition, the upper limit level meter U1 of the first receiving tank T1
If it is detected that there is no rice, the first elevator L1 is restarted after a predetermined time and the shutter S0 of the brown rice tank T0 is opened.

Furthermore, the lower limit level meter D of the first receiving tank T1
1 detects that there is no rice, the first rice milling machine M1 is stopped after a predetermined time, and the first shutter S1
is closed. At the same time, the first elevator L1 is also stopped, and the shutter S0 of the brown rice tank T0 is also closed.

On the other hand, the upper limit level meter U2 of the second receiving tank T2
If it detects that there is rice, rice will overflow from the second receiving tank T2 if it is left unattended, so the first
The switching valve V1 is switched to the reserve tank T3 side, and the rice discharged from the second elevator L2 is transferred to the reserve tank T3.
will be put into the At the same time, the third shutter S3 of the reserve tank T3 is closed.

As the second rice milling machine M2 continues to mill rice smoothly,
Eventually, the rice in the second receiving tank T2 decreases, and either after a predetermined time after the upper limit level meter U2 detects that there is no rice, or immediately after the lower limit level meter D2 detects that there is no rice. The first switching valve V1 is the second
Switched to the receiving tank T2 side, and the second elevator L2
The rice discharged from the tank is put into the second receiving tank T2.

Note that even when the upper limit level meter U3 of the reserve tank T3 detects that there is rice, the first switching valve V1 is switched to the second receiving tank T2 side, but the upper limit level meter U3 of the reserve tank T3 and the second receiver Tank T
If both upper limit level meters U2 detect the presence of rice, an alarm is alerted by an alarm buzzer, flashing lamps, etc.

When the lower limit level gauge D2 of the second receiving tank T2 detects that there is no rice,
The shutter S3 is opened, and the rice in the reserve tank T3 is discharged to the second elevator L2. At this time, the first switching valve V1 is switched to the second receiving tank T2 side, so the rice in the reserve tank T3 is discharged to the second receiving tank T2.
rice is then added and the milling process continues uninterrupted.

The third shutter S3 of the reserve tank T3 is opened, the lower limit level meter D1 of the first receiving tank T1 detects that there is no rice, and the lower limit level meter D3 of the reserve tank T3 detects that there is no rice. After a predetermined time, the second elevator L2 is stopped. During this time, the rice remaining at the bottom of the reserve tank T3 and the first receiving tank T1 is completely discharged, and the second elevator L
This is the time carried by 2.

Also, the third shutter S3 of the reserve tank T3 is opened, and the lower limit level meter D2 of the second receiving tank T2 is opened.
After a predetermined time has elapsed since the rice milling machine detects that there is no rice and the lower limit level meter D3 of the reserve tank T3 detects that there is no rice, the second rice mill M2 is stopped and the second shutter S2 is closed. This time is also the time when the rice remaining at the bottom of the reserve tank T3 and the second receiving tank T2 is completely discharged and transported by the third elevator L3.

Note that when the third shutter S3 is opened, the reserve tank T3 must be opened at the end of rice milling.
This is because the third shutter S3 is opened to discharge the rice contained in the rice tank (second receiving tank T2).
The third shutter S3 is activated by the detection of the lower limit level meter D2.
open).

In this way, the first switching valve V1 is connected to the second elevator L2.
, so that excess milled rice is put into the reserve tank T3, so even if the flow rate of the second rice milling machine M2 is low or the flow rate suddenly decreases during rice milling, rice milling can continue as is. become.

On the other hand, the flow rate of the second rice mill M2 is higher than that of the first rice mill M1.
If the flow rate is higher than the flow rate, the rice in the second receiving tank T2 decreases as described above, and finally the rice input from the second elevator L2 flows into the second receiving tank T2.
Rice cracks when it hits the bottom directly. Therefore, the control circuit CU performs the following control.

First, the lower limit level meter D2 of the second receiving tank T2
If it detects that there is no rice, spare tank T3
The third shutter S3 is opened and the reserve tank T3 is opened.
The rice inside is put into the second receiving tank T2.

And the lower limit level meter D of the second receiving tank T2
If both the lower limit level meter D3 of the second rice mill and the reserve tank T3 detect that there is no rice, the second rice mill M2 is stopped and the second shutter S2 is closed.

At this time, when the first rice milling machine M1 is operating, rice is being put into the second receiving tank T2 of the second rice milling machine M2, but the lower limit level meter D2 is in a state where it cannot be detected.

There, the first rice mill M1 was operating, and the second
If the rice milling machine M2 stops first, the lower limit level meter D2 of the second receiving tank T2 changes from the state where it detects no rice to the state where it detects the presence of rice (or after a predetermined time)
Restart the rice milling machine M2 and switch the second switching valve V2 to the second
Switch to the elevator L2 side and open the second shutter S2, and after a predetermined time, switch the second switching valve V2 to the third elevator L3 side. Note that initially, the second switching valve V2
The reason why the rice is switched to the second elevator L2 side is that when the rice begins to flow in the second rice mill M2, it will be unevenly ground, so that it is refluxed in the second elevator L2. Then, after the time has elapsed for the fluid to flow smoothly, the switch is made to the third elevator L3.

However, if the second and third elevators L2 and L3 are stopped when the second rice milling machine M2 is restarted, it is necessary to restart the second and third elevators L2 and L3 as well. It is also necessary for the elevator L2 to continue operating until the recirculation is finished, that is, until a predetermined period of time has elapsed since the second switching valve V2 was switched to the third elevator L3 side. By performing such control, it is possible to smoothly continue milling rice even when the flow rate of the second rice milling machine M2 is large.

In the above embodiment, the first and second rice polishing machines M1,
Although a two-seater rice mill equipped with M2 has been taken as an example, it goes without saying that the present invention can also be applied to a two-seater rice mill equipped with a third, fourth, ... rice miller.

[Brief explanation of drawings]

Figure 1 is a plan view of the continuous rice mill, Figure 2 is the top view of the rice milling machine.
The front view of the figure and FIG. 3 are system diagrams of the rice milling machine shown in FIG. 1. T1, T2...receiving tank, T0...brown rice tank,
T3...Spare tank, M1, M2...Rice milling machine, L1~
L3...Elevator, S0~S3...Shutter, U1~
U3...Upper limit level meter, D1-D3...Lower limit level meter, V1, V2...Switching valve, CU...Control circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of rice milling machines each having a receiving tank at the top are installed side by side, and an elevator is provided to charge the rice discharged from the previous rice milling machine into the receiving tank of the next rice milling machine. In a continuous rice milling machine that performs continuous rice milling, a spare tank is placed between the receiving tank of the first rice milling machine and the receiving tank of the second rice milling machine, and the second receiving tank and the spare tank are placed at the outlet of the elevator. The tank is provided with a switching valve for switching the outflow direction, and the reserve tank is connected to the inlet of the elevator via a shutter, and each tank has an upper limit level that detects the upper and lower limits of the rice that has been put into the tank. and a lower limit level meter, and a control circuit for controlling the start and stop of each of the rice milling machines and elevators based on the detection of the level meters, and for controlling opening and closing of the shutter. Flow control device for rice milling machine.