JPH067774B2 - Tea making line - Google Patents

Description

Description: TECHNICAL FIELD The present application relates to a tea production line including a raw leaf feeder, a continuous steamer, a steaming leaf pool, and a batch type tea making machine.

[Conventional technology]

The drawing shows a raw leaf feeder 1, a continuous steamer 2, a steaming pool 3,
1 shows a general tea making line including a batch type tea making machine 4, wherein 5 is a cooling machine and 6 is a steam feeding machine. As the batch type tea making machine 4, a leaf cutter or a rough kneader is used.

In such a tea-making line, while the batch-type tea making machine 4 is performing tea-making processing, the steamed leaves of the next batch are steamed in the steam-leaved pool 3
When the set storage amount is reached, the stored steamed leaves are put into the batch-type tea making machine 4. At this time, the batch-type tea making machine 4 must have already completed the processing of the previous batch and completed the take-out, and be in a state of being receptive.

[Problems to be Solved by the Invention]

However, even if the line balance is lost or the tea-making process of the batch-type tea making machine 4 is delayed, the batch-type tea making machine 4 is still ready to receive even if the steam-leaved pool 3 reaches the set storage amount. Otherwise, steam leaves are successively supplied to the steam-leaves pool 3 until they can be received. Therefore, conventionally, the raw leaf feeder 1 was stopped immediately when the number of steamed leaves in the steamed leaf pool 3 reached the set storage amount. However, at that time, the tea leaves (Dochu tea leaves) present in the continuous steamer 2, the cooler 5, and the steamer leaf feeder 6 are still supplied to the steaming leaf pool 3 as they are, and thus exceed the set storage amount. Since the batch must be put into the batch type tea making machine 4 as it is, the batch can no longer undergo an appropriate tea making process and the tea making quality is impaired. Therefore, in such a case, a method of stopping the steam-feeding machine 6 and stopping the excess steam-leaves at the inlet 6'of the steam-feeding machine 6 has been adopted. In addition to this, there was a problem that it gets stuffy while stopped.

Therefore, the present application predicts that the tea leaves will be stored up to the set amount in the steaming leaf pool before the batch type tea making machine can be received, and it is possible to stop the fresh leaf feeder at an appropriate time in advance. Intended to provide the line.

[Means for Solving the Problems]

The tea production line of the present application is a tea production line that includes a raw leaf feeder, a continuous steamer, a steaming leaf pool, and a batch type tea making machine, and the remaining storage amount required until the steaming leaf pool reaches a set storage amount is after the raw leaf feeder. When the amount of tea leaves is less than or equal to the amount of tea leaves in front of the steamed leaf pool, and it is predicted that the tea leaf will be stored up to the set amount in the steamed leaf pool before the batch type tea making machine can accept, The feature is that the loading machine is stopped.

[Action]

While starting the tea making process of the batch type tea making machine, the next batch of steamed leaves is put into the steamed leaf pool.

The remaining storage amount required until the steamed leaf pool reaches the set storage amount is less than or equal to the amount of in-service tea leaves existing before the steamed leaf pool after the raw leaf feeding machine, and before the batch type tea machine can be received. When it is predicted that the set amount of tea leaves will be stored in the steaming leaf pool, the raw leaf feeder is stopped.

Then, when all the mid-course tea leaves existing after the fresh leaf feeder and before the steaming leaf pool are sent to the steaming leaf pool, the amount of steamed leaves in the steaming leaf pool becomes substantially equal to the set storage amount.

After that, when the batch type tea making machine becomes ready to receive, the steamed leaves stored in the steamed leaf pool are charged.

〔Example〕

 Embodiments of the present application will be described below with reference to the drawings.

In this example, the amount of tea leaves is set on a weight basis, measured, and calculated, but this can also be used on a volume basis.

The description of each symbol in the figure is as described above, but in this example, a leaf cutter is applied as the batch-type tea making machine 4. Further, in particular, a load cell (not shown) is used as the measuring means of the steamed leaf pool 3, and the detected value of the load cell is confirmed as the current storage amount Wg every one second. Further, the elapsed time t from the start of storage of the steam-leaf pool 3 is counted by a timer (not shown).

First, the amount Wj of mid-course tea leaves existing after the fresh leaf feeder 1 and before the steaming leaf pool 3 is measured. This is because the fresh leaf feeding device 1 is stopped and the current storage amount Wg1 of the steaming leaf pool 3 at that time,
Then, it can be obtained by the difference in the current stored amount Wg2 when the steamed leaves supplied to the steamed-leaves pool 3 are interrupted. According to this method, the amount Wj of tea leaves in the way can be obtained most accurately, but if the accuracy is not required so much, an average value may be determined for each line, or it can be determined for each tea season. You may prepare more than one.

When tea production is started, raw leaves are fed from the raw leaf feeder 1 to the continuous steamer 2 to undergo steaming heat treatment, then cooled by the cooler 5 and passed through the steamer leaf feeder 6 to be stored in the steam leaf pool 3 one after another. Go. The amount of steamed leaves to be stored in the steamed leaves pool 3 is
It is set as the set storage amount Ws according to the usual method, and when the current storage amount Wg reaches the set storage amount Ws, the steamed leaves that have been stored with the bottom of the steaming leaf pool 3 open are stored in the batch type tea making machine 4. It is thrown in. After that, the bottom of the steamed leaf pool 3 is closed as before, and the storage of the next batch is started.
Starts the tea making process, and thereafter the above processes are repeated.

In parallel with such processing, the following processing unique to this example is performed. That is, each time the current storage amount Wg is confirmed, the current storage amount Wg is subtracted from the set storage amount Ws, the remaining storage amount Wn is obtained and compared with the midway tea leaf amount Wj. When the quantity is less than Wj,
The estimated storage amount Wy is calculated by multiplying the average storage speed w obtained by dividing the current storage amount Wg by the elapsed time t from the start of storage by the waiting time T until the batch type tea making machine 4 can be received. It is determined whether the predicted storage amount Wy exceeds the set storage amount Ws. If it exceeds, it is predicted that if the storage is continued as it is, the tea leaves will be stored up to the set amount in the steaming leaf pool before the batch type tea making machine can accept it. To stop the supply of fresh leaves. Then, when all the midway tea leaves existing after the fresh leaf feeder 1 and in front of the steaming leaf pool 3 have been thrown into the steaming leaf pool 3, the current storage amount Wg becomes substantially equal to the set storage amount Ws. It suffices to wait until the batch-type tea making machine 4 can be received. The waiting time T until the batch type tea making machine 4 can be received can be obtained by adding the time required for taking out to the remaining processing time of the batch type tea making machine 4. Further, although it is sufficient that the waiting time T decreases with the passage of time, the waiting time T may change to increase due to some happening. At that time, the changed standby time T is again multiplied by the average storage speed w at that time to calculate the predicted storage amount Wy, and it is determined whether or not the predicted storage amount Wy exceeds the set storage amount Ws. Similarly, the fresh leaf feeder 1 may be stopped to stop the supply of fresh leaves. If the standby time T is equal to or less than the value obtained by dividing the amount Wj of tea leaves in the way by the average storage speed w, the restart of the fresh leaf feeder 1 will be performed after the steam leaves pool 3 discharges steam leaves. Storage can begin immediately. A value obtained by dividing the remaining storage amount Wn by the average storage speed w (determined storage amount Wn) is used to determine whether or not the tea leaves will be stored up to the set amount in the steam-leaved pool before the batch-type tea making machine can be received. W
Alternatively, it may be determined whether or not the time to reach s) is smaller than the waiting time T. In addition, the steaming leaf pool determines whether or not the remaining storage amount required until the steaming leaf pool reaches the set storage amount is less than or equal to the amount of tea leaves in the road existing after the raw leaf feeder and in front of the steaming leaf pool. Remaining time t1 required to reach the amount
Whether (for example, the remaining storage amount Wn is obtained by dividing the average storage speed w) is equal to or less than a time t2 (obtained by an experiment in advance) until all the tea leaves in the way after the fresh leaf feeder 1 is stopped are stored. You may judge by.

When a balance (not shown) is used as the weighing means of the steamed leaf pool 3 instead of the load cell, the time t1 required to store the steamed leaf in the steamed leaf pool 3 up to the preset storage amount Ws in advance.
And the set storage amount Ws is divided by this time t1 to obtain the average storage speed w, and the current tea leaf amount Wg can be obtained by multiplying the elapsed time t by the average storage speed w to perform the same processing. Is.

Further, there is a tea manufacturing line in which steamed leaves supplied from the steamer charging device 6 are first charged into a fluidized leaf beater and then distributed into two batch type rough kneaders. The pool above the rotary type kneader is considered together as the steamed leaf pool in the present application, and it is predicted whether both pools will reach the set storage amount before either batch type rougher can be accepted. If so, the present application can be applied.

〔effect〕

According to the tea production line of the present application, it is possible to prevent the tea leaves from being stored in the steaming leaf pool in excess of the set amount, so that an amount of steamed leaves in excess of the set storage amount is fed to the batch type tea making machine. There is no risk of degrading the tea-making quality of the batch.

[Brief description of drawings]

The drawing is a front view showing a tea manufacturing line according to the present embodiment. 1 ... Fresh leaf feeder, 2 ... Continuous steamer, 3 ... Steaming pool, 4
... Batch type tea making machine

Claims (2)

[Claims] 1. In a tea production line including a raw leaf feeder, a continuous steamer, a steaming leaf pool, and a batch type tea making machine, the remaining storage amount required until the steaming leaf pool reaches a set storage amount is after the raw leaf feeding machine. The amount of tea leaves is less than the amount of tea leaves in front of the steamed leaf pool,
Moreover, when it is predicted that the set amount of tea leaves will be stored in the steaming leaf pool before the batch type tea making machine can be received, the fresh tea making machine is stopped. 2. A tea manufacturing line including a raw leaf feeder, a continuous steamer, a steaming leaf pool, and a batch-type tea making machine, the current storage amount in the steaming leaf pool is measured at any time, and the current storage amount is set from the preset storage amount in the steaming leaf pool. The remaining storage amount obtained by subtracting the amount is less than or equal to the amount of tea leaves in the road existing after the fresh leaf feeder and before the steaming leaf pool, and the average obtained by dividing the current storage amount by the elapsed time from the start of storage A tea production line, characterized in that when the predicted storage amount obtained by multiplying the storage speed by the waiting time until the batch type tea machine becomes acceptable exceeds the set storage amount, the fresh leaf feeder is stopped.