JPH07300785A - Apparatus for controlling residual amount in conditioning and paper making equipment - Google Patents

Abstract

PURPOSE:To automatically reduce residual amounts in head tanks of raw materials or chemicals which are not used by change and stop of paper making to zero. CONSTITUTION:Required amounts of raw materials/chemicals used for production of paper are obtained by a device (41) for calculating the required amounts and residual amount of each head tank (20) is obtained by a device (62) for calculating residual amount and when it is judged by a comparing device (70) that required amounts of these raw materials/chemicals are nearly equivalent to residual amounts in head tanks (20) and these raw materials/chemicals are not used next time by paper making change/paper making stop, feed of raw materials/chemicals to the head tanks (20) is stopped and compounding control is carried out by only residual amounts in the head tanks (20).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to various raw material pulps at the time of changing / stopping the paper making of the adjusted paper making equipment in the paper pulp industry.
The present invention relates to a residual amount control device for a regulated papermaking facility that controls the residual amount of each head tank that stores various chemicals.

[0002]

2. Description of the Related Art FIG. 8 is a block diagram of a head tank flow rate control device in a paper making facility. A plurality of raw material head tanks (raw material chests) 1-1 to 1-n that store raw material pulps (hereinafter, abbreviated as raw materials) used for paper production, and a plurality of chemical head tanks 2-1 that store respective chemicals ~ 2-
m is provided.

Head tanks 1-1 for these raw materials and chemicals
1-n and 2-1 to 2-m are provided with level controllers 3 and 4, respectively. These level controllers 3, 4
Inputs the respective measured values (PV) of the liquid level detected by the level detectors 5 and 6, respectively, and the measured values (P
V) and the set value (SV), the valves 7 and 8 are controlled to open and close, and each head tank 1-1 to 1-n, 2-1 to 2-.
The liquid level in m is controlled to be constant.

In such a state, each head tank 1-1
The raw materials and the chemicals stored in 1-n and 2-1 to 2-m are output by the pumps 9-1 to 9-l and the like and sent to the mixing tank 10, where the raw materials and the chemicals are Be compounded.

In this case, the raw materials and chemicals are selected and mixed among the raw materials and chemicals according to the type of paper to be manufactured. After that, the wet paper obtained by blending in the mixing tank 10 is sent to a paper making step, where it is dried by steam to be manufactured as paper.

In such an adjusted papermaking facility, various types of paper (paper manufacturing brands) are manufactured in accordance with the paper manufacturing schedule, and when the manufacturing brands are switched, that is, when the papermaking is changed, the raw materials and chemicals are mixed. There is.

[0007]

However, each raw material, chemical head tank 1-1 to 1-n, 2-1 to 2-m.
Since the level is constantly controlled in
Each head tank 1-1 to 1-n, 2-1 to 2-
It may remain in m and waste raw materials and chemicals.

Therefore, an object of the present invention is to provide a residual quantity control device for a controlled papermaking facility which can automatically reduce the residual quantity of raw materials and chemicals that are no longer used due to papermaking change or papermaking stoppage to the head tank.

[0009]

According to a first aspect of the present invention, a plurality of paper raw materials and chemicals respectively stored in a plurality of head tanks are blended, and the wet paper obtained by this blending is dried to produce a paper. In the adjusted paper making equipment for manufacturing the required amount calculation means for calculating the required amount of raw materials and chemicals required for paper production, and a residual amount calculation means for determining the residual amount of raw materials and chemicals stored in each head tank, Compare the required amount of raw materials and chemicals with the remaining amount in the head tank. If these required amounts and residual amounts are almost the same, and if raw materials and chemicals are not used next time due to paper changing / paper stopping, go to the head tank. The paper feed / paper feed stopping control means for stopping the inflow of the raw materials and the chemicals and controlling the blending only with the remaining amount, and is a residual quantity control device for the adjusted papermaking equipment to achieve the above object.

According to the second aspect, the necessary amount calculating means obtains the remaining time from the scheduled time for changing / stopping the papermaking, and obtains the required amount from the remaining time and the outflow amount from the head tank. According to the third aspect, the necessary amount calculation means obtains the remaining time based on the remaining winding length of the reel on which the manufactured paper is wound and the papermaking speed, and it is necessary from the remaining time and the outflow amount from the head tank. Find the amount.

According to the fourth aspect, the necessary amount calculating means is capable of changing the grade / changing the grade until a predetermined time before the scheduled time for changing / stopping the grade.
Calculate the remaining time from the scheduled time to stop papermaking, obtain the required amount from this remaining time and the amount of outflow from the head tank, and
When the scheduled time for papermaking is reached within the specified time, the remaining time is calculated based on the remaining take-up length of the reel that winds the manufactured paper and the papermaking speed, and it is necessary based on this remaining time and the amount of outflow from the head tank. Find the amount.

According to the fifth aspect, the remaining amount calculating means pre-registers each storage amount corresponding to each liquid level of the head tank, and when the actual liquid level reaches the registered liquid level. It has a function to calibrate the remaining amount to the registered storage amount.

[0013]

According to the present invention, when the raw materials and the chemicals stored in the respective head tanks are mixed to produce paper, the required amounts of the raw materials and the chemicals are required and stored in the respective head tanks. The remaining amount of raw materials and chemicals is required. Then, the required amount of these raw materials and chemicals is compared with the remaining amount in the head tank, and if these required amounts and residual amounts are almost the same amount and the raw materials and chemicals are not used next time due to paper changing / paper stopping. , The inflow of raw materials and chemicals to the head tank is stopped, and the blending control is performed only by the remaining amount of the head tank. As a result, the remaining amount of head tanks for raw materials and chemicals that are not used due to paper changing or paper stopping becomes zero.

According to the second aspect, the required amounts of the raw materials and the chemicals are obtained from the remaining time from the scheduled time for changing / stopping the papermaking, and from the remaining time and the outflow amount from the head tank. According to claim 3, the required amount of the raw materials and chemicals is obtained by calculating the remaining time based on the remaining winding length of the reel on which the manufactured paper is wound and the papermaking speed, and the remaining time and the outflow amount from the head tank. Required from.

According to claim 4, the required amount of the raw materials and chemicals is until a predetermined time before the scheduled time for changing / stopping the paper making.
Based on the scheduled time for changing / stopping paper as described above,
Further, within a predetermined time, which is the scheduled time for paper changing / paper stopping, it is determined based on the remaining winding length of the manufactured paper on the reel and the paper making speed.

According to the fifth aspect, when the remaining amount of the head tank is obtained, when the liquid level of the head tank reaches the registered liquid level, the remaining amount is calibrated to the registered storage amount. There is.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of the remaining amount control device of the adjusted papermaking facility. Explaining the adjusted papermaking equipment, a head tank 20 for storing raw materials / chemicals is provided in the preparation process, and the raw materials / chemicals are stored in the head tank 20 in the valve 2
Inflow through 1.

The flow rate of the raw material / chemicals into the head tank 20 is detected by a flow rate detector 22, and the detection signal is sent to a head tank flow rate controller (hereinafter abbreviated as flow rate controller) 23. The flow rate controller 23 uses the valve 2 based on the flow rate into the head tank 20 and the set value.
1 is controlled to open and close.

A pump 24 is connected to the head tank 20, and the raw material / chemicals delivered by the pump 24 are delivered to a mixing tank 26 through a valve 25. Here, the flow rate sent from the head tank 20 is detected by the flow rate detector 27 and sent to the blending flow rate controller (hereinafter, abbreviated as flow rate controller) 28.

The flow rate controller 28 controls the opening and closing of the valve 25 based on the head tank delivery amount and the set value. A plurality of head tanks 20 are provided for each of the raw materials / chemicals.
Only the stand is shown.

In the papermaking process, the wet paper obtained by mixing the raw materials and the chemicals in the mixing tank 26 is received from the head box 29 and sent to the paper machine 30, where it is dried by steam to be manufactured as paper, and finally, Reel 31
It has been taken up by.

Next, the necessary amount calculation means for obtaining the required amount of the raw materials / chemicals required for paper production is provided for the adjusted papermaking equipment having the above construction. The required amount calculation means has a function of calculating the required amount of the raw material / chemicals from the scheduled end time of production of the production brand or from the reel winding set value which is the production set value amount of the papermaking to be produced. Specifically, as shown in FIG. 2, it has a remaining time measuring function 40 and a necessary amount calculator 41.

Of these, the remaining time measuring function 40 is, as shown in FIG. 3, a rough adjustment measuring system 42 for obtaining the remaining time from the current time to the scheduled end time of production of the manufacturing brand, and the remaining time from the reel winding set value. It has a measuring system 43 for fine adjustment.

The coarse adjustment measuring system 42 subtracts the present time TR and the scheduled time Ty for changing / stopping paper as brand information from the subtracter 4.
4 and input the time (Ty-TR) from the present time to the scheduled time by the subtractor 44 to the remaining time Ta (min
), The remaining time Ta is sent to the x terminal of the switch 45.

The fine adjustment measuring system 43 is provided with a winding detector 46 for detecting the winding amount on the reel 31, and sends the detection signal output from the winding detector 46 to the winding counter 47. The winding measurement value TRR is obtained.

In the set winding length setting device 48, a reel winding set value TRY for each manufacturing brand is set as brand information. The subtractor 49 includes a reel winding measurement value TRR from the winding counter 47 and a set winding length setting device 48.
Input the reel winding set value TRY from, and the difference between the reel winding measurement value TRR and the reel winding set value TRY (T
RY-TRR) which is the remaining winding length (m).

The arithmetic unit 50 calculates the remaining winding length (TRY-TRR).
) And paper-making speed (production speed) SPEED (m / min) are input to obtain remaining time Tb, Tb = (TRY-TRR) * 60 / SPEED (1), and the remaining time Tb is set to y of the switch 45. It is configured to send to the terminal.

This switch 45 is provided with a comparator 51 for judging whether the remaining time obtained by the coarse adjustment measuring system 42 has reached 1 hour, and when the remaining time reaches 1 hour, the switching end is switched to x.
It has a function of switching from the terminal to the y terminal and sending out the remaining time Ta and Tb as the remaining time T.

On the other hand, the required amount calculator 41 has a function of receiving the remaining time T from the switching unit 45 and each head tank delivery amount Fb detected by the flow rate detector 27 and calculating the required amount of the raw material / chemicals. Have

The required amount is calculated in the following two ways. The first method is to calculate for rough adjustment from the scheduled time until paper changing or paper stopping and the currently mixed flow rate, and the required amount of raw material / chemical FNT is FNT = Ta · Fn (2) Desired.

Here, Fn is the total blending flow rate of the head tank delivery amount Fb delivered from each head tank 20 to the mixing tank 26. The second method is for fine adjustment, which is calculated by the winding set amount of the reel 31 and the flow rate currently mixed, and the required amount F of the raw material / chemicals is
NR is obtained by FNR = Tb · Fn (3)

Next, the remaining amount calculating means will be described. The remaining amount calculating means obtains the remaining amount of the raw material / chemicals stored in the head tank 20, and only the configuration thereof is shown in FIG.

The integrator 60 has a function of cumulatively counting the flow rate to the head tank 20 detected by the flow rate detector 22 and calculating the inflow amount into the head tank 20. That is, if the inflow amount into the head tank 20 is FHln, the inflow amount WHln into the head tank 20 is obtained by WHln = (FHln) dt (4).

Further, the integrator 61 has a function of cumulatively counting the flow rate from the head tank 20 detected by the flow rate detector 27 and calculating the delivery amount from the head tank 20. That is, if the delivery amount from the head tank 20 is FH0n, the inflow amount WH0n into the head tank 20 is
Is obtained by WH0n = (FH0n) dt (5).

The remaining amount calculator 62 receives the inflow amount WHln from the integrator 60 to the head tank 20 and the inflow amount WH0n from the integrator 61 to the head tank 20, and calculates the inflow amount WHln and the inflow amount WH0n. It has a function of obtaining the remaining amount WHzn WHzn = WHln-WH0n (6) of the head tank 20 from the difference.

Further, the remaining amount calculating means has a function of calibrating the remaining amount of the head tank. That is, the head tank 20 is provided with the level detector 63 that detects the liquid level in the head tank 20.

The remaining amount calibrator 64 registers in advance each storage amount corresponding to each liquid level of the head tank 20, and the actual liquid level detected by the level detector 63 is the registered liquid level. It has a function of calibrating the remaining amount obtained by the remaining amount calculator 62 to the registered storage amount when the level is reached.

Next, the paper changing / paper stopping control means will be described. This paper changing / paper stopping control means compares the required amount FNS of the raw materials / chemicals with the residual amount WHzn of the head tank 20, and the required amount FNS and the residual amount WHzn are substantially the same amount, and If the raw material / chemicals are not used next time due to the stoppage, the flow of the raw material / chemicals into the head tank 20 is stopped, and the compounding is controlled only by the remaining amount of the head tank 20.

Specifically, the comparator 70 is the required amount calculator 41.
The required amount FNT, FNR from the battery and the remaining amount WHzn from the remaining amount calculator 62 are received, and these required amounts FNT, FNR and the remaining amount WHzn are FNT, FNR≈WHzn (however, FNT, FNR ≧ WHzn) (7) In the case of the above relationship, it has a function of sending an ON (high level) signal to the AND gate 71.

An output signal of the comparator 70 and a signal based on brand information are input to the AND gate 72. This brand information becomes a high level signal if the corresponding raw material / chemical is not used due to the next paper change / paper stop.

Therefore, the AND gate 72 determines the required amount FN.
If T, FNR and the residual amount WHzn are in the relationship of the above formula (7) and the raw material / chemicals are not used in the next paper changing / paper stopping,
The high level signal is sent to the selector 72.

In the selector 72, the level adjuster 73 is connected to the L terminal, the flow rate detector 27 is connected to the M terminal,
If the output of the AND gate 72 is low level, the M terminal is selectively connected and the detection signal from the flow rate detector 27 is sent to the flow rate controller 23 as a set value, and if the output of the AND gate 72 is high level, L It has a function of selectively connecting the terminals and sending the detection signal from the flow rate detector 27 to the flow rate controller 23 as a set value "0" at this time.

Next, the operation of the apparatus configured as described above will be described. (a) Control Before Paper Production The necessary amount of raw materials / chemicals is stored in the head tank 20 in advance. That is, as shown in FIG. 5, the level detector 63 detects the liquid level of the raw material / chemicals flowing into the head tank 20, and the detection signal is sent to the level adjuster 73.

The level adjuster 73 sends the set value of the flow rate to the flow rate controller 23 based on the actual liquid level and the level set value. The flow rate controller 23 includes a flow rate detector 22.
The valve 21 is controlled to open and close based on the inflow amount into the head tank 20 and the set value detected by.

As a result, the head tank 20 stores the required amount of raw materials / chemicals. At this time, the integrator 60
Calculates the amount of inflow into the head tank 20 by cumulatively counting the detection signals from the flow rate detector 22 according to the above equation (4). (b) Control during paper production Start the paper production by operating the pump 24. The amount of the raw material / chemicals delivered from the head tank 20 is detected by the flow rate detector 27, and the detection signal is sent to the flow rate controller 23 through the selector 72.

The flow rate controller 23 inputs the detection signal from the flow rate detector 27 (the amount sent from the head tank 20) as a set value and the detection signal from the flow rate detector 22 on the inflow side. The valve is opened / closed based on the detection signal, and the flow rate is controlled so that the inflow amount and the outflow amount to the head tank 20 become the same.

As a result, the liquid level of the raw material / chemicals stored in the head tank 20 is kept constant. In this state, the integrator 60 cumulatively counts the flow rate to the head tank 20 detected by the flow rate detector 22 according to the above equation (4) and calculates the inflow amount WHln to the head tank 20.

Further, the integrator 61 integrates and counts the flow rate from the head tank 20 detected by the flow rate detector 27 according to the above equation (5) to calculate the delivery amount WH0n from the head tank 20.

The remaining amount calculator 62 receives the inflow amount WHln from the integrator 60 to the head tank 20 and the inflow amount WH0n from the integrator 61 to the head tank 20, and outputs the inflow amount WHln and the delivery amount WH0n. The remaining amount WHzn of the head tank 20 is obtained according to the above equation (6).

When the remaining amount in the head tank 20 is calculated in this way, the remaining amount calibrator 64 is operated by the level detector 63.
It is judged whether the actual liquid surface level detected by has reached the registered liquid surface level, and when this liquid surface level is reached, the remaining amount obtained by the remaining amount calculator 62 is registered storage amount. Calibrate to.

In this way, when the raw materials and chemicals stored in each head tank 20 are output by the pump 24 and sent to the mixing tank 26, the raw materials and chemicals are mixed therein.

In this case, the raw materials and chemicals are selected and mixed according to the kind of paper to be manufactured among the raw materials and chemicals. After that, the wet paper obtained by blending in the mixing tank 26 is sent to a paper making step, where it is dried by steam to be manufactured as paper.

On the other hand, the required amount of raw materials / chemicals used in such paper manufacturing is required. That is, the coarse adjustment measuring system 42 inputs the current time TR and the scheduled time for changing / stopping papermaking as brand information into the subtractor 44 to calculate the remaining time Ta (min) from the current time to the scheduled time. Seeking,
The remaining time Ta is sent to the x terminal of the switch 45.

Further, the fine adjustment measuring system 43 detects the winding amount of the reel 31 by the winding detector 46 and sends the detection signal to the winding counter 47 to obtain the reel winding measurement value TRR. The subtractor 49 then calculates the difference (TRY-T) between the reel winding measurement value TRR and the reel winding set value TRY.
Calculate the remaining winding length (m) which is RR).

Subsequently, the arithmetic unit 50 causes the remaining winding length (TRY--
TRR) and papermaking speed (production speed) SPEED (m / min)
Is input to obtain the remaining time Tb according to the above equation (1), and this remaining time Tb is sent to the y terminal of the switch 45.

This switching unit 45 determines whether the remaining time Ta obtained by the coarse adjustment measuring system 42 by the comparator 51 is 1 hour, and if the remaining time Ta is not 1 hour, the switching end is selectively connected to the x terminal. To do. As a result, the remaining time T (Ta) obtained by the rough adjustment measurement system 42 is sent to the necessary amount calculator 41.

The required amount calculator 41 receives the remaining time Ta from the switching unit 45 and each head tank delivery amount Fb detected by the flow rate detector 27, and according to the above equation (2), the required amount FNT of the raw material / chemicals. Ask for.

When the paper is manufactured in this way and it is determined that the remaining time Ta has reached one hour, the switch 45 selectively connects the switching end to the Y terminal. As a result, the fine adjustment measurement system 4
The remaining time T (Tb) obtained in 3 is sent to the required amount calculator 41.

Then, the required amount computing unit 41 becomes the switching unit 4
The remaining time Tb from 5 and each head tank delivery amount Fb detected by the flow rate detector 27 are received, and the required amount FNR of the raw material / chemicals is obtained according to the above equation (3). (c) Control before changing paper / stopping paper making The comparator 70 controls the required amount FNT, F from the required amount calculator 41.
When NR is input as FNS and the remaining amount WHzn from the remaining amount calculator 62 is input, and the required amount FNS and the remaining amount WHzn have a relationship of FNS≈WHzn, an ON signal is sent to the AND gate 71.

A high-level signal is sent to the AND gate 71 if the corresponding raw material / chemical as brand information is not used at the next paper changing, or if all raw materials / chemicals are not used due to paper stopping. input.

Therefore, the AND gate 72 determines the required amount FNS.
And the remaining amount WHzn are substantially equal to each other and the raw material / chemicals are not used in the next paper changing / paper stopping, a high level signal is sent to the selector 72.

The selector 72 selectively switches the L terminal by receiving a high level signal from the AND gate 72. At this time, since the set value “0” is input to the L terminal of the selector 72, the set value “0” is sent to the flow rate controller 23.

As a result, the flow rate control by the flow rate controller 23 is stopped and the flow of the raw material / chemicals into the head tank 20 becomes "0", and the raw material / chemicals remaining in the head tank 20 are sent to the mixing tank 26. .

Therefore, when the production of the paper of the brand is completed by changing the paper, or the production of all paper is completed by stopping the paper,
The unused raw materials / chemicals stored in the head tank 20 are
When it is used up, the remaining amount becomes "0".

As described above, in the above embodiment, the required amount of the raw material / chemicals is obtained and the remaining amount of each head tank 20 is obtained, and the required amount of the raw material / chemicals and the remaining amount of the head tank 20 are almost the same. If the raw material / chemicals are not used next time due to the change / stopping of the papermaking, the flow of the raw material / chemicals to the head tank 20 is stopped, and the blending control is performed only by the remaining amount of the head tank 20. The remaining amount of the raw material / chemicals which is not used by changing / stopping the paper can be automatically completely used up to zero and the raw material / chemicals are not wasted.

In this case, the required amount of raw materials / chemicals is
Up to 1 hour before the scheduled time for papermaking stops, it is calculated based on the scheduled time for changing papermaking / papermaking, and within 1 hour before the scheduled time for papermaking change / papermaking stops, the manufactured paper is rolled. Since it is determined based on the remaining winding length on the take-up reel 31 and the paper-making speed, the required amount for rough adjustment is obtained up to 1 hour before the paper-changing / paper-making stop, and the remaining amount of the head tank 20 is calculated within 1 hour. It is possible to obtain the required amount with high accuracy for fine adjustment because it is used up.

Further, when the remaining amount of the head tank 20 is calculated, when the liquid level of the head tank 20 reaches the registered liquid level, the remaining amount is calibrated to the registered storage amount. The remaining amount of 20 can always be obtained accurately. Therefore, the remaining amount of the head tank 20 can be surely used up.

The present invention is not limited to the above-mentioned embodiment, but may be modified as follows. For example, raw material /
The required amount of chemicals is calculated from the remaining time Ta from the scheduled time for changing / stopping paper and the outflow amount from the head tank 20.
And the second method of obtaining from the remaining time Tb based on the remaining winding length on the reel 31 and the paper-making speed and the outflow amount from the head tank 20, the first or second method is adopted. The remaining amount of the head tank 20 can be automatically used up even if only one of the methods is used.

[0069]

As described above in detail, according to the present invention, the residual amount control device of the adjusted papermaking facility can automatically reduce the residual amount of the raw materials and chemicals which are not used due to the change of papermaking and the stopping of papermaking in the head tank. Can be provided.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a residual amount control device for a regulated papermaking facility according to the present invention.

FIG. 2 is a block diagram of a necessary amount calculation means.

FIG. 3 is a configuration diagram of a remaining time measuring function in the necessary amount calculating means.

FIG. 4 is a configuration diagram of a remaining amount calculation means.

FIG. 5 is a diagram showing a control system before paper manufacturing.

FIG. 6 is a diagram showing a control system during paper production.

FIG. 7 is a diagram showing a control system before changing paper / stopping paper.

FIG. 8 is a configuration diagram of a conventional head tank flow rate control device.

[Explanation of symbols]

20 ... Head tank, 26 ... Mixing tank, 30 ...
Paper machine, 31 ... Reel, 40 ... Remaining time measuring function, 41 ...
Required amount calculator, 42 ... Coarse adjustment measurement system, 43 ... Fine adjustment measurement system, 60, 61 ... Integrator, 62 ... Remaining amount calculator, 64 ... Remaining amount calibrator, 70 ... Comparator, 71 ... AND gate, 72 ...
Selector.

Claims (5)

[Claims] 1. A regulated papermaking facility for blending a plurality of paper raw materials and chemicals respectively stored in a plurality of head tanks, and drying the wet paper obtained by this blending to produce a paper. Necessary amount calculating means for obtaining the necessary amount of the raw material and the chemical required for manufacturing, residual amount calculating means for obtaining the residual amount of the raw material and the chemical stored in each head tank, the raw material and the chemical The required amount and the remaining amount in the head tank, and if the required amount and the remaining amount are substantially the same and the raw material and the chemical are not used next time due to the grade change / stoppage, the head tank A residual quantity control device for adjusted papermaking equipment, comprising: a paper changing / paper stopping control means for stopping the inflow of the raw materials and the chemicals into the paper and controlling the blending only by the residual quantity. 2. The required amount calculating means obtains the remaining time from the scheduled time for changing / stopping the papermaking, and obtains the required amount from the remaining time and the outflow amount from the head tank. Remaining amount control device for adjusted papermaking equipment. 3. The required amount calculating means obtains the remaining time based on the remaining winding length of the reel on which the manufactured paper is wound and the papermaking speed, and calculates the required amount from the remaining time and the outflow amount from the head tank. The residual amount control device of the adjusted papermaking facility according to claim 1, wherein the residual amount control device is determined. 4. The required amount calculating means obtains the remaining time from the scheduled time of paper changing / paper stopping until a predetermined time before the scheduled time of paper changing / paper stopping, and the remaining time and the outflow from the head tank. The required amount is calculated from the amount, and within the predetermined time, which is the scheduled time for papermaking change / papermaking stop, the remaining time is obtained based on the remaining take-up length of the reel that winds the manufactured paper and the papermaking speed.
2. The residual amount control device for a regulated papermaking facility according to claim 1, wherein the required amount is obtained from the remaining time and the amount of outflow from the head tank. 5. The remaining amount calculation means registers in advance each storage amount corresponding to each liquid level of the head tank, and registers the remaining amount when the actual liquid level reaches the registered liquid level. The residual quantity control device of the adjusted papermaking equipment according to claim 1, which has a function of calibrating the stored quantity.