JP2005290602A - Paper stock supply unit of continuous pulper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper stock supply unit of a continuous pulper, capable of continuously supplying the inside of the continuous pulper with a suitable amount of already-crushed paper stock timely. <P>SOLUTION: This paper stock supply unit of the continuous pulper 1 supplies paper stock 51 to the continuous pulper 1 which makes paper stock slurry having a prescribed concentration by mixing and agitating the paper stock 51 with a solvent in a vertical cylindrical container 10, and defibrating the stock, and continuously discharges the slurry through a lower output port, wherein the paper stock supply unit has a crusher 30 which crushes a bale 50 comprising a lump of the paper stock 51 with a pair of rotary blades 33, 33 and downward discharges the paper stock as the already-crushed paper stock 51, a conveyor 40 which transports the already-crushed paper stock 51 from an area under the crusher 30 to the continuous pulper 1, a controller 46 which controls drive of the crusher 30, and a liquid level sensor 45 which measures a height of a liquid level in the vertical cylindrical container 10 and transmits a measurement signal to the controller 46, so that the controller 46 controls a rotational speed of the rotary blades 33, 33 of the crusher 30 according to the height of the liquid level in the vertical cylindrical container 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is to feed a paper material into a continuous pulper that disaggregates paper materials such as waste paper and waste paper and continuously discharges a stock slurry of a predetermined concentration. The present invention relates to a paper supply device for a continuous pulper that adjusts the supply of paper according to the liquid level.

In recent years, demands for resource conservation and global environmental conservation have increased, and the recycling rate of waste paper and waste paper has increased. Magazines that have been difficult to deink and remove foreign matter, laminated paper containers, etc. Are also being used as paper stock.
A pulper that creates a stock slurry to perform a resource cycle for such materials as used paper and waste paper has so far been put into a container with a mixture of water and chemicals and stock, and mixed and stirred for a certain period of time to disaggregate. After the completion of the process, a so-called batch type in which the discharge port is opened and the entire amount of the paper slurry is taken out has been put into practical use. However, since the batch-type pulper has a long loss time and poor operability, a continuous-type pulper capable of continuously taking out the paper slurry has recently been required and various proposals have been made.

According to the application disclosed in Japanese Patent Application Laid-Open No. 2003-193383, the present applicant can continuously obtain a uniform paper slurry with low energy consumption and is less likely to cause finer foreign matters. Has proposed. In the continuous pulper, the stock supplied from the upper part in the vertical cylindrical container is stirred in the solution by the stirring blades attached to the vertical rotation shaft in multiple stages, and is disaggregated as it moves downward. It discharges from the outlet provided in the lower part of the container.
Supply of paper stock to such a continuous pulper is performed, for example, every time a stock slurry is discharged, and the time required for disaggregation varies depending on the type of stock supplied. Although it is necessary to adjust suitably, in that case, the rotation speed of a screw feeder is adjusted suitably.
JP 2003-193383 A (page 2-3, FIG. 1)

In such a conventional continuous pulper, for example, the concentration of the discharged paper slurry is set to 18 to 20 percent, and after that, the concentration is further reduced to 1 to 4 percent, and then foreign matters are removed through the screen. In order to keep the concentration of the paper slurry in a certain range, it is necessary to adjust the ratio of the solution put into the vertical cylindrical container and the crushed paper stock. At that time, since the crushed paper stock is in a lump, it is preferable that the supply of the crushed paper stock to the continuous pulper is temporarily stopped and then fed again after disaggregation proceeds.
However, if the crusher that crushes the bale that has been compressed and packed is stopped while the bale remains in the rotating blade, a very large amount of power is required when the operation is resumed. Therefore, when the operation is resumed, the power consumption increases, and in the worst case, the biting is strong and the rotary blade may not rotate. For this reason, conventionally, the crusher has to be operated continuously, but it has been difficult to supply an appropriate amount of the crushed paper stock into the vertical cylindrical container in a timely manner.

  Accordingly, an object of the present invention is to provide a paper supply device for a continuous pulper that continuously supplies an appropriate amount of crushed paper stock into a continuous pulper in a timely manner.

  The paper supply device for a continuous pulper according to the present invention is supplied with paper from a supply port provided in the upper part of a vertical cylindrical container, and a vertical rotating shaft having a plurality of stirring blades at the top and bottom has a vertical cylindrical container. By rotating inside, a stock slurry of a predetermined concentration is made by mixing and stirring the stock with the solution and separating, and for the continuous pulper that continuously discharges the stock slurry from the lower outlet, A crusher that supplies a predetermined amount of crushed paper stock and crushes a bale that is a lump of stock put between a pair of rotary blades and discharges it downward as crushed stock. A conveyor that conveys the crushed paper stock from below the crusher to the supply port of the continuous pulper, a control device that controls the driving of the crusher, and the liquid level in the vertical cylindrical container Liquid that measures and transmits the measurement signal to the control device And a level sensor, wherein the controller is to adjust the rotational speed of the rotary blade of the crushing machine according to the liquid surface height of the vertical cylindrical vessel.

Further, in the paper supply device for a continuous pulper according to the present invention, when the control device detects a liquid level height based on a measurement signal from the liquid level sensor and detects an upper limit value, When the rotational speed of the rotary blade of the crusher is reduced and the lower limit is detected, the rotational speed of the rotary blade of the crusher is increased.
Further, in the paper supply device for a continuous pulper according to the present invention, the control device detects a liquid level based on a measurement signal from the liquid level sensor, and the liquid level reaches an upper limit value. The rotational speed of the rotary blade of the crusher is gradually decreased as it approaches, and the rotational speed of the rotary blade of the crusher is increased as the liquid level height approaches the lower limit value.
Furthermore, the continuous pulper paper supply device according to the present invention is characterized in that the crusher rotates its rotary blade by an inverter motor.

Therefore, in the continuous pulper paper supply device according to the present invention, the liquid level in the vertical cylindrical container in which the paper slurry is made is detected by the liquid level sensor, and the liquid level is rotated according to the liquid level. The rotational speed of the blade is controlled, and the discharge amount of the crushed stock from the crusher is adjusted.
For example, when an upper limit and a lower limit are set for the liquid level in the vertical cylindrical container and it is detected that the liquid level is the upper limit, the rotational speed of the rotary blade is reduced and discharged from the crusher. The amount of crushed paper stock per unit time is reduced, and the amount of crushed paper stock supplied to the continuous pulper by the conveyor is reduced. On the other hand, when it is detected that the liquid level is the lower limit value, the rotational speed of the rotary blade is increased to increase the amount of crushed paper material discharged from the crusher per unit time, and the conveyor is turned into a continuous pulper. The amount of crushed stock to be supplied increases.

  Therefore, according to the paper supply device for a continuous pulper according to the present invention, the rotary blade of the crusher is continuously rotated while the rotation speed is adjusted, so that it is conveyed by the conveyor into the continuous pulper. The supply amount of the crushed paper stock to be put in is adjusted, and an appropriate amount of the crushed paper stock can be continuously supplied into the continuous pulper in a timely manner.

  Next, an embodiment of the continuous pulper paper supply device according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a continuous pulper. As shown in FIG. 1, the continuous pulper 1 has a vertical cylindrical container 10 erected on a gantry 11. The vertical cylindrical container 10 has a supply port 12 into which the crushed paper stock 51 is charged at the upper end thereof, and an outlet 13 through which the paper slurry is taken out at the lower side. In the vertical cylindrical container 10, a vertical rotation shaft 14 is rotatably supported at the center in the vertical direction, and a driving force of a motor 15 provided at the lower portion of the gantry 11 is supported on the vertical rotation shaft 14 by a speed reducer 16. It is comprised so that it may transmit via.

  A spiral pulping rotor 17 is attached to the uppermost portion of the vertical rotation shaft 14 erected in the vertical cylindrical container 10, and a plurality of rotors 18 are attached to the upper and lower multistages below the spiral pulping rotor 17. . A notch is formed in the pulping rotor 17, and the crushed paper stock 51 put from the supply port 12 falls from the notch below the pulping rotor 17. On the other hand, the rotor 18 provided in upper and lower stages is formed so that the number of blades is gradually increased such that the upper part has two, the middle part has three, and the lower part has four. ing. This is because the stirring force is increased stepwise by increasing the number of blades from top to bottom.

In addition, a plurality of vertical ribs 21 project from the inner wall of the vertical cylindrical container 10 in the vertical direction so that stirring of the crushed paper stock 51 flowing inside the vertical cylindrical container 10 is promoted. A horizontal rib 22 is projected at an intermediate height of 18.
On the other hand, a screw feeder 19 is provided at the bottom of the vertical cylindrical container 10 for taking out the paper slurry to the outlet 13. The screw feeder 19 can adjust the discharge amount of the paper slurry by controlling the rotation speed of the motor 20. A separator 23 is provided at the tip of the screw feeder 19 to remove foreign substances from the paper slurry discharged from the vertical cylindrical container 10.

The vertical cylindrical container 10 is supplied with chemicals (eg, NaOH, deinking agent, Na ₂ SiO ₃ , H ₂ O ₂ , steam) for deaggregating the stock, and the piping for that purpose is a vertical cylinder. Connected to the container 10. Water is flowed through one line 25 formed by connecting a pipe to the vertical cylindrical container 10, and steam is flowed through the other line 26. Of these lines, the line 25 is branched and divided into two directions. Electromagnetic switching valves 27 and 28 are connected to the respective branch lines, and the electromagnetic switching valve 29 is connected to the other line 26. For example, NaOH, a deinking agent, and Na ₂ SiO ₃ are sent to the secondary side of the electromagnetic on-off valve 27, and H ₂ O ₂ is sent to the secondary side of the electromagnetic on-off valve 28.

  FIG. 2 is a conceptual diagram showing a paper supply device for supplying the crushed paper material 51 to the continuous pulper 1. That is, a conveyor 40 is disposed between the vertical cylindrical container 10 of the continuous pulper 1 and the crusher 30, and the crushed paper stock 51 discharged from the crusher 30 and mounted on the conveyor 40 is a vertical cylinder. It is sent to the supply port 12 of the container 10.

  Next, FIG. 3 is a sectional view of the crusher as viewed from above. The crusher 30 is a biaxial type in which two rotating shafts 32 and 32 are pivotally supported in a box-shaped container 31 having a size capable of containing a plurality of bales 50 (see FIG. 2). Each rotary shaft 32, 32 is provided with a plurality of rotary blades 33, 33, and the rotary blades 33, 33 are alternately arranged in the axial direction. A rotation transmission mechanism 34 is connected to the rotary shafts 32, 32 so that the rotary blades 33, 33 rotate inward. The drive means for rotating the rotary blades 33, 33 adopts an inverter drive system so that the rotation can be accelerated and decelerated, an electric motor 35 is connected to the transmission mechanism 34, and an inverter device 36 is connected to the electric motor 35. ing.

  By the way, in this crusher 30, a plurality of bales 50 are put into a box-shaped container 31, and each bale 50 is bitten between rotating blades 33, 33 that rotate in turn by its own weight. Accordingly, if the operation is stopped in the middle of crushing when the bale 50 is engaged with the rotary blades 33, 33, a very large starting force is required when the operation is resumed from the state in which the bale 50 is engaged. While operating, the crusher 30 is continuously operated. However, on the other hand, if a constant amount of the crushed paper stock 51 is always supplied into the vertical cylindrical container 10, the crushed paper stock 51 becomes too much with respect to the amount of the solution, and the target concentration. It becomes impossible to discharge the paper slurry at (18 to 20 percent).

  Therefore, in the present embodiment, the paper supply device for the continuous pulper 1 is configured so as to perform concentration management so that the concentration of the paper slurry discharged from the continuous pulper 1 is 18 to 20 percent. That is, the paper supply device is such that the ratio of the crushed paper stock 51 to the amount of the solution in the vertical cylindrical container 10 becomes an appropriate amount, and according to the liquid level height in the vertical cylindrical container 10. The amount of the crushed paper stock 51 discharged from the crusher 30 is adjusted.

In the continuous-type pulper 1, when a sufficient solution and the crushed paper stock 51 are once supplied into the vertical cylindrical container 10, the supply amount is reduced so that the crushed paper stock 51 is not increased so much, and the upper crusher 1 is crushed. It is necessary to wait for the paper stock 51 to sink down and disaggregate. Since the liquid level in the vertical cylindrical container 10 drops after a predetermined time, the supply of the crushed paper stock 51 with the solution is increased until the liquid level rises to a certain height again. It is good to do.
Therefore, in the paper supply device of this embodiment, a liquid level sensor 45 such as an ultrasonic distance meter is installed above the supply port 12 of the vertical cylindrical container 10 as shown in FIG. The liquid level sensor 45 is connected to the control device 46, and the control device 46 is further connected to the inverter device 36 of the crusher 30.

  And the liquid level control program is set to the control apparatus 46 of this embodiment, and based on the measurement signal of the liquid level sensor 45, the lower limit L1 and the upper limit L2 of the liquid level shown in FIG. The supply of the solution and the supply amount of the crushed paper stock 51 are adjusted. That is, when the control device 46 detects the lower limit value L1 and the upper limit value L2 of the liquid level, a control signal is sent to the inverter device 37 of the crusher 30, and the liquid level in the vertical cylindrical container 10 becomes L1. Fluctuate with the height of L2. That is, in the paper supply device of this embodiment, the supply amount of the crushed paper 51 supplied to the continuous pulper 1 is adjusted by adjusting the rotation speed of the rotary blades 33 and 33 in the crusher 30. Yes.

  By the way, of the liquid levels L2, L1, and L3 set in the upper and lower stages, L1 indicating the lower limit is a height located above the pulping rotor 17 shown in FIG. 1, and further below L1. The set height of L3 is a position immediately above the pulping rotor-17. Further, L2 indicating the upper limit is a position that is lowered by an arbitrary distance from the supply port 12.

Next, the operation of the continuous pulper 1 and the paper supply device having the above-described configuration will be described.
In the continuous pulper 1 of this embodiment, a stock slurry having a predetermined concentration is continuously discharged from an outlet 13 of a vertical cylindrical container 10 formed at the bottom. Then, since the solution in the vertical cylindrical container 10 and the crushed paper stock 51 are reduced by the discharge of the paper slurry, the solution and the crushed paper stock 51 are appropriately supplied according to the discharge amount, and the inside of the vertical cylindrical container 10 The liquid level is always operated within a certain height range. That is, the paper slurry is made such that the liquid level in the vertical cylindrical container 10 moves up and down between L1 and L2 shown in FIG. 2 as described above.

  The crushed paper stock 51 introduced from the supply port 12 is dissolved in the solution in the vertical cylindrical container 10 and guided downward by the pulping rotor 17. At this stage, some of the crushed paper stock 51 still exists as a lump. However, since the notch is formed in the pulping rotor 17 to be less than one pitch, the lump is removed from the notch. It falls down. On the other hand, since the paper slurry is discharged from the outlet 13 by the screw feeder 19 at the bottom of the vertical cylindrical container 10 as described above, the crushed paper stock 51 supplied from above is sequentially placed in the vertical cylindrical container 10. Will sink toward the bottom. Then, disintegration of the crushed paper stock 51 is gradually advanced by the lower rotor 18 whose number of blades increases as it descends.

  Since the rotor 18 has a low rotational speed and becomes planar agitation, the rotor 18 rides on the flow in the rotational direction as the stock in the solution is stirred. However, since the flow of the paper is prevented by the vertical ribs 21 and the horizontal ribs 22 attached to the inner side wall of the vertical cylindrical container 10, the rotation with the rotor 18 is prevented. The rotor 18 has a small number of blades in the upper stage, so that the downward movement is smooth even in an undissolved state, while the rotor 18 in the lower stage has a larger number of blades, so that the stirring force is increased. Increasing and a homogeneous stock slurry will be created. Moreover, since the stirring force is large in the lower stage, the ability to separate the ink particles adhering to the disaggregation fiber is also increased.

  The stock charged from the supply port 12 descends in the vertical cylindrical container 10 while being disaggregated in the solution by stirring in this way, and is taken as a homogeneous stock slurry having a moisture concentration of about 18 to 20 percent. It is discharged from the outlet 13. In addition, when it is necessary to control the residence time in the vertical cylindrical container 10 by the stock, the amount of the stock slurry discharged per unit time is reduced by reducing the rotation speed of the screw feeder 19. Can do. Then, the discharged paper slurry is further reduced in concentration by 1 to 4 percent, and foreign substances are removed by the separator 23 and conveyed to the subsequent processing step.

Next, in the paper supply apparatus according to the present embodiment, the vertical cylindrical container from the crusher 30 via the conveyor 40 so that the concentration of the paper slurry discharged from the continuous pulper 1 is 18 to 20 percent. The timing of the crushed paper stock 51 continuously supplied to 10 and the supply amount thereof are adjusted.
Specifically, the rotation speed of the rotary blades 33 and 33 of the crusher 30 is adjusted according to the liquid level in the vertical cylindrical container 10, and the unit time of the crushed paper stock 51 discharged from the crusher 30. The amount of crushing per hit is adjusted. Therefore, in the paper supply device, the liquid level sensor 45 measures the liquid level in the vertical cylindrical container 10, and the measurement signal is sequentially sent to the control device 46. And in the control apparatus 46 which received the measurement signal from the liquid level sensor 45, the change of the liquid level in the vertical cylindrical container 10 is confirmed.

  Therefore, it is assumed that the solution is put in the vertical cylindrical container 10 and the crushed paper stock 51 is put therein and the liquid level reaches L2. In the control device 46 that detects that the liquid level is at the position L <b> 2 by the measurement signal from the liquid level sensor 45, a low-speed drive signal is sent from the control device 46 to the crusher 30, and the rotational speeds of the rotary blades 33 and 33. Is dropped. Therefore, the amount of crushing per unit time in the crusher 30 decreases, and a small amount of the crushed paper stock 51 discharged from the crusher 30 is sequentially sent to the lower conveyor 40.

Thus, the crushed paper stock 51 per unit area on the conveyor 40 is reduced, and the supply amount into the vertical cylindrical container 10 is also reduced. In the continuous pulper 1, as described above, the crushed paper stock 51 is agitated by the rotation of the pulping rotor 17 and the rotor 18, and is disaggregated in the solution to produce a homogeneous paper stock slurry. At this time, since the processing capacity for discharging the stock slurry from the outlet 13 is greater than the supply of the crushed stock 51, the liquid level gradually decreases.
Therefore, when the control device 46 detects that the liquid level has dropped to L1 by the measurement signal from the liquid level sensor 45, an open signal is sent from the control device 46 to the electromagnetic valves 27 and 28, and the vertical cylindrical container A solution in which a chemical is added to water is fed into the inside 10. Since the amount of the crushed paper stock 51 is increased as the solution increases, a high-speed drive signal is sent from the control device 46 to the inverter device 36 of the crusher 30 to increase the rotation speed of the rotary blades 33 and 33.

  Therefore, the crushing speed of the bale 50 is increased in the crusher 30, and the amount of the crushed paper stock 51 discharged from the crusher 30 is increased per unit time, and it flows on the conveyor 40 and the vertical cylindrical container 10. Supplied in. In the vertical cylindrical container 10, the liquid level rises due to the solution thus added and the crushed paper stock 51. When it is detected again by the measurement signal from the liquid level sensor 45 that the liquid level has risen to L2, a closing signal is sent from the control device 46 to the electromagnetic valves 27 and 28, and the inside of the vertical cylindrical container 10 is Supply of solution to is stopped. Further, a low speed drive signal is sent from the control device 46 to the inverter device 36 of the crusher 30, and the rotational speeds of the rotary blades 33, 33 are lowered. Therefore, the amount of crushing per unit time in the crusher 30 decreases, and a small amount of crushed paper stock 51 discharged from the crusher 30 is sequentially sent to the lower conveyor 40.

  Here, FIG. 4 is a diagram conceptually showing the relationship between the change in the liquid level in the vertical cylindrical container 10 and the crushing amount of the crushed paper stock 51 in the crusher 10, and the vertical axis represents the liquid The surface height and the amount of crushing are taken, and the horizontal axis takes time. In the paper supply device of this embodiment, for example, when the liquid level is below L1 (t1), the rotational speed of the rotary blades 33, 33 in the crusher 30 is increased to crush the crushed paper 51. When the amount is increased and the liquid surface height exceeds L2 (t2), the rotational speed of the rotary blades 33, 33 in the crusher 30 is decreased to reduce the crushing amount of the crushed paper stock 51. By repeating this, the supply amount of the crushed paper stock 51 is adjusted according to the liquid level without stopping the crusher 30.

By the way, in the paper supply apparatus of the present embodiment, the crushed paper 51 is supplied to the vertical cylindrical container 10 by a control method different from the control described above. FIG. 5 is a diagram showing a time chart when the rotational speeds of the rotary blades 33 of the crusher 30 are controlled according to the liquid level.
Also in this control, the rotational speed of the rotary blades 33, 33 of the crusher 30 is adjusted according to the liquid level in the vertical cylindrical container 10, and the unit time of the crushed paper stock 51 discharged from the crusher 30 is adjusted. The amount of crushing is adjusted.

However, here, as shown in FIG. 5, the liquid level height is sequentially confirmed, and when the liquid level in the vertical cylindrical container 10 approaches L2, a low speed drive signal is sent from the control device 46 to the crusher 30. The rotational speed of the rotary blades 33, 33 is gradually reduced. Therefore, the crushing amount per unit time in the crusher 30 is reduced, and the supply amount of the crushed paper stock 51 into the vertical cylindrical container 10 is also reduced.
On the other hand, the liquid level gradually decreases conversely as the supply amount decreases. Therefore, the liquid level height thus lowered is also sequentially confirmed, and this time, when the liquid level in the vertical cylindrical container 10 approaches L1, a high-speed drive signal is sent from the control device 46 to the crusher 30, and the rotary blade 33, The rotational speed of 33 is gradually increased.

  Accordingly, the crushing speed of the bale 50 is increased in the crusher 30, and the amount of the crushed paper stock 51 discharged from the crusher 30 is increased per unit time, so that the solution and the crushed paper stock are contained in the vertical cylindrical container 10. 51 raises the liquid level. When the measurement signal from the liquid level sensor 45 again detects that the liquid level has approached L2, the rotational speeds of the rotary blades 33 and 33 are reduced.

Therefore, according to the stock supply apparatus of the present embodiment, the crusher 30 is controlled according to the liquid level height in the vertical cylindrical container 10 and the rotation speed of the rotary blade 32 is changed to continuously crush. In addition to enabling the supply of the used paper stock 51, it becomes possible to supply a fixed amount of the crushed paper stock 51 in a timely manner due to a change in the liquid level.
This can be achieved by a simple configuration based on the measurement by the liquid level sensor 45 and the control of the crusher 30 by the control device 46.
Further, by using an inverter motor as a driving means for rotating the rotary blades 33, 33 of the crusher 30, the rotary blades 33, 33 are rotated at an appropriate rotational speed, thereby crushing an appropriate amount of the crushed paper stock 51. Thus, it could be supplied to the continuous pulper 1.

  As mentioned above, although one Embodiment of the paper supply apparatus of the continuous-type pulper based on this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.

It is the figure which showed the whole structure of the continuous-type pulper. It is the conceptual diagram which showed the paper supply apparatus for supplying the crushed paper stock to a continuous-type pulper. It is sectional drawing which looked at the crusher from upper direction. It is the figure which showed notionally the relationship between the change of the liquid level height in a vertical cylindrical container, and the crushing amount of the crushed paper stock in a crusher. It is the figure which showed the relationship between the change of the liquid level height in a vertical cylindrical container, and the rotation speed of the rotary blade in a crusher.

Explanation of symbols

1 Continuous Pulper 10 Vertical Cylindrical Container 12 Supply Port 17 Pulping Rotor
18 Rotor
19 Screw feeder 30 Crusher 33 Rotary blade 35 Electric motor 36 Inverter device 40 Conveyor 45 Liquid level sensor 46 Control device 50 Bale 51 Crushed paper stock

Claims (4)

The stock is supplied from the supply port provided in the upper part of the vertical cylindrical container, and the vertical rotation shaft with multistage stirring blades on the top and bottom rotates in the vertical cylindrical container. A paper supply device that supplies a predetermined amount of crushed paper to a continuous pulper that builds a paper slurry of a predetermined concentration by disaggregating it and continuously discharges the paper slurry from the lower outlet. In
A crusher that crushes a bale that is a lump of stock put between a pair of rotary blades and discharges it downward as a crushed stock, and a supply port of the continuous pulper from below the crusher A conveyor for conveying the crushed paper stock, a control device for controlling the driving of the crusher, and a liquid for measuring the liquid level in the vertical cylindrical container and transmitting the measurement signal to the control device A continuous pulper paper having a surface level sensor, wherein the control device adjusts the rotational speed of the rotary blade of the crusher according to the liquid level in the vertical cylindrical container Fee supply equipment. The paper supply device for a continuous pulper according to claim 1,
The control device detects the liquid level height based on the measurement signal from the liquid level sensor, and when the upper limit value is detected, the rotation speed of the rotary blade of the crusher is decreased and the lower limit value is detected. In such a case, the continuous pulper paper supply device is characterized in that the rotational speed of the rotary blade of the crusher is increased. The paper supply device for a continuous pulper according to claim 1,
The control device detects the liquid level based on a measurement signal from the liquid level sensor, and gradually decreases the rotational speed of the rotary blade of the crusher as the liquid level approaches an upper limit value, A paper supply device for a continuous pulper, wherein the rotational speed of the rotary blade of the crusher is increased as the liquid level approaches the lower limit. In the paper supply device for a continuous pulper according to any one of claims 1 to 3,
The continuous pulper paper supply device, wherein the crusher rotates its rotary blade by an inverter motor.

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