JP2005290603A - Paper stock supply unit of high-concentration continuous pulper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper stock supply unit of a high-concentration continuous pulper, capable of continuously supplying the inside of the high-concentration continuous pulper with a suitable amount of already-crushed paper stock timely. <P>SOLUTION: This paper stock supply unit of the high-concentration continuous pulper 1 supplies paper stock 51 to the high-concentration 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 downward discharges the already-crushed paper stock 51 formed by crushing a bale 50, a conveyor 40 which transports the already-crushed paper stock 51 to the high-concentration continuous pulper 1, a controller 46 which controls drive of the high-concentration continuous pulper 1 and the conveyor 40, 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 increases or decreases a transporting speed of the conveyor 40, or stops transportation of the conveyor 40, 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 to a high-concentration continuous pulper that disaggregates paper 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 high-concentration continuous-type pulper that adjusts the supply of the paper according to the liquid level in the type pulper.

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 waste paper and waste paper has so far been charged with a mixture of water and chemicals and stock in a container, and mixed and stirred for a certain period of time. After the disaggregation is completed, 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, the demand for a continuous-type pulper that can continuously take out a paper slurry has been increased and various proposals have been made.

According to the application disclosed in Japanese Patent Application Laid-Open No. 2003-193383, the applicant can continuously obtain a uniform paper slurry with low energy consumption, and a compact continuous type in which miniaturization of foreign matters hardly occurs. Pulper is proposed. In the continuous pulper, the stock supplied from above into 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 sequentially. And it discharges from the outlet provided in the lower part of a vertical cylindrical container.
Supply of the stock to such a continuous pulper is performed, for example, every time a stock slurry in a vertical cylindrical container is discharged, and the time required for disaggregation differs depending on the type of stock to be supplied. When it is necessary to adjust the discharge amount of the material slurry, the rotational speed of the screw feeder is appropriately adjusted.
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. Then, after further diluting to 1 to 4 percent, foreign matters are removed through the screen. In order to keep the stock slurry concentration within a certain range (for example, 18 to 20 percent) with this continuous pulper, it is necessary to adjust the ratio of the solution and the crushed stock in the vertical cylindrical container. At that time, since the crushed paper stock is supplied as a lump, it is preferable to temporarily stop the supply of the crushed paper stock to the continuous pulper and restart the supply after disaggregation progresses.
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. Therefore, conventionally, the crusher has to be operated continuously. However, it is difficult to supply an appropriate amount of the crushed paper stock into the vertical cylindrical container in a timely manner.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a high-concentration continuous pulper stock supply device that supplies an appropriate amount of crushed paper stock into a high-concentration continuous pulper at an appropriate time.

  The paper supply device for a high-concentration continuous pulper according to the present invention is supplied with paper from a supply port provided at the top of a vertical cylindrical container, and a vertical rotating shaft provided with multistage stirring blades in the vertical direction is a vertical type. By rotating in a cylindrical container, the paper stock is mixed with the solution and stirred to create a stock slurry of a predetermined concentration, and the stock slurry is continuously discharged from the lower outlet. A predetermined amount of crushed paper stock is supplied to the pulper, and a bale of paper stock placed between a pair of rotary blades is crushed with the rotary blades as crushed paper stock downward. A crusher to be discharged, a conveyor that conveys the crushed paper stock from below the crusher to the supply port of the high-concentration continuous pulper, and a control device that controls the driving of the high-concentration continuous pulper and the conveyor Liquid level in the vertical cylindrical container A liquid level sensor that measures the above and transmits the measurement signal to the control device, the control device increases or decreases the conveying speed of the conveyor according to the liquid level in the vertical cylindrical container, or The feed of the conveyor is stopped.

In the paper supply device for the high-concentration continuous pulper according to the present invention, the control device detects the upper limit value and the lower limit value based on the measurement signal from the liquid level sensor, and detects the upper limit value. In this case, the conveying speed of the conveyor is lowered, and when the lower limit value is detected, the conveying speed of the conveyor is increased.
Further, the paper supply device of the high-concentration continuous pulper according to the present invention has a stacking state measuring means for detecting a stacking state of the crushed stock released on the conveyor, and the control device includes: Based on the measurement signal sent from the lamination state measuring means, the amount of lamination per unit length on the conveyor is calculated, and the necessary amount of crushed paper stock is fed into the vertical cylindrical container according to the liquid level height. It is characterized by increasing or decreasing the conveying speed of the conveyor to stop or stopping the feeding of the conveyor.
Further, in the high-concentration continuous pulper paper supply device according to the present invention, the stacking state measuring means is a weight sensor for detecting the weight of the crushed paper on the conveyor, or the crushed paper on the conveyor It is an image sensor which detects the lamination state of a material by the shape seen from the side.

Therefore, in the high-concentration continuous pulper stock supply apparatus according to the present invention, the liquid level in the vertical cylindrical container in which the stock slurry is made is measured by the liquid level sensor, and the liquid level is measured according to the liquid level. The conveyor speed for feeding the crushed paper material released from the crusher is controlled, and the supply amount of the crushed paper material to be fed into the high concentration continuous pulper is adjusted.
For example, if the upper limit value and the lower limit value are set for the liquid level height in the vertical cylindrical container and it is detected that the liquid level is the upper limit value, the conveying speed of the conveyor is lowered to While reducing the supply amount per unit time of the crushed stock supplied to the cylindrical container, if it is detected that the liquid level is the lower limit value, increase the conveyor transport speed and supply the unit amount per unit time Increase. Furthermore, in order to supply an appropriate amount of crushed paper stock to a high-concentration continuous pulper, the amount of lamination per unit length on the conveyor is calculated based on the measurement value of a weight sensor, etc., and it is necessary according to the liquid level An appropriate amount of crushed paper stock is put into a vertical cylindrical container.

  Therefore, according to the high-concentration continuous pulper paper supply device according to the present invention, a substantially constant amount of crushed paper is released onto the conveyor by continuous operation of the crusher. By adjusting according to the liquid level height in the continuous pulper, the supply amount of the crushed paper material that is transported by the conveyor and placed in the high-concentration continuous pulper is adjusted. The spent paper stock can be continuously fed into the high concentration continuous pulper.

  Next, an embodiment of a paper supply device for a high concentration continuous pulper according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of a high concentration continuous pulper. As shown in FIG. 1, the high-concentration 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 material 51 is charged at the upper end, and an outlet 13 through which the paper material 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.

  The vertical rotating shaft 14 erected in the vertical cylindrical container 10 has a spiral pulping rotor 17 attached to the uppermost portion, and a plurality of rotors 18 are attached to the upper and lower multistages below. A notch is formed in the pulping rotor 17, and the crushed paper stock 51 put from the supply port 12 falls under the pulping rotor 17 from the notch. On the other hand, the rotor 18 provided in the 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 in the vertical direction on the inner wall of the vertical cylindrical container 10 so as to promote stirring of the crushed paper stock 51 flowing through the interior, and the rotor 18 of each stage. Horizontal ribs 22 project from the intermediate height.
On the other hand, a screw feeder 19 for taking out the paper slurry from the outlet 13 is provided at the bottom of the vertical cylindrical container 10. 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 such a high-concentration continuous pulper 1. That is, a conveyor 40 is disposed between the vertical cylindrical container 10 of the high-concentration continuous pulper 1 and the crusher 30, and the crushed paper material 51 discharged from the crusher 30 and mounted on the conveyor 40 is vertically It is sent to the supply port 12 of the mold cylindrical container 10.
The crusher 30 is a biaxial type having a pair of rotating shafts 32 and 32 in a box-shaped container 31 having a size capable of containing a plurality of bales 50. The plurality of rotary blades 33, 33 provided on the rotary shafts 32, 32 are alternately meshed with each other in the axial direction, and rotate inward from each other.

  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. Therefore, if the operation is stopped in the middle of crushing when the bale 50 is caught in the rotary blades 33, 33, a very large starting force is required when the operation is resumed from the biting state. While the pulper 1 is in operation, 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 make a stock slurry of (18-20 percent).

  Therefore, in this embodiment, the paper supply device for the high-concentration continuous pulper 1 is configured so as to perform the concentration management so that the concentration of the paper slurry discharged from the high-concentration continuous-type pulper 1 becomes 18 to 20 percent. ing. That is, the stock supply device is configured such that the ratio of the crushed stock 51 to the amount of the solution in the vertical cylindrical container 10 becomes an appropriate amount, and according to the liquid level in the vertical cylindrical container 10. Thus, the amount of the crushed paper stock 51 put into the vertical cylindrical container 10 from the conveyor 40 is adjusted.

  In the high-concentration 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 after that, It is necessary to wait until the crushed paper stock 51 sinks down and disaggregation proceeds. 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, as shown in FIG. 2, a liquid level sensor 45 such as an ultrasonic distance meter is installed above the supply port 12 of the vertical cylindrical container 12, and this is controlled. The controller 46 is connected to the conveyor 46, and the controller 46 is connected to the conveyor 40.
The conveyor 40 is provided with a variable speed electric motor 42 on one rotating shaft around which a belt 41 is stretched, and a belt scale 43 that measures the weight of the crushed paper stock 51 that is discharged from the crusher 30 and mounted on the belt 41. Is provided. The variable speed motor 42 and the belt scale 43 are connected to a control device 46.

  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, the control device 46 detects the lower limit value L1 and the upper limit value L2 of the liquid level, so that the liquid level in the vertical cylindrical container 10 varies depending on the height of L1 and L2. That is, in the paper supply device of the present embodiment, the supply amount of the crushed paper material 51 supplied to the high concentration continuous pulper 1 is adjusted by adjusting the conveyance speed of the conveyor 40.

  By the way, of the liquid levels L2, L1, and L3 set in the upper and lower stages, L1 indicating the lower limit value is a height located above the pulping rotor 17 shown in FIG. 1, and further set below L1. The height of the L3 is the position where the liquid level has dropped to just 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 high concentration continuous pulper 1 of the present embodiment, a stock slurry of a predetermined concentration is continuously discharged from the outlet 13 of the 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, but the notch is formed in the pulping rotor 17 so as to be less than one pitch. It falls to. 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, the 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 rotation speed of the rotor 18 is low and flat stirring is performed, the rotor 18 rides on the flow in the rotation direction as a result of the stock in the solution being 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. Since the rotor 18 has a small number of blades in the upper stage, the downward movement is smooth even in an undissolved state. On the other hand, the lower rotor 18 has a larger number of blades, which increases the stirring force. A homogeneous paper slurry will be produced. 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 such agitation, and is taken as a homogeneous stock slurry having a concentration in water 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 depending on the kind of 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 be made. 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 of the present embodiment, the vertical type from the crusher 30 via the conveyor 40 is set so that the concentration of the paper slurry discharged from the high concentration continuous pulper 1 is 18 to 20 percent. The timing and supply amount of the crushed paper stock 51 continuously supplied to the cylindrical container 10 are adjusted.
Specifically, the conveyance speed of the conveyor 40 is changed according to the liquid level in the vertical cylindrical container 10, the supply amount is decreased by the speed decrease, and the supply amount is also increased by the speed increase. At this time, the amount of lamination per unit length of the crushed paper stock 51 discharged onto the conveyor 40 also changes with the change in the conveyance speed, but the supply amount to the high concentration continuous pulper 1 is measured by the belt scale 43. Adjusted to an appropriate amount.

  In the crusher 30 charged with the bale 50, since the rotary blades 33 and 33 rotate at a constant speed, a substantially constant amount of the crushed paper stock 51 is discharged per unit time. Therefore, if the conveying speed of the conveyor 40 is constant, a substantially constant amount of the crushed paper stock 51 is supplied to the high concentration continuous pulper 1 per unit time. However, in the paper supply device of this embodiment, since the supply amount is adjusted according to the liquid level, the liquid level sensor 45 measures the liquid level in the vertical cylindrical container 10 and the measurement signal is sent to the control unit 46. It is sent sequentially. The control device 46 that has received the measurement signal detects a change in the liquid level in the vertical cylindrical container 10.

  Therefore, it is assumed that the solution is put in the vertical cylindrical container 10 and the crushed paper stock 51 is also fed so that the liquid level reaches L2. In the control device 46 that detects that the liquid level is at the L2 position by the measurement signal from the liquid level sensor 45, a low speed drive signal is sent from the control device 46 to the variable speed motor 42 of the conveyor 40, and The conveyance speed of the conveyor 40 falls by the fall. Therefore, the amount per unit time of the crushed paper stock 51 supplied to the vertical cylindrical container 10 is reduced.

In the high-concentration continuous pulper 1, as described above, the crushed paper stock 51 is stirred by the rotation of the pulping rotor 17 and the rotor 18, and is disaggregated in the solution to produce a uniform paper 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, the supply amount of the crushed paper stock 51 is also increased with the increase in the solution from the control device 46. Since it is necessary, a high-speed drive signal is sent from the control device 46 to the variable-speed electric motor 42, and the amount of the crushed paper stock 51 supplied to the vertical cylindrical container 10 by the high-speed conveyance of the conveyor 40 increases.

That is, the crushed paper stock 51 discharged from the crusher 30 by a certain amount is supplied to the vertical cylindrical container 10 per unit time as the conveying speed of the conveyor 40 increases. Will increase. In the vertical cylindrical container 10, the liquid level rises due to the solution thus added and the crushed paper stock 51.
When the controller 46 detects that the liquid level has risen to L2, a low speed drive signal is sent to the variable speed electric motor 42 of the conveyor 40, and the conveying speed is reduced. Therefore, although the crushed paper material 51 is discharged from the crusher 30 by a certain amount, the crushed paper material 51 supplied into the vertical cylindrical container 10 per unit time as the conveying speed of the conveyor 40 decreases. Supply volume decreases.

  By the way, if the conveying speed of the conveyor 40 is changed depending on the liquid level in the vertical cylindrical container 10, a certain amount of the crushed paper stock 51 is discharged from the crusher 32. The distribution change of the laminating material according to the change occurs. Therefore, in order to put an appropriate amount of the crushed paper material 51 into the high concentration continuous pulper at an appropriate timing, it is necessary to grasp the stacking amount distribution of the crushed paper material 51 sent on the conveyor 40. The stacking state of the crushed paper stock 51 mounted on the conveyor 40 is managed by the distribution amount distribution of the crushed paper stock 51 on the conveyor 40 from the value measured by the belt scale 43 as shown in FIG. Find as data.

  In the control device 46, for example, if the section length from the attachment position of the belt scale 43 on the conveyor 40 to the end of the conveyor is L, and the number of measured weights supported by the shift register is n, the pulse counter is set to the distance L / n. Count the corresponding number of pulses. The shift register receives the pulse counter signal and takes in and stores the measured weight. Thus, the measured weights W1 to Wn for each interval L / n are stored in the shift register. In the control device 46, the stacking amount distribution of the crushed paper stock 51 fed on the conveyor 40 is detected by the measured weights W1 to Wn. Therefore, in order to supply an appropriate amount of crushed paper material 51 to the high-concentration continuous pulper 1 at a predetermined timing, the conveyance speed is adjusted according to the liquid level height as described above with reference to the detected distribution of the amount of lamination. Is done.

  That is, the height of the liquid level in the vertical cylindrical container 10 varies so as to move up and down between L1 and L2 by repeating the supply and stop of the solution. Therefore, when the liquid level drops to the height of L1 to which a large amount of solution is supplied, a high-speed drive signal corresponding to the stacking amount distribution is transmitted from the control device 46 to the variable-speed motor 41, and the conveyor 40 continuously performs high concentration. When the supply amount of the crushed stock 51 to the type pulper increases and the liquid level rises to L2, a low speed drive signal corresponding to the stacking amount distribution is transmitted from the control device 46 to the variable speed motor 41, and the conveyor 40 The supply amount of the crushed paper stock 51 to the high-concentration continuous pulper is reduced. By repeating this, the supply amount of the crushed paper stock 51 is adjusted according to the liquid level without stopping the crusher 30.

Therefore, according to the paper supply device of the present embodiment, the conveyance speed of the conveyor 40 is controlled according to the liquid level in the vertical cylindrical container 10, and the rotation of the rotary blade 32 of the crusher 30 is stopped. This makes it possible to supply the crushed paper stock 51 continuously, and to supply a fixed amount of the crushed paper stock 51 in a timely manner due to the 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 belt scale 43 and the control of the control device 46 based on the measured value.

In addition, this invention is not limited to the paper supply apparatus of the said embodiment, A various change is possible in the range which does not deviate from the meaning.
For example, in the above-described embodiment, the load distribution of the crushed paper stock 51 loaded on the conveyor 40 is calculated from the value measured by the belt scale 43. In addition, the crushed paper is provided by providing an image sensor. You may make it detect the lamination | stacking state of the material 51 by the external shape seen from the side.
Further, depending on the stacked state of the crushed paper stock loaded on the conveyor 40, the conveying speed of the conveyor 40 may be increased or decreased and stopped.

It is the figure which showed the whole structure of the high concentration continuous type pulper. It is the conceptual diagram which showed the paper supply apparatus for supplying the crushed paper stock to a high concentration continuous type pulper. It is the figure which showed notionally the method of calculating | requiring the lamination amount distribution of the crushed paper stock on a conveyor as distribution management data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High concentration continuous type pulper 10 Vertical cylindrical container 12 Supply port 17 Pulping rotor 18 Rotor 19 Screw feeder 30 Crusher 33 Rotary blade 40 Conveyor 41 Variable speed engine 42 Belt scale 45 Liquid level sensor 46 Controller 50 Veil 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 rotating shaft with multistage stirring blades on the top and bottom rotates in the vertical cylindrical container, so that the stock is mixed with the solution and stirred. A paper material that supplies a predetermined amount of crushed paper material to a high-concentration continuous pulper that creates a paper slurry of a predetermined concentration by disaggregating it and continuously discharges the paper slurry from the lower outlet. In the supply device,
A crusher that crushes a bale of paper stock placed between a pair of rotary blades with the rotary blade and releases it downward as a crushed paper stock, and the high-concentration continuous pulper from below the crusher A conveyor that conveys the crushed paper stock to a supply port, a control device that controls driving of the high-concentration continuous pulper and the conveyor, and a liquid level height in the vertical cylindrical container that measures the liquid level. A liquid level sensor that transmits a measurement signal to the navel, and the control device increases or decreases the conveying speed of the conveyor according to the liquid level in the vertical cylindrical container, or stops the feeding of the conveyor. A high-concentration continuous pulper paper supply device, characterized by being a thing. In the paper supply apparatus of the high concentration continuous pulper according to claim 1,
The control device detects the upper limit value and the lower limit liquid level based on a measurement signal from the liquid level sensor, and when the upper limit value is detected, lowers the conveying speed of the conveyor and detects the lower limit value. In such a case, the high-concentration continuous pulper paper supply device is characterized in that the conveying speed of the conveyor is increased. In the high-concentration continuous pulper paper supply device according to claim 1 or 2,
It has a lamination state measuring means for detecting the lamination state of the crushed paper material discharged on the conveyor, and the control device is a unit length on the conveyor based on a measurement signal sent from the lamination state measuring means. Calculate the stacking amount per unit, increase or decrease the conveyor speed to feed the required amount of crushed paper stock into the vertical cylindrical container according to the liquid level, or feed the conveyor A high-concentration continuous pulper paper supply device characterized by being stopped. In the high-concentration continuous pulper paper supply device according to claim 3,
The stacked state measuring means is a weight sensor that detects the weight of the crushed paper material on the conveyor, or an image sensor that detects the stacked state of the crushed paper material on the conveyor by a shape viewed from the side. A high-concentration continuous pulper paper supply device.

Images