JPH07163964A - Waste paper treating device - Google Patents

Abstract

PURPOSE:To provide a waste paper treating device capable of accelerating penetration of a surfactant soln. into waste paper floating by enlosing air in an opening tank. CONSTITUTION:A surfactant soln. supplying means for supplying the surfactant soln. 5 for opening the waste paper 31 to a fibrous form into the opening tank 6 in accordance with the result of detection with a water level detecting means 37 is composed of a pump 21 for delivering the surfactant soln. for replenishment from the inside of a tank 20, a piping 60 which is connected at one end to the pump 21 side and extended at the other end to the upper part in the fibrillating tank 6 and a first shower 61 which is mounted at the other end of this piping 60 by disposing its water spouting ports to face the inside of the fibrillating tank 6. As a result, the surfactant soln. for replenishment is sprinkled by the first shower 61 to the waste water floating by enclosing the air when the water level in the fibrillating tank 6 falls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus for disposing a huge amount of waste paper produced in government offices and offices by a wet method.

[0002]

2. Description of the Related Art A huge amount of waste paper is produced every day in government offices and offices, but it is not possible to throw it away as it is mainly because of confidentiality, and the person in charge is struggling to cope with it. It is the reality. As a method for treating such waste paper, generally, incineration or shredding with a document shredder is performed. However, the method of incineration, whether in the suburbs or in the suburbs, is difficult to equip each office with a small incinerator in the city center because of safety and flue gas treatment. In addition, the processing method using a document shredder is an effective processing method from the viewpoint of maintaining confidentiality, but since waste paper is shredded in a dry state, the fibers of the waste paper are also cut at the same time, and shredded. It is difficult for the waste paper afterwards to become a raw material for recycled paper. Furthermore, since the shredded paper pieces are more bulky after being shredded than before being shredded, it is not easy to store or transport the waste.

In order to overcome such a situation, the present applicant disintegrates waste paper in a surfactant solution in a swirl flow generated by rotation of a stirrer to obtain suspended water of the disentangled material. After
This defibrated material suspended water is introduced into a pressure vessel, compressed by a cylinder, dewatered, and molded into a defibrated material block of a predetermined size, so that the waste or treated waste can be stored or transported. A waste paper processing apparatus that is easy to process and suitable as a raw material for recycled paper and that can increase the recovery rate and the production yield of waste paper pulp has been developed and has already been proposed (Japanese Patent Laid-Open No. Hei 5-
No. 200377).

This will be described in more detail with reference to FIGS. 3 is a front sectional view showing the overall configuration of a conventional waste paper processing apparatus, FIG. 4 is a left side sectional view thereof, and FIG. 5 is a right side sectional view thereof. As is well known, the conventional waste paper processing apparatus 1 has a waste paper supply unit A, a defibration unit B, a defibrated material compression unit C, a surfactant solution supply unit D, and a defibration device from the upper part to the lower part in the main body. The article recovery unit E is arranged and configured.

The waste paper supply unit A has a waste paper insertion table 3 which can be concealed by the cover 2, and a waste paper feeder 4 which sends the waste paper from the waste paper insertion table 3 to the defibration unit B in the subsequent stage.

The defibrating unit B has the following structure.
That is, a defibration tank 6 in which the surfactant solution 5 is stored,
A stirrer 7 and an ultrasonic oscillator 8 arranged at the bottom of the defibrating tank 6 to stir the surfactant solution 5, and a stirrer driving motor arranged on the lower surface of the defibrating tank 6 and directly connected to the rotating shaft of the stirrer 7. 9 and the defibrated material suspended water of waste paper defibrated into small pieces or fibers in the surfactant solution in the defibrating tank 6 to the defibrated material compressing section C in the subsequent stage by utilizing its liquid pressure. A defibrated material suspension water introduction port 10 for introducing and a surfactant solution 5 in the defibration tank 6
And a level switch 11 for detecting the water level.

The defibrated material compression section C has the following structure. That is, the defibrated material suspended water inlet 1 is placed horizontally
A cylinder 12 communicating with 0, and a rotatably arranged inside the cylinder 12 driven by a belt transmission by a motor (not shown),
A screw conveyor 13 that conveys the defibrated material suspended water introduced from the defibrated material suspended water introduction port 10 toward the tip of the cylindrical body 12.
And is horizontally arranged so that the intermediate portion communicates with the tip of the cylindrical body 12,
A pressure vessel 14 with both ends open, a defibration material pressing cylinder 15 arranged on the central axis of the pressure vessel 14 and having a piston inserted from one end opening of the pressure vessel 14, and on the central axis of the pressure vessel 14. A defibrated material backup cylinder 17 in which a piston, which is arranged and includes a pressing plate 16, is set to be able to close the other end side opening of the pressure vessel 14, and a pressure vessel outside the other end side opening of the pressure vessel 14 The defibrated material ejecting cylinder 19 is arranged in a direction orthogonal to the central axis of 14 and has a piston composed of an extruding plate 18 movably set along the opening surface on the other end side of the pressure vessel 14.

The surfactant solution supply section D has the following structure. That is, a tank 20 in which a surfactant solution for replenishment is stored, and a pump 21 and a pipe 22 for transporting the surfactant solution in the tank 20 to the defibration tank 6 based on the detection result of the level switch 11. , A drain pipe 23 for returning the overflowed surfactant solution or defibrated material suspension water into the tank 20, and an interface arranged below the defibrated material compression section C and leaking from the defibrated material compression system such as the pressure vessel 14. Tank 20 for activator solution or defibrated material suspension water
It has drain pan 24 returned inside.

In the defibrated material collecting section E, the defibrated material is dewatered by the pressure of the defibrated material pressing cylinder 15 and the defibrated material backup cylinder 17 and extruded by the defibrated material pushing cylinder 19 to fall. It has a bucket 26 that receives the block 25 below. Further, a hydraulic pump 27 for supplying pressure oil to each cylinder of the above-described defibrated material compression system is installed in the lower part of the main body.

Next, the operation of the conventional waste paper processing apparatus having the above structure will be described with reference to FIGS. Further, here, it is assumed that the surfactant solution is stored in advance in the defibration tank up to the set water level, and a swirling flow is generated by the rotation of the stirrer. First, in the processing of waste paper, the cover 2 is opened, the waste paper is placed on the insertion stand 3 in a stacked manner, and the cover 2 is closed. In the control system, the load current of the agitator drive motor 9 is constantly checked, and it is determined whether or not there is room to receive the waste paper in the defibration tank 6 by increasing or decreasing the load current of the agitator drive motor 9, and the load current Is reduced, the feeder 4 is activated,
The waste paper on the insertion stand 3 is put into the defibration tank 6 one by one or two. The waste paper put in the defibration tank 6 is the surfactant solution 5
Is softened by the permeation of the liquid and is further stirred by the swirling flow generated by the stirrer 7 in the defibration tank 6 and the vibration generated by the ultrasonic oscillator 8 to be disentangled and broken into small pieces or fibers. .

The defibrated material suspended water of the waste paper disintegrated into small pieces or fibers in the surfactant solution 5 in the defibrated tank 6 is the defibrated material suspended water inlet at the lower part of the defibrating tank 6. The screw conveyor 13 enters from 10 to the inside of the cylinder 12, is conveyed toward the tip end of the cylinder 12 by the screw conveyor 13 that is constantly rotating, and is sent into the pressure container 14. The control system constantly checks the load current of the drive motor of the screw conveyor 13 and determines whether the amount of defibrated material in the pressure vessel 14 has reached a predetermined amount by increasing or decreasing the load current of the drive motor to determine the load. When the current increases, the screw conveyor 13 is stopped or slowed down. In addition,
In the case of a small type in which the fluctuation width of the load current of the drive motor of the screw conveyor 13 is small and the fluctuation of the load current is difficult to detect due to the influence of noise, the amount of defibrated material in the pressure vessel 14 reaches a predetermined amount. In some cases, whether or not to do so is determined by the drive time of the drive motor. When the screw conveyor 13 is stopped or decelerated, the defibrated material pressing cylinder 15 is activated to start pressing the defibrated material in the pressure vessel 14. Since the back surface of the defibrated material in the pressure vessel 14 is supported by the defibrated material backup cylinder 17, the defibrated material pressing cylinder 15 is provided in the pressure vessel 14.
Of the defibrated material and the piston composed of the pressing plate 16 of the defibrated material backup cylinder 17 removes water, and the defibrated material block 25 has the same shape as the space surrounded by these pistons and the inner wall of the pressure vessel 14. Is molded into. In the control system, it is judged whether the press, that is, the water removal is completed, by the press pressure of the defibrated material press cylinder 15 or the elapsed time, and the press pressure is set to a set value (for example, 1200 Kg / c).
m ² ), or when the pressing time has passed a predetermined time (for example, 20 seconds), once the defibrated material pressing cylinder 1
After stopping the operation of No. 5, the defibrated material backup cylinder 17 is operated, and the pressing plate 16 is retracted to the position shown by the dotted line in FIG. Next, defibrated material press cylinder 1
5 is actuated again to further extend the piston, and the dewatered defibrated material block 25 is pushed to the outside of the pressure vessel 14.

When the defibrated material is pressed in the pressure vessel 14, the piston of the defibrated material pressing cylinder 15 has a discharge passage for allowing the surfactant solution removed from the defibrated material to escape backward. Although the defibrated material is formed at a plurality of locations, the defibrated material also escapes slightly during pressing from the discharge passage, so the defibrated material block 25 that has been water-removed by the press has the above-mentioned discharge passage portion as burrs. Remain. Therefore, even if the defibrated material block 25 after pressing is extruded to the outside of the pressure vessel 14 by the defibrated material pressing cylinder 15, the defibrated material block 25 is placed in a state of being caught by the pressure vessel 14 at the burr portion. . The defibrated material pushing cylinder 19 is provided to remove the burr of the defibrated material block 25. Therefore, the defibrated material block 25 is not
Cylinder 19 for defibrated material extruding while being caught on
When the pushing plate 18 which is the piston is moved along the opening surface on the other end side of the pressure vessel 14 to the position shown by the dotted line in FIG. 3, the defibrated material block 25 pushes the pushing plate 18 from the side. It is forcibly peeled off from the pressure vessel 14 under pressure and falls into the bucket 26. The above operation is continuously repeated to generate the block 25 in which the defibrated material is molded.

In the control system, if the water level of the surfactant solution 5 in the defibration tank 6 detected by the level switch 11 is lower than the set water level, the pump 21 is driven to remove the surfactant solution in the tank 20. It is replenished in the defibration tank 6 through the pipe 22, and the surfactant solution 5 is controlled so as to be constantly held in the defibration tank 6 at a constant amount. The overflowed surfactant solution and defibrated material suspension water are returned to the tank 20 through the drain pipe 23. Further, the surfactant solution and defibrated material suspension water leaking from the defibrated material compression system such as the pressure vessel 14 are received by the drain pan 24 and returned to the tank 20.

By the way, in order to dispose of the waste paper by the wet method, in addition to the above-mentioned apparatus, the waste paper is swelled in normal water, and the swollen waste paper is released by the shearing force of the rotating blades of the propeller and the screw conveyor. After defibration to obtain suspended water of defibrated material, the defibrated material suspended water is collected in a defibrated material supplement container such as a wire net and drained (JP-A-4-126882, JP-A-4-126882). No. 4-126883), the defibrated material suspended water is drained to some extent by utilizing the compressive force of the screw conveyor, and then collected in a defibrated material supplementary container such as a wire mesh and drained again (Japanese Patent Laid-Open No. Hei 10 (1999) -109815). 4-2636
82, JP-A-4-263683), a method in which suspended water of defibrated material is collected in a defibrated material supplement container such as a wire mesh and then dehydrated by a centrifugal separator dehydrator (Japanese Patent Application Laid-Open No. 4-2063).
No. 126884, JP-A-4-272285)
and so on.

[0015]

However, the replenishing surfactant solution (the suspended water of the defibrated material after the start of operation) is supplied by the pump 21 through the pipe 22 to the crevices of the water surface in the defibrating tank 6. In the former one, the waste paper immediately after being put into the defibration tank 6 cannot be bathed with the surfactant solution to the waste paper wrapped in air and floating, and the waste paper wrapped in air Will delay the penetration of the surfactant solution,
It took time to disentangle.

The latter, which collects the suspended water of the defibrated material in a defibrated material supplement container basically consisting of a wire net and drains it, is not sufficiently dehydrated, and further defibrated after dehydrated Since it is not possible to block the waste, there was a problem in handling the waste. Furthermore, the defibrated material supplement container made of wire mesh or the like requires a cleaning treatment before reuse.

The present invention has been made to solve the above problems and is a waste that can promote the permeation of the surfactant solution into the floating waste paper that is wrapped in air in the defibrating tank. An object is to provide a paper processing device.

[0018]

A waste paper processing apparatus according to the present invention has the following configuration. That is, based on the detection result of the water level detection means, the surfactant solution is supplied from the surfactant solution supply means into the defibration tank, and the waste paper loaded into the defibration tank in which the surfactant solution is stored In the waste paper processing device, which disintegrates fiber into fibers and conveys the disintegrated material suspended water of the disintegrated waste paper to the defibrated material compression means, and forms the block shape by the defibrated material compression means, a surfactant solution The supply means is a pump for sending out the replenishing surfactant solution from the tank, one end is connected to the pump side, the other end is a pipe extending to the upper part of the defibration tank, and the fountain port is used for the defibration tank. And a first shower attached to the other end of the pipe so as to face inward.

Further, the defibrated material compressing means is arranged at a position higher than the water surface in the defibrating tank, and the defibrated material block formed by the defibrated material compressing means is guided to the defibrated material collecting portion. A pedestal is provided, and a large number of small holes are formed in the pedestal to return the water leaked from the defibrating material compression means to the defibration tank. Is provided, and the second shower is attached to the tip of the branch pipe with the fountain port facing the lower surface of the pedestal.

Further, a passage for returning the waste of the defibrated material discharged together with the defibrated material block into the defibration tank is provided outside the end of the defibrated material block discharge side of the cradle, and the second A part of the shower fountain is formed toward the passage.

[0021]

In the present invention, when the water level detecting means detects that the water level in the defibration tank has dropped, the pump is actuated and the first surface activity consisting of the tank, the pump, the piping, and the first shower is activated. The replenishment surfactant solution is sprayed from the agent solution supply system toward the inside of the defibration tank, and the replenishment surfactant solution is poured onto the waste paper which is wrapped in air and floats. This promotes the permeation of the surfactant solution into the floating waste paper that encloses the air.

Further, the defibrated material compressing means is arranged at a position higher than the water surface in the defibrating tank, and the defibrated material block formed by the defibrated material compressing means is guided to the defibrated material collecting portion. A pedestal is provided, and a large number of small holes are formed in the pedestal to return the water leaked from the defibrating material compression means to the defibration tank. According to the configuration in which the second shower is installed with the branch pipe provided with the fountain port facing the lower surface of the pedestal at the tip of the branch pipe, when the water level in the defibration tank decreases and the pump operates, the tank, From the second surfactant solution supply system consisting of a pump, piping, a branch pipe, and a second shower, the replenishment surfactant solution is sprayed toward the lower surface of the pedestal and adheres to the small holes of the pedestal. Rinse away the defibrated material scraps and return them to the defibration tank.

Further, a passage is provided outside the end of the receiving table on the discharge side of the defibrated material block for returning the waste of the defibrated material discharged together with the defibrated material block into the defibration tank. Two
According to the configuration in which a part of the fountain opening of the shower is formed toward the passage, when the water level in the defibration tank decreases, the supplemental surfactant solution is spouted from the second shower toward the passage, Rinse the defibrated material debris caught in the middle of the passage and return it to the defibration tank.

[0024]

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a right side sectional view showing an overall configuration of a waste paper processing apparatus according to an embodiment of the present invention, and FIG. 2 is a front sectional view thereof. In each drawing, parts corresponding to conventional ones are given the same reference numerals. I am doing it.
The waste paper processing apparatus 30 of the present embodiment is provided with a waste paper supply section A, a defibrated material compression section C, a defibrated section B, a surfactant solution supply section D and a defibrated material recovery from the upper part to the lower part in the main body. The section E is arranged and configured. That is, in the waste paper processing device 30 of the present embodiment, the defibrated material compression unit C is arranged above the defibration unit B. In the following description, for ease of understanding,
The defibrated material compression unit C will be described after the description of the defibrated unit B.

First, in the waste paper supply unit A, a large number of waste papers 31 are stacked and placed on the waste paper insertion table 3, and based on the detection result of a density sensor which will be described later, the waste papers insertion table 3 is provided at a subsequent stage. The waste paper feeder 4 feeds the waste paper 31 to the defibrating unit B one by one or two.

The defibrating unit B has the following structure.
That is, a defibration tank 6 in which the surfactant solution 5 is stored,
A stirrer 7 installed at the bottom of the defibrating tank 6 for stirring the surfactant solution 5, a pulley 33 attached to a rotating shaft 7a penetrating the bottom of the defibrating tank of the agitator 7, and a driving force applied to the pulley 33 A stirrer drive motor 9 that drives the stirrer 7 and is connected via a belt 34 for transmission and a pulley 35.
And a concentration sensor 36 for detecting the concentration (viscosity) of suspended water of defibrated material of waste paper defibrated into small pieces or fibers in the surfactant solution 5 in the defibration tank 6, and the defibration tank 6 And a float switch 37 for detecting the water level of the surfactant solution 5 (suspended water of defibrated material after the start of operation).

In this defibrating section B, the density sensor 36
Is composed of a switch or the like having an operating portion 36a composed of a chain or a flexible bar, and the operating portion 36a is a surfactant solution 5 in the defibrating tank 6 (suspension water of defibrated material after the start of operation).
It is installed so that it is suspended or inserted by its own weight. Then, when the load (fluid friction) received from the swirling flow generated by the agitator 7 in the defibration tank 6 increases and exceeds the reference value, the switch is turned on. That is, when the fluid friction is small (the concentration of defibrated material suspended water is low), the waste paper 3 is fed to the waste paper feeder 4 of the waste paper supply unit A.
When the discharge of No. 1 is permitted and the fluid friction is large (when the concentration of the defibrated material suspended water is high), the discharge of the waste paper 31 to the waste paper feeder 4 of the waste paper supply unit A is stopped.

The defibrated material compression section C has the following structure. That is, a large number of small holes 38a for allowing water to escape are formed on the peripheral wall and are erected in the defibration tank 6, and a defibrated material suspension water introduction port 38b is formed in a notch on one side of the lower portion, A cylinder 38 whose upper end projects above the water surface, and a cylinder 3
8, a screw conveyor 39 that is rotatably arranged and the lower end of the shaft portion 39a penetrates the defibrating tank bottom portion, and a pulley 40 attached to the defibrating tank bottom penetrating end of the shaft portion 39a of the screw conveyor 39. , A belt 41 for transmitting a driving force to the pulley 40, and a conveyor driving motor 43 connected via the pulley 42, and an upper portion of the defibrating unit B, that is, a position higher than a set water level in the defibrating tank 6. And a middle portion communicates with the upper end of the tubular body 38, one end is opened, and a large number of small holes 44a for allowing water to escape are formed in the peripheral wall except the upper portion on the opening end side. Material block molding cylinder 44 and defibrated material block molding cylinder 4
The cylinder 4 for defibrated material, which is arranged on the central axis of 4 to close the other end of the defibrated material block forming tubular body 44 and in which the piston rod 45 is inserted from the other end of the tubular body.
6 and the piston rod 4 of the defibrated material press cylinder 46
5 is attached to the front end, and the rear end side 47a is set to have a diameter dimension capable of maintaining airtightness with the inner wall of the defibrated material block forming cylinder 44 by a piston ring (not shown), and the front end side 47b is defibrated material block. A stepped cylindrical piston 47 set to a diameter dimension such that a gap 48 is formed between it and the inner wall of the molding cylinder 44, and attached to the tip of the piston 47,
A large number of radial first grooves 4 having a V-shaped cross section on the tip surface.
9a is formed, and the pressing plate 49 is provided with a large number of second grooves 49b having a V-shaped cross section, which are formed on the peripheral surface and connect the respective radial first grooves 49a and the gaps 48 to each other. Further, a defibrated material pushing cylinder 50 arranged outside the one end side opening of the defibrated material block forming cylinder 44 and in a direction orthogonal to the central axis of the pressure vessel 14 in a horizontal plane.
And the piston rod 51 of the defibrated material pushing cylinder 50
Cylinder body 4 for attaching defibrated material block to the tip of
4, an extruding block 52 in which a guide groove 52a extending in the piston rod axial direction is formed on the surface opposite to the surface facing the one end side opening surface, and one end side of the defibrated material block forming cylinder 44 in the extruding block 52. A solution having a large number of parallel grooves 53a having a V-shaped section extending in the horizontal direction, which is attached to the surface opposite to the opening surface and is provided on the surface facing the opening surface on one end side of the defibrated material block molding cylinder 44. The pressing plate 53 for backing up the fiber is arranged on the back side of the extrusion block 52, that is, on the surface side of the extrusion block 52 where the guide groove 52a is formed, and the guide groove 5 is provided on the surface facing the extrusion block 52.
Guide 5 which is fitted into 2a and guides the extrusion block 52
And a backup member 54 provided with 4a. Further, the defibrated material pressing cylinder 46, the defibrated material block forming cylinder 44, the extrusion block 52 including the pressing plate 53, and the backup member 5 including the guide 54a.
4, a plurality of tie rods 55 are attached to the peripheral portion of the backup member 54 and the other end to the casing of the defibrated material press cylinder 46 so as to be integrated with each other in a cage shape. A large number of small holes 56a are formed and are horizontally arranged at the edge of the lower edge of the opening surface on the one end side of the defibrated material block molding cylinder 44, and the solution is extruded from the defibrated material block molding cylinder 44 after pressing. A pedestal 56 that receives the fiber block and guides it to the defibrated material collecting section E in the subsequent stage, and a parallel groove 53 of the pressing plate 53 for backing up the defibrated material during pressing.
The moisture discharged from a or the defibrated material that is extruded together with the defibrated material block when the defibrated material block received by the receiving table 56 is extruded to the defibrated material recovery section E by the defibrated material extruding cylinder 50. A wall body 58 forming a passage 57 for returning wastes into the defibration tank 6.
Have and.

In the defibrated material compression section C, the large number of small holes 38a of the tubular body 38 and the large number of small holes 44a of the defibrated material block forming tubular body 44 are all formed from the inner surfaces of the respective cylindrical bodies. It is formed in a taper shape that expands toward the outer surface in a divergent manner toward the outside, whereby the water separated from the defibrated material in the defibrated material suspended water conveyed by the screw conveyor 39 in the tubular body 38 (surface activity Agent solution) and the water (surfactant solution) exuded from the defibrated material compressed by the defibrated material pressing cylinder 46 in the defibrated material block forming cylinder 44 efficiently. Can be discharged into.
That is, even if the defibrated material is mixed in the water, the small holes 38a, 44a are tapered as described above, so that the small holes 38a, 44a are mixed with the defibrated material.
It is possible to prevent clogging of a.

Therefore, in the defibrated material compression section C, the screw conveyor 3 is driven by the conveyor driving motor 43.
When 9 is rotated, the defibrated material suspended water of the waste paper in the defibrated tank 6 enters the tubular body 38 through the defibrated material suspended water inlet 38b, and the water (surfactant solution) is removed from the tubular body 38. Each small hole 38a
While being discharged into the defibrating tank 6, the defibrated material is conveyed toward the upper end of the tubular body and fed into the defibrated material block forming tubular body 44. Further, when the defibrated material pressing cylinder 46 is operated and the piston rod 45 is extended while the opening surface on one end side of the defibrated material block forming cylinder 44 is closed by the pressing plate 53, the defibrated material block molding is performed. The defibrated material in the defibrating material block 44 is pressed by the pressing plate 49 on the defibrating material pressing cylinder 46 side and the pressing plate 53 on the backup member 54 side in the defibrating material block forming cylinder 44. After removing water, these pressing plates 4
9, pressing plate 53, and defibrated material block forming cylinder 4
The defibrated material block having the same shape as the space surrounded by the inner wall of 4 is formed. In the process of forming this defibrated material block,
Moisture (surfactant solution) removed from the defibrated material is partially inside the gap 48 from each radial first groove 49a on the tip surface of the pressing plate 49 through each second groove 49b on its peripheral surface. After entering into the defibrated material, the defibrated material is molded into the defibration tank 6 below through the small holes 44a of the tubular body 44 for forming the defibrated material. In addition, a part of the water content (surfactant solution) removed from the defibrated material is pressed by the pressing plate 53.
The water (surfactant solution) flowing to both sides along the parallel groove 53a of the parallel groove 53a and flowing to one side of the parallel groove 53a (the right direction in FIG. 2) is dropped directly into the defibration tank 6 and The water (surfactant solution) flowing to the other side (leftward in FIG. 2) is returned from the passage 57 into the defibration tank 6. Furthermore, the pressing plate 5
The water (surfactant solution) that has leaked onto the receiving table 56 through the wall surface of No. 3 drops into the defibrating tank 6 through the small holes 56 a of the receiving table 56. Further, when the defibrated material pushing cylinder 50 is operated to retract the piston rod 51, the pushing block 52 and the pressing plate 53 integrated with the pushing block 52 are guided by the guide 54a on the back side thereof to form the defibrated material block. The one end side opening surface of the defibrated material block molding cylinder body 44 is released by sliding backward (rightward in FIG. 2) on the pedestal 56 along the one end side opening surface of the use cylinder body 44. Further, from the state where the piston rod 51 is in a retracted state, that is, the defibrated material block that has been water-removed and molded by the press is pressed by the defibrated material pressing cylinder 46 from the inside of the defibrated material block forming cylinder 44 onto the pedestal 56. When the defibrated material extruding cylinder 50 is actuated to extend the piston rod 51 from the state where the defibrated material is extruded, the extruding block 52 and the pressing plate 53 are guided by the guide 54a, and the defibrating material block forming cylinder is formed. Slide forward on the pedestal 56 (leftward in FIG. 2) along the opening surface on one end side of the body 44, and extrude the defibrated material block to the defibrated material recovery section E in the subsequent stage, and at the same time for forming the defibrated material block The opening surface on one end side of the cylindrical body 44 is closed. In the process of extruding this defibrated material block to the defibrated material recovery section E in the subsequent stage, water droplets of the surfactant solution adhering to the surface of the receiving table 56 and defibrated material debris are also included.
Although the extruding block 52 and the pressing plate 53 extrude together with the defibrated material block, these water droplets and debris cannot pass over the passage 57, that is, the upper end opening portion of the wall 58, and thus fall into the passage 57 and unwind. It is returned to the fiber tank 6.

In the defibrated material compressing section C, a cylinder is used as the drive source of the piston fiber of the defibrated material compression system, but the present invention is not limited to this. The piston rod may be driven by a gear mechanism.

The surfactant solution supply section D has the following structure. That is, the tank 20 in which the replenishing surfactant solution is stored, and the pump 21 for discharging the replenishing surfactant solution from the tank 20 based on the detection result of the float switch 37 in the defibrating tank 6 and the discharge. Pipe 59 and a pipe having one end connected to the discharge pipe 59 and the other end extending to the upper part in the defibration tank 6, that is, the first branch pipe 6
0, a first shower 61 attached to the other end of the first branch pipe 60 with the fountain port facing inward of the defibration tank 6, one end connected to the discharge pipe 59, and the other end The second branch pipe 6 extending below the pedestal 56 of the defibrated material compression section C in the defibration tank 6.
2 and a passage 57 in the wall 58 of the pedestal 56 and the fountain
And a second shower 63 attached to the other end of the second branch pipe 62, and a drain pipe (not shown) for returning the overflowed surfactant solution or defibrated material suspension water into the tank 20. Have.

Therefore, in the surfactant solution supply section D, when the float switch 37 detects that the water level in the defibration tank 6 has dropped, the pump 21 is actuated, and the tank 20, the pump 21, and the discharge piping 59, first branch pipe 6
Waste paper floating in the air in which the replenishing surfactant solution is sprayed from the first surfactant solution supply system consisting of 0 and the first shower 61 toward the inside of the defibration tank 6. The replenishing surfactant solution is poured onto the. This promotes the permeation of the surfactant solution into the floating waste paper that encloses the air. At the same time, the tank 20,
From the second surfactant solution supply system including the pump 21, the discharge pipe 59, the second branch pipe 62, and the second shower 63, toward the lower surface of the pedestal 56 and the passage 57 in the wall 58. The replenishing surfactant solution is sprayed to wash away the defibrated material scraps adhering to the small holes 56a of the pedestal 56 and the passages 57 and return them to the defibrating tank 6. Further, the overflowed surfactant solution or defibrated material suspended water is returned to the inside of the tank 20 by a drain pipe, and the surfactant solution or defibrated material suspended water is returned to the tank 20. Cannot occur unless the float switch 37 fails, so that the replenishing surfactant solution in the tank 20 is not contaminated under normal conditions.

The defibrated material collecting section E has a bucket 26 for receiving the defibrated material block extruded by the defibrated material pushing cylinder 50 and falling down.

A unit of the control device 70 is arranged behind the bottom of the main body of the waste paper processing apparatus. Control device 7
0 controls the pump 21 of the surfactant solution supply unit D based on the detection result of the float switch 37, controls the waste paper feeder 4 of the waste paper supply unit A based on the detection result of the concentration sensor 36, and The rotation mode of the stirrer 7 of the fiber portion B is switched and controlled at regular intervals (for example, 15 seconds) or by checking the load current of the motor 9 for driving the stirrer to load the conveyor drive motor 43 of the defibrated material compression portion C. The screw conveyor 39 is controlled and the operation timing of each cylinder 46, 50 of the defibrated material compressing section C is controlled by observing the current or by observing the elapsed time from the start of driving the conveyor drive motor 43. These operations are performed according to the program.
In addition, although the arrangement position of the unit of the control device 70 has been described here as the bottom rear part in the waste paper processing device body, the control device does not need to particularly limit the arrangement position, and even in the upper part in the waste paper processing device body, Needless to say, it can be installed at any other location as long as there is enough space.

Next, the operation of the waste paper processing apparatus of this embodiment having the above construction will be described with reference to FIGS. 1 and 2. Further, here, the surfactant solution is stored in advance in the defibration tank up to the set water level, and a swirl flow is generated by the rotation of the stirrer, and the opening surface on one end side of the defibrated material block molding cylinder is pressed by the pressing plate. It is assumed to be blocked. First, in the waste paper processing, the waste paper 31 is placed on the waste paper insert base 3 in an overlapping manner. When the control system judges that the concentration of the surfactant solution 5 (the defibrated material suspended water after the start of operation) in the defibration tank 6 is low in view of the detection result of the concentration sensor 36, the waste paper feeder 4
Is permitted to be sent. As a result, the feeder 4 is activated and the waste paper 31 on the waste paper insertion stand 3 is removed by 1-2.
The pieces are put into the defibration tank 6 one by one. The waste paper 31 put in the defibrating tank 6 is softened by the permeation of the surfactant solution 5, and is further stirred by the swirling flow generated by the agitator 7 in the defibrating tank 6, is loosened, and is cut into pieces. It is disintegrated into small pieces or fibers. The waste paper that has been loosened and shredded into small pieces is a complicated swirl flow generated by the agitator 7 and a complicated part that is generated at the portion where the swirl flow in the forward direction and the swirl flow in the reverse direction collide with each other. By the flow, shearing forces are applied from multiple directions to loosen the fibers, and the fibers are efficiently defibrated.

In the control system, the rotation mode of the stirrer 7 is switched every 15 seconds. That is, the rotation direction of the stirrer 7 is set to 1
Invert every 5 seconds. Further, in the control system, the rotation mode of the stirrer 7 is switched depending on the state of the load current of the stirrer driving motor 9 regardless of time. For example, when the concentration of the defibrated material suspended water in the defibration tank 6 becomes thin and the load current decreases due to the paper breakage of the waste paper 31 on the waste paper insertion table 3, the stirrer 7 is rotated at a low speed, and after a predetermined time. Stop. Then, even in the case of this low speed rotation, the rotation direction is switched every 15 seconds. The change in the load current depends on the agitator driving motor 9
Appears as a change in the rotation speed of. In general, a change in current is accompanied by noise, so noise processing is required to improve detection accuracy. Therefore, in order to facilitate the control, a change in the rotation speed of the agitator driving motor 9 may be detected. That is, when the load current decreases, the rotation speed increases, and when the load current increases, the rotation speed decreases. The above-described rotation mode switching control may be performed by catching the change in the rotation speed.

The defibrated material suspended water of the waste paper 31 defibrated in the surfactant solution 5 in the defibration tank 6 is sucked by the screw conveyor 39 rotated by the drive of the conveyor driving motor 43. By force, defibrated material suspended water inlet 38b
To the inside of the tubular body 38, and the moisture (surfactant solution) is discharged from the small holes 38a of the tubular body 38 into the defibrating tank 6 and is conveyed toward the upper end of the tubular body to form a defibrated material block forming tubular body. 44. In the control system, the defibrated material block forming cylinder 4
Whether the amount of defibrated material in 4 has reached a predetermined amount is determined by the load current of the conveyor drive motor 43 or the elapsed time after the start of driving, and the load current increases or the transfer time reaches a predetermined time ( When 20 seconds have passed, the screw conveyor 39 is stopped.

When the screw conveyor 39 is stopped, the defibrated material pressing cylinder 46 is activated to start pressing the defibrated material in the defibrated material block forming cylinder 44. Since the back surface of the defibrated material in the defibrated material block forming cylinder 44 is supported by the pressing plate 53 on the backup member 54 side, the defibrated material press in the defibrated material block forming cylinder 44 is performed. Pressing Plate 49 and Backup Member 5 on the Cylinder 46 Side
The defibrated material block having the same shape as the space surrounded by the pressing plate 49, the pressing plate 53, and the inner wall of the defibrated material block forming cylinder 44 is drained by the pressure applied to the pressing plate 53 on the fourth side. Is molded into. Moisture (surfactant solution) removed from the defibrated material in the process of forming the defibrated material block
Is mainly discharged from the small holes 44a of the defibrated object block forming cylinder 44 and returned to the lower defibrating tank 6. In the control system, it is judged whether the press, that is, the water removal is completed, by the press pressure of the defibrated material press cylinder 46 or the elapsed time, and the press pressure is set to a set value (for example, 1200 Kg / c).
m ² ), or when the pressing time has passed a predetermined time (for example, 20 seconds), once the defibrated material pressing cylinder 4
After stopping the operation of 6, the defibrated material pushing cylinder 50
To operate the pressing plate 53, that is, the extrusion block 52.
Is retracted to the position shown in FIG. 2, and the opening surface on one end side of the defibrated material block forming cylinder 44 is released. Then, the defibrated material pressing cylinder 46 is operated again to further advance the pressing plate 49, and the defibrated material block is extruded onto the pedestal 56 outside the defibrated material block forming cylinder 44.

Pressing plate 4 on the cylinder 46 side for defibrated material pressing
In FIG. 9, water (surfactant solution) removed from the defibrated material during pressing of the defibrated material in the defibrated material block forming tubular body 44 is a small hole in the defibrated material block forming tubular body 44. The second groove 49b for guiding and discharging to 44a is formed at a plurality of positions on the peripheral surface, but the defibrated material is the defibrated material block forming cylinder 4
Since water is removed to some extent in the process of being conveyed to the inside of the screw conveyor 39 by the screw conveyor 39, the defibrated material is less mixed in the water removed from the defibrated material in the defibrated material block forming cylinder 44, Therefore, the second groove 49b of the pressing plate 49 is provided on the defibrated material block that has been dewatered and molded by the press.
No shape is transferred and no burr occurs. Therefore, the water-removed and molded defibrated material block is smoothly extruded from the inside of the defibrated material block-forming cylinder 44 by the defibrated material pressing cylinder 46 and transferred onto the pedestal 56.

When the defibrated material block is pushed onto the pedestal 56, the defibrated material pushing cylinder 50 is operated to move the pushing block 52 and the pressing plate 53 integrated with the pushing block 52 forward,
The defibrated material block on the pedestal 56 is extruded to the defibrated material collecting section E in the subsequent stage, and at the same time, the opening surface on one end side of the defibrated material block forming cylinder 44 is closed. In the process of extruding this defibrated material block to the defibrated material recovery section E in the subsequent stage, water droplets of the surfactant solution and defibrated material debris adhering to the surface of the pedestal 56 are extruded together with the defibrated material block. , Fall into the passage 57, and the defibration tank 6
Returned inside. Further, the defibrated material scraps clogged in the small holes 56a of the pedestal 56 and the defibrated material wastes caught in the passage 57 when the water level of the defibrated material suspension water in the defibrating tank 6 is lowered. , And is washed away by the supplementary surfactant solution sprayed from the second shower 63, and returned to the inside of the defibrating tank 6. At the same time, the replenishing surfactant solution sprayed from the first shower 61 promotes the penetration of the surfactant solution into the waste paper that is wrapping air and floating in the defibrating tank 6.

The water level of the defibrated material suspended water in the defibrating tank 6 is always wavy due to the swirling flow generated by the agitator 7, and it is difficult to accurately detect the water level during operation. For this reason,
The control system determines that the water level has dropped when the on state of the float switch 37 continues for a predetermined time, and the pump 21
Drive control.

Cradle 5 by cylinder 50 for pushing out defibrated material
The defibrated material block that is extruded from above 6 and falls is collected in the lower bucket 26. The above operation is continuously repeated to generate a small block formed by defibrating waste paper.

As described above, the waste paper processing apparatus 30 of this embodiment
When the water level of the defibrated material suspended water in the defibration tank 6 drops,
Since the replenishing surfactant solution sprayed from the first shower 61 is soaked in the floating waste paper that wraps the air in the defibration tank 6, the interface to the floating waste paper that wraps the air Penetration of the activator solution can be facilitated.

Further, the defibrated material compression section C is arranged at a position higher than the water surface in the defibrated material tank 6, and the defibrated material block formed by the defibrated material compression section C is transferred to the defibrated material recovery section E. A pedestal 56 for guiding is provided, and the pedestal 56 has a large number of small holes 5 for returning water leaked from the defibrated material compression system into the defibration tank 6.
6a is formed, and in the middle of the pipe, one end is connected to the discharge pipe 59, and the other end extends below the pedestal 56 of the defibrated material compression unit C in the defibration tank 6 The pipe 62 is provided, and the fountain outlet is provided at the other end of the branch pipe 62 so as to face the lower surface of the pedestal 56.
Since the shower 63 is attached, when the water level of the defibrated material suspension water in the defibration tank 6 is lowered, the supplementary surfactant solution is sprayed from the second shower 63 to the small holes 56a of the pedestal 56. This allows each small hole 56a of the pedestal 56 to be formed.
It is possible to wash away the waste of the defibrated material adhering to the defibrated material and return it to the inside of the defibrating tank 6.

A passage 57 is provided outside the end of the receiving table 56 on the discharge side of the defibrated material block for returning the waste of defibrated material discharged together with the defibrated material block into the defibration tank 6. Since a part of the fountain opening of the second shower 63 is formed toward the passage 57, when the water level in the defibration tank 6 drops,
The supplementary surfactant solution can be sprayed from the second shower 63 to the passage 57, whereby the defibrated material debris caught in the passage 57 can be washed away and returned to the defibration tank 6. .

[0047]

As described above, according to the present invention, the surfactant solution supply means for supplying the surfactant solution into the defibration tank based on the detection result of the water level detection means is replenished from the tank. For sending out the surfactant solution for use, a pipe with one end connected to the pump side and the other end extending to the upper part of the defibration tank, and a pipe with the fountain port facing inward of the defibration tank Since it is composed of the first shower attached to the other end of the, when the water level in the defibration tank drops, the replenishing surfactant solution spouted from the first shower is floated by enclosing air. The waste paper can be exposed to the waste paper, which can wrap the air and promote the penetration of the surfactant solution into the floating waste paper.

Further, according to the present invention, the defibrated material compression means is arranged at a position higher than the water surface in the defibration tank, and
A pedestal for guiding the defibrated material block formed by the defibrated material compressing means to the defibrated material collecting portion is provided, and for receiving the water leaked from the defibrated material compressing means into the defibrating tank. A large number of small holes are formed, and a branch pipe whose tip extends below the pedestal is provided in the middle of the pipe, and the fountain port is exposed to the lower surface of the pedestal at the tip of the branch pipe to form the second shower. Since it is attached, when the water level in the defibration tank drops, the supplementary surfactant solution can be sprayed from the second shower toward the lower surface of the pedestal, which adheres to the small holes of the pedestal. It is possible to wash away the waste of the defibrated material and return it to the defibration tank.

Further, according to the present invention, a passage for returning the waste of the defibrated material discharged together with the defibrated material block to the outside of the defibrated material block discharge side end portion of the cradle into the defibrating tank. Since a part of the fountain opening of the second shower is formed toward the passage, the supplementary surfactant solution is directed toward the passage from the second shower when the water level in the defibration tank drops. A fountain can be sprinkled, which makes it possible to wash away the defibrated material debris caught in the middle of the passage and return it to the defibration tank.

[Brief description of drawings]

FIG. 1 is a right side sectional view showing an overall configuration of a waste paper processing apparatus according to an embodiment of the present invention.

FIG. 2 is a front cross-sectional view of the waste paper processing apparatus of this embodiment.

FIG. 3 is a front sectional view showing the overall configuration of a conventional waste paper processing device.

FIG. 4 is a left side sectional view of a conventional waste paper processing device.

FIG. 5 is a right side sectional view of a conventional waste paper processing device.

[Explanation of symbols]

 A Waste paper supply section B Disentanglement section C Disentanglement material compression section D Surfactant solution supply section E Disentanglement material recovery section 5 Surfactant solution 6 Disentanglement tank 20 Tank 21 Pump 25 Disentanglement block 30 Waste paper treatment Device 31 Waste paper 37 Float switch (water level detection means) 39 Screw conveyor 56 Cradle 56a Small hole 57 Passage 60 First branch pipe (piping) 61 First shower 62 Second branch pipe (branch pipe) 63 Second Shower

Claims (3)

[Claims] 1. A surfactant solution is supplied from a surfactant solution supply means into the defibration tank based on the detection result of the water level detection means, and the surfactant solution is put into the defibration tank in which it is stored. In the waste paper processing device, which disintegrates the waste paper into a fiber shape, conveys the disintegrated material suspended water of the disintegrated waste paper to the defibrated material compression means, and forms the block shape by the defibrated material compression means A pump for feeding the replenishing surfactant solution from the inside of the tank, and a pipe having one end connected to the pump side and the other end extending to the upper part in the defibration tank And a first shower attached to the other end of the pipe with the fountain port facing inward of the defibration tank. 2. The defibrated material compressing means is disposed at a position higher than the water surface in the defibrating tank, and the defibrated material block formed by the defibrated material compressing means is guided to the defibrated material collecting portion. Is provided with a plurality of small holes for returning the water leaked from the defibrated material compressing means into the defibration tank,
Further, a branch pipe having a tip extending below the pedestal is provided in the middle of the pipe, and a second shower is attached to the tip of the branch pipe with a fountain port facing the lower surface of the cradle. Item 1. The waste paper processing device according to item 1. 3. A path for returning the waste of the defibrated material discharged together with the defibrated material block to the inside of the defibration tank is provided outside the defibrated material block discharge side end portion of the cradle, and 3. The waste paper processing apparatus according to claim 2, wherein a part of a fountain port of the shower is formed so as to face the passage.