JP4685973B1 - Separating method of used paper diaper and used paper diaper separating apparatus used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and automatically collect vinyl after separation.
SOLUTION: A drainage hole is formed on the peripheral surface of a rotating drum 23 whose one side is open, but vinyl V cannot pass through the other side. A part of the outer tank 22 is pivotally supported at a position where it is immersed in water, and a sedimentation chamber 22a with a discharge valve 22b is formed at the bottom of the outer tub 22. The vinyl recovery duct 34 to be sucked is piped. In addition, an air nozzle 27 for blowing compressed air to the outer peripheral surface of the rotating drum 23 is provided, a water pipe is provided between the outer tub 22 and the rotating drum 23, and the water W in the outer tub 22 is passed into the rotating drum 23 through the water pipe. Provide a circulation pump to send and circulate water.
[Selection] Figure 6

Description

  The present invention relates to a method for separating a used paper diaper that separates a used paper diaper into a vinyl and the other and a used paper diaper separating apparatus used therefor.

  Conventionally, techniques for separating a used paper diaper into vinyl and others are disclosed in Patent Documents 1 and 2. The technology described in Patent Document 1 cuts used paper diapers, puts them in a decomposition tank together with water and calcium chloride, and stirs them, reacts the water-absorbing polymer contained in the used paper diapers with calcium chloride, dehydrates and pulps.・ The nonwoven fabric, absorbent paper, and manure were dissolved and precipitated, and the vinyl floating near the water surface of the decomposition tank was scooped up with a screen so that it could be separated.

  Further, the technique described in Patent Document 2 is a used paper diaper separation device composed of a rotating drum having a perforation, an outer tub that accommodates a lower portion of the rotating drum, and a drain pipe piped to the outer tub. The used paper diaper and water are put into a rotating drum, and the used paper diaper is separated and dissolved by stirring by the rotation of the rotating drum. The dissolved product is allowed to pass through the porous drum and settled in the outer tank, and the precipitated dissolved product. It was made to be able to isolate | separate by discharging | emitting this by a drain pipe and making vinyl which is an insoluble matter remain in a rotating drum.

  By the way, in the technique described in Patent Document 1, the operation of scooping up with a screen is slow, and it takes time to collect vinyl, which is inefficient. In the technique described in Patent Document 2, since the vinyl remaining in the rotating drum needs to be manually removed by the operator after stopping the rotating drum, it is difficult to automate the collection of vinyl or to continuously process the vinyl. This technique is not suitable for the disposal of used paper diapers.

Japanese Patent No. 3378204 Japanese Patent No. 3895081

  The problem to be solved by the present invention is to solve these conventional problems and to enable automatic recovery of the separated vinyl quickly.

The configuration of the present invention that solves this problem is as follows.
1) A method of separating used paper diapers that separates used paper diapers from vinyl and other materials. Water-absorbing polymer contained in used paper diapers, mixed with water and a dehydrating agent after being cut or crushed. The dehydrating agent is reacted with a dehydrating agent, and the dehydrated mixture is put into a rotating drum to be dissolved, and a dissolved material other than vinyl is precipitated and discharged out of the rotating drum, and the vinyl is put into the rotating drum. Separation method of used paper diaper, characterized by having a separation step of leaving and a recovery step of sucking and collecting the residual vinyl out of the rotating drum 2) Used paper diaper and water cut or crushed A used paper diaper separation device that dissolves the mixed mixture and separates it into vinyl and the other. A drainage hole is formed that can not pass through, but the other can pass through, and the rotating drum is rotatably supported in a position in which the rotary drum can be sealed in a sideways position and partially immersed in water. A used paper diaper separating device 3), characterized in that a sedimentation chamber with a discharge valve is formed at the bottom of the container, and a vinyl collection duct is provided at the open position of the rotating drum to suck vinyl out of the outer tub with suction means. 2) Used paper diaper separation device as described in 2) above, which is provided with an air nozzle that blows compressed air on the outer peripheral surface of the rotating drum. 4) A water pipe is provided between the lower part of the outer tub and the open position of the rotating drum. 2) or 3) used paper diaper separator 5) provided with a circulation pump for circulating the water in the outer tub into the rotary drum 5) The peripheral surface of the drying drum whose suction means is open on one side To the convenience store A ventilation hole is formed through which the drum cannot pass, but the others can pass through. The drying drum is rotatably supported inside the sealable box, and a drying heater is attached to the top of the box to dry it. An opening / closing damper that opens and closes the upper surface of the box body is attached above the heater, a blower that operates toward the exhaust is attached to the lower part of the box body, and a vinyl recovery duct is piped to the opening position of the drying drum, 2) 4) Used paper diaper separation device according to any one of the above 6) A reaction tank with a stirrer for adding water and a dehydrating agent to the cut or crushed used paper diaper and mixing it is provided separately from the outer tank. The used paper diaper separation apparatus 7) described in any one of 2) to 5) above, in which a charging chute with an opening / closing valve for charging the mixture into the rotating drum is attached between the tank and the tank. A used paper diaper separation device according to 6), wherein a nozzle for supplying water by supplying water in a direction in which a water flow is formed is attached to the reaction tank. It exists in the used paper diaper separation apparatus of said 6) or 7).

  According to the configuration described in 1) of the present invention, water and a dehydrating agent are added to and mixed with the cut or crushed used paper diaper, and the water-absorbing polymer contained in the used paper diaper is dehydrated by reacting with the dehydrating agent. The dehydrated mixture is charged into the rotating drum and melted, and melted materials other than vinyl are precipitated and discharged out of the rotating drum, and the vinyl remains in the rotating drum, and the vinyl in the separated rotating drum is separated. Is sucked and collected outside the rotating drum. As described above, vinyl can be efficiently collected in a short time as compared with scooping by the screen of the technique described in Patent Document 1. In addition, unlike the technique described in Patent Document 2, manual operation of the operator is not required, so that vinyl collection can be automated and continuous processing is facilitated.

  According to the configuration of 2) of the present invention, when the mixture is put into the rotating drum and rotated, the mixture is dissolved by the rotation, and the dissolved material other than vinyl passes through the drainage hole of the rotating drum and is removed. When it settles in the settling chamber of the tank and the discharge valve is opened, the water and the dissolved matter in the settling chamber are discharged and only the vinyl remains in the rotating drum. If the suction tank is closed with the discharge valve closed and the rotating drum is rotated, suction is performed by suction means, and the inside of the outer tank and the vinyl recovery duct becomes negative pressure, and the vinyl in the rotating drum becomes the vinyl recovery duct. Inhaled and collected. As described above, vinyl can be efficiently collected in a short time as compared with scooping by the screen of the technique described in Patent Document 1. In addition, unlike the technique described in Patent Document 2, manual operation of the operator is not required, so that vinyl collection can be automated and continuous processing is facilitated.

  According to the configuration described in 3) of the present invention, when the compressed air of the air nozzle passes through the drain hole of the rotating drum, the vinyl adhering to the inner surface of the rotating drum is peeled off by that force, leaving the vinyl. It can be reliably recovered.

  According to the configuration described in 4) of the present invention, the water in the outer tub sucked by the circulation pump is fed into the rotating drum, and the vinyl easily separates from the other melts by the flow. Therefore, the vinyl separation effect can be enhanced without adding a large amount of water or rotating the rotating drum at a high speed.

  According to the configuration described in the above 5) of the present invention, when collecting separated vinyl, when the opening and closing damper is closed and the blower is operated, the inside of the outer tank, the box, and the vinyl collection duct becomes negative pressure, Vinyl in the rotating drum is sucked into the vinyl recovery duct and recovered into the box. When drying the collected vinyl, opening the open / close damper and operating the drying heater and blower causes the outside air to pass through the drying heater and be heated by the suction of the blower, and that heat is introduced into the box. The vinyl is dried. In this way, vinyl can be collected and dried with a single blower, and the cost of equipment and space saving can be reduced.

  According to the configuration described in 6) of the present invention, the water-absorbing polymer contained in the used paper diaper reacts with the dehydrating agent to dehydrate, and the swelling of the water-absorbing polymer is suppressed, so that the separation of the material is facilitated.

  According to the configuration described in 7) of the present invention, the used paper diaper, water, and the dehydrating agent are efficiently stirred without rotating the stirrer at a high speed, and mixing and dehydration of the water-absorbing polymer can be accelerated.

  According to the configuration described in 8) of the present invention, when the mixture is charged into the rotating drum, the mixture may adhere to the on-off valve and the middle of the charging chute may become clogged easily. By doing so, the adhering mixture can be washed away and the mixture can be passed smoothly.

It is a general view of the used paper diaper processing equipment of an Example. It is a front view of the used paper diaper separation apparatus of an Example. It is a side view of the used paper diaper separation apparatus of an Example. It is a cross-sectional view of the used paper diaper separation apparatus of an Example. It is a longitudinal cross-sectional view of the used paper diaper separation apparatus of an Example. It is a longitudinal cross-sectional view of the used paper diaper separation apparatus of an Example. It is explanatory drawing of the vinyl drying apparatus of an Example. It is a separation process figure of the used paper diaper of an Example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be specifically described based on examples and drawings.

  The embodiment shown in FIGS. 1 to 8 is an example of a used paper diaper processing facility in which a large number of used paper diapers can be separated in parallel by three used paper diaper separation devices and three vinyl drying devices. FIG. 1 is an overall view of a used paper diaper processing facility of the embodiment, FIG. 2 is a front view of the used paper diaper separating apparatus of the embodiment, FIG. 3 is a side view of the used paper diaper separating apparatus of the embodiment, and FIG. 5 and 6 are longitudinal sectional views of the used paper diaper separating apparatus of the embodiment, FIG. 7 is an explanatory view of the vinyl drying apparatus of the embodiment, and FIG. 8 is used of the embodiment. It is a separation process figure of a paper diaper.

  In the figure, 10 is a cutting device, 11 is a standby conveyor, 12 is a sorting conveyor, 20 is a used paper diaper separator, 21 is a frame, 22 is an outer tank, 22a is a sedimentation chamber, 22b is a discharge valve, 23 is a rotating drum, 23 a is a stirring blade, 23 b is a motor, 24 is a reaction tank, 24 a is a stirring device, 24 b is a water level detector, 24 c is a nozzle, 24 d is a charging path, 24 e is a charging chute, 24 f is an on-off valve, 24 g is a cleaning nozzle, 25 Is a water supply pipe, 26 is a supply pipe, 27 is an air nozzle, 28 is a water pipe, 29 is a circulation pump, 30 is a vinyl dryer, 31 is a frame, 32 is a box, 32a is a door, 32b is a cylinder for tilting, and 33 is Drying drum 34, vinyl recovery duct 35, drying heater 35, open / close damper 36, blower 37, conveyor conveyor 38, lint recovery device 3, a exhaust duct, A is used disposable diapers, B mixtures, Ba is lysate, C is calcium chloride (dehydrating agent), V is vinyl, W is water.

  As shown in FIG. 1, the used paper diaper processing facility according to the present embodiment stores a cutting device 10 that cuts the used used paper diaper A, and the used paper diaper A cut by the cutting device 10 until the time of distribution. The standby conveyor 11 and the used paper diaper A loaded from the standby conveyor 11 are moved and distributed at a position below the standby conveyor 11 and are distributed from the distribution conveyor 12 below the movement position of the distribution conveyor 12. The three used paper diaper separation devices 20 for separating the used paper diaper A and the three vinyl drying devices 30 for collecting and drying the vinyl V separated by the used paper diaper separation device 20 are configured. Yes.

  2 to 6, the used paper diaper separation device 20 has an outer tank 22 attached to the frame 21 at a predetermined height, and forms a sedimentation chamber 22a for precipitating the dissolved Ba at the bottom of the outer tank 22, The bottom of the sedimentation chamber 22a is opened, and a discharge valve 22b for discharging the dissolved product Ba together with the water W by attaching the air cylinder up and down is attached.

  Inside the outer tub 22, a stainless steel rotating drum 23 having a front surface opened and a drain hole formed in the peripheral surface is pivotally supported in a horizontal posture, and a stirring blade 23 a is attached to the inner surface of the rotating drum 23 for rotation. A motor 23 b that rotates the drum 23 forward and backward is attached to the rear surface of the outer tub 22. The rotating drum 23 is provided at a position slightly deviated from the axis of the outer tub 22 and has an outer diameter and length of 1500 mm × 1000 mm. The drainage hole has a diameter through which water W and melted Ba can pass but vinyl V cannot pass. (The hole diameter is 5 mm and the opening ratio is 30%).

A reaction tank 24 equipped with a stirrer 24 a and a water level detector 24 b is attached to the upper part of the frame 21, and a water supply pipe 25 for supplying water W and a supply pipe 26 for supplying calcium chloride C are connected to the side of the reaction tank 24. ing. As the dehydrating agent, calcium chloride (CaCl ₂ ) and polyvalent metal ions such as Ca, Na, and Mg can be used. A nozzle 24c that jets the supplied water W in a direction in which a water flow in the same direction as the rotation direction of the stirring device 24a is formed is attached to the tip of the water supply pipe 25, and the water level detector 24b detects a predetermined water level in the tank. Then, the supply of water W and calcium chloride C is stopped.

  The inner bottom of the reaction tank 24 is inclined downwards forward, and a charging path 24d and a charging chute 24e are attached and communicated between the end position of the inclined surface and the front surface of the outer tank 22, and an air cylinder is connected to the charging path 24d. An on-off valve 24f for introducing the mixture B by the up-and-down movement is attached, and a washing nozzle 24g for spraying and washing the on-off valve 24f is attached above the on-off valve 24f.

  An air nozzle 27 for blowing compressed air of about 0.5 MPa supplied by a compressor (not shown) to the outer peripheral surface of the rotating drum 23 is attached to the upper portion of the outer tub 22, and the lower portion of the charging chute 24 e is formed from the lower side surface of the outer tub 22. A circulation pump 29 is provided for supplying water W in the outer tub 22 into the rotary drum 23 through the water pipe 28.

  As shown in FIG. 7, the vinyl drying device 30 pivotally supports a sealable box 32 having a vinyl discharge door 32 a on a frame 31 at the lower end, and tilts the box 32 forward. A cylinder 32b is attached, and a horizontal drying drum 33 having one side opened inside the box 32 is rotatably supported by a motor (not shown). A vinyl recovery duct 34 is piped between the front surface of the box 32 and the open position of the rotating drum 23 of the used paper diaper separating apparatus 20. The drying drum 33 has an outer diameter and a length of 1200 mm × 1000 mm, and a ventilation hole (not shown) having a diameter through which the vinyl V cannot pass is formed on the entire surface.

  A drying heater 35 that generates heat while being adjusted by a thermostat and a solenoid valve (not shown) is attached to the upper surface of the box 32 so that the hot air inlet temperature is 100 ° C. and the exhaust outlet temperature is around 80 ° C. The drying heater 35 An open / close damper 36 is attached to the upper surface of the box, and a blower 37 that operates in the direction of exhaust is attached to the lower part of the box 32. At the time of suction, the blower 37 operates with the open / close damper 36 closed, and at the time of drying, the blower 37 operates with the open / close damper 36 open.

  A transport conveyor 38 for transporting the discharged vinyl V is installed immediately below the door 32a of the box 32. A cyclone type lint collecting device 39 is installed at a position adjacent to the vinyl drying device 30, and an exhaust duct 39 a is piped between the lint collecting device 39 and the rear portion of the box 32.

  Hereinafter, separation of the used paper diaper A and collection of the vinyl V using the used paper diaper processing facility of the present embodiment will be described.

<Cutting process>
First, the cutting device 10 and the standby conveyor 11 are operated. The distribution conveyor 12 stands by at the end position of the standby conveyor 11. When the used paper diaper A is put into the cutting device 10, it is conveyed rightward while being cut, and is discharged from the terminal end to the standby conveyor 11. The used paper diaper A includes not only a single item but also one stored in a garbage bag.

<Input process>
The standby conveyor 11 conveys the cut used paper diaper A in the right direction and puts it into the sorting conveyor 12. When an amount for one batch is accumulated on the sorting conveyor 12, the sorting conveyor 12 moves to the position of the used disposable diaper separating device 20 and puts it into the reaction tank 24. After the charging, the sorting conveyor 12 returns to the end position of the standby conveyor 11, and when the next batch of used paper diaper A is input, it moves to another standby paper diaper separation device 20 that is on standby, and the reaction tank 24 This is always repeated.

<Mixing / reaction process>
In the used paper diaper separation device 20, water W and calcium chloride C are supplied to the reaction tank 24, and the stirring device 24a operates. The on-off valve 24f is closed. The water W is ejected from the nozzle 24c to form a water flow in the same direction as the rotation direction of the stirring device 24a, and is efficiently stirred. When the water level detector 24b detects a predetermined water level in the tank, the supply of water W and calcium chloride C is stopped and then stirred for about 6 minutes. In this step, the water-absorbing polymer contained in the used paper diaper A reacts with calcium chloride C to dehydrate, and the swelling of the water-absorbing polymer is suppressed, so that the material can be easily separated.

  When mixing and dehydration of the water-absorbing polymer are completed, the stirring device 24a is stopped, the on-off valve 24f is opened, and the mixture B in the reaction tank 24 is transferred into the rotary drum 23 through the charging path 24d and the charging chute 24e. At this time, the mixture B may easily adhere to the on-off valve 24f and become clogged. However, by continuously or intermittently spraying the on-off valve 24f with the cleaning nozzle 24g, the adhering mixture B is washed away and mixed B Smooth the passage. When the mixture B accumulates at a water level where about 1/3 of the rotating drum 23 is immersed (water level where the water surface is directly below the vinyl recovery duct 34), the on-off valve 24f is closed, and the next used batch of disposable diapers A Is added, mixed and dehydrated, transferred to the rotating drum 23, and this is always repeated.

<Dissolution / separation process>
When the on-off valve 24f is closed, the rotary drum 23 rotates and the circulation pump 29 is activated. The rotating drum 23 repeats normal rotation, stop, and reverse rotation at a rotational speed of about 20 rpm to dissolve the mixture B, and the dissolved product Ba passes through the drainage hole of the rotating drum 23 and settles in the sedimentation chamber 22a. Vinyl V (including vinyl in the garbage bag) remains in the rotating drum 23 without passing through the drain hole. The water W in the outer tub 22 sucked by the circulation pump 29 is fed into the rotary drum 23, and the flow and the stirring blade 23a make it easy for the vinyl V to separate from the other melt Ba, and a large amount of water W is removed. The separation effect of the vinyl V is increased without throwing in or rotating the rotary drum 23 at a high speed.

  When the entire amount of the melt Ba in the rotary drum 23 settles in the settling chamber 22a, the rotary drum 23 and the circulation pump 29 are stopped, the discharge valve 22b is opened, the water W and the melt Ba are discharged, and the wastewater treatment facility (see FIG. (Not shown). The high-quality pulp component with high purity in the melt Ba is reused as pulp for paper diapers and paper products, and the low-quality pulp component containing water-absorbing polymer and impurities is used for compost (compost). Manure is decomposed and concentrated by microorganisms, dehydrated and solidified and carbonized.

<Recovery and drying process>
When all of the water W and the dissolved product Ba are discharged, the discharge valve 22b and the opening / closing damper 36 of the vinyl drying device 30 are closed, and the rotating drum 23 and the blower 37 are operated. With this blower 37, the inside of the outer tub 22, the box 32 of the vinyl drying device 30 and the inside of the vinyl recovery duct 34 become negative pressure, and the vinyl V in the rotary drum 23 is sucked into the vinyl recovery duct 34 vigorously. 30. At the same time, compressed air is blown from the air nozzle 27 to the outer peripheral surface of the rotating drum 23, and the vinyl V adhering to the inner surface of the rotating drum 23 is peeled off due to the force of the compressed air flowing through the drain hole of the rotating drum 23. , Reliably recovered. Thus, according to the present Example, the vinyl V after separation can be quickly and automatically collected. When the entire amount of vinyl V is recovered, the rotating drum 23 stops, and when the next mixture B is transferred, the rotating drum 23 rotates to dissolve and separate, and this is always repeated.

  In the vinyl drying device 30, the open / close damper 36 is opened, the drying heater 35 and the lint collecting device 39 are operated, and the drying drum 33 is rotated (the blower 37 remains activated). The outside air is heated by passing through the drying heater 35 by the suction of the blower 37, and the heat is introduced into the box body 32. The vinyl V in the drying drum 33 is unwound and dispersed by the rotation, and is dried with hot air that has passed through the ventilation holes until the residual water ratio becomes 20% or less. The hot air is exhausted to the lint collection device 39 through the exhaust duct 39a.

  When the drying of the vinyl V is completed, the drying drum 33, the drying heater 35, the blower 37, and the lint collection device 39 are stopped, the tilting cylinder 32b is extended, and the box 32 is tilted forward. The transfer conveyor 38 stands by at a position directly below the door 32a of the box 32. When the door 32a is opened, the vinyl V in the drying drum 33 is discharged onto the transport conveyor 38, transported to a press device (not shown), compressed, and reused for vinyl products or used as fuel. When the vinyl V is discharged, the tilting cylinder 32b is contracted to return the box body 32 to its original posture. When the next mixture B is dissolved and separated, the vinyl V is recovered and dried, and this is always repeated.

  In this way, each step is repeated continuously and in parallel as shown in FIG. 8, and a large amount of used paper diaper A is efficiently separated.

  The technique of the present invention is useful for recycling a large amount of used paper diapers.

DESCRIPTION OF SYMBOLS 10 Cutting device 11 Standby conveyor 12 Sorting conveyor 20 Used paper diaper separation device 21 Frame 22 Outer tank 22a Settling chamber 22b Discharge valve 23 Rotating drum 23a Stirring blade 23b Motor 24 Reaction tank 24a Stirrer 24b Water level detector 24c Nozzle 24d Input path 24e Input chute 24f On-off valve 24g Cleaning nozzle 25 Water supply pipe 26 Supply pipe 27 Air nozzle 28 Water pipe 29 Circulation pump 30 Vinyl drying device 31 Frame 32 Box 32a Door 32b Tilt cylinder 33 Drying drum 34 Vinyl recovery duct 35 Drying heater 36 Opening / closing Damper 37 Blower 38 Conveyor 39 Lint recovery device 39a Exhaust duct A Used paper diaper B Mixture Ba Dissolved substance C Calcium chloride (dehydrating agent)
V Vinyl W Water

Claims (8)

  A method for separating used paper diapers into vinyl and other types. Used diapers are separated, and water and a dehydrating agent are added to and mixed with the cut or crushed used paper diapers to dehydrate the water-absorbing polymer contained in the used paper diapers. The reaction process of dehydrating by reacting with the agent, and the dehydrated mixture is put into the rotating drum and dissolved, the dissolved material other than vinyl is precipitated and discharged out of the rotating drum, and the vinyl remains in the rotating drum. A method for separating used paper diapers, comprising: a separation step; and a collection step of sucking and collecting the residual vinyl outside the rotating drum.   A used paper diaper separation device that dissolves a mixture of cut and crushed used paper diaper and water to separate it from vinyl and the other, but vinyl cannot pass through the peripheral surface of the rotating drum with one side open. Other than that, a drainage hole that allows passage is formed, and the rotating drum is pivotally supported in a sideways position and partially immersed in water inside the sealable outer tub, and discharged to the bottom of the outer tub. A used paper diaper separation device, characterized in that a settling chamber with a valve is formed, and a vinyl recovery duct is provided at the open position of the rotating drum to suck vinyl out of the outer tank by suction means.   The used paper diaper separation apparatus according to claim 2, wherein an air nozzle for blowing compressed air to the outer peripheral surface of the rotating drum is provided.   The water pump is provided between the lower part of an outer tank and the open position of a rotating drum, The circulation pump which supplies and circulates the water in an outer tank into the rotating drum through the water pipe was provided. Used paper diaper separator.   The suction means forms a vent hole through which vinyl cannot pass on the peripheral surface of the drying drum whose one side is open, but the other side can pass, and rotatably supports the drying drum inside the sealable box. A drying heater is attached to the top of the box, an open / close damper that opens and closes the top of the box is installed above the drying heater, a blower that operates toward the exhaust is attached to the bottom of the box, and the vinyl recovery duct is dried. The used paper diaper separation device according to any one of claims 2 to 4, wherein the used paper diaper separation device has a structure piped to an open position of the drum.   Open and close the reaction tank with a stirrer that mixes water and dehydrating agent with the cut or crushed used paper diaper and mixes it, and put the mixture into the rotating drum between the reaction tank and the outer tank The used paper diaper separation device according to any one of claims 2 to 5, wherein a charging chute with a valve is attached.   The used paper diaper separation apparatus according to claim 6, wherein a nozzle for supplying water by spraying water in a direction in which a water flow in the same direction as the rotation direction of the stirring device is formed is attached to the reaction tank.   The used paper diaper separation apparatus according to claim 6 or 7, further comprising a cleaning nozzle that fountains and cleans the on-off valve.

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