JP7050604B2 - Crusher - Google Patents

Description

The present invention relates to a crusher.

Patent Document 1 discloses a disposal facility for disposing of disposable diapers. This disposal facility can separate the disposable diaper from the moisture absorbed by the polymer of the disposable diaper. Specifically, after crushing the disposable diaper, the polymer water-absorbing polymer contained in the disposable diaper is reacted with the polymer decomposing agent to take out water from the polymer water-absorbing polymer, and the extracted water is purified in a septic tank. In addition, the components of the disposable diaper from which the water has been removed can be recovered and reused as fuel or the like.

Japanese Unexamined Patent Publication No. 2000-84533

However, Patent Document 1 requires a septic tank for purifying the water taken out from the diaper. Therefore, in Patent Document 1, the apparatus may be complicated and large in scale.

The present invention has been made in view of the above-mentioned conventional circumstances, and provides a crushing apparatus capable of satisfactorily extracting water from a polymer of a crushed material having a polymer having a simple structure and retaining water. It is an issue to be solved.

The crusher of the present invention is
An input port for charging the crushed material having a polymer that retains moisture,
A decomposing agent that takes out the crushed material and the water retained by the polymer from the polymer and puts the polymer in an irreversible state is added, and the polymer and the decomposing agent that retain the water content while crushing the crushed material are used. The crushed part that reacts with
A discharge section that communicates with the crush section and discharges waste liquid from the crush section.
An opening / closing portion provided in the discharging portion to open / close the discharging portion,
A stirring tank in which the waste liquid that communicates with the downstream side of the discharge portion and is conveyed through the discharge portion is agitated to form a discharge port.
It is characterized by having.

This crushing device can crush the crushed material at the crushing portion and take out the water from the polymer that retains the water content of the crushed material by the decomposing agent. Then, by closing the discharging portion by the opening / closing portion until the reaction between the polymer and the decomposing agent sufficiently proceeds in the crushing portion, it is possible to prevent the polymer from which water has not been taken out from flowing into the stirring tank. In addition, the waste liquid can be satisfactorily stirred in the stirring tank.

Therefore, the crushing apparatus of the present invention can satisfactorily extract water from the polymer of the crushed product having a polymer having a water-retaining polymer with a simple structure.

It is the schematic of the crushing apparatus of Example 1. FIG. It is a graph which shows the change of the motor consumption of the crushing part at the time of crushing a disposable diaper in the crushing part of Example 1. FIG. It is a graph which shows the current consumption of the motor of the stirring tank at the time of reacting a polymer of a paper diaper with a decomposition agent in the stirring tank of Example 1, and (A) is the state which the reaction between a polymer and a decomposition agent has not progressed sufficiently. In (B), the reaction between the polymer and the decomposing agent has progressed sufficiently.

A preferred embodiment of the present invention will be described.

The opening / closing portion of the crushing device of the present invention may be a first on / off valve. In this case, the discharge portion can be easily opened and closed by the first on-off valve.

The crushing apparatus of the present invention may be provided with a decomposing agent charging port for charging the decomposing agent separately from the charging port. In this case, by providing the decomposing agent charging port, a charging device such as a feeder for charging the decomposing agent can be easily attached to the decomposing agent charging port.

The crushing apparatus of the present invention is provided at the first load detecting unit for detecting the magnitude of the first load related to the crushing portion and the decomposing agent input port when the crushed material is crushed at the crushing portion, and the decomposing agent is provided. The decomposing agent charging device to be charged and the first control unit that controls the decomposing agent charging device so that the decomposing agent is charged from the decomposing agent charging device based on the magnitude of the first load detected by the first load detecting unit. Can be prepared. In this case, by detecting the magnitude of the first load in the first load detection unit, the state of the reaction between the polymer and the decomposing agent in the crushing portion can be grasped, and the magnitude of the first load can be grasped in the first control unit. By charging a corresponding amount of the decomposing agent from the decomposing agent charging device, an appropriate amount of the decomposing agent can be charged in order to extract water from the polymer.

In the crushing apparatus of the present invention, when the waste liquid is agitated in the stirring tank, the second load detection unit that detects the magnitude of the second load related to the stirring tank and the second load detection unit detects the magnitude of the second load. Based on the above, it may be provided with a second control unit that controls the decomposition agent charging device so that the decomposition agent is charged from the decomposition agent charging device. In this case, by detecting the magnitude of the second load in the second load detection unit, the state of the reaction between the polymer and the decomposing agent in the stirring tank can be grasped, and the magnitude of the second load can be grasped in the second control unit. By charging a corresponding amount of the decomposing agent from the decomposing agent charging device, an appropriate amount of the decomposing agent can be charged in order to extract water from the polymer.

The crushing apparatus of the present invention may include a decomposition agent input determination unit for determining whether or not the decomposition agent has been input from the decomposition agent input port. In this case, by using the result obtained by the decomposing agent input discriminator as a condition for operating the crushing device, the crushing device can be operated only when the decomposing agent is charged, or the decomposing agent can be used by the user of the crushing device. It is possible to notify that the crushing device is not loaded, and the crushing device can be operated properly.

The crushing apparatus of the present invention may include a water supply unit that supplies water to the crushing unit. In this case, by supplying water from the water supply section to the crushed section, the crushed material can be satisfactorily crushed in the crushed section, and the inside of the crushed section can be cleaned.

The crushing apparatus of the present invention has a predetermined elapsed time after the crushing portion has stopped operating, every predetermined number of times the crushing portion has operated, every predetermined amount of decomposition agent added or every predetermined number of times of addition, or a predetermined time. Each time, the water supply control unit may be provided to control the water supply unit to supply water. In this case, the inside of the crushing device can be kept in a good state by supplying water to the water supply section at predetermined timings by the water supply control unit and cleaning the inside of the crushing device.

In the crushed portion of the present invention, a crushed space for crushing the crushed material and a storage space for storing the crushed crushed material and communicating with the discharge portion are formed, and a circulation path communicating the storage space and the crushed space. Can have. In this case, by circulating the crushed material crushed by the circulation path from the storage space to the crushed space, not only the crushed material can be crushed more finely, but also the retention is eliminated and the reaction between the polymer and the decomposing agent is ensured. Can be advanced to.

The crushing device of the present invention may include a drainage channel that communicates with the discharge port and has a trap, and a second on-off valve that is provided on the upstream side of the trap and opens and closes the drainage channel. In this case, when the drainage channel is connected to the sewer pipe, the trap can prevent odors from rising from the sewer pipe and insects from invading, and further, by closing the second on-off valve, the second on-off valve can be closed. It can block odors and insects more reliably.

The crushing apparatus of the present invention may include a separating part between the trap and the second on-off valve to separate the solid content from the waste liquid. In this case, if the waste liquid cannot be flowed to the sewer pipe as it is, the water of the waste liquid should be flowed to the sewer pipe by the separation part to capture the solid content of the waste liquid so that the captured solid content does not flow to the sewer pipe. Can be done.

Next, Example 1 which embodies the crushing apparatus of the present invention will be described with reference to the drawings.

<Example 1>
The crushing device of the first embodiment is a device that crushes a used disposable diaper which is a crushed material and discharges it to a sewer pipe. Paper diapers are made of pulp, plastic, polymer (superabsorbent polymer) and the like. When used in disposable diapers, pulp and polymers retain moisture. Moisture can be extracted from the polymer by reacting the polymer containing water with CaCl ₂ (calcium chloride) or the like, which is a decomposing agent. In addition, the polymer reacted with CaCl ₂ as a decomposing agent becomes an irreversible state in which it cannot retain water again. That is, the degrading agent removes the water retained by the polymer from the polymer and makes the polymer irreversible.

As shown in FIG. 1, the crushing device 1 includes an input port 10 for charging a used disposable diaper D, a crushing unit 20, a discharge path 11 as a discharge unit, a first on-off valve 12 as an opening / closing unit, and a stirring tank 30. A decomposition agent inlet 13, a water supply unit 14, a drainage channel 15, a second on-off valve 16, a separation unit 40, and an overflow path 17 are provided. The loading port 10 extends in the vertical direction and is formed at the open upper end of the cylindrical loading path 18. Further, the loading port 10 is provided with a lid 19 for opening and closing the loading port 10. A disposable diaper D having a polymer that retains water is charged into the loading port 10.

A wet crusher (for example, a known disposer) is used for the crushing unit 20. The crushed portion 20 has a substantially cylindrical shape, and the upper end thereof is connected to the lower end of the input path 18. The crushing portion 20 has a rotary plate 20A, a plurality of hammers 20B, an impeller 20C, and a circulation path 20D. The rotary plate 20A has a disk shape and is arranged in the crushing portion 20 so as to spread in the horizontal direction. The plurality of hammers 20B are formed so as to project upward from the upper side of the rotary plate 20A so as to be along the outer peripheral edge portion of the rotary plate 20A. The impeller 20C has a flat plate shape and is formed so as to hang down from the lower surface of the rotary plate 20A. A plurality of blades 20E are provided on the inner peripheral surface of the crushing portion 20 at positions facing the outside of the rotating trajectories of the plurality of hammers 20B.

A motor 20G is arranged below the crushing portion 20 so that the rotating shaft 20F extends in the vertical direction. The rotating shaft 20F of the motor 20G is connected to the center of the rotating plate 20A. In the crushing portion 20, when the rotating shaft 20F of the motor 20G rotates, the rotating plate 20A rotates with the rotation of the rotating shaft 20F. The operation of the motor 20G is controlled by a control unit (not shown).
Here, an operation unit (not shown) is electrically connected to the control unit, and the user who uses the crushing device 1 operates the operation unit to start or end the operation of the crushing device 1. It is structured so that it can be used.
Further, the first load detection unit 50 is electrically connected to the motor 20G of the crushing unit 20. The first load detecting unit 50 is configured to detect the magnitude of the current consumption consumed by the motor 20G of the crushing portion 20, and to detect the first load related to the crushing portion 20 based on the detected magnitude of the current consumption. ing. Specifically, the magnitude of the current consumption consumed by the motor 20G of the crushing portion 20 is considered to be directly proportional to the magnitude of the first load, and the magnitude of the current consumption is determined by the magnitude of the first load related to the crushing portion 20. Treat as a consumer. That is, the first load detecting unit 50 detects the magnitude of the first load related to the crushing unit 20.

The inside of the crushed portion 20 is divided into two upper and lower spaces by a rotating plate 20A. The space above the rotating plate 20A is a crushing space C for crushing the inserted disposable diaper D. The space below the rotating plate 20A is a storage space R in which the crushed disposable diaper D is stored. That is, the crushing unit 20 is formed with a crushing space C for crushing the disposable diaper D and a storage space R for storing the crushed disposable diaper D.
One end of the circulation path 20D communicates with the crushing space C, and the other end communicates with the storage space R. That is, the circulation path 20D communicates the crushing space C and the storage space R.

One end of the discharge passage 11 communicates with the storage space R of the crushing portion 20. The other end of the discharge path 11 communicates with the stirring tank 30, which will be described later.
The first on-off valve 12 is, for example, a known electric ball valve. The first on-off valve 12 is provided on one end side of the discharge path 11 and opens and closes the discharge path 11. The operation of opening and closing the first on-off valve 12 is controlled by a control unit (not shown).

A space is formed inside the stirring tank 30. The other end of the discharge path 11 is connected to the upper side of the stirring tank 30, and the discharge path 11 communicates with the space inside the stirring tank 30. That is, the stirring tank 30 communicates with the downstream side of the discharge path 11. At the bottom of the space inside the stirring tank 30, a propeller 30B connected to a rotating shaft of the motor 30A is arranged. The operation of the motor 30A of the stirring tank 30 is controlled by a control unit (not shown). Further, a discharge port 30C is formed by opening at the bottom of the space inside the stirring tank 30. The bottom of the space inside the stirring tank 30 is inclined downward toward the discharge port 30C.

Further, a second load detection unit 51 is electrically connected to the motor 30A of the stirring tank 30. The second load detection unit 51 is configured to detect the magnitude of the current consumption consumed by the motor 30A of the stirring tank 30 and detect the second load related to the stirring tank 30 based on the magnitude of the detected current consumption. ing. Specifically, the magnitude of the current consumption consumed by the motor 30A of the stirring tank 30 is considered to be directly proportional to the magnitude of the second load, and the magnitude of the current consumption is treated as the second load related to the stirring tank 30. .. That is, the second load detection unit 51 detects the magnitude of the second load related to the stirring tank 30.

The decomposing agent charging port 13 is for charging the decomposing agent into the crushing unit 20. The decomposition agent charging port 13 is provided separately from the charging port 10, and is formed by opening into the charging path 18. Further, a decomposing agent charging device 13A is attached to the decomposing agent charging port 13. The decomposing agent charging device 13A uses, for example, a feeder or the like, and is controlled by a control unit (not shown) so as to charge a predetermined amount of decomposing agent to the crushing unit 20. That is, the decomposing agent charging device 13A is provided in the decomposing agent charging port 13, and the decomposing agent is charged into the crushing unit 20.

Further, in the decomposition agent charging device 13A, the first control unit 52 and the second control unit 53 are electrically connected. A signal corresponding to the magnitude of the first load detected by the first load detection unit 50 is input to the first control unit 52, and the decomposition agent is charged from the decomposition agent charging device 13A based on this signal. Controls the loading device 13A. A signal corresponding to the magnitude of the second load detected by the second load detection unit 51 is input to the second control unit 53, and the decomposition agent is charged from the decomposition agent charging device 13A based on this signal. Controls the loading device 13A.

Further, in the vicinity of the decomposition agent input port 13, a decomposition agent input determination unit 13B for determining whether or not the decomposition agent has been input from the decomposition agent input port 13 is provided. For the decomposition agent input determination unit 13B, for example, a known infrared sensor or the like is used. The decomposition agent input determination unit 13B is configured to output a signal according to the determination result to the control unit (not shown).

The water supply unit 14 supplies water to the crushing unit 20. The water supply unit 14 is provided in the input path 18. The water supply unit 14 is provided with a solenoid valve 14A. Further, the solenoid valve 14A is controlled by the water supply control unit 54 so as to supply water to the crushing unit 20 based on a predetermined condition. Specifically, the water supply control unit 54 counts the elapsed time since the drive of the motor 20G of the crushing unit 20 is stopped, counts the number of times the motor 20G of the crushing unit 20 is driven, and the decomposition agent. It is configured to be able to count the amount of water added and the number of times the decomposition agent is added, or to count a predetermined time. As a result, the water supply control unit 54 has a predetermined elapsed time after the crushing unit 20 has stopped operating, every predetermined number of times the crushing unit 20 has operated, every predetermined amount of decomposition agent added, or every predetermined number of times of charging. The water supply unit 14 can be controlled to supply water at predetermined time intervals. Further, the solenoid valve 14A is configured to be controlled by a control unit (not shown) so as to supply water to the crushing unit 20.

Further, the water supply unit 14 is provided with a water supply determination unit 14B for determining whether or not water has been supplied from the water supply unit 14. For the water supply determination unit 14B, for example, a known flow rate sensor or the like is used. The water supply discrimination unit 14B is configured to output a signal corresponding to the discrimination result to the control unit (not shown).

One end of the drainage channel 15 communicates with the discharge port 30C of the stirring tank 30 and is connected to the drainage channel 15. The other end of the drainage channel 15 communicates with a sewer pipe (not shown). The drainage channel 15 has a trap 15A.
The second on-off valve 16 is, for example, a known electric ball valve. The second on-off valve 16 is provided on the upstream side of the trap 15A of the drainage channel 15 and opens and closes the drainage channel 15. The operation of opening and closing the second on-off valve 16 is controlled by a control unit (not shown).

The separation portion 40 is provided in the drainage channel 15 between the trap 15A and the second on-off valve 16. For the separation unit 40, for example, a known screw press device or the like is used. The separation unit 40 has a conical net unit 40A, a screw unit 40B arranged in the net unit 40A and formed along the inner peripheral surface of the net unit 40A, and a screw unit 40B at the center of the net unit 40A. It has a motor 40C that rotates around. Further, a separation unit discharge passage 40D is connected to the upper end of the net unit 40A. The separation unit 40 can separate and take out solid content from the waste liquid flowing through the drainage channel 15. The operation of the motor 40C of the separation unit 40 is controlled by a control unit (not shown).

One end of the overflow path 17 communicates with the input path 18, and the other end communicates with the upper side of the stirring tank 30 and communicates with the space inside the stirring tank 30.

Next, the operation of the crushing device 1 will be described.
First, the lid 19 is opened, and the used disposable diaper D (hereinafter, also referred to as a disposable diaper D) is inserted into the slot 10. Then, the operation unit (not shown) is operated to operate the crushing device 1.
First, the crushing device 1 operates the decomposing agent charging device 13A by the control unit to execute the decomposing agent charging step of charging the decomposing agent. Then, the solenoid valve 14A is operated by the water supply control unit 54 to execute the first water supply step of supplying a first predetermined amount of water from the water supply unit 14 to the crushing unit 20. The amount of the decomposing agent charged from the decomposing agent charging device 13A is 1 wt% or more based on the total weight of the charged disposable diaper D, the decomposing agent, and the water supplied in the first water supply step. In this way, the disposable diaper D and the decomposing agent are put into the crushing portion 20.

In the decomposing agent charging step, the decomposing agent charging discriminating step of determining whether or not the decomposing agent has been charged is executed by the decomposing agent charging discriminating unit 13B. In the decomposition agent input determination step, when the decomposition agent input determination unit 13B determines that the decomposition agent has not been input, a non-input signal indicating that the decomposition agent has not been input is output from the decomposition agent input determination unit 13B to the control unit. do.
Further, in the first water supply step, a water supply determination step of determining whether or not water has been supplied by the water supply determination unit 14B is executed. In the water supply determination step, when the water supply determination unit 14B determines that water is not supplied, a non-water supply signal indicating that water is not supplied is output from the water supply determination unit 14B to the control unit.
When a non-input signal or a non-water supply signal is input, the control unit controls not to drive the motor 20G of the crushing unit 20, or indicates that the decomposing agent is not input to the user of the crushing device 1, for example. It can be notified by a notification means such as a buzzer (not shown) connected to the control unit. The first on-off valve 12 is in a closed state from the time when the disposable diaper D is put in.

Next, the crushing device 1 executes a crushing step of crushing the disposable diaper D at the crushing unit 20. While the crushing step is being executed, the first on-off valve 12 is in a closed state. In the crushing unit 20, the thrown-in paper diaper D is crushed in the crushing space C, and the crushed paper diaper D is stored in the storage space R. Then, the disposable diaper D stored in the storage space R is sent out to the circulation path 20D by the impeller 20C rotating together with the rotating plate 20A, and flows into the crushing space C again. As a result, not only the disposable diaper D can be crushed more finely, but also the stagnation can be eliminated and the reaction between the polymer and the decomposing agent can be surely proceeded. Further, in the crushing section 20, the polymer that retains water while crushing the disposable diaper D is reacted with the decomposing agent, and the moisture retained by the polymer is taken out.

When executing the crushing step, the first load detecting unit 50 executes the first load detecting step of detecting the first load related to the motor 20G of the crushing unit 20. Specifically, the magnitude of the first load detected in the first load detection step is the magnitude of the current consumption of the motor 20G of the crushing unit 20.
As shown in FIG. 2, the current consumption of the motor 20G of the crushing unit 20 is maintained at the value A for a while after the crushing step is executed, and then gradually decreases from the value A and reaches the value B, and the value is reached. B is maintained.
When the disposable diaper D is crushed by the crushing unit 20, the current consumption of the motor 20G of the crushing unit 20 shows a value A. Further, when the reaction between the polymer and the decomposing agent proceeds and water is taken out from the polymer, the current consumption of the motor 20G of the crushing portion 20 gradually decreases from the value A. Then, when the reaction between the polymer and the decomposing agent is almost completed, the current consumption of the motor 20G of the crushing portion 20 shows a value B smaller than the value A.

In the first load detection step, a signal corresponding to the magnitude of the first load of the crushing unit 20 detected by the first load detection unit 50 is output to the first control unit 52. In the first control unit 52, the decomposition agent is additionally charged from the decomposition agent charging device 13A based on the signal corresponding to the magnitude of the first load of the crushing unit 20 input from the first load detecting unit 50. The first decomposing agent additional charging step for controlling the decomposing agent charging device 13A is executed. In the first decomposition agent additional charging step, for example, the magnitude of the current consumption of the motor 20G of the crushing portion 20 (that is, the magnitude of the first load) is a value B even after the crushing step is executed and a predetermined time elapses. If it is not the following, it is executed when the first control unit 52 determines. That is, the first decomposing agent addition step is a step for dealing with the case where the reaction between the polymer and the decomposing agent is considered to have not sufficiently progressed (that is, the amount of the decomposing agent added is considered to be small). .. At this time, the motor 20G of the crushing section 20 is continuously driven, and the reaction between the polymer and the decomposing agent can be further promoted in the crushing section 20. In this way, the crushing unit 20 crushes the disposable diaper D, and a waste liquid in which the crushed disposable diaper D, the water supplied in the first water supply step, and the decomposing agent are mixed is generated.

The signal corresponding to the magnitude of the first load of the crushing unit 20 detected by the first load detecting unit 50 is also output to the control unit. When the control unit determines that the magnitude of the signal corresponding to the magnitude of the first load of the crushing portion 20 is equal to or less than the value corresponding to the value B, the control unit opens the first on-off valve 12 in the closed state. .. Then, the waste liquid in the crushed portion 20 flows into the space inside the stirring tank 30 through the discharge path 11. That is, the discharge path 11 discharges the waste liquid from the crushing portion 20 to the stirring tank 30.

At this time, the control unit operates the solenoid valve 14A of the water supply unit 14 to execute a second water supply step of supplying a second predetermined amount of water from the water supply unit 14 to the crushing unit 20. In the second water supply step, a predetermined amount of water is supplied with respect to the amount of waste liquid generated in the crushing unit 20. The second predetermined amount of water supplied in the second water supply step is preferably 5 times or more the amount of the waste liquid generated in the crushing unit 20. This makes it possible to clean the inside of the crushed portion 20 while reliably transporting the waste liquid in the crushed portion 20 to the space inside the stirring tank 30. Further, the waste liquid is diluted with the water supplied in the second water supply step. As a result, the concentration of the decomposition agents Ca (calcium) and Cl (chlorine) contained in the waste liquid can be reduced, and the Ca component adheres to the sewer pipe and hardens, or the sewer pipe is corroded by Cl. It is possible to suppress such things.
If water overflows from the crushing section 20 when a second predetermined amount of water is supplied from the water supply section 14, a part of the water supplied in the second water supply step via the overflow passage 17 is sent to the stirring tank 30. It flows. The second on-off valve 16 is in a closed state from the time when the water supplied in the second water supply step and the waste liquid flow into the stirring tank 30.

Next, the crushing device 1 executes a stirring step of stirring the water supplied in the second water supply step and the waste liquid in the stirring tank 30. The second on-off valve 16 is in the closed state while the stirring step is being executed. First, the control unit starts driving the motor 30A of the stirring tank 30. As a result, the propeller 30B of the stirring tank 30 rotates, and the water supplied in the second water supply step and the waste liquid are stirred.

When the stirring step is executed, the second load detecting unit 51 executes the second load detecting step of detecting the second load related to the motor 30A of the stirring tank 30. Specifically, the magnitude of the second load detected in the second load detection step is the magnitude of the current consumption of the motor 30A of the stirring tank 30.
As shown in FIG. 3, the current consumption of the motor 30A of the stirring tank 30 shows a value C when the reaction between the polymer in the waste liquid and the decomposing agent has not sufficiently progressed (see FIG. 3A). Further, the current consumption of the motor 30A of the stirring tank 30 shows a value D smaller than the value C when the reaction between the polymer in the waste liquid and the decomposing agent has sufficiently progressed (see FIG. 3B).

In the second load detection step, a signal corresponding to the magnitude of the second load of the stirring tank 30 detected by the second load detection unit 51 is output to the second control unit 53. In the second control unit 53, the decomposition agent is additionally charged from the decomposition agent charging device 13A based on the signal corresponding to the magnitude of the second load of the stirring tank 30 input from the second load detecting unit 51. The second decomposition agent addition addition step for controlling the decomposition agent addition device 13A is executed. In the second decomposition agent additional charging step, for example, the magnitude of the current consumption of the motor 30A of the stirring tank 30 (that is, the magnitude of the second load) is a value D even after the stirring step is executed and a predetermined time elapses. If it is not the following, it is executed when the second control unit 53 determines. That is, the second decomposition agent additional addition step is for dealing with the case where the reaction between the polymer in the waste liquid and the decomposition agent is considered to have not sufficiently progressed (that is, the amount of the input decomposition agent is considered to be small). It is a process. At this time, the motor 20G of the crushing unit 20 is continuously driven, and the additionally charged decomposition agent is pushed out to the discharge path 11 by the impeller 20C rotating together with the rotating plate 20A and flows into the stirring tank 30. ..
At this time, the motor 30A of the stirring tank 30 is also continuously driven, and the reaction between the polymer and the decomposing agent can be further promoted in the stirring tank 30. In this way, in the stirring tank 30, the waste liquid generated in the crushing portion 20 and the water supplied in the second water supply step are stirred, and the reaction between the polymer in the waste liquid and the decomposing agent can be further promoted.
The decomposition agent charging port may be formed in the stirring tank 30, and the decomposition agent may be charged into the decomposition agent charging port from the decomposition agent charging device 13A. As a result, the decomposing agent can be directly charged into the stirring tank 30 when the second decomposition agent additional charging step is executed.

Next, the crusher 1 executes a separation step of separating the solid content from the waste liquid.
The signal corresponding to the magnitude of the second load of the stirring tank 30 detected by the second load detecting unit 51 is also output to the control unit. When the control unit determines that the magnitude of the signal corresponding to the magnitude of the second load of the stirring tank 30 is equal to or less than the value corresponding to the value D, the control unit opens the closed second on-off valve 16. .. Then, the control unit starts driving the motor 40C of the separation unit 40.

The waste liquid flowing down to the drainage channel 15 flows into the separation unit 40 and is lifted toward the upper end of the net unit 40A by the screw unit 40B rotated by the motor 40C of the separation unit 40. When the waste liquid is lifted by the screw portion 40B, the water content of the waste liquid passes through the net unit 40A, and the water content that has passed through the net unit 40A passes through the trap 15A and flows into the sewer pipe (not shown). Then, the solid content of the waste liquid that has not passed through the net unit 40A is lifted to the upper end of the net unit 40A and discharged from the separation unit discharge passage 40D. Further, the crushing device 1 can suppress the rise of odor from the sewer pipe and the invasion of insects and the like by the trap 15A.

After the separation step is completed, by operating the operation unit (not shown), the driving of the motors 20G, 30A, 40C of the crushing unit 20, the stirring tank 30, and the separation unit 40 is stopped.
Then, when a predetermined time elapses after the driving of the motors 20G, 30A, 40C of the crushing unit 20, the stirring tank 30, and the separating unit 40 is stopped, the water supply control unit 54 supplies water from the water supply unit 14. The device cleaning step of cleaning the inside of the crushing device 1 is executed. As a result, it is possible to prevent the waste liquid from remaining in the crushing device 1 and prevent the Ca component from adhering to and solidifying in the crushing device 1 and the inside of the crushing device 1 from being corroded by Cl.
Further, the water supply control unit 54 has a configuration capable of executing the device cleaning step every predetermined number of times that the crushing unit 20 operates, every predetermined amount of the decomposition agent or every predetermined number of additions, or every predetermined time. Has been done.

In this way, the crushing device 1 can crush the disposable diaper D at the crushing unit 20 and take out the water from the polymer whose water is retained by the decomposing agent. Then, by closing the first on-off valve 12 and closing the discharge path 11 until the reaction between the polymer and the decomposing agent sufficiently proceeds in the crushing portion 20, the polymer from which water has not been taken out flows into the stirring tank 30. Can be prevented. Further, the waste liquid can be satisfactorily stirred in the stirring tank 30.

Therefore, the crushing apparatus 1 of the present invention can satisfactorily extract water from the polymer of the disposable diaper D having a polymer that retains water with a simple structure.

The opening / closing portion of the crushing device 1 is the first on-off valve 12. Therefore, the discharge path 11 can be easily opened and closed by the first on-off valve 12.

Further, the crushing device 1 is provided with a decomposing agent charging port 13 for charging the decomposing agent separately from the charging port 10. Therefore, by providing the decomposing agent charging port 13, the decomposing agent charging device 13A for charging the decomposing agent into the decomposing agent charging port 13 can be easily attached.

Further, the crushing device 1 is provided in the first load detecting unit 50 for detecting the magnitude of the first load related to the crushing unit 20 and the decomposing agent input port 13 when the disposable diaper D is crushed by the crushing unit 20. The decomposition agent charging device 13A for charging the decomposition agent and the decomposition agent charging device 13A are controlled so that the decomposition agent is charged from the decomposition agent charging device 13A based on the magnitude of the first load detected by the first load detecting unit 50. The first control unit 52 is provided. Therefore, by detecting the magnitude of the first load by the first load detecting unit 50, the state of the reaction between the polymer and the decomposing agent in the crushing unit 20 can be grasped, and the first control unit 52 first. By charging the decomposition agent in an amount corresponding to the magnitude of the load from the decomposition agent charging device 13A, an appropriate amount of the decomposition agent can be charged in order to extract water from the polymer.

Further, in the crushing device 1, when the waste liquid is agitated in the stirring tank 30, the second load detecting unit 51 for detecting the magnitude of the second load related to the stirring tank 30 and the second load detecting unit 51 detect the waste liquid. The second control unit 53 that controls the decomposition agent charging device 13A so that the decomposition agent is charged from the decomposition agent charging device 13A based on the magnitude of the load is provided. Therefore, by detecting the magnitude of the second load by the second load detecting unit 51, the state of the reaction between the polymer and the decomposing agent in the stirring tank 30 can be grasped, and the second control unit 53 can grasp the state of the reaction. By charging the decomposition agent in an amount corresponding to the magnitude of the load from the decomposition agent charging device 13A, an appropriate amount of the decomposition agent can be charged in order to extract water from the polymer.

Further, the crushing device 1 includes a decomposition agent input determination unit 13B for determining whether or not the decomposition agent has been input from the decomposition agent input port 13. Therefore, by using the result obtained by the decomposing agent charging determination unit 13B as a condition for operating the crushing device 1, the crushing device 1 can be operated only when the decomposing agent is charged, or the crushing device 1 can be used. It is possible to notify the person that the decomposing agent has not been added, and the crushing device 1 can be operated properly.

Further, the crushing device 1 includes a water supply unit 14 that supplies water to the crushing unit 20. Therefore, by supplying water from the water supply unit 14 to the crushing unit 20, the disposable diaper D can be satisfactorily crushed in the crushing unit 20, and the inside of the crushing unit 20 can be washed.

In addition, the crushing device 1 has a predetermined elapsed time after the crushing unit 20 has stopped operating, every predetermined number of times the crushing unit 20 has operated, every predetermined amount of decomposition agent added, or every predetermined number of times of addition, or a predetermined number of times. A water supply control unit 54 that controls the water supply unit 14 to supply water is provided every time. Therefore, the inside of the crushing device 1 can be kept in a good state by supplying water to the water supply unit 14 at predetermined timings by the water supply control unit 54 and cleaning the inside of the crushing device 1.

Further, the crushing unit 20 forms a crushing space C for crushing the paper diaper D and a storage space R for storing the crushed paper diaper D and communicating with the discharge passage 11, and communicates the storage space R and the crushing space C. It has a circulation path 20D. Therefore, by circulating the disposable diaper D crushed by the circulation path 20D from the storage space R to the crushed space C, not only the disposable diaper D can be crushed more finely, but also the stagnation is eliminated and the reaction between the polymer and the decomposing agent is prevented. It can be surely progressed.

Further, the crushing device 1 includes a drainage channel 15 that communicates with the discharge port 30C and has a trap 15A, and a second on-off valve 16 that is provided on the upstream side of the trap 15A and opens and closes the drainage channel 15. Therefore, when the drainage channel 15 is connected to the sewer pipe, the trap 15A can prevent the odor from rising from the sewer pipe and the invasion of insects and the like, and further close the second on-off valve 16. This makes it possible to block odors and insects more reliably.

Further, the crushing device 1 includes a separation unit 40 for separating solid content from the waste liquid between the trap 15A and the second on-off valve 16. Therefore, when the waste liquid cannot be flowed to the sewer pipe as it is, the water of the waste liquid is flowed to the sewer pipe by the separation unit 40, the solid content of the waste liquid is captured, and the captured solid content is prevented from flowing to the sewer pipe. be able to.

The present invention is not limited to the first embodiment described by the above description and the drawings, and for example, the following examples are also included in the technical scope of the present invention.
(1) In Example 1, CaCl ₂ is used as the decomposing agent, but other chemicals containing Ca and Mg may be used, and water-soluble alkaline earth metals of calcium acetate, magnesium chloride, and magnesium nitrate. It may be salt or the like.
(2) In Example 1, a disposer is used as the crushing portion, but another device such as a grinder pump may be used as the crushing portion.
(3) The decomposing agent may be a solid or a liquid. When the decomposing agent is a liquid, a decomposing agent charging device having a decomposing agent storage tank for storing the decomposing agent and a pump for taking out the decomposing agent from the decomposing agent storage tank and sending the decomposing agent to the charging path is used.
(4) In the first embodiment, the water supply unit is provided in the input path, but the water supply unit may be provided in the stirring tank.
(5) In Example 1, the first load is detected from the current consumption of the motor of the crushing portion, but the measured water level and the flow rate of the circulation path are measured by measuring the water level of the waste liquid and the flow rate of the circulation path in the crushing section. May be treated as the first load related to the crushed portion.
(6) In the first embodiment, the first control unit, the second control unit, the water supply control unit, and the control unit are provided, but the first control unit, the second control unit, the water supply control unit, and the control unit are 1 It may be integrated and configured.
(7) In Example 1, the separation part is provided, but when the waste liquid may be flowed to the sewer pipe as it is, it is not necessary to separate the solid content from the waste liquid, so that the separation part may not be provided.
(8) While crushing the disposable diaper in the crushing portion, the waste liquid previously generated in the crushing portion and the water supplied in the second water supply step may be stirred in the stirring tank. In this case, after the waste liquid previously generated in the crushing portion and the water supplied in the second water supply step are conveyed to the stirring tank, the first on-off valve is closed to close the discharge path. This makes it possible to efficiently process disposable diapers.
(9) In the first embodiment, the first on-off valve is used as the on-off portion, but for example, a pump or the like that can close the discharge path in the stopped state may be used.
(10) In Example 1, a discharge path is used as a discharge portion. For example, a crushing portion is formed in one region of a box divided into two regions by a plate-shaped partition portion in which a through hole is formed. In the case of a configuration in which a stirring tank is provided in the other region, the through hole of this partition portion functions as a discharge portion.

1 ... Crushing device 10 ... Input port 11 ... Discharge channel (discharge part)
12 ... 1st on-off valve (opening / closing part)
13 ... Decomposing agent input port 13A ... Decomposing agent input device 13B ... Decomposing agent input discriminating unit 14 ... Water supply unit 15 ... Drainage channel 16 ... Second on-off valve 20 ... Crushing unit 20D ... Circulation path 30 ... Stirring tank 40 ... Separation unit 50 ... 1st load detection unit 51 ... 2nd load detection unit 52 ... 1st control unit 53 ... 2nd control unit 54 ... Water supply control unit C ... Crushing space D ... Paper diaper (crushed material)
R ... Storage space

Claims (9)

A slot for loading used disposable diapers with a polymer that retains moisture,
The paper diaper and the polymer that retains water while crushing the paper diaper are charged with a decomposing agent that takes out the water retained by the polymer from the polymer and puts the polymer in an irreversible state in which the polymer cannot retain water again . A crushed portion that reacts with the decomposition agent,
A discharge section that communicates with the crush section and discharges waste liquid from the crush section.
An opening / closing portion provided in the discharging portion to open / close the discharging portion,
A stirring tank in which the waste liquid that communicates with the downstream side of the discharge portion and is conveyed through the discharge portion is agitated to form a discharge port.
A decomposition agent input port for charging the decomposition agent separately from the input port,
A first load detection unit that detects the magnitude of the first load related to the crushing portion when the disposable diaper is crushed by the crushing portion.
A decomposing agent charging device provided at the decomposing agent charging port and charging the decomposing agent, and a decomposing agent charging device.
A first control unit that controls the decomposition agent charging device so that the decomposition agent is charged from the decomposition agent charging device based on the magnitude of the first load detected by the first load detecting unit.
A crusher characterized by being equipped with. The crushing device according to claim 1, wherein the opening / closing portion is a first on-off valve. A second load detection unit that detects the magnitude of the second load related to the stirring tank when the waste liquid is agitated in the stirring tank.
A second control unit that controls the decomposition agent charging device so that the decomposition agent is charged from the decomposition agent charging device based on the magnitude of the second load detected by the second load detecting unit.
The crushing apparatus according to any one of claims 1 and 2, wherein the crushing apparatus is provided. The crushing apparatus according to any one of claims 1 to 3 , further comprising a decomposition agent input determination unit for determining whether or not the decomposition agent has been input from the decomposition agent input port. The crushing apparatus according to any one of claims 1 to 4 , wherein the crushing unit is provided with a water supply unit for supplying water. The said, at a predetermined elapsed time after the crushing portion has stopped operating, at a predetermined number of times the crushing portion has operated, at a predetermined charging amount or at a predetermined charging number of the decomposing agent, or at a predetermined time. The crushing device according to claim 5 , further comprising a water supply control unit that controls the water supply unit to supply water. The crushed part is
A crushing space for crushing the disposable diaper and a storage space for storing the crushed disposable diaper and communicating with the discharging portion are formed, and the storage space and the crushing space are communicated with each other. The crushing apparatus according to any one of claims 1 to 6 , wherein the crushing apparatus is characterized. A drainage channel that communicates with the outlet and has a trap,
A second on-off valve provided on the upstream side of the trap to open and close the drainage channel,
The crushing apparatus according to any one of claims 1 to 7 , wherein the crushing apparatus is provided. The crushing apparatus according to claim 8 , further comprising a separating portion for separating solid content from the waste liquid between the trap and the second on-off valve.

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