JP2012200708A - Solid-liquid separation recovery apparatus and garbage disposal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge garbage before the garbage tangles to be hard in a screen cylinder of a solid-liquid separation recovery device.SOLUTION: The solid-liquid separation recovery device includes a body part 3 which includes the screen cylinder and a screw and separates slurry into solid and liquid components; a press lid 13 which prevents the solid component (garbage) in the slurry from being discharged; a lever 15 which swings around a hinge 12 together with the press lid 13; and a translation device 18, a coil spring 16 being trained about between the lever 15 and translation device 18. The lever 15 and the coil 16 function a biasing unit of biasing the press lid 13 in such a direction as to prevent the garbage from being discharged. The translation device 18 serves as spring length adjuster of varying the length of the coil spring 16 and also as biasing force adjuster of adjusting the biasing force to the press lid 13.

Description

  The present invention relates to a solid-liquid separation and recovery apparatus that recovers a solid component (soot) by solid-liquid separation of a slurry containing soot, and a soot processing system that connects a disposer and a solid-liquid separation and recovery apparatus.

  The disposer is an apparatus that pulverizes the straw and mixes it with water to produce a slurry. The slurry discharged from the disposer is generally discharged into the public sewer along with other waste water. However, there is a problem that the quality of treated water in the sewage treatment plant cannot be maintained if an amount of slurry exceeding the treatment capacity of the sewage treatment plant is discharged. In some areas, slurry discharge to public sewers is restricted.

  Therefore, there is a case where a solid-liquid separation / recovery device is disposed on the downstream side of the disposer, and the slurry is solid-liquid separated to recover the solid component (salt) of the slurry (for example, Patent Documents 1 and 2). The recovered solid component is disposed of by, for example, incineration or landfill. Alternatively, it is recycled as a raw material for compost.

  The solid-liquid separation / recovery device may be configured by one-to-one combination with a disposer (for example, FIG. 1 of Patent Document 1), or may be configured by combining a plurality of disposers and a single solid-liquid separation / recovery device. (For example, FIG. 11 of Patent Document 1). The drainage system disclosed in Patent Document 2 includes a disposer in each of the lower treatment sink and the lower dredge sink, and the slurry discharged from the two disposers is discharged into one wastewater treatment device (solid-liquid separation and recovery device). ).

  Patent Document 3 discloses a solid-liquid separation and recovery device in which screws are arranged inside a screen cylinder having a number of dewatering holes. A supply port is provided at one end of the screen cylinder of the solid-liquid separation and recovery device, a discharge port is provided at the other end, and a pressing lid is provided at the discharge port. Slurry that has flowed into the screen cylinder through the supply port is pushed up by a screw, is pressed against a pressure lid, is compressed, and moisture in the slurry flows out of the screen cylinder through the dewatering hole. And the slurry which lost the water | moisture content, ie, a solid component, pushes up a pressing lid and is discharged | emitted from a discharge port.

  Now, the soot processed by the soot processing system may be hard or soft. There are also things that tend to get tangled together and some that don't. For example, cabbage and beef bowls are rich in fiber, so that the bowls derived from these tend to harden. In general, uncooked (heated) straw is hard and easily entangled. On the other hand, cooked rice cakes, that is, rice cakes derived from leftover rice, are soft and difficult to entangle.

  If soot solidifies in the solid-liquid separation and recovery device, the solid-liquid separation and recovery device may stop or break. Therefore, the solid-liquid separation and recovery apparatus of Patent Document 3 is configured to urge the holding lid with the weight of the weight to close the discharge port of the screen cylinder, and to overload the screw (the motor that drives the screw). A lifter is provided to lift the weight so that the weight of the weight is not added to the holding lid when the weight is added. Since it is comprised in this way, when a wrinkle is entangled and solidified in the screen cylinder, the pressing lid is opened and the discharge of the wrinkle is promoted.

JP 2008-246373 A JP 2007-1332078 A JP 2004-344960 A

  As described above, the solid-liquid separation / recovery device of Patent Document 3 is configured to prompt the opening of the pressing lid when the scissors are entangled and hardened in the screen cylinder. However, since the lump of cocoon entangled with fibers does not easily collapse, the lump of cocoon may remain with its tip exposed from the outlet, and the holding lid may remain open. In such a case, the water in the slurry is discharged from the discharge port through the lump. Or only a part of the lump of crab collapses and the other part remains as it is, and as a result, the holding lid may remain open. In this case, the slurry containing sufficient water is discharged from the discharge port. As described above, the solid-liquid separation and recovery device of Patent Document 3 prompts the opening of the presser lid after the soot has become entangled and solidified, so that the mass of soot cannot be sufficiently removed, and the moisture and moisture in the slurry can be removed. There is a problem that the slurry containing is discharged as it is from the discharge port. That is, there is a problem that moisture cannot be separated from the slurry.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a solid-liquid separation and recovery device that can discharge soot before the soot is entangled and solidified in a screen cylinder. It is another object of the present invention to provide a soot processing system that can discharge soot before the soot gets entangled in the screen cylinder of the solid-liquid separation and recovery device.

  In order to achieve the above object, a solid-liquid separation and recovery apparatus according to a first aspect of the present invention includes a screen cylinder having a supply port, a discharge port, and a dewatering hole, and the supply port disposed inside the screen tube. A screw for pushing the slurry supplied to the screen tube through the discharge port, a presser lid at the discharge port of the screen tube for pressing the slurry discharged from the discharge port, and the presser cover Urging means for urging the discharge port in a direction to close the discharge port, and urging force adjusting means for arbitrarily adjusting the urging force of the urging means.

  The pressing lid is connected to the screen cylinder via a hinge and is swingably mounted around the hinge. The urging means is connected to the pressing lid and rotates around the hinge together with the pressing lid. And a biasing force adjusting means for arbitrarily changing the position of the fulcrum and changing the length of the coil spring. Spring length adjusting means may be used.

  Moreover, you may make it provide the control means which makes the said urging | biasing force adjustment means perform predetermined | prescribed operation | movement according to the input from an external device.

  A cocoon treatment system according to a second aspect of the present invention is installed in the solid-liquid separation and recovery device and the pretreatment sink, and pulverizes cocoon derived from food before cooking to produce a slurry. Disposer for pre-treatment discharged to the liquid separation and recovery device, and lower spear installed in the lower iron sink, pulverizing the rice cake derived from the remaining rice to produce a slurry, and discharging to the solid-liquid separation and recovery device When the disposer for lower treatment and the disposer for lower treatment are operated, the biasing force adjusting means is operated in a direction to reduce the biasing force of the biasing means, and when the lower disperser is operated And control means for operating the biasing force adjusting means in a direction to increase the biasing force of the biasing means.

  According to the present invention, since the urging force adjusting means is provided in the solid-liquid separation and recovery apparatus, the force for pressing the pressing lid can be adjusted according to the properties of the slurry to be processed. Therefore, the magnitude | size of the force of a pressing lid can be optimized, and a wrinkle can be discharged | emitted before a wrinkle solidifies in a screen cylinder.

  Further, if the urging means is a coil spring and the urging force adjusting means is a spring length adjusting means for changing the length of the coil spring, the solid-liquid separation and recovery device having the above-described effects can be obtained with a simple configuration. Can be realized.

  Moreover, if the control means for causing the biasing force adjusting means to perform a predetermined operation in accordance with an input from an external device is provided, automatic operation of the solid-liquid separation and recovery apparatus is facilitated.

  Further, according to the present invention, in the soot treatment system including the solid-liquid separation and recovery device, the pre-treatment disposer and the lower soot disposer, the holding lid of the solid-liquid separation and recovery device can be changed depending on which disposer is operated. The pressing force can be optimized.

It is a notional block diagram of the solid-liquid separation recovery device which shows an example of an embodiment of the present invention. It is a conceptual sectional view showing the detailed configuration of the main body of the solid-liquid separation and recovery device. It is a conceptual diagram which shows the effect | action of a linear_motion | direct_drive apparatus, (a) shows the state in a "forward position", (b) shows the state in a "backward position", respectively. It is a conceptual sectional view showing a modification of the solid-liquid separation and recovery device. It is a conceptual diagram which shows the structure of a cocoon processing system. It is a conceptual flowchart which shows the process by the control program installed in the control apparatus of a dredger processing system, (a) is a lower process program, (b) is a lower process program, (c) is an operation stop program. , Respectively.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  The solid-liquid separation and recovery apparatus 1 is an example of an embodiment of the present invention, and includes a main body 3 and a control device 4 inside a housing 2 as shown in FIG.

  As shown in FIG. 2, the main body 3 is configured to include a screen cylinder 6 inside the outer cylinder 5 and a screw 7 inside the screen cylinder 6.

  The outer cylinder 5 is a cylindrical part that holds the screen cylinder 6 and the screw 7, and includes a drain port 8 below. A drain pipe (not shown) is connected to the drain port 8. Moreover, the raw material and manufacturing method of the outer cylinder 5 are not particularly limited. For example, the outer cylinder 5 may be manufactured by appropriately processing a stainless steel pipe.

  The screen cylinder 6 is a hollow cylinder having a number of dewatering holes (not shown), and has a supply port 9 at the lower end and a discharge port 10 at the upper end. The supply port 9 communicates with the outside of the outer cylinder 5 and is connected to a pipe (not shown). The slurry conveyed through the pipe flows into the screen cylinder 6 from the supply port 9 and is discharged from the discharge port 10. Is done. Further, the water in the slurry is discharged to the outside of the screen cylinder 6 through the dewatering hole, and further discharged to the outside of the outer cylinder 5 through the drain port 8. The material and manufacturing method of the screen cylinder 6 are not particularly limited. For example, a stainless steel thin plate may be punched with a press to punch a number of dewatering holes, and then formed into a cylindrical shape and processed appropriately.

  The screw 7 is rotationally driven by a motor 11 fixed to the outer cylinder 5. When the screw 7 rotates, the slurry inside the screen cylinder 6 is pushed out toward the discharge port 10. The material and manufacturing method of the screw 7 are not particularly limited. For example, the screw 7 can be manufactured by winding a stainless steel strip spirally around a stainless steel pipe serving as a shaft and welding it. Alternatively, it may be cast.

  A pressing lid 13 is attached to the outside of the discharge port 10 of the screen cylinder 6 via a hinge 12. The holding lid 13 swings around the hinge 12 and is pressed against the discharge port 10 by an urging means described later so that the slurry (solid component) discharged from the discharge port 10 is pushed back into the screen cylinder 6. Act on. As a result, the slurry is sandwiched between the screw 7 and the pressing lid 13 and the water is squeezed out. The squeezed water is discharged from the dewatering hole. The remaining solid content (to be exact, “water that has been reduced in water”) is discharged from the discharge port 10 and further out of the solid-liquid separation and recovery device 1 through the duct 14, for example, a container such as a bucket. (Not shown).

  A lever 15 is connected to the pressing lid 13, and the lever 15 is integrated with the pressing lid 13 and swings around the hinge 12.

  Now, referring to FIG. 1 again, the description of the configuration of the solid-liquid separation and recovery apparatus 1 will be continued. The tip of the lever 15 is connected to the coil spring 16, and the other end of the coil spring 16 is connected to the fulcrum 17. Further, the tension of the coil spring 16 acts in a direction in which the pressing lid 13 is pressed against the discharge port 10. That is, the lever 15 and the coil spring 16 function as an urging unit that presses the pressing lid 13 against the discharge port 10.

  The fulcrum 17 is at the tip of the rod 19 of the linear motion device 18. That is, one end of the coil spring 16 is connected to the tip of the rod 19. The linear motion device 18 is a device that includes a servo motor 20 and a rack and pinion mechanism (not shown), and moves the rod 19 forward and backward by the servo motor 20. When the rod 19 is advanced, the fulcrum 17 approaches the lever 15 and the coil spring 16 contracts. If the rod 19 is retracted, the fulcrum 17 moves away from the lever 15 and the coil spring 16 extends. Further, since the linear motion device 18 is driven by the servo motor 20, the length of the coil spring 16 can be arbitrarily changed by moving the rod 19 back and forth to an arbitrary position. Thus, the linear motion device 18 functions as a spring length adjusting means for changing the length of the coil spring 16 by arbitrarily changing the position of the fulcrum 17. Further, when the coil spring 16 extends, the tension increases, and the force for pressing the pressing lid 13 against the discharge port 10 increases. When the coil spring 16 is contracted, the tension is reduced, and the force for pressing the holding lid 13 against the discharge port 10 is reduced. Thus, it can also be said that the linear motion device 18 functions as an urging force adjusting means for arbitrarily adjusting the urging force of the urging means (coil spring 16) that presses the pressing lid 13 against the discharge port 10.

  The control device 4 is a computer that operates the solid-liquid separation and recovery device 1 in response to an instruction from an input device (for example, an operation switch) (not shown) or a higher-level control device (for example, a computer that controls a soot processing system 21 described later). It is. That is, the motor 11 and the servo motor 20 operate in response to a command from the control device 4.

  Now, the forward / backward position of the rod 19 of the linear motion device 18 is determined as “forward position” as shown in FIG. 3A and “reverse position” as shown in FIG. 18 positions the rod 19 at the “advance position” or “retreat position” in accordance with a command from the control device 4. Specifically, the rotation angle of the servo motor 20 corresponding to the “advance position” and “retreat position” is set in the control device 4 in advance, and the control device 4 sets the rotation angle to the servo motor 20. To position the rod 19.

  The “advance position” is selected when the solid-liquid separation / recovery device 1 processes slurry that tends to harden in the screen cylinder 6 including uncooked (non-heated) vegetable scraps, etc. Is selected in the case of processing a slurry that is relatively hard to harden and that contains cocoon after cooking (after heating), that is, a slurry containing leftover food. As described above, when the rod 19 of the linear motion device 18 is in the “advance position”, the force that presses the presser lid 13 against the discharge port 10 is small, so that the slurry contains uncooked (non-heated) vegetable waste and the like. Is processed, the slurry is discharged from the discharge port 10 before solidifying in the screen cylinder 6. Further, when the rod 19 of the linear motion device 18 is in the “retracted position”, the force that presses the presser lid 13 against the discharge port 10 increases, so that the slurry that is hard to solidify in the screen cylinder 6 that is derived from the leftovers is formed. Suitable for processing. In this case, since the slurry is strongly compressed in the screen cylinder 6, the solid content in the slurry is sufficiently dehydrated and discharged from the discharge port 10.

  Note that the “advance position” and “retreat position” are set in advance to optimal positions at which the above effects can be obtained. These optimal positions may be determined experimentally or theoretically. In general, the “advanced position” and “retracted position” are the positions where the coil spring 16 functions as a tension spring (pull spring), but the positions where the coil spring 16 functions as a compression spring (pressing spring). The “advance position” may be set. That is, the “advance position” may be set at a position where the coil spring 16 is shorter than the natural length. In this way, when the linear motion device 18 is set to the “advance position”, the pressing lid 13 is separated from the discharge port 10 and the discharge port 10 is opened.

  Further, the solid-liquid separation and recovery apparatus 1 may be configured as shown in FIG. That is, the weight 31 may be provided at the tip of the lever 15 extending to the opposite side of the fulcrum 12. If comprised in this way, the moment which rotates the pressing lid 13 in the direction away | separated from the discharge port 10 with the weight of the weight 31 will generate | occur | produce, and the force which presses the pressing lid 13 against the discharge port 10 can be made small. The weight 31 may be exchanged or the attachment position of the weight 31 may be changed so that the moment and the pressing force can be adjusted (changed).

  Next, the configuration and operation of the soot processing system 21 including the solid-liquid separation and recovery apparatus 1 will be described.

  As shown in FIG. 5, the soot processing system 21 includes a solid-liquid separation and recovery device 1, an under-treatment disposer 22, and an under-soot disposer 23 connected by a pipe 24 and a control device 25, and two disposers. This is a system for subjecting the slurry discharged from 22 and 23 to solid-liquid separation processing by one solid-liquid separation and recovery device 1. The lower processing disposer 22 and the lower lowering disposer 23 are provided with operation switches (not shown), and are activated / stopped individually. When the operation switch is operated, the lower processing disposer 22 or the lower eyelid disposer 23 starts to operate, and when the operation switch is released, the lower processing disposer 22 or the lower eyelid disposer 23 operates. To stop.

  The lower treatment disposer 22 is attached below the lower treatment sink 26, and the lower treatment disposer 23 is attached below the lower treatment sink 27. The lower treatment sink 26 is a sink that is placed in a work place that performs the preparation of food (for example, peeling of vegetables), and the lower work sink 27 is a sink that is placed in a work place that cleans the laid down dishes. For this reason, uncooked vegetable scraps or the like are input to the lower treatment disposer 22, and leftover food or the like discharged from the lower tableware is input to the lower disposer 23.

  When the lower-treatment disposer 22 and the lower-heel disposer 23 are started / stopped, the control device 25 starts / stops the solid-liquid separation / recovery device 1. Further, when starting / stopping the solid-liquid separation / recovery device 1, the control device 25 selects the position of the rod 19 (“advance position” / “retreat position”) of the solid-liquid separation / recovery device 1, Commands the separation and recovery device 1. That is, when the pretreatment disposer 22 is activated, the control device 25 commands the “advance position” to the solid-liquid separation / recovery device 1 and then activates the solid-liquid separation / recovery device 1. When the lower eyelid disposer 23 is activated, the control device 25 instructs the solid-liquid separation / recovery device 1 to “retreat position”, and then activates the solid-liquid separation / recovery device 1.

  In order to realize the above functions, the control device 25 is installed with three types of programs as shown in FIG. 6, that is, a lower processing program, a lower arm program, and an operation stop program.

  The lower processing program is started when the operation of the lower processing disposer 22 is started, that is, when the operation switch of the lower processing disposer 22 is operated. Command the rod 19 of the device 18 to be in the “advance position” (step S11). Then, the operation start of the solid-liquid separation and recovery device 1 is instructed (step S12), and the process is finished.

  The lower iron program is activated when the operation of the lower iron disposer 23 is started, that is, triggered by the operation of the operation switch of the lower iron disposer 23. Command the rod 19 of the device 18 to be in the “retracted position” (step S21). Then, the solid-liquid separation / recovery device 1 is instructed to start operation (step S22), and the process ends.

  The operation stop program is started when the operation of the lower processing disposer 22 or the lower heel disposer 23 is stopped, that is, when the operation switch of the lower processing disposer 22 or the lower heel disposer 23 is released, The timer is activated (step 31) and waits until the timer expires (step S32). When the time is up, the solid-liquid separation and recovery device 1 is instructed to stop operation (step S33), and the process is terminated. The waiting time by the timer is set in order to adjust the time lag between the pulverization process by the lower treatment disposer 22 and the lower heel disposer 23 and the solid-liquid separation process by the solid-liquid separation and recovery device 1. Even if the operation of the lower-treatment disposer 22 or the lower heel disposer 23 is stopped, the slurry remains in the pipe 24 between the lower-treatment disposer 22 or the lower heel disposer 23 and the solid-liquid separation and recovery device 1. Because. That is, the standby time is set in order to perform the solid-liquid separation process on the slurry remaining in the pipe line by the solid-liquid separation and recovery apparatus 1.

  The specific embodiment of the present invention has been described above, but the above embodiment is an exemplification, and the technical scope of the present invention is not limited by the above embodiment. The present invention can be freely applied, modified or improved within the scope of the technical idea described in the claims.

  For example, in the above-described embodiment, the coil spring 16 is illustrated as a specific example of the urging means, and the linear motion device 18 is illustrated as a specific example of the urging force adjusting means. However, the urging means and the urging force adjusting means are not limited thereto. Is not limited. The biasing means may be one that uses air pressure or hydraulic pressure, for example, an air spring or an air cylinder, or may use gravity. Moreover, what uses electromagnetic force, for example, an electric motor may be sufficient, and what is called an electromagnetic spring may be sufficient. The urging force adjusting means may be, for example, a device that adjusts air pressure or hydraulic pressure, or a device that adjusts current or voltage. Alternatively, a plurality of coil springs 16 may be stretched in parallel between the lever 15 and the fulcrum 17 and a mechanism for changing the number of coil springs 16 actually stretched may be provided. Further, two types of strong and weak coil springs 16 may be prepared and provided with a mechanism for mutually switching the two. It goes without saying that other types of springs can be used instead of the coil spring 16.

  Moreover, in the said embodiment, although the solid-liquid-separation collection | recovery apparatus 1, the disposer 22 for lower processing, and the disposer 23 for lower dredging were illustrated 1 each, the technical range of this invention is shown. This is not a limitation. A plurality of the solid-liquid separation / recovery device 1, the lower treatment disposer 22, or the lower punch disposer 23 may be provided. Further, the bag processing system 21 may include components not shown in FIG. For example, various valves, pumps, tanks, and the like may be provided in the middle of the pipe 24.

  Moreover, in the said embodiment, although the example provided with the control apparatus 25 of the soot processing system 21 separately from the control apparatus 4 of the solid-liquid separation collection | recovery apparatus 1 was shown, the control apparatus 25 was omitted and the solid-liquid separation / recovery apparatus One control device 4 may be configured to control the entire bag processing system 21. For example, the lower processing program or the like is installed in the control device 4, and ON / OFF states of the operation switches of the control device 4, the lower processing disposer 22 and the lower iron disposer 23 are input to the control device 4. Good.

  Moreover, in the said embodiment, although the example which implement | achieves the control apparatus 4 and the control apparatus 25 by installing predetermined software in a computer was shown, the control apparatus 4 and the control apparatus 25 are limited to such a thing. Not. Part or all of the functions of the control device 4 and the control device 25 may be realized by hardware. For example, the control device 4 and the control device 25 can be configured by a sequence control circuit that combines a relay and a timer.

  Moreover, in the said embodiment, although the control apparatus 4 operate | moved according to the instruction | command of the control apparatus 25, and also the linear motion apparatus 18 operate | moved according to the instruction | command of the control apparatus 4, the solid-liquid separation and recovery apparatus of this invention was shown. Is not limited to such. For example, a manually operated changeover switch is attached to the housing 2 so that the linear motion device 18 is operated by the operation of the changeover switch, that is, the magnitude of the force for pressing the pressing lid 13 against the discharge port 10 is increased. You may make it switch manually.

  1 to 5 are merely “conceptual diagrams”, and it is needless to say that the technical scope of the present invention is not limited by the illustrated shapes and dimensions.

DESCRIPTION OF SYMBOLS 1 Solid-liquid separation collection | recovery apparatus 2 Case 3 Main-body part 4 Control apparatus 5 Outer cylinder 6 Screen cylinder 7 Screw 8 Drainage port 9 Supply port 10 Discharge port 11 Motor 12 Hinge 13 Holding lid 14 Duct 15 Lever 16 Coil spring 17 Support point 18 Direct Actuator 19 Rod 20 Servo motor 21 Saddle processing system 22 Disposer for lower process 23 Disposer for lower process 24 Pipe 25 Controller 26 Lower process sink 27 Lower process sink 31 Weight

Claims (4)

A screen cylinder having a supply port, a discharge port and a dewatering hole;
A screw that is disposed inside the screen cylinder and pushes the slurry supplied to the screen cylinder through the supply port toward the discharge port;
A holding lid for holding the slurry discharged from the discharge port at the discharge port of the screen tube;
Biasing means for biasing the pressing lid in a direction to close the discharge port;
A solid-liquid separation / recovery device comprising urging force adjusting means for arbitrarily adjusting the urging force of the urging means. The holding lid is connected to the screen cylinder via a hinge and is swingably mounted around the hinge.
The biasing means is
A lever coupled to the pressing lid and swinging around the hinge together with the pressing lid;
A coil spring spanned between the lever and the fulcrum,
The solid-liquid separation and recovery device according to claim 1, wherein the biasing force adjusting means is a spring length adjusting means that arbitrarily changes the position of the fulcrum to change the length of the coil spring. The solid-liquid separation and recovery device according to claim 1, further comprising a control unit that causes the biasing force adjusting unit to perform a predetermined operation in accordance with an input from an external device. The solid-liquid separation and recovery device according to claim 1 or 2,
A disposer for lower processing that is installed in the lower processing sink, pulverizes rice cakes derived from ingredients before cooking to produce a slurry, and discharges it toward the solid-liquid separation and recovery device;
A disposer for a lower bran that is installed in the lower bran sink, pulverizes the bran derived from the remaining rice to produce a slurry, and discharges the slurry toward the solid-liquid separation and recovery device;
When the lower treatment disposer is operated, the urging force adjusting means is operated in a direction to reduce the urging force of the urging means, and when the lower heel disposer is operated, the urging force And a control means for operating the urging force adjusting means in a direction to increase the urging force of the means.

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