JPH08108089A - Treatment of garbage and garbage treating machine - Google Patents

Abstract

PURPOSE: To lessen the load acting on a driving motor, to eliminate the overloading state at the time of starting a garbage treatment, to eliminate the locking state by the air of a garbage force feeding section, to make a size and weight smaller, to facilitate maintenance and to enable the easy and simple execution of the garbage treatment. CONSTITUTION: This garbage treatment method is executed by transmitting the rotation of a driving motor a via a first clutch 10 to a rotary pulverizing section to pulverize the garbage, etc., 17, disengaging this first clutch 10 and gradually engaging a second clutch 11 to rotate an impeller 15 upon decreasing of the driving current down to the prescribed value, drawing the pulverized garbage, etc., 17 out of the rotary pulverizing section and force feeding the garbage, etc., to a garbage discharging path 16. This garbage treating machine 1 is provided with a current detecting means for detecting the driving current of the driving motor 9, a clutch controller 12a and a driving motor controller 12b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kitchen waste disposal method and kitchen waste disposal machine for treating domestic water containing solid substances such as kitchen waste generated in a kitchen and discharging miscellaneous wastewater to a public sewer.

[0002]

2. Description of the Related Art Conventionally, kitchen waste generated in a kitchen has been incinerated, landfilled, or otherwise treated. However, kitchen waste contains a lot of vegetable wastes and leftover foods, and since it has a lot of water, it is complicated to store and transport, and it is apt to putrefaction, which is a sanitary problem. Furthermore, in apartment houses such as densely populated areas, it is desired to develop an appropriate treatment method such as garbage to improve the local environment.

Therefore, recently, as a method of treating garbage etc., the method of treating the garbage etc. generated from the sink by crushing it in the garbage treating section while supplying the running water and making it into a size that does not clog the discharge pipe and flowing it into the sewer through the discharge pipe. Is being considered.
This garbage disposal method cuts and grinds the garbage etc. by a cutter etc. which is rotated by a drive motor installed in the garbage disposal machine, and at the same time causes the discharge pipe to flow down due to the water pressure of the flowing water and the weight of the garbage etc. from the garbage disposal machine. The method of discharging is common. However, this method is not only unhygienic because the residue of crushed garbage etc. adheres to the garbage disposal part and the discharge pipe, and if left in that state, it gives off a bad odor and bacteria grows. However, this has the problem of shortening the life of the garbage processor. There is also a method of cleaning the garbage treatment section while supplying the flowing water after the garbage treatment, but in this case, a large amount of flowing water is wasted and the amount of crushed garbage that is discharged into the sewer is increased and the kitchen waste is removed. There is also the problem of increasing the burden on the treatment facility.

Therefore, recently, in order to solve such a problem, the following technique (Japanese Utility Model Laid-Open No. 63-91566) has been proposed. This technique will be described with reference to FIGS. 3 and 4. FIG. 3 is a schematic side cross-sectional view showing the structure of a conventional garbage treating machine, and FIG. 4 is a time chart of the operation of the conventional garbage treating machine. As shown in FIG. 3, domestic water containing solid matter such as kitchen waste is supplied to the kitchen processing section 21 as indicated by an arrow a from an input port 26 provided in the kitchen processing machine 20 attached to the bottom of the sink. . In the garbage processing unit 21, a rotary plate having a cutter 25 on its circumference is directly connected to the rotary shaft 24a of the drive motor 24 and rotates at high speed. The thrown garbage etc. is cut and crushed into a size of 1 to 2 mm by the cutter 25, becomes crushed garbage in the form of slurry, passes through the strainer 22, and passes through the strainer 22 as shown by the arrow b. Run down to. On the other hand, garbage processing machine 20
A pump 29 is provided in a pump chamber 23 provided in the lower part of the drive chamber 24 and is directly connected to a rotary shaft 24b of a drive motor 24 to rotate at high speed. The crushed kitchen waste that has flowed down is sucked by the pump 29 as shown by the arrow c, passes through the water passage 28, reaches the pump chamber 23, is pumped by the pump 29, and is discharged through the discharge pipe 27 as shown by the arrow d into the sewer. Is discharged to. In this way, the garbage treatment is completed, and after a predetermined time has elapsed or the discharge sound of the crushed garbage etc. from the garbage processing machine 20 is judged,
The voltage application to the drive motor 24 is stopped. FIG. 4 shows a time chart of the driving operation of the above garbage treatment. When a voltage is applied to the drive motor 24 and crushing of garbage etc. is started, a large starting current flows at the time of rising. After that, a driving current flows and the crushing progresses, and as time passes, the driving current gradually decreases from the crushing of the garbage etc. to the suction and pressure feeding of the crushed garbage etc., and the driving motor 24 is stopped to reduce the driving current. Stop. That is, in this method, a crushing unit for crushing kitchen waste or the like and a pump 29 for sucking and pumping the crushed kitchen waste or the like are directly connected to a drive motor 24 provided in the garbage processing machine 20 to drive both at the same time.

[0005]

However, the kitchen waste treatment method disclosed in Japanese Utility Model Laid-Open No. 63-91566 is
Since a crushing unit for crushing kitchen waste and the like and a pump for sucking and pumping the crushed kitchen waste and the like are directly connected to drive both at the same time, there is a problem that a heavy load is applied to the drive motor. In addition, there is a problem that the suction port of the pump will be locked by air because the drive motor will be overloaded at the beginning of garbage disposal and the air contained in the crushed garbage etc. cannot be separated sufficiently. . In addition, the stop timing of voltage application to the drive motor is determined by the elapse of a predetermined time or by the sound of crushed kitchen waste discharged from the garbage processing machine, so it may not be appropriate to judge the stop timing. There is also the problem of wasting power.

Therefore, the present invention solves the above-mentioned conventional problems, reduces the load on the drive motor, eliminates the overload state at the start of the garbage processing, and eliminates the air lock state of the garbage pumping unit. It is an object of the present invention to provide a garbage disposal method and a garbage disposal that enable downsizing and weight reduction, easy maintenance, and sanitary and simple garbage disposal.

[0007]

In order to achieve the above object, the method of treating garbage according to the present invention transmits the rotation of the drive motor to the rotary crushing unit through the first clutch to crush the garbage and drive the same. When the drive current of the motor decreases to a predetermined value, the first clutch is released, and the second clutch provided between the drive motor and the impeller is gradually connected to rotate the impeller to remove crushed kitchen waste. It is characterized in that it is sucked from the rotary crushing unit and is fed under pressure to the garbage discharge passage.

Further, in the garbage disposal of the present invention, the current value detecting means for detecting that the drive current of the drive motor decreases to a predetermined value while the first clutch is engaged, and the detection signal of the current value detecting means It is characterized in that it is provided with a clutch control means for releasing the one clutch and for connecting the second clutch when the impeller driving start time comes, and a motor control means for controlling the drive motor.

Further, it is desirable that the first clutch and the second clutch are slip clutches.

[0010]

The garbage disposal method of the present invention transmits the rotation of the drive motor to the rotary crusher through the first clutch to crush the garbage and the like, and when the drive current of the drive motor decreases to a predetermined value, 1 clutch is disengaged, and the 2nd clutch provided between the drive motor and the impeller is gradually connected to rotate the impeller, and the crushed garbage etc. is sucked from the rotary crushing part and the garbage is discharged. Since it is pumped to the road, it is possible to reduce the load on the drive motor and prevent overcurrent from flowing at startup.

Further, according to the garbage disposal of the present invention, the current value detecting means for detecting that the drive current of the drive motor decreases to a predetermined value while the first clutch is engaged, and the detection signal of the current value detecting means Since it is equipped with a clutch control means for releasing the first clutch and for connecting the second clutch when the driving start time of the impeller comes, and a motor control means for controlling the drive motor, the crushing operation of the garbage, the crushed kitchen waste, etc. Suction, pressure feeding operation and start / stop of the drive motor can be controlled arbitrarily to control the load state of the drive motor,
It is possible to reduce the amount of air contained in crushed garbage etc.

Further, since the first clutch and the second clutch are slip clutches, the rotational force of the drive motor can be gradually transmitted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a garbage disposal method and an garbage disposal machine according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic side sectional view of a kitchen garbage processor in an embodiment of the present invention. FIG. 2 is a time chart of the operation of the kitchen garbage processor in one embodiment of the present invention. In FIG. 1, 1 is a garbage disposal machine, 2 is a garbage disposal, 3 is a sink stopper, 4 is a hammer, 5 is a shredder, 6
Is a flywheel, 7 is a discharge pipe, 8 is a gas-liquid separation unit, 9 is a drive motor, 10 is a first clutch, 11 is a second clutch, and 12 is a control unit including a microcomputer and the like.
a is a clutch control means, 12b is a drive motor control means, 12c is a timer, 13 is a current sensor, 14 is a garbage pump, 15 is an impeller, 16 is a garbage discharge passage, 17 is garbage, etc., 18 is a garbage post-treatment facility. Is. The hammer 4, the shredder 5, the flywheel 6 and the like constitute a rotary crushing unit. A sink stopper 3 is provided on the upper part of the garbage processing machine 1,
The garbage processing part 2 is provided in the inside. Kitchen waste 17 including miscellaneous wastewater is input from the input port. Supply of electric power to the drive motor control means 12b provided in the control unit 12 is started, and the drive motor 9 starts to rotate. Next, the clutch control means 12a
The first clutch 10 is connected to the flywheel 6 provided in the rotary crushing unit in response to the crushing start signal from. First clutch 10
Is a slip clutch, and the rotation of the drive motor 9 can be gradually transmitted to the stationary flywheel 6 by the crushing start signal from the clutch control means 12a of the control unit 12 to gradually rotate the flywheel 6. It is a thing. Since the slip clutch is provided in this way to gradually transmit the rotation of the drive motor 9, it is possible to avoid an overloaded state of the drive motor 9, and to suppress the load to a small size and realize the weight reduction of the drive motor 9. it can. Kitchen waste 17
Is cut and crushed by a hammer 4 and a shredder 5 provided on a rotating flywheel 6. Here, the rotary crushing unit is composed of the hammer 4, the shredder 5, the flywheel 6, etc., but any method of crushing the kitchen waste 17 into a size of about 1 to 2 mm may be used. It can be one. The kitchen waste 17 that has been cut and crushed becomes the kitchen waste 17 that is mixed with the miscellaneous wastewater and crushed to pass through the gas-liquid separation section 8 provided in the discharge pipe 7, and then the kitchen pressure feed section 1
Reach 4. The gas-liquid separation unit 8 degass the air contained in the crushed garbage 17 or the like, and the air is collected at the suction port of the impeller 15 provided in the garbage pumping unit 14 to stop sucking the garbage 17 or the like. The purpose is to prevent the suction port of the garbage pumping unit 14 from being locked by air. The gas-liquid separating unit 8 is provided with a plurality of rod-shaped members having an appropriate length in the pipe, and the crushed kitchen waste 17 degasses air while the rod-shaped surface becomes a laminar flow and is downstream. is there. Although a rod-shaped member is used here, a plurality of through-holes having a diameter of about 3 mm may be provided as long as crushed kitchen waste 17 or the like forms a laminar flow downstream. A drive motor control means 12b is provided to the garbage pumping unit 14 via the second clutch 11.
An impeller 15 that is rotated by a drive motor 9 that is driven by a pressure feed start signal from The crushed kitchen waste 17 flowing down the discharge pipe 7 is sucked by the rotation of the impeller 15, and is pressure-fed in the kitchen pressure-feeding section 14 to the rear kitchen discharge passage 16 and discharged to the kitchen post-treatment facility 18. The second clutch 11 is a slip clutch, and the impeller 15 is stationary at a pressure feed start signal from the clutch control means 12a.
The rotation of the drive motor 9 can be gradually transmitted to the impeller 15 to gradually rotate.

As the crushing of the garbage 17 progresses, the load applied to the drive motor 9 is reduced, and the current sensor 13 which is a current value detection means provided in the drive motor 9 detects the drive current and transmits it to the clutch control means 12a. . A current transducer is suitable for the current sensor 13. When the current sensor 13 detects that the drive current has decreased to a predetermined value, it transmits this to the clutch control means 12a, and the clutch control means 12a transmits a disconnection signal for the first clutch 10 to the first clutch 10, The connection between the 1-clutch 10 and the flywheel 6 is released, the rotation of the flywheel 6 is completed, and the crushing operation of the garbage 17 is completed. The disconnection signal from the clutch control means 12a is simultaneously sent to the timer 1
2c. The timer 12c counts the time from the end of the crushing operation of the kitchen waste 17 to the start of pressure feeding of the crushed kitchen waste 17 by the impeller 15. The time until this pressure feeding is set in advance. This set time is related to the viscosity of the crushed kitchen waste 17 and the time required for deaeration, and is a delay time required to reach the kitchen waste pumping section 14 downstream. When the pumping is started, the set time is less than that in the kitchen pumping section 14. It is determined that the vicinity of the suction port is filled with crushed kitchen waste 17 or the like. Further, here, the timer 12c is set to a predetermined time, for example, 10 seconds, but the set time can be calculated by inputting a parameter value to a function based on an experimental value stored in the control unit 12. In this case, more accurate time can be set. Timer 12 after a predetermined time
When the signal from c is transmitted to the clutch control means 12a, the clutch control means 12a transmits a pressure feed start signal to the second clutch 11. Since the second clutch 11 is a slip clutch, it is gradually connected to the impeller 15, the drive motor 9 gradually rotates only the impeller 15, and the garbage pumping unit 14
The crushed kitchen waste 17 in the inside is discharged to the kitchen waste post-treatment facility 18 through the kitchen waste discharge path 16.

By the way, when the volume of the garbage pumping unit 14 is small, the pumping can be started in a short time, but the pumping takes a relatively long time. In addition, when the volume of the garbage pumping unit 14 is large, the time required to start the pumping is long, but the capability of the kitchen pumping unit 14 is large, and the pumping can be completed in a short time. The impeller 15 has rearward-facing blades and can be operated in either forward or reverse directions unless efficiency is a particular problem. It is possible to efficiently feed a large amount of crushed kitchen waste 17 or the like during the forward rotation, but the pressure feeding capability decreases during the reverse rotation. However, this may be sufficient when pumping a small amount of crushed kitchen waste 17 or the like.

When the load of the drive motor 9 is reduced and the predetermined second current value is reached as the crushed garbage 17 or the like is fed under pressure, the current sensor 13 provided in the drive motor 9 controls this. 12a. The pressure control release signal of the second clutch 11 is transmitted from the clutch control means 12a to the second clutch 11, and the second clutch 1
The connection between 1 and the impeller 15 is released, the rotation of the impeller 15 is terminated, and the crushed kitchen waste 17 or the like is pumped.
At the same time, a drive motor stop signal is transmitted from the drive motor control means 12b to the drive motor control means 12b, and the operation of the garbage processing machine 1 is completed.

The operation of the garbage processing machine 1 configured as described above will be described below. FIG. 2 is a time chart of driving operation. The kitchen waste 17 generated in the sink is sent to the kitchen processing section 2 by opening the sink stopper 3 as shown by an arrow a. When the kitchen waste 17 is stored in the kitchen processing section 2, the drive motor 9 is energized by the drive start signal from the drive motor control means 12b to start rotating. At this time, the drive motor 9 is not connected to the flywheel 6 and the impeller 15 and is in an unloaded state. Next, in response to the crushing start signal from the clutch control means 12a, the first
The clutch 10 is connected, and the rotation of the drive motor 9 is transmitted to the flywheel 6. At this time, since rotation is gradually transmitted without connecting all at once, a large starting current (I in FIG. 2) instantaneously flows through the drive motor 9, but the drive motor 9 is directly connected to the flywheel 6. The degree of overcurrent is smaller than that of the conventional example of the method described above, and is not the degree of overload. When the flywheel 6 rotates, the kitchen waste 17 and the like are cut and crushed between the hammer 4 and the shredder 5.
At that time, the medium drive current (II) during the crushing operation flows stably. As the crushing operation progresses, the drive current gradually decreases to a weak medium current (III), and further progresses to a weak current (IV). 17 crushed kitchen waste
As shown by the arrow b, it becomes kitchen waste 17 crushed together with the simultaneously supplied waste water, and flows down the discharge pipe 7 as shown by the arrow c. Then, the air is further degassed by the gas-liquid separation unit 8, and as shown by the arrow d, the garbage pumping unit 14
Stored in. Since the setting value (IV) of the drive current is stored in the memory in advance in the clutch control means 12a,
When it is detected that the drive current of the current sensor 13 has decreased to a predetermined current value, the clutch control means 12a determines the end timing of the crushing operation and outputs a disconnection signal to the first clutch 10. The flywheel 6 is separated by this disconnection signal, the rotation of the flywheel 6 is stopped, and the crushing operation is completed. Then, the second clutch 11 starts operating in response to the pressure feed start signal from the clutch control means 12a, and the second clutch 11 is gradually connected to the impeller 15 to transmit the rotational force. At this time, the rotation is gradually transmitted without connecting all at once. In this way, the kitchen waste pumping unit 1
The crushed kitchen waste 17 etc. stored in No. 4 is pressurized by the impeller 15 and discharged to the kitchen discharge path 16. At this time, the second medium current (V) flows stably, and the drive current gradually decreases as the crushed kitchen waste 17 and the like pumps.
The current becomes a small current (VI), further progresses to a weak current (VII), and the pressure feeding operation ends. Since the second set value (VII) of the drive current is stored in the memory in advance in the clutch control means 12a, when it is detected that the drive current of the current sensor 13 has decreased to the predetermined second current value, Since the clutch control means 12a determines that the pressure feeding operation has ended and outputs a pressure feeding cancellation signal to the second clutch 11 to separate the impeller 15, the rotation of the impeller 15 is stopped and the pressure feeding operation ends. At the same time, the drive motor control means 12
b detects the end of the garbage treatment, stops the supply of electric power to the drive motor 9, the rotation of the drive motor 9 is stopped, and the operation of the garbage treatment machine 1 is terminated.

In this embodiment, the pressure feeding operation is started after the crushing operation is completed. However, when the amount of crushed garbage 17 is large or the viscosity is low, the first clutch 10 and the second clutch 1 are used.
1 can be connected at the same time, or a part of the crushing operation and the pressure feeding operation can be overlapped. This is the clutch control means 12a
It suffices to separately set the third set value of the drive current set in advance. In the case of overlapping, both the flywheel 6 and the impeller 15 are simultaneously rotated by the drive motor 9 for a short time, but the crushing operation of the garbage 17 and the sucking and pumping operation of the crushed garbage 17 simultaneously proceed. Will be. However, the crushing operation is almost over, while suction,
Since the pressure feeding operation has just started, the load on the drive motor 9 does not increase. Further, at this point, the load of the crushed kitchen waste 17 is small because the viscosity thereof is low.

Since the first clutch 10 and the second clutch 11 are provided in this way and the drive current of the drive motor 9 is detected and controlled by the control section 12, the crushing and pressure feeding operations of the kitchen waste 17 can be separated. The load can be reduced because the rotational force of the drive motor 9 is gradually transmitted. Further, since the pressure feeding operation is started near the end of the crushing operation, the air contained in the crushed garbage etc. 17 can be degassed, and the air is accumulated in the suction port of the garbage feeding section 14 to be in the locked state. Can be prevented.

[0021]

As is apparent from the above embodiments, according to the present invention, the rotation of the drive motor is transmitted to the rotary crushing unit through the first clutch to crush the garbage and the drive of the drive motor. When the current decreases to a predetermined value, the first clutch is released, and the second clutch provided between the drive motor and the impeller is gradually connected to rotate the impeller to remove crushed kitchen waste. Since it is sucked from the rotary crushing unit and pressure-fed to the garbage discharge passage, the load on the driving motor at the time of the garbage disposal can be reduced, and the driving motor can be made small and lightweight.

Further, a current value detecting means for detecting that the drive current of the drive motor decreases to a predetermined value while the first clutch is engaged, and a detection signal of the current value detecting means releases the first clutch and the impeller. When the driving start time of is reached, the clutch control means for connecting the second clutch and the motor control means for controlling the drive motor are provided.
The first clutch and the second clutch can be automatically switched, maintenance is facilitated, and sanitary and simple garbage processing can be performed.

Further, since the first clutch and the second clutch are slip clutches, the structure is simple and the overload of the drive motor can be prevented.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a garbage processing machine according to an embodiment of the present invention.

FIG. 2 is a time chart of the operation of the kitchen garbage processor in the embodiment of the present invention.

FIG. 3 is a schematic side sectional view showing the structure of a conventional kitchen garbage processor.

FIG. 4 is a time chart of a driving operation of a conventional garbage processing machine.

[Explanation of symbols]

 1 Garbage Disposer 2 Garbage Disposer 3 Sink Stopper 4 Hammer 5 Shredder 6 Flywheel 7 Discharge Pipe 8 Gas-Liquid Separator 9 Drive Motor 10 First Clutch 11 Second Clutch 12 Controller 12a Clutch Control Means 12b Drive Motor Control Means 12c Timer 13 Current sensor 14 Garbage pumping unit 15 Impeller 16 Garbage discharge path 17 Garbage etc. 18 Garbage post-processing facility

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Kusakabe 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. The rotation of a drive motor is transmitted to a rotary crushing unit via a first clutch to crush garbage etc., and when the drive current of the drive motor decreases to a predetermined value, the first clutch is released, In addition, the second clutch provided between the drive motor and the impeller is gradually connected to rotate the impeller so that the crushed garbage and the like are sucked from the rotary crushing unit and pressure-fed to the garbage discharge path. Characterizing the garbage disposal method. 2. A rotary crushing unit for crushing garbage etc., a kitchen pumping unit provided with an impeller for sucking the crushed kitchen waste etc. from the rotary crushing unit and sending it to the garbage discharging passage, the rotary crushing unit and A drive motor for driving the impeller; a first clutch provided between the drive motor and the rotary crushing unit; and a second clutch provided between the drive motor and the impeller. Current value detecting means for detecting that the drive current of the drive motor decreases to a predetermined value while the first clutch is connected, and the first clutch is released and the impeller of the impeller is detected by a detection signal of the current value detecting means. A garbage disposal device comprising a clutch control means for connecting a second clutch when a drive start time comes, and a motor control means for controlling the drive motor. 3. The kitchen garbage processing machine according to claim 2, wherein the first clutch and the second clutch are slip clutches.