JP2006088013A - Opening/closing valve operation state monitoring method in underwater decomposition type garbage disposal apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing valve operation state monitoring method in an underwater decomposition type garbage disposal apparatus capable of realizing stable decomposition disposal of a garbage by previously presuming the generation of operation failure or the like of the opening/closing valve and performing quick countermeasure by monitoring the opening/closing valve operation state during operation of garbage disposal. <P>SOLUTION: In the opening/closing valve operation state monitoring method, in the underwater decomposition type garbage disposal apparatus in which the garbage thrown to a garbage throwing apparatus 1 is introduced to a decomposition tank 2 after it is crushed in the garbage throwing apparatus 1 and the decomposition liquid stored in the decomposition tank 2 is decomposed/treated by a microorganism of the decomposition liquid while spraying and circulating it on a liquid surface of the decomposition liquid by a circulation pump 4, the opening/closing operation state of the opening/closing valve is monitored from the time required for switching of the respective opening/closing valve such as the opening/closing valve 43 provided on a pipe system of the underwater decomposition type garbage disposal apparatus. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an on-off valve operation state monitoring method in an underwater decomposition-type garbage disposal apparatus that treats garbage with microorganisms of a decomposition solution stored in a decomposition tank.

  Conventionally, there has been provided a so-called underwater decomposing type garbage processing apparatus, in which raw garbage is introduced into a garbage input device and crushed and then introduced into a decomposition tank, and in this decomposition tank, the garbage is decomposed by microorganisms of the decomposition solution. Yes.

And in this underwater decomposition-type garbage apparatus, it is made to circulate, guiding a decomposition liquid on the liquid level through an injection pipe with the circulation pump provided in the decomposition liquid, and injecting on the diffusion member below on the said liquid level. In this underwater decomposition type garbage processing apparatus, a plurality of pipes are provided, and each garbage is crushed by microorganisms in the decomposition solution while supplying oxygen to the decomposition solution. Various controls such as supply of decomposition liquid from the decomposition tank to the garbage input device and extraction of decomposition liquid from the decomposition tank to the outside are performed by opening and closing operations of on-off valves provided in the piping (for example, patents) Reference 1).
JP 2003-340495 A

  However, although it is unavoidable in terms of structure that the operation of the on-off valve will fail due to long-term garbage disposal operation, at the present time, the operator has not dealt with this after a failure such as the operation of the on-off valve has clearly occurred. I noticed and repaired it. For this reason, it takes extra time to stop the operation until the response to the failure is delayed and the repair is completed, thereby causing a decrease in operation efficiency.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to monitor the on / off valve operation state during the operation of garbage disposal, thereby preventing the on / off valve operation failure. An object of the present invention is to provide an on-off valve operating state monitoring method in an underwater decomposition type garbage disposal apparatus capable of achieving stable decomposition processing of garbage by predicting in advance and taking quick measures.

  In order to achieve the above object, the on-off valve operating state monitoring method in the underwater decomposition type garbage processing apparatus according to the first aspect of the present invention crushed the garbage input to the garbage input device by the garbage input device. In an underwater decomposing garbage treatment apparatus that is introduced into the decomposition tank later and decomposed by microorganisms of the decomposition liquid while circulating the decomposition liquid stored in the decomposition tank onto the liquid surface of the decomposition liquid by a circulation pump The open / close operation state of the on-off valve is monitored based on the time required for switching of the on-off valve provided in the piping system of the underwater decomposition type garbage disposal apparatus.

  In the on / off valve operating state monitoring method in the underwater decomposition type garbage disposal apparatus according to claim 2, the time required for switching is the time required from the on / off output to the on / off valve to the rise / fall of the on / off signal. It is characterized by.

  According to the present invention, it is possible to grasp in advance the secular change of the on-off valve due to long-term operation, thereby predicting in advance the occurrence of malfunction of the on-off valve and performing a quick response such as maintenance. It is possible to perform a good garbage disposal operation and to stably decompose garbage.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic configuration of an underwater decomposition type garbage disposal apparatus of the present invention.

  In FIG. 1, reference numeral 1 denotes a garbage input device, which includes a hopper 11 that inputs food waste and a disposer 12 that crushes the input food waste, and the food waste crushed by the disposer 12 is introduced into the introduction pipe. 13 is introduced into the decomposition tank 2. The hopper 11 is provided with an open / close lid 11a so as to be freely opened and closed.

  The decomposition tank 2 decomposes garbage, and stores a decomposition solution containing microorganisms that treat the garbage.

  The decomposition tank 2 is provided with a stirrer 3, a circulation pump 4 and a diffusion member 5.

  In the agitator 3, a stirring blade 33 provided on the rotation shaft 32 is rotatably provided by the rotation of the motor 31, and a flow for guiding the decomposition liquid stored in the decomposition tank 2 downward by the rotation of the stirring blade 33. It is generated and stirred by this flow so that the entire decomposition solution becomes homogeneous.

  The circulation pump 4 is disposed at the bottom of the decomposition tank 2 and sucks the decomposition liquid in the decomposition tank 2 and supplies it to the diffusion member 5. One end of a supply pipe 41 is provided on the discharge port side. Are connected. A supply port 41 a serving as the other end of the supply pipe 41 is disposed above the diffusion member 5, and a decomposition solution is sprayed from the supply port 41 a to the diffusion member 5.

  The diffusion member 5 is for diffusing the decomposition solution injected from the supply port 41a in the upper space, and oxygen is supplied into the decomposition solution by this diffusion to activate the activity of microorganisms. In other words, garbage is decomposed by aerobic microorganisms.

  Then, a circulating flow is generated in the decomposition liquid in the decomposition tank 2 by the downward water flow generated by the stirrer 3 and the water flow generated by suction of the circulation pump 4, and supply of the decomposition liquid to the liquid surface from the injection port 41a. In combination with the above, the entire decomposition solution is sufficiently stirred and homogenized. Thereby, the decomposition process by the microorganisms of a decomposition solution can be performed efficiently in a favorable state.

  On the other hand, a return pipe 42 is branched from the middle of the injection pipe 41, and through the return pipe 42, a part of the decomposition liquid is generated by opening and closing a supply valve 43 provided in the return pipe 42. It is made to return to the garbage input apparatus 1 (disposer 12).

  That is, by returning the decomposed liquid to the disposer 12 through the return pipe 42, the raw garbage introduced into the garbage input device 1 and crushed is introduced into the decomposition tank 2 through the introduction pipe 13 together with the decomposed liquid.

  Further, a drying device 6 is connected to the decomposition tank 2. The drying device 6 is for periodically extracting and drying residues and the like contained in the decomposition solution of the decomposition tank 2, and is connected through the branch pipe 61 by branching a branch pipe 61 to the injection pipe 41. ing. The branch pipe 61 is provided with two on-off valves 61a and 61b, and a circulation pipe 61c connected to the decomposition tank 2 is connected between the on-off valves 61a and 61b.

  Normally, by opening the on-off valve 61a and closing the on-off valve 61b, a part of the decomposition liquid is circulated to the decomposition tank 2 through the branch pipe 61 and the circulation pipe 61c. By closing 61 a and opening the on-off valve 61 b, the decomposition liquid accumulated during this period is introduced into the drying device 6.

  In other words, the drying device 6 does not draw a large amount of decomposition solution at a time from the viewpoint of capacity and performs drying, but periodically draws an amount corresponding to the volume and performs drying. , 61b is set so that the amount of the decomposing liquid collected in the branch pipe 61 corresponds to this amount. In this way, by extracting a part of the decomposition solution and drying it with the drying device 6, the concentration of the decomposition solution in the decomposition tank 2 such as salt content is adjusted in combination with the water supply by the water supply means described later.

  Moreover, the hot air which contributed to the drying in the drying device 6 is guided to the upper space of the decomposition tank 2 through the hot air pipe 62 by an exhaust blower (not shown). This hot air is used to maintain an appropriate temperature of about 40 ° C. at which the decomposition solution is activated. In addition to the hot air, the decomposition heat of microorganisms and the driving heat of the circulation pump 4 are also used to maintain the temperature of the decomposition solution. Has contributed.

  Further, the decomposition tank 2 is provided with a water supply means (not shown) for supplying water to the decomposition liquid, and decomposes by appropriately supplying water by the water supply means as the decomposition liquid is drawn into the drying device 6. In addition to adjusting the concentration of the liquid salt, etc., the water level of the decomposition solution is adjusted.

  Next, garbage processing by the underwater decomposition type garbage processing apparatus configured as described above will be described.

  First, garbage generated in a kitchen or the like is put into a hopper 11 of the garbage throwing device 1 and crushed by a disposer 12. The crushed garbage is introduced into the decomposition tank 2 through the introduction pipe 13 together with the decomposition liquid introduced into the garbage input device 1 through the injection pipe 41 and the return pipe 42 by the circulation pump 4.

  In the decomposition tank 2, the introduced garbage is decomposed by microorganisms in the decomposition solution. At this time, the decomposition liquid is sprayed on the liquid surface by injecting the decomposition liquid from the injection port 41a through the injection pipe 41 to the diffusion member 5 by the circulation pump 4, thereby supplying oxygen into the decomposition liquid. .

  In addition, the decomposition liquid is maintained at an appropriate temperature by supplying hot air from the drying device 6, and a circulation flow is generated in the decomposition liquid by the stirring action by the stirrer 3 and the suction action of the decomposition liquid by the circulation pump 4. The decomposition solution is sufficiently stirred to make it homogeneous.

  Therefore, the decomposition solution is in a state in which the activity of the microorganism is activated by these actions, and thereby the garbage can be efficiently decomposed.

  Further, in the drying device 6, the residue of the decomposition solution is periodically drawn and dried according to the amount of garbage put into the decomposition tank 2, and decomposed by drawing the decomposition solution into the drying device 6. When the liquid level drops, water is supplied from the water supply means as needed.

  In the underwater decomposition type garbage disposal apparatus that performs the garbage treatment as described above, the opening / closing operation states of the on-off valves such as the supply valve 43 and the on-off valves 61a and 61b are monitored during the garbage treatment operation. ing.

  The on / off operation status of the on / off valve is monitored by the fall of the open signal and the rise of the close signal when the on / off valve is switched from open to closed, and the fall of the close signal when the on / off valve is switched from closed to open. This is based on the rising state of the open signal, so that the occurrence of malfunction or the like can be predicted in advance.

  2 and 3 are flowcharts showing a specific example of monitoring the open / close operation state of the open / close valve. This flow shows a monitoring method when the on-off valve is switched from closed to open.

  First, when switching the on-off valve from closed to open, the count value of each counter is initialized in step S1, and then an open signal for switching from closed to open is output in step S2.

  Then, after waiting for a predetermined time (for example, 0.5 seconds) in step S3, it is determined whether or not the closing signal is turned off (falling) in step S4. If the closing signal is turned off, the flag “OFF” is set in step S5. And go to step S9. The opening / closing of the open signal is performed by detecting each limit switch, for example, together with turning on / off of a closing signal described later.

  On the other hand, if the closing signal is not turned off in step S4, the count value of the first counter is incremented in step S6, and a flag indicating that the closing signal is “ON” is set and the process proceeds to step S7.

  In step S7, it is determined whether or not the count value of the first counter is greater than or equal to a preset maximum value (MAX1). If the count value is less than or equal to the maximum value, the process proceeds to step S9, where the count value is greater than or equal to the maximum value. If there is, the count value is set to the maximum value in step S8, and the process proceeds to step S9. The maximum value set here is set in advance based on the normal operating time of the on-off valve in order to determine an error in later step S18.

  Next, in step S9, it is determined whether or not an open signal is input (rise). If an open signal is input, an "ON" flag is set in step S10 and the process proceeds to step S14.

  On the other hand, if the open signal is not turned on in step S9, the count value of the second counter is counted up in step S11, and a flag indicating that the open signal is “OFF” is set and the process proceeds to step S12.

  In step S12, it is determined whether or not the count value of the second counter is equal to or greater than a preset maximum value (MAX2). If the count value is equal to or less than the maximum value, the process proceeds to step S14, and the count value is equal to or greater than the maximum value. If there is, the count value is set to the maximum value in step S13, and the process proceeds to step S14. Note that the maximum value set here is set in advance based on the normal operating time of the on-off valve in order to determine an error in later step S21 together with the above-described maximum value (MAX1).

  In step S14, the process returns to step S3 until the operation from opening to closing of the on-off valve is completed, and the above-described operation is repeated. When the operation is completed, the output from opening to closing is cleared in step S15, and then to step S16. move on. In this case, the determination of whether or not the operation has ended may be made by setting, for example, a time required for opening and closing the on-off valve in anticipation of a failure and determining whether or not this time has elapsed.

  In step S16, it is determined whether the “ON” flag for the open signal and the “OFF” flag for the close signal are set at the same time. If not, the process proceeds to step S17. From step S18, an error message “A limit switch that detects a closing signal is faulty” is displayed on a display device (not shown).

  In step S17, it is determined whether or not the time based on the count value of the first counter is longer than 1 second, for example. If not, the process proceeds to step S19, and if the time is not the maximum value (MAX1). In step S20, an error message indicating that “the operation time from closing to opening of the on-off valve has been extended is a minor failure” is displayed, or the time based on the count value of the first counter is the maximum value (MAX1). In this case, since the closing signal remains on, an error message indicating that the on-off valve is completely malfunctioning is displayed in step S21.

  Further, in step S19, it is determined whether or not the time based on the count value of the second counter is longer than 8 (7 + 1) seconds, for example. If it is not larger than the maximum value (MAX2), an error message is displayed in step S20 indicating that the operation time from closing / opening of the on-off valve is prolonged, or the count value of the second counter is displayed. When the base time is the maximum value (MAX2), since the open signal is not input, an error message indicating that the on-off valve is not fully opened is displayed in step S22.

  In other words, when the open / close valve operates from closed to open, it is determined that it is normal if the close signal is interrupted and the open signal is received at a normal time, and when these open / close signals deviate from the normal time, the degree of time elapsed Various errors are displayed based on this.

  Further, the operating state of the on / off valve from opening to closing is monitored in the same manner as described above.

  By constantly monitoring the open / close operation state of the open / close valve in accordance with the open / close operation of the open / close valve in this way, it is possible to grasp in advance the secular change of the open / close valve due to long-term operation. Therefore, by predicting the occurrence of an on / off valve malfunction etc. in advance and performing a quick response such as maintenance, it is possible to perform an efficient operation by avoiding unexpected stoppage due to the on / off valve failure as much as possible. It is possible to dispose of food waste stably.

  Note that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope thereof.

  For example, the on-off valves to be monitored may not be all the on-off valves provided in the piping, and only the main on-off valves may be targeted except for the on-off valves that do not hinder the handling.

  The set time described in the determining step is merely an example, and may be set as needed based on the function of the on-off valve.

It is a figure which shows the schematic structure of the whole underwater decomposition | disassembly-type garbage processing apparatus of this invention. It is a flowchart figure explaining the monitoring method of the opening-and-closing operation state of an on-off valve. It is a flowchart figure explaining the monitoring method of the opening / closing operation state of an on-off valve similarly.

Explanation of symbols

1 Garbage input device 2 Decomposition tank 4 Circulation pump 43 Supply valve (open / close valve)

Claims (2)

The garbage input to the garbage input device is crushed by the garbage input device and then introduced into the decomposition tank. The decomposition liquid stored in the decomposition tank is sprayed onto the liquid level of the decomposition liquid by a circulation pump and circulated. In the underwater decomposing type garbage disposal equipment that decomposes this decomposition liquid with microorganisms,
Opening and closing in an underwater decomposition-type garbage treatment device characterized by monitoring the opening and closing operation state of the on-off valve based on the time required for switching of the on-off valve provided in the piping system of this underwater decomposition-type garbage treatment device Valve operating condition monitoring method. 2. The on-off valve operation state monitoring method in an underwater decomposition type garbage disposal apparatus according to claim 1, wherein the time required for switching is the time required from the on-off output to the on-off valve to the rise / fall of the on-off signal. .

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