JP4986869B2 - Garbage truck - Google Patents

Description

  The present invention relates to a cleaning vehicle capable of cleaning an oil / water separation tank installed in facilities such as a gas station and various machine factories.

  2. Description of the Related Art Conventionally, in a gas station or the like, waste oil and sewage are discarded along with the operation of the equipment, and therefore, an oil / water separation tank for separating and discarding oil and sludge mixed therein is installed for each equipment.

  Such an oil / water separation tank has a structure in which a plurality of separation tanks are sequentially provided adjacent to each other, and a discharge hole is provided at each fixed height position of the partition wall with each other adjacent to each other. Then, the waste liquid introduced from the inlet is separated and accommodated in the upper oil layer, the intermediate water layer, and the lower sludge layer such as metal powder and mud in the first separation tank.

  The waste liquid in the first separation tank flows to the next second separation tank through the discharge hole, and is also separated and accommodated in the oil layer, the intermediate water layer, and the sludge layer in the second separation tank. Similarly, in the third separation tank, the oil layer, the intermediate water layer and the sludge layer are separated and accommodated, and the water separated in the third separation tank is discarded and discharged into sewage or the like.

  The oil / water separation tank needs to be periodically cleaned for reasons such as safety and environmental protection. A cleaning vehicle is used for cleaning the oil / water separation tank (see, for example, Patent Document 1). Such a cleaning vehicle sucks oil water from an oil / water separation tank to separate oil and water, a water storage tank that sucks and temporarily stores the separated water, and sucks sludge in the oil / water separation tank. The receiver tank to be stored is mounted on the vehicle body.

  The oil-water separator is composed of a raw water tank that sucks and stores oil and water from the oil-water separation tank, a crude oil tank that separates and sucks only oil from the raw water tank, and an exhaust that separates and sucks only water from the raw water tank and temporarily stores it. It consists of an aquarium. The water stored in the drainage tank is continuously introduced into the water storage tank.

When cleaning the oil / water separation tank, first, the oil in the oil layer is suctioned and stored in the crude oil tank, and the intermediate water layer is stored in the water storage tank, and then the lower layer (sludge layer) of sludge is suctioned and stored in the receiver tank. To do. Thereafter, the water in the water storage tank is returned to the oil / water separation tank again. The oil in the crude oil tank and the sludge in the receiver tank are respectively transferred to treatment facilities such as incineration and reprocessing.
Japanese Utility Model Publication No.57-23590

  In the cleaning vehicle described above, the tank for storing oil and the tank for storing water are separate from each other, and a dedicated object is stored. That is, only oil was stored in the crude oil tank, and only water was stored in the water storage tank.

  However, depending on the gas station, for example, there is a case where there is almost no oil to be recovered and only water is desired to be stored. In such a situation, the conventional garbage truck can only store water in a dedicated water storage tank, so the yield capacity is limited and the crude oil tank is almost empty, so it does not function substantially. Improvement in practical use has been desired.

  The present invention has been made in view of such problems, and enables the oil or water to be selected and stored in a recovery tank so that the situation of the amount of oil or water in the field such as a gas station is provided. Accordingly, the present invention is to provide a cleaning vehicle that can respond flexibly according to the situation.

  The present invention relates to a cleaning vehicle in which a recovery tank that stores at least oil, water, or sludge, a receiver tank that stores sludge, and a drive source that sucks or discharges oil, water, or sludge is mounted on a vehicle body. In the recovery tank, a first tank and a second tank are defined by partition walls, and pipes for sucking oil, water or sludge are connected to the first tank and the second tank, respectively. The communication pipe provided with the flow path switching valve is connected.

  According to the present invention, when oil and water are accommodated, the communication between both pipes is blocked if the flow path switching valve is closed. As a result, oil can be accommodated in one first tank and water can be accommodated in the other second tank via each pipe.

  Further, if the flow path switching valve is opened, communication between both pipes is allowed, so that oil or water can be accommodated in both the first tank and the second tank via either pipe. It becomes.

  Further, since the first tank and the second tank are partitioned in the collection tank, space can be saved as compared with the case where separate tanks are mounted.

  The present invention employs a blower as a drive source for sucking or discharging oil, water and sludge, disposing a catcher having a dust collecting function upstream of the blower on the suction side, and further providing a dust collecting function downstream of the blower on the discharge side. It is in having arranged the catcher which has.

  In the present invention, continuous operation of suction or discharge can be performed by the blower, and clean air can be continuously circulated by the respective catchers.

  The recovery tank and the receiver tank of the present invention are connected to the suction side of the blower via a valve.

  Further, the recovery tank and the receiver tank of the present invention are connected to the discharge side of the blower via a valve.

  Since at least oil or water can be selected and stored in the recovery tank, the present invention can be adapted flexibly according to the situation of the amount of oil or water in the field such as a gas station. The effect can be expected.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of a cleaning vehicle according to the present invention. The cleaning vehicle 10 performs a cleaning operation of an oil / water separation tank 50 such as a gas station. As shown in FIGS. 2 and 3, an oil / water recovery tank 13 as a recovery tank is attached to a movable vehicle body 12. The receiver tank 15 and the suction pressure feeding means 20 are mounted. In addition, as demonstrated in the said background art, as the oil-water separation tank 50, what was divided into three chambers of the 1st separation tank 50a, the 2nd separation tank 50b, and the 3rd separation tank 50c is illustrated.

  The oil / water recovery tank 13 sucks and stores the waste oil tank 13a as a first tank that sucks and stores the oil 51 from the oil / water separation tank 50 (each of the separation tanks 50a, 50b, and 50c) and the water 52 of the oil / water separation tank 50. A water storage tank 13b serving as a second tank is partitioned by a partition wall 13c, and is disposed in a substantially midway portion in the front-rear direction of the vehicle body 12 and on one side (right side) in the left-right direction. The oil / water recovery tank 13 is provided with a confirmation window (not shown) through which the inside of the waste oil tank 13a and the water storage tank 13b can be visually observed.

  The receiver tank 15 sucks and stores the sludge 53 remaining inside after the suction of the oil water from the oil / water separation tank 50, and is arranged behind the oil / water recovery tank 13. The receiver tank 15 is independent of the oil / water recovery tank 13 and is larger than the oil / water recovery tank 13.

  The suction pressure sending means 20 mainly includes a blower 21 as a drive source driven by engine power via a power take-off device (not shown), a tertiary catcher 22 and a quaternary catcher 23. The tertiary catcher 22 and the fourth catcher 23 have a dust collecting function.

  The tertiary catcher 22 and the quaternary catcher 23 are integrally configured, and are disposed between the driver's seat 11 and the oil / water recovery tank 13 provided at the front portion of the vehicle body 12.

  The blower 21 is disposed on the left side of the oil / water recovery tank 13 and substantially in the center of the vehicle body 12 in the left-right direction. As shown in FIG. 1, the suction port 21 a of the blower 21 and the discharge port 22 a of the tertiary catcher 22 are connected via a suction tube 25. Further, the discharge port 21b of the blower 21 is connected to the suction port 23a of the quaternary catcher 23 via a discharge pipe 26, and the valve 3 is interposed in the middle of the discharge pipe 26. .

  Between the receiver tank 15 and the suction port 22 b of the tertiary catcher 22, a receiver tank pipe 28 with the valve 1 interposed is connected. Further, a pressurizing pipe 3 1 provided with a valve 2 is connected between the upstream side of the valve 1 of the receiver tank pipe 28 and the upstream side (blower 21 side) of the valve 3 of the discharge pipe 26. Has been.

  A relief pipe 29 provided with a relief valve 30 is connected between the downstream side of the valve 3 of the discharge pipe 26 and the upstream side of the valve 2 of the pressurizing pipe 3 1.

  With the piping configuration in the receiver tank 15, the receiver tank 15 is connected to the suction side of the blower 21 via the receiver tank pipe 28, the valve 1, the tertiary catcher 22, and the suction pipe 25. The receiver tank 15 is connected to the discharge side of the blower 21 via a receiver tank pipe 28, a valve 2 and a pressurizing pipe 3 1.

  Between a receiver tank pipe 28 connected to the receiver tank 15 and a discharge port 23b of the quaternary catcher 23, a catcher pipe 33 having a load release valve 6 interposed is connected.

  Pipes 35 a and 35 b are connected to the waste oil tank 13 a and the water tank 13 b of the oil / water recovery tank 13, respectively. These pipes 35 a and 35 b are connected to a receiver tank pipe 28 via a pipe 36 in which a valve 4 is interposed. It is connected to the. The pipe 36 is connected to the downstream side of the valve 1 of the receiver tank pipe 28. A pressurizing pipe 37 provided with a valve 5 is connected between the upstream side of the pressurizing pipe 31 with respect to the valve 2 and the pipe 36.

  In the piping configuration of the oil / water recovery tank 13, the oil / water recovery tank 13 is connected to the blower 21 via the pipes 35 a and 35 b, the pipe 36, the valve 4, the receiver tank pipe 28, the tertiary catcher 22 and the suction pipe 25. Connected to the suction side. The oil / water recovery tank 13 is connected to the discharge side of the blower 21 via pipes 35a and 35b, a pipe 36, a pressure pipe 37, a valve 5 and a pressure pipe 31.

  The suction circuit (receiver tank 15 and receiver tank pipe 28) from the receiver tank 15 to the tertiary catcher 22 is appropriately provided with a primary catcher and a secondary catcher having a dust collection function (not shown). .

  A waste oil tank 13 a of the oil / water recovery tank 13 is connected to a first intake / exhaust pipe 40 as a pipe provided with a valve 7, and a flexible hose 45 is connected to the first intake / exhaust pipe 40. Further, a second intake / exhaust pipe 41 as a pipe having a valve 8 is connected to the water storage tank 13 b, and a flexible hose 46 is connected to the second intake / exhaust pipe 41.

  In addition, a communication pipe 43 is connected between the intake and exhaust pipes 40 and 41 between the tanks 7 and 8 and the flow path switching valve 9 is interposed in the communication pipe 43.

  Next, the case where an oil-water separation tank is cleaned using the cleaning vehicle 10 configured as described above will be described with reference to FIGS. 1 and 4. In addition, the solid line arrow in FIG. 1 indicates the direction of air flow during suction, and the broken line arrow indicates the direction of air flow during pressurization. FIG. 4 shows the valve operating state of the air piping system of the cleaning vehicle, in which (O) shows the open state of the valve and (S) shows the closed state of the valve.

  First, the case where oil 51 of the upper layer of each separation tank 50a, 50b, 50c of the oil-water separation tank 50 shown in FIG. 1 is recovered (when sucked) will be described. A flexible hose 45 connected to the first intake / exhaust pipe 40 of the waste oil tank 13a of the oil / water recovery tank 13 is extended to the oil recovery position. Then, the valves 1, 2, 5 and the load release valve 6 are closed, and the valves 3, 4 are opened to drive the blower 21. The suction port 21a of the blower 21 communicates with the waste oil tank 13a through the suction pipe 25, the tertiary catcher 22, the receiver tank pipe 28, the pipe 36, and the pipe 35a.

  Further, the discharge port 21b of the blower 21 communicates with the atmosphere through the discharge pipe 26 and the fourth catcher 23. The valve 7 of the waste oil tank 13a and the valve 8 of the water storage tank 13b are closed.

  Thereby, since the blower 21 sucks the air in the waste oil tank 13a and discharges it to the atmosphere, the pressure in the waste oil tank 13a can be reduced. When the pressure in the waste oil tank 13a drops below a certain level, the upper oil 51 is sucked and collected in the waste oil tank 13a through the flexible hose 45 and the first intake / exhaust pipe 40 by opening the valve 7. In this manner, the oil is sequentially sucked and collected in the waste oil tank 13a, and when the oil reaches a certain amount, the work of sucking and collecting the oil 51 is stopped.

  Next, when collecting the water 52 of the intermediate layer of each separation tank 50a, 50b, 50c in the water storage tank 13b, the flexible hose 46 connected to the second intake / exhaust pipe 41 of the water storage tank 13b is connected to the intermediate layer recovery position. Extend to. At this time, the open / close states of the valves 1 to 5 and the load release valve 6 are the same as those described above. When the blower 21 is driven, the air in the water storage tank 13b is sucked and discharged to the atmosphere, so that the pressure in the water storage tank 13b can be reduced. If the pressure in the water storage tank 13b falls below a certain level, the valve 52 is opened, and the water 52 is sucked and collected into the water storage tank 13b through the flexible hose 46 and the second intake / exhaust pipe 41. When the water 52 is sequentially sucked and collected in the water storage tank 13b and reaches a certain amount, the work of sucking and collecting the water 52 is stopped.

  Next, when the sludge 53 below the separation tanks 50a, 50b, 50c is collected in the receiver tank 15, the flexible hose 47 connected to the receiver tank 15 via the pipe 15a is extended to the sludge collection position. . Then, the valve 4 is closed and the valve 1 is opened. The other valve 2, 3 and 5 are opened and closed in the same manner as in the oil recovery. As a result, the receiver tank 15 communicates with a receiver tank pipe 28 that communicates with the suction port 21 b side of the blower 21.

  Accordingly, when the blower 21 is driven, the air in the receiver tank 15 is sucked and discharged to the atmosphere, so that the pressure in the receiver tank 15 can be reduced. If the pressure in the receiver tank 15 drops below a certain level, the sludge 53 is sucked and collected in the receiver tank 15 through the flexible hose 47 and the pipe 15a by opening the valve 15b provided in the pipe 15a of the receiver tank 15. .

  Next, the case where the water in the water storage tank 13b is returned to the oil / water separation tank 50 (when pressurized) will be described.

  First, the valves 1, 2, 3, and 4 are closed, and the valve 5 and the load release valve 6 are opened to drive the blower 21. The blower 21 communicates with the water storage tank 13b through the discharge pipe 26, the pressure pipes 31 and 37, and the pipe 35b. The blower 21 communicates with the atmosphere via the suction pipe 25, the tertiary catcher 22, the catcher pipe 33, and the quaternary catcher 23.

  Therefore, when the blower 21 is driven, the blower 21 sucks air and supplies pressurized air to the water storage tank 13b. When the inside of the water storage tank 13 b is pressurized to a predetermined pressure, the water 52 in the water storage tank 13 b can be discharged to the oil / water separation tank 50 by opening the valve 8.

  The oil 51 collected in the waste oil tank 13a is appropriately conveyed to a treatment facility such as incineration and reprocessing. In the treatment facility, when the oil 51 in the waste oil tank 13a is discharged, the valves 1 to 5 and the load release valve 6 are opened and closed in the same manner as when the water in the water storage tank 13b is discharged. When the inside of the waste oil tank 13a is pressurized to a predetermined pressure by driving the blower 21, the valve 7 can be opened and the oil 51 can be discharged.

  Further, when the sludge 53 in the receiver tank 15 is discharged at a predetermined processing facility, the valves 1, 3, 4, and 5 are closed, and the valve 2 and the load release valve 6 are opened. The pressurized air discharged from the blower 21 is supplied to the receiver tank 15 via the discharge pipe 26, the pressure pipe 31 and the receiver tank pipe 28.

  And if the inside of the receiver tank 15 is pressurized to predetermined pressure, the sludge 53 in the receiver tank 15 can be discharged | emitted with pressurized air. The sludge 53 is discharged from a flexible hose 48 that is connected separately from the flexible hose 47 during suction.

  Further, depending on a gas station or the like, there is a case where there is almost no oil 51 and there is sludge 53 and water 52. In such a case, the flow path switching valve 9 is opened and the waste oil tank 13a is used as a water tank tank. That is, by opening the flow path switching valve 9, the water 52 sucked from the second intake / exhaust pipe 41 is stored in the water storage tank 13 b and also in the waste oil tank 13 a via the communication pipe 43. .

  The water 52 stored in the waste oil tank 13a can be discharged from the second intake / exhaust pipe 41 via the communication pipe 43, and is discharged from the first intake / exhaust pipe 40 in the same manner as the oil is discharged. You can also

  Even when only the oil 51 is to be recovered in the oil / water recovery tank 13, only the oil 52 can be recovered in the waste oil tank 13a and the water storage tank 13b by the same operation. In this way, the oil / water recovery tank 13 can contain the oil 51 and the water 52. Of course, the oil 51 or the water 52 is removed from both the waste oil tanks by opening the flow path switching valve. 13a and the water storage tank 13b, and can respond flexibly according to the situation of the amount of oil 51 or water 52 in the field such as a gas station.

  The oil / water recovery tank 13 can also be used as an auxiliary tank for the receiver tank 15.

  The present invention is not limited to the embodiment described above. For example, the oil 51 and the water 52 accommodated in the oil / water recovery tank 13 are illustrated as being discharged from the first intake / exhaust pipe 40 and the second intake / exhaust pipe 41. It is also possible to connect the pipes and discharge the oil 51 and the water 52 from each discharge pipe as appropriate.

  In the present embodiment, each of the valves 1 to 5, the flow path switching valve 9, the load release valve 6 and the like provided in the air circulation path may employ electromagnetic pilot valves that are opened and closed according to switch operations. Although it is possible, it is also possible to employ a manual valve that is opened and closed by manual operation as appropriate.

It is an air piping system diagram of the suction pumping vehicle of the present invention. It is a side view of the suction pumping vehicle. It is a top view of the suction pumping vehicle. It is a figure which shows the valve operation state of the air piping system of the suction pressure feeding vehicle.

Explanation of symbols

9 Flow path switching valve 10 Cleaning truck 13 Oil / water recovery tank (recovery tank)
13a Waste oil tank (first tank)
13b Water tank (second tank)
13c Bulkhead 15 Receiver tank 20 Suction pressure feeding means 21 Blower 22 Tertiary catcher (catcher)
23 4th Catcher (Catcher)
40 First intake / exhaust pipe (pipe)
41 Second intake / exhaust pipe
43 communication pipe

Claims (4)

In a cleaning vehicle equipped with a recovery tank in which at least oil, water or sludge is stored in a vehicle body, a receiver tank in which sludge is stored, and a drive source for sucking or discharging oil, water or sludge,
In the recovery tank, a first tank and a second tank are defined by partition walls, and pipes for sucking oil, water or sludge are connected to the first tank and the second tank, respectively. A cleaning vehicle to which a communication pipe having a path switching valve is connected.   2. The cleaning vehicle according to claim 1, wherein a blower is employed as the driving source, a catcher having a dust collecting function is disposed upstream of the suction side of the blower, and a catcher having a dust collecting function is disposed downstream of the blower on the discharge side. A cleaning car characterized by that.   3. The cleaning vehicle according to claim 2, wherein the recovery tank and the receiver tank are connected to a suction side of the blower via a valve.   4. The cleaning vehicle according to claim 2, wherein the recovery tank and the receiver tank are connected to a discharge side of the blower via a valve.

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