JP2009138471A - Vacuum car - Google Patents

Abstract

[PROBLEMS] To perform a pumping operation and a cleaning operation of sewage from a sewage tank using only a vacuum car.
An elliptical receiver tank 6 having a long axis extending in a vehicle width direction when viewed from the front on a truck body 2 capable of self-propelling a vacuum car 1; and a vacuum pump 4 for sucking sludge into the receiver tank 6; Is installed. Furthermore, a suction hose reel 22 for winding the suction hose 21 connected to the receiver tank 6 is installed on the upper surface of the receiver tank 6. Then, the cleaning device 40 (water pump) is driven by the engine or battery of the truck body 2 and water is discharged from the water tank 41 installed on the upper surface of the receiver tank 6 through the cleaning hose.
[Selection] Figure 1

Description

  The present invention relates to a vacuum car that sucks urine and sewage into a receiver tank using the suction force of a vacuum pump.

  2. Description of the Related Art Conventionally, a vacuum car including a self-propelled truck body, a receiver tank mounted on the truck body, and a vacuum pump that sucks sludge into the receiver tank is known (for example, Patent Document 1). reference).

In this type of vacuum car, the suction hose connected to the receiver tank is extended from the parked location to a sewage tank or the like to draw out urine and sewage. For this reason, the suction hole hose reel for winding the suction hose is relatively large and is usually installed on the upper surface of the receiver tank. In such a case, the receiver tank has an elliptical shape in which the major axis extends in the vehicle width direction when viewed from the front because of a vehicle height restriction.
Japanese Utility Model Publication No. 61-14770 (particularly FIG. 3)

  By the way, since the conventional vacuum car is not provided with the water supply apparatus, in order to wash | clean a sewage tank after drawing up sewage etc. from a sewage tank, the washing car may be needed separately. For this reason, there is a problem that work space for two vehicles is required and a large number of personnel are required, resulting in poor work efficiency.

  The present invention has been made in view of such points, and an object of the present invention is to make it possible to perform a work of pumping up sewage and the like from a sewage tank and a cleaning work only with a vacuum car.

  In order to achieve the above object, in the present invention, a vacuum car is provided with a cleaning device.

Specifically, in the first invention, a self-propelled truck main body, an elliptical receiver tank mounted on the truck main body and having a long axis extending in the vehicle width direction when viewed from the front, and the receiver tank Targeting a vacuum car equipped with a vacuum pump for sucking sludge and a hose reel for a suction hose installed on the upper surface of the receiver tank and winding a suction hose connected to the receiver tank,
The vacuum car includes a cleaning device driven by an engine or a battery of the truck body.

  According to said structure, washing | cleaning of the sewage tank after drawing up of a sewage tank is performed by discharging washing water using the engine of a truck main body, or the power of a battery. For this reason, since a separate washing car is not required, an extra parking space and a large number of personnel are not required.

In the second invention, in the first invention,
The cleaning device is
A water tank installed on the upper surface of the receiver tank;
A water pump driven by the engine or battery of the truck body;
A cleaning hose connected to the water tank and the water pump.

  According to the above configuration, the sewage tank can be washed after the sewage tank is pumped by driving the water pump with the engine or battery of the truck body and discharging the wash water from the water tank on the receiver tank via the washing hose. Done. For this reason, since a separate washing car is not required, an extra parking space and a large number of personnel are not required. Further, since the water tank is arranged in an empty space on the receiver tank that is elliptical when viewed from the front, the overall height of the vehicle does not increase.

According to a third invention, in the first or second invention,
The cleaning device has a pressure regulating valve on the discharge side of the water pump, and the return side of the pressure regulating valve is connected to the water tank.

  According to said structure, water is supplied to a water tank using a water pump by making water flow into the return side of a pressure regulation valve.

A fourth invention is the first to third inventions,
A pair of left and right water tanks are provided on the upper surface of the receiver tank.

  According to said structure, since the water tank is arrange | positioned at right and left, mass balance is good.

  As described above, according to the present invention, the cleaning device driven by the engine or battery of the truck main body is provided, so that the evacuation work such as sewage from the sewage tank and the cleaning operation are performed only by the vacuum car. Therefore, work efficiency can be improved in a small work space.

  According to the second invention, by installing a water tank on the upper surface of the receiver tank that is elliptical when viewed from the front, the water pump is driven by the engine or battery of the truck body to discharge the cleaning water from the cleaning hose, Without increasing the overall height of the vehicle, it is possible to easily perform the operation of pumping up sewage from the sewage tank and the cleaning operation using only the vacuum car.

  According to the third aspect of the invention, the water supply operation can be performed very easily by supplying water to the water tank by the water pump.

  According to the fourth aspect of the invention, by providing a pair of water tanks on the upper surface of the receiver tank, the balance of the mass of the vacuum car is improved and the driving operation is easy.

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

  1 to 3 show a vacuum car 1 according to an embodiment of the present invention, and this vacuum car 1 includes a track body 2 that can run on its own. The truck body 2 includes an engine (not shown), and the engine is provided with a power transmission device 3 (shown only in FIG. 5). The power from the power transmission device 3 is transmitted to the vacuum pump 4 and the water pump 5 (shown in FIGS. 5 and 6). The water pump 5 may be driven by a motor directly connected to a battery (not shown) mounted on the truck body 2.

  On the truck body 2, a long receiver tank 6 is mounted on the front and rear of an ellipse whose long axis extends in the vehicle width direction when viewed from the front. In the present embodiment, the receiver tank 6 is a fixed type, but it may be capable of dumping. The vacuum pump 4 is connected to the receiver tank 6.

  Specifically, as shown in FIG. 4, a float valve 7 is provided above the receiver tank 6, and a connection air pipe 9 is connected to the four-way valve 10 via the float valve 7. A safety valve 8 is connected in the middle of the connection air pipe 9 to prevent over-pressurization of the receiver tank 6. One port of the four-way valve 10 is connected to the drain separator 12, and further connected to the suction ports 4 a of the two vacuum pumps 4 through the check valve 13. The discharge port 4 b of the vacuum pump 4 is connected to the oil separator 15 via the sub oil separator 14 and is connected to one port of the four-way valve 10. The remaining one port of the four-way valve 10 is connected to the deodorizing device 16. The oil recovered by the sub oil separator 14 and the oil separator 15 is returned to the vacuum pump 4 via the oil strainer 17.

  A suction hose 21 is connected via a suction valve 20 provided on the back surface of the receiver tank 6. Since the suction hose 21 is usually 40 m to 60 m long, the suction hose 21 is wound around a columnar suction hose reel 22 for a suction hose installed on the upper surface of the receiver tank 6. Then, the vacuum pump 4 is driven using the power of the engine, and the atmospheric pressure in the receiver tank 6 is lowered so that urine, sewage and the like can be sucked from the suction hose 21. Since the receiver tank 6 is elliptical when viewed from the front, even if the hose reel 22 for suction hose is provided, it is within the height restriction.

  A discharge hose (not shown) can be connected to the discharge valve 23 provided at the lower rear end of the receiver tank 6. Although a pair of the discharge valves 23 are provided, only one may be provided.

  As shown in FIG. 5, the gear pump 25 is driven by the power transmitted to the power transmission device 3, and the high-pressure oil is supplied to the hydraulic motor 27 via the electromagnetic pilot switching valve 26. Is to be driven. The hydraulic oil is returned to the oil tank 29 via the return filter 28.

  As a feature of the present invention, the vacuum car 1 includes a cleaning device 40 for discharging pressurized cleaning water. The cleaning device 40 includes, for example, a pair of water tanks 41 on the upper surface of the receiver tank 6. Since the water tank 41 is equally disposed in the left and right spaces on the receiver tank 6 that is elliptical when viewed from the front, the overall height of the vehicle does not increase and the mass balance is good. As shown in FIG. 6, the water tank 41 is connected to the water pump 5 via a water supply hose 42. The pressure of the water pump 5 is configured to be adjustable by a pressure regulating valve 43 provided on the discharge side of the water pump 5. A connecting water hose 44 extending from the pressure regulating valve 43 is connected to a cleaning hose reel 46 through a swivel joint 45 and pressurized from a water discharge gun 48 at the tip of the cleaning hose 47 wound around the cleaning hose reel 46. Wash water is discharged. The cleaning hose reel 46 is provided, for example, below the rear end of the track body 2. A water supply opening / closing valve 49 is provided between the swivel joint 45 and the pressure adjustment valve 43.

  Further, the return side of the pressure regulating valve 43 is connected to the water tank 41. A Y-type strainer 50 is provided on the water absorption side of the water pump 5. A drain cock 51 is connected to the Y-type strainer 50, and the waste collected in the Y-type strainer 50 is discharged by opening the drain cock 51. A drain cock 51 is also connected to each water tank 41, and the water in each water tank 41 is discharged by opening the drain cock 51. A water supply valve 52 is connected to the water tank 41 so that pressurized tap water can be supplied from a water supply hose 57. In addition, water supply valves 53, 54, and 55 are provided to enable water supply from the water storage tank 56. By closing the water supply opening / closing valve 49 and supplying water to the return side of the pressure adjustment valve 43, water can be supplied to the water tank 41 using the water pump 5.

-Operation-
Next, the operation of the vacuum car 1 according to the present embodiment will be described.

  First, when sucking human waste, sewage or the like, the vacuum pump 4 is driven via the PTO to reduce the atmospheric pressure in the receiver tank 6 as indicated by the dashed-dotted arrow in FIG. . Thus, urine or the like is collected from the suction hose 21 into the receiver tank 6. Moisture in the air that causes a failure of the vacuum pump 4 is absorbed by the drain separator 12. The air discharged from the vacuum pump 4 is recovered by the sub oil separator 14 and the oil separator 15 and then released to the atmosphere through the deodorizing device 16.

  On the other hand, when the collected matter in the receiver tank 6 is discharged, the vacuum pump 4 is first driven through the PTO and the four-way valve 10 is switched as indicated by the solid line arrow in FIG. Thus, the inside of the receiver tank 6 is pressurized. Thus, the collected matter in the receiver tank 6 is discharged from the drain hose. In addition, the air flow at the time of the middle time is shown by a broken line.

  In order to clean the sewage tank after collecting the urine from the sewage tank, first, the gear pump 25 is driven by the power transmitted to the power transmission device 3 as shown in FIG. By operating the electromagnetic pilot switching valve 26, high-pressure oil from the gear pump 25 is supplied to the hydraulic motor 27 via the electromagnetic pilot switching valve 26, and the water pump 5 is driven by the hydraulic motor 27. Then, as shown by an arrow in FIG. 6, by operating the water discharge gun 48, the cleaning water is discharged from the water tank 41 on the receiver tank 6 through the cleaning hose 47. At this time, there is no need for a separate washing car, so no extra parking space or many personnel are required. For example, if the sewage after washing is simultaneously sucked from the suction hose 21, it is extremely efficient.

  In addition, when water is supplied to the water tank 41, first, the replenishment hose 57 is connected to a water supply or the like, and the water supply valve 52 is opened to supply water as indicated by the dashed arrow. When water is supplied from the water storage tank 56, the water supply valves 53 and 55 are opened, the water supply valve 54, the drain cock 51 and the water supply on / off valve 49 are closed, and the water pump 5 is driven. As a result, the water in the water storage tank 56 is supplied to each water tank 41 as indicated by the dashed arrows.

-Effect of the embodiment-
Therefore, according to the vacuum car 1 according to the present embodiment, the water tank 41 is installed on the upper surface of the elliptical receiver tank 6 and the water pump 5 is driven by the engine or battery of the truck body 2 and the cleaning water is supplied from the cleaning hose 47. Since the water can be discharged, the vacuum car 1 can be used to perform the work of pumping up the sewage from the sewage tank and the cleaning operation of the sewage tank, so that the work efficiency can be improved in a small work space. .

  In addition, since the water pump 41 supplies water to the water tank 41, the water supply operation can be performed very easily.

  Furthermore, by providing a pair of water tanks 41 on the upper surface of the receiver tank, the balance of the mass of the vacuum car 1 is improved and the operation is easy.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, the two water tanks 41 are arranged on the front upper surface of the receiver tank 6, but the number thereof may be one or three or more. The installation location may be an empty space without the suction hose hose reel 22 of the receiver tank 6, and the height of the water tank 41 should not exceed the height of the suction hose hose reel 22.

  In the above embodiment, the cleaning device 40 is used to wash the sewage tank after collecting urine, etc. However, before the collection, the washing water may be discharged into the sewage tank to make it easier to collect urine, etc. Of course, it may be used for cleaning the car 1 itself.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

It is a side view of the vacuum car concerning the embodiment of the present invention. It is a top view of a vacuum car. It is a rear view of a vacuum car. It is an air piping figure of a vacuum car. It is a hydraulic piping figure for driving a water pump. It is a water piping figure of a washing device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum car 2 Truck body 4 Vacuum pump 5 Water pump 6 Receiver tank 21 Suction hose 22 Suction hose reel 40 Washing device 41 Water tank 44 Connection water hose 47 Cleaning hose

Claims (4)

A self-propelled truck body, an elliptical receiver tank mounted on the truck body and having a long axis extending in the vehicle width direction when viewed from the front, a vacuum pump for sucking sludge into the receiver tank, and the receiver tank A vacuum car equipped with a hose reel for a suction hose that winds up a suction hose connected to the receiver tank,
A vacuum car comprising a cleaning device driven by an engine or a battery of the truck main body. The vacuum car according to claim 1,
The cleaning device is
A water tank installed on the upper surface of the receiver tank;
A water pump driven by the engine or battery of the truck body;
A vacuum car comprising a water hose and a cleaning hose connected to the water pump. In the vacuum car according to claim 1 or 2,
The vacuum car according to claim 1, wherein the cleaning device has a pressure regulating valve on a discharge side of the water pump, and a return side of the pressure regulating valve is connected to the water tank. In the vacuum car according to any one of claims 1 to 3,
A vacuum car characterized in that a pair of left and right water tanks are provided on the upper surface of the receiver tank.

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