JPH053532Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a road cleaning device that collects road surface dust using a dust collector such as an air recirculation dust collector or a rotating brush that is mounted on a vehicle and moves forward with the vehicle. It is.

[Conventional technology]

Generally, as road cleaning devices mounted on trucks and the like, there are known air recirculation type and rotating brush type. FIG. 3 is a schematic configuration diagram of a conventional air recirculation type road surface cleaning device. This will be explained based on the figure. The road surface cleaning device 1 mounted on a commercially available truck (not shown) Hopper 2 as formed dust collection container
The intake port 2a of this hopper 2 has a
A dust collection hood 4 whose open end faces the road surface 3 is connected and supported by a flexible hose 5.
The exhaust port 2b of the hopper 2 and the dust collection hood 4 are connected by a flexible hose 9 and a pipe 8 equipped with a blower 6 and a filter 7, and the exhaust port 2b of the hopper 2 is connected to another An exhaust pipe 12 equipped with a blower 10 and a filter 11 is connected and opened to the atmosphere.

With this configuration, when the blowers 6 and 10 are started to move the truck forward,
Road surface dust 13 is sucked by the wind power of the blower 6 and collected into the hopper 13 via the hose 5, while the air containing fine dust is purified by the filter 7 and collected via the pipe 8 and hose 9. Returned to Food 4. In addition, a part of the air containing fine dust is transferred to the filter 1 by the wind force of the blower 10.
1 and is discharged into the atmosphere from an exhaust pipe 12.

FIG. 4 is a schematic diagram of a conventional rotary brush type road surface cleaning device. The road surface cleaning device 21 is mounted on a chassis and has a suction port 22a of a hopper 22.
A rotating brush 23 adjacent to the road surface 3 is connected through a duct 24, and an exhaust pipe 2 equipped with a filter 25 and a blower 26 is provided at the top of the hopper 22.
7 is connected open to the atmosphere.

With this configuration, when the blower 26 is started and the rotary brush 23 is rotated to move the vehicle forward, the dust 13 on the road surface 3 scraped up by the rotary brush 23 passes through the duct 24 to the hopper 2.
The air containing fine dust is collected in the exhaust pipe 27 and discharged into the atmosphere through the filter 25 through the exhaust pipe 27.

[Problem that the invention attempts to solve]

However, in the conventional road cleaning devices 1, 21 configured in this way, the filters 7, 1
1 and 25 are easily clogged and must be cleaned or replaced periodically, making the work cumbersome and time consuming. Especially when the dust contains moisture, the frequency of this clogging increases, causing many problems. It was. Also,
The air that has passed through the filters 11 and 25 is released into the atmosphere, but this air is mixed with fine dust that cannot be removed by the filters 11 and 25, which can lead to pollution problems. . Furthermore, since the blowers 6, 10, and 26 for generating negative pressure are provided, the noise caused by their operation is large, deteriorating the working environment.

[Means for solving problems]

In order to solve these problems, the road surface cleaning device according to the present invention includes a dust collection container in which a dust collection part that is moved on the road surface is connected to an inlet, and a water injection nozzle connected to its exhaust port. , a sealed water tank whose injection port is connected to the air layer, and a water pump connected to the water layer and which sends high-pressure water to the water intake port of the water injection nozzle. A sealed circuit is constructed of a dust collection section, a dust collection container, a water injection nozzle, a water tank, and a water pump.

[Effect]

According to the present invention, when the dust collection unit moves on the road surface as the vehicle runs, the inside of the dust collection container is filled up by the vacuum effect caused by the high pressure water discharged from the water pump and the negative pressure generated by the water injection nozzle. A negative pressure is created, which causes the dust on the road surface to be sucked in from the dust collector and collected into this container. And, unlike in the past, the fine dust is not discharged to the outside, but is always guided into the water tank, settles to the bottom of the water, and is finally discharged along with the water.

〔Example〕

Fig. 1 is a schematic diagram showing an embodiment of a road surface cleaning device according to the present invention. In the figure, a road surface cleaning device 31 mounted on the chassis of a traveling vehicle such as a commercially available truck (not shown) is provided with a hopper 32 formed in a cylindrical or cubic shape as a dust collecting container, and a suction port 32a of the hopper 32 is connected to a dust collecting hood 33 as a dust collecting section by a flexible hose 34.
The exhaust port 32b is connected to a water injection nozzle 35 through a pipe 3.
6, and this water injection nozzle 3
The nozzle of the water tank 37 is sealed.
The water injection nozzle 35 has a water intake connected to a water tank 37b through a pipe 39 equipped with a water pump 38. The water tank 37 has an exhaust port connected to a dust collecting hood 33 through a flexible hose 40.
It is connected to the.

The operation of the road surface cleaning device 31 configured as above will be explained. When the water pump 38 is started and the truck or the like is moved forward, the dust collection hood 33 touches the road surface 41.
At this time, the high pressure water discharged from the water pump 38 and the negative pressure generated by the water injection nozzle 35 create a negative pressure inside the hopper 32, so that the dust 42 on the road surface 41 is removed from the flexible hose 34. The water is collected into the hopper 32 through the hopper 32. That is, due to the vacuum effect caused by the jet flow ejected from the water injection nozzle 35 by the water pump 38, the inside of the hopper 32 as a dust collection container becomes negative pressure, which causes the road surface 4
The dust 42 on the top 1 is removed from the dust collection hood 33 which is the dust collection part.
is inhaled and collected in the hopper 32.

On the other hand, high pressure water is sent from the water injection nozzle 35 to the air layer 37a of the water tank 37, and pressurized air is sent to the dust collection hood 33 via the flexible hose 40, so that the air is sent to the hopper 32. The suction effect is enhanced. Since the dust collection hood 33, hopper 32, water injection nozzle 35, and water pump 38 are in a sealed path, fine dust is not discharged into the atmosphere, and water is The dust sent into the tank 37 settles at the underwater bottom of the water tank 37. In addition, when the dust settled in the water tank 37 reaches a predetermined amount, it is discharged together with the water from the discharge port at the bottom.

FIG. 2 shows a schematic configuration diagram of a rotary brush type road cleaning device as another embodiment of the present invention. It is provided at the front end. This rotating brush 52 is communicated through a duct 53 with the suction port 32a of the hopper 32, which is the same as in the previous embodiment. The rest of the structure is the same as that of the previous embodiment except that the exhaust port in the air layer part 37a of the water tank 37 is not connected to the dust collection part, so the same reference numerals will be given to it and the explanation thereof will be omitted. do.

With the above configuration, when the water pump 38 is started and the truck or the like is moved forward, the rotating brush 52 moves forward on the road surface 41 while rotating, so that the dust 42 on the road surface 41 is removed from the rotating brush 52. and collected into the hopper 32 through the duct 53. At this time, the water pump 38 and the water injection nozzle 35 create a negative pressure inside the hopper 32, so that the dust scraped up by the rotating brush 52 can be easily introduced into the hopper 32, and the dust generated by the rotation of the rotating brush 52 can be easily introduced into the hopper 32. Dust does not leak outside. The fact that the dust settles in the water in the water tank 37 and that this dust is discharged together with the water is the same as in the previous embodiment.

[Effect of idea]

As is clear from the above description, the road cleaning device according to the present invention includes a dust collecting container in which the dust collecting unit that is moved on the road surface is connected to the suction port, and a water injection nozzle connected to the exhaust port. , a sealed water tank whose injection port is connected to the air layer, and a water pump connected to the water layer and which sends high-pressure water to the water intake port of the water injection nozzle. The dust collection section, dust collection container, water injection nozzle, water tank, and water pump form a sealed circuit, so despite its simple configuration, the high-pressure water discharged from the water pump and the water injection nozzle are The vacuum effect caused by the generated negative pressure creates a negative pressure inside the dust collection container, and the dust on the road surface is sucked in and collected from the dust collection part, and fine dust is also discharged to the outside. Instead, it is always allowed to settle to the bottom of the water in a water tank, and can be recovered by ultimately discharging it with the water.

Therefore, the road cleaning device according to the present invention does not use a conventional filter to remove dust, so there is no need to worry about cleaning or replacing the filter. In addition to reducing labor, there is no need to worry about pollution problems such as environmental pollution because the air sucked in for dust collection is not released to the outside, and no noise is generated because a blower is not used to collect dust. This has an excellent practical effect of improving the environment.

[Brief explanation of drawings]

1 and 2 show an embodiment of a road cleaning device according to the present invention, FIG. 1 is a schematic configuration diagram of an air recirculation type road cleaning device, and FIG. 2 is a rotational surface cleaning device as another embodiment of the present invention. A schematic configuration diagram of a brush type road cleaning device, Figures 3 and 4 show a conventional road cleaning device, Figure 3 is a schematic configuration diagram of an air recirculation type road cleaning device, and Figure 4 shows a rotating brush type road cleaning device. FIG. 2 is a schematic configuration diagram of the device. 31, 51...road cleaning device, 32...hopper (dust collection container), 32a...intake port, 32b...
Exhaust port, 33... Dust collection hood (dust collection section), 34,
40... Flexible hose, 35... Water injection nozzle, 36, 39... Piping, 37... Water tank,
37a... Air layer part, 37b... Water layer part, 38...
Water pump, 41...road surface, 42...dust, 52
... Rotating brush (dust collection section), 53 ... Duct 1.

Claims (1)

[Scope of utility model registration request] a dust collection unit that is moved on a road surface; a dust collection container in which the dust collection unit is connected to an inlet; and a water injection nozzle connected to an exhaust port of the dust collection container;
A sealed water tank in which the injection port of the water injection nozzle is connected to the air layer, and a water supply pump that is connected to the water layer of the water tank and sends high-pressure water to the water intake port of the water injection nozzle. A road cleaning device comprising: a dust collecting section, a dust collecting container, a water jet nozzle, a water tank, and a water pump forming a sealed circuit.