JPS6125854B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum type road cleaning vehicle. Conventional vacuum road sweeping trucks spray a large amount of water onto the dust on the road and into the suction pipe in order to separate dust and suction air in the dust storage tank, and to prevent dirt from adhering to the suction hose. That was essential. For this reason, the space and weight occupied by the vehicle's water tank have increased, and there has been a limit to the amount of dust that can be loaded. In addition, since road watering is performed on the road, the road surface becomes dirty, and furthermore, a large amount of water is required.
It was necessary to replenish water several times a day.

The present invention has been made to eliminate the above-mentioned drawbacks. That is, the configuration of the present invention is that a dust storage tank 3 is provided adjacent to a dust storage tank 2 equipped with a rotary wet filter 1, and a vibrator 5 is installed in a dust hopper 4 of the dust storage tank 3.
Filter paper type (or filter cloth type) dry filter 6 having
It is characterized in that the side broom 7 is further surrounded by a dustproof cover 8 and a floorboard 23 of the engine room, and the dustproof cover 8 is connected to the air suction port of the suction pipe 9 through an opening.

An embodiment of the present invention will be described below based on the drawings.

The rotary wet filter 1 of the present invention uses a filter belt 10 made of relatively coarse woven fabric such as sponge or cloth, and as shown in FIG. Attach it diagonally with 12. A water nozzle 13 is provided near the bottom of the upper tension roller 11, and a drive motor 25 is provided at the shaft end of the lower tension roller 12 for rotating the filter belt 10 in the direction of the arrow in the figure. Further, a squeezing roller 14 is provided with the filter belt 10 interposed therebetween. The water nozzle 13 sprays a small amount of water on the filter belt 10 to moisten it and make it easier to absorb dust, and the squeezing roller 14 sprays a small amount of water onto the filter belt 10 to make it easier to absorb dust. 10 to enable continuous use.

As will be described later, the dust storage tank 3 is for completely filtering and storing fine dust leaking from the rotary wet filter 1. A dust storage tank door 15 is provided to discharge accumulated dust to the dust storage tank 2. Configure it so that you can. The dust storage tank 3 is connected to a dust hopper 4, and a paper-type dry filter 6 is provided above the dust hopper 4. The filter paper type dry filter 6 includes a filter paper 16 (or filter cloth) and a vibrator 5 as shown in FIG.
(air-driven type).

On the other hand, the side broom 7 installed at the bottom of the vehicle is surrounded by a dustproof cover 8 and the engine room floorboard 23 as shown in FIGS. Make an open connection. In addition, 17 is a suction pipe support caster wheel, 18
is a suction hose, and 19 is a cylinder. The reason why the side bloom 7 is surrounded by the dustproof cover 8 and the floor plate 23 is because the side bloom 7 kicks up a large amount of dirt when it sweeps out dirt from the roadside ditch, so the side bloom 7 is connected to the suction pipe inlet through an open connection. This is because by covering the suction pipe with a dustproof cover 8, the air sucked into the suction pipe is guided to the side bloom 7, and the dust that rises up is sucked in without leaking to the outside. (to suppress dust).

Since the present invention is constructed as described above, when cleaning a road, the dust swept out by the side broom 7 is moved to the suction pipe 9 side via the suction hose 18 without being blown up by the dust cover 8 to the outside. It is put into the dust storage tank 2. In this case, due to the rapid decrease in wind speed in the dust storage tank 2, heavy objects such as dirt and paper scraps fall and accumulate, but fine dust mixed in the suction air is removed by the suction air being sucked into the blower 20. It is filtered by the filter belt 10 as it moves. The filtered dust adheres to the filter belt 10 because the filter belt 10 is moistened by being sprayed with water by the water spray nozzle 13, and is squeezed out by the squeezing roller 14 as muddy water. The filter 10 is no longer clogged and can be used continuously. Conventionally, in order to suppress the discharge of dust, water was sprinkled into the suction pipe 9 to adsorb the dust with water droplets and store it in the suction hopper. Furthermore, since the fine dust mixed in the suction air cannot be completely filtered by the rotary wet filter 1, this filtered dust is then filtered by the filter paper type dry filter 6, and only the suction air is released from the blower 20. Discharge. This filter paper type dry filter 6 is equipped with a vibrator (air-driven type) 5, and when the blower 20 stops sucking in dust when dumping dust, the vibrator 5 vibrates to shake off the attached dust and reuse it without clogging. It becomes possible. The dust shaken off passes through a dust hopper 4 and is stored in a dust storage tank 3.

When discharging heavy dust and fine dust stored in the dust storage tank 2 and the dust storage tank 3, as shown in FIG. This is done by tilting the discharge door 21 to open it. In this case, the dust storage tank door 15 is automatically opened into the dust storage tank 2, and the fine dust stored in the dust storage tank 3 is discharged into the dust storage tank 2, and is stored in the dust storage tank 2. It is discharged to the outside together with heavy dust such as earth and sand.
Note that 22 is a locking device for the tank door 15.

As explained above, according to the present invention, by using a filter, only a small amount of water is sprinkled on the filter belt, so the water tank capacity can be reduced to less than half that of the conventional one. . What's more, it is possible to secure the required amount of water for the day by supplying water once a day (conventionally, the capacity of the water supply tank was twice as large as the water tank capacity).
They needed water supply two to three times a day. ) The water supply time is also greatly shortened, and the amount of water used is less than 1/5 compared to the conventional method, which has an economical effect.The vehicle water tank occupies less space and weight, so it can carry more dust. can be secured. Furthermore, since water is not sprinkled on the road surface and inside the suction pipe, the road surface will not become dirty, and the purpose stated at the beginning can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an overall plan view, Fig. 2 is an overall side view of the same, and Fig. 3 shows a dust storage tank, a rotary wet filter, a paper filter dry filter, and a blower. Plan view shown, No. 4
The drawings are a sectional view of the central part of FIG. 3, FIG. 5 is a perspective view of the paper-type dry filter, and FIG. 6 is a side view showing the dust discharge state. 1 is a rotary wet filter, 2 is a dust storage tank, 3 is a dust storage tank, 4 is a hopper, 5 is a vibrator (air-driven), 6 is a filter paper type dry filter, 7 is a side broom, 8 is a dustproof cover, 9 is the suction pipe, 10 is the filter belt, 1
1 and 12 are tension rollers, 13 is a water nozzle, 14 is a squeezing roller, 15 is a dust storage tank door, 16 is a filter paper, 17 is a suction pipe support caster wheel, 18 is a suction hose, 19 is a cylinder,
20 is a blower, 21 is a discharge door, 22 is a tank door locking device, 23 is a floor plate, 24 is a hinge, 2
5 is a drive motor, and 26 is a cylinder.

Claims (1)

[Claims] 1. A dust storage tank is installed adjacent to the dust storage tank equipped with a rotary wet filter, a paper filter type dry filter with a vibrator is installed in the dust hopper of the dust storage tank, and the side bloom is installed with a dust cover and the floorboard of the engine room. , and the dustproof cover is open-connected to the air suction port of the suction pipe.