JPH0458843B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a hydraulic dust collector that uses water pressure to collect sand grains and mud scattered on roads, etc., and that collects and reuses the sprayed water. It is related to.

(Prior Art) Generally, sand grains, mud, fallen leaves, etc. are scattered on the shoulder of a motorway. These grains of sand scattered on the road reduce the frictional force between the car's tires and the brakes, leading to traffic accidents. Especially when it rains lightly after a period of sunny weather.
The sand and mud become like grease, making the road surface slippery and dangerous. In addition, the sand particles and mud scattered on the road surface are blown up by the wind and turn into dust, which can pollute the surrounding environment.

For this reason, road managers such as local governments and public road corporations frequently clean road surfaces to maintain and manage the surfaces on which vehicles travel.

This road surface cleaning work is carried out by the mechanical power of a dust collector attached to a truck, but conventional road dust collectors have two rotating brushes attached to the bottom of the vehicle body, and a belt conveyor or suction device between them. The most common structure is to attach a rotary brush and rotate the brush inward to scrape off sand grains from the road surface while collecting them with a belt conveyor or suction device.

In this case, since the road surface is swept with a rotating brush, a water truck is led to wet the curb side in advance to prevent dust from flying up.

For this reason, the amount of water to be sprinkled was large, the dust collector truck and the water sprinkler truck had to be operated at the same time, and two or more workers were required.

In addition, since water is sprinkled, fine sand and mud are washed away to the roadside, and large-sized sand cannot be swept away, and furthermore, the rotating brushes embed fine sand and mud in the uneven surface of the road. This resulted in drawbacks such as the roads becoming smooth.

(Problems to be Solved by the Invention) The present invention eliminates the drawbacks of the conventional rotating brush type, uses extremely little water, and can work with one machine without requiring the guidance of a water sprinkler truck, reducing work costs. A hydraulic dust collector that is inexpensive, has high dust collection efficiency by reliably collecting everything from small to large sand particles, and also has an excellent road cleaning effect by removing oil on the road surface and embedded sand particles. It provides:

(Means for Solving the Problems) The present invention has a main nozzle installed at an inclination angle of 7 to 13 degrees with respect to the road surface, and a main nozzle installed on both sides of the main nozzle that is inclined with respect to the road surface. The left and right sub-nozzles are inclined at an angle of 7 to 13 degrees and are installed facing inward at approximately equal angles to the main nozzle side. a rising guide plate inclined with respect to the rising guide plate, a collection box for mixed water disposed at a distance in front of the rising guide plate, a separation and recovery water tank communicating with the collection box, and this separation and recovery water tank and the above-mentioned It is characterized by comprising a pump that is provided between the nozzle and the water tank and supplies water from the water tank to the nozzle.

(Function) The hydraulic dust collector of the present invention has a main nozzle close to the road surface, and left and right sub nozzles on both sides of the main nozzle,
Each of the nozzles is inclined with respect to the road surface, and the sub nozzle is installed inward at approximately the same angle as the main nozzle side. When the water in the separation and recovery tank is supplied to each of these nozzles with a pump and the water is injected from the nozzles toward the road surface, the sand grains and mud scattered on the road surface are washed away by the injected water, and this mixed water is brought together at the confluence point. The water becomes a straight stream, and the energy ejected from the left and right directions escapes upward due to the collision, exerting an upward force on the mixed water. This mixed water having a rising force rises by a rising guide plate provided in front, becomes a single stream of water, and is collected in a collection box provided in front of it. This collection box is equipped with a pump, and the pump guides the mixed water to the separation and collection tank, where the water is separated from sand grains and mud, and the pump again supplies water to the nozzle side to collect and recycle the water. This system collects dust from the road surface using hydraulic power.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 8.

In the figure, 1 is a truck, and a separation and recovery water tank 2 and a self-priming turbine pump 3 are attached to the loading platform of the truck 1. The water suction side of the turbine pump 3 communicates with the water storage tank 4 of the separation and recovery water tank 2. There is.

Reference numeral 5 denotes a flexible frame, which is formed to be freely bendable by means of a spring 6 and a hinge, and is configured such that the nozzle support frame 7 attached to the tip thereof is urged by the spring 6 toward the curb 9 side of the road 8.

Casters 10 are attached to the lower part of the nozzle support frame 7, and the nozzle support frame 7 is configured to run close to a road surface 11. A main nozzle 12 is attached to the nozzle support frame 7 in a direction opposite to the traveling direction of the vehicle body, and sub nozzles 13, 13 are attached on both left and right sides of the main nozzle 12 facing inward toward the main nozzle 12.

As shown in FIG. 4, the main nozzle 12 and the sub nozzles 13, 13 are installed at an inclination angle θ of 7 to 13 degrees with respect to the road surface 11.

Also, the plane mounting angle δ of the left and right sub nozzles 13, 13
is installed facing inward on the main nozzle 12 side so that δ is 30 to 60 degrees, as shown in FIG. It's becoming like that.

By specifying the inclination angle θ and the flat mounting angle δ within the above ranges, the water jet 14 from each nozzle can be reduced.
This is because the width of the flow path at the confluence point C of... is minimized, and the mixed water 15 combined with the sand grains rises accordingly, resulting in a large upward force.

As for the tip shapes of the main nozzle 12 and the sub nozzle 13, as shown in Fig. 6, it is most preferable to have a horizontally oblong rectangular shape, since this has a small diffusion width, ejects a long and focused jet in the nozzle direction, and has excellent directivity. However, the shape is not limited to these, and other shapes such as a circular shape or a cross shape as shown in FIG. 7 may be used.

In addition, the end of the horizontal arm 16 attached to the nozzle support frame 7 on the road surface center side is connected to the main nozzle 12.
An auxiliary nozzle 17a arranged toward the side is attached.

Further, on the curb side of the horizontal arm 16, there is an auxiliary nozzle 17b arranged with the tip facing the truck 1 side,
An auxiliary nozzle 17c with a tip facing downward is attached to each of the nozzles. Further, a vertical arm 18 is rotatably attached to the curb side of the horizontal arm 16, and guide rollers 19, 19 provided here are always attached to the curb 9.
It is designed to slide on the side of the

Further, 20 is a rising guide plate 20 provided in front of the confluence point C, and the base end side of this plate is the nozzle support frame 7.
It is rotatably supported. This ascending guide plate 2
0 is an aluminum plate formed into a U-shape, the lower end of which always slides on the road surface 11, the upward inclination angle Ψ is set so that Ψ is 40 to 50 degrees, and the side wall 2
The widths of 0a and 20a are narrowly formed to 6 to 10 cm.

Reference numeral 21 denotes a collecting box for the mixed water 15, which is provided at a distance in front of the ascending guide plate 20, and is box-shaped with an open top, and a jet pump 22 is installed inside the box. The nozzle 22a of this jet pump 22 is connected to the turbine pump 3 attached to the truck 1.
The water inlet 22b is connected to the discharge side of the hose 23 via the hose 23, and is opposite to the nozzle 22a.
3 to the sedimentation separation tank 24 of the separation and recovery tank 2.

Further, a caster 10 is attached to the lower part of the collection box 21, and is connected to the truck 1 with a traction stay 25, so that the collection box 21 can be towed by the truck 1 while maintaining a distance from the ascending guide plate 20. .

Reference numeral 26 denotes a flow branch pipe attached to the discharge side of the turbine pump 3. The large diameter mounting port 26a is connected to the nozzle 22a side of the jet pump 22 with a hose 23, and the six small diameter mounting ports 22b are connected to the hose 23.
It is connected to the main nozzle 12, sub nozzles 13, 13, and auxiliary nozzles 17a, 17b, 17c via.

Next, the operation of the dust collector having the above configuration will be explained.

Water is filled in a separation and recovery water tank 2 in advance, and the truck 1 is run along the curb 9 side of the road 8 to be cleaned. At this time, the nozzle support frame 7 is always pressed against the curb 8 side by the flexible frame 5, and the guide roller 19 of the vertical arm 18 runs while slidingly contacting the side surface of the curb 9.

Since many sand grains and mud are scattered on the curb 9 side of the road surface 11, when the self-priming turbine pump 3 is operated while the truck 1 is running in this condition, the water in the water tank 4 is pumped by the turbine pump 3. High-pressure water is sucked up, passes through a branch pipe 26, and is supplied to each nozzle with a hose 23.

In this case, as shown in FIG.
As a result, the sand grains 27 scattered on the center side of the road surface 11 are brought closer to the flexible frame 5 side. Additionally, an auxiliary nozzle 17C is arranged downward along the side of the curb 9.
Then, the sand grains 27 scattered near the curb 9 are brought to the side of the flexible frame 5 by the auxiliary nozzles 17b arranged inward, and the auxiliary nozzles 1 on the left and right sides
The sand grains 27 are gathered together in a band shape with an interval width of 3,13.

After that, when the main nozzle 12 and the sub nozzles 13, 13 pass over the sand grains 27, the sub nozzles 13, 13
As shown in FIGS. 4 and 4, the jetted water 14, 14 becomes a wall jet from the contact point A with the road surface 11, sweeps away the sand grains 27 over the road surface 11, and at the confluence point C in front of this, The two water jets 14 collide, and the collision energy tries to escape upward, causing the water to bulge, and the jet water 14 from the main nozzle 12 creates mixed water 15 mixed with sand grains 27 at the confluence point C.
The water is pushed forward and becomes a narrow stream of water that is guided to the ascending guide plate 20.

In this case, if the inclination angle of the main nozzle 12 and the left and right sub nozzles 13, 13 is not inclined by 7 to 13 degrees with respect to the road surface 11, the jetted water 14 will not reach the road surface 11.
This is because the amount of water that bounces off at the contact point A and flows toward the left, right, and rearward increases, resulting in poor water recovery efficiency and insufficient formation of a wall jet that sweeps the sand grains 27 forward along the road surface 11. be.

Furthermore, unless the sub nozzles 13, 13 are installed facing inward to cause the jet water 14, 14 forming a wall jet to collide with each other, the jet water 14 will spread laterally and cannot be focused, and the force that lifts the sand grains 27 will be does not work, and the water recovery efficiency and the sand grain 27 collection efficiency deteriorate.

The mixed water 15 guided by the rising guide plate 20 rises as a single water stream, flies in a parabolic shape from the upper end, and flows into the collection box 21.

A jet pump 22 is attached to the collection box 21, and the mixed water 15 is injected from a nozzle 22a, and mixed water 15 is sucked into a water intake port 22b, rises in a hose 23, and flows into a settling tank 24 of a separation and recovery water tank 2. .

Here, the sand grains 27 settle and the water passes through the filter 28.
It flows into the adjacent water storage tank 4 through. The water thus recovered is again supplied to the nozzle side by the turbine pump 3, and the sand grains 27 on the road surface 11 are successively collected by hydraulic power.

Therefore, according to the dust collector of the present invention, since the jet water 14 for collecting the sand grains 27 is recovered and reused, the water recovery efficiency is about 85%, and moreover, it does not require the use of a water sprinkler truck as in the conventional case. It can work independently without the need for guidance, and the cost is low. Further, the only mechanical drive mechanism is the turbine pump 3, and the structure of the dust collection mechanism is simple and can be manufactured at low cost.

In addition, by providing the auxiliary nozzles 17a, 17b, and 17c, the sand grains 27 scattered over a wide area can be collected, and the main nozzle 12 and the left and right sub nozzles 1
By the combination of 3 and 13, the sand grains 27 are focused and given a lifting force, and even large grains of about 8 meshes can be efficiently collected in the collection box 21. In addition, since high-pressure water is injected, it is possible to reliably remove the fine sand grains 27 that are stuck in the uneven parts of the road surface 11. When the work was carried out on a test vehicle, the asphalt surface was exposed and glowed black, and moreover, the asphalt surface inside the sedimentation separation tank 24 was removed. A large amount of oil was floating on the water surface, and the removal effect of the oil adhering to the road surface 11 was great, and a remarkable effect on the driving safety of the automobile was recognized.

Furthermore, the sand grains 27 deposited in the sedimentation separation tank 24 are washed with high-pressure water and become shiny, and if separated through a sieve, they can be reused as construction sand.

FIG. 9 shows another embodiment of the present invention, in which a rotary drive unit 29 and an air cylinder 30 are installed under the body of the truck 1, a pipe 31 connected to a hose 23 is installed under this, and the tip of the pipe 31 is connected to a hose 23. main nozzle 1
2 is installed. Further, sub nozzles 13 are similarly attached to the left and right sides of the main nozzle 12 so as to be rotatable and movable up and down.

A rising guide plate 20 is also attached in the same manner, and the height and angle of the nozzle can be adjusted by a control device (not shown). Furthermore, collection box 2
1 is fixed under the vehicle body and communicates with a turbine pump 3.

In this structure, since the dust collector is disposed below the vehicle body, the device can be made smaller.

In the above embodiment, one sub nozzle on each side is arranged, but a plurality of sub nozzles may be arranged on both sides.

Further, when collecting dust in a narrow width, it is not necessary to attach an auxiliary nozzle, and the dust collector may not be attached to a truck but may be attached to another self-propelled mechanism.

Further, the separation and recovery water tank may not be divided into a water storage layer and a sedimentation separation layer, but a cage-shaped filter may be attached to the suction side of the turbine pump.

Furthermore, although the above-mentioned embodiment shows the case where dust is collected from roads, it can also be applied to dust collection from factories, the bottom of waterways, and the like.

(Effects of the Invention) As explained above, according to the hydraulic dust collector according to the present invention, the amount of water used is extremely small, the structure is simple and inexpensive, and there is no need for a water truck to lead the way as in the past. Work costs are low. Furthermore, the present invention has remarkable effects such as being able to reliably collect everything from fine mud to large sand grains, being highly efficient, and having an excellent cleaning effect by removing road surface oil and embedded sand grains.

[Brief explanation of the drawing]

1 to 8 show one embodiment of the present invention, in which FIG. 1 is a perspective view showing the main parts of a hydraulic dust collector, FIG. 2 is a plan view thereof, and FIG. Figure 4 is a longitudinal side view explaining the dust collection action, Figure 5 is a plan view explaining the dust collection action, Figures 6 and 7 are front views of the nozzle, and Figure 8 is the dust collection action. FIG. 9 is a plan view showing the dust effect, and FIG. 9 is a side view of essential parts of an apparatus according to another embodiment of the present invention. 1... Truck, 2... Separation and collection tank, 3...
Turbine pump, 4... Water tank, 5... Flexible frame, 7... Nozzle support frame, 9... Curb,
11... Road surface, 12... Main nozzle, 13... Sub-nozzle, 14... Jet water, 15... Mixed water, 17
a, 17b, 17c...auxiliary nozzle, 20...rising guide plate, 21...collection box, 22...jet pump.

Claims (1)

[Claims] 1. A main nozzle installed with an inclination angle of 7 to 13 degrees with respect to the road surface, and a main nozzle installed on both sides of this main nozzle with an inclination angle of 7 to 13 degrees with respect to the road surface. death,
In addition, left and right sub nozzles are installed facing inward at approximately equal angles to each other on the main nozzle side, and a rising guide plate is arranged forward of the confluence of the jet water jetted from each nozzle and is inclined with respect to the road surface. , a collection box for mixed water disposed at a distance in front of the ascending guide plate, a separation and collection water tank communicating with the collection box, and a water tank provided between the separation and collection water tank and the nozzle. and a pump that supplies water to a nozzle. 2. The hydraulic dust collector according to claim 1, wherein the plane mounting angle of the left and right sub-nozzles is 30 to 60 degrees with respect to the mounting direction of the main nozzle.