JP3889273B2 - Suction collection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for sucking and collecting foreign matter such as earth and sand or dust clogged in a void of drainage pavement as sludge water together with water.
[0002]
[Prior art]
First, the drainage pavement will be described with reference to FIG. 3. The drainage pavement a is formed by sequentially laying a surface layer f having a roadbed c, a base layer d, and a gap e capable of passing water on a roadbed b. The pavement has a function of reducing factors that hinder driving safety such as a smoking phenomenon and a hydroplaning phenomenon, by draining rainwater that has flowed into the gap e of the surface layer f during raining to a side groove (not shown).
[0003]
Moreover, since the space | gap e of the surface layer f has a sound absorption capability, it also has the function to reduce the noise of the tire at the time of vehicle travel. The base layer d portion of the drainage pavement is not water-permeable for protecting the roadbed c.
By the way, in such drainage pavement a, earth and sand, dust and the like are clogged in the gap e of the surface layer f due to the influence of traveling of the vehicle, wind, and the like, and the above-described excellent functions are deteriorated in a relatively short period of time. .
[0004]
For this reason, conventionally, as shown in FIG. 4, the pressure water is sprayed from the spray nozzle 1 or the like of the cleaning device toward the pavement surface h, and the foreign matter clogged in the gap e of the pavement a by the pressure of the pressure water. As a result, the mixed sludge water of the foreign matter and water released is sucked and collected by a suction collecting device, and the surface layer f of the pavement is washed to recover the function of the drainage pavement.
The suction recovery device includes a suction pipe 2 that sucks sludge water, and a receiver tank 3 that collects the sludge water sucked by the suction pipe 2 and performs a steam-water separation process. Is sucked through the blower 4 and released to the outside air, whereby a suction force is applied to the suction pipe 2 and a steam-water separation process is performed in the receiver tank 3.
[0005]
The sludge water in the receiver tank 3 after separation of the steam and water is sent to the precipitation filtration tank 9 through the pipe 8 provided with the three-way cock 5, the reclaimed water pump 6, the three-way cock 7, etc., and sent to the precipitation filtration tank 9. The relatively heavy foreign matter in the sludge water collected at the bottom is discharged, and the sludge water in which the relatively light foreign matter floats is pushed out through the filtration filter 10 and sent to the fresh water tank 12 through the pipe 11 as reclaimed water. The
Then, the reclaimed water sent to the fresh water tank 12 passes through the suction filter 13 and then is guided to the injection nozzle 1 through the pipe 15 in which the high-pressure water pump 14 is interposed, whereby the pressure injected from the injection nozzle 1 Reused as water.
[0006]
In FIG. 4, reference numeral 16 denotes a secondary catcher that is interposed in a pipe 18 on the upstream side of the blower 4 to protect the blower 4 and removes foreign matters in the conveying air, and 17 is a muffler for silencing.
[0007]
[Problems to be solved by the invention]
However, in the above conventional suction recovery device, the sludge water on the road surface is suctioned and recovered via the single suction pipe 2, so that the sludge water recovery efficiency is poor and hinders shortening of the cleaning work time. Further, there is a limit to the suction force, and further improvement of the suction force is desired.
The present invention has been made in order to eliminate such inconvenience, and is capable of significantly increasing the efficiency of collecting sludge water from the road surface and improving the suction force of the suction pipe. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a suction recovery device that sucks and collects foreign matter on the road surface as sludge water together with water,
The first suction pipe for sucking the sludge water, the second suction pipe for vacuum suction of the sludge water, the first suction pipe is connected, and the tip of the second suction pipe serves as a pumping means. A first air / water separator inserted inside through a suction device for sucking the air in the first air / water separator to the outside,
The tip of the second suction pipe is arranged in a negative pressure region formed in the first steam separator by suction of the suction device.
[0009]
According to a second aspect of the present invention, in the first aspect, a short tube portion is disposed in the first air / water separator, the suction device is connected to the short tube portion, and the tip of the second suction pipe Is inserted into the short tube portion and protruded from the short tube portion.
The invention according to claim 3 is characterized in that, in claim 1 or 2, a second steam-water separator is interposed upstream of the pumping means of the first suction pipe.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view for explaining a clogging clogging removal device provided with a suction recovery device as an example of an embodiment of the present invention, and FIG. 2 is an enlarged view of a second filtration device. In this embodiment, the drainage pavement is taken as an example on the road surface, and the structure of the drainage pavement is the same as that described in the conventional example (see FIG. 3), so the same reference numerals as in the conventional example are attached. To explain.
[0011]
With reference to FIG. 1, a clogging clogging removing device 100 having a suction recovery device according to the present invention will be described.
The removing device 100 is roughly divided into a cleaning device 200 that sprays high-pressure water toward the pavement surface h and releases foreign matter clogged in the gap e of the pavement a by the high-pressure water spray pressure, and the released foreign matter and water. Suction and recovery device 300 that performs suction and recovery of the mixed sludge water and performs air-water separation processing, first and second filtration devices 400 and 500 that filter the sludge water after separation of the air and water, and first and second And a fresh water tank 600 for storing reclaimed water filtered by the filtering devices 400 and 500.
[0012]
The cleaning device 200 is attached to a towing vehicle such as a truck via a movable arm, and the suction recovery device 300, the first and second filtration devices 400 and 500, and the fresh water tank 600 are mounted on the vehicle. And the water in the fresh water tank 600 is guide | induced to the said washing | cleaning apparatus 100, and it is made to reuse as the said high pressure water.
Further, the cleaning device 200 includes four traveling rolls 201 to 204 arranged in front and rear in the traveling direction of the vehicle, and the two traveling rolls 202 and 203 at the center are covered with a cover 205 to store the liquid. A possible liquid reservoir 206 is formed.
[0013]
Injection nozzles 207 and 208 for injecting high-pressure water obliquely toward the pavement surface h are attached in the vicinity of the front and rear traveling rolls 201 and 204, respectively, and the cover 205 has an inside of the liquid storage unit 206 toward the pavement surface h. An injection nozzle 209 for generating high-pressure water in the liquid and generating cavitation is attached.
The suction recovery device 300 includes a first suction pipe 301 that sucks sludge water of foreign matter and water released in the gap of the pavement by blowing high-pressure water by the cleaning device 200, and a second suction suction of the sludge water. And a suction tube 302.
[0014]
One end of the first suction pipe 301 is connected to the upper surface of the cover 205 of the cleaning device 200, and one end of the second suction pipe 302 passes through the cover 205 and is inserted between the traveling rolls 202 and 203 in an airtight manner. .
On the other hand, the other end of the first suction pipe 301 is connected to the outer periphery of the upper end of the first steam separator 303 from which the sludge water is collected, and the other end of the second suction pipe 302 is used to collect the sludge water. The second steam / water separator 304 and the first steam / water separator 303 are inserted into the first steam / water separator 303 via an ejector (pressure feeding means) 305 disposed above the first steam / water separator 303.
[0015]
A short cylindrical portion 306 is disposed substantially concentrically at an upper position inside the first air / water separator 303, and the other end of the second suction pipe 302 is connected to the short cylindrical portion 306. It is inserted and arranged in a state of projecting downward from.
In addition, an intake pipe 308 of a blower (suction device) 307 is connected to the short cylinder portion 306 through the first air / water separator 303.
By driving the blower 307, the air in the first air / water separator 303 is sucked through the intake pipe 308 and released to the outside air, whereby a suction force is applied to the first suction pipe 301, and the sludge Water is collected and air / water separation in the first air / water separator 303 is performed.
[0016]
Note that a Y-type strainer 309 is installed on the upstream side of the blower 307 in the intake pipe 308 to protect the blower 307 by removing foreign matters in the carrier air, and a muffler 310 for noise reduction is attached on the downstream side. ing.
Further, the water in the fresh water tank 600 is supplied to the ejector 305 as pressure water from the pipe 313 through the suction filter 312 by the driving of the pump 311, whereby the vacuum suction is performed to the second suction pipe 302. A force is applied, and the sludge water is collected and the air / water is separated in the second air / water separator 304.
[0017]
At this time, since the distal end of the second suction pipe 302 is inserted into the short cylindrical portion 306 and protruded from the short cylindrical portion 306, the distal end is positioned on the intake line of the blower 307 so as to have a negative pressure. Will be placed in the region.
As a result, the differential pressure between the outside air and the tip of the second intake pipe 302 is increased, and the blowing speed from the tip of the second intake pipe 302 is increased. As a result, the degree of vacuum of the ejector 305, in other words, The vacuum suction force of the second suction tube 302 can be further increased.
[0018]
Then, the sludge water collected at the bottom of the first air / water separator 303 is sent to the first filtration device 400 via the delivery pipe 314 by the blowing pressure from the tip of the second intake pipe 302, and the first The sludge water collected at the bottom of the second steam separator 304 is sent to the first filtration device 400 via the feed pipe 316 by the pumping force of the ejector 315 attached to the bottom of the second steam separator 304. Is done.
The ejector 315 is supplied with pressure water for conveyance from a pipe 313 a branched from the pipe 313.
[0019]
The first filtration device 400 is a cyclone type filtration device having a tapered cylindrical shape with a gradually reduced diameter at the lower part, and the delivery pipes 314 and 316 are connected to the upper part. The delivery pipes 314 and 316 are both arranged with their outlets in the circumferential direction and facing the same direction.
As a result, a rotating flow of sludge water is generated in the first filtration device 400 to cause centrifugal force to act on the foreign matter of the sludge water, and relatively heavy foreign matter in the sludge water is removed from the first filtration device by the centrifugal force. The sludge water that falls to the bottom after being driven to the inner wall side of 400 and floats relatively light foreign matter passes a cylindrical filtration filter 401 (for example, a wire mesh) disposed at the upper center in the first filtration device 400. Filtered through.
[0020]
The burden on the filtration filter 401 can be reduced by causing relatively heavy foreign matter in the sludge water to fall to the bottom by following the inner wall side of the first filtration device 400 by centrifugal force.
The reclaimed water after filtration is pushed out from the upper outlet 402 of the filtration filter 401 and supplied to the fresh water tank 600 through the pipe 403.
Further, a water supply pipe 404 is inserted and disposed inside the filtration filter 401, and a plurality of backwashing injection nozzles 405 are attached to the water supply pipe 404.
[0021]
The water in the fresh water tank 600 is supplied to the water supply pipe 404 as pressure water from the pipe 408 through the suction filter 407 by the driving of the pump 406, whereby the filtration filter 401 is supplied from the backwashing injection nozzle 405. The pressure filter is sprayed toward the inner peripheral surface of the filter to clean the filtration filter 401.
Further, a pressure sensor 409 for detecting the internal pressure is attached to the upper portion of the first filtration device 400, and when the detected value of the pressure sensor 409 reaches a predetermined value, a control (not shown) is performed. The apparatus determines that the filtration filter 401 is clogged and controls the opening / closing valve 410 provided in the pipe 408 to open, whereby the injection of pressure water from the backwashing injection nozzle 405 is started. Yes. Thereby, the water in the fresh water tank 600 is saved.
[0022]
Since the injection of pressure water from the backwashing injection nozzle 405 is performed in water, the filtration filter 401 is washed by the impact force of the cavitation by adjusting the injection pressure of the pressure water to generate cavitation. It can be made more effective.
Then, the water containing foreign matter accumulated at the bottom of the first filtration device 400 is transferred to the second filtration device 500 via the delivery pipe 412 by the pumping force of the ejector 411 attached to the bottom of the first filtration device 400. Sent out.
[0023]
The ejector 411 is supplied with pressure water for conveyance from a pipe 415 a branched from the upstream side of the on-off valve 410 of the pipe 408.
In this embodiment, an on-off valve (not shown) is controlled by, for example, a timer so that water containing foreign matter accumulated at the bottom of the first filtration device 400 is not excessively sent to the second filtration device 500. Transmission is performed intermittently.
As shown in FIG. 2, the second filtration device 500 has an upper surface of a cylindrical filtration filter 501 in which water is accommodated therein and is arranged with the axis line oriented in the horizontal direction from the water surface. The filter 501 is rotationally driven by a driving device (not shown).
[0024]
Sludge water containing foreign matter sent from the delivery pipe 412 falls through the hopper 502 on the upper side surface of the filter 501, and the sludge water dropped on the upper side surface of the filter 501 is filtered by the filter 501. The foreign matter adhered to the outer peripheral surface of the filtration filter 501 is scraped off by the edge 504 of the scraping plate 503 and falls into the discharge box 505 as a dehydrated cake and collected.
[0025]
On the other hand, the reclaimed water filtered by the filtration filter 501 is sent to the fresh water tank 600 through a delivery pipe 506 a connected to the end of the filtration filter 501 by the pressure feeding force of an ejector 506 disposed above the fresh water tank 600.
The ejector 506 is supplied with pressure water for conveyance from a pipe 415 b branched from the pipe 408.
Further, a water supply pipe is inserted into the filter 501 and a plurality of backwashing injection nozzles 507 are attached to the water supply pipe.
[0026]
The backwashing injection nozzle 507 cleans the filtration filter 501 by injecting pressure water toward the inner peripheral surface of the filtration filter 501 before the sludge water drops from the hopper 502 in the filtration filter 501. The water supply pipe is supplied with pressure water from a pipe 415 c branched from the pipe 408.
Then, the water filtered by the first and second filtration devices 400 and 500 and returned to the fresh water tank 600 is supplied to the injection nozzles 207 and 208 from the pipe 603 through the suction filter 602 by driving the pump 601, and is supplied with high-pressure water. And is supplied to the injection nozzle 209 from the pipe 606 through the suction filter 605 by driving the pump 604 and reused as high-pressure water.
[0027]
A float sensor 508 for detecting the water level is disposed in the second filtration device 500. When the float sensor 508 detects that the liquid level has exceeded a predetermined level, the float sensor 508 is interposed in the delivery pipe 412. The on-off valve 509 is controlled to be closed, and the supply of sludge water to the hopper 502 is temporarily stopped, so that an abnormal rise in the liquid level is prevented.
Further, the water in the second filtration device 500 is circulated and supplied to the hopper 502 through the pipe 511 by driving the pump 510 every predetermined time, for example, and subjected to a filtration process by the filtration filter 501.
[0028]
As is apparent from the above description, in this embodiment, sludge water on the road surface is sucked and collected through the two suction pipes 301 and 302, and the vacuum suction force of the second suction pipe 302 is obtained. Therefore, the recovery efficiency of sludge water from the road surface can be greatly increased and the function recovery capability is greatly improved.
Note that the configuration of the suction recovery apparatus 300 of the present invention is not limited to the above embodiment, and can be changed as appropriate without departing from the gist of the present invention.
[0029]
For example, in the above-described embodiment, the case where the second steam / water separator 304 is arranged to reduce the burden on the first steam / water separator 303 is taken as an example, but the second steam / water separator 304 is not necessarily limited. There is no need to place.
In the above embodiment, as the most preferable example, the tip of the second suction tube 302 is inserted into the short tube portion 306 and protruded from the short tube portion 306. As long as the tip of the cylinder is positioned on the suction line of the blower 307 and disposed in the negative pressure region, the short cylinder portion 306 is not necessarily provided.
[0030]
Furthermore, in the above embodiment, the case where the present invention is applied to drainage pavement is taken as an example. However, the present invention is not limited to this, and the present invention may be applied to permeable pavement and other pavements. Of course.
[0031]
【The invention's effect】
As apparent from the above description, according to the invention of claim 1, the efficiency of collecting sludge water from the road surface can be greatly increased, and the suction force of the second suction pipe can be improved. The effect is obtained.
According to the invention of claim 2, in addition to claim 1, the effect that the suction force of the second suction tube can be further improved is obtained.
In the invention of claim 3, in addition to the invention of claim 1 or 2, an effect that the burden of the first steam separator can be reduced is obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining a clogging clogging removal device provided with a suction recovery device as an example of an embodiment of the present invention.
FIG. 2 is an enlarged view of a second filtration device.
FIG. 3 is a schematic cross-sectional view for explaining drainage pavement.
FIG. 4 is an explanatory diagram for explaining a conventional suction recovery apparatus.
[Explanation of symbols]
300 ... Suction recovery device 301 ... First suction tube 302 ... Second suction tube 303 ... First air / water separator 304 ... Second air / water separator 305 ... Ejector (pressure feeding means)
306 ... Short tube portion 307 ... Blower (suction device)

Claims (3)

A suction recovery device that suctions and collects foreign matter on the road surface as sludge water together with water,
The first suction pipe for sucking the sludge water, the second suction pipe for vacuum suction of the sludge water, the first suction pipe is connected, and the tip of the second suction pipe serves as a pumping means. A first air / water separator inserted through the inside, and a suction device for sucking the air in the first air / water separator to the outside,
A suction recovery device, wherein the tip of the second suction pipe is disposed in a negative pressure region formed in the first steam-water separator by suction of the suction device. A short tube portion is disposed in the first air / water separator, the suction device is connected to the short tube portion, and the tip of the second suction pipe is inserted into the short tube portion and the short tube portion. The suction recovery apparatus according to claim 1, wherein the suction recovery apparatus is protruded from the nozzle. The suction recovery apparatus according to claim 1 or 2, wherein a second steam-water separator is interposed upstream of the pumping means of the first suction pipe.

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