CN101137793B - Dust control system - Google Patents

Dust control system Download PDF

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Publication number
CN101137793B
CN101137793B CN2005800465949A CN200580046594A CN101137793B CN 101137793 B CN101137793 B CN 101137793B CN 2005800465949 A CN2005800465949 A CN 2005800465949A CN 200580046594 A CN200580046594 A CN 200580046594A CN 101137793 B CN101137793 B CN 101137793B
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CN
China
Prior art keywords
water
dust
hopper
road
suction pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2005800465949A
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Chinese (zh)
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CN101137793A (en
Inventor
艾伦·布赖森·利雅查
彼德·亚历山大·克拉伦斯·蒙诺克
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Tennant Co
Original Assignee
Applied Sweepers Ltd
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Filing date
Publication date
Priority to GB0426710.0 priority Critical
Priority to GBGB0426710.0A priority patent/GB0426710D0/en
Application filed by Applied Sweepers Ltd filed Critical Applied Sweepers Ltd
Priority to PCT/GB2005/004683 priority patent/WO2006061602A1/en
Publication of CN101137793A publication Critical patent/CN101137793A/en
Application granted granted Critical
Publication of CN101137793B publication Critical patent/CN101137793B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24Floor-sweeping machines, motor-driven
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4013Contaminants collecting devices, i.e. hoppers, tanks or the like
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4088Supply pumps; Spraying devices; Supply conduits
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608Cyclonic chamber constructions
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum

Abstract

A road cleaning or sweeping machine (10) fitted with a dust control system using a water atomiser (42, 60). The atomiser (42, 60) creates water particles of a similar size to dust, and by entraining atomised water through the road sweeping machine's dust handling systems, i.e. from the brushes (14), through a suction pipe (20) and into a hopper (16), dust control is established. A method of improving dust separation in a hopper (16) of a road sweeping machine (10) using a water atomiser to reduce dust or a spray to wet the walls of the hopper (16).

Description

Dust control system
Technical field
The present invention relates to a kind of dust control system, especially be equipped with the road of dust control system, or the road-cleaning machine.Term " road cleaning " and " road-cleaning " are widely used in the cleaning and the cleaning in other (other) zones such as pedestrian district (pedestrian precincts), sidewalk, parking lot.
Background technology
Thereby road is to make liftoff the flying up of dust enter the machine of hopper (hopper).The road-cleaning machine is to designed to be used the dust of cleaning on the road, make usually dust towards or the road that enters hopper.In many road-cleaning machines, dispose the suction pipe (or flexible pipe) that is used to suck the ground dirt that is cleaned, this suction pipe has that suction nozzle (ground followingsuction nozzle) is followed on ground and this suction pipe plays a pipeline, makes the dust of those suctions enter hopper by suction pipe.Yet road only comprises suction pipe and hopper, does not comprise clearing apparatus.
Hopper is installed in the back of road or road-cleaning machine usually.Conduit connects with the vacuum source (for example, blast fan) that suction is provided usually.Dirt can pass through vacuum source (for example, blast fan is designed to allow dirt and fragment to pass through), also can make a circulation to walk around vacuum source (for example, cleaning blast fan).
The brush of cleaning road forms (wire or the about 2mm of polymer fiber diameter that are used for small-sized road-cleaning machine, long by 10 to 15cm) by wire or hard polymer fiber usually.Often the brush of two reverse rotations surpasses two sometimes, and the axle rotation for around approximate vertical generally is installed on the road-cleaning machine.In machine with two reverse rotation brushes, form straight line in order to make dust along suction pipe, brush makes dust move towards the center line of road-cleaning machine.Therefore, the preceding ozzle of suction pipe is installed on the midline position of brush back usually.
As the result of cleaning action, the dust on the road can be moved one section sizable distance by brush.When road was dry, dust also will be dry usually.Therefore, unless the dust control of certain form is provided, the action that brush moves dust produces a large amount of airborne dusts through regular meeting.Therefore, this airborne dust is the first kind of dust that needs control.
In the road of suction pipe was arranged, dirt and dust pass pipe or pipeline has also moved one section sizable distance, enters in the hopper.This has also stirred dirt, thereby has produced airborne dust.Furthermore, hopper can be designed to make the rotation of dirt and air form whirlpool in hopper inside, adopts eddy current effect to come eliminating impurities and air.This also can evoke airborne dust in hopper.
Hopper is usually to the environment exhaust, to offset because the increase of the hopper internal pressure that suction air and dirt cause.Result as stirred up dirt in hopper and dust, hopper will be discharged dust by the ventilation opening that is provided with for this purpose inevitably, unless be provided for the dust control of certain form of suction pipe or hopper once more, therefore, the dust that hopper is discharged is another dust that needs control.
In order to control or to reduce this two kinds of dust sources,, provide the dust control of certain form usually at the road-cleaning machine of prior art:
1. as for the dust that is produced by brush, road-cleaning machine (or road-cleaning equipment) uses water sprinkler (water sprays) or watering device to suppress (knock down) or control dust usually before dust produces.For example, most scavenging machine manufacturer uses or installs water sprinkler or watering device in the brush front of machine.At first, the dirt of before brush contact dirt, getting wet, thereby the quantity of the airborne dust that produces when having reduced the cleaning dirt fully.Secondly, if brush produces some airborne dusts, water helps the airborne dust of getting wet, suppresses airborne dust.
2. the manufacturer of road-cleaning machine also is incorporated into water sprinkler in the suction pipe, and the water sprinkler in the suction pipe helps to reduce the quantity of the airborne dust that enters hopper, though produced dust by the air that stirs in the hopper in hopper.
3. the truck of cleaner has been installed, and for example large-scale road-cleaning machine also carries out dust control by watering.Especially, in the front of suction nozzle rather than in the watering of brush back, because large-scale machine provides enough (water storage) spaces for watering.Large-scale road-cleaning machine is also sprinkled water in the suction pipe between ozzle and hopper, as mentioned above, and in the front of brush with also may on brush, sprinkle water.
Yet in the road-cleaning machine of all these prior aries, the water sprinkler or the watering device that are used for dust control or dust inhibition use thick jet (coarse spray jets).These water sprinklers or watering device attempt to suppress (knock down) dust or get wet dirt so that the generation of dust minimize.Yet thick jet needs a large amount of water (in fact, water is The more the better).Yet the result is that the road-cleaning machine has to deliver a large amount of water.Further, the road-cleaning machine will be suffered extra cost, and these extra costs are because the road-cleaning machine need be designed to be able to handle or deliver a large amount of sucked back water to hopper.Therefore, need big and firm machine.Because machine weight increases, need more fuel to supply with machine power.Further, because dirt is got wet dirt water content height.Therefore, when the water that is used for dust control when useful load is occupied high percentage, the dust of collecting in hopper just accounts for low percentage (percentage that dust and water account for is opposite) in the per unit useful load.
It is inevitably that dust is gone out from hopper, in order to help to stop dust to be gone out from hopper, is generally the strainer that pore is installed some form, yet dust will be also more tiny than strainer usually, and therefore, this method is not in full force and effect.
Therefore, a kind ofly be used for road cleaning or the more effective or more high efficiency dust control system of road-cleaning machine is expected.
Summary of the invention
The invention provides a kind of road, this road comprises suction pipe, be used to collect the hopper of the dust that suction pipe absorbs, and dust control system.This dust control system comprises water atomizer(-iser), and this water atomizer(-iser) is arranged for the atomised spray of water droplet is assigned in the air of suction pipe front, atomised spray is brought into is inhaled in the interior air that is full of dust of suction pipe.
The present invention also provides a kind of method of improving eddy current type (cyclone-type) air/dirt separation system efficient in road, and the inwall that this method comprises the cyclone unit of getting wet (cyclone unit) clings water on the inwall with contaminants or dust.
Water atomizer(-iser) produces trickle atomized water, and is aspect the inhibition dust, more effective than the water sprinkler of prior art.
When particle water and dust granule approximately the same hour, perhaps more preferably, at least the same with dust granule little, in dust control system, dust " inhibition " is highly effective, to such an extent as to by the dust of brush generation or the dust of discharging from hopper for control, the dust on the road of getting wet recedes into the background for control.Water atomizer(-iser) has produced little particle water like this, yet water sprinkler in the road of prior art and watering device are found and are not like this.Briefly, the particle water of water sprinkler in the road-cleaning machine of prior art and watering device generation can not be controlled tiny airborne dust too greatly effectively.As a result, for the dust atomizer with dust control system use of the present invention reaches the control of same effectively dust, the water sprinkler of the road-cleaning machine of prior art and watering device need a large amount of water.
Preferably, the water droplet that atomizes in the water atomizer(-iser) comprises the water droplet of most of diameters less than 200 μ m, more preferably, less than the water droplet of 100 μ m and best, less than the water droplet of 40 μ m, also might be less than the water droplet of 20 μ m.Preferably, the average diameter of water droplet between 70 μ m and 40 μ m, best, the about 40 μ m of average diameter.Such water droplet swims in (as a cloudlet) in the air effectively.As a result, they are brought in the air-flow of suction pipe at an easy rate.Yet further, water droplet more easily distributes and spreads all in the air-flow, makes water droplet can better contact dust granule.Therefore, this has controlled the dust in the interior air-flow of suction pipe (or conduit), and can very control the dust in the hopper effectively.
Making water atomization also is a kind of effective using method of water.A spot of liquid water can produce a large amount of " cloud ".Therefore, the volume of water tank can remain to minimum, thereby can make on the machine the available spatial volume of dust hopper reach maximum.This maximum machine dust processing capacity-bigger hopper means can handle more dust.When do not have other make water the time because road can be installed very little water tank, road cleaning/cleaning/flushing device can be installed on the road, this advantage is great.
Preferably, the road for having the hopper that is designed to deliver 1000 liters of dusts will provide the dust control system of the water tank of about 200 liter capacities to road.Then, also can provide littler water tank, for example, about 150 liters or about 100 a liters water tank.Therefore, preferably, the volume of water tank approximately be hopper the rubbish volume 20%, perhaps 15%, even 10%.If two or more water tank are provided, top numeral is meant the volume sum of water tank.
Because (for example, empty beverage can or bottle) mass density is low, about 500kg when the hopper of typical 1000 liter capacities is filled for the general fragment of collecting.With regard to the water tank of 200 preferable liter capacities, the biggest quality of water is approximately 200kg in the water tank.If all atomized waters all are inhaled in the hopper, the water of these volumes (weight) can not make the hopper overload yet.In order to ensure the safety of this situation, conveniently, water tank with kg be the capacity of the unit volume of the unit of being upgraded to (for example with) be no more than hopper with kg be unit the weight capacity 40%.
Preferably, road is a kind of road-cleaning machine.Preferably, the brush of two reverse rotations is installed, also more brush can be installed in the front of road-cleaning machine.Each brush or road-cleaning machine can be installed conventional water sprinkler and watering device usually, and this water sprinkler and watering device are used to the dirt of brush front of getting wet.These dust control systems also comprise water atomizer(-iser).
Preferably, hopper is installed in the back of road-cleaning machine.
Preferably, suction pipe is in the permanent position of machine.
Preferably, atomizer is installed in the top or front of suction nozzle inlet.Have been found that the air-flow that maximum dust control can enter into the ozzle inlet by the steam that makes atomizing obtains.Preferably, atomizer be installed in above the ozzle inlet and/or the 0.1m of front between the 0.3m.Atomizer not only can be worked effectively like this, and the another one benefit is exactly, and atomization plant can not be inhaled into fragment collision in the air-flow.This also incites somebody to action cleaning floor well, avoids contacting with ground material.The 3rd benefit is exactly that air-flow at this moment is slow relatively.Therefore, the cloud that is produced by atomizer will attracted in the dirt of air-flow before being inhaled into ozzle if having time.
Preferably, water atomizer(-iser) is manufactured into can reinstall (retro-fitted) on existing road cleaning or sweeping machine, preferably, is installed between the brush and suction pipe of road-cleaning machine, perhaps is installed in the outlet of suction pipe, for example in hopper.
Preferably, atomizer suitably is positioned at the front of any effective airflow constrictions (significant airflowconstriction), and for example, in the low speed flow environment of suction pipe outside, proper distance may be 10cm or bigger.Yet most road-cleaning machine does not have such airflow constrictions, except suction pipe or blast fan.Such metric space is penetrated in the dirt through the air-flow of cloud for cloud provides enough time of staying.
As everyone knows, if cloud is pushed by a narrow mouth, cloud will be easy to be condensed into once more thick water droplet.Yet, the dirt in case water droplet has been got wet, such situation is just few, and therefore being positioned at the compressor front and being to the cloud dirt of getting wet provides the time.Further, by the atomizer of configuration suction pipe front, the cloud of water is violent in ozzle, thereby when dirt was rolled from (lift off) ground or by brush by the suction pipe suction, the cloud of water and dirt can mix better.
Atomizer may be positioned on the limit of ozzle.Yet, be that better because may not more effectively mix with dust from the limit, and when machine moved ahead, atomizer may collide ground object above.
Preferably, atomizer is positioned at the front of ozzle and the place of contiguous brush, and preferably, and the outside physically that is not positioned at dirt passage (path) is damaged avoiding.As a result, the dust of being kicked up by brush also comprises vaporific air (misted air) or is controlled (for example, atomized spray (atomised spray)) by vaporific air.Further, by fixing atomizer there, the mixture of airborne dust and atomized water will begin to enter suction system prior to dust.
In other one side, the invention provides and a kind ofly comprise suction pipe, be used to collect the hopper of the dust that suction pipe absorbs and comprise the dust control system of atomizing water ejector (atomising water spray) in the hopper that this atomized water ejector is used to control the dust in the hopper.
Preferably, water atomizer(-iser) comprises rotation clinkering shower nozzle (rotary sintered spray head).Such shower nozzle can produce trickle atomized water.Preferable atomizer is NewLand Design (RTM) rotary atomizer.It has an electric rotating machine (spinning motor) fast, and preferably, rotation (speed) reaches 20,000rpm.NewLand equipment is attractive, because it is with low-yield running, and insensitive to the cleannes of water, therefore minimum for the maintenance cost of the atomizer that damages.
The preferable water atomizer(-iser) of another one be the high pressure fine nozzle water jet (high pressure finenozzle, waterjet).
The diameter average of particulate is about 40 μ m in these systems.
Preferably, the water of supplying with atomizer in the water tank of road is a large amount of clean waters, and the water tank person of being operated of road fills.Yet water may be processed, for example, uses soap, antiseptic or cleaning agent.Preferably, carry out non-foam processing.
For atomizer, such processing generally will reduce the surface tension of water, the result, and atomizer will more be easy to generate littler water droplet.
Preferably, the size of particulate also is controllable, and this can realize by the variation of pressure or spinner velocity.For example, approximately be 20 in the speed of rotor, during 000rpm, the NewLand rotary atomizer produces diameter and is about the water droplet of 40 μ m, yet gathers way perhaps to 30, during 000rpm, has produced littler water droplet, produces bigger water droplet when reducing speed.This spinner velocity can be regulated by dial, perhaps operates control by the operator in the road-cleaning machine driver's cabin, perhaps can be controlled automatically by machine.This adjustable is useful, and reason is as follows:
As everyone knows, having under the environment of wind, atomized water will be dispelled.Yet, in view of very tiny particle more by the quantity that dispelled in wind, the negligible amounts that big slightly particle is dispelled.By regulating the speed of rotor, for example, can change the size of water droplet.Therefore, if environment has wind, the size that the operator can regulate particulate is bigger, perhaps when environment facies when static, the size of regulating particulate is littler.For machine can be regulated automatically, can go up the wind sensor (wind sensor) that a measuring wind degree is installed at car (vehicle).Perhaps, make machine be adapted to otherwise judge the quantity of the atomized water that is dispelled, and correspondingly automatically regulate drop size.
In order to control the dust in the hopper, atomizer is positioned at hopper, perhaps in the entrance of hopper, preferably, and in the outlet of suction pipe, perhaps other places in the hopper.
In order to control the dust that produces when cleaning is moved, atomizer can be positioned in farther place, brush front.
In a position or any position, a more than atomizer can be installed, therefore, allow atomizer to be placed on more place, and/or increase the density of any one place cloud.
Road cleaning or road-cleaning machine can have conventional dust control system extraly, for example, and as known brush front or water sprinkler or the watering device in the suction pipe.These will help to control dust, for example, and in the place that dirt extremely tends to produce dust, such as on dust more or dirty place and road in drying.
Usually, dust control system is provided and makes water, accounts for and makes the percentage of water low owing to will be collected the water that leaves the road by suction pipe, so bigger water tank need be provided.Therefore, for the road-cleaning machine that 1000 liter capacity hoppers are arranged, need a volume the water tank between 150 to 400 liters (for example, the hopper volume 15% to 40% between).It is best that volume is approximately 200 liters water tank, promptly is about 20% of hopper volume.
Atomizer or each atomizer roughly be positioned at one or more brushes above.
Atomizer or each atomizer are roughly between two or more brushes.
Preferably, produce dust in order to suppress better or to control brush, the spray of atomizer or each atomizer is aiming or directed
Preferably, spray will suppress or control the dust that one or more following dust source produces: brush, the machine wheel, through the wind in any atmosphere of machine, the perhaps wind and hopper inner suction pipe or the air-swirl (with the dust of taking away) that produce of machine movement (with 10 miles speed drive machine per hour).
When atomizer is used for regeneration air sweeper (regenerative airsweepers) on these machines, atomizer also has advantage, for example, atomizer is used for this situation, be that the air that the part in the hopper is cleaned is sucked out hopper, be sent back to a big inlet head (suction head), then cross inlet head, take up fragment, sucked back then in hopper.
When not needing dust when control, preferably, it is convertible that the switch that dust control system is used to preserve water is set.Preferably, when machine did not clean or cleans, dust control system was closed automatically, for example, to or from the road in garage.
In preferable machine, machine comprises dust sensor, and dust control system is conditioned and is adapted to connect automatically according to the detected dust of sensor.Sensor can be in the back of brush, in suction pipe, and in hopper, or in the outlet of hopper pore.
Preferably, dust sensor is positioned at outlet or each outlet of hopper pore, and with convenient dust when hopper is discharged (perhaps when dust is discharged, sensed), dust control system just has been switched on.This equally also preserves water.This is very useful, because when the operator of road cleaning machine was using machine, pore was normally sightless for the operator.
Preferably, machine can be controlled automatically to atomizer, promptly use the computer or the electronic control system control atomizer of machine, this control can be cut off the water supply, for example, water remains in the suction system when stoping suction system not use by electromagnetic valve before the high-speed electric expreess locomotive of suction system stops, and the water that remains in suction system can damage rotor.
Preferably, the vacuum source that is used for suction pipe is powerful blast fan.Preferably, blast fan is a clean air fan.Preferably, can obtain clean air fan by blast fan being put into downstream end through the road air-flow.For example, just in time (just) exports the front of upstream at the machine ventilation opening, rather than uses a bypath system.By blast fan is placed in here, though the air that is inhaled into process blast fan, dirt will be separated from air there, preferably, and in hopper.Preferably, hopper relies on eddy current action (cyclone action) eliminating impurities and air, and more preferably, relies on two eddy current actions (dual cyclone action).First eddy current action is in the main body of hopper, and second eddy current action is in special use (dedicated) cyclone unit in farther place, hopper main body downstream (down stream).Powerful blast fan need drive this two eddy current.
Preferably, inhaled air and dirt enter in the hopper through suction pipe, and enter near side of hopper.Preferably, inhaled air and dirt are delivered in the hopper with a direction, rather than directly point to or common vertical center line towards hopper, preferably, in fact this direction is parallel to a side inner walls of hopper, perhaps being under the situation of vertical cylinder at hopper, is inside tangent line roughly.Preferably, flow into (inflow) and also do not want horizontal direction, more preferably, make progress slightly.By guiding air to flow into by this way, the air of a vertically-guided and the eddy current of dirt in hopper, have been caused.Like this, in the hopper main body, just caused eddy current effect (cyclone effect).
Preferably, the position that air in the suction pipe and dirt enter hopper still, produces the whirlpool effect of eddy current usually greatly about the middle and upper part of hopper front wall in the side of hopper.
Preferably, in order further to increase eddy current effect, hopper is surrounded by the insert of approximate vertical, swirl plate.
Preferably, thick water sprinkler (coarse water spray) is placed in the outlet or hopper of suction pipe, preferably, adopts the water sprayer.By spilling injection water there, water will trend towards the hopper sidewall of getting wet, at inner surface generation one deck water film of hopper wall.According to eddy current effect, the top of hopper also is like this.Enter dust in air and dirt by after the suction pipe, therefore collision hopper wall is further got wet by the water on the wall and top.Dust will become mud or mud, and assemble on wall, therefore be extract in air-flow.(resultant) mud or the mud that produce will flow down along inwall, or fall from inwall or top, thereby at the bottom treatment mud or the mud of hopper.
Of the present invention this is characterised in that the further effect that strengthens separation method, and produced than more fine and close (compacted) dust of dust in the conventional top center supply hopper (top-centre fed hopper) in the hopper bottom.In fact, have been found that this system of use, under the situation of normal road-cleaning, one 1000 liters hopper and 1600 liters of top center supply hoppers will be collected the dirt of same quantity.
For the wettability effect that makes inwall or top reaches maximization, thick water sprinkler also can be installed in other places of air-flow.
If thick water sprinkler is placed in the more place of upstream of better position, for example well-known in suction pipe, dirt will be assembled in the downstream of spraying, and cause obstruction before arriving hopper.This obstruction need be eliminated, and therefore, for thick water sprinkler, that position is not expected.Yet in hopper, such obstruction is not that the obstruction in problem-hopper can not take place, and removes unblock and causes owing to hopper is full.
The present invention also provides the equipment of reinstalling that is used to be installed on the road (retro-fitkit), comprise that the water atomizer(-iser) and the device that makes water fogging are installed to the erecting device (mountingmeans) on the machine, so that the atomized spray thing of water droplet is assigned in the air of machine suction pipe front, like this, water droplet is brought in the air that is full of dust that is inhaled into suction pipe.This equipment can also comprise arbitrary feature of the dust control system of road described above.
The present invention also provides the equipment of reinstalling (retro-fit kit) of road, comprises that the water atomizer(-iser) and the device that makes water fogging are installed to the erecting device in the machine hopper.
The present invention also provides the method for raising road vortex patern (cyclone-type) air/dirt separation system efficient, and this method comprises the method for installation system water atomizer(-iser) and the method that atomizing enters the water of air and dirt passage (path).Eddy current can form in the hopper main body, perhaps at hopper inner or fluidly (fluidly) be attached to formation in the cyclone unit on the hopper.Water can be in hopper inside or exterior atomization in passage, dust control system as described above.
Description of drawings
Now preferred embodiment of the present invention will be described, only by example, the following accompanying drawing of reference:
Fig. 1 is the diagrammatic elevation view of the road-cleaning machine consistent with the present invention.
Fig. 2 is the diagrammatic side view of road-cleaning machine among Fig. 1.
Fig. 3 is the diagrammatic top view of road-cleaning machine among Fig. 1.
The diagrammatic top view of the road-cleaning machine that Fig. 4 is has shown among the figure that water sprinkler ejector (waterspray jet) is applied to one deck thin water film on the inner surface of hopper wall.
The specific embodiment
The invention provides a kind of road or road-cleaning machine (10) that a kind of dust control system has been installed, this dust control system uses water atomizer(-iser) (42,60).Atomizer (42,60) be the dedicated unit that is used to produce with the water droplet of the similar size of dust, and by taking away the dust treatment system that atomized water enters the road sweeping machine, for example, atomized water enters into hopper (16) lining from brush (14) by suction pipe (20), and dust control is established.
Illustrated road-cleaning machine (10) comprises driver's cabin (12), two of four wheels (13)-demonstration, two reverse rotation brushes (14), hopper (16) (seeing Fig. 2 and Fig. 3) and suction pipe (20).Driver's cabin (12) is positioned at the front of machine (10).Be cleaning dirt built on stilts (18), two reverse rotation brushes (14) are positioned at the following of driver's cabin (12) and a little forward.Hopper (16) is used to collect the dirt and the fragment of built on stilts (18).Suction pipe (20) is driven (see figure 2) by blast fan (21), is used for that (18) pick up from ground with dirt, and (18) are sent to hopper (16) lining from ground with dirt.
Suction pipe (20) has suction nozzle (22), and (22) have skirt (rearmost skirt) (24) (see figure 2) backmost, limit skirt (side skirts) (26) and crown member (roof component) (28) (see figure 2).Skirt (24) backmost, limit skirt (26) and crown member (28) form the suction nozzle of a front opening and bottom opening, by this suction nozzle, dirt and dust can be drawn onto the suction pipe (20) from ground (18) at an easy rate, and the conduit that passes through suction pipe (20) then enters into hopper (16).The blast fan (21) that shows is a clean air blast fan (clean air fan) (21), dirt of collecting in the hopper (16) and fragment in the way that arrives hopper (16) without blast fan (21).Yet available dust blast fan (dirty fan) is replaced, and for example, arrives when dirt and fragment in the way of hopper (16) and will pass through the dust blast fan.
Blast fan (21) is positioned at the downstream of hopper (16), near the exhaust opening (40) of road-cleaning machine (10).Blast fan sucks air and the dirt through road-cleaning machine (10), and dirt is separated from air in by the way of hopper (16) with dust.Yet blast fan (21) provides final air blast (final blowing) in the hopper, and this air blast is discharged by exhaust opening (40).
Dirt and air are drawn onto in the suction pipe (20) by ozzle (22), and pass through suction pipe (20) then and enter into hopper (16).Dirt and air are discharged from suction pipe (20) through suction pipe outlet (30), and suction pipe outlet (30) is in hopper (16).Because outlet is roughly in a side of hopper front, and because the power of blast fan is big, thus, heavy solid (34) is separated from air and light fragment, so the air-flow of discharging from outlet (30) drives initial eddy current action in the main body of hopper (16).In order better light fragment to be separated from air, light fragment and air will finally pass through filter screen (36) then.Yet in order to isolate extra material from air, air and trickle particle matter will enter into second cyclone unit (38) then.
Water atomizer(-iser) (42) is positioned at the front of suction pipe (20), between two brushes (14).As a result, got wet through the dirt and the dust of hopper, this makes dust heavier.Therefore, eddy-current system is arranged effectively.The result, through the air after second cyclone unit will be very clean, therefore be discharged in the atmosphere via exhaust opening (40) through blast fan (21), yet, this air, perhaps part air, will be by the optionally recycling of hopper eddy-current system of blast fan (21) back, blast fan (21) provides a loop in the position of ozzle front for air, therefore, air in hopper (16), so just absorbs more dirt with sucked back.Yet these characteristics do not show in the drawings.
Filter screen (36) is positioned at the top of hopper (16), is used for separating some light materials from air.The effect of hopper door (44) is also played at the top.When emptying hopper (16), hopper (16) is rotated up the outside of machine (10) around hinge (46).Therefore, hopper door (40) is positioned at the tram that can effectively empty hopper (16).
As above-mentioned, water atomizer(-iser) (42) get wet dirt or dust particle.This not only makes two eddy current more effective, and as the reverse rotation brush with in the result of the motion of scavenging machine inner air, makes the generation minimum of airborne dust, because more dirt will be picked up with the form of piece.
Swirl plate (50) particularly in the corner of hopper, has been installed in inside in hopper (16).By the shuttling movement eddy current action initial that keeps air with minimizing the rotation enhancing.
As depicted in figs. 1 and 2, water atomizer(-iser) (42) is positioned at the front upper place of the crown member (28) of suction nozzle (22).The position of water atomizer(-iser) (42) in fact also is positioned between the brush (14).On this position, water atomizer(-iser) is by flexible pipe (30, do not show) supply water from the water tank (not shown), produce atomised cloud (52), this atomised cloud (52) is present between the brush and suction nozzle (22) the inside, and the atomised cloud of suction nozzle (22) the inside is because suction pipe (20) has absorbed the atomised cloud between the brush.
The size of the most of water droplets in atomised cloud (52) lining or diameter be less than about 200 μ m, preferably, less than about 100 μ m, perhaps more preferably about 40 μ m.Typically, the average diameter of these particle waters at 40 μ m between the 70 μ m.
Water atomizer(-iser) is the rotary-type atomizer of Newland, this atomizer has electric rotating machine fast, preferably, rotary speed reaches 20,000rpm, if want to reduce the size of water droplet, motor is rotatable faster, perhaps wants larger sized water droplet, and the motor rotation is slower, for example, having under the situation of wind.The use of the type of these atomizers in other technologies has commercial value, for example, uses for optimizing pesticide.Therefore, here the atomizer structure detail there is no need further discussion.Yet other atomizers will be used in the present invention, and this expects.
Till now, the road-cleaning machine has used the compression pump of high pressure water, and the water for through fixed nozzle typically is approximately 200psi.Yet some particle waters are big relatively particle waters, and therefore, individually control only produces limited effect to dust for they.Yet by using a large amount of water, they have produced effective dust control system.
Dust can be changed to the micron particles size dimensionally.Be used for water atomizer(-iser) of the present invention produce can with the approximate particle water of dust size, for example, in approximate factor 10, this particle water is in the water cloud.As the result of this smaller particle water size, according to the present invention, the efficient that dust suppresses uses atomizer very more effective than the water sprinkler and the watering device of prior art.
Further, the cloud of atomizing will keep the mist cloud form in by the air-flow of road-cleaning machine (10), yet, the water of water sprinkler will only fall earthward in the prior art, or the inner surface of suction pipe (20) of just getting wet, result in blockage, maybe when entering hopper (16), fall from suction pipe (20), directly enter the bottom of hopper (16).As the result who keeps the mist cloud form in air-flow, just as what see in Fig. 2, atomized water (54) is inhaled into during by suction pipe (20), and here, atomized water mixes with dust and fragment.Cloud, dust and fragment (54) will enter into hopper (16) then with at a high speed by suction pipe (20) then.
As shown in Figure 3, atomized water mixes with dust and fragment (56) and is brought in the original vortex action (initial cyclone action) (32) of hopper (16), if dust and dirt are not still got wet, they will here be got wet, and it is heavier to become.As a result, they will drop out from eddy current (32) easilier, just as heavy solid (34).
With reference now to Fig. 4,, also locates to be provided with the water spray device in suction pipe outlet (30).It ejects water to from the air-flow that outlet (30) is discharged from the hopper wall.Yet air-flow is carrying the water that sprays, and because of getting sidewall wet, and as the darker influence of eddy current effect, the hopper top of may getting wet.To be increased dust separating effect by wetted sidewall and top, because the water film that synthesizes on the hopper inner surface, airborne dirt and fragment will be caught (trap) dirt.Atomized water will directly be fed on the sidewall, for example, and the ejector (spray jet) in the hopper, yet, rather than use air-flow to distribute.
After the main body through hopper (16), still dust and the dirt of being taken away by the water cloud will finally pass through filter screen (36), and, if do not stoped by filter screen, will be through second eddy current (38).When dust and air continue, when dust and air circulation during by second eddy current, they will continue to be got wet, so also improve the efficient of second eddy current well.
After second cyclone unit, air should be very clean.Therefore, it will be passed to blast fan (21) along final conduit, then and by blast fan (21).
By blast fan (21) and/or by ozzle and suction pipe, it is possible making air-flow be circulated back in the hopper (16).Yet this will still further improve the efficient of dust/air-seperation system, because at first, more malarias will be by hopper (16), and secondly, airborne remaining dirt that any quilt circulates again or dust will be processed again in hopper.Yet in the illustrated embodiment, air only is discharged in the atmosphere by exhaust opening (40) then by blast fan (21).
Again with reference to figure 3, shown the replacement that is used for water atomiser or supplementary view (60)-locate in the outlet (30) of suction pipe (20), for example, in hopper (16) lining.This replacement or supplementary view (60) produce more atomised cloud, especially in hopper (16) inside, thereby, further strengthened the dirt separation in the hopper.This position also is well suited for for thick water sprinkler, and the hopper sidewall that is used to get wet strengthens the dirt separation in the hopper (16) again.
By example, fully set forth the present invention in the above.Yet, should be noted that the present invention can carry out the modification on the details just as the detailed description in additional claims.For example, in not having the machine of brush, as, in a more basic road-cleaning machine, there is not the atomizer of brush front, suction pipe can be used for from ground absorption dirt.In order to strengthen dust control and dust separating effect, replacedly, atomizer (42,60) can be positioned at hopper or along suction pipe, perhaps thick water sprinkler is in the outlet of suction pipe (20).

Claims (19)

1. road, this road comprises: suction pipe; Hopper is used to collect the dirt that sucks by suction pipe; Dust control system, this dust control system comprises water atomizer(-iser), this water atomizer(-iser) comprises rotary nozzle, this water atomizer(-iser) is used for the cloud and mist of water droplets is assigned to the air of suction pipe front, so that taken away by the dust in air particle that is full of dust that suction pipe sucks, wherein this road also comprises the brush of two reverse rotations of the front that is installed in the road-cleaning machine, and water atomizer(-iser) is assembled, so that the cloud and mist of water droplet is provided between the brush of two reverse rotations.
2. road according to claim 1 is characterized in that, and is the same little with the dirt particle that great majority are inhaled at least from the particle water of water atomizer(-iser).
3. road according to claim 1 and 2 is characterized in that, the described road dirt on the road front link of getting wet indistinctively.
4. road according to claim 1 is characterized in that, comprises the water droplet of most of diameters less than 200 μ m from the water droplets of water atomizer(-iser).
5. road according to claim 4 is characterized in that, comprises the water droplet of most of diameters less than 100 μ m from the water droplets of water atomizer(-iser).
6. according to claim 4 or 5 described road, it is characterized in that, from the average diameter of the water droplets of water atomizer(-iser) between 40 μ m and 70 μ m.
7. road according to claim 1 is characterized in that, dust control system is equipped with a water tank or a plurality of water tank, the volume of water tank approximately be hopper volume 20%.
8. machine according to claim 1 is characterized in that, another water atomizer(-iser) is set in hopper.
9. machine according to claim 1 is characterized in that, machine makes by hopper and turns back to air re-circulation in the hopper again.
10. machine according to claim 9 is characterized in that, the air of recycling is directed into the position of suction pipe front so that air re-circulation is arrived hopper.
11. machine according to claim 1 is characterized in that, water atomizer(-iser) is a nozzle.
12. machine according to claim 1 is characterized in that, can control from the average drop size of atomizer.
13. machine according to claim 1 is characterized in that, comprises dust sensor, and dust control system is applicable to that the dust that detects according to sensor automatically opens.
14. machine according to claim 1 is characterized in that dust control system comprises water sprinkler, this water sprinkler is positioned at the suction pipe exit, or in hopper, is used to the inside of getting hopper wet.
15. machine according to claim 1 is characterized in that, described hopper comprises whirlpool separator.
16. equipment of reinstalling that is used for road, comprise that the water atomizer(-iser) and the device that makes water fogging are installed to the erecting device on the machine, wherein this water atomizer(-iser) comprises rotary nozzle, so that the cloud and mist of water droplets is assigned in the air of machine suction pipe front, the dust in air particle that is full of dust that makes water droplet be inhaled into suction pipe is taken away, wherein water atomizer(-iser) is assembled, so that the cloud and mist of water droplet is provided between the brush of two reverse rotations of road.
17. the dust control method of a road, this road has suction pipe and is used to collect the hopper of the dirt that is sucked by suction pipe, this method comprises and adopts the water atomizer(-iser) comprise rotary nozzle that the cloud and mist of water droplets is assigned in the air of machine suction pipe front, and the cloud and mist of water droplets is provided between the brush of two reverse rotations of road, and the dust in air particle that is full of dust that makes water droplet be inhaled into suction pipe is taken away.
18. method according to claim 17 is characterized in that, the water of atomizing is processed so that reduce the surface tension of water.
19. method according to claim 18 is characterized in that, described processing is by adding one or more following material: soap, cleaning agent, or antiseptic.
CN2005800465949A 2004-12-06 2005-12-06 Dust control system Expired - Fee Related CN101137793B (en)

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PCT/GB2005/004683 WO2006061602A1 (en) 2004-12-06 2005-12-06 Dust control system

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CA2589913A1 (en) 2006-06-15
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US20090300870A1 (en) 2009-12-10
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CN101137793A (en) 2008-03-05
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