CN106958220A - One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase - Google Patents
One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase Download PDFInfo
- Publication number
- CN106958220A CN106958220A CN201710341018.1A CN201710341018A CN106958220A CN 106958220 A CN106958220 A CN 106958220A CN 201710341018 A CN201710341018 A CN 201710341018A CN 106958220 A CN106958220 A CN 106958220A
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- water
- suction hose
- road surface
- dust
- sparge pipe
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
- E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Abstract
The present invention relates to deduster field, more particularly to one kind directly dust arrester is inhaled using the water attack road surface depression cavity mud dust suspension phase.Its technical scheme is：One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, it is characterised in that including fixed mount, water tank and water pump are connected on fixed mount, the water inlet of water pump is connected with water tank, the delivery port of water pump is connected with sparge pipe, and sparge pipe is connected with shower nozzle；Suction hose and vavuum pump are also separately installed with fixed mount, the entrance of vavuum pump is connected with suction hose, and the bottom of suction hose is hinged with deflector, and deflector is arranged at side of the suction hose away from sparge pipe, the outlet of vavuum pump is connected with drainpipe, and sparge pipe is tilted toward the direction close to suction hose.The invention provides a kind of water attack road surface depression space silt dirt and silt dirt be suspended in impact water during vacuum take away entrainment silt dirt sewage dust arrester, improve road surface dust removal efficiency.
Description
Technical field
The present invention relates to deduster field, more particularly to one kind are straight using the water attack road surface depression cavity mud dust suspension phase
Inhale dust arrester.
Background technology
Need to be reclaimed the dust on road surface in the cleaning of road surface, it is to avoid dust deposit and the difficulty for increasing cleaning
Degree.Existing road surface cleaning device is difficult to effectively reclaim the dust for being deposited on road surface depression space, and dust removal efficiency is generally not
It is high.Any road surface, no matter cement pavement, all there is recessed cavity of different shapes, the connection on patch block road surface in bituminous paving, road surface
There is gap depression in place, these recessed cavities have certain collecting effect to micro silt dirt, play certain control dirt, this mistake
Journey appears in new road surface and builds up initial stage.Lasting injection of the silt dirt come with external belt to recessed cavity, the mud of recessed cavity
Sand and dust heap comes more, and the collection to silt dirt is most lost at last, and this state opens the process of airborne dust.Because utilizing
Current technology can not remove the silt dirt in road surface depression cavity, brush, wash, rush, inhale in any case, the silt dirt of its recessed cavity
It can not remove, rainy day vehicle rolling road surface, the silt dirt of recessed cavity, shape are taken in the impact of tire road pavement recessed cavity out of
Into band road face.When bath is done on fine day road surface, the silt dirt of recessed cavity shakes out by automotive wheel, flies everywhere with flow-disturbing
Raise, this vicious circle, into the common fault of city " rainy day mud flashes, and fine day dirt flies poplar ".
Number of patent application discloses a kind of pavement cleaning for 201520540548.5 patent of invention, including car body and clear
Sweeping device, the clearing apparatus is arranged on car body front end, and clearing apparatus includes the endless belt of closed circulation, some confession endless belts
Installing for winding is provided with along annular on the outside of the solidifying tape drive mechanism of arc that roll shaft group and driving endless belt are rotated, the endless belt
It is described to supply the appearance material space that rubbish is placed between cleaning brush on the cleaning brush of strip length direction spaced set, endless belt
Roll shaft group is installed to include in the top backing up roll and lower backing roll being distributed up and down, the present apparatus in car body by setting clearing apparatus
And dust arrester, when car body is moved, ground first passes through clearing apparatus cleaning, then by dust arrester that clearing apparatus is clear
The rubbish omitted when sweeping is collected, it is ensured that clean effect, and the setting for passing through dust arrester, it is to avoid usual manner exists
The dust raising phenomenon of appearance during road cleaning is carried out, the pollution to air is reduced.
Above-mentioned clearing apparatus can be cleaned the larger rubbish of volume, but can not be by road surface or to be deposited on road surface recessed
The dust for falling into place sweeps out.Dedusting mechanism road pavement can carry out dedusting to a certain extent, and still, air duct road pavement is blown
When, dust can be made to fly upward, do not ensure that dust is collected by bridge crossing plate and disposal box.Also, with the mode pair blown
Road surface carries out dedusting, it is impossible to remove the dust at road surface depression, therefore, the dust removing effects of the device are limited.Can from above-mentioned analysis
It is to find out, the dedusting collecting effect of gas as the medium for carrying silt dirt is poor, accordingly, it is considered to regard water as carrying silt
The medium of dirt.Water dissolves as good silt dirt to be rinsed or recovering medium, but it has three big unfavorable features:Firstth, water
Controllability extreme difference, ejection hits to ground, it is difficult to effectively reclaim.Secondth, entrainment silt dirt fortune could must be dissolved under high water speed
It is dynamic, spray the effect extreme difference that the low speed water after reduction of speed carries silt dirt secretly.3rd, in road surface airborne dust, mainly road surface depression cavity
Silt dirt cause, remove it is extremely difficult, there is presently no the proprietary clearance technique for road surface depression cavity.Only road pavement
It is quick in the of short duration time slot of high-speed Medium aqueous suspension silt dirt to take away and return when dented space silt dirt carries out water slug
Impact water is received, the real road pavement silt dirt of ability is carried out thoroughly and high-efficient cleaning is removed.Do not returned immediately after the parallel impact or impact of water
Receive impact water and cause water low speed PARALLEL FLOW again, small scavenging action can only be played to the silt dirt of recessed cavity.However, road surface
The silt dirt of dented space is the root for causing airborne dust, if the silt dirt of dented space can not be removed, airborne dust can not be avoided.
The road surface dedusting operation of existing form, the part silt dirt of road surface recessed cavity can be gone out by media impingement, also can
The sewage that part is sprayed at road surface is taken away, but all without the of short duration time slot pair for effectively utilizing high-speed Medium aqueous suspension silt dirt
Silt dirt is reclaimed, therefore, and the sewage rate of recovery is not universal high.After cleansing medium water water speed declines, silt dirt is deposited in again
In the other recessed cavities in road surface, so that road surface depression cavity dust-laden and can not be removed thoroughly all the time.
The content of the invention
Instant invention overcomes the deficiencies in the prior art there is provided a kind of water attack road surface depression space silt dirt and in silt dirt
Vacuum takes the dust arrester of the sewage of entrainment silt dirt away during being suspended in impact water, improves road surface dust removal efficiency, solves existing
The problem of dust arrester can not reclaim the sewage behind impact road surface and low dust removal efficiency.
To solve above-mentioned technical problem, the present invention uses following technical scheme：
One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, it is characterised in that including fixation
Water tank and water pump are connected on frame, fixed mount, the water inlet of water pump is connected with water tank, the delivery port of water pump is connected with water spray
Pipe, sparge pipe is connected with shower nozzle；Suction hose and vavuum pump, the entrance and suction hose of vavuum pump are also separately installed with fixed mount
Connection, the bottom of suction hose is hinged with deflector, and deflector is arranged at side of the suction hose away from sparge pipe, the outlet of vavuum pump
Drainpipe is connected with, sparge pipe is tilted toward the direction close to suction hose.
As the preferred scheme of the present invention, the water that side of the deflector bottom away from sparge pipe sprays with shower nozzle is on ground
Spacing between the drop point in face is 0~20cm.
As the preferred scheme of the present invention, the suction hose is fixed with water fender close to the side of sparge pipe, and sparge pipe is leaned on
One end of nearly shower nozzle is fixed on water fender.
As the preferred scheme of the present invention, the shower nozzle is arranged in suction hose.
As the preferred scheme of the present invention, the suction hose is multigroup, and multigroup suction hose is longitudinally set up in parallel, each water suction
The bottom of pipe is hinged with a deflector.
As the preferred scheme of the present invention, the delivery port of the water pump is also associated with some auxiliary sparge pipes, auxiliary water spray
The other end of pipe is connected with auxiliary nozzle.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is sprayed water using sparge pipe road pavement, and the water with pressure can be by road surface and the ash of recess
Dirt, which is all impacted, to be come.After the laying dust for being deposited on dented space is washed away out by current, current also have certain speed, therefore,
Silt dirt can be suspended in current, and being rushed out the silt dirt come can't fall in other dented spaces immediately.Deflector is leaned on
Nearly shower nozzle is set, therefore, after vacuum pump startup, and negative pressure is formed in suction hose, and silt dirt carries silt secretly when being also suspended in current
The sewage of dirt is siphoned away by suction hose, it is to avoid silt dirt is fallen in dented space again.The end of deflector is contacted all the time
Ground, so that, deflector can stop that impact water gap between suction hose and ground is lost in, and improve collection of the suction hose to sewage
Rate.Also, when current are flowed on deflector, current can press down deflector, it is ensured that deflector end is close to ground, it is to avoid punching
Strike waters loss.Most of dust can wash away out and be taken away by suction hose by water as fluid liquid, it is to avoid be taken using gas
During band dust, the problem of gas flow is unstable, dust flies away out.The present invention substantially increases road surface sewage collecting and dust removal efficiency
Dust removal efficiency, through experiment, waste water collection rate of the invention can reach 90%, and road surface dust removal efficiency reaches 85%.
2nd, the water that shower nozzle sprays also has certain flow rate in the distance range for spraying 20cm, and silt dirt is also suspended in current
When middle, therefore, suction hose immediately can take sewage away, it is to avoid silt dirt is fallen in depression hole again in water.The present invention passes through
Suction hose takes sewage away, improves waste water collection rate, by taking sewage away in the range of current drop point 20cm, it is ensured that dedusting
Rate.
3rd, water fender can avoid impact water from top splash, be lost in, and under the stop of water fender, the present invention can be carried further
The high sewage rate of recovery, so that, improve dust removal efficiency.
4th, when shower nozzle is arranged in suction hose, the water that shower nozzle sprays can fully be blocked by suction hose, it is to avoid the stream of impact water
Lose.
5th, when suction hose is multigroup, negative pressure in a balanced way is formed in multiple suction hoses, it is ensured that longitudinal direction is equal compared with broad way face
Even water suction, it is adaptable to which the dedusting compared with broad way face works.
6th, the setting of auxiliary sparge pipe is not simply to be superimposed, but is more than two effect with one-plus-one.Sparge pipe is not
Dust may be washed away completely and be collected by suction hose, the dust not being collected still has certain positive speed of service, then
Auxiliary sparge pipe can be easier the dust being flushed to sparge pipe or deflector, so that, dust is finally collected.It is readily apparent that, such as
Fruit road pavement is once cleaned, then later carries out clearing up for second, when clearing up for the second time, under the dust left is deposited
Come, now need bigger waterpower to be washed away and collected.Therefore, a cleaning effect of the invention is better than single-stage twice
The effect of water injector cleaning.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation when present invention has water fender；
Fig. 3 is the structural representation that shower nozzle is arranged at present invention when in suction hose；
Fig. 4 is the structural representation of some suction hoses and deflector.
In figure, 1- fixed mounts, 2- water tanks, 3- water pumps, 4- sparge pipes, 5- suction hoses, 6- vavuum pumps, 7- deflectors, 8- gears
Water plate, 9- auxiliary sparge pipes, 41- shower nozzles, 61- drainpipes, 91- auxiliary nozzles.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Contrast test
Subject：A, with common fountain head and with common water pipe structure collect sewage dust arrester；B, utilize rolling
Take turns and carry out round brush dedusting to ground and collect the sewage on roller with scraper plate；C, the present invention.
Experiment purpose：A, B, C waste water collection rate and dust removal efficiency are contrasted, wherein, waste water collection rate is to be returned in certain time
Receive water and spray the ratio of water, dust removal efficiency is the dust quality and the preceding road surface of dedusting in unit area ash being collected in unit area
The ratio of dirt quality, the dust quality being collected is equal to dust quality before dedusting and subtracts road dust quality after dedusting.
Experimental result：A waste water collection rate is 30%~40%, and dust removal efficiency is 20%~30%；B waste water collection rate is
25%~35%, dust removal efficiency is 30%~40%；C waste water collection rate is 80%~90%, and dust removal efficiency reaches 80%~85%.
Interpretation of result：Due to the setting of structure and deflector 5 relative to the position of fountain head 43 of deflector 5 of the present invention, and
And the direction of deflector 5 is arrived in invention along water injector 4 so that waste water collection rate of the present invention is greatly improved, correspondingly, and dust removal efficiency is big
It is big to improve.
Embodiment one
One kind directly inhales dust arrester, including fixed mount 1, fixed mount 1 using the water attack road surface depression cavity mud dust suspension phase
On be connected to water tank 2 and water pump 3, the water inlet of water pump 3 is connected with water tank 2, and the delivery port of water pump 3 is connected with sparge pipe 4,
Sparge pipe 4 is connected with shower nozzle 41；Suction hose 5 and vavuum pump 6, the entrance of vavuum pump 6 and suction are also separately installed with fixed mount 1
Water pipe 5 is connected, and the bottom of suction hose 5 is hinged with deflector 7, and deflector 7 is arranged at side of the suction hose 5 away from sparge pipe 4, very
The outlet of empty pump 6 is connected with drainpipe 61, and sparge pipe 4 is tilted toward the direction close to suction hose 5.
The present invention is sprayed water using the road pavement of sparge pipe 4, and the water with pressure can be by road surface and the ash of recess
Dirt, which is all impacted, to be come.After the laying dust for being deposited on dented space is washed away out by current, current also have certain speed, therefore,
Silt dirt can be suspended in current, and being rushed out the silt dirt come can't fall in other dented spaces immediately.Deflector 7 is leaned on
Nearly shower nozzle 41 is set, therefore, after vavuum pump 6 starts, and negative pressure is formed in suction hose 5, and silt dirt is carried secretly when being also suspended in current
The sewage of silt dirt is siphoned away by suction hose 5, it is to avoid silt dirt is fallen in dented space again.Begin the end of deflector 7
Terminating tread surface, so that, deflector 7 can stop that impact water is lost in from gap between suction hose 5 and ground, improve 5 pairs of suction hose
The collection rate of sewage.Also, when current are flowed on deflector 7, current can press down deflector 7, it is ensured that the end of deflector 7 is leaned on
It is near the ground, it is to avoid impact current lose.Most of dust can be washed away out and be taken away by suction hose 5 by water as fluid liquid, be kept away
When having exempted to carry dust using gas, the problem of gas flow is unstable, dust flies away out.It is dirty that the present invention substantially increases road surface
Water is collected and dust removal efficiency dust removal efficiency, through experiment, and waste water collection rate of the invention can reach 90%, and road surface dust removal efficiency reaches 85%.
Embodiment two
On the basis of embodiment one, the water that side of the bottom of deflector 7 away from sparge pipe 4 sprays with shower nozzle 41 exists
Spacing between the drop point on ground is 0~20cm.
The water that shower nozzle 41 sprays also has certain flow rate in the distance range for spraying 20cm, and silt dirt is also suspended in current
When middle, therefore, suction hose 5 immediately can take sewage away, it is to avoid silt dirt is fallen in depression hole again in water.The present invention passes through
Suction hose 5 takes sewage away, improves waste water collection rate, by taking sewage away in the range of current drop point 20cm, it is ensured that remove
Dirt rate.
Embodiment three
On the basis of embodiment one or embodiment two, the suction hose 5 is fixed with water fender close to the side of sparge pipe 4
8, sparge pipe 4 is fixed on water fender 8 close to one end of shower nozzle 41.
Water fender 8 can avoid impact water from top splash, be lost in, and under the stop of water fender 8, the present invention can be carried further
The high sewage rate of recovery, so that, improve dust removal efficiency.
Example IV
On the basis of above-mentioned any one embodiment, the shower nozzle 41 is arranged in suction hose 5.Shower nozzle 41 is arranged at suction
When in water pipe 4, the water that shower nozzle 41 sprays can fully be blocked by suction hose 4, it is to avoid the loss of impact water.
Embodiment five
On the basis of above-mentioned any one embodiment, the suction hose 5 is multigroup, and multigroup longitudinal direction of suction hose 5 is set side by side
Put, the bottom of each suction hose 5 is hinged with a deflector 8.
When suction hose 5 is multigroup, negative pressure in a balanced way is formed in multiple suction hoses 5, it is ensured that longitudinal direction is equal compared with broad way face
Even water suction, it is adaptable to which the dedusting compared with broad way face works.
Embodiment six
On the basis of above-mentioned any one embodiment, the delivery port of the water pump 3 is also associated with some auxiliary sparge pipes
9, the other end of auxiliary sparge pipe 9 is connected with auxiliary nozzle 91.
The setting for aiding in sparge pipe 9 is not simply to be superimposed, but is more than two effect with one-plus-one.Sparge pipe 4 is not
Dust may be washed away completely and be collected by suction hose 5, the dust not being collected still has certain positive speed of service, then
Auxiliary sparge pipe 9 can be easier the dust being flushed to sparge pipe 4 or deflector 7, so that, dust is finally collected.It is readily apparent that,
If road pavement is once cleaned, then later progress is cleared up for the second time, when clearing up for the second time, under the dust left is deposited
Come, now need bigger waterpower to be washed away and collected.Therefore, a cleaning effect of the invention is better than single-stage twice
The effect of water injector cleaning.
Claims (6)
1. one kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, it is characterised in that including fixed mount
(1) water tank (2) and water pump (3), are connected on fixed mount (1), the water inlet of water pump (3) is connected with water tank (2), water pump
(3) delivery port is connected with sparge pipe (4), and sparge pipe (4) is connected with shower nozzle (41)；Fixed mount is also separately installed with (1)
Suction hose (5) and vavuum pump (6), the entrance of vavuum pump (6) are connected with suction hose (5), and the bottom of suction hose (5) is hinged with water conservancy diversion
Plate (7), deflector (7) is arranged at side of the suction hose (5) away from sparge pipe (4), and the outlet of vavuum pump (6) is connected with drainpipe
(61), sparge pipe (4) is tilted toward the direction close to suction hose (5).
2. one kind according to claim 1 directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, its
Be characterised by, the water that side of deflector (7) bottom away from sparge pipe (4) and shower nozzle (41) spray ground drop point it
Between spacing be 0~20cm.
3. one kind according to claim 2 directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, its
It is characterised by, the suction hose (5) is fixed with water fender (8) close to the side of sparge pipe (4), and sparge pipe (4) is close to shower nozzle
(41) one end is fixed on water fender (8).
4. one kind according to claim 2 directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase, its
It is characterised by, the shower nozzle (41) is arranged in suction hose (5).
5. one kind according to Claims 1 to 4 any one is directly inhaled using the water attack road surface depression cavity mud dust suspension phase
Dust arrester, it is characterised in that the suction hose (5) is multigroup, and multigroup suction hose (5) is longitudinally set up in parallel, each suction hose
(5) bottom is hinged with a deflector (8).
6. one kind according to Claims 1 to 4 any one is directly inhaled using the water attack road surface depression cavity mud dust suspension phase
Dust arrester, it is characterised in that the delivery port of the water pump (3) is also associated with some auxiliary sparge pipes (9), aids in sparge pipe
(9) the other end is connected with auxiliary nozzle (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341018.1A CN106958220A (en) | 2017-05-16 | 2017-05-16 | One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341018.1A CN106958220A (en) | 2017-05-16 | 2017-05-16 | One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106958220A true CN106958220A (en) | 2017-07-18 |
Family
ID=59482542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710341018.1A Pending CN106958220A (en) | 2017-05-16 | 2017-05-16 | One kind directly inhales dust arrester using the water attack road surface depression cavity mud dust suspension phase |
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| CN (1) | CN106958220A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3133789A1 (en) * | 1981-08-26 | 1983-07-07 | Steffen 8400 Regensburg Graef | Method for cleaning surfaces and surface cleaning machine for carrying out this method |
| JPH06228926A (en) * | 1993-01-29 | 1994-08-16 | Kooriyama Narasaki Seisakusho:Kk | Hydraulic dust collector |
| JPH0959953A (en) * | 1995-08-17 | 1997-03-04 | Sakai Heavy Ind Ltd | Elimination device of clogged article on pavement |
| JP2005042454A (en) * | 2003-07-24 | 2005-02-17 | Ishikawajima Harima Heavy Ind Co Ltd | Functional recovery device for draining pavement |
| CN201050044Y (en) * | 2007-06-18 | 2008-04-23 | 陈桃则 | Air cleaning vehicle |
| DE102010011418A1 (en) * | 2010-03-15 | 2011-09-15 | Wolfgang Seeholzer | Apparatus, system and method for cleaning artificial turf |
| CN103758066A (en) * | 2014-02-13 | 2014-04-30 | 吉林前沅专用汽车制造股份有限公司 | Water saving road cleaning vehicle |
-
2017
- 2017-05-16 CN CN201710341018.1A patent/CN106958220A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3133789A1 (en) * | 1981-08-26 | 1983-07-07 | Steffen 8400 Regensburg Graef | Method for cleaning surfaces and surface cleaning machine for carrying out this method |
| JPH06228926A (en) * | 1993-01-29 | 1994-08-16 | Kooriyama Narasaki Seisakusho:Kk | Hydraulic dust collector |
| JPH0959953A (en) * | 1995-08-17 | 1997-03-04 | Sakai Heavy Ind Ltd | Elimination device of clogged article on pavement |
| JP2005042454A (en) * | 2003-07-24 | 2005-02-17 | Ishikawajima Harima Heavy Ind Co Ltd | Functional recovery device for draining pavement |
| CN201050044Y (en) * | 2007-06-18 | 2008-04-23 | 陈桃则 | Air cleaning vehicle |
| DE102010011418A1 (en) * | 2010-03-15 | 2011-09-15 | Wolfgang Seeholzer | Apparatus, system and method for cleaning artificial turf |
| CN103758066A (en) * | 2014-02-13 | 2014-04-30 | 吉林前沅专用汽车制造股份有限公司 | Water saving road cleaning vehicle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170718 |
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| RJ01 | Rejection of invention patent application after publication |