CN111305061A - Drainage clean system of public road bridge roof beam - Google Patents
Drainage clean system of public road bridge roof beam Download PDFInfo
- Publication number
- CN111305061A CN111305061A CN202010105976.0A CN202010105976A CN111305061A CN 111305061 A CN111305061 A CN 111305061A CN 202010105976 A CN202010105976 A CN 202010105976A CN 111305061 A CN111305061 A CN 111305061A
- Authority
- CN
- China
- Prior art keywords
- drainage
- rainwater
- bevel gear
- water leakage
- leakage groove
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 abstract description 7
- 238000005381 potential energy Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000011045 prefiltration Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 3
- 239000003657 drainage water Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/086—Drainage arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6423—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a translational movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
- B01D2029/033—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting bar screens
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a drainage purification system of a highway bridge, which comprises a water leakage groove, wherein a filtering grid for filtering rainwater is arranged at the upper part of the water leakage groove, a cleaning component for cleaning a drainage strip is arranged below the filtering grid, and a power mechanism for driving the cleaning component to reciprocate along the drainage strip direction by means of water flow is arranged in the water leakage groove. Utilize and filter the grid to the rainwater prefilter who discharges into in the basin that leaks, fall the stone on the road surface, and simultaneously, concentrate the gravitational potential energy who becomes the rainwater through the water-drain pipe with the rainwater gathering by the funnel and drive the actuating mechanism function into mechanical energy, thereby it scrubs to drive clean subassembly to filter the grid, prevent to block up and reduce the filtration purification effect, and deposit the stone of tiny granule under the effect of basin that leaks, filter sand and mud in the rainwater through flange and downcomer through one-level filter screen and second grade filter screen, reach the multistage purification efficiency.
Description
Technical Field
The invention relates to a drainage system, in particular to a drainage purification system for a highway bridge.
Background
According to the current situation of the facilities under the Chinese municipal road, different pipelines are generally arranged, such as electric power, communication, coal gas, water supply, drainage pipelines and the like.
Municipal drainage pipes refer to rainwater and sewage pipelines under municipal roads and bridges, which are commonly called as "sewer pipelines", and are generally called as municipal drainage pipes in engineering. The drainage pipeline takes measures of rainwater and sewage diversion into consideration, namely rainwater is generally discharged into rivers nearby, and sewage is discharged into a sewage treatment plant, so the municipal drainage pipeline comprises two pipelines of rainwater and sewage.
At present, most of existing drainage pipelines are used for filtering and purifying drainage water through grids which are arranged on a road surface bridge floor and flush with the road surface, when more sludge or stones are arranged on the road surface, the grids can be attached to the grids, and the grids are easy to agglomerate and block after long-term drying, so that the purification of the drainage water is not facilitated.
Disclosure of Invention
Based on the defects in the prior art mentioned in the background art, the invention provides a drainage purification system for a highway bridge.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps: the utility model provides a drainage clean system of public road bridge roof beam, is including installing the water leakage groove that is used for receiving road surface and bridge floor rainwater between pitch layer and concrete layer, water leakage groove upper portion is provided with the filtration grid that is used for filtering the rainwater, the equidistance is seted up a plurality of drainage strips that supply the rainwater to get into the water leakage groove on the filtration grid, it is provided with and is used for the clear clean subassembly of drainage strip to filter the grid below, install in the water leakage groove and follow with the help of the clean subassembly of rivers drive drainage strip direction reciprocating motion's power unit.
The cleaning assembly comprises guide rails fixed on two sides of the water leakage groove, moving parts with two ends slidably sleeved on the guide rails, brushes fixed on the moving parts and corresponding to the drainage strips one by one, and clamping parts fixed below the moving parts and used for being connected with the driving mechanism.
The driving mechanism comprises a bevel gear set, a driven part, a rotating wheel and a rotating column, wherein the bevel gear set is rotatably arranged below the clamping piece, the driven part is connected with the bevel gear set, the rotating wheel is fixed at the top of the driven part, and the rotating column is fixed at the eccentric position of the upper wall of the rotating wheel and is in sliding embedding with the clamping piece.
The inner wall of the middle of the water leakage groove is provided with a protrusion, a funnel used for receiving rainwater entering from the filtering grid is connected to the protrusion through a bolt, the driven piece penetrates through the leak and is in sealing connection with the bearing, and the bevel gear group is installed at the bottom of the water leakage groove through an installation piece.
As a still further scheme of the invention: the funnel below runs through the intercommunication and has the outlet pipe that is used for discharging the rainwater, the outlet pipe below is rotated through another installed part and is provided with revolution mechanic, revolution mechanic passes through the driving medium and connects bevel gear set, and the outlet pipe aims at revolution mechanic's eccentric department.
As a still further scheme of the invention: the rotating structure comprises a driving wheel which is rotatably arranged at the top of the mounting part and connected with the transmission part and turnover plates which are fixed on two sides of the driving wheel at equal intervals on the circumference, and the bevel gear set comprises a first bevel gear connected with the transmission part and a second bevel gear which is used for fixing the lower end of the driven part and is meshed with the first bevel gear.
As a still further scheme of the invention: the bottom of the water leakage groove is provided with a sewer pipe through a flange, sealing gaskets for preventing water seepage are arranged on two sides of the joint of the flange and the sewer pipe, and the flange is fixed with the water leakage groove and a ground foundation through countersunk bolts.
As a still further scheme of the invention: the sand filter is characterized in that a primary filter screen for filtering sand is arranged at the upper opening of the flange, and a secondary filter screen for filtering slurry is arranged at the joint of the upper opening of the sewer pipe and the flange.
After adopting the structure, compared with the prior art, the invention has the following advantages: utilize and filter the grid to the rainwater prefilter who discharges into in the basin that leaks, fall the stone on the road surface, and simultaneously, concentrate the gravitational potential energy who becomes the rainwater through the water-drain pipe with the rainwater gathering by the funnel and drive the actuating mechanism function into mechanical energy, thereby it scrubs to drive clean subassembly to filter the grid, prevent to block up and reduce the filtration purification effect, and deposit the stone of tiny granule under the effect of basin that leaks, filter sand and mud in the rainwater through flange and downcomer through one-level filter screen and second grade filter screen, reach the multistage purification efficiency.
Drawings
Fig. 1 is a schematic structural view of a drainage purification system for a highway bridge.
Fig. 2 is a schematic structural view of a cleaning assembly in a drainage purification system for a road bridge.
Fig. 3 is a schematic structural view of a filtering grid and a drainage strip in a drainage purification system for a highway bridge.
Fig. 4 is a schematic structural view of a rotary column and a rotary wheel in a drainage purification system for a highway bridge.
Fig. 5 is a schematic structural view of a turning plate and a driving wheel in a drainage purification system of a highway bridge.
In the figure: 1-a water leakage groove; 2-a filter grid; 3-draining strips; 4-a brush; 5-a moving member; 6-a guide rail; 7-a snap-fit; 8-spin columns; 9-a rotating wheel; 10-a follower; 11-a funnel; 12-a water drain pipe; 13-turning over the board; 14-a driving wheel; 15-a transmission member; 16-a first bevel gear; 17-a mounting member; 18-a second bevel gear; 19-a flange; 20-first-stage filter screen; 21-a downcomer; 22-secondary filter screen; 23-sealing gasket.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 5, in an embodiment of the present invention, a drainage purification system for a highway bridge includes a water leakage groove 1 installed between an asphalt layer and a concrete layer and used for receiving rainwater on a road surface and a bridge floor, a filter grid 2 for filtering the rainwater is disposed on an upper portion of the water leakage groove 1, a plurality of drainage strips 3 for allowing the rainwater to enter the water leakage groove 1 are equidistantly disposed on the filter grid 2, a cleaning assembly for cleaning the drainage strips 3 is disposed below the filter grid 2, and a power mechanism for driving the cleaning assembly to reciprocate along a direction of the drainage strips 3 by means of water flow is installed in the water leakage groove 1.
Particularly, when rainwater on the road surface or the bridge floor is large, the rainwater enters the water leakage groove 1 through the drainage strips 3 on the filter grid 2, the power mechanism is driven by gravitational potential energy of rainwater flow to drive the cleaning component to move in a reciprocating mode to clean the filter grid 2, the drainage strips 3 on the filter grid 2 are prevented from being blocked, and the function of filtering and cleaning cannot be achieved.
In an embodiment of the present invention, the cleaning assembly includes guide rails 6 fixed on both sides of the water leakage groove 1, moving members 5 having both ends slidably fitted over the guide rails 6, brushes 4 fixed on the moving members 5 and corresponding to the drain strips 3 one by one, and engaging members 7 fixed below the moving members 5 and connected to the driving mechanism.
In detail, the driving mechanism drives the engaging member 7 to drive the moving member 5 to reciprocate along the guide rail 6, so as to drive the brush 4 to reciprocate along the opening direction of the drainage strip 3, so that garbage mixed on the drainage strip 3 is removed, and the blockage of the drainage strip 3 and the blockage of filtration and purification due to long-term accumulation are avoided.
In another embodiment of the present invention, the driving mechanism includes a bevel gear set rotatably disposed below the engaging member 7, a driven member 10 connected to the bevel gear set, a rotating wheel 9 fixed to a top of the driven member 10, and a rotating column 8 fixed to an upper wall of the rotating wheel 9 at an eccentric position and slidably engaged with the engaging member 7.
The bevel gear set drives the driven part 10 to rotate, so as to drive the rotating wheel 9 to rotate, the rotating wheel 9 drives the rotating column 8 to do circular motion, and further drives the clamping part 7 to drive the moving part 5 to move back and forth along the guide rail 6, and finally drives the brush 4 to move back and forth to brush the drainage strip 3.
In another embodiment of the invention, a protrusion is arranged on the inner wall of the middle part of the water leakage groove 1, a funnel 11 for receiving rainwater entering from the filter grid 2 is connected to the protrusion through a bolt, the driven member 10 passes through the funnel 11 and is connected with the funnel through a bearing in a sealing manner, a bevel gear set is installed at the bottom of the water leakage groove 1 through an installation member 17, the funnel 11 is used for receiving rainwater, gravitational potential energy of the rainwater is concentrated, and the concentrated power is convenient for driving the cleaning assembly to act.
In another embodiment of the present invention, a drain pipe 12 for draining rainwater is communicated below the funnel 11, a rotating structure is rotatably arranged below the drain pipe 12 through another mounting member 17, the rotating structure is connected with the bevel gear set through a transmission member 15, and the drain pipe 12 is aligned with the eccentric position of the rotating structure.
When rainwater enters the funnel 11, the rainwater is gathered and uniformly discharged from the drain pipe 12, and finally, the gravitational potential energy of the rainwater is converted into mechanical energy of a rotating structure, the transmission part 15 drives the bevel gear set to work, and finally the cleaning component is driven to act.
In another embodiment of the present invention, the rotating structure comprises a driving wheel 14 rotatably disposed on the top of the mounting member 17 and connected to the driving member 15, and a turnover plate 13 circumferentially and equidistantly fixed on both sides of the driving wheel 14, wherein the bevel gear set comprises a first bevel gear 16 connected to the driving member 15 and a second bevel gear 18 fixed to the lower end of the driven member 10 and engaged with the first bevel gear 16, and when a large amount of rain water leaks from the eccentric drain pipe 12, the turnover plate 13 is driven to rotate, and the driving wheel 14 is finally driven to rotate, and the cleaning assembly is finally driven to operate.
In another embodiment of the present invention, a drain pipe 21 is installed at the bottom of the drain tank 1 through a flange 19, sealing gaskets 23 for preventing water seepage are installed on both sides of the joint of the flange 19 and the drain pipe 21, and the flange 19 is fixed with the drain tank 1 and a ground foundation through a countersunk bolt, so that the drain height of the drain pipe 21 is raised by the flange 19, the installation strength can be improved, small particles of stones mixed with water discharged from the funnel 11 are precipitated in the drain tank 1 and cannot flow out from the flange 19 with a higher opening, and a secondary purification function is achieved.
In another embodiment of the present invention, a primary filter screen 20 for filtering sand is disposed at the upper opening of the flange 19, a secondary filter screen 22 for filtering slurry is disposed at the joint of the upper opening of the downcomer 21 and the flange 19, larger garbage on the road surface is filtered through the filter grid 2, stones are precipitated by the water leakage tank 1, and the primary filter screen 20 and the secondary filter screen 22 are used for respectively performing final filtering on the sand and the slurry, so as to realize a multi-stage filtering and purifying function of drainage.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (5)
1. The drainage purification system of the highway bridge comprises a water leakage groove (1) which is arranged between an asphalt layer and a concrete layer and used for receiving rainwater on a road surface and a bridge floor, and is characterized in that a filtering grid (2) used for filtering the rainwater is arranged at the upper part of the water leakage groove (1), a plurality of drainage strips (3) for the rainwater to enter the water leakage groove (1) are equidistantly arranged on the filtering grid (2), a cleaning component used for cleaning the drainage strips (3) is arranged below the filtering grid (2), and a power mechanism which drives the cleaning component to reciprocate along the direction of the drainage strips (3) by means of water flow is arranged in the water leakage groove (1); the cleaning assembly comprises guide rails (6) fixed on two sides of the water leakage groove (1), moving parts (5) with two ends slidably sleeved on the guide rails (6), brushes (4) fixed on the moving parts (5) and corresponding to the drainage strips (3) one by one, and clamping parts (7) fixed below the moving parts (5) and used for being connected with the driving mechanism; the driving mechanism comprises a bevel gear set, a driven part (10), a rotating wheel (9) and a rotating column (8), wherein the bevel gear set is rotatably arranged below the clamping piece (7), the driven part (10) is connected with the bevel gear set, the rotating wheel (9) is fixed at the top of the driven part (10), and the rotating column (8) is fixed at the eccentric position of the upper wall of the rotating wheel (9) and is in sliding embedding with the clamping piece (7); the rainwater drainage tank is characterized in that a protrusion is arranged on the inner wall of the middle of the water drainage tank (1), a funnel (11) used for receiving rainwater entering from the filtering grid (2) is connected to the protrusion through a bolt, the driven piece (10) penetrates through the funnel (11) and is in sealing connection with the driven piece through a bearing, and the bevel gear set is installed at the bottom of the water drainage tank (1) through an installation piece (17).
2. The drainage purification system for road bridges of claim 1, wherein: funnel (11) below is run through the intercommunication and is had wash-out pipe (12) that are used for discharging the rainwater, wash-out pipe (12) below is rotated through another installed part (17) and is provided with revolution mechanic, revolution mechanic passes through driving medium (15) and connects bevel gear group, and wash-out pipe (12) aim at revolution mechanic's eccentric department.
3. The drainage purification system for road bridges of claim 1, wherein: the rotating structure comprises a driving wheel (14) which is rotatably arranged at the top of the mounting part (17) and is connected with the transmission part (15) and turnover plates (13) which are fixed on two sides of the driving wheel (14) in a circumferential equidistant manner, and the bevel gear set comprises a first bevel gear (16) connected with the transmission part (15) and a second bevel gear (18) which is fixed at the lower end of the driven part (10) and is meshed with the first bevel gear (16).
4. The drainage purification system for road bridges of claim 1, wherein: the bottom of the water leakage groove (1) is provided with a sewer pipe (21) through a flange (19), sealing gaskets (23) for preventing water seepage are arranged on two sides of the joint of the flange (19) and the sewer pipe (21) in a cushioning mode, and the flange (19) is fixed with the water leakage groove (1) and a ground foundation through countersunk bolts.
5. The drainage purification system for road bridges of claim 4, wherein: the sand filter is characterized in that a primary filter screen (20) used for filtering sand is arranged at the upper opening of the flange (19), and a secondary filter screen (22) used for filtering mud is arranged at the joint of the upper opening of the downcomer (21) and the flange (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105976.0A CN111305061A (en) | 2020-02-20 | 2020-02-20 | Drainage clean system of public road bridge roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105976.0A CN111305061A (en) | 2020-02-20 | 2020-02-20 | Drainage clean system of public road bridge roof beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305061A true CN111305061A (en) | 2020-06-19 |
Family
ID=71151117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105976.0A Withdrawn CN111305061A (en) | 2020-02-20 | 2020-02-20 | Drainage clean system of public road bridge roof beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305061A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081221A (en) * | 2020-08-28 | 2020-12-15 | 徐小亚 | Municipal administration is with multi-functional city sewer apron |
| CN112502263A (en) * | 2020-12-15 | 2021-03-16 | 高清如 | Road and bridge drainage ditch with good drainage effect |
| CN112889651A (en) * | 2021-01-15 | 2021-06-04 | 吉林农业大学 | Automatic remote control irrigation equipment in gardens |
| CN113622259A (en) * | 2021-08-03 | 2021-11-09 | 吴进来 | Town road design waterproof construction |
| CN113699883A (en) * | 2021-09-01 | 2021-11-26 | 广州利惠网络科技有限公司 | Drainage device for bridge |
| CN114351580A (en) * | 2022-01-28 | 2022-04-15 | 江阴市众达建设有限公司 | Municipal road and bridge construction pavement drainage system and method |
| CN115006898A (en) * | 2022-06-28 | 2022-09-06 | 余姚市江河水利建筑设计有限公司 | River water purification device |
-
2020
- 2020-02-20 CN CN202010105976.0A patent/CN111305061A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081221A (en) * | 2020-08-28 | 2020-12-15 | 徐小亚 | Municipal administration is with multi-functional city sewer apron |
| CN112081221B (en) * | 2020-08-28 | 2021-11-12 | 无锡国家高新技术产业开发区市政公用事业有限公司 | Municipal administration is with multi-functional city sewer apron |
| CN112502263A (en) * | 2020-12-15 | 2021-03-16 | 高清如 | Road and bridge drainage ditch with good drainage effect |
| CN112502263B (en) * | 2020-12-15 | 2021-12-24 | 高清如 | Road and bridge drainage ditch with good drainage effect |
| CN112889651A (en) * | 2021-01-15 | 2021-06-04 | 吉林农业大学 | Automatic remote control irrigation equipment in gardens |
| CN113622259A (en) * | 2021-08-03 | 2021-11-09 | 吴进来 | Town road design waterproof construction |
| CN113699883A (en) * | 2021-09-01 | 2021-11-26 | 广州利惠网络科技有限公司 | Drainage device for bridge |
| CN114351580A (en) * | 2022-01-28 | 2022-04-15 | 江阴市众达建设有限公司 | Municipal road and bridge construction pavement drainage system and method |
| CN114351580B (en) * | 2022-01-28 | 2024-03-22 | 江阴市众达建设有限公司 | Municipal road and bridge construction pavement drainage system and method thereof |
| CN115006898A (en) * | 2022-06-28 | 2022-09-06 | 余姚市江河水利建筑设计有限公司 | River water purification device |
| CN115006898B (en) * | 2022-06-28 | 2024-04-19 | 余姚市江河水利建筑设计有限公司 | River water quality purifying device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200619 |