CN109317446B - Sewage inspection well cover for water supply and drainage facilities and installation clearance cleaning machine thereof - Google Patents
Sewage inspection well cover for water supply and drainage facilities and installation clearance cleaning machine thereof Download PDFInfo
- Publication number
- CN109317446B CN109317446B CN201811252201.5A CN201811252201A CN109317446B CN 109317446 B CN109317446 B CN 109317446B CN 201811252201 A CN201811252201 A CN 201811252201A CN 109317446 B CN109317446 B CN 109317446B
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- brush head
- head
- inspection well
- sewage inspection
- well lid
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- 239000010865 sewage Substances 0.000 title claims abstract description 49
- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- 238000007689 inspection Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims description 18
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 2
- 238000011012 sanitization Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000007921 spray Substances 0.000 description 8
- 239000004575 stone Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B08B1/12—
-
- B08B1/32—
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
Abstract
The invention relates to a sewage inspection well cover for water supply and drainage facilities and a cleaning machine for installation gaps thereof, which structurally comprises: lifting column, the hydraulic stem, a supporting bench, the support post, the wheel is removed to the lockable, the purger, the mount pad brush head, the electro-magnet adsorbs the seat, sewage inspection well lid, the well lid base, the hole for water spraying, a motor, the upper end both sides of lifting column and the top of hydraulic stem are through welded mode fixed connection, when wasing sewage inspection well lid, utilize the commentaries on classics power of wasing the well lid to drive the mount pad brush head and brush on the mount pad simultaneously, utilize the centrifugal force of rotatory production to make the mount pad brush head medial surface of laminating the mount pad more, recycle the radian of mount pad brush head itself, the gravel and sand impurity sanitization in the fixed right angle on the mount pad, the surface is more for laminating when making sewage inspection well lid wash the installation that finishes, the installation gap has better leakproofness, the thorn nose gas that rises when preventing sewage feedwater drainage from wafts flies out, the life to resident on every.
Description
Technical Field
The invention discloses a sewage inspection well cover for a water supply and drainage facility and an installation gap cleaning machine thereof, and relates to the field of water supply and drainage facilities.
Background
Sewage inspection well lid settles in feedwater drainage facility sewage inspection mouth top more, because of sewage contains more volatile impurity, produces numerous sharp gas in the flow, drifts away from the inspection mouth and goes out and will cause the influence to resident's life on every side, so sewage inspection well lid has the requirement of certain leakproofness, prevents to drift away continuously of sharp gas.
But when the well lid daily maintenance was washd, some rubble or other hard things may be left over on the mount pad of well lid, have certain clearance when making the well lid wash the back installation, lead to sewage detection well lid's leakproofness to receive the influence, cause pungent gas probably to drift from between the clearance and go out to resident's life on every side and produce the influence.
Therefore, it is necessary to provide a sewage manhole cover for water supply and drainage facilities and a cleaning machine for installation gaps thereof.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a sewage inspection well cover for a water supply and drainage facility and an installation gap cleaning machine thereof, and solves the problem that sand and stone impurities still exist between the sewage inspection well cover and an installation seat after the sewage inspection well cover is cleaned, so that the sealing performance of the sewage inspection well cover is influenced.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sewage inspection well lid for water supply and drainage facility and installation clearance cleaning machine thereof, its structure includes: the device comprises a lifting column, a hydraulic rod, a supporting table, support columns, lockable moving wheels, a cleaner, a brush head of an installation base, an electromagnet adsorption base, a sewage inspection well cover, a well cover base, a water spray hole and a motor, wherein two sides of the upper end of the lifting column are fixedly connected with the top end of the hydraulic rod in a welding mode, the lifting column is nested with the central part of the supporting table, the lower end of the hydraulic rod is embedded in the upper surface of the supporting table, the support columns are fixedly installed on two sides of the supporting table, the lockable moving wheels are installed at the lower ends of the support columns and are fixedly connected in a nested mode, the cleaner is installed on two sides of the lower surface of the supporting table, the supporting table is movably connected with the cleaner, the tail end of the cleaner is hinged with the head end of the brush head of the installation base, and the lower ends of the lifting column are fixedly, the lower surface that the electro-magnet adsorbs the seat is laminated with sewage inspection well lid's upper surface mutually, sewage inspection well lid's lower surface embedding is installed in the upper surface of well lid base, the medial surface in the purger is installed in the head end embedding of hole for water spraying, the lower extreme embedding of motor is installed in the left side top of brace table.
As a preferable scheme of the present invention, the support table includes a gear transmission shaft, a rotating disc, a rotating bearing, a working platform, and a limit groove, the left side of the lower end of the gear transmission shaft is engaged with the left inner side of the rotating disc, the inner side of the rotating disc is attached to the outer side of the rotating bearing and has the same axis, the rotating disc is embedded in the working platform, the rotating bearing is embedded in the working platform, and the rotating disc and the limit groove are of an integrated structure.
As a preferable scheme of the invention, the brush head of the mounting seat comprises a supporting block, a brush seat and a cleaning brush head, the right side of the lower end of the supporting block is fixedly connected with the left side of the brush seat in a welding mode, and the front surface of the brush seat is connected with the back surface of the cleaning brush head in a nesting mode.
As a preferable mode of the present invention, the cleaning brush head comprises a three-head scraping block, bristles, and a brush head, wherein the head ends of the three-head scraping block and the brush head are in the same plane, the head ends of the three-head scraping block and the right side of the brush head are fixedly connected, and the head ends of the bristles are embedded and installed on the right side of the brush head.
As a preferred aspect of the present invention, the cleaning brush head is in the form of an arc, which provides greater cleaning power than prior art square brush heads.
As a preferable scheme of the invention, the upper surface of the rotating disc is provided with a groove ring, so that the rotating disc has a more stable rotating effect compared with the existing plane rotating disc.
As a preferable scheme of the invention, the three scraping blocks with different tip lengths are attached to the surface of the cleaning brush head, so that the cleaning brush head has better cleaning effect on the deep part of the gap compared with the square scraping blocks in the prior art.
As a preferable scheme of the invention, the surface of the cleaning brush head is attached with a plurality of three-head scraping blocks and bristles, so that the cleaning brush head has stronger scraping effect on dust and sand compared with the common rough surface in the prior art, and effectively scrapes the dust and sand adhered to the surface of the well cover.
(III) advantageous effects
Compared with the prior art, the invention provides a sewage inspection well cover for a water supply and drainage facility and an installation gap cleaning machine thereof, which have the following beneficial effects:
when the well cover is cleaned, the cleaner and the mounting seat brush head are driven to clean the sewage inspection well cover by utilizing the rotation of the rotating disc, so that the sewage inspection well cover has a faster cleaning speed, the cleaner and the shape similar to the edge of the well cover are matched, the water spray holes can fully and uniformly spray the mounting and fixing part of the well cover, the edge part of the well cover is thoroughly cleaned, when the sewage inspection well cover is cleaned, the rotating force of the cleaning well cover is utilized to drive the mounting seat brush head to brush on the mounting seat, the centrifugal force generated by the rotation is utilized to enable the mounting seat brush head to be more attached to the inner side surface of the mounting seat, the radian of the mounting seat brush head is utilized to clean sand and stone impurities in a fixed right angle on the mounting seat, the surface of the sewage inspection well cover is more attached when the sewage inspection well cover is cleaned and mounted, the mounting gap has better tightness, and the rising stinging gas is prevented from floating out when, has influence on the life of the surrounding residents.
Drawings
FIG. 1 is a schematic structural view of a sewage manhole cover for a water supply and drainage facility and a cleaning machine for an installation gap thereof according to the present invention.
FIG. 2 is a schematic view showing the operation of a manhole cover and a cleaning machine for installation gaps thereof for water supply and drainage facilities according to the present invention.
FIG. 3 is a cross-sectional view of a support stage according to the present invention.
FIG. 4 is a schematic structural diagram of a rotary disk according to the present invention.
Fig. 5 is a schematic structural view of a brush head of a mounting base.
FIG. 6 is an enlarged view of a portion A of FIG. 5 according to the present invention.
Description of reference numerals: the device comprises a lifting column-1, a hydraulic rod-2, a support table-3, a support column-4, a lockable moving wheel-5, a cleaner-6, a mounting seat brush head-7, an electromagnet adsorption seat-8, a sewage inspection well cover-9, a well cover base-10, a water spray hole-11, a motor-12, a gear transmission shaft-31, a rotating disc-32, a rotating bearing-33, a working platform-34, a limiting groove-35, a support block-71, a brush seat-72, a cleaning brush head-73, a three-head scraping block-731, bristles-732 and a brush head-733.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 6, the present invention provides a sewage manhole cover for a water supply and drainage facility and a cleaning machine for an installation gap thereof, which includes: the device comprises a lifting column 1, a hydraulic rod 2, a support table 3, a support column 4, a lockable moving wheel 5, a cleaner 6, a mounting seat brush head 7, an electromagnet adsorption seat 8, a sewage inspection well cover 9, a well cover base 10, a water spray hole 11 and a motor 12, wherein two sides of the upper end of the lifting column 1 are fixedly connected with the top end of the hydraulic rod 2 in a welding mode, the lifting column 1 is nested with the central part of the support table 3, the lower end of the hydraulic rod 2 is embedded in the upper surface of the support table 3, the support column 4 is fixedly arranged on two sides of the support table 3, the lockable moving wheel 5 is arranged on the lower end of the support column 4 and is fixedly connected with the lower end of the mounting seat brush head 7 in a nesting mode, the cleaner 6 is arranged on two sides of the lower surface of the support table 3, the support table 3 is movably connected with the cleaner 6, and the tail, the lower extreme of lift post 1 and the upper end that the electro-magnet adsorbs seat 8 are through welded mode fixed connection, the electro-magnet adsorbs the lower surface of seat 8 and is laminated with sewage inspection well lid 9's upper surface mutually, sewage inspection well lid 9's lower surface embedding is installed in the upper surface of well lid base 10, the medial surface in purger 6 is installed in the head end embedding of hole for water spraying 11, the lower extreme embedding of motor 12 is installed in the left side top of brace table 3.
The supporting table 3 comprises a gear transmission shaft 31, a rotating disc 32, a rotating bearing 33, a working platform 34 and a limiting groove 35, the left side of the lower end of the gear transmission shaft 31 is meshed with the left inner side of the rotating disc 32, the inner side face of the rotating disc 32 is attached to the outer side face of the rotating bearing 33 and is of the same axis, the rotating disc 32 is embedded in the working platform 34, the rotating bearing 33 is embedded in the working platform 34, and the rotating disc 32 and the limiting groove 35 are of an integrated structure.
The brush head 7 of the mounting seat comprises a supporting block 71, a brush seat 72 and a cleaning brush head 73, the right side of the lower end of the supporting block 71 is fixedly connected with the left side of the brush seat 72 in a welding mode, and the front surface of the brush seat 72 is connected with the back surface of the cleaning brush head 73 in a nesting mode.
The cleaning brush head 73 comprises a three-head scraping block 731, bristles 732 and a brush head 733, the head end of the three-head scraping block 731 and the head end of the bristles 732 are positioned on the same plane, the head end of the three-head scraping block 731 is fixedly connected with the right side of the brush head 733, and the head end of the bristles 732 is embedded and installed on the right side of the brush head 733.
The piece 731 is scraped to three that the washing brush head 73 surface differs with three most advanced length, and when the clearance well lid, the most advanced of different length has better processing to the well lid surface, scrapes the comparatively coarse part in surface with the short head earlier, is utilizing long head to go deep into the clearance and scrapes surperficial dust impurity, compares that prior art's square piece of scraping has better clean effect to clearance depths.
The surface of the cleaning brush head 73 is attached with a plurality of three-head scraping blocks 731 and bristles 732, the three-head scraping blocks 731 and the bristles 732 are used for alternately cleaning dust, sand and stone on the surface of the well lid, and the gaps between the three-head scraping blocks 731 and the bristles 732 are used for effectively conveying the dust, sand and stone, so that the dust, sand and stone cannot be retained on the surface of the well lid.
The cleaning brush head 73 adopts an arc-shaped style, has stronger cleaning capacity compared with a square brush head in the prior art, has a tip brush head penetrating into a right-angle part in the deep part of the mounting seat more through the shape of a hyperboloid, can brush up the sand and stone impurities accumulated in the right-angle part, and utilizes centrifugal force to throw the sand and stone impurities out of the mounting seat through the radian of the brush head in high rotation, thereby having powerful cleaning effect.
The upper surface of the rotating disk 32 is provided with a groove ring, compared with the existing plane rotating disk, the rotating disk has a more stable rotating effect, and the groove ring is nested with the bulge part position in the supporting platform 3, so that the rotating disk 32 rotates more stably under the limitation of the bulge part when rotating, and stable rotating force is provided for the cleaner 6.
The working principle is as follows: when the sewage inspection well cover is cleaned, the cleaning machine is firstly moved to the well cover, the lockable moving wheel 5 is locked to aim at the well cover, the hydraulic rod 2 is contracted, the lifting column 1 is made to descend to make the electromagnet adsorption seat 8 attached to the sewage inspection well cover 9, the power supply is started to adsorb the electromagnet adsorption seat, the support column 4 is raised, the received and placed cleaning machine 6 is put down to make the water spraying hole 11 aim at the well cover, the mounting seat brush head 7 is put down at the same time, the brush head is attached to the inner side surface of the well cover base 10, the motor 12 is started, the motor 12 drives the gear transmission shaft 31 to make the rotary disk 32 stably rotate in the support table 3 to provide rotating force for the cleaning machine 6 to spray water around the sewage inspection well cover 9, the well cover is cleaned efficiently, the mounting seat brush head 7 is difficult to be attached to the inner side of the well cover base 10 due to the effect of centrifugal force when the cleaning machine 6 rotates, the tip, utilize simultaneously the radian of self to get rid of gravel and sand impurity to around, prevent that gravel and sand impurity from dropping on well lid base 10 once more, the purger 6 rotatory after several rings alright with well lid and mount pad thoroughly clean, effectively prevent remaining of gravel and sand impurity, make the stationary plane between well lid and the mount pad more laminate, prevent that the pungent gas that sewage produced from floating out to resident's life production influence on every side from the clearance between the stationary plane.
Has the advantages that: when the well lid is cleaned, the cleaner 6 and the mounting seat brush head 7 are driven to clean the sewage inspection well lid by utilizing the rotation of the rotating disk 32, so that the sewage inspection well lid has a faster cleaning speed, the cleaning speed is matched with the shape of the cleaner 6 similar to the edge of the well lid, the water spray holes 11 can fully and uniformly spray the mounting fixed part of the well lid, the edge part of the well lid is thoroughly cleaned, when the sewage inspection well lid is cleaned, the rotating force of the cleaning well lid is utilized to drive the mounting seat brush head 7 to brush on the mounting seat, the centrifugal force generated by rotation is utilized to enable the mounting seat brush head 7 to be more attached to the inner side surface of the mounting seat, then the radian of the mounting seat brush head 7 is utilized to clean sand and stone impurities in a fixed right angle on the mounting seat, the surface is more attached when the sewage inspection well lid is cleaned and mounted, the mounting gap has better sealing performance, and rising pungent gas is prevented from floating when sewage is supplied and drained, has influence on the life of the surrounding residents.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims appended hereto.
Claims (3)
1. The utility model provides a sewage inspection well lid for water supply and drainage facility and installation clearance cleaning machine thereof, its structure includes: lifting column (1), hydraulic stem (2), brace table (3), support post (4), lockable remove wheel (5), purger (6), mount pad brush head (7), electro-magnet adsorb seat (8), sewage inspection well lid (9), well lid base (10), hole for water spraying (11), motor (12), its characterized in that: the upper end of the lifting column (1) is fixedly connected with the top end of the hydraulic rod (2) in a welding mode, the lifting column (1) is nested with the central part of the support table (3), the lower end of the hydraulic rod (2) is embedded in the upper surface of the support table (3), support columns (4) are fixedly mounted on two sides of the support table (3), lockable moving wheels (5) are mounted on the lower ends of the support columns (4) and are fixedly connected in the nesting mode, washers (6) are mounted on two sides of the lower surface of the support table (3), the support table (3) is movably connected with the washers (6), the tail end of each washer (6) is hinged with the head end of a brush head (7) of the mounting seat, the lower end of the lifting column (1) is fixedly connected with the upper end of an electromagnet adsorption seat (8) in a welding mode, and the lower surface of the electromagnet adsorption seat (8) is attached to the upper surface of a sewage inspection well cover (9), the lower surface of the sewage inspection well cover (9) is embedded in the upper surface of the well cover base (10), the head end of the water spraying hole (11) is embedded in the inner side surface of the cleaner (6), and the lower end of the motor (12) is embedded in the upper left side of the support table (3); support table (3) are including gear drive shaft (31), rotary disk (32), swivel bearing (33), work platform (34), spacing recess (35), the lower extreme left side of gear drive shaft (31) meshes with the left side inboard of rotary disk (32) mutually, the medial surface of rotary disk (32) laminates and same axis with the lateral surface of swivel bearing (33) mutually, the inside in work platform (34) is installed in rotary disk (32) embedding, swivel bearing (33) embedding is installed in the inside of work platform (34), rotary disk (32) and spacing recess (35) structure as an organic whole.
2. The sewage inspection well cover for water supply and drainage facilities and the cleaning machine for the installation clearance thereof according to claim 1 are characterized in that: the brush head (7) of the mounting seat comprises a supporting block (71), a brush seat (72) and a cleaning brush head (73), the right side of the lower end of the supporting block (71) is fixedly connected with the left side of the brush seat (72) in a welding mode, and the front surface of the brush seat (72) is connected with the back surface of the cleaning brush head (73) in a nesting mode.
3. The sewage inspection well cover for water supply and drainage facilities and the cleaning machine for the installation clearance thereof according to claim 2 are characterized in that: the cleaning brush head (73) comprises a three-head scraping block (731), bristles (732) and a brush head (733), the head end of the three-head scraping block (731) and the head end of the bristles (732) are located on the same plane, the head end of the three-head scraping block (731) is fixedly connected with the right side of the brush head (733), and the head end of the bristles (732) is embedded and installed on the right side of the brush head (733).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252201.5A CN109317446B (en) | 2018-10-25 | 2018-10-25 | Sewage inspection well cover for water supply and drainage facilities and installation clearance cleaning machine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252201.5A CN109317446B (en) | 2018-10-25 | 2018-10-25 | Sewage inspection well cover for water supply and drainage facilities and installation clearance cleaning machine thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109317446A CN109317446A (en) | 2019-02-12 |
| CN109317446B true CN109317446B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811252201.5A Active CN109317446B (en) | 2018-10-25 | 2018-10-25 | Sewage inspection well cover for water supply and drainage facilities and installation clearance cleaning machine thereof |
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| CN (1) | CN109317446B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109835683B (en) * | 2019-03-25 | 2024-03-15 | 东风设计研究院有限公司 | Automatic cleaning device for combined trolley track of sliding plate |
| CN111482396A (en) * | 2020-04-13 | 2020-08-04 | 国网山东省电力公司禹城市供电公司 | Electric power inspection well cleaning device |
| CN111501983B (en) * | 2020-04-13 | 2021-06-22 | 无锡天工建设有限公司 | Sludge cleaning device for urban underground pipe well |
| CN111441464B (en) * | 2020-04-13 | 2021-05-28 | 江苏惠生流体设备有限公司 | Sewage pipeline well cover-lifting and sewage-cleaning integrated device |
| CN112249892B (en) * | 2020-12-22 | 2021-02-26 | 烟台工程职业技术学院(烟台市技师学院) | Automatic well lid dismounting robot for municipal works |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205438529U (en) * | 2016-04-01 | 2016-08-10 | 山东国兴智能科技有限公司 | Intelligent robot is maintained to full -automatic well lid |
| CN105839569B (en) * | 2016-04-01 | 2017-08-11 | 山东国兴智能科技有限公司 | Intelligent robot cleaning, installation and recovery cell or the method for town road well lid |
| CN107503377A (en) * | 2017-08-26 | 2017-12-22 | 俞樑兵 | A kind of municipal water supply pumping equipment assembles and disassembles cleaning all-in-one with sewage inspection well lid |
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2018
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Effective date of registration: 20200813 Address after: Room 702, block 7, Sanshan science and technology innovation center, 12 Ganggang Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province Applicant after: GUANGDONG MEBAO ENVIRONMENT TECHNOLOGY Co.,Ltd. Address before: 510600 Guangdong Guangzhou Yuexiu District Zhongshan Road 57, twenty-seven floors 2705 rooms. Applicant before: GUANGZHOU BOHAO SURVEY TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A sewage inspection well cover for water supply and drainage facilities and its installation gap cleaning machine Effective date of registration: 20220629 Granted publication date: 20200908 Pledgee: Industrial and Commercial Bank of China Limited Foshan Pingzhou sub branch Pledgor: GUANGDONG MEBAO ENVIRONMENT TECHNOLOGY Co.,Ltd. Registration number: Y2022980009224 |
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