CN112275738B - Sludge cleaning device for pipeline - Google Patents
Sludge cleaning device for pipeline Download PDFInfo
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- CN112275738B CN112275738B CN202011072211.8A CN202011072211A CN112275738B CN 112275738 B CN112275738 B CN 112275738B CN 202011072211 A CN202011072211 A CN 202011072211A CN 112275738 B CN112275738 B CN 112275738B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
Abstract
The invention discloses a sludge cleaning device for a pipeline, which comprises a rotating shaft and a plurality of sludge removing mechanisms, wherein each sludge removing mechanism comprises a connecting plate, a first sludge scraping plate and a second sludge scraping plate, one side of the second sludge scraping plate, which is far away from the rotating shaft, is fixedly connected with a plurality of sawtooth plates, one side of each sawtooth plate, which is close to the first sludge scraping plate, is fixedly connected with an arc-shaped baffle, an elastic extending column movably extends out of an open slot and is extruded on the arc-shaped baffle, one end of the elastic extending column, which extends out of the open slot, is fixedly connected with a fixed cylinder, one end of the fixed cylinder, which is close to the first sludge scraping plate, is movably connected with a threaded cylinder, an elastic rod is movably connected between the threaded rod and the first sludge scraping plate, and the threaded cylinder is fixedly connected with a plurality of rotating blades. The cleaning effect is further improved.
Description
Technical Field
The invention relates to the technical field of pipeline cleaning, in particular to a sludge cleaning device for a pipeline.
Background
The sewage pipeline is a pipeline for conveying sewage, the sewage contains a large amount of impurities, and sediments such as oil sludge, rust scale and the like are often attached to the inner wall of the sewage pipeline after long-term use, so that the pipeline is blocked and needs to be cleaned regularly. The traditional cleaning mode is manual cleaning, the efficiency is low, and the time consumption is long.
Among the prior art, a pipeline greasy dirt cleaning device of application number "201921042974.0", including mount, operation rocking chair, axis of rotation, movable rod, extension board and scraper etc. rotate through the movable rod for the scraper rotates and scrapes the precipitate of pipeline inner wall in pipeline inner wall.
However, the prior art still has more defects, such as: 1, adopting a scraper to scrape off sediments requires that the scraper is tightly attached to the inner wall of the pipeline, the scraper is greatly abraded, and the scraper needs to be replaced regularly; 2, there can be the clearance unavoidably between scraper and the pipeline inner wall, and the precipitate in the clearance can not be cleared up, and simultaneously when the precipitate was cleared up to the scraper, the precipitate in the clearance can be extruded to the scraper for the precipitate is compacted, brings very big vexation for the clearance.
Disclosure of Invention
The invention aims to provide a sludge cleaning device for a pipeline, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a sludge cleaning device for a pipeline comprises a rotating shaft and a plurality of sludge removing mechanisms, wherein the rotating shaft is fixedly connected with the sludge removing mechanisms through connecting rods;
two water inlet grooves are symmetrically formed in one side, away from the mud scraping plate I, of the sawtooth plate, an open groove is formed in one side, close to the mud scraping plate I, of the sawtooth plate, the water inlet grooves are communicated with the open groove, and two water inlet baffle plates are movably connected to the inner side wall of the open groove;
one end of each water inlet baffle, which is far away from the opening direction of the open slot, is provided with a semi-through slot, one side of each water inlet baffle, which is close to each other, is provided with a moving slot, and a connecting slot is connected between each semi-through slot and each moving slot;
a stop lever movably penetrates through the connecting groove and movably extends into the moving groove, a pulling spring is fixedly connected between one end, close to the semi-through groove, of the stop lever and the side wall of the semi-through groove, a fixed lever movably penetrates through the semi-through groove, one end, extending out of the semi-through groove, of the fixed lever is fixedly connected to the bottom wall of the open groove, and a first elastic rope is fixedly connected between one end, extending into the semi-through groove, of the fixed lever and the stop lever;
a water-stop plate movably penetrates between the two motion grooves and is movably connected with the inner wall of the open groove, the water-stop plate is blocked by a blocking rod, an elastic rope II is fixedly connected to the part, extending into the motion groove, of the water-stop plate, one end, far away from the water-stop plate, of the elastic rope II is fixedly connected to the inner wall, close to the opening direction of the open groove, of the motion groove, and an extrusion spring is fixedly connected between one side, far away from the opening direction of the open groove, of the water-stop plate and the bottom wall of the open groove;
one side of the sawtooth plate close to the first mud scraper is fixedly connected with an arc-shaped baffle, the outlet direction of the arc-shaped baffle is far away from the connecting plate, one end of the water inlet baffle close to the opening direction of the open slot is fixedly connected with a connecting rod, one end of the connecting rod far away from the water inlet baffle is fixedly connected with an elastic extending column, and the elastic extending column movably extends out of the open slot and is extruded on the arc-shaped baffle;
one end of the elastic extending column, which extends out of the open slot, is fixedly connected with a fixed cylinder, the fixed cylinder is positioned between the elastic extending column and the first mud scraper, one end of the fixed cylinder, which is close to the first mud scraper, is movably connected with a threaded cylinder, a threaded rod is movably penetrated in the threaded cylinder, an elastic rod is movably connected between the threaded rod and the first mud scraper, and the threaded cylinder is fixedly connected with a plurality of rotating blades;
the elasticity stretches out that the post is inside to be seted up into water and leads to the groove, it is connected with a plurality of apopores to lead to the groove into water.
Preferably, the length of the first mud scraper is greater than the sum of the lengths of the second mud scraper and the serrated plate.
Preferably, the connecting groove is connected to a middle portion of the moving groove.
Preferably, the rotating shaft is driven by a driving motor.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the device, the elastic extending column and the arc-shaped baffle are arranged, the elastic extending column can impact on the sediment on the inner wall of the sewage pipe under the extrusion of water flow to break up the sediment, and the subsequent mud scraper can conveniently scrape the sediment;
2. the device is characterized in that the elastic extending column is provided with the rotating mechanism, the first mud scraper is provided with the elastic rod, and the rotating mechanism is driven to rotate by utilizing the mutual displacement between the elastic extending column and the first mud scraper, so that the rotating blade rotates to break up sediment which is not scraped by the serrated plate, and the subsequent mud scraper can conveniently scrape the sediment;
3. this device is seted up into water and is led to groove and apopore on the elasticity stretches out the post, utilizes the water-stop sheet to extrude water and lead to the groove and flow through the apopore that intakes, and water impact and moist precipitate for the sediment is scraped to change of a mud scraping board.
The sludge cleaning device for the pipeline provided by the invention realizes the step-by-step cleaning of the sediment on the inner wall of the sewage pipe, firstly scrapes part of the sediment by using the serrated plate, then scatters the un-scraped sediment by using the elastic extending column and the rotating mechanism, then extrudes water into the water inlet through groove by using the water-stop plate and flows out through the water outlet hole, water flow impacts and wets the sediment, the difficulty in cleaning the sediment is further reduced, and finally the sediment is scraped by using the mud scraping plate.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a mud removal mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of section A in FIG. 2;
FIG. 4 is an enlarged view of the structure of the area B in FIG. 2;
FIG. 5 is a schematic view of the mud removal mechanism of the present invention with the intake trough blocked;
FIG. 6 is an enlarged view of the structure of the area C in FIG. 5;
FIG. 7 is an enlarged view of the structure of region D in FIG. 5;
fig. 8 is a schematic view of the arrangement of the water-stop plate in the open slot.
In the figure: 1 axis of rotation, 2 even boards, 3 mud scrapers one, 4 mud scrapers two, 5 serration plates, 51 intake chamber, 52 open slots, 6 baffle of intaking, 61 semi-through groove, 62 motion grooves, 63 spread groove, 64 pin, 65 pulling spring, 66 elasticity rope one, 7 dead levers, 8 water-stop sheets, 9 elasticity rope two, 10 extrusion spring, 11 arc-shaped baffle, 12 connecting rods, 13 elasticity stretches out the post, 131 logical groove of intaking, 132 apopore, 14 fixed section of thick bamboo, 15 threaded cylinder, 16 threaded rod, 17 elastic rod, 18 rotating vane, 19 connecting rods, 20 sewage pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution:
a sludge cleaning device for a pipeline comprises a rotating shaft 1 and a plurality of sludge removing mechanisms, wherein the rotating shaft 1 is fixedly connected with the sludge removing mechanisms through a connecting rod 19, the rotating shaft 1 rotates to drive the sludge removing mechanisms to rotate through the connecting rod 19, each sludge removing mechanism comprises a connecting plate 2, a first sludge scraper 3 and a second sludge scraper 4, one end, far away from the rotating shaft 1, of each connecting rod 19 is fixedly connected to the corresponding connecting plate 2, the first sludge scraper 3 and the second sludge scraper 4 are respectively and fixedly connected to two sides of the corresponding connecting plate 2, the connecting rod 19 is located between the first sludge scraper 3 and the second sludge scraper 4, one side, far away from the rotating shaft 1, of the second sludge scraper 4 is fixedly connected with a plurality of serrated plates 5, the serrated plates 5 rotate to scrape partial precipitates in the inner wall of a sewage pipe 20 and impact and flush the un-scraped precipitates, so that the precipitates are loosened, and the first sludge scraper 3 rotates to scrape the precipitates not scraped by the serrated plates 5;
when the serrated plate 5 rotates, water in the sewage pipe 20 enters the open slot 52 through the water inlet slot 51 and is extruded on the water stop plate 8, so that the extrusion spring 10 is compressed, the water is continuously fed to extrude the elastic extension column 13, the elastic extension column 13 moves towards the opening direction of the open slot 52, two water inlet baffles 6 are movably connected to the inner side wall of the open slot 52, the elastic extension column 13 drives the water inlet baffle 6 to move through the connecting rod 12, and the water inlet baffle 6 blocks the water inlet slot 51;
one end of each water inlet baffle 6, which is far away from the opening direction of the open slot 52, is provided with a semi-through slot 61, one side of each water inlet baffle 6, which is close to each other, is provided with a moving slot 62, and a connecting slot 63 is connected between each semi-through slot 61 and each moving slot 62;
a stop lever 64 movably penetrates through the connecting groove 63, the stop lever 64 movably extends into the moving groove 62, a pulling spring 65 is fixedly connected between one end, close to the semi-through groove 61, of the stop lever 64 and the side wall of the semi-through groove 61, a fixing rod 7 movably penetrates through the semi-through groove 61, one end, extending out of the semi-through groove 61, of the fixing rod 7 is fixedly connected to the bottom wall of the open groove 52, an elastic rope I66 is fixedly connected between one end, extending into the semi-through groove 61, of the fixing rod 7 and the stop lever 64, when the water inlet baffle 6 moves towards the direction close to the opening of the open groove 52, the fixing rod 7 is not moved, the elastic rope I66 is stretched, the stop lever 64 moves towards the direction close to the semi-through groove 61, the pulling spring 65 is compressed, and the stop lever 64 leaves the moving groove 62;
a water stop plate 8 penetrates between the two moving grooves 62 movably, the water stop plate 8 is movably connected with the inner wall of the open groove 52, the water stop plate 8 is stopped by a stop rod 64, a part of the water stop plate 8 extending into the moving groove 62 is fixedly connected with an elastic rope II 9, one end of the elastic rope II 9 far away from the water stop plate 8 is fixedly connected to the inner wall of the moving groove 62 close to the opening direction of the open groove 52, the water inlet baffle plate 6 moves towards the opening direction of the open groove 52 to stretch the elastic rope II 9, an extrusion spring 10 is fixedly connected between one side of the water stop plate 8 far away from the opening direction of the open groove 52 and the bottom wall of the open groove 52, when the stop rod 64 leaves the moving groove 62, the water stop plate 8 moves towards the opening direction of the open groove 52 under the action of the elastic rope II 9 and the extrusion spring 10, the water is extruded into the water inlet through groove 131 of the elastic extending column 13 by the water stop plate 8, and the elastic rope I66 is recovered after being stretched, when the elastic rope I66 pulls the stop lever 64 to press the connecting groove 63, so that the water inlet baffle 6 moves towards the direction away from the opening of the open groove 52, the water inlet baffle 6 leaves the water inlet groove 51, water enters the open groove 52 from the water inlet groove 51 again and presses the water stop plate 8, so that the water stop plate 8 moves towards the direction away from the opening of the open groove 52, and when the elastic rope I66 is restored, the stop lever 64 extends into the moving groove 62 again under the action of the pulling spring 65 and stops the water stop plate 8;
one side of the sawtooth plate 5, which is close to the mud scraping plate I3, is fixedly connected with an arc-shaped baffle plate 11, the outlet direction of the arc-shaped baffle plate 11 is far away from the connecting plate 2, one end of the water inlet baffle plate 6, which is close to the opening direction of the open slot 52, is fixedly connected with a connecting rod 12, one end of the connecting rod 12, which is far away from the water inlet baffle plate 6, is fixedly connected with an elastic extending column 13, the elastic extending column 13 movably extends out of the open slot 52 and is extruded on the arc-shaped baffle plate 11, the elastic extending column 13 is turned under the action of the arc-shaped baffle plate 11, so that the elastic extending column 13 moves towards the direction far away from the connecting plate 2 and is knocked on sediments in the sewage pipe 20, and the sediments are shaken off;
the end, extending out of the open slot 52, of the elastic extending column 13 is fixedly connected with a fixed cylinder 14, the fixed cylinder 14 is located between the elastic extending column 13 and the first mud scraper 3, one end, close to the first mud scraper 3, of the fixed cylinder 14 is movably connected with a threaded cylinder 15, a threaded rod 16 movably penetrates through the threaded cylinder 15, an elastic rod 17 is movably connected between the threaded rod 16 and the first mud scraper 3, when the elastic extending column 13 moves towards the direction far away from the connecting plate 2, the threaded cylinder 15 is driven to leave the threaded cylinder 15 through the elastic rod 17, so that the threaded cylinder 15 rotates, the threaded cylinder 15 is fixedly connected with a plurality of rotating blades 18, the rotating blades 18 are driven to rotate through the rotation of the threaded cylinder 15, and the rotating blades 18 rotate to break up sediments which are not scraped by the serrated plate 5, so that the mud scraper 1 can scrape off sediments conveniently;
the elasticity stretches out that post 13 is inside to have seted up logical groove 131 of intaking, and logical groove 131 of intaking is connected with a plurality of apopores 132, and the water in open slot 52 gets into logical groove 131 of intaking and flows out through apopore 132 under the extrusion of water-stop sheet 8, and the water that flows out from apopore 132 strikes and wets the precipitate for mud scraping board 3 is changeed and is scraped the precipitate.
Specifically, the length of the first scraper 3 is greater than the sum of the lengths of the second scraper 4 and the serrated plate 5, so that the serrated plate 5 scrapes shallow sediments, breaks up and flushes deep sediments, and then scrapes all sediments through the first scraper 3.
Specifically, the connecting groove 63 is connected to the middle portion of the moving groove 62 to protect the first elastic string 66 and the second elastic string 9 from being damaged due to excessive elongation.
Specifically, axis of rotation 1 is driven by driving motor, and driving motor provides power and makes axis of rotation 1 rotate, and then drives desilting mechanism and rotate.
The working principle is as follows: the rotating shaft 1 rotates to drive the desilting mechanism to rotate through the connecting rod 19, the serrated plate 5 rotates, water in the sewage pipe 20 enters the open slot 52 through the water inlet groove 51, the water is extruded on the water stop sheet 8, the extrusion spring 10 is compressed, the elastic rope II 9 is stretched, water is continuously fed to extrude the elastic extension column 13, the elastic extension column 13 moves towards the opening direction of the open slot 52, and the elastic extension column 13 drives the water inlet baffle 6 to move towards the direction close to the opening of the open slot 52 through the connecting rod 12;
the elastic extending column 13 is turned under the action of the arc-shaped baffle 11, so that the elastic extending column 13 moves towards the direction far away from the connecting plate 2 and strikes on sediments in the sewage pipe 20, the sediments are shaken up, the elastic rod 17 pulls the threaded column 16 to leave the threaded cylinder 15, the threaded cylinder 15 rotates to drive the rotating blade 18 to rotate, the rotating blade 18 rotates to break up sediments which are not scraped by the serrated plate 5, and the sediments are conveniently scraped by the mud scraping plate 1;
the water inlet baffle 6 moves towards the direction close to the opening of the open slot 52, the fixed rod 7 is not moved, the first elastic rope 66 is stretched, the baffle rod 64 moves towards the direction close to the semi-through slot 61, and the spring 65 is pulled to be compressed;
when the water inlet baffle 6 blocks the water inlet groove 51, the stop rod 64 leaves the moving groove 62, the water stop plate 8 is not blocked by the stop rod 64, the water stop plate 8 moves towards the direction close to the opening of the open groove 52 under the action of the elastic rope II 9 and the extrusion spring 10, and the water stop plate 8 extrudes water into the water inlet through groove 131 of the elastic extension column 13;
the water in the open slot 52 enters the water inlet through slot 131 under the extrusion of the water stop sheet 8 and flows out through the water outlet hole 132, and the water flowing out of the water outlet hole 132 impacts and wets the sediments, so that the sediments are easier to scrape by the first mud scraper 3;
after the elastic rope 66 is elongated, the elastic rope 66 pulls the stop lever 64 to extrude the connecting groove 63, so that the water inlet baffle 6 moves towards the direction far away from the opening of the open groove 52, the water inlet baffle 6 leaves the water inlet groove 51, water enters the open groove 52 from the water inlet groove 51 again and extrudes the water stop plate 8, so that the water stop plate 8 moves towards the direction far away from the opening of the open groove 52, and when the elastic rope 66 is restored, the stop lever 64 stretches into the moving groove 62 again under the action of the pulling spring 65 and blocks the water stop plate 8.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a sludge cleaning device for pipeline, includes axis of rotation (1) and a plurality of desilt mechanism, through connecting rod (19) fixed connection, its characterized in that between axis of rotation (1) and desilt mechanism: the mud removing mechanism comprises a connecting plate (2), a first mud scraper (3) and a second mud scraper (4), one end, far away from the rotating shaft (1), of the connecting rod (19) is fixedly connected to the connecting plate (2), the first mud scraper (3) and the second mud scraper (4) are respectively and fixedly connected to two sides of the connecting plate (2), the connecting rod (19) is located between the first mud scraper (3) and the second mud scraper (4), and one side, far away from the rotating shaft (1), of the second mud scraper (4) is fixedly connected with a plurality of serrated plates (5);
two water inlet grooves (51) are symmetrically formed in one side, away from the mud scraping plate I (3), of the serrated plate (5), an open groove (52) is formed in one side, close to the mud scraping plate I (3), of the serrated plate (5), the water inlet grooves (51) are communicated with the open groove (52), and two water inlet baffles (6) are movably connected to the inner side wall of the open groove (52);
a semi-through groove (61) is formed in one end, away from the opening direction of the open groove (52), of each water inlet baffle plate (6), moving grooves (62) are formed in one sides, close to each other, of the two water inlet baffle plates (6), and a connecting groove (63) is connected between each semi-through groove (61) and each moving groove (62);
a stop lever (64) movably penetrates through the connecting groove (63), the stop lever (64) movably extends into the moving groove (62), a pulling spring (65) is fixedly connected between one end, close to the semi-through groove (61), of the stop lever (64) and the side wall of the semi-through groove (61), a fixing rod (7) movably penetrates through the semi-through groove (61), one end, extending out of the semi-through groove (61), of the fixing rod (7) is fixedly connected to the bottom wall of the open groove (52), and an elastic rope I (66) is fixedly connected between one end, extending into the semi-through groove (61), of the fixing rod (7) and the stop lever (64);
a water stop plate (8) penetrates between the two motion grooves (62) movably, the water stop plate (8) is movably connected with the inner wall of the open groove (52), the water stop plate (8) is blocked by a blocking rod (64), a part of the water stop plate (8) extending into the motion grooves (62) is fixedly connected with an elastic rope II (9), one end, far away from the water stop plate (8), of the elastic rope II (9) is fixedly connected to the inner wall, close to the opening direction of the open groove (52), of the motion groove (62), and an extrusion spring (10) is fixedly connected between one side, far away from the opening direction of the open groove (52), of the water stop plate (8) and the bottom wall of the open groove (52);
one side, close to the mud scraping plate I (3), of the sawtooth plate (5) is fixedly connected with an arc-shaped baffle plate (11), the outlet direction of the arc-shaped baffle plate (11) is far away from the connecting plate (2), one end, close to the opening direction of the open slot (52), of the water inlet baffle plate (6) is fixedly connected with a connecting rod (12), one end, far away from the water inlet baffle plate (6), of the connecting rod (12) is fixedly connected with an elastic extending column (13), and the elastic extending column (13) movably extends out of the open slot (52) and is extruded on the arc-shaped baffle plate (11);
one end, extending out of the open slot (52), of the elastic extending column (13) is fixedly connected with a fixed cylinder (14), the fixed cylinder (14) is located between the elastic extending column (13) and the first mud scraper (3), one end, close to the first mud scraper (3), of the fixed cylinder (14) is movably connected with a threaded cylinder (15), a threaded rod (16) movably penetrates through the threaded cylinder (15), an elastic rod (17) is movably connected between the threaded rod (16) and the first mud scraper (3), and the threaded cylinder (15) is fixedly connected with a plurality of rotating blades (18);
the elastic extending column (13) is internally provided with a water inlet through groove (131), and the water inlet through groove (131) is connected with a plurality of water outlet holes (132).
2. The sludge cleaning apparatus for a pipeline according to claim 1, wherein: the length of the first mud scraping plate (3) is greater than the sum of the lengths of the second mud scraping plate (4) and the serrated plate (5).
3. The sludge cleaning apparatus for a pipeline according to claim 1, wherein: the connecting groove (63) is connected to the middle part of the moving groove (62).
4. The sludge cleaning apparatus for a pipeline according to claim 1, wherein: the rotating shaft (1) is driven by a driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072211.8A CN112275738B (en) | 2020-10-09 | 2020-10-09 | Sludge cleaning device for pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072211.8A CN112275738B (en) | 2020-10-09 | 2020-10-09 | Sludge cleaning device for pipeline |
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| CN112275738A CN112275738A (en) | 2021-01-29 |
| CN112275738B true CN112275738B (en) | 2022-01-11 |
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| CN113883357B (en) * | 2021-10-14 | 2023-05-16 | 洪江市盛翔牧业有限责任公司 | Sewage conveying pipeline |
| CN116335262B (en) * | 2023-04-03 | 2023-08-08 | 临沂市环境保护科学研究所有限公司 | Industrial wastewater blow-down pipeline sludge treatment device |
| CN116334643B (en) * | 2023-04-13 | 2023-09-12 | 金惠伦管道科技(山东)有限公司 | Corrosion-resistant treatment device for inner wall of carbon steel elbow |
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| KR100805853B1 (en) * | 2006-12-18 | 2008-02-27 | 신우씨앤엠솔루션(주) | Apparatus for cleaning pipe |
| CN205797927U (en) * | 2016-07-08 | 2016-12-14 | 天津亨旺机械有限公司 | Petroleum pipeline cleaning and dredging device |
| CN209577641U (en) * | 2019-01-07 | 2019-11-05 | 王余波 | A kind of gathering line apparatus for eliminating sludge |
| CN209753583U (en) * | 2019-03-22 | 2019-12-10 | 广州市诚利建设工程有限公司 | Sewage draining pipeline |
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