CN112302152A - Pipeline dredging device is used in construction of wisdom city - Google Patents
Pipeline dredging device is used in construction of wisdom city Download PDFInfo
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- CN112302152A CN112302152A CN202011239426.4A CN202011239426A CN112302152A CN 112302152 A CN112302152 A CN 112302152A CN 202011239426 A CN202011239426 A CN 202011239426A CN 112302152 A CN112302152 A CN 112302152A
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- rotating rod
- fixedly connected
- cavity
- rotating
- bevel gear
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
- E03F9/005—Apparatus for simultaneously pushing and rotating a cleaning device carried by the leading end of a cable or an assembly of rods
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a pipeline dredging device for smart city construction, which comprises a shell, wherein a rotating cavity is arranged in the shell, a motor is arranged above the shell, a first rotating rod is vertically arranged in the shell, the tail end of an output shaft of the motor extends into the rotating cavity and is fixedly connected with the upper end of the first rotating rod, the lower end of the first rotating rod is fixedly connected with an incomplete bevel gear and a trigger mechanism, the trigger mechanism comprises a second rotating rod horizontally arranged in the rotating cavity, and the left end of the second rotating rod is fixedly connected with a first bevel gear matched with the incomplete bevel gear. This device only needs a high-power device of motor, and centrifugal force when rotating through the motor drives first hollow core plate and gets rid of the silt on the pipeline inner wall to control about driving a plurality of first hollow core plates, improve the effect of getting rid of silt, still jet-propelled silt through a plurality of ventholes on the first hollow core plate, make silt get rid of the effect better.
Description
Technical Field
The invention relates to the field of pipeline dredging, in particular to a pipeline dredging device for smart city construction.
Background
Pipeline dredging is to dredge the pipeline, clear up the silt in the pipeline, keep unblocked for a long time to prevent the waterlogging from taking place in the city, and pipeline dredging work is the important work that drainage department is not neglected, to pipeline dredging, has the following problem:
at present municipal administration sewer pipe adopts the manual work to draw the excavation mostly, its intensity of labour is great, and the silt of some pipelines is artifical difficult to draw the excavation after depositing, the artifical efficiency of drawing the excavation is also low relatively, traditional dredging device can use multiple high-power device, still consume the electric energy in the time of the troublesome poeration, and current dredging device can't be to the pipeline of different pipe diameters, before carrying out different pipeline desilting, still need install different desilting swivel head, it is very troublesome to use, how to solve these problems we need to consider.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a pipeline dredging device for smart city construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pipeline dredging device for smart city construction comprises a shell, wherein a rotating cavity is formed in the shell, a motor is mounted above the shell, a first rotating rod is vertically arranged in the shell, the tail end of an output shaft of the motor extends into the rotating cavity and is fixedly connected with the upper end of the first rotating rod, and the lower end of the first rotating rod is fixedly connected with an incomplete bevel gear;
the trigger mechanism comprises a second rotating rod horizontally arranged in a rotating cavity, the left end of the second rotating rod is fixedly connected with a first bevel gear matched with an incomplete bevel gear, the right end of the second rotating rod penetrates through the inner wall of the right side of the rotating cavity and is fixedly connected with two sleeves, two guide grooves are formed in the inner walls of the two sleeves, guide blocks used for moving left and right are arranged in the guide grooves, and the guide blocks are fixedly connected with the second rotating rod;
telescopic machanism, telescopic machanism includes a plurality of fixed sticks of fixed connection on two sleeves respectively, and is a plurality of all be equipped with in the fixed stick and remove the chamber, it is a plurality of remove the equal level in chamber and be equipped with the piston board that is used for reciprocating, it is a plurality of the piston board all is through first spring elastic connection with one side inner wall that corresponding removal chamber is close to the second bull stick, and is a plurality of the equal fixedly connected with connecting strip of one end that the second bull stick was kept away from to the piston board is a plurality of the one end that the second bull stick was kept away from to the connecting strip all runs through one side inner wall that corresponding removal chamber kept away from the second bull stick to the first hollow slab of fixedly connected.
Preferably, the magnetic bearing further comprises a moving mechanism, the moving mechanism comprises a plurality of fixed blocks fixedly connected to the two sleeves respectively, centrifugal cavities are formed in the plurality of fixed blocks, iron balls used for moving are arranged in the plurality of centrifugal cavities, first magnetic rings are sleeved at the back ends of the two sleeves, and two second magnetic rings which are repellent to the same magnetic poles of the corresponding first magnetic rings are sleeved on the second rotating rod respectively.
Preferably, still include air injection mechanism, air injection mechanism includes that the level sets up the folding gasbag on the second bull stick, the both ends of folding gasbag respectively with two telescopic adjacent end fixed connection, a plurality of air inlets have been seted up on the folding gasbag, it is a plurality of all be equipped with the chamber of ventilating in the connecting strip, it is a plurality of the opening that communicates with removal chamber is all seted up to the one end that the chamber of ventilating is close to the second bull stick, it is a plurality of the one end and the corresponding first hollow plate intercommunication of keeping away from the second bull stick in the chamber of ventilating is a plurality of all set up the bleeder vent with external intercommunication on the left and right sides inner wall of first hollow plate, folding gasbag all communicates through the outlet duct with a plurality of removal chambers, and is a plurality of all be equipped with the check valve on outlet duct and a plurality of air inlet.
Preferably, it is equipped with the slide to rotate the intracavity level, slide and the inner wall sliding connection who rotates the chamber, the slide passes through two second spring elastic connection with the interior bottom that rotates the chamber, the second bull stick is located the partial fixedly connected with and the slide matched with cam that rotate the intracavity, be equipped with the drain pipe in the second bull stick, the left end and the rotation chamber intercommunication of drain pipe are located leftwards the cover is equipped with the hollow board of annular on the sleeve, set up a plurality of inlet ports with external intercommunication on the outer inner wall of the hollow board of annular, the right-hand member and the hollow board intercommunication of annular of drain pipe, the left side inner wall intercommunication that rotates the chamber has the feed liquor pipe, all be equipped with the check valve on feed liquor pipe and the drain pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. be provided with telescopic machanism, through the effect of centrifugal force for a plurality of piston boards remove to keeping away from telescopic direction, and a plurality of piston boards pass through the connecting strip and drive a plurality of first hollow core slabs and remove to keeping away from telescopic direction, make a plurality of first hollow core slabs and pipeline inner wall contact, and scrape the pipeline inner wall and move, get rid of silt.
2. Be provided with air injection mechanism, through folding gasbag compression, the intracavity of ventilating is got into through a plurality of outlet ducts with the gas in the folding gasbag, reentries first hollow core plate in, spouts gas through a plurality of ventholes on the first hollow core plate to the silt on the pipe wall for silt on the pipe wall is blown away, makes the get rid of effect of silt better.
3. Spraying of cleaning agent is carried out to the pipe wall through a plurality of ventholes on the annular hollow plate, cooperatees with first hollow plate for silt on the pipe wall is scraped off more easily, and can make the cleaner of pipe hanging, makes silt get rid of the effect better.
Drawings
FIG. 1 is a schematic structural diagram of a pipe dredging device for smart city construction according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a cross-sectional view of the second rotary rod and sleeve of FIG. 1;
FIG. 4 is a force analysis diagram of the iron ball of FIG. 1;
fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure: the device comprises a shell 1, a motor 2, a rotating cavity 3, a first rotating rod 4, an incomplete bevel gear 5, a first bevel gear 6, a second rotating rod 7, a sleeve 8, a first magnetic ring 9, a second magnetic ring 10, a fixed block 11, a centrifugal cavity 12, an iron ball 13, a folding air bag 14, a fixed rod 15, a moving cavity 16, a piston plate 17, a first spring 18, a connecting strip 19, a ventilation cavity 20, a sealing ring 21, a first hollow plate 22, a gas outlet pipe 23, a guide block 24, a guide groove 25, a cam 26, a sliding plate 27, a second spring 28, a liquid inlet pipe 29, a liquid outlet pipe 30 and an annular hollow plate 31.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, the pipeline dredging device for smart city construction comprises a shell 1, wherein a rotating cavity 3 is arranged in the shell 1, a motor 2 is arranged above the shell 1, a first rotating rod 4 is vertically arranged in the shell 1, the tail end of an output shaft of the motor 2 extends into the rotating cavity 3 and is fixedly connected with the upper end of the first rotating rod 4, and the lower end of the first rotating rod 4 is fixedly connected with an incomplete bevel gear 5;
the trigger mechanism comprises a second rotating rod 7 horizontally arranged in the rotating cavity 3, the left end of the second rotating rod 7 is fixedly connected with a first bevel gear 6 matched with an incomplete bevel gear 5, when the incomplete bevel gear 5 is meshed with the first bevel gear 6, the incomplete bevel gear 5 drives the first bevel gear 6 to rotate, when the incomplete bevel gear 5 is not meshed with the first bevel gear 6, the incomplete bevel gear 5 does not drive the first bevel gear 6 to rotate, the right end of the second rotating rod 7 penetrates through the inner wall of the right side of the rotating cavity 3 and is fixedly connected with two sleeves 8, two guide grooves 25 are formed in the inner walls of the two sleeves 8, guide blocks 24 used for moving left and right are arranged in the guide grooves 25, and the guide blocks 24 are fixedly connected with the second rotating rod 7;
the telescopic mechanism comprises a plurality of fixed rods 15 which are respectively fixedly connected on two sleeves 8, a moving cavity 16 is arranged in each fixed rod 15, piston plates 17 for moving up and down are horizontally arranged in each moving cavity 16, the inner walls of one sides, close to the second rotating rod 7, of the plurality of piston plates 17 and the corresponding moving cavities 16 are elastically connected through a first spring 18, one ends, far away from the second rotating rod 7, of the plurality of piston plates 17 are fixedly connected with connecting strips 19, one ends, far away from the second rotating rod 7, of the plurality of connecting strips 19 penetrate through the inner wall of one side, far away from the second rotating rod 7, of the corresponding moving cavities 16, and is fixedly connected with a first hollow plate 22, the plurality of piston plates 17 drive the plurality of first hollow plates 22 to move towards the direction far away from the sleeve 8 through the connecting strips 19, the plurality of first hollow plates 22 are brought into contact with the inner wall of the pipe and scrape the inner wall of the pipe to remove sludge.
The magnetic suspension device further comprises a moving mechanism, the moving mechanism comprises a plurality of fixing blocks 11 which are fixedly connected to the two sleeves 8 respectively, the fixing blocks 11 are all arranged in an inclined mode, centrifugal cavities 12 are arranged in the fixing blocks 11, iron balls 13 used for moving are arranged in the centrifugal cavities 12, the back ends of the two sleeves 8 are all sleeved with first magnetic rings 9, the second rotating rod 7 is sleeved with two second magnetic rings 10 which repel each other in the same polarity as the corresponding first magnetic rings 9, and the first magnetic rings 9 and the second magnetic rings 10 are fixedly connected with the second rotating rod 7.
Wherein, the device also comprises an air injection mechanism, the air injection mechanism comprises a folding air bag 14 horizontally arranged on the second rotating rod 7, two ends of the folding air bag 14 are respectively fixedly connected with adjacent ends of the two sleeves 8, the folding air bag 14 is provided with a plurality of air inlets, a plurality of connecting strips 19 are respectively provided with a ventilation cavity 20, one end of the ventilation cavity 20 close to the second rotating rod 7 is provided with an opening communicated with the moving cavity 16, one end of the ventilation cavity 20 far away from the second rotating rod 7 is communicated with a corresponding first hollow plate 22, air holes communicated with the outside are respectively arranged on the inner walls of the left side and the right side of the first hollow plate 22, the folding air bag 14 is communicated with the moving cavities 16 through air outlet pipes 23, the air outlet pipes 23 and the air inlets are respectively provided with a one-way valve, the one-way valves can ensure that the air outlet pipes 23 only supply air, ensure that the air inlet pipes only supply air, and inject air into the sludge on the pipe wall through the air holes on the first hollow plate 22, so that the sludge on the pipe wall is blown away, and the sludge removal effect is better.
When a pipeline needs to be desilted, a motor 2 is turned on, the motor 2 drives a first rotating rod 4 to rotate, the first rotating rod 4 drives an incomplete bevel gear 5 to rotate, when the incomplete bevel gear 5 is meshed with a first bevel gear 6, the first bevel gear 6 drives a second rotating rod 7 to rotate, the second rotating rod 7 drives two sleeves 8 to rotate, the two sleeves 8 drive a plurality of fixing rods 15 fixedly connected with the sleeves to rotate, under the action of centrifugal force, a plurality of piston plates 17 move in a direction far away from the sleeves 8, the plurality of piston plates 17 drive a plurality of first hollow plates 22 to move in a direction far away from the sleeves 8 through connecting strips 19, the plurality of first hollow plates 22 are in contact with the inner wall of the pipeline and scrape the inner wall of the pipeline to remove sludge;
when the incomplete bevel gear 5 is meshed with the first bevel gear 6, the two sleeves 8 are driven to rotate, the two sleeves 8 drive the fixed blocks 11 to rotate, the fixed blocks 11 are all distributed in an inclined mode, under the action of centrifugal force, the iron balls 13 all have an inclined force, stress analysis is carried out on the force (shown in figure 4), the iron balls 13 are decomposed to obtain an upward force and a force far away from the folding air bag 14, the upward force is counteracted with the reaction force of the sleeves 8, namely, the two sleeves 8 are subjected to a force in a separating direction, as the incomplete bevel gear 5 is meshed with the first bevel gear 6, the rotating speed is high, the force in the separating direction is larger than the force of like polarity repulsion of the first magnetic ring 9 and the second magnetic ring 10, the two sleeves 8 are driven to move away from each other, and when the incomplete bevel gear 5 is not meshed with the first bevel gear 6, the force is subjected to inertia, the second rotating rod 7 still rotates, but the rotating speed is reduced, so that the centrifugal force is reduced, the force in the direction of separation is smaller than the force of like poles of the first magnetic ring 9 and the second magnetic ring 10 which repel each other, so that the two sleeves 8 move relatively, namely when the second rotating rod 7 rotates, the two sleeves 8 are driven to move left and right continuously, the two sleeves 8 drive the first hollow plates 22 to move left and right, and the sludge on the tube walls is removed better by the first hollow plates 22;
when two sleeves 8 move away from each other, make folding gasbag 14 expand, under the effect of atmospheric pressure, folding gasbag 14 inhales the air through a plurality of air inlets, when two sleeves 8 move relatively, make folding gasbag 14 compress, gas in folding gasbag 14 gets into in the air cavity 20 through a plurality of outlet duct 23, reentry first hollow plate 22 in, carry out the jet-propelled silt on the pipe wall through a plurality of ventholes on first hollow plate 22, make silt on the pipe wall blown off, make the effect of getting rid of silt better.
Example 2
Referring to fig. 5, the present embodiment is different from embodiment 1 in that a sliding plate 27 is horizontally disposed in the rotation cavity 3, the sliding plate 27 is slidably connected to an inner wall of the rotation cavity 3, the sliding plate 27 is elastically connected to an inner bottom of the rotation cavity 3 through two second springs 28, a portion of the second rotating rod 7 located in the rotation cavity 3 is fixedly connected to a cam 26 matched with the sliding plate 27, under an elastic action of the two second springs 28, the sliding plate 27 abuts against the cam 26, that is, the second rotating rod 7 rotates to drive the sliding plate 27 to move up and down, a liquid outlet pipe 30 is disposed in the second rotating rod 7, a left end of the liquid outlet pipe 30 is communicated with the rotation cavity 3, an annular hollow plate 31 is sleeved on the sleeve 8 located on the left side, a plurality of air inlet holes communicated with the outside are formed on an outer inner wall of the annular hollow plate 31, a right end of the liquid outlet pipe 30 is communicated with the annular hollow plate 31, a left inner wall of the rotation cavity, all be equipped with the check valve on feed liquor pipe 29 and the drain pipe 30, the check valve can ensure 29 feed liquors of feed liquor pipe, ensures that drain pipe 30 only goes out liquid, carries out spraying of cleaner to the pipe wall through a plurality of ventholes on the annular hollow plate 31, cooperatees with first hollow plate 22 for silt on the pipe wall is scraped off more easily, and can make the cleaner of pipe hanging, makes silt get rid of the effect better.
In this embodiment, when the second rotating rod 7 rotates, the second rotating rod 7 drives the cam 26 to rotate, under the elastic action of the two second springs 28, make the sliding plate 27 offset the cam 26, just in time, the second rotating rod 7 can drive the sliding plate 27 to move up and down when rotating, when the sliding plate 27 moves down, inhale the cleaning agent into the upper space of the rotating cavity 3 through the liquid inlet pipe 29, when the sliding plate 27 moves up, under the effect of atmospheric pressure, make the cleaning agent discharge into the annular hollow plate 31 through the liquid outlet pipe 30, a plurality of ventholes on the annular hollow plate 31 of rethread carry out the spraying of cleaning agent to the pipe wall, cooperate with the first hollow plate 22, make silt on the pipe wall more easily scraped, and can make the pipe wall scraped cleaner, make silt get rid of the effect better.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The utility model provides a wisdom is pipeline dredging device for city construction, its characterized in that includes:
the bevel gear mechanism comprises a shell (1), wherein a rotating cavity (3) is arranged in the shell (1), a motor (2) is installed above the shell (1), a first rotating rod (4) is vertically arranged in the shell (1), the tail end of an output shaft of the motor (2) extends into the rotating cavity (3) and is fixedly connected with the upper end of the first rotating rod (4), and an incomplete bevel gear (5) is fixedly connected with the lower end of the first rotating rod (4);
the trigger mechanism comprises a second rotating rod (7) horizontally arranged in the rotating cavity (3), the left end of the second rotating rod (7) is fixedly connected with a first bevel gear (6) matched with the incomplete bevel gear (5), the right end of the second rotating rod (7) penetrates through the inner wall of the right side of the rotating cavity (3) and is fixedly connected with two sleeves (8), two guide grooves (25) are formed in the inner walls of the two sleeves (8), guide blocks (24) used for moving left and right are arranged in the guide grooves (25), and the guide blocks (24) are fixedly connected with the second rotating rod (7);
telescopic machanism, telescopic machanism includes a plurality of fixed rod (15) of fixed connection respectively on two sleeves (8), and is a plurality of all be equipped with in fixed rod (15) and remove chamber (16), and is a plurality of it is equipped with piston board (17) that are used for reciprocating to remove equal level in chamber (16), and is a plurality of piston board (17) all through first spring (18) elastic connection with one side inner wall that second bull stick (7) are close to corresponding removal chamber (16) one end equal fixedly connected with connecting strip (19), a plurality of second bull stick (7) are kept away from in piston board (17) the one end that second bull stick (7) were kept away from in connecting strip (19) all runs through one side inner wall that corresponding removal chamber (16) kept away from second bull stick (7) to the first hollow plate of fixedly connected with (22).
2. The intelligent city pipeline dredging device for construction according to claim 1, further comprising a moving mechanism, wherein the moving mechanism comprises a plurality of fixed blocks (11) fixedly connected to the two sleeves (8), respectively, a centrifugal cavity (12) is arranged in each of the plurality of fixed blocks (11), an iron ball (13) for moving is arranged in each of the plurality of centrifugal cavities (12), the two sleeves (8) are sleeved with first magnetic rings (9) at opposite ends, and the second rotating rod (7) is sleeved with two second magnetic rings (10) which repel each other with the same polarity as the corresponding first magnetic rings (9).
3. The pipe dredging device for smart city construction according to claim 1, further comprising an air injection mechanism, wherein the air injection mechanism comprises a folding air bag (14) horizontally arranged on the second rotating rod (7), two ends of the folding air bag (14) are respectively and fixedly connected with adjacent ends of the two sleeves (8), the folding air bag (14) is provided with a plurality of air inlets, a plurality of connecting strips (19) are respectively provided with an air vent cavity (20), one end of the air vent cavity (20) close to the second rotating rod (7) is respectively provided with an opening communicated with the movable cavity (16), one end of the air vent cavity (20) far away from the second rotating rod (7) is communicated with the corresponding first hollow plate (22), air vents communicated with the outside are respectively arranged on the inner walls of the left side and the right side of the first hollow plate (22), the folding air bag (14) is communicated with the movable cavities (16) through an air outlet pipe (23), and the air outlet pipes (23) and the air inlets are provided with one-way valves.
4. The pipe dredging device for smart city construction according to claim 1, wherein a sliding plate (27) is horizontally arranged in the rotating cavity (3), the sliding plate (27) is slidably connected with the inner wall of the rotating cavity (3), the sliding plate (27) is elastically connected with the inner bottom of the rotating cavity (3) through two second springs (28), a cam (26) matched with the sliding plate (27) is fixedly connected to the part of the second rotating rod (7) located in the rotating cavity (3), a liquid outlet pipe (30) is arranged in the second rotating rod (7), the left end of the liquid outlet pipe (30) is communicated with the rotating cavity (3), an annular hollow plate (31) is sleeved on the sleeve (8) located on the left side, a plurality of air inlet holes communicated with the outside are formed in the inner wall of the annular hollow plate (31), and the right end of the liquid outlet pipe (30) is communicated with the annular hollow plate (31), the inner wall of the left side of the rotating cavity (3) is communicated with a liquid inlet pipe (29), and the liquid inlet pipe (29) and the liquid outlet pipe (30) are both provided with one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011239426.4A CN112302152B (en) | 2020-11-09 | 2020-11-09 | Pipeline dredging device is used in construction of wisdom city |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011239426.4A CN112302152B (en) | 2020-11-09 | 2020-11-09 | Pipeline dredging device is used in construction of wisdom city |
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| CN112302152A true CN112302152A (en) | 2021-02-02 |
| CN112302152B CN112302152B (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011239426.4A Active CN112302152B (en) | 2020-11-09 | 2020-11-09 | Pipeline dredging device is used in construction of wisdom city |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113026927A (en) * | 2021-03-18 | 2021-06-25 | 商秀明 | Road outlet anti-blocking equipment capable of automatically cleaning blockage |
| CN114504847A (en) * | 2021-12-31 | 2022-05-17 | 南京江岛环境科技研究院有限公司 | Sludge discharge equipment for rural sewage treatment |
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| CN111301673A (en) * | 2020-03-04 | 2020-06-19 | 吉林工程技术师范学院 | Six-wing medium-sized unmanned aerial vehicle's rotary device |
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| CN113026927A (en) * | 2021-03-18 | 2021-06-25 | 商秀明 | Road outlet anti-blocking equipment capable of automatically cleaning blockage |
| CN114504847A (en) * | 2021-12-31 | 2022-05-17 | 南京江岛环境科技研究院有限公司 | Sludge discharge equipment for rural sewage treatment |
| CN114504847B (en) * | 2021-12-31 | 2023-09-19 | 南京江岛环境科技研究院有限公司 | Mud discharging equipment for rural sewage treatment |
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| CN112302152B (en) | 2022-05-06 |
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