CN111940434A - Cleaning device for inside oil cake of pipeline - Google Patents
Cleaning device for inside oil cake of pipeline Download PDFInfo
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- CN111940434A CN111940434A CN202010598312.2A CN202010598312A CN111940434A CN 111940434 A CN111940434 A CN 111940434A CN 202010598312 A CN202010598312 A CN 202010598312A CN 111940434 A CN111940434 A CN 111940434A
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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
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/0535—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning device being restricted in its movement by a cable or the like
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- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cleaning device for oil blocks in a pipeline, which comprises a pipeline group, wherein the outer wall of one end of the pipeline group is movably connected with a power part, and the other end of the pipeline group is connected with a water pump, a computer and a power supply. The invention can be operated under visual conditions, can achieve accurate operations such as accurate searching, dredging, repairing and the like, saves the energy of workers, saves resources and reduces loss. Avoiding pipeline damage to the maximum extent, prolonging the service life of the pipeline and the like. The heating part at the front end of the oil cleaning device melts the oil blocks through the electric heating wire, and the nozzles spray chemical agents at the front and the back to prevent the oil blocks from being condensed, so that the effect of cleaning pipelines is achieved, meanwhile, the multifunctional oil cleaning device can replace multifunctional parts, and under special conditions, certain specified functions are achieved. If a magnetic suction head can be added, the object can be searched and fished in the pipeline.
Description
Technical Field
The invention belongs to the technical field of household cleaning, and relates to a cleaning device for an oil block in a pipeline.
Background
In daily life, special occasions often exist, situations in pipelines need to be known, for example, the pipelines are not known to be blocked due to any reason, the traditional tools are operated blindly when the pipelines work, meanwhile, only violent operation can be carried out in the operation process, the defects that the pipelines are not cleaned cleanly, blind spots and dead corners are easy to remain, and the pipelines are possibly damaged by violent operation. Meanwhile, oil blocks in the pipeline are always a big problem of pipeline cleaning, the oil blocks are difficult to melt in the traditional cleaning mode, and the oil blocks can be solidified quickly even if the oil blocks are melted. The present invention is designed to solve these problems.
Disclosure of Invention
The invention aims to provide a cleaning device for oil blocks in a pipeline, which solves the problem that the oil blocks in the pipeline are difficult to melt in the traditional cleaning mode in the prior art.
The invention adopts the technical scheme that the device for cleaning the oil cake in the pipeline comprises a pipeline group, wherein the outer wall of one end of the pipeline group is movably connected with a power part, and the other end of the pipeline group is connected with a water pump, a computer and a power supply.
The invention is also characterized in that:
the pipeline group comprises a hard casing, a soft casing is embedded in the hard casing, a core function pipe is embedded in the soft casing, the soft casing extends out of the hard casing, the core function pipe extends out of the soft casing, the hard casing is movably connected with the power part, and the core function pipe is connected with a water pump, a computer and a power supply.
The axial of core function pipe is provided with medicament passageway and cable passageway, be provided with wire and video connecting wire in the cable passageway, the medicament passageway passes through pipe intercommunication water pump, the medicament passageway extends to the export of embedded in hard sheathed tube core function pipe tip for the front end spout, the medicament passageway extends has three medicament spray tube, each interval 120 of three medicament spray tube direction, embedded in hard sheathed tube core function pipe tip is provided with visual function spare, visual function spare passes through cable passageway internal conductor and video connecting wire connected power and computer.
The visual function piece is including camera and LED banks, and the camera is embedded at core function tube end portion with the LED banks, and the LED banks arranges around the camera, and the camera border is provided with the windshield wiper, and the camera passes through the video connecting wire and connects the computer.
The power portion is including rotating blade portion, and rotating blade portion both ends rigid coupling respectively has heating portion and spouts medicine portion, and the one end tip of water pump is kept away from at rotating blade portion to heating portion rigid coupling, spouts medicine portion rigid coupling and is close to the one end tip of water pump at rotating blade portion, and heating portion, rotating blade portion and spout medicine portion rigid coupling are provided with the motor assembly between hard sheathed tube outer wall, spout medicine portion and rotating blade portion, and hard sleeve pipe runs through whole power portion, and heating portion, rotating blade portion and spout medicine portion combination formula fusiformis structure.
The rotary vane part comprises a rotary vane part shell, the rotary vane part shell is of a cylindrical tube structure, a spiral rotary vane is arranged on the outer wall of the rotary vane part shell, bearings are fixedly connected to the inner walls of the two ends of the rotary vane part shell, the bearings are sleeved on the outer wall of a rigid sleeve, the heating part is fixedly connected to one end portion, away from the water pump, of the rotary vane part shell, and the medicine spraying part is fixedly connected to one end portion, close to the water pump, of the rotary vane part shell.
The heating portion is including the heating portion shell, and the heating portion shell is bullet shape structure, and heating portion shell end portion is opened there is the round hole, the embedded core function pipe of round hole, the inside heating wire that is provided with of heating portion shell, heating portion shell and spiral leaf portion rigid coupling, the heating wire rigid coupling is at hard sheathed tube outer wall, the one end tip that the water pump was kept away from at spiral leaf portion to heating portion shell rigid coupling.
Spout medicine portion including spouting medicine portion shell, spout medicine portion shell and be the dome shape structure, spout medicine portion shell rigid coupling at hard sheathed tube outer wall, spout medicine portion shell outer wall and be provided with the medicament spout, the medicament spray tube passes the medicament spout to spouting medicine portion shell outside, spouts the one end tip that medicine portion shell rigid coupling is close to the water pump at rotary vane portion shell.
The motor group is including the motor mounting, and motor mounting rigid coupling is provided with the motor in the outer wall of rigid sleeve pipe, and the side that the motor mounting is close to the vane portion shell is provided with the motor, and the axle sleeve of motor is equipped with the gear, and the inner wall of vane portion shell is provided with rack cooperation gear work, and the motor passes through wire connection power in the cable passageway.
An electric heating wire shell is arranged between the heating part shell and the electric heating wire, the outer wall of the electric heating wire shell is connected with the inner wall of the heating part shell, and the electric heating wire shell is fixedly connected with the outer wall of the rigid sleeve.
The invention has the beneficial effects that:
1. the invention can be operated under visual conditions, can achieve accurate operations such as accurate searching, dredging, repairing and the like, saves the energy of workers, saves resources and reduces loss. Avoiding pipeline damage to the maximum extent, prolonging the service life of the pipeline and the like.
2. The heating part at the front end of the oil cleaning device melts the oil blocks through the electric heating wire, and the nozzles spray chemical agents at the front and the back to prevent the oil blocks from being condensed, so that the effect of cleaning pipelines is achieved, meanwhile, the multifunctional oil cleaning device can replace multifunctional parts, and under special conditions, certain specified functions are achieved. If a magnetic suction head can be added, the object can be searched and fished in the pipeline. If the GPS function is added, workers can survey places which are inconvenient to survey or difficult to survey on the ground.
3. The invention can also enlarge and reduce the power part according to the actual situation. Should be used in other respects. The inspection, cleaning, repairing, positioning and the like are carried out when the device enters a closed space (such as a boiler, a pre-laid pipeline and the like) which is inconvenient or incapable of being entered by people.
Drawings
FIG. 1 is a schematic structural diagram of a cleaning device for oil cake in the interior of a pipeline according to the present invention;
FIG. 2 is a schematic view of a structure of a visual functional part of the cleaning device for the oil cake in the pipeline;
FIG. 3 is a schematic diagram of the power part of the cleaning device for the oil cake in the pipeline according to the present invention;
FIG. 4 is a video cable arrangement of an apparatus for cleaning oil cake inside a pipeline according to the present invention;
FIG. 5 is a wire arrangement diagram of a cleaning device for oil cake inside a pipeline according to the present invention;
FIG. 6 is a structural view of a first cleaning device for oil cake in the inside of pipeline provided with a multifunctional replacement pipe;
FIG. 7 is a structural view of a second cleaning device for oil cake in the inside of pipeline provided with a multifunctional replacement pipe according to the present invention;
FIG. 8 is a structural view of a third cleaning device for oil cake in the inside of pipeline provided with a multifunctional replacement pipe according to the present invention;
FIG. 9 is a fourth structure diagram of the cleaning device for the oil cake in the pipeline of the present invention, which is provided with a multifunctional replacement pipe;
in the figure, 1, a pipeline group, 1-1, a hard sleeve, 1-2, a flexible sleeve, 1-3, a core function pipe, 2, a power part, 2-1, a heating part, 2-2, a rotary blade part, 2-3, a pesticide spraying part, 3, a motor group, 4, a front end nozzle, 5, a visual function part, 6, a lead, 5-1, a camera, 5-2, an LED lamp group, 5-3, a windshield wiper, 3-1, a motor fixing part, 3-2, a motor, 3-3, a rack, 2-2-1, a rotary blade part shell, 2-2-2, a bearing, 2-1-2, an electric heating wire, 2-1-3, an electric heating wire shell, 2-1-1, a heating part shell, 2-3-1, a pesticide spraying part shell, 2-3-2, a pesticide spraying pipe, 2-3-3, medicament nozzle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a cleaning device of inside oil cake of clean pipeline, includes pipeline group 1, and 1 one end outer wall swing joint of pipeline group has power portion 2, and the 1 other end of pipeline group is connected with water pump, computer and power.
As shown in figure 1, a pipeline set 1 comprises a hard casing 1-1, a soft casing 1-2 is embedded in the hard casing 1-1, a core function pipe 1-3 is embedded in the soft casing 1-2, the hard casing 1-1 extends out of the soft casing 1-2, the core function pipe 1-3 extends out of the soft casing 1-2, the hard casing 1-1 is movably connected with a power part 2, and the core function pipe 1-3 is connected with a water pump, a computer and a power supply.
The core function pipe 1-3 is axially provided with a medicament channel and a cable channel, the cable channel is internally provided with a conducting wire and a video connecting wire, the medicament channel is communicated with a water pump through a guide pipe, the medicament channel extends to the outlet at the end part of the core function pipe 1-3 embedded in the rigid sleeve 1-1 and is a front end nozzle 4, the medicament channel extends to three medicament spray pipes 2-3-2, the three medicament spray pipes are respectively arranged at intervals of 120 degrees in the 2-3-2 direction, the end part of the core function pipe 1-3 embedded in the rigid sleeve 1-1 is provided with a visual function piece 5, and the visual function piece is connected with a power supply and a computer through the conducting wire in the cable channel and. The front end nozzle 4 is connected with a water pump and used for conveying chemical agents to melt the oil blocks.
As shown in fig. 2, the visual function part 5 comprises a camera 5-1 and an LED lamp set 5-2, the camera 5-1 and the LED lamp set 5-2 are embedded in the end of the core function tube 1-3, the LED lamp set is arranged around the camera 5-1, and a wiper 5-3 is arranged at the edge of the camera 5-1. The wiper 5-3 performs reciprocating cleaning from left to right by 180 degrees, and the cleanness of the camera 5-1 in the movement process is ensured. The camera 5-1 is connected with a computer through a video connecting line 7, and a connected display is not limited to the computer and can be any kind of displayable equipment.
As shown in fig. 3, the power unit 2 includes a rotor blade unit 2-2, two ends of the rotor blade unit 2-2 are respectively and fixedly connected with a heating unit 2-1 and a spraying unit 2-3, the heating unit 2-1 is fixedly connected to an end of the rotor blade unit 2-2 away from the water pump, the spraying unit 2-3 is fixedly connected to an end of the rotor blade unit 2-2 near the water pump, the heating unit 2-1, the rotor blade unit 2-2 and the spraying unit 2-3 are fixedly connected to an outer wall of a rigid sleeve 1-1, a motor unit 3 is disposed between the spraying unit 2-3 and the rotor blade unit 2-2, the rigid sleeve 1-1 penetrates the whole power unit 2, and the heating unit 2-1, the rotor blade unit 2-2 and the spraying unit 2-3 are combined into a spindle-shaped structure.
The rotary vane part 2-2 comprises a rotary vane part shell 2-2-1, the rotary vane part shell 2-2-1 is of a cylindrical pipe structure, a spiral rotary vane is arranged on the outer wall of the rotary vane part shell 2-2-1, bearings 2-2-2 are fixedly connected to the inner walls of two ends of the rotary vane part shell 2-2-1, the bearings 2-2-2 are sleeved on the outer wall of the rigid sleeve 1-1, the heating part 2-1 is fixedly connected to the end part, far away from the water pump, of the rotary vane part shell 2-2-1, and the medicine spraying part 2-3 is fixedly connected to the end part, close to the water pump, of the rotary vane part shell 2-2-1.
The heating part 2-1 comprises a heating part shell 2-1-1, the heating part shell 2-1-1 is of a bullet-shaped structure, a round hole is formed in the end portion of the heating part shell 2-1-1, a core function pipe 1-3 is embedded in the round hole, an electric heating wire 2-1-2 is arranged inside the heating part shell 2-1-1, the heating part shell 2-1-1 is fixedly connected with a rotary vane portion 2-2, the electric heating wire 2-1-2 is fixedly connected to the outer wall of a rigid sleeve 1-1, and the heating part shell 2-1-1 is fixedly connected to the end portion, far away from the water pump, of the rotary vane portion 2-2.
The medicine spraying part 2-3 comprises a medicine spraying part shell 2-3-1, the medicine spraying part shell 2-3-1 is of a round cover-shaped structure, the medicine spraying part shell 2-3-1 is fixedly connected to the outer wall of the rigid sleeve 1-1, a medicine spraying nozzle 2-3-3 is arranged on the outer wall of the medicine spraying part shell 2-3-1, a medicine spraying pipe 2-3-2 penetrates through the medicine spraying nozzle 2-3-3 to the outside of the medicine spraying part shell 2-3-1, and the medicine spraying part shell 2-3-1 is fixedly connected to the end portion, close to the water pump, of the rotary blade part shell 2-2-1.
The motor group 3 comprises a motor fixing piece 3-1, the motor fixing piece 3-1 is fixedly connected to the outer wall of the rigid sleeve 1-1, the motor 3-2 is arranged on the side face, close to the vane part outer shell 2-2-1, of the motor fixing piece 3-1, a gear is arranged on a shaft sleeve of the motor 3-2, a rack 3-3 arranged on the inner wall of the vane part outer shell 2-2-1 works in cooperation with the gear, and the motor 3-2 is connected with a power supply through a lead in a cable channel.
An electric heating wire shell 2-1-3 is arranged between the heating part shell 2-1-1 and the electric heating wire 2-1-2, the outer wall of the electric heating wire shell 2-1-3 is connected with the inner wall of the heating part shell 2-1-1, and the electric heating wire shell 2-1-3 is fixedly connected with the outer wall of the rigid sleeve 1-1.
As shown in fig. 4 and 5, the power lines of the camera 5-1, the LED lamp set 5-2, the wiper 5-3, the electric heating wire 2-1-2 and the three motors 3-2 are gathered to a wire 6 to be connected with a power supply. As shown in fig. 5.
As shown in fig. 6 to 9, a multifunctional replacement tube may be disposed at an end of the core functional tube 1-3 embedded in the hard casing 1-1, the multifunctional replacement tube is connected to a power supply through a wire in a cable channel, and the multifunctional replacement tube is one of a strong magnet probe, a drill, an openable/closable pincer-shaped tool and a repair syringe. The strong magnet probe can search for small iron products in a non-iron pipeline to be fixedly sucked and taken out. The drill bit can play a role in breaking up the blockage, and the openable and closable clamp-shaped tool can take out articles in the pipeline; the repair syringe comprises a glue storage container and an injection spray, and can be used for repairing a damaged part in a pipeline. The multifunctional replacement pipe can also replace different functional components according to actual conditions to achieve different use effects.
The invention relates to a cleaning device for oil blocks in a pipeline, which has the following working principle:
power supply power is output by a power line in the core function pipe 1-3, the heating part 2-1 continuously heats the oil blocks in the pipeline and simultaneously chemical agents are sprayed out from the agent nozzles 2-3-3 to prevent the melted oil blocks from being cooled and condensed without continuous heating, and finally the purpose of dredging the pipeline is achieved. Three motors 3-2 are started, three gears connected with the three motors 3-2 rotate and are internally meshed with racks 3-3, so that the rotary vane part 2-2 rotates, the heating part 2-1 and the medicine spraying part 2-3 are welded with the rotary vane part 2-2, bearings arranged inside two ends of the rotary vane part 2-2 finally achieve that the rotary vane part 2-2 and the rotary vane 2 rotate, and the hard sleeve 1-1 keeps relatively static.
The invention relates to a cleaning device for oil blocks in a pipeline, which has the beneficial effects that: the invention can be operated under visual conditions, can achieve accurate operations such as accurate searching, dredging, repairing and the like, saves the energy of workers, saves resources and reduces loss. Avoiding pipeline damage to the maximum extent, prolonging the service life of the pipeline and the like. The heating part of the invention melts the oil block through the electric heating wire, and the front and the rear nozzles spray chemical agents to prevent the oil block from condensing, thereby achieving the effect of cleaning the pipeline, replacing multifunctional components and achieving some specified functions under special conditions. If a magnetic suction head can be added, the object can be searched and fished in the pipeline. If the GPS function is added, workers can survey places which are inconvenient to survey or difficult to survey on the ground. The product can be amplified and reduced according to the actual situation and can be replaced by the power part. Should be used in other respects. The inspection, cleaning, repairing, positioning and the like are carried out when the device enters a closed space (such as a boiler, a pre-laid pipeline and the like) which is inconvenient or incapable of being entered by people.
Claims (10)
1. The utility model provides a cleaning device of inside oil cake of pipeline, its characterized in that, including pipeline group (1), pipeline group (1) one end outer wall swing joint has power portion (2), and the pipeline group (1) other end is connected with water pump, computer and power.
2. The cleaning device for the oil cake inside the pipeline according to claim 1, wherein the pipeline set (1) comprises a rigid casing (1-1), the rigid casing (1-1) is embedded with a flexible casing (1-2), the flexible casing (1-2) is embedded with a core function pipe (1-3), the flexible casing (1-2) extends out of the rigid casing (1-1), the core function pipe (1-3) extends out of the flexible casing (1-2), the rigid casing (1-1) is movably connected with the power part (2), and the core function pipe (1-3) is connected with a water pump, a computer and a power supply.
3. The cleaning device for the oil cake in the pipeline according to claim 2, the core function tube (1-3) is axially provided with a medicament channel and a cable channel, the cable channel is internally provided with a lead (6) and a video connecting wire (7), the medicament channel is communicated with the water pump through a conduit, the outlet of the end part of the medicament channel, which extends to the core function pipe (1-3) embedded in the rigid sleeve (1-1), is a front end nozzle (4), the medicament channel extends with three medicament spray pipes (2-3-2), the three medicament spray pipes (2-3-2) are respectively arranged at intervals of 120 degrees in the direction, the end part of the core function pipe (1-3) embedded in the rigid sleeve (1-1) is provided with a visual function piece (5), the visual functional piece (5) is connected with a power supply and a computer through a wire (6) in the cable channel and a video connecting wire (7).
4. The cleaning device for the oil cake in the pipeline according to claim 3, wherein the visual function part (5) comprises a camera (5-1) and an LED lamp set (5-2), the camera (5-1) and the LED lamp set (5-2) are embedded at the end part of the core function pipe (1-3), the LED lamp set is arranged around the camera (5-1), a wiper (5-3) is arranged at the edge of the camera (5-1), and the camera (5-1) is connected with a computer through a video connecting wire (7).
5. The cleaning device for the oil cake inside the pipeline according to claim 1, wherein the power part (2) comprises a rotary blade part (2-2), the two ends of the rotary blade part (2-2) are respectively and fixedly connected with a heating part (2-1) and a spraying part (2-3), the heating part (2-1) is fixedly connected with the end part of the rotary blade part (2-2) far away from the water pump, the spraying part (2-3) is fixedly connected with the end part of the rotary blade part (2-2) near the water pump, the heating part (2-1), the rotary blade part (2-2) and the spraying part (2-3) are fixedly connected with the outer wall of a rigid sleeve (1-1), a motor group (3) is arranged between the spraying part (2-3) and the rotary blade part (2-2), and the rigid sleeve (1-1) penetrates through the whole power part (2), the heating part (2-1), the rotary vane part (2-2) and the medicine spraying part (2-3) are combined into a fusiform structure.
6. The cleaning device for the oil cake in the pipeline according to claim 5, the rotary vane part (2-2) comprises a rotary vane part shell (2-2-1), the rotary vane part shell (2-2-1) is of a cylindrical pipe structure, the outer wall of the rotary vane part shell (2-2-1) is provided with a spiral rotary vane, the inner walls of two ends of the rotary vane part shell (2-2-1) are fixedly connected with bearings (2-2-2), the bearing (2-2-2) is sleeved on the outer wall of the hard sleeve (1-1), the heating part (2-1) is fixedly connected with the end part of the outer shell (2-2-1) of the rotary vane part far away from the water pump, the pesticide spraying part (2-3) is fixedly connected to the end part of the end, close to the water pump, of the rotating blade part shell (2-2-1).
7. The cleaning device for the oil cake in the pipeline according to claim 5, the heating part (2-1) comprises a heating part shell (2-1-1), the heating part shell (2-1-1) is of a bullet-shaped structure, a round hole is formed in the end part of the heating part shell (2-1-1), a core function tube (1-3) is embedded in the round hole, an electric heating wire (2-1-2) is arranged in a heating part shell (2-1-1), the heating part shell (2-1-1) is fixedly connected with a rotary blade part (2-2), the electric heating wire (2-1-2) is fixedly connected with the outer wall of a rigid sleeve (1-1), the heating part shell (2-1-1) is fixedly connected to the end part of the rotary blade part (2-2) far away from the water pump.
8. The cleaning device for the oil cake in the pipeline according to claim 5, the medicine spraying part (2-3) comprises a medicine spraying part shell (2-3-1), the medicine spraying part shell (2-3-1) is of a round cap-shaped structure, the medicine spraying part shell (2-3-1) is fixedly connected to the outer wall of the rigid sleeve (1-1), the outer wall of the medicine spraying part shell (2-3-1) is provided with a medicine nozzle (2-3-3), the medicament spray pipe (2-3-2) penetrates through the medicament spray opening (2-3-3) to the outside of the housing (2-3-1) of the medicament spraying part, the pesticide spraying part shell (2-3-1) is fixedly connected to the end part of one end, close to the water pump, of the rotary blade part shell (2-2-1).
9. The device for cleaning the oil cake in the pipeline according to claim 6 or 8, wherein the motor set (3) comprises a motor fixing member (3-1), the motor fixing member (3-1) is fixedly connected to the outer wall of the rigid sleeve (1-1), a motor (3-2) is arranged on the side surface of the motor fixing member (3-1) close to the vane portion housing (2-2-1), a gear is arranged on a shaft sleeve of the motor (3-2), a rack (3-3) is arranged on the inner wall of the vane portion housing (2-2-1) and works in cooperation with the gear, and the motor (3-2) is connected with a power supply through a wire in a cable channel.
10. The device for cleaning the oil cake inside the pipeline according to claim 7, wherein a heating wire shell (2-1-3) is arranged between the heating part shell (2-1-1) and the heating wire (2-1-2), the outer wall of the heating wire shell (2-1-3) is connected with the inner wall of the heating part shell (2-1-1), and the heating wire shell (2-1-3) is fixedly connected with the outer wall of the rigid sleeve (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010598312.2A CN111940434A (en) | 2020-06-28 | 2020-06-28 | Cleaning device for inside oil cake of pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010598312.2A CN111940434A (en) | 2020-06-28 | 2020-06-28 | Cleaning device for inside oil cake of pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705532A (en) * | 2021-01-12 | 2021-04-27 | 天津大学 | Pipeline inner wall cleaning device for water conservancy construction |
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Application publication date: 20201117 |