CN105798025B - The energy-saving manual cleaning equipment of petroleum interior conduit - Google Patents
The energy-saving manual cleaning equipment of petroleum interior conduit Download PDFInfo
- Publication number
- CN105798025B CN105798025B CN201610321108.XA CN201610321108A CN105798025B CN 105798025 B CN105798025 B CN 105798025B CN 201610321108 A CN201610321108 A CN 201610321108A CN 105798025 B CN105798025 B CN 105798025B
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- Prior art keywords
- bracket
- traction rope
- petroleum
- energy
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004140 cleaning Methods 0.000 title claims abstract description 53
- 239000003208 petroleum Substances 0.000 title claims abstract description 34
- 238000003825 pressing Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 244000273618 Sphenoclea zeylanica Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/04—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Sewage (AREA)
Abstract
The invention discloses the energy-saving manual cleaning equipments of petroleum interior conduit, solve since petroleum pipeline is longer, thus the problem of need longer push-pull rod to be cooperated just to effectively remove substance in pipeline, operation is caused to be inconvenient.The present invention includes operating main body, cleaning body and stationary body；The stationary body includes fixed pulley；The cleaning body includes cylindrical bracket cylinder, clean body, line three-way hole, the first traction rope, around fixed pulley and across the second traction rope of line three-way hole；The operating main body includes fixed frame, rotating bar, shake handle；The free end of first traction rope is connected at the end position of rotating bar one end, and the free end of second traction rope is connected at the end position of the rotating bar other end.The present invention has many advantages, such as convenient for picking and placing, and operates more convenient.
Description
Technical field
The present invention relates to a kind of cleaning equipments, and in particular to the energy-saving manual cleaning equipment of petroleum interior conduit.
Background technique
With the continuous development of petroleum industry, the substantial increase of various petroleum note bilge wells, so that various oil pipelines,
Aqueduct demand also increases, and grease pipe tube inner wall after being used for a long time will adhere to there are many impurity such as grease stain, dirt,
It is just more blocked when surveying the dynamics monitoring works such as pressure and oil-field flooding using the test that grease pipe carries out oil well, influences monitoring knot
Fruit, while difficulty is brought to water filling, it needs to re-replace pipeline toward contact sometimes, brings inconvenience to well maintenance.It is right
Petroleum transmission pipeline carries out periodic cleaning maintenance, is conducive to extend pipeline life, improves efficiency of transmission, reduces energy consumption and leakage.
It is a kind of petroleum pipeline cleaning device disclosed in patent CN201520628436.5, including scrubs mechanism, becomes
Diameter mechanism and casing, scrub mechanism and diameter changing mechanism is each provided with motor, and motor is mounted in casing, before casing both ends are respectively
End cap and rear end cap scrub mechanism and are provided with main shaft, and main shaft passes through drive end bearing bracket, and lantern ring is arranged in spindle nose, and lantern ring, which is hinged with, to be washed
Brush connecting rod is scrubbed connecting rod and is hinged with and scrubs；Diameter changing mechanism is provided with screw rod, and threaded shaft is arranged in rear end cap, and threaded shaft is parallel to silk
Sliding block is fixed in bar, feed screw nut and threaded shaft, sliding block, drive end bearing bracket, rear end cap are hinged with variable diameter connecting rod, variable diameter connecting rod hinge
It is connected to variable diameter bar；The main shaft, screw rod are wound on same straight line rotation with electronic.Structure is complicated for this, with high costs；And due to petroleum
Pipeline is longer, thus needs longer push-pull rod to be cooperated just to effectively remove substance in pipeline, thus picks and places, clean behaviour
It is inconvenient.
A kind of cleaning device for petroleum pipeline in patent CN201520074508.6, including successively lead to from front to back
Cross dirt scraping equipment, cleaning device and the edging device being threadedly coupled；Dirt scraping equipment, cleaning device and edging device are cavity knot
Structure and inside communicate connected；Dirt scraping equipment includes the rotary shaft body for cylindrical body, is offered on rotary shaft body through rotary shaft body front and back end
The threaded hole in face further includes the hollow stem being connected on rotary shaft body by threaded hole, is uniformly provided with leak hole on hollow stem；Also wrap
The circular groove being uniformly arranged on rotary shaft body periphery is included, the part between adjacent circular groove constitutes blade.It should
Although structure structure is simple with respect to CN201520628436.5, it is also required to another longer push-pull rod when operating and is matched
Close the purpose that could effectively realize cleaning.
Summary of the invention
The technical problems to be solved by the present invention are: since petroleum pipeline is longer, thus longer push-pull rod is needed to carry out
Cooperation can just effectively remove substance in pipeline, thus pick-and-place, clean operation are inconvenient；It is designed to provide a kind of solution
The energy-saving manual cleaning equipment of petroleum interior conduit of the above problem.
The present invention is achieved through the following technical solutions:
The energy-saving manual cleaning equipment of petroleum interior conduit, including operating main body, cleaning body and stationary body,
The stationary body includes fixed pulley；
The cleaning body includes cylindrical bracket cylinder, and the clean body on one week side wall of bracket cylinder is arranged in, if
The line three-way hole in bracket cylinder at axial centerline is set, one end is fixed at bracket cylinder top center position, is another
One end is the first traction rope of free end, and one end is fixed at bracket cylinder bottom center point position, the other end is around fixed pulley
The second traction rope of bracket cylinder top is extended to from line three-way hole afterwards；
The operating main body includes fixed frame, the rotating bar being mounted on fixed frame, and the shake handle in rotating bar is arranged in
Hand；The free end of first traction rope is connected at the end position of rotating bar one end, the free end of second traction rope
It is connected at the end position of the rotating bar other end.
By the cooperation of the first traction rope, the second traction rope and fixed pulley, bracket cylinder and clean body can be effectively set to follow
The movement of rope and move, and then achieve the purpose that cleaning.And passes through the effect of the rope, effectively convenient for picking and placing, and grasp
Make more convenient.
By the setting of operating main body, need to only rotate shake handle can be realized matching for the first traction rope and the second traction rope
Movement is closed, facilitates manual operation, effect is more significant.
Further, the bracket cylinder is hollow structure, is additionally provided with rinse liquid outlet on the side wall of the bracket cylinder, should
The cleaning solution putting bag being connected to rinse liquid outlet is additionally provided in hollow structure, the cleaning solution at adjacent threads lead to the hole site is placed
It is additionally provided with perforation on bag, pressing plate is additionally provided in the rack tube body, one end third connected to it is provided on the pressing plate and is led
Messenger, the third traction rope other end extend line three-way hole after passing through perforation；Perforation corresponding position is provided with just on the pressing plate
In the string holes that the second traction rope passes through.
By the setting of the third traction rope, effectively cleaning solution putting bag can be squeezed, and then put cleaning solution
Bagging cleaning liquid inside sprays, and then has the function that clean inside petroleum pipeline together with clean body, and it is more convenient to operate.
Further, the stationary body further includes the bracket for fixed pulley installation, and the limit being arranged on bracket
Latch.
Further, the bracket is circular ring type, which is installed to the center position of bracket by connecting rod.It is described
The quantity of bracket upper limit latch is 3 or more, and 3 or more limit latches are rounded is evenly spaced on bracket for this.It is described
Bearing bar is additionally provided on bracket.
By the setting of above-mentioned optimization, stationary body is set to be fixed on one end of petroleum pipeline, and then effectively convenient for rope body
Freely operate.
In order to effectively promote bracket cylinder and clean body is stable moves in pipeline, so make clean body everywhere with pipe
Pressure between road inside is almost the same, effectively improves clean effect.First traction rope is fixed on by being stably connected with rope
On bracket cylinder, this is stably connected with rope and is made of three ropes body consistent in length, and one end of this three rope bodies is fixed on rack tube
On body, the other end is fixed as one and connect with the fixing end of the first traction rope.Three ropes body consolidating on bracket cylinder
Pinpoint shape in equilateral triangle.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention is by the cooperation of the first traction rope, the second traction rope and fixed pulley, can effectively make bracket cylinder and clear
Clean body follows the movement of rope and moves, and then achievees the purpose that cleaning；
2, the present invention is by the setting of operating main body, only need to rotate shake handle the first traction rope and second can be realized and lead
The cooperation of messenger is mobile, facilitates manual operation, effect is more significant；
3, it can effectively promote bracket cylinder and clean body stable in pipeline by the pulling of the first traction rope in the present invention
Interior movement, and then keep pressure of the clean body everywhere between pipeline inside almost the same, effectively improve clean effect；
4, the present invention passes through the setting of third traction rope, can effectively squeeze cleaning solution putting bag, and then makes clear
Washing lotion putting bag cleaning liquid inside sprays, and then has the function that clean inside petroleum pipeline together with clean body, and operation is more just
It is prompt.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention.
Fig. 2 be the present invention in cleaning body connected with stationary body after structural schematic diagram.
Fig. 3 is the schematic diagram of internal structure of cleaning body in the present invention.
Label and corresponding parts title in attached drawing:
1- bracket cylinder, 2- clean body, 3- line three-way hole, the first traction rope of 4-, the second traction rope of 5-, 6- fixed pulley, 7- branch
Frame, 8- limit latch, 9- connecting rod, 10- bearing bar, 11- are stably connected with rope, 12- rinse liquid outlet, and 13- perforates, 14- pressing plate,
15- third traction rope, 16- string holes, 17- fixed frame, 18- rotating bar, 19- shake handle.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1-Figure 3, the energy-saving manual cleaning equipment of petroleum interior conduit of the present invention, including operating main body, cleaning master
Body and stationary body.
The stationary body includes fixed pulley 6；The stationary body further includes the bracket 7 installed for fixed pulley 6, and
Limit latch 8 on bracket 7 is set.The bracket 7 is circular ring type, which is installed to bracket 7 by connecting rod 9
Center position.The quantity of the 7 upper limit latch 8 of bracket is 3 or more, and 3 or more the limit latches 8 are rounded uniformly
It is arranged on bracket 7.Bearing bar 10 is additionally provided on the bracket 7.
The cleaning body includes cylindrical bracket cylinder 1, and the clean body 2 on 1 one weeks side walls of bracket cylinder is arranged in,
Line three-way hole 3 of the bracket cylinder 1 at axial centerline is set, and one end is fixed on 1 top center position of bracket cylinder
Place, the first traction rope 4 that the other end is free end, one end is fixed at 1 bottom center point position of bracket cylinder, the other end bypasses
Second traction rope 5 on 1 top of bracket cylinder is extended to after fixed pulley 6 from line three-way hole 3；
The bracket cylinder 1 is hollow structure, is additionally provided with rinse liquid outlet 12 on the side wall of the bracket cylinder 1, in this
It is additionally provided in hollow structure and is connected to rinse liquid outlet 12Cleaning solution putting bag, at 3 position of line three-way holeCleaning solution is put BaggingOn be additionally provided with perforation 13, be additionally provided with pressing plate 14 in the bracket cylinder 1, be provided with one end on the pressing plate 14 and be connected thereto
Third traction rope 15,15 other end of third traction rope pass through perforation 13 after extend line three-way hole 3.The pressing plate in the present embodiment
14 be located at 1 bottom end of bracket cylinder andCleaning solution putting bagBetween；13 corresponding positions of perforating on the pressing plate 14 are provided with convenient for
The string holes 16 that two traction ropes 5 pass through.
The operating main body includes fixed frame 17, the rotating bar 18 being mounted on fixed frame 17, is arranged in rotating bar 18
Shake handle 19；The free end of first traction rope 4 is connected at the end position of 18 one end of rotating bar, and described second leads
The free end of messenger 5 is connected at the end position of 18 other end of rotating bar.
Specific scale removal process of the invention is as follows:
(1) operating main body, cleaning body and stationary body is respectively prepared；
(2) assembling of operating main body, cleaning body and stationary body on petroleum pipeline, specific assembling process are completed are as follows:
The both ends of petroleum pipeline are respectively designated as inserting end and extension end first, by the free end of the second traction rope around after fixed pulley
Across line three-way hole, petroleum pipeline is protruded into from inserting end together with the free end of the first traction rope, and stretch out petroleum pipeline from extension end
Road；Then, cleaning body is protruded into petroleum pipeline from inserting end, and stationary body is fixed on to the inserting end of petroleum pipeline；
Finally, the free end of the first traction rope and the free end of the second traction rope are respectively wound around rotating bar two from opposite direction
End；
(3) movement of the cleaning body in petroleum pipeline can be realized in rotation shake handle；The first traction rope is pulled simultaneously
With third traction rope, the cleaning solution in cleaning solution putting bag is discharged, passes through the common of clean body in moving process and cleaning solution
It acts on and the inner tubal wall of petroleum pipeline is cleared up.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, the first traction rope 4 is by being stably connected with rope 11 described in the present embodiment
It is fixed on bracket cylinder 1, this is stably connected with rope 11 and is made of three ropes body consistent in length, and one end of this three rope bodies is fixed
On bracket cylinder 1, the other end is fixed as one and connect with the fixing end of the first traction rope 4.Three ropes body is in bracket
Fixed point shaped formation in equilateral triangle on cylinder 1.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. the energy-saving manual cleaning equipment of petroleum interior conduit, which is characterized in that including operating main body, cleaning body and fixed master
Body,
The stationary body includes fixed pulley (6)；
The cleaning body includes cylindrical bracket cylinder (1), the clean body being arranged on (1) one week side wall of bracket cylinder
(2), the line three-way hole (3) at bracket cylinder (1) neighbouring axial centerline is set, and one end is fixed on bracket cylinder (1) top
At center position, the other end be free end the first traction rope (4), one end is fixed on bracket cylinder (1) bottom center point
The place of setting, the other end are around the second traction rope (5) for extending to bracket cylinder (1) top after fixed pulley (6) from line three-way hole (3)；
The operating main body includes fixed frame (17), the rotating bar (18) being mounted on fixed frame (17), is arranged in rotating bar
(18) shake handle (19) on；The free end of first traction rope (4) is connected to the end position of rotating bar (18) one end
Place, the free end of second traction rope (5) is connected at the end position of rotating bar (18) other end.
2. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 1, which is characterized in that the bracket cylinder
(1) it is hollow structure, is additionally provided with rinse liquid outlet (12) on the side wall of the bracket cylinder (1), is also set up in the hollow structure
There is the cleaning solution putting bag being connected to rinse liquid outlet (12), is also set on the cleaning solution putting bag at neighbouring line three-way hole (3) position
Perforation (13) are equipped with, pressing plate (14) is additionally provided in the bracket cylinder (1), is provided with one end on the pressing plate (14) and is secured to connect
The third traction rope (15) connect, third traction rope (15) other end extend line three-way hole (3) after passing through perforation (13)；The pressing plate
(14) perforation (13) corresponding position is provided with the string holes (16) passed through convenient for the second traction rope (5) on.
3. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 1, which is characterized in that the stationary body
It further include the bracket (7) for fixed pulley (6) installation, and the limit latch (8) being arranged on bracket (7).
4. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 3, which is characterized in that the bracket (7)
For circular ring type, which is installed to the center position of bracket (7) by connecting rod (9).
5. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 4, which is characterized in that the bracket (7)
The quantity of upper limit latch (8) is 3 or more, and 3 or more limit latches (8) are rounded is evenly spaced on bracket (7) for this.
6. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 3, which is characterized in that the bracket (7)
On be additionally provided with bearing bar (10).
7. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 1, which is characterized in that first traction
Rope (4) is fixed on bracket cylinder (1) by being stably connected with rope (11), this is stably connected with rope (11) and is restricted by three consistent in length
Body composition, this three rope bodies one end be fixed on bracket cylinder (1), the other end be fixed as one and with the first traction rope (4)
Fixing end connection.
8. the energy-saving manual cleaning equipment of petroleum interior conduit according to claim 7, which is characterized in that three ropes body
Fixed point shaped formation in equilateral triangle on bracket cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321108.XA CN105798025B (en) | 2016-05-16 | 2016-05-16 | The energy-saving manual cleaning equipment of petroleum interior conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321108.XA CN105798025B (en) | 2016-05-16 | 2016-05-16 | The energy-saving manual cleaning equipment of petroleum interior conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105798025A CN105798025A (en) | 2016-07-27 |
| CN105798025B true CN105798025B (en) | 2019-04-23 |
Family
ID=56451255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610321108.XA Active CN105798025B (en) | 2016-05-16 | 2016-05-16 | The energy-saving manual cleaning equipment of petroleum interior conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105798025B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701971A (en) * | 2019-01-22 | 2019-05-03 | 天津市管道工程集团有限公司 | Adjustable inner wall of the pipe draws cleaning device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000107996A (en) * | 1998-07-30 | 2000-04-18 | Japan Science & Technology Corp | Surface treatment method and apparatus using magnetic anisotropic tool |
| CN204093797U (en) * | 2014-09-01 | 2015-01-14 | 浙江水利水电学院 | A kind of be applied to steel conduit under water scrape rust rifle |
| CN104941967A (en) * | 2014-03-25 | 2015-09-30 | 新昌县澄潭镇康成机械配件厂 | Pipeline inner washing device |
-
2016
- 2016-05-16 CN CN201610321108.XA patent/CN105798025B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000107996A (en) * | 1998-07-30 | 2000-04-18 | Japan Science & Technology Corp | Surface treatment method and apparatus using magnetic anisotropic tool |
| CN104941967A (en) * | 2014-03-25 | 2015-09-30 | 新昌县澄潭镇康成机械配件厂 | Pipeline inner washing device |
| CN204093797U (en) * | 2014-09-01 | 2015-01-14 | 浙江水利水电学院 | A kind of be applied to steel conduit under water scrape rust rifle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105798025A (en) | 2016-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 618000 Fuzhou Road, Deyang, Guanghan, China, the two paragraph of the city of Sichuan Applicant after: Sichuan Petroleum Equipment Co., Ltd. Address before: 618300 Fuzhou Road, Deyang, Guanghan, China, the two paragraph of the city of Sichuan Applicant before: SICHUAN XILIN OIL SUPPLIES EQUIPMENT CO., LTD. |
|
| CB02 | Change of applicant information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: 221000 Zhaodun Town Industrial Concentration Zone, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Jiju Textile Co., Ltd Address before: Two Fuzhou Road 618000 section, Guanghan, Sichuan, Deyang Patentee before: SICHUAN XIPU PETROLEUM MATERIALS EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |