CN113426767A - Sucker rod belt cleaning device - Google Patents

Sucker rod belt cleaning device Download PDF

Info

Publication number
CN113426767A
CN113426767A CN202110607215.XA CN202110607215A CN113426767A CN 113426767 A CN113426767 A CN 113426767A CN 202110607215 A CN202110607215 A CN 202110607215A CN 113426767 A CN113426767 A CN 113426767A
Authority
CN
China
Prior art keywords
sucker rod
cleaning device
box
subassembly
support
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.)
Withdrawn
Application number
CN202110607215.XA
Other languages
Chinese (zh)
Inventor
王远哲
魏艳艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luoyang Gonghang Machinery Technology Co ltd
Original Assignee
Luoyang Gonghang Machinery Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Luoyang Gonghang Machinery Technology Co ltd filed Critical Luoyang Gonghang Machinery Technology Co ltd
Priority to CN202110607215.XA priority Critical patent/CN113426767A/en
Publication of CN113426767A publication Critical patent/CN113426767A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/023Cleaning the external surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00Accessories or details of general applicability for machines or apparatus for cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0323Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00Details of machines or methods for cleaning hollow articles
    • B08B2209/02Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces

Abstract

The invention discloses a sucker rod cleaning device, which comprises a box body and an electric cabinet, wherein a supporting pipe frame is arranged in the box body, a supporting frame for supporting the supporting pipe frame is arranged in the box body, a sucker rod feeding structure is arranged on one side of the end part of the box body, a sucker rod discharging structure is arranged on the other side of the end part of the box body, a sucker rod external cleaning structure is arranged in the sucker rod feeding structure, a sucker rod internal cleaning structure is arranged at the top end of the supporting pipe frame, a drainage structure is wrapped outside the sucker rod feeding structure, a sucker rod to be cleaned is fed through the sucker rod feeding structure, the inside and the outside of the sucker rod are cleaned simultaneously during feeding, the structure is simple, the operation of people is convenient, the manual cleaning operation is replaced, the cleaning efficiency is ensured, and the energy consumption can be effectively reduced, and the pollution to the well site environment is avoided.

Description

Sucker rod belt cleaning device
Technical Field
The invention relates to the technical field of oilfield equipment, in particular to a sucker rod cleaning device.
Background
At present, the oil pumping rod of each oil field well site is cleaned and repaired by manually holding a steam spray gun for hot washing by a boiler car and a water tank car, so that the labor intensity of workers is high, the cleaning quality is poor, the heat energy loss is high, the heat utilization rate is low, and the environmental pollution of the well site is serious.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a sucker rod cleaning device which can automatically clean the inside and the outside of a sucker rod, has a simple overall structure and is convenient and fast to operate, and therefore, the sucker rod cleaning device replaces manpower to clean, not only ensures the cleaning efficiency, but also can effectively reduce the energy consumption and avoid the pollution to the well site environment.
In order to realize the purpose, the invention adopts the following technical scheme:
the utility model provides a sucker rod belt cleaning device, includes box and electric cabinet, the internally mounted of box has the support pipe support, the internally mounted of box has the support frame that supports to supporting the pipe support, the sucker rod is installed on one side of the tip of box and is fed the structure, the sucker rod is installed to the tip opposite side of box and is seen off the structure, the inside that the sucker rod fed the structure is provided with the outside structure of wasing of sucker rod, the inside structure of wasing of sucker rod is installed on the top of support pipe support, the outside parcel that the sucker rod fed the structure has drainage structures, the side at drainage structures is installed to the electric cabinet.
The side of the box body is provided with an opening, and a sealing plate is detachably arranged in the opening.
The utility model discloses a box, including the box, support pipe support, servo motor, fixed bearing, mounting panel and backup pad, the backup pad is installed to the box, and the backup pad is installed to servo motor's output shaft top through the shaft coupling, the other end of back shaft is fixed through fixed bearing, it has mounting panel and backup pad to distribute on the back shaft, the stay tube is installed to the symmetry formula at the both ends of mounting panel, the position department that the backup pad corresponds the stay tube has seted up the through-hole, there is a water pump one the one end that the stay tube is close to servo motor through the pipe connection.
The inside cleaning structure of the sucker rod comprises a water outlet which is arranged at one end of the support pipe far away from the servo motor, a fixing ring is connected with the support pipe between the water outlet and the support plate in a threaded manner, and a gasket is wrapped outside the support pipe.
The sucker rod feeding structure comprises a first component and a second component, a toothed chain and rack connecting component is arranged between the first component and the second component, the top end of the second component is connected with a motor, the first component and the second component both comprise a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are connected through gear engagement, and the first rotating shaft and the second rotating shaft are both connected with a feeding wheel.
The sucker rod feeding structure and the sucker rod discharging structure are arranged to be symmetrical structures.
The external cleaning structure of sucker rod includes the inlet tube, the collar is installed to the bottom of inlet tube, the collar sets up between two sets of feed wheels in the inside subassembly one of sucker rod feeding structure and subassembly two, the top of inlet tube is connected with water pump two, the internally mounted of collar has the shower nozzle.
The support tube is characterized in that connecting holes are formed in the mounting plates on two sides of the support tube, guide rods are connected to the inside of the connecting holes in a sliding mode, a connecting plate is fixed to the bottom end of each guide rod, and the connecting plate is fixed to the box body through a first electric push rod.
The support frame is including setting up the spacing ring in the box inside, the spacing ring parcel is in the outside of backup pad, the spout has been seted up to the position department that the inside of spacing ring corresponds the backup pad, the mounting groove has all been seted up at the both ends of backup pad, the inside of mounting groove is fixed with the gyro wheel, the slide opening has been seted up on the spacing ring of backup pad below, electric putter two is installed to the position department that the bottom of box corresponds the slide opening.
The drainage structure comprises a shell, the shell is wrapped outside the sucker rod feeding structure, and a water outlet is formed in the position, corresponding to the bottom end of the shell, of the bottom end of the box body.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the sucker rod cleaning device, the sucker rod to be cleaned is fed through the sucker rod feeding structure, and the inside and the outside of the sucker rod are cleaned simultaneously during feeding, so that the sucker rod cleaning device is simple in structure and convenient for people to operate, and replaces manpower to perform cleaning operation, so that the cleaning efficiency is ensured, the energy consumption can be effectively reduced, and the pollution to the well site environment is avoided.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a first cross-sectional view of the interior of the present invention;
FIG. 4 is a second cross-sectional view of the interior of the present invention;
FIG. 5 is an interior first cross-sectional elevation view of the present invention;
FIG. 6 is a third cross-sectional side view of the interior of the present invention;
1. a box body; 2. supporting the pipe frame; 3. a support frame; 4. a sucker rod feeding structure; 5. a sucker rod delivery structure; 6. the external cleaning structure of the sucker rod; 7. the inside of the sucker rod is cleaned; 8. a drainage structure; 9. an electric cabinet; 10. an opening; 11. a closing plate; 12. a servo motor; 13. a support shaft; 14. fixing a bearing seat; 15. supporting a tube; 16. a through hole; 17. a first water pump; 18. a water outlet; 19. a fixing ring; 20. a gasket; 21. a first component; 22. a second component; 23. a toothed chain and rack connecting assembly; 24. a first rotating shaft; 25. a second rotating shaft; 26. a gear; 27. a feed wheel; 28. a second water pump; 29. a water inlet pipe; 30. a mounting ring; 31. a spray head; 32. connecting holes; 33. a guide bar; 34. a connecting plate; 35. an electric push rod; 36. a limiting ring; 37. a chute; 38. mounting grooves; 39. a roller; 40. a slide hole; 41. a second electric push rod; 42. mounting a plate; 43. a support plate; 44. a motor; 45. a housing; 46. and a water outlet.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
The sucker rod cleaning device comprises a box body 1 and an electric cabinet 9, wherein a supporting pipe frame 2 is arranged inside the box body 1, a supporting frame 3 for supporting the supporting pipe frame 2 is arranged inside the box body 1, a sucker rod feeding structure 4 is arranged on one side of the end part of the box body 1, a sucker rod sending-out structure 5 is arranged on the other side of the end part of the box body 1, a sucker rod external cleaning structure 6 is arranged inside the sucker rod feeding structure 4, a sucker rod internal cleaning structure 7 is arranged at the top end of the supporting pipe frame 2, a drainage structure 8 is wrapped outside the sucker rod feeding structure 4, the electric cabinet 9 is arranged on the side surface of the drainage structure 8, the sucker rod is fed and discharged through the sucker rod feeding structure 4 and the sucker rod sending-out structure 5, and the inside and the outside of the sucker rod are cleaned through the sucker rod external cleaning structure 6 and the sucker rod internal cleaning structure 7, the cleaned sucker rod is supported by the supporting pipe frame 2, and water used by the cleaning structure 6 outside the sucker rod is prevented from rushing through the drainage structure 8.
Preferably: an opening 10 is formed in the side face of the box body 1, a closing plate 11 is detachably mounted in the opening 10, and a user can conveniently overhaul equipment inside the box body 1.
Preferably: support pipe support 2 is including installing the inside servo motor 12 of box 1, back shaft 13 is installed through the shaft coupling on servo motor 12's the output shaft top, the other end of back shaft 13 is fixed through fixed bearing frame 14, it has mounting panel 42 and backup pad 43 to distribute on back shaft 13, stay tube 15 is installed to the symmetry formula at mounting panel 42's both ends, through-hole 16 has been seted up to the position department that backup pad 43 corresponds stay tube 15, there is a water pump 17 one end that stay tube 15 is close to servo motor 12 through the pipe connection, servo motor 12 work drives back shaft 13 and reciprocates and rotates, adjust the position of two stay tubes 15 from this, make the unloading operation can carry out when wasing from this.
Preferably: the internal cleaning structure 7 of the sucker rod comprises a water outlet 18 which is arranged at one end of a support pipe 15 far away from the servo motor 12, a fixing ring 19 is connected with the support pipe 15 between the water outlet 18 and a support plate 43 through threads, and a gasket 20 wraps the outside of the support pipe 15, so that the internal wall of the sucker rod can be cleaned more thoroughly.
Preferably: the sucker rod feeding structure 4 comprises a first assembly 21 and a second assembly 22, a toothed chain rack connecting assembly 23 is arranged between the first assembly 21 and the second assembly 22, the top end of the second assembly 22 is connected with a motor 44, the first assembly 21 and the second assembly 22 both comprise a first rotating shaft 24 and a second rotating shaft 25, the first rotating shaft 24 and the second rotating shaft 25 are meshed and connected through a gear 26, the bottom ends of the first rotating shaft 24 and the second rotating shaft 25 are both connected with a feeding wheel 27, and the motor 44 enables the first rotating shaft 24 and the second rotating shaft 25 to rotate, so that the sucker rod is fed and discharged through the feeding wheel 27.
Preferably: the sucker rod feeding structure 4 and the sucker rod sending structure 5 are arranged to be symmetrical structures.
Preferably: sucker rod outside cleaning structure 6 includes inlet tube 29, and collar 30 is installed to the bottom of inlet tube 29, and collar 30 sets up between two sets of feed wheels 27 in the inside subassembly one 21 of sucker rod feeding structure 4 and subassembly two 22, and the top of inlet tube 29 is connected with two 28 water pumps, and the internally mounted of collar 30 has shower nozzle 31, and two 28 work of water pump make the inside of shower nozzle 31 have water to spout, from this to the outside cleaning operation of sucker rod.
Preferably: connecting holes 32 are formed in the mounting plates 42 on two sides of the supporting pipe 15, guide rods 33 are connected to the inside of the connecting holes 32 in a sliding mode, connecting plates 34 are fixed to the bottom ends of the guide rods 33, the connecting plates 34 are fixed to the box body 1 through electric push rods 35, the electric push rods 35 work, the guide rods 33 are in contact with sucker rods sleeved on the outer portion of the supporting pipe 15, the sucker rods are ejected out, the sucker rods enter the sucker rod sending-out structure 5, and accordingly blanking operation is conducted.
Preferably: support frame 3 is including setting up at the inside spacing ring 36 of box 1, spacing ring 36 wraps up in the outside of backup pad 43, spout 37 has been seted up to the inside position department that corresponds backup pad 43 of spacing ring 36, mounting groove 38 has all been seted up at the both ends of backup pad 43, the inside of mounting groove 38 is fixed with gyro wheel 39, the slide opening 40 has been seted up on the spacing ring 36 of backup pad 43 below, electric putter two 41 is installed to the position department that corresponds slide opening 40 in the bottom of box 1, the steadiness of support pipe support 2 when wasing has been guaranteed.
Preferably: drainage structures 8 includes casing 45, and casing 45 parcel is in the outside of sucker rod feeding structure 4, and the position department that the bottom of box 1 corresponds casing 45 bottom has seted up outlet 46, can prevent that the water that sucker rod outside washing structure 6 used from taking place the condition of four streams.
In the sucker rod cleaning device of embodiment 1, when in use, a sucker rod to be cleaned is put into the feeding wheel 27 inside the sucker rod feeding structure 4, then the motor 44 is operated, so that the sucker rod is sleeved outside the supporting pipe 15, at the moment, the first water pump 17 and the second water pump 28 are operated, the first water pump 17 is operated, so that water is sprayed out from the water outlet 18, thereby cleaning the inside of the sucker rod, the second water pump 28 is operated, so that water is sprayed out from the spray head 31, thereby cleaning the outside of the sucker rod, after the sucker rod is separated from the inside of the sucker rod feeding structure 4, the servo motor 12 is operated, so that the supporting pipe 15 sleeved with the sucker rod reaches the position of the sucker rod sending structure 5, then the first electric push rod 35 is operated, the sucker rod is ejected through the guide rod 33, thereby the sucker rod enters the inside of the sucker rod sending structure 5, the sucker rod falls off the supporting pipe 15 under the action of the sucker rod delivery structure 5, so that the blanking operation is performed.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a sucker rod belt cleaning device, includes box (1) and electric cabinet (9), characterized by: the internally mounted of box (1) has support pipe support (2), the internally mounted of box (1) has support frame (3) that supports support pipe support (2), the sucker rod is installed on tip one side of box (1) and is fed structure (4), sucker rod send-out structure (5) is installed to the tip opposite side of box (1), the inside that the sucker rod fed structure (4) is provided with sucker rod outside cleaning structure (6), sucker rod inside cleaning structure (7) are installed on the top of support pipe support (2), the outside parcel that the sucker rod fed structure (4) has drainage structures (8), the side at drainage structures (8) is installed in electric cabinet (9).
2. The sucker rod cleaning device of claim 1, wherein: an opening (10) is formed in the side face of the box body (1), and a closing plate (11) is detachably mounted in the opening (10).
3. The sucker rod cleaning device of claim 1, wherein: support pipe support (2) including installing inside servo motor (12) of box (1), back shaft (13) are installed through the shaft coupling on the output shaft top of servo motor (12), the other end of back shaft (13) is fixed through fixing bearing seat (14), it has mounting panel (42) and backup pad (43) to distribute on back shaft (13), stay tube (15) are installed to the both ends one-tenth symmetry formula of mounting panel (42), through-hole (16) have been seted up to the position department that backup pad (43) correspond stay tube (15), there is one (17) of water pump in the one end that stay tube (15) are close to servo motor (12) through the pipe connection.
4. The sucker rod cleaning device of claim 3, wherein: the inside cleaning structure (7) of the sucker rod comprises a water outlet (18) which is arranged at one end of a support pipe (15) far away from the servo motor (12), a fixing ring (19) is connected with the support pipe (15) between the water outlet (18) and a support plate (43) through threads, and a gasket (20) is wrapped outside the support pipe.
5. The sucker rod cleaning device of claim 1, wherein: sucker rod feeding structure (4) includes subassembly one (21) and subassembly two (22), through toothed chain rack coupling assembling (23) between subassembly one (21) and subassembly two (22), the top of subassembly two (22) is connected with motor (44), subassembly one (21) and subassembly two (22) all have pivot one (24) and pivot two (25) to constitute, connect through gear (26) meshing between pivot one (24) and pivot two (25), the bottom of pivot one (24) and pivot two (25) all is connected with feed wheel (27).
6. The sucker rod cleaning device of claim 1, wherein: the sucker rod feeding structure (4) and the sucker rod sending structure (5) are arranged to be symmetrical structures.
7. The sucker rod cleaning device of claim 1, wherein: sucker rod outside washing structure (6) are including inlet tube (29), collar (30) are installed to the bottom of inlet tube (29), between two sets of feed wheel (27) of collar (30) setting in sucker rod feeding structure (4) inside subassembly (21) and subassembly two (22), the top of inlet tube (29) is connected with water pump two (28), the internally mounted of collar (30) has shower nozzle (31).
8. The sucker rod cleaning device of claim 3, wherein: connecting holes (32) are formed in the mounting plates (42) on the two sides of the supporting tube (15), guide rods (33) are connected to the inside of the connecting holes (32) in a sliding mode, connecting plates (34) are fixed to the bottom ends of the guide rods (33), and the connecting plates (34) are fixed to the box body (1) through electric push rods (35).
9. The sucker rod cleaning device of claim 3, wherein: support frame (3) are including setting up spacing ring (36) in box (1) inside, spacing ring (36) parcel is in the outside of backup pad (43), spout (37) have been seted up to the inside position department that corresponds backup pad (43) of spacing ring (36), mounting groove (38) have all been seted up at the both ends of backup pad (43), the inside of mounting groove (38) is fixed with gyro wheel (39), draw runner (40) have been seted up on spacing ring (36) of backup pad (43) below, electric putter two (41) are installed to the position department that the bottom of box (1) corresponds draw runner (40).
10. The sucker rod cleaning device of claim 1, wherein: drainage structures (8) include casing (45), casing (45) parcel is in the outside of sucker rod feeding structure (4), outlet (46) have been seted up to the position department that the bottom of box (1) corresponds casing (45) bottom.
CN202110607215.XA 2021-06-01 2021-06-01 Sucker rod belt cleaning device Withdrawn CN113426767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110607215.XA CN113426767A (en) 2021-06-01 2021-06-01 Sucker rod belt cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110607215.XA CN113426767A (en) 2021-06-01 2021-06-01 Sucker rod belt cleaning device

Publications (1)

Publication Number Publication Date
CN113426767A true CN113426767A (en) 2021-09-24

Family

ID=77803355

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110607215.XA Withdrawn CN113426767A (en) 2021-06-01 2021-06-01 Sucker rod belt cleaning device

Country Status (1)

Country Link
CN (1) CN113426767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114260238A (en) * 2021-12-22 2022-04-01 江苏正伟机械有限公司 Vacuum couch roll cylinder mould cleaning device and using method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114260238A (en) * 2021-12-22 2022-04-01 江苏正伟机械有限公司 Vacuum couch roll cylinder mould cleaning device and using method thereof

Similar Documents

Publication Publication Date Title
CN210351900U (en) Self-cleaning electric appliance cabinet
CN113560075B (en) Paint spraying device with uniform rotating speed for wind power accessories
CN113305061A (en) Mechanical gear cleaning device and operation method thereof
CN113426767A (en) Sucker rod belt cleaning device
CN217251337U (en) Water-saving emission-reducing cleaning device of spray dryer
CN215656536U (en) Photovoltaic power plant is with solar panel surface intelligence cleaning device
CN212759957U (en) Cover plate glass and coating equipment for toughened glass film
CN113105310B (en) Light wine recovery unit of alcohol production
CN211386142U (en) Hydraulic pressure pipe belt cleaning device is used in hydraulic pressure spare production
CN215715760U (en) Automatically cleaning type regulation pump station is with novel water tank
CN212642969U (en) Cleaning device for wind power generation blade
CN217993434U (en) Improved generation PE solid-walled pipe production is with high-efficient cooling device
CN212582801U (en) Pressure boost tank pump integration water supply equipment
CN214104299U (en) Automatic water spraying glass cleaning robot
CN213645065U (en) High-pressure water jet spray device for inner core based on electric field
CN216965064U (en) Spraying device is used in oil cleaner shell production
CN110635762A (en) Solar cell panel with cleaning function
CN219232981U (en) Multi-functional large-scale oven
CN215089467U (en) Cleaning device with tubular clamping mechanism for maintenance of nuclear power plant pump
CN115780424A (en) High-efficient formula raceway pipeline inner wall cleaning device
CN219942000U (en) Slurry conveying device for lithium ion battery
CN219836925U (en) Low-pressure container convenient to wash
CN216827732U (en) Secondary water supply tank with cleaning device
CN213727299U (en) Metal door and window frame spraying equipment
CN217342546U (en) Water pump accessory belt cleaning device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210924

WW01 Invention patent application withdrawn after publication