CN209772870U - Automatic deoiling machine for deoiling cold heading product - Google Patents
Automatic deoiling machine for deoiling cold heading product Download PDFInfo
- Publication number
- CN209772870U CN209772870U CN201920200404.3U CN201920200404U CN209772870U CN 209772870 U CN209772870 U CN 209772870U CN 201920200404 U CN201920200404 U CN 201920200404U CN 209772870 U CN209772870 U CN 209772870U
- Authority
- CN
- China
- Prior art keywords
- deoiling
- cylinder
- cold
- automatic
- filter screen
- 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.)
- Expired - Fee Related
Links
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model discloses an automatic deoiling machine for deoiling of cold-heading product, relate to deoiling equipment technical field, including frame and deoiling device, be provided with the deoiling pond that is used for storing deoiling liquid in one side of frame, the filter screen that immerses under the deoiling pond liquid level is arranged to the slope in the deoiling pond, and the filter screen is connected with vibration component, the driven voller has been arranged in the rotation of deoiling pond, the driven voller is arranged in the below of filter screen, be provided with the drive roll in the frame and be used for driving the drive roll to be in the frame pivoted rotation motor, the drive roll is arranged in the oblique top of driven voller, the cover is equipped with the conveyer belt between drive roll and the driven voller, the transport plane perpendicular to direction of transfer equidistance at the conveyer belt has arranged spacing, the guide fill has been arranged in the below of drive roll; has the advantages of time saving, labor saving, good automation degree and improvement of the deoiling efficiency.
Description
Technical Field
The utility model relates to a deoiling equipment technical field, more specifically say, it relates to an automatic deoiling machine that is used for cold-heading product deoiling.
Background
The cold header is a main apparatus for mass-producing cold-forged products such as bolts and nuts; the cold forging equipment is required to cool the cold forging product in the production and processing process, and deoiling treatment is required to be carried out on the cold forging equipment based on the repeated utilization of cooling machine oil and the clean requirement of the cold forging product.
The existing deoiling method in the production process is to separately arrange a centrifugal deoiling machine which is generally vertical, wherein an deoiling cylinder is arranged at the upper part of a frame, then after a cold forging product with oil is placed into an oil filter screen, a motor is started to enable the oil filter screen to rotate at a high speed for deoiling, the motor is stopped after the deoiling is finished, and then the whole deoiling cylinder is overturned to pour out the material, so that the time and the labor are wasted, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an automatic deoiling machine for cold-heading product deoiling, it is good to have degree of automation, labour saving and time saving, and improves the effect of its deoiling efficiency.
In order to achieve the above purpose, the utility model provides a following technical scheme:
The utility model provides an automatic deoiling machine for cold-heading product deoiling, includes the frame and sets up the deoiling device in the frame, its characterized in that: one side of frame is provided with the deoiling pond that is used for storing deoiling liquid the oil removal pond internal slope has arranged and has immersed the filter screen under the deoiling pond liquid level, just the filter screen is connected with the vibration subassembly the deoiling pond internal rotation has arranged the driven voller, the driven voller is arranged in the below of filter screen be provided with the drive roll in the frame and be used for driving the drive roll and be in the frame pivoted rotation motor, the drive roll is arranged in the oblique top of driven voller the cover is equipped with the conveyer belt between drive roll and the driven voller the transport surface perpendicular to direction of transfer equidistance of conveyer belt has arranged spacing the guide fill has been arranged to the below of drive roll, the export and the deoiling device of guide fill are connected.
According to the arrangement, cold heading products formed by batch cold heading of the cold heading machine fall into the deoiling tank from an outlet of the cold heading machine, preliminary deoiling treatment is carried out on the filter screen falling into the deoiling tank, and during the preliminary deoiling treatment, the cold heading products on the filter screen are vibrated by the vibration device to achieve the purpose of deoiling and move downwards along the filter screen; then, the driving roller and the driven roller are driven to rotate by rotating the motor, so that the cold heading product is conveyed upwards by the conveying belt, and the conveying stability of the cold heading product is improved by the limiting strips on the conveying belt; finally, after the cold heading product on the conveying belt is led into the material guide hopper, the cold heading product is led into the deoiling device for cleaning again; carry and deoiling the washing to the cold-heading product through deoiling pond and deoiling device in proper order, it is high to have degree of automation, labour saving and time saving, and improves its deoiling efficiency's effect.
Further setting: the vibration subassembly includes a plurality of one end fixed connection springs on the filter screen and fixed vibration dish that sets up on the filter screen, the other end fixed connection of spring is on the pool wall in deoiling pond.
So set up, vibrate the filter screen through the vibrations dish, simultaneously through the effect of spring, make the cold-heading product on its filter screen reach the purpose of vibration and preliminary deoiling processing, improve the deoiling of cold-heading product and get rid of the purpose of impurity.
Further setting: the height of the limiting strips is smaller than the height of the cold forging product.
So set up, the cold-heading product of being convenient for drops to and rotates on the conveyer belt and be in the conveyer belt.
Further setting: the maximum distance between the conveying belt and the filter screen is smaller than the height of the cold forging product.
So set up, be convenient for drop the cold-heading product on the filter screen to the conveyer belt.
Further setting: the deoiling device comprises a deoiling cylinder fixedly arranged on a rack, a filter cylinder coaxially rotatably arranged in the deoiling cylinder, a spray nozzle arranged on the inner side wall of the deoiling cylinder and spraying cleaning liquid towards the interior of the filter cylinder, a driving motor arranged on the rack and used for driving the filter cylinder to rotate on the rack, and a plurality of stirring sheets arranged on the inner circumferential surface of the filter cylinder, wherein a feed inlet and a discharge outlet are respectively formed in two ends of the deoiling cylinder, the feed inlet of the deoiling cylinder is obliquely arranged downwards towards the direction of the discharge outlet, and an outlet of a guide hopper is arranged at the feed inlet.
so set up, wash once more in deoiling device's cartridge filter through the leading-in cold-heading product of stock guide on with the conveyer belt, upset and wash the cold-heading product through the stirring piece in spray nozzle and the cartridge filter in the deoiling section of thick bamboo, along with the cartridge filter that the slope was arranged, make its cold-heading product move towards the discharge gate direction in being in the pivoted cartridge filter, and finally drop outside the cartridge filter from discharge gate department, reach the purpose that automatic upset was washd and was carried, improve the purpose to the automatic washing of cold-heading product and improve its cleanliness factor.
Further setting: a receiving hopper is arranged at the discharge port.
So set up, be convenient for reach the cold-heading product after washing in the cartridge filter through the receiving hopper and carry out the purpose of collecting.
Further setting: the caliber of the filter cartridge is smaller than or equal to that of the discharge hole.
So set up, make the cold-heading product in its cartridge filter drop to the receiving hopper in along with the rotation of cartridge filter is automatic from the discharge gate department, reach the purpose of being convenient for unload.
further setting: an oil outlet is formed in the lower end of the oil removing cylinder, the oil outlet is connected with a recovery cylinder for recovering cleaning liquid, filter gauze for filtering the cleaning liquid in the recovery cylinder is arranged in the recovery cylinder, and the recovery cylinder is connected with a spray nozzle through a hose.
So set up, through the oil-out will take off the deoiling liquid of oil cylinder bottom and discharge to the recovery drum in to filter through filtering the gauze in the recovery drum, filter some impurity particle, will filter some deoiling liquid again and convey to spraying the mouth and carry out the purpose of recycling.
Further setting: and a sewage discharge outlet is formed in the deoiling tank.
so set up, isomorphic drain is convenient for get rid of and the effect of changing deoiling liquid in the deoiling pond.
further setting: and an oil separation plate is arranged in the deoiling tank.
so set up, be the upper end liquid level of deoiling pond through the oil removal board and divide into both sides, make its cold-heading product drop to the filter screen on from one side of oil removal board, pass through conveyor with the filter screen lower extreme through the cold-heading product of preliminary deoiling outside the oil removal pond at oil removal board opposite side.
By adopting the technical scheme, the utility model discloses relative prior art compares, has following advantage:
1. The purpose of deoiling is achieved by vibrating the cold heading product on the filter screen through the vibrating device, the cold heading product moves downwards along the filter screen, the cold heading product is conveyed upwards through the conveying belt, the conveying stability of the cold heading product is improved through the limiting strips on the conveying belt, the cold heading product is conveyed and deoiled and cleaned sequentially through the deoiling pool and the deoiling device, and the deoiling device has the advantages of high automation degree, time and labor saving and improvement of the deoiling efficiency;
2. the cold heading product is overturned and cleaned through a spray nozzle in the oil removing cylinder and a stirring sheet in the filter cylinder, along with the obliquely arranged filter cylinder, the cold heading product is positioned in the rotating filter cylinder and moves towards the direction of the discharge port, and finally falls out of the filter cylinder from the discharge port, so that the purposes of automatically overturning, cleaning and conveying the cold heading product are achieved, and the purposes of automatically cleaning the cold heading product and improving the cleanliness of the cold heading product are improved;
3. The deoiling liquid at the bottom end of the deoiling cylinder is discharged into the recovery cylinder through the oil outlet, and is filtered through the filter gauze in the recovery cylinder, so that some impurity particles are filtered, and the deoiling liquid which is filtered is conveyed to the spray nozzle for recycling.
Drawings
Fig. 1 is a schematic structural view of an automatic deoiling machine for deoiling a cold heading product;
Fig. 2 is a sectional view at a deoiling tank in an automatic deoiling machine for deoiling a cold heading product;
Fig. 3 is a partially enlarged sectional view at a deoiling tank in the automatic deoiling machine for deoiling a cold heading product;
Fig. 4 is a sectional view at an axis of a deoiling cylinder in the automatic deoiling machine for deoiling a cold heading product;
Fig. 5 is a schematic structural view of a part of a deoiling cylinder in the deoiling apparatus.
In the figure: 1. a frame; 11. a stripper plate; 12. a material guide hopper; 2. a deoiling pool; 21. a filter screen; 22. a vibrating assembly; 23. a spring; 24. a vibrating pan; 25. an oil removal plate; 26. a sewage draining outlet; 3. a conveying device; 31. a driven roller; 32. a drive roll; 33. rotating the motor; 34. a conveyor belt; 341. a limiting strip; 4. a deoiling device; 41. a deoiling cylinder; 411. a feed inlet; 412. a discharge port; 413. an oil outlet; 42. a filter cartridge; 43. a spray nozzle; 44. a drive motor; 45. a stirring sheet; 46. a material receiving hopper; 47. a recovery cylinder; 48. a hose.
Detailed Description
The automatic deoiling machine for deoiling cold heading products is further described with reference to the attached drawings.
An automatic deoiling machine for deoiling cold heading products comprises a frame 1, a deoiling pool 2 arranged on one side of the frame 1 and used for storing deoiling liquid, a conveying device 3 used for conveying the cold heading products subjected to preliminary deoiling in the deoiling pool 2 to a deoiling device 4, and a deoiling device 4 arranged on the frame 1, wherein the deoiling pool 2 is used for storing deoiling liquid.
As shown in fig. 2 and 3, a filter screen 21 immersed under the liquid level of the deoiling pool 2 is obliquely arranged in the deoiling pool 2, and the filter screen 21 is connected with a vibration assembly 22; the vibration assembly 22 comprises a plurality of springs 23 with one ends fixedly connected to the filter screen 21 and a vibration disc 24 fixedly arranged on the filter screen 21, and the other ends of the springs 23 are fixedly connected to the wall of the oil removing pool 2.
As shown in fig. 2 and 3, in order to reduce adhesion of scum to the conveyor belt 34, an oil separating plate 25 is fixedly arranged in the deoiling pool 2, so that a cold heading product thereof falls onto the filter screen 21 from one side of the oil separating plate 25 and is conveyed out of the deoiling pool through the conveyor device 3 from the other side of the oil separating plate 25; meanwhile, a drain 26 for draining and replacing the deoiling liquid in the deoiling pool 2 is arranged in the deoiling pool 2.
As shown in fig. 1 to 3, the conveying device 3 includes a driven roller 31 rotatably disposed in the oil removing pool 2, a driving roller 32 rotatably disposed on the frame 1 and located obliquely above the driven roller 31, a rotating motor 33 for driving the driving roller 32 to rotate on the frame 1, and a conveying belt 34 sleeved between the driving roller 32 and the driven roller 31, and the conveying belt 34 is a magnetic conveying belt.
As shown in fig. 2 and 3, the driven roller 31 is arranged below the filter screen 21, and the maximum distance between the conveyor belt 34 and the filter screen 21 is smaller than the height arrangement of the cold-forged product; in order to improve the stability of the cold heading product when the cold heading product is conveyed by the conveyor belt 34, the spacing strips 341 are equidistantly arranged on the conveying surface of the conveyor belt 34 perpendicular to the conveying direction, and the height of the spacing strips 341 is smaller than that of the cold-forged product.
As shown in fig. 2 and 3, a discharging plate 11 is fixedly arranged on the frame 1, the discharging plate 11 is obliquely arranged below the conveying belt 34, the distance between the output end of the conveying belt 34 and the discharging plate 11 is smaller than the height of the cold forging product, and meanwhile, the included angle between the discharging plate 11 and the conveying belt 34 is smaller than 90 degrees; a material guide hopper 12 is arranged under the discharging plate 11; the material guide hopper 12 is arranged obliquely downwards, and the outlet of the material guide plate is connected with the deoiling device 4.
As shown in fig. 4, the deoiling device 4 includes a deoiling cylinder 41 obliquely and fixedly disposed on the frame 1, a filter cylinder 42 coaxially and rotatably disposed in the deoiling cylinder 41, a spray nozzle 43 disposed on an inner side wall of the deoiling cylinder 41 and spraying a cleaning solution into the filter cylinder 42, a driving motor 44 provided on the frame 1 for driving the filter cylinder 42 to rotate on the frame 1, and a plurality of stirring blades 45 spirally disposed on an inner circumferential surface of the filter cylinder 42.
As shown in fig. 4 and fig. 5, a feed inlet 411 and a discharge outlet 412 are respectively opened at two ends of the deoiling cylinder 41, the direction of the feed inlet 411 of the deoiling cylinder 41 is inclined downward toward the direction of the discharge outlet 412, and the material guide hopper 12 is arranged at the feed inlet 411; the discharge port 412 is provided with the receiving hopper 46, and the caliber of the filter cylinder 42 is smaller than or equal to that of the discharge port 412, so that the cold heading product in the filter cylinder 42 automatically falls into the receiving hopper 46 from the discharge port 412.
As shown in fig. 4 and 5, in order to improve the recycling performance of the cleaning liquid, an oil outlet 413 is formed at the lower end of the deoiling cylinder 41, the oil outlet 413 is connected with a recovery cylinder 47 for recovering the cleaning liquid, a filter gauze for filtering the cleaning liquid in the recovery cylinder 47 is arranged in the recovery cylinder 47, and the bottom end of the recovery cylinder 47 is connected with the spray nozzle 43 through a hose 48, so that the purpose of filtering and recycling is achieved.
The working principle is as follows: the cold heading products formed by cold heading in batches by the cold heading machine fall into the deoiling pool 2 from an outlet of the cold heading machine, preliminary deoiling treatment is carried out on the filter screen 21 in the deoiling pool 2, and during the preliminary deoiling treatment, the cold heading products on the filter screen 21 are subjected to vibration deoiling through a vibration device and move downwards along the filter screen 21; then conveying the cold heading products on the conveyor belt 34 through the conveyor belt 34 in the conveying device 3, and conveying the cold heading products upwards and guiding the cold heading products on the conveyor belt 34 into the guide hopper 12 through the stripper plate 11; secondly, cleaning the cold heading product in the filter cylinder 42 of the deoiling device 4 again, overturning and cleaning the cold heading product through the spray nozzle 43 and the stirring sheet 45, moving the cold heading product in the filter cylinder 42 towards the discharge hole 412 along with the rotation of the filter cylinder 42, and finally dropping the cold heading product into the receiving hopper 46 to achieve the purposes of automatic overturning and cleaning and conveying; carry and deoiling the washing to the cold-heading product through deoiling pond 2 and deoiling device 4 in proper order, it is high to have degree of automation, labour saving and time saving, and improves its deoiling efficiency's effect.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an automatic deoiling machine for cold-heading product deoiling, includes frame (1) and sets up deoiling device (4) on frame (1), its characterized in that: one side of frame (1) is provided with deoiling pond (2) that is used for storing deoiling liquid take off oil pond (2) interior slope arrange have dip in deoiling pond (2) filter screen (21) under the liquid level, just filter screen (21) are connected with vibration subassembly (22) take off oil pond (2) internal rotation and have arranged driven voller (31), driven voller (31) are arranged in the below of filter screen (21) be provided with drive roll (32) on frame (1) and be used for driving drive roll (32) and be in frame (1) pivoted rotating motor (33), drive roll (32) are arranged in the oblique top of driven voller (31) the cover is equipped with conveyer belt (34) between drive roll (32) and driven voller (31) the transport face perpendicular to direction of transfer equidistance of conveyer belt (34) has arranged spacing strip (341), a material guide hopper (12) is arranged below the driving roller (32), and an outlet of the material guide hopper (12) is connected with the deoiling device (4).
2. the automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: vibration subassembly (22) include spring (23) and fixed vibration dish (24) that set up on filter screen (21) of a plurality of one end fixed connection on filter screen (21), the other end fixed connection of spring (23) is on the pool wall of deoiling pond (2).
3. The automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: the height of the limiting strip (341) is smaller than the height of the cold forging product.
4. The automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: the maximum distance between the conveying belt (34) and the filter screen (21) is smaller than the height of the cold-forged product.
5. The automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: the deoiling device (4) comprises a deoiling cylinder (41) fixedly arranged on the rack (1), a filter cylinder (42) coaxially and rotatably arranged in the deoiling cylinder (41), a spraying nozzle (43) arranged on the inner side wall of the deoiling cylinder (41) and spraying cleaning liquid towards the interior of the filter cylinder (42), a driving motor (44) arranged on the rack (1) and used for driving the filter cylinder (42) to rotate on the rack (1) and a plurality of stirring sheets (45) arranged on the inner circumferential surface of the filter cylinder (42), wherein a feeding hole (411) and a discharging hole (412) are respectively formed in two ends of the deoiling cylinder (41), the direction of the feeding hole (411) of the deoiling cylinder (41) is obliquely downwards arranged towards the direction of the discharging hole (412), and an outlet of the guide hopper (12) is arranged at the feeding hole (411).
6. The automatic deoiling machine for deoiling of cold heading product according to claim 5, characterized by: a receiving hopper (46) is arranged at the discharge opening (412).
7. The automatic deoiling machine for deoiling of cold heading product according to claim 5, characterized by: the caliber of the filter cartridge (42) is smaller than or equal to the caliber of the discharge hole (412).
8. the automatic deoiling machine for deoiling of cold heading product according to claim 5, characterized by: an oil outlet (413) is formed in the lower end of the oil removing cylinder (41), the oil outlet (413) is connected with a recovery cylinder (47) used for recovering cleaning liquid, filtering gauze used for filtering the cleaning liquid in the recovery cylinder (47) is arranged in the recovery cylinder (47), and the recovery cylinder (47) is connected with the spraying nozzle (43) through a hose (48).
9. The automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: a sewage outlet (26) is arranged in the oil removing pool (2).
10. The automatic deoiling machine for deoiling of cold heading product according to claim 1, characterized in that: an oil separation plate (25) is arranged in the oil removal tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200404.3U CN209772870U (en) | 2019-02-15 | 2019-02-15 | Automatic deoiling machine for deoiling cold heading product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200404.3U CN209772870U (en) | 2019-02-15 | 2019-02-15 | Automatic deoiling machine for deoiling cold heading product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209772870U true CN209772870U (en) | 2019-12-13 |
Family
ID=68794837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920200404.3U Expired - Fee Related CN209772870U (en) | 2019-02-15 | 2019-02-15 | Automatic deoiling machine for deoiling cold heading product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209772870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156540A (en) * | 2020-09-14 | 2021-01-01 | 安徽省舒城县舒丰现代农业科技开发有限责任公司 | Vibration deoiling equipment for fried vegetable food and working method thereof |
| CN115138555A (en) * | 2021-03-31 | 2022-10-04 | 中冶宝钢技术服务有限公司 | Catalyst screening plant |
-
2019
- 2019-02-15 CN CN201920200404.3U patent/CN209772870U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156540A (en) * | 2020-09-14 | 2021-01-01 | 安徽省舒城县舒丰现代农业科技开发有限责任公司 | Vibration deoiling equipment for fried vegetable food and working method thereof |
| CN112156540B (en) * | 2020-09-14 | 2021-11-09 | 安徽省舒城县舒丰现代农业科技开发有限责任公司 | Vibration deoiling equipment for fried vegetable food and working method thereof |
| CN115138555A (en) * | 2021-03-31 | 2022-10-04 | 中冶宝钢技术服务有限公司 | Catalyst screening plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209772870U (en) | Automatic deoiling machine for deoiling cold heading product | |
| CN214516314U (en) | Reclaimed aluminum raw material washing and screening device | |
| CN109221435B (en) | Equipment for rapidly preparing low-residue soybean milk and processing technology thereof | |
| CN110584151A (en) | High-efficient continuous type pure physics walnut-meat peeling device | |
| CN111085286A (en) | Preprocessing device of rice processing | |
| CN106564137B (en) | A kind of plastic material sorting unit | |
| CN102178331B (en) | Chillies processing equipment | |
| CN109107641B (en) | A kind of energy-saving food processing rice cleaning device | |
| CN114405653A (en) | Grinding and screening device for meteorite raw materials for celadon product manufacturing | |
| CN210307388U (en) | High-efficient ball sand separator | |
| CN209599648U (en) | A kind of circulation deferrization bits device of regenerated plastics | |
| CN108993998B (en) | Solid chemical material belt cleaning device | |
| CN210704346U (en) | Shot sand collecting mechanism of shot blasting machine | |
| CN209663881U (en) | A kind of automatic oil remover of metal | |
| CN109623288B (en) | Nut machining process | |
| CN206855122U (en) | A kind of dreg removing system | |
| CN220596374U (en) | Feeding grain extractor for producing rice | |
| CN221044204U (en) | Soybean belt cleaning device is used in soybean paste production | |
| CN211363087U (en) | Waste plastic recycling production line | |
| CN210730180U (en) | Rice processing vibration stoner | |
| CN212384001U (en) | Filtration equipment is used in chemical products production | |
| CN220799942U (en) | Bubble cleaning machine | |
| CN219556248U (en) | Agricultural product cleaning equipment | |
| CN212923226U (en) | Finished cement conveying device | |
| CN217748354U (en) | Food raw material particle cleaning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |