CN216208446U - Geotechnical test permeation device convenient to measure - Google Patents
Geotechnical test permeation device convenient to measure Download PDFInfo
- Publication number
- CN216208446U CN216208446U CN202122893556.6U CN202122893556U CN216208446U CN 216208446 U CN216208446 U CN 216208446U CN 202122893556 U CN202122893556 U CN 202122893556U CN 216208446 U CN216208446 U CN 216208446U
- Authority
- CN
- China
- Prior art keywords
- pipe
- outlet pipe
- wall
- fixedly connected
- workbench
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 22
- 230000035515 penetration Effects 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 239000008399 tap water Substances 0.000 claims description 37
- 235000020679 tap water Nutrition 0.000 claims description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 230000003028 elevating effect Effects 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model belongs to the field of geotechnical tests, in particular to a geotechnical test penetration device convenient for measurement, which comprises a workbench, a metal cylinder and a measuring cup, wherein a wastewater disposal basin is fixedly connected in the workbench, a support frame is fixedly connected on the upper surface of the workbench, a slide way is arranged in the support frame, a lifting platform is movably connected in the slide way, a water tank is arranged on the bottom surface of the lifting platform, a first water outlet pipe is fixedly connected on the circumferential outer wall of the water tank, a first control valve is arranged on one side of the first water outlet pipe, a lifting assembly is arranged on the upper surface of the workbench, a water supply mechanism is arranged in the workbench, and a plurality of water outlets are arranged on the circumferential outer wall of the metal cylinder. The fluctuation of test data can be reduced, and the accuracy of the test data is improved.
Description
Technical Field
The utility model relates to the technical field of geotechnical tests, in particular to a permeability device for geotechnical tests, which is convenient to measure.
Background
The geotechnical test is a general name of physical, mechanical, chemical properties and mineral tests of rocks and soil, and is divided into an in-situ test (field investigation test) and an indoor test, wherein the indoor test usually uses a constant head test and a variable head test, and the constant head geotechnical test refers to that a constant head penetration device is used for measuring seepage flow and head heights at different points so as to calculate seepage flow speed and hydraulic gradient and further calculate a permeability coefficient.
At present, related professionals often adopt multiple water head heights to measure repeatedly in constant head tests, but when the height position is changed, the water tank is placed on work tables at different heights through manpower, and tap water supplement is very troublesome, so that the geotechnical test penetration device convenient to measure is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects that in the prior art, water tanks are manually placed on work tables with different heights and tap water is very troublesome to supplement, and provides a soil test penetration device convenient for measurement.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a soil test penetration device convenient for measurement comprises a workbench, a metal cylinder and a measuring cup, wherein a wastewater pool is fixedly connected in the workbench, a support frame is fixedly connected on the upper surface of the workbench, a slide way is arranged in the support frame, a lifting table is movably connected in the slide way, a water tank is placed on the bottom surface of the lifting table, a first water outlet pipe is fixedly connected on the circumferential outer wall of the water tank, a first control valve is arranged on one side of the first water outlet pipe, a lifting assembly is arranged on the upper surface of the workbench, a water supply mechanism is arranged in the workbench, a plurality of water outlets are formed in the circumferential outer wall of the metal cylinder, a second water outlet pipe, an overflow pipe and a pressure measuring pipe are respectively and movably connected in the plurality of water outlets, a second control valve is arranged on one side of the second water outlet pipe, a third water outlet pipe is movably connected on the circumferential outer wall of the second water outlet pipe, and a third control valve is arranged on one side of the third water outlet pipe, the measuring cup is placed on the upper surface of the workbench and located below the second water outlet pipe, one end of the pressure measuring pipe is movably connected to the top of the workbench, a reinforcing plate is clamped to the outer wall of the circumference of the pressure measuring pipe and fixed to the support frame, a first filter plate and a second filter plate are movably connected to the inside of the metal cylinder respectively, and a material placing chamber is arranged between the first filter plate and the second filter plate.
Preferably, the lifting unit includes the mount pad, mount pad fixed connection is on the upper surface of workstation, two mounting panels of top fixedly connected with of mount pad, swing joint have the rocker between two mounting panels, the circumference outer wall fixedly connected with take-up pulley of rocker, the circumference outer wall swing joint of take-up pulley has the lifting rope, one side of support frame and the equal fixedly connected with pulley of top inner wall, and the other end of lifting rope walks around two pulleys and is fixed mutually with the elevating platform, the spout has been seted up at the top of mount pad, and swing joint has the slide in the spout, and swing joint has the control bolt in the slide, the top fixedly connected with of mount pad is limited the board, slide and limited board swing joint are passed to the one end of control bolt.
Preferably, the water supply mechanism comprises a tap water pipe, the tap water pipe is fixedly connected to the inner wall of one side of the workbench, the other end of the tap water pipe penetrates through the top of the workbench and is located above the water tank, a tap water control valve is arranged on one side of the tap water pipe, and a reinforcing block is fixedly connected to the circumferential outer wall of the tap water pipe and is fixed to the support frame.
Preferably, one end of the first water outlet pipe is movably connected with a telescopic pipe.
Preferably, one side of the support frame is provided with a graduated scale.
Preferably, a positioning block is arranged on one side of the lifting platform.
Compared with the prior art, the utility model has the beneficial effects that:
1. through the setting of lifting unit and water supply mechanism for people can adjust the height of water tank at will in geotechnical test, and it is also very convenient to supply the water source to the water tank, has saved the consumption of manpower.
2. Through the arrangement of the telescopic pipe on the first water outlet pipe, tap water in the water tank can be stably conveyed into the metal cylinder, the phenomenon that the tap water falls into the water and spills out of the metal cylinder due to the height of the tap water is avoided, and the influence on related professionals in a soil test is reduced.
3. Through the setting of the reinforcing plate on the water pipe and the reinforcing block on the piezometer tube for geotechnical test penetrant unit is more firm, avoids the influence that the structural instability caused test data, has improved test data's rate of accuracy.
According to the utility model, people can accurately adjust the height of the water tank, the water source can be conveniently supplemented, meanwhile, tap water in the water tank can be stably fed into the metal cylinder, the situation that the tap water is splashed is avoided, the fluctuation of test data can be reduced, and the accuracy of the test data is improved.
Drawings
Fig. 1 is a schematic front view of a soil test penetration device convenient for measurement according to the present invention;
fig. 2 is a schematic rear view of the geotechnical test penetration device convenient for measurement according to the present invention;
fig. 3 is a schematic structural diagram of a lifting assembly of the geotechnical test penetration device convenient for measurement, which is provided by the utility model;
fig. 4 is a schematic cross-sectional structural view of a metal cylinder of the geotechnical test penetration device convenient for measurement according to the present invention.
In the figure: 1. a work table; 2. a support frame; 3. a lifting platform; 4. a water tank; 5. a first water outlet pipe; 6. a first control valve; 7. a telescopic pipe; 8. a metal cylinder; 9. a second water outlet pipe; 10. a second control valve; 11. a third water outlet pipe; 12. a third control valve; 13. an overflow pipe; 14. a piezometric tube; 15. a reinforcing plate; 16. a tap water pipe; 17. a tap water control valve; 18. a reinforcing block; 19. a mounting seat; 20. mounting a plate; 21. a take-up pulley; 22. a rocker; 23. a chute; 24. a slide plate; 25. a limiting plate; 26. a control bolt; 27. a first filter plate; 28. a second filter plate; 29. a discharge chamber; 30. a pulley; 31. a lifting rope; 32. a measuring cup; 33. positioning blocks; 34. a wastewater tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-4, an earth test penetration device convenient for measurement comprises a workbench 1, a metal cylinder 8 and a measuring cup 32, wherein a wastewater disposal basin 34 is fixed in the workbench 1 through bolts, a support frame 2 is fixed on the upper surface of the workbench 1 through bolts, a slide way is arranged in the support frame 2, a lifting platform 3 is connected in the slide way in a sliding way, a water tank 4 is arranged on the bottom surface of the lifting platform 3, a first water outlet pipe 5 is fixed on the circumferential outer wall of the water tank 4 through bolts, a first control valve 6 is arranged on one side of the first water outlet pipe 5, a lifting component is arranged on the upper surface of the workbench 1, a water supply mechanism is arranged in the workbench 1, a plurality of water outlets are arranged on the circumferential outer wall of the metal cylinder 8, a second water outlet pipe 9, an overflow pipe 13 and a pressure measuring pipe 14 are respectively inserted in the plurality of water outlets, a second control valve 10 is arranged on one side of the second water outlet pipe 9, a third water outlet pipe 11 is inserted on the circumferential outer wall of the second water outlet pipe 9, one side of the third water outlet pipe 11 is provided with a third control valve 12, the measuring cup 32 is placed on the upper surface of the workbench 1 and is positioned below the second water outlet pipe 9, one end of the pressure measuring pipe 14 is inserted at the top of the workbench 1, a reinforcing plate 15 is clamped on the circumferential outer wall of the pressure measuring pipe 14, the reinforcing plate 15 is fixed with the support frame 2, a first filter plate 27 and a second filter plate 28 are respectively inserted in the metal cylinder 8, and a discharging chamber 29 is arranged between the first filter plate 27 and the second filter plate 28.
Example two
Referring to fig. 1 to 4, the present invention provides a new technical solution: a soil test penetration device convenient for measurement comprises a workbench 1, a metal cylinder 8 and a measuring cup 32, wherein a wastewater pool 34 is fixed in the workbench 1 through bolts, the wastewater pool 34 can treat various wastewater generated in a test and avoid polluting the environment of the workbench 1, a support frame 2 is fixed on the upper surface of the workbench 1 through bolts, a graduated scale is arranged on one side of the support frame 2 and can be used for accurately recording and adjusting the height of an elevating platform 3, a slide is arranged in the support frame 2, the elevating platform 3 is connected in the slide in a sliding way, a positioning block 33 is arranged on one side of the elevating platform 3, the positioning block 33 can be used for facilitating people to accurately position the height of the elevating platform 3, a water tank 4 is placed on the bottom surface of the elevating platform 3, a first water outlet pipe 5 is fixed on the outer wall of the circumference of the water tank 4 through bolts, a first control valve 6 is arranged on one side of the first water outlet pipe 5, a telescopic pipe 7 is inserted into one end of the first water outlet pipe 5, in the test, tap water can stably flow into the metal cylinder 8 by adjusting the length of the telescopic pipe 7 to avoid splashing, a lifting assembly is arranged on the upper surface of the workbench 1 and can be convenient for people to adjust the height of the water tank 4, the test is carried out by using various heights, the lifting assembly comprises a mounting seat 19, the mounting seat 19 is fixed on the upper surface of the workbench 1 through bolts, two mounting plates 20 are fixed on the top of the mounting seat 19 through bolts, a rocker 22 is rotatably connected between the two mounting plates 20, a take-up pulley 21 is fixed on the circumferential outer wall of the rocker 22 through bolts, a lifting rope 31 is wound on the circumferential outer wall of the take-up pulley 21, pulleys 30 are fixed on one side and the top inner wall of the support frame 2 through bolts, the other end of the lifting rope 31 is wound around the two pulleys 30 and fixed with the lifting platform 3, a chute 23 is arranged on the top of the mounting seat 19, a sliding plate 24 is connected in the sliding groove 23 in a sliding manner, a control bolt 26 is connected in the sliding plate 24 in a threaded manner, a limiting plate 25 is fixed at the top of the mounting seat 19 through a bolt, the sliding plate 24 and the limiting plate 25 can clamp a lifting rope 31 so as to limit the lifting platform 3, one end of the control bolt 26 penetrates through the sliding plate 24 and is rotatably connected with the limiting plate 25, a water supply mechanism is arranged in the workbench 1 and can stably supply tap water, the time consumed by people for supplementing tap water by manpower is reduced, the water supply mechanism comprises a tap water pipe 16, the tap water pipe 16 is fixed on the inner wall of one side of the workbench 1 through a bolt, the other end of the tap water pipe 16 penetrates through the top of the workbench 1 and is positioned above the water tank 4, a tap water valve 17 is arranged on one side of the tap water pipe 16, a reinforcing block 18 is fixed on the outer wall of the circumference of the tap water pipe 16 through a bolt, and the reinforcing block 18 is fixed with the support frame 2, the circumferential outer wall of the metal cylinder 8 is provided with a plurality of water outlets, a second water outlet pipe 9, an overflow pipe 13 and a pressure measuring pipe 14 are respectively inserted in the water outlets, the overflow pipe 13 can guide the water quantity overflowing in the test to flow into a wastewater tank 34, one side of the second water outlet pipe 9 is provided with a second control valve 10, the circumferential outer wall of the second water outlet pipe 9 is inserted with a third water outlet pipe 11, one side of the third water outlet pipe 11 is provided with a third control valve 12, a measuring cup 32 is placed on the upper surface of the workbench 1 and is positioned below the second water outlet pipe 9, one end of the pressure measuring pipe 14 is inserted at the top of the workbench 1, the circumferential outer wall of the pressure measuring pipe 14 is clamped with a reinforcing plate 15, the reinforcing plate 15 is fixed with the support frame 2, the reinforcing plate 15 can be used for fixing the pressure measuring pipe 14, the test data fluctuation caused by unstable structure is reduced, a first filter plate 27 and a second filter plate 28 are respectively inserted in the metal cylinder 8, a discharge chamber 29 is provided between the first filter plate 27 and the second filter plate 28.
The working principle is as follows: when the geotechnical test is needed, firstly, whether water leaks from each interface of the instrument is detected, after the geotechnical test is finished, the rocker 22 is rocked clockwise, the rocker 22 drives the take-up pulley 21 to rotate clockwise, the take-up pulley 21 drives the lifting rope 31, the lifting rope 31 pulls the lifting platform 3 upwards, the lifting platform 3 drives the water tank 4 to ascend, when the water tank 4 reaches the top of the support frame 2, the control bolt 26 is rotated, the control bolt 26 drives the sliding plate 24 to slide and clamp the lifting rope 31 together with the limiting plate 25, at the moment, the tap water control valve 17 is opened, tap water is filled into the water tank 4, when the water amount is enough, the tap water control valve 17 is closed, the lifting rope 31 is loosened by rotating the control bolt 26, meanwhile, the lifting platform 3 is controlled to descend by rocking the rocker 22 anticlockwise, the lifting platform 3 drives the water tank 4 to descend, when the testing height is reached, the control bolt 26 is rotated, the sliding plate 24 is driven by the control bolt 26 to move and clamp the lifting rope 31 together with the limiting plate 25, then the sample is put into the material placing chamber 29, the length of the extension tube 7 is adjusted, the extension tube 7 enters the metal cylinder 8, then the first control valve 6 is opened, tap water flows into the metal cylinder 8 through the first water outlet pipe 5, flows into the material placing chamber 29 through the second filter plate 28, flows into the pressure measuring pipe 14 after penetrating the sample, data is recorded after the water level of the pressure measuring pipe 14 is stabilized, meanwhile, the tap water flows into the second water outlet pipe 9 through the first filter plate 27, then the second control valve 10 is opened, the tap water flows into the measuring cup 32, the second meter is opened to record data, the measurement and the recording are repeated according to the method, during the test, the overflowed water quantity flows into the waste water tank 34 from the overflow pipe 13, after the test is finished, the second control valve 10 is closed and the third control valve 12 is opened, and the tap water flows into the waste water tank 34 from the third water outlet pipe 11.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a geotechnical test penetrant unit convenient to measure, includes workstation (1), metal drum (8) and graduated flask (32), a serial communication port, fixedly connected with wastewater disposal basin (34) in workstation (1), the last fixed surface of workstation (1) is connected with support frame (2), is equipped with the slide in support frame (2), and swing joint has elevating platform (3) in the slide, and water tank (4) have been placed to elevating platform (3) bottom surface, the first outlet pipe (5) of circumference outer wall fixedly connected with of water tank (4), and one side of first outlet pipe (5) is equipped with first control valve (6), the upper surface of workstation (1) is equipped with lifting unit, be equipped with water supply mechanism in workstation (1), a plurality of delivery ports have been seted up to the circumference outer wall of metal drum (8), and there are second outlet pipe (9) in a plurality of outlet ports swing joint respectively, Overflow pipe (13) and pressure-measuring pipe (14), one side of second outlet pipe (9) is equipped with second control valve (10), the circumference outer wall swing joint of second outlet pipe (9) has third outlet pipe (11), and one side of third outlet pipe (11) is equipped with third control valve (12), graduated flask (32) are placed in the upper surface of workstation (1) and are located the below of second outlet pipe (9), the one end swing joint of pressure-measuring pipe (14) is at the top of workstation (1), the circumference outer wall joint of pressure-measuring pipe (14) has gusset plate (15), and gusset plate (15) are fixed mutually with support frame (2), swing joint has first filter plate (27) and second filter plate (28) respectively in metal cylinder (8), is equipped with between first filter plate (27) and second filter plate (28) and puts material room (29).
2. The geotechnical test penetration device convenient to measure according to claim 1, wherein the lifting assembly comprises a mounting seat (19), the mounting seat (19) is fixedly connected to the upper surface of the workbench (1), the top of the mounting seat (19) is fixedly connected with two mounting plates (20), a rocker (22) is movably connected between the two mounting plates (20), the circumferential outer wall of the rocker (22) is fixedly connected with a take-up pulley (21), the circumferential outer wall of the take-up pulley (21) is movably connected with a lifting rope (31), pulleys (30) are fixedly connected to one side of the support frame (2) and the inner wall of the top, the other end of the lifting rope (31) passes through the two pulleys (30) and is fixed with the lifting platform (3), a sliding groove (23) is formed in the top of the mounting seat (19), and a sliding plate (24) is movably connected in the sliding groove (23), a control bolt (26) is movably connected in the sliding plate (24), a limiting plate (25) is fixedly connected to the top of the mounting seat (19), and one end of the control bolt (26) penetrates through the sliding plate (24) to be movably connected with the limiting plate (25).
3. The soil test penetration device convenient for measurement according to claim 1, wherein the water supply mechanism comprises a tap water pipe (16), the tap water pipe (16) is fixedly connected to the inner wall of one side of the workbench (1), the other end of the tap water pipe (16) penetrates through the top of the workbench (1) and is positioned above the water tank (4), a tap water control valve (17) is arranged on one side of the tap water pipe (16), a reinforcing block (18) is fixedly connected to the outer wall of the circumference of the tap water pipe (16), and the reinforcing block (18) is fixed with the support frame (2).
4. The geotechnical test penetration device convenient for measurement according to claim 1, wherein one end of the first water outlet pipe (5) is movably connected with a telescopic pipe (7).
5. The geotechnical test penetration device convenient for measurement according to claim 1, wherein one side of the support frame (2) is provided with a graduated scale.
6. The geotechnical test penetration device convenient for measurement according to claim 1, wherein one side of the lifting platform (3) is provided with a positioning block (33).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202122893556.6U CN216208446U (en) | 2021-11-24 | 2021-11-24 | Geotechnical test permeation device convenient to measure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202122893556.6U CN216208446U (en) | 2021-11-24 | 2021-11-24 | Geotechnical test permeation device convenient to measure |
Publications (1)
Publication Number | Publication Date |
---|---|
CN216208446U true CN216208446U (en) | 2022-04-05 |
Family
ID=80913815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202122893556.6U Expired - Fee Related CN216208446U (en) | 2021-11-24 | 2021-11-24 | Geotechnical test permeation device convenient to measure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN216208446U (en) |
-
2021
- 2021-11-24 CN CN202122893556.6U patent/CN216208446U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111337650B (en) | Multifunctional test device for researching seepage damage mechanism of underground engineering soil body | |
CN101739882B (en) | Confined water and phreatic water compound simulation experiment device | |
CN202928929U (en) | Consolidation and penetration test device for soil under chemical-stress coupling effect | |
CN112268848A (en) | Coarse-grained soil vertical osmotic deformation tester and experimental method | |
CN111665169A (en) | Automatic measuring device and measuring method for drilling fluid performance | |
CN108645772A (en) | A kind of rainfall infiltration experimental system for simulating considering slope runoff | |
CN104677802B (en) | Multifunctional linkage device integrating sewage time-sharing sampling and permeation coefficient testing and working method of multifunctional linkage device | |
CN209167305U (en) | A kind of full-automatic constant head Seep- Solidifying cross matching device | |
CN209690137U (en) | Coarse-grained soil permeability critical gradient deformeter | |
CN216208446U (en) | Geotechnical test permeation device convenient to measure | |
CN115165702A (en) | Large-size soil body permeability test device and method capable of adjusting water head and seepage direction | |
Jamison et al. | Durable asbestos tension tables | |
CN102879313A (en) | Device for testing consolidation and permeation of soil under action of coupling of chemistry and stress | |
CN104880387B (en) | One kind measures repellency soil contact angle experimental rig | |
CN2718706Y (en) | Self-circulating darcy law experimental instrument | |
CN113552037A (en) | Device and method for testing dual-porosity seepage parameters of garbage | |
CN117074270A (en) | Test method for low-stress soft soil consolidation | |
CN109556668B (en) | Artificial simulation runoff generating device | |
CN212748623U (en) | Drilling fluid performance automatic measuring device | |
CN210982159U (en) | Continuous negative pressure water replenishing metering device | |
CN214224894U (en) | Stress-related coarse-grained soil seepage deformation characteristic tester | |
CN211057932U (en) | Water supply device for osmotic deformation instrument | |
CN115662258A (en) | Indoor model structure for simulating heavy rainfall based on slope stability research | |
CN210180880U (en) | Penetration test system | |
CN206311457U (en) | The automatic testing equipment that a kind of Corrosion Reinforcement section is axially distributed |
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: 20220405 |
|
CF01 | Termination of patent right due to non-payment of annual fee |