CN204663906U - A kind of magnetic drive pump of architecture advances - Google Patents
A kind of magnetic drive pump of architecture advances Download PDFInfo
- Publication number
- CN204663906U CN204663906U CN201520364179.9U CN201520364179U CN204663906U CN 204663906 U CN204663906 U CN 204663906U CN 201520364179 U CN201520364179 U CN 201520364179U CN 204663906 U CN204663906 U CN 204663906U
- Authority
- CN
- China
- Prior art keywords
- pump
- bearing
- magnet rotor
- magnetic drive
- impeller
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 24
- HQVNEWCFYHHQES-UHFFFAOYSA-N Silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000009837 dry grinding Methods 0.000 abstract description 4
- 230000002708 enhancing Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 231100000614 Poison Toxicity 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- -1 chemical industry Substances 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model relates to a kind of magnetic drive pump of architecture advances, pump shaft (7) and impeller (2) pass through the first radial contact bearing (9) in pump chamber, second radial contact bearing (11), second axial ball bearing (10) supports to be installed, the axial ball bearing of installation first (8) is coordinated between pump chamber inwall with interior magnet rotor (5), the dynamic balancing that the magnetic drive pump of this structure effectively can control impeller (2) is bad, the axial float of effective control pump shaft (7) and impeller (2), greatly reduce the heat that friction generates, can the no load running when disappearance and the cutout of pumping liquid within a certain period of time, enhance the anti-dry grinding performance of magnetic drive pump, improve the security of operation of magnetic drive pump, pump chamber inner piece all selects resistant material to make, improve the decay resistance of magnetic drive pump.
Description
Technical field
The utility model relates to a kind of magnetic drive pump, particularly a kind of magnetic drive pump of architecture advances.
Background technique
Magnetic drive pump is different from traditional canned pump, motor crankshaft is not directly connected with pump shaft, but motor crankshaft drives outer magnet rotor to rotate, and outer magnet rotor and interior magnet rotor fit through magnetic force and drive interior magnet rotor to rotate, drive pump shaft to rotate by interior magnet rotor, make the vane rotor rotation work on pump shaft.The Seal cage that separation sleeve is formed is provided with between inner magnet rotor of magnetic drive pump and outer magnet rotor, pump shaft and interior magnet rotor are enclosed in Seal cage, one can avoid liquid by pump shaft end externally seepage, two can cool pump shaft and interior magnet rotor, therefore without the need to taking traditional dynamic seal (packing) just can obtain very excellent No leakage characteristic to pump shaft, thus be widely used in carrying various severe toxicity, the danger medium such as inflammable, explosive, play important function in fields such as oil, chemical industry, medicine, nuclear power, national defence.Sliding bearing due to magnetic drive pump inner support pump shaft utilizes institute's course of conveying fluid to lubricate, and this process-liquid often lubricity is poor; Secondly, in production environment, often can run into liquid in pump and be evacuated or the situation such as liquid minimizing, can produce " no load running ", be commonly called as " dry grinding ", and " dry grinding " can make sliding bearing fast heating at short notice, and and wearing and tearing between pump shaft accelerate; In addition, the solid be dispersed in working fluid can produce potential bearing or the grinding of journal surface.The build-up effect of these times can cause bearing premature abrasion, and result causes pump shaft substantial deviation rotating center, and interior magnet rotor and separation sleeve rub, and it is rapidly that separation sleeve is worn out and produce high heat, cause dielectric leakage, the poisonous inflammable and explosive material that waits spreads, and even causes major disaster accident.
Impeller due to material uneven, the accumulation of blank defect, machining error, assembly error etc., and the asymmetry geometrical shape etc. existed during design, make its non-uniform mass, form certain bias, when the impeller is rotated, produce unbalanced centrifugal inertia force, thus making pump produce vibration and noise, the bad expected service life that can reduce equipment of dynamic balancing, shows the earlier period damage of bearing especially, the maintenance period of shortening equipment, the maintenance cost of increase equipment, affects quality of product, aggravating working environment etc.
Summary of the invention
In order to solve the problem that above-mentioned prior art is difficult to overcome, the utility model provides a kind of magnetic drive pump of architecture advances, comprise the pump housing 1, pump cover 3, pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, separation sleeve 4, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, separation sleeve 4 and pump cover 3 body seal are fixedly connected, the described pump housing 1, pump cover 3 and separation sleeve 4 are connected into entirety, the pump chamber that composition is closed, it is characterized in that: the pump housing 1 inwall with coordinate installation first radial contact bearing 9 between impeller 2, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, the axial ball bearing 8 of installation first is coordinated between pump chamber inwall with interior magnet rotor 5.
As further improvement of the utility model, described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, and the pump housing 1 inwall has pump housing groove 31, coordinates installation first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
As further improvement of the utility model, described first radial contact bearing 9 comprises rolling element 14, slider 15, bearing inner race 16, bearing outer ring 17, described second radial contact bearing 11 comprises rolling element 24, slider 25, bearing inner race 26, bearing outer ring 27, the material that described rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, bearing inner race 16, 26 and bearing outer ring 17, 27 materials selected are the one in stupalith and ptfe composite, slider 15 and 25 the selection of material is stupalith, one in stainless steel and ptfe composite.
As further improvement of the utility model, described first axial ball bearing 8 comprises annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 comprises annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is the one in stupalith, stainless steel and ptfe composite, thrust ring 19,29,32 and 33 Ceramics material, ball 20 and 30 the selection of material is the one in gas Pressure Sintered Silicon Nitride, hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material.
The beneficial effects of the utility model are: magnetic drive pump pump shaft 7 and impeller 2 pass through the first radial contact bearing 9 in pump chamber, second radial contact bearing 11, second axial ball bearing 10 supports to be installed, the axial ball bearing 8 of installation first is coordinated between pump chamber inwall with interior magnet rotor 5, the dynamic balancing that the magnetic drive pump of this structure effectively can control impeller 2 is bad, the axial float of effective control pump shaft 7 impeller 2, greatly reduce the heat that friction generates, can the no load running when disappearance and the cutout of pumping liquid within a certain period of time, enhance the anti-dry grinding performance of magnetic drive pump, improve the security of operation of magnetic drive pump, pump shaft 7 in pump chamber, impeller 2, first radial contact bearing 9, second radial contact bearing 11, what the first axial ball bearing 8 and the second axial ball bearing 10 were selected is all that resistant material is made, improve the decay resistance of magnetic drive pump.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the first radial contact bearing 9 sectional view.
Fig. 3 is the second radial contact bearing 11 sectional view.
Embodiment
Embodiment one: a kind of magnetic drive pump of architecture advances, comprise the pump housing 1, pump cover 3, pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6 and separation sleeve 4, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, separation sleeve 4 is fixedly connected with pump cover 3 body seal, be fastenedly connected between the pump housing 1 and pump cover 3, the pump housing 1, pump cover 3, separation sleeve 4 is closed and is formed pump chamber, during magnetic drive pump work, outer magnet rotor 6 is driven to rotate by external motivating force, in being driven by magnetic force between outer magnet rotor 6 and interior magnet rotor 5, magnet rotor 5 rotates, interior magnet rotor 5 drives pump shaft 7 to rotate, impeller 2 is installed on pump shaft 7 by key and keyway, impeller 2 is along with pump shaft 7 together rotary work, pump shaft 7 and impeller 2 all select stainless steel material, the pump shaft 7 that this kind of material is made and impeller 2 have corrosion resistance, moldability, obdurability in compatibility and wide range.
The described magnetic drive pump pump housing 1 inwall with coordinate installation first radial contact bearing 9 between impeller 2, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, the axial ball bearing 8 of installation first is coordinated between pump chamber inwall with interior magnet rotor 5, the dynamic balancing that the magnetic drive pump of this structure effectively can control impeller 2 is bad, the axial float of effective control pump shaft 7 impeller 2, improves the security of operation of magnetic drive pump.
Described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, and the pump housing 1 inwall has pump housing groove 31, coordinates installation first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
Described first radial contact bearing 9 comprises rolling element 14, slider 15, bearing inner race 16, bearing outer ring 17, described second radial contact bearing 11 comprises rolling element 24, slider 25, bearing inner race 26, bearing outer ring 27, described rolling element 14 and 24 can be roller or ball, cushion collar 13 is provided with between bearing inner race 16 and pump housing groove 31 counterface, bearing outer ring 17 and impeller groove 21 end face are provided with cushion collar 12, cushion collar 23 is provided with between bearing inner race 26 and pump shaft 7, cushion collar 22 is provided with between bearing outer ring 27 and pump chamber inwall, can prevent because of medium temperature too high time the thermal expansion that causes damage is caused to bearing, the material that rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, bearing inner race 16, 26 and bearing outer ring 17, 27 materials selected are the one in stupalith and ptfe composite, slider 15 and 25 the selection of material is stupalith, one in stainless steel and ptfe composite, the radial contact bearing that described material is made, wear-resisting, corrosion resistant performance is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Described first axial ball bearing 8 comprises annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 comprises annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is stupalith, one in stainless steel and ptfe composite, thrust ring 19, 29, 32 and 33 Ceramics materials, ball 20 and 30 the selection of material is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, the axial ball bearing corrosion resistant that described material is made, wear-resisting property is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Embodiment two: a kind of magnetic drive pump of architecture advances, comprise the pump housing 1, pump cover 3, pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6 and separation sleeve 4, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, separation sleeve 4 is fixedly connected with pump cover 3 body seal, be fastenedly connected between the pump housing 1 and pump cover 3, the pump housing 1, pump cover 3, separation sleeve 4 is closed and is formed pump chamber, during magnetic drive pump work, outer magnet rotor 6 is driven to rotate by external motivating force, in being driven by magnetic force between outer magnet rotor 6 and interior magnet rotor 5, magnet rotor 5 rotates, interior magnet rotor 5 drives pump shaft 7 to rotate, impeller 2 is installed on pump shaft 7 by key and keyway, impeller 2 is along with pump shaft 7 together rotary work, described pump shaft 7 Ceramics material, pump shaft 7 should be able to bear moment of torsion, the loads such as moment of flexure, the pump shaft 7 that described material is made is wear-resisting, corrosion resistant, heatproof, comprehensive mechanical performance is good.
The described magnetic drive pump pump housing 1 inwall with coordinate installation first radial contact bearing 9 between impeller 2, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, the axial ball bearing 8 of installation first is coordinated between pump chamber inwall with interior magnet rotor 5, the magnetic drive pump of this structure effectively can control the bad vibration & noise caused of dynamic balancing of impeller 2, the axial float of effective control pump shaft 7 impeller 2, improves the security of operation of magnetic drive pump.
The described pump housing 1 and pump cover 3 are with metal shell inner lining fluoroplastics, described impeller 2 adopts metal insert coated with fluoroplastic, there is excellent corrosion resistance and good rigidity, and can shock-resistant, vibration resistance and warp resistance, described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, the pump housing 1 inwall has pump housing groove 31, coordinates installation first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
Described first radial contact bearing 9 comprises rolling element 14, slider 15, bearing inner race 16, bearing outer ring 17, described second radial contact bearing 11 comprises rolling element 24, slider 25, bearing inner race 26, bearing outer ring 27, described rolling element 14 and 24 can be roller or ball, the material that rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, bearing inner race 16, 26 and bearing outer ring 17, 27 materials selected are the one in stupalith and ptfe composite, slider 15 and 25 the selection of material is stupalith, one in stainless steel and ptfe composite, the radial contact bearing that described material is made, wear-resisting, corrosion resistant performance is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Described first axial ball bearing 8 comprises annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 comprises annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is stupalith, one in stainless steel and ptfe composite, thrust ring 19, 29, 32 and 33 Ceramics materials, ball 20 and 30 the selection of material is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, the axial ball bearing corrosion resistant that described material is made, wear-resisting property is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. the magnetic drive pump of an architecture advances, comprise the pump housing (1), pump cover (3), pump shaft (7), impeller (2), interior magnet rotor (5), outer magnet rotor (6), separation sleeve (4), interior magnet rotor (5) is fixedly mounted on pump shaft (7) axle head, outer magnet rotor (6) is arranged on motor shaft end, separation sleeve (4) is set between interior magnet rotor (5) and outer magnet rotor (6), separation sleeve (4) is fixedly connected with pump cover (3) body seal, the described pump housing (1), pump cover (3) and separation sleeve (4) are connected into entirety, the pump chamber that composition is closed, it is characterized in that: between the pump housing (1) inwall with impeller (2), coordinate installation first radial contact bearing (9), pump shaft (7) is supported by the second axial ball bearing (10) and the second radial contact bearing (11) and is installed in pump chamber, the axial ball bearing of installation first (8) is coordinated between pump chamber inwall with interior magnet rotor (5).
2. magnetic drive pump according to claim 1, it is characterized in that: described impeller (2) has impeller groove (21) near the pump housing (1) inwall side, the pump housing (1) inwall has pump housing groove (31), coordinates installation first radial contact bearing (9) between impeller groove (21) and pump housing groove (31).
3. magnetic drive pump according to claim 1, it is characterized in that: described first radial contact bearing (9) comprises rolling element (14), slider (15), bearing inner race (16), bearing outer ring (17), described second radial contact bearing (11) comprises rolling element (24), slider (25), bearing inner race (26), bearing outer ring (27), the material that described rolling element (14) and (24) are selected is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, bearing inner race (16), and bearing outer ring (17) (26), (27) material selected is the one in stupalith and ptfe composite, slider (15) and (25) the selection of material are stupalith, one in stainless steel and ptfe composite.
4. magnetic drive pump according to claim 1, it is characterized in that: described first axial ball bearing (8) comprises annular retainer (18), ball (20), thrust ring (19) and (33), described second axial ball bearing (10) comprises annular retainer (28), ball (30), thrust ring (29) and (32), described annular retainer (18) and (28) the selection of material are stupalith, one in stainless steel and ptfe composite, thrust ring (19), (29), and (33) Ceramics material (32), ball (20) and (30) the selection of material are gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520364179.9U CN204663906U (en) | 2015-05-28 | 2015-05-28 | A kind of magnetic drive pump of architecture advances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520364179.9U CN204663906U (en) | 2015-05-28 | 2015-05-28 | A kind of magnetic drive pump of architecture advances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663906U true CN204663906U (en) | 2015-09-23 |
Family
ID=54134294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520364179.9U Active CN204663906U (en) | 2015-05-28 | 2015-05-28 | A kind of magnetic drive pump of architecture advances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663906U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286316A (en) * | 2015-05-28 | 2017-01-04 | 昆山江津长抗干磨磁力泵有限公司 | The magnetic drive pump that a kind of structure is improved |
| CN107013482A (en) * | 2016-01-27 | 2017-08-04 | 昆山江津长抗干磨磁力泵有限公司 | A kind of drive mechanism of centrifugal pump |
| CN111594481A (en) * | 2020-05-28 | 2020-08-28 | 沈阳工业大学 | Low-eddy-loss high-efficiency magnetic pump |
-
2015
- 2015-05-28 CN CN201520364179.9U patent/CN204663906U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286316A (en) * | 2015-05-28 | 2017-01-04 | 昆山江津长抗干磨磁力泵有限公司 | The magnetic drive pump that a kind of structure is improved |
| CN107013482A (en) * | 2016-01-27 | 2017-08-04 | 昆山江津长抗干磨磁力泵有限公司 | A kind of drive mechanism of centrifugal pump |
| CN111594481A (en) * | 2020-05-28 | 2020-08-28 | 沈阳工业大学 | Low-eddy-loss high-efficiency magnetic pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203670229U (en) | Magnetic drive pump resistant to corrosion and dry grinding | |
| CN204663907U (en) | A kind of magnetic drive pump of full slip transmission | |
| CN203822685U (en) | Fluoroplastic magnetic drive pump capable of approximate zero inner leakage | |
| CN204663906U (en) | A kind of magnetic drive pump of architecture advances | |
| CN203822654U (en) | Stainless steel magnetic drive pump capable of approximate zero inner leakage | |
| CN204805110U (en) | Magnetic drive pump of institutional advancement | |
| CN202402644U (en) | Floating ring sealing device | |
| CN107786024B (en) | Landing bearing assembly and rotary machine equipped with such an assembly and a magnetic bearing | |
| CN105987006B (en) | A kind of magnetic force middle-opening pump of corrosion-resistant anti-dry grinding | |
| CN203822650U (en) | Dry milling resistant fluoroplastic magnetic drive pump | |
| CN211397914U (en) | Two-end supporting type single-sealing multistage centrifugal pump | |
| CN204805111U (en) | Magnetic drive pump of institutional advancement | |
| US2468246A (en) | Rotary pump for liquefied gases | |
| CN108591473B (en) | Mechanical sealing device | |
| CN204646691U (en) | A kind of magnetic force middle-opening pump of corrosion-resistant anti-dry grinding | |
| CN203394770U (en) | Magnetic drive pump | |
| CN106286316A (en) | The magnetic drive pump that a kind of structure is improved | |
| CN104776033A (en) | Corrosion resistance and dry grinding resistance magnetic drive pump | |
| CN203476785U (en) | Sealing ring with improved structure | |
| CN105020147A (en) | Nearly-zero inner leakage stainless steel magnetic drive pump | |
| CN203476723U (en) | Magnetic pump with improved structure | |
| US913407A (en) | Shaft-packing. | |
| CN107191596A (en) | A kind of non-contact mechanical seal and the seal assembly for preventing lubrication leakage | |
| CN203532749U (en) | High-speed and high-pressure mechanical sealing device | |
| CN104179718A (en) | Sealing ring with improved structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |