CN204805150U - Move sealing device - Google Patents
Move sealing device Download PDFInfo
- Publication number
- CN204805150U CN204805150U CN201520035804.5U CN201520035804U CN204805150U CN 204805150 U CN204805150 U CN 204805150U CN 201520035804 U CN201520035804 U CN 201520035804U CN 204805150 U CN204805150 U CN 204805150U
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- China
- Prior art keywords
- ring
- elastic component
- dynamic seal
- pump
- seal apparatus
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides a move sealing device for pump shaft end sealed, this move sealing device with the pump shaft coaxial coupling is located between the pump cover and pump rachis of dish washer washing pump, including static device and floating installation. The utility model discloses a static device is non - compensation arrangement, and the floating installation is compensation arrangement, and the two terminal surface is laminated each other, adopts spring and elastic component to make sealed face more well laminate again, has ensured effective compensation of floating installation and provides the cushion effect. This move sealing device has reliable a, long service life of sealed effect, and the maintenance cycle length, friction power consumption is few and axle reel shaft cover does not receive the advantage of wearing and tearing.
Description
Technical field
The utility model relates to a kind of mechanical seal device, particularly relates to a kind of dynamic seal apparatus for pump shaft end seal.
Background technique
Dishwasher is used to the equipment automatically cleaning the tablewares such as bowl, chopsticks, dish, dish, cutter, fork, can be divided into the box and large class of transmitted type two by structure.It is dining room, hotel, institutional settings dining room kitchen alleviate labor intensity, improve working efficiency, and promote sanitation and hygiene.Now, multiple mini-dishwasher goes on the market, and just progresses into ordinary family.
The main working parts of dishwasher is washer pump, and washer pump has important function in dishwasher process.The liquid flowing through washer pump contains the liquid of washing agent and dining residue, very large to the damage of washer pump, and the time has been grown and easily caused washer pump to produce the phenomenon revealed, and therefore needs seal arrangement to prevent the leakage of liquid to its sealing.
Mechanical seal is the common seal arrangement be applied in pump, it is by least one pair of seal face perpendicular to spin axis, under hydrodynamic pressure and compensation mechanism elastic force (or magnetic force) acting in conjunction, and under the cooperation of auxiliary seal ring, seal face keeps laminating and relative sliding, and the device that the anti-fluid of composition is leaked.
Mechanical seal of the prior art designs for the liquid property flowing through pump, and as CN102472393A discloses a kind of mechanical seal, it is mainly used in the turbomachine sealing in parallel that cooling fluid circulates near sealing surface; CN102182701A discloses a kind of mechanical seal, it by arranging rigid backbone on the axle sleeve coordinated with rotating ring and/or the stationary seat coordinated with stationary ring, the outside bag of described rigid backbone is provided with anti-corrosion layer to reach length service time, to seal reliable object, but structure is more complicated; A kind of mechanical seal that CN101490453A discloses, sealing device can be applied to the rotating equipment of nearly all industrial class.
Model utility content
For the problem lacking Washing pump of bowl-washing machines mechanical seal in prior art, the utility model provides a kind of dynamic seal apparatus being applied to Washing pump of bowl-washing machines, this dynamic seal apparatus has that sealing effect is reliable, long service life, service cycle is long, friction horsepower consumption less with axle or the not frayed advantage of axle sleeve.
For achieving the above object, the utility model is by the following technical solutions:
The utility model provides a kind of dynamic seal apparatus, and for the sealing of pump shaft end, this dynamic seal apparatus is coaxially connected with described pump shaft, between pump cover and pump rachis, comprises stationary apparatus and floating installation, wherein:
Described stationary apparatus comprises flat circular stationary ring and a seal ring, and described seal ring is enclosed within to seal on this stationary ring one end face, with described pump cover and contacts, and the other end of described stationary ring contacts with described floating installation and connects;
Described floating installation comprises rotating ring that can be freely movable, elastic component and the spring be enclosed within this elastic component, described rotating ring is fixed on pump shaft by elastic component sealing, one end face of described rotating ring contacts with described stationary ring, other end contacts with described elastic component, described elastic component is a tubulose, it is respectively provided with the boss radially outwards extended end to end, head boss diameter is not less than described rotating ring diameter, afterbody boss diameter is less than head boss diameter, one side of head boss contacts with described rotating ring, its another side provides compression supporting surface for the spring be enclosed within tubular elastomeric part, for described spring-compressed is between described rotating ring and described pump rachis.
In a preferred embodiment of above-mentioned dynamic seal apparatus, between described rotating ring and described stationary ring, a rotating seat is also set, the end face contacted with described stationary ring at this rotating seat radially extends internally a stop part, other end is to axially extended inclined-plane, hold described rotating ring and described elastic component in the cylindrical cavity of described rotating seat, described rotating ring and described elastic component are limited in the cylindrical cavity of described rotating seat by described inclined-plane.
Wherein, the end face that described rotating ring contacts with the head boss of described elastic component radially stretches out a limiting unit, by the stop part on described rotating seat, described rotating ring is limited in described rotating seat, and the other end of described rotating ring contacts with described stationary ring.
In another preferred embodiment of above-mentioned dynamic seal apparatus, between the compression supporting surface of described elastic component and described spring, a spring seat is also set, the end face contacted with described compression supporting surface at this spring seat radially extends internally a back-up ring, and described spring action is on this back-up ring.
In a preferred embodiment of above-mentioned dynamic seal apparatus, also arrange a fastening piece and described pump rachis close contact at the end of described floating installation, described fastening piece is a multiple stage rank securing means; One end is have minimum diameter stepped part with crimping, and this stepped part is stuck in the groove be located in the middle part of described elastic component; Its other end is have maximum diameter stepped part with the platform extended radially outwardly, and this platform provides another compression supporting surface for spring; Described fastening piece is arranged to the transition portion of maximum diameter stepped part along the outer rim of the afterbody boss of described elastic component by minimum diameter stepped part.
For better realizing the effect sealed, the material of the utility model to above-mentioned each parts has done further restriction, wherein, the material of described stationary ring be selected from pottery, plastics, material with carbon element, composite material any one or multiple, be more preferably pottery; The material of described seal ring and described elastic component is preferably rubber; The material of described rotating ring is preferably fluoro-containing plastic, is more preferably teflon; The material of described rotating seat or described spring seat be selected from stainless steel, aluminium, copper any one or multiple, be more preferably stainless steel.
Above-mentioned dynamic seal apparatus is in installation process, first seal ring is enclosed within an end face of stationary ring, the stationary ring of seal ring is had to be fixed on pump cover in cover again, then in the cylindrical cavity of rotating seat, rotating ring, elastic component, spring seat and spring is put into successively, rotating ring is fixed in rotating seat by the stop part of rotating seat by the limiting unit of one end, and the other end of rotating ring is stretched out rotating seat and contacted with stationary ring; Wherein, the bottom (outer side surface) of the head boss that elastic component diameter is larger contacts with the limiting unit of rotating ring, and the inner side surface of head boss provides compression supporting surface, by spring-compressed between rotating ring and pump rachis for the spring be enclosed within elastic component.
Alternatively, described dynamic seal apparatus is fixed between pump cover and pump rachis by fastening piece at the tail end of the floating installation of the utility model dynamic seal apparatus.
Stationary apparatus of the present utility model is non-compensation device, and floating installation is compensation device, and the two end face is bonded to each other, then adopts spring and elastic component that sealing surface is fitted more well, has ensured the effective compensation of floating installation and has provided cushion effect.
Adopt technique scheme, the pressure maximum that described dynamic seal apparatus is used for can bearing in dishwasher is 0.6bar, and the speed range that can bear is at 2750-5500rpm, and the temperature range can bearing solution in dishwasher is 20-100 DEG C.
Dynamic seal apparatus described in the utility model also can be used for the sealing of other pump shaft end except Washing pump of bowl-washing machines.
The utility model adopts technique scheme, compared with prior art, has following technique effect:
1, sealing is reliable, in longer spreadable life, can not leak or small leaks;
2, long service life, the mechanical seal of selecting properly friction pair material and specific pressure can with 1 ~ 2 year;
3, service cycle is long, when normal work, does not need repairing;
4, friction horsepower consumption is few;
5, axle or axle sleeve are not frayed.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of the utility model dynamic seal apparatus;
Fig. 2 is the scheme of installation of the utility model dynamic seal apparatus at Washing pump of bowl-washing machines;
Fig. 3 is the blasting type erection drawing of the utility model dynamic seal apparatus;
Fig. 4 is the structural representation after the assembling of the utility model dynamic seal apparatus;
Fig. 5 is the schematic perspective view of the stationary ring 11 of the utility model dynamic seal apparatus;
Fig. 6 is the schematic perspective view of the seal ring 12 of the utility model dynamic seal apparatus;
Fig. 7 is the schematic perspective view of the rotating ring 21 of the utility model dynamic seal apparatus;
Fig. 8 is the schematic perspective view of the rotating seat 22 of the utility model dynamic seal apparatus;
Fig. 9 is the schematic perspective view of the elastic component 23 of the utility model dynamic seal apparatus;
Figure 10 is the schematic perspective view of the spring seat 24 of the utility model dynamic seal apparatus;
Figure 11 is the schematic perspective view of the fastening ring 26 of the utility model dynamic seal apparatus;
In figure:
1-stationary apparatus,
11-stationary ring,
12-seal ring,
2-floating installation,
21-rotating ring,
211-limiting unit,
22-rotating seat,
221-stop part,
222-cylindrical cavity,
223-inclined-plane,
23-elastic component,
231-head boss,
232-afterbody boss,
233-compresses supporting surface,
234-groove,
24-spring seat,
241-back-up ring,
25-spring,
26-fastening ring,
261-crimping,
262-minimum diameter stepped part,
263-maximum diameter stepped part,
264-platform,
3-pump cover,
4-pump shaft,
5-pump rachis.
Embodiment
Carry out detailed and concrete introduction below by specific embodiment to the utility model, to make better to understand the utility model, but following embodiment does not limit the utility model scope.
Composition graphs 1 and Fig. 2, the utility model provides a kind of dynamic seal apparatus, and for the sealing of dishwasher pump axle head, this dynamic seal apparatus is connected with described pump shaft 4 axle, between the pump cover 3 and pump rachis 5 of dishwasher pump, comprises stationary apparatus 1 and floating installation 2, wherein:
Described stationary apparatus 1 comprises flat circular stationary ring 11 (as shown in Figure 5) and a seal ring 12 (as shown in Figure 6), described seal ring 12 is enclosed within to seal on this stationary ring 11 1 end face, with the pump cover 3 of described Washing pump of bowl-washing machines and contacts, and the other end of described stationary ring 11 contacts with described floating installation 2 and connects;
Described floating installation 2 as shown in Figure 3, comprise can be freely movable rotating ring 21, elastic component 23 and the spring 25 be enclosed within this elastic component, described rotating ring 21 is fixed on pump shaft 4 by elastic component 23 sealing, one end face of described rotating ring 21 contacts with described stationary ring 11, other end contacts with described elastic component 23, described elastic component 23 is a tubulose (as shown in Figure 9), it is respectively provided with the boss radially outwards extended end to end, head boss 231 diameter is not less than described rotating ring 21 diameter, afterbody boss 232 diameter is less than head boss 231 diameter, one side of head boss 231 contacts with described rotating ring 21, supporting surface 233 is compressed for the spring 25 be enclosed within tubular elastomeric part 23 provides in its another side, for described spring 25 is compressed between described rotating ring 21 and described pump rachis 5.
One rotating seat 22 is also set between described rotating ring 21 and described stationary ring 11, as shown in Figure 8, the end face contacted with described stationary ring 11 at this rotating seat 22 radially extends internally a stop part 221, other end is to axially extended inclined-plane 223, hold described rotating ring 21 and described elastic component 23 in the cylindrical cavity 222 of described rotating seat 22, described rotating ring 21 and described elastic component 23 are limited in the cylindrical cavity 222 of described rotating seat 22 by described inclined-plane 223.
The end face that described rotating ring 21 contacts with the head boss 231 of described elastic component 23 radially stretches out a limiting unit 211 (as shown in Figure 7), by the stop part 221 on described rotating seat 22, described rotating ring 21 is limited in described rotating seat 22, and the other end of described rotating ring 21 contacts with described stationary ring 11.
One spring seat 24 is also set between the compression supporting surface 233 of described elastic component 23 and described spring 25, the end face contacted with described compression supporting surface 233 at this spring seat 24 radially extends internally a back-up ring 241 (as shown in Figure 10), and described spring 25 acts on this back-up ring 241.
Also arrange a fastening piece 26 and described pump rachis 5 close contact (as illustrated in fig. 1 and 2) at the end of described floating installation 2, described fastening piece is a multiple stage rank securing means (as shown in figure 11); One end is have minimum diameter stepped part 262 with crimping 261, and this stepped part 262 is stuck in the groove 234 be located in the middle part of described elastic component 23; Its other end is have maximum diameter stepped part 263 with the platform 264 extended radially outwardly, and this platform 264 provides another compression supporting surface for spring 25; Described fastening piece 26 is arranged to the transition portion of maximum diameter stepped part 263 along the outer rim of the afterbody boss 232 of described elastic component 23 by minimum diameter stepped part 262.
For better realizing the effect sealed, the material of the utility model to above-mentioned each parts has done further restriction, and wherein, the material of described stationary ring 11 is preferably pottery; The material of described seal ring 12 and described elastic component 23 is preferably rubber; The material of described rotating ring 21 is preferably fluoro-containing plastic, is more preferably teflon; The material of described rotating seat 22, described spring seat 24, described spring 25, described fastening piece 26 is preferably stainless steel, is more preferably 304 stainless steels.
Above-mentioned dynamic seal apparatus in installation process, composition graphs 1-11:
1) first seal ring 12 is enclosed within an end face of stationary ring 11, forms stationary apparatus 1.
2) then in the cylindrical cavity 222 of rotating ring 22, rotating ring 21, elastic component 23 is put into successively, rotating ring 21 is fixed in rotating seat 22 by the stop part 221 of rotating seat 22 by the limiting unit 211 of one end, and the other end of rotating ring 21 is stretched out rotating seat 22 with stationary ring 11 and contacted; Wherein, the bottom (outer side surface) of the head boss 231 that elastic component 23 diameter is larger contacts with the limiting unit 211 of rotating ring 21; Finally successively spring seat 24, fastening piece 26 and spring 25 are enclosed within elastic component 23, wherein the minimum diameter stepped part 262 of fastening piece 26 is stuck in the groove 234 of elastic component 23, the inner side surface of the head boss 231 of elastic component 23 compresses supporting surface 233 for the spring 25 be enclosed within elastic component 23 provides, the platform 264 of fastening piece 26 provides another compression supporting surface for spring 25, is compressed between rotating ring 21 and fastening piece 26 by spring 25.Such formation floating installation 2.
3) stationary apparatus 1 assembled and floating installation 2 are arranged between the pump cover 3 of Washing pump of bowl-washing machines and pump rachis 5 according to the position shown in Fig. 2.
Stationary apparatus 1 of the present utility model is non-compensation device, and floating installation 2 is compensation device, and the two end face is bonded to each other, has ensured the effective compensation of floating installation 2 and has provided cushion effect.
Adopt technique scheme, described dynamic seal apparatus is applicable to the solution containing acid, alkali and grease, it to the requirement of working environment is: working depth is when 11.0 ± 0.5 scope, sealing total pressure is in the scope of 1.3 ± 0.4kg, rotation torque is 120mNM, pressure maximum for bearing in dishwasher is 0.6bar, and the speed range that can bear is at 2750-5500rpm, and the temperature range can bearing solution in dishwasher is 20-100 DEG C.
described dynamic seal apparatus is used for the Performance Detection in dishwasher:
Detect the performance of the dynamic seal apparatus that the utility model provides in general dish washer, it is under rotating speed 3500rpm, dry running 3h, sealing surface situation without exception; In 10 DEG C of-80 DEG C of water, open 9min, stop 1min, working life is not less than 6000h.
Therefore a kind of Washing pump of bowl-washing machines dynamic seal apparatus that the utility model provides has good sealability, and the time in working life is long simultaneously.
Be described in detail specific embodiment of the utility model above, but it is just as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the utility model is carried out and substituting also all among category of the present utility model.Therefore, not departing from the equalization conversion and amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
Claims (10)
1. a dynamic seal apparatus, for the sealing of pump shaft end, is characterized in that, this dynamic seal apparatus is coaxially connected with described pump shaft, between pump cover and pump rachis, comprises stationary apparatus and floating installation, wherein:
Described stationary apparatus comprises flat circular stationary ring and a seal ring, and described seal ring is enclosed within to seal on this stationary ring one end face, with described pump cover and contacts, and the other end of described stationary ring contacts with described floating installation and connects;
Described floating installation comprises rotating ring that can be freely movable, elastic component, be enclosed within the spring on this elastic component, described rotating ring is fixed on pump shaft by elastic component sealing, one end face of described rotating ring contacts with described stationary ring, other end contacts with described elastic component, described elastic component is a tubulose, it is respectively provided with the boss radially outwards extended end to end, head boss diameter is not less than described rotating ring diameter, afterbody boss diameter is less than head boss diameter, one side of head boss contacts with described rotating ring, its another side provides compression supporting surface for the spring be enclosed within tubular elastomeric part.
2. dynamic seal apparatus according to claim 1, it is characterized in that, between described rotating ring and described stationary ring, a rotating seat is also set, the end face contacted with described stationary ring at this rotating seat radially extends internally a stop part, other end is to axially extended inclined-plane, hold described rotating ring and described elastic component in the cylindrical cavity of described rotating seat, described rotating ring and described elastic component are limited in the cylindrical cavity of described rotating seat by described inclined-plane.
3. dynamic seal apparatus according to claim 2, it is characterized in that, the end face that described rotating ring contacts with the head boss of described elastic component radially stretches out a limiting unit, by the stop part on described rotating seat, described rotating ring is limited in described rotating seat, and the other end of described rotating ring contacts with described stationary ring.
4. dynamic seal apparatus according to claim 1, it is characterized in that, between the compression supporting surface of described elastic component and described spring, a spring seat is also set, the end face contacted with described compression supporting surface at this spring seat radially extends internally a back-up ring, and described spring action is on this back-up ring.
5. dynamic seal apparatus according to claim 1, is characterized in that, also arranges a fastening piece and described pump rachis close contact at the end of described floating installation, and described fastening piece is a multiple stage rank securing means; One end is have minimum diameter stepped part with crimping, and this stepped part is stuck in the groove be located in the middle part of described elastic component; Its other end is have maximum diameter stepped part with the platform extended radially outwardly, and this platform provides another compression supporting surface for spring; Described fastening piece is arranged to the transition portion of maximum diameter stepped part along the outer rim of the afterbody boss of described elastic component by minimum diameter stepped part.
6. dynamic seal apparatus according to claim 1, is characterized in that, the material of described stationary ring be selected from pottery, plastics, material with carbon element, composite material any one.
7. dynamic seal apparatus according to claim 6, is characterized in that, the material of described stationary ring is pottery.
8. dynamic seal apparatus according to claim 1, is characterized in that, the material of described seal ring and described elastic component is rubber.
9. dynamic seal apparatus according to claim 1, is characterized in that, the material of described rotating ring is teflon.
10. the dynamic seal apparatus according to claim 2 or 4, is characterized in that, the material of described rotating seat or described spring seat be selected from stainless steel, aluminium, copper any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520035804.5U CN204805150U (en) | 2015-01-19 | 2015-01-19 | Move sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520035804.5U CN204805150U (en) | 2015-01-19 | 2015-01-19 | Move sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805150U true CN204805150U (en) | 2015-11-25 |
Family
ID=54589985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520035804.5U Active CN204805150U (en) | 2015-01-19 | 2015-01-19 | Move sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564793A (en) * | 2015-01-19 | 2015-04-29 | 宁波天工机械密封有限公司 | Dynamic sealing device |
-
2015
- 2015-01-19 CN CN201520035804.5U patent/CN204805150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564793A (en) * | 2015-01-19 | 2015-04-29 | 宁波天工机械密封有限公司 | Dynamic sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 65, Mingke Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province, 315191 Patentee after: Ningbo Tiangong Fluid Technology Co.,Ltd. Country or region after: China Address before: 315000 No.18, Gaogao Road, science and Technology Park, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO TIANGONG MACHINERY SEALING CO.,LTD. Country or region before: China |