CN105090515A - Integrally mounted mechanical seal device - Google Patents
Integrally mounted mechanical seal device Download PDFInfo
- Publication number
- CN105090515A CN105090515A CN201410189618.7A CN201410189618A CN105090515A CN 105090515 A CN105090515 A CN 105090515A CN 201410189618 A CN201410189618 A CN 201410189618A CN 105090515 A CN105090515 A CN 105090515A
- Authority
- CN
- China
- Prior art keywords
- ring
- seal
- axle sleeve
- big envelope
- rotating ring
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
Abstract
The invention discloses an integrally mounted mechanical seal device. The integrally mounted mechanical seal device comprises a shaft sleeve, wherein a first seal component and a second seal component sleeve the shaft sleeve, the first seal component comprises a first moving ring and a seal sleeve, the seal sleeve sleeves the first moving ring, the second seal component comprises a second moving ring and a mechanical seal sleeve, the mechanical seal sleeve is arranged outside the second moving ring, a first fixed ring and a second fixed ring are respectively arranged at the two ends of the mechanical seal sleeve, the end portion of the first moving ring is fit with the end portion of the first fixed ring, the end portion of the second moving ring is fit with the end portion of the second fixed ring, and a cooling chamber is arranged in the second seal component. During use, an operator only needs to tightly screw screws into the mechanical seal sleeve and equipment and the installation is facilitated; the first seal component is located inside the equipment, the second seal component is located outside the equipment, friction heat in the first seal component is dissipated through materials, friction heat in the second seal component is dissipated through cooling liquid, the heat dissipating effect is better and the service life of the mechanical seal device is prolonged.
Description
Technical field
The invention belongs to the seal arrangement of conveying flowing medium machinery, more specifically relate to a kind of integrated mechanical sealing device.
Background technique
In the dispersing equipment requiring the electronics of explosion-proof, anti-poisonous gas leakage, chemical industry, often need to high hardness as silica, high viscosity as epoxy resin, volatilely carry out decentralized treatment as the corrosivity such as butanone, acetone working medium, now require higher to the sealability of equipment.Mechanical seal device is mainly used in shaft seal, in practical operation, the requirement of installation to operator of mechanical seal device is higher, in addition, mechanical seal device is can produce frictional heat along with when axle rotates, frictional heat is damaged comparatively large to mechanical seal device, affect the working life of mechanical seal device.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of good heat dissipation effect, durable, long service life, the convenient integrated mechanical sealing device installed.
In order to reach above-mentioned technique effect, technological scheme of the present invention is as follows:
A kind of integrated mechanical sealing device, comprise axle sleeve, the first black box and the second black box is arranged with outside axle sleeve, first black box comprises the first rotating ring and big envelope, big envelope is arranged with outside first rotating ring, second black box comprises the second rotating ring and machine big envelope, the organic big envelope of second rotating ring peripheral hardware, the two ends of machine big envelope are respectively equipped with the first stationary ring and the second stationary ring, one end that machine big envelope arranges the second stationary ring is provided with machine shrouding, fit in the end of the first rotating ring and the end of the first stationary ring, fit in the end of the second rotating ring and the end of the second stationary ring, second rotating ring, first stationary ring, machine big envelope, space between machine shrouding and the second stationary ring is cooling chamber, cooling chamber offers cooling liquid inlet and cooling liquid outlet, cooling liquid inlet and cooling liquid outlet are positioned on machine big envelope.
Its beneficial effect is: the first black box is positioned at material cavity, second black box is positioned at outside material cavity, first rotating ring of the first black box and the end laminating of the first stationary ring form the dynamic seal (packing) to material cavity, play the effect of primary seal, prevent material from leakage; Second rotating ring of the second black box and the end laminating of the second stationary ring form the dynamic seal (packing) to cooling chamber, play the effect of auxiliary seal, prevent the leakage of cooling liquid; When the primary seal of the first rotating ring and the first stationary ring lost efficacy, the auxiliary seal of the second rotating ring and the second stationary ring prevented material from leakage, to the effect needing the material of sealing to have double insurance.In use, this mechanical seal device is arranged on the relevant position of equipment, screw only need to be screwed in machine big envelope and equipment and to tighten by operator, easy for installation, lower to the technical requirements of operator, save the stopping production standby time of enterprise, improve manufacturing efficiency.First black box of the present invention is positioned at the material cavity of equipment, the material that frictional heat in first black box is carried by equipment dispels the heat, second black box is positioned at device external, the cooling liquid that frictional heat in second black box is circulated by cooling chamber is dispelled the heat, effective frictional heat source having disperseed the first black box and the second black box, radiating effect is better, extends the working life of mechanical seal device.
In some embodiments, cooling chamber is also provided with thermometer mount inlet, in thermometer mount inlet, thermometer is installed.
Its beneficial effect is: thermometer, for measuring the temperature in cooling chamber, ensures that the frictional heat of the second black box can be dispelled the heat in time.
In some embodiments, first rotating ring comprises the first noumenon, first spring and the first termination, the first draw-in groove is provided with in the first noumenon, one end of first spring is fastened in the first draw-in groove, the other end of the first spring is connected with the first termination, first termination and the first stationary ring are fitted, one end that first termination and the first stationary ring are fitted is kink shape, second rotating ring comprises the second body, second spring and the second termination, the second draw-in groove is provided with in second body, one end of second spring is fastened in the second draw-in groove, the other end of the second spring is connected with the second termination, second termination and the second stationary ring are fitted, one end that second termination and the second stationary ring are fitted is kink shape.
Its beneficial effect is: the effect of primary seal is played in the laminating of the first termination and the first stationary ring, prevents the leakage of material; First termination is the direction that kink shape can change the first acting force of the spring, disperses the active force of the first spring, reduces the first termination and the fricative frictional heat of the first stationary ring, is the mechanical seal of balance type single end face.The laminating of the second rotating ring and the second stationary ring not only can play the effect of sealing to the cooling liquid in cooling chamber, can also play the effect of auxiliary seal, when primary seal lost efficacy, have seal action to material to material; Second termination is the direction that kink shape can change the second acting force of the spring, disperses the active force of the second spring, reduces the second termination and the fricative frictional heat of the second stationary ring, is the mechanical seal of balance type single end face.
In some embodiments, one end of axle sleeve is provided with the first seal ring, and the first seal ring is positioned on the madial wall of axle sleeve, and the other end of axle sleeve is provided with stiffening ring, and stiffening ring is connected by the 3rd Cock screw with axle sleeve.
Its beneficial effect is: in use, is set in by axle sleeve on main shaft, and the first seal ring ensure that the sealability between main shaft and axle sleeve, and prevent material from overflowing from the gap between main shaft and axle sleeve, axle sleeve is fixed on main shaft by stiffening ring.
In some embodiments, first rotating ring is connected by the first Cock screw with between axle sleeve, the second seal ring is provided with between first rotating ring and axle sleeve, be provided with the 3rd seal ring and the 4th seal ring between big envelope and the first rotating ring, the 3rd seal ring and the 4th seal ring are positioned at the two ends of the madial wall of big envelope.
Its beneficial effect is: the first Cock screw ensures the first rotating ring and axle sleeve synchronous axial system, second seal ring ensure that the sealability between the first rotating ring and axle sleeve, prevent material from entering space between the first rotating ring and axle sleeve, big envelope and the first rotating ring seal by the 3rd seal ring and the 4th seal ring at big envelope two ends, prevent material from entering the first rotating ring and damaging the first rotating ring.
In some embodiments, the second rotating ring is connected by the second Cock screw with axle sleeve, is provided with the 5th seal ring between the second rotating ring and axle sleeve.
Its beneficial effect is: the second Cock screw ensures the second rotating ring and axle sleeve synchronous axial system, and the 5th seal ring ensure that the sealability between the second rotating ring and axle sleeve, prevents material from entering space between the second rotating ring and axle sleeve.
In some embodiments, first stationary ring is arranged with plane back-up ring and circlip successively, be provided with the 6th seal ring between first stationary ring and machine big envelope, between the second stationary ring and machine shrouding, be provided with the 7th seal ring, between machine big envelope and machine shrouding, be provided with the 8th seal ring.
Its beneficial effect is: the first stationary ring and the second stationary ring are set on axle sleeve, and machine big envelope is maintained static by the first stationary ring and the second stationary ring, and the first stationary ring is fixed by plane back-up ring and circlip in the axial direction, prevents the first stationary ring vibration in the axial direction; 6th seal ring seals the gap between the first stationary ring and machine big envelope, prevent material from entering cooling chamber, the gap of 7th seal ring seal between the second stationary ring and machine shrouding, the 8th seal ring seals the gap between machine big envelope and machine shrouding, prevent cooling liquid from leaking.
In some embodiments, the first black box is made up of metallic material, and the second black box is made up of corrosion resistant material.
Its beneficial effect is: the first black box is made up of alloy material, and the second black box is made up of corrosion resistant material.In actual use, the first black box is arranged in material, and the hardness and viscosity of material particles is higher, and therefore the first black box will adopt the alloy material of antiwear heat resisting to make.Be injected with cooling liquid in second black box, adopt corrosion resistant material to make, prevent cooling liquid from corroding the second black box.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the specific embodiment of the invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the side cross sectional views of the integrated mechanical sealing device of an embodiment of the present invention;
Fig. 2 is the end view of the integrated mechanical sealing device of an embodiment of the present invention;
Fig. 3 is the structural representation of the integrated mechanical sealing device of an embodiment of the present invention;
Fig. 4 is the first rotating ring of the integrated mechanical sealing device of an embodiment of the present invention and the structural representation of the first stationary ring.
The title of the corresponding part in figure represented by numeral:
1. main shaft, 2. axle sleeve, 3. the first seal ring, 4. the first rotating ring, 41. the first noumenons, 42. first springs, 43. first terminations, 5. the 3rd seal ring, 6. the first Cock screw, 7. the second seal ring, 8. big envelope, 9. the 4th seal ring, 10. the first stationary ring, 11. circlips, 12. plane back-up rings, 13. machine big envelopes, 14. the 9th seal rings, 15. the 6th seal rings, 16. cooling chambers, 17. second Cock screws, 18. the 5th seal rings, 19. second rotating rings, 20. thermometer mount inlets, 21. second stationary rings, 22. the 8th seal rings, 23. the 7th seal rings, 24. stiffening rings, 25. the 3rd Cock screws, 26. machine shroudings, 271. cooling liquid inlet, 272. cooling liquid outlet.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 3, the present invention discloses a kind of integrated mechanical sealing device and comprises the axle sleeve 2 be set in machine spindle 1.Axle sleeve 2 is outer is arranged with the first black box and the second black box successively.First black box comprises outside the first rotating ring 4, first rotating ring 4 and is arranged with big envelope 8.Second black box comprises the organic big envelope 13 of the second rotating ring 19, second rotating ring 19 peripheral hardware.The two ends of machine big envelope 13 are respectively equipped with the first stationary ring 10 and the second stationary ring 21.Fit in the end of the first rotating ring 4 and the end of the first stationary ring 10, fit in the end of the second rotating ring 19 and the end of the second stationary ring 21, the first stationary ring 10 does not contact with the second rotating ring 19.
The madial wall of one end of axle sleeve 2 offers groove, is arranged with the first seal ring 3, first seal ring 3 in groove and ensure that sealability between main shaft 1 and axle sleeve 2, prevent material from entering space between main shaft 1 and axle sleeve 2.The other end of axle sleeve 2 is provided with stiffening ring 24, and stiffening ring 24 can strengthen the position of fixed axle sleeve 2.Stiffening ring 24 is provided with three screws and three through holes, axle sleeve 2 is correspondingly provided with three screws and three through holes, and stiffening ring 24 is fixedly connected with axle sleeve 2 by being screwed into stiffening ring 24 with the screw on axle sleeve 2 by the 3rd Cock screw 25; Stiffening ring 24 and axle sleeve 2 are fixed on main shaft 1 by the through hole on stiffening ring 24 and axle sleeve 2 by tight fixed bolt again, and axle sleeve 2 is fixedly connected with and synchronous axial system with main shaft 1.First rotating ring 4 is connected by the first Cock screw 6 with between axle sleeve 2, and the first Cock screw 6 makes the first rotating ring 4 and axle sleeve 2 synchronous axial system.Be provided with the second seal ring 7, second seal ring 7 between first rotating ring 4 and axle sleeve 2 and seal gap between the first rotating ring 4 and axle sleeve 2, prevent material from entering gap between the first rotating ring 4 and axle sleeve 2.The two ends of big envelope 8 madial wall are respectively equipped with the 3rd seal ring 5 and the 4th seal ring the 9, three seal ring 5 and the 4th seal ring 9 and big envelope 8 and the first rotating ring 4 are sealed, and prevent material from entering the first rotating ring 4 and damaging the first rotating ring 4.Second rotating ring 19 is connected with axle sleeve 2 by the second Cock screw 17, and the second Cock screw 17 makes the second rotating ring 19 and axle sleeve 2 synchronous axial system.Be provided with the 5th seal ring the 18, five seal ring 18 between second rotating ring 19 and axle sleeve 2 to seal the gap between the second rotating ring 19 and axle sleeve 2, prevent cooling liquid from entering into the second rotating ring 19 and damaging the second rotating ring 19.The end of machine big envelope 13 is provided with machine shrouding 26, and the two ends of machine big envelope 13 madial wall are respectively equipped with the first stationary ring 10 and the second stationary ring 21.Projection on machine shrouding 26 is fastened in the space of the second stationary ring 21 and machine big envelope 13 end.Second rotating ring 19, first stationary ring 10, machine big envelope 13, space between machine shrouding 26 and the second stationary ring 21 are cooling chamber 16, cooling chamber 16 offer thermometer mount inlet 20, cooling liquid inlet 271 and cooling liquid outlet 272.Cooling liquid is injected in cooling chamber 16 from cooling liquid inlet, discharges cooling chamber 16 from cooling liquid outlet.The cooling liquid circulated in cooling chamber 16 is for cooling the second black box.In thermometer mount inlet 20, thermometer being installed, for measuring the temperature in cooling chamber 16, ensureing that the frictional heat of the second black box can be dispelled the heat in time.Be provided with the 7th seal ring the 23, seven seal ring 23 between machine shrouding 26 and the second stationary ring 21 and seal gap between the second stationary ring 21 and machine shrouding 26, prevent cooling liquid from leaking.Be provided with the 8th seal ring the 22, eight seal ring 22 between machine big envelope 13 and machine shrouding 26 and seal gap between machine big envelope 13 and machine shrouding 26, prevent the cooling liquid in cooling chamber 16 from leaking.Be provided with the 6th seal ring the 15, six seal ring 15 between first stationary ring 10 and machine big envelope 13 and seal gap between the first stationary ring 10 and machine big envelope 13, prevent material from entering cooling chamber 16.First stationary ring 10 is arranged with successively plane back-up ring 12 and circlip 11, plane back-up ring 12 and elasticity baffle ring are positioned at the inner side of the first stationary ring 10, and plane back-up ring 12 is between elasticity baffle ring and the first stationary ring 10.First stationary ring 10 is fixed by plane back-up ring 12 and circlip 11 in the axial direction, prevents the first stationary ring 10 vibration in the axial direction.Machine big envelope 13 is also provided with the 9th seal ring 14, is installed to by mechanical seal device in the pump housing, the 9th seal ring 14 ensures the sealability between machine shrouding 13 and the pump housing, prevents the leakage of material.
As shown in Figure 4, the first rotating ring 4 comprises the first noumenon 41, first spring 42 and the first termination 43.Be provided with the first draw-in groove in the first noumenon 41, one end of the first spring 42 is fastened in the first draw-in groove, and the other end of the first spring 42 is connected with the first termination 43.Under the effect of the restoring force of the first spring 42, the first termination 43 and the first stationary ring 10 are tightly fitted.One end that first termination 43 and the first stationary ring 10 are fitted is kink shape, the direction of the first spring 42 active force can be changed, disperse the active force of the first spring 42, reducing the first termination 43 and the fricative frictional heat of the first stationary ring 10, is the mechanical seal of balance type single end face.Second rotating ring 19 comprises the second body, the second spring and the second termination, is provided with the second draw-in groove in the second body, and one end of the second spring is fastened in the second draw-in groove, and the other end of the second spring is connected with the second termination.Under the effect of the restoring force of the second spring, the second termination and the second stationary ring 21 are tightly fitted.One end that second termination and the second stationary ring 21 are fitted is kink shape, can change the direction of the second acting force of the spring, disperse the active force of the second spring, reduces the second termination and the fricative frictional heat of the first stationary ring, is the mechanical seal of balance type single end face.Dispersible the vertical of the second spring, reduce the second termination and the fricative frictional heat of the second stationary ring 21.
First black box is made up of alloy material, and the second black box is made up of corrosion resistant material.In actual use, the first black box is arranged in material, and the hardness and viscosity of material particles is higher, and therefore the first black box will adopt the alloy material of antiwear heat resisting to make.Be injected with cooling liquid in second black box, adopt corrosion resistant material to make, prevent cooling liquid from corroding the second black box.In the present embodiment, the first black box adopts tungsten alloy to make, and the second black box adopts silicon carbide to make.
The present invention is integrated mechanical sealing device, in use, this mechanical seal device is arranged on the relevant position of equipment, screw only need to be screwed in machine big envelope and equipment and to tighten by operator, easy for installation, lower to the technical requirements of operator, save the stopping production standby time of enterprise, improve manufacturing efficiency.First black box is positioned at material cavity, and the second black box is positioned at outside material cavity, and the first rotating ring 4 of the first black box and the end laminating of the first stationary ring 10 form the dynamic seal (packing) to material cavity, play the effect of primary seal, prevent material from leakage; Second rotating ring 19 of the second black box and the end laminating of the second stationary ring 21 form the dynamic seal (packing) to cooling chamber 16, play the effect of auxiliary seal, prevent the leakage of cooling liquid; When the primary seal that first moves 4 rings and the first stationary ring 10 lost efficacy, the auxiliary seal of the second rotating ring 19 and the second stationary ring 21 prevented material from leakage, to the effect needing the material of sealing to have double insurance.First black box of the present invention is positioned at the material cavity of equipment, the material that frictional heat in first black box is carried by equipment dispels the heat, second black box is positioned at device external, the cooling liquid that frictional heat in second black box is circulated by cooling chamber 16 is dispelled the heat, effective frictional heat source having disperseed the first black box and the second black box, radiating effect is better, extends the working life of mechanical seal device.
Above-described is only the preferred implementation of integrated mechanical sealing device of the present invention, and for those skilled in the art, under the prerequisite not paying creative work, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. an integrated mechanical sealing device, it is characterized in that, comprise axle sleeve, the first black box and the second black box is arranged with outside described axle sleeve, described first black box comprises the first rotating ring and big envelope, described big envelope is arranged with outside described first rotating ring, described second black box comprises the second rotating ring and machine big envelope, described second rotating ring peripheral hardware has described machine big envelope, the two ends of described machine big envelope are respectively equipped with the first stationary ring and the second stationary ring, one end that described machine big envelope arranges the second stationary ring is provided with machine shrouding, fit in the end of described first rotating ring and the end of described first stationary ring, fit in the end of described second rotating ring and the end of described second stationary ring, described second rotating ring, first stationary ring, machine big envelope, space between machine shrouding and the second stationary ring is cooling chamber, described cooling chamber offers cooling liquid inlet and cooling liquid outlet, described cooling liquid inlet and cooling liquid outlet are positioned on described machine big envelope.
2. integrated mechanical sealing device according to claim 1, is characterized in that, described cooling chamber is also provided with thermometer mount inlet, is provided with thermometer in described thermometer mount inlet.
3. integrated mechanical sealing device according to claim 1, it is characterized in that, described first rotating ring comprises the first noumenon, first spring and the first termination, the first draw-in groove is provided with in described the first noumenon, one end of described first spring is fastened in the first draw-in groove, the other end of described first spring is connected with described first termination, described first termination and described first stationary ring are fitted, one end that described first termination and described first stationary ring are fitted is kink shape, described second rotating ring comprises the second body, second spring and the second termination, the second draw-in groove is provided with in described second body, one end of described second spring is fastened in the second draw-in groove, the other end of described second spring is connected with described second termination, described second termination and described second stationary ring are fitted, one end that described second termination and described second stationary ring are fitted is kink shape.
4. integrated mechanical sealing device according to claim 3, it is characterized in that, one end of described axle sleeve is provided with the first seal ring, described first seal ring is positioned on the madial wall of described axle sleeve, the other end of described axle sleeve is provided with stiffening ring, and described stiffening ring is connected by the 3rd Cock screw with described axle sleeve.
5. integrated mechanical sealing device according to claim 4, it is characterized in that, described first rotating ring is connected by the first Cock screw with between described axle sleeve, the second seal ring is provided with between described first rotating ring and described axle sleeve, be provided with the 3rd seal ring and the 4th seal ring between described big envelope and described first rotating ring, described 3rd seal ring and the 4th seal ring lay respectively at the two ends of described big envelope madial wall.
6. integrated mechanical sealing device according to claim 5, is characterized in that, described second rotating ring is connected by the second Cock screw with described axle sleeve, is provided with the 5th seal ring between described second rotating ring and described axle sleeve.
7. integrated mechanical sealing device according to claim 6, it is characterized in that, described first stationary ring is arranged with plane back-up ring and circlip successively, the 6th seal ring is provided with between described first stationary ring and described machine big envelope, be provided with the 7th seal ring between described second stationary ring and described machine shrouding, between described machine big envelope and described machine shrouding, be provided with the 8th seal ring.
8. integrated mechanical sealing device according to claim 7, is characterized in that, described first black box is made up of alloy material, and described second black box is made up of corrosion resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189618.7A CN105090515A (en) | 2014-05-06 | 2014-05-06 | Integrally mounted mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189618.7A CN105090515A (en) | 2014-05-06 | 2014-05-06 | Integrally mounted mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090515A true CN105090515A (en) | 2015-11-25 |
Family
ID=54571559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189618.7A Pending CN105090515A (en) | 2014-05-06 | 2014-05-06 | Integrally mounted mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090515A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782108A (en) * | 2016-03-24 | 2016-07-20 | 芜湖市中天密封件有限公司 | Chemical pump water tank type case sealing part |
| CN105864434A (en) * | 2016-05-27 | 2016-08-17 | 芜湖市中天密封件有限公司 | Novel mechanical sealing part of magnetic suspension energy-saving air blower |
| CN109923339A (en) * | 2016-09-08 | 2019-06-21 | 日本皮拉工业株式会社 | Mechanical sealing member |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782108A (en) * | 2016-03-24 | 2016-07-20 | 芜湖市中天密封件有限公司 | Chemical pump water tank type case sealing part |
| CN105864434A (en) * | 2016-05-27 | 2016-08-17 | 芜湖市中天密封件有限公司 | Novel mechanical sealing part of magnetic suspension energy-saving air blower |
| CN109923339A (en) * | 2016-09-08 | 2019-06-21 | 日本皮拉工业株式会社 | Mechanical sealing member |
| US10823291B2 (en) | 2016-09-08 | 2020-11-03 | Nippon Pillar Packing Co., Ltd. | Mechanical seal |
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