CN203476785U - Sealing ring with improved structure - Google Patents
Sealing ring with improved structure Download PDFInfo
- Publication number
- CN203476785U CN203476785U CN201320295492.2U CN201320295492U CN203476785U CN 203476785 U CN203476785 U CN 203476785U CN 201320295492 U CN201320295492 U CN 201320295492U CN 203476785 U CN203476785 U CN 203476785U
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- CN
- China
- Prior art keywords
- seal ring
- sealing ring
- thrust ball
- body wall
- 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.)
- Expired - Lifetime
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- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a sealing ring with an improved structure. The sealing ring comprises a sealing ring body, and thrust balls, a plurality of blind holes are uniformly arranged in end faces of a fiction pair of the sealing ring, the thrust balls are placed in the holes, realize rolling friction, and enable original friction surface contact to be changed into point and line contact, thereby greatly reducing frictional resistance, reducing heat generated by friction, and prolonging the life of the sealing ring. According to the sealing ring, gaps exist between the thrust balls and blind hole walls, when an impeller rotates, backflow liquid from an exit of the impeller flows into the gaps and obtains centrifugal force, and is tossed out along the gaps, thereby effectively preventing ''internal leakage'' of the magnetic pump, and improving the work efficiency of the magnetic pump.
Description
Technical field
The utility model relates to a kind of seal ring, and the seal ring of a kind of low-frictional force characteristic and low leakage characteristics particularly belongs to the shaft sealing field of fluid machinery.
Background technique
The suction port that the highly pressurised liquid flowing out from impeller is got back to again impeller by impeller and the gap between fixed pump shell of rotation, is called internal leakage.In order to reduce internal leakage, protection pump case is equipped with dismountable seal ring on the housing corresponding with impeller eye place.After seal wears, axial clearance is increased, the lifting rate of pump reduces, pump work Efficiency Decreasing, and when gap surpasses certain value, magnetic drive pump is without working efficiency.
Seal ring in the course of the work, except bearing the factors such as working temperature, pressure, corrosion, also need to bear the temperature producing because of friction due to seal ring friction pair end face simultaneously, thereby aggravated the wearing and tearing of seal ring friction pair end face, and then affect sealing effect and the working life of seal ring.Increase the width of the friction pair end face of seal ring, can increase the intensity of friction pair end face, mitigate wear, but can increase face pressure, increase surface friction drag and frictional heat simultaneously; Reduce the width of the degree of friction end face of seal ring, can reduce surface friction drag and reduce frictional heat, but can reduce the intensity of seal ring friction pair, unstable wear, affects sealing effect and the working life of seal ring.
Summary of the invention
The problem that is difficult to overcome in order to solve above-mentioned prior art, the utility model provides a kind of seal ring of architecture advances, and sealing ring has low-frictional force characteristic and low leakage characteristics.
The utility model in order to solve the problems of the technologies described above adopted technological scheme is: a kind of seal ring of architecture advances, comprise seal ring 1, seal ring 2, thrust ball 7, described seal ring 1 is placed in outer snail body wall chase 3 and interior snail body wall chase 4, one of feature of the present invention is: described seal ring 1 coordinates installation with spring assembly, and described spring assembly is arranged on outer snail body wall chase 3 and interior snail body wall chase 4 rear portions.
As further improvement of the utility model, described seal ring 2 is placed in impeller collar extension groove 5 and impeller internal orifice groove 6, described seal ring 2 evenly has a plurality of blind holes in friction pair end face 8, places thrust ball 7 in described blind hole, and thrust ball 7 diameters are consistent with blind hole depth.
As further improvement of the utility model, described thrust ball 7 is gas Pressure Sintered Silicon Nitride thrust ball.
As further improvement of the utility model, described seal ring 1 the selection of material is composite high-molecular material, and described seal ring 2 the selection of materials are a kind of in silicon carbide, silicon nitride and composite high-molecular material.
The beneficial effects of the utility model are: used the seal ring of thrust ball 7, reduced surface friction drag, reduced friction producing heat, extended the working life of seal ring.There is gap with blind pore wall in thrust ball 7, when impeller 9 rotates, from impeller 9 outlet withdrawing fluids, flows into gap and obtain centrifugal force, along gap, is thrown out of, and effectively prevents magnetic drive pump " internal leakage ".Because surface friction drag reduces, " internal leakage " reduces, and improved the working efficiency of magnetic drive pump.
Accompanying drawing explanation
Fig. 1 is position view of the present utility model
Fig. 2 is seal ring 2 structural representations
Embodiment
Embodiment: a kind of seal ring of architecture advances, comprise seal ring 1, seal ring 2, thrust ball 7, described seal ring 1 is placed in outer snail body wall chase 3 and interior snail body wall chase 4, and described seal ring 1 coordinates installation with spring assembly, and described spring assembly is arranged on outer snail body wall chase 3 and interior snail body wall chase 4 rear portions, the elastic reaction of described spring assembly makes seal ring 1 and seal ring 2 close contacts, guarantees good sealability.
Described seal ring 2 is placed in impeller collar extension groove 5 and impeller internal orifice groove 6, described seal ring 2 evenly has a plurality of blind holes in friction pair end face 8, in described blind hole, place thrust ball 7, thrust ball 7 diameters are consistent with blind hole depth, by thrust ball 7, realize the rolling friction between seal ring 1,2 friction pair end face, by original face contact, change Points And lines into and contact, greatly reduced surface friction drag, reduce friction producing heat, extended the working life of seal ring.There is gap with blind pore wall in thrust ball 7, when impeller 9 rotates, from impeller 9 outlet withdrawing fluids, flows into gap and obtain centrifugal force, along gap, is thrown out of, and effectively prevents magnetic drive pump " internal leakage ", improves the working efficiency of magnetic drive pump.
Described thrust ball 7 is gas Pressure Sintered Silicon Nitride thrust ball, thrust ball 7 corrosion resistants of this kind of materials for support, wear-resisting property are good, the more important thing is that its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, guarantee that thrust ball 7 can be used for a long time.
Described seal ring 1 the selection of material is composite high-molecular material, and described seal ring 2 the selection of materials are a kind of in silicon carbide, silicon nitride and composite high-molecular material.The material wear-resistant of selecting, corrosion resistant, heatproof, comprehensive mechanical performance are good.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. the seal ring of an architecture advances, comprise seal ring (1), seal ring (2), thrust ball (7), it is characterized in that: described seal ring (1) is placed in outer snail body wall chase (3) and interior snail body wall chase (4), described seal ring (2) is placed in impeller collar extension groove (5) and impeller internal orifice groove (6), described seal ring (1) coordinates installation with spring assembly, described spring assembly is arranged on outer snail body wall chase (3) and interior snail body wall chase (4) rear portion.
2. seal ring according to claim 1, is characterized in that: described seal ring (2) evenly has a plurality of blind holes in friction pair end face (8), and in described blind hole, place thrust ball (7), thrust ball (7) diameter is consistent with blind hole depth.
3. seal ring according to claim 1, is characterized in that: described thrust ball (7) is gas Pressure Sintered Silicon Nitride thrust ball.
4. seal ring according to claim 1, is characterized in that: described seal ring (1) the selection of material is composite high-molecular material, and described seal ring (2) the selection of material is a kind of in silicon carbide, silicon nitride and composite high-molecular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320295492.2U CN203476785U (en) | 2013-05-28 | 2013-05-28 | Sealing ring with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320295492.2U CN203476785U (en) | 2013-05-28 | 2013-05-28 | Sealing ring with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476785U true CN203476785U (en) | 2014-03-12 |
Family
ID=50225123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320295492.2U Expired - Lifetime CN203476785U (en) | 2013-05-28 | 2013-05-28 | Sealing ring with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179719A (en) * | 2013-05-28 | 2014-12-03 | 高涵文 | Structure-improved sealing ring |
| CN109072935A (en) * | 2016-05-04 | 2018-12-21 | Ksb 股份公司 | Centrifugal pump with the device for being sealed |
-
2013
- 2013-05-28 CN CN201320295492.2U patent/CN203476785U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179719A (en) * | 2013-05-28 | 2014-12-03 | 高涵文 | Structure-improved sealing ring |
| CN109072935A (en) * | 2016-05-04 | 2018-12-21 | Ksb 股份公司 | Centrifugal pump with the device for being sealed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |