CN2677703Y - Packless micro-contact shaft seal structure - Google Patents
Packless micro-contact shaft seal structure Download PDFInfo
- Publication number
- CN2677703Y CN2677703Y CNU2004200385364U CN200420038536U CN2677703Y CN 2677703 Y CN2677703 Y CN 2677703Y CN U2004200385364 U CNU2004200385364 U CN U2004200385364U CN 200420038536 U CN200420038536 U CN 200420038536U CN 2677703 Y CN2677703 Y CN 2677703Y
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- CN
- China
- Prior art keywords
- seal structure
- shaft seal
- ring
- packless
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model relates to a packless micro-contact shaft seal structure, belonging to the movable sealed structure of a pump class or other fluid machinery. The packless micro-contact shaft seal structure is characterized in that the outer sleeve of the packless micro-contact shaft seal structure is sheathed outside a shaft sleeve and shares the same center with the shaft sleeve, and multilevel sealed components are installed inside an annular hollow cavity formed by the outer sleeve and the shaft sleeve. The inner end of the outer sleeve is provided with a press cap. Press rings are installed between the press cap and a primary level sealed component, and are mutually axially tightly pressed. The radial blocking rings of the multilevel sealed components are installed in the annular grooves of the outer rings of abnormity sealed rings. The radial blocking rings are installed between two adjacent abnormity sealed rings. Bearing rings are installed on the inner wall positions of the abnormity sealed rings. The packless micro-contact shaft seal structure has the main advantages of simple structure, convenient installation and disassembly, good sealed performance, low friction power consumption, stable running, reliability, and longer service life; the application pressure of the packless micro-contact shaft seal structure can achieve more than 1mpa. The packless micro-contact shaft seal structure can be widely used for ash pumps, pulp pumps, material pumps, and various pumps whose working pressure is higher, and the packless micro-contact shaft seal structure also can be used for the revolving type fluid machinery of various media and mixing equipment.
Description
(1) technical field
The utility model relates to the movable sealing structure of pump class or other fluid machinery, and band elastic packing lip expands or is pressed on the sealing surface by hydrodynamic pressure, particularly is the little engagement shaft seal structure of a kind of no filler.
(2) background technique
At present, the motive sealing field packing seal of pump or other fluid machinery and mechanical seal and deposit.Especially contain solid particle and inflammable and explosive, corrosivity, special industrial and mineral medium that contaminativity is strong, mechanical seal can't substitute packing seal, has plenty of the two and share.Patent documentation by retrieval, a kind of multistage gland seal device (patent No. 99216731.0), the multi-stage sealed ring that adopts rubber to make, be contained in filler contain in to shaft seal.Its advantage is to simplify than general packing seal structure, and is easy for installation, and the mechanical friction loss reduces, and can prevent that outer foreign matter of pump and air from entering in the axle envelope.Its shortcoming is because of different operating mode leak pressures does not wait, and its seal ring is different with the degree that packs tightly of pump shaft, when pressure surpasses under 1MPa or the more abominable ambient condition inapplicable.
(3) summary of the invention
Shortcoming and defect part in view of above-mentioned prior art existence, the purpose of this utility model provides the little engagement shaft seal structure of a kind of distinguished no filler, its working pressure is further improved, can be used for various mal-condition media and contain solid particle medium, application area is wider.
Above-mentioned purpose is realized by following technical proposals:
This shaft seal structure comprises overcoat, pressure cap, pressure ring, axle sleeve and multi-stage sealed assembly.It is characterized in that outer be sleeved on outside the axle sleeve and concentric, multi-stage sealed assembly is installed in the toroidal cavity of the two formation with axle sleeve.Pressure cap is installed in the inner end of overcoat, and pressure ring is installed between pressure cap and the chopped-off head black box, and mutual axial compression.Black box by special-shaped seal ring, radially baffle ring, axially baffle ring and bearing ring are formed.Radially baffle ring is contained in the circular groove of special-shaped seal ring cylindrical, and axially baffle ring is contained between adjacent two special-shaped seal rings, and bearing ring is contained in the interior place of wall of special-shaped seal ring.
The inner end of the overcoat in the above-mentioned shaft seal structure is the flange plate shape, and the internal thread that matches with pressure cap is arranged, and the tapped hole that usefulness is installed with pump case is arranged.The cylindrical of overcoat is adorned two " O " RunddichtringOs.
Special-shaped seal ring in the black box of above-mentioned shaft seal structure adopts the macromolecular material manufacturing, and its inner end is the plane, and there is the sealing lip that bends towards sleeve outer surface its outer end, and its cylindrical has circular groove.
Bearing ring in the black box of above-mentioned shaft seal structure is a round tube shape, and its inner end is a disc-shape, and its longitudinal profile is " L " shape.
According to the shaft seal structure that above technological scheme is made, simple in structure, mounting or dismounting are convenient, good seal performance, and friction power loss is low, and suitable pressure can reach more than the 1MPa.Can be used for the higher all kinds of pumps of ash pump, slag stock pump, product pump and working pressure that former mechanical seal can not set foot in, also can be used for the rotary fluid machinery and the mixing plant of other all kinds of media.Operate steadily, safe and reliable, working life is longer.
(4) description of drawings
Accompanying drawing is that overall structure of the present utility model is partly cutd open schematic representation.
Among the figure, the 1st, pressure cap, the 2nd, pressure ring, the 3rd, overcoat, the 4th, special-shaped seal ring, the 5th, " O " shape seal ring, the 6th, axial baffle ring, the 7th, baffle ring radially, the 8th, bearing ring, the 9th, axle sleeve, the 10th, pump shaft.
(5) embodiment
Embodiment of accompanying drawings:
This shaft seal structure comprises overcoat 3, pressure cap 1, pressure ring 2, axle sleeve 9 and multi-stage sealed assembly (present embodiment is three grades, also can increase or reduce, according to decision sealing progression such as pressure medium, media particle, medium characters).Overcoat 3 is contained in outside the axle sleeve 9 and is concentric with axle sleeve 9, and multi-stage sealed assembly is installed in the toroidal cavity of the two formation.Pressure cap 1 is installed in the inner end of overcoat 3.Pressure ring 2 is installed between pressure cap 1 and the chopped-off head black box, and mutual axial compression.Black box by special-shaped seal ring 4, radially baffle ring 7, axially baffle ring 6 and bearing ring 8 are formed.Radially baffle ring 7 is contained in the circular groove of special-shaped seal ring 4 cylindricals, and axially baffle ring 6 is contained between adjacent two special-shaped seal rings 4, and bearing ring 8 is contained in the inwall place of special-shaped seal ring 4.
Shown in accompanying drawing, the inner end of overcoat 3 is the flange plate shape, and the internal thread that matches with pressure cap 1 is arranged, and the tapped hole that usefulness is installed with pump case is arranged.Adorn two " O " shape seal rings 5 on the cylindrical of overcoat 3.Special-shaped seal ring 4 adopts the macromolecular material manufacturing, and its inner end is the plane, and there is the sealing lip that bends towards axle sleeve 9 outer surfaces its outer end, and its cylindrical has circular groove.Bearing ring 8 is a round tube shape, and its inner end is a disc-shape, and its longitudinal profile is " L " shape.
The working principle of this shaft seal structure is: under static state, the lip of special-shaped seal ring 4 slightly contacts with axle sleeve 9, realizes the static seal function.During dynamic duty, medium is let out from inside to outside, and the lip generation axial pressure to seal ring 4 moves to right its lip and closely contacts with axle sleeve 9, realizes the motive sealing function.When pressure medium higher (more than 1MPa), bearing ring 8 is subjected to the outside slight expansion of elevated pressures effect, promotes also that seal ring 4 is outwards slight to be moved, thereby prevents more hard-pressed bale solid axle cover 9 and surface friction drag increases of its sealing lip, and heating is serious.The distinctive feature of Here it is the little engagement shaft seal structure of no filler.So working pressure is higher, friction power loss is lower, and working life is longer.Radially the effect of baffle ring 7 and axial baffle ring 6 is to prevent that seal ring 4 is loosening.
Claims (4)
1. little engagement shaft seal structure of no filler, comprise overcoat (3), pressure cap (1), pressure ring (2), axle sleeve (9) and multi-stage sealed assembly, it is characterized in that overcoat (3) is contained in outside the axle sleeve (9) and concentric with axle sleeve (9), multi-stage sealed assembly is installed in the toroidal cavity of the two formation, pressure cap (1) is installed in the inner end of overcoat (3), pressure ring (2) is installed between pressure cap (1) and the chopped-off head black box, and mutual axial compression, black box is by special-shaped seal ring (4), baffle ring (7) radially, axially baffle ring (6) and bearing ring (8) are formed, radially baffle ring (7) is contained in the circular groove of special-shaped seal ring (4) cylindrical, axially baffle ring (6) is contained between adjacent two special-shaped seal rings (4), and bearing ring (8) is contained in the inwall place of special-shaped seal ring (4).
2. the little engagement shaft seal structure of no filler according to claim 1, the inner end that it is characterized in that overcoat (3) is the flange plate shape, the internal thread that matches with pressure cap (1) is arranged, the screw that usefulness is installed with pump case is arranged, adorn two " O " shape seal rings (5) on the cylindrical of overcoat (3).
3. the little engagement shaft seal structure of no filler according to claim 1 is characterized in that special-shaped seal ring adopts the macromolecular material manufacturing every (4), and its inner end is the plane, and there is the sealing lip that bends towards axle sleeve (9) outer surface its outer end, and its cylindrical has circular groove.
4. the little engagement shaft seal structure of no filler according to claim 1 is characterized in that bearing ring (8) is a round tube shape, and its inner end is a disc-shape, and its longitudinal profile is " L " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200385364U CN2677703Y (en) | 2004-02-13 | 2004-02-13 | Packless micro-contact shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200385364U CN2677703Y (en) | 2004-02-13 | 2004-02-13 | Packless micro-contact shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677703Y true CN2677703Y (en) | 2005-02-09 |
Family
ID=34583961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200385364U Expired - Fee Related CN2677703Y (en) | 2004-02-13 | 2004-02-13 | Packless micro-contact shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677703Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775651A (en) * | 2012-10-18 | 2014-05-07 | 上海汉钟精机股份有限公司 | Multi-level lip seal leakproof structure for compressor shaft seal |
| CN104696523A (en) * | 2014-12-17 | 2015-06-10 | 浙江金仪盛世生物工程有限公司 | Shaft seal device for disposable technical bag for bioengineering |
| CN104879494A (en) * | 2015-04-22 | 2015-09-02 | 安徽龙行密封件有限公司 | Diesel oil filter seal ring |
-
2004
- 2004-02-13 CN CNU2004200385364U patent/CN2677703Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775651A (en) * | 2012-10-18 | 2014-05-07 | 上海汉钟精机股份有限公司 | Multi-level lip seal leakproof structure for compressor shaft seal |
| CN104696523A (en) * | 2014-12-17 | 2015-06-10 | 浙江金仪盛世生物工程有限公司 | Shaft seal device for disposable technical bag for bioengineering |
| CN104879494A (en) * | 2015-04-22 | 2015-09-02 | 安徽龙行密封件有限公司 | Diesel oil filter seal ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |