CN102913476A - Bidirectional sealing device of centrifugal pump - Google Patents
Bidirectional sealing device of centrifugal pump Download PDFInfo
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- CN102913476A CN102913476A CN2012104499823A CN201210449982A CN102913476A CN 102913476 A CN102913476 A CN 102913476A CN 2012104499823 A CN2012104499823 A CN 2012104499823A CN 201210449982 A CN201210449982 A CN 201210449982A CN 102913476 A CN102913476 A CN 102913476A
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- sealing
- centrifugal pump
- sealing device
- shell
- cup
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Abstract
The invention relates to a bidirectional sealing device of a centrifugal pump. The bidirectional sealing device comprises a casing, a pressing block, sealing leather cups, a shaft sleeve and a friction piece. The bidirectional sealing device is characterized in that the inner sealing leather cup and the outer sealing leather cup are arranged at two ends of the shaft sleeve, steps are arranged in an inner cavity of the casing and are used for placing the outer sealing leather cup and the friction piece, the inner sealing leather cup and the pressing block are placed on the friction piece, and the friction piece is fixed on the casing through a bolt. According to the bidirectional sealing device, bidirectional sealing is adopted, so that the limit that the working actual effective suction stroke of the centrifugal pump is 8 meters is broken, and the bidirectional sealing device has the advantages of being good in tightness, high in efficiency, energy-saving, durable and the like.
Description
Technical field
The invention belongs to centrifugal pump, especially a kind of bilateral sealing device of centrifugal pump.
Background technique
Existing centrifugal pump uses the stuffing sealing, and its sealing is poor, and leak easily, leak gas, inefficiency, its reality of work validity limit is inhaled journey and is only had 8 meters, meets or exceeds 8 meters and inhales journey, will produce cavitation erosion, can't work.
Summary of the invention
The object of the present invention is to provide and a kind ofly adopt two way sealed, good airproof performance, reach the bilateral sealing device of efficient, energy-conservation centrifugal pump.
The technological scheme that the present invention solves is such, a kind of bilateral sealing device of centrifugal pump, comprise shell, briquetting, sealing cup, axle sleeve, wearing piece, it is characterized in that, described axle sleeve two ends are provided with interior sealing cup and external sealed leather cup, described shell inner cavity is provided with step and places external sealed leather cup and wearing piece, sealing cup and briquetting in placing above the described wearing piece, and be fixed by bolts on the shell.Described wearing piece cylindrical middle part is provided with the sealing of O type circle.Described shell bottom axis hole is provided with oil sealing, and outer casing bottom is arranged with water inlet 3 water inlet sealings, and there is outer O type circle sealing shell and pump housing joint.
Described wearing piece compresses with jump ring.
The advantages such as the present invention adopts two way sealed, thereby breaks through the limit of 8 meters of centrifugal pump reality of work effective absorption distances, has good airproof performance, and efficient is high, and is energy-conservation, durable.
Description of drawings:
Fig. 1 is overall structure plan view of the present invention.
Fig. 2 is overall structure plan view of the present invention.
Fig. 3 is overall structure worm's eye view of the present invention.
Fig. 4 is A-A sectional view among the figure of the present invention.
Fig. 5 is embodiments of the invention 2 structure plan views.
In Fig. 1～Fig. 5, shell (1), interior sealing cup (2), water inlet (3), bolt (4), briquetting (5), wearing piece (6), axle sleeve (7), oil sealing (8), O type circle (9), outer O type circle (10), external sealed leather cup (11), jump ring (12).
Embodiment:
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment 1: referring to figs. 1 through shown in Figure 4, a kind of bilateral sealing device of centrifugal pump, comprise shell, briquetting, sealing cup, axle sleeve, wearing piece, wherein, described axle sleeve 7 two ends are provided with interior sealing cup 2 and external sealed leather cup 11, described shell 1 inner chamber is provided with step and places external sealed leather cup 11 and wearing piece 6, places interior sealing cup 2 and briquetting 5 above the described wearing piece 6, and is fixed on the shell 1 with bolt 4.
Described wearing piece 6 cylindricals middle part is provided with 9 sealings of O type circle.Described shell 1 bottom axis hole is provided with oil sealing 8, and shell 1 bottom is arranged with water inlet 3 water inlet sealings, and shell 1 has outer O type circle 10 sealings with pump housing joint.
Embodiment 2: with reference to shown in Figure 5, overall structure is the same with embodiment 1, and different is that described wearing piece 6 usefulness jump rings 12 compress.
Working principle: the interior sealing cup 2 that the centrifugal pump rotating shaft drives axle sleeve 7 two ends rotates with external sealed leather cup 11, when water pump was malleation, interior sealing cup 2 and 11 interactions of external sealed leather cup reached and prevent cavitation erosion, improve suction, thereby break through the limit of 8 meters of centrifugal pump reality of work effective absorption distances.
Claims (4)
1. the bilateral sealing device of a centrifugal pump, comprise shell, briquetting, sealing cup, axle sleeve, wearing piece, it is characterized in that, described axle sleeve (7) two ends are provided with interior sealing cup (2) and external sealed leather cup (11), described shell (1) inner chamber is provided with step and places external sealed leather cup (11) and wearing piece (6), place interior sealing cup (2) and briquetting (5) above the described wearing piece (6), and be fixed on the shell (1) with bolt (4).
2. the bilateral sealing device of centrifugal pump as claimed in claim 1 is characterized in that, described wearing piece (6) cylindrical middle part is provided with O type circle (9) sealing.
3. the bilateral sealing device of centrifugal pump as claimed in claim 1, it is characterized in that, described shell (1) bottom axis hole is provided with oil sealing (8), and shell (1) bottom is arranged with water inlet (3) water inlet sealing, and shell (1) has outer O type circle (10) sealing with pump housing joint.
4. the bilateral sealing device of centrifugal pump as claimed in claim 1 is characterized in that, described wearing piece (6) compresses with jump ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104499823A CN102913476A (en) | 2012-11-12 | 2012-11-12 | Bidirectional sealing device of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104499823A CN102913476A (en) | 2012-11-12 | 2012-11-12 | Bidirectional sealing device of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102913476A true CN102913476A (en) | 2013-02-06 |
Family
ID=47611988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104499823A Pending CN102913476A (en) | 2012-11-12 | 2012-11-12 | Bidirectional sealing device of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913476A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4108569A (en) * | 1975-05-28 | 1978-08-22 | Weir Pumps Limited | Lubricated mechanical seals for pumps |
| US20020125777A1 (en) * | 2001-03-09 | 2002-09-12 | Larry James Parmeter | Vibration damping system for ESP motor |
| CN2575341Y (en) * | 2002-09-05 | 2003-09-24 | 沈阳市工业泵厂(有限公司) | Centrifugal fan |
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN201068983Y (en) * | 2007-08-01 | 2008-06-04 | 合肥通用机械研究院 | Contact type dry running mechanical sealing |
| CN202900752U (en) * | 2012-11-10 | 2013-04-24 | 黄显志 | Bidirectional sealing device for centrifugal pumps |
-
2012
- 2012-11-12 CN CN2012104499823A patent/CN102913476A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4108569A (en) * | 1975-05-28 | 1978-08-22 | Weir Pumps Limited | Lubricated mechanical seals for pumps |
| US20020125777A1 (en) * | 2001-03-09 | 2002-09-12 | Larry James Parmeter | Vibration damping system for ESP motor |
| CN2575341Y (en) * | 2002-09-05 | 2003-09-24 | 沈阳市工业泵厂(有限公司) | Centrifugal fan |
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN201068983Y (en) * | 2007-08-01 | 2008-06-04 | 合肥通用机械研究院 | Contact type dry running mechanical sealing |
| CN202900752U (en) * | 2012-11-10 | 2013-04-24 | 黄显志 | Bidirectional sealing device for centrifugal pumps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |