CN202900752U - Bidirectional sealing device for centrifugal pumps - Google Patents
Bidirectional sealing device for centrifugal pumps Download PDFInfo
- Publication number
- CN202900752U CN202900752U CN 201220592021 CN201220592021U CN202900752U CN 202900752 U CN202900752 U CN 202900752U CN 201220592021 CN201220592021 CN 201220592021 CN 201220592021 U CN201220592021 U CN 201220592021U CN 202900752 U CN202900752 U CN 202900752U
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- CN
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- Prior art keywords
- friction plate
- sealing
- sealing device
- shell
- cup
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- Expired - Fee Related
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Abstract
The utility model relates to a bidirectional sealing device for centrifugal pumps. The bidirectional sealing device comprises a housing, a pressure block, seal leather cups, a shaft sleeve and a friction plate and is characterized in that the inner seal leather cup and the outer seal leather cup are disposed at two ends of the shaft sleeve, an inner cavity of the housing is provided with a step for holding the outer seal leather cup and the friction plate, and the inner seal leather cup and the pressure block are placed on the friction plate and are fixed to the housing through bolts. The bidirectional sealing device enables a centrifugal pump to break the 8-meter limit of effective suction head lift in actual operation, and has the advantages of fine tightness, high efficiency, energy saving, durability and the like.
Description
Technical field
The utility model 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 easily leak, 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 purpose of this utility model is to provide a kind of and adopts two way sealed, good airproof performance, reaches the bilateral sealing device of efficient, energy-conservation centrifugal pump.
The technological scheme that the utility model solves is such, a kind of bilateral sealing device of centrifugal pump, comprise shell, briquetting, sealing cup, axle sleeve, friction plate, 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 friction plate, sealing cup and briquetting in placing above the described friction plate, and be fixed by bolts on the shell.Described friction plate 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 friction plate compresses with jump ring.
The advantages such as the utility model 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 utility model.
Fig. 2 is overall structure plan view of the present utility model.
Fig. 3 is overall structure worm's eye view of the present utility model.
Fig. 4 is A-A sectional view among the figure of the present utility model.
Fig. 5 is embodiment's 2 structure plan views of the present utility model.
In Fig. 1～Fig. 5, shell (1), interior sealing cup (2), water inlet (3), bolt (4), briquetting (5), friction plate (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 utility model 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, friction plate, 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 friction plate 6, places interior sealing cup 2 and briquetting 5 above the described friction plate 6, and is fixed on the shell 1 with bolt 4.
Described friction plate 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 friction plate 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, friction plate, 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 friction plate (6), place interior sealing cup (2) and briquetting (5) above the described friction plate (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 friction plate (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 friction plate (6) compresses with jump ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592021 CN202900752U (en) | 2012-11-10 | 2012-11-10 | Bidirectional sealing device for centrifugal pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592021 CN202900752U (en) | 2012-11-10 | 2012-11-10 | Bidirectional sealing device for centrifugal pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900752U true CN202900752U (en) | 2013-04-24 |
Family
ID=48121429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220592021 Expired - Fee Related CN202900752U (en) | 2012-11-10 | 2012-11-10 | Bidirectional sealing device for centrifugal pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913476A (en) * | 2012-11-12 | 2013-02-06 | 黄显志 | Bidirectional sealing device of centrifugal pump |
-
2012
- 2012-11-10 CN CN 201220592021 patent/CN202900752U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913476A (en) * | 2012-11-12 | 2013-02-06 | 黄显志 | Bidirectional sealing device of centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |