CN2357166Y - Sealing device for water pump - Google Patents
Sealing device for water pump Download PDFInfo
- Publication number
- CN2357166Y CN2357166Y CN 98247341 CN98247341U CN2357166Y CN 2357166 Y CN2357166 Y CN 2357166Y CN 98247341 CN98247341 CN 98247341 CN 98247341 U CN98247341 U CN 98247341U CN 2357166 Y CN2357166 Y CN 2357166Y
- Authority
- CN
- China
- Prior art keywords
- seal
- flanging
- water pump
- drive sleeve
- static seal
- 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
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The utility model discloses a sealing device for a water pump, which is composed of a static seal and a dynamic seal. The static seal is inlaid in a center shaft hole on the bottom of a water pump housing. The static seal and the dynamic seal are respectively sheathed on an impeller shaft in loosening state and interference state. The lower end of the dynamic seal and the upper end surface of the static seal are kept in tight fit all along by a spring. The utility model can guarantee that liquid inside a water pump can not leak outward even when the interface of the static seal and the dynamic seal is worn out, so the sealing effect is good. The utility model can be used for sealing a washing pump of a dishwasher.
Description
The utility model relates to a kind of water pump gland.Specifically, be dishwasher washing pump sealing apparatus.
At present, resemble the water pump of dishwasher washing pump one class, its seal arrangement adopts single static seal mostly.Though single static seal also can play certain seal action, time one is long, wearing and tearing can occur on its seal and the impeller shaft fitting surface, thus make the interior liquid of water pump along impeller shaft to external leakage, sealing effect is bad.
The purpose of this utility model is to provide a kind of water pump gland.The sealing device can be guaranteed the interior liquid that can not of water pump to external leakage, good sealing effect.
Water pump gland of the present utility model comprises static seal, and this static seal is made up of stuffing box gland and seal, and stuffing box gland is embedded in bottom centre's axis hole of water pump cover, and seal then embeds in the stuffing box gland, and the impeller shaft inserting is in seal.Be characterized in that motive sealing is arranged on the static seal, this motive sealing comprises rotating ring and drive sleeve, the lower edge of rotating ring upper edge and drive sleeve joins, and the outside, connecting part is with shell, there is outer flanging the upper edge of drive sleeve, on the outer flanging spring seat is arranged, and the upper and lower edge of this spring seat has outer flanging and interior flanging respectively, be with spring on it, the upper and lower end of this spring offsets with the upper edge flanging lower surface of spring seat and the lower edge flanging upper surface of drive sleeve respectively.
Because the utility model is a compound motive sealing on the basis of static seal, when wearing and tearing appear in the rotating ring of the seal of static seal and motive sealing, rely on the automatic benefit of the rotating ring of motive sealing to taste, make between the seal of itself and static seal and still can keep closely cooperating, can guarantee that still the liquid in the water pump does not leak good sealing effect.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Accompanying drawing is a water pump gland cross-sectional schematic of the present utility model.
As shown in the figure, water pump gland of the present utility model is made up of static seal and motive sealing, and wherein, static seal comprises seal 2 and be enclosed within the stuffing box gland 1 of the external side of sealing that seal and stuffing box gland are all made with plastic materials.During installation, earlier the two is nested together, again its interference is pressed in the axis hole of the pump housing 10 bottoms and gets final product.Be motive sealing on the static seal, this motive sealing comprises rotating ring 3 and drive sleeve 5, and drive sleeve 5 interference are enclosed within on the impeller shaft 9, then leave the gap between the internal surface of rotating ring 3 and impeller shaft.The upper end of rotating ring 3 outwards bends, and is processed with ring-shaped step on it.The lower edge of drive sleeve 5 is outwards bending also, and the lower surface of its flanging is processed with annular boss, and this boss is corresponding with the ring-shaped step on the rotating ring 3 lower end flangings, and the two closely is nested together.At rotating ring 3 and drive sleeve 5 joints outside cover one metal shell 4, the lower end of this shell is processed with interior flanging, and flanging just in time catches flanging outside the upper end of rotating ring 3 in this.The upper end of drive sleeve 5 also is processed with outer flanging, the upper and lower end of spring seat 8 has outer flanging and interior flanging respectively, flanging just in time catches the outer flanging of drive sleeve 5 upper ends in it, be equipped with spring 7 between the outer flanging of flanging and drive sleeve 5 lower ends outside the upper end of spring seat 8, the upper and lower end of this spring respectively with spring seat 8 upper ends outside the outer flanging upper surface of flanging lower surface and drive sleeve 5 lower ends offset.During installation, the upper end of spring seat 8 and impeller lower surface offset.
In addition, also be provided with throw-out collar 6 between the outer flanging upper surface of spring 7 lower ends and drive sleeve 5 lower ends.
During the utility model work, rotating ring 3 and 2 of the seals in the static seal in the motive sealing can produce friction, when the two wearing and tearing occur, can be under the resilient force of spring, make the two interface still keep closely offseting, taste, reach the purpose of permanent sealing thereby form to mend automatically.
Claims (2)
1. water pump gland, comprise static seal, this static seal is made up of stuffing box gland (1) and seal (2), and stuffing box gland (1) is embedded in the central shaft hole of the pump housing (10) bottom, seal (2) then embeds in the stuffing box gland (1), and impeller shaft (9) inserting is in seal (2); It is characterized in that motive sealing is arranged on the static seal, this motive sealing comprises rotating ring (3) and drive sleeve (5), the lower edge of rotating ring (3) upper edge and drive sleeve (5) joins, and the outside, connecting part is with shell (4), there is outer flanging the upper edge of drive sleeve, and spring seat (8) is arranged on the outer flanging, and the upper and lower edge of this spring seat has outer flanging and interior flanging respectively, be with spring (7) on it, the upper and lower end of this spring offsets with the upper edge flanging lower surface of spring seat and the lower edge flanging upper surface of drive sleeve respectively.
2. seal arrangement according to claim 1 is characterized in that between spring (7) lower end and drive sleeve (5) lower edge flanging upper surface throw-out collar (6) being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247341 CN2357166Y (en) | 1998-12-17 | 1998-12-17 | Sealing device for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247341 CN2357166Y (en) | 1998-12-17 | 1998-12-17 | Sealing device for water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2357166Y true CN2357166Y (en) | 2000-01-05 |
Family
ID=33992596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98247341 Expired - Fee Related CN2357166Y (en) | 1998-12-17 | 1998-12-17 | Sealing device for water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2357166Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430006B (en) * | 2008-12-08 | 2010-12-01 | 哈尔滨工程大学 | Sea water pressure balance compensation type rotation axis moving seal |
| CN105108266A (en) * | 2015-07-24 | 2015-12-02 | 北京动力机械研究所 | Compound positioning device for high-temperature alloy brazing |
-
1998
- 1998-12-17 CN CN 98247341 patent/CN2357166Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430006B (en) * | 2008-12-08 | 2010-12-01 | 哈尔滨工程大学 | Sea water pressure balance compensation type rotation axis moving seal |
| CN105108266A (en) * | 2015-07-24 | 2015-12-02 | 北京动力机械研究所 | Compound positioning device for high-temperature alloy brazing |
| CN105108266B (en) * | 2015-07-24 | 2017-04-05 | 北京动力机械研究所 | High temperature alloy soldering compound positioning device |
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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 |