CN203594603U - Gear pump spindle head sealing device - Google Patents
Gear pump spindle head sealing device Download PDFInfo
- Publication number
- CN203594603U CN203594603U CN201320767017.0U CN201320767017U CN203594603U CN 203594603 U CN203594603 U CN 203594603U CN 201320767017 U CN201320767017 U CN 201320767017U CN 203594603 U CN203594603 U CN 203594603U
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- CN
- China
- Prior art keywords
- gear
- sealing device
- spindle head
- gear pump
- 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
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Abstract
The utility model discloses a gear pump spindle head sealing device. The gear pump comprises a pump body, a driving gear and a driven gear, wherein the driving gear and the driven gear are mounted in the pump body; a sealing device is mounted at the spindle head of the driving gear. The gear pump spindle head sealing device is characterized by comprising a framework seal, a check ring and a pressure pad, wherein the check ring is positioned between the framework seal and the pressure pad. According to the utility model, based on the traditional framework oil seal, teflon with excellent corrosion resistance and leakproofness is used as the check ring, and a steel disc is added behind the check ring, so that the anti-pressure ability of the gear pump spindle head sealing device reaches 10 MPa, and the sealing effect of the gear pump spindle head sealing device is greatly improved.
Description
Technical field
The utility model relates to a kind of seal arrangement, is specifically related to a kind of gear pump spindle nose seal arrangement.
Background technique
Gear pump is to rely on the swept volume forming between pumping cylinder and engaging gear to change and the mobile rotary pump of carrying liquid or making it supercharging.Form two enclosed spaces by two gears, the pump housing and front and rear covers, in the time that gear rotates, the volume in the space of the side that is out of gear is large from little change, forms vacuum, and liquid is sucked, and the volume in the space of gear engagement side is from diminishing greatly, and liquid is clamp-oned in pipeline and gone.Suction chamber and discharge side are to separate by the line of contact of two gears.The pressure of the exhaust port of gear pump depends on the size that pumps place's resistance completely.Because equipment needs, spindle nose place at gear pump all can arrange seal arrangement, prevent leakage of oil, traditional gear pump is all at spindle nose place mounting framework oil sealing, and based on gear pump performance characteristic, its inner pressure is very large, and the rated pressure of outside framework oil seal is between 0.02～0.05MPa, in the time being greater than this pressure, being easy to cause and turning over lip phenomenon, thereby seal arrangement was lost efficacy.
Summary of the invention
The purpose of this utility model is defect and the deficiency that overcomes existing technology, and a kind of gear pump spindle nose seal arrangement of simple in structure, good sealing effect is provided.
For realizing above object, technical solution of the present utility model is: a kind of gear pump spindle nose seal arrangement, comprise the pump housing, driving gear and driven gear, described driving gear and driven gear are arranged on pump body, the spindle nose place of described driving gear is provided with seal arrangement, it is characterized in that: described seal arrangement comprises reinforced seal, back-up ring and pressure pad, described back-up ring is between reinforced seal and pressure pad.
Described back-up ring is teflon back-up ring, and described pressure pad is steel disc.
The utility model is on the basis of traditional outside framework oil seal, use the teflon of corrosion resistance, good airproof performance as back-up ring, and after back-up ring, install steel disc additional, thereby make the anti-pressure ability of seal arrangement reach 10Mpa, greatly strengthened the sealing effect of seal arrangement, guaranteed the stability of gear pump, and sealing apparatus structure is simple, cost is low, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
In figure: the pump housing 1, driving gear 2, driven gear 3, seal arrangement 4, reinforced seal 5, back-up ring 6, pressure pad 7.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the utility model is described in further detail.
Referring to Fig. 1-Fig. 2, a kind of gear pump spindle nose seal arrangement, comprise the pump housing 1, driving gear 2 and driven gear 3, described driving gear 2 and driven gear 3 are arranged on the pump housing 1 inside, the spindle nose place of described driving gear 2 is provided with seal arrangement 4, and described seal arrangement 4 comprises reinforced seal 5, back-up ring 6 and pressure pad 7, and described back-up ring 6 is between reinforced seal 5 and pressure pad 7, described back-up ring 6 is teflon back-up ring, and described pressure pad 7 is steel disc.
Claims (2)
1. a gear pump spindle nose seal arrangement, comprise the pump housing (1), driving gear (2) and driven gear (3), described driving gear (2) and driven gear (3) are arranged on the pump housing (1) inside, the spindle nose place of described driving gear (2) is provided with seal arrangement (4), it is characterized in that: described seal arrangement (4) comprises reinforced seal (5), back-up ring (6) and pressure pad (7), described back-up ring (6) is positioned between reinforced seal (5) and pressure pad (7).
2. a kind of gear pump spindle nose seal arrangement according to claim 1, is characterized in that: described back-up ring (6) is teflon back-up ring, and described pressure pad (7) is steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767017.0U CN203594603U (en) | 2013-11-29 | 2013-11-29 | Gear pump spindle head sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767017.0U CN203594603U (en) | 2013-11-29 | 2013-11-29 | Gear pump spindle head sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594603U true CN203594603U (en) | 2014-05-14 |
Family
ID=50675496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320767017.0U Expired - Fee Related CN203594603U (en) | 2013-11-29 | 2013-11-29 | Gear pump spindle head sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594603U (en) |
-
2013
- 2013-11-29 CN CN201320767017.0U patent/CN203594603U/en not_active Expired - Fee Related
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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: 20140514 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |