CN203308706U - Inner sealing structure for front and rear cover and pump body in gear pump - Google Patents
Inner sealing structure for front and rear cover and pump body in gear pump Download PDFInfo
- Publication number
- CN203308706U CN203308706U CN201320229314XU CN201320229314U CN203308706U CN 203308706 U CN203308706 U CN 203308706U CN 201320229314X U CN201320229314X U CN 201320229314XU CN 201320229314 U CN201320229314 U CN 201320229314U CN 203308706 U CN203308706 U CN 203308706U
- Authority
- CN
- China
- Prior art keywords
- epsilon
- font
- seal ring
- shaped
- shaped sealing
- 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 an inner sealing structure for a front and rear cover and a pump body in a gear pump. The inner sealing structure is characterized by comprising 8-shaped side plates, epsilon-shaped sealing rings and epsilon-shaped sealing ring baffling strips which are matched with one another, wherein the section of each epsilon-shaped sealing ring is in a step-shaped structure and the thickness of the outer edge of each epsilon-shaped sealing ring is lower than that of the inner edge; a limiting lug boss is arranged on the opening part of each epsilon-shaped sealing ring; the middle part of each 8-shaped side plate is provided with a mounting hole for fixing the front and rear cover; each 8-shaped side plate is provided with an epsilon-shaped groove matched with each epsilon-shaped sealing ring; the epsilon-shaped sealing rings are embedded into a sealing groove in the front and rear cover; protruding parts of the epsilon-shaped sealing ring baffling strips are embedded into the epsilon-shaped sealing rings. The inner sealing structure disclosed by the utility model is reasonable in structural design; the 8-shaped side plates, the epsilon-shaped sealing rings and the epsilon-shaped sealing ring baffling strips are embedded and matched so that the stability is good, the sealing performance is good, the inner sealing structure does not need to be replaced frequently, the service life is long and the use requirements are met.
Description
Technical field
The utility model relates to a kind of sealing configuration, relates in particular to the inner seal structure between front and rear covers and the pump housing in a kind of gear pump.
Background technique
Gear pump is to rely on formed swept volume between pumping cylinder and engaging gear to change and the mobile rotary pump of carrying liquid or making it supercharging.By two gears, the pump housing and front and rear covers, form two enclosed spaces, when gear rotates, the volume in the space of the side that is out of gear is large from little change, form vacuum, liquid is sucked, so the sealing configuration of gear pump directly affects the work of gear pump, existing gear pump inner seal structure is simple, after long-term the use, sealing effect is bad, need often change.
The model utility content
The purpose of this utility model is in order to make up the deficiency of prior art, and the inner seal structure between front and rear covers and the pump housing in a kind of gear pump is provided.
The utility model is achieved through the following technical solutions:
Inner seal structure in a kind of gear pump between front and rear covers and the pump housing, it is characterized in that: include the 8-shaped side plate cooperatively interacted, ε font seal ring and ε font seal ring blend stop, the cross section of described ε font seal ring is staircase structural model, its outer peripheral thickness is lower than inward flange, and its oral area is provided with positive stop lug boss, the middle part of described 8-shaped side plate be provided with for the fixing mounting hole of front and rear covers, described 8-shaped side plate is provided with the ε font groove coordinated with ε font seal ring, and ε font seal ring is inlaid in the ε font groove, described ε font seal ring blend stop is inlaid on front and rear covers in seal groove, and its projection is embedded in ε font seal ring.
Described ε font seal ring adopts the Nitrile Rubber material to make, and described ε font seal ring blend stop adopts polytetrafluoroethylmaterial material to make.
Its principle is: the setting-in by 8-shaped side plate, ε font seal ring and ε font seal ring blend stop coordinates, its reasonable in design, during use, ε font seal ring blend stop is inlaid in ε font seal ring, the cross section of described ε font seal ring be staircase structural model with and the positive stop lug boss of oral area, it has the function of a fixing limit while with the ε font groove of 8-shaped side plate, coordinating, good stability, good seal performance, long service life.
The utility model has the advantages that:
The utility model reasonable in design, by the setting-in cooperation of 8-shaped side plate, ε font seal ring and ε font seal ring blend stop, good stability, good seal performance, can not often change, and long service life, met usage requirement.
The accompanying drawing explanation
Fig. 1 is the installation cooperation structure schematic diagram of the utility model in gear pump.
Fig. 2 is 8-shaped lateral plate structure schematic diagram.
Fig. 3 is ε font ring structure schematic diagram.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is ε font seal ring blend stop structural representation.
Embodiment
Referring to accompanying drawing, inner seal structure in a kind of gear pump between front and rear covers and the pump housing, include the 8-shaped side plate 1 cooperatively interacted, ε font seal ring 2 and ε font seal ring blend stop 3, the cross section of ε font seal ring 2 is staircase structural model, its outer peripheral thickness is lower than inward flange, and its oral area is provided with positive stop lug boss 4, the middle part of 8-shaped side plate 1 be provided with for the fixing mounting hole 5 of front and rear covers, 8-shaped side plate 1 is provided with the ε font groove 6 coordinated with ε font seal ring 2, and ε font seal ring 2 is inlaid in ε font groove 6, ε font seal ring blend stop 3 is inlaid on front and rear covers in seal groove, and its projection is embedded in ε font seal ring 2.Described ε font seal ring 2 adopts the Nitrile Rubber material to make, and described ε font seal ring blend stop 3 adopts polytetrafluoroethylmaterial material to make.
Claims (2)
1. the inner seal structure between front and rear covers and the pump housing in a gear pump, it is characterized in that: include the 8-shaped side plate cooperatively interacted, ε font seal ring and ε font seal ring blend stop, the cross section of described ε font seal ring is staircase structural model, its outer peripheral thickness is lower than inward flange, and its oral area is provided with positive stop lug boss, the middle part of described 8-shaped side plate be provided with for the fixing mounting hole of front and rear covers, described 8-shaped side plate is provided with the ε font groove coordinated with ε font seal ring, and ε font seal ring is inlaid in the ε font groove, described ε font seal ring blend stop is inlaid on front and rear covers in seal groove, and its projection is embedded in ε font seal ring.
2. the inner seal structure between front and rear covers and the pump housing in gear pump according to claim 1 is characterized in that: described ε font seal ring adopts the Nitrile Rubber material to make, and described ε font seal ring blend stop adopts polytetrafluoroethylmaterial material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320229314XU CN203308706U (en) | 2013-04-28 | 2013-04-28 | Inner sealing structure for front and rear cover and pump body in gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320229314XU CN203308706U (en) | 2013-04-28 | 2013-04-28 | Inner sealing structure for front and rear cover and pump body in gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308706U true CN203308706U (en) | 2013-11-27 |
Family
ID=49614920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320229314XU Expired - Fee Related CN203308706U (en) | 2013-04-28 | 2013-04-28 | Inner sealing structure for front and rear cover and pump body in gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308706U (en) |
-
2013
- 2013-04-28 CN CN201320229314XU patent/CN203308706U/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: 20131127 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |