CN2846904Y - Polyurethane composite hydraulic seal ring - Google Patents
Polyurethane composite hydraulic seal ring Download PDFInfo
- Publication number
- CN2846904Y CN2846904Y CN 200520130547 CN200520130547U CN2846904Y CN 2846904 Y CN2846904 Y CN 2846904Y CN 200520130547 CN200520130547 CN 200520130547 CN 200520130547 U CN200520130547 U CN 200520130547U CN 2846904 Y CN2846904 Y CN 2846904Y
- Authority
- CN
- China
- Prior art keywords
- ring
- outer ring
- polyurethane
- shape
- inner ring
- 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 relates to a polyurethane composite hydraulic sealing ring which is composed of an outer ring, an inner ring and two check rings, wherein the outer ring is in the shape of a circular ring; three ribs protruding out of the surface are arranged in the middle of the exterior surface of the outer ring in the shape of a circular ring. The sealing gap of the sealing ring can be automatically adjusted, and the utility model has reliable sealing property and convenient assembly. The sealing ring is suitable for hydraulic bracket pillars and jacks with pressure less than 60MPa. The polyurethane composite hydraulic sealing ring is composed of an outer ring, an inner ring and a check ring, wherein the cross section of the outer ring is in the shape of a 'Y'-shaped circular ring composed of a trapezoidal segment with a lip and a rectangular segment; the inner surface and the outer surface of the trapezoidal segment are respectively provided with two ribs, a step slot is arranged at the inner surface of the end of the rectangular segment, and a rib is arranged at the inner surface next to the end of the step slot of the rectangular segment; the inner ring in approximate O shape is inlaid in the lip of the outer ring; the annular check ring has a cut, the check ring is put in the step slot after combination. The utility model has the advantages of reliable sealing property and convenient use, and is suitable for the hydraulic bracket pillars and jacks with pressure less than 40MPa.
Description
Technical field
The utility model relates to hydraulic seal circle technical field, belongs to a kind of high pressure composite sealing ring that is specifically designed to hydraulic seal.
Background technique
At present, hydraulic seal circle kind is various in style, is applicable to that the high-pressure seal ring of hydraulic seal can be divided into two big classes, and the first kind is the monomer seal ring that is used for piston, as the drum type seal ring; Second class is the monomer seal ring that is used for piston rod, as flower bud shape seal ring.The two class seal rings that use are made by homogenous material at present, and manufacture cost is higher; The product difficulty of processing increases when specification is big especially, easily causes quality to descend, and the manufacture cost height if there is not the subdivision otch, causes seal structure complex; So using scope is narrow, working life is short, reliability is not high, assembling is changed inconvenient.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and safety reliability improves, and is easy to maintenance, changes polyurethane complex liquid pressure seal ring easily, and it uses when being applicable to piston two-way sealing and piston rod one-way sealing.
For achieving the above object, the utility model is taked following design proposal:
A kind of polyurethane complex liquid pressure seal ring is characterized in that, it is made of a separable outer ring, an inner ring and two back-up rings, and the outer ring is made by polyurethane material, and inner ring is made by rubber material, and back-up ring is made by polyformaldehyde material; Described outer ring is ring, and three fins that protrude the surface are arranged in outer surface intermediate portion, the outer ring of ring, and two outer ends have the oblique angle; The inner ring outer surface becomes stepped, and there are three fins at the middle part of intermediate section, and there is a fin at the middle part of internal surface, and respectively there is chamfering at two end part; Back-up ring becomes nicked ring-type, and combination back back-up ring is positioned at the end of outer ring and inner ring ladder.
A kind of polyurethane complex liquid pressure seal ring is characterized in that, it is made of a separable outer ring, an inner ring and a back-up ring; The outer ring is made by polyurethane material, and inner ring is made by rubber material, and back-up ring is made by polyformaldehyde material; Outer ring cross-section is the trapezoidal sections of lip ring mouth and rectangular section and forms annulus like " Y " shape, at trapezoidal inner and outer surface position two fins is arranged respectively, at step trough of the end of rectangle internal surface, and is provided with a fin in the nearly step trough of rectangle internal surface end; O shape inner ring is embedded in the lip of outer ring; Baffle ring becomes nicked ring-type, and combination back back-up ring is placed in the step trough.
The utility model seal ring Internal and external cycle is made of different materials, has given full play to the good characteristic of different materials; Back-up ring rides on inner ring or the outer ring, adjusts seal clearance automatically with pressure in seal process; Because of sealing strip particularity, it is all good to have when high and low pressure a sealing effect at motive sealing face, and friction factor is little, the characteristics that the life-span is long; Because divide Internal and external cycle to make the sealing configuration tubeization, safety reliability improves, and is easy to maintenance, it is convenient to change.
Description of drawings
Fig. 1 is the utility model embodiment 1 piston composite sealing ring structural representation
Fig. 2 is the utility model embodiment 2 piston rods composite sealing ring structural representations
Embodiment
Embodiment 1:
Referring to shown in Figure 1: a kind of polyurethane complex liquid pressure seal ring, be used on hydraulic piston, using, it is made of a separable outer ring 1, an inner ring 2 and two back-up rings 3; This kind seal ring outer ring material selection polyurethane adopts injecting method to make; Interior loop material selects rubber, forms with molded vulcanization; Back-up ring material selection polyoxymethylene adopts injecting method to make; In outer surface intermediate portion, the outer ring of ring three fins that protrude the surface are arranged, two outer ends have the oblique angle; The inner ring outer surface becomes stepped, and there are three fins at the middle part of intermediate section, and there is a fin at the middle part of internal surface, and respectively there are 45 ° of chamferings at two end part; Back-up ring becomes nicked ring-type, and combination back back-up ring is positioned at the end of outer ring and inner ring ladder.This polyurethane complex liquid pressure seal ring can be adjusted seal clearance automatically, and sealability is reliable, and is easy to assembly.Be suitable for hydraulic support column, the jack of pressure less than 60MPa.
Embodiment 2:
Referring to shown in Figure 2: a kind of polyurethane complex liquid pressure seal ring, be used on liquid presses piston pole, using, it is made of a separable outer ring 4, an inner ring 5 and a back-up ring 6; This kind seal ring outer ring material selection polyurethane adopts injecting method to make; Interior loop material selects rubber, forms with molded vulcanization; Back-up ring material selection polyoxymethylene adopts injecting method to make; Outer ring cross-section is the trapezoidal sections of lip ring mouth and rectangular section and forms annulus like " Y " shape, at trapezoidal inner and outer surface position two fins is arranged respectively, at step trough of the end of rectangle internal surface, and is provided with a fin in the nearly step trough of rectangle internal surface end; Approximate O shape inner ring is embedded in the lip of outer ring; Baffle ring becomes nicked ring-type, and combination back back-up ring is placed in the step trough.This polyurethane complex liquid pressure seal ring sealability is reliable, easy to use.Be suitable for hydraulic support column, the jack of pressure less than 40Mpa.
Claims (4)
1, a kind of polyurethane complex liquid pressure seal ring, it is characterized in that it is made of a separable outer ring, an inner ring and two back-up rings, described outer ring is ring, in outer surface intermediate portion, the outer ring of ring three fins that protrude the surface are arranged, two outer ends have the oblique angle; The inner ring outer surface becomes stepped, and there are three fins at the middle part of intermediate section, and there is a fin at the middle part of internal surface, and respectively there is chamfering at two end part; Back-up ring becomes nicked ring-type, and combination back back-up ring is positioned at the end of outer ring and inner ring ladder.
2, polyurethane complex liquid pressure seal ring according to claim 1 is characterized in that described outer ring is made by polyurethane material, and inner ring is made by rubber material, and back-up ring is made by polyformaldehyde material.
3, a kind of polyurethane complex liquid pressure seal ring is characterized in that, it is made of a separable outer ring, an inner ring and a back-up ring; Outer ring cross-section is the trapezoidal sections of lip ring mouth and rectangular section and forms annulus like " Y " shape, at trapezoidal inner and outer surface position two fins is arranged respectively, at step trough of the end of rectangle internal surface, and is provided with a fin in the nearly step trough of rectangle internal surface end; The inner ring of approximate O shape is embedded in the lip of outer ring; Baffle ring becomes nicked ring-type, and combination back back-up ring is placed in the step trough.
4, polyurethane complex liquid pressure seal ring according to claim 3 is characterized in that described outer ring is made by polyurethane material, and inner ring is made by rubber material, and back-up ring is made by polyformaldehyde material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130547 CN2846904Y (en) | 2005-11-04 | 2005-11-04 | Polyurethane composite hydraulic seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130547 CN2846904Y (en) | 2005-11-04 | 2005-11-04 | Polyurethane composite hydraulic seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846904Y true CN2846904Y (en) | 2006-12-13 |
Family
ID=37512327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520130547 Expired - Fee Related CN2846904Y (en) | 2005-11-04 | 2005-11-04 | Polyurethane composite hydraulic seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846904Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213316A (en) * | 2011-05-24 | 2011-10-12 | 山西浩业通用设备有限公司 | Combined drum-type seal ring and preparation method thereof |
| CN102367874A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for MBA shaft |
| CN102367873A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for MBD shaft |
| CN102954211A (en) * | 2011-08-26 | 2013-03-06 | 优泰科(苏州)密封技术有限公司 | Piston sealing part |
-
2005
- 2005-11-04 CN CN 200520130547 patent/CN2846904Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213316A (en) * | 2011-05-24 | 2011-10-12 | 山西浩业通用设备有限公司 | Combined drum-type seal ring and preparation method thereof |
| CN102213316B (en) * | 2011-05-24 | 2014-05-28 | 山西浩业通用设备有限公司 | Combined drum-type seal ring and preparation method thereof |
| CN102954211A (en) * | 2011-08-26 | 2013-03-06 | 优泰科(苏州)密封技术有限公司 | Piston sealing part |
| CN102367874A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for MBA shaft |
| CN102367873A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for MBD shaft |
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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: 20061213 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |