CN205064441U - Pneumatic cylinder piston packaging device under high temperature working condition - Google Patents
Pneumatic cylinder piston packaging device under high temperature working condition Download PDFInfo
- Publication number
- CN205064441U CN205064441U CN201520730770.1U CN201520730770U CN205064441U CN 205064441 U CN205064441 U CN 205064441U CN 201520730770 U CN201520730770 U CN 201520730770U CN 205064441 U CN205064441 U CN 205064441U
- Authority
- CN
- China
- Prior art keywords
- piston
- seal ring
- model steel
- sealing washer
- steel disc
- 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
Landscapes
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides a pneumatic cylinder piston packaging device under high temperature working condition mainly includes piston, permanent model steel sheet, sealing washer A, sealing washer B, elastic ring and piston rod, and permanent model steel sheet, elastic ring, sealing washer A and sealing washer B install in proper order in the piston recess. Its characteristics are that the permanent model steel sheet in the piston recess restraines its inflation, and refractory seals are realized to fluorine rubber materials's sealing washer. The utility model discloses a permanent model steel sheet of embedding in the piston recess prevents piston inflation card jar, through sealing washer A and the sealing washer B who installs fluorine rubber materials on the elastic ring side by side, realize the elevated -temperature seal, come heat dissipation in time through the aluminum alloy piston.
Description
Technical field
The utility model relates to the sealing piston of hydraulic cylinder device under a kind of worst hot case, particularly relates to a kind of by being embedded in permanent model steel disc at pistion recess, prevents piston inflating clip cylinder; By installing seal ring A and the seal ring B of fluorine rubber material on elastic ring side by side, realize elevated-temperature seal; Dispelled the heat in time by all-aluminium piston, belong to the technical research field of hydraulic cylinder piston refractory seal.
Background technique
Oil hydraulic cylinder utilizes the straight reciprocating motion of piston to change hydraulic energy into mechanical energy.But under worst hot case, the phenomenon of piston thermal expansion deformation, card cylinder easily appears in section hydraulic cylinder, even occurs piston seal failure and causes internal leakage, thus reduce the usability of oil hydraulic cylinder.
Therefore, under worst hot case, easily there is the problems such as dilatancy, card cylinder and seal failure for existing section hydraulic cylinder piston, should consider from the structure of hydraulic cylinder piston and seal arrangement, design a kind of resistant to elevated temperatures piston sealing device.
Summary of the invention
Easily there is the problems such as dilatancy, card cylinder and seal failure for existing section hydraulic cylinder piston in the utility model, provide the sealing piston of hydraulic cylinder device under a kind of a kind of worst hot case that can effectively solve the problem under worst hot case.
Sealing piston of hydraulic cylinder device under a kind of worst hot case of the present utility model is by the following technical solutions:
Sealing piston of hydraulic cylinder device under a kind of worst hot case, comprise piston, permanent model steel disc, seal ring A, seal ring B, elastic ring and piston rod, piston rod head end is provided with the shaft shoulder and outside thread, and from inside to outside circlip, piston, elastic washer and locking nut being installed successively, permanent model steel disc, elastic ring, seal ring A and seal ring B are arranged in pistion recess successively; Described piston adopts aluminum alloy, and piston outer side surface has 3 grooves; Described permanent model steel disc cross section is " U " shape and embeds in pistion recess; Described elastic ring adopts rubber material, and its cross section is rectangle and is arranged on permanent model steel disc; Described seal ring A and seal ring B adopts fluorine rubber material, and its cross section is rectangle and is arranged on side by side on elastic ring.
Piston is adopted aluminum alloy by the utility model, by the advantage that aluminum alloy thermal conductivity is good, the piston under hot operation can be dispelled the heat in time.
The utility model is embedded in permanent model steel disc at pistion recess, suppresses piston to expand, prevent card cylinder, namely utilize low-expansion permanent model steel disc to pin down the amount of deformation of the large piston of expansion coefficient by this design.As under worst hot case, although the piston of aluminum alloy has good thermal conductivity, piston can be made to dispel the heat in time, but the high temperature continued may make the piston outer lug A of pistion recess both sides, or piston internal projection A, or piston internal projection B, or piston outer lug B differential expansion, cause seizing of piston, reduce the usability of oil hydraulic cylinder, and the permanent model steel disc that groove is embedded in plays bimetallic effect, permanent model steel disc expansion coefficient is low, be only 1/10 of aluminum alloy, when aluminum alloy dilatancy, be out of shape the distortion that very little permanent model steel disc can hinder all-aluminium piston, thus play the expansion of suppression piston, prevent card cylinder phenomenon.
The utility model adopts seal ring A and the seal ring B of fluorine rubber material at piston seal place, the sealing of oil hydraulic cylinder under worst hot case is realized by the seal ring of fluorine rubber material, this is that its serviceability temperature can reach 250 DEG C because the heat-resisting quantity of fluorine rubber is better than silicone rubber; And double-sealing design side by side, the friction between seal ring A and seal ring B can be utilized, the elasticity of seal ring A or seal ring B with the form consumption of frictional heat energy, can be eliminated seal ring A or seal ring B and reduce sealing effect because of resiliently deformable; In addition, the elastic ring of General Purpose Rubber material is installed under seal ring A and seal ring B, plays the distortion being eliminated seal ring A or seal ring B by the resiliently deformable of elastic ring and frictional heat.
The beneficial effects of the utility model are: by being embedded in permanent model steel disc at pistion recess, prevent piston inflating clip cylinder; By installing seal ring A and the seal ring B of fluorine rubber material on elastic ring side by side, realize elevated-temperature seal; Dispelled the heat in time by all-aluminium piston.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the close-up schematic view at the utility model piston seal place.
Wherein: 1, locking nut, 2, cylinder barrel, 3, elastic washer, 4, seal ring A, 5, seal ring B, 6, elastic ring, 7, permanent model steel disc, 8, piston, 9, circlip, 10, piston rod, 11, piston outer lug A, 12, piston internal projection A, 13, piston internal projection B, 14, piston outer lug B.
Embodiment
Embodiment:
As shown in Figure 1, sealing piston of hydraulic cylinder device under a kind of worst hot case of the present utility model, comprise piston 8, permanent model steel disc 7, seal ring A4, seal ring B5, elastic ring 6 and piston rod 10, piston rod 10 head end is provided with the shaft shoulder and outside thread, and circlip 9, piston 8, elastic washer 3 and locking nut 1 are installed from inside to outside successively, permanent model steel disc 7, elastic ring 6, seal ring A4 and seal ring B5 are arranged in piston 8 groove successively.
Piston 8 adopts aluminum alloy, by the advantage that aluminum alloy thermal conductivity is good, the piston 8 under hot operation can be dispelled the heat in time.Piston 8 outer side surface has 3 grooves.
Shown in composition graphs 2, permanent model steel disc 7 cross section is " U " shape and embeds in piston 8 groove.During work, this design can suppress piston 9 to expand, prevent card cylinder, namely utilizes low-expansion permanent model steel disc 7 to pin down the amount of deformation of the large piston of expansion coefficient 8.As under worst hot case, although the piston 8 of aluminum alloy has good thermal conductivity, piston 8 can be made to dispel the heat in time, but the high temperature continued may make the piston outer lug A11 of piston 8 groove both sides, or piston internal projection A12, or piston internal projection B13, or piston outer lug B14 differential expansion, cause piston 8 card cylinder, reduce the usability of oil hydraulic cylinder, and the permanent model steel disc 7 that groove is embedded in plays bimetallic effect, permanent model steel disc 7 expansion coefficient is low, be only 1/10 of aluminum alloy, when aluminum alloy dilatancy, be out of shape the distortion that very little permanent model steel disc 7 can hinder all-aluminium piston 8, thus play suppress piston 8 expand, prevent card cylinder phenomenon.
Elastic ring 6 adopts rubber material, and its cross section is rectangle and is arranged on permanent model steel disc 7; Seal ring A4 and seal ring B5 adopts fluorine rubber material, and its cross section is rectangle and is arranged on side by side on elastic ring 6.Seal ring A4 and the seal ring B5 of fluorine rubber material is adopted in piston 8 sealing place, during work, realize the sealing of oil hydraulic cylinder under worst hot case by the seal ring of fluorine rubber material, this is that its serviceability temperature can reach 250 DEG C because the heat-resisting quantity of fluorine rubber is better than silicone rubber; And double-sealing design side by side, the friction between seal ring A4 and seal ring B5 can be utilized, the elasticity of seal ring A4 or seal ring B5 with the form consumption of frictional heat energy, can be eliminated seal ring A4 or seal ring B5 and reduce sealing effect because of resiliently deformable; In addition, the elastic ring 6 of General Purpose Rubber material is installed under seal ring A4 and seal ring B5, plays the distortion being eliminated seal ring A4 or seal ring B5 by the resiliently deformable of elastic ring 6 and frictional heat.
Claims (1)
1. the sealing piston of hydraulic cylinder device under a worst hot case, comprise piston, permanent model steel disc, seal ring A, seal ring B, elastic ring and piston rod, piston rod head end is provided with the shaft shoulder and outside thread, and from inside to outside circlip, piston, elastic washer and locking nut being installed successively, permanent model steel disc, elastic ring, seal ring A and seal ring B are arranged in pistion recess successively; It is characterized in that: described piston adopts aluminum alloy, and piston outer side surface has 3 grooves; Described permanent model steel disc cross section is " U " shape and embeds in pistion recess; Described elastic ring adopts rubber material, and its cross section is rectangle and is arranged on permanent model steel disc; Described seal ring A and seal ring B adopts fluorine rubber material, and its cross section is rectangle and is arranged on side by side on elastic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730770.1U CN205064441U (en) | 2015-09-21 | 2015-09-21 | Pneumatic cylinder piston packaging device under high temperature working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730770.1U CN205064441U (en) | 2015-09-21 | 2015-09-21 | Pneumatic cylinder piston packaging device under high temperature working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064441U true CN205064441U (en) | 2016-03-02 |
Family
ID=55391004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520730770.1U Expired - Fee Related CN205064441U (en) | 2015-09-21 | 2015-09-21 | Pneumatic cylinder piston packaging device under high temperature working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179378A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Hydraulic cylinder piston sealing device under high temperature situation |
-
2015
- 2015-09-21 CN CN201520730770.1U patent/CN205064441U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179378A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Hydraulic cylinder piston sealing device under high temperature situation |
| CN105179378B (en) * | 2015-09-21 | 2017-06-23 | 济南大学 | A kind of sealing piston of hydraulic cylinder device under worst hot case |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205064441U (en) | Pneumatic cylinder piston packaging device under high temperature working condition | |
| CN201173188Y (en) | Double end-face mechanical sealing structure for high speed screw compressor | |
| CN104343722A (en) | Floating ring seal device | |
| CN204921997U (en) | Novel piston rod seal assembly | |
| CN105179378A (en) | Hydraulic cylinder piston sealing device under high temperature situation | |
| CN205064442U (en) | High temperature resistance pneumatic cylinder hinge joint device | |
| CN206530416U (en) | Motorcycle engine structure | |
| CN105179377B (en) | A kind of sealing piston of hydraulic cylinder device with anti-deformation and storage oil leak ability | |
| CN105201958A (en) | High-temperature-resisting piston connecting device for hydraulic cylinder | |
| CN204985694U (en) | High temperature resistant, cold -resistant just wear resistant pneumatic cylinder composite piston device | |
| CN204852428U (en) | Titanium material ball valve sealed firmly | |
| CN210265337U (en) | Oil seal structure of oil hydraulic cylinder | |
| CN208221236U (en) | One kind is from heat radiating type cylinder system | |
| CN204985693U (en) | Modular pottery piston device | |
| CN208750013U (en) | A kind of high temperature and high pressure gas surface of revolution dynamic sealing device | |
| CN207315625U (en) | Tool for mounting packing for liquid nitrogen pump | |
| CN206816317U (en) | A kind of seal valve stem | |
| CN205298541U (en) | Air film seal structure for cryogenic pump | |
| CN205047848U (en) | Air film seal spring formula structure for cryogenic pump | |
| CN201661696U (en) | Three-eccentric butterfly valve | |
| CN104806465A (en) | Ceramic plunger high-pressure water pump | |
| CN202746746U (en) | Self-compensating high-temperature fixed ball valve rod seal structure | |
| CN108591178A (en) | A kind of hydraulic cylinder self locking apparatus | |
| CN202852027U (en) | Novel high-temperature high-pressure petroleum valve | |
| CN205957214U (en) | Sealing device for central tube of air preheater |
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: 20160302 Termination date: 20180921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |