CN201827370U - Plastic-metal composite T-shaped leather bowl sealing member - Google Patents
Plastic-metal composite T-shaped leather bowl sealing member Download PDFInfo
- Publication number
- CN201827370U CN201827370U CN2010205615635U CN201020561563U CN201827370U CN 201827370 U CN201827370 U CN 201827370U CN 2010205615635 U CN2010205615635 U CN 2010205615635U CN 201020561563 U CN201020561563 U CN 201020561563U CN 201827370 U CN201827370 U CN 201827370U
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- plastic
- leather bowl
- sealing member
- sealing
- circular cone
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Abstract
The utility model relates to the technical field of axle sealing with reciprocation movement under deep-cold low-temperature environment, in particular to a plastic-metal composite T-shaped leather bowl sealing member. The plastic-metal composite T-shaped leather bowl sealing member comprises a metal base body and a plastic leather bowl, wherein the lower end of the plastic leather bowl has a cylinder structure; the upper end has a circular cone table structure; the diameter of the lower end of the circular cone table is slightly shorter than that of the cylinder; the centre of the plastic leather bowl is provided with a circular cone through groove to ensure that a metal mandril matched with a sealing member is in inference fit with a lip mouth of the leather bowl of a groove through port at the upper end of the plastic leather bowl; the plastic made of polytrifluorochloroethylene materials is fixedly connected outside of the cylinder at the lower end of the plastic leather bowl so that the whole sealing member is matched with an axial structure component to be sealed. The deformation quantity of the sealing member is small, so that the plastic-metal composite T-shaped leather bowl sealing member is beneficial to the sealing under the deep-cold environment and storage for a long time, and the radial sealing between the pure plastic leather bowl sealing member and the shell is converted into end surface sealing of the metal base body and the shell so as to improve sealing reliability.
Description
Technical field
The utility model relates to deep cooling ultra-low temperature surroundings lower shaft technical field of sealing technology, is specifically related to the compound fourth type of a kind of plastic-metal cup packing part.
Background technique
Axle sealing structure has been developed a variety of both at home and abroad, but valve stem seal is mainly two kinds of stuffing box and bellowss, the valve of in poisonous or flammable explosive gas medium, working, valve rod adopts sylphon seal more, but in pressurized gas, because bellows can not bear too high external pressure, can only adopt packing box seal.According to the literature, the equal more complicated of sealing configuration of the reciprocating type motive sealing of deep cooling of foreign study, as adopt the butterfly spring sheet to add the combined sealing structure of wedge shaped seal and the two-way movable sealing structure of E type spring sheet and L type Sealing etc., this knockdown movable sealing structure generally takes up room bigger, is not suitable for the small and exquisite requirement of carrier rocket rocket body low temperature pneumatic valve structure.
Summary of the invention
The purpose of this utility model is to provide the compound fourth type of a kind of plastic-metal cup packing part to realize having under the low temperature environment sealing of the axle sealing structure of reciprocatory motion.
The technical solution of the utility model is as follows: the compound fourth type of a kind of plastic-metal cup packing part, comprise metallic matrix and plastics leather cup, wherein, plastics leather cup lower end is a cylindrical body, the upper end is a circular cone, and the diameter of circular cone lower end is slightly less than cylindrical diameter, and plastics leather cup center has conical through-hole, with the circular cone formation Sealing lip of upper end; Fixedly connected with metallic matrix with glue by screw thread in the outside of plastics leather cup barrel portion.
The height of described plastics leather cup upper end circular cone is 3mm～5mm.
The cone angle β of described plastics leather cup upper end circular cone is 40 °～45 °.
The cone angle α of described plastics leather cup tapered centre through hole is 17 °～23 °.
Described plastics leather cup adopts the polychlorotrifluoroethylene material.
The flange of described metallic matrix is provided with aluminium backing.
Remarkable result of the present utility model is: the plastics leather cup uses the polychlorotrifluoroethylene material in the compound fourth type of this plastic-metal cup packing part, it has the good strength of materials, linear expansion coeffcient and creep properties, this makes Sealing lip amount of deformation after assembling reduce, help the sealing under the cryogenic environment, and help long term storage; Simultaneously, adopt the plastic-metal composite structure, the radial seal between pure plastics leather cup Sealing and the housing is converted into the end face seal of metallic matrix and housing, improved sealing reliability.
Description of drawings
Fig. 1 is the compound fourth type of an a kind of plastic-metal described in the utility model cup packing part structural representation;
Fig. 2 is cold helium off-load switch push rod and cup packing part assembling schematic representation;
Among the figure: 1, plastics leather cup; 2, metallic matrix; 3, the compound fourth type of plastic-metal cup packing part; 4, push rod; 5, swivel nut; 6, briquetting; 7, aluminium backing; 8, housing.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the compound fourth type of a kind of plastic-metal cup packing part 3 comprises metallic matrix 2 and plastics leather cup 1, wherein plastics leather cup 1 lower end is a cylindrical body, the upper end is a circular cone, and the height of circular cone is 3mm, and cone angle β is 40 °, and the diameter of circular cone lower end is slightly less than cylindrical diameter, plastics leather cup 1 center has conical through-hole, and with the circular cone formation Sealing lip of upper end, and the cone angle α of cone shape hole is 17 °; The outside of plastics leather cup 1 barrel portion is fixedly connected with cylinder cartridge type metallic matrix 2 by screw thread and glue, on the flange of metallic matrix 2 aluminium backing is installed, and metallic matrix 2 is complementary with the housing 8 that is housed to the compound fourth type of plastic-metal cup packing part 3.
As shown in Figure 1, the compound fourth type of a kind of plastic-metal cup packing part 3 comprises metallic matrix 2 and plastics leather cup 1, wherein plastics leather cup 1 lower end is a cylindrical body, the upper end is a circular cone, and the height of circular cone is 5mm, and cone angle β is 43 °, and the diameter of circular cone lower end is slightly less than cylindrical diameter, plastics leather cup 1 center has conical through-hole, and with the circular cone formation Sealing lip of upper end, and the cone angle α of cone shape hole is 20 °; The outside of plastics leather cup 1 barrel portion is fixedly connected with cylinder cartridge type metallic matrix 2 by screw thread and glue, on the flange of metallic matrix 2 aluminium backing is installed, and metallic matrix 2 is complementary with the housing 8 that is housed to the compound fourth type of plastic-metal cup packing part 3.
As shown in Figure 1, the compound fourth type of a kind of plastic-metal cup packing part 3 comprises metallic matrix 2 and plastics leather cup 1, wherein plastics leather cup 1 lower end is a cylindrical body, the upper end is a circular cone, and the height of circular cone is 4mm, and cone angle β is 45 °, and the diameter of circular cone lower end is slightly less than cylindrical diameter, plastics leather cup 1 center has conical through-hole, and with the circular cone formation Sealing lip of upper end, and the cone angle α of cone shape hole is 23 °; The outside of plastics leather cup 1 barrel portion is fixedly connected with cylinder cartridge type metallic matrix 2 by screw thread and glue, on the flange of metallic matrix 2 aluminium backing is installed, and metallic matrix 2 is complementary with the housing 8 that is housed to the compound fourth type of plastic-metal cup packing part 3.
As shown in Figure 2, cold helium off-load switch push rod and cup packing part assembly process are: the flange portion of metallic matrix 2 adds aluminium backing 7 in the compound fourth type of plastic-metal cup packing part 3, and in the housing 8 of packing into, at opposite side pack into briquetting 6 and swivel nut 5, and utilize swivel nut 5 to screw, by briquetting 6 the compound fourth type of plastic-metal cup packing part 3 is pressed in the housing 8, wherein, briquetting 6 center drillings, can make push rod 4 pass the lip position interference fit of briquetting 6 and the compound fourth type of plastic-metal cup packing part 3, the compound fourth type of push rod 4 and plastic-metal cup packing part 3 is sealed mutually, simultaneously, push rod 4 can not be excessive with the lip position interference fit of the compound fourth type of plastic-metal cup packing part 3, guarantee that interference fit does not influence the to-and-fro motion of push rod.Plastics leather cup 1 material uses the polychlorotrifluoroethylene material in the compound fourth type of the plastic-metal cup packing part 3, its strength of materials, linear expansion coeffcient and creep properties etc. all are better than polytetrafluoroethylmaterial material, make leather cup lip position amount of deformation after assembling reduce, help the sealing under the cryogenic environment, and help long term storage.
Claims (6)
1. the compound fourth type of plastic-metal cup packing part, it is characterized in that: the compound fourth type of this plastic-metal cup packing part comprises metallic matrix (2) and plastics leather cup (1), wherein, plastics leather cup (1) lower end is a cylindrical body, the upper end is a circular cone, and the diameter of circular cone lower end is slightly less than cylindrical diameter, and plastics leather cup (1) center has conical through-hole, with the circular cone formation Sealing lip of upper end; Fixedly connected with metallic matrix (2) with glue by screw thread in the outside of plastics leather cup (1) barrel portion.
2. the compound fourth type of a kind of plastic-metal according to claim 1 cup packing part is characterized in that: the height of described plastics leather cup (1) upper end circular cone is 3mm～5mm.
3. the compound fourth type of a kind of plastic-metal according to claim 1 cup packing part is characterized in that: the cone angle β of described plastics leather cup (1) upper end circular cone is 40 °～45 °.
4. the compound fourth type of a kind of plastic-metal according to claim 1 cup packing part, it is characterized in that: the cone angle α of described plastics leather cup (1) tapered centre through hole is 17 °～23 °.
5. according to claim 1 or the compound fourth type of 2 or 3 or 4 described a kind of plastic-metals cup packing part, it is characterized in that: described plastics leather cup (1) adopts the polychlorotrifluoroethylene material.
6. the compound fourth type of a kind of plastic-metal according to claim 1 cup packing part, it is characterized in that: the flange of described metallic matrix (2) is provided with aluminium backing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205615635U CN201827370U (en) | 2010-10-15 | 2010-10-15 | Plastic-metal composite T-shaped leather bowl sealing member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205615635U CN201827370U (en) | 2010-10-15 | 2010-10-15 | Plastic-metal composite T-shaped leather bowl sealing member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827370U true CN201827370U (en) | 2011-05-11 |
Family
ID=43965907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205615635U Expired - Lifetime CN201827370U (en) | 2010-10-15 | 2010-10-15 | Plastic-metal composite T-shaped leather bowl sealing member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358884A (en) * | 2013-06-18 | 2015-02-18 | 费希尔控制国际公司 | Seal assemblies for use with fluid valves |
| CN117366270A (en) * | 2023-12-05 | 2024-01-09 | 山东威玛装备科技股份有限公司 | Valve seal assembly for low-temperature working condition |
-
2010
- 2010-10-15 CN CN2010205615635U patent/CN201827370U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358884A (en) * | 2013-06-18 | 2015-02-18 | 费希尔控制国际公司 | Seal assemblies for use with fluid valves |
| CN117366270A (en) * | 2023-12-05 | 2024-01-09 | 山东威玛装备科技股份有限公司 | Valve seal assembly for low-temperature working condition |
| CN117366270B (en) * | 2023-12-05 | 2024-03-08 | 山东威玛装备科技股份有限公司 | Valve seal assembly for low-temperature working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |