CN220314389U - Cabin cover packing - Google Patents
Cabin cover packing Download PDFInfo
- Publication number
- CN220314389U CN220314389U CN202321281383.5U CN202321281383U CN220314389U CN 220314389 U CN220314389 U CN 220314389U CN 202321281383 U CN202321281383 U CN 202321281383U CN 220314389 U CN220314389 U CN 220314389U
- Authority
- CN
- China
- Prior art keywords
- layer
- fiber layer
- polytetrafluoroethylene film
- packing
- polytetrafluoroethylene
- 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.)
- Active
Links
- 238000012856 packing Methods 0.000 title claims abstract description 30
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 43
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 30
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a cabin cover packing, which is characterized in that an inner polytetrafluoroethylene film is wrapped on the outer layer of nitrile rubber, a polypropylene fiber layer is woven on the outer layer of the inner polytetrafluoroethylene film, an outer polytetrafluoroethylene film is further wound on the surface of the polypropylene fiber layer, and finally, a polytetrafluoroethylene fiber layer is woven on the outermost layer of the outer polytetrafluoroethylene film, so that a multi-layer layered structure with different materials is formed, the layer density is different, and the defects of poor sealing property, abrasion resistance, corrosion resistance and the like of the conventional packing are overcome.
Description
Technical Field
The utility model relates to packing, in particular to a hatch cover packing.
Background
Packing, also known as packing, is typically woven from relatively flexible threads, and strips of generally square or rectangular or circular cross-sectional area are filled into the sealed cavity to effect the seal. The packing has wide sources, easy processing, low price, reliable sealing and simple operation, so the packing is used up to date. Packing is widely used today for rotary shaft seals of centrifugal pumps, compressors, vacuum pumps, agitators and ship propellers, reciprocating shaft seals of piston pumps, reciprocating compressors, refrigerators, rotary seals of various valve stems, etc.
The existing cabin cover is also manufactured by packing, the packing which is commonly used is common packing, the packing is thin in layer and low in density, the sealing performance, the abrasion resistance and the corrosion resistance are poor, and the service life of the cabin cover is greatly influenced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a cabin cover packing which is strong in sealing performance, abrasion resistance and corrosion resistance, and the manufactured cabin cover is long in service life.
In order to solve the technical problems, the utility model adopts the following technical scheme: a cabin cover packing takes hollow nitrile rubber as a core, an inner polytetrafluoroethylene film is wrapped on the outer layer of the nitrile rubber, a polypropylene fiber layer is woven on the outer layer of the inner polytetrafluoroethylene film, an outer polytetrafluoroethylene film is further wound on the surface of the polypropylene fiber layer, and finally a polytetrafluoroethylene fiber layer is woven on the outermost layer of the outer polytetrafluoroethylene film.
The side length of the cross section of the cabin cover packing is 36-40mm, the cross section diameter of the inner hole of the middle nitrile rubber is 5mm, the diameter of the nitrile rubber is 18mm, the thickness of the polypropylene fiber layer is 35-39mm, and the thickness of the polytetrafluoroethylene fiber layer is 1mm.
According to the cabin cover packing designed by the technical scheme, the inner polytetrafluoroethylene film is wrapped on the outer layer of the nitrile rubber, the polypropylene fiber layer is woven on the outer layer of the inner polytetrafluoroethylene film, the outer polytetrafluoroethylene film is further wound on the surface of the polypropylene fiber layer, and finally the polytetrafluoroethylene fiber layer is woven on the outermost layer of the outer polytetrafluoroethylene film, so that a multi-layer layered structure with different materials is formed, the layer density is different, and the sealing property, the abrasion resistance and the corrosion resistance of the packing are obviously enhanced.
Drawings
Fig. 1 shows a schematic cross-sectional structure of a hatch cover packing according to the utility model.
Description of the embodiments
The following describes a hatch cover packing according to the present utility model with reference to the accompanying drawings.
According to the cabin cover packing disclosed by the utility model, referring to fig. 1, the whole cabin cover packing consists of five layers of structures, the hollow nitrile rubber 1 is adopted as a core, the diameter of the section of an inner hole of the nitrile rubber 1 is 5mm, the diameter is 18mm, and the innermost nitrile rubber 1 plays a role in molding, so that the whole packing can be completed to be of a proper curvature. An inner polytetrafluoroethylene film 2 is wrapped on the outer layer of the nitrile rubber 1, a polypropylene fiber layer 3 is woven on the outer layer of the inner polytetrafluoroethylene film 2, the thickness of the polypropylene fiber layer 3 is 35-39mm, the polypropylene fiber layer 3 has good elasticity, and the rebound rate of packing can be greatly improved. And finally, weaving a polytetrafluoroethylene fiber layer 5 on the outermost layer of the outer polytetrafluoroethylene film 4, wherein the polytetrafluoroethylene fiber layer 5 has the thickness of 1mm, and the polytetrafluoroethylene fiber layer 5 has the characteristics of high temperature resistance and corrosion resistance and mainly plays a role in protecting the internal structure. According to the utility model, the side length of the cross section of the cabin cover packing is 36-40mm, and the wrapped inner polytetrafluoroethylene film 2 and outer polytetrafluoroethylene film 4 play a role in improving friction medium between the multilayer structures, so that all layers are not easy to separate.
Claims (2)
1. A cabin cover packing is characterized in that hollow nitrile rubber is adopted as a core, an inner polytetrafluoroethylene film is wrapped on the outer layer of the nitrile rubber, a polypropylene fiber layer is woven on the outer layer of the inner polytetrafluoroethylene film, an outer polytetrafluoroethylene film is further wound on the surface of the polypropylene fiber layer, and finally a polytetrafluoroethylene fiber layer is woven on the outermost layer of the outer polytetrafluoroethylene film.
2. A hatch cover packing according to claim 1, wherein the hatch cover packing has a cross-sectional side length of 36-40mm, a cross-sectional diameter of an inner bore of the middle nitrile rubber of 5mm, a nitrile rubber diameter of 18mm, a polypropylene fiber layer thickness of 35-39mm, and a polytetrafluoroethylene fiber layer thickness of 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281383.5U CN220314389U (en) | 2023-05-25 | 2023-05-25 | Cabin cover packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281383.5U CN220314389U (en) | 2023-05-25 | 2023-05-25 | Cabin cover packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220314389U true CN220314389U (en) | 2024-01-09 |
Family
ID=89424633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321281383.5U Active CN220314389U (en) | 2023-05-25 | 2023-05-25 | Cabin cover packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220314389U (en) |
-
2023
- 2023-05-25 CN CN202321281383.5U patent/CN220314389U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2391781C (en) | Forged valve stem packing set | |
| CN220314389U (en) | Cabin cover packing | |
| CN201301958Y (en) | Composite sealing O-shaped ring | |
| EP1213515A1 (en) | Seal member | |
| CN101290088B (en) | Corrosion resistant compounded rubber seal membrane | |
| CN115325433B (en) | High-pressure gas cylinder sealing structure with plastic lining and fiber reinforced composite material | |
| CN218671586U (en) | Carbon fiber fully-wound hydrogen storage cylinder with plastic liner | |
| CN206054738U (en) | Politef combined seal | |
| CN212716516U (en) | Sealing strip for oil well packing and packing | |
| CN110541940B (en) | Pneumatic regulating valve with double-layer composite sealing ring | |
| CN208719552U (en) | A kind of valve-rod combination sealing element of resistance to extra-high voltage | |
| CN207364657U (en) | A kind of end valve seat of nonmetallic inner container composite cylinder | |
| CN209385700U (en) | A kind of high-performance two-way hard seal spiral valve | |
| CN214367911U (en) | O-shaped ring valve rod sealing rotary ball valve | |
| CN204828669U (en) | Flower king packing | |
| CN213332391U (en) | Pneumatic fluorine lining valve | |
| CN213451655U (en) | Sealing element with long service life | |
| CN105889513B (en) | A kind of sealing device of tubing vacuum sizing box | |
| CN215980808U (en) | Braided packing | |
| CN209262276U (en) | A kind of wear-resisting butterfly valve | |
| CN209638513U (en) | Corrosion-resistant durable type constant pressure valve diaphragm | |
| CN214618112U (en) | Plastic driving cylinder of pneumatic diaphragm valve | |
| CN211550611U (en) | Ball valve with main valve seat anti-loosening structure | |
| CN219082226U (en) | Composite graphite sealing gasket | |
| CN214367887U (en) | Novel sealing structure for ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |