CN209781906U - Hose for fuel oil transmission - Google Patents

Abstract

The utility model discloses a hose for fuel transmission, hose from interior to exterior includes barrier layer, tie coat, enhancement layer and inoxidizing coating in proper order, and the material of barrier layer is thermoplasticity fluorine-containing vulcanized elastomer, and the material of tie coat is fluorine-containing rubber, and the material of enhancement layer is aramid fiber or polyethylene terephthalate fibre or polyamide, and the material of inoxidizing coating is epichlorohydric ether rubber or ethylene acrylate rubber or acrylic rubber. Due to the arrangement, on one hand, the bonding layer can be well bonded with the barrier layer and the protective layer, so that the fuel oil permeability resistance of the hose is ensured; on the other hand, under the same performance requirement, the thickness of the barrier layer can be reduced, so that the overall flexibility of the hose can be improved; finally, no other rubber layer is arranged between the fluorine-containing rubber used as the bonding layer and the reinforced layer, so that the overall thickness of the hose can be reduced under the requirement of the same performance.

Description

Hose for fuel oil transmission

[ technical field ] A method for producing a semiconductor device

The utility model relates to a hose for fuel oil transmission, which comprises a thermoplastic fluorine-containing vulcanized elastomer layer.

[ background of the invention ]

In the field of automobiles and the like, thermoplastic fluorinated vulcanized elastomers (F-TPV) are widely used for fuel hoses due to good fuel permeation resistance. However, with the implementation of the sixth nation, the use of only F-TPV flexible materials has not been able to meet the higher and higher emission requirements of the national standards. Meanwhile, the inner layer and the outer layer connected with the F-TPV directly influence the adhesion property between the F-TPV and adjacent materials and the permeability of the hose to fuel.

Therefore, a new technical solution is needed to solve the above technical problems.

[ Utility model ] content

The utility model discloses the technical problem that will solve lies in: a hose for fuel transfer is provided, which has good adhesion between the respective layers and good resistance to fuel permeation.

In order to solve the above problem, the utility model discloses following technical scheme can be adopted: the utility model provides a hose for fuel transmission, hose from interior to exterior includes barrier layer, tie coat, enhancement layer and inoxidizing coating in proper order, the material of barrier layer is thermoplasticity fluorine-containing vulcanized elastomer, the material of tie coat is fluorine-containing rubber, the material of enhancement layer is aramid fiber or polyethylene terephthalate fibre or polyamide, the material of inoxidizing coating is epichlorophdrin rubber or ethylene acrylate rubber or acrylic ester rubber.

In a preferred embodiment, the inner side of the barrier layer is provided with an assembly layer.

In a preferred embodiment, the material of the mounting layer is a fluorine-containing rubber.

In a preferred embodiment, the thickness of the buildup layer is 0.5-1.5 mm.

In a preferred embodiment, the thickness of the barrier layer is 0.1-0.3 mm.

In a preferred embodiment, the thickness of the adhesive layer is 0.5-2.0 mm.

In a preferred embodiment, the thickness of the protective layer is 1.0-2.0 mm.

In a preferred embodiment, the barrier layer and the adhesive layer are bonded together by vulcanization, and the adhesive layer and the protective layer are bonded together by vulcanization.

In a preferred embodiment, the reinforcement layer is a mesh structure woven or wound or knitted from a number of yarns outside the adhesive layer.

In a preferred embodiment, the adhesive layer is located completely inside the reinforcing layer, and the protective layer is partially cross-linked and bonded to the adhesive layer through the reinforcing layer.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model selects the fluorine-containing rubber as the bonding layer, and the bonding layer is directly contacted with the enhancement layer, on one hand, the bonding layer can realize good bonding with the barrier layer and the protective layer so as to ensure the fuel oil permeability resistance of the hose; on the other hand, under the same performance requirement, the thickness of the barrier layer can be reduced, so that the overall flexibility of the hose can be improved; finally, no other rubber layer is arranged between the fluorine-containing rubber used as the bonding layer and the reinforced layer, so that the overall thickness of the hose can be reduced under the requirement of the same performance.

[ description of the drawings ]

Fig. 1 is a schematic view of a hose for fuel delivery according to a first embodiment of the present invention.

Fig. 2 is a schematic view of a hose for fuel delivery according to a second embodiment of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, other embodiments obtained by the skilled in the art without creative work all belong to the protection scope of the present invention.

Fig. 1 shows a first embodiment of the present invention of a hose 100 for fuel delivery, but of course, the hose 100 of the present invention may also be used for delivering other liquids suitable for delivery.

Hose 100 is the four-layer structure, and it includes barrier layer 1, tie coat 2, enhancement layer 3 and inoxidizing coating 4 from interior to exterior in proper order, barrier layer 1, tie coat 2, enhancement layer 3 and inoxidizing coating 4 coaxial arrangement. The material of barrier layer 1 is thermoplastic fluorine-containing vulcanized elastomer, the material of tie coat 2 is fluorine-containing rubber, the material of enhancement layer 3 is aramid fiber or polyethylene terephthalate fiber or polyamide, the material of inoxidizing coating 4 is epichlorohydrin rubber or ethylene acrylate rubber or acrylate rubber.

The thermoplastic fluorovulcanized elastomer is commercially abbreviated as F-TPV. The fluororubbers are commercially abbreviated as FKM. The aramid fiber is commercially abbreviated as AR. The polyethylene terephthalate fiber is commercially abbreviated PET. The polyamide is commercially abbreviated as PA, also known as nylon. The epichlorohydrin rubber is commercially abbreviated as ECO, also known as chlorohydrin rubber. The ethylene acrylate rubber is commercially abbreviated as AEM. The acrylate rubber is commercially abbreviated as ACM.

The use of F-TPV as the material of the barrier layer 1 can well block the fuel in the hose from permeating to the outside, and it has more excellent fuel permeation resistance, better low temperature properties than FKM, and more excellent flexibility than fluororesin. In a preferred embodiment, the thickness of the barrier layer 1 is 0.1-0.3 mm.

The use of FKM as the material of the adhesive layer 2, which provides good adhesion to both the F-TPV used as the barrier layer 1 and the ECO or AEM or ACM used as the protective layer 4, greatly improves the adhesion between the layers of the hose 100, compared to the direct adhesion of F-TPV to ECO or AEM or ACM. Since FKM itself also has a better resistance to fuel permeation, the adhesive layer 2 can further improve the resistance to fuel permeation of the hose 100. The thickness of the barrier layer 1 can be reduced for the same performance requirements, which in turn can improve the overall flexibility of the hose 100. The utility model discloses select FKM as tie coat 2, and with tie coat 2 set up directly with 3 contacts of enhancement layer are compared and are usually in among the prior art 3 inboard of enhancement layer additionally sets up one deck ECO or AEM or ACM, both can guarantee fine adhesive property between each layer structure of hose 100 can reduce again under the equal requirement the holistic thickness of hose 100 because, the FKM's of equal thickness resistant fuel is better than ECO or AEM or ACM. In a preferred embodiment, the thickness of the adhesive layer 2 is 0.5-2.0 mm.

The material of the reinforcement layer 3, which is AR or PET or PA, is usually woven or wound or knitted in the form of yarn on the outer side of the adhesive layer for improving the pressure resistance of the hose 100, and in actual manufacturing, different types of yarn can be selected according to the use temperature and working pressure of the hose 100.

The material of the protective layer 4 is ECO, AEM, or ACM, which mainly resists the external environment temperature, ozone, and the like, and different materials can be selected according to the environment temperature. In a preferred embodiment, the thickness of the protective layer 4 is 1.0-2.0 mm.

Preferably, the barrier layer 1 and the adhesive layer 2 are bonded together by vulcanization, and the adhesive layer 2 and the protective layer 4 are bonded together by vulcanization. The chemical reactions between FKM and F-TPV, FKM and ECO or AEM or ACM occur during vulcanization, causing physical and chemical crosslinking between the two layers, resulting in adhesion between the two layers.

Preferably, the reinforcement layer 3 is a net structure woven or wound or knitted from a plurality of yarns on the outer side of the adhesive layer. The adhesive layer 2 is completely positioned at the inner side of the reinforced layer 3, and the protective layer 4 is partially penetrated through the reinforced layer 3 and is bonded with the adhesive layer 2 in a cross-linking way. Chemical cross-linking between FKM and ECO or AEM or ACM is created to bind the reinforcement layer 3 between the binding layer 2 and the protective layer 4.

Fig. 2 shows a hose 200 for fuel delivery according to a second embodiment of the present invention, wherein the hose 200 of this embodiment has substantially the same shape, structure, material and process as the hose 100 of the first embodiment, and the same reference numerals will be used for the same structure in this embodiment. The following focuses on the differences.

The hose 200 of this embodiment has a five-layer structure, and the hose 200 is further provided with an assembly layer 5 on the inner side of the barrier layer 1. The material of the mounting layer 5 is fluorine-containing rubber, so that a fuel hose with double FKM layers is formed. The F-TPV material used as the barrier layer 1 is hard, is not favorable for the assembly of the hose, such as the buckling of the assembly, and is difficult to satisfy a high assembly sealability, and the FKM is selected as the assembly layer 5, which can improve both the assembly sealability of the hose 200 and the assembly sealability, and can further improve the fuel permeation resistance of the hose 200. The thickness of the barrier layer 1 can be reduced for the same performance requirements, which in turn can improve the overall flexibility of the hose 200. In a preferred embodiment, the thickness of the buildup layer is 0.5 to 1.5 mm.

To sum up, the utility model discloses a right the layer structure, each layer material, each layer thickness and the technology of hose 100, 200 are designed and are selected to realize right hose 100, 200's optimization for its cost, performance and volume etc. are all more reasonable.

It is to be understood that the above-described embodiments of the present invention can be combined with each other to obtain further embodiments, without conflict. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Claims (8)

1. A hose for fuel transfer, comprising: the hose from interior to exterior includes barrier layer, tie coat, enhancement layer and inoxidizing coating in proper order, the material of barrier layer is thermoplasticity fluorine-containing vulcanized elastomer, the material of tie coat is fluorine-containing rubber, the material of enhancement layer is aramid fiber or polyethylene terephthalate fibre or polyamide, the material of inoxidizing coating is epichloro ether rubber or ethylene acrylate rubber or acrylate rubber, the enhancement layer is woven or twined or knitted by a plurality of yarns the network structure in the outside of tie coat, the barrier layer with be in the same place through vulcanizing the bonding between the tie coat, the tie coat with be in the same place through vulcanizing the bonding between the inoxidizing coating.

2. A hose for fuel delivery according to claim 1, wherein: the inside of barrier layer is provided with the assembly layer.

3. A hose for fuel delivery according to claim 2, wherein: the material of the assembling layer is fluorine-containing rubber.

4. A hose for fuel delivery according to claim 3, wherein: the thickness of the assembly layer is 0.5-1.5 mm.

5. A hose for fuel delivery according to any one of claims 1 to 4, wherein: the thickness of the barrier layer is 0.1-0.3 mm.

6. A hose for fuel delivery according to any one of claims 1 to 4, wherein: the thickness of the bonding layer is 0.5-2.0 mm.

7. A hose for fuel delivery according to any one of claims 1 to 4, wherein: the thickness of the protective layer is 1.0-2.0 mm.

8. A hose for fuel delivery according to any one of claims 1 to 4, wherein: the bonding layer is completely positioned on the inner side of the reinforced layer, and the protective layer partially penetrates through the reinforced layer to be bonded with the bonding layer in a cross-linking mode.