CN211779464U - Pressure-resistant rubber pipe - Google Patents
Pressure-resistant rubber pipe Download PDFInfo
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- CN211779464U CN211779464U CN201921931828.3U CN201921931828U CN211779464U CN 211779464 U CN211779464 U CN 211779464U CN 201921931828 U CN201921931828 U CN 201921931828U CN 211779464 U CN211779464 U CN 211779464U
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Abstract
The utility model discloses a pressure-resistant rubber tube, which comprises a first end part, wherein the first end part comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, the reinforcing layer is formed by knitting yarns in a flat knitting mode, the specification of the yarns is 870-2250 dtex, the knitting density of the reinforcing layer is 3.5-5 pieces/cm, and when the inner diameter of the first end part is 7-10 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 4-6 needles; when the inner diameter of the first end part is 15-19 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 6-8 needles; when the inner diameter of the first end part is 23-27 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 8-10 needles; when the inner diameter of the first end part is 30-34 mm and the wall thickness is 4.0 +/-0.5 mm, the knitting number of the reinforcing layer is 12-14 needles.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a pressure-resistant rubber pipe, which is internally provided with an enhancement layer structure.
[ background of the invention ]
In many applications, hoses are used as carriers for the transport of gases, liquids, granular materials and the like, and the hoses generally include an inner layer of glue, an outer layer of glue, and a reinforcing layer disposed between the inner and outer layers of glue. According to different application fields, the inner rubber layer and the outer rubber layer can be made of natural rubber, styrene-butadiene rubber, nitrile rubber, ethylene propylene rubber, fluororubber and the like, and the enhancement layer can be knitted by cotton fibers, carbon fibers and other materials in modes of flat knitting, lock knitting, diamond knitting and the like. Taking the automobile field as an example, flat knitting is widely applied to water pipes, fuel pipes and the like due to the advantages of high knitting speed, less yarn used in the same knitting density, diameter and needle number and the like of the flat knitting as the knitting mode of the reinforcing layer, however, the traditional water pipes and fuel pipes have lower pressure-resistant grade and cannot meet the high pressure-resistant requirement of customers.
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: provides a pressure-resistant rubber hose with high pressure-resistant grade.
In order to solve the above problem, the utility model discloses following technical scheme can be adopted: a pressure-resistant rubber pipe comprises a first end portion which is connected with an external connector in a matched mode, wherein the first end portion is provided with an inserting cavity for inserting the external connector, the first end portion comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, the reinforcing layer is arranged between the inner rubber layer and the outer rubber layer, the reinforcing layer is formed by knitting a plurality of yarns in a flat knitting mode, the specification of the yarns is 870-2250 dtex, the knitting density of the reinforcing layer is 3.5-5 yarns/cm, and when the inner diameter of the first end portion is 7-10 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 4-6 needles; when the inner diameter of the first end part is 15-19 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 6-8 needles; when the inner diameter of the first end part is 23-27 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 8-10 needles; when the inner diameter of the first end part is 30-34 mm and the wall thickness is 4.0 +/-0.5 mm, the knitting number of the reinforcing layer is 12-14 needles.
In a preferred embodiment, the yarns are aramid yarns, and the specification of the yarns is 870-1670 dtex.
In a preferred embodiment, the yarn has a gauge of 1100 to 1670 dtex.
In a preferred embodiment, the yarn is a polyester yarn, and the yarn has a specification of 1100 to 2250 dtex.
In a preferred embodiment, the reinforcing layer is formed by expanding a diameter after knitting.
In a preferred embodiment, the plugging cavity is formed through a diameter expansion process.
In a preferred embodiment, the first end portion is formed by vulcanization after the diameter expansion process.
In a preferred embodiment, the pressure-resistant rubber tube comprises a main body part connected with the first end part, the main body part comprises a main inner rubber layer connected with the inner rubber layer, a main outer rubber layer connected with the outer rubber layer and a main reinforcing layer connected with the reinforcing layer, the main inner rubber layer is made of the same material as the inner rubber layer, the main outer rubber layer is made of the same material as the outer rubber layer, the main reinforcing layer is formed by knitting a plurality of yarns in a flat knitting mode, the specification of the yarns of the main reinforcing layer is the same as that of the yarns of the reinforcing layer, the knitting density of the main reinforcing layer is the same as that of the reinforcing layer, and the knitting number of the main reinforcing layer is the same as that of the reinforcing layer.
In a preferred embodiment, the pressure-resistant hose comprises a main body connected to the first end, the main body having a lumen with an inner diameter equal to that of the first end.
In a preferred embodiment, the pressure-resistant hose is a water pipe or a fuel pipe.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model discloses a to the knitting mode of enhancement layer, the specification of yarn, the knitting density of enhancement layer and the knitting number of enhancement layer carry out the adjustment of synthesizing, especially right the knitting number of enhancement layer, the utility model discloses broken through the manufacturing habit of trade, to the first end of different internal diameters and thickness, all reduced the knitting number of enhancement layer is guaranteeing when the rubber tube has the same internal diameter effectual withstand voltage level that has improved withstand voltage rubber tube.
[ description of the drawings ]
Fig. 1 is a schematic view of a preferred embodiment of the pressure-resistant rubber hose of the present invention.
Fig. 2 is a schematic sectional view of the pressure-resistant hose shown in fig. 1, in which a part of the material of the first end portion is cut away.
Fig. 3 is a partial schematic view of a reinforcing layer of the pressure-resistant hose shown in fig. 1.
[ 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.
Referring to fig. 1, the present invention provides a pressure-resistant hose 100, wherein the pressure-resistant hose 100 can be used as a water pipe or a fuel pipe. The pressure-resistant hose 100 includes a main body 1 and a first end 2 coupled to an external connector (not shown), wherein the main body 1 and the first end 2 are coupled to each other.
Referring to fig. 2, the first end portion 2 has a plugging cavity 20 for the external connector to be plugged into, and the first end portion 2 includes an inner adhesive layer 21, a reinforcing layer 22 and an outer adhesive layer 23, wherein the reinforcing layer 22 is disposed between the inner adhesive layer 21 and the outer adhesive layer 23. The material of the inner layer 21 and the outer layer 23 may be the same, for example, EPDM rubber, or may be different. Because the inner glue layer 21 and the outer glue layer 23 are arranged at different positions and are in different environments, the requirements on the inner glue layer and the outer glue layer are generally different, and therefore the materials of the inner glue layer and the outer glue layer are usually different. Of course, the pressure-resistant hose 100 is not limited to the three-layer structure, and when the pressure-resistant hose 100 includes three or more layers, the inner rubber layer 21 and the reinforcing layer 23 are not necessarily adjacent to each other, and the reinforcing layer 22 and the outer rubber layer 23 are not necessarily adjacent to each other.
Referring to fig. 2 and 3, the reinforcing layer 22 is formed by knitting a plurality of yarns 24 in a flat knitting manner, the size of the yarns 24 is 870 to 2250dtex, that is, the weight of the yarns 24 per 10000m is 870 to 2250g, and the knitting density of the reinforcing layer 22 is 3.5 to 5 yarns/cm, that is, 3.5 to 5 yarns per cm in the axial direction of the pressure-resistant hose 100. When the inner diameter of the first end portion 2 is 7-10 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer 22 is 4-6 needles, namely the number of the reinforcing layer along the circumferential direction of the pressure-resistant rubber hose 100 is 4-6 needles; when the inner diameter of the first end part 2 is 15-19 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer 22 is 6-8 needles; when the inner diameter of the first end part 2 is 23-27 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer 22 is 8-10 needles; when the inner diameter of the first end part 2 is 30-34 mm and the wall thickness is 4.0 +/-0.5 mm, the knitting number of the reinforcing layer 22 is 12-14 needles.
In some embodiments, the yarns 24 may be aramid yarns, and in such embodiments, the yarns 24 preferably have a gauge of 870-1670 dtex, and more preferably 1100-1670 dtex. In some embodiments, the yarns 24 may also be Polyester (PET) yarns, and in such embodiments, the yarns 24 preferably have a gauge of 1100 to 2250 dtex. In some embodiments, the reinforcing layer 22 is formed by expanding the diameter after knitting, and in such embodiments, the inner rubber layer 22 can be expanded to form the plugging cavity 20; of course, in other embodiments, if there is another layer of structure, such as a conductive layer (not shown), on the inner side of the inner adhesive layer 22, the plug cavity 20 is surrounded by the conductive layer; the outer rubber layer 23 may be expanded together with the reinforcing layer 22, or may be formed after the expansion is completed.
Referring to fig. 1 and 2, the main body part 1 includes a main inner adhesive layer (not shown) connected to the inner adhesive layer 21, a main outer adhesive layer (not shown) connected to the outer adhesive layer 23, and a main reinforcing layer (not shown) connected to the reinforcing layer 22. In a preferred embodiment, the material of the main inner rubber layer is the same as that of the inner rubber layer 21, the material of the main outer rubber layer is the same as that of the outer rubber layer 23, the material of the main reinforcing layer is the same as that of the reinforcing layer 22, the knitting mode of the main reinforcing layer is the same as that of the reinforcing layer 22, the yarn specification of the main reinforcing layer is the same as that of the yarn 24 of the reinforcing layer 22, the knitting density of the main reinforcing layer is the same as that of the reinforcing layer 22, and the knitting number of the main reinforcing layer is the same as that of the reinforcing layer 22. In a preferred embodiment, the main body portion 1 has a lumen (not shown) having an inner diameter equal to the inner diameter of the first end portion 2, so that the diameter expansion process can be performed in one step by one and the same mold. The optimized technical means effectively reduce the complexity of the production process and improve the production efficiency.
Specific examples are provided below:
in the case of the example 1, the following examples are given,
the embodiment provides a rubber tube with an inner diameter of 7mm and a wall thickness of 3.5mm, and the manufacturing process comprises the following steps:
firstly, forming an EPDM inner rubber layer in an extrusion molding mode;
secondly, forming a reinforcing layer on the outer side of the EPDM inner rubber layer in a flat knitting mode, wherein the yarn material and the yarn specification of the reinforcing layer, the knitting density of the reinforcing layer and the knitting number of the reinforcing layer are shown in a table 1;
thirdly, forming an EPDM outer rubber layer on the outer side of the reinforcing layer in an extrusion molding mode, wherein the inner rubber layer, the reinforcing layer and the outer rubber layer form a pipe blank integrally;
and fourthly, expanding the diameter of the tube blank by adopting a vulcanization mould, and finishing a vulcanization process to form the final rubber tube.
In the examples 2 to 8, the following examples are given,
the inner diameter, the wall thickness, the material of the inner rubber layer, the material of the outer rubber layer, the material of the yarn, the yarn specification, the knitting density of the reinforcing layer and the knitting number of the reinforcing layer of the rubber tubes of the embodiments 2 to 8 are shown in table 1, and the manufacturing process of the rubber tubes of the embodiments 2 to 8 is the same as that of the embodiment 1.
TABLE 1 examples 1 to 8
In the comparative examples 1 to 8,
the inner diameter, the wall thickness, the material of the inner rubber layer, the material of the outer rubber layer, the material of the yarn, the yarn specification, the knitting density of the reinforcing layer and the knitting number of the reinforcing layer of the rubber tubes in the comparative examples 1 to 8 are shown in the table 2, and the manufacturing process of the rubber tubes in the comparative examples 1 to 8 is the same as that of the example 1.
TABLE 2 comparative examples 1 to 8
The pressure resistance of the rubber tubes manufactured in examples 1 to 8 and comparative examples 1 to 8 was tested by the following test method:
the rubber tubes manufactured in the embodiments 1 to 8 and the comparative examples 1 to 8 are respectively connected with a metal connector in an inserting manner, the same spring hoop is clamped on the outer side of the part of the rubber tube, which is matched with the metal connector in an inserting manner, the other end of the metal connector is connected with an increasing pump, water flow is introduced through the metal connector, the pressure is continuously and stably increased to more than 8bar from 0bar, whether the matched part of the metal connector and the rubber tube leaks or not and whether the rubber tube is separated or not are observed, the leakage pressure (the pressure when liquid can leak from the space between the metal connector and the rubber tube) and the separation pressure (the pressure when the rubber tube is separated from the metal connector) of each rubber tube are recorded.
Table 3: test results
To sum up, the utility model discloses a knitting number to the knitting mode of enhancement layer, the specification of yarn, the knitting density of enhancement layer and enhancement layer carries out the adjustment of synthesizing, especially right the knitting number of enhancement layer, the utility model discloses broken through the manufacturing habit of trade, to the rubber tube of different internal diameters and thickness, all reduced the knitting number of enhancement layer is guaranteeing the effectual withstand voltage level that has improved withstand voltage rubber tube when the rubber tube has the same internal diameter.
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 (10)
1. The utility model provides a withstand voltage rubber tube, its including with an external joint cooperation first end of being connected, first end has the confession external joint male grafting chamber, first end is including interior glue film, enhancement layer and outer glue film, the enhancement layer sets up between interior glue film and the outer glue film, its characterized in that: the reinforcing layer is formed by knitting a plurality of yarns in a flat knitting mode, the specification of the yarns is 870-2250 dtex, the knitting density of the reinforcing layer is 3.5-5 yarns/cm, and when the inner diameter of the first end portion is 7-10 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 4-6 needles; when the inner diameter of the first end part is 15-19 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 6-8 needles; when the inner diameter of the first end part is 23-27 mm and the wall thickness is 3.5 +/-0.5 mm, the knitting number of the reinforcing layer is 8-10 needles; when the inner diameter of the first end part is 30-34 mm and the wall thickness is 4.0 +/-0.5 mm, the knitting number of the reinforcing layer is 12-14 needles.
2. A pressure-resistant hose as claimed in claim 1, wherein: the yarn is aramid fiber yarn, and the specification of the yarn is 870-1670 dtex.
3. A pressure-resistant hose as claimed in claim 2, wherein: the yarn is 1100-1670 dtex in specification.
4. A pressure-resistant hose as claimed in claim 1, wherein: the yarn is polyester yarn, and the specification of the yarn is 1100-2250 dtex.
5. A pressure-resistant hose as claimed in claim 1, wherein: the reinforcing layer is formed by expanding after knitting.
6. A pressure-resistant hose as claimed in claim 1, wherein: the plugging cavity is formed through a diameter expansion process.
7. A pressure-resistant hose as claimed in claim 1, wherein: the first end portion is formed by vulcanization after a diameter expansion process.
8. A pressure-resistant hose as claimed in any one of claims 1 to 7, wherein: the withstand voltage rubber tube including with the main part that the first end links to each other, the main part including with glue film in the main that interior glue film links to each other, with glue film outside the main that outer glue film links to each other and with the main enhancement layer that the enhancement layer links to each other, the material of glue film in the main with the material of interior glue film is the same, the material of glue film outside the main with the material of outer glue film is the same, main enhancement layer also adopts flat knitting mode knitting to form by a plurality of yarns, the specification of the yarn of main enhancement layer with the specification of the yarn of enhancement layer is the same, the knitting density of main enhancement layer with the knitting density of enhancement layer is the same, the knitting number of main enhancement layer with the knitting number of enhancement layer is the same.
9. A pressure-resistant hose as claimed in any one of claims 1 to 7, wherein: the pressure-resistant rubber tube comprises a main body part connected with the first end part, the main body part is provided with a tube cavity, and the inner diameter of the tube cavity is the same as that of the first end part.
10. A pressure-resistant hose as claimed in any one of claims 1 to 7, wherein: the pressure-resistant rubber pipe is a water pipe or a fuel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921931828.3U CN211779464U (en) | 2019-11-11 | 2019-11-11 | Pressure-resistant rubber pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921931828.3U CN211779464U (en) | 2019-11-11 | 2019-11-11 | Pressure-resistant rubber pipe |
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| Publication Number | Publication Date |
|---|---|
| CN211779464U true CN211779464U (en) | 2020-10-27 |
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| CN201921931828.3U Active CN211779464U (en) | 2019-11-11 | 2019-11-11 | Pressure-resistant rubber pipe |
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|---|---|
| CN (1) | CN211779464U (en) |
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- 2019-11-11 CN CN201921931828.3U patent/CN211779464U/en active Active
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