Aramid fiber hybrid high-pressure hose

Abstract

The utility model provides an aramid fiber mixed weaving high-pressure hose which comprises an outer fabric mixed weaving layer, the outer fabric mixed weaving layer is of a double-warp double-weft twill mixed weaving structure, and an outer coating is arranged on the outer wall of the outer fabric mixed weaving layer. The inner fabric mixed weaving layer is of a double-warp double-weft twill mixed weaving structure, and an inner coating is arranged on the inner wall of the inner fabric mixed weaving layer; and the outer fabric mixed-weaving layer and the inner fabric mixed-weaving layer are connected through binding wefts. The outer fabric mixed-weaving layer and the inner fabric mixed-weaving layer are both of a double-warp double-weft double-twill weave structure, the inner fabric mixed-weaving layer and the outer fabric mixed-weaving layer are connected with each other through the weft, the inner fabric mixed-weaving layer and the outer fabric mixed-weaving layer are connected into a whole which is inseparable and misplaced, and therefore the belt face is smooth. The water flow resistance of the composite hose is greatly reduced, and meanwhile, the wear resistance of the high-pressure-resistant composite hose is also improved by the inner and outer double woven layers.

Description

Technical Field

[0001] The utility model relates to the technical field of hoses, in particular to an aramid mixed high-pressure hose. Background Art

[0002] With the development of social economy, infrastructure equipment is constantly improving and upgrading, and the technology of ultra-high pressure fluid transportation is becoming more and more widely used, such as the transportation of compressed air, high-pressure liquid, powder, etc. Since the high-pressure hose is usually not fixed in position, it is often dragged or easily squeezed by machinery and equipment during use, which can easily cause wear or extrusion deformation of the high-pressure hose. Therefore, the demand for high-strength hoses with high pressure resistance, good wear resistance and long service life is increasing.

[0003] The composite hoses currently produced at home and abroad usually have the following two structures:

[0004] The first one sets a single braided layer as a reinforcement, and the hose has insufficient pressure resistance;

[0005] The second type sets two braided layers as reinforcement, but the two-layer structure is usually a simple superposition of one single braided layer inside another. Although this type of reinforcement has slightly improved pressure-bearing strength, it has poor softness, weak adhesion between the coating and the braided layer, and the inner and outer braided layers cannot fit tightly, which can easily cause problems such as hose misalignment, rough surface, and high water flow resistance, and cannot meet the market demand for high-end hoses. Utility Model Content

[0006] The utility model aims to provide an aramid mixed high-pressure hose in view of the above problems existing in the existing composite hose.

[0007] The technical solution of the utility model is:

[0008] The utility model provides an aramid mixed high-pressure hose, comprising:

[0009] An outer fabric mixed layer, wherein the outer fabric mixed layer is a double-warp and double-weft twill mixed structure, and the outer wall of the outer fabric mixed layer has an outer coating;

[0010] An inner fabric mixed layer, wherein the inner fabric mixed layer is a double-warp and double-weft twill mixed structure, and the inner wall of the inner fabric mixed layer has an inner coating;

[0011] The outer fabric mixed layer and the inner fabric mixed layer are connected by a binding weft thread.

[0012] Furthermore, the outer fabric mixed layer includes an outer woven layer aramid warp and an outer woven layer polyarylate fiber weft; the inner fabric mixed layer includes an inner woven layer aramid warp and an inner woven layer polyarylate fiber weft; wherein the outer woven layer polyarylate fiber weft and the inner woven layer polyarylate fiber weft are connected by a connecting weft, so that the outer fabric mixed layer and the inner fabric are mixed and connected.

[0013] Furthermore, the structure and the number of circulation units of the outer mixed fabric layer and the inner mixed fabric layer are the same.

[0014] Furthermore, the diameter of the aramid mixed high-pressure hose is 100-600 mm.

[0015] Furthermore, the specifications of the aramid warp threads of the outer braided layer and the aramid warp threads of the inner braided layer are both 9000D; the specifications of the polyarylate fiber weft threads of the outer braided layer and the polyarylate fiber weft threads of the inner braided layer are 10500D×2.

[0016] Furthermore, the total number of the aramid warp threads of the outer braided layer and the total number of the aramid warp threads of the inner braided layer are both 560-608, and satisfy 6n+2, where n represents the number of cyclic units.

[0017] Furthermore, the density of the polyarylate fiber wefts of the outer braided layer and the polyarylate fiber wefts of the inner braided layer is 30-32 wefts / 10 cm.

[0018] Furthermore, the specification of the connecting weft is 1500D.

[0019] Furthermore, the inner coating is an elastic coating.

[0020] Furthermore, the outer coating is an elastic coating or a color paste coating.

[0021] Beneficial effects of the utility model:

[0022] In the utility model, both the outer fabric mixed layer and the inner fabric mixed layer adopt a double-warp, double-weft and double-twill structure, and the inner and outer fabric mixed layers are connected to each other by weft threads, so that the inner and outer fabric mixed layers are connected into an inseparable and dislocated whole, so that the belt surface is smooth; the hose composited with this as the reinforcement greatly reduces the water flow resistance, and at the same time the inner and outer double braided layers also improve the wear resistance of the high-pressure composite hose.

[0023] In the utility model, aramid warp and polyarylate fiber weft of different specifications are used to form a woven structure; the specification of the aramid warp is 9000D, and the specification of the polyarylate fiber weft is 10500D×2; and the weft is connected by a connecting weft of 1500D, which effectively improves wear resistance and softness.

[0024] The inner wall of the utility model adopts elastic coating, and the outer wall adopts elastic coating or color paste coating, so that the composite hose has excellent softness and marking ability, and meets the long-distance transportation requirements of various media.

[0025] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0027] Figure 1 It is a structural schematic diagram of the aramid mixed high-pressure hose of the utility model. Implementation

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein.

[0029] See also Figure 1 As shown, the utility model provides an aramid mixed high-pressure hose, comprising:

[0030] An outer fabric mixed layer 2, wherein the outer fabric mixed layer 2 is a double-warp and double-weft twill mixed structure, and an outer coating layer 1 is provided on the outer wall of the outer fabric mixed layer 2;

[0031] An inner fabric mixed layer 3, wherein the inner fabric mixed layer 3 is a double-warp and double-weft twill mixed structure, and an inner coating layer 4 is provided on the inner wall of the inner fabric mixed layer 3;

[0032] The outer fabric mixed layer 2 and the inner fabric mixed layer 3 are connected by a binding weft thread.

[0033] Specifically, the outer fabric mixed layer 2 includes an outer woven layer aramid warp 6 and an outer woven layer polyarylate fiber weft 5; the inner fabric mixed layer 3 includes an inner woven layer aramid warp 8 and an inner woven layer polyarylate fiber weft 7; wherein the outer woven layer polyarylate fiber weft 5 and the inner woven layer polyarylate fiber weft 7 are interconnected, so that the outer fabric mixed layer 2 and the inner fabric mixed layer 3 are connected.

[0034] Among them, the specification of the outer braided layer aramid warp 6 and the inner braided layer aramid warp 8 is selected to be 9000D, and the total number of warps can be between 560 and 608. If the total number of warps is too small, the warp pressure cannot be met, and if the total number of warps is too large, it is not conducive to extrusion molding. At the same time, the total number must satisfy the law of 6n+2 to form a cycle; the specification of the outer braided layer polyarylate fiber weft 5 and the inner braided layer polyarylate fiber weft 7 is selected to be 10500D×2, and the weft density is controlled between 30-32 wefts / 10cm. The optional specification of the connecting weft connecting the inner and outer layers of the braid is 1500D, which has little effect on the overall pressure of the hose.

[0035] In this embodiment, the outer fabric mixed layer 2 and the inner fabric mixed layer 3 both adopt a double warp, double weft and double twill structure, and the inner and outer fabric mixed layers are interconnected by weft threads, connecting the inner and outer fabric mixed layers into an inseparable and staggered whole, so that the belt surface is smooth; the hose composited with this as the reinforcement greatly reduces the water flow resistance, and at the same time the inner and outer double braided layers also improve the wear resistance of the high-pressure composite hose.

[0036] The inner wall of the utility model adopts elastic coating, and the outer wall adopts elastic coating or color paste coating, so that the composite hose has excellent softness and marking ability, and meets the long-distance transportation requirements of various media.

[0037] The manufacturing process of the high-pressure hose of the utility model is as follows:

[0038] During the weaving process of the woven reinforcement layer, at least three shuttles are used to complete the mixed weaving. The first shuttle is used to guide the outer woven layer polyarylate fiber weft thread 5 of the outer fabric mixed layer 2, the second shuttle is used to guide the inner woven layer polyarylate fiber weft thread 7 of the inner fabric mixed layer 3, and the third shuttle is used to connect the weft threads of the inner and outer fabric mixed layers. The three shuttles move separately to form n weaving units.

[0039] After the fabric braided layer is formed, the outer coating 1 and the inner coating 4 are extruded and formed on the inner and outer sides of the braided layer through a primary extrusion molding machine, thus forming an aramid mixed braided high-pressure hose that can withstand a pressure of 21 MPa. The braided layer of the overall double twill structure has a smooth surface, and the aramid warp threads of the inner and outer braided layers have a large contact area with the coating, which can form a large bonding force and a large pressure bearing capacity.

[0040] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A aramid mixed high-pressure hose, characterized in that include: An outer fabric mixed layer (2), wherein the outer fabric mixed layer (2) is a double-warp and double-weft twill mixed structure, and the outer wall of the outer fabric mixed layer (2) has an outer coating (1); An inner fabric mixed layer (3), wherein the inner fabric mixed layer (3) is a double-warp and double-weft twill mixed structure, and the inner wall of the inner fabric mixed layer (3) has an inner coating (4); The outer fabric mixed layer (2) and the inner fabric mixed layer (3) are connected via a binding weft thread.

2. The aramid mixed high-pressure hose according to claim 1, characterized in that: The outer fabric mixed layer (2) comprises an outer braided layer of aramid warp threads (6) and an outer braided layer of polyarylate fiber weft threads (5); The inner fabric mixed layer (3) comprises an inner braided layer of aramid warp threads (8) and an inner braided layer of polyarylate fiber weft threads (7); The polyarylate fiber weft threads (5) of the outer woven layer and the polyarylate fiber weft threads (7) of the inner woven layer are connected by a connecting weft thread, so that the outer fabric mixed layer (2) and the inner fabric mixed layer (3) are connected.

3. The aramid mixed high-pressure hose according to claim 1, characterized in that: The outer fabric mixed layer (2) and the inner fabric mixed layer (3) have the same structure and the same number of circulation units.

4. The aramid mixed high-pressure hose according to claim 1, characterized in that: The diameter of the aramid mixed high-pressure hose is 100-600 mm.

5. The aramid mixed high-pressure hose according to claim 2, characterized in that: The specifications of the outer braided layer aramid warp threads (6) and the inner braided layer aramid warp threads (8) are both 9000D; The specifications of the outer braided layer polyarylate fiber weft (5) and the inner braided layer polyarylate fiber weft (7) are 10500D×2.

6. The aramid mixed high-pressure hose according to claim 2, characterized in that: The total number of the outer braided layer aramid warp threads (6) and the total number of the inner braided layer aramid warp threads (8) are both 560-608, and satisfy 6n+2, where n represents the number of cyclic units.

7. The aramid mixed high-pressure hose according to claim 2, characterized in that: The density of the outer braided layer polyarylate fiber weft (5) and the inner braided layer polyarylate fiber weft (7) is 30-32 wefts / 10 cm.

8. The aramid mixed high-pressure hose according to claim 1 or 2, characterized in that: The specification of the connecting weft is 1500D.

9. The aramid mixed high-pressure hose according to claim 1, characterized in that: The inner coating (4) is an elastic coating.

10. The aramid mixed high-pressure hose according to claim 1, characterized in that: The outer coating (1) is an elastic coating or a color paste coating.

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