Corrosion-resistant double-layer hose

Abstract

The utility model provides a corrosion-resistant double-layer hose, which relates to the technical field of double-layer hoses and comprises an inner pipe and an outer pipe which coaxially extend, and the outer pipe is arranged on the outer side of the inner pipe. A corrosion-resistant layer is arranged on the inner surface of the inner pipe, and a wear-resistant layer is arranged on the outer side of the outer pipe; a plurality of supporting blocks are arranged between the inner pipe and the outer pipe and extend in the axis direction. According to the corrosion-resistant double-layer hose, the reinforcing ribs are arranged in the grooves of the outer pipe, the compressive strength of the corrosion-resistant double-layer hose is improved, the supporting blocks are arranged to separate the inner pipe from the outer pipe, and when the inner pipe is impacted by internal fluid, the inner pipe and the outer pipe can be separated from each other, so that the corrosion-resistant double-layer hose is not damaged. According to the corrosion-resistant double-layer hose, impact can be relieved through a medium between the inner pipe and the outer pipe, the strength of the corrosion-resistant double-layer hose is improved through the grooves of the outer pipe, meanwhile, the flexibility is guaranteed, and the corrosion-resistant double-layer hose is prevented from being broken when bent.

Description

TECHNICAL FIELD

[0001] The utility model relates to double -layer hose technical field, specifically, it relates to a kind of corrosion -resistant double -layer hose. BACKGROUND

[0002] Double -layer hose is a kind of hose with inner and outer two layers, inner layer is responsible for conveying medium, and outer layer provides additional protection and strength, usually used to transport liquid, gas or other medium.

[0003] When conveying corrosive gas liquid, the pressure capacity of the inner hose material will decrease after abrasion corrosion, so the inner hose is usually designed as a hose with corrosion -resistant material, the existing anticorrosion pipeline has good corrosion resistance, but its compression strength is low, is easily impacted by internal liquid or gas, and other factors outside lead to damage, thereby affecting its service life, the existing double -layer hose is provided with high -strength outer pipe outside inner pipe with corrosion -resistant function, to improve the compression strength of double -layer hose, but the strength of outer pipe is high, and the flexibility is insufficient, when bending, it can be broken, not only can make transportation interrupt, but also pollute the environment, cause harm. SUMMARY

[0004] The utility model discloses a kind of corrosion -resistant double -layer hoses, improve the compression strength of corrosion -resistant double -layer hose, guarantee the flexibility of corrosion -resistant double -layer hose, avoid corrosion -resistant double -layer hose damage.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a kind of corrosion -resistant double -layer hose, including coaxial line extension inner tube and outer pipe, the outer pipe is set in the outer side of the inner tube;

[0007] The inner surface of the inner tube is provided with corrosion -resistant layer, and the outer side of the outer pipe is provided with wear -resisting layer;

[0008] A plurality of support blocks are provided between the inner tube and the outer pipe, and the support blocks extend along the direction of the axis.

[0009] The outer wall of the outer pipe is provided with a plurality of grooves, the generatrix of the groove is at least around the outer pipe one circle, and the groove is provided with a reinforcing rib.

[0010] Optionally, the generatrix of the groove extends helically around the outer pipe along the axis direction.

[0011] Optionally, the generatrix of the groove is perpendicular to the axis and surrounds the outer pipe one circle.

[0012] Optionally, the cross section of the groove is trapezoidal, and the bottom wall width of the groove is greater than the opening width of the groove.

[0013] Optionally, the cross section of the reinforcing rib is circular along the extending direction of the reinforcing rib.

[0014] Optionally, the cross section of the reinforcing rib is trapezoidal along the extending direction of the reinforcing rib, and the bottom surface width of the reinforcing rib is greater than the top surface width of the reinforcing rib.

[0015] Optionally, the reinforcing rib is a reinforcing tube, and a plurality of reinforcing wires are arranged in the reinforcing tube.

[0016] Optionally, a cavity is formed between the inner tube and the outer tube, and a filler is arranged in the cavity.

[0017] Optionally, the support block is an elastic rubber block.

[0018] The utility model provides a kind of corrosion-resistant double-layer hose, including coaxial extension inner tube and outer tube, outer tube is arranged in the outside of inner tube;The inner surface of inner tube is provided with corrosion-resistant layer, and the outside of outer tube is provided with wear-resistant layer;A plurality of support blocks are arranged between inner tube and outer tube, and support block extends along the direction of axis;The outer wall of outer tube is provided with a plurality of grooves, and the generatrix of groove is at least around outer tube one circle, and reinforcing rib is arranged in groove, the utility model is reinforced by being arranged in the groove of outer tube, and the compression strength of corrosion-resistant double-layer hose is improved, and support block is arranged to separate the distance between inner tube and outer tube, when inner tube is impacted by internal fluid, it can slow down impact by medium between inner tube and outer tube, and the groove of outer tube makes that corrosion-resistant double-layer hose improves strength while guaranteeing flexibility, avoid that corrosion-resistant double-layer hose is broken when bending. ACCURATE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is one of the structure schematic diagram of corrosion-resistant double-layer hose provided for the embodiment 1 of the present application;

[0021] Figure 2 It is the second structure schematic diagram of corrosion-resistant double-layer hose provided for the embodiment 1 of the present application;

[0022] Figure 3 It is the structure of A of the structure schematic diagram of corrosion-resistant double-layer hose provided for the embodiment 1 of the present application; Figure 2 ​

[0023] Figure 4 is an enlarged schematic view of the structure at A of Embodiment 2 of the present application;

[0024] Figure 5 is an enlarged schematic view of the structure at A of Embodiment 3 of the present application.

[0025] Icon: 10, inner tube; 11, flow channel; 20, outer tube; 21, groove; 30, support block; 31, cavity; 40, circular face reinforcing rib; 41, reinforcing tube; 42, reinforcing wire; 43, ladder face reinforcing rib. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. It should be noted that, in the case of no conflict, each feature in the embodiments of the present application can be combined with each other, and the combined embodiment is still within the protection scope of the present application.

[0027] In the conveying of corrosive gas-liquid, the pressure resistance of the inner hose material will decrease after being eroded by abrasion, so the inner hose is usually designed as a hose with corrosion-resistant material. Although the existing corrosion-resistant pipe has good corrosion resistance, its compression strength is low, and it is easy to be damaged by the impact of internal liquid or gas and other external factors, thereby affecting its service life. The existing double-layer hose sets a high-strength outer tube outside the inner tube with corrosion-resistant function to improve the compression strength of the double-layer hose, but the outer tube has high strength and insufficient flexibility, which may be broken when being bent. Not only the transportation may be interrupted, but also the environment may be polluted and harm may be caused. To solve the above problems, the embodiments of the present application provide a corrosion-resistant double-layer hose, improve the compression strength of the corrosion-resistant double-layer hose, ensure the flexibility of the corrosion-resistant double-layer hose, and avoid damage to the corrosion-resistant double-layer hose.

[0028] The utility model provides a kind of corrosion-resistant double-layer hose, including coaxial line extension's inner tube 10 and outer tube 20, outer tube 20 is arranged on the outside of inner tube 10;The inner surface of inner tube 10 is provided with corrosion-resistant layer, the outside of outer tube 20 is provided with wear-resistant layer;Several support blocks 30 are arranged between inner tube 10 and outer tube 20, support block 30 extends along the direction of axis;The outer wall of outer tube 20 is provided with several grooves 21, the generatrix of groove 21 at least around outer tube 20, reinforcing rib is provided in groove 21.In corrosion-resistant double-layer hose bending, groove 21 can avoid the fracture of outer tube 20, inner tube 10 has flow channel 11, to flow liquid or gas.

[0029] Specifically, support block 30 is elastic rubber block, which can ensure the overall compression strength of corrosion-resistant double-layer hose. The cross section of groove 21 is trapezoidal, and the bottom wall width of groove 21 is greater than the opening width of groove 21.

[0030] The cavity 31 is formed between the inner tube 10 and the outer tube 20, and the filler is arranged in the cavity 31. The filler can be glass wool or polyurethane foam. The polyurethane foam and the glass wool have compression resistance. In addition, the glass wool also has the properties of heat preservation, heat insulation, sound absorption and noise reduction. The corrosion-resistant double-layer hose not only improves the compression strength, but also improves the heat preservation and noise reduction performance.

[0031] As shown in Figure 1 , Figure 2 and Figure 3 , the generatrix of the groove 21 of the embodiment 1 of the application extends spirally along the axis direction around the outer tube 20. The cross section of the reinforcing rib is circular along the extension direction of the reinforcing rib, forming a circular surface reinforcing rib 40. In other embodiments, the generatrix of the groove 21 can be perpendicular to the axis and wrap around the outer tube 20 once, so that the reinforcing rib forms multiple reinforcing loops and is sleeved on the outer periphery of the outer tube 20.

[0032] As shown in Figure 4 , the embodiment 2 of the application, the cross section of the reinforcing rib is trapezoidal along the extension direction of the reinforcing rib, and the bottom width of the trapezoidal surface reinforcing rib 43 is greater than the top width of the trapezoidal surface reinforcing rib 43.

[0033] As shown in Figure 4 , the embodiment 2 of the application, the reinforcing rib is a reinforcing tube 41, and a plurality of reinforcing wires 42 are arranged in the reinforcing tube 41. The reinforcing wire 42 can be a metal wire, and the reinforcing tube 41 and the reinforcing wire 42 are filled with polyurethane foam.

[0034] The various embodiments provided by the utility model improve the compression strength of the corrosion-resistant double-layer hose by arranging the reinforcing ribs in the groove 21 of the outer pipe 20, arrange the support block 30 to separate the inner pipe 10 and the outer pipe 20 by a distance, when the inner pipe 10 is impacted by the internal fluid, the impact can be slowed down by the medium between the inner pipe 10 and the outer pipe 20, and the groove 21 of the outer pipe 20 makes the corrosion-resistant double-layer hose improve the strength while ensuring the flexibility, avoiding the corrosion-resistant double-layer hose from breaking when bending.

[0035] The above is only the preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A corrosion resistant double-walled hose comprising an inner tube (10) and an outer tube (20) extending coaxially, characterized in that The outer tube (20) is arranged outside the inner tube (10); The inner surface of the inner tube (10) is provided with a corrosion-resistant layer, and the outer side of the outer tube (20) is provided with a wear-resistant layer; A plurality of support blocks (30) are arranged between the inner tube (10) and the outer tube (20), and the support blocks (30) extend in the direction of the axis; The outer wall of the outer tube (20) is provided with a plurality of grooves (21), the generatrix of the groove (21) at least surrounds the outer tube (20) one turn, and a reinforcing rib is arranged in the groove (21).

2. The corrosion-resistant double-layer hose according to claim 1, characterized by The generatrix of the groove (21) spirally extends around the outer tube (20) in the direction of the axis.

3. The corrosion-resistant double-layer hose according to claim 1, characterized by The generatrix of the groove (21) is perpendicular to the axis and surrounds the outer tube (20) one turn.

4. The corrosion-resistant double-layer hose according to claim 1, characterized by The cross section of the groove (21) is trapezoidal, and the bottom wall width of the groove (21) is greater than the opening width of the groove (21).

5. The corrosion-resistant double-layer hose according to claim 1, characterized by The cross section of the reinforcing rib is circular along the extension direction of the reinforcing rib.

6. The corrosion-resistant double-layer hose according to claim 1, characterized by The cross section of the reinforcing rib is trapezoidal along the extension direction of the reinforcing rib, and the bottom surface width of the reinforcing rib is greater than the top surface width of the reinforcing rib.

7. The corrosion-resistant double-layer hose according to claim 1, characterized by The reinforcing rib is a reinforcing tube (41), and a plurality of reinforcing wires (42) are arranged in the reinforcing tube (41).

8. The corrosion-resistant double-layer hose according to claim 1, characterized by The inner tube (10) and the outer tube (20) form a cavity (31) therebetween, and the cavity (31) is filled with a filler.

9. The corrosion-resistant double-layer hose according to claim 1, characterized by The support block (30) is an elastic rubber block.

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