Corrosion resistant metal hose

Abstract

The utility model relates to metal hose technical field, and disclose a kind of corrosion-resistant metal hose, including metal hose, the outer wall of metal hose is fixedly connected with outer corrosion-resistant layer, the outer wall of outer corrosion-resistant layer is fixedly connected with steel wire net, the outer surface of steel wire net is fixedly connected with braided layer, the inner wall of metal hose is fixedly connected with inner corrosion-resistant layer.The metal hose adopts double-layer corrosion-resistant structure to realize overall protection.The outer layer is made of fluorine rubber material, which can effectively resist industrial oil stains and mild chemical spray corrosion, providing reliable protection for the outer layer of the hose, making it stable in performance in environments such as mechanical hydraulic systems and automobile engine compartments that are easily exposed to oil stains and mild chemicals.The inner layer is made of polytetrafluoroethylene material, which can resist strong acid, strong alkali and other strong corrosive media, ensuring that the hose is not easily damaged when exposed to corrosive media, greatly improving its service life in complex corrosive environments and expanding its application range.

Description

Technical Field

[0001] This utility model relates to the field of metal hose technology, specifically a corrosion-resistant metal hose. Background Technology

[0002] In industrial production, machinery manufacturing, chemical transportation and other fields, metal hoses are widely used to connect different equipment or pipelines to transport liquids, gases and other media due to their good flexibility, pressure resistance and adaptability.

[0003] According to announcement number CN 218972042 U, a metal flexible hose includes: an upper connecting plate, a lower connecting plate, and a flexible hose. One end of the flexible hose is connected to the upper connecting plate, and the other end of the flexible hose is connected to the lower connecting plate. The flexible hose includes an outer rubber layer, a spiral protective sleeve, a metal mesh tube, and an inner rubber layer, which are arranged sequentially from the outside to the inside.

[0004] This device increases the overall support strength of the hose from the inside by incorporating a spiral protective sleeve, preventing the hose from being flattened by external pressure. The metal mesh tube is made of elastic metal, and the addition of metal mesh on both sides further increases the overall strength of the hose. However, in terms of corrosion resistance, this device still relies heavily on the corrosion resistance of its own metal material or only has a single, simple protective layer, which is insufficient to cope with complex corrosive environments. When conveying highly corrosive media such as strong acids, strong alkalis, and strong oxidants, the inner wall of the hose is easily corroded, leading to thinning of the wall, decreased strength, and even leakage. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant metal hose to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant metal hose, comprising a metal hose, an outer corrosion-resistant layer fixedly connected to the outer wall of the metal hose, a wire mesh fixedly connected to the outer wall of the outer corrosion-resistant layer, a braided layer fixedly connected to the outer surface of the wire mesh, an inner corrosion-resistant layer fixedly connected to the inner wall of the metal hose, a first flange fixedly connected to both ends of the metal hose, a second flange fixedly connected to the first flange by bolts, an annular groove formed on one side of the first flange, four limiting blocks fixedly connected in a circular array to the outer wall of the annular groove, a limiting ring fixedly connected to the inner wall of the annular groove, a sealing ring inserted into the annular groove, and a pressure ring fixedly connected to one side of the second flange.

[0007] Preferably, the outer corrosion-resistant layer is made of fluororubber, which can resist corrosion from industrial oil and mild chemical sprays, and is suitable for environments such as mechanical hydraulic systems and automobile engine compartments.

[0008] Preferably, the wire mesh is tightly woven to form a high-strength mesh structure. When the pressure of the medium inside the metal hose increases, the wire mesh disperses the stress through circumferential tension, preventing the corrugated pipe from rupturing due to local overload.

[0009] Preferably, the woven layer serves as an outer barrier that can resist mechanical damage such as scratches from sharp objects and impacts from stones.

[0010] Preferably, the inner corrosion-resistant layer is made of polytetrafluoroethylene, which can withstand strong acids, strong alkalis, strong oxidants, organic solvents, and corrosive media such as chloride ions and fluorides.

[0011] Preferably, the limiting block and the limiting ring limit the sealing ring, so that the sealing ring will not easily fall out of the ring groove during installation, thereby ensuring that the sealing ring is in the correct position during installation.

[0012] Compared with the prior art, the present invention provides a corrosion-resistant metal hose, which has the following beneficial effects:

[0013] 1. This corrosion-resistant metal hose achieves comprehensive protection through a double-layer corrosion-resistant structure. The outer corrosion-resistant layer is made of fluororubber, which can effectively resist corrosion from industrial oil and mild chemical sprays, providing reliable protection for the outer layer of the metal hose. This allows it to maintain stable performance in environments where it is easily exposed to oil and mild chemicals, such as mechanical hydraulic systems and automotive engine compartments. The inner corrosion-resistant layer is made of polytetrafluoroethylene, which can withstand strong acids, strong alkalis, strong oxidants, organic solvents, as well as chloride ions, fluorides, and other highly corrosive media. This ensures that the hose is not easily damaged when in contact with corrosive media, greatly extending the service life of the hose in complex corrosive environments and broadening its application range.

[0014] 2. In this corrosion-resistant metal hose, the annular groove, limiting block, and limiting ring on the first flange work together to reliably limit the sealing ring, ensuring that the sealing ring will not easily fall out of the annular groove during installation and will always be in the correct position. In conjunction with the pressure ring on the second flange, the sealing ring can be tightly fitted after the bolts are tightened, which significantly improves the sealing performance of the flange connection, effectively prevents media leakage, and ensures the stable operation of the conveying system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the structural steel wire mesh and outer corrosion-resistant layer of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the structural metal flexible hose and inner corrosion-resistant layer of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram showing the first and second flanges of the present invention disassembled.

[0020] In the diagram: 101, metal flexible hose; 102, outer corrosion-resistant layer; 103, wire mesh; 104, braided layer; 105, inner corrosion-resistant layer; 106, first flange; 107, second flange; 108, annular groove; 109, limiting block; 1011, limiting ring; 1012, sealing ring; 1013, pressure ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] This utility model provides the following technical solution:

[0024] Example 1

[0025] Please see Figure 1-4This utility model provides a technical solution: a corrosion-resistant metal hose, including a metal hose 101, an outer corrosion-resistant layer 102 fixedly connected to the outer wall of the metal hose 101, a wire mesh 103 fixedly connected to the outer wall of the outer corrosion-resistant layer 102, a braided layer 104 fixedly connected to the outer surface of the wire mesh 103, an inner corrosion-resistant layer 105 fixedly connected to the inner wall of the metal hose 101, a first flange 106 fixedly connected to both ends of the metal hose 101, a second flange 107 fixedly connected to the first flange 106 by bolts, an annular groove 108 opened on one side of the first flange 106, four limiting blocks 109 fixedly connected in a circular array to the outer wall of the annular groove 108, a limiting ring 1011 fixedly connected to the inner wall of the annular groove 108, a sealing ring 1012 inserted into the annular groove 108, and a pressure ring 1013 fixedly connected to one side of the second flange 107.

[0026] The outer corrosion-resistant layer 102 is made of fluororubber, which can resist corrosion from industrial oil and light chemical sprays, making it suitable for environments such as mechanical hydraulic systems and automotive engine compartments.

[0027] The wire mesh 103 forms a high-strength mesh structure through tight weaving. When the pressure of the medium inside the metal hose 101 increases, the wire mesh 103 disperses the stress through circumferential tension, preventing the corrugated pipe from breaking due to local overload.

[0028] The woven layer 104 serves as an outer barrier, protecting against mechanical damage such as scratches from sharp objects and impacts from stones.

[0029] The inner corrosion-resistant layer 105 is made of polytetrafluoroethylene, which can withstand strong acids, strong alkalis, strong oxidants, organic solvents, and corrosive media such as chloride ions and fluorides.

[0030] The limiting block 109 and the limiting ring 1011 limit the sealing ring 1012, so that the sealing ring 1012 will not easily fall out of the ring groove 108 during installation, thus ensuring that the sealing ring 1012 is in the correct position during installation.

[0031] In actual operation, when this device is used, in terms of the basic function of media transportation, the metal hose 101 serves as the core channel, undertaking the task of transporting various media. Its two ends, the first flange 106 and the second flange 107, are bolted together to connect with external pipelines or equipment, establishing a complete path for media flow. Regarding corrosion protection, the inner corrosion-resistant layer 105 tightly adheres to the inner wall of the metal hose 101. Made of polytetrafluoroethylene (PTFE), it can directly contact corrosive media such as strong acids, strong alkalis, and strong oxidants, forming the first line of defense to prevent corrosion of the inner wall of the metal hose 101. The outer corrosion-resistant layer 102, made of fluororubber, covers the outer wall of the metal hose 101, resisting industrial oil stains and light chemical sprays from the external environment, preventing damage to the outer wall of the metal hose 101. This double-layer protection ensures the long-term use of the metal hose 101 in complex corrosive environments. In terms of structural strength, the steel wire mesh on the outer wall of the outer corrosion-resistant layer 102 is tightly woven to form a high-strength mesh structure. When the internal medium of the metal hose 101... When the pressure increases, the wire mesh generates circumferential tension, which evenly distributes the stress brought by the pressure, preventing the metal hose 101 from rupturing due to local overload. This enhances the structural stability of the hose under high-pressure conditions. The braided layer 104 on the outer surface of the wire mesh acts as an outer barrier, directly resisting damage when the hose is scratched by sharp objects or struck by stones, protecting the internal wire mesh and the main structure of the metal hose 101. Regarding sealing performance, when the first flange 106 and the second flange 107 are connected by bolts... During tightening, the pressure ring 1013 on one side of the second flange 107 will squeeze the sealing ring 1012 inserted into the annular groove 108 of the first flange 106. At the same time, the limiting block 109 and the limiting ring 1011 in the annular groove 108 limit the sealing ring 1012, ensuring that it will not fall out of the annular groove 108 during installation and compression and that its position is accurate. This allows the sealing ring 1012 to fit tightly against the inner wall of the annular groove 108 and the pressure ring 1013, effectively preventing the medium from leaking from the flange connection and ensuring the sealing performance of the conveying system.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A corrosion-resistant metal hose, comprising a metal hose (101), characterized in that: The outer wall of the metal hose (101) is fixedly connected to an outer corrosion-resistant layer (102), the outer wall of the outer corrosion-resistant layer (102) is fixedly connected to a wire mesh (103), the outer surface of the wire mesh (103) is fixedly connected to a braided layer (104), the inner wall of the metal hose (101) is fixedly connected to an inner corrosion-resistant layer (105), the two ends of the metal hose (101) are fixedly connected to a first flange (106), the first flange (106) is fixedly connected to a second flange (107) by bolts, a ring groove (108) is opened on one side of the first flange (106), the outer wall of the ring groove (108) is fixedly connected to four limiting blocks (109) in a circular array, the inner wall of the ring groove (108) is fixedly connected to a limiting ring (1011), a sealing ring (1012) is inserted into the ring groove (108), and a pressure ring (1013) is fixedly connected to one side of the second flange (107).

2. The corrosion-resistant metal hose according to claim 1, characterized in that: The outer corrosion-resistant layer (102) is made of fluororubber.

3. The corrosion-resistant metal hose according to claim 1, characterized in that: The wire mesh (103) is formed into a high-strength mesh structure through tight weaving.

4. The corrosion-resistant metal hose according to claim 1, characterized in that: The woven layer (104) serves as an outer barrier, which can resist mechanical damage such as scratches from sharp objects and impacts from stones.

5. The corrosion-resistant metal hose according to claim 1, characterized in that: The inner corrosion-resistant layer (105) is made of polytetrafluoroethylene.

6. The corrosion-resistant metal hose according to claim 1, characterized in that: The limiting block (109) and the limiting ring (1011) limit the sealing ring (1012).

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