Composite hose for conveying titanium tetrachloride liquid

Abstract

The embodiment of the utility model provides a composite hose for conveying titanium tetrachloride liquid. The composite hose comprises a corrosion-resistant inner layer, a middle layer and a wear-resistant outer layer which are sequentially and tightly arranged from inside to outside. Wherein the corrosion-resistant inner layer is a polytetrafluoroethylene inner layer, the corrosion-resistant inner layer is wrapped with the middle layer, and the middle layer comprises at least one braid layer; the wear-resistant outer layer is a polyurethane outer layer; the middle layer is compounded with the corrosion-resistant inner layer and the wear-resistant outer layer in a gapless mode, the thickness of the middle layer is smaller than that of the corrosion-resistant inner layer and that of the wear-resistant outer layer, and the thickness of the wear-resistant outer layer is smaller than or equal to that of the corrosion-resistant inner layer. The composite hose provided by the utility model is relatively high in high temperature resistance, corrosion resistance and high pressure resistance and relatively low in cost.

Description

Technical Field

[0001] The utility model relates to a composite hose technology, in particular to a composite hose for conveying titanium tetrachloride liquid. Background Art

[0002] Titanium tetrachloride is an important inorganic chemical raw material, widely used in the preparation of titanium metal and other titanium compounds. Because titanium tetrachloride is a highly toxic and corrosive liquid at room temperature, there is an urgent need for a specialized hose that can safely and efficiently transport titanium tetrachloride. Utility Model Content

[0003] The main purpose of the utility model is to provide a composite hose for conveying titanium tetrachloride liquid, so as to solve the problem of the existing lack of a special pipe body capable of conveying titanium tetrachloride liquid safely and efficiently.

[0004] According to an embodiment of the present utility model, a composite hose for conveying titanium tetrachloride liquid is proposed, which comprises: a corrosion-resistant inner layer, an intermediate layer and a wear-resistant outer layer which are tightly arranged in sequence from the inside to the outside; wherein: the corrosion-resistant inner layer is a polytetrafluoroethylene inner layer, the outside of the corrosion-resistant inner layer is wrapped with the intermediate layer, and the intermediate layer comprises at least one braided layer; the wear-resistant outer layer is a polyurethane outer layer; the intermediate layer is seamlessly composited with the corrosion-resistant inner layer and the wear-resistant outer layer, wherein the thickness of the intermediate layer is respectively less than the thickness of the corrosion-resistant inner layer and the wear-resistant outer layer, and the thickness of the wear-resistant outer layer is less than or equal to the thickness of the corrosion-resistant inner layer.

[0005] Wherein, the intermediate layer further includes: a first metal reinforcement rib layer arranged on the inner side of the braided layer and / or a second metal reinforcement rib layer arranged on the outer side of the braided layer.

[0006] Wherein, the middle layer is at least one polyester yarn braided layer.

[0007] The thickness of the polytetrafluoroethylene inner layer is between 1-2 mm, the thickness of the polyurethane outer layer is between 1-2 mm, and the thickness of the middle layer is between 0.4-0.6 mm.

[0008] Wherein, the inner diameter of the composite hose is between 15-20 mm.

[0009] According to the technical solution of the present invention, a composite hose including a corrosion-resistant inner layer, an intermediate layer and a wear-resistant outer layer is provided, wherein the polytetrafluoroethylene inner layer serves as the corrosion-resistant inner layer, the polyester yarn braided layer serves as the intermediate layer, and the polyurethane outer layer serves as the wear-resistant outer layer. The three layers are tightly compounded, and a relatively hard braided intermediate layer is provided between the two relatively soft rubber layers. This allows the composite hose to have strong high temperature resistance, corrosion resistance and high pressure resistance while effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0011] Figure 1 It is a cross-sectional view of a composite hose according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0012] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0013] Although the present invention may include various embodiments in different forms, for some preferred embodiments described in detail in the specification and shown in the drawings, it should be understood that the contents disclosed in the present invention should be regarded as schematic illustrations of the principles of the present invention, and these shown embodiments are not intended to limit the scope of protection of the present invention.

[0014] The technical solutions provided by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0015] When transporting liquids such as titanium tetrachloride, the pipe must possess excellent resistance to high temperatures, corrosion, and high pressure. When conveying high-temperature liquids, soft materials often expand. Existing hoses are prone to bulging, cracking, and deformation after prolonged transport of high-temperature liquids or oils. They also lack water and corrosion resistance.

[0016] In view of the above problems, according to an embodiment of the present invention, a composite hose for conveying titanium tetrachloride liquid is provided, which comprises: a corrosion-resistant inner layer 1, an intermediate layer 2 and a wear-resistant outer layer 3 that are tightly arranged without gaps.

[0017] Among them, the corrosion-resistant inner layer 1 can also be called a polytetrafluoroethylene inner layer and can be made of polytetrafluoroethylene material. Polytetrafluoroethylene (PTFE), also known as Teflon, has good corrosion resistance and high temperature resistance and can be used for a long time between -180 and 260°C. That is to say, the interior of the composite hose is made of polytetrafluoroethylene as the main material in contact with titanium tetrachloride liquid. In actual use, a rubber extruder can be used to manufacture the corrosion-resistant inner layer. The thickness of the polytetrafluoroethylene inner layer can be between 1-2 mm, for example, between 1-1.2 mm; and the inner diameter of the composite hose or tube body can be between 15-20 mm, for example, 19 mm. Of course, the thickness of the corrosion-resistant inner layer 2 and the size of the inner diameter of the composite hose are not limited to this. The thickness can be increased or composite hoses of various inner diameters can be provided according to actual use.

[0018] The outside of the corrosion-resistant inner layer 1 is wrapped with an intermediate layer 2. Since the texture of the polytetrafluoroethylene material is relatively soft, the main function of the intermediate layer 2 is to increase the pressure resistance and toughness of the tube body to protect the corrosion-resistant inner layer from breaking easily. In addition, the intermediate layer 2 also has a heat-insulating function to isolate heat from being transferred to the outside. Among them, the intermediate layer 2 can be a one-layer or multi-layer woven layer, such as two or three layers. A polyester woven layer made of polyester yarn as the main material can be used. The thickness of each woven layer can be between 0.4-0.6mm, for example, 0.5mm. In some embodiments of the present application, the intermediate layer 2 may also include one or two layers of metal reinforcement layers, which can be arranged on the inside of the woven layer or the outside of the woven layer, or metal reinforcement layers can be arranged on both the inside and outside of the woven layer. Specifically, there are three ways to set the metal reinforcement layer:

[0019] 1. A metal reinforcement layer is provided between the braided layer and the corrosion-resistant inner layer 1;

[0020] 2. A metal reinforcement layer is provided between the braided layer and the wear-resistant outer layer 3;

[0021] 3. Metal reinforcement layers are provided between the braided layer and the corrosion-resistant inner layer 1 and between the braided layer and the wear-resistant outer layer 3.

[0022] In actual use, steel wire can be used to make the metal reinforcement layer. Setting two layers of reinforcement has better compressive strength than one layer of reinforcement, but it will increase the cost.

[0023] The middle layer 2 is wrapped with a wear-resistant outer layer 3. The wear-resistant outer layer 3 can be made of polyurethane material, and can also be called a polyurethane outer layer. It protects the braided layer 2 and the corrosion-resistant inner layer 1. In actual use, the wear-resistant outer layer can be produced using a rubber extruder. The thickness of the wear-resistant outer layer 3 can be between 1 and 2 mm, for example, between 1 and 1.2 mm. Of course, the thickness of the wear-resistant outer layer 3 is not limited to this and can be increased according to actual use.

[0024] In the embodiment of the present application, the thickness of the intermediate layer 2 is less than that of the corrosion-resistant inner layer 1 and the wear-resistant outer layer 3, respectively, while the thickness of the wear-resistant outer layer 3 is less than or equal to that of the corrosion-resistant inner layer 1. Since this composite hose is primarily used to transport titanium tetrachloride liquid, the polytetrafluoroethylene inner layer that contacts the titanium tetrachloride liquid needs to have a certain thickness to ensure corrosion resistance. The outer polyurethane outer layer directly contacts the external environment and needs to have a certain thickness to ensure wear resistance. Therefore, the thickness of the polyurethane outer layer is slightly less than that of the polytetrafluoroethylene inner layer or is substantially the same. A relatively hard intermediate layer is provided between the two rubber layers, and its thickness can be less than that of the two layers before and after. This ensures a certain level of pressure resistance and ductility while effectively reducing costs.

[0025] Although the present disclosure has been described in detail with reference to specific embodiments of the present application, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the embodiments. Therefore, this application is intended to cover modifications and variations of the present application, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of the claims of the present application and their equivalents.

[0026] In addition, the features disclosed in the above description or claims or drawings, in their specific forms or according to the methods or processes for performing the disclosed functions or obtaining the disclosed results, can be used alone or in any combination of these features to implement the present application in their different forms. Specifically, one or more features of any embodiment described in this application can be combined with one or more features of any other embodiment described in this application.

[0027] Protection may also be sought for any features disclosed in any one or more of the publications cited in conjunction with the present application and / or incorporated by reference.

Claims

1. A composite hose for conveying titanium tetrachloride liquid, characterized in that: include: The corrosion-resistant inner layer, the middle layer and the wear-resistant outer layer are arranged closely from the inside to the outside; wherein: The corrosion-resistant inner layer is a polytetrafluoroethylene inner layer, the outside of the corrosion-resistant inner layer is wrapped with the intermediate layer, and the intermediate layer includes at least one woven layer; the wear-resistant outer layer is a polyurethane outer layer; the intermediate layer is seamlessly compounded with the corrosion-resistant inner layer and the wear-resistant outer layer, wherein the thickness of the intermediate layer is respectively less than the thickness of the corrosion-resistant inner layer and the wear-resistant outer layer, and the thickness of the wear-resistant outer layer is less than or equal to the thickness of the corrosion-resistant inner layer.

2. The composite hose for conveying titanium tetrachloride liquid according to claim 1, characterized in that: The intermediate layer further includes: a first metal reinforcement rib layer arranged on the inner side of the braided layer and / or a second metal reinforcement rib layer arranged on the outer side of the braided layer.

3. The composite hose for conveying titanium tetrachloride liquid according to claim 1 or 2, characterized in that: The middle layer is at least one polyester yarn braided layer.

4. The composite hose for conveying titanium tetrachloride liquid according to claim 1, characterized in that: The thickness of the polytetrafluoroethylene inner layer is between 1-2 mm, the thickness of the polyurethane outer layer is between 1-2 mm, and the thickness of each braided layer of the intermediate layer is between 0.4-0.6 mm.

5. The composite hose for conveying titanium tetrachloride liquid according to claim 1, characterized in that: The inner diameter of the composite hose is between 15 and 20 mm.

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