Metal sheath connecting pipe

Abstract

The utility model provides a metal sheath connecting pipe, and belongs to the field of high-pressure pipe fitting manufacturing. The flexible pipe joint comprises a flexible pipe, two metal sleeves and two flanges, the two ends of the hose are connected with the two flanges through the metal sleeves respectively. A metal net sleeve is sleeved outside the hose; the hose is arranged in the metal sleeve in a sleeving manner; a plurality of annular bulges which are uniformly spaced are arranged in the metal sleeve; the outer side of the hose is bonded with the annular protrusions so as to be connected with the inner wall of the metal sleeve. Due to the fact that the annular protrusions are arranged, the contact area between the hose and the metal sleeve is increased, bonding is firmer, leakage at the joint of the hose after long-term use is avoided, and sealing performance and safety are better.

Description

Technical Field

[0001] The utility model relates to pipe fitting manufacturing technology, in particular to a metal sheath connecting pipe, belonging to the technical field of high-pressure pipe fitting manufacturing. Background Art

[0002] Metal sheathed connecting pipes are widely used in many industries such as military industry, petroleum, chemical industry, electric power, metallurgy, printing, papermaking, domestic heating, construction, etc. They are suitable for pipeline systems that transport fluid media with one end fixed and the other end needing to be movable or both ends need to be movable.

[0003] Metal sheath connections are generally composed of rubber tubes, stainless steel mesh sleeves and joints. The joints are generally threaded joints and flange joints, which are fixed and movable. However, whether it is a threaded joint or a flange joint, the metal hose will leak at the connection between the rubber tube and the joint due to rubber aging after long-term use.

[0004] Therefore, there is an urgent need for a metal sheath connecting pipe that can effectively avoid leakage. Summary of the Invention

[0005] The utility model provides a new metal sheath connecting pipe, which can enhance the connection strength of the hose by arranging a plurality of annular protrusions in the metal sleeve, so as to solve the technical problem of easy leakage at the hose joint in the prior art.

[0006] The metal sheath connecting pipe of the embodiment of the utility model comprises: a hose, two metal sleeves and two flanges; the two ends of the hose are connected to the two flanges through the metal sleeves respectively;

[0007] The outer sleeve of the hose is provided with a metal mesh sleeve; the hose is sleeved in the metal sleeve; the metal sleeve is provided with a plurality of evenly spaced annular protrusions; the outer side of the hose is bonded to the plurality of annular protrusions to be connected to the inner wall of the metal sleeve.

[0008] The metal sheathed connecting pipe as described above, wherein the edge of the metal mesh sleeve is sleeved in the metal sleeve; the hose protrudes from the edge of the metal mesh sleeve, and the hose is bonded to the metal sleeve so that the metal mesh sleeve is pressed tightly against the inner wall of the metal sleeve.

[0009] As described above, the metal sheathed connecting pipe, wherein the flange is provided with a threaded joint, and the metal sleeve is provided with an internal thread; the threaded joint is sleeved in the metal sleeve and connected to the internal thread.

[0010] As described above, the metal sheathed connecting pipe, wherein a limit stop ring is provided in the metal sleeve, one side of the limit stop ring contacts the hose, and the other side contacts the threaded joint.

[0011] The metal sheath connecting pipe as described above, wherein the limit stop ring is a tubular structure; the two ends of the limit stop ring have two interconnected interfaces of different sizes; the two interfaces are respectively connected to the threaded joint and the hose.

[0012] The metal sheathed connecting pipe as described above, wherein the metal mesh sleeve is a metal braided mesh.

[0013] The metal sheathed connecting pipe as described above, wherein the hose is a rubber hose or a polytetrafluoroethylene hose.

[0014] The metal sheathed connecting pipe as described above, wherein the flange is provided with a receiving groove, and a sealing ring is installed in the receiving groove; the cross-sectional shape of the sealing ring is E-shaped.

[0015] In the embodiment of the present invention, a plurality of annular protrusions are provided to increase the contact area between the hose and the metal sleeve, thereby making the bonding stronger, thereby avoiding leakage at the hose connection after long-term use, and improving the sealing and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side structural diagram of a metal sheathed connecting pipe according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Partial cross-sectional structure diagram. DETAILED DESCRIPTION

[0018] The metal sheath connecting pipe described in the present invention can be made of the following materials and components, but is not limited to the following materials and components, such as: a hose, a steel wire braided tube, a flange, a sleeve, a sealing ring, etc.

[0019] like Figure 1 Shown is a side structural diagram of the metal sheath connecting pipe of the embodiment of the present utility model; Figure 2 .

[0020] The metal sheathed connecting pipe of this embodiment includes: a hose 1, two metal sleeves 2 and two flanges 3; the two ends of the hose 1 are respectively connected to the two flanges 3 through the metal sleeves 2; the flange 3 is a flange plate used to connect to an external high-pressure interface.

[0021] The hose 1 is provided with a metal mesh sleeve 10; the hose 1 is sleeved in the metal sleeve 2; a plurality of evenly spaced annular protrusions 20 are provided in the metal sleeve 2; the outer side of the hose 1 is bonded to the plurality of annular protrusions 20 to be connected to the inner wall of the metal sleeve 1.

[0022] In the embodiment of the present invention, a plurality of annular protrusions are provided to increase the contact area and friction between the hose and the metal sleeve, thereby making the bonding stronger, thereby avoiding leakage at the hose connection after long-term use, and improving the sealing and safety.

[0023] In this embodiment, the edge of the metal mesh sleeve 10 is sleeved in the metal sleeve 2; the hose 1 protrudes from the edge of the metal mesh sleeve 10, and the hose 1 is bonded to the metal sleeve 2 so that the metal mesh sleeve 10 is pressed against the inner wall of the metal sleeve 2.

[0024] During actual use, the metal mesh sleeve 10 is sleeved on the inner side of the metal sleeve 2, thereby protecting the hose 1 from damage at the connection between the two, and can effectively protect the hose 1 even if it is bent multiple times.

[0025] Typically, the flange 3 is provided with a threaded joint 30, and the metal sleeve 2 is provided with an internal thread. The threaded joint 30 is sleeved within the metal sleeve 2 and connected to the internal thread. In other words, the metal sleeve 2 and flange 3 are connected by a threaded connection, thereby ensuring pressure bearing capacity and sealing.

[0026] The metal sheathed connecting pipe of this embodiment further comprises a limit stop ring 21 disposed within the metal sleeve 2. One side of the limit stop ring 21 contacts the hose 1, and the other side contacts the threaded connector 30. The limit stop ring 21 ensures that the metal sleeve 2 is securely connected to the hose 1 or flange 3, while shielding the end of the threaded connector 30, thereby enhancing sealing. During actual use, the hose 1 can be quickly and accurately inserted into the predetermined position within the metal sleeve 2, thereby facilitating rapid production and installation.

[0027] Preferably, the stop ring 21 is tubular; its ends have two interconnected ports of different sizes, each connected to the threaded connector 30 and the hose 1. Generally, the smaller port is connected to the threaded connector 30, while the larger port corresponds to the hose. This change in diameter reduces the fluid flow rate within the hose 1, thereby reducing the impact of pressure changes on the hose.

[0028] In the metal sheathed connecting pipe of this embodiment, the metal mesh sleeve 10 is a metal braided mesh, and the hose 1 is a rubber hose or a polytetrafluoroethylene hose.

[0029] In the metal sheathed connecting pipe of this embodiment, the flange 3 is provided with a receiving groove 31 , and a sealing ring 4 is installed in the receiving groove 31 ; the cross-section of the sealing ring 4 is E-shaped.

[0030] The hose in this embodiment has strong flexibility, scalability, bending and vibration resistance, and the metal mesh sleeve provides enhanced protection, giving it a higher pressure-bearing capacity. The hose in this embodiment is resistant to bending, tensile strength, and lateral pressure, and is soft, smooth, and easy to install and position.

[0031] In addition, the metal sheathed connecting pipe of the present invention has low production cost, is small and exquisite, has a compact structural design, stable finished product quality, is easy to install, and is suitable for connecting various high-pressure fluid pipelines.

[0032] The serial numbers of the above-mentioned embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of some deformations plus the necessary general technology superposition; of course, they can also be implemented by simplifying some important technical features. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art is: the overall structure and connection method, and the structure described in each embodiment of the present invention.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal sheathed connecting pipe, characterized in that: include: A hose, two metal sleeves and two flanges; both ends of the hose are connected to the two flanges through the metal sleeves respectively; The outer sleeve of the hose is provided with a metal mesh sleeve; the hose is sleeved in the metal sleeve; the metal sleeve is provided with a plurality of evenly spaced annular protrusions; the outer side of the hose is bonded to the plurality of annular protrusions to be connected to the inner wall of the metal sleeve.

2. The metal sheath connecting pipe according to claim 1, characterized in that: The edge of the metal mesh sleeve is sleeved in the metal sleeve; the hose protrudes from the edge of the metal mesh sleeve, and the hose is bonded to the metal sleeve so that the metal mesh sleeve is pressed tightly against the inner wall of the metal sleeve.

3. The metal sheath connecting pipe according to claim 2, characterized in that: The flange is provided with a threaded joint, and the metal sleeve is provided with an internal thread; the threaded joint is sleeved in the metal sleeve and connected with the internal thread.

4. The metal sheath connecting pipe according to claim 3, characterized in that: A limit stop ring is arranged in the metal sleeve, one side of the limit stop ring contacts the hose, and the other side contacts the threaded joint.

5. The metal sheath connecting pipe according to claim 4, characterized in that: The limit stop ring is a tubular structure; the two ends of the limit stop ring are provided with two interfaces which are interconnected and of different sizes; the two interfaces are respectively connected to the threaded joint and the hose.

6. The metal sheathed connecting pipe according to any one of claims 1 to 4, characterized in that: The metal mesh sleeve is a metal braided mesh.

7. The metal sheathed connecting pipe according to any one of claims 1 to 4, characterized in that: The hose is a rubber hose or a polytetrafluoroethylene hose.

8. The metal sheathed connecting pipe according to any one of claims 1 to 4, characterized in that: The flange is provided with a receiving groove, in which a sealing ring is installed; the cross-section of the sealing ring is E-shaped.

Images