An explosion-proof flexible tube

Abstract

This utility model discloses an explosion-proof flexible tube, including a stainless steel braided mesh sheath, and further comprising: an inner tube, movably fitted inside the stainless steel braided mesh sheath; a connector, disposed at both ends of the stainless steel braided mesh sheath and the inner tube; an inner ring, fixedly connected inside the connector and located between the stainless steel braided mesh sheath and the inner tube; and multiple sets of pressure plates, arranged around the central axis of the connector, each set of pressure plates pressing against the stainless steel braided mesh sheath. In this utility model, the stainless steel braided mesh sheath is a complete, closed structure that wraps around the inner tube, providing an additional protective layer, solving the cracking problem existing in traditional open designs, and enhancing the tensile strength and compressive strength of the entire flexible tube.

Description

Technical Field

[0001] This utility model relates to the field of flexible tube technology, and in particular to an explosion-proof flexible tube. Background Technology

[0002] Explosion-proof flexible conduit is mainly used for steel pipe wiring and cable electrical connections. It is often used in dangerous areas where there are flammable gases in the air to connect explosion-proof products with various electrical appliances.

[0003] A Chinese utility model patent with publication number CN219801756U discloses an "explosion-proof flexible connecting pipe, including an explosion-proof flexible inner pipe, characterized in that the outer surface of the explosion-proof flexible inner pipe is fixedly connected with a linear array of raised rings, and the outer surface of the explosion-proof flexible inner pipe is fitted with a stainless steel mesh braided sheath, the stainless steel mesh braided sheath being formed by rolling a plate, a first connecting plate being fixedly connected to one side of the stainless steel mesh braided sheath, and a second connecting plate being fixedly connected to the other side. A positioning groove is provided on the second connecting plate, and a connecting block is fixedly connected to the bottom of the first connecting plate, the bottom of the connecting block penetrating the positioning groove and extending to the outside of the second connecting plate, and a trapezoidal limiting block made of soft rubber is fixedly connected to the bottom of the connecting block, with the two sides of the trapezoidal limiting block being inclined." However, this axially open design may cause the opening to crack during the bending and use of the flexible pipe, affecting its protective performance and service life. Utility Model Content

[0004] The purpose of this utility model is to provide an explosion-proof flexible tube in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An explosion-proof flexible conduit includes a stainless steel braided mesh sheath and further comprises:

[0007] The inner tube is movably fitted inside a stainless steel woven mesh sheath.

[0008] The connectors are installed at both ends of the stainless steel braided mesh sheath and the inner tube.

[0009] The inner ring is fixedly connected inside the connector and is located between the stainless steel braided mesh sheath and the inner tube;

[0010] Multiple pressure plates are arranged around the central axis of the connector, and each pressure plate is pressed onto the stainless steel woven mesh sheath.

[0011] As a further description of the above technical solution:

[0012] It also includes screws, which are screwed onto the connector head and connected to the pressure plate at the tail.

[0013] As a further description of the above technical solution:

[0014] Also includes:

[0015] The screw tail is rotatably connected to the pressure plate;

[0016] T-shaped guide rods are placed on both sides of the screw. After passing through the connector, the guide rods are fixedly connected to the pressure plate.

[0017] As a further description of the above technical solution:

[0018] The connector head has a groove for accommodating screws and guide rod heads.

[0019] As a further description of the above technical solution:

[0020] Also includes:

[0021] External thread, fixedly connected to one end of the inner tube;

[0022] The inner thread is a connector that is fixedly connected to the other end of the inner tube.

[0023] As a further description of the above technical solution:

[0024] It also includes a sealing ring, which is extruded between the inner tube and the connector.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] 1. In this utility model, the stainless steel woven mesh sheath is a complete, closed structure that wraps around the inner tube, providing an additional protective layer, solving the crack problem existing in the traditional open design, and enhancing the tensile strength and compressive strength of the entire flexible tube.

[0027] 2. In this utility model, a clamping mechanism is formed by a pressure plate, screws, and T-shaped guide rods to firmly fix the stainless steel woven mesh sheath to the connector head, preventing it from loosening and falling off. Furthermore, by removing the pressure plate from the surface of the stainless steel woven mesh sheath, the connector head can be removed from both ends of the flexible tube, and the inner tube can be pulled out from the stainless steel woven mesh sheath, which facilitates the replacement or maintenance of the sheath or the inner tube. Attached Figure Description

[0028] Figure 1 A three-dimensional structural schematic diagram of an explosion-proof flexible tube according to an embodiment of the present utility model is shown;

[0029] Figure 2 A top view schematic diagram of an explosion-proof flexible tube according to an embodiment of the present utility model is shown;

[0030] Figure 3 It shows Figure 2 Schematic sectional view along the middle AA direction;

[0031] Figure 4 It shows Figure 3 Enlarged diagram of point A in the middle.

[0032] Legend:

[0033] 1. Stainless steel braided mesh sheath; 2. Connector; 201. Groove; 3. External thread; 4. Internal thread; 5. Inner tube; 6. Sealing ring; 7. Inner ring; 8. Pressure plate; 9. Screw; 10. Guide rod. Detailed Implementation

[0034] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-4 This utility model provides a technical solution: an explosion-proof flexible conduit, comprising a stainless steel braided mesh sheath 1 as an outer protective layer, possessing good tensile and bending resistance, and also having a certain explosion-proof capability; an inner tube 5 movably sleeved within the stainless steel braided mesh sheath 1, the inner tube 5 typically being a rubber tube or corrugated pipe, used for cable installation and providing a sealed channel; connectors 2 are located at both ends of the stainless steel braided mesh sheath 1 and the inner tube 5, with an outer thread 3 fixedly connected to the connector 2 at one end of the inner tube 5, and an inner thread 4 fixedly connected to the connector 2 at the other end of the inner tube 5, used for threaded connection with equipment or other pipelines; a sealing ring 6 is extruded between the inner tube 5 and the connector 2 to ensure airtightness and explosion-proof performance at the interface. The stainless steel braided mesh sheath 1 is a complete, closed structure that wraps around the inner tube 5, providing an additional protective layer, solving the cracking problem present in traditional open designs, and enhancing the tensile strength and compressive strength of the entire flexible conduit.

[0036] Specifically, such as Figure 1 and Figure 4As shown, the inner ring 7 is fixedly connected inside the connector 2 and located between the stainless steel braided mesh sleeve 1 and the inner tube 5. Multiple sets of pressure plates 8 are arranged around the central axis of the connector 2. Each set of pressure plates 8 is pressed onto the stainless steel braided mesh sleeve 1. The screw 9 is screwed onto the connector 2. The tail of the screw 9 is rotatably connected to the pressure plate 8. Rotating the screw 9 can push the pressure plate 8 to move towards the center. The T-shaped guide rod 10 is arranged on both sides of the screw 9. After passing through the connector 2, the guide rod 10 is fixedly connected to the pressure plate 8, which plays a guiding and limiting role, ensuring that the pressure plate 8 moves smoothly under force and will not deviate or tilt. The connector 2 has a groove 201 to accommodate the head of the screw 9 and the head of the guide rod 10, which makes the overall structure more compact, beautiful and easy to operate.

[0037] Working principle: When in use, first, put the stainless steel woven mesh sheath 1 on the outside of the inner tube 5, insert both ends of the inner tube 5 into the connector 2, and place the sealing ring 6 between the connector 2 and the inner tube 5 to ensure the seal. Tighten the screw 9, and drive the pressure plate 8 to move towards the center, thereby pressing the stainless steel woven mesh sheath 1 to complete the fixation.

[0038] Next, loosen screw 9 and move pressure plate 8 outward to remove it from the surface of stainless steel braided mesh sheath 1. Take out connector 2 from both ends of flexible tube. Inner tube 5 can be pulled out from stainless steel braided mesh sheath 1 for easy replacement or maintenance of sheath or inner tube 5.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof flexible conduit, comprising a stainless steel braided mesh sheath (1), characterized in that, Also includes: The inner tube (5) is movably fitted inside the stainless steel woven mesh sheath (1); Connector (2) is installed at both ends of the stainless steel braided mesh sheath (1) and the inner tube (5); The inner ring (7) is fixedly connected inside the connector (2) and is located between the stainless steel braided mesh sheath (1) and the inner tube (5); Multiple sets of pressure plates (8) are arranged around the central axis of the connector (2), and each set of pressure plates (8) is pressed onto the stainless steel woven mesh sheath (1).

2. The explosion-proof flexible tube according to claim 1, characterized in that, It also includes screws (9), which are connected to the connector (2) by thread engagement, and the tail of the screws (9) is connected to the pressure plate (8).

3. The explosion-proof flexible tube according to claim 2, characterized in that, Also includes: The tail of the screw (9) is rotatably connected to the pressure plate (8); T-shaped guide rods (10) are arranged on both sides of screws (9). After passing through connectors (2), the guide rods (10) are fixedly connected to pressure plates (8).

4. The explosion-proof flexible tube according to claim 3, characterized in that, The connector (2) has a groove (201) for accommodating the head of the screw (9) and the guide rod (10).

5. The explosion-proof flexible tube according to claim 4, characterized in that, Also includes: The outer thread (3) is fixedly connected to the connector (2) at one end of the inner tube (5); The inner thread (4) is fixedly connected to the connector (2) at the other end of the inner tube (5).

6. The explosion-proof flexible tube according to claim 5, characterized in that, It also includes a sealing ring (6), which is extruded between the inner tube (5) and the connector (2).

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