A new WYD-NKT series single seal armored explosion-proof device

Abstract

The utility model relates to cable joint technical field, disclose a new WYD - NKT series single sealing armoring explosion -proof device, including forcing nut, connecting body and pressure cabin, connecting body sets up between forcing nut and pressure cabin, the inside of forcing nut is provided with clamping ring, the inside of pressure cabin is provided with pressure mechanism. In the utility model, the fourth threaded part made of metal material is used to compress the first armored ring and the second armored ring, so that the compression strength is greater, and the armored cable inside the second armored ring is not easy to fall off. Moreover, the cooperation between the first armored ring and the second armored ring can be suitable for the armored layer limiting fixing of armored cables with different diameters, and the threaded connection is not affected. In addition, the pressure mechanism and the clamping ring in different cabin bodies can facilitate the installation of the armored layer of the armored cable.

Description

Technical Field

[0001] This utility model relates to the field of cable joint technology, and in particular to a novel WYD-NKT series single-seal armored explosion-proof device. Background Technology

[0002] A cable is an electrical or signal transmission device, typically composed of several or groups of conductors twisted together like a rope. Each group of conductors is insulated from each other and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated. During cable installation, cable joints are frequently used to lock and secure the cable ends, providing waterproofing, dustproofing, and vibration protection.

[0003] In the use of existing cable joints, there is only one clamping ring inside, and the clamping ring is a rubber part, which is not strong enough. Furthermore, it is difficult to tighten thicker and larger armored cables, which may cause the nut and the main body threads to not connect. Moreover, since the rubber clamping ring and the armor ring are in the same compartment, it is inconvenient to install armored cables. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a new type of WYD-NKT series single-seal armored explosion-proof device.

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

[0006] A novel WYD-NKT series single-seal armored explosion-proof device includes a clamping nut, a connecting body, and a compression chamber. The connecting body is disposed between the clamping nut and the compression chamber. A clamping ring is disposed inside the clamping nut, and a compression mechanism is disposed inside the compression chamber.

[0007] Preferably, the top of the connector is provided with a first threaded portion, and the tightening nut is threadedly connected to the first threaded portion through a third threaded portion provided on the inner wall. The outer wall of the clamping ring abuts against the inner wall of the connector and the inner wall of the tightening nut, respectively.

[0008] Preferably, the bottom of the connector is provided with a fourth threaded portion, and the compression chamber is threadedly connected to the fourth threaded portion through a fifth threaded portion provided on the inner wall.

[0009] Preferably, a first O-ring is fitted on the outer wall of the fourth threaded portion near the connector, and the top of the compression chamber abuts against the first O-ring.

[0010] Preferably, the bottom of the compression chamber is provided with a second threaded portion, and a second O-ring is fitted on the outer wall of the end of the second threaded portion near the compression chamber.

[0011] Preferably, the clamping mechanism includes a first armor ring and a second armor ring. The first armor ring is fitted onto the surface of the second armor ring. The top end of the first armor ring abuts against the bottom end of the fourth threaded portion, and the bottom end of the second armor ring abuts against the protrusion provided on the inner wall of the clamping chamber.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, a fourth threaded portion made of metal is used to press the first and second armor rings together, resulting in greater pressing force and making it less likely for the armored cable inside the second armor ring to fall off. Furthermore, the cooperation between the first and second armor rings allows for the limiting and fixing of the armor layer of armored cables of various thicknesses without the possibility of the threads not connecting properly. Moreover, the pressing mechanisms and clamping rings inside different compartments facilitate the installation of the armor layer of the armored cable. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a novel WYD-NKT series single-seal armored explosion-proof device proposed in this utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 for Figure 1 A structural sectional view.

[0017] In the diagram: 1. Tightening nut; 2. Connector; 3. First threaded part; 4. Compression chamber; 5. Second threaded part; 6. Clamping ring; 7. Third threaded part; 8. Fourth threaded part; 9. First O-ring seal; 10. Fifth threaded part; 11. Second O-ring seal; 12. First armored ring; 13. Second armored ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-3 A new type of WYD-NKT series single-seal armored explosion-proof device includes a clamping nut 1, a connecting body 2 and a compression chamber 4. The connecting body 2 is disposed between the clamping nut 1 and the compression chamber 4. The clamping nut 1 is provided with a clamping ring 6 inside, and the compression chamber 4 is provided with a compression mechanism inside.

[0020] As a technical optimization of this utility model, the top of the connecting body 2 is provided with a first threaded part 3, and the tightening nut 1 is threadedly connected to the first threaded part 3 through a third threaded part 7 provided on the inner wall. The outer wall of the clamping ring 6 abuts against the inner wall of the connecting body 2 and the inner wall of the tightening nut 1 respectively. When connecting and fixing the tightening nut 1 to the connector 2, the clamping ring 6 needs to be placed inside the first threaded part 3 first, so that the bottom end of the clamping ring 6 is inserted into the groove opened on the inner wall of the first threaded part 3. Then, the third threaded part 7 on the inner wall of the tightening nut 1 is threaded to the first threaded part 3 on the top of the connector 2. Since the clamping ring 6 is made of rubber, as the tightening nut 1 is slowly driven to rotate and tighten, the tightening nut 1 can apply pressure to the clamping ring 6, forcing the clamping ring 6 to deform inward until the inner wall of the clamping ring 6 deforms and it comes into close contact with the outer wall of the armored cable inserted inside, so as to achieve the effect of tightly clamping the outer wall of the armored cable and ensuring that the connector and the armored cable are not easy to fall off.

[0021] As a technical optimization of this utility model, the bottom of the connecting body 2 is provided with a fourth threaded portion 8, and the clamping chamber 4 is threadedly connected to the fourth threaded portion 8 through a fifth threaded portion 10 provided on the inner wall. The connecting body 2 is threadedly connected to the fifth threaded portion 10 on the inner wall of the clamping chamber 4 through the fourth threaded portion 8 at the bottom end, so as to facilitate quick installation and fixation of the connecting body 2 and the clamping chamber 4.

[0022] As a technical optimization of this utility model, a first O-ring 9 is fitted on the outer wall of the fourth threaded portion 8 near the connecting body 2, and the top of the compression chamber 4 abuts against the first O-ring 9. After the connecting body 2 and the compression chamber 4 are threadedly connected by the fourth threaded portion 8 and the fifth threaded portion 10, the top of the compression chamber 4 can compress the first O-ring 9, ensuring that the first O-ring 9 can seal the gap between the compression chamber 4 and the connecting body 2, thereby improving the sealing performance of the connection.

[0023] As a technical optimization of this utility model, the bottom end of the compression chamber 4 is provided with a second threaded portion 5, and a second O-ring seal 11 is fitted on the outer wall of the end of the second threaded portion 5 near the compression chamber 4. The second threaded portion 5 at the bottom end of the compression chamber 4 is threadedly connected to the designated installation position of the equipment, and can accurately position the subsequent installation of the connecting body 2 and the tightening nut 1; after the second threaded portion 5 of the compression chamber 4 is fully screwed into the designated installation position of the equipment, the second O-ring seal 11 will tightly abut against the installation position of the equipment, so as to seal the gap between the compression chamber 4 and the equipment and improve the sealing performance between the compression chamber 4 and the equipment.

[0024] As a technical optimization of this utility model, the clamping mechanism includes a first armored ring 12 and a second armored ring 13. The first armored ring 12 is fitted onto the surface of the second armored ring 13, with the top end of the first armored ring 12 abutting against the bottom end of the fourth threaded portion 8. The bottom end of the second armored ring 13 abuts against the protrusion on the inner wall of the clamping chamber 4. Before threading the connecting body 2 to the clamping chamber 4, the second armored ring 13 is placed on the protrusion on the inner wall of the clamping chamber 4. Then, the first armored ring 12 is fitted onto the outside of the second armored ring 13. Finally, the fourth threaded portion 8 at the bottom end of the connecting body 2 is threaded onto the fifth threaded portion 10 on the inner wall of the clamping chamber 4 until the bottom end of the fourth threaded portion 8 abuts against the top end of the first armored ring 12. This causes the bottom end of the first armored ring 12 to clamp the bottom end of the second armored ring 13, resulting in a greater clamping force and making it less likely for the armored cable inside the second armored ring 13 to fall off.

[0025] In this invention, the second threaded portion 5 at the bottom of the compression chamber 4 is threadedly connected to the designated installation position of the equipment. Then, using a special tool, the outer armor layer of the armored cable is carefully stripped. Next, the second armor ring 13 is accurately embedded into the armor layer of the armored cable. Afterward, the first armor ring 12 is fitted over the second armor ring 13. The prepared armored cable is then carefully passed through the pre-reserved channel of the equipment, ensuring the cable enters the equipment smoothly and unobstructed. During this process, the bottom end of the second armor ring 13 abuts against the protruding part inside the compression chamber 4. Finally, the fourth threaded portion 8 at the bottom of the connector 2 is connected to... The fifth threaded part 10 on the inner wall of the compression chamber 4 is threaded until the bottom end of the fourth threaded part 8 abuts against the top end of the first armor ring 12, thereby driving the bottom end of the first armor ring 12 to press against the bottom end of the second armor ring 13. The fourth threaded part 8, made of metal, presses against the first armor ring 12 and the second armor ring 13, resulting in a greater pressing force. The armored cable inside the second armor ring 13 is less likely to fall off. Moreover, the fit between the first armor ring 12 and the second armor ring 13 can be used to limit and fix the armor layer of armored cables of various thicknesses, and there will be no situation where the threads cannot be connected.

[0026] After this, the clamping ring 6 can be placed inside the first threaded part 3, so that the bottom end of the clamping ring 6 is inserted into the groove opened on the inner wall of the first threaded part 3. Then, the third threaded part 7 on the inner wall of the tightening nut 1 is threadedly connected to the first threaded part 3 on the top of the connector 2. Since the clamping ring 6 is made of rubber, as the tightening nut 1 is driven to rotate and tighten manually with the help of a special tool, the tightening nut 1 can apply pressure to the clamping ring 6, forcing the clamping ring 6 to deform inward until the inner wall of the clamping ring 6 deforms and it comes into close contact with the outer wall of the armored cable inserted inside, so as to achieve the effect of tightly clamping the outer wall of the armored cable and ensuring that the connector and the armored cable are not easy to fall off.

[0027] The clamping mechanism located inside the clamping chamber 4 and the clamping ring 6 inside the clamping nut 1 respectively are used to tightly abut against the armor layer of the armored cable, so that the clamping mechanism and clamping ring 6 inside the different chambers can facilitate the installation of the armor layer of the armored cable.

[0028] 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. A novel WYD-NKT series single-seal armored explosion-proof device, comprising a clamping nut (1), a connecting body (2), and a compression chamber (4), characterized in that, The connector (2) is disposed between the tightening nut (1) and the compression chamber (4). The tightening nut (1) is provided with a clamping ring (6), and the compression chamber (4) is provided with a compression mechanism.

2. The novel WYD-NKT series single-seal armored explosion-proof device according to claim 1, characterized in that, The top of the connector (2) is provided with a first threaded part (3), and the tightening nut (1) is threadedly connected to the first threaded part (3) through a third threaded part (7) provided on the inner wall. The outer wall of the clamping ring (6) abuts against the inner wall of the connector (2) and the inner wall of the tightening nut (1).

3. The novel WYD-NKT series single-seal armored explosion-proof device according to claim 1, characterized in that, The bottom of the connector (2) is provided with a fourth threaded part (8), and the compression chamber (4) is threadedly connected to the fourth threaded part (8) through a fifth threaded part (10) provided on the inner wall.

4. The novel WYD-NKT series single-seal armored explosion-proof device according to claim 3, characterized in that, The fourth threaded part (8) is fitted with a first O-ring seal (9) on the outer wall of the end near the connector (2), and the top of the compression chamber (4) abuts against the first O-ring seal (9).

5. A novel WYD-NKT series single-seal armored explosion-proof device according to claim 1, characterized in that, The bottom end of the compression chamber (4) is provided with a second threaded part (5), and a second O-ring (11) is fitted on the outer wall of the end of the second threaded part (5) near the compression chamber (4).

6. A novel WYD-NKT series single-seal armored explosion-proof device according to claim 1, characterized in that, The clamping mechanism includes a first armor ring (12) and a second armor ring (13). The first armor ring (12) is fitted onto the surface of the second armor ring (13). The top end of the first armor ring (12) abuts against the bottom end of the fourth threaded part (8), and the bottom end of the second armor ring (13) abuts against the protrusion provided on the inner wall of the clamping chamber (4).

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