Armored double-sealing cable lead-in device

Abstract

The utility model provides an armored double-sealing cable entry device, which comprises a joint body, a pressing joint and a middle joint, and is characterized in that during installation, the pressing joint and the joint body are tightened firstly, so that a conical first sealing ring is tightly attached to a conical surface in the tightening process, a cable is pressed more and more tightly, the sealing performance is good, and the explosion-proof standard is met; compared with the mode that the armor layer and the sealing ring are pressed at the same time in the prior art, sealing of the cable and pressing of the armor layer of the cable are completed in two steps, it is guaranteed that sealing of the cable and pressing of the armor layer of the cable are firm, and the sealing performance of the cable is improved. Therefore, the installation is not abnormal and is safer and more reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable assembly technical field, concretely relates to a kind of armored double-seal cable lead-in device. BACKGROUND

[0002] The armored layer of armored cable includes steel wire, steel band and copper wire weaving 3 kinds, the existing armored cable sealing joint as shown in Figure 5 First joint body 01, middle joint 02, sealing ring 03, armored ring 04 and armored body 05, middle joint 02 is threadedly connected with first joint body 01, the inner wall of first joint body 01 is equipped with the first step 06 that sealing ring 03 is opposite, armored body 05 is opposite with the side of sealing ring 03 away from first sleeve, and armored body 05 is equipped with armored ring 04, the inner wall of middle joint 02 is equipped with the second step 07 that the armored ring 04 is opposite. When assembling, the insulating layer of cable 08 is stripped to expose armored layer, then armored layer is wound between armored ring 04 and armored body 05, finally tightens middle joint 02, in the process of tightening, since armored layer and sealing ring are pressed simultaneously, sometimes cable sealing clamping and armored clamping situation are not clamped, that is, it is difficult to guarantee that cable sealing and armored clamping are simultaneously clamped, and there is a security risk. SUMMARY

[0003] Therefore, the technical problem to be solved by the utility model lies in overcoming the defect that it is difficult to guarantee that cable sealing and armored clamping are simultaneously clamped in the prior art, so as to provide an armored double-seal cable lead-in device for guaranteeing that cable sealing and armored clamping are tightly pressed.

[0004] Therefore, the utility model provides an armored double-seal cable lead-in device, which comprises a joint body, a tapered first sealing ring and a first compression gasket assembly are installed in the inside of the joint body, the tapered first sealing ring is opposite to the tapered surface, and the first compression gasket assembly is installed between the first sealing ring and the end of the first threaded segment.

[0005] Further comprising compression nut that is threadedly connected with the middle joint, the inner wall of the compression nut is equipped with second inner flange, the inside of the compression nut is installed with second sealing ring and second compression gasket assembly, and the second compression gasket assembly is arranged between the second sealing ring and the second inner flange.

[0006] The first compression gasket assembly and the second compression gasket assembly each comprise: a metal gasket comprising a gasket body and a first step provided at one end of an outer wall of the gasket body; and an L-shaped bushing having a bushing body sleeved on the outer wall of the gasket body and a flange provided at one end of the bushing body and abutting against the first step.

[0007] The other end of the outer wall of the gasket body is provided with a second step for abutting against the other end of the bushing body away from the flange.

[0008] The L-shaped bushing has a first chamfer provided at a through hole thereof.

[0009] An outer end surface of the second step is provided with a second chamfer.

[0010] A fluorine gasket is provided between the first inner flange and the armor ring.

[0011] The second sealing ring is a double-horn type.

[0012] A spacer sleeve is further sleeved on the second sealing ring, and a gap is provided between an outer wall of the spacer sleeve and an inner wall of the compression nut.

[0013] The technical scheme of the utility model has the following advantages:

[0014] 1. The armored double-sealing cable entry device provided by the utility model is tightened with the compression joint and the joint body during installation, so that the conical first sealing ring is tightly attached to the conical surface during the tightening process, the cable is pressed more tightly, the sealing and explosion-proof performance are good, the middle joint is then tightened with the compression joint, so as to press the armored layer of the cable between the armor ring and the armored body, compared with the mode of simultaneously pressing the armored layer and the sealing ring in the prior art, since the sealing of the cable and the pressing of the armored layer of the cable are completed in two steps, the sealing and armored pressing of the cable are ensured to be firm, the installation is not abnormal, and it is safer and more reliable.

[0015] 2. The armored double-seal cable lead-in device provided by the utility model, two compression gasket assemblies include metal gaskets and L-shaped bushings, the metal gasket includes a gasket main body, a first step provided at one end of the outer wall of the gasket main body, the bushing has a bushing main body provided on the outer wall of the gasket main body, and a flange provided at one end of the bushing main body and abutting against the first step, the compression gasket can ensure the hardness by using the metal gasket, on the other hand, the bushing main body can play a positioning role on the metal gasket, so that the outer wall of the metal gasket will not be in contact with the inner wall of the compression nut or the joint body, and the material of the L-shaped bushing is polytetrafluoroethylene, the friction between the L-shaped bushing of polytetrafluoroethylene and the first compression nut is small, and the torsion is small, so that more labor is saved when tightening the compression nut, and it is ensured that the sealing ring and the cable will not rotate together with the compression nut, thereby realizing one-time installation, saving labor, good sealing performance, and meeting the requirements of dustproof, waterproof and explosion-proof standards.

[0016] 3. The armored double-seal cable lead-in device provided by the utility model, the other end of the outer wall of the gasket main body is provided with a second step, the second step is used for abutting against the end of the bushing main body away from the flange, the L-shaped bushing is provided with a first chamfer, the metal gasket is provided with a second chamfer, and the material of the L-shaped bushing of polytetrafluoroethylene is elastic, so that the two are more convenient to assemble, in addition, due to the limitation of the first step and the second step, the L-shaped bushing will not be separated from the metal gasket, so that the metal gasket and the L-shaped bushing are assembled together when in use, and subsequent assembly is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0018] Figure 1 It is the first structure schematic drawing of the armored double-seal cable lead-in device (adopting cable wiring) of the utility model;

[0019] Figure 2 It is the second structure schematic drawing of the armored double-seal cable lead-in device (connected with flexible pipe);

[0020] Figure 3 It is the structure schematic drawing of the compression gasket assembly;

[0021] Figure 4 It is the split schematic drawing of the metal gasket and the L-shaped bushing;

[0022] Figure 5 It is the structure schematic drawing of one-time compression of the armored cable sealing joint in the prior art.

[0023] Explanation of reference signs: 01, first joint body; 02, middle joint; 03, sealing ring; 04, armored ring; 05, armored body; 06, first step; 07, second step; 08, cable;

[0024] 1, joint body; 2, conical surface; 3, compression joint; 4, first threaded section; 5, second threaded section; 6, first sealing ring; 7, first compression gasket assembly; 8, middle joint; 9, positioning portion; 10, armored body; 11, armored ring; 12, compression nut; 13, second inner flange; 14, second sealing ring; 15, second compression gasket assembly; 16, metal gasket; 17, gasket main body; 18, first step; 19, L-shaped bushing; 20, bushing main body; 21, flange; 22, second step; 23, first chamfer; 24, second chamfer; 25, Teflon gasket; 26, spacer sleeve; 31, first inner flange. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0029] Example

[0030] This embodiment provides an armored double-sealed cable entry device, such as... Figure 1 As shown, it includes a connector body 1, a clamping connector 3, a conical first sealing ring 6, a first clamping gasket assembly 7, a middle connector 8, and a clamping nut 12.

[0031] like Figure 1 As shown, a tapered surface 2 is provided in the middle of the inner wall of the connector body 1. A tapered first sealing ring 6 and a first compression gasket assembly 7 are installed inside the connector body 1. The tapered first sealing ring 6 abuts against the tapered surface 2, and the tapered first sealing ring 6 fits tightly against the tapered surface 2, and the cable is compressed tighter as it is pressed, which meets the explosion-proof requirements. The first compression gasket assembly 7 is installed between the first sealing ring 6 and the end of the first threaded section 4.

[0032] The compression joint 3 has a first threaded section 4 and a second threaded section 5 respectively disposed on both sides thereon, and the first threaded section 4 is threadedly connected to the joint body 1.

[0033] The intermediate connector 8 is connected to the second threaded section 5. The end of the intermediate connector 8 is provided with a first inner flange 31 for pressing the armor ring 11 and the armor body 10. The outer side of the armor body 10 is provided with a positioning part 9 that abuts against the inner wall of the intermediate connector 8.

[0034] The clamping nut 12 is threadedly connected to the intermediate connector 8. For example... Figure 1 and Figure 2 As shown, a second inner flange 13 is provided on the inner wall of the clamping nut 12. A second sealing ring 14, a second clamping gasket assembly 15, and a spacer 26 are installed inside the clamping nut 12. The second clamping gasket assembly 15 is positioned between the second sealing ring 14 and the second inner flange 13. When the clamping nut 12 is tightened, the second sealing ring 14 is compressed, thus achieving a double seal for the cable together with the conical first sealing ring 6. A PTFE gasket 25 is provided between the first inner flange 31 and the armor ring 11. The PTFE gasket 25 has low friction and low torque with the first inner flange 31 and the armor ring 11, making it easier and more secure when tightening the connector 8. The second sealing ring 14 is a double-flare type, with a clamping range that can evenly clamp from small to large. The spacer 26 is fitted onto the second sealing ring 14, with a gap between the outer wall of the spacer 26 and the inner wall of the clamping nut 12. The spacer 26 is made of polypropylene.

[0035] like Figure 3 and Figure 4As shown, the first compression gasket assembly 7 and the second compression gasket assembly 15 each include a metal gasket 16, including a gasket body 17, and a first step 18 provided at one end of an outer wall of the gasket body 17; an L-shaped bushing 19 having a bushing body 20 sleeved on the outer wall of the gasket body 17, and a flange 21 provided at one end of the bushing body 20 and abutting against the first step 18. The other end of the outer wall of the gasket body 17 is provided with a second step 22, which is used to abut against the other end of the bushing body 20 away from the flange 21. In the embodiment, the L-shaped bushing 19 has a first chamfer 23 provided at a through hole thereof, and the outer end surface of the second step 22 is provided with a second chamfer 24.

[0036] The armored double-seal cable lead-in device provided by the utility model, when installed, the compression joint 3 is first screwed with the joint body 1, so that the conical first sealing ring 6 is tightly attached to the conical surface 2 during the screwing process, the cable is pressed more tightly, the sealing and explosion-proof performance are good, then the middle joint 8 is threadedly connected with the compression joint 3, the compression nut 12 is screwed, so that the armored layer of the cable is compressed between the armored ring 11 and the armored body 10, compared with the mode of simultaneously compressing the armored layer and the sealing ring in the prior art, since the cable sealing and the compression of the armored layer of the cable are completed in two steps, the cable sealing and the armored compression are firm, so that the installation is normal and safe and reliable.

[0037] Obviously, the above embodiments are merely examples for clearly illustrating, rather than limiting the embodiments. For those skilled in the art, based on the above description, other different forms of changes or modifications can be made. Here, all the embodiments need not and cannot be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the utility model.

Claims

1. An armoured double-seal cable entry device characterised in that, The utility model relates to a kind of compression joint and compression nut, including: Joint body (1), the middle part of the inner wall of which is provided with taper surface (2), the inside of the joint body (1) is provided with tapered first sealing ring (6) and first compression gasket assembly (7), the tapered first sealing ring (6) is in abutment with the taper surface (2), and the first compression gasket assembly (7) is installed between the first sealing ring (6) and the end of first threaded section (4); Compression joint (3) has first threaded section (4) and second threaded section (5) separately arranged on both sides thereof, and the first threaded section (4) is threadedly connected with the joint body (1); Middle joint (8) is connected with the second threaded section (5), and the end of the middle joint (8) is provided with first inner flange (31) for compressing armored ring (11) and armored body (10).

2. The armored, double-sealed cable entry device of claim 1, wherein, It also includes compression nut (12) threadedly connected with the middle joint (8), and the inner wall of the compression nut (12) is provided with second inner flange (13), and the inside of the compression nut (12) is provided with second sealing ring (14) and second compression gasket assembly (15), and the second compression gasket assembly (15) is arranged between the second sealing ring (14) and the second inner flange (13).

3. The armored, double-sealed cable entry device of claim 2, wherein, The first compression gasket assembly (7) and the second compression gasket assembly (15) both include: Metal gasket (16) includes gasket body (17) and first step (18) arranged at one end of the outer wall of the gasket body (17); L-shaped bushing (19) has bushing body (20) sleeved on the outer wall of the gasket body (17), and flange (21) arranged at one end of the bushing body (20) and in abutment with the first step (18).

4. The armored, double-sealed cable entry device of claim 3, wherein, The other end of the outer wall of the gasket body (17) is provided with second step (22), and the second step (22) is used to abut against the end of the bushing body (20) away from the flange (21).

5. The armored, double-sealed cable entry device of claim 3, wherein, The L-shaped bushing (19) has first chamfer (23) arranged at the perforation thereof.

6. The armored, double-sealed cable entry device of claim 4, wherein, Second chamfer (24) is arranged on the outer end surface of the second step (22).

7. The armored, double-sealed cable entry device of claim 2, wherein, Fluorine gasket (25) is arranged between the first inner flange (31) and the armored ring (11).

8. The armored, double-sealed cable entry device of claim 2, wherein, The second sealing ring (14) is double-horn type.

9. The armored, double-sealed cable entry device of claim 2, wherein, It also includes spacer sleeve (26) sleeved on the second sealing ring (14), and gap is arranged between the outer wall of the spacer sleeve (26) and the inner wall of the compression nut (12).

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