Flame-retardant electrical conduit

Abstract

The utility model relates to the technical field of flame-retardant casing pipes, in particular to a flame-retardant electrical casing pipe, which comprises an outer casing body, a clamping strip, a connecting base, a supporting circular ring, a flame retardant filler, an inner casing, a limiting block, a protective cover and a branching strip. According to the invention, through the arrangement of the shock absorber, impact force can be buffered and damped, electric wires in the sleeve can be effectively protected, the electric wires are prevented from being crushed, meanwhile, the sleeve can be bent to a certain degree, convenience is brought to workers in use, and when the sleeve is used for a long distance and two sleeves need to be spliced, a limiting block is firstly inserted into a limiting groove, and the limiting block is inserted into the limiting groove; and then the clamping strips are clamped with the connecting rings, so that quick splicing of the two casing pipes is realized, the splicing mode is convenient, quick and stable, the reliability of casing pipe splicing is effectively improved, and long-distance use of the casing pipes is facilitated.

Description

Technical Field

[0001] The utility model relates to a flame-retardant electrical casing, belonging to the technical field of flame-retardant casings. Background Art

[0002] Wire sheath pipe is an insulating protective sheath pipe used for external protection of wires and cables. It can be divided into four categories according to material properties: single wire sheath pipe, composite wire sheath pipe, capacitive wire sheath pipe and stainless steel sheath pipe. Wire sheath pipe, in fact, also called insulating sheath pipe, is a new type of composite material pipe composited with insulating materials. It is an insulating sheath pipe with resin as the matrix and other reinforcing materials as the composite material. It is used for wearing wires and protecting wires, so it is called wire sheath pipe. It has the characteristics of strong pressure resistance, light weight, smooth inner wall, small friction coefficient, etc. It is easy to wear wires without damaging the wires. It is easier and more convenient to move and transport than metal steel pipes and cement pipes. It is simple to construct and install, which saves trouble and effort. After searching Chinese patent CN214280754U, a flame-retardant electrical sheath pipe is disclosed, including a waterproof layer, a first support layer, a second support layer, a support frame, a filler, a partition plate, and an outer sheath, which realizes the partition plate and the support frame in the shape of a trapezoidal wave ring in use. The entire electrical conduit plays a role in resisting pressure and reducing shock. At the same time, the trapezoidal wave ring connected to the first supporting layer and the second supporting layer respectively and the partition plates equidistantly arranged radially divide the interior of the electrical conduit into multiple independent spaces. When the electrical conduit encounters fire, when an outer sheath is burned and damaged, the flame retardant filler filled in the first supporting layer and the second supporting layer will suppress the flame and prevent it from spreading on the electrical conduit, thereby protecting the cables inside. This solves the problem that the current use of flame-retardant electrical conduits is mostly to apply fire-retardant paint on the outside of ordinary conduits, which has poor effect and is easy to peel off, and the conduit itself is easy to become fuel for the spread of flames. Although the above-mentioned prior art can prevent the wires from being crushed to a certain extent during use, due to the support frame arranged inside, the conduit is extremely difficult to bend. In actual use, it is sometimes necessary to bend the conduit to a certain extent. Moreover, when the existing conduit is used for a long distance, the splicing between the two conduits is more troublesome and the splicing stability is poor.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a flame-retardant electrical conduit in order to solve the above-mentioned problem, which can reliably support the wires inside the conduit, thereby preventing the wires from being damaged. At the same time, the conduit can be bent to a certain extent when it needs to be bent, thereby facilitating the use of the staff, and when splicing is required, it can be spliced ​​conveniently and quickly, and can be stably fixed.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a flame-retardant electrical conduit, comprising an outer shell, a connecting base and a connecting ring are respectively installed at both ends of the outer shell, a mounting ring is installed on one side wall of the connecting base, a clamping strip is respectively installed on one side wall of the mounting ring, and the connecting base is movably clamped with the connecting ring through the clamping strip, and supporting rings are respectively arranged on the inside of the outer shell, the inside of the supporting ring is a hollow cavity, and an intermediate shell is arranged on the inner wall of the supporting ring.

[0006] Furthermore, in order to improve the flame retardant effect of the sleeve and prevent the fire from further spreading, flame retardant fillers are respectively arranged on the side walls of the intermediate shell.

[0007] Furthermore, in order to facilitate heat dissipation of the wires inside the sleeve, support rings are respectively provided on the inner walls of the intermediate shell.

[0008] Furthermore, in order to dissipate the heat of the wires inside the sleeve, an inner shell is provided on the inner wall of the support ring, and air holes are respectively opened on the side walls of the inner shell.

[0009] Furthermore, in order to prevent entanglement when too many wires are threaded inside the sleeve, a dividing line is provided on the inner wall of the inner shell.

[0010] Furthermore, in order to easily distinguish the wires inside the dividing lines, color blocks are respectively provided on the dividing lines.

[0011] Furthermore, in order to prevent the two sleeves from rotating relative to each other after being spliced ​​together, a limiting block is provided on one side wall of the connecting ring, a limiting groove is provided on the connecting base, and the limiting block is movably engaged with the limiting groove.

[0012] Furthermore, in order to prevent impurities from entering through the gap formed by the intermediate shell and the outer shell and the gap formed by the intermediate shell and the inner shell, protective covers are respectively installed at both ends of the outer shell.

[0013] The technical effects and advantages of the utility model are as follows: by passing the electric wires into the branch line, when the sleeve receives impact, the impact force can be buffered and shock-absorbing through the hollow cavity inside the supporting ring, thereby effectively improving the compression and shock-absorbing capacity of the sleeve, and then effectively protecting the electric wires inside the sleeve to prevent the electric wires from being crushed. At the same time, it can also be bent to a certain extent, which is convenient for the use of the staff. The sleeve is also provided with a flame retardant filler. When the outer shell is burned, the flame can be suppressed and flame-retarded by the flame retardant filler, which is helpful to prevent the spread of the fire. When the sleeve is used for a long distance and two sleeves need to be spliced, the limit block is first inserted into the limit groove, and then the clamping strip is clamped with the connecting ring to realize the rapid splicing of the two sleeves. This splicing method is not only convenient and fast but also stable, and it also effectively improves the reliability of the sleeve splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connecting ring structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the limit block structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0018] In the figure: 1. outer shell; 2. connecting base; 3. connecting ring; 4. supporting ring; 5. intermediate shell; 6. supporting sleeve ring; 7. dividing line; 8. color block; 9. air vent; 10. protective cover; 11. limit block; 12. limit groove; 13. flame retardant filler; 14. mounting ring; 15. snap-in strip; 16. inner shell. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4As shown, a flame-retardant electrical conduit comprises an outer shell 1, and a connecting base 2 and a connecting ring 3 are respectively installed at both ends of the outer shell 1. The outer shell 1 is made of flame-retardant material, which can prevent the conduit from being quickly ignited when encountering an open flame. A mounting ring 14 is installed on one side wall of the connecting base 2, and a clamping strip 15 is respectively installed on one side wall of the mounting ring 14. The connecting base 2 is movably clamped with the connecting ring 3 through the clamping strip 15, and the two conduits can be spliced ​​together by clamping with the connecting ring 3 through the clamping strip 15, so that the conduits can be used over a long distance. A supporting ring 4 is respectively arranged on the inside of the outer shell 1. The inside of the supporting ring 4 is a hollow cavity. The hollow cavity inside the supporting ring 4 is conducive to providing a certain shock-absorbing ability when the sleeve is hit. An intermediate shell 5 is arranged on the inner wall of the supporting ring 4. The intermediate shell 5 is effectively supported and shock-absorbing by the supporting ring 4, which is conducive to improving the compression resistance and shock-absorbing ability of the sleeve. At the same time, the supporting ring 4 will not affect the bending of the sleeve, so that the sleeve can be bent when it needs to be bent to a certain extent.

[0021] As a technical optimization solution of the utility model, flame retardant fillers 13 are respectively arranged on the side walls of the intermediate shell 5. When the outer shell 1 burns out, the flame can be suppressed by the flame retardant fillers 13, which is beneficial to avoid the expansion of the fire as much as possible.

[0022] As a technical optimization solution of the utility model, support rings 6 are respectively provided on the inner walls of the intermediate shell 5, an inner shell 16 is provided on the inner wall of the support rings 6, and air holes 9 are respectively opened on the side walls of the inner shell 16. The support rings 6 can provide auxiliary support to the inner shell 16 and form a gap between the inner shell 16 and the intermediate shell 5, so that the heat generated by the wires inside the inner shell 16 can be dissipated through the air holes 9 to prevent the wires from overheating and spontaneous combustion.

[0023] As a technical optimization solution of the utility model, a dividing line 7 is provided on the inner wall of the inner shell 16, and color blocks 8 are respectively provided on the dividing line 7. The dividing line 7 is made of polyethylene, which is relatively soft and will not affect the bending of the sleeve. The wires can be inserted into the sleeve respectively through the dividing line 7, which is helpful to prevent the wires from being entangled too much inside the sleeve. The position of the wires inside the dividing line 7 can be identified through the color block 8.

[0024] As a technical optimization solution of the utility model, a limiting block 11 is respectively arranged on one side wall of the connecting ring 3, and a limiting groove 12 is respectively opened on the connecting base 2, and the limiting block 11 is movably engaged with the limiting groove 12. By means of the limiting groove 12 and the limiting block 11, and by means of the limiting groove 12 and the limiting block 11, the two sleeves can be effectively prevented from rotating after the splicing is completed, and the spaces formed by the dividing lines 7 inside the two sleeves can also be made to correspond one to one.

[0025] As a technical optimization solution of the present invention, protective covers 10 are respectively installed at both ends of the outer shell 1. The protective covers 10 are helpful in preventing impurities from entering the gaps formed between the intermediate shell 5 and the outer shell 1 and between the intermediate shell 5 and the inner shell 16.

[0026] When the utility model is in use, the wire is inserted into the inside of the branch line 7. When the sleeve receives an impact, the impact force can be buffered and shock-absorbing through the hollow cavity inside the supporting ring 4, thereby effectively improving the compression and shock-absorbing ability of the sleeve, and then effectively protecting the wires inside the sleeve to prevent the wires from being crushed. At the same time, the sleeve can also be bent to a certain extent, which is convenient for workers to use. A flame retardant filler 13 is also provided inside the sleeve. When the outer shell 1 is burned, the flame can also be suppressed and flame-retarded through the flame retardant filler 13, which is helpful to prevent the spread of the fire. When the sleeve is used for a long distance and two sleeves need to be spliced, the limit block 11 is first inserted into the limit groove 12, and then the clamping strip 15 is clamped with the connecting ring 3, so as to realize the rapid splicing of the two sleeves. This splicing method is not only convenient and fast but also stable, thereby effectively improving the reliability of the sleeve splicing and facilitating the use of the sleeve for a long distance.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flame-retardant electrical conduit, comprising an outer shell (1), characterized in that: A connecting base (2) and a connecting ring (3) are respectively installed at both ends of the outer shell (1); a mounting ring (14) is installed on one side wall of the connecting base (2); a clamping strip (15) is respectively installed on one side wall of the mounting ring (14); and the connecting base (2) is movably clamped with the connecting ring (3) via the clamping strip (15); and a supporting ring (4) is respectively arranged inside the outer shell (1); the interior of the supporting ring (4) is a hollow cavity; and an intermediate shell (5) is arranged on the inner wall of the supporting ring (4).

2. The flame-retardant electrical conduit according to claim 1, characterized in that: Flame retardant fillers (13) are respectively arranged on the side walls of the intermediate shell (5).

3. The flame-retardant electrical conduit according to claim 1, characterized in that: Support collars (6) are respectively arranged on the inner walls of the intermediate shells (5).

4. The flame-retardant electrical conduit according to claim 3, characterized in that: An inner shell (16) is arranged on the inner wall of the supporting sleeve ring (6), and air holes (9) are respectively opened on the side walls of the inner shell (16).

5. The flame-retardant electrical conduit according to claim 4, characterized in that: A dividing line (7) is provided on the inner wall of the inner shell (16).

6. The flame-retardant electrical conduit according to claim 5, characterized in that: Color blocks (8) are respectively arranged on the dividing lines (7).

7. The flame-retardant electrical conduit according to claim 1, characterized in that: A limiting block (11) is respectively arranged on one side wall of the connecting ring (3), a limiting groove (12) is respectively provided on the connecting base (2), and the limiting block (11) is movably engaged with the limiting groove (12).

8. The flame-retardant electrical conduit according to claim 1, characterized in that: Protective covers (10) are respectively installed at both ends of the outer shell (1).

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