CN210608368U

CN210608368U - Novel PVC wire casing with soften protective layer

Info

Publication number: CN210608368U
Application number: CN201921501144.XU
Authority: CN
Inventors: 许明安
Original assignee: Guangzhou Bohong Material Technology Co Ltd
Current assignee: Guangzhou Bohong Material Technology Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-22
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a novel PVC wire casing with soften protective layer, including PVC sleeve pipe, flexible docking flange and electric wire protective layer, PVC sleeve pipe middle part is provided with flexible docking flange, flexible docking flange butt joint department is provided with first docking ring and second docking ring, first docking ring with the last lower extreme of second docking ring butt joint department is all through screwing up spiral fixed connection, the flexible docking flange outside is provided with the shell, the shell with first docking ring with the non-butt joint face fixed connection of second docking ring, one side that first docking ring is close to the inner ring is provided with ring groove, the second docking ring is close to ring groove department is provided with the ring seal tooth. The utility model provides a pair of novel PVC wire casing with soften protective layer can protect the internal electric wire through being provided with the softening protective layer in the outside of electric wire, avoids the internal electric wire because of the wearing and tearing that the inside displacement caused in transportation and installation.

Description

Novel PVC wire casing with soften protective layer

Technical Field

The utility model relates to an electric wire sleeve field particularly, relates to a novel PVC electric wire sleeve with soften protective layer.

Background

At present, the cable sleeve for engineering is prepared by mixing polyvinyl chloride resin serving as a main material, heavy calcium carbonate serving as a filler, chlorinated polyethylene, paraffin and other small materials, and has the characteristics of corrosion resistance, high temperature resistance, flame retardance, insulation, wear resistance, light weight, no pollution and the like. But the defects are that the compressive strength is poor, the difference is caused with the construction application requirement, and the flame retardance is not ideal enough; in addition, the Vicat softening temperature wanders around 90 ℃, the friction coefficient of the inner and outer pipe walls is large, the difficulty of construction and use is increased, meanwhile, the function singleness of the traditional wire sleeve does not have multiple protection functions, and when the temperature of the traditional wire sleeve changes violently or seasonally, the external protective layer of the wire can shrink and expand due to the change of temperature difference, the protective layer usually returns to the original elasticity and properties after shrinking and expanding beyond a certain limit, cracks can appear on the protective layer, the wire can be disconnected from the protective layer, and the danger coefficient is greatly increased.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel PVC wire casing with soften protective layer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel PVC electric wire casing with a softening protection layer is characterized by comprising a PVC casing, a telescopic butt flange and an electric wire protection layer, wherein the telescopic butt flange is arranged in the middle of the PVC casing, a first butt ring and a second butt ring are arranged at the butt joint of the telescopic butt flange, the upper end and the lower end of the butt joint of the first butt ring and the second butt ring are fixedly connected through screwing screws, a shell is arranged on the outer side of the telescopic butt flange, the shell is fixedly connected with the non-butt joint surface of the first butt ring and the second butt ring, one side of the first butt ring, which is close to the inner ring, is provided with an annular clamping groove, annular sealing teeth are arranged on the second butt ring, a limiting sleeve ring is fixedly connected at the non-butt joint part, which is close to the first butt ring and the second butt ring, inside the shell, and the electric wire protection layer is arranged on the outer side of the PVC casing, the electric wire protective layer is respectively butted with two ends of the inside of the telescopic butt flange, and one end of the electric wire protective layer inserted into the inside of the telescopic butt flange is fixedly connected with the telescopic sliding strip.

Further, the electric wire protective layer is sequentially provided with a softening protective layer, a heat-resistant layer, an insulating layer, a waterproof layer and an anti-freezing layer from inside to outside.

Further, the softening protection layer is a silica gel layer with the thickness of 2 mm.

Further, the heat-resistant layer is heat-resistant rubber with the thickness of 1 mm.

Further, the insulating layer is insulating rubber with the thickness of 1 mm.

Further, the waterproof layer is waterproof rubber with the thickness of 1 mm.

Further, the anti-freezing layer is made of anti-freezing rubber with the thickness of 2 mm.

Furthermore, the annular clamping groove is matched with the annular sealing teeth in size.

Furthermore, one end of the tightening screw is fixedly connected with a screw cap.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model provides a pair of novel PVC wire casing with soften protective layer can protect the internal electric wire through being provided with the softening protective layer in the outside of electric wire, avoids the internal electric wire because of the wearing and tearing that the inside displacement caused in transportation and installation.

(2) The utility model provides a pair of novel PVC wire casing with soften protective layer has promoted the factor of safety of electric wire greatly through setting up heat-resistant layer, insulating layer, waterproof layer and freeze-proof coating at the electric wire protective layer, has prolonged the life of electric wire when safe handling.

(3) The utility model provides a pair of novel PVC wire casing with soften protective layer passes through the flexible flange of design, has effectively solved the wire protective layer and has leaded to the torn problem of protective layer because of the shrink inflation that season or weather temperature's change appears.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a novel PVC wire casing provided with a softening protective layer according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a novel PVC wire casing provided with a softened protective layer according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of a novel PVC wire casing expansion butt flange with a softening protection layer according to an embodiment of the present invention.

Reference numerals:

1. PVC sleeves; 2. a telescopic butt flange; 3. a first docking ring; 4. screwing down the screw; 5. a wire protective layer; 6. a second docking ring; 7. an anti-freezing layer; 8. a waterproof layer; 9. an insulating layer; 10. a heat-resistant layer; 11. Softening the protective layer; 12. a housing; 13. a telescopic slide bar; 14. an electric wire; 15. an annular neck; 16. an annular seal tooth; 17. a limiting lantern ring; 18. and (5) screwing the cap.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, a novel PVC wire casing with a softening protection layer according to an embodiment of the present invention includes a PVC casing 1, a flexible docking flange 2 and a wire protection layer 5, the flexible docking flange 2 is disposed in the middle of the PVC casing 1, a first docking ring 3 and a second docking ring 6 are disposed at the docking position of the flexible docking flange 2, the upper and lower ends of the docking position of the first docking ring 3 and the second docking ring 6 are fixedly connected by a tightening screw 4, a housing 12 is disposed outside the flexible docking flange 2, the housing 12 is fixedly connected to the non-docking surface of the first docking ring 3 and the second docking ring 6, a ring slot 15 is disposed on one side of the first docking ring 3 close to the inner ring, a ring sealing tooth 16 is disposed on the second docking ring 6 close to the ring slot 15, the inner portion of the shell 12 is close to a limiting sleeve ring 17 fixedly connected to the non-butt-joint positions of the first butt-joint ring 3 and the second butt-joint ring 6, an electric wire protective layer 5 is arranged on the outer side of the PVC sleeve 1, the electric wire protective layer 5 is respectively in butt joint with the two inner ends of the telescopic butt-joint flange 2, and the electric wire protective layer 5 is inserted into a telescopic sliding strip 13 fixedly connected to the inner portion of the telescopic butt-joint flange 2.

Through the above scheme of the utility model, the electric wire protective layer 5 is sequentially provided with the softening protective layer 11, the heat-resistant layer 10, the insulating layer 9, the waterproof layer 8 and the anti-freezing layer 7 from inside to outside, the softening protective layer 11 is a silica gel layer with a thickness of 2 mm, which can protect the internal electric wire 14 and avoid the abrasion of the internal electric wire 14 caused by internal displacement in the transportation and installation processes, the heat-resistant layer 10 is heat-resistant rubber with a thickness of 1 mm, which effectively isolates the influence of external high temperature on the resistance of the internal electric wire 14, and always keeps the electric wire 14 at a proper temperature for current transmission, the insulating layer 9 is insulating rubber with a thickness of 1 mm, which effectively isolates the electric wire 14 from the outside and avoids safety accidents caused by electric leakage, the waterproof layer 8 is waterproof rubber with a thickness of 1 mm, which avoids the influence of electric wire 14 caused by water caused by the external environment, the anti-freezing layer 7 is the frostproofing rubber of thickness 2 millimeters, avoids crossing the problem that the protective layer frost crack because of external environment temperature hangs down, ring groove 15 with 16 size looks adaptations of annular seal tooth, screw up 4 one end fixedly connected with of spiral and revolve cap 18, the convenient dismantlement installation to flexible flange 2.

When the temperature-adjustable expansion joint is used specifically, after the electric wire 14 is installed, the electric wire protective layer 5 can stretch out and draw back and expand due to temperature change, the distance between the butt joints of the telescopic butt flange 2 is adjusted by screwing the screws 4 according to the highest and lowest temperature adjustment in all seasons of the local world, when the electric wire protective layer 5 contracts due to temperature reduction, the telescopic sliding strip 13 slides towards the outer side of the telescopic butt flange 2 to properly relieve the tension of the electric wire protective layer 5 caused by contraction, when the temperature rises, the expansion of the electric wire protective layer 5 leads to the extension of the electric wire protective layer 5, and at the moment, the telescopic sliding strip 13 gathers towards the center of the telescopic butt flange 2, and the extrusion force inside the electric wire protective layer 5 is.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The novel PVC wire casing with the softening protection layer is characterized by comprising a PVC casing (1), a telescopic butt flange (2) and a wire protection layer (5), wherein the telescopic butt flange (2) is arranged in the middle of the PVC casing (1), a first butt ring (3) and a second butt ring (6) are arranged at the butt joint of the telescopic butt flange (2), the upper end and the lower end of the butt joint of the first butt ring (3) and the second butt ring (6) are fixedly connected through a screwing spiral (4), a shell (12) is arranged on the outer side of the telescopic butt flange (2), the shell (12) is fixedly connected with the non-butt surfaces of the first butt ring (3) and the second butt ring (6), an annular clamping groove (15) is formed in one side, close to the inner ring, of the first butt ring (3), and an annular sealing tooth (16) is arranged at the position, close to the annular clamping groove (15), of the second butt ring (6), the utility model discloses a flexible butt flange, including shell (12), first butt ring (3) and the equal fixedly connected with spacing lantern ring (17) of non-butt joint department of second butt ring (6) are close to in shell (12) inside, PVC sleeve pipe (1) outside is provided with electric wire protective layer (5), electric wire protective layer (5) dock respectively with the inside both ends of flexible butt flange (2), electric wire protective layer (5) insert the equal fixed connection slip strip (13) of one end inside flexible butt flange (2).

2. The novel PVC electric wire sleeve with the softening protection layer is characterized in that the electric wire protection layer (5) is provided with the softening protection layer (11), the heat-resistant layer (10), the insulating layer (9), the waterproof layer (8) and the anti-freezing layer (7) from inside to outside in sequence.

3. The new PVC bushing for electric wires provided with a softening protection layer according to claim 2, characterized in that the softening protection layer (11) is a silicone layer with a thickness of 2 mm.

4. The new PVC bushing provided with a softening and protecting layer according to claim 2, characterized in that the heat-resistant layer (10) is heat-resistant rubber with a thickness of 1 mm.

5. The new PVC bushing provided with a softening and protecting layer according to claim 2, characterized in that the insulating layer (9) is insulating rubber with a thickness of 1 mm.

6. The new PVC conduit with a softening protection layer according to claim 2, characterized in that the waterproof layer (8) is waterproof rubber with a thickness of 1 mm.

7. The new PVC bushing provided with a softening and protecting layer according to claim 2, characterized in that the anti-freezing layer (7) is anti-freezing rubber with a thickness of 2 mm.

8. The PVC conduit sleeve with a softening and protecting layer as claimed in claim 1, wherein the annular clamping groove (15) is adapted to the size of the annular sealing tooth (16).

9. The new PVC conduit sleeve with softening protection layer as claimed in claim 1, wherein a screw cap (18) is fixedly connected to one end of the tightening screw (4).