Impact-resistant and compression-resistant PVC electrical conduit

Abstract

The utility model belongs to the technical field of electrical bushings, and particularly relates to an impact-resistant and compression-resistant PVC electrical bushing, which comprises a bushing pipeline, a pipe diameter adjusting assembly, a butt joint pipe inserted at the end part of the bushing pipeline and a mounting assembly connected between the bushing pipelines, the pipeline reinforcing assembly comprises a clamping assembly connected to the surface of the casing pipeline, a guiding assembly connected to the surface of the clamping assembly and a reinforcing steel wire penetrating through the clamping assembly and the guiding assembly. The end, matched with the casing pipe in size, of the butt joint pipe is inserted into the end of the casing pipe, then the threaded sleeve rotates on the surface of the convex thread and transversely moves, the threaded sleeve transversely moves to extrude the extension ring to drive the sealing ring to the end of the casing pipe, and the butt joint pipe is stably installed through threaded connection of the threaded sleeve and the convex thread. And the sealing ring ensures the sealing connection of the casing pipe and the pipeline, so that the casing pipe can be conveniently connected with pipelines with different diameters.

Description

Technical Field

[0001] This utility model belongs to the field of electrical conduit technology, specifically relating to an impact-resistant and pressure-resistant PVC electrical conduit. Background Technology

[0002] PVC electrical conduit is a type of pipe fitting made primarily of polyvinyl chloride (PVC) resin, with the addition of necessary additives and formed by twin-screw extrusion. It is widely used in building electrical installation projects to protect wires or cables.

[0003] PVC electrical conduit boasts excellent insulation properties, capable of withstanding high-voltage surges without breakdown, with a breakdown voltage up to 25 kV, effectively preventing electrical hazards and ensuring electrical safety. Furthermore, PVC electrical conduit can withstand significant pressure and impact, making it suitable for concealed installation within concrete. It is not easily damaged by external pressure and can be safely concealed within concrete, floor slabs, or walls. Simultaneously, PVC electrical conduit has a high oxygen index, exhibiting excellent flame retardancy; it self-extinguishes once removed from a flame, reducing the risk of fire. In addition, PVC electrical conduit has good moisture resistance, unlike metal conduits which rust when damp. It also possesses acid and alkali resistance and oil resistance, enabling it to adapt to various harsh environments.

[0004] A significant problem with existing PVC electrical conduits in practical applications is that when connected to pipes of different diameters, a mismatch often occurs. When construction workers attempt to forcibly connect these mismatched conduits to the pipes, the joints are prone to loosening. Even if the connection appears tight, there is a risk of poor sealing. This sealing defect creates conditions for moisture, dust, and other impurities to enter the conduit. Once these impurities enter, they may damage the electrical components such as wires and cables protected by the conduit, thereby affecting the normal operation and safety of the entire electrical system. Utility Model Content

[0005] The purpose of this utility model is to provide an impact-resistant and pressure-resistant PVC electrical conduit, which aims to solve the problem that when existing PVC electrical conduits are connected to pipes of different diameters, pipe diameter mismatch often occurs. Forced connection can easily lead to loose joints or poor sealing, providing conditions for impurities to enter the conduit, which may damage electrical components and affect the operation and safety of the electrical system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an impact- and pressure-resistant PVC electrical conduit, comprising a conduit pipe, and...

[0007] The pipe diameter adjustment assembly includes a butt joint that is inserted into the end of the casing pipe and an installation assembly that connects the casing pipe to the casing pipe.

[0008] The pipe reinforcement assembly includes a clamping assembly connected to the surface of the casing pipe, a guide assembly connected to the surface of the clamping assembly, and a reinforcing steel wire penetrating the interior of the clamping assembly and the guide assembly.

[0009] As a preferred embodiment of the impact-resistant and pressure-resistant PVC electrical conduit of this utility model, the installation assembly includes an outer ring connected to the surface of the connecting pipe, a sealing ring connected to the side surface of the outer ring, a threaded sleeve fitted onto the surface of the outer ring, and a convex thread connected to the surface of the conduit pipe and adapted to the threaded sleeve.

[0010] As a preferred embodiment of the impact-resistant and pressure-resistant PVC electrical conduit of this utility model, the threaded sleeve and the convex thread are threadedly connected, and the outer surface diameter of the wide part of the connecting pipe is adapted to the inner wall diameter of the conduit pipe.

[0011] As a preferred embodiment of the impact-resistant and pressure-resistant PVC electrical conduit of this utility model, the clamping assembly includes a clamping shell connected to the surface of the conduit pipe, a first through hole opened on the surface of the clamping shell, a clamping block inserted into the inside of the clamping shell and of a matching size, and a second through hole opened on the surface of the clamping shell and of the same size as the first through hole.

[0012] As a preferred embodiment of the impact-resistant and pressure-resistant PVC electrical conduit of this utility model, the clamping assembly further includes a threaded hole formed on the surface of the clamping block, a screw inserted into and adapted to the threaded hole, and a bearing mounted on the surface of the screw and fitted onto the surface of the clamping shell.

[0013] As a preferred embodiment of the impact-resistant and pressure-resistant PVC electrical conduit of this utility model, the guide assembly includes a guide groove formed on the surface of the clamping shell and a guide post that penetrates the inside of the guide groove and is connected to the surface of the clamping block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention involves inserting one end of the connecting pipe that matches the size of the casing pipe into the end of the casing pipe. Then, the threaded sleeve rotates and moves laterally on the surface of the convex thread, causing it to move laterally and compress the outer ring, which in turn drives the sealing ring to the end of the casing pipe. The connecting pipe is securely installed through the threaded connection between the threaded sleeve and the convex thread, and the sealing ring ensures a sealed connection between the two. This facilitates the connection between the casing pipe and pipes of different diameters.

[0016] In this invention, after the reinforcing steel wire passes through the interior of the first and second through holes, the screw is rotated. The screw, through its threaded connection with the threaded hole, drives the clamping block to move upward. The clamping block, in turn, drives the second through hole to move upward and misaligns with the first through hole, thereby fixing the reinforcing steel wire. By setting the reinforcing steel wire, the tensile strength of the casing pipe can be effectively improved. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is an exploded structural diagram of the pipe diameter adjustment component of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the pipe diameter adjustment component and the pipe reinforcement component of this utility model;

[0021] Figure 4 This is a cross-sectional view of the connection structure of the pipe reinforcement component of this utility model;

[0022] Figure 5 This is an exploded view of the connection structure of the pipeline reinforcement component of this utility model.

[0023] In the diagram: 100, sleeve pipe; 200, pipe diameter adjustment assembly; 201, butt joint pipe; 202, installation assembly; 202a, outer ring; 202b, sealing ring; 202c, threaded sleeve; 202d, convex thread; 300, pipe reinforcement assembly; 301, clamping assembly; 301a, clamping shell; 301b, first through hole; 301c, clamping block; 301d, second through hole; 301e, threaded hole; 301f, screw; 301g, bearing; 302, guide assembly; 302a, guide groove; 302b, guide post; 303, reinforcing steel wire. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides the following technical solution: an impact-resistant and pressure-resistant PVC electrical conduit, comprising a conduit pipe 100, and...

[0026] The pipe diameter adjustment assembly 200 includes a connecting pipe 201 inserted into the end of the sleeve pipe 100 and an installation assembly 202 connected between the sleeve pipe 100 and the sleeve pipe 100.

[0027] The pipe reinforcement assembly 300 includes a clamping assembly 301 connected to the surface of the sleeve pipe 100, a guide assembly 302 connected to the surface of the clamping assembly 301, and a reinforcing steel wire 303 penetrating the interior of the clamping assembly 301 and the guide assembly 302.

[0028] It should be noted that a protective layer made of elastic cushioning material such as EVA ethylene-vinyl acetate copolymer or polyurethane foam is added to the surface of the casing pipe 100. This protective layer adopts a ring-shaped tight-fitting structure and is firmly adhered to the casing surface by hot melt adhesive or high-viscosity double-sided adhesive, ensuring that it is tightly bonded to the casing during transportation, construction and use and is not easy to fall off.

[0029] Preferably, the mounting assembly 202 includes an extended ring 202a connected to the surface of the connecting pipe 201, a sealing ring 202b connected to the side surface of the extended ring 202a, a threaded sleeve 202c fitted onto the surface of the extended ring 202a, and a protruding thread 202d connected to the surface of the casing pipe 100 and adapted to the threaded sleeve 202c.

[0030] In practical use, the butt joint 201 and the sleeve pipe 100 can be connected by the threaded connection between the threaded sleeve 202c and the convex thread 202d.

[0031] Preferably, the threaded sleeve 202c and the convex thread 202d are threadedly connected, and the outer surface diameter of the wide part of the butt joint pipe 201 is adapted to the inner wall diameter of the sleeve pipe 100.

[0032] In practical use, during installation, the wide part of the connecting pipe 201 can be inserted into the inside of the sleeve pipe 100, so that the connection can be kept from loosening when the connecting pipe 201 is connected to the sleeve pipe 100.

[0033] Preferably, the clamping assembly 301 includes a clamping shell 301a connected to the surface of the sleeve pipe 100, a first through hole 301b formed on the surface of the clamping shell 301a, a clamping block 301c inserted into the interior of the clamping shell 301a and adapted in size, and a second through hole 301d formed on the surface of the clamping shell 301a and having the same size as the first through hole 301b.

[0034] In practical use, the setting of the first through hole 301b and the second through hole 301d makes it easy for the reinforcing steel wire 303 to pass through the middle.

[0035] Preferably, the clamping assembly 301 further includes a threaded hole 301e formed on the surface of the clamping block 301c, a screw 301f inserted into and adapted to the threaded hole 301e, and a bearing 301g mounted on the surface of the screw 301f and fitted onto the surface of the clamping shell 301a.

[0036] In practical use, when the screw 301f rotates, it can drive the clamping block 301c to move upward through the threaded connection with the threaded hole 301e. When the clamping block 301c moves upward, it can drive the second through hole 301d to move upward. The position of the reinforcing steel wire 303 is fixed by the misalignment between the second through hole 301d and the first through hole 301b.

[0037] Preferably, the guide assembly 302 includes a guide groove 302a formed on the surface of the clamping shell 301a and a guide post 302b that penetrates the interior of the guide groove 302a and is connected to the surface of the clamping block 301c.

[0038] In practical use, when the clamping block 301c is subjected to force, it can drive the guide post 302b to slide inside the guide groove 302a, which can maintain the stability of the clamping block 301c during movement.

[0039] Working principle: When using this PVC electrical conduit, if it is necessary to connect pipes of different sizes, the end of the fitting connector 201 that matches the size of the conduit pipe 100 can be inserted into the end of the conduit pipe 100. Then, the threaded sleeve 202c is moved to the end of the convex thread 202d and rotated. While rotating on the surface of the convex thread 202d, the threaded sleeve 202c will move laterally. When the threaded sleeve 202c moves laterally to the extrusion extension ring 202a, thereby driving the sealing ring 202b to move to the end of the conduit pipe 100, the connecting pipe 201 can be securely installed at the end of the conduit pipe 100 through the threaded connection between the threaded sleeve 202c and the convex thread 202d. The sealing ring 202b can ensure the sealed connection between the connecting pipe 201 and the conduit pipe 100.

[0040] At the same time, after the reinforcing steel wire 303 is passed through the inside of the first through hole 301b and the second through hole 301d, the screw 301f is rotated. When the screw 301f rotates, it will drive the clamping block 301c to move upward through the threaded connection with the threaded hole 301e. When the clamping block 301c moves upward, it will drive the second through hole 301d to move upward together, so that it is misaligned with the first through hole 301b, thereby fixing the reinforcing steel wire 303. By setting the reinforcing steel wire 303, the tensile strength of the sleeve pipe 100 can be effectively improved.

[0041] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An impact- and pressure-resistant PVC electrical conduit, characterized in that: Including the casing pipe (100), and, The pipe diameter adjustment assembly (200) includes a butt joint (201) inserted into the end of the casing pipe (100) and an installation assembly (202) connected between the casing pipe (100) and the casing pipe (100). The pipe reinforcement assembly (300) includes a clamping assembly (301) connected to the surface of the casing pipe (100), a guide assembly (302) connected to the surface of the clamping assembly (301), and a reinforcing wire (303) penetrating the interior of the clamping assembly (301) and the guide assembly (302). The mounting assembly (202) includes an extended ring (202a) connected to the surface of the connecting pipe (201), a sealing ring (202b) connected to the side surface of the extended ring (202a), a threaded sleeve (202c) fitted onto the surface of the extended ring (202a), and a protruding thread (202d) connected to the surface of the casing pipe (100) and adapted to the threaded sleeve (202c).

2. The impact-resistant and pressure-resistant PVC electrical conduit according to claim 1, characterized in that: The threaded sleeve (202c) and the convex thread (202d) are threaded together, and the outer surface diameter of the wide part of the connecting pipe (201) is adapted to the inner wall diameter of the sleeve pipe (100).

3. The impact-resistant and pressure-resistant PVC electrical conduit according to claim 1, characterized in that: The clamping assembly (301) includes a clamping shell (301a) connected to the surface of the sleeve pipe (100), a first through hole (301b) opened on the surface of the clamping shell (301a), a clamping block (301c) inserted into the interior of the clamping shell (301a) and adapted in size, and a second through hole (301d) opened on the surface of the clamping shell (301a) and having the same size as the first through hole (301b).

4. The impact-resistant and pressure-resistant PVC electrical conduit according to claim 3, characterized in that: The clamping assembly (301) further includes a threaded hole (301e) formed on the surface of the clamping block (301c), a screw (301f) inserted into and adapted to the threaded hole (301e), and a bearing (301g) mounted on the surface of the screw (301f) and fitted onto the surface of the clamping shell (301a).

5. The impact-resistant and pressure-resistant PVC electrical conduit according to claim 4, characterized in that: The guide assembly (302) includes a guide groove (302a) formed on the surface of the clamping shell (301a) and a guide post (302b) that penetrates the inside of the guide groove (302a) and is connected to the surface of the clamping block (301c).

Images