PVC threading pipe convenient to fixedly connect
By incorporating threaded connections and sealing structures, insect-repellent blocks, and anti-corrosion layers, the design solves the problem of PVC conduit being easily damaged underground, achieving higher sealing and protection, and extending its service life.
Patent Information
- Application Number
- CN202520185128.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-06
AI Technical Summary
Existing PVC conduit is easily damaged by insects or rodents when buried underground, and its anti-corrosion and waterproof performance is poor, and its sealing is insufficient.
The pipe body design features threaded connections, combined with a sealing structure, insect repellent block, anti-corrosion layer, and waterproof layer. Epoxy resin and silicone sealant are used to improve sealing and protection.
It improves the sealing of the pipe joints, prevents insect bites, enhances the corrosion and water resistance of PVC pipes, strengthens the protection of PVC conduits, and improves the stability and service life of PVC conduits.
Smart Images

Figure CN223942384U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conduit technology, and in particular to a PVC conduit that is easy to fix and connect. Background Technology
[0002] The full name of conduit is "building insulating electrical conduit". In layman's terms, it is a white rigid PVC conduit. It is a conduit used for carrying electrical wires, which is corrosion-resistant and leak-proof. It is divided into plastic conduit, stainless steel conduit, and carbon steel conduit. It is used in normal indoor environments and in places with high temperature, dust, vibration, and fire hazards. It can also be used in humid places. However, it must not be used in particularly humid places, places with acid, alkali, salt corrosion, or places with explosion hazards.
[0003] In the prior art, such as Chinese Patent Publication No. CN219420155U, a PVC conduit for easy fixing and connection is disclosed. This conduit includes a pipe body, a connector block, a magnet, a connecting block, an iron sheet, a threaded wire, a steel sheet layer, a heat insulation pad, a waterproof membrane, a protective steel plate, and a rubber ring. The connector block and magnet are installed on the left side of the pipe body, the connecting block and the iron sheet are installed on the right side of the pipe body, the threaded wire is inside the pipe body, the steel sheet layer is installed inside the pipe body, the heat insulation pad is installed on the outside of the pipe body, the waterproof membrane is installed on the outside of the heat insulation pad, the protective steel plate is installed on the outside of the waterproof membrane, and the rubber ring is installed on the outside of the protective steel plate. This PVC conduit for easy fixing and connection, by installing connecting structures on both sides of the pipe body, makes manual assembly operations faster. The protective structure installed on the outside of the heat insulation pad greatly improves the protection of the PVC conduit and extends its service life.
[0004] Although the aforementioned patent describes a method for easily fixing and connecting PVC conduits, which facilitates faster manual assembly by installing connecting structures on both sides of the conduit and significantly improves its protection and lifespan by installing a protective structure on the outside of the insulation pad, the lack of insect-repellent mechanisms makes the PVC conduits susceptible to damage from insects or rodents underground. Furthermore, their corrosion and waterproof performance is poor, and the sealing during connection is inadequate. Utility Model Content
[0005] The purpose of this utility model is to solve the problems in the existing technology where PVC conduits are pre-buried underground without insect-repellent mechanisms, making them susceptible to damage from insects or rodents underground, and also resulting in poor corrosion and water resistance and poor sealing when connected. The present invention proposes a PVC conduit that is easy to fix and connect.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a PVC conduit for easy fixed connection, comprising a first conduit body, a second conduit body being threaded to one end of the first conduit body, a sealing structure for sealing the joint on the outer wall of the opposite end of the first conduit body and the second conduit body, a first anti-corrosion layer being provided inside the first conduit body, and a second anti-corrosion layer being provided inside the first anti-corrosion layer.
[0007] Preferably, the sealing structure includes an outer sleeve fixed to the outer wall of the first tube body, a sealing plate provided on the outer wall of the second tube body, and a sealing groove matching the sealing plate provided at one end of the outer sleeve.
[0008] Preferably, a connecting sleeve is fixed on the outer wall of the second tube, and the sealing plate is fixed on the end of the connecting sleeve facing the outer connecting sleeve.
[0009] Preferably, an outer sheath is fixed to the outer wall of both the first tube and the second tube, and a plurality of insect-repelling blocks are provided inside the outer sheath.
[0010] Preferably, a waterproof layer is adhered and fixed to the inner wall of the first anti-corrosion layer, a fireproof layer is adhered and fixed to the inner wall of the waterproof layer, and the second anti-corrosion layer is adhered and fixed to the inner wall of the fireproof layer.
[0011] Preferably, a threaded sleeve is fixed to the end of the first tube facing the second tube, and a threaded groove matching the threaded sleeve is opened on the end of the second tube facing the first tube.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] In this invention, when the first pipe body is threadedly connected to the second pipe body via a threaded sleeve, the sealing plate is inserted into the sealing groove inside the outer sleeve, achieving a sealing effect on the gap between the first and second pipe bodies, resulting in higher sealing performance. Furthermore, the device incorporates multiple insect-repellent blocks; when protected by the outer sleeve, these blocks emit pungent odors reminiscent of insects and rodents, preventing them from biting through the first or second pipe body, thus enhancing stability. The device also features a first and second anti-corrosion layer, both coated with epoxy resin. Epoxy resin possesses excellent adhesion, chemical resistance, and mechanical properties. It forms a dense protective film on the surface of the PVC conduit, further isolating the pipe from external corrosive substances. Finally, a waterproof layer is constructed using silicone sealant, a sealant made primarily of polydimethylsiloxane, which exhibits good water resistance, weather resistance, and flexibility. Attached Figure Description
[0014] Figure 1A perspective view is provided for this utility model to facilitate the fixed connection of PVC conduit;
[0015] Figure 2 This utility model provides a cross-sectional view for facilitating the fixed connection of PVC conduit;
[0016] Figure 3 This utility model presents a schematic diagram of the internal layered structure of a PVC conduit that facilitates fixed connection.
[0017] Legend: 1. First pipe body; 2. Second pipe body; 3. Screw sleeve; 4. Screw groove; 5. Sealing structure; 501. Outer sleeve; 502. Sealing plate; 503. Sealing groove; 6. Connecting sleeve; 7. Outer sheath; 8. Insect repellent block; 9. First anti-corrosion layer; 10. Waterproof layer; 11. Fireproof layer; 12. Second anti-corrosion layer. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Example 1, as Figure 1-3 As shown, this utility model provides a PVC conduit for easy fixed connection, including a first pipe body 1, a second pipe body 2 threadedly connected to one end of the first pipe body 1, a sealing structure 5 for sealing the joint on the outer wall of the opposite end of the first pipe body 1 and the second pipe body 2, a first anti-corrosion layer 9 is provided inside the first pipe body 1, and a second anti-corrosion layer 12 is provided inside the first anti-corrosion layer 9.
[0021] The overall effect of Embodiment 1 is that, through the sealing structure 5, the gap at the joint between the first pipe body 1 and the second pipe body 2 can be sealed. Furthermore, the first anti-corrosion layer 9 and the second anti-corrosion layer 12 are both coated with epoxy resin. Epoxy resin has excellent adhesion, chemical corrosion resistance, and mechanical properties. It can form a dense protective film on the surface of the PVC conduit, further isolating the pipe from external corrosive substances.
[0022] Example 2, as Figure 1-3As shown, the sealing structure 5 includes an outer sleeve 501 fixed on the outer wall of the first pipe body 1, a sealing plate 502 on the outer wall of the second pipe body 2, a sealing groove 503 matching the sealing plate 502 at one end of the outer sleeve 501, a connecting sleeve 6 fixed on the outer wall of the second pipe body 2, the sealing plate 502 fixed at the end of the connecting sleeve 6 facing the outer sleeve 501, an outer sheath 7 fixed on the outer walls of both the first pipe body 1 and the second pipe body 2, a plurality of insect repellent blocks 8 inside the outer sheath 7, a waterproof layer 10 attached to the inner wall of the first anti-corrosion layer 9, a fireproof layer 11 attached to the inner wall of the waterproof layer 10, a second anti-corrosion layer 12 attached to the inner wall of the fireproof layer 11, a threaded sleeve 3 fixed on the end of the first pipe body 1 facing the second pipe body 2, and a threaded groove 4 matching the threaded sleeve 3 at the end of the second pipe body 2 facing the first pipe body 1.
[0023] The overall effect of Embodiment 2 is that when the first tube 1 is threadedly connected to the second tube 2 through the threaded groove 4 of the threaded sleeve 3, the sealing plate 502 will be inserted into the sealing groove 503 opened in the outer sleeve 501, thereby achieving the effect of sealing the gap when the first tube 1 and the second tube 2 are joined, resulting in higher sealing performance. Furthermore, through the setting of multiple insect repellent blocks 8, when protected by the outer sheath 7, the insect repellent blocks 8 will emit irritating smells of insects and rodents, preventing insects or rodents from biting through the first tube 1 or the second tube 2, thus enhancing stability. Through the setting of the waterproof layer 10, which uses silicone sealant, the silicone sealant is made of polydimethylsiloxane as the main raw material, which has good water resistance, weather resistance and flexibility. Through the setting of the fireproof layer 11, the fireproof effect is achieved.
[0024] Working Principle: When the device is in use, if the first tube 1 is threadedly connected to the second tube 2 via the threaded groove 4 of the threaded sleeve 3, the sealing plate 502 will be inserted into the sealing groove 503 opened in the outer sleeve 501, achieving a sealing effect on the gap when the first tube 1 and the second tube 2 are joined, resulting in higher sealing performance. Furthermore, the device utilizes multiple insect-repellent blocks 8, which, when protected by the outer sheath 7, emit pungent odors reminiscent of insects and rodents, preventing insects or rodents from biting through the first tube 1 or the second tube 2, thus enhancing stability. Additionally, the device employs a first anti-corrosion layer 9 and a second anti-corrosion layer 12, both coated with epoxy resin. Epoxy resin possesses excellent adhesion, chemical resistance, and mechanical properties. It can form a dense protective film on the surface of PVC conduit, further isolating the conduit from contact with external corrosive substances. Through the setting of the waterproof layer 10, and the waterproof layer 10 using silicone sealant, which is a sealant made of polydimethylsiloxane as the main raw material, it has good water resistance, weather resistance and flexibility.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A PVC conduit for easy fixing and connection, comprising a first conduit body (1), characterized in that: One end of the first tube (1) is threaded to a second tube (2). The outer wall of the opposite end of the first tube (1) and the second tube (2) is provided with a sealing structure (5) for sealing the joint. The first tube (1) is provided with a first anti-corrosion layer (9), and the inner side of the first anti-corrosion layer (9) is provided with a second anti-corrosion layer (12).
2. The PVC conduit for easy fixing and connection according to claim 1, characterized in that: The sealing structure (5) includes an outer sleeve (501) fixed on the outer wall of the first tube (1), a sealing plate (502) is provided on the outer wall of the second tube (2), and a sealing groove (503) matching the sealing plate (502) is opened at one end of the outer sleeve (501).
3. The PVC conduit for easy fixing and connection according to claim 2, characterized in that: A connecting sleeve (6) is fixed on the outer wall of the second tube (2), and the sealing plate (502) is fixed on the end of the connecting sleeve (6) facing the outer sleeve (501).
4. The PVC conduit for easy fixing and connection according to claim 1, characterized in that: The outer walls of the first tube (1) and the second tube (2) are both fixed with outer sheaths (7), and the outer sheaths (7) are provided with multiple insect repellent blocks (8).
5. A PVC conduit for easy fixing and connection according to claim 1, characterized in that: A waterproof layer (10) is attached and fixed to the inner wall of the first anti-corrosion layer (9), a fireproof layer (11) is attached and fixed to the inner wall of the waterproof layer (10), and the second anti-corrosion layer (12) is attached and fixed to the inner wall of the fireproof layer (11).
6. The PVC conduit for easy fixing and connection according to claim 1, characterized in that: The first tube (1) is fixed with a screw sleeve (3) at one end facing the second tube (2), and the second tube (2) is provided with a screw groove (4) that matches the screw sleeve (3) at one end facing the first tube (1).
Citation Information
Patent Citations
PVC threading pipe convenient to fixedly connect
CN219420155U