PVC drain pipe with protective structure

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) drainage pipes, and discloses a PVC drainage pipe with a protective structure, which comprises an outer pipe sleeve, EPDM (ethylene-propylene-diene monomer) rubber is arranged in the outer pipe sleeve, a metal net is mounted in the EPDM rubber, the outer surface of the metal net is coated with an epoxy coal pitch coating, the inner wall of the outer pipe sleeve is connected with a support block, and the inner wall of the outer pipe sleeve is connected with a protective layer. An inner water pipe is connected into the supporting block, an inner guide groove is formed in the inner wall of the inner water pipe, and a guide mark is arranged outside the outer pipe sleeve. According to the utility model, the outer pressure-resistant protective structure is arranged, the main body of the outer pipe sleeve is made of the EPDM rubber when in use, the EPDM rubber has heat-resistant and anti-aging functions, the metal net is filled in the EPDM rubber to increase the impact resistance of the EPDM rubber, and the epoxy coal pitch coating is coated outside the outer pipe sleeve.

Description

Technical Field

[0001] This utility model relates to the field of PVC drainage pipe technology, specifically a PVC drainage pipe with a protective structure. Background Technology

[0002] PVC drainage pipes are made from polyvinyl chloride (PVC) resin as the main raw material, with the addition of appropriate amounts of stabilizers, lubricants, fillers, colorants, etc., through extrusion molding with a plastic extruder and injection molding with an injection molding machine. Polyvinyl chloride has strong heat resistance and corrosion resistance, so PVC drainage pipes are widely used in various industries.

[0003] The primary use of PVC drainage pipes is for drainage. Due to varying usage environments, the installation environment of PVC pipes also differs. Both outdoor and subterranean environments can cause corrosion to the exterior of the pipes, thus affecting their lifespan. Therefore, we propose a PVC drainage pipe with a protective structure to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a PVC drainage pipe with a protective structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PVC drainage pipe with a protective structure, including an outer sleeve, an EPDM rubber inside the outer sleeve, a metal mesh inside the EPDM rubber, and an epoxy coal tar coating on the outer surface of the metal mesh.

[0006] As a further technical solution of this utility model, the metal mesh is filled and wrapped inside the outer sleeve, the EPDM rubber is coated with an epoxy coal tar coating on the outside, and the EPDM rubber is provided inside the outer sleeve.

[0007] As a further technical solution of this utility model, the inner wall of the outer sleeve is connected to a support block, the inside of the support block is connected to an inner water pipe, the inner wall of the inner water pipe is provided with an inner guide groove, and the outside of the outer sleeve is provided with a guide mark.

[0008] As a further technical solution of this utility model, the inner guide groove is spirally arranged on the inner wall of the inner guide groove, and the outer sleeve is connected to the support block through the inner water pipe. Multiple sets of support blocks are provided.

[0009] As a further technical solution of this utility model, the inner water pipe is coated with an epoxy resin coating, the inner water pipe is provided with a PVC layer, and the outer side of the PVC layer is provided with a polyethylene layer.

[0010] As a further technical solution of this utility model, the epoxy resin coating and the polyethylene layer are respectively disposed inside and outside the inner water pipe, and the epoxy resin coating, PVC layer and polyethylene layer are connected in sequence.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this PVC drainage pipe with a protective structure not only achieves external pressure resistance and protection, noise reduction and flow guidance, but also internal corrosion protection.

[0012] (1) By setting an external pressure protection structure, the advantages of this utility model are: when in use, the main body of the outer sleeve is made of EPDM rubber. EPDM rubber has heat resistance and anti-aging function. Metal mesh is filled inside the EPDM rubber to increase the impact resistance of the EPDM rubber. Epoxy coal tar coating is applied to the outside of the outer sleeve to increase the insulation and corrosion resistance of the outer sleeve and increase the service life of the pipe body, thereby realizing the external pressure protection function.

[0013] (2) By setting a noise reduction and flow guiding structure, the present invention is beneficial in that: when in use, the outer pipe sleeve and the inner water pipe are connected together by a support block, and the outer pipe sleeve forms a cavity outside the inner water pipe by the support block. The cavity has a porous or honeycomb structure, which reduces weight and increases ring stiffness. The inner guide groove set inside the inner water pipe is installed according to the water flow direction to accelerate the flow speed of the water inside the inner water pipe, thereby realizing the noise reduction and flow guiding function.

[0014] (3) By setting an internal anti-corrosion structure, the advantages of this utility model are: when in use, the main body of the inner water pipe is a PVC layer, and an epoxy resin coating is applied to the inner wall of the inner water pipe, which can reduce the corrosion of the inner wall of the inner water pipe by substances inside the water and improve its high temperature resistance. A polyethylene layer is set on the outside of the inner water pipe to increase the resistance of the inner water pipe to mechanical damage, thereby realizing the internal anti-corrosion function. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a front view structural diagram of the present utility model;

[0017] Figure 3 This is a magnified front view of the buffer spring of this utility model;

[0018] Figure 4 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle.

[0019] In the diagram: 1. Outer pipe sleeve; 2. Guide marker; 3. Inner water pipe; 4. Support block; 5. Inner guide groove; 6. Epoxy coal tar coating; 7. Metal mesh; 8. EPDM rubber; 9. Epoxy resin coating; 10. PVC layer; 11. Polyethylene layer. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 An embodiment of this utility model is provided: a PVC drainage pipe with a protective structure, including an outer pipe sleeve 1, an EPDM rubber 8 inside the outer pipe sleeve 1, a metal mesh 7 inside the EPDM rubber 8, and an epoxy coal tar coating 6 on the outer surface of the metal mesh 7.

[0022] Metal mesh 7 is filled and wrapped inside the outer sleeve 1. EPDM rubber 8 is coated with epoxy coal tar coating 6 on the outside and EPDM rubber 8 is installed inside the outer sleeve 1.

[0023] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, by setting an external pressure-resistant protection structure, the main body of the outer sleeve 1 is made of EPDM rubber 8 during use. EPDM rubber 8 has heat resistance and anti-aging function. Metal mesh 7 is filled inside the EPDM rubber 8 to increase the impact resistance of the EPDM rubber 8. Epoxy coal tar coating 6 is coated on the outside of the outer sleeve 1 to increase the insulation and corrosion resistance of the outer sleeve 1 and increase the service life of the pipe body, thereby realizing the external pressure-resistant protection function.

[0024] The inner wall of the outer sleeve 1 is connected to a support block 4, the inner wall of the support block 4 is connected to an inner water pipe 3, the inner wall of the inner water pipe 3 is provided with an inner guide groove 5, and the outer wall of the outer sleeve 1 is provided with a guide mark 2.

[0025] The inner guide groove 5 is spirally arranged on the inner wall of the inner guide groove 5, and the outer pipe sleeve 1 is connected to the support block 4 through the inner water pipe 3. The support block 4 is provided with multiple sets.

[0026] Specifically, such as Figure 1 and Figure 2As shown, by setting a noise reduction and flow guiding structure, the outer sleeve 1 and the inner water pipe 3 are connected together by the support block 4 during use. The outer sleeve 1 forms a cavity outside the inner water pipe 3 through the support block 4. The cavity has a porous or honeycomb structure, which reduces weight and increases ring stiffness. The inner guide groove 5 set inside the inner water pipe 3 is installed according to the water flow direction to accelerate the flow speed of the water inside the inner water pipe 3, thereby realizing the noise reduction and flow guiding function.

[0027] The inner water pipe 3 is coated with an epoxy resin coating 9, and the inner water pipe 3 is provided with a PVC layer 10. The outer side of the PVC layer 10 is provided with a polyethylene layer 11.

[0028] Epoxy resin coating 9 and polyethylene layer 11 are respectively installed inside and outside the inner water pipe 3, and epoxy resin coating 9, PVC layer 10 and polyethylene layer 11 are connected in sequence.

[0029] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, by setting an internal anti-corrosion structure, the main body of the inner water pipe 3 is a PVC layer 10 during use, and an epoxy resin coating 9 is applied to the inner wall of the inner water pipe 3, which can reduce the corrosion of the inner wall of the inner water pipe 3 by substances inside the water and improve its high temperature resistance. A polyethylene layer 11 is set on the outside of the inner water pipe 3 to increase the resistance of the inner water pipe 3 to mechanical damage, thereby achieving the internal anti-corrosion function.

[0030] Working Principle: This utility model connects the outer sleeve 1 and the inner water pipe 3 together via a support block 4. The outer sleeve 1 forms a cavity outside the inner water pipe 3 via the support block 4. The cavity has a porous or honeycomb structure, reducing weight and increasing ring stiffness. The direction of the inner guide groove 5 inside the inner water pipe 3 can be seen through the guide mark 2 on the outside of the outer sleeve 1. The inner guide groove 5 inside the inner water pipe 3 accelerates the flow speed of water inside the inner water pipe 3. The main body of the outer sleeve 1 is made of EPDM rubber 8, which has heat resistance. For anti-aging function, a metal mesh 7 is filled inside the EPDM rubber 8 to increase the impact resistance of the EPDM rubber 8. An epoxy coal tar coating 6 is coated on the outside of the outer tube sleeve 1 to increase the insulation and corrosion resistance of the outer tube sleeve 1 and increase the service life of the pipe body. The main body of the inner water pipe 3 is a PVC layer 10. An epoxy resin coating 9 is coated on the inner wall of the inner water pipe 3 to reduce the corrosion of the inner wall of the inner water pipe 3 by substances inside the water and to improve high temperature resistance. A polyethylene layer 11 is set on the outside of the inner water pipe 3 to increase the resistance of the inner water pipe 3 to mechanical damage.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PVC drainage pipe with a protective structure, comprising an outer pipe sleeve (1), characterized in that: The outer sleeve (1) is provided with EPDM rubber (8) inside, and a metal mesh (7) is installed inside the EPDM rubber (8). The outer surface of the metal mesh (7) is coated with an epoxy coal tar coating (6).

2. A PVC drainage pipe with a protective structure according to claim 1, characterized in that: The metal mesh (7) is filled and wrapped inside the outer sleeve (1), the EPDM rubber (8) is coated with an epoxy coal tar coating (6) on the outside, and the EPDM rubber (8) is provided inside the outer sleeve (1).

3. A PVC drainage pipe with a protective structure according to claim 1, characterized in that: The inner wall of the outer sleeve (1) is connected to a support block (4), the inner wall of the support block (4) is connected to an inner water pipe (3), the inner wall of the inner water pipe (3) is provided with an inner guide groove (5), and the outer wall of the outer sleeve (1) is provided with a guide mark (2).

4. A PVC drainage pipe with a protective structure according to claim 3, characterized in that: The inner guide groove (5) is spirally arranged on the inner wall of the inner guide groove (5), and the outer tube sleeve (1) is connected to the support block (4) through the inner water pipe (3). The support block (4) is provided in multiple sets.

5. A PVC drainage pipe with a protective structure according to claim 3, characterized in that: The inner water pipe (3) is coated with an epoxy resin coating (9), and the inner water pipe (3) is provided with a PVC layer (10). The outer side of the PVC layer (10) is provided with a polyethylene layer (11).

6. A PVC drainage pipe with a protective structure according to claim 5, characterized in that: The epoxy resin coating (9) and the polyethylene layer (11) are respectively disposed inside and outside the inner water pipe (3), and the epoxy resin coating (9), PVC layer (10) and polyethylene layer (11) are connected in sequence.

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