Anti-freezing and cold-resistant PVC (polyvinyl chloride) pipe

Abstract

The utility model discloses an anti-freezing and cold-resistant PVC (polyvinyl chloride) pipe, which comprises PVC pipe bodies, adjacent PVC pipe bodies are connected through a connecting pipe, a sealing sleeve is arranged at a connecting seam of the adjacent PVC pipe bodies, a cold-proof sleeve is nested on the PVC pipe bodies, and a fixing mechanism for fixing the cold-proof sleeve is arranged at the sealing sleeve. According to the anti-freezing and cold-resistant PVC pipe with the structure, the anti-freezing and cold-resistant capacity of the PVC pipe can be enhanced through the heat preservation layer in the cold-proof sleeve, the fixing mechanism is simple in structure, the cold-proof sleeve can be fixed to the PVC pipe, and the fixing mechanism can further enable the adjacent PVC pipes to be connected more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipes, in particular to a PVC pipe with antifreeze and cold resistance. Background Art

[0002] PVC pipe, also known as rigid polyvinyl chloride pipe, is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and is extruded by hot pressing. It is the earliest plastic pipe to be developed and applied. PVC-U pipe has strong corrosion resistance, easy bonding, low price and hard texture, but due to the leakage of PVC-U monomer and additives, it is only suitable for water supply systems with a conveying temperature not exceeding 45°C. Plastic pipes are used for drainage, wastewater, chemicals, heating liquid and cooling liquid, food, ultra-pure liquid, mud, gas, compressed air and vacuum system applications. PVC-O pipe, Chinese name biaxially oriented polyvinyl chloride, is the latest evolution of PVC pipe. The pipe is manufactured by a special orientation processing technology. The PVC-U pipe produced by extrusion is stretched axially and radially, so that the PVC long-chain molecules in the pipe are arranged regularly in the biaxial direction, and a new type of PVC pipe with high strength, high toughness, high impact resistance and fatigue resistance is obtained.

[0003] When PVC pipes are used, general PVC pipes have average performance in terms of anti-deformation performance and cold resistance. When the PVC pipes are at low temperatures, they are easily damaged, resulting in a shortened service life of the PVC pipes. In the prior art, patent CN217583508U discloses a PVC pipe with antifreeze and cold resistance, comprising a PVC pipe body, the inner wall of the PVC pipe body is provided with a tube cavity, the inner wall of the PVC pipe body is fixedly connected with a steel plate layer, the outer wall of the steel plate layer is fixedly connected with a polyethylene plastic plate layer, the outer wall of the polyethylene plastic plate layer is fixedly connected with an anti-deformation layer, the outer wall of the PVC pipe body is movably connected with a cold-resistant sleeve, and the inner wall of the cold-resistant sleeve is fixedly connected with a sponge layer.

[0004] This kind of antifreeze and cold-resistant PVC pipe needs to fix the cold-resistant sleeve, but its fixing structure is complicated, the internal components are easily damaged, and it is difficult to repair after damage, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a PVC pipe with antifreeze and cold resistance, so as to solve the problem that the structure of the fixed cold-proof cover of the PVC pipe in the above-mentioned background technology is complicated and easy to be damaged.

[0006] To achieve the above-mentioned purpose, the utility model provides a PVC pipe with antifreeze and cold resistance, including a PVC pipe body, adjacent PVC pipe bodies are connected by connecting pipes, a sealing sleeve is arranged at the connecting seam of adjacent PVC pipe bodies, a cold-proof sleeve is nested on the PVC pipe body, and a fixing mechanism for fixing the cold-proof sleeve is arranged at the sealing sleeve;

[0007] The PVC pipe body comprises a polyvinyl chloride sheet, the polyvinyl chloride sheet is arranged on the innermost layer of the PVC pipe body, the outer layer of the polyvinyl chloride sheet is provided with a steel plate layer, and the outer layer of the steel plate layer is provided with an anti-deformation layer;

[0008] The cold-proof cover comprises a foam plastic layer 1 and a foam plastic layer 2, wherein the foam plastic layer 1 is arranged on the outer surface of the anti-deformation layer, the foam plastic layer 2 is arranged on the outer layer of the foam plastic layer 1, and a heat-insulating layer is sandwiched between the foam plastic layer 1 and the foam plastic layer 2;

[0009] The fixing mechanism comprises an upper fixing sleeve and a lower fixing sleeve. The two ends of the upper fixing sleeve are provided with a fixing plate 1, and the two ends of the lower fixing sleeve are provided with a fixing plate 2. The fixing plate 1 and the fixing plate 2 are locked and connected by a bolt structure.

[0010] Preferably, adjacent PVC pipe bodies are connected by threaded locking.

[0011] Preferably, the inner layer of the polyvinyl chloride plate is provided with a Teflon coating.

[0012] Preferably, the outermost layer of the cold-proof cover is provided with a waterproof layer.

[0013] Preferably, the thermal insulation layer is configured as a thermal insulation cotton layer.

[0014] Preferably, the bolt structure includes a screw rod and a nut, the upper end of the screw rod is connected to the fixing plate one through a gasket one, the lower end of the screw rod is locked and connected to the nut, and the nut is connected to the fixing plate two through a gasket two.

[0015] Therefore, the utility model adopts the antifreeze and cold-resistant PVC pipe of the above structure, and the insulation layer of the cold-proof cover can enhance the cold-proof and cold-resistant function of the PVC pipe, the waterproof layer can enhance the waterproof ability of the PVC pipe, and the Teflon coating can enhance the acid and alkali resistance of the PVC pipe, thereby increasing the service life of the PVC pipe. The sealing cover can enhance the sealing of the joints of adjacent PVC pipes, and the two fixing covers can not only firmly connect the two adjacent PVC pipes, but also fix the cold-proof cover on the PVC pipe, which is more convenient to use. The fixing mechanism of the utility model is simple in structure, easy to use, easy to manufacture, and not easy to damage.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a PVC pipe material with antifreeze and cold resistance according to the utility model;

[0018] Figure 2 This is a cross-sectional view of a PVC pipe according to an embodiment of the utility model that is antifreeze and cold-resistant;

[0019] Figure 3 The utility model is a side view of a PVC pipe with antifreeze and cold-resistant properties.

[0020] Reference numerals

[0021] 1. PVC pipe body; 2. Connecting pipe; 3. Sealing sleeve; 4. PVC board; 5. Steel plate layer; 6. Anti-deformation layer; 7. Teflon coating; 8. Foam plastic layer one; 9. Foam plastic layer two; 10. Insulation layer; 11. Waterproof layer; 12. Cold-proof sleeve; 13. Upper fixing sleeve; 14. Lower fixing sleeve; 15. Fixing plate one; 16. Fixing plate two; 17. Gasket one; 18. Gasket two; 19. Screw; 20. Nut. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The terms "set", "install" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a PVC pipe material with antifreeze and cold resistance according to the utility model; Figure 2 This is a cross-sectional view of a PVC pipe according to an embodiment of the utility model that is antifreeze and cold-resistant; Figure 3 The utility model is a side view of a PVC pipe with antifreeze and cold-resistant properties.

[0026] As shown in the figure, the utility model discloses a PVC pipe material with antifreeze and cold resistance, comprising a PVC pipe body 1, and adjacent PVC pipe bodies 1 are connected by a connecting pipe 2. Two adjacent PVC pipe bodies 1, one PVC pipe body 1 is connected with a connecting pipe 2, and the connecting pipe 2 is provided with an external thread, and the pipe body of the other PVC pipe body 1 is provided with an internal thread, and the adjacent PVC pipe bodies 1 are connected by thread locking. A sealing sleeve 3 is provided at the connection seam of the PVC pipe body 1, and the sealing sleeve 3 is made of rubber material. The sealing sleeve 3 can strengthen the sealing of the connection seam of adjacent PVC pipe bodies 1 to prevent liquid leakage. The PVC pipe body 1 includes a polyvinyl chloride plate 4, and the polyvinyl chloride plate 4 is arranged at the innermost layer of the PVC pipe body 1, and the outer layer of the polyvinyl chloride plate 4 is provided with a steel plate layer 5, and the outer layer of the steel plate layer 5 is provided with an anti-deformation layer 6, and the steel plate layer 5 and the anti-deformation layer 6 can make the PVC pipe body 1 more resistant to deformation, and the anti-deformation layer 6 adopts the existing structure. The inner layer of the polyvinyl chloride plate 4 is provided with a Teflon coating 7 , and the Teflon coating 7 can improve the acid and alkali resistance of the PVC pipe body 1 .

[0027] A cold-proof cover 12 is embedded on the PVC pipe body 1. The cold-proof cover 12 includes a foam plastic layer 18 and a foam plastic layer 29, and the foam plastic layer 18 is arranged on the outer surface of the anti-deformation layer 6. The foam plastic layer 29 is arranged on the outer layer of the foam plastic layer 18, and a heat-insulating layer 10 is sandwiched between the foam plastic layer 18 and the foam plastic layer 29. The heat-insulating layer 10 is arranged as a heat-insulating cotton layer, and the antifreeze and cold-resistant ability of the PVC pipe body 1 can be enhanced by the heat-insulating cotton layer. The outermost layer of the cold-proof cover 12 is provided with a waterproof layer 11, and the waterproof layer 11 adopts an existing waterproof coating, and the waterproof layer 11 can enhance the waterproof ability of the cold-proof cover 12.

[0028] The sealing sleeve 3 is provided with a fixing mechanism for fixing the cold-proof sleeve 12. The fixing mechanism includes an upper fixing sleeve 13 and a lower fixing sleeve 14. The upper fixing sleeve 13 is provided with a fixing plate 15 at both ends, and the lower fixing sleeve 14 is provided with a fixing plate 2 16 at both ends. The fixing plate 15 and the fixing plate 2 16 are locked and connected by a bolt structure. The bolt structure includes a screw rod 19 and a nut 20. The upper end of the screw rod 19 is connected to the fixing plate 15 through a gasket 17, and the lower end of the screw rod 19 is locked and connected to the nut 20. The nut 20 is connected to the fixing plate 2 16 through a gasket 2 18.

[0029] When in use, the connecting pipe 2 of one PVC pipe body 1 is tightened with the adjacent PVC pipe body 1, and the sealing sleeve 3 is sleeved on the connecting seam of the adjacent PVC pipe bodies 1. Then the upper fixing sleeve 13 and the lower fixing sleeve 14 are sleeved on the sealing sleeve 3 of the PVC pipe body 1, and the bolts on the fixing plate 1 15 and the fixing plate 2 16 are locked.

[0030] Therefore, the utility model adopts the above-mentioned structure of antifreeze and cold-resistant PVC pipe. The insulation layer in the antifreeze cover can enhance the antifreeze and cold-resistant ability of the PVC pipe. The fixing mechanism has a simple structure and can fix the antifreeze cover on the PVC pipe. The fixing mechanism can also make the connection between adjacent PVC pipes more stable.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A PVC pipe with antifreeze and cold resistance, characterized by: It comprises a PVC pipe body, adjacent PVC pipe bodies are connected by connecting pipes, a sealing sleeve is arranged at the connecting seam of adjacent PVC pipe bodies, a cold-proof sleeve is nested on the PVC pipe body, and a fixing mechanism for fixing the cold-proof sleeve is arranged at the sealing sleeve; The PVC pipe body comprises a polyvinyl chloride sheet, the polyvinyl chloride sheet is arranged on the innermost layer of the PVC pipe body, the outer layer of the polyvinyl chloride sheet is provided with a steel plate layer, and the outer layer of the steel plate layer is provided with an anti-deformation layer; The cold-proof cover comprises a foam plastic layer 1 and a foam plastic layer 2, wherein the foam plastic layer 1 is arranged on the outer surface of the anti-deformation layer, the foam plastic layer 2 is arranged on the outer layer of the foam plastic layer 1, and a heat-insulating layer is sandwiched between the foam plastic layer 1 and the foam plastic layer 2; The fixing mechanism comprises an upper fixing sleeve and a lower fixing sleeve. The two ends of the upper fixing sleeve are provided with a fixing plate 1, and the two ends of the lower fixing sleeve are provided with a fixing plate 2. The fixing plate 1 and the fixing plate 2 are locked and connected by a bolt structure.

2. The antifreeze and cold-resistant PVC pipe according to claim 1, characterized in that: Adjacent PVC pipe bodies are connected by thread locking.

3. The antifreeze and cold-resistant PVC pipe according to claim 1, characterized in that: The inner layer of the polyvinyl chloride sheet is provided with a Teflon coating.

4. The antifreeze and cold-resistant PVC pipe according to claim 1, characterized in that: The outermost layer of the cold-proof cover is provided with a waterproof layer.

5. The antifreeze and cold-resistant PVC pipe according to claim 1, characterized in that: The thermal insulation layer is arranged as a thermal insulation cotton layer.

6. The antifreeze and cold-resistant PVC pipe according to claim 1, characterized in that: The bolt structure includes a screw rod and a nut. The upper end of the screw rod is connected to a fixing plate one through a gasket one, the lower end of the screw rod is locked and connected to the nut, and the nut is connected to a fixing plate two through a gasket two.

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