Low-temperature-resistant anti-cracking PPR water supply composite pipe

Abstract

The utility model relates to a low-temperature-resistant anti-cracking PPR (polypropylene random copolymer) water supply composite pipe, which belongs to the technical field of PP-R composite pipes and comprises an annular plate, a protective component used for protecting the PPR water supply composite pipe is mounted in the annular plate, and a splicing component used for splicing is mounted on the outer side of the annular plate. And the protection assembly comprises a protection layer fixed in the annular plate, polyurethane foam glue is fixed in the protection layer, and a metal binding wire net layer is fixed in the polyurethane foam glue. According to the low-temperature-resistant anti-cracking PPR water supply composite pipe, the pipe body can be effectively protected, when the temperature is low, the situation that the PPR water supply composite pipe is frozen to crack due to low temperature can be effectively reduced, and the situation that the pipe is damaged due to external force in the transportation or installation process in the use process can also be effectively reduced; and the sealing effect of the joint position during butt joint of the PPR water supply composite pipe can be ensured, and the practicability of the low-temperature-resistant anti-cracking PPR water supply composite pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PP-R composite pipes, in particular to a low-temperature resistant and crack-resistant PPR water supply composite pipe. Background Art

[0002] Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, PPR pipes have the advantages of energy saving and material saving, environmental protection, light weight and high strength, corrosion resistance, smooth inner wall and no scaling, easy construction and maintenance, and long service life. They are widely used in building water supply and drainage, urban and rural water supply and drainage, city gas, electricity and optical cable sheathing, industrial fluid transportation, agricultural irrigation and other construction, municipal, industrial and agricultural fields.

[0003] The existing PPR water supply composite pipes generally do not have effective protection for the pipe body. In actual use, when the temperature is low, the PPR water supply composite pipes will face the risk of freezing and cracking. In addition, the pipes are prone to damage due to external forces during transportation or installation in winter, which may cause pipe breakage during use, resulting in the PPR water supply composite pipes failing to achieve the expected use effect, reducing the practicality of the existing PPR water supply composite pipes. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a low-temperature resistant and crack-resistant PPR water supply composite pipe, which has the advantages of making the PPR water supply composite pipe have low-temperature resistance and crack-resistant properties, and solves the problem of low practicality of the existing low-temperature resistant and crack-resistant PPR water supply composite pipe.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of making the PPR water supply composite pipe have low temperature resistance and crack resistance, the utility model provides the following technical solutions: a low temperature resistant and crack resistant PPR water supply composite pipe, comprising an annular plate, a protective component for protecting the PPR water supply composite pipe is installed inside the annular plate, and a splicing component for splicing is installed outside the annular plate;

[0008] The protective component includes a protective layer fixed to the inside of the annular plate, polyurethane foam glue is fixed to the inside of the protective layer, a metal wire mesh layer is fixed to the inside of the polyurethane foam glue, a glass fiber layer is fixed to the inside of the metal wire mesh layer, an insulation layer is fixed to the inside of the glass fiber layer, a hot melt adhesive layer is fixed to the inside of the insulation layer, a waterproof layer is fixed to the inside of the hot melt adhesive layer, and a PPR pipe core is fixed to the inside of the waterproof layer.

[0009] Furthermore, the splicing assembly includes an annular block fixed on the outside of the annular plate, a plurality of through holes are opened on the outside of the annular block, a connector is slidably connected to the outside of the protective layer, a filter is fixed inside the connector, and a sealing layer is fixed on the left side of the connector.

[0010] Furthermore, the sealing layer is a waterproof adhesive layer, and the annular plate is bonded to the connector via the sealing layer.

[0011] Furthermore, the diameter of the filter screen is equal to the inner diameter of the connector, and the outer diameter of the annular plate is equal to the outer diameter of the connector.

[0012] Furthermore, the outer diameter of the protective layer is equal to the inner diameter of the connector, and the inner diameter of the connector is equal to the inner diameter of the annular plate.

[0013] Furthermore, the inner diameter of the annular block is equal to the outer diameter of the connector, and the diameter of the through hole is equal to the length of the sealing layer.

[0014] Furthermore, the protective layer is a polyvinyl chloride layer, the thermal insulation layer is a foamed cement layer, and the waterproof layer is a polyethylene layer.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a low-temperature resistant and crack-resistant PPR water supply composite pipe, which has the following beneficial effects:

[0017] The low-temperature resistant and crack-resistant PPR water-supply composite pipe can effectively protect the pipe body during actual use through the coordinated use of the annular plate, the protective component and the splicing component. When the temperature is low, it can effectively reduce the occurrence of freezing and cracking of the PPR water-supply composite pipe due to low temperature, and can also effectively reduce the occurrence of pipe breakage during use due to external force damage to the pipe during transportation or installation. At the same time, it can also ensure the sealing effect of the joint position of the PPR water-supply composite pipe when it is connected, thereby improving the practicality of the low-temperature resistant and crack-resistant PPR water-supply composite pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a three-dimensional schematic diagram of the PPR tube core connection structure in the structure of the utility model;

[0020] Figure 3 It is a front cross-sectional view of the structure of the utility model.

[0021] In the figure: 1 annular plate, 200 protective component, 201 protective layer, 202 polyurethane foam glue, 203 metal wire mesh layer, 204 glass fiber layer, 205 insulation layer, 206 hot melt adhesive layer, 207 waterproof layer, 208 PPR pipe core, 300 splicing component, 301 annular block, 302 through hole, 303 connector, 304 filter screen, 305 sealing layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a low temperature resistant and crack resistant PPR water supply composite pipe, comprising an annular plate 1, a protective component 200 for protecting the PPR water supply composite pipe is installed inside the annular plate 1, and a splicing component 300 for splicing is installed outside the annular plate 1;

[0024] Through the coordinated use of the annular plate 1, the protective component 200 and the splicing component 300, the pipe body can be effectively protected during actual use. When the temperature is low, the occurrence of freezing and cracking of the PPR water supply composite pipe due to low temperature can be effectively reduced. It can also effectively reduce the occurrence of pipe breakage during use due to external force damage to the pipe during transportation or installation. At the same time, it can also ensure the sealing effect of the joint position of the PPR water supply composite pipe when docking, thereby improving the practicality of the low-temperature resistant and crack-resistant PPR water supply composite pipe.

[0025] In this embodiment, the protection component 200 is a structure for protecting the PPR water supply composite pipe.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the protection component 200 includes a protection layer 201 fixed to the inside of the annular plate 1, a polyurethane foam adhesive 202 is fixed to the inside of the protection layer 201, a metal wire mesh layer 203 is fixed to the inside of the polyurethane foam adhesive 202, a glass fiber layer 204 is fixed to the inside of the metal wire mesh layer 203, an insulation layer 205 is fixed to the inside of the glass fiber layer 204, a hot melt adhesive layer 206 is fixed to the inside of the insulation layer 205, a waterproof layer 207 is fixed to the inside of the hot melt adhesive layer 206, and a PPR pipe core 208 is fixed to the inside of the waterproof layer 207.

[0027] It should be noted that the protective layer 201 is a polyvinyl chloride layer, which has good weather resistance and wear resistance, thereby effectively ensuring the wear resistance of the PPR water supply composite pipe in different climates. The insulation layer 205 is a foamed cement layer. Foamed cement is a new type of lightweight thermal insulation material, which is characterized by the formation of closed foam pores inside, thereby making it lightweight and thermally insulating. It has good thermal insulation performance and stable physical properties, so it is widely used in thermal insulation and heat insulation of buildings. In addition, foamed cement also has the characteristics of good sound insulation, fire resistance, and durability, and the polyurethane foam glue 202 also has mobile thermal insulation after curing, so that a good thermal insulation and antifreeze effect can be achieved through the combined use of the insulation layer 205 and the polyurethane foam glue 202.

[0028] In addition, the waterproof layer 207 is a polyethylene layer. Polyethylene can effectively prevent water penetration, so it is often used in waterproof materials. It also has excellent chemical corrosion resistance and can resist the erosion of acids, alkalis and chemicals. Its durability and stability enable it to maintain a waterproof effect during long-term use, thereby effectively avoiding corrosion of the PPR tube core 208 during use and increasing the service life of the PPR tube core 208.

[0029] In this embodiment, the splicing assembly 300 is a structure used to splice PPR water supply composite pipes.

[0030] like Figure 1 and Figure 3 As shown, the splicing assembly 300 includes an annular block 301 fixed on the outer side of the annular plate 1, a plurality of through holes 302 are opened on the outer side of the annular block 301, a connector 303 is slidably connected to the outer side of the protective layer 201, a filter screen 304 is fixed inside the connector 303, and a sealing layer 305 is fixed on the left side of the connector 303.

[0031] It should be noted that the sealing layer 305 is a waterproof adhesive layer, and the annular plate 1 is bonded to the connector 303 through the sealing layer 305, ensuring that the gap between the annular plate 1 and the connector 303 can be sealed by the sealing layer 305, thereby ensuring the sealing of the connection.

[0032] In addition, the diameter of the filter screen 304 is equal to the inner diameter of the connector 303, so that the filter screen 304 is fixed more stably in the connector 303. The outer diameter of the annular plate 1 is equal to the outer diameter of the connector 303, and the inner diameter of the connector 303 is equal to the inner diameter of the annular plate 1, so that the PPR water supply composite pipe can be spliced ​​more conveniently and stably under the action of the annular plate 1 and the connector 303.

[0033] In addition, the outer diameter of the protective layer 201 is equal to the inner diameter of the connector 303, ensuring that the PPR water supply composite pipe can be effectively spliced ​​through the connector 303, and the diameter of the through hole 302 is equal to the length of the sealing layer 305, ensuring that the waterproof glue can be effectively injected into the gap between the annular plate 1 and the connector 303 through the through hole 302 to form a sealing layer 305.

[0034] The working principle of the above embodiment is:

[0035] When in use, the PPR water supply composite pipe is first protected by the protective layer 201, thereby improving the wear-resistant layer of the PPR water supply composite pipe, and then the metal wire mesh layer 203 and the glass fiber layer 204 can effectively improve the strength of the PPR water supply composite pipe, and the glass fiber layer 204 can also improve the flame retardancy of the PPR water supply composite pipe, thereby better protecting the PPR pipe core 208, and then the polyurethane foam glue 202, the metal wire mesh layer 203 and the insulation layer 205 cooperate to effectively reduce the transfer of heat, thereby playing an anti-freezing and warming role, thereby effectively reducing the occurrence of freezing and cracking of the PPR water supply composite pipe when the temperature is low, and when the PPR water supply composite pipe needs to be spliced, first put the PPR pipe core 208 into the connector 303, make the connector 303 contact with the annular plate 1, and then inject waterproof glue into the gap between the connector 303 and the annular plate 1 through the through hole 302 to form a sealing layer 305, thereby achieving better connection and sealing effects.

[0036] Compared with the prior art, the low-temperature resistant and crack-resistant PPR water supply composite pipe, through the coordinated use of the annular plate 1, the protective component 200 and the splicing component 300, can effectively protect the pipe body during actual use. When the temperature is low, it can effectively reduce the occurrence of freezing and cracking of the PPR water supply composite pipe due to low temperature, and can also effectively reduce the occurrence of pipe breakage during use due to external force damage to the pipe during transportation or installation. At the same time, it can also ensure the sealing effect of the joint position of the PPR water supply composite pipe when docking, thereby improving the practicality of the low-temperature resistant and crack-resistant PPR water supply composite pipe and solving the problem of low practicality of the existing low-temperature resistant and crack-resistant PPR water supply composite pipe.

[0037] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A low temperature resistant and crack resistant PPR composite water supply pipe, comprising an annular plate (1), characterized in that: A protection component (200) for protecting the PPR water supply composite pipe is installed inside the annular plate (1), and a splicing component (300) for splicing is installed outside the annular plate (1); The protective component (200) comprises a protective layer (201) fixed inside the annular plate (1), a polyurethane foam adhesive (202) being fixed inside the protective layer (201), a metal wire mesh layer (203) being fixed inside the polyurethane foam adhesive (202), a glass fiber layer (204) being fixed inside the metal wire mesh layer (203), a thermal insulation layer (205) being fixed inside the glass fiber layer (204), a hot melt adhesive layer (206) being fixed inside the thermal insulation layer (205), a waterproof layer (207) being fixed inside the hot melt adhesive layer (206), and a PPR pipe core (208) being fixed inside the waterproof layer (207).

2. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 1, characterized in that: The splicing assembly (300) comprises an annular block (301) fixed on the outer side of the annular plate (1), a plurality of through holes (302) are provided on the outer side of the annular block (301), a connector (303) is slidably connected to the outer side of the protective layer (201), a filter screen (304) is fixed inside the connector (303), and a sealing layer (305) is fixed on the left side of the connector (303).

3. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 2 is characterized by: The sealing layer (305) is a waterproof adhesive layer, and the annular plate (1) is bonded to the connecting head (303) via the sealing layer (305).

4. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 2, characterized in that: The diameter of the filter screen (304) is equal to the inner diameter of the connector (303), and the outer diameter of the annular plate (1) is equal to the outer diameter of the connector (303).

5. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 2, characterized in that: The outer diameter of the protective layer (201) is equal to the inner diameter of the connecting head (303), and the inner diameter of the connecting head (303) is equal to the inner diameter of the annular plate (1).

6. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 2, characterized in that: The inner diameter of the annular block (301) is equal to the outer diameter of the connector (303), and the diameter of the through hole (302) is equal to the length of the sealing layer (305).

7. The low temperature resistant and crack resistant PPR composite water supply pipe according to claim 1, characterized in that: The protective layer (201) is a polyvinyl chloride layer, the thermal insulation layer (205) is a foamed cement layer, and the waterproof layer (207) is a polyethylene layer.

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