A double reinforced steel wire mesh reinforced polyethylene composite pipe and a method for manufacturing the same

Abstract

The application discloses a double-reinforced steel wire mesh reinforced polyethylene composite pipe and a preparation method thereof. The pipe comprises a core pipe, a steel wire reinforcing layer, a PE layer, a PP protective layer and a self-adhesive reinforcing belt. The steel wire reinforcing layer is coated on the outer periphery of the core pipe and is fixed by a hot melt adhesive layer. The PE layer is uniformly coated on the outer periphery of the steel wire reinforcing layer and is fixedly connected therewith. The PP protective layer is uniformly coated on the outer periphery of the PE layer and abuts against the outer surface of the PE layer. The self-adhesive reinforcing belt is wound on the positions close to the two ends of the PP protective layer and is away from the end portions of the PP protective layer by a predetermined distance. The pipe has the advantages of simple structure, anti-aging, scratch prevention and convenient connection and construction.

Description

TECHNICAL FIELD

[0001] The present application relates to a steel wire mesh reinforced polyethylene composite pipe, in particular to a double reinforced steel wire mesh reinforced polyethylene composite pipe and a preparation method thereof. BACKGROUND

[0002] The steel wire mesh reinforced polyethylene composite pipe on the market is not resistant to ultraviolet rays, not resistant to scratches, and has high construction cost. The connection of the pipe material by the traditional process will cause instability at the connection, reduce the pressure bearing capacity, and increase the probability of pipe material accidents.

[0003] Therefore, how to provide a double reinforced steel wire mesh reinforced polyethylene composite pipe and a preparation method thereof which are sunscreen, scratch resistant, convenient to construct, and stable in connection is a problem to be solved by those skilled in the art. SUMMARY

[0004] Therefore, the present application provides a double reinforced steel wire mesh reinforced polyethylene composite pipe and a preparation method thereof, which are sunscreen, scratch resistant, and convenient to construct and connect.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a double reinforced steel wire mesh reinforced polyethylene composite pipe, comprising a core pipe, a steel wire reinforcing layer, a PE layer, a PP protective layer, and a self-adhesive reinforcing tape, wherein the core pipe is a PE material pipe, the steel wire reinforcing layer is wrapped around the outer periphery of the core pipe and is fixedly bonded by a hot melt adhesive layer, the PE layer is uniformly wrapped around the outer periphery of the steel wire reinforcing layer and is fixedly bonded therewith, the PP protective layer is uniformly wrapped around the outer periphery of the PE layer and abuts against the outer surface of the PE layer, and the self-adhesive reinforcing tape is wound around the two end positions close to the PP protective layer with a predetermined distance from the end of the PP protective layer.

[0006] The present application has the following advantages: the PP protective layer can prevent ultraviolet radiation and aging, and can also prevent scratches during transportation, affecting the stability of the composite pipe; the self-adhesive reinforcing tape at the edges of the two ends of the composite pipe enhances the stability and reliability of the pipe connection, increases the pressure bearing capacity, and the PP protective layer at the outer end of the self-adhesive reinforcing tape can be peeled off by a craft knife to expose the internal PE layer, which can be directly connected to the adjacent composite pipe by a hot melt pipe fitting, thereby improving the construction efficiency.

[0007] Preferably, the PE layer is fixedly bonded to the outer periphery of the steel wire reinforcing layer by a hot melt adhesive layer.

[0008] Preferably, the self-adhesive reinforcing tape is wound on the outside of the PP protective layer, or the self-adhesive reinforcing tape is wound on the inside of the PP protective layer.

[0009] Preferably, the thickness of the PP protective layer is 0.05-10 mm.

[0010] Preferably, the self-adhesive reinforcing tape is 10-20 cm away from the edge of the PP protective layer.

[0011] Preferably, the thickness of the PE layer is 2-20 mm.

[0012] Preferably, the self-adhesive reinforcing tape is a PE material tape, a glass fiber material tape, a PVC material tape, and a stainless steel material tape.

[0013] The application also discloses a preparation method of the double-reinforced steel wire mesh reinforced polyethylene composite pipe.

[0014] Step a: preparing PE raw materials for the core pipe, putting the PE raw materials into a core pipe extruder, extruding the raw materials into a core pipe mold by the core pipe extruder, and extruding the core pipe;

[0015] Step b: on the basis of step a, pulling the core pipe into a steel wire winding machine group by a pulling machine, and evenly coating high-strength steel wires on the outer periphery of the core pipe to form a steel wire reinforcing layer by the steel wire winding machine group;

[0016] Step c: on the basis of step b, heating the core pipe with the steel wire reinforcing layer to a predetermined temperature, then putting the core pipe into a hot melt adhesive extrusion mold, evenly coating the hot melt adhesive on the core pipe with the steel wire reinforcing layer, cooling the core pipe again by a wind ring, and then putting the core pipe into a PE layer extrusion mold, and extruding PE raw materials by a PE layer extruder to coat the outer periphery of the steel wire reinforcing layer through the PE layer extrusion mold;

[0017] Step d: on the basis of step c, pulling the completed steel wire mesh reinforced polyethylene composite pipe to a PP protective layer extruder, and coating the outer periphery of the outer PE layer of the steel wire mesh reinforced polyethylene composite pipe by PP protective layer raw materials under the action of a PP protective layer composite mold;

[0018] Step e: on the basis of step d, winding a self-adhesive reinforcing tape at a position with a predetermined distance from both ends of the PP protective layer;

[0019] Step f: on the basis of step e, performing laser typing, pulling and cutting, pipe grinding and sealing, and then packaging and storing.

[0020] Preferably, in step e, the self-adhesive reinforcing tape is wound on the outer side of the PP protective layer, and when wound on the outer side of the PP protective layer, the self-adhesive reinforcing tape can be directly wound by a machine on line, or the self-adhesive reinforcing tape is wound on the inner side of the PP protective layer, and then the PP protective layer is coated after the self-adhesive reinforcing tape is wound on the PE layer by manual winding.

[0021] Preferably, the core pipe in step a is put into a core pipe vacuum sizing forming machine to perform vacuum sizing and cooling forming. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structure section of a double reinforced steel wire mesh reinforced polyethylene composite pipe according to the present application Figure 1 ;

[0023] Figure 2 A structure section of a double reinforced steel wire mesh reinforced polyethylene composite pipe according to the present application Figure 2 ;

[0024] Figure 3 A flow chart of a double reinforced steel wire mesh reinforced polyethylene composite pipe according to the present application

[0025] Figure 4 A connection diagram of a double reinforced steel wire mesh reinforced polyethylene composite pipe according to the present application

[0026] 1, core pipe, 2, steel wire reinforcing layer, 3, PE layer, 4, PP protective layer, 5, self-adhesive reinforcing tape, 6, connecting pipe fitting. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0028] Reference is made to the drawings of the present application Figures 1 to 4 According to the double reinforced steel wire mesh reinforced polyethylene composite pipe according to the embodiments of the present application, the pipe comprises a core pipe 1, a steel wire reinforcing layer 2, a PE layer 3, a PP protective layer 4 and a self-adhesive reinforcing tape 5. The core pipe 1 is a PE material pipe. The steel wire reinforcing layer 2 is wrapped around the outer periphery of the core pipe 1 and is fixedly bonded by a hot melt adhesive layer. The PE layer 3 is uniformly wrapped around the outer periphery of the steel wire reinforcing layer 2 and is fixedly bonded therewith. The PP protective layer 4 is uniformly wrapped around the outer periphery of the PE layer 3 and abuts against the outer surface of the PE layer 3. The self-adhesive reinforcing tape 5 is wound around the two end positions close to the PP protective layer 4 and has a predetermined distance d from the end of the PP protective layer 4, i.e. a predetermined distance of the circumference along the axial direction of the core pipe. The distance d can be 10-20 cm, so as to increase the pressure bearing capacity of the connection position.

[0029] In some embodiments, the PE layer 3 is fixedly bonded to the outer periphery of the steel wire reinforcing layer 2 by the hot melt adhesive layer.

[0030] In some other embodiments, the self-adhesive reinforcing tape 5 can be wound on the outer side of the PP protective layer 4.

[0031] In some other embodiments, the self-adhesive reinforcing tape 5 is wound on the inner side of the PP protective layer 4.

[0032] Specifically, the thickness of the PP protective layer 4 is 3 mm.

[0033] More specifically, the predetermined distance d is 10 cm, facilitating the connection of the hot melt pipe, when the hot melt pipe is connected, the PP material of the end of the PP protective layer is peeled off by a craft knife for a predetermined distance, and the PP material of the outer end of the self-adhesive reinforcing tape is peeled off, the PE layer on the inside is exposed, the hot melt pipe is sleeved on the adjacent composite pipe and corresponds to the PE layer, the inner diameter of the hot melt pipe abuts against the outer surface of the PE layer, the hot melt pipe is powered on, and the hot melt pipe is integrated.

[0034] More specifically, the thickness of the PE layer 3 is 10 mm, preventing the heating temperature from affecting the steel wire reinforcing layer when the hot melt pipe is connected, and avoiding instability.

[0035] In other specific embodiments, the self-adhesive reinforcing tape can be any one of a PE material adhesive tape, a glass fiber material adhesive tape, a PVC material adhesive tape and a stainless steel material adhesive tape, or can be a PP ring, a PE ring, a PVC ring, a stainless steel ring and a glass steel ring with a certain width. The strength of the connection can be enhanced. The stability and pressure bearing capacity of the connection can be improved.

[0036] The application also discloses a preparation method of the double-reinforced steel wire mesh reinforced polyethylene composite pipe.

[0037] Step b: on the basis of step a, the core pipe is pulled into a steel wire winding machine group by a traction machine, and the steel wire winding machine group uniformly coats high-strength steel wires on the outer periphery of the core pipe to form a steel wire reinforcing layer.

[0038] Step c: on the basis of step b, the core pipe with the steel wire reinforcing layer is heated to a predetermined temperature, then enters a hot melt adhesive extrusion die, the hot melt adhesive is uniformly coated on the core pipe with the steel wire reinforcing layer, and then enters a PE layer extrusion die again after being cooled by an air ring, and PE raw materials are extruded by a PE layer extrusion machine and coated on the outer periphery of the steel wire reinforcing layer.

[0039] Step d: on the basis of step c, the completed steel wire mesh reinforced polyethylene composite pipe is pulled to a PP protective layer extruder, and under the action of a PP protective layer composite die, PP protective layer raw materials are coated on the outer periphery of the outer PE layer of the steel wire mesh reinforced polyethylene composite pipe.

[0040] Step e: on the basis of step d, a self-adhesive reinforcing tape is wound at a position with a predetermined distance from both ends of the PP protective layer.

[0041] Step f: on the basis of step e, laser typing, traction cutting, pipe grinding and sealing are performed, and then the product is packaged and stored.

[0042] Preferably, in step e, the self-adhesive reinforcing tape is wound on the outer side of the PP protective layer, and when the self-adhesive reinforcing tape is wound on the outer side of the PP protective layer, it is directly wound by a machine on line.

[0043] Or the self-adhesive reinforcing tape is wound on the inner side of the PP protective layer, and when the self-adhesive reinforcing tape is wound on the inner side of the PP protective layer, it is manually wound on the PE layer, and the PP protective layer is coated, and the PP protective layer protects the PE layer, and when the hot melt pipe fitting is connected, the PP protective layer at the end is peeled off using a craft knife, and the hot melt pipe fitting is directly connected, without scraping and polishing on the PE layer, which is convenient for construction.

[0044] Preferably, the core pipe in step a enters a core pipe vacuum sizing forming machine set to perform vacuum sizing and cooling forming.

[0045] The double-reinforced steel wire mesh reinforced polyethylene composite pipe of the application solves the problems of traditional polyethylene composite pipes, such as not being resistant to scratching, not being resistant to ultraviolet radiation, and not being resistant to aging, and prolongs the service life of the reinforced composite pipe, avoids the process of workers needing to polish the pipe material to a pipe diameter less than or equal to the inner diameter of the pipe fitting at the pipe butt joint to ensure that the pipe butt joint surface is fresh, thereby connecting reliably, reduces the high construction cost, easily controls the connection quality, and shortens the construction time.

[0046] Most of the composite pipes connected by traditional processes in the market will have a bulge phenomenon at the pipe fitting and pipe connection. The reason is that the electric hot melt pipe fitting connection needs to be heated to about 200° of the polyethylene melting point to hot melt the surface of the composite pipe and the inner surface of the pipe fitting, so as to connect the hot melt pipe fitting and the composite pipe. However, the surface in contact with the composite pipe is also heated at the same time, which will melt the steel wire reinforcing layer inside the composite pipe at this position, and the steel wire will slip due to the tension, thereby reducing the performance of the pipe at this hot melt position, and becoming the weakest point of the composite pipe that is most likely to burst after pressure. The self-adhesive reinforcing tape wound at the connection position can increase the stability of the connection position and improve the pressure bearing capacity of the connection position of the composite pipe. The PP protective layer can prevent oxidation and pollution of the PE layer, and the PP protective layer at the outer end of the self-adhesive reinforcing tape is peeled off and directly inserted into the hot melt pipe fitting for connection during connection construction, thereby improving the connection efficiency.

[0047] For the device and use method disclosed in the embodiments, since they correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant part is described in the method part.

[0048] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double reinforced wire mesh polyethylene composite pipe, characterized by, The utility model relates to a kind of PE pipe, including core pipe (1), steel wire reinforcing layer (2), PE layer (3), PP protective layer (4) and self-adhesive reinforcing tape (5), the core pipe (1) is PE material pipe, the steel wire reinforcing layer (2) is covered in the outer periphery of the core pipe (1) and is fixed by hot melt adhesive layer bonding;The PE layer (3) is evenly covered in the outer periphery of the steel wire reinforcing layer (2) and is fixedly bonded with it;The PP protective layer (4) is evenly covered in the outer periphery of the PE layer (3) and is abutted with the outer surface of the PE layer (3);The self-adhesive reinforcing tape (5) is wound in the both end position close to the PP protective layer (4) and its distance from the end of the PP protective layer (4) has predetermined distance;The predetermined distance of the self-adhesive reinforcing tape (5) from PP protective layer edge end is 10~20cm;The self-adhesive reinforcing tape (5) is wound in the outside of the PP protective layer (4), or the self-adhesive reinforcing tape (5) is wound in the inside of the PP protective layer (4).

2. A double reinforced wire mesh polyethylene composite pipe as claimed in claim 1, wherein, The PE layer (3) is fixed by hot melt adhesive layer on the outer periphery of the steel wire reinforcing layer (2).

3. A double reinforced wire mesh polyethylene composite pipe as claimed in claim 1, wherein, The thickness of the PP protective layer (4) is 0.05~10mm.

4. A double reinforced wire mesh polyethylene composite pipe as claimed in claim 1, wherein, The thickness of the PE layer (3) is 2~20mm.

5. A double reinforced wire mesh polyethylene composite pipe as claimed in claim 1, wherein, The self-adhesive reinforcing tape (5) is PE material tape adhesive tape, glass fiber material tape adhesive tape, PVC material tape adhesive tape and stainless steel material tape adhesive tape.

6. A method of producing a double reinforced steel wire mesh polyethylene composite pipe according to any one of claims 1 to 5, characterized in that, The utility model includes the following steps: Step a: prepare PE raw material for core pipe, put into core pipe extruder, core pipe extruder extrudes raw material into core pipe mold, extrusion molding core pipe, while hot melt adhesive extruder extrudes hot melt adhesive into core pipe mold;Make the outer layer of core pipe be covered with hot melt adhesive layer; Step b: on the basis of step a, the core pipe with hot melt adhesive layer is passed through traction machine into steel wire winding machine group, and the steel wire winding machine group uniformly bonds and covers high-strength steel wire on the outer periphery of hot melt adhesive layer to form steel wire reinforcing layer; Step c: on the basis of step b, the core pipe with steel wire reinforcing layer is heated to predetermined temperature, and then enters PE layer extruder, and the PE layer extruder extrudes PE raw material through PE layer mold to cover the outer periphery of steel wire reinforcing layer, while adhesive material extruder extrudes adhesive material into PE layer mold;Make PE layer be fixedly bonded on the outer periphery of the steel wire reinforcing layer; Step d: on the basis of step c, the core pipe with PE layer is pulled to PP protective layer extruder, and under the action of PP protective layer composite mold, PP protective layer raw material is covered on the outer periphery side of PE layer; Step e: on the basis of step d, self-adhesive reinforcing tape is wound at a predetermined distance position from both ends of PP protective layer; Step f: on the basis of step e, laser typing, traction cutting, pipe grinding and sealing, and then packaging into warehouse.

7. A method of manufacturing a double reinforced steel wire mesh polyethylene composite pipe according to claim 6, characterized in that, In the step e, the self-adhesive reinforcing tape is wound on the outside of the PP protective layer, or the self-adhesive reinforcing tape is wound on the inside of the PP protective layer.

8. A method of manufacturing a double reinforced steel wire mesh polyethylene composite pipe according to claim 6, characterized in that, The core pipe of the step a enters core pipe vacuum sizing forming machine group and is vacuum sized, and is cooled and formed.

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