High-density polyethylene (HDPE) double-color composite steady-state pipe for water supply

Abstract

The utility model discloses a high-density polyethylene (HDPE) bicolor composite steady-state pipe for water supply, which comprises an inner pipe, a winding layer, a steel wire mesh belt and an outer protective layer, the inner pipe is made of new high-density polyethylene, and the outer protective layer is made of modified high-density polyethylene; wherein the winding layer is formed by spirally winding a high-density polyethylene belt with a rectangular groove in the middle of the outer surface on the surface of the outer protection layer, the steel wire mesh belt is equal to the rectangular groove in width and thickness and is embedded in the rectangular groove, and the outer protection layer is located outside the winding layer. Different from a double-layer composite structure in the prior art, the three-layer composite structure is adopted, the steel wire mesh belt is embedded in the groove of the high-density polyethylene belt, then the winding layer is formed by spirally winding the steel wire mesh belt on the surface of the inner pipe, firstly, the steel wire mesh does not need to be machined into a long cylinder shape, the net sleeving procedure is omitted, and the cost is reduced. A single longer pipeline can be continuously produced, the inner pipe and the outer protective layer are directly connected through the winding layer, the hot melting strength is higher, and compared with a double-layer steel wire mesh clamping structure, the strength is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a straight polymer pipe material technical field, especially to a high density polyethylene HDPE double -color composite steady pipe for water supply. BACKGROUND

[0002] The double -color composite steady pipe is a kind of reinforced pipe, which is made of different materials for inner and outer layers and has a steel wire mesh sleeve in the middle, and when producing, the inner pipe is extruded, then the steel wire mesh sleeve is sleeved, the bonding resin is brushed, and finally the outer pipe is extruded, and the inner pipe, the steel wire mesh sleeve and the outer pipe are combined into one by hot melting. First, the steel wire mesh sleeve is three-dimensional, so it cannot be curled, which limits the length of the pipe and makes it difficult to produce a pipe with a large continuous length. Secondly, the sleeving process is slow, which greatly affects the production progress. Moreover, since the materials of the inner and outer layers are quite different and are directly sandwiched in the middle, the bonding strength after hot melting will be affected to a certain extent. SUMMARY

[0003] The utility model provides a high density polyethylene HDPE double -color composite steady pipe for water supply to solve the technical problems in the above background technique.

[0004] The technical scheme of the utility model provides:

[0005] A high density polyethylene HDPE double -color composite steady pipe for water supply includes an inner pipe, a winding layer, a steel wire mesh belt and an outer protective layer. The inner pipe is made of high density polyethylene new material, and the outer protective layer is made of modified high density polyethylene. The winding layer is made by spirally winding a high density polyethylene belt with a rectangular groove in the middle of the outer surface on the surface of the outer protective layer. The steel wire mesh belt is equal in width and thickness to the rectangular groove and is embedded in the rectangular groove. The outer protective layer is located outside the winding layer.

[0006] Further, the inner and outer surfaces of the winding layer and the upper and lower surfaces of the steel wire mesh belt are coated with bonding resin.

[0007] Further, the winding layer is made of high density polyethylene new and old mixed material.

[0008] Further, the outer protective layer is made of high density polyethylene new and old mixed material and is subjected to weather resistance modification treatment.

[0009] Further, the depth of the rectangular groove of the high density polyethylene belt is half of its thickness.

[0010] The utility model has the advantages of:

[0011] The utility model discloses a three-layer composite structure, steel wire mesh belt is embedded in the groove of high density polyethylene tape, then adopts spiral winding to form winding layer on the surface of inner tube, first, steel wire mesh does not need to be processed into long cylinder, and the procedure of net sleeve is saved, and the longer pipeline of single root can be continuously produced, and second, the addition of winding layer directly connects inner tube and outer protective layer, and the hot melt strength is higher, and compared with the structure of double-layer steel wire mesh, the strength is greater. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is structural schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 Partial A of the enlarged schematic diagram in.

[0014] In the drawing: 1-inner tube, 2-winding layer, 3-high density polyethylene tape, 31-groove, 4-steel wire mesh belt, 5-outer protective layer. DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model are further explained in combination with the drawings. It needs to be explained here that the explanation of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] As Figures 1-2 Shown:

[0017] A kind of high density polyethylene HDPE double color composite steady pipe for water supply, including inner tube 1, winding layer 2, steel wire mesh belt 4 and outer protective layer 5, wherein inner tube 1 is high density polyethylene new material, outer protective layer 5 is modified high density polyethylene;Wherein winding layer 2 adopts the high density polyethylene tape 3 of outer surface middle part with rectangular groove 31 spiral winding on the surface of outer protective layer 5, steel wire mesh belt 4 is equal width and equal thickness with rectangular groove 31, is embedded in rectangular groove 31, outer protective layer 5 is located at the outside of winding layer 2 (the depth of the rectangular groove 31 of high density polyethylene tape 3 is half of thickness optimum).

[0018] In the utility model, inner tube 1 adopts high density polyethylene new material, and outer layer adopts modified high density polyethylene material, on the one hand, ensures the safety of internal drainage, on the other hand, outer protective layer 5 uses modified high density polyethylene and can improve weather resistance, since modifier is added in the modification process, so outer protective layer 5 will present blue or black and the like, and inner tube 1 and winding layer 2 are white, and the whole is the structure of double color.

[0019] Different from the double-layer composite structure of the prior art, the utility model adopts three-layer composite structure, steel wire mesh band 4 is inlayed in the groove 31 of high density polyethylene band 3, then adopts spiral winding in the surface of inner tube 1 to form winding layer 2, first, steel wire mesh does not need to be processed into long cylinder, saves the procedure of netting, can continuously produce single longer pipeline, second, the addition of winding layer 2 directly links inner tube 1 and outer protective layer 5, and the hot melt strength is higher, compared with the structure of double-layer steel wire mesh, the strength is greater.

[0020] In order to increase the bonding performance, the inner and outer surfaces of winding layer 2 and the upper and lower surfaces of steel wire mesh band 4 are coated with bonding resin. Since winding layer 2 is the middle layer and does not directly contact the internal fluid, high-density polyethylene new and old mixed materials can be used, and a portion of recycled waste materials can be used to reduce costs. Similarly, outer protective layer 5 also uses high-density polyethylene new and old mixed materials, but needs to be subjected to weather-resistant modification treatment to improve wear resistance and aging resistance.

[0021] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A high density polyethylene (HDPE) bi-color composite steady-state pipe for water supply, characterized by: It comprises an inner tube, a winding layer, a steel wire mesh belt and an outer protective layer, wherein the inner tube is high-density polyethylene new material, and the outer protective layer is modified high-density polyethylene; the winding layer is formed by spirally winding a high-density polyethylene belt with a rectangular groove in the middle of the outer surface on the surface of the outer protective layer, the steel wire mesh belt is embedded in the rectangular groove and has the same width and thickness as the rectangular groove, and the outer protective layer is located outside the winding layer.

2. The high density polyethylene (HDPE) bi-color composite steady-state pipe for water supply according to claim 1, characterized in that: The inner and outer surfaces of the winding layer and the upper and lower surfaces of the steel wire mesh belt are coated with adhesive resin.

3. The high density polyethylene (HDPE) bi-color composite steady-state pipe for water supply according to claim 2, characterized in that: The winding layer is a mixture of high-density polyethylene new and old materials.

4. The high density polyethylene (HDPE) bi-color composite steady-state pipe for water supply according to claim 2, characterized in that: The outer protective layer is a mixture of high-density polyethylene new and old materials and is subjected to weather resistance modification treatment.

5. The high density polyethylene (HDPE) bi-color composite steady-state pipe for water supply according to claim 2, characterized in that: The rectangular groove of the high-density polyethylene belt has a depth of half the thickness.

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