HDPE (high-density polyethylene) axial reinforced corrugated pipe

Abstract

The utility model provides an HDPE (High-Density Polyethylene) axial reinforced corrugated pipe, which aims at overcoming the defects of the existing corrugated pipe formed by winding on the aspect of bending resistance and avoiding the design of axial reinforced transverse ribs, and comprises a pipe body formed by spirally winding HDPE sheets, and the axial reinforced transverse ribs additionally arranged on the periphery of the pipe body, the axial reinforcing transverse ribs are hollow or solid ribs and are arranged along the periphery of the pipe body at equal intervals; and the axial reinforcing transverse ribs are parallel to the central axis of the pipe body and are fused and bonded with the periphery of the pipe body.

Description

Technical Field

[0001] The utility model relates to a corrugated pipe, in particular to a HDPE axially reinforced corrugated pipe. Background Art

[0002] HDPE is a good pipe. It should not only have good economy, but also have a series of advantages such as stable and reliable interface, material impact resistance, crack resistance, aging resistance, corrosion resistance, etc. Compared with traditional pipes, HDPE pipeline system has a series of advantages. For this reason, HDPE corrugated pipes have replaced traditional pipes. HDPE corrugated pipes are divided into two production forms, one is extrusion double-wall corrugated pipes, and the other is winding corrugated pipes. The production process of double-wall corrugated pipes is an extrusion molding process. The mold size of the equipment should be the same as the diameter of the pipe. Therefore, if large-diameter HDPE double-wall corrugated pipes are to be produced, mechanical equipment with large-diameter molds is required, and the R&D cost of such equipment is quite high. Due to the production process, the winding pipe will not be limited by the size of the equipment mold, so large-diameter pipes can be manufactured in terms of molding process. At the same time, the utilization rate of winding production materials is higher than that of extrusion molding process, which can effectively save costs.

[0003] HDPE corrugated pipes usually have qualified ring stiffness, but there may be unexpected bending when facing bending. For this reason, it is necessary to add axially parallel transverse ribs to increase the bending resistance. Traditional extruded corrugated pipes can extrude transverse ribs at the same time as the outer shell is extruded. However, because the design usually also designs circumferential reinforcement ribs for ring stiffness, the combination of the surrounding reinforcement ribs and the transverse ribs will cause the extruded transverse ribs to be discontinuous, thereby reducing the maximum bending resistance of the transverse ribs. Due to its production process, traditional wound corrugated pipes cannot attach transverse ribs while winding. If the transverse ribs need to be reattached after cutting, the production speed will be reduced, thereby losing the production advantage of wound corrugated pipes. Summary of the invention

[0004] The utility model designs a HDPE axially reinforced corrugated pipe in view of the fact that the existing winding-molded corrugated pipe has deficiencies in anti-bending performance and has no design of axially reinforced transverse ribs, and comprises:

[0005] The pipe body is formed by spirally winding HDPE sheets, and axial reinforcement ribs are added around the outer periphery of the pipe body;

[0006] The axial reinforcement transverse ribs are hollow or solid and are arranged at equal intervals along the outer circumference of the tube body;

[0007] The axial reinforcing transverse ribs are parallel to the central axis of the tube body, and the axial reinforcing transverse ribs are melt-bonded to the outer periphery of the tube body.

[0008] Preferably, the axial reinforcing transverse ribs use solid ribs, which are T-shaped, wherein the top edge of the T is melt-bonded to the outer periphery of the tube body, and the vertical edge of the T is arranged radially along the tube body.

[0009] Preferably, the axial reinforcing transverse ribs are solid ribs, which are semicircular, isosceles triangle, rectangular or trapezoidal;

[0010] The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body.

[0011] Preferably, the rectangular solid rib has four equal sides and a square cross-section.

[0012] As a preference, the axial reinforcing transverse ribs use hollow rib bodies, which are semicircular, isosceles triangle, rectangular or trapezoidal;

[0013] The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body.

[0014] Preferably, the axial reinforcing transverse ribs are melted and point-bonded to the outer periphery of the tube body.

[0015] Preferably, the bottom edge of the semicircular rib body is hollow, and a bonding foot radially extends from the arc of the semicircle parallel to the bottom edge;

[0016] The base of the isosceles triangle is empty, and bonding feet extend from the isosceles side to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse;

[0017] The bottom side of the rectangle is empty, and the short sides are connected with adhesive feet, which are parallel to the bottom side;

[0018] The bottom side of the trapezoid is hollow, and bonding feet extend from the hypotenuse to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse.

[0019] The beneficial effect of the utility model is that it provides a winding forming tube with enhanced bending resistance, which is different from the traditional basic forming and maintains the advantages of fast and continuous production of the winding forming tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the present application;

[0021] Figure 2 A diagram of the bonding unit of the axial reinforcing ribs and the tube body in Example 4 of the present application;

[0022] Figure 3 A diagram of the bonding unit of the axial reinforcing ribs and the tube body in Example 3 of the present application;

[0023] Figure 4 A diagram of the bonding unit of the axial reinforcing ribs and the tube body in Example 5 of the present application;

[0024] Figure 5 A diagram of the bonding unit of the axial reinforcing ribs and the tube body in Example 1 of the present application;

[0025] In the figure: 1. Tube body, 2. Axial reinforcing ribs. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0027] like Figure 1 and Figure 5 As shown, the HDPE axially reinforced corrugated pipe comprises:

[0028] A pipe body 1 is formed by spirally winding a HDPE sheet, and axially reinforcing transverse ribs 2 are added to the outer periphery of the pipe body;

[0029] Axial reinforcing transverse ribs 2 are arranged at equal intervals along the outer circumference of the tube body;

[0030] The axial reinforcing transverse ribs 2 are parallel to the central axis of the tube body, and the axial reinforcing transverse ribs 2 are melt-bonded to the outer periphery of the tube body.

[0031] The axial reinforcing transverse ribs 2 use solid ribs, which are T-shaped, wherein the top edge of the T is melt-bonded to the outer periphery of the tube body, and the vertical edge of the T is arranged along the radial direction of the tube body. Example

[0032] The difference between this embodiment and embodiment 1 is that the axial reinforcing transverse ribs 2 use solid ribs, which are semicircular, isosceles triangle, rectangular or trapezoidal;

[0033] The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body.

[0034] The four sides of the rectangular solid rib body are equal and the cross section is a square. Example

[0035] like Figure 3 As shown, the difference between this embodiment and embodiment 2 is that the axial reinforcing transverse ribs 2 use hollow ribs, which are semicircular, isosceles triangle, rectangular or trapezoidal;

[0036] The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body. Example

[0037] like Figure 2 As shown, the difference between this embodiment and embodiment 3 is that the axial reinforcing transverse rib 2 and the outer periphery of the tube body are melted and bonded at points. The axial reinforcing transverse rib 2 uses a hollow rib body and has no bottom edge. Therefore, the bonding point is transformed into a vertical or inclined part pointing to the tube body 1. Example

[0038] like Figure 4 As shown, the difference between this embodiment and embodiment 4 is that in order to avoid poor bonding due to point bonding, the bonding feet are extended to strengthen the bonding structure.

[0039] The bottom edge of the semicircular tendon body is hollow, and a bonding foot radially extends from the arc of the semicircle parallel to the bottom edge;

[0040] The base of the isosceles triangle is empty, and bonding feet extend from the isosceles side to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse;

[0041] The bottom side of the rectangle is empty, and the short sides are connected with adhesive feet, which are parallel to the bottom side;

[0042] The bottom side of the trapezoid is hollow, and bonding feet extend from the hypotenuse to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A HDPE axially reinforced corrugated pipe, characterized in that: include: The pipe body is formed by spirally winding HDPE sheets, and axial reinforcement ribs are added around the outer periphery of the pipe body; The axial reinforcement transverse ribs are hollow or solid and are arranged at equal intervals along the outer circumference of the tube body; The axial reinforcing transverse ribs are parallel to the central axis of the tube body, and the axial reinforcing transverse ribs are melt-bonded to the outer periphery of the tube body.

2. The HDPE axially reinforced corrugated pipe according to claim 1, characterized in that: Axial reinforcing transverse ribs use solid ribs, which are T-shaped, wherein the top edge of the T is melt-bonded to the outer periphery of the tube body, and the vertical edge of the T is arranged along the radial direction of the tube body.

3. The HDPE axially reinforced corrugated pipe according to claim 1, characterized in that: Axial reinforcement transverse reinforcement uses solid reinforcement body, the reinforcement body is semicircular, isosceles triangle, rectangular or trapezoidal; The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body.

4. The HDPE axially reinforced corrugated pipe according to claim 3, characterized in that: The four sides of the rectangular solid rib body are equal and the cross section is a square.

5. The HDPE axially reinforced corrugated pipe according to claim 1, characterized in that: Axial reinforcement transverse reinforcement uses hollow reinforcement body, which is semicircular, isosceles triangle, rectangular or trapezoidal; The straight side of the semicircle is melt-bonded to the outer periphery of the tube body, the base of the isosceles triangle is melt-bonded to the outer periphery of the tube body, one long side of the rectangle is melt-bonded to the outer periphery of the tube body, and the long side of the trapezoid is melt-bonded to the outer periphery of the tube body.

6. The HDPE axially reinforced corrugated pipe according to claim 5, characterized in that: The axial reinforcing transverse ribs are melted and point-bonded to the outer periphery of the tube body.

7. The HDPE axially reinforced corrugated pipe according to claim 5, characterized in that: The bottom edge of the semicircular tendon body is hollow, and a bonding foot radially extends from the arc of the semicircle parallel to the bottom edge; The base of the isosceles triangle is empty, and bonding feet extend from the isosceles side to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse; The bottom side of the rectangle is empty, and the short sides are connected with adhesive feet, which are parallel to the bottom side; The bottom side of the trapezoid is hollow, and bonding feet extend from the hypotenuse to both sides, and the bonding feet form an obtuse angle with the adjacent hypotenuse.

Images