CN209743801U

CN209743801U - HDPE double-rib reinforced structure wall pipe

Info

Publication number: CN209743801U
Application number: CN201920255299.3U
Authority: CN
Inventors: 曹能健
Original assignee: Shanghai Ruihuang Pipe Technology Co Ltd
Current assignee: Shanghai Ruihuang Pipe Technology Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-06
Anticipated expiration: 2029-02-28

Abstract

The utility model relates to a HDPE double-rib reinforcing structure wall pipe, body have smooth inner wall and the mutual spaced ripple outward appearance of crest trough, and the body is formed by sheet spiral winding and overlapping each other and the melten gel overlap joint at adjacent side, and the sheet includes the side of crest portion and both sides, and crest portion is confined cavity structure, and crest portion includes the outer PP pipe with inside of PE, and the PP pipe forms the double-rib in crest portion. The crest part is of a cavity structure, the double ribs are arranged in the crest part, so that the sheet is not easy to topple in the spiral winding process, namely the double ribs cannot simultaneously topple left or right, and the double ribs are used for supporting, so that the ring stiffness of the pipe body is obviously improved; the double ribs are formed by PP pipes, namely reinforcing ribs in the wave crests are formed by the PP pipes, the manufacturing cost is obviously reduced, and the PE layers outside the PP pipes can resist damage of ultraviolet rays to the PP pipes, so that the service life of the pipe body is prolonged.

Description

HDPE double-rib reinforced structure wall pipe

Technical Field

The utility model relates to a bellows, especially a HDPE double-ribbed reinforced structure wall pipe.

Background

Traditional double-walled bellows, including inner wall and outer wall, the axial cross-section of outer wall is the corrugate, and the application of polyethylene double-walled bellows is very extensive, if be applied to many aspects such as farmland irrigation, city blow off pipe. In the polyethylene double-wall corrugated pipe in the current market, the wave crest part is a cavity, and the inside of the polyethylene double-wall corrugated pipe is not supported, so that the strength of the wave crest part is not greatly improved.

Therefore, designers design the reinforcing rib in the peak, but in the spiral winding process of one reinforcing rib, the reinforcing rib is easy to topple, the toppling direction is uncontrollable, and the reinforcing rib tilts left and right a little, so that the ring rigidity of the corrugated pipe at the peak is not uniform.

Moreover, pure polyethylene bellows use a relatively large amount of PE in order to obtain sufficient ring stiffness, which results in a relatively high overall cost of the bellows.

Disclosure of Invention

the utility model provides a HDPE double-rib reinforcing structure wall pipe sets up the PP pipe inside the crest of PE to form the double-rib in the crest and support, thereby obtain high ring rigidity, reduce the overall cost of bellows simultaneously.

The utility model also provides a HDPE double-rib reinforcing structure wall pipe, the sheet of winding usefulness sets up the protruding ripples structure of taking the inner chamber at the overlap joint position, forms the overlapping enhancement crest at sheet overlap joint position after the winding to improve the overlap joint intensity of bellows.

the utility model discloses a concrete technical scheme does: the utility model provides a HDPE double-rib reinforcing structure wall pipe, the body has smooth inner wall and the mutual spaced ripple outward appearance of crest trough, and the body is formed by sheet spiral winding and overlapping each other and the melten gel overlap joint at adjacent side, and the sheet includes the side of crest portion and both sides, and crest portion is confined cavity structure, and crest portion includes the outer PP pipe with inside of PE, and the PP pipe forms the double-rib in crest portion.

the crest part is of a cavity structure, the double ribs are arranged in the crest part, so that the sheet is not easy to topple in the spiral winding process, namely the double ribs cannot simultaneously topple left or right, and the double ribs are used for supporting, so that the ring stiffness of the pipe body is obviously improved; the double ribs are formed by PP pipes, namely reinforcing ribs in the wave crests are formed by the PP pipes, the manufacturing cost is obviously reduced, and the PE layers outside the PP pipes can resist damage of ultraviolet rays to the PP pipes, so that the service life of the pipe body is prolonged.

According to a preferable scheme, the sheet is formed by co-extruding PE and PP, two PP pipes are arranged inside the sheet, the two PP pipes are mutually separated, and an intermediate cavity is formed at the separation part. The PE outer layer and the PP pipes are co-extruded, the forming is convenient, the two PP pipes are separated to form double ribs, and the separated parts form middle cavities, so that the heat dissipation is convenient, the forming of the PP pipes is facilitated, and the support shape can be well kept in the spiral winding process.

According to a preferable scheme, a protruding part is arranged at the position, corresponding to the middle cavity, of the PE outer layer, and the protruding part is clamped between the two PP pipes. The design of the projections allows for positioning and axial support of the PP tube between the separation locations.

In a preferred embodiment, two separate PP tubes are connected by a connecting piece, and the connecting piece is parallel to the bottom surface of the sheet. The connecting sheet enables the two PP pipes to have a common supporting effect as double ribs.

According to a preferable scheme, the cross section of each PP pipe is of a closed structure and comprises a bottom edge, a vertical edge and an arc edge, the bottom edge, the vertical edge and the arc edge enclose an inner cavity, the vertical edges of the two PP pipes are opposite in a wave crest, the arc edges are arranged on two sides, and the bottom edge is parallel to the axis of the pipe body.

According to a preferable scheme, the vertical edge is perpendicular to the bottom edge, the two PP pipes are symmetrical in the wave crest, and the two PP pipes are coated by the PE outer layer.

According to the preferable scheme, the end position of the side edge is a lap joint part, the two lap joint parts are an upper lap joint part and a lower lap joint part respectively, the upper lap joint part and the lower lap joint part are overlapped in an up-down overlapping mode, and the sol part is an overlapped contact surface. The sheet spiral winding in-process is adjacent side interconnect, is generally direct overlap and the connection of sol filling, and this embodiment is the mode of adopting overlap joint each other, and this kind of structure makes the thickness of pipe wall satisfy the standard mainly.

In a preferred scheme, the upper lapping part and the lower lapping part are overlapped with each other to form a reinforced wave crest structure with a raised surface.

According to the optimal scheme, the upper lapping part is of a convex wave structure with an inner cavity, the height of a convex wave is smaller than that of a wave peak, and the inner cavity disappears to form a reinforced wave peak structure with a solid wall after the upper lapping part and the lower lapping part are overlapped with each other. The convex wave structure at the lap joint part has larger thickness, and the inner cavity of the convex wave belt can reduce the wall thickness of the forming and is convenient for heat dissipation.

The utility model has the advantages that: the crest part is of a cavity structure, the double ribs are arranged in the crest part, so that the sheet is not easy to topple in the spiral winding process, namely the double ribs cannot simultaneously topple left or right, and the double ribs are used for supporting, so that the ring stiffness of the pipe body is obviously improved; the double ribs are formed by PP pipes, namely reinforcing ribs in the wave crests are formed by the PP pipes, the manufacturing cost is obviously reduced, and the PE layers outside the PP pipes can resist damage of ultraviolet rays to the PP pipes, so that the service life of the pipe body is prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a sheet structure according to the present invention;

Fig. 3 is a schematic structural diagram of a sheet according to a second embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a sheet according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a sheet according to a fourth embodiment of the present invention;

In the figure: 1. the pipe body, 2, crest, 3, trough, 4, strengthen crest, 5, sheet, 6, bottom surface, 7, lower overlap joint portion, 8, PE skin, 9, PP pipe, 10, interior cavity, 11, middle chamber, 12, crest portion, 13, convex wave, 14, inner chamber, 15, upper overlap joint portion, 16, side, 17, protruding portion, 18, connecting piece.

Detailed Description

the invention will be further described with reference to specific embodiments and with reference to the accompanying drawings.

Example 1:

As shown in fig. 1 and 2, a HDPE double-ribbed reinforced structural wall pipe has a pipe body 1 with a smooth inner wall and corrugated outer surfaces with peaks 2 and valleys 3 spaced from each other, and is formed by spirally winding a sheet 5 and overlapping the sheet at adjacent sides and by melt-adhesive bonding.

The sheet is formed by PE and PP through co-extrusion, the sheet comprises a crest part 12 and side edges 16 on two sides, the crest part is of a closed cavity structure and comprises a PE outer layer 8 and two inner PP pipes 9, the two inner PP pipes 9 are separated from each other, and a middle cavity 11 is formed at the separated part. The cross section of the PP pipe is of a closed structure and comprises a bottom edge, a vertical edge and an arc edge, the bottom edge, the vertical edge and the arc edge enclose an inner cavity 10, the vertical edges of the two PP pipes are opposite in a wave crest, the arc edge is positioned on two sides, and the bottom edge is parallel to the axis of the pipe body. The vertical edge is vertical to the bottom edge, the two PP pipes are symmetrical in the wave crest, and the PE outer layer covers the two PP pipes. The stile of PP pipe forms the double rib in the crest portion, the utility model discloses well double rib is parallel to each other and perpendicular pipeline axis, sheet spiral winding back, and the bottom surface 6 of sheet connects into the inner wall of body.

The end of the side edge of the sheet is a lap joint part, the two lap joint parts are an upper lap joint part 15 and a lower lap joint part 7 respectively, the upper lap joint part and the lower lap joint part are overlapped in an up-down overlapping mode, and the lap joint surface of the upper lap joint part and the lower lap joint part is a sol part. The upper lapping part is of a convex wave structure with an inner cavity 14, the height of the convex wave is smaller than that of the wave peak part, the inner cavity disappears to form a solid wall shape after the upper lapping part and the lower lapping part are overlapped with each other, and a reinforced wave peak 4 structure with a protruding surface is formed after the upper lapping part and the lower lapping part are overlapped with each other.

Example 2:

As shown in fig. 3, an HDPE double-ribbed reinforced structural wall pipe differs from example 1 in that: the outer layer of PE is provided with a protruding part 17 at a position corresponding to the middle cavity, the inner surface of the outer layer of PE is provided with protruding parts at two positions, the protruding parts are clamped between the two PP pipes, and the protruding parts are just positioned at two ends of the double ribs. The rest of the structure is referred to example 1.

Example 3:

As shown in fig. 4, an HDPE double-ribbed reinforced structural wall pipe differs from the above examples in that: the two separated PP pipes are connected by a connecting sheet 18, the connecting sheet is parallel to the bottom surface 6 of the sheet and is made of PP material, and the position of the connecting sheet is just at the height of the double ribs 1/2. The remaining structure refers to other embodiments.

Example 4:

As shown in fig. 5, an HDPE double-ribbed reinforced structural wall pipe differs from the above examples in that: the outer surface of going up overlap joint portion does not have the protruding ripples structure of taking the inner chamber, goes up overlap joint portion and lower overlap joint portion and is the flat bed structure, and the thickness of going up overlap joint portion equals with the thickness of lower overlap joint portion, is 1/2 thick of side. The rest of the structure is referred to example 1.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.

Claims

1. The utility model provides a HDPE double-rib reinforcing structure wall pipe, its characterized in that, the body has smooth inner wall and the mutual spaced ripple outward appearance of crest trough, and the body is formed by sheet spiral winding and overlapping each other and the melten gel overlap joint at adjacent side, and the sheet includes the side of crest portion and both sides, and crest portion is confined cavity structure, and crest portion includes the outer PP pipe with inside of PE, and the PP pipe forms the double rib in crest portion.

2. an HDPE twin-ribbed reinforced structural wall pipe as claimed in claim 1, characterised in that the sheet is co-extruded from PE and PP, the inner PP pipe being two, the two PP pipes being separate from each other and forming a central cavity in the separate part.

3. HDPE double-ribbed reinforced structural wall pipe according to claim 2, characterised in that the PE outer layer is provided with a protrusion in correspondence of the middle cavity, which is snapped between the two PP pipes.

4. an HDPE double-ribbed reinforced structural wall pipe as claimed in claim 2 or 3, characterized in that two separate PP pipes are connected by a connecting piece, which is parallel to the bottom surface of the sheet.

5. A HDPE double-ribbed reinforced structural wall pipe as claimed in claim 1, 2 or 3, characterized in that the cross-section of the PP pipe is a closed structure comprising a bottom edge, a vertical edge and an arc edge, the bottom edge, the vertical edge and the arc edge enclose an inner cavity, the vertical edges of the two PP pipes are opposite in the wave crest, the arc edge is on both sides, and the bottom edge is parallel to the pipe body axis.

6. The HDPE double-ribbed reinforced structural wall pipe of claim 5, wherein the vertical edges are perpendicular to the bottom edge, the two PP pipes are symmetrical within the wave crest, and the outer PE layer covers the two PP pipes.

7. An HDPE double-rib reinforced structural wall pipe as claimed in claim 1, 2 or 3, characterized in that the end positions of the side edges are lap joint parts, the two lap joint parts are respectively an upper lap joint part and a lower lap joint part, the upper lap joint part and the lower lap joint part are overlapped in an up-and-down overlapping manner, and the sol part is an overlapped contact surface.

8. The HDPE double-ribbed reinforced structural wall pipe as claimed in claim 7, wherein the upper and lower overlapping portions overlap each other to form a reinforced wave crest structure with surface protrusions.

9. The HDPE double-ribbed reinforced structural wall pipe of claim 8, wherein the upper overlapping portion has a convex wave structure with an inner cavity, the height of the convex wave is less than the height of the wave crest, and the inner cavity disappears after the upper overlapping portion and the lower overlapping portion overlap each other to form a solid-walled reinforced wave crest structure.