CN204358272U - Plastic helical bellow - Google Patents

Abstract

The utility model discloses a plastic spiral corrugated pipe, which comprises a pipe body formed by spirally winding a pipe body plastic billet. A plastic tube on the outer wall of the tube, the outer wall of the tube is bonded with a cladding layer that tightly wraps the reinforcing rib on the outer wall of the tube, and the cladding layer is a coating that is spirally wound on the outer wall of the tube Covered plastic blank tape. The plastic spiral corrugated pipe of this structure is light in weight, good in rigidity and strong in pressure bearing capacity.

Description

Plastic spiral bellows

technical field

The utility model relates to a plastic spiral corrugated pipe.

Background technique

Plastic pipes with all-plastic structural walls are widely used in projects such as urban water supply, drainage, long-distance water delivery, and farmland irrigation because of their advantages such as light weight, high-quality joints, long life, corrosion resistance, and convenient construction. However, the ring stiffness of the all-plastic pipe is poor, and the pressure bearing capacity is weak.

Utility model content

The technical problem to be solved by the utility model is to provide a plastic spiral corrugated pipe with better ring stiffness and high pressure bearing capacity for the above defects.

In order to solve the above-mentioned technical problems, the utility model provides a plastic spiral corrugated pipe with the following structure, which includes a pipe body formed by spirally winding a pipe body plastic blank, and is characterized in that the outer wall of the pipe is provided with a spiral Reinforcing rib, the reinforcing rib is a plastic tube spirally wound on the outer wall of the tube, the outer wall of the tube is bonded with a cladding layer that tightly wraps the reinforcing rib on the outer wall of the tube, the cladding The cladding is a cladding plastic blank strip spirally wound on the outer wall of the tube.

The tubular plastic blank includes a blank body, the upper surface of the blank body is provided with a plurality of ribs of the same length as the blank body, and the upper surface of the blank body extends to an outer side to form a thickness smaller than that of the blank. The upper lapping piece of the body, the lower surface of the blank body extends to the other outside to form a lower lapping piece with a thickness smaller than that of the blank body, and the sum of the thicknesses of the lower lapping piece and the upper lapping piece is equal to the thickness of the blank body.

The cladding layer plastic blank includes a blank main body, and the upper surface of the blank main body is provided with a plurality of ribs with the same length as the blank main body.

The outer wall of the plastic pipe is provided with a plurality of ring ribs arranged at intervals.

The pipe body of the utility model is provided with a spiral reinforcing rib formed by winding a plastic pipe, that is, the reinforcing rib is a hollow structure, which can not only increase the ring stiffness of the plastic spiral corrugated pipe and improve its pressure bearing capacity, but also reduce the The weight of the plastic spiral corrugated pipe makes it have the advantages of light weight and strong pressure bearing capacity; there is a cladding layer outside the reinforcing rib, which can not only make the connection between the reinforcing rib and the pipe body more firm, but also further improve the plastic spiral corrugated pipe. The pressure bearing capacity of the tube.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the cross-sectional structure of the pipe body blank strip;

Fig. 3 is the schematic diagram of the cross-sectional structure of the cladding layer blank strip;

Fig. 4 is an enlarged view of part A of Fig. 1;

Fig. 5 is a schematic diagram of the structure of the plastic pipe.

Detailed ways

As shown in Figure 1, the plastic spiral corrugated pipe includes a pipe body 1, and the outer wall of the pipe body 1 is provided with a spiral reinforcing rib 2, and the reinforcing rib 2 is a plastic pipe spirally wound on the outer wall of the pipe body 1. The outer wall of the pipe body 1 is bonded with a cladding layer 3 tightly covering the reinforcing rib 2 on the outer wall of the pipe body 1, and the cladding layer 3 is a cladding layer blank spirally wound on the outer wall of the pipe body 1 bring.

The production process of the plastic spiral corrugated pipe with the above structure is as follows: the pipe body 1 is formed by spirally winding the pipe body blank tape. The plastic pipe is spirally wound on the surface to form a spiral reinforcing rib 2, while the plastic pipe is wound, the plastic blank tape of the cladding layer is also wound on the pipe body 1 so that the plastic blank tape of the cladding layer is fused with the pipe body 1 as a whole. Thus, the coating layer 3 covering the reinforcing rib 2 on the pipe body 1 is formed. The above-mentioned production process is the prior art and is well known to those skilled in the art, and details will not be repeated here.

As shown in Figure 2, the tube body plastic blank includes a blank body 4, and the upper surface of the blank body 4 is provided with a plurality of convex ribs 5 equal to the length of the blank body. The surface extends to an outside to form the upper overlapping piece 6 that thickness is less than the blank body, and the lower surface of the blank body 4 extends to the other outside to form a lower overlapping piece 7 whose thickness is smaller than the blank body. The lower overlapping piece 7 and the upper The sum of the thicknesses of the straps 6 is equal to the thickness of the blank body 4 . The setting of the above-mentioned ribs 5 can improve the strength of the plastic blank belt of the pipe body, and then improve the strength of the pipe body. When the plastic blank belt of the pipe body is spirally wound, the lower lap 7 and the upper lap 6 form a pair of lap surfaces. The thickness of the two overlapped together is the same as the thickness of the blank body 4, which can make the wall thickness of the pipe body uniform.

As shown in Fig. 3, described cladding layer plastic base band comprises base band main body 8, and the upper surface of base band main body 8 is provided with a plurality of equal length ribs 9 with base band main body at intervals, and rib bar 9 can be arranged Increase the strength of clad plastic blank strips.

As shown in Figure 4 and Figure 5, the outer wall of the plastic pipe is provided with a plurality of ring ribs 10 arranged at intervals. The arrangement of the ring ribs 10 can improve the strength of the plastic pipe itself, and the second is to improve the connection between the plastic pipe and the pipe. The contact area between the body and the cladding layer makes the connection between the plastic pipe and the pipe body and the cladding layer more firm.

Claims (4)

1. A plastic spiral corrugated pipe, including a pipe body (1) formed by spirally winding a pipe body plastic billet, characterized in that the outer wall of the pipe body (1) is provided with a spiral reinforcing rib (2), The reinforcing rib (2) is a plastic tube spirally wound on the outer wall of the tube body (1), and the outer wall of the tube body (1) is bonded with the reinforcing rib (2) tightly wrapped on the tube body ( 1) The cladding layer (3) on the outer wall, the cladding layer (3) is a cladding layer plastic blank strip spirally wound on the outer wall of the pipe body (1). 2. The plastic spiral corrugated pipe according to claim 1, characterized in that the plastic blank belt of the pipe body includes a blank belt body (4), and the upper surface of the blank belt body (4) is provided with a plurality of blank belts at intervals. Convex ribs (5) of equal length on the body, the upper surface of the blank body (4) extends to one outside to form an upper lap (6) whose thickness is smaller than the blank body, and the lower surface of the blank body (4) faces to the other side An outer side extends to form a lower lap (7) with a thickness smaller than that of the blank body, and the sum of the thicknesses of the lower strap (7) and the upper strap (6) is equal to the thickness of the blank body (4). 3. The plastic spiral corrugated pipe according to claim 1, characterized in that the cladding plastic blank belt comprises a blank belt main body (8), and a plurality of strips and blank belts are arranged at intervals on the upper surface of the blank belt main body (8). Ribs of equal length with body (9). 4. The plastic spiral corrugated pipe according to claim 1, characterized in that a plurality of ring ribs (10) arranged at intervals are provided on the outer wall of the plastic pipe.