阅读说明：本技术 承插式波纹增强双平壁复合管及其制造方法 (Socket type corrugated reinforced double-flat-wall composite pipe and manufacturing method thereof ) 是由 张炜 王秋腾 黄米财 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种承插式波纹增强双平壁复合管,包括双壁波纹管主体和一体设置于双壁波纹管主体一端的承口,双壁波纹管主体远离承口的一端设有插口连接段,双壁波纹管主体和承口均包括内平壁层和波纹增强层,波纹增强层的外壁设有波峰和波谷,其特征在于,双壁波纹管主体和承口的外周设有外平壁层,此外平壁层由承口延伸至插口连接段的中部,所述外平壁层在插口连接段的中部位置沿连接波峰和波谷的弧面向内包裹。本发明还公开了一种上述承插式波纹增强双平壁复合管的制造方法。本发明和现有技术相比所具有的优点是：重量轻、材料消耗少、强度高、生产效率高、方便拖拉和滚动,敷设时回填密实。(The invention discloses a socket joint type corrugated reinforced double-flat-wall composite pipe, which comprises a double-wall corrugated pipe main body and a bell mouth integrally arranged at one end of the double-wall corrugated pipe main body, wherein a socket connecting section is arranged at one end of the double-wall corrugated pipe main body, which is far away from the bell mouth, the double-wall corrugated pipe main body and the bell mouth both comprise an inner flat wall layer and a corrugated reinforcing layer, and the outer wall of the corrugated reinforcing layer is provided with wave crests and wave troughs. The invention also discloses a manufacturing method of the socket type corrugated reinforced double-flat-wall composite pipe. Compared with the prior art, the invention has the advantages that: light weight, less material consumption, high strength, high production efficiency, convenient dragging and rolling and dense backfill during laying.)

1. The utility model provides a compound pipe of two flat walls of socket joint formula ripple reinforcing, includes that double-walled bellows main part and an organic whole set up in the bellmouth of double-walled bellows main part one end, and the one end that the bellmouth was kept away from to double-walled bellows main part is equipped with the socket linkage segment, and double-walled bellows main part and bellmouth all include interior flat wall layer and ripple enhancement layer, and the outer wall of ripple enhancement layer is equipped with crest and trough, and its characterized in that, the periphery of double-walled bellows main part and bellmouth is equipped with outer flat wall layer, and outer flat wall layer extends to the middle part of.

2. The socket corrugated reinforced double flat-walled composite pipe of claim 1 wherein the outer flat-walled layer is wrapped inwardly along the arcuate surfaces connecting the crests and troughs at a mid-portion location of the spigot connection section.

3. The socket-type corrugated reinforced double flat-wall composite pipe according to claim 1, wherein at least one of the valleys of the socket connecting section not covered by the outer flat-wall layer is provided with a sealing rubber ring.

4. The socket and spigot corrugated reinforced double flat-wall composite pipe of claim 1, wherein the material of said inner flat wall layer and said corrugated reinforcing layer is made of high density polyethylene, polypropylene, polyvinyl chloride or their alloy materials.

5. The socket and spigot corrugated reinforced double flat-wall composite pipe of claim 1 wherein the material of said outer flat-wall layer is made of high density polyethylene, polypropylene, ABS, PET or alloys thereof.

6. A method of manufacturing a socket corrugated reinforced double flat walled composite pipe as claimed in any one of claims 1 to 5 comprising the steps of:

(1) plasticizing the raw material by a corrugated pipe extruder, feeding the raw material into a corrugated pipe forming machine for mould pressing blow molding, cooling, cutting off and placing the raw material in a first stinger to form a double-wall corrugated pipe;

(2) one end of the cut pipe is subjected to rotary heating, flaring molding and cooling to form a socket type double-wall corrugated pipe;

(3) pushing the socket type double-wall corrugated pipe to a cladding device by a tractor to clad to form an outer flat wall layer, and cutting to form a socket type corrugated reinforced double-flat-wall composite pipe which is not clad and is placed on a second stinger;

(4) and (3) using a wrapping device to wrap the edge of the outer flat wall layer of the socket type corrugated reinforced double-flat-wall composite pipe which is not wrapped.

7. The manufacturing method of a socket type corrugated reinforced double-flat-wall composite pipe according to claim 6, wherein the edge covering device comprises a support, a heating device, a compression roller device, a rotary supporting fixture and a rotary motor, when the edge is covered, the pipe socket connecting section is sleeved outside the fixture of the edge covering device, the pipe and the rotary supporting fixture are locked, the rotary motor is started to drive the rotary supporting fixture to rotate, the pipe is further driven to rotate, the heating device is started, after the edge of the outer flat wall layer of the pipe is gradually softened, the compression roller device is pressed downwards, and the edge of the outer flat wall layer is gradually covered on the cambered surface of the connecting crest and the trough of the socket connecting section through operations of rotation, heating, pressing and the like.

8. The manufacturing method of the socket type corrugated reinforced double-flat-wall composite pipe according to claim 7, wherein the shape of the attaching cambered surface at the edge covering position of the pipe is matched with that of the compression roller device.

Technical Field

The invention relates to the technical field of pipes, in particular to a socket type corrugated reinforced double-flat-wall composite pipe and a manufacturing method thereof.

Background

The structural wall pipe is made of polyolefin by compression molding or thermal winding, and the general structure comprises a double-wall corrugated pipe and a winding structural wall pipe. The pipe is a novel acid-resistant, corrosion-resistant, compression-resistant and non-toxic green environment-friendly pipe, belongs to an environment-friendly and energy-saving high and new technology product, and is an ideal replacement product for pipes such as cement pipes, cast iron pipes, glass pipes and the like. How to make the structure wall tubular product have fine pliability and whole external pressure resistance ability, when having under overweight load road surface to use, guarantee that current safety is the factor that tubular product design was considered first. In application, the reliability of the project using the structural wall pipe under the same condition is improved compared with the traditional pipe, the comprehensive benefit is obvious, and the method has more superiority particularly in the construction site with narrow construction site, dense buildings, complex underground pipelines and busy road sections and in the acid-base soil laying process. Because the structural wall pipe has a plurality of excellent performances, the pipe can be widely applied to municipal drainage, building outdoor drainage, buried farmland water delivery and drainage, industrial pollution discharge, road drainage, sewage treatment plants, playground square engineering drainage, electric telecommunication engineering and the like.

The conventional structural wall pipe includes an inner plane outer corrugated double-wall corrugated pipe, a structural wall winding pipe B-type pipe (a structural wall pipe having an irregular outer shape), and a hollow structural wall winding pipe a-type pipe (a structural wall pipe having a smooth inner and outer surface) having an inner plane and an outer plane.

A high-density polyethylene (HDPE) double-wall corrugated pipe is a novel pipe with an outer wall with an annular corrugated structure and a smooth inner wall. High Density Polyethylene (HDPE) has excellent chemical stability, aging resistance, and environmental stress cracking resistance. The HDPE double-wall corrugated pipe with a certain length can be slightly bent axially and is not influenced by the uneven settlement of the ground to a certain degree. The outer wall of the double-wall corrugated pipe is of an annular corrugated structure, so that the annular rigidity of the pipe is greatly enhanced, the resistance of the pipe to soil load is enhanced, and the HDPE double-wall corrugated pipe has obvious advantages compared with other pipes in the aspect of performance. Under the condition of the same load, the HDPE double-wall corrugated pipe only needs a thinner pipe wall to meet the requirement. Therefore, compared with a solid-wall phase tube with the same material specification, the material can be saved by about half. The double-wall corrugated pipe has the advantages of light weight, less material consumption, high strength, high production efficiency, one-step formed socket joint and the like, and is a plastic pipe with the highest cost performance. However, the double-wall corrugated pipe has the defects that the outer wall of the pipe is easy to be ripped, broken and sunken due to dragging or impact during transportation and construction, the construction backfill abdomen is difficult to fill, and the like. The traditional hollow structure wall winding pipe A-shaped pipe with smooth inner and outer planes can overcome the defects of inconvenient transportation and construction, but the hollow structure wall winding pipe A-shaped pipe is heavy in weight and large in material consumption; moreover, as is well known, the production equipment efficiency of the hollow structure wall winding pipe A type pipe with the inner plane and the outer plane is low, the process controllability is poor, the cold welding mode of firstly extruding the square pipe for cooling and shaping and then extruding the melt adhesive for welding has stress and hidden danger of layering, no joint exists during production, other connection modes need to be adopted, the production period is long, the production process is complex, and a lot of unpredictable risks exist.

There is a need for improvement.

Disclosure of Invention

Aiming at the defects in the prior art, one of the purposes of the invention is to provide a socket joint type corrugated reinforced double-flat-wall composite pipe which has the advantages of light weight, less material consumption, high strength and high production efficiency, and can overcome the defects that the double-wall corrugated pipe is inconvenient to drag and roll and is difficult to backfill during laying; the second objective of the present invention is to provide a manufacturing method of the above socket-type corrugated reinforced double-flat-wall composite pipe.

In order to realize the purpose, the following technical scheme is provided:

a socket joint type corrugated reinforced double-flat-wall composite pipe comprises a double-wall corrugated pipe main body and a bellmouth integrally arranged at one end of the double-wall corrugated pipe main body, wherein a spigot connection section is arranged at one end, away from the bellmouth, of the double-wall corrugated pipe main body, the double-wall corrugated pipe main body and the bellmouth respectively comprise an inner flat-wall layer and a corrugated reinforcing layer, and the outer wall of the corrugated reinforcing layer is provided with wave crests and wave troughs,

optionally, the outer flat wall layer is wrapped inwards along the cambered surfaces connecting the wave crests and the wave troughs at the middle position of the socket connecting section.

Optionally, at least one wave trough of the socket connecting section which is not wrapped by the outer flat wall layer is provided with a sealing rubber ring.

Optionally, the material of the inner flat wall layer and the corrugated reinforcing layer is made of high density polyethylene, polypropylene, polyvinyl chloride or alloy material thereof.

Optionally, the material of the outer flat wall layer is made of high density polyethylene, polypropylene, ABS, PET or alloy material thereof.

A manufacturing method of a socket type corrugated reinforced double-flat-wall composite pipe comprises the following steps:

(1) plasticizing the raw material by a corrugated pipe extruder, feeding the raw material into a corrugated pipe forming machine for mould pressing blow molding, cooling, cutting off and placing the raw material in a first stinger to form a double-wall corrugated pipe;

(2) one end of the cut pipe is heated in a rotating mode, flared and formed, and cooled to form the inserted double-wall corrugated pipe;

(3) pushing the socket type double-wall corrugated pipe to a cladding device by a tractor to clad to form an outer flat wall layer, and cutting to form a socket type corrugated reinforced double-flat-wall composite pipe which is not clad and is placed on a second stinger;

(4) and (3) using a wrapping device to wrap the edge of the outer flat wall layer of the socket type corrugated reinforced double-flat-wall composite pipe which is not wrapped.

Optionally, the device of borduring includes support, heating device, compression roller device, rotatory support anchor clamps, rotating electrical machines, when borduring, overlaps the outside at the device anchor clamps of borduring with tubular product socket linkage segment, locks tubular product and rotatory support anchor clamps, opens rotating electrical machines, drives rotatory support anchor clamps rotatory, and then drives the tubular product rotatory, opens heating device, treats that tubular product outer flat wall layer edge softens the back gradually, pushes down the compression roller device, through rotate, add nice and warm, push down operation such as with outer flat wall layer edge cladding gradually on the cambered surface of socket linkage segment connection crest and trough.

Optionally, the shape of the joint cambered surface of the wrapping part of the compression roller and the pipe of the compression roller device is matched.

After adopting the structure, compared with the prior art, the invention has the advantages that: the invention has simple structure, light weight, less material consumption, high strength, high production efficiency, convenient dragging and rolling and dense backfill during laying.

Drawings

FIG. 1 is a schematic cross-sectional view of a socket-and-spigot corrugated reinforced double-flat-wall composite pipe of the present invention before being edged;

FIG. 2 is a schematic cross-sectional view of the socket-and-spigot corrugated reinforced double-flat-wall composite pipe after edge wrapping;

FIG. 3 is a schematic view of the connection structure of the bell mouth and the spigot connection section of the socket type corrugated reinforced double-flat-wall composite pipe of the invention.

FIG. 4 is a schematic structural view of the edge covering device for edge covering processing of the socket type corrugated reinforced double-flat-wall composite pipe of the present invention

Fig. 5 is a schematic view of a prior art double-walled bellows socket.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 5 shows a schematic view of a prior art double-walled corrugated pipe socket having a corrugated structure. The existing double-wall corrugated pipe comprises a double-wall corrugated pipe main body 1 and a socket 11 integrally arranged at one end of the double-wall corrugated pipe main body 1, wherein one end, far away from the socket 11, of the double-wall corrugated pipe main body 1 is provided with a socket connecting section 12, the double-wall corrugated pipe main body 1 and the socket 12 both comprise an inner flat wall layer 2 and a corrugated reinforcing layer 3, and the outer wall of the corrugated reinforcing layer 3 is provided with a wave crest 32 and a wave trough 31.