CN204704496U - A kind of HDPE strengthens without steel strip winding waste pipe - Google Patents

Abstract

The utility model provides a kind of HDPE to strengthen without steel strip winding waste pipe, and this waste pipe comprises the coaxial inner and outer tubes arranged, and is connected between described interior pipe and described outer tube by stiffening rib, adopts high-density polyethylene material to make.Together, its thickness is 2 ~ 5cm for the thickness of stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.Bayonet joint is adopted between described waste pipe and other waste pipes.Outer tube is non-planomural, and outer tube has inverted T-shape structure.Waste pipe of the present utility model can reach the requirement of various ring stiffness and ring flexibility, also need not various metal composite, by the change of structure, and these defects of other tubing before the improvement of production technology just can thoroughly solve.

Description

A kind of HDPE strengthens without steel strip winding waste pipe

Technical field

The utility model relates to technical field of drainage, is specifically related to a kind of HDPE and strengthens without steel strip winding waste pipe.

Background technique

Along with the further deterioration of land resources, the progressively expansion of urban size, the collection of rainwater is recycled, the problems such as the discharge of sewage become increasingly conspicuous, the safe handling of waste pipe is also more and more paid attention to by everybody, various tubing becomes out not poor, but often there is such-and-such problem, such as, common double-wall corrugated pipe, ring stiffness is low, be not suitable with the needs of complex-terrain, steel strip reinforced plastic steel pipe, bellows, plain-wall pipe, although ring stiffness increases, but due to plastics and steel band compound, plastics are oxygen permeability materials, the environment few year being embedded in underground humidity will break down in corrosion.

Introduce the kind of drainage pipe in prior art below and compare:

1, metal tube

Conventional metal tube has cast iron tube and steel pipe.Gravity drainage pipeline is little employing metal tube generally, only have press when drainage pipe bears in height, high external pressure or extra high place is required to seepage, as the turnover water pipe of drainage pumping plant, railroad crossing and river course inverted siphon or near feedwater piping and house foundation time, just adopt metal tube.The advantage of cast iron tube is durable in use, has stronger corrosion resistance, and shortcoming is that quality is more crisp, and shock-sensitive dynamic and bending, weight is larger.The feature of steel pipe be high pressure resistant, vibration resistance, length that is lightweight, single tube are large and interface convenient, but price is higher, the ability of opposing acid and alkali corrosion and water logging erosion.

2, vitrified-clay pipe

Vitrified-clay pipe is fired by soft clay to form.The advantage of vitrified-clay pipe is wear-resistant, anticorrosive, and being applicable to get rid of outside sour waste water or pipe has erosion underground sewer.Shortcoming is that matter is crisp frangible, and can not bear interior pressure, interface is more, current domestic less employing.

3, concrete pipe

Concrete pipe is widely used in sewerage system, have convenient for production, cost is low, expend the few feature of steel, is generally divided into prestressed reinforced concrete pipe, seif-citing rate concrete reinforced pipe, Prestressed concrete cylinder pipe, concrete reinforced pipe, common concrete pipe etc.The shortcoming of concrete pipe is antiacid, alkali etch and impermeability is poor, tube coupling is short, joint is many, construction is complicated, should not lay in seismic region or weak soil matter area.

4, plastic tube

Oneself is through being widely used abroad for plastic tube, and also start at home to be in recent years used in large quantities, reason is just that plastic tube all has obvious superiority on following six performance requirements:

1) strength and stiffness: under correct design and laying construction, plastic tube is with the soil of surrounding (real pressure after) share load, i.e. so-called " pipeclay acting in conjunction ", so plastic buried pipe does not need too large intensity and rigidity just can meet the requirement of Long-Time Service.

2) in hydraulic characteristic, plastic pipe inner wall is smooth, and resistance is little, flow is large.

3) in sealing: plastic tube adopts Placement to connect as spigot and socket type, Flange joint, shrink belt, can ensure that leakage rate is less than 1%.

4) working life and corrosion-resistant in: the advantage of plastic tube is more outstanding, and the life-span is 50 years ~ 100 years.

5) in laying construction: the requirement of plastic tube to pipe trench is low, and Placement is convenient, construction is fast, and operating expenses is low.

6) on overall cost, the unit price of plastic tube is higher than metal tube, concrete pipe, vitrified-clay pipe, but plastic tube short construction period, engineering cost is lower.

Plastic tube can be divided into solid wall pipe and the large class of structured wall popes two.Plastic construction wall pipe is divided into three major types from structural form: ripple type pipe, ring-type ribbed pipe (riffled tube), I-shaped die pipe (two flat walls entwining tube), its kind has PVC riffled tube, Double-wall PVC bellows, HDPE double-wall corrugated pipe, HDPE entwining tube, HDPE steel-plastic composite pipe etc. by material difference.Plastics solid wall pipe has pvc pipe, PE pipe and glass reinforced plastic sand pipe etc.

In structured wall popes, corresponding different types of structural walls, its process equipment and processing technology are also had nothing in common with each other, and one is direct extrusion molding (as bellows etc.), and another kind is wound around fusion molding (as various forms of entwining tube).According to external experience, the structured wall popes of direct extrusion molding is mainly applied in the buried drain pipe field that diameter is less, and Wrapping formed structured wall popes is mainly used in the heavy caliber scope being not suitable for direct extrusion molding.

PVC riffled tube:

PVC riffled tube is the pvc pipe with radial reinforced rib on pipe outer wall, has both been thinned pipe thickness and has turn improved the ability that tubing bears external load, and comparable common solid wall pipe saves the material of more than 30%.PVC riffled tube has the advantages such as intensity high (ring stiffness is greater than 8KN/m2), comprehensive cost are low, lightweight, but its special producing technique is only suitable for producing minor caliber pipe (<DN600mm).

PVC bellows:

PVC bellows adopts direct extrusion molding, and tube wall longitudinal section is made up of double-layer structure, and skin is corrugated, and internal layer is smooth.This tubing economizes 40% raw material than common PVC tube coupling, and has and bear external load ability preferably.Owing to limiting by raw-material processibility, its maximum caliber is DN600mm.

Glass reinforced plastic sand pipe:

Glass reinforced plastic sand pipe is made up of inside liner, winding layer, resin clip layer of sand and external anti-corrosion layer, and it has the features such as lightweight, good corrosion resistance, hydraulic performance are excellent.The shortcoming of glass reinforced plastic sand pipe is: 1) critical external compressive resistance ability is lower, usually will be pressed into flat ellipticity in advance buried again, to bear external load and earth pressure; 2) jointing easy to leak; 3) cost is higher.Glass reinforced plastic sand pipe is applicable to medium-large caliber pipeline (DN600 ~ 2800mm) and is used as drainage pipe in corrosive ground.

HDPE bellows:

HDEP bellows is that HDPE is extruded jointly by inside and outside extruder respectively, once-through, interior walls be smooth, and outer wall is trapezoidal ripple, has the plastic tube of double wall voided layer between inside and outside wall.Bellows pipe with small pipe diameter has superiority, and Large Diameter Pipeline ring stiffness is difficult to reach designing requirement, increases steel band and there will be shelling phenomenon, affect pipe workpiece quality.

HDPE steel-plastic composite pipe:

HDPE steel-plastic composite pipe (two flat walls) be with HDPE and Galvanized Steel Strip for raw material, be wound around on pipeline shaper with strip and be fused into pipeline.HDPE is shaped to two T-shaped strips, and zinc-plating material is W type and is embedded in the groove between two PE strips, then on periphery is coated PE material.Double-flat wall steel-plastic composite pipe has higher ring stiffness, lightweight, transport and the advantage such as construction cost is low.Its shortcoming is: 1) steel-plastic composite pipe cutting mouth exposes steel, needs manual encapsulation process, adds complex manufacturing degree.Once seal improper, the extent of corrosion of steel can be increased.2) ring flexibility is poor, cannot recover after pipe deformations.

Model utility content

In order to solve the problems referred to above that prior art exists, the utility model provides a kind of HDPE to strengthen without steel strip winding waste pipe, and described HDPE to strengthen without steel strip winding waste pipe without the need to various metal composite, overcomes use steel band and to gain in strength the defect of easy corrosion.

The technical solution of the utility model is:

A kind of HDPE strengthens without steel strip winding waste pipe, comprises the coaxial inner and outer tubes arranged, is connected between described interior pipe and described outer tube by stiffening rib.

Described stiffening rib is one or two, and described stiffening rib is spirally wound between described interior pipe and described outer tube.

Described stiffening rib is cyclic reinforcing rib, and the quantity of described stiffening rib is several, and these stiffening ribs are evenly arranged along the axial direction of described waste pipe.

Together, its thickness is 2 ~ 5cm for the thickness of described stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.

The pitch of described stiffening rib is 5 ~ 10cm.

Described a kind of HDPE strengthens without steel strip winding waste pipe, adopts high-density polyethylene material to make.

Bayonet joint is adopted between described waste pipe and other waste pipes.

The beneficial effects of the utility model are:

(1) the utility model overcomes other tubing and first produces pipe racks, and then compound molding, and because the temperature difference causes sticky and loosely, manufacturing efficiency is low; The whole once-through of this design, solid and reliable, manufacturing efficiency improves greatly.

(2) socket joint connection sealing is overcome unstable.Present Placement can overcome above all drawbacks.

(3) overcome other tubing and first produce pipe racks, and then compound molding, because the temperature difference causes sticky and loosely, manufacturing efficiency is low.

(4) waste pipe of the present utility model can reach the requirement of various ring stiffness and ring flexibility, also need not various metal composite, by the change of structure, and these defects of other tubing before the improvement of production technology just can thoroughly solve.

Accompanying drawing explanation

Fig. 1 is that a kind of HDPE of the utility model embodiment 1 strengthens without steel strip winding drain structure schematic diagram;

Fig. 2 is that the A-A of Fig. 1 is to sectional view;

Fig. 3 is the connection structure for drain-pipe schematic diagram of the utility model embodiment 2 or 3, wherein, 1-hangnail, 2 is cushion rubber;

Fig. 4 is the schematic diagram that the stiffening rib of the utility model embodiment 1 is wound around, pipe in 3-, 4-stiffening rib.

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is described in detail.

Embodiment 1

A kind of HDPE as shown in Figure 1 strengthens without steel strip winding waste pipe, comprises the coaxial inner and outer tubes arranged, is connected between described interior pipe and described outer tube by stiffening rib.Waste pipe adopts high-density polyethylene material HDPE to make.

As shown in Figure 4, stiffening rib is one and stiffening rib 4 is spirally wound between interior pipe 3 and described outer tube, and the pitch of described stiffening rib is 5 ~ 10cm.

Together, thickness is 5cm for the thickness of stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.

As shown in Figure 2, outer tube is non-planomural, and outer tube has inverted T-shape structure.

Embodiment 2

A kind of HDPE as shown in Figure 1 strengthens without steel strip winding waste pipe, comprises the coaxial inner and outer tubes arranged, is connected between described interior pipe and described outer tube by stiffening rib.Waste pipe adopts high-density polyethylene material HDPE to make.

Stiffening rib is two and described stiffening rib is spirally wound between described interior pipe and described outer tube, and the pitch of described stiffening rib is 5 ~ 10cm.

Together, thickness is 3.5cm for the thickness of stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.

As shown in Figure 2, outer tube has inverted T-shape structure.

Adopt bayonet joint between waste pipe and other waste pipes, described bayonet joint be between two waste pipes in the outer wall of one end of one of them pipe coordinate with the inwall of one end of another pipe, namely two waste pipes are nested together.

Embodiment 3

A kind of HDPE as shown in Figure 1 strengthens without steel strip winding waste pipe, comprises the coaxial inner and outer tubes arranged, is connected between described interior pipe and described outer tube by stiffening rib.Waste pipe adopts high-density polyethylene material HDPE to make.

Stiffening rib is cyclic reinforcing rib, and quantity is several, and these stiffening ribs are evenly arranged along the axial direction of described waste pipe, and the distance between two adjacent stiffening ribs is 2 ~ 5cm.

Together, thickness is 2cm for the thickness of stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.

As shown in Figure 2, outer tube has inverted T-shape structure.

As shown in Figure 3, between waste pipe and other waste pipes, adopt bayonet joint, described bayonet joint be between two waste pipes in the outer wall of one end of one of them pipe coordinate with the inwall of one end of another pipe, namely two waste pipes are nested together.

Socket hot-melting connection construction cannot be with water to construct slowly, therefore utilizes hangnail 1 during bayonet joint, cushion rubber 2 connects.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technological scheme, all drops within protection domain of the present utility model.

Claims (6)

1. a HDPE strengthens without steel strip winding waste pipe, comprise the coaxial inner and outer tubes arranged, connected by stiffening rib between described interior pipe and described outer tube, it is characterized in that, described stiffening rib is one or two, and described stiffening rib is spirally wound between described interior pipe and described outer tube.

2. a kind of HDPE according to claim 1 strengthens without steel strip winding waste pipe, and it is characterized in that, described stiffening rib is cyclic reinforcing rib, and the quantity of described stiffening rib is several, and these stiffening ribs are evenly arranged along the axial direction of described waste pipe.

3. a kind of HDPE according to claim 1 strengthens without steel strip winding waste pipe, it is characterized in that, together, its thickness is 2 ~ 5cm for the thickness of described stiffening rib, interior tube thickness, outer tube thickness homogeneous phase.

4. a kind of HDPE according to claim 2 strengthens without steel strip winding waste pipe, and it is characterized in that, the pitch of described stiffening rib is 5 ~ 10cm.

5. a kind of HDPE according to claim 1 strengthens without steel strip winding waste pipe, it is characterized in that, adopts high-density polyethylene material to make.

6. a kind of HDPE according to claim 1 strengthens without steel strip winding waste pipe, it is characterized in that, adopts bayonet joint between described waste pipe and other waste pipes.