CN1099540C - Plastic water pipe joint - Google Patents
Plastic water pipe joint Download PDFInfo
- Publication number
- CN1099540C CN1099540C CN00112704A CN00112704A CN1099540C CN 1099540 C CN1099540 C CN 1099540C CN 00112704 A CN00112704 A CN 00112704A CN 00112704 A CN00112704 A CN 00112704A CN 1099540 C CN1099540 C CN 1099540C
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- water pipe
- layer
- pipe
- joint body
- plastics
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Abstract
The present invention relates to a plastic joint for water pipes. The present invention comprises a tubular joint body. The present invention is characterized in that the tubular joint body comprises an inner pipe layer and an outer pipe layer, wherein the inner pipe layer is sheathed in the outer pipe layer; the outer pipe layer is made of polyvinyl chloride (PVC) plastics; the inner pipe layer is made of polgolefin plastics. The present invention realizes the firm connection of pipelines, ensures sufficient strength on connection parts, ensures the normal work of the pipelines, has no adverse effect on the water quality, and is suitable for being matched with a novel plastic composite water pipe.
Description
Technical field
The present invention relates to a kind of pipe fitting, especially a kind of water pipe adapter.
Background technique
Existing water pipe adapter can be divided into tee union, cross fitting, elbow, straight coupling etc. according to the shape difference of its tubular configured joint body, and its material is metal, unitary plastic or metal a---material.Existing water pipe adapter is common in the Placement of pipeline and is threaded, pressure ring locking is connected, hot melt connection and bonding etc., and various Placements respectively have its quality, and specifically Placement should be looked pipe features and chosen.The Chinese invention patent application provides a kind of novel plastic water supply pipe for No. 00112687.3, pipe layer and external tube layer in the body of this supply pipe has, pipe layer is placed within the external tube layer in it, and the inner and outer pipe layer is made by TPO plastics and PVC (PVC) plastics respectively.The PVC external tube layer of this supply pipe can guarantee that tubing has higher intensity, rigidity and weatherability, the interior pipe layer that its TPO plastics are made can guarantee that then current are not contaminated when flowing through pipeline, simultaneously, the manufacture cost of this supply pipe is lower and be suitable for making the heavy caliber pipe of 63～315mm than aluminium-plastic composite pipe.Above-mentioned supply pipe can either satisfy people's hygienic requirements higher to potable water, has lower manufacture cost again, thereby has preferable application prospect.But the problem of Ti Chuing is thus: should adopt the water pipe adapter and the supporting use of this supply pipe of which kind of structural type, can guarantee the proper functioning of pipeline and can not produce harmful effect water quality? China's utility application once disclosed a kind of fast-assembling pipe coupling for No. 94201138.4, this fast-assembling pipe coupling is mainly by three-way pipe, gland nut, seal ring, O-ring seal is formed, there is outside thread three terminations of three-way pipe, internal thread is arranged in the gland nut, O-ring seal and seal ring are taper type, one frustum is respectively arranged in three-way pipe termination and the gland nut, and the frustum of O-ring seal and seal ring partly divides and places in addition in each termination frustum of three-way pipe and the gland nut frustum.This pipe coupling is actually adopts the pressure ring locking mode to be connected with pipeline, and it is easy and simple to handle, and installation rate is fast, has certain advantage.But, for plastic tube, because plastics have creep properties, the pipe coupling of adopting the pressure ring locking mode to connect tends to produce loosening and cause fluid to let out cunning at joint in use for some time, so this pipe coupling and being unwell to the given large diameter pipeline of above-mentioned No. 00112687.3 application for a patent for invention is used.In addition, consider, be not easy to make screw thread on the large diameter pipeline that utilizes foregoing invention to make, therefore also be unwell to and adopt the water pipe adapter of worm structure to connect with it from preparation process and intensity.Because PVC is easily decomposed by high temperature, should not adopt hot melting way to be connected with water pipe adapter so contain the tubing of PVC.More than the analysis showed that, should not be to adopt pressure ring locking to be connected, to be threaded or hot melt water pipe connecting joint with the water pipe adapter that the supply pipe of above-mentioned No. 00112687.3 patent application adapts.Existing a kind of plastic water pipe joint is made by igelite, and the Placement of this water pipe adapter and pipeline adopts bonding.The igelite that constitutes this water pipe adapter is except that having higher intensity, rigidity and better weather, its adhesive property is also preferable, simultaneously, technique for sticking can not lower the intensity of pipeline, therefore, if this kind water pipe adapter is applied to can guarantee the normal use of pipeline in the feedwater piping with foregoing invention.But, should have water pipe adapter now, when current are flowed through water pipe adapter, can overflow harmful matter and moving in the water of the igelite that constitutes the tubular configured joint body, thereby the water quality to potable water produces harmful effect, therefore, should not directly above-mentioned existing water pipe adapter be applied in the pollution-free feedwater piping of above-mentioned No. 00112687.3 patent application.
Summary of the invention
The purpose of this invention is to provide a kind of proper functioning that can guarantee pipeline, can not produce dysgenic water pipe adapter again water quality.
Purpose of the present invention realizes in the following manner: allow the tubular configured joint body of plastic water pipe joint be made of inside and outside two layers of plastic, can the TPO plastics that water quality pollutes not served as the interior pipe layer of tubular configured joint body, serve as the external tube layer of tubular configured joint body with igelite with higher-strength, rigidity and weatherability.Specifically, plastic water pipe joint of the present invention has the tubular configured joint body, it is characterized in that described tubular configured joint body has interior pipe layer and external tube layer, and interior pipe layer is placed within the external tube layer, described external tube layer is made by PVC (PVC) plastics, and described interior pipe layer is made by the TPO plastics.In the present invention, the said polyolefins plastics can be existing multiple such plastics, as polypropylene (PP) (it is material modified to contain it) or polyethylene (PE) (it is material modified to contain it) or the polypropene blended plastics of polyethylene etc.Aforementioned tube straight coupling body among the present invention can only be made of above-mentioned inner and outer pipe layer, that is the tubular configured joint body only is made of two layers of material.But the present invention also is not precluded within the scheme that increases other material layer between the inner and outer pipe layer again.For example, can be in that one or more layers (more than two-layer or two-layer) mesosphere is set between the inner and outer pipe layer, to satisfy the property requirement of tubular configured joint body.Set mesosphere can be layer of adhesive material or other material layer.When between the inner and outer pipe layer, layer of adhesive material being set, can be with inner and outer pipe layer strong bond.Water pipe adapter of the present invention can adopt existing plastic injection-moulded technology to make.In the present invention, the tubular configured joint body can adopt existing multiple shape, thereby constitutes the water pipe adapter of threeway, four-way, elbow, form such as straight-through.When water pipe adapter of the present invention is connected with the plastic water supply pipe of aforementioned No. 00112687.3 patent application, both can allow the mouth of pipe of tubular configured joint body directly mutually bonding with the desire connecting end of plastic water supply pipe, can also make the mouth of pipe desire connecting end indirect and plastic water supply pipe of tubular configured joint body bonding by the coupling of peripheral hardware.Considering from the angle of simplifying attended operation, is good in a kind of mode before adopting.Because the internal layer of water pipe adapter of the present invention has adopted nontoxic polyolefin plastics, after finishing connection, the position that contacts with current in the water pipe adapter is nontoxic polyolefin plastics, thereby can guarantee that current are not contaminated when flowing through water pipe adapter.In addition, because the external tube layer of the desire connecting end of supply pipe and the external tube layer of this water pipe adapter are made by igelite, and igelite has preferable cementability, and the external tube layer that therefore can utilize the two is the two strong bond, and guarantees that bonding position has enough intensity.In the present invention, can also do further to improve, so that make the mouth of pipe of tubular configured joint body directly mutually bonding with the desire connecting end of plastic water supply pipe to the nozzle structure form of tubular configured joint body.For example, can make the spout part of the external tube layer that is positioned at tubular configured joint body mouth of pipe place exceed the spout part (spout part of the pipe layer of can also saying so is retracted within the spout part of external tube layer) of managing layer.Adopt after this structural type, when water pipe adapter is connected with plastic water supply pipe, wall outside the desire connecting end of plastic water supply pipe can be coated (wall gluing within the external tube layer of water pipe adapter simultaneously) in the mouth of pipe of inserting this water pipe adapter behind the viscose glue, allow wall contacts within the external tube layer of wall and this water pipe adapter outside the desire connecting end of plastic water supply pipe, and then make the PVC external tube layer of desire connecting end of supply pipe and the PVC external tube layer strong bond of this water pipe adapter.
Water pipe adapter of the present invention compared with the aforementioned existing similar products, can realize being connected with the firm of pipeline, allow connection part have enough intensity, guarantee the proper functioning of pipeline, can not produce harmful effect again, especially be suitable for cooperating the supply pipe of above-mentioned No. 00112687.3 patent application to use water quality.
Content of the present invention further illustrates with the following Examples, but the content of invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the structural representation of water pipe adapter among the embodiment 1.
Fig. 2 is the structural representation of water pipe adapter among the embodiment 2.
Fig. 3 is the structural representation of water pipe adapter among the embodiment 3.
Fig. 4 is the structural representation of water pipe adapter among the embodiment 4.
Fig. 5 is the structural representation of water pipe adapter among the embodiment 5.
Fig. 6 is the structural representation of water pipe adapter among the embodiment 6.
Embodiment
Embodiment 1:
As shown in Figure 1, plastic water pipe joint in the present embodiment has tubular configured joint body 1, pipe layer 2 and external tube layer 3 in described tubular configured joint body 1 has, and interior pipe layer 2 is placed within the external tube layer 3, described external tube layer 3 is made by PVC (PVC) plastics, described in pipe layer 2 make by the TPO plastics.In the present embodiment, the shape of tubular configured joint body 1 adopts the shape of tee union, i.e. water pipe adapter in this example is the Three way type water pipe adapter.The pipe layer 2 TPO plastics that is adopted are polypropylene (PP) plastics in making in this example.When the water pipe adapter with present embodiment is connected with plastic water supply pipe 6, can utilize the coupling (PVC short tube) 9 of peripheral hardware to be placed on the mouth of pipe of tubular configured joint body and outer wall and the applying glue that supply pipe is desired connecting end, allow the inwall of coupling 9, the mouth of pipe outer wall and the supply pipe outer wall of tubular configured joint body be bonded as one.Because the external tube layer 7 of the desire connecting end of supply pipe and the external tube layer of this water pipe adapter 3 are made by PVC, it is hereby ensured the connection part strong bond and have enough intensity.Simultaneously, the position that contacts with current in the water pipe adapter is all covered by pipe layer 2 in the nontoxic polyolefin, thereby can guarantee that current are not contaminated when flowing through water pipe adapter.
Embodiment 2:
As shown in Figure 2, the water pipe adapter in the present embodiment is similar to embodiment 1, and different is that the spout part 4 that is positioned at the external tube layer at tubular configured joint body mouth of pipe place in the present embodiment exceeds the spout part 5 of managing layer.Like this, when water pipe adapter and plastic water supply pipe join, can not re-use the coupling of peripheral hardware, and wall outside the desire connecting end of plastic water supply pipe 6 can be coated in the mouth of pipe of the tubular configured joint body 1 of inserting this water pipe adapter behind the viscose glue, allow wall close adhesion within the external tube layer 3 of wall and this water pipe adapter outside the desire connecting end of plastic water supply pipe 6.Because the external tube layer 7 of the desire connecting end of supply pipe and the external tube layer of this water pipe adapter 3 are made by PVC, it is hereby ensured the connection part strong bond and have enough intensity.
Embodiment 3:
As shown in Figure 3, water pipe adapter in the present embodiment is similar to embodiment 2, different is, present embodiment edge within the spout part of interior pipe layer is provided with the circular step 8 to aftershrinkage, this circular step 8 to aftershrinkage can digest within the supply pipe between the igelite of the polyolefin plastics of pipe layer and external tube layer because of the different deformation difference that cause of linear expansion coeffcient, avoids because of the accumulation of above-mentioned deformation difference whole waterline being produced harm.When waterline was longer, the said structure design was especially necessary.In addition, making interior TPO plastics of managing layer 2 in this example is polyethylene (PE) plastics.
Embodiment 4:
As shown in Figure 4, the water pipe adapter in the present embodiment is except that the shape of tubular configured joint body 1 and embodiment 3 are different, and remaining part is all identical with embodiment 3.In the present embodiment, tubular configured joint body 1 has adopted the shape of equal coupling joint, i.e. water pipe adapter in this example is the water pipe adapter of equal coupling formula.
Embodiment 5:
As shown in Figure 5, the water pipe adapter in the present embodiment is except that the shape of tubular configured joint body 1 and embodiment 3 are different, and remaining part is all identical with embodiment 3.In the present embodiment, tubular configured joint body 1 has adopted the shape of reducing straight coupling, i.e. water pipe adapter in this example is the water pipe adapter of reducing straight-through type.
Embodiment 6:
Similar with embodiment 5, the water pipe adapter in the present embodiment is except that the shape of tubular configured joint body 1 and embodiment 3 are different, and remaining part is all identical with embodiment 3.In the present embodiment, tubular configured joint body 1 has adopted the shape of bending head type joint, i.e. water pipe adapter in this example is the bending head type water pipe adapter, and the structure of this joint as shown in Figure 6.
Claims (4)
1, a kind of plastic water pipe joint has the tubular configured joint body, it is characterized in that described tubular configured joint body have in pipe layer and external tube layer, interior pipe layer is placed within the external tube layer, described external tube layer is made by igelite, described in the pipe layer make by the TPO plastics.
2, plastic water pipe joint as claimed in claim 1 is characterized in that described TPO plastics are polypropylene plastics.
3, plastic water pipe joint as claimed in claim 1 is characterized in that described TPO plastics are polyvinyl plastics.
4, plastic water pipe joint as claimed in claim 1, the spout part that it is characterized in that being positioned at the external tube layer at tubular configured joint body mouth of pipe place exceeds the spout part of managing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112704A CN1099540C (en) | 2000-02-24 | 2000-02-24 | Plastic water pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112704A CN1099540C (en) | 2000-02-24 | 2000-02-24 | Plastic water pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1264006A CN1264006A (en) | 2000-08-23 |
| CN1099540C true CN1099540C (en) | 2003-01-22 |
Family
ID=4582545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00112704A Expired - Fee Related CN1099540C (en) | 2000-02-24 | 2000-02-24 | Plastic water pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099540C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102787A (en) * | 2011-02-21 | 2011-06-22 | 河北建投宝塑管业有限公司 | Flexible composite connection pipe fitting for large-aperture plastic pipeline |
| CN107237933A (en) * | 2017-07-14 | 2017-10-10 | 芜湖威灵数码科技有限公司 | A kind of closed rotary connecting joint with self-adjusting structure |
| CN111251634A (en) * | 2018-11-30 | 2020-06-09 | 上海英泰塑胶股份有限公司 | Pipe externally wound continuous fiber prepreg tape reinforced inclined joint elbow and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3814410A1 (en) * | 1988-04-28 | 1989-11-09 | Kabelmetal Electro Gmbh | Connection arrangement for plastic pipes |
| JPH03282088A (en) * | 1990-03-29 | 1991-12-12 | Sumitomo Metal Ind Ltd | Coupling for plastic pipe |
| US5143407A (en) * | 1991-02-25 | 1992-09-01 | Emmet Cokeh | Pipe coupling with copper sleeve engaging copper lined pipe |
| US5611373A (en) * | 1995-04-27 | 1997-03-18 | Handy & Harman Automotive Group, Inc. | Laminated fuel line and connector |
| CH688206A5 (en) * | 1991-12-10 | 1997-06-13 | Raimund Harreither | Heating tubes |
| JP3282088B2 (en) * | 1995-08-10 | 2002-05-13 | 株式会社ケーヒン | Method and apparatus for manufacturing fluid flow control jet |
-
2000
- 2000-02-24 CN CN00112704A patent/CN1099540C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3814410A1 (en) * | 1988-04-28 | 1989-11-09 | Kabelmetal Electro Gmbh | Connection arrangement for plastic pipes |
| JPH03282088A (en) * | 1990-03-29 | 1991-12-12 | Sumitomo Metal Ind Ltd | Coupling for plastic pipe |
| US5143407A (en) * | 1991-02-25 | 1992-09-01 | Emmet Cokeh | Pipe coupling with copper sleeve engaging copper lined pipe |
| CH688206A5 (en) * | 1991-12-10 | 1997-06-13 | Raimund Harreither | Heating tubes |
| US5611373A (en) * | 1995-04-27 | 1997-03-18 | Handy & Harman Automotive Group, Inc. | Laminated fuel line and connector |
| JP3282088B2 (en) * | 1995-08-10 | 2002-05-13 | 株式会社ケーヒン | Method and apparatus for manufacturing fluid flow control jet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1264006A (en) | 2000-08-23 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |