CN201680074U - Screw-locked double-hot-melting steel-plastic composite pipe fitting - Google Patents
Screw-locked double-hot-melting steel-plastic composite pipe fitting Download PDFInfo
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- CN201680074U CN201680074U CN2010201432599U CN201020143259U CN201680074U CN 201680074 U CN201680074 U CN 201680074U CN 2010201432599 U CN2010201432599 U CN 2010201432599U CN 201020143259 U CN201020143259 U CN 201020143259U CN 201680074 U CN201680074 U CN 201680074U
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- pipe fitting
- plastic body
- plastic
- metallic sheath
- thread
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Abstract
The utility module discloses a screw-locked double-hot-melting steel-plastic composite pipe fitting, which belongs to pipeline connecting auxiliary parts and comprises a first pipe fitting and a second pipe fitting. The first pipe fitting is provided with a first threaded connecting end, the first threaded connecting end including a first plastic body and a first metal sleeve forms first internal threads on the first plastic body and second internal threads on the first metal sleeve, and the first internal threads are positioned on the inner sides of the second internal threads. The second pipe fitting is provided with a second threaded connecting end including a second plastic body and a second metal sleeve, the second threaded connecting end forms first external threads on the second plastic body and second external threads on the second metal sleeve, and the first external threads are positioned on the outer sides of the second external threads. When the steel-plastic composite pipe fitting is connected, the first pipe fitting and the second pipe fitting are preliminarily connected to the end of a pipe by a double-hot-melting connecting mode, and the connection of the composite pipe fitting is completed by further connecting the first pipe fitting with the second pipe fitting by the aid of the connection of the first threaded connecting end with the second threaded connecting end, thereby being convenient in operation.
Description
Technical field
The utility model relates to a kind of pipeline connection fittings, the two hot melt composite steel-plastic pipe fittings of especially a kind of screw thread formula.
Background technique
Plastic tube that connects by two hot melts or composite metal-plastic pipe (as internal and external layer be plastics, mesosphere be metal three-decker and outer for metal, internal layer be the double-layer structure of plastics), it conveniently is better than traditional metal tube (as galvanized pipe) at anticorrosion, antirust, anti-plugging etc.But when connecting at the scene, the hot melt mould need be brought to the erecting bed to the pipe fitting of two hot melts with can realize again being connected after pipe heats, yet, in real work, be not all to be convenient to the hot melt mould is brought to the erecting bed, during as operation when the high-lift operation, in narrow and small furred ceiling, just be not easy to carry out two hot melts and connect, therefore make the plastic tube or the applying of composite metal-plastic pipe that connect by two hot melts be restricted.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition be overcome the plastic tube that is connected by two hot melts or composite metal-plastic pipe in the high-altitude, the defective that connects of erecting bed inconvenience such as narrow and small, provide a kind of screw thread formula two hot melt composite steel-plastic pipe fittings, change the Placement of plastic tube or composite metal-plastic pipe in order to the end that this joint is connected pipe.For this reason, the utility model is by the following technical solutions:
The two hot melt composite steel-plastic pipe fittings of screw thread formula comprise first pipe fitting and second pipe fitting, it is characterized in that:
Described first pipe fitting is entrenched in by first metallic sheath and forms wholely on first plastic body, and this first pipe fitting has the first welding end and first that is communicated with by first inner passage end that is spirally connected: the described first welding end comprises by described first plastic body and forms first internal ring wall, first external annulus and first birdsmouth between described first internal ring wall and first external annulus; Described first be spirally connected the end form by described first plastic body, first metallic sheath, on described first plastic body, form first internal thread, form second internal thread on described first metallic sheath, described first internal thread is positioned at the inboard of second internal thread;
Described second pipe fitting is entrenched in by second metallic sheath and forms wholely on second plastic body, and this second pipe fitting has the second welding end and second that is communicated with by second inner passage end that is spirally connected: the described second welding end comprises by described second plastic body and forms second internal ring wall, second external annulus and second birdsmouth between described second internal ring wall and second external annulus; Described second be spirally connected the end form by described second plastic body, second metallic sheath, on described second plastic body, form first outside thread, form second outside thread on described second metallic sheath, described first outside thread is positioned at the second externally threaded outside;
Described first inner passage is formed by first plastic body; Described second inner passage is formed by second plastic body.
The beneficial effects of the utility model are: can be with first pipe fitting of the two hot melt composite steel-plastic pipe fittings of this screw thread formula and second pipe fitting is connected plastic tube or composite metal-plastic pipe earlier by two hot melt ways of connecting end, be spirally connected being connected first pipe fitting and second pipe fitting being linked together of end by first end and second that is spirally connected again, be convenient to operate.Need the hot melt mould is brought to the operating type of erecting bed when connecting with respect to two hot melts, the utility model then is not subjected to the restriction of operation field to the change of plastic tube or composite metal-plastic pipe Placement.
And, by metallic sheath being set and screw thread being set, guarantee first pipe fitting and the intensity of second pipe fitting by being threaded on metallic sheath.
Description of drawings
Fig. 1 is the cross-sectional view that the two hot melts of first pipe fitting of the present utility model connect composite metal-plastic pipe.
Fig. 2 is the cross-sectional view that the two hot melts of second pipe fitting of the present utility model connect composite metal-plastic pipe.
Fig. 3 is the cross-sectional view that first pipe fitting of the present utility model, second pipe fitting link together.
The number in the figure explanation:
1-first pipe fitting, 11-first metallic sheath, 12-first plastic body, 13-first inner passage, the 14-first welding end, 15-first end that is spirally connected, 16-first internal ring wall, 17-first external annulus, 18-first birdsmouth, 19-first internal thread, 110-second internal thread, 111-strengthens edge, the 112-exhaust port, the 113-annular groove, 114-axial support surface, 115-seal ring;
2-second pipe fitting, 21-second metallic sheath, 22-second plastic body, 23-second inner passage, the 24-second welding end, 25-second end that is spirally connected, 26-second internal ring wall, 27-second external annulus, 28-second birdsmouth, 29-first outside thread, 210-second outside thread, 211-strengthens edge, 212-exhaust port, 213-annular groove;
31,32-pipe; 41,42-lid; 51, the molten knurl of 52-; 61,62-neck bush.
Embodiment
Below in conjunction with specification the utility model is described further.
The two hot melt composite steel-plastic pipe fittings of screw thread formula of the present utility model comprise first pipe fitting 1 and second pipe fitting 2:
As shown in Figure 1, first pipe fitting 1 is formed whole on first plastic body 12 by first metallic sheath 11 chimeric (during as injection moulding place in the mould with plastic injection-moulded as inserts become inseparable integral body with first metallic sheath), this first pipe fitting 1 has the first welding end 14 and first that is communicated with by first inner passage 13,15: the first welding ends 14 of end that are spirally connected and comprises by first plastic body 12 and form first internal ring wall 16, first external annulus 17 and first birdsmouth 18 (referring to Fig. 3) between first internal ring wall 16 and first external annulus 17; First end 15 that is spirally connected is formed jointly by first plastic body 12, first metallic sheath 11, forms first internal thread 19 on first plastic body 12, and formation second internal thread 110, the first internal threads 19 are positioned at the inboard of second internal thread 110 on first metallic sheath 11;
As shown in Figure 2, second pipe fitting 2 is formed whole on second plastic body 22 by second metallic sheath 21 chimeric (same during as injection moulding place in the mould with plastic injection-moulded as inserts become inseparable integral body with first metallic sheath), this second pipe fitting 2 has the second welding end 24 and second by 23 connections of second inner passage and is spirally connected and holds 25: the second welding ends 24 to comprise by second plastic body 22 to form second internal ring wall 26, second external annulus 27 and second birdsmouth 28 (referring to Fig. 3) between second internal ring wall 26 and second external annulus 27; Second end 25 that is spirally connected is formed by second plastic body 22, second metallic sheath 21, forms first outside thread 29 on second plastic body 22, and formation second outside thread 210, the first outside threads 29 are positioned at the outside of second outside thread 210 on second metallic sheath 21;
First inner passage 13 is formed by first plastic body 12; Second inner passage 23 is formed by second plastic body 21.
Utilize the two hot melt composite steel-plastic pipe fitting connecting tube period of the day from 11 p.m. to 1 a.m of screw thread formula of the present utility model, be connected to pipe 31,32 (plastic tube or composite metal-plastic pipe) in second birdsmouth 28 of first birdsmouth 18 of first pipe fitting 1 and second pipe fitting 2 by two hot melt ways of connecting as shown in Figure 1, 2, be spirally connected being connected first pipe fitting 1 and second pipe fitting 2 being linked together of end 25 by first end 15 and second that is spirally connected as shown in Figure 3 again, be convenient to operate.Need the hot melt mould is brought to the operating type of erecting bed when connecting with respect to two hot melts, the utility model then is not subjected to the restriction of operation field to the change of plastic tube or composite metal-plastic pipe Placement.Be corroded in order to prevent the medium in first metallic sheath 11, second metallic sheath, 21 contacts, first inner passage 13, second inner passage 23, be spirally connected when holding 25 being connected by first end 15 and second that is spirally connected, first internal thread 19 that requirement is formed on first plastic body 12 forms screw-thread fit with first outside thread 29 that is formed on second plastic body 22, thereby first metallic sheath 11, second metallic sheath 21 and first inner passage 13, second inner passage 23 are isolated, avoid contact medium and be corroded.
In view of the two hot melt composite steel-plastic pipe fittings of this screw thread formula can prevent that first metallic sheath 11, second metallic sheath 21 are corroded, therefore first metallic sheath 11, second metallic sheath 21 can select for use steel rather than copper to make, so that save manufacture cost.
Further, expose for fear of two hot melt connection parts, respectively overlap a lid 41,42 on pipe 31,32 this hot melt connection part lid is established, lid 41,42 is stuck in the corresponding annular groove 113,213.
As further improving and replenishing to technique scheme, the utility model also comprises following additional technical characteristics, though Figure 13 has comprised following all additional technical features, it is preferred embodiment of the present utility model, but the utility model is not limited to this situation, according to specifically acting on they is selected for use on the described technological scheme of epimere when implementing the utility model:
First internal thread 19 and second internal thread, 110 adjacency; First outside thread 29 and second outside thread, 210 adjacency.Thereby make internal thread, outside thread become as a whole respectively, during fabrication, reprocess out screw thread after can forming first pipe fitting, second pipe fitting.
The position that first plastic body 12 is positioned at first internal thread, 19 inboards is formed with axial support surface 114, is mounted with the corresponding seal ring 115 that forms second plastic body 22 of first outside thread 29 at these axial support surface 114 places.Thereby when linking together as shown in Figure 3, seal ring 115 is compressed between the end of the axial support surface 114 of first plastic body and second plastic body 22, reach better sealing effect, effectively first metallic sheath 11, second metallic sheath 21 and first inner passage 13, second inner passage 23 are isolated.As the concrete form of seal ring, can be zero shape circle, can also be the seal ring of other form.
The part that first metallic sheath 11, second metallic sheath 21 are entrenched in the plastic body is respectively arranged with reinforcement edge 111,211.Be used to guarantee the adhesive strength of first metallic sheath, second metallic sheath and plastic body.
Offer the exhaust port 112,212 that is communicated with first birdsmouth 18, second birdsmouth 28 on first plastic body 12, second plastic body 12 respectively, avoid when two hot melts connect, forming vapour lock (when hot melt connects, air in the joint socket can be discharged by exhaust port, avoid the formation of seal air cavity, reduce the socket joint resistance, avoid at welding position formation bubble, guarantee the welding effect), therefore, this exhaust port can be an axial bore, also can be radial hole.
Offer annular groove 113,213 on the inwall of first external annulus 17, second external annulus 27, be used to take in the molten knurl 51,52 that produces when two hot melts connect.
Neck bush 61,62 available copper are made, and make internal ring wall when being used for welding.
More than by an example the two hot melt composite steel-plastic pipe fittings of screw thread formula of the present utility model have been described, but as other form of the present utility model, pipe fitting can also be an elbow, threeway, structural types such as four-way, but for the ease of installing, first pipe fitting and second pipe fitting are good (closing as long as erecting bed is suitable to have a welding end all, do not get rid of two or more welding end, as first pipe fitting, second pipe fitting can have be spirally connected end and two welding ends during for threeway respectively, as first pipe fitting, second pipe fitting can have respectively during for four-way two be spirally connected end and two welding ends or have respectively one be spirally connected hold and three welding ends).
This pipe fitting also is applicable to the transition joint of valves such as PP-R pipe, PE pipe.
Claims (7)
1. the two hot melt composite steel-plastic pipe fittings of screw thread formula comprise first pipe fitting (1) and second pipe fitting (2), it is characterized in that:
Described first pipe fitting (1) is entrenched in first plastic body (12) by first metallic sheath (11) and goes up and to form wholely, and this first pipe fitting (1) has the first welding end (14) and first by first inner passage (13) connection end (15) that is spirally connected: the described first welding end (14) comprise by described first plastic body (12) form first internal ring wall (16), first external annulus (17) and be positioned at described first internal ring wall (16) and first external annulus (17) between first birdsmouth (18); Described first end (15) that is spirally connected is formed by described first plastic body (12), first metallic sheath (11), go up formation first internal thread (19) at described first plastic body (12), go up formation second internal thread (110) at described first metallic sheath (11), described first internal thread (19) is positioned at the inboard of second internal thread (110);
Described second pipe fitting (2) is entrenched in second plastic body (22) by second metallic sheath (21) and goes up and to form wholely, and this second pipe fitting (2) has the second welding end (24) and second by second inner passage (23) connection end (25) that is spirally connected: the described second welding end (24) comprise by described second plastic body (22) form second internal ring wall (26), second external annulus (27) and be positioned at described second internal ring wall (26) and second external annulus (27) between second birdsmouth (28); Described second end (25) that is spirally connected is formed by described second plastic body (22), second metallic sheath (21), go up formation first outside thread (29) at described second plastic body (22), go up formation second outside thread (210) at described second metallic sheath (21), described first outside thread (29) is positioned at the outside of second outside thread (210);
Described first inner passage (13) is formed by first plastic body (12); Described second inner passage (23) is formed by second plastic body (22).
2. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 1 is characterized in that described first internal thread (19) and second internal thread (110) adjacency; Described first outside thread (29) and second outside thread (210) adjacency.
3. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 1, it is characterized in that described first plastic body (12) is positioned at the inboard position of described first internal thread (19) and is formed with axial support surface (114), locate to be mounted with the corresponding seal ring (115) that forms second plastic body (22) of described first outside thread (29) in this axial support surface (114).
4. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 3 is characterized in that described seal ring (115) is zero a shape circle.
5. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 1 is characterized in that the part that described first metallic sheath (11), second metallic sheath (21) are entrenched in the plastic body is respectively arranged with reinforcement edge (111,211).
6. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 1 is characterized in that offering respectively on described first plastic body (12), second plastic body (22) exhaust port (112,212) that is communicated with first birdsmouth (18), second birdsmouth (28).
7. the two hot melt composite steel-plastic pipe fittings of screw thread formula according to claim 1 is characterized in that offering annular groove (113,213) on the inwall of described first external annulus (17), second external annulus (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201432599U CN201680074U (en) | 2010-03-29 | 2010-03-29 | Screw-locked double-hot-melting steel-plastic composite pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201432599U CN201680074U (en) | 2010-03-29 | 2010-03-29 | Screw-locked double-hot-melting steel-plastic composite pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680074U true CN201680074U (en) | 2010-12-22 |
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ID=43345118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201432599U Expired - Fee Related CN201680074U (en) | 2010-03-29 | 2010-03-29 | Screw-locked double-hot-melting steel-plastic composite pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479734A (en) * | 2016-01-21 | 2016-04-13 | 刘纯风 | Plastic tube welding protection opening |
-
2010
- 2010-03-29 CN CN2010201432599U patent/CN201680074U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479734A (en) * | 2016-01-21 | 2016-04-13 | 刘纯风 | Plastic tube welding protection opening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20170329 |