CN207229999U - Splice combinations for plastic water supply pipe - Google Patents

Abstract

The utility model discloses a kind of splice combinations for plastic water supply pipe, easy to assembly, can reduce metal inner peripheral surface directly contacted with water and the influence to water quality and between metal and plastics combine fastening, sealing and anti-leakage water effect it is good.Specifically include the adapter of outer tooth and interior tooth adapter, interior tooth adapter is by adapter body and is actively socketed on the interior tooth head of adapter body one end and forms, in interior tooth head with the loose joint end top surface with adapter body offset on connect ring；Outer tooth adapter is made of the plastic casing that insert bodies, outer tooth head and injection are overmolded onto in insert bodies, plastic casing has water receiving chamber and the extension ring portion of connection inserting part main body internal perisporium and outer tooth head internal perisporium is upwardly extended by the inner wall of water receiving chamber, the first water sealing structure is set between extension ring portion and insert bodies internal perisporium, the second water sealing structure is set between extension ring portion and outer tooth head internal perisporium, and the end of extension ring portion is equipped with stair ring and is adapted to the sealing ring being set in stair ring, sealing ring, which is closely against, in the assembled state connects ring.

Description

Splice combinations for plastic water supply pipe

Technical field

Pipe fitting technical field is the utility model is related to, more particularly to a kind of splice combinations for plastic water supply pipe.

Background technology

Pipeline is a kind of common article.The connection of pipeline is realized generally by pipe joint, in Chinese patent Number be 201120485894X, authorized announcement date be on July 11st, 2012, entitled " one kind insulation feedwater piping and guarantor A kind of pipeline is disclosed in the patent document of warm water supply piping system ".The material for making pipe joint has very much, wherein plastics material The pipe joint of matter due to have the advantages that it is light-weight, will not be low etc. by corrosion, cost, application is very wide weary.

The pipe joint of plastic material has threaded and not threaded two kinds of structure type, the pipe joint of threaded inserts Basic structure form be to rabbet inserts, inserts in the interface end of pipe joint and use metal material（Usually copper）Make and Into, connection Design of Screw Thread on the inner peripheral surface or outer circumferential surface of inserts, to avoid connection when produces tear phenomenon.Chinese special Profit number is 2007100696821, publication date is on November 28th, 2007, the patent document i.e. public affairs of entitled " water pipe head " A kind of pipe joint equipped with threaded insert is opened.

But existing pipe joint has the following disadvantages：Inserts inner peripheral surface bare area is big during use, easily produces rust Phenomenon is lost, in order to avoid producing corrosion phenomena, inserts, which can only use, does not allow the metal material such as copper of easy-to-rust to be made so that Make the kind generic limitation of the material of inserts.Further, since the coefficient of expansion of metal and plastics is inconsistent, metal when expanding with heat and contract with cold Between plastics return produce layering break-off, cause inserts come off or the junction of plastics and metal produce leakage phenomenon, especially It is to be also easy to produce drainage in the inside and outside tooth place of being spirally connected end.

Utility model content

To overcome technological deficiency existing in the prior art, the utility model provides a kind of connector group for plastic water supply pipe Close, it is easy to assembly, while reduce metal inner peripheral surface directly to be contacted with water to the influence of water quality, and combined between metal and plastics Fastening, sealing and anti-leakage water effect are good.

The utility model use technical solution be：

For the splice combinations of plastic water supply pipe, including the adapter of outer tooth and interior tooth adapter, the interior tooth adapter is by taking over this Body and the interior tooth head composition for being movably connected in adapter body one end, the interior loose joint end top surface having with adapter body of the interior tooth head Ring is connect on offseting；The outer tooth is taken over by insert bodies, is integrally attached to what is be adapted at the top of insert bodies and with interior tooth head Outer tooth head and injection are overmolded onto the plastic casing composition in insert bodies, and the plastic casing has water receiving chamber and by connecing The inner wall of water cavity upwardly extends the extension ring portion of connection inserting part main body internal perisporium and outer tooth head internal perisporium, the extension ring portion with it is embedding The first water sealing structure is equipped between part main body internal perisporium, the second sealing knot is equipped between the extension ring portion and outer tooth head internal perisporium Structure, and the end of the extension ring portion is equipped with stair ring and adaptation is set in sealing ring in stair ring, in the assembled state institute State sealing ring and be closely against on described and connect ring.

Preferably, the interior tooth adapter is bypass structure, 90 ° of elbows, 45 ° of elbows or three-way connection, and the interior tooth is taken over Other ends be set to hot-melt adhesive paste end.

Preferably, the outer tooth adapter is straight coupling, 90 ° of elbows, 45 ° of elbows or three-way connection, and the outer tooth is taken over Other ends be set to hot-melt adhesive paste end.

Preferably, the periphery wall of the insert bodies is arranged at intervals with least two sealing grooves, the inserts master up and down Cap bag is connected with the top of body, injection space is left between the cap bag and the periphery wall of insert bodies.

Preferably, the cap bag inner peripheral surface is equipped with some ending tendon transfers.

Preferably, first water sealing structure by the first sealing annular groove on insert bodies internal perisporium and is correspondingly arranged at Extend ring portion and the first sealing bulge loop close-fitting with the first sealing annular groove forms, second water sealing structure is by arranged on outer tooth Head internal perisporium on the second sealing annular groove and be correspondingly arranged at extend ring portion and with close-fitting second sealing of the second sealing annular groove Bulge loop forms.

Preferably, the T-shaped structure of the radial section of the radial section of the first sealing annular groove and the second sealing annular groove Or dove-tail form structure.

The beneficial effects of the utility model：Since interior tooth head is movably connected on adapter body, so that interior tooth is taken over With the adapter of outer tooth install combine when it is more easy and convenient, realize pipeline being disposed to extend in all directions, for example directly or turn Connect.Due to outer tooth adapter with cladding insert bodies internal perisporium and outer tooth head internal perisporium extension ring portion, extension ring portion with it is embedding The first water sealing structure is equipped between part main body, extends and the second water sealing structure is equipped between ring portion and outer tooth head, and extends ring portion end End is additionally provided with for closely being offseted the sealing ring of cooperation after interior tooth adapter is installed in place with the adapter of outer tooth with above connecing ring, and such one It is the sealing and anti-leakage water effect for realizing the place that is spirally connected in interior tooth adapter and the adapter of outer tooth, second, avoiding outer tooth head and insert bodies direct Contacted with water, reduce influence of the metal parts to water quality, third, the cold and hot change of flowing water in pipe can be avoided to cause to reduce extended loop Bonding strength between portion and outer tooth head and insert bodies, while strengthen close between extension ring portion and outer tooth head and insert bodies Seal waterproof effect.

Brief description of the drawings

Fig. 1 is the utility model interior tooth adapter loose joint end structure schematic diagram.

Fig. 2 takes over the end structure schematic diagram that is spirally connected for the outer tooth of the utility model.

Fig. 3 is the utility model splice combinations connection status structure diagram.

Description of reference numerals：

10th, outer tooth adapter；11st, insert bodies；12nd, outer tooth head；13rd, plastic casing；14th, cap bag；15th, ring portion is extended； 111st, sealing groove；101st, the first water sealing structure；102nd, the second water sealing structure；103rd, sealing ring；20th, interior tooth is taken over；21st, take over Body；22nd, interior tooth head；221st, ring is connect on；222nd, ring is connect under；223rd, sealing structure.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings：

As shown in Figs. 1-3, the present embodiment provides a kind of splice combinations for plastic water supply pipe, including outer tooth adapter 10 and Interior tooth adapter 20.

In the present embodiment, the interior tooth adapter 20 is made of adapter body 21 and interior tooth first 22, the adapter body 21 Structure can be bypass structure, 90 ° of elbows, 45 ° of elbows or three-way connection, each end of adapter body 21 can be isometrical, also may be used For reducing, the interior tooth first 22 is movably connected in one end of adapter body 21, and other ends of the adapter body 21 are set to Hot-melt adhesive paste end.The interior tooth first 22 has the centre bore of up/down perforation and is tapped with internal thread, internal thread on the hole wall of centre bore top On the centre bore hole wall of lower section respectively radial direction convex be provided with connect ring 221 and under connect ring 222, it is described on connect ring 221 with it is minimum The internal thread at end connects and is fastened in the loose joint end top surface of adapter body 21, and the work that ring 222 is fastened in adapter body 21 is connect under described End outside is connect, is equipped with sealing structure 223 between the lateral wall at 21 loose joint end of the interior tooth first 22 and adapter body, as shown in Figure 1.

In the present embodiment, the outer tooth adapter 10 by insert bodies 11, be integrally attached to the top of insert bodies 11 and with The plastic casing 13 that the outer tooth first 12 and injection that interior tooth first 22 is adapted are overmolded onto in insert bodies 11 forms, the modeling The structure of material shell body 13 can be bypass structure, 90 ° of elbows, 45 ° of elbows or three-way connection, and each end of plastic casing 13 can be etc. Footpath, or reducing, the one end to connect with insert bodies 11 is set to the end that is spirally connected, and other ends of the plastic casing 13 are set to Hot-melt adhesive paste end.

In the present embodiment, the periphery wall of the insert bodies 11 is arranged at intervals with least two sealing grooves 111 up and down, On the one hand connectivity robustness between the insert bodies 11 and plastic casing 13 is strengthened by sealing groove 111, on the other hand It can avoid, from the clearance leakage between 11 periphery wall of plastic casing 13 and insert bodies, forming multiple waterproof structure.The inserts The top of main body 11 is connected with cap bag 14, and injection space is left between the cap bag 14 and the periphery wall of insert bodies 11, Further 14 inner peripheral surface of cap bag is equipped with some ending tendon transfers, using ending tendon transfer can strengthen insert bodies 11, cap bag 14 with Circumferentially fixed effect between plastic casing 13, avoids relatively rotating when mounted.

In the present embodiment, the plastic casing 13 has water receiving chamber and upwardly extends connection inserting part by the inner wall of water receiving chamber The extension ring portion 15 of 11 internal perisporium of main body and first 12 internal perisporium of outer tooth, the end of the extension ring portion 15 are equipped with stair ring and adaptation The sealing ring 103 being set in stair ring, the sealing ring 103, which is closely against on described, in the assembled state connects ring 221, so makes Interior tooth adapter 20 and outer tooth adapter 10 be spirally connected after can play the role of sealing and anti-leakage water at the place of being spirally connected, avoid in pipe water from the two Be spirally connected place's leakage outflow.

In the present embodiment, the first water sealing structure 101 is equipped between extension 11 internal perisporium of ring portion 15 and insert bodies, First water sealing structure 101 is by the first sealing annular groove on 11 internal perisporium of insert bodies and is correspondingly arranged at extension ring portion 15 And the first sealing bulge loop composition close-fitting with the first sealing annular groove.Between the extension ring portion 15 and first 12 internal perisporium of outer tooth Equipped with the second water sealing structure 102, second water sealing structure 102 by the second sealing annular groove on first 12 internal perisporium of outer tooth and It is correspondingly arranged at extension ring portion 15 and the second sealing bulge loop close-fitting with the second sealing annular groove forms.The first sealing annular groove Radial section and the second sealing annular groove the T-shaped structure of radial section or dove-tail form structure.

The basic principle and main feature and advantages of the present invention of the invention has been shown and described above, the industry Technical staff is not being departed from it should be appreciated that the description of the embodiments and the specification only illustrate the principle of the present utility model On the premise of the invention spirit and scope, the utility model also has various changes and modifications, these changes and improvements are all Fall into claimed the scope of the utility model, the utility model requires protection scope is by appended claims and its waits Effect thing defines.

Claims (7)

1. the splice combinations for plastic water supply pipe, it is characterised in that the splice combinations include the adapter of outer tooth and interior tooth adapter, institute Interior tooth adapter is stated by adapter body and is movably connected in the interior tooth head of adapter body one end and forms, with connecing in the interior tooth head The loose joint end top surface of tube body offset on connect ring；The outer tooth is taken over by insert bodies, is integrally attached at the top of insert bodies And the outer tooth head being adapted with interior tooth head and injection are overmolded onto the plastic casing composition in insert bodies, the plastic housing Body has water receiving chamber and the extended loop of connection inserting part main body internal perisporium and outer tooth head internal perisporium is upwardly extended by the inner wall of water receiving chamber Portion, is equipped with the first water sealing structure, the extension ring portion and outer tooth head inner circumferential between the extension ring portion and insert bodies internal perisporium Be equipped with the second water sealing structure between wall, and the end of the extension ring portion be equipped with stair ring and adaptation be set in it is close in stair ring Seal, the sealing ring, which is closely against on described, in the assembled state connects ring.

2. the splice combinations according to claim 1 for plastic water supply pipe, it is characterised in that the interior tooth adapter is straight Logical structure, 90 ° of elbows, 45 ° of elbows or three-way connection, other ends of the interior tooth adapter are set to hot-melt adhesive paste end.

3. the splice combinations according to claim 1 for plastic water supply pipe, it is characterised in that the outer tooth adapter is straight Pass joint, 90 ° of elbows, 45 ° of elbows or three-way connection, other ends of the outer tooth adapter are set to hot-melt adhesive paste end.

4. the splice combinations according to claim 1 for plastic water supply pipe, it is characterised in that outside the insert bodies Perisporium is arranged at intervals with least two sealing grooves up and down, and cap bag, the cap bag are connected with the top of the insert bodies Injection space is left between the periphery wall of insert bodies.

5. the splice combinations according to claim 4 for plastic water supply pipe, it is characterised in that on the cap bag inner peripheral surface Equipped with some ending tendon transfers.

6. the splice combinations according to any one of claims 1 to 5 for plastic water supply pipe, it is characterised in that described One water sealing structure by the first sealing annular groove on insert bodies internal perisporium and be correspondingly arranged at extension ring portion and with the first sealing The close-fitting first sealing bulge loop composition of annular groove, second water sealing structure is by the second sealing on outer tooth head internal perisporium Annular groove and be correspondingly arranged at extension ring portion and the second sealing bulge loop close-fitting with the second sealing annular groove form.

7. the splice combinations according to claim 6 for plastic water supply pipe, it is characterised in that the first sealing annular groove Radial section and the second sealing annular groove the T-shaped structure of radial section or dove-tail form structure.