CN201462254U - Agnail type steel-plastic compound pressure pipe fitting - Google Patents
Agnail type steel-plastic compound pressure pipe fitting Download PDFInfo
- Publication number
- CN201462254U CN201462254U CN2009201046098U CN200920104609U CN201462254U CN 201462254 U CN201462254 U CN 201462254U CN 2009201046098 U CN2009201046098 U CN 2009201046098U CN 200920104609 U CN200920104609 U CN 200920104609U CN 201462254 U CN201462254 U CN 201462254U
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- pipe
- pipe clamp
- annular recess
- reverse
- pipe fitting
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Abstract
The utility model discloses an agnail type steel-plastic compound pressure pipe fitting which is composed of a pipe clamp and a connecting bolt, wherein the pipe clamp is provided with a front part and a back part and is connected with a flange, the middle part of the pipe clamp is a reverse U-shaped annular groove, the inner surface of the pipe clamp at two sides of the reverse U-shaped annular groove on the wall of the pipe clamp is provided with annular lugs, the distance between the annular lugs at two sides of the reverse U-shaped annular groove is slightly larger than the sum of distances from the annular grooves on the outer surfaces of the left pipe end part and the right pipe end part to respective pipe openings, the inner surface of the pipe clamp except for the reverse U-shaped annular groove and the annular lugs at two sides of the reverse U-shaped annular groove is provided with zigzag agnails inclined to the reverse U-shaped annular groove, and the height of the agnails is smaller than that of the annular lugs at two sides of the reverse U-shaped annular groove. The utility model is an agnail type steel-plastic compound pressure pipe fitting featuring slight temperature sensitivity and prevention of out-plugging.
Description
Technical field
The utility model relates to a kind of pipeline connecting pipe fitting, especially a kind of pipe unit for barbed steel-plastic compound pressure pipe.
Background technique
The steel-plastic composite pipe industry is a kind of new industry that has just grown up recent years, because characteristics such as its bearing capacity height, price are low, good corrosion resistance, linear expansion coeffcient are little, and had an optimistic view of by numerous manufacturing firms and user.But the pipe fitting of steel-plastic composite pressure pipe is supporting from existing market situation and field feedback, and allows of no optimist, and exists very big problem aspect pipe fitting supporting.
The special pipe fitting of the steel-plastic composite pressure pipe of Chu Xianing mainly contains following several in the market: (1) electrothermal smelting tube; (2) tube head injection moulding flange-type pipe fitting; (3) groove type pipe etc.These pipe fittings in use all exist various problems.Therefore, the application and the popularization of steel-plastic composite pressure pipe have been restricted.
The problem that electricity hot melten type pipe fitting exists is: (a) the electrothermal smelting tube main body of selling in the market all is made of plastics basically, because the intensity of plastics is very low, so cause the bearing capacity of this kind pipe fitting lower; (b) because this kind pipe fitting when connecting pipeline, is to mould the plastics of managing outer wall and make them be fused to one by heating pipe fitting inwall and steel, finally reach sealing effect.The fusing situation on the mating face of pipe fitting and pipe is sightless in carrying out the molten process of electric heating, can only control the fusing situation on mating face by the excessive mole of the technology on the pipe fitting, therefore be difficult to guarantee that each joint can both merge well, also just be difficult to the quality of connection of pilot line.(c) this kind pipe fitting is that perfect rigidity connects, therefore flexible very responsive to the pipeline that causes owing to variation of temperature, and when difference variation greatly the time, the destruction that is easy to cause the pipeline middle joint.
Tube head injection moulding flange-type pipe fitting, its catenation principle is at first annotating the flange of plastics by injection moulding in the termination that steel is moulded pipe, and the steel pipe that is connected then equally carries out the connection of pipeline.The problem of its existence is: (a) since the flange of pipe termination annotate in the pipe termination by injection molding way, if need pipe is cut off again when constructing at the scene, at the construction field (site) then can't be in the pipe termination injection moulding orchid of cut-out; (b) because this kind pipe fitting also is rigidly connected fully, thus relatively more responsive to variation of temperature, the destruction of under the bigger situation of the temperature difference, causing pipeline easily, the generation that causes the accident.
Groove type pipe, the problem of its existence is: because this kind pipe fitting is tube part projection fully embeds in the groove that pipe end rolls in advance, utilizes the very short one section intensity of moulding (12-15mm) outward of pipe end to carry out resistance to plucking and take off in the connection of steel-plastic composite pressure pipe pipeline.And the intensity of HDPE very low (HDPE tensile strength is 20-40MPa, only be steel about 1/10), so low, poor reliability of this form pipe fitting pressure-bearing can't be applied to the bright pipe laying line of steel-plastic composite pipe pipeline.
Therefore, designing the pipe unit for barbed steel-plastic compound pressure pipe of little, the anti-pull-off of a kind of temperature sensitivity, is the present technical issues that need to address.
Summary of the invention
Technical problem to be solved in the utility model provides the pipe unit for barbed steel-plastic compound pressure pipe of little, the anti-pull-off of a kind of temperature sensitivity.
The technical scheme in the invention for solving the technical problem is:
A kind of pipe unit for barbed steel-plastic compound pressure pipe, before the band flange connector, the pipe clamp and the connecting bolt of back symmetry are formed, the middle part of pipe clamp is for falling " U " type annular recess, fall at the pipe clamp wall that " " the pipe clamp internal surface of type annular recess both sides is provided with annular protrusion to U, fall " U " distance of the annular protrusion of the type annular recess left and right sides be slightly larger than butt joint left and right sides body end outer surface annular groove apart from separately apart from the mouth of pipe apart from sum, pipe clamp except that fall " U " the type annular recess and fall " U " internal surface the annular protrusion of the type annular recess left and right sides be provided with oblique fall " U " and the flexuose hangnail of type annular recess, the height of hangnail less than fall " U " height of the annular protrusion of the type annular recess left and right sides.
The technical scheme in the invention for solving the technical problem can also be:
Hangnail described in the utility model is distributed in down " U " the one or both sides of the annular protrusion of the type annular recess left and right sides.
Pipe clamp described in the utility model is cast with metallic material and is formed, and in the inner and outer surface plastic-blasting of pipe clamp or baking vanish, zinc-plated, chromium plating.
The beneficial effects of the utility model are:
(1) this kind pipe fitting so there is not the problem of tube reducing in this kind pipe fitting in the joint, is a kind of pipe fitting of isometrical connection owing to adopt the external sealed technology, has guaranteed the effective drift diameter of pipe;
(2) owing to a lot of hangnail that is partly with that contacts with pipe on the pipe clamp of this kind pipe fitting, so increased the anti-pull-out force of pipe fitting; Owing to after the projection installation at pipe clamp middle part, can be embedded in the groove that rolls in advance on the pipe, also increased the anti-pull-out force of pipe fitting again.Make joint more safe and reliable by above-mentioned two kinds of measures.
(3) referring to Fig. 1, what this kind pipe fitting adopted on sealing means is side external sealed mode, so still can guarantee the sealing reliability of joint when stretching on a small quantity appears in pipeline for a certain reason;
(4) because each parts on this kind pipe fitting all are removable, so this kind pipe fitting can recycling.
(5) pipeline that connects owing to this kind pipe fitting, tubing and tubing, pipe fitting all adopt Placement end to end in tubing, so guaranteed the convenience of pipeline change and maintenance.
Description of drawings
Fig. 1 is the utility model first embodiment's a structural representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is second an embodiment's of the present utility model structural representation.
Using method of the present utility model:
(1) at first utilize channelling machine to roll out the groove of required size in the end of the pipe 1 of preparing to connect;
(2) connection of pipeline
(a) connection of equal coupling pipe fitting: exterior seal ring 3 is inserted in the end of wanting connecting pipe, with two pipe end alignment. Then the up and down two halves pipe clamp of two ends band hangnail is loaded onto, incited somebody to action up and down two pipe clamps compressions with bolt, namely finished the connection of this kind pipe fitting.
(b) connection of other kind pipe fitting: referring to Fig. 2, with the end that exterior seal ring is inserted in the connecting tube interface of wanting, tube end is alignd with the pipe fitting end that packages cushion rubber. Then the barbed up and down two halves pipe clamp of an end band is loaded onto, incited somebody to action up and down two pipe clamps compressions with bolt, namely finished the connection of this kind pipe fitting.
Embodiment
As shown in the figure, a kind of pipe unit for barbed steel-plastic compound pressure pipe, before the band flange connector, the pipe clamp 2 of back symmetry and connecting bolt 4 are formed, the middle part of pipe clamp 2 is for falling " U " type annular recess, fall at the pipe clamp wall that " " the pipe clamp internal surface of type annular recess both sides is provided with annular protrusion to U, fall " U " distance of the annular protrusion of the type annular recess left and right sides be slightly larger than butt joint left and right sides body end outer surface annular groove apart from separately apart from the mouth of pipe apart from sum, " " the type annular recess is with " " internal surface the annular protrusion of the type annular recess left and right sides is provided with oblique " U " the flexuose hangnail of type annular recess to U to U except that falling at pipe clamp 2, the height of hangnail less than fall " U " and the height of the annular protrusion of the type annular recess left and right sides. described hangnail be distributed in down " U " and the one or both sides of the annular protrusion of the type annular recess left and right sides. described pipe clamp 2 is cast with metallic material and is formed, and at the inner and outer surface plastic-blasting or the baking vanish of pipe clamp, zinc-plated, chromium plating.
Claims (3)
1. pipe unit for barbed steel-plastic compound pressure pipe, before the band flange connector, the pipe clamp (2) and the connecting bolt (4) of back symmetry are formed, it is characterized in that: the middle part of pipe clamp (2) is for falling " U " type annular recess, fall at the pipe clamp wall that " " the pipe clamp internal surface of type annular recess both sides is provided with annular protrusion to U, fall " U " distance of the annular protrusion of the type annular recess left and right sides be slightly larger than butt joint left and right sides body end outer surface annular groove apart from separately apart from the mouth of pipe apart from sum, at pipe clamp (2) except that falling " U " type annular recess and fall that " " internal surface the annular protrusion of the type annular recess left and right sides is provided with and obliquely falls that " " the flexuose hangnail of type annular recess, the height of hangnail is less than falling " U " the height of the annular protrusion of the type annular recess left and right sides for U U.
2. a kind of pipe unit for barbed steel-plastic compound pressure pipe according to claim 1 is characterized in that: described hangnail is distributed in down " U " the one or both sides of the annular protrusion of the type annular recess left and right sides.
3. a kind of pipe unit for barbed steel-plastic compound pressure pipe according to claim 1 and 2 is characterized in that: described pipe clamp (2) is cast with metallic material and is formed, and in the inner and outer surface plastic-blasting of pipe clamp or baking vanish, zinc-plated, chromium plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201046098U CN201462254U (en) | 2009-09-08 | 2009-09-08 | Agnail type steel-plastic compound pressure pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201046098U CN201462254U (en) | 2009-09-08 | 2009-09-08 | Agnail type steel-plastic compound pressure pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201462254U true CN201462254U (en) | 2010-05-12 |
Family
ID=42389607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201046098U Expired - Lifetime CN201462254U (en) | 2009-09-08 | 2009-09-08 | Agnail type steel-plastic compound pressure pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201462254U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062532A (en) * | 2011-10-23 | 2013-04-24 | 林锐志 | Polyethylene plastic steel winding drain pipe clamping hoop |
| WO2013155703A1 (en) * | 2012-04-20 | 2013-10-24 | Ge Wenyu | Articulated joint type middle-high pressure pipeline connecting piece |
| CN106439302A (en) * | 2016-10-18 | 2017-02-22 | 刘之华 | Double-seal type pipeline connecting structure |
| CN107042599A (en) * | 2017-04-14 | 2017-08-15 | 河北建投宝塑管业有限公司 | PVC O pipe sockets piecing devices and its moulding process |
| CN108131511A (en) * | 2017-12-25 | 2018-06-08 | 苏州鑫飞鹰工程机械科技有限公司 | Pipeline adapter |
-
2009
- 2009-09-08 CN CN2009201046098U patent/CN201462254U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062532A (en) * | 2011-10-23 | 2013-04-24 | 林锐志 | Polyethylene plastic steel winding drain pipe clamping hoop |
| WO2013155703A1 (en) * | 2012-04-20 | 2013-10-24 | Ge Wenyu | Articulated joint type middle-high pressure pipeline connecting piece |
| CN106439302A (en) * | 2016-10-18 | 2017-02-22 | 刘之华 | Double-seal type pipeline connecting structure |
| CN107042599A (en) * | 2017-04-14 | 2017-08-15 | 河北建投宝塑管业有限公司 | PVC O pipe sockets piecing devices and its moulding process |
| CN108131511A (en) * | 2017-12-25 | 2018-06-08 | 苏州鑫飞鹰工程机械科技有限公司 | Pipeline adapter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |