CN106382431A - Plastic pipe joint of water supply pipeline - Google Patents
Plastic pipe joint of water supply pipeline Download PDFInfo
- Publication number
- CN106382431A CN106382431A CN201611148029.XA CN201611148029A CN106382431A CN 106382431 A CN106382431 A CN 106382431A CN 201611148029 A CN201611148029 A CN 201611148029A CN 106382431 A CN106382431 A CN 106382431A
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- Prior art keywords
- main body
- resistance
- connecting portion
- hot
- plucking
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
Abstract
The invention provides a plastic pipe joint of a water supply pipeline, belongs to the technical field of water pipe components, and solves the problem that an existing pipe joint is liable to burst under the working condition of hot and cold water circulation. The plastic pipe joint of the water supply pipeline comprises a hot-melting connection main body and a thread connection main body, wherein the hot-melting connection main body is provided with a connection part; the thread connection main body is connected to the inner circumferential surface and the outer circumferential surface of the connection part in a hot-melting manner; an anti-torsion lug is arranged on the outer wall of the connection part; the inner circumferential surface of the connection part is configured to be a conical surface; an anti-pulling bar is arranged on the inner circumferential surface of the connection part; a buckling groove is formed in the outer circumferential surface of the hot-melting connection main body; the port of the thread connection main body is provided with an anti-pulling flange; the anti-pulling flange is buckled in the buckling groove; and the anti-pulling flange is located at the inner end of the anti-pulling bar. The plastic pipe joint of the water supply pipeline has high anti-pulling and anti-torsion performance under the working condition of high-temperature and low-temperature water circulation, and a long service life.
Description
Technical field
The invention belongs to water tube component technical field, it is related to a kind of plastic water supply pipe road pipe joint.
Background technology
Pipe joint is the connection accessory between pipeline and pipeline, is the connector that can dismount between accessory and pipeline,
Indispensable key player is act as, it is one of main composition part of pipeline, and pipe joint species is more, application in pipe fitting
Extensively, wherein apply in the connection of feed pipe and more concentrate, feed pipe needs to deliver water into the height of tens meters of even more highs
Degree is therefore higher to the pressure-bearing of pipe joint, sealing property requirement.
As utility application (application number：201520811254.1) disclose in a kind of plastic water supply pipe road screw thread
Tooth pipe joint, including hot-melt adhesive paste main body and threaded main body, hot-melt adhesive paste main body has connecting portion, threaded main body
One end has spiro union portion, and this spiro union portion is internally positioned, and the madial wall of spiro union portion has internal thread, threaded main body another
End is set on connecting portion, and connecting portion is in inserting groove, and threaded main body is made using engineering plastics, hot-melt adhesive paste master
Body is made using hot-melt plastic, and the inner peripheral surface due to threaded main body and connecting portion coordinates for light face, lacks between the two
Connection member is attached the reinforcement of intensity, and this pipe joint can be suitable under cold water operating mode, but when this pipe joint is applied
When under hot and cold water state of cyclic operation, gathering change the hardness of hot-melt adhesive paste main body being led to die down of water temperature, ultimately result in pipe joint
Explosion.
Content of the invention
The purpose of the present invention is that there are the problems referred to above for existing technology it is proposed that a kind of plastic water supply pipe deferent connects
Head, this plastic water supply pipe road pipe joint has higher resistance to plucking anti-torsion performance, service life under high-low-temperature state of cyclic operation
Long.
The purpose of the present invention can be realized by following technical proposal：A kind of plastic water supply pipe road pipe joint, including employing
Hot-melt adhesive paste main body and the threaded main body made using engineering plastics that hot-melt plastic is made, described threaded main body
Hardness is more than the hardness of hot-melt adhesive paste main body, and the Single port of described hot-melt adhesive paste main body has tubular connecting portion, described spiral shell
Line is connected main body and is connected on the inner peripheral surface and outer peripheral face of connecting portion by hot melting way, and described connecting portion outer wall has can
Prevent anti-torsion projection that threaded main body circumferentially rotates relative to hot-melt adhesive paste main body it is characterised in that described connecting portion interior
Side face is arranged to the conical surface makes the thickness of connecting portion by the inside progressive additive of external port, also has protrusion on the inner peripheral surface of connecting portion
Inner peripheral surface the resistance to plucking bar with connecting portion integral molding, the length direction of described resistance to plucking bar is circumferentially arranged, and resistance to plucking bar
Cross section is arched, triangle or rectangle, is formed and match welding with resistance to plucking bar after described threaded main body hot-melt adhesive paste
Hot melt concave surface, the outer peripheral face of described hot-melt adhesive paste main body opens up snap groove, and the port of described threaded main body has resistance to plucking
Convex edge, described resistance to plucking convex edge snaps onto in snap groove, and described resistance to plucking convex edge is located at the inner of resistance to plucking bar.
Pipe joint can be screw thread directly, one of screw thread threeway or threaded elbow, wherein threaded main body is adopted
Made with engineering plastics, have compared with high-mechanical property and high- and low-temperature resistance performance, dimensional stability is preferable, in threaded main body
On there is hickey, be threaded connection and feed pipe between, hot-melt adhesive paste main body can adopt PP-R or PE material system
Become, creep-resistant property is good at relatively high temperatures, pass through welding and feed pipe between and be connected；Threaded main body welding is in connecting portion
Inner peripheral surface and outer peripheral face on, between therefore threaded main body and connecting portion, there is larger connection area, and threaded
Bulk hardness is larger, connecting portion parcel can be constrained in inside, it is to avoid connecting portion is because high-low-temperature circulation and high hydraulic pressure
Under operating mode, deformation occurs and lead to seepage or explosion, diametrically pipe joint is strengthened, anti-torsion projection is prevented from
Threaded main body, relative to hot-melt adhesive paste body rotation, improves the stable connection between threaded main body and hot-melt adhesive paste main body
Property and anti-torsion performance, in the circumferential pipe joint is strengthened, resistance to plucking bar protrudes connecting portion inner peripheral surface, and threadeds master
The hot melt concave surface phase welding of body, its cross section is arched or triangle or rectangle all can improve inside connecting portion and screw thread
Connect the axial breakout capacity between main body, wherein arch refer to by string and its to the figure that forms of arc, and hot melt is even
Connect the snap groove on main body outer peripheral face and be located at the inner and close connecting portion of connecting portion, the snapping convex edge welding button of threaded main body
In snap groove, it is possible to increase with the axial breakout capacity threadeded between main body outside connecting portion, that is, in the axial direction to pipe
Joint is strengthened, and wherein snapping convex edge is located at the inner of resistance to plucking bar, and that is, resistance to plucking bar carries out breakout capacity to the outer end of connecting portion
Reinforcement, snapping convex edge carries out the reinforcement of breakout capacity to the inner of connecting portion, in view of the setting of snap groove, therefore by connecting portion
Inner thickness increase, that is, the inner peripheral surface of connecting portion is arranged to the conical surface makes the thickness of connecting portion by the inside progressive additive of external port,
Connecting portion is made still to have enough intensity after opening up snap groove, the connecting portion inner peripheral surface of conical surface shape is also connected with screw thread simultaneously
Connect and there is between main body bigger connection area, finally make this pipe joint have higher resisting under high-low-temperature state of cyclic operation
Pull out anti-torsion performance, high life.
In above-mentioned plastic water supply pipe road pipe joint, the other end of described hot-melt adhesive paste main body is adapter portion, described heat
Molten connect the fillet surface between main body end face and connecting portion inner peripheral surface with inclination, the straight line of this fillet surface to snapping groove bottom away from
From the thickness more than or equal to adapter portion.It is arranged to chamfer between connecting portion inner peripheral surface and hot-melt adhesive paste main body end face,
It can be avoided that stress concentration, the position that the position that snap groove opens up is combined with hot-melt adhesive paste main body for connecting portion simultaneously, this pipe connects
Head proposes to be strict with to the thickness at this, and its thickness needs the thickness more than or equal to adapter portion, it is to avoid this is in Gao Shui
Explosion occurs under pressure condition.
In above-mentioned plastic water supply pipe road pipe joint, ringwise, and resistance to plucking bar has three to described resistance to plucking bar, and this three resist
Pull out bar axially arranged along connecting portion.The size of pipe joint makes the height of connecting portion be restricted, and threaded main body is not only
Want welding on resistance to plucking bar it is also desirable on the connecting portion inner peripheral surface being fused between adjacent resistance to plucking bar, therefore appropriate number of anti-
Pull out width and the gap that bar ensure that resistance to plucking bar, and quantity be three when between threaded main body and hot-melt adhesive paste main body
Extraction-resistant behavior higher.
In above-mentioned plastic water supply pipe road pipe joint, the width of described resistance to plucking bar is 1mm～3mm, three described resistance to pluckings
Bar equidistantly distributed, and the distance between adjacent two resistance to plucking bars are 0.5mm～1mm.The width of resistance to plucking bar is excessive, then adjacent resistance to plucking
The distance between bar is too small, and the distance between equally adjacent resistance to plucking bar is excessive, then the width of resistance to plucking bar too small it is therefore desirable to will resist
Pull out the distance between the width of bar and adjacent resistance to plucking bar and be set in above-mentioned zone of reasonableness so that threaded main body and heat
Between molten connection main body, there is higher extraction-resistant behavior.
In above-mentioned plastic water supply pipe road pipe joint, the distance between adjacent two resistance to plucking bars from connecting portion external port to
Inside taper into.Because the inner hole wall of threaded main body is straight-tube shape, therefore the inner peripheral surface in connecting portion is in conical surface rear thread
Connect the inner thickness of body interior to diminish, for this, inner resistance to plucking bar setting is relatively close, to improve to threaded
The inner bonding strength of body interior, improves overall extraction-resistant behavior.
In above-mentioned plastic water supply pipe road pipe joint, in the shape of a spiral, and the number of turns of resistance to plucking bar spiral is extremely for described resistance to plucking bar
Rare two circles.Spiral helicine resistance to plucking bar equally can improve the extraction-resistant behavior between threaded main body and hot-melt adhesive paste main body.
In above-mentioned plastic water supply pipe road pipe joint, the pitch of described resistance to plucking bar is inside gradually by the external port of connecting portion
Diminish.In the same manner, the inner setting of resistance to plucking bar is relatively close, strong to the inner connection of threaded body interior to improve
Degree, improves overall extraction-resistant behavior.
In above-mentioned plastic water supply pipe road pipe joint, on the outer peripheral face of described connecting portion, circumference has adding of some annulars
Strong convex edge, along the axial direction arrangement of connecting portion, above-mentioned snap groove is located at the inner strengthening convex edge, and strengthening groove for this some reinforcement convex edge
Cell wall seamlessly transit with strengthening convex edge end face.Strengthen convex edge to be used for increasing connecting portion outer peripheral face and threadeding between main body
Connection area and bonding strength, including preventing threaded main body opposing connections from circumferentially rotating, improve anti-torsion performance, also wrap
Include and prevent threaded main body opposing connections axial movement, improve extraction-resistant behavior, wherein strengthening groove and inner reinforcement convex edge
End face seamlessly transits, it is to avoid connecting portion stress concentration under the effect of snapping convex edge.
In above-mentioned plastic water supply pipe road pipe joint, if circumference has on the reinforcement convex edge outer peripheral face adjacent with snap groove
Dry breach, forms above-mentioned anti-torsion projection between adjacent two breach, described threaded main body is fused in breach.Anti- torsion projection
Circumference is uniform, can increase considerably the anti-torsion performance between threaded main body and hot-melt adhesive paste main body.
In above-mentioned plastic water supply pipe road pipe joint, on the end face of described hot-melt adhesive paste main body, circumference offers annular
Strengthening groove, described threaded main body welding is in strengthening groove.Strengthening groove be used for increasing the inner of threaded body interior with
Connection area between hot-melt adhesive paste main body and radial direction anti-pressure ability, in sum, resistance to plucking bar is located at the inner peripheral surface of connecting portion
On, strengthen convex edge and be located on the outer peripheral face of connecting portion, and anti-torsion projection and snap groove are located at the inner of connecting portion, strengthening groove is located at
On the end face of hot-melt adhesive paste main body, thus carrying out with the extraction-resistant behavior threadeded between main body and anti-torsion performance to connecting portion
Comprehensive raising.
Compared with prior art, this plastic water supply pipe road pipe joint has advantages below：
1st, because resistance to plucking bar protrudes connecting portion inner peripheral surface, and threaded the hot melt concave surface phase welding of main body, it is possible to increase
Hot-melt adhesive paste main body and the axial extraction-resistant behavior threadeded between main body.
2nd, the position being combined with hot-melt adhesive paste main body for connecting portion due to the position that snap groove opens up, this pipe joint is at this
Thickness propose to be strict with the thickness so that thickness at this is more than or equal to adapter portion, it is to avoid this is in high hydraulic pressure shape
Explosion occurs under state.
3rd, because resistance to plucking bar is located on the inner peripheral surface of connecting portion, strengthening groove is located on the outer end end face of connecting portion, strengthens convex
Edge is on the outer peripheral face of connecting portion, and anti-torsion projection and snap groove are located at the inner of connecting portion, thus to connecting portion and screw thread
Connect the extraction-resistant behavior between main body and anti-torsion performance carries out comprehensive raising.
Brief description
Fig. 1 is the lateral partial structurtes sectional view of plastic water supply pipe road pipe joint.
Fig. 2 is the lateral partial structurtes sectional view of hot-melt adhesive paste main body.
Fig. 3 is the lateral partial structurtes sectional view of threaded main body.
Fig. 4 is the lateral partial structurtes sectional view of hot-melt adhesive paste main body in embodiment two.
Fig. 5 is the lateral partial structurtes sectional view of hot-melt adhesive paste main body in embodiment three.
Fig. 6 is the lateral partial structurtes sectional view of hot-melt adhesive paste main body in example IV.
Fig. 7 is the lateral partial structurtes sectional view of hot-melt adhesive paste main body in embodiment five.
Fig. 8 is the lateral partial structurtes sectional view of plastic water supply pipe road pipe joint in embodiment six.
Fig. 9 is the lateral partial structurtes sectional view of plastic water supply pipe road pipe joint in embodiment seven.
Figure 10 is the lateral partial structurtes sectional view of plastic water supply pipe road pipe joint in embodiment eight.
In figure, 1, hot-melt adhesive paste main body；11st, connecting portion；111st, resistance to plucking bar；112nd, strengthen convex edge；113rd, anti-torsion projection；
114th, breach；12nd, snap groove；13rd, fillet surface；14th, adapter portion；15th, strengthening groove；2nd, threaded main body；21st, hot melt concave surface；
22nd, resistance to plucking convex edge；23rd, spiro union portion.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one：
As shown in figure 1, a kind of plastic water supply pipe road pipe joint, this pipe joint is threaded elbow, including hot-melt adhesive paste main body 1
With threaded main body 2, threaded main body 2 is made using engineering plastics, has compared with high-mechanical property and high- and low-temperature resistance
Can, dimensional stability preferably, has internal thread on threaded main body 2 internal perisporium, for threadeding with feed pipe, that is, should
Pipe joint is to connect elbow in screw thread, and hot-melt adhesive paste main body 1 is made using hot-melt plastic, such as PP-R or PE, in higher temperature
Lower creep-resistant property is good, and its one end has adapter portion 14, and for being connected with feed pipe welding, threaded main body 2 hardness is more than
The hardness of hot-melt adhesive paste main body 1, the another port of hot-melt adhesive paste main body 1 has tubular connecting portion 11, threaded main body 2
It is connected on the inner peripheral surface and outer peripheral face of connecting portion 11 by hot melting way, connecting portion 11 parcel is constrained in inside.Connecting portion
11 inner peripheral surface is the conical surface so that the thickness of connecting portion 11 is by the inside progressive additive of external port, on the inner peripheral surface of connecting portion 11
Also there are three resistance to plucking bars 111, this three resistance to plucking bars 111 protrude the inner peripheral surface of connecting portion 11, and become with connecting portion 11 integral type
Type, the length direction of resistance to plucking bar 111 is circumferentially arranged, and the cross section of resistance to plucking bar 111 is arched, threaded main body 2 hot melt
Form hot melt concave surface 21, that is, resistance to plucking bar 111 outer surface and hot melt concave surface 21 match and welding is connected, resistance to plucking bar 111 after connection
Connecting portion 11 inner side and the axial breakout capacity threadeded between main body 2 can be improved.
Specifically, in conjunction with shown in Fig. 2, ringwise, and three resistance to plucking bars 111 axially set resistance to plucking bar 111 along connecting portion 11
Put, the width of resistance to plucking bar 111 is excessive, then the distance between adjacent resistance to plucking bar 111 is too small, between equally adjacent resistance to plucking bar 111
Apart from excessive, then the width of resistance to plucking bar 111 is too small, and the distance between the width of resistance to plucking bar 111 and adjacent resistance to plucking bar 111 are set
It is scheduled on the extraction-resistant behavior that can improve in zone of reasonableness between threaded main body 2 and connecting portion 11, anti-therefore in the present embodiment
The width pulling out bar 111 is 2mm, and the distance between adjacent resistance to plucking bar 111 is 1mm.
In conjunction with shown in Fig. 3, the molten outer peripheral face connecting main body offers the snap groove 12 of annular, the described threaded main body of heat
2 port has resistance to plucking convex edge 22, and resistance to plucking convex edge 22 snaps onto in snap groove 12, and resistance to plucking convex edge 22 is located at the interior of resistance to plucking bar 111
End, has the fillet surface 13 of inclination between hot-melt adhesive paste main body 1 end face and connecting portion 11 inner peripheral surface, this fillet surface 13 arrives snap groove
The air line distance of 12 bottom surfaces is more than the thickness in adapter portion 14, and opening up snap groove 12 is to improve extraction-resistant behavior, and ensures snapping
Thickness at groove 12 is to avoid this to be under high water pressure condition explosion.On the outer peripheral face of connecting portion 11, circumference has three rings
The reinforcement convex edge 112 of shape, strengthens convex edge 112 along the axial direction arrangement of connecting portion 11 for this three, snap groove 12 is located at strengthens convex edge 112
The inner, and the cell wall of strengthening groove 15 seamlessly transits with strengthening convex edge 112 end face, the reinforcement convex edge 112 adjacent with snap groove 12
On outer peripheral face, circumference has some breach 114, forms anti-torsion projection 113, anti-torsion projection 113 circumference between adjacent two breach 114
Uniformly, threaded main body 2 is fused in breach 114, can increase considerably threaded main body 2 and hot-melt adhesive paste main body 1
Between anti-torsion performance.On the end face of hot-melt adhesive paste main body 1, circumference offers the strengthening groove 15 of annular, threaded main body 2
In strengthening groove 15, resistance to plucking bar 111 is located on the inner peripheral surface of connecting portion 11, and strengthening groove 15 is located at hot-melt adhesive paste main body 1 for welding
On end face, strengthen convex edge 112 and be located on the outer peripheral face of connecting portion 11, and anti-torsion projection 113 and snap groove 12 are located at connecting portion 11
The inner, thus comprehensive raising is carried out with the extraction-resistant behavior threadeded between main body 2 and anti-torsion performance to connecting portion 11.
Embodiment two：
With essentially identical, difference is as shown in figure 4, resistance to plucking for the structure of this plastic water supply pipe road pipe joint and embodiment
The cross section of bar 111 is triangular in shape.
Embodiment three：
With essentially identical, difference is as shown in figure 5, resistance to plucking for the structure of this plastic water supply pipe road pipe joint and embodiment
The cross section of bar 111 is rectangular.
Example IV：
The structure of this plastic water supply pipe road pipe joint and embodiment with essentially identical, difference be as shown in fig. 6, due to
The inner hole wall of threaded main body 2 is straight-tube shape, and therefore the inner peripheral surface in connecting portion 11 is in that conical surface rear thread connects inside main body 2
Inner thickness diminishes, and the distance between therefore adjacent two resistance to plucking bars 111 are inwardly tapered into by the external port of connecting portion 11, with
Improve the internal inner bonding strength to threaded main body 2, improve overall extraction-resistant behavior.
Embodiment five：
With essentially identical, difference is as shown in fig. 7, resistance to plucking for the structure of this plastic water supply pipe road pipe joint and embodiment
In the shape of a spiral, and the number of turns of resistance to plucking bar 111 spiral has three circles to bar 111, the pitch of resistance to plucking bar 111 from connecting portion 11 external port to
Inside taper into.
Embodiment six：
With essentially identical, difference is as shown in figure 8, screw thread for the structure of this plastic water supply pipe road pipe joint and embodiment
The end connecting main body 2 has the spiro union portion 23 of tubular, and the outer wall of this spiro union portion 23 has external screw thread, for feed pipe spiral shell
Line connects, and that is, this pipe joint is the external elbow of screw thread.
Embodiment seven：
With essentially identical, difference is as shown in figure 9, this pipe for the structure of this plastic water supply pipe road pipe joint and embodiment
Joint is to connect threeway in screw thread, has two adapter portions 14 with feed pipe phase welding in hot-melt adhesive paste main body 1.
Embodiment eight：
With essentially identical, difference is as shown in Figure 10, should for the structure of this plastic water supply pipe road pipe joint and embodiment
Pipe joint is to connect directly in screw thread, and that is, the adapter portion 14 in hot-melt adhesive paste main body 1 has identical axial line with connecting portion 11.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Although more employing the terms such as hot-melt adhesive paste main body 1, connecting portion 11, resistance to plucking bar 111 herein, it is not precluded from
Possibility using other terms.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；?
They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (10)
1. a kind of plastic water supply pipe road pipe joint, including the hot-melt adhesive paste main body (1) made using hot-melt plastic with adopt work
The threaded main body (2) that engineering plastics are made, described threaded main body (2) hardness is more than the hardness of hot-melt adhesive paste main body (1),
The Single port of described hot-melt adhesive paste main body (1) has tubular connecting portion (11), and described threaded main body (2) passes through hot melt
Mode is connected on the inner peripheral surface and outer peripheral face of connecting portion (11), described connecting portion (11) outer wall has and is prevented from screw thread even
Connect the anti-torsion projection (113) that main body (2) relatively hot-melt adhesive paste main body (1) circumferentially rotates it is characterised in that described connecting portion (11)
Inner peripheral surface be arranged to the conical surface and make the thickness of connecting portion (11) by the inside progressive additive of external port, in the inner peripheral surface of connecting portion (11)
On also there is the protrusion inner peripheral surface resistance to plucking bar (111) with connecting portion (11) integral molding, the length of described resistance to plucking bar (111)
Direction is circumferentially arranged, and the cross section of resistance to plucking bar (111) is arched, triangle or rectangle, described threaded main body (2)
Form the hot melt concave surface (21) of the welding that matches with resistance to plucking bar (111), the periphery of described hot-melt adhesive paste main body (1) after hot-melt adhesive paste
Face opens up snap groove (12), and the port of described threaded main body (2) has resistance to plucking convex edge (22), described resistance to plucking convex edge (22) button
It is connected in snap groove (12), described resistance to plucking convex edge (22) is located at the inner of resistance to plucking bar (111).
2. plastic water supply pipe road pipe joint according to claim 1 is it is characterised in that described hot-melt adhesive paste main body (1)
The other end is adapter portion (14), has falling of inclination between described hot-melt adhesive paste main body (1) end face and connecting portion (11) inner peripheral surface
Edged surface (13), this fillet surface (13) arrives the thickness more than or equal to adapter portion (14) for the air line distance of snap groove (12) bottom surface.
3. plastic water supply pipe road pipe joint according to claim 1 and 2 is it is characterised in that described resistance to plucking bar (111) is in ring
Shape, and resistance to plucking bar (111) has three, this three resistance to plucking bars (111) are axially arranged along connecting portion (11).
4. plastic water supply pipe road pipe joint according to claim 3 is it is characterised in that the width of described resistance to plucking bar (111)
For 1mm～3mm, the distance between three described resistance to plucking bar (111) equidistantly distributeds, and adjacent two resistance to plucking bars (111) are 0.5mm
～1mm.
5. plastic water supply pipe road pipe joint according to claim 3 is it is characterised in that between adjacent two resistance to plucking bars (111)
Distance inwardly tapered into by the external port of connecting portion (11).
6. plastic water supply pipe road pipe joint according to claim 1 and 2 is it is characterised in that described resistance to plucking bar (111) is in spiral shell
Rotation shape, and the number of turns at least two circle of resistance to plucking bar (111) spiral.
7. plastic water supply pipe road pipe joint according to claim 6 is it is characterised in that the pitch of described resistance to plucking bar (111)
Inwardly tapered into by the external port of connecting portion (11).
8. plastic water supply pipe road pipe joint according to claim 1 and 2 it is characterised in that described connecting portion (11) outer
On side face, circumference has the reinforcement convex edge (112) of some annulars, and this some reinforcement convex edge (112) is along the axial direction row of connecting portion (11)
Row, above-mentioned snap groove (12) is located at the inner strengthening convex edge (112), and the cell wall of strengthening groove (15) and reinforcement convex edge (112) end
Face seamlessly transits.
9. plastic water supply pipe road pipe joint according to claim 1 and 2 is it is characterised in that adjacent with snap groove (12)
Strengthen circumference on convex edge (112) outer peripheral face and there are some breach (114), between adjacent two breach (114), form above-mentioned anti-torsion
Projection (113), described threaded main body (2) is fused in breach (114).
10. plastic water supply pipe road pipe joint according to claim 1 and 2 is it is characterised in that described hot-melt adhesive paste main body
(1) on end face, circumference offers the strengthening groove (15) of annular, and the welding of described threaded main body (2) is in strengthening groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148029.XA CN106382431B (en) | 2016-12-13 | 2016-12-13 | A kind of plastic water supply pipe road pipe fitting |
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|---|---|---|---|
| CN201611148029.XA CN106382431B (en) | 2016-12-13 | 2016-12-13 | A kind of plastic water supply pipe road pipe fitting |
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| CN106382431A true CN106382431A (en) | 2017-02-08 |
| CN106382431B CN106382431B (en) | 2019-09-13 |
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| JP2005106175A (en) * | 2003-09-30 | 2005-04-21 | Toyoda Gosei Co Ltd | Hose connection structure and hose connection method |
| CN202469343U (en) * | 2012-03-01 | 2012-10-03 | 宁波波尔管业开发有限公司 | PP-R water supply connecting pipe |
| CN202612911U (en) * | 2012-05-28 | 2012-12-19 | 武汉金牛经济发展有限公司 | Sliding compact type copper pipe fitting for composite pipe |
| CN204829050U (en) * | 2015-08-15 | 2015-12-02 | 山东龙口特种胶管有限公司 | Glue connection with locking stopping groove |
| CN205101758U (en) * | 2015-10-19 | 2016-03-23 | 叶福西 | Tooth coupling in plastics water feeding pipe screw thread |
| CN205298929U (en) * | 2015-12-17 | 2016-06-08 | 王志强 | Compound coupling of feedwater |
| CN105526432A (en) * | 2016-03-07 | 2016-04-27 | 江苏凯兴管道有限公司 | Steel-plastic meshed composite pipe with detachment preventive function |
| CN206290887U (en) * | 2016-12-13 | 2017-06-30 | 叶福西 | A kind of plastic water supply pipe road pipe joint |
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