CN205101758U - Tooth coupling in plastics water feeding pipe screw thread - Google Patents

Tooth coupling in plastics water feeding pipe screw thread Download PDF

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Publication number
CN205101758U
CN205101758U CN201520811254.1U CN201520811254U CN205101758U CN 205101758 U CN205101758 U CN 205101758U CN 201520811254 U CN201520811254 U CN 201520811254U CN 205101758 U CN205101758 U CN 205101758U
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joint
main
threaded
groove
screw thread
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叶福西
叶伦
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叶福西
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Abstract

The utility model provides a tooth coupling in plastics water feeding pipe screw thread belongs to water pipe technical field. It has solved current coupling, and to stretch out the length on wall body surface longer, leads to the inconvenient problem of installation. This tooth coupling in plastics water feeding pipe screw thread including hot melt connection subject and screw connection subject, has connecting portion on the hot melt connection subject, screw connection subject one end has screw portion, and this screw portion lies in insidely, has the internal thread on screw portion's the inside wall, and another pot head of screw connection subject is established on connecting portion, and connecting portion lie in the inserting groove, and screw connection subject adopts engineering plastics to make, and hot melt connection subject adoption thermally melting plastics are made. This tooth coupling in plastics water feeding pipe screw thread has shortened the length of threaded connection main part for the structure is compacter, and can bear great water pressure, avoids appearing under high water pressure the infiltration phenomenon.

Description

Tooth pipe joint in a kind of plastic water supply pipe road screw thread
Technical field
The utility model belongs to water tube component technical field, relates to tooth pipe joint in a kind of plastic water supply pipe road screw thread.
Background technique
Pipe joint is the connection fittings between pipeline and pipeline, can the link of dismounting between accessory and pipeline, act as indispensable key player in the tube, it is one of main composition part of pipeline, pipe joint kind is more, is widely used, and wherein applies comparatively concentrated in the connection of supply pipe, supply pipe needs height water being transported to tens meters even higher, therefore requires higher to the pressure-bearing of pipe joint, sealability.
As Chinese invention patent application (application number: 02205010.8) disclose a kind of feedwater piping screwed pipe joint, comprise the pipe threads be made up of PC material and the PP-R pipe fitting be connected with its one end, male and fomale(M&F) is circumferentially had at the outer surface of the connecting end of pipe threads, PP-R pipe fitting one end is coated on outside this male and fomale(M&F), this pipe joint utilizes PC material as pipe threads, it and PP-R have thermal coefficient of expansion closely, therefore both combine well, but the pipe threads of this pipe joint adopts PC engineering plastics to make, there is larger rigidity and hardness, rigidity and the more weak PP-R pipe fitting of hardness are then coated on outside pipe threads, when this pipe joint bears larger hydraulic pressure, under effect of water pressure, although pipe threads can bear this pressure and keep original form constant, but PP-R pipe but can under this effect of water pressure dilatancy, in installation process, be subject to spanner turn makes pipe threads and PP-R pipe fitting loosen, sealing between PP-R tube and tube threaded piece is caused to be deteriorated, there is infiltration phenomenon.
And as utility application (application number: 201420553645.3) disclose a kind of supply pipe pipe joint, comprise hot-melt adhesive paste main body and the tubular main body that is threaded, hot-melt adhesive paste main body has in tubular and the joint connected with hot-melt adhesive paste main body, the one end of the main body that is threaded has screw thread, the other end is set on joint, and be threaded main body madial wall and joint outer side wall fit and are connected, hot-melt adhesive paste main body has the attachment hole be connected with tubing welding, the main body that is threaded adopts engineering plastics to make, hot-melt adhesive paste main body adopts PP-R or PE to make, this supply pipe pipe joint can bear larger hydraulic pressure, avoid under high hydraulic pressure effect, occur infiltration phenomenon, but because the main body that is threaded needs to be connected with supply pipe by screw thread, the length of the main body that is threaded is longer, and the degree of depth that supply pipe is embedded in body of wall is set, therefore connect main body to stretch out the length of surface of wall longer being installed to rear thread in body of wall, cause inconvenience is installed.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, propose tooth pipe joint in a kind of plastic water supply pipe road screw thread, in this plastic water supply pipe road screw thread, tooth pipe joint shortens the length of the main body that is threaded, make structure compacter, and larger hydraulic pressure can be born, avoid under high hydraulic pressure effect, occur infiltration phenomenon.
The purpose of this utility model realizes by following technical proposal: tooth pipe joint in a kind of plastic water supply pipe road screw thread, comprise hot-melt adhesive paste main body and the tubular main body that is threaded, it is characterized in that, described hot-melt adhesive paste main body has in tubular and the joint be connected with hot-melt adhesive paste main body, one end of the described main body that is threaded has the spiro union portion of tubular, this spiro union portion is positioned at the inside of the main body that is threaded, the madial wall of described spiro union portion has internal thread, annular inserting groove is formed between the outer side wall of spiro union portion and the madial wall of the main body that is threaded, the other end of the described main body that is threaded is set on joint, and connection part is in inserting groove, the outer side wall of described joint fits with the madial wall of the main body that is threaded and is connected, the described main body that is threaded adopts engineering plastics to make, described hot-melt adhesive paste main body adopts hot-melt plastic to make.
Pipe joint can be that screw thread is direct, one in screw thread threeway or threaded elbow, when pipe joint be screw thread direct time, joint is the end of hot-melt adhesive paste main body one end, the other end of hot-melt adhesive paste main body has attachment hole, when pipe joint is screw thread threeway, joint is the port part in hot-melt adhesive paste main body wall, and the two ends of hot-melt adhesive paste main body all have attachment hole, when pipe joint is threaded elbow, joint is the end of hot-melt adhesive paste main body one end, the other end of hot-melt adhesive paste main body has attachment hole, the above-mentioned attachment hole pointed out for supply pipe hot-melt adhesive paste, the main body that is threaded to be set on joint and to play connection function, and spiro union portion is positioned at and is threaded body interior and stretches into joint, for connecting tubing, the tie point of the main body that is namely threaded and supply pipe is positioned at joint, the length of the main body that is therefore threaded is shorter, make the overall structure of pipe joint compacter, the main body that is threaded adopts engineering plastics to make, engineering plastics can bear certain External Force Acting, there is good mechanical property and Nai Gao, cryogenic property, dimensional stability is better, be mainly used in the field that engineering industry etc. is high-end, the internal thread of the main body that is therefore threaded also has higher join strength, and hot-melt adhesive paste main body is hot-melt plastic, PP-R can be adopted to make, PP-R is atactic copolymerized polypropene again, its toughness of products is good, processibility is excellent, under higher temperature, creep-resistant property is good, be widely used in tubing manufacture, also the manufacture of PE material can be adopted, can be connected with supply pipe by modes such as weldings, the main body that is threaded is set in outside joint, therefore when this pipe joint bears higher hydraulic pressure, the mechanical property that the main body that is threaded is higher and rigidity can be avoided occurring expanding, also the shape of joint is retrained simultaneously, joint is avoided to occur dilatancy, improve the dimensional stability of pipe joint entirety, namely can avoid occurring infiltration phenomenon under higher hydraulic pressure.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, the width of described inserting groove is increased to notch gradually by bottom land, and the madial wall of described joint and the outer side wall of spiro union portion fit and be connected.Namely the outer side surface of joint inner side surface and spiro union portion is the round table surface fitted, there is degree of laminating preferably, and when supply pipe spiral access spiro union portion, supply pipe produces lateral extrusion to spiro union portion, spiro union portion is compressed mutually with joint, thus indirectly improves the sealing be threaded between main body and hot-melt adhesive paste main body.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, on described joint madial wall, circumference has spacing recessed shoulder, and in described spacing recessed shoulder end face, circumference offers locating slot, and the end of described spiro union portion is resisted against in locating slot.Locating slot plays positioning seat to spiro union portion, has higher stability when making to be connected with supply pipe.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, the outer side wall of described joint offers vertically the connecting groove one of some annulars, the madial wall of the described main body that is threaded has vertically the connection convex edge one of some annulars, and connecting groove one and joint have identical center line, connect convex edge one, with the main body that is threaded, there is identical center line, described connection convex edge one is plugged in connecting groove one, and connects the sidewall of convex edge one and the cell wall of connecting groove one and fit and be connected.Connection convex edge one is connected mutually with connecting groove one and can improves the join strength of be threaded main body and joint, thus improves breakout capacity, increases the area of contact of be threaded main body madial wall and joint outer side wall simultaneously, improves sealing between the two.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, on the end face of described joint, circumference offers connecting groove two, on described inserting groove bottom surface, circumference has connection convex edge two, described connection convex edge two is plugged in connecting groove two, and connects the sidewall of convex edge two and the cell wall of connecting groove two and fit and be connected.In like manner, joint end face and inserting groove bottom surface lean, and connect convex edge two with connecting groove two-phase and be connected, the area of contact of joint and the main body that is threaded can be improved, increase sealing, also can increase the radial constraint to joint simultaneously, avoid its dilatancy.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, on the outer side wall of described joint, circumference has some limit convex edges, described in be threaded main body madial wall on circumference offer some restraining grooves, described limit convex is connected in restraining groove along grafting.Limit convex, along matching with restraining groove, can be avoided the main body opposing connections circumference rotation that is threaded, improve anti-torsion ability.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, the length of described spiro union portion is less than the length of the main body that is threaded.The main body that makes to be threaded has good restriction ability to joint, avoids its dilatancy.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, on the outer side wall of described joint, circumference offers seal groove, is arranged with seal ring in described seal groove, described in the be threaded tip inside wall of main body be pressed on seal ring.Seal ring can increase the sealing be threaded between main body and joint, avoids occurring infiltration phenomenon.
In above-mentioned plastic water supply pipe road screw thread in tooth pipe joint, described joint presses welding to be connected with the main body that is threaded by noting.Namely, after hot-melt adhesive paste main body and joint integrated injection molding thereof are also shaped, the main body that will be threaded high-pressure injection moulding, on joint, has higher join strength and sealing.
Compared with prior art, in this plastic water supply pipe road screw thread, tooth pipe joint has the following advantages:
1, because the main body that is threaded is set on joint and play connection function, and spiro union portion is positioned at and is threaded body interior and stretches into joint, for connecting tubing, the tie point of the main body that is namely threaded and supply pipe is positioned at joint, the length of the main body that is therefore threaded is shorter, makes the overall structure of pipe joint compacter.
2, because spiro union portion stretches in joint, when supply pipe spiral access spiro union portion, supply pipe produces lateral extrusion to spiro union portion, and spiro union portion is compressed mutually with joint, thus indirectly improves the sealing be threaded between main body and hot-melt adhesive paste main body.
3, be coated on joint because the main body that is threaded is sheathed, and the main body that is threaded adopts the engineering plastics that mechanical strength is higher, and joint adopts PP-R to make, therefore the mechanical property that the main body that is threaded is higher and rigidity can be avoided occurring expanding, also the shape of joint is retrained simultaneously, avoid joint to occur dilatancy, improve the dimensional stability of pipe joint entirety, namely can avoid occurring infiltration phenomenon under higher hydraulic pressure.
4, be also connected with connecting groove one and connecting groove two by being connected convex edge one, connection convex edge two owing to being threaded between main body with joint, namely the area of contact of joint and the main body that is threaded can be improved, increase sealing, also can improve the join strength be threaded between main body and joint simultaneously, there is higher breakout capacity.
Accompanying drawing explanation
Fig. 1 is the partial structurtes sectional view of plastic water supply pipe road screw thread female elbow.
Fig. 2 is the partial structurtes sectional view of hot-melt adhesive paste main body.
Fig. 3 is the partial structurtes sectional view of main body of being threaded.
In figure, 1, hot-melt adhesive paste main body; 11, joint; 111, connecting groove one; 112, connecting groove two; 113, limit convex edge; 12, spacing recessed shoulder; 121, locating slot; 13, seal groove; 2, be threaded main body; 21, spiro union portion; 22, inserting groove; 23, convex edge one is connected; 24, convex edge two is connected; 25, restraining groove; 3, seal ring.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, tooth pipe joint in a kind of plastic water supply pipe road screw thread, pipe joint can be that screw thread is direct, one in screw thread threeway or threaded elbow, comprise hot-melt adhesive paste main body 1 and the tubular main body 2 that is threaded, hot-melt adhesive paste main body 1 has in tubular and the joint 11 be connected with hot-melt adhesive paste main body 1, when pipe joint be screw thread direct time, joint 11 is the end of hot-melt adhesive paste main body 1 one end, the other end of hot-melt adhesive paste main body 1 has attachment hole, when pipe joint is screw thread threeway, joint 11 is the port part on hot-melt adhesive paste main body 1 sidewall, and the two ends of hot-melt adhesive paste main body 1 all have attachment hole, when pipe joint is threaded elbow, joint 11 is the end of hot-melt adhesive paste main body 1 one end, the other end of hot-melt adhesive paste main body 1 has attachment hole, above-indicated attachment hole is used for and supply pipe hot-melt adhesive paste.One end of the main body that is threaded 2 has the spiro union portion 21 of tubular, this spiro union portion 21 is positioned at the inside of the main body 2 that is threaded, the madial wall of spiro union portion 21 has internal thread, annular inserting groove 22 is formed between the outer side wall of spiro union portion 21 and the madial wall of the main body 2 that is threaded, the other end of the main body that is threaded 2 is set on joint 11, and joint 11 is positioned at inserting groove 22, the outer side wall of described joint 11 fits with the madial wall of the main body 2 that is threaded and is connected, the main body that is threaded 2 to be set on joint 11 and to play connection function, and spiro union portion 21 to be positioned at the main body 2 that is threaded inner and stretch into joint 11, for connecting tubing, namely the main body that is threaded 2 is positioned at joint 11 with the tie point of supply pipe, the length of the main body that is therefore threaded 2 is shorter, make the overall structure of pipe joint compacter.The main body that is threaded 2 adopts engineering plastics to make, engineering plastics can bear certain External Force Acting, there is good mechanical property and Nai Gao, cryogenic property, dimensional stability is better, be mainly used in the field that engineering industry etc. is high-end, the internal thread of the main body that is therefore threaded 2 also has higher join strength, and hot-melt adhesive paste main body 1 adopts PP-R to make, PP-R is atactic copolymerized polypropene again, its toughness of products is good, processibility is excellent, under higher temperature, creep-resistant property is good, be widely used in tubing manufacture, can be connected with supply pipe by modes such as weldings, the main body that is threaded 2 is set in outside joint 11, therefore when this pipe joint bears higher hydraulic pressure, the mechanical property that the main body that is threaded 2 is higher and rigidity can be avoided occurring expanding, also the shape of joint 11 is retrained simultaneously, joint 11 is avoided to occur dilatancy, improve the dimensional stability of pipe joint entirety, namely can avoid occurring infiltration phenomenon under higher hydraulic pressure.
Specifically, shown in composition graphs 2, Fig. 3, the width of inserting groove 22 is increased to notch gradually by bottom land, the madial wall of joint 11 and the outer side wall of spiro union portion 21 fit and are connected, namely the outer side surface of joint 11 inner side surface and spiro union portion 21 is the round table surface fitted, there is degree of laminating preferably, and when supply pipe spiral access spiro union portion 21, supply pipe produces lateral extrusion to spiro union portion 21, spiro union portion 21 is compressed with joint 11 phase, thus indirectly improves the sealing be threaded between main body 2 and hot-melt adhesive paste main body 1.The length of spiro union portion 21 is less than the length of the main body 2 that is threaded, and the main body 2 pairs of joints 11 that make to be threaded have good restriction ability, avoid its dilatancy.On the outer side wall of joint 11, circumference offers seal groove 13, seal ring 3 is arranged with in seal groove 13, the tip inside wall of the main body that is threaded 2 is pressed on seal ring 3, and seal ring 3 can increase the sealing be threaded between main body 2 and joint 11, avoids occurring infiltration phenomenon.On joint 11 madial wall, circumference has spacing recessed shoulder 12, on spacing recessed shoulder 12 end face, circumference offers locating slot 121, the end of spiro union portion 21 is resisted against in locating slot 121, and locating slot 121 pairs of spiro union portions 21 play positioning seat, have higher stability when making to be connected with supply pipe.Joint 11 presses welding to be connected with the main body 2 that is threaded by noting, and after namely hot-melt adhesive paste main body 1 and joint 11 integrated injection molding thereof are also shaped, the main body that will be threaded 2 high-pressure injection moulding, on joint 11, has higher join strength and sealing.
The outer side wall of joint 11 offers vertically the connecting groove 1 of some annulars, the madial wall of the main body that is threaded 2 has vertically the connection convex edge 1 of some annulars, and connecting groove 1 has identical center line with joint 11, connect convex edge 1, with the main body 2 that is threaded, there is identical center line, connecting convex edge 1 is plugged in connecting groove 1, and connect the sidewall of convex edge 1 and the cell wall of connecting groove 1 and fit and be connected, connection convex edge 1 is connected mutually with connecting groove 1 and can improves the join strength of be threaded main body 2 and joint 11, thus raising breakout capacity, increase the area of contact of be threaded main body 2 madial wall and joint 11 outer side wall simultaneously, improve sealing between the two.On the end face of joint 11, circumference offers connecting groove 2 112, on inserting groove 22 bottom surface, circumference has connection convex edge 2 24, connecting convex edge 2 24 is plugged in connecting groove 2 112, and connect the sidewall of convex edge 2 24 and the cell wall of connecting groove 2 112 and fit and be connected, in like manner, joint 11 end face and inserting groove 22 bottom surface lean, and connect convex edge 2 24 with connecting groove 2 112 and be connected mutually, the area of contact of joint 11 and the main body 2 that is threaded can be improved, increase sealing, also can increase the radial constraint to joint 11 simultaneously, avoid its dilatancy.On the outer side wall of joint 11, circumference has some limit convexes along 113, on the madial wall of the main body that is threaded 2, circumference offers some restraining grooves 25, limit convex is connected in restraining groove 25 along 113 grafting, limit convex matches along 113 with restraining groove 25, the main body 2 opposing connections 11 circumference rotation that is threaded can be avoided, improve anti-torsion ability.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as hot-melt adhesive paste main body 1, joint 11, connecting groove 1 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims (9)

1. tooth pipe joint in a plastic water supply pipe road screw thread, comprise hot-melt adhesive paste main body (1) and the tubular main body that is threaded (2), it is characterized in that, described hot-melt adhesive paste main body (1) has in tubular and the joint (11) be connected with hot-melt adhesive paste main body (1), one end of the described main body that is threaded (2) has the spiro union portion (21) of tubular, this spiro union portion (21) is positioned at the inside of the main body that is threaded (2), the madial wall of described spiro union portion (21) has internal thread, annular inserting groove (22) is formed between the outer side wall of spiro union portion (21) and the madial wall of the main body that is threaded (2), the other end of the described main body that is threaded (2) is set on joint (11), and joint (11) is positioned at inserting groove (22), the outer side wall of described joint (11) fits with the madial wall of the main body that is threaded (2) and is connected, the described main body that is threaded (2) adopts engineering plastics to make, described hot-melt adhesive paste main body (1) adopts hot-melt plastic to make.
2. tooth pipe joint in plastic water supply pipe road according to claim 1 screw thread, it is characterized in that, the width of described inserting groove (22) is increased to notch gradually by bottom land, and the madial wall of described joint (11) and the outer side wall of spiro union portion (21) fit and be connected.
3. tooth pipe joint in plastic water supply pipe road according to claim 2 screw thread, it is characterized in that, on described joint (11) madial wall, circumference has spacing recessed shoulder (12), on described spacing recessed shoulder (12) end face, circumference offers locating slot (121), and the end of described spiro union portion (21) is resisted against in locating slot (121).
4. tooth pipe joint in the plastic water supply pipe road screw thread according to claim 1 or 2 or 3, it is characterized in that, the outer side wall of described joint (11) offers vertically the connecting groove one (111) of some annulars, the madial wall of the described main body that is threaded (2) has vertically the connection convex edge one (23) of some annulars, and connecting groove one (111) has identical center line with joint (11), connect convex edge one (23), with the main body that is threaded (2), there is identical center line, described connection convex edge one (23) is plugged in connecting groove one (111), and connect the sidewall of convex edge one (23) and the cell wall of connecting groove one (111) and fit and be connected.
5. tooth pipe joint in the plastic water supply pipe road screw thread according to claim 1 or 2 or 3, it is characterized in that, on the end face of described joint (11), circumference offers connecting groove two (112), on described inserting groove (22) bottom surface, circumference has connection convex edge two (24), described connection convex edge two (24) is plugged in connecting groove two (112), and connects the sidewall of convex edge two (24) and the cell wall of connecting groove two (112) and fit and be connected.
6. tooth pipe joint in plastic water supply pipe road according to claim 4 screw thread, it is characterized in that, on the outer side wall of described joint (11), circumference has some limit convexes along (113), on the madial wall of the described main body that is threaded (2), circumference offers some restraining grooves (25), and described limit convex is connected in restraining groove (25) along (113) grafting.
7. tooth pipe joint in the plastic water supply pipe road screw thread according to claim 1 or 2 or 3, is characterized in that, the length of described spiro union portion (21) is less than the length of the main body that is threaded (2).
8. tooth pipe joint in the plastic water supply pipe road screw thread according to claim 1 or 2 or 3, it is characterized in that, on the outer side wall of described joint (11), circumference offers seal groove (13), be arranged with seal ring (3) in described seal groove (13), described in the be threaded tip inside wall of main body (2) be pressed on seal ring (3).
9. tooth pipe joint in the plastic water supply pipe road screw thread according to claim 1 or 2 or 3, is characterized in that, described joint (11) presses welding to be connected with the main body that is threaded (2) by noting.
CN201520811254.1U 2015-10-19 2015-10-19 Tooth coupling in plastics water feeding pipe screw thread Active CN205101758U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520811254.1U CN205101758U (en) 2015-10-19 2015-10-19 Tooth coupling in plastics water feeding pipe screw thread

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Application Number Priority Date Filing Date Title
CN201520811254.1U CN205101758U (en) 2015-10-19 2015-10-19 Tooth coupling in plastics water feeding pipe screw thread

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382431A (en) * 2016-12-13 2017-02-08 叶福西 Plastic pipe joint of water supply pipeline

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382431A (en) * 2016-12-13 2017-02-08 叶福西 Plastic pipe joint of water supply pipeline

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