CN213299209U

CN213299209U - Pipe joint

Info

Publication number: CN213299209U
Application number: CN202022275269.4U
Authority: CN
Inventors: 叶福西; 叶伦; 叶文斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-05-28
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a pipe joint belongs to hot melt water pipe head technical field. It has been solved current coupling and has sealed need to use traditional group to wind the thread seal area, with high costs and convenient safe technical problem inadequately. This coupling includes hot melt connecting body and threaded connection main part, a port of threaded connection main part has the connecting portion that are the tube-shape, the inner edge of hot melt connecting body has the annular of following circumference extension and keeps off the edge, the connecting portion spiro union is inserted and is located in the hot melt connecting body, the annular keeps off to have along the last seal groove one that extends of circumference, seal groove one is embedded to be equipped with sealing washer one, the surface that the annular kept off the edge and the terminal surface of connecting portion all have along circumference interval arrangement prevent the ratchet that turns back, when connecting portion feed along the screw thread direction insert in the hot melt connecting body and make two prevent that the ratchet looks lock of turning back forms when spacing along the reversal direction terminal surface and the sealing washer one of connecting. The utility model discloses be connected with the exterior part and exempt from to use the thread seal tape, and low in production cost can reduce heavy metal pollution.

Description

Pipe joint

Technical Field

The utility model belongs to the technical field of the hot melt water pipe head, a pipe joint such as PPR, PE, hot melt pipe fitting, threaded connection is related to.

Background

The pipe joint is a connecting fitting between pipelines, is a connecting piece which can be disassembled and assembled between fittings and pipelines, plays an indispensable important role in pipe fittings, is one of main components of the pipelines, has more types of pipe joints and wide application, is concentrated in connection of a water supply pipe, and the water supply pipe needs to convey water to a height of dozens of meters or even higher, so that the requirements on the pressure bearing performance and the sealing performance of the pipe joint are higher.

The applicant previously applied for a plastic water supply pipeline threaded outer tooth pipe joint with the publication number of CN205101756U, which comprises a hot-melt connecting main body and a threaded connecting main body, wherein the hot-melt connecting main body is provided with a connecting part, one end of the threaded connecting main body is sleeved on the connecting part, the other end of the threaded connecting main body is provided with a screwing part and a sealing part, the screwing part is positioned outside the threaded connecting main body, the screwing part is provided with an external thread, the sealing part is positioned inside the threaded connecting main body, and the connecting part is positioned in an inserting groove.

The product has a compact and stable structure, and the applicant continues to research and develop on the basis to further optimize the product, and the product is in threaded connection with other external parts, so that the problem that a traditional winding raw material belt is not used is solved, higher sealing performance is ensured at the threaded connection position, and the product is convenient and safe to install.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a coupling, the utility model aims to solve the technical problem that: the production cost is reduced under the condition of ensuring the sealing effect, and the sealing device is more environment-friendly.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a pipe joint, includes hot melt connecting body and threaded connection main part, its characterized in that, a port of threaded connection main part has the connecting portion that are the tube-shape, hot melt connecting body's inner edge has the annular of extending along circumference and keeps off the edge, the connecting portion spiro union is inserted and is located in the hot melt connecting body, the annular keeps off and has the seal groove one along circumference extension on the edge, seal groove one is embedded to be equipped with sealing washer one, the annular keep off the surface on edge with the terminal surface of connecting portion all has along circumference interval arrangement prevent the reverse ratchet, work as connecting portion feed along the screw thread direction insert in the hot melt connecting body and make two prevent reverse ratchet looks locks along reverse direction formation when spacing terminal surface of this connecting portion with sealing washer one supports to lean on to seal.

The pipe joint is in threaded connection, the threaded connection form is a connection mode of a threaded tee or a threaded elbow or a threaded connection, and the hot melt connection main body and the threaded connection main body can be connected with pipe fittings of different pipes respectively, so that the hot melt connection main body is connected with the threaded connection main body, and communication of different pipe fittings, valves, taps and the like is realized. The cylindrical connecting part is arranged at one port of the threaded connecting main body, the connecting part is inserted into the hot-melt connecting main body in a screwed mode, the annular blocking edge extending along the circumferential direction is arranged on the inner edge of the hot-melt connecting main body, the sealing groove is arranged on the annular blocking edge, the first sealing ring is embedded in the annular blocking edge, the anti-reverse ratchets arranged along the circumferential direction at intervals are arranged on the surface of the annular blocking edge and the end surface of the connecting part, the end surface of the connecting part abuts against the first sealing ring when the anti-reverse ratchets are buckled and limited, the anti-reverse ratchets have elasticity of materials, the anti-reverse ratchets can be elastically deformed along the inclined plane and are buckled when being screwed, only small assembling acting force is needed, the anti-reverse ratchets only need to advance and retreat after being buckled, the hot-melt connecting main body and the threaded connecting main body are tightly screwed into a whole, in addition, the first sealing, and then make the ratchet of preventing reversing keep the lock inseparable, avoid the hot melt connecting body and the threaded connection main part pine that assemble each other to take off, the adapter can realize the lock fit through the spiro union assembly like this and can not reverse the pine and take off when being connected with the external part, and the technology and the operation of removing the secondary and moulding plastics are more convenient, and the material that use metal insert consumes and heavy metal pollution in addition are avoided, and manufacturing cost is lower.

In the pipe joint, the end face of the connecting part is provided with a first annular boss wound on the periphery of the anti-reverse ratchet, and when the two anti-reverse ratchets are buckled and form limit along the reverse direction, the first annular boss can be inserted into the first sealing groove and abuts against the first sealing ring. The first annular boss is arranged on the end face of the connecting portion in a winding mode and is arranged on the periphery of the anti-reverse ratchet, so that the first annular boss can provide a certain protection effect for the anti-reverse ratchet at the position, the first sealing ring is prevented from shifting during installation, the first annular boss is arranged and can be inserted into the first sealing groove and abut against the first sealing ring, and therefore labyrinth sealing can be further formed between the first annular boss and the first sealing groove after assembly, and the sealing effect of the connecting portion is enhanced.

In the pipe joint, the end face of the threaded connection main body, facing the hot-melt connection main body, is provided with a second sealing groove extending along the circumferential direction and surrounding the periphery of the connection part, a second sealing ring is embedded in the second sealing groove, and when the connection part is inserted in the hot-melt connection main body in a screwed mode, the end face of the hot-melt connection main body can abut against the second sealing ring. The sealing groove II is arranged on the end face of the threaded connecting body facing the hot-melt connecting body, and the sealing ring II is embedded, so that the end face of the hot-melt connecting body can abut against the sealing ring II when the connecting part is inserted into the hot-melt connecting body in a screwed mode, the sealing ring II can form sealing from the outer side, and the sealing effect of the joint of the hot-melt connecting body and the threaded connecting body is further guaranteed.

In the pipe joint, the end face of the hot-melt connecting main body is provided with a second annular boss, and when the connecting part is inserted into the hot-melt connecting main body in a threaded manner, the second annular boss can be inserted into the second sealing groove and abutted against the second sealing ring. The end face of the hot melting connecting main body is provided with the second annular boss matched with the second sealing groove, so that a second labyrinth seal is further formed, and the sealing effect is enhanced.

In the pipe joint, the other end face of the threaded connection main body is provided with a third sealing groove arranged around the port, the third sealing groove is located at the edge of the port, and a third sealing ring is embedded in the third sealing groove. Through another terminal surface setting at the threaded connection main part around the seal groove three that the port was arranged, when the other end and the external member of threaded connection main part were connected like this, can set up three sealing washers in the seal groove and form with the external member tip and lean on sealedly, remove traditional group from around the sealed process in raw material area, make the operation more convenient.

In the pipe joint, the other end of the threaded connection body is provided with a cylindrical adapter part, the outer peripheral surface of the adapter part is provided with a conical thread, and the three positions of the sealing groove are located at the root of the conical thread. Through another port setting at threaded connection main part be the switching portion of tube-shape, do benefit to like this and have the pipe fitting of internal thread and the other end cooperation of threaded connection main part, set up seal groove three in addition and be located the root position of conical thread and inlay and establish sealing washer three, also have the effect that can exempt from to wind the thread seal area, and improve the suitability.

As another scheme, the inner edge of the other port of the threaded connection main body is provided with a connecting thread, the root of the connecting thread is provided with an annular step part, the surface of the annular step part facing the connecting thread side is provided with a sealing groove four extending along the circumferential direction, and a sealing ring four is embedded in the sealing groove four. Through set up annular step portion at another port inner edge of threaded connection main part, and set up seal groove four and inlay seal ring four at annular step portion's outside surface, when the external member that has the external screw thread cooperates with threaded connection main part like this, if the screw thread section of external member is longer then can support to seal with seal ring four formation in the seal groove four when screwing up, if the screw thread section is shorter then the external member can support to seal with seal ring three in the seal groove three when screwing up, can satisfy the connection sealing demand of different external members better, exempt from the sealed process of traditional group around the raw material area and the suitability is better.

In the above pipe joint, the connection thread at the inner edge of the other port of the threaded connection body is a conical thread. The conical thread is arranged on the inner edge of the other port of the threaded connection main body, so that the assembly convenience can be improved under the condition of ensuring the sealing effect.

In the pipe joint, the hot-melt connecting main body is a hot-melt plastic pipe fitting, and the threaded connecting main body is an engineering plastic pipe fitting. The hot-melt plastic can be made of materials such as PPR or PE and the like, is fixedly connected with the hot-melt pipe through hot melting, and has good sealing effect; the engineering plastic has higher mechanical property and superior high and low temperature resistance, and replaces the metal insert threads, which is the purpose of the utility model.

In the pipe joint, the outer peripheral surface of the connecting part is in threaded fit with the inner side wall of the port of the hot-melt connecting body, and the outer peripheral surface of the threaded connecting body is provided with a plurality of grooves which are circumferentially arranged at intervals. The outer peripheral face of the connecting portion and the inner side wall of the port of the hot-melt connecting body are assembled in a threaded mode, and the outer peripheral face of the hot-melt connecting body is provided with grooves which are circumferentially arranged at intervals, so that the special spanner cannot slip when being screwed down in the assembling process.

Compared with the prior art, the utility model has the advantages as follows:

the pipe joint is characterized in that a first sealing ring is embedded in the bottom of an internal thread of the hot-melt connecting main body, a second sealing ring is arranged at the port of the threaded connecting main body and embedded in the second sealing ring, and an anti-reverse ratchet is arranged to deform and buckle when being screwed down and only advance and retreat, so that the hot-melt connecting main body and the threaded connecting main body can be integrally locked and ensure the sealing effect through screwing down and assembling, the process difficulty of assembling and manufacturing is greatly reduced, the production cost is reduced, and the heavy metal pollution is reduced.

Drawings

FIG. 1 is a perspective view of an assembled state of the embodiment.

FIG. 2 is a schematic view of a partial cross-sectional structure of an assembled state of the embodiment.

FIG. 3 is a schematic perspective view of a component state according to an embodiment.

FIG. 4 is a schematic perspective view of a hot-melt connecting body according to a first embodiment.

FIG. 5 is a perspective view of the second embodiment in an assembled state.

FIG. 6 is a schematic view of a partial cross-sectional structure in an assembled state according to a second embodiment.

FIG. 7 is a schematic perspective view of a two-part structure according to the embodiment.

FIG. 8 is a schematic structural diagram of the assembled state of the hot-melt connecting body and the threaded connecting body in the first embodiment when the hot-melt connecting body is a tee pipe.

FIG. 9 is a schematic view showing the structure of the hot-melt connecting body in an assembled state with the screw connecting body according to the first embodiment when the hot-melt connecting body is a bent pipe.

FIG. 10 is a schematic structural view showing the state of assembly of the hot-melt connecting body with the threaded connecting body according to the second embodiment when the hot-melt connecting body is a tee pipe.

FIG. 11 is a schematic view showing the structure of the hot-melt connecting body in an assembled state with the threaded connecting body according to the second embodiment.

In the figure, 1, a hot-melt connecting body; 11. an annular blocking edge; 12. a first sealing groove; 13. a second annular boss;

2. a threaded connection body; 21. a connecting portion; 211. a first annular boss; 22. a second sealing groove; 23. a switching part; 24. a conical thread; 25. a third sealing groove; 26. an annular step portion; 27. a sealing groove IV; 28. a groove;

3. a first sealing ring; 4. an anti-reverse ratchet; 5. a second sealing ring; 6. a third sealing ring; 7. and a sealing ring IV.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 4, 8 and 9, the pipe joint includes a hot-melt connecting body 1 and a threaded connecting body 2, a cylindrical connecting portion 21 is provided at a port of the threaded connecting body 2, an annular blocking edge 11 extending in the circumferential direction is provided at an inner edge of the hot-melt connecting body 1, the connecting portion 21 is inserted into the hot-melt connecting body 1 in a threaded manner, specifically, an outer peripheral surface of the connecting portion 21 is in threaded engagement with an inner side wall of the port of the hot-melt connecting body 1, a sealing groove first 12 extending in the circumferential direction is provided on the annular blocking edge 11, a sealing ring first 3 is embedded in the sealing groove first 12, and an end surface of the connecting portion 21 abuts against and is. The hot melt connecting body 1 and the threaded connecting body 2 can be respectively connected with pipe fittings made of different materials, and the hot melt connecting body 1 is communicated with the threaded connecting body 2, so that the connection of different pipe fittings is realized. The hot-melting connecting main body 1 is a hot-melting plastic piece, and the threaded connecting main body 2 is an engineering plastic piece. The hot-melt plastic can be made of PPR or PE materials, has good creep resistance at higher temperature, is fixedly connected with the water supply pipe through welding, and has good sealing effect; the engineering plastic has high mechanical performance, high and low temperature resistance and high size stability. The cylindrical connecting portion 21 is arranged at one port of the threaded connecting body 2, the connecting portion 21 is inserted into the hot-melt connecting body 1 in a threaded manner, an annular blocking edge 11 extending along the circumferential direction is arranged on the inner edge of the hot-melt connecting body 1, a first sealing groove 12 is formed in the annular blocking edge 11, a first sealing ring 3 is embedded in the annular blocking edge 11, the end face of the connecting portion 21 abuts against the first sealing ring 3 to form sealing, anti-reverse ratchets 4 arranged at intervals along the circumferential direction are arranged on the surface of the annular blocking edge 11 and the end face of the connecting portion 21, and when the connecting portion 21 is fed in the thread direction and inserted into the hot-melt connecting body 1, the two anti-reverse ratchets 4 are buckled to form limiting along the reverse direction, the end face of the connecting portion 21 abuts. The anti-reverse ratchets 4 arranged at intervals along the circumferential direction are arranged on the surface of the annular retaining edge 11 and the end face of the connecting part 21, so that the end face of the connecting part 21 abuts against the first sealing ring 3 when the anti-reverse ratchets 4 are buckled and limited, the anti-reverse ratchets 4 have certain elasticity for the plastic part, and can be buckled and fastened only along the deformation of the inclined plane and not move back in the screwing process, so that the hot-melt connecting main body 1 and the threaded connecting main body 2 are locked into a whole and cannot be reversely rotated and loosened when being installed with an external part; in addition, the first sealing ring 3 has elasticity and can reversely push the connecting part 21, so that the reverse rotation preventing ratchet 4 rotates towards the locking direction, the reverse rotation preventing ratchet 4 is tightly buckled, the hot-melting connecting body 1 and the threaded connecting body 2 which are assembled with each other are prevented from loosening, a metal insert is omitted, and the production cost is reduced. Preferably, the end face of the connecting portion 21 is provided with a first annular boss 211 wound around the periphery of the anti-reverse ratchet 4, and when the two anti-reverse ratchets 4 are buckled and form a limit along the reverse direction, the first annular boss 211 can be inserted into the first sealing groove 12 and abut against the first sealing ring 3. The first annular boss 211 wound on the periphery of the anti-reverse ratchet 4 is arranged on the end face of the connecting portion 21, so that the first annular boss 211 can provide a certain protection effect for the anti-reverse ratchet 4 at the position and can avoid displacement of the first sealing ring 12 during installation, the first annular boss 211 is arranged to be inserted into the first sealing groove 12 and abut against the first sealing ring 3, and therefore labyrinth sealing can be further formed between the first annular boss 211 and the sealing groove after assembly, and the sealing effect of the connecting portion is strengthened. The other end face of the threaded connection main body 2 is provided with a third sealing groove 25 arranged around the port, a third sealing ring 6 is embedded in the third sealing groove 25, the other port of the threaded connection main body 2 is provided with a cylindrical adapter part 23, the third sealing groove 25 is arranged around the periphery of the adapter part 23, and the peripheral surface of the adapter part 23 is provided with a conical thread 24. Through another port setting at threaded connection main part 2 be the switching portion 23 of tube-shape, do benefit to like this and have the pipe fitting of internal thread and the other end cooperation of threaded connection main part 2, the outer peripheral face that further sets up switching portion 23 is conical thread 24, does benefit to like this and improves the assembly convenience under the condition of guaranteeing sealed effect. The outer peripheral surface of the threaded connection body 2 has a plurality of grooves 28 arranged at intervals in the circumferential direction. The grooves 28 prevent the tightening tool from slipping.

As shown in fig. 1 to 4, the end surface of the threaded connection body 2 facing the hot-melt connection body 1 is provided with a second sealing groove 22 extending along the circumferential direction and surrounding the periphery of the connection portion 21, a second sealing ring 5 is embedded in the second sealing groove 22, and when the connection portion 21 is screwed and inserted into the hot-melt connection body 1, the end surface of the hot-melt connection body 1 can abut against the second sealing ring 5. The end face of the threaded connecting body 2 facing the hot-melt connecting body 1 is provided with the second sealing groove 22 and the second sealing ring 5 in an embedded mode, so that the end face of the hot-melt connecting body 1 can abut against the second sealing ring 5 when the connecting part 21 is inserted into the hot-melt connecting body 1 in a threaded mode, the second sealing ring 5 can form sealing from the outer side, and the sealing effect of the joint of the hot-melt connecting body 1 and the threaded connecting body 2 is further guaranteed. The end face of the hot-melt connecting main body 1 is provided with a second annular boss 13, and when the connecting part 21 is screwed and inserted into the hot-melt connecting main body 1, the second annular boss 13 can be inserted into a second sealing groove 22 and abuts against a second sealing ring 5. The second annular boss 13 is arranged on the end face of the hot-melt connecting main body 1 and matched with the second sealing groove 22, so that a second labyrinth seal is further formed, and the sealing effect is enhanced.

Example two:

as shown in fig. 5-7, 10 and 11, the present embodiment is substantially the same as the first embodiment, except that: the inner edge of the other port of the threaded connection body 2 is provided with a conical thread 24, the inner root of the conical thread 24 is provided with an annular step part 26, the surface of the annular step part 26 facing one side of the connecting thread is provided with a sealing groove four 27 extending along the circumferential direction, and a sealing ring four 7 is embedded in the sealing groove four 27. The sealing groove III 25 is positioned at the edge of the other port of the threaded connection main body 2, so that the contact between the outer part and the sealing ring III 6 is ensured, the applicability is better, the conical thread 24 is arranged at the inner edge of the other port of the threaded connection main body 2, so that the assembly with a pipe fitting with an external thread is facilitated, and the assembly convenience is improved under the condition of ensuring the sealing effect, in addition, the annular step part 26 is arranged at the inner edge of the other port of the threaded connection main body 2, the sealing groove IV 27 and the sealing ring IV 7 are arranged on the outer side surface of the annular step part 26 in an embedded mode, so that in the matching process, if the thread section of the outer part is longer, the outer part can form abutting seal with the sealing ring IV 7 in the sealing groove IV 27 when being screwed, if the thread section is shorter, the outer part can abut seal with the sealing ring III 6 in, the traditional winding raw material belt sealing process is omitted, and the applicability is better.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a pipe joint, includes hot melt connecting body (1) and threaded connection main part (2), its characterized in that, a port of threaded connection main part (2) has connecting portion (21) that are the tube-shape, the inner edge of hot melt connecting body (1) has and keeps off along (11) along the annular of circumference extension, connecting portion (21) spiro union is inserted and is located in hot melt connecting body (1), annular keeps off and has along circumference extension's seal groove (12) on (11), seal groove (12) are embedded to be equipped with sealing washer (3), the annular keep off along (11) the surface with the terminal surface of connecting portion (21) all has along circumference interval arrangement prevent reverse ratchet (4), work as connecting portion (21) feed along the screw thread direction insert in hot melt connecting body (1) and make two prevent reverse ratchet (4) looks locks along reverse direction when forming spacing, the terminal surface of this connecting portion (21) with sealing washer (3) support to lean on closely with sealing washer (3) And (6) sealing.

2. The pipe joint according to claim 1, wherein the end face of the connecting portion 21 is provided with a first annular boss (211) wound around the periphery of the anti-reverse ratchet (4), and when two anti-reverse ratchets (4) are buckled and form a limit along the reverse direction, the first annular boss (211) can be inserted into the first sealing groove (12) and abuts against the first sealing ring (3).

3. The pipe joint according to claim 1 or 2, wherein the end surface of the threaded connecting body (2) facing the hot-melt connecting body (1) is provided with a second sealing groove (22) extending along the circumferential direction and surrounding the periphery of the connecting portion (21), a second sealing ring (5) is embedded in the second sealing groove (22), and when the connecting portion (21) is inserted in the hot-melt connecting body (1) in a threaded manner, the end surface of the hot-melt connecting body (1) can abut against the second sealing ring (5).

4. The pipe joint according to claim 3, wherein the end face of the hot melt connecting body (1) is provided with a second annular boss (13), and when the connecting part (21) is inserted into the hot melt connecting body in a threaded manner, the second annular boss (13) can be inserted into the second sealing groove (22) and abuts against the second sealing ring (5).

5. The pipe joint according to claim 1 or 2, wherein the other end surface of the threaded connection body (2) is provided with a third seal groove (25) arranged around the port, the third seal groove (25) is positioned at the edge of the port, and a third seal ring (6) is embedded in the third seal groove (25).

6. The pipe joint according to claim 1 or 2, wherein the other port of the threaded connection body (2) has a cylindrical adapter portion (23), and an outer peripheral surface of the adapter portion (23) has a conical thread (24).

7. The pipe joint according to claim 1 or 2, wherein the inner edge of the other port of the threaded connection body (2) is provided with a connection thread, the root of the connection thread is provided with an annular step part (26), the surface of the annular step part (26) facing the side of the connection thread is provided with a sealing groove four (27) extending along the circumferential direction, and a sealing ring four (7) is embedded in the sealing groove four (27).

8. A pipe-fitting according to claim 7, characterized in that the connecting thread is a conical thread (24).

9. A pipe joint according to claim 1 or 2, wherein said hot-melt connecting body (1) is a hot-melt plastic member and said threaded connecting body (2) is an engineering plastic member.

10. The pipe joint according to claim 1 or 2, wherein the outer circumferential surface of the connecting portion (21) is screw-engaged with the inner side wall of the port of the thermal fusion connecting body (1), and the outer circumferential surface of the threaded connecting body (2) has a plurality of grooves (28) arranged at intervals in the circumferential direction.