CN220354702U - End connection structure of plastic-lined pipe - Google Patents

Abstract

The utility model relates to a mould the pipe technology field of lining, and disclose an end connection structure of lining mould pipe, including lining mould the pipe fitting, lining mould the pipe fitting and include outer pipe fitting and inner tube spare, outer pipe fitting includes the outer tube, the one end of outer tube is provided with the screw thread end, the one end of keeping away from the screw thread end on the outer tube is provided with the guide slot, the one end of outer tube is provided with the butt joint end piece, the one end of keeping away from the butt joint end piece on the outer pipe fitting is provided with the sealing member, the sealing member is including setting up the sealed gasbag in the inner tube fitting, the outside of sealed gasbag is provided with the mark post; according to the sealing device, the characteristics of the sealing air bag are utilized, so that the sealing air bag is attached to the clearance between the inserting block and the inserting groove, the sealing air bag can be adapted to contact surfaces of different sizes and shapes, the sealing performance of the sealing air bag is guaranteed, the sealing can be adaptively adjusted and compensated when the internal or external pressure changes, and the stable sealing performance is kept.

Description

End connection structure of plastic-lined pipe

Technical Field

The application relates to the technical field of plastic lining pipes, in particular to an end connection structure of a plastic lining pipe.

Background

The plastic lining pipe is based on common carbon steel pipe and lined with thermoplastic plastic with excellent chemical property, and is formed through cold drawing compounding or rotational molding.

In the prior art, most plastic-lined pipes are connected by flange bolts or threaded connection, and the connection parts are generally connected by sealing rings and sealing adhesive tapes;

aiming at the related technology, the inventor believes that the sealing ring has higher rigidity and poorer adaptability to the size and shape, and the sealing is realized through point contact, so that the problem of leakage caused by uneven stress exists;

the above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

In order to solve the rigidity of sealing washer higher, the adaptability to size and shape is relatively poor, realizes sealing through the point contact, has the uneven problem that leaks that appears of atress, this application provides a plastic lining pipe's end connection structure.

The application provides an end connection structure of lining plastic pipe adopts following technical scheme:

the utility model provides an end connection structure of pipe is moulded to lining, is moulded including lining, lining is moulded the pipe fitting and is included outer pipe fitting and interior pipe fitting, the one end of outer pipe fitting is provided with the butt end spare, the one end of keeping away from the butt end spare on the outer pipe fitting is provided with the sealing member, the sealing member is including setting up the sealed gasbag in interior pipe fitting, the outside of sealed gasbag is provided with the mark post.

Preferably, the outer pipe comprises an outer sleeve, a threaded end is arranged at one end of the outer sleeve, and a guide groove is arranged at one end, far away from the threaded end, of the outer sleeve.

Preferably, the inner pipe comprises a lining pipe arranged on the inner side of the outer sleeve, a slot is arranged at one end of the lining pipe, an inserting block matched with the slot is arranged at one end, far away from the slot, of the lining pipe, and the sealing air bag is arranged on the inner side of the slot.

Preferably, the butt end piece comprises a connecting ring arranged on the threaded end, and a threaded ring matched with the threaded end is arranged on the connecting ring.

Preferably, the outside of sealed gasbag in the slot is provided with a plurality of extrusion piece, be provided with the arcwall face on the extrusion piece, the outside of sealed gasbag is provided with the mark post, the terminal of mark post passes outer pipe fitting, interior pipe fitting and with outer pipe fitting, interior pipe fitting sliding connection.

In summary, the present application includes the following beneficial technical effects:

1. through the matched use of the butt end piece and the sealing piece, the characteristics of the sealing air bag are utilized to enable the sealing air bag to be attached to the gap between the insert block and the slot, the sealing of the sealing air bag can adapt to contact surfaces with different sizes and shapes, the sealing performance of the sealing air bag is ensured, the sealing can be adjusted and compensated in a self-adaptive manner when the internal or external pressure changes, and the stable sealing performance is maintained;

2. through the cooperation of sealing member use, utilize screw thread ring extrusion briquetting for the inside atmospheric pressure of extrusion piece extrusion sealed gasbag guarantees sealed gasbag is sufficient, and it is ejecting with the mark post to appear in sealed gasbag, when sealed gasbag appears leaking, and the inside atmospheric pressure appears not enough, and the mark post drops the slot, conveniently inspects sealed gasbag and appears damaging.

Drawings

FIG. 1 is a schematic perspective view of a first perspective view of an embodiment of the application;

FIG. 2 is a schematic perspective view of a second perspective view of an embodiment of the application;

fig. 3 is a schematic perspective view of a third perspective view of an embodiment of the application.

Reference numerals illustrate: 1. lining plastic pipe fittings; 101. an outer tube; 1011. an outer sleeve; 1012. a threaded end; 1013. a guide groove; 102. an inner tube; 1021. an inner liner tube; 1022. a slot; 1023. inserting blocks; 2. abutting end pieces; 201. a connecting ring; 202. a threaded ring; 3. a seal; 301. sealing the air bag; 302. extruding a block; 303. and marking the column.

Detailed Description

This application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses an end connection structure of a plastic-lined pipe. Referring to fig. 1-3, an end connection structure of a plastic lining pipe comprises a plastic lining pipe fitting 1, wherein the plastic lining pipe fitting 1 comprises an outer pipe fitting 101 and an inner pipe fitting 102, a butt joint end fitting 2 is installed at one end of the outer pipe fitting 101, the butt joint end fitting 2 comprises a connecting ring 201 installed on a threaded end 1012, a threaded ring 202 matched with the threaded end 1012 is installed on the connecting ring 201, a sealing piece 3 is installed at one end, far away from the butt joint end fitting 2, of the outer pipe fitting 101, the sealing piece 3 comprises a sealing air bag 301 installed in the inner pipe fitting 102, and a marking column 303 is installed at the outer side of the sealing air bag 301;

by adopting the technical scheme, the characteristics of the sealing air bag 301 are utilized, so that the sealing air bag 301 is attached to the clearance between the insert block 1023 and the slot 1022, the sealing of the sealing air bag 301 can adapt to contact surfaces with different sizes and shapes, the tightness of the sealing air bag is ensured, the sealing can be adaptively adjusted and compensated when the internal or external pressure changes, and the stable sealing performance is maintained.

Referring to fig. 1, the outer pipe 101 includes an outer pipe 1011, one end of the outer pipe 1011 is provided with a threaded end 1012, one end of the outer pipe 1011 far away from the threaded end 1012 is provided with a guide slot 1013, the inner pipe 102 includes a lining pipe 1021 installed inside the outer pipe 1011, one end of the lining pipe 1021 is provided with a slot 1022, one end of the lining pipe 1021 far away from the slot 1022 is provided with an insert 1023 matched with the slot 1022, and the sealing airbag 301 is installed inside the slot 1022;

by adopting the technical scheme, the outer pipe fitting 101 is in threaded butt joint with the threaded ring 202, so that quick connection and disassembly are realized.

Referring to fig. 3, a plurality of squeeze blocks 302 are installed on the outer side of the sealing airbag 301 in the slots 1022, an arc surface is installed on the squeeze blocks 302, a marking column 303 is installed on the outer side of the sealing airbag 301, and the tail end of the marking column 303 passes through the outer pipe 101 and the inner pipe 102 and is in sliding connection with the outer pipe 101 and the inner pipe 102;

through adopting above-mentioned technical scheme, utilize screw thread ring 202 extrusion piece 302 for extrusion piece 302 extrudees sealed gasbag 301, guarantees that the inside atmospheric pressure of sealed gasbag 301 is sufficient, and it is ejecting with marking post 303 to appear in sealed gasbag 301, when sealed gasbag 301 appears leaking, the inside atmospheric pressure appears not enough, marking post 303 drops slot 1022, and whether the damage appears in convenient inspection sealed gasbag 301, 202 cut have the cambered surface with 302 looks adaptation.

The implementation principle of the end connection structure of the plastic-lined pipe in the embodiment of the application is as follows: when two lining plastic pipe fittings 1 are connected, align and peg graft with slot 1022 through inserted block 1023, twist go-between 201, screw up with the screw end 1012 screw butt joint through screwed ring 202, extrude extrusion piece 302 through screwed ring 202 and move down, extrusion piece 302 extrudees sealed gasbag 301, guarantee that the inside atmospheric pressure of sealed gasbag 301 is abundant, it is ejecting with marking post 303 through sealed gasbag 301, and make sealed gasbag 301 laminating inserted block 1023 and slot 1022 clearance, sealed gasbag 301 seals the contact surface that can adapt to different sizes and shapes, guarantee its leakproofness, seal can be adjusted and compensate in the self-adaptation when inside or outside pressure change, keep stable sealing performance, when sealed gasbag 301 appears leaking, sealed gasbag 301 inside atmospheric pressure insufficient shrink appears, marking post 303 drops into slot 1022 in, the staff can judge fast that sealed gasbag 301's leakproofness appears damaging, and then maintain and change.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (5)

1. The utility model provides an end connection structure of lining plastic pipe, includes lining plastic pipe fitting (1), its characterized in that: the plastic lining pipe fitting (1) comprises an outer pipe fitting (101) and an inner pipe fitting (102), wherein a butt joint end piece (2) is arranged at one end of the outer pipe fitting (101), a sealing piece (3) is arranged at one end, far away from the butt joint end piece (2), of the outer pipe fitting (101), the sealing piece (3) comprises a sealing air bag (301) arranged in the inner pipe fitting (102), and a marking column (303) is arranged at the outer side of the sealing air bag (301).

2. An end connection structure of a plastic lined pipe according to claim 1, wherein: the outer pipe fitting (101) comprises an outer sleeve (1011), a threaded end (1012) is arranged at one end of the outer sleeve (1011), and a guide groove (1013) is arranged at one end, far away from the threaded end (1012), of the outer sleeve (1011).

3. An end connection structure of a plastic lined pipe according to claim 2, wherein: the inner pipe (102) comprises a lining pipe (1021) arranged on the inner side of the outer sleeve (1011), a slot (1022) is formed in one end of the lining pipe (1021), an inserting block (1023) matched with the slot (1022) is arranged at one end, far away from the slot (1022), of the lining pipe (1021), and the sealing air bag (301) is arranged on the inner side of the slot (1022).

4. A plastic lined pipe end connection structure according to claim 3, wherein: the butt end piece (2) comprises a connecting ring (201) arranged on a threaded end (1012), and a threaded ring (202) matched with the threaded end (1012) is arranged on the connecting ring (201).

5. The end connection structure of a plastic lined pipe according to claim 4, wherein: the outer side of sealed gasbag (301) in slot (1022) is provided with a plurality of extrusion piece (302), be provided with the arcwall face on extrusion piece (302), the outside of sealed gasbag (301) is provided with mark post (303), the end of mark post (303) passes outer pipe fitting (101), interior pipe fitting (102) and with outer pipe fitting (101), interior pipe fitting (102) sliding connection.