CN212338463U

CN212338463U - Net sleeve PTFE hose

Info

Publication number: CN212338463U
Application number: CN202020928039.0U
Authority: CN
Inventors: 邰在进; 徐立祥; 韦德根
Original assignee: Nanjing Fuyuan Chemical Pipeline Equipment Co ltd
Current assignee: Nanjing Fuyuan Chemical Pipeline Equipment Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-12
Anticipated expiration: 2030-05-27

Abstract

The utility model relates to the field of water supply and drainage pipelines, in particular to a net sleeve PTFE hose, which comprises a pipe body, a flange and a PTFE lining, wherein the pipe body comprises a net sleeve and a PTFE hose arranged in the net sleeve; one end of the flange, facing the pipe body, extends out of a connecting part, and the connecting part is used for connecting the pipe body; the tetrafluoro inner lining is arranged on the inner wall of the connecting part of the flange and extends to the flange surface of the flange, and the tetrafluoro inner lining and the flange are integrally molded. The embodiment solves the technical problems that the finished product rate of the metal mesh sleeve PTFE hose is low, the finished PTFE flanging sealing surface is uneven, and a PTFE anticorrosive coating is easy to bulge and fall off in the use process due to the flanging process.

Description

Net sleeve PTFE hose

Technical Field

The utility model relates to a water supply and drainage pipeline field specifically is a net cover tetrafluoro hose.

Background

With the rapid development of economy in China, various requirements such as efficient pipeline construction, flexible piping modes, solving of various deflection of the pipeline, solving of expansion with heat and contraction with cold of the pipeline, solving of corrosion of the pipeline and the like are continuously improved. Therefore, various pipeline element manufacturers continuously increase the scientific research investment, and products suitable for connecting various pipelines are continuously innovated and developed. However, the anticorrosive hose has no new product, the anticorrosive hose in the prior art still adopts the metal mesh polytetrafluoroethylene hose of the flanging process, the main body of the pipeline is the metal corrugated pipe, the metal corrugated pipe is sleeved with the plain-weave metal protection net, flanges are welded at two ends of the pipeline, and finally, a polytetrafluoroethylene anticorrosive coating is heated and attached in the pipeline, and the polytetrafluoroethylene anticorrosive coating is attached to the connecting end of the flange from the inside of the pipeline and forms a flanging.

The metal mesh polytetrafluoroethylene hose has the following problems in actual production and use:

1. the metal net sleeve PTFE hose is a PTFE sealing surface manufactured by adopting a flanging process, the process is to heat and then flange a PTFE material, the PTFE material has a stretching phenomenon in the heating process, cracks are easy to appear, a PTFE layer attached inside a pipeline is cracked, and the PTFE flange sealing surface falls off, so that the yield is influenced;

2. the metal net sleeve tetrafluoro hose is a tetrafluoro lining process which is integrally carried out, namely tetrafluoro lining processes of a pipeline and a flange sealing surface are carried out together, and tetrafluoro lining processes of two parts cannot be separated in the process, so that the tetrafluoro flange sealing surface of a product after tetrafluoro lining is low in flatness;

3. when the metal mesh sleeve PTFE hose manufactured by the flanging process is used, the phenomena of bulging and falling of the laminating surface of the PTFE layer are easy to occur, particularly, the PTFE layer at the pipe opening, namely the flanging folding angle has the tendency of bulging and falling when being subjected to bending stress in the process of flanging and lining PTFE, and the bulged and fallen PTFE layer is liable to be damaged to influence the sealing effect of the whole pipeline, so that the occurrence of production accidents is finally caused.

Disclosure of Invention

In order to solve the metal mesh tetrafluoro hose among the prior art because the yield that adopts the turn-ups technology to cause is low, the sealed face unevenness of finished product tetrafluoro turn-ups, the easy technical problem that bloies, drops of tetrafluoro anticorrosive coating in the use, the utility model provides a mesh tetrafluoro hose has solved above-mentioned technical problem.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a net cover tetrafluoro hose, a serial communication port, include: the hose comprises a hose body and a hose body, wherein the hose body comprises a net sleeve and a polytetrafluoroethylene hose arranged in the net sleeve; the flange extends out of a connecting part towards one end of the pipe body, and the connecting part is used for connecting the pipe body; the tetrafluoro inner lining is arranged on the inner wall of the connecting part of the flange and extends to the flange surface of the flange, and the tetrafluoro inner lining and the flange are integrally molded.

The utility model discloses a net cover tetrafluoro hose, what body part adopted is that the tetrafluoro hose adds the metal mesh, flange part's anticorrosive injection moulding technology is then adopted and is moulded plastics tetrafluoro inside lining and flange as an organic whole, then with body and flange joint, it is low owing to the yield that adopts the turn-ups technology to cause to have avoidd, the tetrafluoro anticorrosive coating easily bloated in the use, the technical problem who drops, and simultaneously, in the injection moulding technology, the tetrafluoro inside lining sealing surface roughness on the flange face also can be controlled, the technical problem of the sealed unevenness of tetrafluoro turn-ups because turn-ups technology brought has been overcome.

Further, the connecting part is connected with the pipe body in a buckling and pressing mode through a movable sleeve.

Further, the inner wall of movable sleeve is formed with the arch, the outer wall of the connecting portion of flange be formed with protruding complex barb, the body orientation the one end pressfitting of flange in between movable sleeve and the connecting portion and through arch and barb form and compress tightly fixedly.

Further, the tetrafluoro inner liner extends to the outer wall of the connecting part towards one end of the pipe body.

Further, the part of the tetrafluoro inner lining between the movable sleeve and the connecting part is also formed with a barb structure.

Furthermore, a positioning structure is arranged on the connecting part to limit and fix the flange.

Further, the positioning structure comprises a positioning groove arranged on the connecting part and a positioning ring arranged on the movable sleeve.

Furthermore, an injection molding groove is formed in the flange surface, so that the polytetrafluoroethylene lining after injection molding does not protrude out of the flange surface of the flange.

Further, a protective layer is arranged between the net sleeve and the polytetrafluoroethylene hose to protect the polytetrafluoroethylene hose.

Further, the protective layer is a PE heat-shrinkable film attached to the PTFE hose.

Based on the structure, the utility model discloses the technological effect that can realize does:

1. the utility model discloses a net cover tetrafluoro hose, body part adopt the tetrafluoro hose add the metal net cover, flange part's anticorrosive then adopts the injection moulding technology to mould plastics tetrafluoro inside lining and flange as an organic whole, then with body and flange connection, avoided because the yield that adopts the turn-ups technology to cause is low, the easy technical problem that drum, drop of tetrafluoro anticorrosive coating in the use, simultaneously, in the injection moulding technology, the tetrafluoro inside lining sealing surface roughness on the flange face also can be controlled, overcome the technical problem because the tetrafluoro turn-ups sealing surface unevenness that turn-ups technology brought;

2. the utility model discloses a net cover tetrafluoro hose, the connecting portion of flange withhold with the help of movable sleeve and body and press and be connected, the inner wall of movable sleeve is formed with a plurality of archs, the outer wall of the connecting portion of flange is formed with a plurality of barbs with protruding complex, form multichannel annular seal structure, compress tightly firmly the body and seal and fix between movable sleeve and connecting portion, avoided body and flange to influence sealed effect because of the insecure connection to lead to the technical problem that intraductal solution easily leaks;

3. the utility model discloses a net cover tetrafluoro hose is provided with the protective layer between net cover and tetrafluoro hose, has solved because the friction of net cover and tetrafluoro hose leads to the fragile technical problem of tetrafluoro hose in removal or use.

4. The utility model discloses a net cover tetrafluoro hose has seted up the groove of moulding plastics on the flange face, and the tetrafluoro inside lining can mould plastics in the groove of moulding plastics, makes the tetrafluoro inside lining after moulding plastics and flange in the coplanar, both can improve the firmness of tetrafluoro inside lining on the flange face, has solved again in the transportation because the flange face falls to the ground and causes the destroyed technical problem of tetrafluoro inside lining.

Drawings

Fig. 1 is a schematic view of the overall structure of the net polytetrafluoroethylene hose of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Wherein: 1-pipe body, 11-net sleeve, 12-tetrafluoro hose and 121-protective layer; 2-flange, 21-connecting part, 211-barb, 212-outer wall, 213-positioning groove, 22-tetrafluoro lining and 23-injection molding groove; 3-movable sleeve, 31-bulge, 32-positioning ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1-2, the present embodiment provides a net sleeve tetrafluoro hose, which includes a pipe body 1, a flange 2 and a tetrafluoro liner 22, wherein the pipe body 1 includes a net sleeve 11 and a tetrafluoro hose 12 embedded in the net sleeve 11, the flange 2 extends toward one end of the pipe body 1 and is formed with a connecting portion 21, the connecting portion 21 is used for connecting the pipe body 1, the tetrafluoro liner 22 is disposed on an inner wall of the connecting portion 21 of the flange 2 and extends to a flange surface of the flange 2, and the tetrafluoro liner 22 and the flange 2 are molded as a whole.

In the net-sleeve tetrafluoro hose in the embodiment, the body 1 is made of the tetrafluoro hose 12 and the metal net 11, the flange 2 is made of corrosion-resistant material by injection molding to integrate the tetrafluoro lining 22 with the flange 2, and then the body 1 is connected with the flange 2, so that the tetrafluoro hose 12 does not need to extend to the end face of the flange 2, and the tetrafluoro hose 12 does not need to be fixed to the end face of the flange 2 by flanging, and further the stress on the bent portion of the tetrafluoro hose 12 does not exist, thereby avoiding the technical problems of bulging and falling off easily caused by the flanging process, greatly prolonging the service life of the net-sleeve tetrafluoro hose, and in addition, the flanging process is to heat the tetrafluoro material and then carry out flanging, the tetrafluoro material has a stretching phenomenon in the heating process, cracks are easily generated, the tetrafluoro layer attached inside the pipeline cracks, and the flanging sealing surface of the tetrafluoro falls off, in the embodiment, the injection molding process replaces the flanging process, the injection molding process is to integrally inject the tetrafluoro lining 22 and the flange 2 by using a mold, the overall strength is high, and the yield is higher. Meanwhile, in the injection molding process, the flatness of the sealing surface of the tetrafluoro lining 22 on the flange surface can be controlled, and the technical problem of uneven tetrafluoro flanging sealing surface caused by the flanging process is solved.

Furthermore, the flange surface can be provided with an injection molding groove 23 so that the tetrafluoro lining 22 after injection molding does not protrude from the flange surface of the flange 2, thereby not only improving the firmness of the tetrafluoro lining 22 on the flange surface, but also reducing the probability that the tetrafluoro lining 22 is damaged because the flange surface falls to the ground in the transportation process.

According to the utility model discloses an embodiment, body 1 adopts the combination that net cover 11 adds tetrafluoro hose 12, and thereby tetrafluoro hose 12 is by tetrafluoro raw materials injection moulding, thereby avoids using the technology of metal pipe inside lining tetrafluoro to solve the easy technical problem that blooms, drops of tetrafluoro anticorrosive coating. Meanwhile, in order to prevent the damage of the tetrafluoro hose 12 by the net 11, a protective layer 121 is further provided between the net 11 and the tetrafluoro hose 12 to protect the tetrafluoro hose 12, and the protective layer 121 is preferably a PE thermoplastic film and attached to the tetrafluoro hose 12 on the side close to the net 11.

According to the utility model discloses an embodiment, flange 2 extends connecting portion 21 towards the one end of body 1, and connecting portion 21 is used for connecting body 1. Specifically, connecting portion 21 can be on body 1 through the steel wire winding, also can be through buckle joint on body 1, and in this embodiment, connecting portion 21 is preferably withheld with body 1 with the help of movable sleeve 3 and is connected in order to improve the fastness of connection. It is noted that the flange 2 and the movable sleeve 3 may alternatively be made of a metallic material, preferably 304 stainless steel in this embodiment.

In order to further improve the connection fastness, the inner wall of the movable sleeve 3 is formed with a protrusion 31, the outer wall 212 of the connecting part 21 of the flange 2 is formed with a barb 211 matched with the protrusion 31, and one end of the pipe body 1 facing the flange 2 is pressed and fixed between the movable sleeve 3 and the connecting part 21. Specifically, the net 11 is attached to the inner wall of the protrusion 31 formed on the movable sleeve 3, the tetrafluoro hose 12 is attached to the outer wall 212 of the connecting portion 21 with the barb 211, and a plurality of annular sealing structures are formed at the connecting portion of the flange 2 and the pipe body 1, so that a sealing effect is formed when the flange 2 is firmly connected with the pipe body 1.

In order to further improve the sealing effect, the end of the tetrafluoro liner 22 facing the pipe body 1 extends to the outer wall 212 of the connecting portion 21, and the tetrafluoro liner 22 on the outer wall 212 is attached to the tetrafluoro hose 12 to function as a sealing gasket. Meanwhile, the tetrafluoro material of the tetrafluoro liner 22 is softer than the metal material of the flange 2, and the tetrafluoro hose 12 is less likely to be damaged by the adhesion of the tetrafluoro liner 22 to the tetrafluoro hose 12. Further, the portion of the tetrafluoro liner 22 between the mantle 3 and the connection portion 21 is also formed with a barb 211 structure to improve the sealing effect.

In order to better fix the connection between the flange 2 and the pipeline, a positioning structure is arranged on the connecting portion 21 of the flange 2 to limit and fix the flange 2. In this embodiment, the positioning structure comprises a positioning groove 213 disposed on the connecting portion 21 and a positioning ring 32 disposed on the movable sleeve 3, and the positioning groove 213 cooperates with the positioning ring 32 to better fix the flange 2 on the pipeline. Specifically, when the positioning ring 32 is inserted into the positioning groove 213, the positioning groove 213 limits the positioning ring 32, and the flange 2 is fixed on the pipeline.

Based on above-mentioned structure, the utility model discloses a net cover tetrafluoro hose, what body 1 part adopted is that tetrafluoro hose 12 adds the structure of

metal mesh

11, 2 partial anticorrosive injection moulding process of then adopting of flange is as an organic whole with tetrafluoro inside lining 22 and flange 2 injection moulding, then be connected body 1 and flange 2, the yield of having avoided leading to the fact owing to adopting the turn-ups technology is low, the tetrafluoro anticorrosive coating easily blooms in the use, the technical problem who drops, and simultaneously, in the injection moulding process, the 22 roughness of tetrafluoro inside lining on the flange face also can be controlled, the technical problem of the sealed face unevenness of tetrafluoro turn-ups because turn-ups technology brings has been overcome.

It should be understood that the above description of the specific embodiments is only for the purpose of explanation and not for the purpose of limitation. Obvious changes or variations caused by the spirit of the present invention are within the scope of the present invention.

Claims

1. A net polytetrafluoroethylene hose characterized by comprising:

the pipe comprises a pipe body (1), wherein the pipe body (1) comprises a net sleeve (11) and a tetrafluoro hose (12) arranged in the net sleeve (11);

the flange (2), one end of the flange (2) facing the pipe body (1) extends out of a connecting part (21), and the connecting part (21) is used for connecting the pipe body (1);

the polytetrafluoroethylene inner liner (22) is arranged on the inner wall of the connecting part (21) of the flange (2) and extends to the flange surface of the flange (2), and the polytetrafluoroethylene inner liner (22) and the flange (2) are integrally molded.

2. The tetrafluoro-hose according to claim 1, characterized in that the connection portion (21) is press-fitted to the pipe body (1) by means of a movable sleeve (3).

3. The net tetrafluoro hose according to claim 2, characterized in that the inner wall of the movable sleeve (3) is formed with a protrusion (31), the outer wall (212) of the connecting portion (21) of the flange (2) is formed with a barb (211) fitting with the protrusion (31), and one end of the pipe body (1) facing the flange (2) is pressed between the movable sleeve (3) and the connecting portion (21) and is formed to be pressed and fixed by the protrusion (31) and the barb (211).

4. The reticulated tetrafluoro hose according to claim 3, characterized in that the tetrafluoro inner liner (22) extends toward one end of the tubular body (1) onto the outer wall (212) of the connecting portion (21).

5. The tennis tetrafluoro hose according to claim 4, characterized in that the portion of the tetrafluoro liner (22) between the movable sheath (3) and the connecting portion (21) is also formed with a barb (211) structure.

6. The net sleeve tetrafluoro hose according to claim 2, characterized in that a positioning structure is provided on the connecting portion (21) to position and fix the flange (2).

7. The tetrafluoro hose of net cover according to claim 6, characterized in that the positioning structure comprises a positioning groove (213) provided on the connecting portion (21) and a positioning ring (32) provided on the movable sleeve (3).

8. The net-cover tetrafluoro hose according to claim 1, characterized in that the flange face is provided with an injection molding groove (23) so that the tetrafluoro liner (22) after injection molding does not protrude from the flange face of the flange (2).

9. The net-covered tetrafluoro hose according to any one of claims 1 to 8, characterized in that a protective layer (121) is provided between the net cover (11) and the tetrafluoro hose (12) to protect the tetrafluoro hose (12).

10. The tetrafluoro-hose net according to claim 9, characterized in that the protective layer (121) is a PE heat shrink film applied on the tetrafluoro-hose (12).