CN212004475U - Reducing for polyethylene valve and polyethylene valve - Google Patents
Reducing for polyethylene valve and polyethylene valve Download PDFInfo
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- CN212004475U CN212004475U CN202020201979.XU CN202020201979U CN212004475U CN 212004475 U CN212004475 U CN 212004475U CN 202020201979 U CN202020201979 U CN 202020201979U CN 212004475 U CN212004475 U CN 212004475U
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- pipe section
- cylindrical pipe
- reducing
- polyethylene valve
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Abstract
The application discloses reducing and polyethylene valve for polyethylene valve relates to polyethylene pipeline field. The reducing device comprises a small-end cylindrical pipe section and a large-end cylindrical pipe section which are changed in a step shape and are hollow inside. The large-end cylindrical pipe section is divided into an inner cylindrical pipe section and an outer cylindrical pipe section through a groove in the end face of the large-end cylindrical pipe section. The inner cylindrical pipe section and the outer cylindrical pipe section are respectively provided with a V-shaped groove and an outer cylindrical clamping groove. Through the structure, can be so that the terminal fixture card of hot melt welding machine is fixed in tip cylinder pipe section department, the fixture card of hot melt welding machine main aspects is fixed in the outer cylinder draw-in groove department of the outer cylinder pipeline section of main aspects cylinder pipeline section, thereby can make welding pressure direct action in face of weld department, the terminal surface department of outer cylinder pipeline section promptly, and then reduce the loss in the conduction process, keep the uniformity of whole face of weld atress, make face of weld department turn-up full unanimous among the welding process, help the improvement of polyethylene valve seam welding quality. Thereby being beneficial to the popularization and the application of the polyethylene valve.
Description
Technical Field
The application relates to a plastic pipe fitting, in particular to a reducing valve for a polyethylene valve and the polyethylene valve.
Background
At present, buried polyethylene (abbreviated as PE) pipelines are mostly adopted in gas pipe networks, and a polyethylene valve is usually used in the PE pipelines to control the gas flow of the pipelines. However, due to the flammable and explosive characteristics of fuel gas, the welding quality of the polyethylene valve is required to be the same as that of the polyethylene pipeline, and even higher than that of the polyethylene pipeline.
In the actual welding process, the problem of uneven stress exists on the whole welding surface, so that the edge curling is uneven, and even the welding failure of the polyethylene valve can be caused.
SUMMERY OF THE UTILITY MODEL
It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.
According to an aspect of the present application, there is provided a reducing for a polyethylene valve for hot melt butt connection with the polyethylene valve, the reducing comprising: stepped and hollow
The small-end cylindrical pipe section is used for clamping and fixing a fixture at the tail end of the hot melting welder on the outer surface of the small-end cylindrical pipe section; and
the end face of the large-end cylindrical pipe section is provided with a groove for mounting a support, the large-end cylindrical pipe section is divided into an inner cylindrical pipe section and an outer cylindrical pipe section by the groove, an annular V-shaped groove is formed in the end face of the inner cylindrical pipe section and used for mounting a sealing ring, the end face of the outer cylindrical pipe section is used as a welding face and is used for being in contact with the end portion of the polyethylene valve, and an outer cylindrical clamping groove is formed in the outer surface of the outer cylindrical pipe section in the circumferential direction and used for clamping and fixing a clamping device of the large end of the hot-melting welding machine on the outer surface of.
Optionally, the end surface of the inner cylindrical tube section is higher than the end surface of the outer cylindrical tube section.
Optionally, the edges of the small end cylindrical tube section are chamfered.
Optionally, the edges of the inner cylindrical tube section are chamfered.
Optionally, the reducing is injection molded and machined.
According to another aspect of the application, a polyethylene valve is provided, including the polyethylene valve body, still include sealing washer, support and be used for the reducing of polyethylene valve, the sealing washer the support reaches the quantity of reducing is two and one-to-one, and each reducing all with polyethylene valve hot melt butt joint, each reducing includes: stepped and hollow
The small-end cylindrical pipe section is used for clamping and fixing a fixture at the tail end of the hot melting welder on the outer surface of the small-end cylindrical pipe section; and
the end face of the large-end cylindrical pipe section is provided with a groove for mounting a corresponding support, the large-end cylindrical pipe section is divided into an inner cylindrical pipe section and an outer cylindrical pipe section by the groove, an annular V-shaped groove is formed in the end face of the inner cylindrical pipe section and used for mounting a corresponding sealing ring, the end face of the outer cylindrical pipe section is used as a welding face and is used for being in contact with the end portion of the polyethylene valve, and an outer cylindrical clamping groove is formed in the outer surface of the outer cylindrical pipe section in the circumferential direction and used for clamping and fixing a fixture of the large end of the hot-melting welding machine on the outer surface of the outer cylindrical.
Optionally, the end surface of the inner cylindrical tube section is higher than the end surface of the outer cylindrical tube section.
Optionally, the edges of the small end cylindrical tube section are chamfered.
Optionally, the edges of the inner cylindrical tube section are chamfered.
Optionally, the reducing is injection molded and machined.
The utility model provides a reducing and polyethylene valve for polyethylene valve, the reducing includes tip cylinder pipeline section and main aspects cylinder pipeline section, can make the terminal fixture card of hot melt welding machine solid in tip cylinder pipeline section department, the fixture card of hot melt welding machine main aspects fixes in the outer cylinder draw-in groove department of the outer cylinder pipeline section of main aspects cylinder pipeline section, thereby can make welding pressure direct action in face of weld department, the terminal surface department of outer cylinder pipeline section promptly, and then reduce the loss among the conduction process, keep the uniformity of whole face of weld atress, make face of weld department turn-up full unanimous among the welding process, help the improvement of polyethylene valve seam welding quality. Thereby being beneficial to the popularization and the application of the polyethylene valve.
The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic cross-sectional view of a reducing for a polyethylene valve according to one embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a polyethylene valve according to another embodiment of the present application.
The symbols in the drawings represent the following:
10 a polyethylene valve body, wherein the polyethylene valve body,
the diameter of the pipe is changed by 20 degrees,
21 small end cylindrical pipe section, 22 chamfer, 23 inner cylindrical pipe section, 24V-shaped groove, 25 end surface of outer cylindrical pipe section, 26 outer cylindrical pipe section, 27 outer cylindrical clamping groove, 28 large end cylindrical pipe section, 29 groove,
30 of the sealing ring, and the sealing ring,
40, a bracket.
Detailed Description
FIG. 1 is a schematic cross-sectional view of a reducing for a polyethylene valve according to one embodiment of the present application. Fig. 2 is a schematic cross-sectional view of a polyethylene valve according to another embodiment of the present application. As shown in fig. 1, referring to fig. 2, in order to solve the problems of uneven force transmission and inconsistent stress on the welding surface of the existing polyethylene valve, the embodiment provides a reducing unit 20 for a polyethylene valve, for hot-melt butt-joint connection with the polyethylene valve, the reducing unit 20 includes: a small end cylindrical pipe section 21 and a large end cylindrical pipe section 28 which are changed in a step shape and are hollow inside. The small-ended cylindrical pipe section 21 is used to clamp a jig at the end of the thermal fusion welding machine at the outer surface thereof. The large end cylindrical tube section 28 has a recess 29 at its end face for mounting a bracket 40 (see fig. 2). The groove 29 divides the large end cylindrical tube section 28 into an inner cylindrical tube section 23 and an outer cylindrical tube section 26. The end face of the inner cylindrical pipe section 23 is provided with an annular V-shaped groove 24 for installing a sealing ring 30 (see fig. 2) to ensure the sealing performance of the polyethylene valve. The end face 25 of the outer cylindrical pipe section serves as a welding surface for contact with the end of the polyethylene valve. The outer surface of the outer cylindrical pipe section 26 is provided with an outer cylindrical clamping groove 27 along the circumferential direction, and the outer cylindrical clamping groove is used for clamping and fixing a clamping apparatus at the large end of the hot-melting welding machine on the outer surface of the outer cylindrical pipe section.
The utility model provides a reducing 20 for polyethylene valve includes tip cylinder pipe section 21 and main aspects cylinder pipe section 28, can make the terminal fixture card of hot melt welding machine fix in tip cylinder pipe section 21 department, the fixture card of hot melt welding machine main aspects fixes in the outer cylinder draw-in groove 27 department of the outer cylinder pipe section 26 of main aspects cylinder pipe section 28, thereby can make welding pressure directly act on face of weld department, the terminal surface 25 department of outer cylinder pipe section promptly, and then reduce the loss in the conduction process, keep the uniformity of whole face of weld atress, make face of weld department turn-up full unanimous among the welding process, help the improvement of polyethylene valve seam allowance quality. Thereby being beneficial to the popularization and the application of the polyethylene valve.
Further, as shown in fig. 1, the end surface of the inner cylindrical pipe section 23 is higher than the end surface 25 of the outer cylindrical pipe section, which facilitates the sealing of the polyethylene valve with the reducing pipe 20 and the installation of the bracket 40.
Further, as shown in fig. 1, the edge of the small end cylindrical tube section 21 is chamfered 22.
Further, as shown in fig. 1, the edges of the inner cylindrical tube section 23 are chamfered 22.
Further, as shown in fig. 1, the reducing pipe 20 is injection molded and machined to ensure ovality of the flat pipe of the end face of the reducing pipe 20 and uniformity of wall thickness.
In specific implementation, as shown in fig. 1, the outer circle, part of the inner hole and the chamfer 22 of the small-end cylindrical pipe section 21 are all finished by turning and secondary processing. And the groove 29 of the large-end cylindrical pipe section 28, the inner cylindrical pipe section 23, the outer cylindrical pipe section 26, the V-shaped groove 24 and the outer cylindrical clamping groove 27 are machined twice by turning.
As shown in fig. 2, the present embodiment further provides a polyethylene valve, which includes a polyethylene valve body 10, a sealing ring 30, a support 40, and a reducing ring 20 for the polyethylene valve. The number of the seal rings 30, the support 40 and the reducing holes 20 is two and corresponds to one another. As shown in fig. 1, each diameter-variable 20 is connected to the polyethylene valve by hot-melting, and each diameter-variable 20 includes: a small end cylindrical pipe section 21 and a large end cylindrical pipe section 28 which are changed in a step shape and are hollow inside. The small-ended cylindrical pipe section 21 is used to clamp a jig at the end of the thermal fusion welding machine at the outer surface thereof. The large end cylindrical tube section 28 has a recess 29 at its end face for mounting a bracket 40. The groove 29 divides the large end cylindrical tube section 28 into an inner cylindrical tube section 23 and an outer cylindrical tube section 26. The end face of the inner cylindrical pipe section 23 is provided with an annular V-shaped groove 24 for installing a sealing ring 30 so as to ensure the sealing performance of the polyethylene valve. The end face 25 of the outer cylindrical pipe section serves as a welding surface for contact with the end of the polyethylene valve. The outer surface of the outer cylindrical pipe section 26 is provided with an outer cylindrical clamping groove 27 along the circumferential direction, and the outer cylindrical clamping groove is used for clamping and fixing a clamping apparatus at the large end of the hot-melting welding machine on the outer surface of the outer cylindrical pipe section.
The polyethylene valve of the application is added with the reducing 20, the sealing ring 30 and the support 40 on the basis of the polyethylene valve body 10 (namely the existing polyethylene valve). Wherein, reducing 20 includes tip cylinder pipe section 21 and main aspects cylinder pipe section 28, can make the terminal fixture card of hot melt welding machine fix in tip cylinder pipe section 21 department, the fixture card of hot melt welding machine main aspects fixes in the outer cylinder draw-in groove 27 department of the outer cylinder pipe section 26 of main aspects cylinder pipe section 28, thereby can make welding pressure directly act on face of weld department, the terminal surface 25 department of outer cylinder pipe section promptly, and then reduce the loss in the conduction process, keep the uniformity of whole face of weld atress, make face of weld department turn-up full unanimous in the welding process, help the improvement of polyethylene valve seam welding quality. Thereby being beneficial to the popularization and the application of the polyethylene valve.
Further, as shown in fig. 1, the end surface of the inner cylindrical pipe section 23 is higher than the end surface 25 of the outer cylindrical pipe section, which facilitates the sealing of the polyethylene valve with the reducing pipe 20 and the installation of the bracket 40.
Further, as shown in fig. 1, the edge of the small end cylindrical tube section 21 is chamfered 22.
Further, as shown in fig. 1, the edges of the inner cylindrical tube section 23 are chamfered 22.
Further, as shown in fig. 1, the reducing pipe 20 is injection molded and machined to ensure ovality of the flat pipe of the end face of the reducing pipe 20 and uniformity of wall thickness.
In specific implementation, as shown in fig. 1, the outer circle, part of the inner hole and the chamfer 22 of the small-end cylindrical pipe section 21 are all finished by turning and secondary processing. And the groove 29 of the large-end cylindrical pipe section 28, the inner cylindrical pipe section 23, the outer cylindrical pipe section 26, the V-shaped groove 24 and the outer cylindrical clamping groove 27 are machined twice by turning.
The reducing valve 20 and the polyethylene valve in this embodiment are made of polyethylene. Of course, in other embodiments, plastic materials such as nylon and polypropylene may also be used.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection or hot melting connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A reducing for a polyethylene valve for hot melt butt connection with the polyethylene valve, wherein the reducing (20) comprises: stepped and hollow
A small-end cylindrical pipe section (21) for clamping and fixing a fixture at the tail end of the thermal fusion welding machine on the outer surface of the small-end cylindrical pipe section; and
the end face of the large-end cylindrical pipe section (28) is provided with a groove (29) for installing a support (40), the large-end cylindrical pipe section (28) is divided into an inner cylindrical pipe section (23) and an outer cylindrical pipe section (26) by the groove (29), the end face of the inner cylindrical pipe section (23) is provided with an annular V-shaped groove (24) for installing a sealing ring (30), the end face (25) of the outer cylindrical pipe section is used as a welding face and is used for being in contact with the end portion of the polyethylene valve, and the outer surface of the outer cylindrical pipe section (26) is provided with an outer cylindrical clamping groove (27) along the circumferential direction of the outer surface and is used for fixing a clamping fixture of the large end of a hot-melting welding machine.
2. Reducing according to claim 1, characterized in that the end surface of the inner cylindrical pipe section (23) is higher than the end surface (25) of the outer cylindrical pipe section.
3. Diameter variation according to claim 1, wherein the edges of the small end cylindrical pipe section (21) are chamfered (22).
4. Reducing according to claim 1, wherein the edges of the inner cylindrical tube section (23) are chamfered (22).
5. Reducing according to any of claims 1-4, wherein the reducing is injection moulded and machined.
6. The utility model provides a polyethylene valve, includes polyethylene valve body, its characterized in that still includes sealing washer (30), support (40) and is used for reducing (20) of polyethylene valve, sealing washer (30) support (40) and the quantity of reducing (20) is two and one-to-one, and each reducing (20) all with polyethylene valve hot melt butt joint, each reducing (20) include: stepped and hollow
A small-end cylindrical pipe section (21) for clamping and fixing a fixture at the tail end of the thermal fusion welding machine on the outer surface of the small-end cylindrical pipe section; and
the end face of the large-end cylindrical pipe section (28) is provided with a groove (29) for installing a corresponding support (40), the large-end cylindrical pipe section (28) is divided into an inner cylindrical pipe section (23) and an outer cylindrical pipe section (26) by the groove (29), the end face of the inner cylindrical pipe section (23) is provided with an annular V-shaped groove (24) for installing a corresponding sealing ring (30), the end face (25) of the outer cylindrical pipe section is used as a welding face to be in contact with the end portion of the polyethylene valve, and the outer surface of the outer cylindrical pipe section (26) is provided with an outer cylindrical clamping groove (27) in the circumferential direction and used for clamping a fixture at the large end of a hot-melting welding machine on the outer surface of the outer cylindrical pipe section.
7. Polyethylene valve according to claim 6, characterized in that the end surface of the inner cylindrical pipe section (23) is higher than the end surface (25) of the outer cylindrical pipe section.
8. Polyethylene valve according to claim 6, wherein the edges of the small end cylindrical pipe section (21) are chamfered (22).
9. Polyethylene valve according to claim 6, wherein the inner cylindrical pipe section (23) is chamfered at its edges (22).
10. Polyethylene valve according to any of claims 6-9, wherein the reducing diameter (20) is injection moulded and machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201979.XU CN212004475U (en) | 2020-02-24 | 2020-02-24 | Reducing for polyethylene valve and polyethylene valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201979.XU CN212004475U (en) | 2020-02-24 | 2020-02-24 | Reducing for polyethylene valve and polyethylene valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004475U true CN212004475U (en) | 2020-11-24 |
Family
ID=73419384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020201979.XU Active CN212004475U (en) | 2020-02-24 | 2020-02-24 | Reducing for polyethylene valve and polyethylene valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004475U (en) |
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2020
- 2020-02-24 CN CN202020201979.XU patent/CN212004475U/en active Active
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