CN218236465U - Plastic-lined internal thread pipe fitting - Google Patents
Plastic-lined internal thread pipe fitting Download PDFInfo
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- CN218236465U CN218236465U CN202123029733.2U CN202123029733U CN218236465U CN 218236465 U CN218236465 U CN 218236465U CN 202123029733 U CN202123029733 U CN 202123029733U CN 218236465 U CN218236465 U CN 218236465U
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- pipe fitting
- internal thread
- fitting body
- thread pipe
- lining
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Abstract
The utility model discloses an internal thread pipe fitting is moulded to lining. A lining plastic internal thread pipe fitting comprises an internal thread pipe fitting body, a lining plastic layer and a sealing ring, wherein the internal thread pipe fitting body is an internal thread pipe fitting body with at least two end ports, and the lining plastic layer is respectively provided with a part extending obliquely and a part extending parallelly towards the internal surface thread parts of at least two end ports of the adjacent internal thread pipe fitting body; the length of the vertical cross section chamfer-shaped part of the inner lining plastic layer extending towards the thread parts on the inner surfaces of at least two end ports of the adjacent internal thread pipe fitting body is 1.5-7 mm, and the chamfer angle of the chamfer-shaped part is 45-70 degrees. The utility model discloses a liner is moulded internal thread pipe fitting cooling back liner and is moulded the layer shrink and not peel off with the pipe fitting inner chamber, has prevented that the liner from moulding the layer not hard up, and the internal thread pipe fitting product percent of pass is moulded to the liner reaches 98.5%, has improved the liner and has moulded the installation result of use of internal thread pipe fitting.
Description
Technical Field
The utility model belongs to a pipeline connecting piece especially belongs to an interior thread pipe fitting is moulded to lining.
Background
The plastic-lined pipe fitting is a novel product upgraded on the basis of the traditional galvanized pipe fitting for meeting the market and environmental protection requirements, and the plastic-lined pipe fitting takes the pipe fitting as a base (the pipe fitting is one of a malleable iron pipe fitting, a ductile iron pipe fitting, a high-carbon steel pipe fitting or a stainless steel pipe fitting) and is lined with a plastic layer. However, after the existing lining plastic internal thread pipe fitting is lined with plastic, due to expansion with heat and contraction with cold of the lining plastic layer, the shrinkage of the lining plastic layer can sometimes be peeled off from the inner cavity of the pipe fitting after the lining plastic internal thread pipe fitting is cooled, so that about 30% of lining plastic pipe fitting lining plastic layer is loosened, and the installation and use of the lining plastic internal thread pipe fitting are influenced. How to prevent that the liner from moulding the layer shrink and not peeling off with the pipe fitting inner chamber after the cooling of interior thread pipe fitting is moulded to the liner, prevent that the liner from moulding the layer not hard up, improve the liner and mould interior thread pipe fitting product qualification rate, improve the liner and mould the problem that interior thread pipe fitting product installation result of use need solve.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a plastic-lined internally threaded pipe fitting is provided. This interior thread pipe spare is moulded to lining can prevent to line to mould that the layer shrink is moulded to interior thread pipe spare cooling back lining and not peeled off with the pipe fitting inner chamber, can prevent that the lining from moulding the layer not hard up, improves the lining and moulds interior thread pipe spare product qualification rate, improves the lining and moulds interior thread pipe spare installation result of use.
The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides an interior thread pipe fitting is moulded to lining, moulds the layer including interior thread pipe fitting body, inside lining, still includes the sealing washer, characterized by: the internal thread pipe fitting body is an internal thread pipe fitting body with at least two end ports, the inner surfaces of the at least two end ports of the internal thread pipe fitting body are respectively provided with threads, the lining plastic layer is respectively provided with a part extending obliquely towards the inner surface thread parts of the at least two end ports of the adjacent internal thread pipe fitting body and a part extending in parallel, and sealing rings are respectively arranged between the obliquely extending part and the parallel extending part of the lining plastic layer sequentially towards the inner surface thread parts of the at least two end ports of the adjacent internal thread pipe fitting body; the vertical cross sections of the inclined extending parts of the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body of the lining plastic layer are in a chamfer shape, the lengths of the inclined extending parts of the vertical cross sections of the inclined extending parts of the lining plastic layer towards the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body are 1.5-7 mm, and the chamfer angles of the inclined extending parts of the vertical cross sections of the inclined extending parts of the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body of the lining plastic layer are 45-70 degrees;
the internal thread pipe fitting body is one of an internal thread elbow pipe fitting body, an internal thread tee pipe fitting body or an internal thread pipe hoop pipe fitting body; the internal thread pipe fitting body is one of a malleable steel internal thread pipe fitting body, a ductile iron internal thread pipe fitting body, a high-carbon steel internal thread pipe fitting body or a stainless steel internal thread pipe fitting body.
The utility model has the advantages that: the utility model discloses a lining plastic internal thread pipe fitting, including internal thread pipe fitting body, lining plastic layer, sealing washer, internal thread pipe fitting body is the internal thread pipe fitting body that has at least both ends port, and lining plastic layer has the part that extends to the internal surface screw thread part slope of at least both ends port of adjacent internal thread pipe fitting body and the part that extends parallelly respectively, and lining plastic layer installs the sealing washer between the internal surface screw thread part slope extension part of at least both ends port of adjacent internal thread pipe fitting body and the parallel extension part in proper order; the vertical cross sections of the parts, extending obliquely towards the internal surface thread parts of the ports at least at two ends of the adjacent internal thread pipe fitting body, of the internal lining plastic layers are in a chamfer shape, the length of the vertical cross sections, extending obliquely towards the internal surface thread parts of the ports at least at two ends of the adjacent internal thread pipe fitting body, of the internal lining plastic layers is 1.5-7 mm, and the chamfer angle of the vertical cross sections, extending obliquely towards the internal surface thread parts of the ports at least at two ends of the adjacent internal thread pipe fitting body, of the internal lining plastic layers is 45-70 degrees. The length of the chamfer-shaped part of the vertical section of the lining plastic layer extending towards the inclined inner surface thread parts of at least two end ports of the adjacent internal thread pipe fitting body is 1.5-7 mm, namely the length of the chamfer-shaped part of the vertical section of the lining plastic layer extending towards the inclined inner surface thread parts of at least two end ports of the adjacent internal thread pipe fitting body is 1-3 threads, namely the vertical section of the lining plastic layer extending towards the inclined inner surface thread parts of at least two end ports of the adjacent internal thread pipe fitting body is hung on the thread of the inner surface of at least two end ports of the internal thread pipe fitting body, so that the lining plastic layer can be firmly matched with the thread parts of the inner surface of at least two end ports of the internal thread pipe fitting body after being contracted without looseness, and meanwhile, the chamfer angle of the chamfer-shaped part of the vertical section extending towards the inclined inner surface thread parts of at least two end ports of the adjacent internal thread pipe fitting body is 45-70 degrees and is gradually reduced towards the diameter size of one side close to the outer vertical face of at least two end ports of the internal thread pipe fitting body. The utility model discloses a line is moulded internal thread pipe fitting cooling back line and is moulded layer shrink and not peeled off with the pipe fitting inner chamber, has prevented that the line from moulding the layer not hard up, improves the line and moulds internal thread pipe fitting product percent of pass, and the line is moulded internal thread pipe fitting product percent of pass and is reached 98.5%, has improved the line and has moulded the installation result of use of internal thread pipe fitting.
The following table is a product qualification statistical table of 5 batches (120 pieces per batch) of plastic-lined internal thread pipe fittings
Note:
the plastic lining layer is not peeled from the inner cavity of the plastic lining internal thread pipe fitting, and the plastic lining layer is not loosened to obtain a qualified plastic lining internal thread pipe fitting product;
stripping the inner cavity of the plastic-lined layer and the plastic-lined internal thread pipe fitting, and loosening the plastic-lined layer to obtain an unqualified plastic-lined internal thread pipe fitting product;
drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic structural view of a plastic-lined internal thread elbow pipe fitting in embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a plastic-lined internal thread tee pipe fitting in embodiment 2 of the present invention;
fig. 3 is a schematic structural view of a plastic-lined internal thread pipe hoop pipe fitting in embodiment 3 of the present invention;
fig. 4 is an enlarged view of a portion of fig. 3 according to the present invention;
in the drawings: 1. the pipe fitting comprises an internal thread elbow pipe fitting body, a 2 internal thread tee pipe fitting body, a 3 internal thread pipe hoop pipe fitting body, a 4 lining plastic layer, a 5 sealing ring, a 41 obliquely extending part and a 42 parallel extending part.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
Example 1
As shown in fig. 1, an interior thread pipe fitting is moulded to lining, the interior thread pipe fitting is moulded for lining to mould interior thread elbow pipe fitting, and the interior thread elbow pipe fitting is moulded to lining includes that interior thread elbow pipe fitting body 1, inside lining mould layer 4, still includes sealing washer 5, characterized by: the internal thread elbow pipe fitting body 1 is an internal thread elbow pipe fitting body with two end ports, the inner surfaces of the two end ports of the internal thread elbow pipe fitting body 1 are respectively provided with threads, the lining plastic layer 4 is respectively provided with a part 41 extending obliquely towards the inner surface thread parts of the two end ports of the adjacent internal thread elbow pipe fitting body 1 and a part 42 extending parallelly, and the lining plastic layer 4 is sequentially provided with sealing rings 5 between the oblique extending part 41 and the parallel extending part 42 of the inner surface thread parts of the two end ports of the adjacent internal thread elbow pipe fitting body 1; the vertical sections of the inclined extending parts 41 of the inner lining plastic layer 4 towards the inner surface thread parts of the ports at the two ends of the adjacent female elbow pipe fitting body 1 are in a chamfer shape, the length of the inclined extending vertical sections of the inner lining plastic layer 4 towards the inner surface thread parts of the ports of the adjacent female elbow pipe fitting body 1 is 1.5 mm, and the chamfer angle of the inclined extending vertical sections of the inner lining plastic layer 4 towards the inner surface thread parts of the ports at the two ends of the adjacent female elbow pipe fitting body 1 is 45 degrees;
the female thread elbow pipe fitting body 1 is a malleable iron female thread elbow pipe fitting body.
Example 2
As shown in fig. 2, the lining plastic internal thread pipe fitting is characterized in that the lining plastic internal thread pipe fitting is a lining plastic internal thread tee pipe fitting, the lining plastic internal thread tee pipe fitting comprises an internal thread tee pipe fitting body 2, a lining plastic layer 4 and a sealing ring 5: the internal thread three-way pipe fitting body 2 is an internal thread three-way pipe fitting body with three-end ports, the inner surfaces of the three-end ports of the internal thread three-way pipe fitting body 2 are respectively provided with threads, the lining plastic layer 4 is respectively provided with a part 41 extending obliquely towards the thread part of the inner surface of the three-end port of the adjacent internal thread three-way pipe fitting body 2 and a part 42 extending in parallel, and a sealing ring 5 is arranged between the inclined extending part 41 and the parallel extending part 42 of the inner surface of the three-end port of the adjacent internal thread three-way pipe fitting body 2; the vertical cross section of the inclined extension part 41 of the inner surface of the three-end port of the adjacent internal thread three-way pipe fitting body 2 of the lining plastic layer is in a chamfer shape, the length of the inclined extension part of the vertical cross section of the inclined extension part of the lining plastic layer to the inner surface of the three-end port of the adjacent internal thread three-way pipe fitting body is 5 mm, and the chamfer angle of the inclined extension part of the vertical cross section of the inclined extension part of the lining plastic layer 4 to the inner surface of the three-end port of the adjacent internal thread three-way pipe fitting body 2 is 60 degrees;
the internal thread three-way pipe fitting body 2 is a ball iron internal thread three-way pipe fitting body.
Example 3
As shown in fig. 3, fig. 4, an interior thread pipe fitting is moulded to lining, the interior thread pipe fitting is moulded for lining to mould interior thread ferrule pipe fitting, and the interior thread ferrule pipe fitting is moulded to lining includes that the layer 4 is moulded to interior thread ferrule pipe fitting body 3, inside lining, still includes sealing washer 5, characterized by: the internal thread pipe hoop pipe fitting body 3 is an internal thread pipe hoop pipe fitting body with two end ports, the inner surfaces of the two end ports of the internal thread pipe hoop pipe fitting body 3 are respectively provided with threads, the lining plastic layer 4 is respectively provided with a part 41 extending obliquely towards the inner surface thread parts of the two end ports of the adjacent internal thread pipe hoop pipe fitting body and a part 42 extending in parallel, and the lining plastic layer 4 is sequentially provided with sealing rings 5 between the obliquely extending part 41 and the parallel extending part 42 towards the inner surface thread parts of the two end ports of the adjacent internal thread pipe hoop pipe fitting body 3; the vertical cross sections of the inclined extending parts of the inner lining plastic layers 4 towards the inner surface threaded parts of the ports at the two ends of the adjacent internal thread pipe hoop pipe fitting body 3 are in a chamfer shape, the length of the inclined extending vertical cross sections of the inner lining plastic layers 4 towards the inner surface threaded parts of the ports of the adjacent internal thread pipe hoop pipe fitting body is 7 mm, and the chamfer angle of the inclined extending vertical cross sections of the inner lining plastic layers 4 towards the inner surface threaded parts of the ports at the two ends of the adjacent internal thread pipe hoop pipe fitting body is 70 degrees;
the internal thread pipe hoop pipe fitting body 3 is a high-carbon steel internal thread pipe hoop pipe fitting body.
From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (2)
1. The utility model provides an interior thread pipe fitting is moulded to lining, moulds the layer including interior thread pipe fitting body, inside lining, still includes the sealing washer, characterized by: the internal thread pipe fitting body is an internal thread pipe fitting body with at least two end ports, the inner surfaces of the at least two end ports of the internal thread pipe fitting body are respectively provided with threads, the lining plastic layer is respectively provided with a part extending obliquely towards the inner surface thread parts of the at least two end ports of the adjacent internal thread pipe fitting body and a part extending in parallel, and sealing rings are respectively arranged between the obliquely extending part and the parallel extending part of the lining plastic layer sequentially towards the inner surface thread parts of the at least two end ports of the adjacent internal thread pipe fitting body; the vertical cross sections of the inclined extending parts of the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body of the lining plastic layer are in a chamfer shape, the lengths of the inclined extending parts of the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body of the lining plastic layer to the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body are in a chamfer shape are 1.5-7 mm, and the chamfer angle of the inclined extending vertical cross sections of the inclined extending parts of the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body of the lining plastic layer to the inner surface of the ports at least two ends of the adjacent internal thread pipe fitting body is 45-70 degrees.
2. The plastic-lined internally threaded pipe fitting of claim 1, wherein: the internal thread pipe fitting body is one of an internal thread elbow pipe fitting body, an internal thread tee pipe fitting body or an internal thread pipe hoop pipe fitting body; the internal thread pipe fitting body is one of a malleable steel internal thread pipe fitting body, a ductile iron internal thread pipe fitting body, a high-carbon steel internal thread pipe fitting body or a stainless steel internal thread pipe fitting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123029733.2U CN218236465U (en) | 2021-12-03 | 2021-12-03 | Plastic-lined internal thread pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123029733.2U CN218236465U (en) | 2021-12-03 | 2021-12-03 | Plastic-lined internal thread pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218236465U true CN218236465U (en) | 2023-01-06 |
Family
ID=84662489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123029733.2U Active CN218236465U (en) | 2021-12-03 | 2021-12-03 | Plastic-lined internal thread pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218236465U (en) |
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2021
- 2021-12-03 CN CN202123029733.2U patent/CN218236465U/en active Active
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