CN212407853U - Reducing pipeline connecting device - Google Patents
Reducing pipeline connecting device Download PDFInfo
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- CN212407853U CN212407853U CN202020960234.1U CN202020960234U CN212407853U CN 212407853 U CN212407853 U CN 212407853U CN 202020960234 U CN202020960234 U CN 202020960234U CN 212407853 U CN212407853 U CN 212407853U
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- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
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Abstract
The utility model relates to a reducing pipeline connecting device, which comprises a body, wherein the middle part of the body is provided with a through hole, and the two ends of the body are respectively provided with a first connecting part and a second connecting part; the first connecting part is provided with a first connecting hole, and an inner pipe thread is arranged in the first connecting hole; a step is formed at the joint of the first connecting hole and the through hole, a first sealing groove is formed in the step, and an O-shaped ring is arranged in the first sealing groove; the second connecting part is provided with a second connecting hole; the length of the second connecting hole does not exceed 1/4 of the length of the body; the diameter of the second connecting hole is larger than that of the through hole, a step is arranged at the connecting position of the second connecting hole and the through hole, a second sealing groove is arranged on the step, and a sealing element is arranged in the second sealing groove; the upper part of the second connecting hole is provided with a positioning strip which is in an inverted trapezoid shape; the length of the positioning strip is not more than that of the second connecting hole; and a welding groove is arranged at the joint of the second connecting hole and the end face of the body. The utility model has the advantages of, can carry out effective high-speed joint to little pipe diameter pipeline.
Description
Technical Field
The utility model relates to a coupling device field, especially a reducing pipeline connecting device.
Background
In the process of connecting various pipe systems, the problem of connection of different-diameter pipelines is often encountered, one pipeline is large, the other pipeline is small, when two pipelines are connected, the position relation and the pipe diameter difference are usually considered, concentric or eccentric different-diameter rubber joints are adopted for connection, the different-diameter rubber joints are usually in a two-piece flange structure, rubber and the like are adopted for connection in the middle, the sealing performance of the flange connection structure is not good under many conditions, and if the pipeline pressure is overlarge, leakage is easy to occur; in addition, under many conditions, the pipeline connecting part does not need to be disassembled, or only one side needs to be disassembled, the pipe diameter of the pipeline needing to be connected is small under some conditions, the flange plate is difficult to manufacture, small screws are difficult to operate, and a flange structure is not good.
In the related pipeline connection, in order to solve the problem of tightness, other similar schemes are provided, such as the chinese utility model patent: a structure disclosed in connection pipe (grant publication No. CN209762507U) is provided with a positioning part on the outer periphery of the pipe body, and the distance between the positioning part and the end of the pipe body is the designed insertion depth of the connection pipe when the connection pipe is inserted into a rubber pipe. This scheme is through increasing location portion in the connecting pipe periphery, is convenient for visualize or touch to be convenient for installation and inspection. When the connecting pipe is used for connecting with a rubber pipe, the consistent depth of the connecting pipe inserted into the rubber pipe can be ensured, namely, the insertion depth can be ensured to be the designed insertion depth, and the design requirement is met, so that the sealing reliability of pipeline connection is improved; the structure only ensures that the depth of the rubber tube inserted into the connecting tube is consistent, and the improvement of the sealing performance is limited.
There is also a joint structure as the Chinese utility model patent: the cone seal high-pressure threaded joint (No. CN209781914U) comprises a joint body, a clamping ring and a fastener, wherein two ends of an inner hole of the joint body form a pipeline connecting part respectively; the pipeline connecting part comprises an inner conical surface of the body, a clamping ring matching step and a fastener matching inner threaded part from inside to outside in sequence, and the clamping ring matching step is used for accommodating the clamping ring; the fastener is matched with the internal thread part and the external thread part of the fastener, and the fastener is connected with the joint body through threads; the clamping ring is provided with an internal thread matched with the metal pipe and is connected with the metal pipe through the thread; the internal thread of the clamping ring is opposite to the external thread of the fastening piece in the rotating direction. The screw thread direction between the fastener and the joint body and the screw thread direction between the metal pipe and the clamping ring are opposite, the metal pipe can be deeper into the joint body along with the tightening of the fastener in the installation process, the tightening effect is realized, and although a screw thread connection mode is adopted, the sufficient connection stability can be ensured, so that the high pressure resistance performance is realized. Although the joint with the structure has good sealing effect, the fastening piece and the clamping ring only interact by friction force, the fastening piece does not necessarily have the fastening effect, and the sealing effect is not necessarily good.
Therefore, further improvements in the pipe connecting device are required.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reducing pipeline connecting device can effectively connect the pipeline of tubule footpath, and is sealed effectual.
In order to achieve the purpose of the utility model, the reducing pipeline connecting device comprises a body, wherein a through hole is arranged in the middle of the body, and a first connecting part and a second connecting part are respectively arranged at two ends of the body;
the first connecting part is provided with a first connecting hole, and an inner pipe thread is arranged in the first connecting hole; the diameter of the first connecting hole is larger than that of the through hole, the length of the first connecting hole is not more than 1/3 of the length of the body, a step is formed at the connecting position of the first connecting hole and the through hole, a first sealing groove is formed in the first connecting hole, and an O-shaped ring is arranged in the first sealing groove;
the second connecting part is provided with a second connecting hole, the diameter of the second connecting hole is different from that of the first connecting hole in size, and the inner diameter of the second connecting hole is the same as that of the through hole; the length of the second connecting hole is not more than 1/4 of the length of the body; the diameter of the second connecting hole is larger than that of the through hole, a step is arranged at the connecting position of the second connecting hole and the through hole, a second sealing groove is formed in the step, and a sealing piece is arranged in the second sealing groove; the upper part of the second connecting hole is provided with a positioning strip which is in an inverted trapezoid shape; the length of the positioning strip is not more than that of the second connecting hole; and a welding groove is arranged at the joint of the second connecting hole and the end face of the body.
Further, the inner pipe thread is NPT American standard 60-degree taper pipe thread.
Further, the sealing element is a sealing gasket.
Further, the length of the positioning strip is 9/10 of the length of the second connecting hole.
The utility model relates to a reducing pipeline connecting device compares with prior art and has following advantage:
(1) the structure is simple, the connection is convenient, one end only needs to be fastened by pipe threads, and the other end adopts a welding mode, so that the sealing effect is good;
(2) the connecting device has low cost and simple manufacture, and can be used for conveniently disassembling the reducing pipeline connecting device.
Drawings
Fig. 1 is a top view of a variable diameter pipeline connection device of the present invention;
FIG. 2 is a sectional view of the reducing pipe connecting device of the present invention along the direction A-A;
fig. 3 is a schematic structural view of a variable diameter pipeline connection device of the present invention;
FIG. 4 is another schematic structural diagram of a variable diameter pipeline connection device of the present invention;
fig. 5 is a schematic view of the structure of the variable diameter pipeline connection device in use state.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-5, the variable diameter pipeline connecting device of the present invention comprises a body 1, wherein a through hole 11 is formed in the middle of the body 1, and a first connecting portion 12 and a second connecting portion 13 are respectively formed at two ends of the body 1;
the first connecting part 12 is provided with a first connecting hole 121, an inner pipe thread 122 is arranged in the first connecting hole 121, the inner pipe thread 122 preferably adopts NPT American standard 60-degree taper pipe thread, and the self-sealing performance is good; the diameter of the first connection hole 121 is larger than that of the through hole 11, the length of the first connection hole 121 does not exceed 1/3 of the length of the body 1, preferably, a step is formed at the connection position of the first connection hole 121 and the through hole 11, a first sealing groove 123 is formed, and a sealing member such as an O-ring can be arranged in the first sealing groove 123; the diameter of the first connection hole 121 is matched with the outer diameter of the outer first connection pipe 2, and an outer pipe thread corresponding to the inner pipe thread 122 is arranged on the outer first connection pipe 2;
the second connection part 13 is provided with a second connection hole 131, the diameter of the second connection hole 131 is different from the diameter of the first connection hole 121, the diameter of the second connection hole 131 is matched with the outer diameter of the external second connection pipe 3, and the inner diameter of the second connection pipe 3 is the same as the diameter of the through hole 11; the length of the second connection hole 131 does not exceed 1/4 of the length of the body 1; the diameter of the second connecting hole 131 is also larger than that of the through hole 11, a step is arranged at the connecting position of the second connecting hole 131 and the through hole 11, a second sealing groove 133 is arranged on the step, and a sealing element 134 is arranged in the second sealing groove 133; the sealing member 134 is preferably a gasket or the like; a positioning bar 135 is arranged at the upper part of the second connecting hole 131, the positioning bar 135 is in an inverted trapezoid shape, and a clamping groove matched with the positioning bar 135 is arranged on the second connecting pipe 3 at the outer part; the length of the positioning bar 135 is slightly shorter than the length of the second connection hole 131, and may be set to 9/10 of the length of the second connection hole 131; the joint of the second connecting hole 131 and the end face of the body 1 is provided with a welding groove 132.
The utility model relates to a reducing pipeline connecting device is when using, if the position of outside first connecting pipe 2 and second connecting pipe 3 is all fixed, perhaps length is too long to rotate, at this moment, at first install the sealing member in first connecting portion 12 and the second connecting portion 13, then be connected first connecting portion 12 and outside first connecting pipe 2, through the cooperation of pipe thread each other, the outer pipe thread of first connecting pipe 2 combines each other with the inner pipe thread 122 on the first connecting hole 121, similar with conventional connected mode, can twine the raw material area on the outer pipe thread, twist first connecting portion 12 of reducing pipeline connecting device into on first connecting pipe 2; a clamping groove is formed in the upper portion of the second connecting pipe 3, the shape of the clamping groove is matched with that of the positioning strip 135, after the reducing pipeline connecting device is screwed into the first connecting pipe 2, the positioning strip 135 of the second connecting hole 131 is clamped into the second connecting pipe 3, if the position is slightly deviated, the reducing pipeline connecting device can be slightly screwed, so that the positioning strip 135 can be well matched with the position of the second connecting pipe 3, then the reducing pipeline connecting device is welded onto the second connecting pipe 3 through a welding groove 132, a connecting portion between the second connecting pipe 3 and the second connecting hole 131 is sealed through a sealing piece 134, and the sealing effect of the connecting device is guaranteed through external welding; the first connection pipe 2 is connected with the first connection hole 121 through a pipe thread, and a good sealing effect can be achieved even if the first connection pipe is not completely screwed. If the pipe connecting device needs to be disassembled, the welding part of the reducing pipeline connecting device and the second connecting pipe 3 is broken, the reducing pipeline connecting device is taken down from the second connecting pipe 3, and then the reducing pipeline connecting device is screwed down from the first connecting pipe 2.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. 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.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (4)
1. A reducing pipeline connecting device comprises a body, wherein a through hole is formed in the middle of the body, and the reducing pipeline connecting device is characterized in that a first connecting part and a second connecting part are respectively arranged at two ends of the body;
the first connecting part is provided with a first connecting hole, and an inner pipe thread is arranged in the first connecting hole; the diameter of the first connecting hole is larger than that of the through hole, the length of the first connecting hole is not more than 1/3 of the length of the body, a step is formed at the connecting position of the first connecting hole and the through hole, a first sealing groove is formed in the first connecting hole, and an O-shaped ring is arranged in the first sealing groove;
the second connecting part is provided with a second connecting hole, the diameter of the second connecting hole is different from that of the first connecting hole in size, and the inner diameter of the second connecting hole is the same as that of the through hole; the length of the second connecting hole is not more than 1/4 of the length of the body; the diameter of the second connecting hole is larger than that of the through hole, a step is arranged at the connecting position of the second connecting hole and the through hole, a second sealing groove is formed in the step, and a sealing piece is arranged in the second sealing groove; the upper part of the second connecting hole is provided with a positioning strip which is in an inverted trapezoid shape; the length of the positioning strip is not more than that of the second connecting hole; and a welding groove is arranged at the joint of the second connecting hole and the end face of the body.
2. The variable diameter pipe connection as defined in claim 1, wherein said female pipe threads are NPT american standard 60 degree cone threads.
3. The variable diameter pipe connection according to claim 1, wherein said sealing member is a gasket seal.
4. The variable diameter pipe connecting device according to claim 1, wherein the length of said positioning strip is 9/10 times the length of said second connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960234.1U CN212407853U (en) | 2020-05-29 | 2020-05-29 | Reducing pipeline connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960234.1U CN212407853U (en) | 2020-05-29 | 2020-05-29 | Reducing pipeline connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407853U true CN212407853U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020960234.1U Active CN212407853U (en) | 2020-05-29 | 2020-05-29 | Reducing pipeline connecting device |
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| CN (1) | CN212407853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115057086A (en) * | 2022-05-21 | 2022-09-16 | 安徽青瓷潭酒业有限公司 | White spirit cellaring device |
-
2020
- 2020-05-29 CN CN202020960234.1U patent/CN212407853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115057086A (en) * | 2022-05-21 | 2022-09-16 | 安徽青瓷潭酒业有限公司 | White spirit cellaring device |
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