CN216590428U - Welding-free flange joint - Google Patents
Welding-free flange joint Download PDFInfo
- Publication number
- CN216590428U CN216590428U CN202123148257.6U CN202123148257U CN216590428U CN 216590428 U CN216590428 U CN 216590428U CN 202123148257 U CN202123148257 U CN 202123148257U CN 216590428 U CN216590428 U CN 216590428U
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- flange
- flared
- conical surface
- steel pipe
- joint
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Abstract
The utility model discloses a welding-free flange joint, which comprises a steel pipe, wherein one end of the steel pipe is provided with a flared expansion part; the flange core is arranged on the inner side of the flared enlargement part, and the outer conical surface of one end of the flange core is attached to the inner wall of the flared enlargement part; the flange pressing plate is arranged on the outer side of the flared expansion part and connected with the joint mounting surface, an inner conical surface is arranged on the inner side of a central hole of the flange pressing plate, and the inner conical surface and the outer conical surface clamp and fix the flared expansion part together. The utility model has simple structure and solves the technical problem that the existing flange joint and the steel pipe need to be welded and connected.
Description
Technical Field
The utility model relates to the field of hydraulic element pipeline accessories, in particular to a welding-free flange joint.
Background
The pipeline accessories with flanges used in the existing industry are generally connected with steel pipes in a welding mode (as shown in figure 1), and the welding defects are mainly that the quality is unstable, pressure testing is needed after welding, processes such as acid pickling phosphorization, paint spraying or plastic spraying are needed, special equipment is needed for completion, the production efficiency is greatly influenced, and the production cost is increased. And the welding product is influenced by the welding process, welding parameters and welding speed, so that the welding product is difficult to achieve stable quality, and meanwhile, the welding part is easy to crack when an engineering vehicle vibrates, so that the oil leakage of the oil pipe is caused to fail.
SUMMERY OF THE UTILITY MODEL
The utility model provides a welding-free flange joint which is simple in structure and solves the technical problem that the existing flange joint and a steel pipe need to be welded and connected.
In order to achieve the purpose, the utility model provides the following technical scheme: a weld-free flange joint, comprising:
the steel pipe, one end of the said steel pipe has flared enlargement parts;
the flange core is arranged on the inner side of the flared enlargement part, and the outer conical surface of one end of the flange core is attached to the inner wall of the flared enlargement part;
the flange pressing plate is arranged on the outer side of the flared expansion part and connected with the joint mounting surface, an inner conical surface is arranged on the inner side of a central hole of the flange pressing plate, and the inner conical surface and the outer conical surface clamp and fix the flared expansion part together.
Preferably, the other end surface of the flange core abuts against the joint attachment surface, and a first seal ring is attached between the end surface of the flange core and the joint attachment surface.
Preferably, a second sealing ring is installed between the outer side of the flared expansion part and the inner conical surface.
Preferably, the flange pressing plate is provided with a plurality of connecting holes around the edge.
Compared with the prior art, the utility model has the beneficial effects that:
the structure is compact, a welding-free flange connection mode is adopted, a flared steel pipe is connected with a welding-free flange core, and a packing sealing mode is adopted, so that the welding-free flange structure is more stable in quality, convenient to install and convenient to maintain than a welding-type flange structure; the steel pipe adopts a galvanized pipe, surface treatment such as acid pickling phosphorization, paint spraying and the like is not needed after connection, the quality is better, the environment is more protected, and the bearing capacity is higher.
Drawings
FIG. 1 is a front cross-sectional view of the present invention before improvement;
FIG. 2 is a front cross-sectional view of the present invention in a modified form;
FIG. 3 is a side view structural diagram of the improvement of the present invention;
FIG. 4 is a cross-sectional structural view of the flange core of the present invention;
fig. 5 is a sectional structural view of the flange pressing plate of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1-5, the present invention provides a weld-free flange joint, comprising:
the steel pipe 1, the one end of steel pipe 1 be provided with flared enlargement portion 6, flared enlargement portion 6 and steel pipe 1 be the integrated into one piece structure, steel pipe 1 adopts the galvanized steel pipe, need not carry out surface treatment such as pickling bonderizing, spray paint after the connection.
In this embodiment, the flange core 4 is disposed inside the flared portion 6, an outer tapered surface 8 of one end of the flange core is attached to an inner wall of the flared portion 6, and the flange core 4 abuts against the flared portion 6 from the inside and axially limits the position of the steel pipe 1.
In this embodiment, the flange pressing plate 2 is disposed outside the flared portion 6 and connected to the joint mounting surface, an inner conical surface 9 is disposed inside a central hole of the flange pressing plate 2, the inner conical surface 9 and the outer conical surface 8 clamp and fix the flared portion 6 together, the flange pressing plate 2 is equivalent to a pressing plate, the steel pipe 1 is pressed on the joint mounting surface, and meanwhile, axial force is applied to the steel pipe 1 due to the mutual interaction between the inner conical surface 9 and the outer conical surface 8.
In order to improve the sealing performance, the other end face of the flange core 4 is abutted to the joint mounting face, a first sealing ring 5 is arranged between the end face of the flange core 4 and the joint mounting face, meanwhile, a second sealing ring 3 is arranged between the outer side of the flared expansion portion 6 and the inner conical surface 9, and the first sealing ring 5 and the second sealing ring 3 are both arranged in corresponding sealing grooves, preferably O-shaped sealing rings.
In order to facilitate the installation and fixation of the flange pressing plate 2, a plurality of connecting holes 7, preferably four connecting holes, are arranged around the edge of the flange pressing plate 2 and are arranged at the top corners of the flange pressing plate 2.
Therefore, the flange joint in the embodiment is compact in structure, a welding-free flange connection mode is adopted, the flared steel pipe is connected with the welding-free flange core, and a packing sealing mode is adopted, so that the flange joint is more stable in quality, convenient to install and convenient to maintain than a welding mode; the steel pipe adopts a galvanized pipe, surface treatment such as acid pickling phosphorization, paint spraying and the like is not needed after connection, the quality is better, the environment is more protected, and the bearing capacity is higher.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions such as "first", "second", etc. in the present invention 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 the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; 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 invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (4)
1. A weld-free flange joint, comprising:
the steel pipe comprises a steel pipe (1), wherein one end of the steel pipe (1) is provided with a flared expansion part (6);
the flange core (4) is arranged on the inner side of the flared enlargement part (6), and an outer conical surface (8) at one end of the flange core is attached to the inner wall of the flared enlargement part (6);
the flange pressing plate (2) is arranged on the outer side of the flared enlargement portion (6) and connected with the joint mounting surface, an inner conical surface (9) is arranged on the inner side of a center hole of the flange pressing plate (2), and the inner conical surface (9) and the outer conical surface (8) clamp and fix the flared enlargement portion (6) together.
2. The weld-free flange joint of claim 1, wherein: the end face of the other end of the flange core (4) is abutted to the joint mounting face, and a first sealing ring (5) is mounted between the end face of the flange core (4) and the joint mounting face.
3. The weld-free flange joint of claim 1, wherein: and a second sealing ring (3) is arranged between the outer side of the flared enlargement part (6) and the inner conical surface (9).
4. The weld-free flange joint of claim 1, wherein: the flange pressing plate (2) is provided with a plurality of connecting holes (7) around the edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123148257.6U CN216590428U (en) | 2021-12-15 | 2021-12-15 | Welding-free flange joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123148257.6U CN216590428U (en) | 2021-12-15 | 2021-12-15 | Welding-free flange joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216590428U true CN216590428U (en) | 2022-05-24 |
Family
ID=81613899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123148257.6U Active CN216590428U (en) | 2021-12-15 | 2021-12-15 | Welding-free flange joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216590428U (en) |
-
2021
- 2021-12-15 CN CN202123148257.6U patent/CN216590428U/en active Active
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