Stainless steel joint pipe fitting
Through the reduction and diameter processing and the combination of nut joints and clamping structures, the welding problems and single-function problems existing in the processing of existing stainless steel joints and pipe fittings are solved, and efficient, beautiful and functional stainless steel joints and pipe fittings are realized.
Patent Information
- Application Number
- CN202421314796.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Existing stainless steel joint pipe fittings need to be welded during processing, resulting in pipe deformation, residual stress and welding marks affecting the aesthetics and performance, and have a single function and insufficient applicability.
The stainless steel thin pipe is directly processed into a small diameter section, a reduction transition section and a large diameter section using the shrinking and diameter reducing method. Combined with the movable nut joint and the clamping structure, the connector is added to realize the shunt or external connection function.
It avoids complicated welding steps, improves production efficiency and reduces costs, ensures the structural strength and sealing performance of the pipe body, and enhances the functionality and scalability of the pipe fittings.
Smart Images
Figure CN222377462U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline joints, in particular to a stainless steel joint pipe fitting. Background Art
[0002] The installation process of stainless steel compression joint pipe fittings is simple and quick. Only a special compression tool is needed to complete the connection. In order to be able to connect with equipment with an external thread joint, it is necessary to develop a stainless steel joint pipe fitting with a nut inner thread joint and a compression joint. However, the pipe body diameters of the inner thread joint and the compression joint are different. Therefore, the processing method of the stainless steel joint pipe fitting in the past is to independently process the nut inner thread joint and the compression joint, and then connect the nut inner thread joint and the compression joint pipe body by welding, and then grind and polish the welded part, but there will still be welds that affect the appearance. During the welding process, the pipe may be deformed, and residual stress will be generated after welding, which may cause the shape of the pipe to be unstable or affect its service life. Welding will generate high temperature at the connection part, which may cause the heat-affected zone of the pipe, so that the performance of the pipe changes, such as hardness, toughness, etc. In addition, grinding and polishing will also increase the processing cost. In addition, the stainless steel joint pipe fitting has a single function and does not have the functions of diversion or external function table.
[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a stainless steel joint pipe fitting that is easy to process, and also to solve the problem that traditional stainless steel joint pipe fittings have single functions and insufficient applicability.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A stainless steel joint pipe fitting comprises a pipe body having a small diameter section and a large diameter section, characterized in that the small diameter section and the large diameter section are transitionally connected by a shrinking and reducing diameter method, the small diameter section is sleeved with a movable nut joint and the end away from the large diameter section is formed into an outward-turned and annular convex edge by integral bending, the nut joint is restricted to move freely between the large diameter section and the convex edge, and the end of the large diameter section away from the small diameter section forms a clamping structure; a connector connected to the inside of the large diameter section is arranged on the side wall of the large diameter section.
[0007] As a further improvement of the above technical solution, the connector is provided with an external thread on the end away from the large diameter pipe section.
[0008] As a further improvement of the above technical solution, the connector is provided with an internal thread at the end away from the large diameter pipe section.
[0009] As a further improvement of the above technical solution, two connectors are provided, one of which is provided with an external thread on the end away from the large diameter section, and the other connector is provided with an internal thread on the end away from the large diameter section.
[0010] As a further improvement of the above technical solution, the clamping structure is at least one convex ring arranged on the large diameter pipe section, and the same number of O-rings as the convex rings and one-to-one corresponding to each other, and the convex ring forms an inner arc groove in the large diameter pipe section for cooperating with the O-ring.
[0011] As a further improvement of the above technical solution, a sealing groove is provided on the bottom surface of the convex edge, and a sealing ring is provided in the sealing groove.
[0012] As a further improvement of the above technical solution, the nut joint is a hexagonal nut, the inner wall of the hexagonal nut is provided with an internal thread, the end of the internal thread is provided with a limiting circular protrusion extending toward the axis, and the limiting circular protrusion cooperates with the convex edge to limit the hexagonal nut from detaching from the small diameter section.
[0013] Beneficial effects of the utility model: Compared with the prior art, the stainless steel joint pipe fittings provided by the utility model innovatively adopt the shrinking and reducing diameter method to directly process the stainless steel thin pipe into a small diameter section, a shrinking transition section and a large diameter section. This process avoids complicated welding or splicing steps, reduces the production process, and is conducive to improving production efficiency and reducing costs. The integrated molding ensures the structural strength and sealing performance of the pipe body, while making the surface of the pipe fittings smooth and free of welding marks, which is conducive to aesthetics and reducing fluid resistance. The large diameter section of the pipe body can be quickly connected to the water pipe through a clamping structure, which simplifies the on-site installation process and saves manpower and time. The small diameter section 11 of the pipe body 1 is connected to the valve body through a nut joint 4, and the nut joint 4 can move freely within a certain range, which enhances the flexibility of the pipe fitting to connect with adjacent pipelines or equipment. In addition, by adding a connector to the pipe body, the branch pipe, function table and functionality can be connected according to needs, which enhances the functionality and scalability of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional view of a stainless steel joint pipe fitting with two connecting heads.
[0015] Figure 2 Schematic diagram of the free movement of the nut joint in the small diameter pipe section.
[0016] Figure 3 Schematic diagram of the internal structure of the nut joint.
[0017] Figure 4 A schematic diagram of a connector with external threads set on a stainless steel fitting.
[0018] Figure 5 A schematic diagram of a connector with internal threads set on a stainless steel fitting.
[0019] Explanation of the main component symbols: 1-tube body, 11-small diameter section, 12-narrowing transition section, 13-large diameter section, 21-convex ring, 3-convex edge, 31-sealing groove, 32-sealing ring, 4-nut joint, 41-limiting circular convex, 42-internal thread, 5-connector, 51-external thread, 52-internal thread, 6-O-ring. DETAILED DESCRIPTION
[0020] The utility model provides a stainless steel joint pipe fitting. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.
[0021] See also Figure 1-Figure 5 The utility model provides a stainless steel joint pipe fitting, comprising a pipe body 1 having a small diameter section 11 and a large diameter section 13, the small diameter section 11 and the large diameter section 13 are transitionally connected by a shrinking and reducing diameter mode, which can be understood as the diameter of the large diameter section 13 is larger than the small diameter section 11. When processing the pipe body 1, a stainless steel thin pipe with the same diameter as the large diameter section 13 is processed by a shrinking machine, and the pipe body 1 is successively formed into a small diameter section 11, a shrinking transition section 12 and a large diameter section 13. The pipe body 1 is smoothly formed and easy to process. The small diameter section 11 is sleeved with a movable nut joint 4 and the end away from the large diameter section 13 is formed into an outward-turned and annular convex edge 3 by integral bending. The nut joint 4 is restricted to move freely between the large diameter section 13 and the convex edge 3, and the end of the large diameter section 13 away from the small diameter section 11 forms a clamping structure; the side wall of the large diameter section 13 is provided with a connector 5 connected to the inside of the large diameter section 13.
[0022] Compared with the prior art, the stainless steel joint pipe fitting provided by the utility model innovatively adopts the shrinking and reducing diameter method to directly process the stainless steel thin pipe into a small diameter section 11, a shrinking transition section 12 and a large diameter section 13. This process avoids complicated welding or splicing steps, reduces the production process, and is conducive to improving production efficiency and reducing costs. The integrated molding ensures the structural strength and sealing performance of the pipe body 1, while making the surface of the pipe fitting smooth and free of welding marks, which is conducive to aesthetics and reducing fluid resistance. The large diameter section 13 of the pipe body 1 can be quickly connected to the water pipe through a compression structure, which simplifies the on-site installation process and saves manpower and time. The small diameter section 11 of the pipe body 1 is connected to the valve body through a nut joint 4, and the nut joint 4 can move freely within a certain range, which enhances the flexibility of the pipe fitting to connect with adjacent pipelines or equipment. In addition, by adding a connector 5 to the pipe body 1, the branch pipe, function table and functionality can be connected according to needs, which enhances the functionality and scalability of the pipeline system.
[0023] In one embodiment, see Figure 4 As shown, the connector 5 is provided with an external thread 51 at the end of the connector 5 away from the large diameter section 13. The connector 5 with the external thread 51 can be easily connected with the branch pipe, elbow, and branch joint on the market.
[0024] In one embodiment, see Figure 5 As shown, the connector 5 is provided with an internal thread 52 at the end away from the large diameter section 13. Since the connection ends of pressure gauges and thermometers on the market are generally external threads 51, the internal thread 52 of the connector 5 is connected to the external thread 51 of the pressure gauge / temperature gauge, and the user can connect the pressure gauge to observe the pressure of the fluid in real time, or connect the thermometer to observe the temperature of the fluid in real time according to the needs.
[0025] In one embodiment, see Figure 1-Figure 3 As shown, there are two connectors 5, one of which is provided with an external thread 51 at the end away from the large diameter section 13, and the other connector 5 is provided with an internal thread 52 at the end away from the large diameter section 13. Users can connect a pressure gauge / temperature gauge to observe the pressure / temperature of the fluid in real time according to needs, or connect a branch pipe to achieve diversion, which greatly improves the applicability of stainless steel joint pipes. At the same time, one of the connectors 5 is provided with an external thread 51, and the other connector 5 is provided with an internal thread 52, so that different forms of connection requirements can be met, and the practicality is higher.
[0026] Specifically, the clamping structure is at least one convex ring 21 arranged on the large diameter section 13, and an O-ring 632 having the same number and one-to-one correspondence as the convex ring 21, wherein the convex ring 21 forms an inner arc groove in the large diameter section 13 for cooperating with the O-ring 632. When the stainless steel joint pipe is connected to the water pipe, the water pipe with a diameter slightly smaller than the large diameter section 13 is inserted into the large diameter section 13. Since the diameter of the small diameter section 11 is smaller than that of the large diameter section 13, the water pipe will abut against the transition between the small diameter section 11 and the large diameter section 13 for position limiting. The installer then clamps the convex ring 21 with a clamping tool to deform the convex ring 21 toward the axial direction of the large diameter section 13. When the convex ring 21 is deformed, it also forces the O-ring 632 to be squeezed and deformed. The O-ring 632 can fill the gap between the straight pipe and the large diameter section 13, thereby improving the sealing performance and facilitating disassembly and assembly.
[0027] The nut joint 4 is used to connect with the valve. The nut joint 4 is specifically a hexagonal nut. The inner wall of the hexagonal nut is provided with an internal thread 42. The end of the internal thread 42 is provided with a limiting convex 41 extending toward the axis. Before the stainless steel joint pipe is assembled, the convex edge 3 on the small diameter section 11 has not been formed. The nut joint 4 is first sleeved on the small diameter section 11. After the sleeve is completed, the end of the small diameter section 11 is clamped by a flanging machine, so that the end of the small diameter end expands radially outward to form a convex edge 3, so that the limiting convex 41 cooperates with the convex edge 3 to limit the hexagonal nut from being separated from the small diameter section 11.
[0028] When the nut connector 4 is connected to the valve, the raw tape will be wound around the internal thread 52 of the nut connector 4, and a sealing groove 31 is provided on the bottom surface of the flange 3, and a sealing ring 32 is provided in the sealing groove 31. After the internal thread 42 of the nut connector 4 is connected to the external thread 51 of the valve connection section, a quick connection can be achieved, and it also has good leakage resistance.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0031] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.
Claims
1. A stainless steel joint pipe fitting, comprising a pipe body having a small diameter section and a large diameter section, characterized in that: The small diameter section and the large diameter section are transitionally connected by means of shrinking and reducing diameter. The small diameter section is sleeved with a movable nut joint and the end away from the large diameter section is bent integrally to form an outward-turned and annular convex edge. The nut joint is restricted to move freely between the large diameter section and the convex edge. The end of the large diameter section away from the small diameter section forms a clamping structure; a connector connected to the interior of the large diameter section is arranged on the side wall of the large diameter section.
2. The stainless steel joint pipe fitting according to claim 1, characterized in that: The connector is provided with an external thread at the end away from the large-diameter pipe section.
3. The stainless steel joint pipe fitting according to claim 1, characterized in that: The connector is provided with an internal thread at the end away from the large-diameter pipe section.
4. The stainless steel joint pipe fitting according to claim 1, characterized in that: There are two connectors, one of which is provided with an external thread on the end away from the large-diameter pipe section, and the other connector is provided with an internal thread on the end away from the large-diameter pipe section.
5. The stainless steel joint pipe fitting according to claim 1, characterized in that: The clamping structure comprises at least one convex ring arranged on the large diameter pipe section, and an O-ring having the same number and one-to-one correspondence with the convex rings, wherein the convex ring forms an inner arc groove in the large diameter pipe section for cooperating with the O-ring.
6. The stainless steel joint pipe fitting according to claim 1, characterized in that: A sealing groove is formed on the bottom surface of the convex edge, and a sealing ring is arranged in the sealing groove.
7. The stainless steel joint pipe fitting according to claim 1, characterized in that: The nut joint is a hexagonal nut, the inner wall of the hexagonal nut is provided with an internal thread, the end of the internal thread is provided with a limiting circular protrusion extending toward the axis, and the limiting circular protrusion cooperates with the convex edge to limit the hexagonal nut from detaching from the small diameter section.