Stainless steel pipe fitting stable in connection
By combining guide blocks, threaded posts, and elastic posts, the problem of unstable connections in traditional pipe fittings is solved, achieving stable connections of stainless steel pipe fittings and improving installation efficiency and safety.
Patent Information
- Application Number
- CN202520595206.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Traditional pipe fittings are unstable and prone to loosening due to vibration, thermal expansion and contraction, and fluid pressure fluctuations, which can affect the normal operation and safety of the pipeline system.
It employs multiple locking components and an elastic post structure. Through the cooperation of guide blocks and threaded posts, the insertion and reset of the locking posts are realized. Combined with the positioning groove of the elastic post and the snap-in of the protruding ball, the stability and convenience of the connection are ensured.
It improves the installation efficiency and maintenance convenience of the pipeline system, enhances the stability of the connection, prevents loosening due to vibration or external force, extends the service life and improves safety.
Smart Images
Figure CN223782284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline technology, and in particular to a stainless steel pipe fitting with stable connection. Background Technology
[0002] In today's various industrial sectors and building infrastructure construction, the stable operation of pipeline systems is of paramount importance. From the transportation of corrosive liquids in chemical production to the daily operation of building water supply and drainage systems, and the high-efficiency requirements in the field of energy transmission, reliable pipe fittings are indispensable. A type of stainless steel pipe fitting with stable connection has emerged, becoming a key component to ensure the efficient and safe operation of pipeline systems. Due to its excellent corrosion resistance and high strength, stainless steel material has obvious advantages in complex working conditions, and the design of pipe fittings with stable connection can meet the needs of pipeline systems to work stably for a long time in different environments, which is of great significance for improving the performance and reliability of the entire system.
[0003] In traditional pipe fitting technology, the common connection methods are welding and threaded connection. Welding is to melt and fuse the metal at the pipe joint at high temperature to form a strong connection. Threaded connection is to use the threads machined on the pipe to achieve the connection by rotating and tightening. Its principle is to rely on the friction and meshing between the threads to maintain the tightness of the connection.
[0004] A prominent problem with traditional pipe fittings is unstable connections. In practical applications, pipeline systems are often affected by various external forces, such as vibration, thermal expansion and contraction caused by temperature changes, and fluctuations in internal fluid pressure. For welded pipe fittings, fatigue cracks may appear at the weld joint due to long-term vibration, leading to loosening of the connection and subsequent leakage. For threaded pipe fittings, the friction between the threads will decrease under vibration or thermal expansion and contraction, causing the pipe fitting to gradually loosen. This not only affects the normal operation of the pipeline system and reduces transportation efficiency, but also leads to serious safety hazards. Therefore, a stainless steel pipe fitting with stable connections is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a stainless steel pipe fitting with stable connection, which aims to improve the problem of complex pipe fitting connection and difficulty in maintenance in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A stable stainless steel pipe fitting includes a connecting pipe one and a connecting pipe two. A connecting assembly is provided on one side wall of the connecting pipe. The connecting assembly is used to connect the connecting pipe one and the connecting ring one. Multiple locking components are provided inside the connecting assembly, and the locking components are distributed in a circumferential shape.
[0008] The locking assembly includes a guide block, a threaded post slidably connected to the inner wall of the guide block, a knob fixedly connected to one end of the threaded post, the knob being located on the outer wall of the guide block, a receiving groove being formed on the bottom outer wall of the threaded post, a plurality of locking posts being provided on the outer wall of the threaded post, the outer walls of the locking posts being slidably connected to the inner wall of the guide block, the locking posts being circumferentially distributed inside the guide block, one end of the locking post being slidably connected inside the connecting assembly, the other end of the locking post contacting the outer wall of the threaded post, and a reset assembly being provided on the outer wall of the locking post.
[0009] As a further description of the above technical solution:
[0010] The connecting assembly includes a first connecting ring and a second connecting ring. The inner wall of the first connecting ring is fixedly connected to the outer wall of the first connecting pipe, and the inner wall of the second connecting ring is fixedly connected to the outer wall of the second connecting pipe. The outer wall of the guide block is slidably connected inside the second connecting ring.
[0011] As a further description of the above technical solution:
[0012] The connecting ring has multiple guide holes on one side wall, which are distributed in a circular shape inside the connecting ring. The bottom of the outer wall of the guide block is slidably connected to the inner wall of the guide holes.
[0013] As a further description of the above technical solution:
[0014] The inner wall of the guide hole is provided with multiple locking holes, and the outer wall of the locking post is slidably connected to the inner wall of the locking holes.
[0015] As a further description of the above technical solution:
[0016] The reset assembly includes a limiting plate, the inner wall of which is fixedly connected to the outer wall of the locking post. A reset spring is sleeved on the outer wall of the locking post, one end of which is fixedly connected to the side wall of the limiting plate, and the other end of which is fixedly connected to the inside of the guide block.
[0017] As a further description of the above technical solution:
[0018] A threaded ring is fixedly connected to one side wall of the connecting pipe, and the threaded ring is slidably connected to the inner wall of the connecting pipe.
[0019] As a further description of the above technical solution:
[0020] Both the starting and ending ends of the threaded ring are fixedly connected to elastic columns, and each elastic column has a positioning groove on its outer wall.
[0021] As a further description of the above technical solution:
[0022] The inner wall of the connecting pipe is provided with a limiting groove, the outer wall of the elastic column is slidably connected to the inner wall of the limiting groove, and a plurality of protruding balls are fixedly connected to the inner wall of the limiting groove, the protruding balls being distributed in a circumferential shape inside the limiting groove.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the guide block is first passed through the connecting ring and inserted into the guide hole. Then, the knob is rotated, which drives the threaded column to rotate. Under the action of the thread, the threaded column moves the receiving groove inward. The displacement of the receiving groove compresses one end of the locking column into the locking hole. At the same time, the limiting plate is displaced and compresses the return spring, completing the final connection. This achieves the effect of simple installation and easy disassembly, solving the problem of complex and difficult maintenance of traditional pipe fittings, and improving the installation efficiency and maintenance convenience of the pipeline system.
[0025] 2. In this utility model, the two connecting pipes are first aligned so that the threaded ring at one end of the connecting pipe is aligned with the inner wall of the second connecting pipe. Then, the threaded ring is rotated so that the external thread on its outer wall engages with the internal thread on the inner wall of the connecting pipe, pushing the threaded ring downward. When the threaded ring moves to the bottom, the elastic post on its outer wall inserts into the limiting groove on the inner wall. At the same time, the positioning groove engages with the groove on the inner wall of the limiting groove and squeezes the protruding ball, effectively preventing the connection from loosening due to vibration or external force. This solves the problem of unstable connection of traditional pipe fittings and improves the safety and service life of the pipeline system. Attached Figure Description
[0026] Figure 1 This is a perspective view of a stainless steel pipe fitting with stable connection proposed in this utility model.
[0027] Figure 2 An exploded view of the connecting pipe structure of a stainless steel pipe fitting with stable connection proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of a guide block structure for a stable stainless steel pipe fitting proposed in this utility model.
[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0030] Figure 5 This is a schematic diagram of a threaded ring structure for a stable stainless steel pipe fitting proposed in this utility model.
[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0032] Legend:
[0033] 1. Connecting pipe one; 2. Connecting ring one; 3. Connecting pipe two; 4. Connecting ring two; 5. Threaded ring; 6. Guide hole; 7. Guide block; 8. Knob; 9. Threaded post; 10. Receiving groove; 11. Locking post; 12. Return spring; 13. Limiting plate; 14. Locking hole; 15. Elastic post; 16. Positioning groove; 17. Limiting groove; 18. Protruding ball. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] Reference Figure 1 - Figure 4 An embodiment of this utility model is provided: a stable stainless steel pipe fitting, including a connecting pipe 1 and a connecting pipe 2 3, both of which are made of stainless steel. A connecting component is provided on the side wall of the connecting pipe 1. The connecting component is used to connect the connecting pipe 1 and the connecting ring 2. Multiple locking components are provided inside the connecting component, and the locking components are distributed in a circumferential shape.
[0036] The locking assembly includes a guide block 7 made of carbon steel, which has good wear resistance and can withstand frequent friction during long-term use. A threaded post 9 is slidably connected to the inner wall of the guide block 7. A knob 8, made of engineering plastic, is fixedly connected to one end of the threaded post 9 for easy manual operation to control the rotation and displacement of the threaded post 9. The knob 8 is located on the outer wall of the guide block 7. A receiving groove 10 is formed on the bottom outer wall of the threaded post 9. During connection, the receiving groove 10 controls the movement of the locking post 11 by changing its own position, thereby realizing the locking and unlocking functions. Multiple locking mechanisms are provided on the outer wall of the threaded post 9. Column 11, the outer wall of locking column 11 is slidably connected to the inner wall of guide block 7. Locking columns 11 are distributed circumferentially inside guide block 7. One end of locking column 11 is slidably connected inside the connecting assembly, and the other end of locking column 11 contacts the outer wall of threaded column 9. A reset assembly is provided on the outer wall of locking column 11. The connecting assembly includes connecting ring 1 2 and connecting ring 2 4, both made of stainless steel, the same material as connecting pipe 1 1 and connecting pipe 2 3, with good corrosion resistance and strength. The inner wall of connecting ring 1 2 is fixedly connected to the outer wall of connecting pipe 1 1 by welding, and the inner wall of connecting ring 2 4 is fixedly connected to the outer wall of connecting pipe 2 3 by welding. The outer wall of the guide block 7 is slidably connected to the inside of the connecting ring 2. Multiple guide holes 6 are provided on the side wall of the connecting ring 2, serving to provide precise guidance and positioning for the guide block 7, ensuring that the guide block 7 can be accurately inserted into the connecting ring 2, thereby achieving precise docking of the connecting pipe 1 and the connecting pipe 2. The guide holes 6 are circumferentially distributed inside the connecting ring 2. The bottom of the outer wall of the guide block 7 is slidably connected to the inner wall of the guide hole 6. Multiple locking holes 14 are provided on the inner wall of the guide hole 6. The outer wall of the locking post 11 is slidably connected to the inner wall of the locking hole 14. The reset assembly includes a limiting plate 13, whose main function is to limit the displacement range of the locking post 11. This ensures that the locking pin 11 moves within a specified stroke, and at the same time, the locking pin 11 is reset under the action of the return spring 12. The inner wall of the limiting plate 13 is fixedly connected to the outer wall of the locking pin 11. The outer wall of the locking pin 11 is fitted with a return spring 12. Its function is to store elastic potential energy when the locking pin 11 is displaced by external force. When the external force disappears, the elastic potential energy is released to reset the locking pin 11, ensuring that the connection structure can quickly return to the initial state, which is convenient for subsequent connection or disassembly operations. One end of the return spring 12 is fixedly connected to the side wall of the limiting plate 13, and the other end of the return spring 12 is fixedly connected to the inside of the guide block 7.
[0037] Specifically, first, the worker picks up multiple guide blocks 7 so that they can pass through connecting ring 2 4. After the guide blocks 7 pass through connecting ring 2 4, the worker aligns the bottom of the guide blocks 7 with the guide hole 6 on the side wall of connecting ring 1 2, and then inserts the bottom of the guide blocks 7 into the guide hole 6. Next, the worker rotates the knob 8, and the rotation of the knob 8 causes the threaded column 9 to rotate as well. During the rotation of the threaded column 9, because the threads on its outer wall cooperate with the threaded grooves on the inner wall of the guide block 7, the threaded column 9 moves along the axial direction of the guide block 7 under the action of the threads. As the threaded post 9 moves inward toward the guide block 7, its bottom receiving groove 10 also moves inward. Before the receiving groove 10 moves inward, one end of the locking post 11 is located on the inner wall of the receiving groove 10. As the receiving groove 10 moves inward, the inner wall of the receiving groove 10 gradually squeezes one end of the locking post 11, causing the locking post 11 to slide outward in the radial direction on the inner wall of the guide block 7. As the threaded post 9 continues to move inward toward the guide block 7, the squeezing force of the receiving groove 10 on the locking post 11 continuously increases, and the other end of the locking post 11 is gradually squeezed into the connecting ring 2. In the locking hole 14 of the part, as the locking pin 11 slides outward, the limiting plate 13 fixedly connected to the outer wall of the locking pin 11 also moves outward along the inner wall of the guide block 7. During the displacement process, the limiting plate 13 causes the return spring 12 to be compressed, undergoing elastic deformation and storing elastic potential energy. When the other end of the locking pin 11 is fully inserted into the locking hole 14, the final connection and locking between the connecting pipe 1 and the connecting pipe 2 is completed. In this way, a reliable connection between the connecting pipe 1 and the connecting pipe 2 is achieved, and the entire connection process is simple to operate. When it is necessary to disassemble connecting pipe 1 and connecting pipe 3, the operator can rotate knob 8 in the opposite direction to move threaded post 9 outward to guide block 7. The outer wall of threaded post 9 will no longer press against locking post 11. The reset spring 12 releases elastic potential energy, pushing limit plate 13 and locking post 11 inward to guide block 7. Locking post 11 will exit from locking hole 14. The operator can then pull guide block 7 out of guide hole 6 to complete the disassembly of connecting pipe 1 and connecting pipe 3. This achieves the effect of easy installation and disassembly, meeting different needs in actual use.
[0038] Reference Figure 5 and Figure 6A threaded ring 5 is fixedly connected to the side wall of connecting pipe 1 by welding. The function of the threaded ring 5 is to achieve the initial connection and positioning of connecting pipe 1 and connecting pipe 2 3 through threaded engagement during the connection process. The threaded ring 5 is slidably connected to the inner wall of connecting pipe 2 3. The inner wall of connecting pipe 2 3 is machined with internal threads that match the outer wall of the threaded ring 5. Both the starting and ending ends of the threaded ring 5 are fixedly connected to elastic pillars 15. The elastic pillars 15 are made of rubber material and can undergo elastic deformation when subjected to external force, and can return to their original shape after the force is removed. The function of the elastic pillars 15 is to adapt to the relative position changes of connecting pipe 1 and connecting pipe 2 3 through their own elastic deformation during the connection process, and at the same time, to provide additional fastening force and buffering for the connection structure after the connection is completed. To prevent the connection from loosening due to vibration or external force, the outer wall of the elastic column 15 is provided with positioning grooves 16. The function of the positioning grooves 16 is to cooperate with the structure in the limiting groove 17 on the inner wall of the connecting pipe 2 3 to achieve accurate positioning and locking after the connecting pipe 1 and the connecting pipe 2 3 are connected. The inner wall of the connecting pipe 2 3 is provided with limiting grooves 17. The shape and position of the limiting grooves 17 match the elastic column 15 and the positioning grooves 16. It is used to accommodate the elastic column 15 and limit its movement trajectory. The outer wall of the elastic column 15 is slidably connected to the inner wall of the limiting groove 17. Multiple protruding balls 18 are fixedly connected to the inner wall of the limiting groove 17. Their function is to interact with the positioning groove 16 after the elastic column 15 is inserted into the limiting groove 17 to further enhance the firmness of the connection. The protruding balls 18 are distributed in a circumferential shape inside the limiting groove 17.
[0039] Specifically, the workers first move connecting pipe 1 and connecting pipe 2 to the connection position. Then, they adjust the side walls of connecting pipe 1 and connecting pipe 2 to be roughly aligned. Next, they ensure that the threaded ring 5 at one end of connecting pipe 1 is accurately aligned with the inner wall of connecting pipe 2, ensuring that the external thread of the threaded ring 5 and the internal thread of the inner wall of connecting pipe 2 can smoothly engage. Subsequently, the workers rotate connecting pipe 1, causing the threaded ring 5 to rotate synchronously. During the rotation of the threaded ring 5, the external thread on its outer wall meshes with the internal thread on the inner wall of connecting pipe 2. Under the helical action of the threads, the threaded ring 5 moves inward along the inner wall of connecting pipe 2. As the workers continue to rotate connecting pipe 1, the threaded ring 5 gradually moves inward along the inner wall of connecting pipe 2. When the threaded ring 5 moves to the bottom, that is, when the external thread on the outer wall of the threaded ring 5 is fully engaged with the internal thread on the inner wall of the connecting pipe 2 3, reaching the designed connection position, the elastic post 15 at the beginning and end of the external thread on the outer wall of the threaded ring 5 is exactly aligned with the limiting groove 17 at the beginning and end of the internal thread on the inner wall of the connecting pipe 2 3. The operator continues to fine-tune the position of the connecting pipe 1 1 so that the elastic post 15 can be accurately inserted into the limiting groove 17. During the process of the elastic post 15 being inserted into the limiting groove 17, the outer wall of the elastic post 15... As the positioning groove 16 gradually approaches the inner wall of the limiting groove 17, when the positioning groove 16 aligns with a specific groove on the inner wall of the limiting groove 17, the positioning groove 16 smoothly engages with the groove on the inner wall of the limiting groove 17 due to the elasticity of the elastic column 15. During engagement, the edge of the positioning groove 16 contacts and presses against the protruding ball 18 on the inner wall of the limiting groove 17. When pressed, the protruding ball 18 generates a certain reaction force, further enhancing the friction and fastening force between the positioning groove 16 and the inner wall of the limiting groove 17. In this way, the initial connection between connecting pipe 1 and connecting pipe 3 is completed. In subsequent use, due to the elasticity of the elastic column 15 and the cooperation between the positioning groove 16 and the protruding ball 18, the connection can be effectively prevented from loosening due to vibration or external force, ensuring that the stable stainless steel pipe fittings can operate reliably under various working conditions.
[0040] Working Principle: When using this stable stainless steel pipe fitting, the operator first aligns connecting pipe 1 and connecting pipe 2, aligning the threaded ring 5 at one end of connecting pipe 1 with the inner wall of connecting pipe 2, 3. Then, connecting pipe 1 is rotated, causing the threaded ring 5 to rotate. With the engagement of the external thread on the outer wall of the threaded ring 5 and the internal thread on the inner wall of connecting pipe 2, the threaded ring 5 moves downwards. When it reaches the bottom, the elastic post 15 at the beginning and end of the external thread on the outer wall of the threaded ring 5 inserts into the limiting groove 17 at the beginning and end of the internal thread on the inner wall of connecting pipe 2, 3. Then, the positioning groove 16 engages with the groove on the inner wall of the limiting groove 17, pressing the protruding ball 18. This completes the initial connection between connecting pipe 1 and connecting pipe 2, 3, effectively preventing loosening at the connection due to vibration or external force. After the connection is completed, the staff then inserts multiple guide blocks 7 through the connecting ring 2 4 and inserts the bottom into the guide hole 6. Then, they turn the knob 8. The rotation of the knob 8 causes the threaded post 9 to rotate on the inner wall of the guide block 7. Under the action of the threaded post 9, the threaded post 9 moves into the guide block 7. The displacement of the threaded post 9 causes the receiving groove 10 at its bottom to also move inward. The displacement of the receiving groove 10 causes one end of the locking post 11, which was originally located on its inner wall, to be squeezed outward. As the threaded post 9 continues to move, the other end of the locking post 11 is squeezed into the locking hole 14 inside the connecting ring 1 2. At the same time, the limiting plate 13 on the outer wall of the locking post 11 also moves. The return spring 12 is compressed by force, thus completing the final connection between the connecting tube 1 1 and the connecting tube 2 3, thereby achieving the effect of simple installation and easy disassembly.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stable stainless steel pipe fitting, comprising a first connecting pipe (1) and a second connecting pipe (3), characterized in that: The connecting pipe (1) is provided with a connecting component on its side wall. The connecting component is used to connect the connecting pipe (1) and the connecting ring (2). The connecting component is provided with a plurality of locking components, which are distributed in a circumferential shape. The locking assembly includes a guide block (7), a threaded post (9) is slidably connected to the inner wall of the guide block (7), a knob (8) is fixedly connected to one end of the threaded post (9), the knob (8) is located on the outer wall of the guide block (7), a receiving groove (10) is opened on the bottom outer wall of the threaded post (9), a plurality of locking posts (11) are provided on the outer wall of the threaded post (9), the outer wall of the locking posts (11) is slidably connected to the inner wall of the guide block (7), the locking posts (11) are distributed in a circumferential shape inside the guide block (7), one end of the locking post (11) is slidably connected to the inside of the connecting assembly, the other end of the locking post (11) is in contact with the outer wall of the threaded post (9), and a reset assembly is provided on the outer wall of the locking post (11).
2. The stainless steel pipe fitting with stable connection according to claim 1, characterized in that: The connecting assembly includes a first connecting ring (2) and a second connecting ring (4). The inner wall of the first connecting ring (2) is fixedly connected to the outer wall of the first connecting pipe (1). The inner wall of the second connecting ring (4) is fixedly connected to the outer wall of the second connecting pipe (3). The outer wall of the guide block (7) is slidably connected inside the second connecting ring (4).
3. The stainless steel pipe fitting with stable connection according to claim 2, characterized in that: The connecting ring (2) has multiple guide holes (6) on its side wall. The guide holes (6) are distributed in a circumferential shape inside the connecting ring (2). The bottom of the outer wall of the guide block (7) is slidably connected to the inner wall of the guide hole (6).
4. A stainless steel pipe fitting with stable connection according to claim 3, characterized in that: The inner wall of the guide hole (6) is provided with a plurality of locking holes (14), and the outer wall of the locking post (11) is slidably connected to the inner wall of the locking holes (14).
5. A stainless steel pipe fitting with stable connection according to claim 1, characterized in that: The reset assembly includes a limiting plate (13), the inner wall of the limiting plate (13) is fixedly connected to the outer wall of the locking post (11), and a reset spring (12) is sleeved on the outer wall of the locking post (11). One end of the reset spring (12) is fixedly connected to the side wall of the limiting plate (13), and the other end of the reset spring (12) is fixedly connected to the inside of the guide block (7).
6. A stainless steel pipe fitting with stable connection according to claim 1, characterized in that: A threaded ring (5) is fixedly connected to the side wall of the first connecting pipe (1), and the threaded ring (5) is slidably connected to the inner wall of the second connecting pipe (3).
7. A stainless steel pipe fitting with stable connection according to claim 6, characterized in that: The threaded ring (5) has elastic columns (15) fixedly connected to both the starting and ending ends of the thread, and the outer wall of each elastic column (15) has a positioning groove (16).
8. A stainless steel pipe fitting with stable connection according to claim 7, characterized in that: The inner wall of the connecting pipe (3) has a limiting groove (17), the outer wall of the elastic column (15) is slidably connected to the inner wall of the limiting groove (17), and a plurality of protruding balls (18) are fixedly connected to the inner wall of the limiting groove (17). The protruding balls (18) are distributed in a circumferential shape inside the limiting groove (17).