Pipeline connecting structure convenient to overhaul and replace
By introducing a resilient sealing structure and a snap-fit connection into the pipeline connection structure, the problems of low efficiency and leakage in pipeline maintenance and replacement in the prior art are solved, and automatic sealing and simplified disassembly and assembly operations are achieved.
Patent Information
- Application Number
- CN202520538098.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing pipeline connections require valves to be closed and liquids or gases to be purged during maintenance or replacement, resulting in low maintenance efficiency and a high risk of leaks.
A pipe connection structure including fixed connection components and movable connection components was designed. It adopts a resilient sealing structure and a resilient snap-fit connection to achieve automatic sealing of the pipe when it is disassembled, so as to avoid liquid or gas leakage.
It improves the efficiency and safety of pipeline maintenance and replacement, avoids liquid or gas leaks, and simplifies disassembly and assembly operations.
Smart Images
Figure CN223839957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection technology, and in particular to a pipe connection structure that is easy to inspect and replace. Background Technology
[0002] Pipelines are particularly common in daily life and industrial production. They are a common structure for transporting liquids or gases, typically composed of connecting structures assembled to form a sealed internal cavity for transporting liquids or gases. Existing pipe connections usually employ simple bolting or welding methods to connect multiple pipe sections into longer pipe structures. However, when it's necessary to inspect or replace a single section of pipe, it's often necessary to close the valves and drain any remaining liquid or gas before disassembling and replacing the pipe. This not only reduces maintenance efficiency but also easily leads to leaks of liquids or gases. Utility Model Content
[0003] Therefore, it is necessary to provide a pipe connection structure that is easy to inspect and replace, addressing the shortcomings of existing technologies.
[0004] A pipe connection structure for easy maintenance and replacement includes two sets of fixed connection assemblies and a movable connection assembly installed between the fixed connection assemblies. The fixed connection assembly includes a first pipe, a sealing ball, a connecting rod, a contact plate, and a telescopic spring. The first pipe has a conveying cavity, a sealing cavity, and a connecting cavity connected sequentially from left to right, wherein the diameter of the sealing cavity is smaller than the diameters of the conveying cavity and the connecting cavity. The sealing ball is located in the conveying cavity, and the contact plate and the telescopic spring are both located in the connecting cavity. The contact plate has a hollow design, and the two ends of the telescopic spring abut against the left end of the connecting cavity and the contact plate, respectively. The connecting rod passes through the sealing cavity, and its two ends are connected to the sealing ball and the contact plate, respectively. The movable connection assembly passes through the connecting cavity from the right end of the fixed connection assembly and abuts against the contact plate.
[0005] Furthermore, the movable connection assembly includes a second pipe and two sets of third pipes. The two sets of third pipes are respectively spirally connected to both ends of the second pipe, and the spiral directions of the two sets of third pipes are opposite to those of the second pipe. The two sets of third pipes are also respectively engaged and inserted into the connecting cavity of the first pipe and abut against the abutment piece.
[0006] Furthermore, the fixed connection assembly also includes a limiting block and a limiting spring. The first pipe has a corresponding limiting hole, and the third pipe has a corresponding limiting groove. The limiting hole communicates with the connecting cavity. The limiting block and the limiting spring are both installed within the limiting hole and are radially extendable. The inner end of the limiting hole can extend into the connecting cavity and engage with the limiting groove for limiting.
[0007] Furthermore, the fixed connection assembly also includes an unlocking ring, and the outer end of the limiting block is provided with an unlocking hole penetrating both sides. The unlocking ring is sleeved on the first pipe and located on the periphery of the connecting cavity. The unlocking ring is also provided with a rotating elongated hole, and an unlocking protrusion is provided inside the rotating elongated hole. The outer end of the limiting block passes through the rotating elongated hole, and the unlocking hole and the unlocking protrusion are correspondingly arranged.
[0008] Furthermore, the connecting cavity is also provided with a positioning groove extending into the opening, and a positioning strip is correspondingly provided on the outer wall of the third pipe, the positioning strip and the positioning groove being slidably engaged.
[0009] Furthermore, the sealing ball is also provided with a balance slider, and the conveying cavity is provided with a corresponding balance groove. The balance slider is engaged in the balance groove and can slide along the balance groove.
[0010] Furthermore, the second pipeline is also equipped with an air vent valve and a constant pressure valve that connect the inside and outside.
[0011] In summary, the beneficial effects of this utility model's convenient pipe connection structure are as follows: by designing an elastically sealing structure within the pipe connection structure, the pipe structure can achieve automatic sealing at the ends during disassembly, thereby effectively preventing liquid or gas leakage from the pipe and greatly facilitating pipe structure maintenance and replacement operations; the design of an elastic snap-fit connection structure between the fixed connection component and the movable connection component makes their assembly and disassembly operations easier and simpler; this utility model is highly practical and has significant potential for widespread application. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a pipe connection structure that facilitates maintenance and replacement according to the present invention.
[0013] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;
[0014] Figure 3 for Figure 2 Exploded view of the fixed connection component in the middle;
[0015] Figure 4 for Figure 2 A schematic diagram of the exploded structure of the active connection component. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.
[0017] In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0018] like Figures 1 to 4 As shown, this utility model provides a pipe connection structure 100 that is easy to inspect and replace, which includes two sets of fixed connection components 10 and a movable connection component 20 installed between the fixed connection components 10. It will be understood that this utility model also includes several sealing structures and fixing structures, which are all conventional technologies in the field and will not be described in detail here.
[0019] The fixed connection assembly 10 includes a first pipe 11, a sealing ball 12, a connecting rod 13, an abutment piece 14, and a telescopic spring 15. The first pipe 11 contains a conveying cavity 111, a sealing cavity 112, and a connecting cavity 113 connected sequentially from left to right, wherein the diameter of the sealing cavity 112 is smaller than the diameters of the conveying cavity 111 and the connecting cavity 113. The sealing ball 12 is located within the conveying cavity 111. The abutment piece 14 and the telescopic spring 15 are both located within the connecting cavity 113, and the abutment piece 14 has a hollow design. The two ends of the telescopic spring 15 abut against the left end of the connecting cavity 113 and the abutment piece 14, respectively. The connecting rod 13 passes through the sealing cavity 112, and its two ends are connected to the sealing ball 12 and the abutment piece 14, respectively. The movable connection assembly 20 passes through the right end of the fixed connection assembly 10 into the connecting cavity 113 and abuts against the abutment piece 14.
[0020] When installing the connecting pipe structure, first, the fixed connecting component 10 is installed and connected to the adjacent ends of two ordinary pipes. Then, the two ends of the movable connecting component 20 are respectively and sealedly engaged with the fixed connecting component 10. As the end of the movable connecting component 20 gradually extends into the connecting cavity 113 and abuts against the abutment piece 14, the sealing ball 12 in the conveying cavity 111 will be simultaneously pushed away from the port of the sealing cavity 112, thus connecting the conveying cavity 111 and the sealing cavity 112. When disassembling the pipe structure, simply pull the movable connecting component 20 out of the connecting cavity 113. Under the restoring force of the telescopic spring 15, the sealing ball 12 will gradually approach the port of the sealing cavity 112 until it is completely sealed.
[0021] The added sealing structure can automatically seal the pipeline during disassembly, eliminating the need for operators to close pipeline valves or drain liquids or gases from the pipeline, thus preventing leaks. This not only improves the efficiency of pipeline disassembly, maintenance, and replacement but also significantly enhances the safety and reliability of the operation.
[0022] The movable connecting assembly 20 includes a second pipe 21 and two sets of third pipes 22. The two sets of third pipes 22 are spirally connected to both ends of the second pipe 21, and the spiral directions of the two sets of third pipes 22 and the second pipe 21 are opposite. The two sets of third pipes 22 are also respectively engaged and inserted into the connecting cavity 113 of the first pipe 11 and abut against the abutment piece 14. Because the spiral directions of the two sets of third pipes 22 are opposite, when disassembling the pipe connection structure, only the second pipe 21 needs to be rotated to cause the two sets of third pipes 22 to retract synchronously, further optimizing the convenience of pipe disassembly operations.
[0023] The fixed connection assembly 10 also includes a limiting block 16 and a limiting spring 17. The first pipe 11 has a corresponding limiting hole 114, and the third pipe 22 has a corresponding limiting groove 221. The limiting hole 114 communicates with the connecting cavity 113. The limiting block 16 and the limiting spring 17 are both installed within the limiting hole 114 and are radially extendable. The inner end of the limiting hole 114 extends into the connecting cavity 113 and engages with the limiting groove 221 for limiting. When the third pipe 22 extends into the connecting cavity 113, the limiting block 16 and the limiting spring 17 automatically limit and fix it. When the pipe structure needs to be disassembled, the limiting block 16 can be pulled to release the limitation, allowing the third pipe 22 to be easily pulled out of the connecting cavity 113. The snap-fit connection method further optimizes the convenience of pipe disassembly operations.
[0024] The fixed connection assembly 10 also includes an unlocking ring 18, and the outer end of the limiting block 16 is provided with an unlocking hole 161 penetrating both sides. The unlocking ring 18 is sleeved on the first pipe 11 and located on the periphery of the connecting cavity 113. The unlocking ring 18 is also provided with a rotating elongated hole 181, and an unlocking protrusion 182 is provided inside the rotating elongated hole 181. The outer end of the limiting block 16 passes through the rotating elongated hole 181, and the unlocking hole 161 and the unlocking protrusion 182 are correspondingly arranged. When the operator disassembles the pipe structure, pulling the limiting block 16 to release the limit is still cumbersome. However, the added unlocking ring 18 only needs to be rotated relative to the first pipe 11 to simultaneously release the limit of multiple sets of limiting blocks 16, further optimizing the convenience of pipe disassembly operations.
[0025] The connecting cavity 113 is further provided with a positioning groove 113a extending into the opening, and a corresponding positioning slide 222 is provided on the outer wall of the third pipe 22. The positioning slide 222 and the positioning groove 113a can be slidably engaged. During the process of disassembling the pipe structure by rotating the second pipe 21, the positioning groove 113a and the positioning slide 222 can limit the relative positioning between the first pipe 11 and the third pipe 22, preventing the third pipe 22 from affecting its spiral contraction effect by rotating synchronously with the second pipe 21.
[0026] The sealing ball 12 is also provided with a balance slider 121, and a corresponding balance groove 111a is provided in the conveying cavity 111. The balance slider 121 is engaged in the balance groove 111a and can slide along the balance groove 111a. The structure of the balance slider 121 and the balance groove 111a ensures that the sealing ball 12 always maintains a positional correspondence with the sealing cavity 112, avoiding the problem that the sealing ball 12 may become deflected due to the pressure of liquid or gas inside the pipeline, thus affecting its sealing effect on the sealing cavity 112.
[0027] The second pipe 21 is also equipped with an internal and external vent valve 211 and a constant pressure valve 212. The vent valve 211 can vent the liquid or gas remaining in the movable connecting component 20 during the disassembly of the pipe structure, further avoiding leakage problems during the disassembly process. The constant pressure valve 212 facilitates the pressure balance between the inside of the movable connecting component 20 and the outside during the venting of liquid or gas, avoiding the problem of liquid or gas not being able to be vented or the movable connecting component 20 being difficult to separate from the fixed connecting component 10.
[0028] In summary, the beneficial effects of this utility model's convenient pipe connection structure 100 are as follows: by designing an elastic sealing structure within the pipe connection structure, the pipe structure can achieve automatic sealing at the ends during disassembly, thereby effectively preventing liquid or gas leakage from the pipe and greatly facilitating pipe structure maintenance and replacement operations; the design of an elastic snap-fit connection structure between the fixed connection component 10 and the movable connection component 20 makes their assembly and disassembly operations easier and simpler; this utility model is highly practical and has significant potential for widespread application.
[0029] The embodiments described above illustrate only one implementation of the utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.
Claims
1. A pipe connection structure that facilitates maintenance and replacement, characterized in that: The device includes two sets of fixed connection assemblies and a movable connection assembly installed between the fixed connection assemblies. The fixed connection assembly includes a first pipe, a sealing ball, a connecting rod, a contact plate, and a telescopic spring. The first pipe has a conveying cavity, a sealing cavity, and a connecting cavity connected sequentially from left to right, wherein the diameter of the sealing cavity is smaller than the diameter of the conveying cavity and the connecting cavity. The sealing ball is located in the conveying cavity, and the contact plate and the telescopic spring are both located in the connecting cavity. The contact plate has a hollow design, and the two ends of the telescopic spring abut against the left end of the connecting cavity and the contact plate, respectively. The connecting rod passes through the sealing cavity and its two ends are connected to the sealing ball and the contact plate, respectively. The movable connection assembly passes through the connecting cavity from the right end of the fixed connection assembly and abuts against the contact plate.
2. The pipe connection structure for easy maintenance and replacement as described in claim 1, characterized in that: The movable connection assembly includes a second pipe and two sets of third pipes. The two sets of third pipes are respectively spirally connected to both ends of the second pipe, and the spiral directions of the two sets of third pipes are opposite to those of the second pipe. The two sets of third pipes are also respectively engaged and inserted into the connecting cavity of the first pipe and abut against the abutment piece.
3. The pipe connection structure for easy maintenance and replacement as described in claim 2, characterized in that: The fixed connection assembly also includes a limiting block and a limiting spring. The first pipe is provided with a corresponding limiting hole, and the third pipe is provided with a corresponding limiting groove. The limiting hole is connected to the connecting cavity. The limiting block and the limiting spring are both installed in the limiting hole and can be radially extended and retracted. The inner end of the limiting hole can extend into the connecting cavity and engage with the limiting groove for limiting.
4. The pipe connection structure for easy maintenance and replacement as described in claim 3, characterized in that: The fixed connection assembly also includes an unlocking ring, and the outer end of the limiting block is provided with an unlocking hole that passes through both sides; the unlocking ring is sleeved on the first pipe and located on the periphery of the connecting cavity, and the unlocking ring is also provided with a rotating elongated hole, and the rotating elongated hole is also provided with an unlocking protrusion; the rated outer end of the limiting block passes through the rotating elongated hole, and the unlocking hole and the unlocking protrusion are correspondingly set.
5. The pipe connection structure for easy maintenance and replacement as described in claim 2, characterized in that: The connecting cavity is also provided with a positioning groove extending into the opening, and a positioning strip is provided on the outer wall of the third pipe, and the positioning strip and the positioning groove can be slidably engaged.
6. The pipe connection structure for easy maintenance and replacement as described in claim 1, characterized in that: The sealing ball is also provided with a balance slider, and the conveying cavity is provided with a corresponding balance groove. The balance slider is engaged in the balance groove and can slide along the balance groove.
7. The pipe connection structure for easy maintenance and replacement as described in claim 2, characterized in that: The second pipeline is also equipped with an air vent valve and a constant pressure valve that connect the inside and outside.