Clamping and pressing type quick connection construction device for secondary water supply pipeline
By combining the structure of guide components and driven components, and combining the design of crimping rings and clamping conical rings, the problem of pipe connection in narrow spaces is solved, and efficient and stable construction of secondary water supply pipelines is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JILIN HONGXING CONSTR GRP CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-04-10
AI Technical Summary
In confined spaces, traditional clamp-on connection tools are difficult to operate, resulting in low efficiency in the construction of secondary water supply pipeline connections.
The system employs a combination of guide and driven components. The guide provides a guiding path, allowing the driven component to move along the axis. Combined with the matching design of the crimping ring and the clamping conical ring, it achieves stable crimping of the pipeline and reduces reliance on large hydraulic tools.
It achieves efficient pipe connection in confined spaces, improves construction stability and efficiency, reduces equipment complexity and cost, and reduces rework rate and physical labor consumption.
Smart Images
Figure CN121828520A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipeline connection technology, and in particular to a press-fit quick connection construction device for secondary water supply pipelines. Background Technology
[0002] The connection between secondary water supply pipelines refers to the key process of combining individual standard pipes from the factory into a continuous, closed water supply network through reliable interface methods, thereby achieving a stable water supply from intermediate water tanks or pressurization equipment to end users. Common connection methods include traditional welding and flange connections, as well as press-fit connections, which have become widely used in recent years. Among them, press-fit connections use special tools to radially shrink the pipe fittings, creating a mechanical lock and seal between the pipe and the fittings.
[0003] Secondary water supply systems are typically located in narrow pipe shafts, ceiling mezzanines, or corners of equipment rooms, where construction space is extremely limited. Traditional crimp connections require large tools such as specialized hydraulic crimping wrenches. These tools are not only bulky and cumbersome, but also require sufficient opening stroke and operating space to radially compress the pipe fittings. In confined spaces, hydraulic crimping wrenches are often difficult to insert properly, or even if they are forced in, they cannot complete an effective crimping action, making the connection work inconvenient and resulting in low construction efficiency. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a press-fit quick connection construction device for secondary water supply pipelines, which can complete the connection of pipelines in a confined space without the need for large hydraulic tools, thereby improving construction efficiency.
[0005] The objective of this invention is achieved through the following technical solution:
[0006] A clamping connection construction device for secondary water supply pipelines includes:
[0007] A connector body having a pipe receiving cavity that extends through the connector body;
[0008] At least two guide members are provided on the outer wall of the connector body and extend along the axis of the connector body;
[0009] At least two driven members, and a plurality of said driven members are movably connected to a plurality of said guide members in a one-to-one correspondence, so that said driven members can move relative to the connecting body along the extension direction of said guide members;
[0010] At least two crimping rings are fitted onto the outer wall of the connector body. The crimping rings are connected to the driven members one by one and move with the driven members.
[0011] At least two clamping conical rings are provided, and multiple clamping conical rings are matched one-to-one with multiple crimping rings. Each clamping conical ring has a connecting end and a pressing end. The connecting end is connected to the connector body, and the pressing end is connected to a pressing part for pressing the pipe. The outer conical surface of the clamping conical ring extends in a wider diameter direction from the connecting end to the pressing end. The connecting end and the pressing end of the crimping ring, the clamping conical ring located on the same side as the crimping ring, are distributed sequentially along the axis of the connector body so that when the crimping ring moves, it can squeeze the conical surface of the clamping conical ring until the pressing part presses the pipe.
[0012] Furthermore, one of the two guide members is a first external thread and the other is a second external thread, with the thread directions of the first and second external threads being opposite; the driven member is a rotating ring, with one of the two rotating rings threadedly connected to the first external thread and the other threadedly connected to the second external thread.
[0013] Furthermore, the pressure-fit connection construction device for a secondary water supply pipeline also includes an abutment ring, which is sleeved on the circumferential surface of the connector body and located in the middle of the connector body. The first external thread and the second external thread are located on opposite sides of the abutment ring and are respectively connected to the abutment ring. The abutment ring is used for the two rotating rings to abut against each other.
[0014] Furthermore, a snap-fit conical ring is connected to one end of the crimping ring away from the rotating ring. The taper direction of the snap-fit conical ring is opposite to that of the clamping conical ring, and it is used to press the clamping conical ring.
[0015] Furthermore, the end of the snap-fit conical ring away from the crimping ring is provided with annular teeth. The snap-fit conical ring moves with the crimping ring toward the pressing end and squeezes the snap-fit conical ring until the pressing part presses the pipe, at which point the annular teeth snap into the end of the pressing end.
[0016] Furthermore, the circumferential surface of the clamping conical ring is provided with an annular tooth groove, which corresponds to the clamping part; the end of the clamping conical ring away from the clamping ring is provided with an annular locking tooth, and the clamping conical ring moves with the clamping ring toward the clamping end and squeezes the clamping conical ring until the clamping part clamps the pipe, at which point the annular locking tooth engages with the annular tooth groove.
[0017] Furthermore, the pressure-fit connection construction device for a secondary water supply pipeline also includes a pipe sleeve ring, which is fitted onto the connector body and located within the pipeline receiving cavity. The pipe sleeve ring is used to fit onto the inner wall of the pipeline.
[0018] Furthermore, the clamping part is a conical tooth, and the pipe sleeve ring is provided with an annular groove, which is engaged with the conical tooth after the pipe is clamped.
[0019] Furthermore, the inner conical surface of the clamping conical ring is provided with an annular groove, which is located between the clamping part and the connecting end; the clamping connection construction device for a secondary water supply pipeline also includes a sealing ring, which is installed in the annular groove.
[0020] Furthermore, the clamping conical ring is provided with a plurality of straight through grooves, which penetrate along the ring wall of the clamping conical ring, and the plurality of straight through grooves are evenly distributed along the circumferential surface of the clamping conical ring.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0022] 1. Based on the guide members located on the outer wall of the connector body and extending along the axis of the connector body, multiple driven members are movably connected to multiple guide members in a one-to-one correspondence, so that the driven members can move relative to the connector body along the extension direction of the guide members. The guide members provide a guiding path for the movement of the driven members, ensuring that the subsequent crimping action can be strictly performed along the axial direction, avoiding the need for repeated tool adjustments or repositioning due to force direction deviation during the crimping process. Even in a small operating area, construction personnel can complete the crimping with the guidance of the guide structure, reducing rework rate, improving the stability of the crimping operation, and improving construction efficiency. The driven members, through the sliding cooperation with the guide members on the connector body, can move smoothly and steadily along the predetermined trajectory under the drive of external force, thereby transmitting the externally input driving force to the crimping ring, ensuring the accurate execution of the crimping action. This replaces the hydraulic cylinders or high-power electric pumps required for traditional crimping. Construction personnel only need to use ordinary wrenches or manual rotating tools to drive the driven members to move, improving the convenience of pipeline connection operations.
[0023] 2. Based on the crimping ring being fitted onto the outer wall of the connector body, the crimping ring is connected to the driven component in a one-to-one correspondence and moves with the driven component. The crimping ring is tightly fitted around the outer circumference of the connector body, and its inner diameter maintains a reasonable clearance fit with the outer diameter of the connector body. This ensures that the crimping ring can move freely axially while restricting its radial wobble. When the driven component moves along the guide, the crimping ring, which is fixedly connected to it, moves synchronously, directly and evenly transmitting the driving force received from the driven component to the force-bearing surface of the crimping conical ring. This reduces intermediate transmission links and ensures that the crimping force can be concentrated and accurately applied to the location requiring tightening, thereby shortening the construction time of a single joint and improving the overall efficiency of pipeline construction.
[0024] 3. Based on the one-to-one matching of multiple clamping conical rings and multiple crimping rings, the clamping conical ring has a connecting end and a clamping end. The connecting end is connected to the connector body, and the clamping end is connected to a clamping part used to clamp the pipe. The outer conical surface of the clamping conical ring extends in diameter from the connecting end to the clamping end. The connecting end of the clamping conical ring is fixedly connected to the connector body to form a stable support point. Its outer conical surface gradually increases in diameter from the connecting end to the clamping end, forming a continuous inclined working surface. When the crimping ring moves axially and contacts the outer conical surface, according to the inclined plane principle, the small axial thrust applied by the crimping ring is amplified into a large radial clamping force acting on the clamping end, causing the clamping part to contract evenly and tightly bite the outer wall of the pipe. There is no need for bulky hydraulic clamps or electric pumps to provide huge power. Sufficient clamping force can be obtained by manual rotation to complete the pipe locking, reducing the complexity and cost of construction equipment.
[0025] 4. Based on the crimping ring, the connecting end and the clamping end of the clamping conical ring located on the same side of the crimping ring are sequentially distributed along the axis of the connector body. This allows the crimping ring to squeeze the conical surface of the clamping conical ring until the clamping part clamps the pipe when it moves, forming the shortest force transmission path from the force application end to the clamping end. This allows the entire crimping action to be completed in a continuous and smooth stroke, which significantly reduces the axial length of the device. This allows it to easily reach into deep and narrow pipe wells, pipe wells close to wall corners, or low ceiling mezzanines for operation, without the need to remove obstacles or enlarge the operating opening to accommodate tools. At the same time, the sequentially distributed force transmission structure ensures that the construction personnel only need to apply continuous force in one direction to push the crimping ring to act sequentially on the connecting end and the clamping end of the clamping conical ring, causing the clamping part to gradually contract and finally clamp the pipe. The whole process does not require step-by-step operation, repeated adjustment of tool position, or replacement of crimping joints as in traditional crimping methods, improving the installation efficiency of secondary water supply pipelines and reducing the physical exertion and safety risks caused by repeated maneuvering in confined spaces. Attached Figure Description
[0026] Figure 1 This is a structural schematic diagram of a pressure-fit connection construction device for a secondary water supply pipeline according to the present invention;
[0027] Figure 2 for Figure 1 The cross-sectional view shown;
[0028] Figure 3 for Figure 2 A magnified view of point A in the middle.
[0029] In the diagram: 1. Connector body; 2. Guide component; 3. Driven component; 4. Crimping ring; 5. Clamping conical ring; 51. Connecting end; 52. Clamping end; 6. Clamping part; 7. Abutment ring; 8. Clamping conical ring; 9. Annular retaining tooth; 10. Annular tooth groove; 11. Pipe sleeve ring; 12. Annular groove; 13. Sealing ring; 14. Straight groove; 15. Annular retaining groove; 16. Pipe. Detailed Implementation
[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0033] See Figures 1-3 The implementation methods of all embodiments of the present invention are as follows:
[0034] A press-fit connection construction device for a secondary water supply pipeline 16 includes a connector body 1, at least two guide members 2, at least two driven members 3, at least two crimping rings 4, and at least two press-fit conical rings 5.
[0035] The connector body 1 has a cavity for receiving the pipe 16, which extends through the connector body 1. Specifically, the connector body 1 is usually made of stainless steel or copper alloy and has a hollow tubular structure with a smooth inner wall to ensure smooth insertion of the pipe 16. The cavity for receiving the pipe 16 extends through the entire connector body 1, which facilitates the insertion of two pipes 16 to be connected from both ends and their docking in the middle of the cavity.
[0036] The guide member 2 is located on the outer wall of the connector body 1 and extends along the axis of the connector body 1. Specifically, the guide member 2 can be a cuboid protrusion welded to the outer wall of the connector body 1, or a dovetail guide rail formed directly on the outer wall of the connector body 1 by machining, or an external threaded guide rail (for rotational displacement), etc. Its length direction (or final displacement direction) is parallel to the axis of the connector body 1, providing precise movement guidance for subsequent components.
[0037] Multiple driven members 3 are movably connected to multiple guide members 2 in a one-to-one correspondence, so that the driven members 3 can move relative to the connecting body 1 along the extension direction of the guide member 2. Specifically, the driven member 3 can be a slider with a groove at the bottom that matches the shape of the guide member 2 or a ring with an internal thread that matches the external thread guide rail. The driven member 3 is engaged on the guide member 2 and can slide smoothly back and forth along the direction of the guide member 2 when pushed or pulled by an external force.
[0038] The crimping ring 4 is fitted onto the outer wall of the connector body 1. The crimping ring 4 is connected to the driven member 3 in a one-to-one correspondence and moves with the driven member 3. Specifically, the crimping ring 4 is a metal ring that surrounds the outside of the connector body 1. It is fixedly connected to the driven member 3 below by bolts or welding. When the driven member 3 moves, it will drive the crimping ring 4 to move axially synchronously on the outer wall of the connector body 1.
[0039] Multiple clamping conical rings 5 are matched one-to-one with multiple crimping rings 4. Each clamping conical ring 5 has a connecting end 51 and a clamping end 52. The connecting end 51 is connected to the connector body 1, and the clamping end 52 is connected to a clamping part 6. The clamping part 6 is used to clamp the pipe 16. The outer conical surface of the clamping conical ring 5 extends in diameter from the connecting end 51 to the clamping end 52. Specifically, the clamping conical ring 5 is generally trumpet-shaped. Its small-diameter connecting end 51 is fixed to the end of the connector body 1 by means of threads or grooves. The inner side of the large-diameter clamping end 52 is embedded with a clamping ring with serrations as the clamping part 6. The diameter of the outer conical surface of the entire ring gradually increases from the connecting end 51 to the clamping end 52, forming an inclined compression surface.
[0040] It is worth noting that the materials of the clamping conical ring 5 and the connector body 1 are the same as those of ordinary connectors, which are deformable metal materials, such as stainless steel, carbon steel or aluminum alloy.
[0041] The crimping ring 4, the connecting end 51 and the clamping end 52 of the clamping conical ring 5 located on the same side as the crimping ring 4 are distributed sequentially along the axis of the connector body 1, so that when the crimping ring 4 moves, it can squeeze the conical surface of the clamping conical ring 5 until the clamping part 6 clamps the pipe 16. Specifically, on the same side of the connector body 1, the crimping ring 4 is located on the outermost or innermost side, followed by the connecting end 51 and the clamping end 52 of the clamping conical ring 5. When the crimping ring 4 is driven by the driven member 3 to move towards the middle of the connector body 1, its inner wall will contact the outer conical surface of the clamping conical ring 5 and apply pressure, forcing the clamping conical ring 5 to undergo elastic deformation, thereby causing the clamping part 6 on the inner side of the clamping end 52 to radially contract and firmly bite the outer wall of the inserted pipe 16.
[0042] The working principle of the compression connection construction device for a secondary water supply pipeline 16 of the present invention is as follows:
[0043] First, the pipe 16 to be connected is inserted into the pipe 16 receiving cavity of the connector body 1 from both ends. Then, the driven member 3 is driven by external force. Since the driven member 3 is movably connected to the guide member 2 set on the outer wall of the connector body 1, the driven member 3 can move along the extension direction of the guide member 2 and simultaneously drive the crimping ring 4 fixedly connected to it to move towards the middle of the connector body 1. As the crimping ring 4 moves axially, its inner wall will squeeze the outer conical surface of the clamping conical ring 5 located on the same side. Since the connecting end 51 of the clamping conical ring 5 is fixed to the connector body 1, and its outer conical surface extends in diameter along the connecting end 51 towards the clamping end 52, when the crimping ring 4 applies pressure, it will force the clamping conical ring 5 to produce radial contraction deformation, so that the clamping part 6 connected to the clamping end 52 firmly clamps the outer wall of the pipe 16 radially, and finally completes the sealing and fixed connection of the pipe 16.
[0044] Obviously, based on the guide member 2 being located on the outer wall of the connector body 1 and extending along the axis of the connector body 1, multiple driven members 3 are movably connected to multiple guide members 2 in a one-to-one correspondence, so that the driven members 3 can move relative to the connector body 1 along the extension direction of the guide member 2. The guide member 2 provides a guiding path for the movement of the driven members 3, ensuring that the subsequent crimping action can be carried out strictly along the axial direction, avoiding the need for repeated tool adjustments or repositioning due to force direction deviation during the crimping process. Even in a small operating area, construction personnel can rely on the guide structure to achieve efficient operation. The guide element completes the crimping process, reducing rework and improving the stability of the crimping operation, while also increasing construction efficiency. The sliding fit between the driven part 3 and the connecting part body 1 via the guide element 2 allows the driven part 3 to move smoothly and steadily along the predetermined trajectory under external force, thereby transmitting the external driving force to the crimping ring 4, ensuring the accurate execution of the crimping action. This replaces the hydraulic cylinder or high-power electric pump required for traditional crimping, and construction personnel only need to use an ordinary wrench or manual rotating tool to drive the driven part 3 to move, improving the convenience of the pipe 16 connection operation.
[0045] The crimping ring 4 is fitted onto the outer wall of the connector body 1, and is connected to the driven member 3 in a one-to-one correspondence. The crimping ring 4 moves with the driven member 3, and is tightly fitted around the outer circumference of the connector body 1. A reasonable clearance fit is maintained between its inner diameter and the outer diameter of the connector body 1, ensuring that the crimping ring 4 can move freely axially while limiting its radial wobble. When the driven member 3 moves along the guide member 2, the crimping ring 4, which is fixedly connected to it, moves synchronously, directly and evenly transmitting the driving force received from the driven member 3 to the force-bearing surface of the clamping conical ring 5. This reduces intermediate transmission links and ensures that the crimping force can be concentrated and accurately applied to the location requiring clamping, thereby shortening the construction time of a single joint and improving the overall efficiency of the pipeline 16 construction.
[0046] Based on the one-to-one matching of multiple clamping conical rings 5 and multiple crimping rings 4, the clamping conical ring 5 has a connecting end 51 and a pressing end 52. The connecting end 51 is connected to the connector body 1, and the pressing end 52 is connected to a pressing part 6. The pressing part 6 is used to press the pipe 16. The outer conical surface of the clamping conical ring 5 extends in diameter from the connecting end 51 to the pressing end 52. The connecting end 51 of the clamping conical ring 5 is fixedly connected to the connector body 1 to form a stable support point. Its outer conical surface gradually expands in diameter from the connecting end 51 to the pressing end 52 to form a continuous inclined working surface. When the crimping ring 4 moves axially and contacts the outer conical surface, according to the principle of inclined plane, the small axial thrust applied by the crimping ring 4 is amplified into a large radial clamping force acting on the clamping end 52, so that the clamping part 6 contracts evenly and tightly bites the outer wall of the pipe 16. There is no need for bulky hydraulic clamps or electric pumps to provide huge power. Sufficient crimping force can be obtained by manual rotation to lock the pipe 16, reducing the complexity and cost of construction equipment.
[0047] Based on the crimping ring 4, the connecting end 51 and the clamping end 52 of the clamping conical ring 5 located on the same side of the crimping ring 4 are distributed sequentially along the axis of the connector body 1, so that when the crimping ring 4 moves, it can squeeze the conical surface of the clamping conical ring 5 until the clamping part 6 clamps the pipe 16, forming the shortest force transmission path from the force application end to the clamping end 52, so that the entire crimping action is completed in a continuous and smooth stroke. This greatly reduces the axial length of the device, allowing it to easily reach into deep and narrow pipe wells, pipe wells 16 close to the corner of the wall, or low ceiling mezzanines for operation, without having to remove obstacles or enlarge the operating opening to accommodate tools. Meanwhile, the sequentially distributed force transmission structure ensures that construction personnel only need to apply force continuously in one direction to push the crimping ring 4 to act sequentially on the connecting end 51 and the clamping end 52 of the clamping conical ring 5, so that the clamping part 6 gradually contracts and finally hugs the pipe 16. The whole process does not require step-by-step operation, repeated adjustment of tool position or replacement of crimping joint as in traditional crimping methods, which improves the installation efficiency of the secondary water supply pipe 16 and reduces the physical exertion and safety risks caused by repeated maneuvering in a confined space.
[0048] Preferably, one of the two guide members 2 is a first external thread and the other is a second external thread, with the thread directions of the first and second external threads being opposite. The driven member 3 is a rotating ring, with one of the two rotating rings threadedly connected to the first external thread and the other threadedly connected to the second external thread. Specifically, the outer walls of the connector body 1 are respectively machined with a first external thread and a second external thread with opposite directions of rotation, for example, the left end is a left-hand thread and the right end is a right-hand thread; the inner walls of the two rotating rings are respectively machined with corresponding internal threads, which are screwed onto the external threads on the corresponding sides. When the construction personnel rotate the two rotating rings in sequence, due to the opposite directions of the threads, the two rotating rings will move towards each other or away from each other along the axis of the connector body 1, thereby synchronously driving the crimping rings 4 on both sides to squeeze the clamping conical ring 5, realizing synchronous crimping of the pipes 16 on both sides, improving construction efficiency and ensuring uniform crimping force.
[0049] Preferably, a crimping connection construction device for a secondary water supply pipe 16 further includes an abutment ring 7. The abutment ring 7 is sleeved on the circumferential surface of the connector body 1 and located in the middle of the connector body 1. The first external thread and the second external thread are located on opposite sides of the abutment ring 7 and are respectively connected to the abutment ring 7. The abutment ring 7 is used for the two rotating rings to abut against each other. Specifically, the abutment ring 7 is an annular boss or independent retaining ring fixedly fitted in the middle of the connector body 1. Its two end faces serve as the initial abutment positions of the two rotating rings before the start of the crimping. During construction, the two rotating rings are first rotated to fit tightly against the two end faces of the abutment ring 7. Using this as a unified starting point, the two rotating rings are then rotated simultaneously, causing them to move backward along the opposite threads towards both ends of the connector body 1, thereby driving the crimping ring 4 to press and crimp the conical ring 5. Since both rotating rings move outward from the common reference point of the abutment ring 7 and have the same thread pitch, their displacement strokes remain consistent, ensuring that the clamping degree of the two clamping conical rings 5 is exactly the same, thus achieving synchronous and uniform clamping connection at both ends of the pipe 16.
[0050] Preferably, the end of the crimping ring 4 furthest from the rotating ring is connected to a snap-fit conical ring 8. The taper direction of the snap-fit conical ring 8 is opposite to that of the snap-fit conical ring 5, and it is used to press the snap-fit conical ring 5. Specifically, the crimping ring 4 extends or is fixedly connected to a snap-fit conical ring 8 with an inner conical surface ring structure on the side facing the end of the pipe 16. Its inner diameter gradually decreases in the direction away from the rotating ring, forming a mating conical surface with an inclination direction opposite to that of the outer conical surface of the snap-fit conical ring 5. When the rotating ring drives the crimping ring 4 to move toward the clamping conical ring 8, the inner conical surface of the clamping conical ring 8 will gradually come into contact with and press against the outer conical surface of the clamping conical ring 5. Since the taper directions of the two are opposite, this engagement method can convert the axial thrust of the crimping ring 4 into a radial clamping force on the clamping conical ring 5, so that the pressing end 52 of the clamping conical ring 5 contracts inward more evenly, thereby pressing the outer wall of the pipe 16 more tightly. At the same time, it avoids slippage or stress concentration between the crimping ring 4 and the clamping conical ring 5, improving the reliability of crimping and the sealing effect.
[0051] Preferably, the end of the snap-fit conical ring 8 away from the crimping ring 4 is provided with an annular retaining tooth 9. The snap-fit conical ring 8 moves with the crimping ring 4 toward the pressing end 52 and squeezes the snap-fit conical ring 5 until the pressing part 6 presses the pipe 16, at which point the annular retaining tooth 9 engages with the end of the pressing end 52. Specifically, a ring of sharp annular retaining teeth 9 is machined on the inner edge or end face of the small-diameter end of the snap-fit conical ring 8. The material hardness of the retaining teeth is higher than that of the pressing end 52 of the snap-fit conical ring 5. When the rotating ring drives the crimping ring 4 to move the snap-fit conical ring 8 toward the end of the connector body 1, the inner conical surface of the snap-fit conical ring 8 continuously squeezes the outer conical surface of the crimping conical ring 5, forcing the pressing end 52 to radially contract and press the pipe 16. When the crimping stroke is about to end, the annular retaining tooth 9 at the end of the snap-fit conical ring 8 just abuts and engages with the outer edge of the pressing end 52 of the crimping conical ring 5, forming a mechanical interlocking structure. The engagement of the ring teeth 9 provides clear tactile or audible feedback on the crimping, indicating to the construction personnel that the crimping is complete. It also plays a role in preventing loosening after crimping. Even if subjected to vibration or pressure fluctuations during long-term use, there will be no relative displacement between the snapping conical ring 8 and the clamping conical ring 5, ensuring that the clamping part 6 always maintains an effective clamping force on the pipe 16.
[0052] Preferably, the circumferential surface of the clamping conical ring 5 is provided with an annular toothed groove 10, which corresponds to the clamping part 6; the end of the clamping conical ring 8 away from the clamping ring 4 is provided with an annular retaining tooth 9. The clamping conical ring 8 moves with the clamping ring 4 toward the clamping end 52 and squeezes the clamping conical ring 5 until the clamping part 6 clamps the pipe 16, at which point the annular retaining tooth 9 engages with the annular toothed groove 10. Specifically, when the clamping part 6 is not located at the very end of the clamping end 52, but is embedded in a specific position inside the clamping end 52, the annular toothed groove 10 is provided at a radial position on the outer circumferential surface of the clamping conical ring 5 corresponding to the clamping part 6. The snap-fit conical ring 8 moves towards the pressing end 52 under the push of the pressing ring 4. Its inner conical surface continuously presses against the outer conical surface of the snap-fit conical ring 5, forcing the pressing end 52 to contract radially, thereby making the pressing part 6 tightly hug the outer wall of the pipe 16. When the pressing stroke reaches the preset end point, the annular snap tooth 9 at the end of the snap-fit conical ring 8 is precisely engaged in the annular tooth groove 10 on the outer wall of the pressing conical ring 5. Since the annular tooth groove 10 and the pressing part 6 correspond one-to-one in radial position, it is ensured that when the annular snap tooth 9 is engaged in the annular tooth groove 10, the radial pressure it applies can be accurately transmitted to the position of the pressing part 6, so that the pressing part 6 obtains the most direct and effective pressing force, avoiding insufficient pressing force or uneven pressing due to the offset of the force point, thereby improving the sealing performance and pull-out resistance of the pipe 16 connection.
[0053] Preferably, a press-fit connection construction device for a secondary water supply pipe 16 further includes a pipe sleeve ring 11, which is sleeved on the connector body 1 and located within the cavity of the pipe 16. The pipe sleeve ring 11 is used to fit onto the inner wall of the pipe 16. Specifically, the pipe sleeve ring 11 is a cylindrical bushing, typically made of stainless steel or engineering plastic, and its outer diameter matches the inner diameter of the pipe 16 to be connected. The pipe fitting ring 11 is tightly fitted onto the inner wall of the connector body 1 or embedded in the middle of the cavity of the pipe 16. When connecting the pipe 16, the pipe 16 is not only fitted onto the connector body 1 from the outside, but its inner wall is also fitted onto the outer wall of the pipe fitting ring 11. Thus, the outside of the pipe 16 is subjected to radial pressure by the clamping part 6 of the clamping conical ring 5, while the inside is provided with rigid support by the pipe fitting ring 11. This allows the wall of the pipe 16 to be clamped between the clamping part 6 and the fitting ring during the crimping process, thereby preventing the pipe 16 from undergoing inward deformation or diameter reduction due to excessive pressure. This ensures that the inner wall of the pipe 16 is smooth and flat, without affecting the flow rate and hygiene requirements of the secondary water supply. At the same time, the pipe fitting ring 11 can also enhance the structural strength of the connection, improve the pull-out resistance and long-term reliability.
[0054] Preferably, the clamping part 6 is a conical tooth, and the pipe fitting ring 11 is provided with an annular groove 15, which engages with the conical tooth after clamping the pipe 16. Specifically, the inner side of the clamping end 52 of the clamping conical ring 5 has several conical teeth distributed circumferentially, and the tips of these teeth are inclined towards the insertion direction of the pipe 16; the outer circumferential surface of the pipe fitting ring 11 has an annular groove 15 at a position corresponding to the conical tooth. When the rotating ring drives the clamping ring 4 to move the clamping conical ring 8 toward the clamping end 52, the inner conical surface of the clamping conical ring 8 presses against the outer conical surface of the clamping conical ring 5, forcing the clamping end 52 to contract radially, so that the conical tooth gradually cuts into the outer wall of the pipe 16; as the clamping stroke advances, the conical tooth penetrates the wall of the pipe 16 and finally engages in the annular groove 15 on the outer wall of the pipe fitting ring 11. Ultimately, this enables pipe 16 to achieve triple locking: First, the tapered teeth cut into the wall of pipe 16 to form the first radial locking; second, the tip of the tapered teeth and the annular groove 15 form the second mechanical interlock, firmly locking the wall of pipe 16 between the tapered teeth and the sleeve ring; finally, the cooperation between the tapered teeth and the annular groove 15 can also form an anti-detachment structure in the axial direction, improving the pull-out resistance and sealing reliability of the connection, and is suitable for pressure fluctuations and vibration conditions that may occur in secondary water supply systems.
[0055] Preferably, the inner conical surface of the clamping conical ring 5 is provided with an annular groove 12, which is located between the clamping part 6 and the connecting end 51. A clamping connection construction device for a secondary water supply pipeline 16 also includes a sealing ring 13, which is installed in the annular groove 12. Specifically, an annular groove 12 is formed on the circumferential direction of the inner wall of the clamping conical ring 5 between the clamping part 6 (such as a conical clamping tooth) and the connecting end 51. The cross-sectional shape of this groove is typically rectangular or trapezoidal, used to accommodate the elastic sealing ring 13 (such as an O-ring or a flat sealing gasket). When the clamping conical ring 5 is compressed radially by the clamping conical ring 8, the sealing ring 13 in the annular groove 12 is also compressed, tightly fitting between the outer wall of the pipeline 16 and the inner wall of the clamping conical ring 5 to prevent media leakage. The annular groove 12 is located between the pressing part 6 and the connecting end 51, so that the sealing ring 13 is always in a state of uniform compression during the pressing process, avoiding the sealing effect due to excessive local deformation of the pressing part 6. Thus, while ensuring the connection strength, long-term reliable sealing performance is achieved, which is especially suitable for secondary water supply systems with high requirements for hygiene and leakage prevention.
[0056] Preferably, the clamping conical ring 5 is provided with a plurality of through grooves 14, which penetrate along the ring wall of the clamping conical ring 5 and are evenly distributed along the circumferential surface of the clamping conical ring 5. Specifically, several through grooves penetrating the ring wall are formed axially on the ring wall of the clamping conical ring 5. These through grooves 14 extend from near the connecting end 51 to near the clamping end 52, dividing the clamping conical ring 5 into a plurality of independent arc-shaped petal structures, and all the through grooves 14 are arranged at equal intervals in the circumferential direction. This allows each lobe of the clamping conical ring 5 to independently and uniformly contract and deform inward when subjected to radial compression by the clamping conical ring 8, avoiding uneven distribution of compression force or local stress concentration due to excessive overall rigidity of the ring body. The straight groove 14 also provides sufficient deformation space for the radial contraction of the clamping conical ring 5, ensuring that the clamping part 6 can more smoothly hug the outer wall of the pipe 16, while reducing the required compression force and making the construction operation more labor-saving. In addition, the uniformly distributed straight groove 14 helps to maintain the force balance of the ring body after compression, preventing uneven compression of the sealing ring 13 due to uneven deformation, thereby improving the sealing reliability and long-term stability of the overall connection.
[0057] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A clamping connection construction device for a secondary water supply pipeline, characterized in that, include: The connector body (1) has a pipe receiving cavity that extends through the connector body (1). At least two guide members (2) are provided on the outer wall of the connector body (1) and extend along the axis of the connector body (1); At least two driven members (3), and multiple driven members (3) are movably connected to multiple guide members (2) in a one-to-one correspondence, so that the driven members (3) can move relative to the connecting body (1) along the extension direction of the guide member (2); At least two crimping rings (4) are fitted onto the outer wall of the connector body (1). The crimping rings (4) are connected to the driven members (3) one by one and move with the driven members (3). At least two clamping conical rings (5), and multiple clamping conical rings (5) are matched one-to-one with multiple crimping rings (4). Each clamping conical ring (5) has a connecting end (51) and a pressing end (52). The connecting end (51) is connected to the connector body (1), and the pressing end (52) is connected to a pressing part (6). The pressing part (6) is used to press the pipe. The outer conical surface of the clamping conical ring (5) extends in a widening direction along the connecting end (51) toward the pressing end (52). The crimping ring (4), the connecting end (51) and the pressing end (52) of the clamping conical ring (5) located on the same side as the crimping ring (4) are distributed sequentially along the axis of the connector body (1) so that when the crimping ring (4) moves, it can squeeze the conical surface of the clamping conical ring (5) until the pressing part (6) presses the pipe.
2. The clamping connection construction device for a secondary water supply pipeline according to claim 1, characterized in that, One of the two guide members (2) is a first external thread and the other is a second external thread, with the thread directions of the first external thread and the second external thread being opposite; the follower (3) is a rotating ring, with one of the two rotating rings threadedly connected to the first external thread and the other threadedly connected to the second external thread.
3. The clamping connection construction device for a secondary water supply pipeline according to claim 2, characterized in that, The pressure-fit connection construction device for a secondary water supply pipeline further includes an abutment ring (7). The abutment ring (7) is sleeved on the circumferential surface of the connector body (1) and located in the middle of the connector body (1). The first external thread and the second external thread are located on opposite sides of the abutment ring (7) and are connected to the abutment ring (7) respectively. The abutment ring (7) is used for the two rotating rings to abut against each other.
4. The clamping connection construction device for a secondary water supply pipeline according to claim 2, characterized in that, The end of the crimping ring (4) away from the rotating ring is connected to a snap-fit conical ring (8). The taper direction of the snap-fit conical ring (8) is opposite to that of the snap-fit conical ring (5) and is used to squeeze the snap-fit conical ring (5).
5. The clamping connection construction device for a secondary water supply pipeline according to claim 4, characterized in that, The snap-fit conical ring (8) has an annular snap tooth (9) at one end away from the crimping ring (4). The snap-fit conical ring (8) moves toward the crimping end (52) along with the crimping ring (4) and squeezes the snap-fit conical ring (5) until the crimping part (6) presses the pipe. At this time, the annular snap tooth (9) snaps into the end of the crimping end (52).
6. The clamping connection construction device for a secondary water supply pipeline according to claim 4, characterized in that, The circumferential surface of the clamping conical ring (5) is provided with an annular tooth groove (10), which corresponds to the clamping part (6); the end of the clamping conical ring (8) away from the clamping ring (4) is provided with an annular tooth (9). The clamping conical ring (8) moves with the clamping ring (4) toward the clamping end (52) and squeezes the clamping conical ring (5) until the clamping part (6) clamps the pipe, at which point the annular tooth (9) engages with the annular tooth groove (10).
7. The clamping connection construction device for a secondary water supply pipeline according to claim 6, characterized in that, The pressure-fit connection construction device for a secondary water supply pipeline also includes a pipe sleeve ring (11), which is fitted onto the connector body (1) and located inside the pipeline accommodating cavity. The pipe sleeve ring (11) is used to fit onto the inner wall of the pipeline.
8. The clamping connection construction device for a secondary water supply pipeline according to claim 7, characterized in that, The clamping part (6) is a conical tooth, and the pipe sleeve ring (11) is provided with an annular groove (15). The annular groove (15) is engaged with the conical tooth after the pipe is clamped.
9. A clamping connection construction device for a secondary water supply pipeline according to claim 8, characterized in that, The inner conical surface of the clamping conical ring (5) is provided with an annular groove (12), which is located between the clamping part (6) and the connecting end (51); the clamping connection construction device for a secondary water supply pipeline also includes a sealing ring (13), which is installed in the annular groove (12).
10. A clamping connection construction device for a secondary water supply pipeline according to claim 1, characterized in that, The clamping conical ring (5) is provided with a plurality of through grooves (14), which penetrate along the ring wall of the clamping conical ring (5) and the plurality of through grooves (14) are evenly distributed along the circumferential surface of the clamping conical ring (5).