Slip-on pipe connection for a radiant panel

Abstract

The utility model relates to the technical field of sliding tight type pipeline connecting piece, specifically discloses a sliding tight type pipeline connecting piece for radiation plate, including two pipelines, one side of two pipeline is equipped with flared portion, still includes, sliding tight mechanism, set up between two pipelines, be used for connecting, the sliding tight mechanism includes joint, the left and right ends of joint are inserted to the inside of two flared portions respectively, the outer wall of two flared portions is closely sleeved with sliding tight cover, the outer wall of joint is fixedly connected with two limit rings, the opposite end of two sliding tight covers is fixedly connected with the baffle ring, make the limit insertion rod insert the limit hole in the positioning rod and complete mechanical locking, and the baffle ring is blocked on the outside of flared portion, the design forms reliable mechanical locking through to sliding tight cover and pipeline, prevents pipeline accidental uncoupling to still can guarantee the leakproofness of connection under extreme working condition, effectively prevents medium leakage.

Description

Technical Field

[0001] This utility model relates to the technical field of sliding pipe connectors, and specifically discloses a sliding pipe connector for a radiant panel. Background Technology

[0002] Radiant panel systems (such as capillary radiant panels and metal radiant panels) are widely used in modern buildings as efficient and comfortable terminal heating and cooling equipment. These systems consist of numerous parallel fluid pipes, and their operational reliability hinges on the connections between the pipes and between the pipes and the manifolds of the radiant panel modules. Slip-fitted pipe fittings have become one of the mainstream connection methods in this field due to their advantages such as quick installation, reliable sealing, and maintenance-free operation. They typically achieve a tight mechanical lock and seal through a joint, a slip-fit ​​sleeve, and the flared deformation of the pipe itself.

[0003] In existing technologies, typical sliding-fit pipe fittings require the use of specialized sliding-fit pliers to apply strong radial pressure to the sliding sleeve fitted onto the flared end of the pipe during installation. This pressure forces the sliding sleeve and the flared end of the pipe to undergo plastic deformation, causing them to tightly engage with external structures such as the retaining ring, thereby achieving pipe connection and sealing. This interference fit and frictional force, formed by material deformation, is sufficient to withstand the system's operating pressure. However, this type of connection relies entirely on static frictional resistance. When the piping system is subjected to installation stress, water hammer effect, or unforeseen strong external forces, this static frictional force may be overcome, leading to relative displacement between the pipe and the fitting. When the pipe tends to detach, the sealing performance will drastically decrease, potentially even causing media leakage, posing a serious threat to the safe operation of the entire radiant panel system.

[0004] Therefore, a sliding-fit pipe connector for radiant panels is needed to solve the above problems. Utility Model Content

[0005] This utility model proposes a sliding pipe connector for radiant panels. By setting a limiting mechanism, a reliable mechanical lock is formed between the sliding sleeve and the pipe to prevent the pipe from accidentally coming off. This ensures the sealing of the connection even under extreme working conditions and effectively prevents media leakage.

[0006] This utility model is implemented as follows: a sliding-fit pipe connector for a radiant panel includes two pipes, each with a flared end on an opposite side, and further includes:

[0007] A sliding tensioning mechanism is provided between two pipes for connecting them. The sliding tensioning mechanism includes a connector, the left and right ends of which are respectively inserted into the interior of two flared parts. The outer walls of the two flared parts are tightly fitted with sliding sleeves. The outer wall of the connector is fixedly connected with two limiting rings. The opposite ends of the two sliding sleeves are fixedly connected with retaining rings.

[0008] Two limiting mechanisms are respectively set outside the two sliding sleeves to fix the position of the two sliding sleeves. The limiting mechanism includes two fixing plates fixedly connected to the outer wall of the limiting ring. The outer walls of the two fixing plates are provided with positioning holes. The outer walls of the sliding sleeves are fixedly connected to two positioning rods that pass through the corresponding positioning holes.

[0009] A limiting hole is formed through the outer wall of the positioning rod. The interior of the fixing plate is provided with a cavity. A threaded sleeve is fixedly connected through the cavity on the side away from the positioning hole. A screw is threadedly connected inside the threaded sleeve. A movable plate is rotatably connected to one end of the screw inside the cavity. A through hole is formed through the cavity on the side near the positioning hole. A limiting rod is fixedly connected to the end of the movable plate away from the screw. The limiting rod passes through the through hole and is inserted into the interior of the limiting hole.

[0010] As a preferred embodiment of the sliding pipe connector for a radiant plate according to this utility model, the cavity has two sliding grooves inside, and each of the two sliding grooves has a slider that is fixedly connected to the moving plate.

[0011] As a preferred embodiment of the sliding pipe connector for a radiant plate according to this utility model, the retaining ring is a conical ring structure, the minimum diameter of the inner wall of the retaining ring is smaller than the maximum diameter of the outer wall of the flared portion, and the minimum diameter of the inner wall of the retaining ring is larger than the outer diameter of the pipe.

[0012] As a preferred embodiment of the sliding pipe connector for radiant plates of this utility model, the inner wall of the sliding sleeve has a rounded corner near the edge of the limiting ring.

[0013] As a preferred embodiment of the sliding pipe connector for a radiant plate according to this utility model, both the end of the positioning rod away from the sliding sleeve and the end of the limiting rod away from the moving plate are provided with tapered guide heads.

[0014] As a preferred embodiment of the sliding pipe connector for a radiant panel according to this utility model, an anti-slip knob is fixedly connected to one end of the screw located outside the cavity.

[0015] The beneficial effects of this utility model are:

[0016] During installation, the sliding sleeve is first pre-installed on the pipe and the flared end is machined. Then, the flared end of the pipe is fitted into the joint until it fits against the limiting ring. Next, the positioning rod on the outer wall of the sliding sleeve is inserted into the positioning hole of the fixing plate. The sliding sleeve is then pushed from the side using sliding clamps, forcing the sliding sleeve to tightly hug the flared end of the pipe and press it against the joint, forming a sealed connection based on interference fit. Finally, the screw is rotated to push the moving plate, so that the limiting rod is inserted into the limiting hole of the positioning rod to complete the mechanical locking. The retaining ring is also locked on the outside of the flared end. This design forms a reliable mechanical lock between the sliding sleeve and the pipe, preventing the pipe from accidentally coming off, thus ensuring the sealing of the connection even under extreme working conditions and effectively preventing media leakage. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front sectional view of the sliding pipe connector for a radiant panel according to the present invention.

[0019] Figure 2 This is a structural diagram of the sliding sleeve of this utility model;

[0020] Figure 3 This is a structural diagram of the limiting ring of this utility model;

[0021] Figure 4 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0022] The markings in the diagram are: 1. Pipe; 2. Flared end; 3. Connector; 4. Limiting ring; 5. Sliding sleeve; 6. Retaining ring; 7. Positioning rod; 8. Fixing plate; 9. Positioning hole; 10. Limiting hole; 11. Cavity; 12. Moving plate; 13. Screw; 14. Threaded sleeve; 15. Slider; 16. Slide groove; 17. Through hole; 18. Limiting rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-4 A sliding-fit pipe connector for a radiant panel includes two pipes 1, each with a flared end 2 on an opposite side, and further includes:

[0025] A sliding tensioning mechanism is set between two pipes 1 for connecting them. The sliding tensioning mechanism includes a connector 3. The left and right ends of the connector 3 are respectively inserted into the interior of two flared parts 2. The outer walls of the two flared parts 2 are tightly fitted with sliding sleeves 5. The outer wall of the connector 3 is fixedly connected with two limiting rings 4. The opposite ends of the two sliding sleeves 5 are fixedly connected with retaining rings 6.

[0026] Two limiting mechanisms are respectively set outside the two sliding sleeves 5 to fix the position of the two sliding sleeves 5. The limiting mechanism includes two fixing plates 8 fixedly connected to the outer wall of the limiting ring 4. The outer walls of the two fixing plates 8 are provided with positioning holes 9. The outer walls of the sliding sleeves 5 are fixedly connected to two positioning rods 7 that pass through the corresponding positioning holes 9 respectively.

[0027] A limiting hole 10 is provided through the outer wall of the positioning rod 7. The inside of the fixing plate 8 is provided with a cavity 11. A threaded sleeve 14 is fixedly connected through the side of the cavity 11 away from the positioning hole 9. A screw 13 is threadedly connected inside the threaded sleeve 14. A movable plate 12 is rotatably connected to one end of the screw 13 inside the cavity 11. A through hole 17 is provided through the end of the cavity 11 near the positioning hole 9. A limiting insertion rod 18 is fixedly connected to the end of the movable plate 12 away from the screw 13. The limiting insertion rod 18 passes through the through hole 17 and is inserted into the inside of the limiting hole 10.

[0028] In this embodiment: First, the sliding sleeve 5 is pre-fitted onto the pipe 1. Then, a flared portion 2 is machined at the end of the pipe 1. Subsequently, the flared portion 2 of the pipe 1 is aligned with and fitted onto the outer wall of the connector 3, so that the flared portion 2 fits against the limiting ring 4. Then, the sliding sleeve 5 is pushed to move on the outer wall of the pipe 1, and the positioning rod 7 is inserted into the positioning hole 9 of the fixing plate 8. At this time, the sliding sleeve 5 has not yet been fitted onto the flared portion 2.

[0029] Subsequently, using specialized sliding clamps, the clamps are engaged between the retaining ring 6 and the limiting ring 4 from either the front or rear. Since there is sufficient clearance between the positioning rod 7 and the connector 3, engaging the clamps in either direction will not affect their operation. The clamps then exert a pushing force on the retaining ring 6 and the sliding sleeve 5, thereby securing the sliding sleeve 5 onto the outer wall of the flared portion 2. At this point, the sliding sleeve 5 tightly grips the flared portion 2 of the pipe 1, firmly pressing it against the connector 3, forming a basic locking structure that achieves a seal through interference fit and friction.

[0030] When the sliding sleeve 5 is in contact with the outer wall of the limiting ring 4, the limiting hole 10 and the limiting rod 18 are aligned. The operator rotates the screw 13, which screws into the cavity 11 through the threaded engagement with the threaded sleeve 14, and pushes the moving plate 12 and the limiting rod 18 to move until the limiting rod 18 is inserted into the limiting hole 10. Through the mutual engagement of the limiting rod 18 and the limiting hole 10, the positioning rod 7 is locked, and the sliding sleeve 5 is locked at the same time. The retaining ring 6 fixed to the end of the sliding sleeve 5 is blocked on the outside of the flared part 2 to prevent the flared part 2 from coming out of the sliding sleeve 5.

[0031] In summary, this provides a reliable mechanical lock for the sliding sleeve 5 and the pipe 1, preventing the pipe 1 from accidentally coming off, thus ensuring the sealing of the connection even under extreme operating conditions and effectively preventing media leakage.

[0032] As a technical optimization of this utility model, two sliding grooves 16 are provided inside the cavity 11, and sliders 15 that are fixedly connected to the moving plate 12 are slidably connected inside the two sliding grooves 16.

[0033] In this embodiment, the movable plate 12 achieves linear movement within the cavity 11 through the cooperation of the slider 15 and the slide groove 16. When the screw 13 pushes, the slider 15 slides smoothly along the slide groove 16.

[0034] As a technical optimization of this utility model, the retaining ring 6 is a conical ring structure, the minimum diameter of the inner wall of the retaining ring 6 is smaller than the maximum diameter of the outer wall of the flared part 2, and the minimum diameter of the inner wall of the retaining ring 6 is larger than the outer diameter of the pipe 1.

[0035] In this embodiment: Since the minimum diameter of the inner wall of the retaining ring 6 is smaller than the maximum diameter of the outer wall of the flared part 2, and the minimum diameter of the inner wall of the retaining ring 6 is larger than the outer diameter of the pipe 1, the flared part 2 is prevented from coming out of the sliding sleeve 5.

[0036] As a technical optimization of this utility model, the inner wall of the sliding sleeve 5 is provided with a rounded corner near the edge of the limiting ring 4.

[0037] In this embodiment, the rounded corners of the inner wall edge of the sliding sleeve 5 serve as a guide during assembly, reducing the resistance when the flared part 2 is inserted and preventing scratches on the flared part 2.

[0038] As a technical optimization of this utility model, a tapered guide head is provided at the end of the positioning rod 7 away from the sliding sleeve 5 and at the end of the limiting rod 18 away from the moving plate 12.

[0039] In this embodiment, the tapered guide heads at the ends of the positioning rod 7 and the limiting rod 18 play a self-guiding role when passing through the positioning hole 9 and being inserted into the limiting hole 10, respectively, to ensure rapid and accurate alignment.

[0040] As a technical optimization of this utility model, an anti-slip knob is fixedly connected to one end of the screw 13 located outside the cavity 11.

[0041] In this embodiment, the screw 13 can be easily rotated using the anti-slip knob.

[0042] The working principle and usage process of this utility model are as follows: First, the sliding sleeve 5 is pre-fitted onto the pipe 1. Then, a flared portion 2 is machined at the end of the pipe 1. Subsequently, the flared portion 2 of the pipe 1 is aligned with and fitted onto the outer wall of the connector 3, so that the flared portion 2 fits against the limiting ring 4. Then, the sliding sleeve 5 is pushed to move on the outer wall of the pipe 1, and the positioning rod 7 is inserted into the positioning hole 9 of the fixing plate 8. At this time, the sliding sleeve 5 has not yet been fitted onto the flared portion 2.

[0043] Subsequently, using specialized sliding clamps, the clamps are engaged between the retaining ring 6 and the limiting ring 4 from either the front or rear. Since there is sufficient clearance between the positioning rod 7 and the connector 3, engaging the clamps in either direction will not affect their operation. The clamps then exert a pushing force on the retaining ring 6 and the sliding sleeve 5, thereby securing the sliding sleeve 5 onto the outer wall of the flared portion 2. At this point, the sliding sleeve 5 tightly grips the flared portion 2 of the pipe 1, firmly pressing it against the connector 3, forming a basic locking structure that achieves a seal through interference fit and friction.

[0044] When the sliding sleeve 5 is in contact with the outer wall of the limiting ring 4, the limiting hole 10 and the limiting rod 18 are aligned. The operator rotates the screw 13 through the anti-slip knob. The screw 13, through its threaded engagement with the threaded sleeve 14, screws into the cavity 11 and pushes the moving plate 12 and the limiting rod 18 to move until the limiting rod 18 is inserted into the limiting hole 10. Through the mutual engagement of the limiting rod 18 and the limiting hole 10, the positioning rod 7 is locked, and the sliding sleeve 5 is locked. The retaining ring 6 fixed to the end of the sliding sleeve 5 is locked on the outside of the flared part 2 to prevent the flared part 2 from coming out of the sliding sleeve 5.

[0045] In summary, this provides a reliable mechanical lock for the sliding sleeve 5 and the pipe 1, preventing the pipe 1 from accidentally coming off, thus ensuring the sealing of the connection even under extreme operating conditions and effectively preventing media leakage.

[0046] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., 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, they should not be construed as limitations on this utility model.

[0047] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A sliding-fit pipe connector for a radiant panel, comprising two pipes (1), each of the two pipes (1) having a flared end (2) on one opposite side, characterized in that, Also includes: A sliding tensioning mechanism is set between two pipes (1) for connecting them. The sliding tensioning mechanism includes a connector (3). The left and right ends of the connector (3) are respectively inserted into the interior of two flared parts (2). The outer walls of the two flared parts (2) are tightly fitted with sliding sleeves (5). The outer wall of the connector (3) is fixedly connected with two limiting rings (4). The opposite ends of the two sliding sleeves (5) are fixedly connected with retaining rings (6). Two limiting mechanisms are respectively set outside the two sliding sleeves (5) to fix the position of the two sliding sleeves (5). The limiting mechanism includes two fixing plates (8) fixedly connected to the outer wall of the limiting ring (4). The outer walls of the two fixing plates (8) are provided with positioning holes (9). The outer walls of the sliding sleeves (5) are fixedly connected with two positioning rods (7) that pass through the corresponding positioning holes (9). The outer wall of the positioning rod (7) is provided with a limiting hole (10). The inside of the fixing plate (8) is provided with a cavity (11). A threaded sleeve (14) is fixedly connected to the side of the cavity (11) away from the positioning hole (9). A screw (13) is threadedly connected to the inside of the threaded sleeve (14). A movable plate (12) is rotatably connected to one end of the screw (13) inside the cavity (11). A through hole (17) is provided to one end of the cavity (11) near the positioning hole (9). A limiting insert (18) is fixedly connected to one end of the movable plate (12) away from the screw (13). The limiting insert (18) passes through the through hole (17) and is inserted into the inside of the limiting hole (10).

2. The sliding-fit pipe connector for a radiant panel according to claim 1, characterized in that: The cavity (11) has two sliding grooves (16) inside, and each of the two sliding grooves (16) has a slider (15) that is fixedly connected to the moving plate (12).

3. The sliding-fit pipe connector for a radiant panel according to claim 1, characterized in that: The retaining ring (6) is a conical ring structure. The minimum diameter of the inner wall of the retaining ring (6) is smaller than the maximum diameter of the outer wall of the flared part (2). The minimum diameter of the inner wall of the retaining ring (6) is larger than the outer diameter of the pipe (1).

4. The sliding-fit pipe connector for a radiant panel according to claim 1, characterized in that: The inner wall of the sliding sleeve (5) near the edge of the limiting ring (4) has rounded corners.

5. A sliding-fit pipe connector for a radiant panel according to claim 1, characterized in that: The end of the positioning rod (7) away from the sliding sleeve (5) and the end of the limiting rod (18) away from the moving plate (12) are both provided with tapered guide heads.

6. The sliding-fit pipe connector for a radiant panel according to claim 1, characterized in that: The screw (13) is fixedly connected to an anti-slip knob at one end outside the cavity (11).

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