Joint pipe fitting and pipeline system

Abstract

The utility model relates to the field of pipe fittings, and provides a joint pipe fitting and a pipeline system, the joint pipe fitting comprises a plastic pipe fitting body and a plurality of metal inserts, the end part of the pipe fitting body is provided with interfaces with the same number as the metal inserts, and a water flow channel communicated with each interface is arranged in the pipe fitting body; each metal insert comprises an embedded ring, and each embedded ring is located in the corresponding connector and embedded into the pipe fitting body. Each metal insert is provided with a pipe body connecting structure used for being connected with a pipe body. According to the joint pipe fitting, the pipe fitting body part is made of the plastic material, and the metal insert is arranged at the joint, so that the weight of a product can be greatly reduced on the premise of ensuring the mounting stability.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings, and more specifically, to a joint pipe fitting and a piping system. Background Technology

[0002] In the current technical field, most of the joints and fittings involved in water supply and drainage pipeline systems are made of metal, which are bulky, expensive, and inconvenient to carry and transport. If plastic products are used to achieve this mixing function between different pipes, it is only possible to use multiple plastic fittings for connection. The more connections made, the greater the risk of welding quality problems, and the lower the efficiency, thus increasing the user's installation costs. Furthermore, plastic welding carries another risk: the inner hole may become smaller or even completely blocked due to welding adhesive overflow, resulting in reduced water flow or no water flow, affecting the user's experience.

[0003] like Figure 11 As shown, Figure 11 An existing connector assembly was demonstrated. Its installation method involves preparing two threaded connectors, one tee, one connector with a sliding core, and pipe. The pipe length is then calculated based on the actual usage scenario, and three sections of pipe are cut. Finally, all pipe fittings are welded together using a specialized heat fusion tool. It is important to note that each pipe fitting needs to be allowed to cool for a period of time before connecting to other external pipe fittings. The entire installation process is cumbersome, complex, time-consuming, and labor-intensive.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a connector fitting and piping system that can improve at least one of the problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] In the first aspect, this utility model provides a connector pipe fitting, including a plastic pipe fitting body and a plurality of metal inserts. The end of the pipe fitting body has the same number of interfaces as the number of metal inserts, and the pipe fitting body has a water flow channel communicating with each interface.

[0008] Each metal insert includes an insert ring, and each insert ring is located within the interface and engages with the tube body;

[0009] Each metal insert has a tube connection structure for connecting to the tube body.

[0010] In an optional embodiment, at least one of the metal inserts has a threaded tube connection structure, which is an internal thread provided on the inner wall of the insert ring.

[0011] In an optional embodiment, the pipe connection structure of at least one of all the metal inserts is a threaded structure. The metal insert further includes a connection ring connected to and coaxially arranged with the embedding ring. The threaded structure is an external thread, which is arranged on the outer wall of the connection ring.

[0012] In an optional embodiment, the pipe connection structure of at least one of all the metal inserts includes a connection ring and an interference fit sleeve. Multiple anti-slip convex rings are arranged on the outer wall of the connection ring. The connection ring is coaxially arranged with and connected to the embedding ring. The outer diameter of the connection ring is smaller than the inner diameter of the interference fit sleeve. When the interference fit sleeve is sleeved outside the connection ring, a pipe fixing cavity is formed between them.

[0013] In an optional embodiment, the connection ring and the embedding ring are connected by a limiting flange.

[0014] In an optional embodiment, at least one ring of convex structure or groove structure is arranged on the outer wall of the embedding ring;

[0015] And / or, multiple anti-rotation pins are arranged at intervals on the outermost end surface of the embedding ring located inside the pipe fitting body.

[0016] In an optional embodiment, the pipe fitting body has 3 interfaces, and the water flow channel in the pipe fitting body is in a "human" shape.

[0017] In an optional embodiment, a planar fixing structure is arranged on the outer wall of the pipe fitting body corresponding to at least 2 interfaces;

[0018] Each planar fixing structure includes two fixing platforms. Each fixing platform has a fixing plane. The fixing planes of the two fixing platforms are on the same plane and are tangent to the outer wall of the pipe fitting body. A through hole for a screw to pass through is arranged on each fixing platform.

[0019] In an optional embodiment, the pipe fitting body is in a "human" shape, and reinforcing ribs are arranged at the positions below the two strokes of the "human" character of the pipe fitting body.

[0020] In a second aspect, the present utility model provides a pipeline system, including a pipe body and a joint pipe fitting as described in any one of the foregoing embodiments.

[0021] The beneficial effects of the embodiments of the present utility model are:

[0022] For the joint pipe fitting provided by the present utility model, since the pipe fitting body part is made of plastic material and metal inserts are arranged at the interfaces, the weight of the product can be greatly reduced on the premise of ensuring the installation stability.

[0023] In some preferred embodiments, for example, the water flow channel is in the shape of an "A" shape. The fitting with the water flow channel in the shape of an "A" shape can often be used as a mixing connector. Because the water flow channel is in the shape of an "A" shape, the channel wall is a smooth arc, which can increase the water flow rate compared to a rigid corner structure.

[0024] In some preferred embodiments, the specific arrangement of the metal insert enables convenient and stable connection of the pipe body, thereby simply and effectively improving work efficiency and installation quality. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A front view of the connector fitting provided in an embodiment of this utility model;

[0027] Figure 2 Left view of the connector fitting provided in an embodiment of this utility model;

[0028] Figure 3 Rear view of the connector fitting provided in an embodiment of this utility model;

[0029] Figure 4 A cross-sectional view of the connector pipe fitting provided in an embodiment of this utility model;

[0030] Figure 5 Exploded view of the connector pipe fitting provided in the embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the first metal insert from a first-view perspective.

[0032] Figure 7 This is a schematic diagram of the structure of the first metal insert from a second perspective.

[0033] Figure 8 This is a cross-sectional view of the first metal insert;

[0034] Figure 9 This is a schematic diagram of the structure of the first metal insert;

[0035] Figure 10 A schematic diagram illustrating the use of the connector fittings provided in this embodiment of the utility model;

[0036] Figure 11 This is a schematic diagram of the structure of a connector assembly in the prior art.

[0037] Icons: 100-Connector fitting; 110-Fit body; 111-Interface; 112-Water flow channel; 120-First metal insert; 130-Second metal insert; 131-Connecting ring; 132-Interference fit sleeve; 133-Anti-slip convex ring; 134-Limiting flange; 141-Embedded ring; 142-Groove structure; 143-Raised structure; 144-Anti-rotation convexity; 151-Anti-rotation pin; 161-Reinforcing rib; 170-Planar fixing structure; 171-Fixing platform; 172-Through hole; 173-Fixing plane; 181-Annular boss; 200-Connector; 300-PEX pipe. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] Please refer to Figures 1 to 5 As shown, the embodiment of the present utility model provides a joint pipe fitting 100, which includes a plastic pipe fitting body 110 and a plurality of metal inserts. The end of the pipe fitting body 110 has the same number of interfaces 111 as the number of metal inserts, and a water flow channel 112 communicating with each interface 111 is provided inside the pipe fitting body 110;

[0045] Each metal insert includes an embedding ring 141, and each embedding ring 141 is located inside the interface 111 and is mutually embedded with the pipe fitting body 110;

[0046] Each metal insert has a pipe body connection structure for connecting with a pipe body.

[0047] For the joint pipe fitting 100 provided by the present utility model, since the pipe fitting body 110 is partially made of plastic material and metal inserts are arranged at the interfaces 111, the weight of the product can be greatly reduced while ensuring the installation stability.

[0048] Specifically, as Figure 1 shown in the structure, the joint pipe fitting 100 has 3 interfaces 111, and the water flow channel 112 inside the pipe fitting body 110 is in a "person" shape.

[0049] The joint pipe fitting 100 with a water flow channel 112 in a "person" shape can usually be used as a mixing joint 200. Since the water flow channel 112 is in a "person" shape and the channel wall is a smooth arc, this can increase the water flow rate compared with a rigid corner structure.

[0050] The "pipe body" mentioned in the present utility model can be a pipe, or a joint or device with a pipe body structure.

[0051] As Figures 6 to 8As shown, the pipe connection structure of the metal insert (the first metal insert 120) corresponding to the head of the "human" character includes a connecting ring 131 and an interference fit sleeve 132. The outer wall of the connecting ring 131 is provided with multiple circles of anti-slip convex rings 133. The connecting ring 131 and the embedding ring 141 are coaxially arranged and connected to each other. The outer diameter of the connecting ring 131 is smaller than the inner diameter of the interference fit sleeve 132. When the interference fit sleeve 132 is sleeved outside the connecting ring 131, a pipe fixing cavity is formed between them. During use, the pipe fitting body 110 is clamped. First, the interference fit sleeve 132 is sleeved on the outside of the pipe, then a flaring tool is used to flare the pipe, and then the pipe is sleeved on the connecting ring 131. After that, the interference fit sleeve 132 is pushed tightly towards the direction close to the pipe fitting body 110, so that the interference fit sleeve 132, the pipe and the connecting ring 131 are connected by interference fit. At this time, the pipe is clamped in the pipe fixing cavity. This connection method has the characteristics of good connection stability and good sealing performance.

[0052] The setting of the anti-slip convex ring 133 can prevent the pipe from separating due to the shrinkage force or the action of external force and retreating backward. The most important function is that it has an interference fit with the interference fit sleeve 132. The installation tool continuously pushes the interference fit sleeve 132 along the axial direction towards the metal core, and the interference fit sleeve 132 compresses the pipe to press against the connecting ring 131 to play a sealing role.

[0053] Optionally, the shape of the cross-section of the anti-slip convex ring 133 in its radial direction is semi-circular.

[0054] Optionally, the number of circles of the anti-slip convex ring 133 is 4 or more.

[0055] Optionally, the material of the interference fit sleeve 132 is copper.

[0056] Furthermore, the connecting ring 131 and the embedding ring 141 are connected by a limiting flange 134.

[0057] The function of the limiting flange 134 is to connect the connecting ring 131 and the embedding ring 141, and can play a limiting role on the interference fit sleeve 132 and the pipe when the interference fit sleeve 132 is working.

[0058] As Figure 9 shown, the pipe connection structure of the metal insert (the second metal insert 130) corresponding to the two feet of the "human" character is a threaded structure, and this threaded structure is an internal thread provided on the inner wall of the embedding ring 141.

[0059] During use, first wrap the metal pipe with an external thread at the end with a raw material tape, and then screw it into the embedding ring 141 to realize the connection between the pipe and the joint pipe fitting 100.

[0060] Optionally, at least one ring of convex structures 143 or concave structures 142 is provided on the outer wall of each embedded ring 141. If multiple convex structures 143 are provided, corresponding concave structures 142 are formed between adjacent convex structures 143; if multiple concave structures 142 are provided, corresponding convex structures 143 are formed between adjacent concave structures 142.

[0061] The pipe fitting body 110 and the metal insert are injection molded. Generally, the pre-made metal insert is placed at a suitable position in the mold, and then injection molding is performed integrally by an injection molding machine. During injection molding, the plastic melt can fill into the grooves or wrap around the convex rings, preventing water flow from penetrating through the surface of the metal core and preventing the metal insert from detaching from the plastic pipe fitting body 110. Optionally, the number of rings of the convex structures 143 or concave structures 142 is 1 to 3 rings.

[0062] Optionally, as Figures 6 to 9 shown, a plurality of anti-rotation pins 151 are provided at intervals on the outermost end surface of the embedded ring 141 located inside the pipe fitting body 110.

[0063] The provision of the anti-rotation pins 151 can prevent the metal core from being rotationally damaged radially by external forces during the installation process or use process, thereby causing the core to detach from the plastic joint 200 body and damaging the adhesion between the plastic and the metal insert surface.

[0064] Optionally, the optimal number of the anti-rotation pins 151 is 4 or more, and they are evenly arranged in a circular array on the outermost end surface of the embedded ring 141.

[0065] Optionally, a plurality of anti-rotation protrusions 144 are provided on the convex structure 143 of the metal insert, and the anti-rotation protrusions 144 are evenly distributed along the circumferential direction of the convex structure 143.

[0066] The function of the anti-rotation protrusions 144 is similar to that of the anti-rotation pins 151, which is to further prevent the metal core from being rotationally damaged radially by external forces during the installation process or use process. In the illustrated structure of the present invention, the anti-rotation protrusions 144 are only provided on the second metal insert 130 and not on the first metal insert 120. It should be noted that in other embodiments of the present invention, the anti-rotation protrusions 144 can also be provided on the first metal insert 120 and not on the second metal insert 130, or provided on both metal inserts.

[0067] Optionally, the shape of the pipe fitting body is also in a "V" shape. The wall thickness of the water flow channel 112 is uniform, minimizing the weight of the joint pipe fitting 100 while ensuring the strength of the pipe fitting.

[0068] Furthermore, reinforcing ribs 161 are provided at positions corresponding to the lower parts of the two strokes of the "V" of the pipe fitting body 110.

[0069] The arrangement of the reinforcing rib 161 mainly has two functions. First, it enhances the strength of the pipe fitting body 110. Second, it facilitates clamping during the installation of the pipe body by pushing and tightening.

[0070] Optionally, the thickness of the reinforcing rib 161 is 4 mm or greater than 4 mm.

[0071] Furthermore, the outer diameter and wall thickness of the pipe fitting body 110 at the three interfaces 111 are larger than those of other parts, forming three annular bosses 181. One corresponds to the head of the "human" character and is located in the middle, and the other two correspond to the two feet of the "human" character and are arranged oppositely.

[0072] Optionally, a planar fixing structure 170 is provided on the outer walls of the two oppositely arranged annular bosses 181 of the pipe fitting body 110; each planar fixing structure 170 includes two fixing platforms 171, each fixing platform 171 has a fixing plane 173, the fixing planes 173 of the two fixing platforms 171 are on the same plane and are tangent to the outer wall of the pipe fitting body 110, and a through hole 172 for a screw to pass through is provided on each fixing platform 171.

[0073] The specific arrangement of the planar fixing structure 170 enables the connection pipe fitting 100 to be conveniently fixed and pressed on a plane (such as a wall surface) by screws.

[0074] As Figure 10 shown, the installation steps of the connection pipe fitting 100 provided by the embodiment of the present utility model are as follows:

[0075] Taking the connection of fitting 100 with PEX pipe 300 and threaded fitting 200 as an example, first wrap Teflon tape around the external thread of the threaded fitting 200, then screw the Teflon tape-wrapped external threaded fitting 200 into the internally threaded insert ring 141, and tighten it with a suitable tool. The same installation operation is performed on both ends of the "V"-shaped fitting 100. After the threaded part is connected, the pipes or equipment that need to be connected at both ends can be connected first, and then the PEX pipe 300 of the intermediate pipeline can be connected. Before installing the intermediate piping, first check the reinforcing ribs 161 of the metal core for burrs or damage. If everything is intact, first insert the interference fit sleeve 132 into the prepared PEX pipe 300, then use a special flaring tool to flare the pipe end. After flaring, quickly insert it onto the metal core, inserting it as deeply as possible so that the pipe end face touches the limiting flange 134. Then move the interference fit sleeve 132, which has already been inserted into the pipe, to a position close to the connecting ring 131. Next, use a special sliding tightening tool to push the interference fit sleeve 132 into approximately the middle position of the corresponding connecting ring 131, ensuring that the interference fit sleeve 132 almost completely covers the anti-slip protrusions 133. After the pipe installation is complete, it can be fixed to the wall with screws using the flat fixing structure 170, as needed. This completes the entire installation.

[0076] It should be noted that although the structure shown in the illustration is a 3-way structure, in other embodiments of this utility model, the connector pipe 100 structure can also be a 2-way, elbow, 4-way, or multi-way structure. The structures of the multiple metal inserts can be the same or different. The pipe body connection structure of the metal inserts can all be threaded or can all have a connecting ring 131 and an interference fit sleeve 132. The threaded structure can be an internal thread on the inner wall of the insert ring 141, or an external thread on the outer wall of the connecting ring 131 connected to the insert ring 141.

[0077] In summary, the connector fitting 100 provided by this utility model, because the fitting body 110 is made of plastic and a metal insert is provided at the interface 111, can greatly reduce the weight of the product while ensuring installation stability.

[0078] In a preferred embodiment, the water flow channel 112 is in the shape of a "V". The joint fitting 100 with the water flow channel 112 in the shape of a "V" can usually be used as a mixing connector 200. Since the water flow channel 112 is in the shape of a "V" and the channel wall is a smooth arc, it can increase the water flow rate compared to a rigid corner structure.

[0079] In a preferred embodiment, the specific arrangement of the metal insert enables convenient and stable connection of the tube body.

[0080] This utility model embodiment also provides a pipeline system, including a pipe body and a connector fitting 100 provided in this utility model embodiment.

[0081] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A joint pipe fitting, characterized in that: It includes a plastic pipe fitting body and multiple metal inserts. The end of the pipe fitting body has the same number of interfaces as the metal inserts, and there is a water flow channel in the pipe fitting body that communicates with each of the interfaces. Each of the metal inserts includes an embedding ring, and each of the embedding rings is located within the interface and is mutually fitted with the pipe fitting body. Each of the metal inserts has a pipe body connection structure for connecting with a pipe body.

2. The joint pipe fitting according to claim 1, characterized in that: The pipe body connection structure of at least one of all the metal inserts is a threaded structure, and the threaded structure is an internal thread provided on the inner wall of the embedding ring.

3. The joint pipe fitting according to claim 1, characterized in that: The pipe body connection structure of at least one of all the metal inserts is a threaded structure. The metal insert further includes a connection ring connected to and coaxially arranged with the embedding ring, and the threaded structure is an external thread provided on the outer wall of the connection ring.

4. The joint pipe according to any one of claims 1 to 3, characterized in that: The pipe body connection structure of at least one of all the metal inserts includes a connection ring and an interference fit sleeve. The outer wall of the connection ring is provided with multiple circles of anti-slip convex rings. The connection ring is coaxially arranged with the embedding ring and the two are connected to each other. The outer diameter of the connection ring is smaller than the inner diameter of the interference fit sleeve. When the interference fit sleeve is sleeved outside the connection ring, a pipe body fixing cavity is formed between the two.

5. The joint pipe fitting according to claim 4, characterized in that: The connection ring and the embedding ring are connected by a limiting flange.

6. The joint pipe fitting according to claim 1, characterized in that: The outer wall of the embedding ring is provided with at least one circle of convex structure or groove structure. And / or, multiple anti-rotation pins are spacedly arranged on the outermost end surface of the embedding ring located within the pipe fitting body.

7. The joint pipe fitting according to claim 1, characterized in that: The pipe fitting body has 3 of the interfaces, and the water flow channel in the pipe fitting body is in a "human" shape.

8. The joint pipe according to claim 7, characterized in that: The outer wall of the pipe fitting body corresponding to at least 2 of the interfaces is provided with a planar fixing structure. Each of the planar fixing structures includes two fixing platforms, and each of the fixing platforms has a fixing plane. The fixing planes of the two fixing platforms are on the same plane and are tangent to the outer wall of the pipe fitting body. Each of the fixing platforms is provided with a through hole for a screw to pass through.

9. The joint pipe according to claim 7, characterized in that: The pipe fitting body is in a "human" shape, and a reinforcing rib is arranged at the position corresponding to the lower part of the two strokes of the "human" character of the pipe fitting body.

10. A pipeline system, characterized in that: It includes a pipe body and a joint pipe fitting as described in any one of claims 1 to 9.

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