Pipe connecting device

Abstract

The utility model discloses a pipe connecting device which comprises a first connector and a second connector, and the second connector is coaxially connected with the first connector in an inserted mode. The first connector and the second connector are each provided with an inserting pipe used for being connected with an external pipeline. A hot melting assembly is arranged on each inserting pipe, and meanwhile a sealing assembly and a hot melting assembly are further arranged in a connecting area of the first connector and the second connector; compared with the prior art, the quick hot melting connection of the inserting area can be achieved through the hot melting assembly, and the connection efficiency of the pipeline can be improved; meanwhile, compared with a traditional gluing mode, melting and mixing of materials of the pipeline and the connecting device are achieved through hot melting connection, the connecting strength between the connecting device and the external pipeline is improved as much as possible, and water seepage of the connector is prevented advantageously; and meanwhile, the end of the external pipeline is separated from water flow in an inner inserting connection mode, the isolation and protection effect on the end area is further improved, and water seepage is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of drainage equipment, and specifically to a pipe connecting device. Background Art

[0002] Composite pipe is a new type of pipe material that boasts significantly improved strength, corrosion resistance, and stability compared to traditional steel and pure plastic pipes. However, composite pipes have a significant drawback: due to the manufacturing process and the inability of different materials to fully fuse together, the composite or adhesive layer can allow fluid to penetrate when the end contacts the conveying medium, causing bulging and delamination. This can also damage the composite pipe's strength, leading to water seepage and rupture. Utility Model Content

[0003] The main purpose of this application is to provide a pipe connection device, aiming to solve the defect of water seepage in the joints existing in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A pipe connecting device includes a first joint;

[0006] a second connector, the second connector being coaxially plug-connected to the first connector; both the first connector and the second connector being provided with a plug-in tube, the plug-in tube being inserted into the external pipe;

[0007] A hot melt assembly, the hot melt assembly being sleeved on each of the plug tubes;

[0008] A sealing component is provided in the connection area between the first joint and the second joint; the connection area between the first joint and the second joint is also sleeved with a hot melt component.

[0009] Optionally, the first connector is provided with a plug connector, and the second connector is provided with a plug hole, and the plug connector is adapted to the plug hole.

[0010] Optionally, a step surface is provided at the bottom of the plug hole, and along the axial direction of the second connector, the step surface abuts against the end face of the plug connector.

[0011] Optionally, the hot melt assembly includes a plurality of heating wires, and each of the heating wires is sequentially embedded in the plug tube along the axial direction of the plug tube.

[0012] Optionally, the sealing assembly includes a sealing ring, a mounting groove is provided on the plug connector, and the sealing ring is placed in the mounting groove; the sealing ring fits tightly against the inner wall of the plug hole.

[0013] Optionally, a first thrust surface with a conical structure is provided at the bottom of the plug hole, a second thrust surface is provided on the plug connector, the mounting groove is provided on the second thrust surface, and the first thrust surface and the second thrust surface have the same taper.

[0014] Optionally, heating wires are embedded on the end face and the outer peripheral surface of the plug connector, and the distance between the two heating wires and the sealing ring is 1-2 cm.

[0015] Optionally, the free ends of the two plug-in tubes are both provided with a guiding surface having a conical structure.

[0016] Optionally, one end of the first joint and the second joint that are plugged into each other is integrally connected to a limit stop ring, the outer diameter of the two limit stop rings is the same as the outer diameter of the external pipe, and the end faces of the two limit stop rings facing each other abut against each other.

[0017] Optionally, heating wires are embedded on the end surfaces of the two limit rings that face away from each other.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] The present application includes a first joint and a second joint, wherein the second joint is coaxially plugged and connected to the first joint; the first joint and the second joint are both provided with a plug-in tube for connecting to an external pipeline; the plug-in tubes are both provided with a hot melt assembly, and a sealing assembly and a hot melt assembly are also provided in the connection area between the first joint and the second joint;

[0020] When the connecting device of the present application is used, the two interconnected pipe sections are plugged into the plug-in tubes of the first connector and the second connector, respectively, that is, the two plug-in tubes are inserted into the two external pipes respectively; then, the first connector and the second connector are plugged into each other. After the connection is completed, the entire connecting device is placed in an alternating electric field. The alternating electric field causes the hot melt component to heat up, thereby heating the first connector and the second connector through the hot melt component, thereby achieving a hot melt connection;

[0021] Compared with existing technologies, the hot melt assembly can achieve rapid hot melt connection in the plug-in area, which is beneficial to improving the connection efficiency of the pipes. At the same time, compared with traditional adhesive bonding, hot melt connection achieves the melting and mixing of the pipe and the connection device materials, which maximizes the connection strength between the connection device and the external pipe, and helps prevent water seepage in the joints.

[0022] Secondly, the sealing component and the hot melt component can achieve a sealed connection between the connection area of the first joint and the second joint, thereby ensuring the airtightness of the connection device and avoiding leakage of the connection device.

[0023] Finally, in the technical solution described in the present application, the plug-in tube is inserted into the external pipe, so the end parts of the external pipe that are most prone to leakage and stratification will face each other or the pipe connecting device, that is, the end of the external pipe is separated from the water flow through the above-mentioned connection method, blocking the contact between the water flow and the end area from the source, thereby avoiding fluid infiltration, stratification and other phenomena in the pipe, and extending the service life of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a pipe connection device provided in embodiment 1 of the present application;

[0025] Figure 2 This is an exploded view of a pipe connection device provided in embodiment 1 of the present application;

[0026] Figure 3 A cross-sectional view of a pipe connecting device provided in embodiment 1 of the present application;

[0027] Figure 4 This is an installation structure diagram of a pipe connection device provided in embodiment 1 of the present application;

[0028] Figure markings: 1-first joint, 2-second joint, 3-plug tube, 4-plug connector, 5-plug hole, 6-step surface, 7-heating wire, 8-sealing ring, 9-mounting groove, 10-first thrust surface, 11-second thrust surface, 12-guide surface, 13-limiting ring.

[0029] The purpose, features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Implementation Method 1

[0035] Reference Figures 1 to 4 This embodiment, as an optional embodiment of the present application, discloses a pipe connection device, including a first joint 1 and a second joint 2, wherein one end of the first joint 1 is integrally connected to a plug-in tube 3, and the other end of the first joint 1 is provided with a plug-in joint 4;

[0036] One end of the second connector 2 is also integrally connected to a plug-in tube 3, and the other end of the second connector is provided with a plug-in hole 5;

[0037] The shape of the plug connector 4 matches the shape of the inner wall of the plug hole 5 to ensure the sealing of the connection area; during installation, the plug connector 4 is inserted into the plug hole 5 to achieve a stable connection between the first connector 1 and the second connector 2;

[0038] It should also be pointed out that the minimum inner diameter of the plug hole 5 is larger than the inner diameter of the plug tube 3, so as to form a step surface 6 perpendicular to the axial direction of the second joint 2 in the transition area between the plug hole 5 and the plug tube 3. During installation, the end face of the plug connector 4 and the step surface 6 abut against each other along the axial direction of the second structure. On the one hand, it can accurately limit the depth of the first joint 1 inserted into the plug hole 5, thereby realizing fast and accurate docking installation; on the other hand, since the step surface 6 is arranged along the radial direction of the second joint 2, it can extend the length of the splicing area between the first joint 1 and the second joint 2 while ensuring that the inner walls of the plug tubes 3 of the first joint 1 and the second joint 2 are flush, thereby avoiding obstruction to the fluid.

[0039] A first thrust surface 10 with a conical structure is further provided at the bottom of the plug hole 5, and a second thrust surface 11 is provided on the plug connector 4. The first thrust surface 10 and the second thrust surface 11 have the same taper. After installation, the first thrust surface 10 and the second thrust surface 11 are completely in contact with each other.

[0040] A mounting groove 9 is further provided on the second thrust surface 11. A sealing assembly is further provided between the second thrust surface 11 and the first thrust surface 10. The sealing assembly includes a sealing ring 8 using a rubber support, and the sealing ring 8 is embedded in the mounting groove 9. It should be noted that there can be 1 to 3 mounting grooves 9, and the mounting grooves 9 are arranged sequentially along the axis of the plug connector 4.

[0041] After the first connector 1 and the second connector 2 are completely installed, the cross section of the plug connector 4 abuts against the limit surface, and the first thrust surface 10 and the second thrust surface 11 are completely fitted together. The sealing ring 8 will be compressed and deformed, completely filling the entire installation groove 9, and the upper part of the sealing ring 8 will be tightly fitted with the first thrust surface 10;

[0042] On the one hand, the above structure makes the contour line of the splicing area of the first joint 1 and the second joint 2 more tortuous, which is conducive to improving the sealing performance; on the other hand, after the first thrust surface 10 and the second thrust surface 11 set in the conical structure are installed, the first thrust surface 10 will apply an extrusion force perpendicular to the second thrust surface 11 to the sealing ring, and the separation of the above extrusion force in the radial and axial directions will compress the sealing ring 8 to deform, thereby better sealing the gap between the first joint 1 and the second joint 2; at the same time, the thrust surface set in the conical structure will cause the installation groove 9 to be located inside the outer surface of the plug joint 4, thereby avoiding the sealing ring from interfering with the plug-in installation of the first joint 1 and the second joint 2, which is conducive to reducing the difficulty of installing the first joint 1 and the second joint 2.

[0043] A limit stop ring 13 is integrally connected to one end of the first joint 1 and the second joint 2 where they are plugged into each other. The outer diameter of the two limit stop rings 13 is the same as the outer diameter of the external pipe, and the end faces of the two limit stop rings 13 facing each other abut against each other.

[0044] The setting of the limit ring 13 is beneficial to improving the structural strength of the first joint 1 and the second joint 2 on the one hand, and on the other hand, it can further optimize the contour curve of the splicing area of the first joint 1 and the second joint 2, thereby improving the sealing of the connection area between the first joint 1 and the second joint 2.

[0045] The pipe connection device further includes a hot melt assembly, which includes a plurality of heating wires 7. Along the axial direction of the plug-in tube 3, each of the heating wires 7 is sequentially embedded in the plug-in tube 3.

[0046] At the same time, a heating wire 7 is also embedded on the end surface of the plug connector 4 that abuts against the limit surface and on the outer peripheral surface of the plug connector 4, and the distance between the heating wire 7 and the sealing ring 8 is 1-2 cm;

[0047] A heating wire 7 is embedded on the end faces of the two limit rings 13 that are away from each other;

[0048] It should be noted that the heating wire 7 is a metal wire, preferably made of iron wire;

[0049] Furthermore, the hot melt assembly may not be made of metal wire, but may be made of metal powder such as iron powder mixed with the pipe and then arranged in a designated area.

[0050] On the one hand, the heating wire 7 can improve the structural strength of the first joint 1 and the second joint 2; on the other hand, when it is placed in an AC electric field, it will be heated by eddy currents, thereby achieving a hot melt connection, thereby increasing the connection strength as much as possible and avoiding water seepage in the joint.

[0051] A conical guide surface 12 is provided at the free end of the plug-in pipe 3. After installation, the large end of the guide surface 12 is completely in contact with the inner wall of the external pipe.

[0052] Since the plug-in tube 3 of the present application will be inserted into an external pipe, and the pipe wall of the plug-in tube 3 has a certain thickness, the setting of the above-mentioned guide surface 12 can form a conical transition surface between the inner wall of the external pipe and the inner wall of the plug-in tube 3, which can make the liquid flow smoother on the one hand and avoid violent collision between the liquid and the end face of the plug-in tube 3 on the other hand.

[0053] When the connection device described in the present application is used, the two interconnected pipe sections are plugged and connected to the plug-in tubes 3 of the first joint 1 and the second joint 2, respectively, that is, the two plug-in tubes 3 are respectively inserted into the two external pipes; then the first joint 1 and the second joint 2 are plugged and connected. After the connection is completed, the entire connection device is placed in an alternating electric field. The alternating electric field will cause the hot melt component to heat up, thereby heating the first joint 1 and the second joint 2 through the hot melt component, thereby achieving a hot melt connection;

[0054] Compared with existing technologies, the hot melt assembly can achieve rapid hot melt connection in the plug-in area, which is beneficial to improving the connection efficiency of the pipes. At the same time, compared with traditional adhesive bonding, hot melt connection achieves the melting and mixing of the pipe and the connection device materials, which maximizes the connection strength between the connection device and the external pipe, and helps prevent water seepage in the joints.

[0055] Secondly, the sealing component and the hot melt component can achieve a sealed connection between the connection area of the first joint and the second joint, thereby ensuring the airtightness of the connection device and avoiding leakage of the connection device.

[0056] Finally, in the technical solution described in the present application, the plug-in tube is inserted into the external pipe, so the end parts of the external pipe that are most prone to leakage and stratification will face each other or the pipe connecting device, that is, the end of the external pipe is separated from the water flow through the above-mentioned connection method, blocking the contact between the water flow and the end area from the source, thereby avoiding fluid infiltration, stratification and other phenomena in the pipe, and extending the service life of the pipe.

[0057] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A pipe connecting device, characterized in that: It includes a first connector (1); A second joint (2), the second joint (2) being coaxially plug-connected to the first joint (1); both the first joint (1) and the second joint (2) are provided with a plug-in tube (3), the plug-in tube (3) being inserted into the external pipe; A hot melt assembly, wherein the hot melt assembly is placed on each of the plug tubes (3); A sealing component is provided in the connection area between the first joint (1) and the second joint (2); the connection area between the first joint (1) and the second joint (2) is also sleeved with a hot melt component; The first joint (1) is provided with a plug connector (4), the second joint (2) is provided with a plug hole (5), and the plug connector (4) is adapted to the plug hole (5); The hot melt assembly includes a plurality of heating wires (7), and each of the heating wires (7) is sequentially embedded in the plug tube (3) along the axial direction of the plug tube (3); The sealing assembly includes a sealing ring (8), a mounting groove (9) is provided on the plug connector (4), and the sealing ring (8) is sleeved in the mounting groove (9); the sealing ring (8) is tightly fitted to the inner wall of the plug hole (5); Heating wires (7) are embedded on the end surface and the outer peripheral surface of the plug connector (4), and the distance between the two heating wires (7) and the sealing ring (8) is 1-2 cm.

2. A pipe connecting device according to claim 1, characterized in that: A step surface (6) is provided at the bottom of the plug hole (5), and along the axial direction of the second joint (2), the step surface (6) abuts against the end surface of the plug joint (4).

3. The pipe connecting device according to claim 1, characterized in that: A first thrust surface (10) with a conical structure is provided at the bottom of the plug hole (5), a second thrust surface (11) is provided on the plug connector (4), the mounting groove (9) is provided on the second thrust surface (11), and the first thrust surface (10) and the second thrust surface (11) have the same taper.

4. The pipe connecting device according to claim 1, characterized in that: The free ends of the two plug-in tubes (3) are both provided with a guiding surface (12) in a conical structure.

5. The pipe connecting device according to claim 1, characterized in that: One end of the first joint (1) and the second joint (2) that are plugged into each other is integrally connected to a limit stop ring (13); the outer diameter of the two limit stop rings (13) is the same as the outer diameter of the external pipe; and the end faces of the two limit stop rings (13) that face each other abut against each other.

6. A pipe connecting device according to claim 5, characterized in that: Heating wires (7) are embedded on the end surfaces of the two limit rings (13) that face away from each other.

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