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. Compared with traditional steel pipe and pure plastic pipe, composite pipe has significantly improved strength, corrosion resistance and stability. However, composite pipe has an obvious defect. Its composite layer or bonding layer cannot be completely integrated due to its production process and different materials. When the end contacts the conveying medium, it will cause fluid infiltration, causing bulging, delamination and other phenomena. Later, it will also destroy the strength of the composite pipe, causing water seepage and rupture. Utility Model Content

[0003] The main purpose of the present 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 comprises a first joint;

[0006] A second joint, the second joint is coaxially plug-connected with the first joint; both the first joint and the second joint are provided with a plug-in tube, the plug-in tube is inserted into the external pipe;

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

[0008] A sealing component is arranged 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, a plug connector is provided on the first connector, and a plug hole is provided on the second connector, 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 surface of the plug connector.

[0011] Optionally, the sealing assembly includes a sealing ring, and a mounting groove is provided on the plug connector, and the sealing ring is placed in the mounting groove; the sealing ring is tightly fitted to the inner wall of the plug hole.

[0012] 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.

[0013] Optionally, the free ends of the two plug-in tubes are both provided with guiding surfaces with a conical structure.

[0014] Optionally, one end of the first joint and the second joint that are plugged into each other are both integrally connected with 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.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] 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 plug-in tubes for connecting to external pipes; the plug-in tubes are both provided with hot melt components, and a sealing component and a hot melt component are also provided in the connection area between the first joint and the second joint;

[0017] When the connection device of the present application is used, the two interconnected pipe sections are plugged and connected to the plug-in tubes of the first joint and the second joint, respectively, that is, the two plug-in tubes are respectively inserted into the two external pipes; then the first joint is plugged and connected to the second joint, and after the connection is completed, the entire connection device is placed in an alternating electric field, and the alternating electric field will cause the hot melt component to heat up, thereby heating the first joint and the second joint through the hot melt component, thereby achieving hot melt connection;

[0018] Compared with the existing technology, the hot melt assembly can realize the rapid hot melt connection of the plug-in area, which is beneficial to improve the connection efficiency of the pipeline; at the same time, compared with the traditional adhesive bonding method, the hot melt connection realizes the melting and mixing of the pipeline and the connection device materials, and improves the connection strength between the connection device and the external pipeline as much as possible, which is beneficial to prevent the occurrence of water seepage in the joint;

[0019] Secondly, the sealing component and the hot melt component can achieve a sealed connection between the connecting area of ​​the first joint and the second joint, thereby ensuring the airtightness of the connecting device and avoiding leakage of the connecting device.

[0020] 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 the like in the pipe, and extending the service life of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a pipe connection device provided in Embodiment 1 of the present application;

[0022] Figure 2 An exploded view of a pipe connection device provided in Embodiment 1 of the present application;

[0023] Figure 3 This is a schematic diagram of an assembly of a pipe connection device provided in Embodiment 1 of the present application;

[0024] Figure markings: 1-first joint, 2-second joint, 3-plug tube, 4-plug connector, 5-plug hole, 6-step surface, 7-sealing ring, 8-installation groove, 9-first thrust surface, 10-second thrust surface, 11-guide surface, 12-limiting ring.

[0025] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. 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 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 utility model.

[0030] Implementation Method 1

[0031] Reference Figures 1 to 3 This embodiment is an optional embodiment of the present application, which discloses a pipe connection device, including a first joint 1 and a second joint 2, one end of the first joint 1 is integrally connected with a plug pipe 3, and the other end of the first joint 1 is provided with a plug joint 4;

[0032] One end of the second connector 2 is also integrally connected with a plug-in tube 3, and the other end of the second connector is provided with a plug-in hole 5;

[0033] 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;

[0034] 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 zone 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.

[0035] A first thrust surface 9 with a conical structure is also provided at the bottom of the plug hole 5, and a second thrust surface 10 is provided on the plug connector 4. The first thrust surface 9 and the second thrust surface 10 have the same taper. After installation, the first thrust surface 9 and the second thrust surface 10 are completely fitted together;

[0036] A mounting groove 8 is also provided on the second thrust surface 10, and a sealing assembly is also provided between the second thrust surface 10 and the first thrust surface 9, wherein the sealing assembly comprises a sealing ring 8 using a rubber support, and the sealing ring 8 is embedded in the mounting groove 8; it should be noted that 1 to 3 mounting grooves 8 can be provided, and the mounting grooves 8 are arranged in sequence along the axial direction of the plug connector 4;

[0037] After the first joint 1 and the second joint 2 are completely installed, the cross section of the plug joint 4 abuts against the limit surface, and the first thrust surface 9 and the second thrust surface 10 are completely fitted together, the sealing ring 8 will be deformed by pressure, and the entire installation groove 8 will be completely filled, and the upper part of the sealing ring 8 will be tightly fitted with the first thrust surface 9;

[0038] On the one hand, the above structure makes the contour line of the joint area of ​​the first joint 1 and the second joint 2 more tortuous, which is beneficial to improving the sealing performance; on the other hand, after the first thrust surface 9 and the second thrust surface 10 set by the conical structure are installed, the first thrust surface 9 will apply an extrusion force perpendicular to the second thrust surface 10 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 by the conical structure will cause the installation groove 8 to be located inside the outer surface of the plug-in joint 4, thereby avoiding the interference of the sealing ring with the plug-in installation of the first joint 1 and the second joint 2, which is beneficial to reducing the difficulty of installation of the first joint 1 and the second joint 2.

[0039] A limit stop ring 12 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 12 is the same as the outer diameter of the external pipe, and the end faces of the two limit stop rings 12 facing each other abut against each other.

[0040] The setting of the limit stop ring 12 is beneficial to improving the structural strength of the first joint 1 and the second joint 2 on the one hand, and can further optimize the contour curve of the splicing area of ​​the first joint 1 and the second joint 2 on the other hand, thereby improving the sealing of the connection area between the first joint 1 and the second joint 2.

[0041] The pipe connection device further comprises a hot melt assembly, wherein the hot melt assembly comprises a plurality of heating wires, and each of the heating wires 7 is sequentially embedded in the plug-in tube 3 along the axial direction of the plug-in tube 3;

[0042] It should be noted that the heating wire is a metal wire, preferably made of brass wire or copper wire;

[0043] On the one hand, the heating wire 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 hot melt connection, thereby improving the connection strength as much as possible and avoiding water seepage in the joint.

[0044] A guide surface 12 with a conical structure 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.

[0045] 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.

[0046] When the connection device of 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 is plugged and connected to the second joint 2, and after the connection is completed, the entire connection device is placed in an alternating electric field, and 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 hot melt connection;

[0047] Compared with the existing technology, the hot melt assembly can realize the rapid hot melt connection of the plug-in area, which is beneficial to improve the connection efficiency of the pipeline; at the same time, compared with the traditional adhesive bonding method, the hot melt connection realizes the melting and mixing of the pipeline and the connection device materials, and improves the connection strength between the connection device and the external pipeline as much as possible, which is beneficial to prevent the occurrence of water seepage in the joint;

[0048] Secondly, the sealing component and the hot melt component can achieve a sealed connection between the connecting area of ​​the first joint and the second joint, thereby ensuring the airtightness of the connecting device and avoiding leakage of the connecting device.

[0049] 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 the like in the pipe, and extending the service life of the pipe.

[0050] The above are only preferred embodiments of the present application, and are not intended to 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 comprises a first connector (1); A second joint (2), the second joint (2) being coaxially plug-connected with 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, the hot melt assembly being sleeved on each of the plug tubes (3); A sealing component is arranged 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.

2. A pipe connecting device according to claim 1, characterized in that: 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 fit the plug hole (5).

3. A pipe connection device according to claim 2, 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).

4. A pipe connection device according to claim 2, characterized in that: The sealing assembly comprises a sealing ring (7); the plug connector (4) is provided with a mounting groove (8); the sealing ring (7) is sleeved in the mounting groove (8); the sealing ring (7) is tightly fitted to the inner wall of the plug hole (5).

5. A pipe connection device according to claim 4, characterized in that: A first thrust surface (9) with a conical structure is provided at the bottom of the plug hole (5), a second thrust surface (10) is provided on the plug connector (4), the mounting groove (8) is provided on the second thrust surface (10), and the first thrust surface (9) and the second thrust surface (10) have the same taper.

6. A 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 (11) in a conical structure.

7. A 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 (12); the outer diameter of the two limit stop rings (12) is the same as the outer diameter of the external pipe; and the end faces of the two limit stop rings (12) that face each other abut against each other.

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