Plastic pipe connecting structure and pipe joint thereof

Abstract

The utility model relates to a plastic pipe connecting structure which comprises a first pipe section and a second pipe section, the first pipe section and the second pipe section are connected together through a pipe joint, the pipe joint comprises a main body straight pipe, and sleeves are arranged on the outer sides of the two ends of the main body straight pipe in a sleeved mode. Gaps are formed between the two sleeves and the main body straight pipe, the two sleeves and the main body straight pipe are coaxial, the opposite ends of the two sleeves are provided with inward turning edges, the two sleeves and the main body straight pipe are integrally arranged through the respective inward turning edges, and the two ends of the main body straight pipe extend out of the corresponding sleeves; the first pipe section and the second pipe section are arranged at the two ends of the main straight pipe in a sleeving mode respectively and stretch into the corresponding sleeves, and the first pipe section and the second pipe section are connected with the corresponding sleeves in a hot melting mode. The sleeves are arranged on the outer sides of the two ends of the main straight pipe in a sleeved mode, the first pipe section and the second pipe section are connected with the corresponding sleeves in a hot melting mode, the main straight pipe does not need to be heated in the connecting process, and the inner diameter of the main straight pipe cannot be changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plastic pipe connecting structure for connecting a heat source and a floor heating pipeline, and a joint protrusion of the plastic pipe connecting structure, and belongs to the technical field of floor heating pipelines. BACKGROUND

[0002] Floor heating, also known as floor radiant heating, is a heating method in which hot water with a temperature not higher than 60 DEG C is circulated in a coil system embedded in a floor to heat the entire floor and radiate heat uniformly to a room through the floor.

[0003] The floor heating coil system needs to be connected to a heat source, which continuously provides hot water to the floor heating coil system. The floor heating coil system is formed by a pipeline in a ring shape. The heat source and the floor heating coil system, and different pipelines of the floor heating coil system are connected by pipe joints. The pipeline and the pipe joint of the floor heating coil system are usually made of plastic. When connecting the pipeline and the pipe joint of the floor heating coil system, the end of the pipeline and the end of the pipe joint need to be heated respectively. Then, the molten end of the pipeline is sleeved on the end of the molten pipe joint and is extruded to fully combine the two. After cooling, the two are tightly combined together, so that no water or air leaks when the hot water circulates in the coil system.

[0004] However, when the pipeline is connected by the pipe joint, the end of the pipeline and the end of the pipe joint will be deformed under the action of pressure when they are extruded to fully combine. The inner diameter of the end of the pipe joint will be significantly reduced due to the pressure. As a result, the flow of the circulating water in the pipe joint will be hindered, the water flow will be reduced, and the floor heating will not be hot. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a plastic pipe connecting structure and a pipe joint thereof to solve the problem of the reduction of the inner diameter of the plastic pipe connecting structure after connecting the plastic pipeline.

[0006] In order to solve the above problem, the plastic pipe connecting structure and the pipe joint thereof adopt the following technical scheme: a plastic pipe connecting structure, comprising a first pipe segment and a second pipe segment, the first pipe segment and the second pipe segment are connected together by a pipe joint, the pipe joint comprises a main straight pipe, the outer side of both ends of the main straight pipe is sleeved with a sleeve pipe, there is a gap between the two sleeve pipes and the main straight pipe, and the two sleeve pipes and the main straight pipe have the same axis, the opposite ends of the two sleeve pipes have an inward turning edge, the two sleeve pipes are integrally arranged with the main straight pipe through the respective inward turning edges, both ends of the main straight pipe extend out of the corresponding sleeve pipes, the first pipe segment and the second pipe segment are sleeved at both ends of the main straight pipe and extend into the corresponding sleeve pipes, and the first pipe segment and the second pipe segment are connected with the corresponding sleeve pipes by heat melting.

[0007] The connection between the inward-curved edge and the main straight tube has a rounded corner.

[0008] The connection between the inward-curved edge and the sleeve has a rounded corner.

[0009] A pipe connector for connecting plastic pipes includes a main straight pipe, with sleeves fitted on the outer sides of both ends of the main straight pipe. There is a gap between the two sleeves and the main straight pipe, and the two sleeves are coaxial with the main straight pipe. The opposite ends of the two sleeves have inward flanges. The two sleeves are integrally set with the main straight pipe through their respective inward flanges, and the two ends of the main straight pipe extend out of the corresponding sleeves.

[0010] The connection between the inward-curved edge and the main straight tube has a rounded corner.

[0011] The connection between the inward-curved edge and the sleeve has a rounded corner.

[0012] The plastic pipe connection structure of this utility model has sleeves fitted on both outer sides of the main straight pipe. There is a gap between the two sleeves and the main straight pipe, and the two sleeves are coaxial with the main straight pipe. The opposite ends of the two sleeves have inward flanges. The two sleeves are integrally set with the main straight pipe through their respective inward flanges. The two ends of the main straight pipe extend out of the corresponding sleeves. The first pipe segment and the second pipe segment are respectively fitted on the two ends of the main straight pipe and extend into the corresponding sleeves. The first pipe segment and the second pipe segment are connected to the corresponding sleeves by heat fusion. In this way, when the heat-fused first pipe segment and / or second pipe segment are connected to the corresponding heat-fused sleeve by extrusion, the main straight pipe is not heated or extruded, so the inner diameter of the main straight pipe is not changed and the flow rate of the internal circulating water is not affected.

[0013] The pipe connector of this utility model includes a main straight pipe, with sleeves fitted on the outer sides of both ends of the main straight pipe. There is a gap between the two sleeves and the main straight pipe, and the two sleeves are coaxial with the main straight pipe. The opposite ends of the two sleeves have inward flanges. The two sleeves are integrally set with the main straight pipe through their respective inward flanges. The two ends of the main straight pipe extend out of the corresponding sleeves. In use, the two pipes to be connected are heat-fused to the two sleeves respectively. When the heat-fused pipes to be connected are connected to the heat-fused sleeves by compression, there is no need to heat and compress the main straight pipe, so the inner diameter of the main straight pipe will not be changed, and the flow rate of the internal circulating water will not be affected. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below:

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 The left view;

[0017] Figure 3 is Figure 2 A-A cross-sectional view of the schematic diagram of the pipe joint in

[0018] Figure 4 is Figure 1 The structural diagram of the pipe joint in

[0019] The figure is marked: 1, the first pipe section, 2, the second pipe section, 3, the pipe joint, 4, the main body straight pipe, 5, the sleeve pipe, 6, the inverting edge. DETAILED DESCRIPTION

[0020] In order to make the technical purpose, technical scheme and beneficial effect of the utility model clearer, the technical scheme of the utility model will be further explained below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. The components of the utility model embodiments described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] The specific embodiments of the plastic pipe connecting structure related by the utility model are in Figures 1-4The utility model relates to a pipe joint of plastic pipe connecting structure, which has a first pipe section 1 and a second pipe section 2, the first pipe section 1 and the second pipe section 2 are connected together through the pipe joint 3, the pipe joint 3 includes a main body straight pipe 4, the main body straight pipe 4 is used for intercommunication of the first pipe section 1 and the second pipe section 2, the liquid in the first pipe section 1 and the second pipe section 2 can flow each other, both ends of the main body straight pipe 4 are all sleeved with sleeve pipes 5, the gap between the two sleeve pipes 5 and the main body straight pipe 4 has and the two sleeve pipes 5 and the main body straight pipe 4 are coaxial, the gap between the two sleeve pipes 5 and the main body straight pipe 4 is used to accommodate the end of the first pipe section 1 or the second pipe section 2 when connecting, the opposite end of the two sleeve pipes 5 has an inturned edge 6, the two sleeve pipes 5 are integrally arranged with the main body straight pipe 4 through the respective inturned edges 6, the inturned edge 6 makes the two sleeve pipes 5 firmly fixed on the main body straight pipe 4, both ends of the main body straight pipe 4 extend out of the corresponding sleeve pipe 5, the first pipe section 1 and the second pipe section 2 are respectively sleeved at both ends of the main body straight pipe 4 and extend into the corresponding sleeve pipe 5, and the first pipe section 1 and the second pipe section 2 are connected with the corresponding sleeve pipe 5 through hot melting. Both ends of the main body straight pipe 4 extend out of the corresponding sleeve pipe 5, which is convenient for the operator to aim at the target when connecting the pipe joint 3 with the first pipe section 1 or the second pipe section 2, so that the first pipe section 1 or the second pipe section 2 after hot melting is accurately sleeved on the end of the main body straight pipe 4, and the coaxial arrangement of the two sleeve pipes 5 and the main body straight pipe 4 makes the gap between the two sleeve pipes 5 and the main body straight pipe 4 evenly distributed, which is convenient for the first pipe section 1 and the second pipe section 2 after hot melting to extend into the corresponding sleeve pipe 5. When in use, the operator first heats one sleeve pipe 5 and the first pipe section 1, then sleeves the first pipe section 1 after hot melting on the main body straight pipe 4 at the end of the sleeve pipe 5 after hot melting and inserts the first pipe section 1 into the sleeve pipe 5 after hot melting, and then respectively extrudes the first pipe section 1 and the sleeve pipe 5 after being sleeved together from both ends, so that the first pipe section 1 and the sleeve pipe 5 after hot melting are tightly combined together, and the combined part of the two is neither water-leaking nor air-leaking, then the second pipe section 2 is connected to the pipe joint 3 by the same method, and the first pipe section 1 and the second pipe section 2 are connected together by the pipe joint 3. Since the main body straight pipe 4 is not heated during the connecting process, the inner diameter of the main body straight pipe 4 does not change, and the flow rate of the circulating water in the main body straight pipe 4 is not affected.

[0022] Specifically, the connecting part of the inturned edge 6 and the main body straight pipe 4 has a round corner. The round corner can prevent stress concentration at the connecting part of the inturned edge 6 and the main body straight pipe 4, and enhance the firmness of the connecting part of the inturned edge 6 and the main body straight pipe 4.

[0023] Specifically, the connecting part of the inturned edge 6 and the sleeve pipe 5 has a round corner. The round corner can prevent stress concentration at the connecting part of the inturned edge 6 and the sleeve pipe 5, and enhance the firmness of the connecting part of the inturned edge 6 and the sleeve pipe 5.

[0024] The pipe joint of the plastic pipe connecting structure is characterized in that Figures 1-4In the pipe joint, the main straight pipe 4 is used to connect the first pipe section 1 and the second pipe section 2 together in use, the liquid in the first pipe section 1 and the second pipe section 2 can flow into each other, the first pipe section 1 and the second pipe section 2 are not part of the structure of the pipe joint 3, the outer side of both ends of the main straight pipe 4 is sleeved with a sleeve 5, the gap between the sleeve 5 and the main straight pipe 4 is coaxial with the main straight pipe 4, the gap between the sleeve 5 and the main straight pipe 4 is used to accommodate the end of the first pipe section 1 or the second pipe section 2 in connection, the opposite end of the sleeve 5 has an inner turning edge 6, the sleeve 5 is integrally arranged with the main straight pipe 4 through the respective inner turning edge 6, the inner turning edge 6 makes the sleeve 5 firmly fixed on the main straight pipe 4, and the both ends of the main straight pipe 4 extend out of the corresponding sleeve 5. The first pipe section 1 and the second pipe section 2 to be connected together are connected with the corresponding sleeve 5 by heat melting, the both ends of the main straight pipe 4 extending out of the corresponding sleeve 5 facilitates the operator to aim at the target when connecting the pipe joint 3 with the first pipe section 1 or the second pipe section 2, so that the first pipe section 1 or the second pipe section 2 after heat melting is accurately sleeved on the end of the main straight pipe 4, and the coaxiality of the sleeve 5 with the main straight pipe 4 makes the gap between the sleeve 5 and the main straight pipe 4 evenly distributed, so that the first pipe section 1 and the second pipe section 2 after heat melting are easily inserted into the corresponding sleeve 5. In use, the operator first heats one sleeve 5 and the first pipe section 1, then sleeves the heat-melted first pipe section 1 on the end of the heat-melted sleeve 5 of the main straight pipe 4 and inserts the first pipe section 1 into the heat-melted sleeve 5, and then respectively extrudes the sleeved first pipe section 1 and sleeve 5 from both ends, so that the heat-melted first pipe section 1 and sleeve 5 are tightly combined together, and the joint of the two does not leak water or air, and then the second pipe section 2 is connected to the pipe joint 3 by the same method, so that the first pipe section 1 and the second pipe section 2 are connected together by the pipe joint 3. Since the main straight pipe 4 is not heated during the connection process, the inner diameter of the main straight pipe 4 does not change, and the flow rate of the circulating water in the main straight pipe 4 is not affected.

[0025] Specifically, the connection between the inner turning edge 6 and the main straight pipe 4 has a round corner. The round corner can prevent stress concentration at the connection between the inner turning edge 6 and the main straight pipe 4, and enhance the firmness of the connection between the inner turning edge 6 and the main straight pipe 4.

[0026] Specifically, the connection between the inner turning edge 6 and the sleeve 5 has a round corner. The round corner can prevent stress concentration at the connection between the inner turning edge 6 and the sleeve 5, and enhance the firmness of the connection between the inner turning edge 6 and the sleeve 5.

[0027] The connection between the inner turning edge and the main straight pipe in the above embodiment has a round corner, which is an optimized technical solution, and can also not be provided in other embodiments.

[0028] The connection between the inner turning edge and the sleeve in the above embodiment has a round corner, which is an optimized technical solution, and can also not be provided in other embodiments.

[0029] Finally, it should be noted that the above examples are for illustration only and not to limit the technical solutions of the present application. Any equivalent replacement, modification or partial replacement of the present application without departing from the spirit and scope of the present application shall be covered within the scope of the present application.

Claims

1. A plastic pipe connection structure comprising a first pipe section and a second pipe section, the first pipe section and the second pipe section being connected together by a pipe joint, characterized in that, The pipe joint comprises a main straight pipe, both ends of the main straight pipe are sleeved with a sleeve pipe, the two sleeve pipes and the main straight pipe have gaps and are coaxial with the main straight pipe, opposite ends of the two sleeve pipes have inward turning edges, the two sleeve pipes are integrally arranged with the main straight pipe through the respective inward turning edges, both ends of the main straight pipe extend out of the corresponding sleeve pipes, a first pipe section and a second pipe section are respectively sleeved on both ends of the main straight pipe and extend into the corresponding sleeve pipes, and the first pipe section and the second pipe section are connected with the corresponding sleeve pipes through hot melting.

2. The plastic pipe joint structure according to claim 1, wherein The connecting part of the inward turning edge and the main straight pipe has a round corner.

3. The plastic pipe joint structure according to claim 2, wherein The connecting part of the inward turning edge and the sleeve pipe has a round corner.

4. A pipe joint of a plastic pipe connection structure, characterized by The pipe joint comprises a main straight pipe, both ends of the main straight pipe are sleeved with a sleeve pipe, the two sleeve pipes and the main straight pipe have gaps and are coaxial with the main straight pipe, opposite ends of the two sleeve pipes have inward turning edges, the two sleeve pipes are integrally arranged with the main straight pipe through the respective inward turning edges, both ends of the main straight pipe extend out of the corresponding sleeve pipes.

5. The pipe joint of a plastic pipe coupling structure according to claim 4, wherein The connecting part of the inward turning edge and the main straight pipe has a round corner.

6. The pipe joint of a plastic pipe coupling structure according to claim 5, wherein The connecting part of the inward turning edge and the sleeve pipe has a round corner.

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