Telescopic electric smelting pipe fitting

Abstract

The utility model discloses a telescopic electric melting pipe fitting which is composed of a fixed pipe fitting and a movable pipe fitting, the fixed pipe fitting is provided with a fixed hot melting bell mouth part and an embedded resistance coil A and is connected with an external binding post through a positive electrode metal sheet and a negative electrode metal sheet in a sliding groove, and the movable pipe fitting comprises a movable hot melting bell mouth part and an embedded resistance coil B; one end of the movable pipe fitting is fixedly connected with a guide ring, a resistance coil C is arranged in the guide ring, a sliding convex part on the guide ring is in sliding fit with a sliding groove in the fixed pipe fitting, and the positive metal contact and the negative metal contact abut against the positive metal sheet and the negative metal sheet to achieve circuit conduction. The pipe fittings and the pipelines and the pipe fittings are integrally connected in a hot melting mode, telescopic adjustment and stable sealing are achieved, and the flexibility and reliability of pipeline connection are optimized through the design.

Description

Technical Field

[0001] This utility model relates to the field of electrofusion fittings technology, specifically a telescopic electrofusion fitting. Background Technology

[0002] Electrofusion fittings, as a common type of pipe connection component, are widely used in water supply and drainage, gas transmission and other fields. Traditional electrofusion fittings usually adopt a fixed length structure and achieve heat fusion connection with the pipe through the heating of the internal resistance coil. However, in actual construction, due to errors in pipe spacing or limitations of on-site installation conditions, fixed-length electrofusion fittings are often difficult to adapt to connection requirements of different lengths, resulting in installation difficulties, and even requiring additional connectors or adjustments to the pipe layout, which increases construction costs and complexity. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a telescopic electrofusion fitting with adjustable connection length and excellent connection stability.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a telescopic electrofusion fitting, including a fixed fitting and a moving fitting. One end of the fixed fitting is provided with a fixed heat fusion socket. A resistance coil A is fixedly connected inside the fixed heat fusion socket. Multiple sets of sliding grooves are provided on the inner wall of the fixed fitting. A positive electrode metal sheet is fixedly connected in one set of sliding grooves, and a negative electrode metal sheet is fixedly connected in another set of sliding grooves. The positive electrode metal sheet is connected to one end wire of the resistance coil A, and the negative electrode metal sheet is connected to the other end wire of the resistance coil A. A positive terminal and a negative terminal are fixedly connected on the fixed fitting. The positive terminal is connected to the positive electrode metal sheet wire, and the negative terminal is connected to the negative electrode metal sheet wire.

[0005] One end of the moving tube is provided with a moving hot-melt socket, and a resistance coil B is fixedly connected inside the moving hot-melt socket. The other end of the moving tube is fixedly connected with a guide ring, and a resistance coil C is fixedly connected inside the guide ring. Each set of sliding grooves on the guide ring is provided with a sliding protrusion. One end of the moving tube is located inside the fixed tube, and the sliding protrusion is slidably connected in the sliding groove. A positive metal contact is fixedly connected to one set of sliding protrusions, and a negative metal contact is fixedly connected to one set of sliding protrusions. The positive metal contact abuts against the positive metal sheet, and the negative metal contact abuts against the negative metal sheet. One end of the resistance coils B and C is connected to the positive metal contact wire, and the other end of the resistance coils B and C is connected to the negative metal contact wire.

[0006] In the above technical solution, a sealing ring is fixedly connected to the moving pipe between the guide ring and the moving hot melt socket. The sealing ring is provided with a sealing protrusion that cooperates with the sliding groove, and the sealing protrusion is located in the sliding groove.

[0007] In the above technical solution, both the fixed hot-melt socket and the moving hot-melt socket have protrusions with a grid structure on their inner walls.

[0008] In the above technical solution, an RFID tag is fixedly connected inside the fixed pipe fitting.

[0009] In the above technical solution, the guide ring and the moving tube are integrated into one structure.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. Through the cooperation of the sliding groove and the guide ring, the moving pipe can freely extend and retract within the fixed pipe, thereby adjusting the length of the entire pipe and making it more flexible. This avoids the problem of inconvenience in connecting two sets of pipes due to insufficient length. At the same time, the dynamic contact between the positive and negative metal plates and the positive and negative metal contacts maintains the circuit connection. This design avoids the breakage problem caused by wire entanglement or stretching of traditional telescopic pipes, and takes into account both mechanical extension and stable power supply.

[0012] 2. One pipe is inserted into the fixed electrofusion socket, and another pipe is inserted into the moving electrofusion socket. Then, the positive and negative terminals are connected to the power supply, so that current can be supplied to the resistance coils A and B, which generate heat. This allows both the fixed and moving electrofusion sockets to be electrofused with the pipes. The fixed and moving pipe fittings are also electrofused together using the heat generated by the resistance coil C. This fixes the fixed and moving pipe fittings in place, resulting in superior stability after the pipes are connected. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the fixed pipe fitting in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the motion tube in this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the present invention.

[0017] Figure 5 This is a schematic diagram of the wire connection structure of the positive terminal and the negative terminal in this utility model.

[0018] In the diagram: 100 Fixed pipe fitting, 101 Fixed heat fusion socket, 102 Resistance coil A, 103 Sliding groove, 104 Positive metal sheet, 105 Negative metal sheet, 106 Positive terminal, 107 Negative terminal, 200 Moving pipe fitting, 201 Moving heat fusion socket, 202 Resistance coil B, 203 Guide ring, 204 Resistance coil C, 205 Sliding protrusion, 206 Positive metal contact, 207 Negative metal contact, 300 Sealing ring, 301 Sealing protrusion, 400 Protrusion, 500 RFID tag. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please see Figures 1-5 A retractable electrofusion fitting includes a fixed fitting 100 and a movable fitting 200. One end of the fixed fitting 100 is provided with a fixed heat fusion socket 101, and a resistance coil A102 is fixedly connected inside the fixed heat fusion socket 101. In addition, multiple sets of sliding grooves 103 are provided on the inner wall of the fixed fitting 100. A positive electrode metal sheet 104 is fixedly connected in one set of sliding grooves 103, and a negative electrode metal sheet 105 is fixedly connected in another set of sliding grooves 103. The positive electrode metal sheet 104 is connected to one end wire of the resistance coil A102, and the negative electrode metal sheet 105 is connected to the other end wire of the resistance coil A102. Furthermore, a positive terminal 106 and a negative terminal 107 are fixedly connected on the fixed fitting 100. The positive terminal 106 is connected to the positive electrode metal sheet 104 wire, and the negative terminal 107 is connected to the negative electrode metal sheet 105 wire.

[0021] Furthermore, one end of the moving tube 200 is provided with a moving heat fusion socket 201, and a resistance coil B202 is fixedly connected inside the moving heat fusion socket 201. The other end of the moving tube 200 is fixedly connected with a guide ring 203, and a resistance coil C204 is fixedly connected inside the guide ring 203. In order to ensure excellent stability between the moving tube 200 and the guide ring 203, the guide ring 203 and the moving tube 200 adopt an integral structure.

[0022] Furthermore, each set of sliding grooves 103 on the guide ring 203 is provided with a sliding protrusion 205. One end of the moving tube 200 is located inside the fixed tube 100, and the sliding protrusion 205 is slidably connected inside the sliding groove 103. In this way, the moving tube 200 can move linearly inside the fixed tube 100. In addition, a positive metal contact 206 is fixedly connected to one set of sliding protrusions 205, and a negative metal contact 207 is fixedly connected to one set of sliding protrusions 205. Here, the positive metal contact 206 abuts against the positive metal plate 104, and the negative metal contact 207 abuts against the negative metal plate 105. Furthermore, one end of the resistor coil B202 and the resistor coil C204 is connected to the positive metal contact 206 wire, and the other end of the resistor coil B202 and the resistor coil C204 is connected to the negative metal contact 207 wire.

[0023] Optimally, a sealing ring 300 is fixedly connected on the moving pipe fitting 200 between the guide ring 203 and the moving hot-melt socket 201. The sealing ring 300 is provided with a sealing protrusion 301 that matches the sliding groove 103. The sealing protrusion 301 is located in the sliding groove 103. Here, the sealing ring 300 can be a rubber sealing ring 300. Through the design of the sealing ring 300, the sealing performance between the fixed pipe fitting 100 and the moving pipe fitting 200 is enhanced, thereby preventing liquid leakage.

[0024] Furthermore, both the fixed hot melt socket 101 and the moving hot melt socket 201 have protrusions 400 with a grid structure on their inner walls, which can increase the contact area of ​​the molten plastic and improve the connection strength of the interface.

[0025] Furthermore, the fixed pipe fitting 100 is internally connected to an RFID tag 500, which can store pipe fitting parameters (such as specifications, welding temperature curves, etc.) to facilitate data retrieval during construction by scanning the code, thereby achieving precise temperature control and quality traceability.

[0026] In summary, this embodiment discloses a retractable electrofusion fitting, which is mainly used for connecting two sets of pipes. Specifically, one set of pipes can be inserted into the fixed heat fusion socket 101, and then the sliding fitting 200 allows the other set of pipes to be inserted into the moving heat fusion socket 201. Then, the positive terminal 106 and the negative terminal 107 are electrically connected to an external power supply. After the power is turned on, current enters the positive metal plate 104 and the negative metal plate 105, and then the current enters the resistance coil A102. At the positive metal contact... Under the action of point 206 and negative metal contact 207, current also enters resistance coil B202 and resistance coil C204. Thus, resistance coil A102 and resistance coil B202 generate heat, thereby making the fixed electrofusion socket and the moving electrofusion socket heat-fused to the pipe. The fixed pipe fitting 100 and the moving pipe fitting 200 are also heat-fused together by the heat generated by resistance coil C204. Finally, the two sets of pipes and the fixed pipe fitting 100 and the moving pipe fitting 200 form an integrated structure.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A telescopic electrofusion fitting comprising a stationary fitting (100) and a moving fitting (200), characterized in that: One end of the fixed pipe fitting (100) is provided with a fixed hot melt socket part (101), the inside of the fixed hot melt socket part (101) is fixedly connected with a resistance coil A (102), a plurality of groups of sliding grooves (103) are arranged on the inner wall of the fixed pipe fitting (100), one group of the sliding grooves (103) is fixedly connected with a positive metal sheet (104), one group of the sliding grooves (103) is fixedly connected with a negative metal sheet (105), one end of the positive metal sheet (104) is connected with a positive terminal wire of the resistance coil A (102), the other end of the negative metal sheet (105) is connected with a negative terminal wire of the resistance coil A (102), the fixed pipe fitting (100) is fixedly connected with a positive terminal post (106) and a negative terminal post (107), the positive terminal post (106) is connected with the positive metal sheet (104) by a wire, and the negative terminal post (107) is connected with the negative metal sheet (105) by a wire. One end of the fixed pipe fitting (100) is provided with a fixed hot melt socket part (101), the inside of the fixed hot melt socket part (101) is fixedly connected with a resistance coil A (102), a plurality of groups of sliding grooves (103) are arranged on the inner wall of the fixed pipe fitting (100), one group of the sliding grooves (103) is fixedly connected with a positive metal sheet (104), one group of the sliding grooves (103) is fixedly connected with a negative metal sheet (105), one end of the positive metal sheet (104) is connected with a positive terminal wire of the resistance coil A (102), the other end of the negative metal sheet (105) is connected with a negative terminal wire of the resistance coil A (102), the fixed pipe fitting (100) is fixedly connected with a positive terminal post (106) and a negative terminal post (107), the positive terminal post (106) is connected with the positive metal sheet (104) by a wire, and the negative terminal post (107) is connected with the negative metal sheet (105) by a wire.

2. A telescoping electrically fused pipe section according to claim 1, characterized in that: The fixed hot melt socket part (101) and the motion hot melt socket part (201) are provided with a convex part (400) of a grid structure on the inner wall.

3. A telescoping electrically fused pipe section according to claim 1, wherein: The fixed pipe fitting (100) is fixedly connected with an RFID tag (500) inside.

4. A telescoping electrically fused pipe section according to claim 1, wherein: The guide ring (203) and the motion pipe fitting (200) adopt an integral structure.

5. A telescoping electrically fused pipe section according to claim 1, wherein: The fixed hot melt socket part (101) and the motion hot melt socket part (201) are provided with a convex part (400) of a grid structure on the inner wall.

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