An enhanced electrically heated shrink sleeve structure

Abstract

The utility model discloses a reinforced electric heat melting sleeve structure, including upper clamp, the lower end of upper clamp swing is equipped with lower clamp, the inner wall of upper clamp and lower clamp all is equipped with resistance wire screen, both ends of upper clamp all are equipped with first connecting block, both ends of lower clamp all are equipped with second connecting block, all are equipped with the threaded hole on first connecting block and second connecting block, the inside of threaded hole all is equipped with connecting screw, the upper end of first connecting block all is fixedly equipped with baffle ring, the upper end of connecting screw all is located the inside of baffle ring, thereby, the user can make the dismounting tool pass through the limit ring and contact with the internal hexagonal groove on connecting screw, then can rotate connecting screw to make its bottom separate from threaded hole, at this moment can disassemble upper clamp and lower clamp, and because connecting screw is located the inside of baffle ring and limit ring, is more difficult to lose to disassemble, and it is convenient for long -term use.

Description

Technical Field

[0001] This utility model relates to the field of electrofusion sleeve technology, and more specifically, to an enhanced electrofusion sleeve structure. Background Technology

[0002] Electrofusion sleeves are pipe fittings used to connect jacketed pipes together by electrofusion after PE sheets are coated with mesh, bent, and rolled. Electrofusion sleeves are one of the main methods of pipe connection. The working principle of an electrofusion sleeve is as follows: Heating wires are embedded in the inner wall of the sleeve. During use, the heating wires are connected to an electrofusion welding machine through two electrodes exposed on the outside of the sleeve, and electricity is applied. The heating effect of the heating wires melts the hot melt adhesive inside the sleeve, which then adheres to the end of the PE pipe, achieving the purpose of pipe connection.

[0003] Traditional electrofusion sleeve structures are mostly fixed to PE pipes using bolts. Because the bolt heads and nuts are small, they are easy to lose after disassembly, and replacing them is also troublesome, affecting subsequent normal installation.

[0004] Furthermore, after the electrothermal sleeve is no longer in use, its electrodes are usually directly exposed to the outside world, which makes it easy for dust from the outside world to enter the inner wall of the electrode installation area, affecting the normal installation of the electrodes. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides an enhanced electrothermal fusion sleeve structure to solve the technical problem mentioned in the background art that the traditional electrothermal fusion sleeve structure is mostly fixed to the PE pipe by bolts. Due to the small size of the bolt head and nut, this fixing method is prone to loss after disassembly.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an enhanced electrothermal fusion sleeve structure, including an upper clamp, a lower clamp movably disposed at the lower end of the upper clamp, resistance wire mesh disposed on the inner walls of both the upper and lower clamps, a first connecting block disposed at both ends of the upper clamp, and a second connecting block disposed at both ends of the lower clamp, threaded holes being provided on both the first and second connecting blocks, connecting screws being disposed inside the threaded holes, a retaining ring being fixedly disposed on the upper end face of each of the first connecting blocks, the upper ends of the connecting screws being located inside the retaining rings, a limiting ring being fixedly disposed on the upper end of each retaining ring, the connecting screws being located at the bottom of the limiting rings, and electrodes being disposed on the outer walls of both the upper and lower clamps on both sides, the electrodes being electrically connected to the resistance wire mesh.

[0009] The present invention is further configured such that a square cylinder is fixedly provided on the outer side of the electrode and on the outer wall of the upper clamp and the lower clamp, a threaded cylinder is fixedly provided at one end of the square cylinder, and a protective sleeve is provided on one side of the threaded cylinder. One end of the protective sleeve is threadedly connected to the outer wall of the threaded cylinder, which facilitates the protection of the electrode.

[0010] The present invention is further configured such that all electrodes are located inside the protective sleeve.

[0011] The present invention is further configured such that a fixing block is fixedly provided on the outer wall of the upper clamp and on both the front and rear sides, and an adjustment hole is provided on each fixing block. An adjustment column is provided inside each adjustment hole. An anti-slip block is rotatably provided at one end of each adjustment column, and a handwheel is fixedly provided at the other end, so as to further increase the stability of the device when connected.

[0012] The present invention is further provided with rubber protrusions at the bottom of the anti-slip block, which facilitates increasing the friction between the anti-slip block and the PE pipe.

[0013] The present invention is further configured such that a positioning block is provided on the lower end face of the upper clamp, and a positioning groove is correspondingly provided on the upper end face of the lower clamp, and the positioning block is located inside the positioning groove, which facilitates the positioning and installation of the upper clamp and the lower clamp.

[0014] The present invention is further provided that one end of each connecting screw is provided with an internal hexagonal groove, which is located inside the limiting ring, so as to facilitate the assembly and disassembly of the connecting screw.

[0015] The present invention is further configured such that the connecting ends of the electrodes all extend out of the square tube and are located on the outside of the square tube, so as to facilitate the connection of the electrodes to an external power source.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an enhanced electrothermal fusion sleeve structure, which has the following beneficial effects:

[0018] 1. By setting threaded holes, connecting screws, retaining rings, and limiting rings, users can pass disassembly tools through the limiting rings and into the internal hexagonal slots on the connecting screws. Then, the connecting screws can be rotated to disengage their bottoms from the threaded holes. At this point, the upper and lower clamps can be disassembled. Since the connecting screws are located inside the retaining rings and limiting rings, they are less likely to be lost during disassembly, making them convenient for long-term use.

[0019] 2. By setting up electrodes, a square cylinder, and a protective sleeve, the protective sleeve can be installed on the outside of the threaded cylinder when the device is not in use or being carried, so that it covers the electrodes. At this time, the electrodes will be located inside the protective sleeve, reducing the adhesion of external dust and facilitating subsequent normal installation.

[0020] 3. By setting a fixed block, adjusting hole, adjusting column and anti-slip block, the user can turn the handwheel to make the adjusting column drive the anti-slip block to move, so that the rubber protrusion at the bottom of the anti-slip block abuts against the outer wall of the PE pipe, thereby further increasing the stability of the connection between the upper and lower clamps and preventing displacement during heating, which would affect normal use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an enhanced electrothermal fusion sleeve structure in its unused state.

[0022] Figure 2 Exploded view of the installation of the upper clamp, lower clamp, and connecting screws;

[0023] Figure 3 This is a schematic diagram showing the positions of the first connecting block, threaded hole, retaining ring, and limiting ring on the first clamp.

[0024] Figure 4 A schematic diagram showing the positions of the anti-slip block, handwheel, and rubber protrusions on the adjustment column;

[0025] Figure 5 This is a schematic diagram of the components of the protective sleeve.

[0026] In the diagram: 1. Upper clamp; 2. Lower clamp; 3. Resistance wire mesh; 4. First connecting block; 5. Second connecting block; 6. Threaded hole; 7. Connecting screw; 8. Retaining ring; 9. Limiting ring; 10. Electrode; 11. Square cylinder; 12. Threaded cylinder; 13. Protective sleeve; 14. Fixing block; 15. Adjusting hole; 16. Adjusting column; 17. Anti-slip block; 18. Handwheel; 19. Rubber protrusion; 20. Positioning block; 21. Positioning groove; 22. Internal hexagonal groove. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 An enhanced electrothermal fusion sleeve structure includes an upper clamp 1, a lower clamp 2 movably mounted at the lower end of the upper clamp 1, resistance wire mesh 3 mounted on the inner walls of both the upper clamp 1 and the lower clamp 2, a first connecting block 4 mounted at both ends of the upper clamp 1, and a second connecting block 5 mounted at both ends of the lower clamp 2, threaded holes 6 on both the first connecting block 4 and the second connecting block 5, and connecting screws 7 mounted inside the threaded holes 6, a retaining ring 8 fixedly mounted on the upper end face of the first connecting block 4, the upper ends of the connecting screws 7 being located inside the retaining ring 8, a limiting ring 9 fixedly mounted on the upper end of the retaining ring 8, and the connecting screws 7 being located at the bottom of the limiting ring 9, electrodes 10 mounted on the outer walls of the upper clamp 1 and the lower clamp 2 on both sides, the electrodes 10 being electrically connected to the resistance wire mesh 3, and an internal hexagonal groove 22 mounted on one end of the connecting screws 7 being located inside the limiting ring 9.

[0031] In this embodiment, a square tube 11 is fixedly provided on the outer side of the electrode 10 and on the outer wall of the upper clamp 1 and the lower clamp 2. A threaded tube 12 is fixedly provided at one end of the square tube 11. A protective sleeve 13 is provided on one side of the threaded tube 12. One end of the protective sleeve 13 is threadedly connected to the outer wall of the threaded tube 12. The electrode 10 is located inside the protective sleeve 13. The connecting end of the electrode 10 extends out of the square tube 11 and is located on the outer side of the square tube 11.

[0032] More specifically, the user can pass the disassembly tool through the limiting ring 9 and contact the internal hexagonal groove 22 on the connecting screw 7, and then rotate the connecting screw 7 to disengage its bottom from the threaded hole 6. At this time, the upper clamp 1 and the lower clamp 2 can be disassembled. Since the connecting screw 7 is located inside the retaining ring 8 and the limiting ring 9, it is less likely to be lost during disassembly, which is convenient for long-term use. When the device is not in use or being carried, the protective sleeve 13 can be installed on the outside of the threaded cylinder 12 to shield the electrode 10. At this time, the electrode 10 will be located inside the protective sleeve 13 to reduce the adhesion of external dust and facilitate subsequent normal installation.

[0033] Please see Figure 1 and Figure 4As an embodiment for further fixing the electrothermal sleeve structure: fixing blocks 14 are fixed on the outer wall of the upper clamp 1 and on both the front and rear sides. Each fixing block 14 has an adjustment hole 15. Each adjustment hole 15 has an adjustment column 16 inside. One end of each adjustment column 16 is rotatably equipped with an anti-slip block 17, and the other end is fixed with a handwheel 18. The bottom of each anti-slip block 17 is equipped with rubber protrusions 19.

[0034] Specifically, after connecting the device to the PE pipe, the adjusting column 16 can be moved by rotating the handwheel 18 to move the anti-slip block 17, so that the rubber protrusion 19 at the bottom of the anti-slip block 17 abuts against the outer wall of the PE pipe, thereby further increasing the stability of the connection between the upper clamp 1 and the lower clamp 2 and preventing displacement during heating, which would affect normal use.

[0035] Please refer to Figure 2 As a further embodiment for positioning and installing the upper clamp 1 and the lower clamp 2: the lower end face of the upper clamp 1 is provided with a positioning block 20, and the upper end face of the lower clamp 2 is correspondingly provided with a positioning groove 21, with the positioning block 20 located inside the positioning groove 21.

[0036] Specifically, during installation, the positioning block 20 can be positioned in the positioning groove 21 to achieve the effect of positioning and installing the upper clamp 1 and the lower clamp 2, which facilitates subsequent use.

[0037] In summary, when using the entire device: first, install the upper clamp 1 and lower clamp 2 onto the upper and lower sides of the PE pipe and fix them with the connecting screws 7. Then, turn the handwheel 18 to move the adjusting column 16 to move the anti-slip block 17, so that the rubber protrusions 19 at the bottom of the anti-slip block 17 abut against the outer wall of the PE pipe, thereby further increasing the stability of the connection between the upper clamp 1 and lower clamp 2. Then, connect the external power supply to the electrode 10 so that the resistance wire mesh 3 melts the hot melt adhesive on the outer wall of the PE pipe, thereby achieving the effect of pipe connection. After use, the disassembly tool can be passed through the limit. The retaining ring 9 contacts the internal hexagonal groove 22 on the connecting screw 7, and then the connecting screw 7 can be rotated so that its bottom disengages from the threaded hole 6 on the second connecting block 5. At this time, the upper clamp 1 and the lower clamp 2 can be disassembled. Since the connecting screw 7 is located inside the retaining ring 8 and the limiting ring 9, it is less likely to be lost during disassembly, which is convenient for long-term use. The protective sleeve 13 can also be installed on the outside of the threaded cylinder 12 to shield the electrode 10. At this time, the electrode 10 will be located inside the protective sleeve 13 to reduce the adhesion of external dust and facilitate subsequent normal installation.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An enhanced electrothermal fusion sleeve structure, comprising an upper clamp (1), characterized in that: The lower end of the upper clamp (1) is movably provided with a lower clamp (2). The inner walls of the upper clamp (1) and the lower clamp (2) are provided with resistance wire mesh (3). The two ends of the upper clamp (1) are provided with a first connecting block (4). The two ends of the lower clamp (2) are provided with a second connecting block (5). The first connecting block (4) and the second connecting block (5) are provided with threaded holes (6). The threaded holes (6) are provided with connecting screws (7). The upper end of the first connecting block (4) is fixedly provided with a retaining ring (8). The upper end of the connecting screw (7) is located inside the retaining ring (8). The upper end of the retaining ring (8) is fixedly provided with a limiting ring (9). The connecting screw (7) is located at the bottom of the limiting ring (9). The outer walls of the upper clamp (1) and the lower clamp (2) are provided with electrodes (10) on both sides. The electrodes (10) are electrically connected to the resistance wire mesh (3).

2. The enhanced electrothermal fusion sleeve structure according to claim 1, characterized in that: A square tube (11) is fixedly provided on the outer side of the electrode (10) and on the outer wall of the upper clamp (1) and the lower clamp (2). A threaded tube (12) is fixedly provided at one end of the square tube (11). A protective sleeve (13) is provided on one side of the threaded tube (12). One end of the protective sleeve (13) is threadedly connected to the outer wall of the threaded tube (12).

3. The enhanced electrothermal fusion sleeve structure according to claim 2, characterized in that: The electrodes (10) are all located inside the protective sleeve (13).

4. The enhanced electrothermal fusion sleeve structure according to claim 1, characterized in that: Fixing blocks (14) are fixed on the outer wall of the upper clamp (1) and on both the front and rear sides. Each fixing block (14) has an adjustment hole (15). Each adjustment hole (15) has an adjustment column (16) inside. One end of each adjustment column (16) is rotatably equipped with an anti-slip block (17), and the other end is fixedly equipped with a handwheel (18).

5. The enhanced electrothermal fusion sleeve structure according to claim 4, characterized in that: The bottom of each anti-slip block (17) is provided with rubber protrusions (19).

6. The enhanced electrothermal fusion sleeve structure according to claim 1, characterized in that: The lower end face of the upper clamp (1) is provided with a positioning block (20), and the upper end face of the lower clamp (2) is provided with a positioning groove (21) corresponding to it. The positioning block (20) is located inside the positioning groove (21).

7. The enhanced electrothermal fusion sleeve structure according to claim 1, characterized in that: One end of each connecting screw (7) is provided with an internal hexagonal groove (22), which is located inside the limiting ring (9).

8. The enhanced electrothermal fusion sleeve structure according to claim 2, characterized in that: The connecting ends of the electrodes (10) all extend out of the square tube (11) and are located on the outside of the square tube (11).

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