An externally threaded live link

Abstract

The utility model discloses a male thread formula live loop joint, specifically relates to the field of live loop joint, including live loop female joint, the live loop female joint one end is processed with thread connecting groove, the thread connecting groove inside thread connection has live loop male joint, the live loop male joint outer wall fixedly covers and sets up the hexagon nut, the live loop male joint outer wall is processed with male thread, the hexagon nut outer wall covers and sets up the protective cover, the live loop female joint is close to live loop male joint one end and is set up annular insertion slot, the protective cover is close to annular insertion slot one end and inserts in the annular insertion slot inside. The utility model discloses a rubber sealing washer one can effectively enhance the sealing between live loop male joint and live loop female joint, simultaneously, the protective cover is in the protection joint connecting part, and the taper rubber ring of its outer wall setting can gradually tighten along with the insertion of protective cover, forms second heavy sealing, and this double sealing structure has improved the overall sealing reliability between live loop male joint and live loop female joint.

Description

Technical Field

[0001] This utility model relates to the field of slip-fitting joint technology, and more specifically to an external thread slip-fitting joint. Background Technology

[0002] A slip-on fitting is a commonly used pipe fitting that allows for easy installation and disassembly. An externally threaded slip-on fitting has an external thread at its end, allowing it to be directly screwed onto pipes or equipment with internal threads. Ordinary slip-on fittings lack external threads and are typically connected via welding or internal thread engagement. Therefore, externally threaded slip-on fittings, thanks to their threaded connection, eliminate the need for welding and can be assembled manually or with simple tools, significantly reducing installation time.

[0003] For example, a threaded slip-on connector with prior art publication number CN213479415U features an internal buffer device that enhances the overall pressure resistance of the connector, strengthens its stability, prevents deformation and breakage under external pressure and impact, and extends its service life. Simultaneously, threads are provided on the surfaces of both the front and rear ends, and protective rings are installed at the top of both ends to prevent accidental injury to the pipe opening or the skin of installers from burrs during installation and disassembly. Since the pipe opening is generally made of metal, a magnetic layer is provided at one end of the metal pipe to attract the pipe opening, strengthening the sealing and stability of the connection and preventing misalignment of the pipe and connector connection due to shaking during normal use, thus preventing damage. The hexagonal nut has anti-slip textures on its surface, making installation and disassembly more convenient and quick, with high anti-slip capability.

[0004] However, the existing technology described above still has the following problems in use: In traditional external threaded slip couplings, after connecting the slip coupling female connector and the slip coupling female connector, no protective structure is provided at the connection point. Impurities and moisture in the air can easily enter the gap, causing corrosion and affecting the connection's firmness. Based on this, the present invention provides an external threaded slip coupling with high sealing performance. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides an external threaded slip-on joint. A rubber sealing ring effectively enhances the sealing performance between the slip-on sub-joint and the slip-on female joint. Simultaneously, a protective cover is fitted around the outside of the slip-on sub-joint. While protecting the joint connection area, the tapered rubber ring on its outer wall gradually tightens as the protective cover is inserted, forming a second layer of seal. This double-seal structure significantly improves the overall sealing reliability between the slip-on sub-joint and the slip-on female joint, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external threaded slip joint, including a slip female joint, one end of which is machined with a threaded connecting groove, a slip sub-joint threadedly connected inside the threaded connecting groove, a hexagonal nut fixedly fitted on the outer wall of the slip sub-joint, the outer wall of the slip joint being machined with external threads, a protective cover fitted on the outer wall of the hexagonal nut, an annular slot being opened at one end of the slip female joint near the slip sub-joint, the protective cover being inserted into the annular slot at one end near the annular slot, a conical rubber ring being provided between the outer wall of the protective cover and the inner wall of the annular slot, and a rubber sealing ring being provided between the slip joint and the threaded connecting groove, the rubber sealing ring being used to provide a sealing effect between the slip joint and the threaded connecting groove.

[0007] In a preferred embodiment, the slip-on connector has an annular groove at one end near the threaded connection groove, and the rubber sealing ring is disposed inside the annular groove. The rubber sealing ring can be fixed in the annular groove by snap-fit ​​or adhesive bonding. Snap-fit ​​bonding is more convenient for subsequent replacement.

[0008] In a preferred embodiment, the protective cover is fixed with a plurality of evenly distributed positioning blocks at the end away from the slip-on female connector. The hexagonal nut has positioning grooves on both sides corresponding to the positioning blocks. The positioning blocks are located inside the positioning grooves. The protective cover is restricted by the plurality of positioning blocks, which can effectively maintain stability and can also improve the connection between the slip-on female connector and the slip-on female connector to a certain extent.

[0009] In a preferred embodiment, the outer wall of the protective cover has a plurality of mounting holes arranged in a ring array, and each mounting hole is provided with a fastening bolt. The protective cover is detachably installed together with a hexagonal nut by a plurality of fastening bolts. The use of fastening bolts to fix the protective cover makes it easy for operators to disassemble and replace the protective cover in the future.

[0010] In a preferred embodiment, a second rubber sealing ring is provided between the fastening bolt and the mounting hole, and the second rubber sealing ring can play a sealing role between the fastening bolt and the mounting hole.

[0011] In a preferred embodiment, the hexagonal nut has pry holes at both the top and bottom of its front end, and both pry holes are located on the axial outer side of the protective cover. The design of the pry holes makes it easy for operators to insert a pry bar into the pry holes to rotate the hexagonal nut and the slipknot joint, thereby improving the disassembly speed.

[0012] The technical effects and advantages of this utility model are as follows: This invention effectively enhances the sealing performance between the slip-on joint and the slip-on female joint through a rubber sealing ring. At the same time, a protective cover is provided on the outside of the slip-on joint. While protecting the connection part of the joint, the tapered rubber ring on the outer wall of the protective cover can gradually tighten as the protective cover is inserted, forming a second seal. This double sealing structure significantly improves the overall sealing reliability between the slip-on joint and the slip-on female joint. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the separation of the loose female connector and the loose male connector of this utility model; Figure 3 This is a schematic diagram showing the separation of the rubber sealing ring and the annular groove of this utility model; Figure 4 This is a cross-sectional view of the protective cover of this utility model; Figure 5 This is a schematic diagram of the slip-on connector of this utility model.

[0014] The attached diagram is labeled as follows: 1. Loose female connector; 2. Threaded connection groove; 3. Loose male connector; 4. Hex nut; 5. External thread; 6. Protective cover; 7. Annular slot; 8. Conical rubber ring; 9. Rubber sealing ring one; 10. Annular groove; 11. Positioning block; 12. Positioning groove; 13. Mounting hole; 14. Fastening bolt; 15. Rubber sealing ring two; 16. Pry hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Refer to the instruction manual appendix Figures 1-5This utility model provides an external threaded slip-on connector, including a slip-on female connector 1. One end of the slip-on female connector 1 is machined with a threaded connecting groove 2. A slip-on sub-connector 3 is threadedly connected inside the threaded connecting groove 2. A hexagonal nut 4 is fixedly fitted on the outer wall of the slip-on sub-connector 3. The outer wall of the slip-on sub-connector 3 is machined with external threads 5. A protective cover 6 is fitted on the outer wall of the hexagonal nut 4. A sealing strip is also provided between the inner wall of the protective cover 6 and the hexagonal nut 4 to further improve the sealing performance between the two. An annular slot 7 is opened at one end of the slip-on female connector 1 near the slip-on sub-connector 3. The end of the protective cover 6 near the annular slot 7 is inserted into the annular slot 7. A conical rubber ring 8 is provided between the outer wall of the protective cover 6 and the inner wall of the annular slot 7. A rubber sealing ring 9 is provided between the slip-on sub-connector 3 and the threaded connecting groove 2.

[0017] like Figure 3 As shown, the slip-on connector 3 has an annular groove 10 at one end near the threaded connection groove 2, and the rubber sealing ring 9 is located inside the annular groove 10. The rubber sealing ring 9 can be fixed in the annular groove 10 by snap-fit ​​or adhesive bonding, with the snap-fit ​​method facilitating subsequent replacement.

[0018] In actual use, by aligning the slip-on connector 3 with the threaded connection groove 2 of the slip-on connector 1 and screwing it in, the rubber sealing ring 9 in the annular groove 10 fits tightly against the inner wall of the threaded connection groove 2, thereby effectively improving the sealing performance between the slip-on connector 3 and the slip-on connector 1. Furthermore, when the slip-on connector 3 is tightened in place, the protective cover 6 is inserted into the annular slot 7, and the conical rubber ring 8 can gradually tighten as the protective cover 6 is inserted, thereby further improving the sealing performance between the slip-on connector 3 and the slip-on connector 1.

[0019] like Figures 1-5 As shown, the protective cover 6 is fixed with a plurality of evenly distributed positioning blocks 11 at the end away from the loose female connector 1. The hexagonal nut 4 has positioning grooves 12 on both sides corresponding to the positioning blocks 11. The positioning blocks 11 are located inside the positioning grooves 12. The outer wall of the protective cover 6 has a plurality of mounting holes 13 arranged in a ring array. Each mounting hole 13 is provided with a fastening bolt 14. The protective cover 6 is detachably installed together with the hexagonal nut 4 by a plurality of fastening bolts 14. Furthermore, a rubber sealing ring 15 is provided between the fastening bolts 14 and the mounting holes 13.

[0020] When the protective cover 6 needs to be disassembled and replaced, the operator first loosens the multiple fastening bolts 14 in sequence, and then removes the protective cover 6 from the hexagonal nut 4. When reinstalling, the operator simply aligns the protective cover 6 with the hexagonal nut 4 and puts it on. The protective cover 6 is restricted by multiple positioning blocks 11, which can effectively maintain stability and also improve the connection between the loose sleeve joint 3 and the loose sleeve female joint 1 to a certain extent.

[0021] like Figure 1 , Figure 2 and Figure 5 As shown, pry holes 16 are also provided at the top and bottom of the front end of the hexagonal nut 4, and both pry holes 16 are located on the outer side of the protective cover 6 along the axis. The design of the pry holes 16 makes it easy for operators to insert a pry bar into the pry holes 16 to rotate the hexagonal nut 4 and the slipknot connector 3, thereby improving the disassembly speed.

[0022] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A threaded slip-on connector, comprising a slip-on female connector (1), one end of which is machined with a threaded connection groove (2), a slip-on sub-connector (3) is threadedly connected inside the threaded connection groove (2), a hexagonal nut (4) is fixedly fitted on the outer wall of the slip-on sub-connector (3), and an external thread (5) is machined on the outer wall of the slip-on sub-connector (3), characterized in that: The outer wall of the hexagonal nut (4) is fitted with a protective cover (6); The slip-on female connector (1) has an annular slot (7) at one end near the slip-on female connector (3). The protective cover (6) is inserted into the annular slot (7) at one end near the annular slot (7). A conical rubber ring (8) is provided between the outer wall of the protective cover (6) and the inner wall of the annular slot (7). A rubber sealing ring (9) is provided between the slip-on female connector (3) and the threaded connection groove (2).

2. The external threaded slip connector according to claim 1, characterized in that: The slip-on connector (3) has an annular groove (10) at one end near the threaded connection groove (2), and the rubber sealing ring (9) is located inside the annular groove (10).

3. The external threaded slip-on joint according to claim 1, characterized in that: The protective cover (6) is fixed with a plurality of evenly distributed positioning blocks (11) at one end away from the loose female connector (1). The hexagonal nut (4) has positioning grooves (12) on both sides corresponding to the positioning blocks (11). The positioning blocks (11) are located inside the positioning grooves (12).

4. The external threaded slip-on joint according to claim 1, characterized in that: The outer wall of the protective cover (6) has multiple mounting holes (13) arranged in a ring array. Each mounting hole (13) is equipped with a fastening bolt (14). The protective cover (6) can be detachably installed together with a hexagonal nut (4) by multiple fastening bolts (14).

5. The external threaded slip-on joint according to claim 4, characterized in that: A rubber sealing ring (15) is provided between the fastening bolt (14) and the mounting hole (13).

6. The external threaded slip-on joint according to claim 1, characterized in that: The hexagonal nut (4) has pry holes (16) at both the top and bottom of its front end, and both pry holes (16) are located on the outer side of the protective cover (6) along the axis.

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