Anti-seepage pipeline joint for PE (Poly Ethylene) pipe

Abstract

The utility model relates to the field of pipeline joints, in particular to a PE pipe anti-seepage pipeline joint which comprises an elbow joint composed of an elbow part and two straight pipe parts, an end sleeve, a joint part, a pressing part, a limiting disc, a threaded sleeve, a connecting frame, a sliding ring and a silicon rubber sleeve. External threads are arranged on the outer wall of the straight pipe part, a threaded sleeve is in threaded connection with the straight pipe part, a sliding ring with the inner diameter equal to the outer diameter of the PE pipe is arranged at the end sleeve, and a silicon rubber sleeve is fixedly connected to the side, facing the end sleeve, of the sliding ring; the slip ring and the silica gel sleeve which can move along the straight pipe part are arranged on an original elbow joint, when the PE pipe is connected with the straight pipe part in an electric hot melting mode, a gap between the PE pipe and the end sleeve is filled and sealed, two-layer sealing is formed in cooperation with a welding connection structure, the anti-seepage effect of the pipeline joint is further enhanced, and the problem that when the existing PE pipe is connected with the joint, the sealing performance is poor is solved. If electric hot melting is not sufficient, gaps are easily formed in the connecting position, and water seepage is caused.

Description

Technical Field

[0001] The utility model relates to the field of pipeline joints, in particular to an anti-seepage pipeline joint for a PE pipe. Background Art

[0002] PE pipe is a commonly used polymer flexible pipe and is used in many fields, including the transportation of water, gas and other media, as a protective pipe for cables, etc. When PE pipes are actually applied and laid out, there are often corner installation designs. At this time, a 90-degree elbow made of the same PE material is needed as a joint between two PE pipes.

[0003] Nowadays, when PE pipes are installed and elbows are used, electric hot-melt connection is generally used. This connection method makes the connection between the PE pipe end and the elbow joint very reliable, and because the pipes are hot-melted together, there are rarely gaps that cause leakage. However, for some PE pipes with thicker walls, the hot-melt speed is slower. Sometimes, due to the unskilled operation of the operator or inaccurate judgment, the pipe is directly installed without being fully heated and melted. There will still be gaps at the connection between the pipe fittings and the joints, affecting their anti-seepage performance.

[0004] Therefore, when conventional elbows are used for electric hot-melt installation of the above-mentioned PE pipes, if the wall thickness of the pipe is large and the electric hot-melt is insufficient, gaps may easily appear at the connection, leading to water seepage. An elbow joint based on electric hot-melt installation can be designed. By tightening the water stop embedded in the PE pipe end and the elbow, the connection gap can be further sealed to reduce the possibility of water seepage. Utility Model Content

[0005] In order to overcome the problem that when the existing PE pipe is connected to the joint, if the electric hot melting is not sufficient, gaps are likely to appear at the connection, causing water seepage.

[0006] The technical scheme of the utility model is: a PE pipe anti-seepage pipeline joint, comprising a bent pipe joint composed of a bent pipe part and two straight pipe parts, an end sleeve, a joint part, a pressing part, a limit plate, a screw sleeve, a connecting frame, a slip ring and a silicone sleeve; the ends of the two straight pipe parts are integrally fixedly connected with an end sleeve of a hollow truncated cone structure, a joint part with an outer diameter the same as the outer diameter of the PE pipe and a pressing part with an inner diameter the same as the outer diameter of the PE pipe are arranged in the end sleeve, an external thread is arranged on the outer wall of the straight pipe part, a limit plate is fixedly connected on one side of the two straight pipe parts close to the bent pipe part, a screw sleeve is threadedly connected on the straight pipe part, a slip ring with an inner diameter equal to the outer diameter of the PE pipe is arranged at the end sleeve, a silicone sleeve is fixedly connected on the side of the slip ring facing the end sleeve, a connecting frame of a U-shaped structure is fixedly connected between the screw sleeve and the slip ring, and the silicone sleeve is adhesively fixed to the outer wall of the PE pipe after electric hot melting.

[0007] Preferably, the screw sleeve is rotated on the straight pipe part and moved from the limit plate to the end sleeve. Under the support of the connecting frame, the slip ring is synchronously moved and away from the end sleeve. At this time, the distance between the end sleeve and the slip ring is greater than the thickness of the machine plate of the electric hot melt machine. The machine plate of the electric hot melt machine is inserted between the end sleeve and the slip ring. The heating head on the machine plate of the electric hot melt machine is inserted into the inner wall of the pressing part. Then, one end of the PE pipe is passed through the slip ring, and the PE pipe is connected to the other heating head on the machine plate of the electric hot melt machine. At the same time, the outer wall of the PE pipe and the inner wall of the pressing part are heated. After heating, the PE pipe is pulled out along the slip ring for a section. Distance, separate from the heating head, then take out the disc of the electric hot melt machine, insert the PE tube into the pressing part until the end of the PE tube rests on the joint, and then rotate the screw sleeve to make the slip ring close to the end sleeve until the silicone sleeve slowly squeezes into the gap between the end sleeve and the outer wall of the PE tube. As the silicone sleeve is squeezed, it gradually deforms and fills the gap until the silicone sleeve rests on the pressing part. As the end of the PE tube and the hot melt part of the pressing part cool down, the end of the PE tube is fixed to the pressing part. At the same time, the silicone sleeve is adhered and fixed to the outer wall of the PE tube, forming two layers of sealing in the end sleeve, further enhancing the anti-seepage effect of the pipe joint.

[0008] Preferably, the end of the PE tube is inserted into the end sleeve and abuts against the joint, the outer wall of the end of the PE tube is tightly attached to the inner wall of the pressing part, the silicone sleeve is embedded in the gap between the end sleeve and the outer wall of the PE tube and the silicone sleeve abuts against the pressing part, the PE tube is inserted into the pressing part until the end of the PE tube abuts against the joint, the outer wall of the end of the PE tube and the inner wall of the pressing part are hot-melt connected and fixed, when the silicone sleeve is not inserted into the end sleeve, it presents a circular ring structure with regular edges, as it is slowly pressed into the gap between the end sleeve and the outer wall of the PE tube, the silicone sleeve is limited by the conical inner wall of the end sleeve, and gradually shrinks and deforms inward, as it is squeezed, the silicone sleeve gradually deforms and fills the gap, until the silicone sleeve abuts against the pressing part, closing the gap between the pressing part and the PE tube, and at the same time, the silicone sleeve is adhered and fixed to the remaining hot-melt portion on the outer wall of the PE tube.

[0009] Preferably, two extension plates are fixedly connected to the edge of the screw sleeve, a rotating shaft is fixedly connected to the extension plate, a locking plate is rotatably connected to the rotating shaft, the locking plate is rotated to the side of the limit disk facing the bent pipe portion, the limit disk is clamped between the screw sleeve and the locking plate, an anti-slip mechanism is arranged between the locking plate and the limit disk, the locking plate rotates to one side of the limit disk with the rotating shaft as the axis, when the locking plate and the limit disk are not separated, the screw sleeve cannot rotate and move on the straight pipe portion, and the silicone sleeve cannot fall out of the gap between the end sleeve and the outer wall of the PE pipe, thereby maintaining the stability of the silicone sleeve.

[0010] Preferably, the anti-slip mechanism is a magnetic ring, a magnetic ring is embedded in the surface of the limit disk, the locking plate is a magnetic metal plate, the locking plate and the magnetic ring are magnetically adsorbed and fixed to the limit disk, after the locking plate is rotated to the side wall of the limit disk, in order to prevent it from accidentally rotating and detaching from the limit disk, the magnetic adsorption and fixing effect of the magnetic ring is used to prevent the locking plate from rotating, thereby enhancing the locking effect.

[0011] Preferably, the anti-slip mechanism is a flange, and the limit plate is provided with 8-12 flanges around itself on one side facing the bent pipe portion. A notch matching the flange is provided on the locking plate, and the locking plate is clamped with the corresponding flange through the notch and fixed on the limit plate. The flange can be made of flexible plastic material. After the locking plate is rotated to the side wall of the limit plate, in order to prevent it from accidentally rotating and disengaging from the limit plate, the flange is squeezed into the notch to form a limit with the locking plate, so that the locking plate cannot rotate, thereby enhancing the locking effect.

[0012] Preferably, the connecting frame is a U-shaped hard plastic rod, and both ends of the connecting frame are fixedly connected to the extension plate and the screw sleeve by connecting heads made of hard plastic material with a thickness of 2 mm. After the silicone sleeve and the remaining hot-melt parts on the outer wall of the PE pipe are adhered and fixed, you can choose to cut the connecting head to separate the connecting frame from the extension plate and the screw sleeve. The exterior of the elbow joint is more regular and smaller, which is convenient for installing and laying pipes. You can also choose not to cut the connecting head, so that the connecting frame always forms a pulling structure between the extension plate and the screw sleeve, which better retains the silicone sleeve.

[0013] Beneficial effects of the utility model:

[0014] 1. A slip ring and a silicone sleeve that can move along the straight pipe part are set on the original elbow joint. When the PE pipe and the straight pipe part are connected by electric hot melting, the gap between the PE pipe and the end sleeve is filled and sealed, and a two-layer seal is formed with the fusion connection structure to further enhance the anti-seepage effect of the pipe joint;

[0015] 2. Through the setting of the anti-drop mechanism, the position of the slip ring can be fixed during use to prevent the silicone sleeve from falling out of the gap between the PE tube and the end sleeve, ensuring long-term sealing;

[0016] 3. After the silicone sleeve is bonded to the outer wall of the PE pipe, the connecting head can be cut off to remove the connecting frame, thereby reducing the overall structure of the elbow joint and avoiding the connection frame from hindering the installation of the pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The first three-dimensional structure schematic diagram of the overall assembly of the PE pipe anti-seepage pipe joint of the utility model is shown;

[0018] Figure 2 The second stereoscopic structure schematic diagram of the overall assembly of the PE pipe anti-seepage pipe joint of the utility model is shown;

[0019] Figure 3 Shown is a three-dimensional structure schematic diagram of a PE pipe anti-seepage pipe joint elbow joint of the utility model;

[0020] Figure 4 The three-dimensional structure diagram of the electric hot melting state of the PE pipe anti-seepage pipe joint of the utility model is shown;

[0021] Figure 5 The diagram shows the cross-sectional structure of the PE pipe anti-seepage pipe joint of the utility model;

[0022] Figure 6 The utility model shows the anti-drop mechanism of the PE pipe anti-seepage pipe joint. Figure 1 The enlarged schematic diagram at A in the middle;

[0023] Figure 7 The utility model shows the anti-drop mechanism of the PE pipe anti-seepage pipe joint. Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 8 What is shown is a three-dimensional structural schematic diagram of the PE pipe anti-seepage pipe joint connecting frame of the utility model.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. bent pipe portion; 2. straight pipe portion; 3. end sleeve; 4. joint portion; 5. pressing portion; 6. limit plate; 7. screw sleeve; 8. connecting frame; 9. slip ring; 10. silicone sleeve; 11. locking plate; 12. magnetic ring; 13. flange; 14. connector; 15. extension plate; 16. rotating shaft. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-Figure 8The utility model provides a PE pipe anti-seepage pipe joint, including a bend pipe joint composed of a bend pipe part 1 and two straight pipe parts 2, an end sleeve 3, a joint part 4, a pressing part 5, a limit plate 6, a screw sleeve 7, a connecting frame 8, a slip ring 9 and a silicone sleeve 10; the ends of the two straight pipe parts 2 are integrally fixedly connected with the end sleeves 3 of a hollow truncated cone structure, the end sleeves 3 are provided with a joint part 4 with the same outer diameter as the outer diameter of the PE pipe, and a pressing part 5 with the same inner diameter as the outer diameter of the PE pipe, the outer wall of the straight pipe part 2 is provided with an external thread, and the two straight pipe parts 2 are close to the bend pipe part. One side of the straight pipe 1 is fixedly connected with a limit plate 6, a screw sleeve 7 is threadedly connected to the straight pipe 2, a slip ring 9 with an inner diameter equal to the outer diameter of the PE pipe is arranged at the end sleeve 3, a silicone sleeve 10 is fixedly connected to the side of the slip ring 9 facing the end sleeve 3, a U-shaped connecting frame 8 is fixedly connected between the screw sleeve 7 and the slip ring 9, and the silicone sleeve 10 is adhered and fixed to the outer wall of the PE pipe after electric hot melting, the screw sleeve 7 is rotated on the straight pipe 2, and moved from the limit plate 6 to the end sleeve 3. Under the support of the connecting frame 8, the slip ring 9 moves synchronously and away from the end sleeve 3. At this time, the end sleeve 3 and the slip ring The spacing between the two ends of the hot melt machine is greater than the thickness of the hot melt machine disc. The hot melt machine disc is inserted between the end sleeve 3 and the slip ring 9. The heating head on the hot melt machine disc is inserted into the inner wall of the pressing part 5. Then, one end of the PE tube is passed through the slip ring 9. The PE tube is docked to the other heating head on the hot melt machine disc. At the same time, the outer wall of the PE tube and the inner wall of the pressing part 5 are heated. After heating, the PE tube is pulled away from the slip ring 9 for a distance and separated from the heating head. Then, the hot melt machine disc is taken out and the PE tube is inserted into the pressing part 5. , until the end of the PE pipe abuts against the joint 4, then rotate the screw sleeve 7 to make the slip ring 9 close to the end sleeve 3, until the silicone sleeve 10 slowly squeezes into the gap between the end sleeve 3 and the outer wall of the PE pipe. As the silicone sleeve 10 is squeezed, it gradually deforms and fills the gap until the silicone sleeve 10 abuts against the pressing part 5. As the hot melt at the end of the PE pipe and the pressing part 5 cools, the end of the PE pipe is fixed to the pressing part 5. At the same time, the silicone sleeve 10 is adhered and fixed to the outer wall of the PE pipe, forming a two-layer seal in the end sleeve 3, further enhancing the anti-seepage effect of the pipeline joint.

[0028] See also Figure 1-Figure 5 , Figure 8The end of the PE tube is inserted into the end sleeve 3 and abuts against the joint 4, the outer wall of the end of the PE tube is tightly attached to the inner wall of the pressing part 5, the silicone sleeve 10 is embedded in the gap between the end sleeve 3 and the outer wall of the PE tube and the silicone sleeve 10 abuts against the pressing part 5, and the PE tube is inserted into the pressing part 5 until the end of the PE tube abuts against the joint 4. The outer wall of the end of the PE tube and the inner wall of the pressing part 5 are hot-melt connected and fixed. When the silicone sleeve 10 is not inserted into the end sleeve 3, it presents a circular ring structure with regular edges. As it is slowly pressed into the gap between the end sleeve 3 and the outer wall of the PE tube, the silicone sleeve 10 is limited by the conical inner wall of the end sleeve 3 and gradually shrinks and deforms inward. As the silicone sleeve 10 is squeezed, it gradually deforms and fills the gap until the silicone sleeve 10 abuts against the pressing part 5, the gap between the pressing part 5 and the PE tube is closed, and at the same time, the silicone sleeve 10 is adhered and fixed to the remaining hot-melt portion on the outer wall of the PE tube. The connecting frame 8 is a U-shaped hard plastic rod, and the two ends of the connecting frame 8 are respectively fixedly connected to the extension plate 15 and the screw sleeve 7 through a connecting head 14 of a hard plastic material with a thickness of 2 mm. After the silicone sleeve 10 is adhered and fixed to the remaining hot-melt portion on the outer wall of the PE tube, the connecting head 14 can be cut off to separate the connecting frame 8 from the extension plate 15 and the screw sleeve 7. The outer part of the elbow joint is more regular and the volume is smaller, which is convenient for installing and laying pipe fittings. You can also choose not to cut off the connecting head 14, so that the connecting frame 8 always forms a tie structure between the extension plate 15 and the screw sleeve 7, which has a better retention effect on the silicone sleeve 10.

[0029] See also Figure 1-Figure 4 , Figure 6-Figure 7 Two extension plates 15 are fixedly connected to the edge of the screw sleeve 7, and a rotating shaft 16 is fixedly connected to the extension plate 15. A locking piece 11 is rotatably connected to the rotating shaft 16. The locking piece 11 rotates to the side of the limit plate 6 facing the curved pipe portion 1, and the limit plate 6 is clamped between the screw sleeve 7 and the locking piece 11. An anti-slip mechanism is arranged between the locking piece 11 and the limit plate 6. The locking piece 11 rotates to one side of the limit plate 6 with the rotating shaft 16 as the axis. When the locking piece 11 and the limit plate 6 are not separated, the screw sleeve 7 cannot rotate and move on the straight pipe portion 2, and the silicone sleeve 10 cannot fall out of the gap between the end sleeve 3 and the outer wall of the PE pipe, thereby maintaining the stability of the silicone sleeve 10.

[0030] Example 1: Please refer to Figure 1 , Figure 3-Figure 6 In this embodiment, the anti-slip mechanism is a magnetic ring 12, and a magnetic ring 12 is embedded and installed on the surface of the limit plate 6. The locking piece 11 is a magnetic metal sheet. The locking piece 11 and the magnetic ring 12 are magnetically adsorbed and fixed on the limit plate 6. After the locking piece 11 is rotated to the side wall of the limit plate 6, in order to prevent it from accidentally rotating and separating from the limit plate 6, the magnetic adsorption and fixing effect of the magnetic ring 12 is used to prevent the locking piece 11 from rotating, thereby enhancing the locking effect.

[0031] Example 2: Please refer to Figure 2 , Figure 5 , Figure 7 In this embodiment, the anti-slip mechanism is a flange 13. The limiting disk 6 is provided with 8-12 flanges 13 around itself on one side facing the curved pipe portion 1. The locking piece 11 is provided with a notch adapted to the flange 13. The locking piece 11 is clamped with the corresponding flange 13 through the notch and fixed on the limiting disk 6. The flange 13 can be made of a flexible plastic material. After the locking piece 11 is rotated to the side wall of the limiting disk 6, in order to prevent it from accidentally rotating and separating from the limiting disk 6, the flange 13 is squeezed into the notch to form a limit with the locking piece 11, so that the locking piece 11 cannot rotate, thereby enhancing the locking effect.

[0032] Through the above steps, a slip ring 9 and a silicone sleeve 10 that can move along the straight pipe part 2 are arranged on the original elbow joint. When the PE pipe is connected to the straight pipe part 2 by electric hot-melt, the gap between the PE pipe and the end sleeve 3 is filled and sealed, and a two-layer seal is formed in conjunction with the fusion connection structure, thereby further enhancing the anti-seepage effect of the pipeline joint, so as to solve the problem that when the existing PE pipe is connected to the joint, if the electric hot-melt is not sufficient, a gap is likely to appear at the connection, resulting in water seepage.

Claims

1. A PE pipe anti-seepage pipe joint, comprising a bent pipe joint consisting of a bent pipe portion (1) and two straight pipe portions (2); characterized in that: The invention also comprises an end sleeve (3), a joint portion (4), a pressing portion (5), a limit plate (6), a screw sleeve (7), a connecting frame (8), a slip ring (9) and a silicone sleeve (10); the ends of the two straight pipe portions (2) are integrally fixedly connected with an end sleeve (3) of a hollow truncated cone structure; a joint portion (4) having an outer diameter the same as the outer diameter of the PE pipe and a pressing portion (5) having an inner diameter the same as the outer diameter of the PE pipe are arranged inside the end sleeve (3); an outer wall of the straight pipe portion (2) is provided with an external thread; and the two straight pipe portions (2) are provided with a screw sleeve (7), a screw sleeve (7), a connecting frame (8), a slip ring (9) and a silicone sleeve (10); A limit plate (6) is fixedly connected to one side of the straight pipe portion (2) close to the curved pipe portion (1), a threaded sleeve (7) is threadedly connected to the straight pipe portion (2), a slip ring (9) having an inner diameter equal to the outer diameter of the PE pipe is arranged at the end sleeve (3), a silicone sleeve (10) is fixedly connected to the side of the slip ring (9) facing the end sleeve (3), a U-shaped connecting frame (8) is fixedly connected between the threaded sleeve (7) and the slip ring (9), and the silicone sleeve (10) is adhesively fixed to the outer wall of the PE pipe after the electric heat melting.

2. The PE pipe anti-seepage pipe joint according to claim 1, characterized in that: The end of the PE pipe is inserted into the end sleeve (3) and abuts against the joint portion (4), the outer wall of the PE pipe end is tightly attached to the inner wall of the pressing portion (5), the silicone sleeve (10) is embedded in the gap between the end sleeve (3) and the outer wall of the PE pipe, and the silicone sleeve (10) abuts against the pressing portion (5).

3. The PE pipe anti-seepage pipe joint according to claim 1, characterized in that: Two extension plates (15) are fixedly connected to the edge of the screw sleeve (7), a rotating shaft (16) is fixedly connected to the extension plate (15), a locking plate (11) is rotatably connected to the rotating shaft (16), the locking plate (11) is rotated to the side of the limit plate (6) facing the curved pipe portion (1), the limit plate (6) is clamped between the screw sleeve (7) and the locking plate (11), and an anti-slip mechanism is provided between the locking plate (11) and the limit plate (6).

4. The PE pipe anti-seepage pipe joint according to claim 3, characterized in that: The anti-drop mechanism is a magnetic attraction ring (12), the surface of the limit plate (6) is embedded with the magnetic attraction ring (12), the locking plate (11) is a magnetic metal sheet, and the locking plate (11) and the magnetic attraction ring (12) are magnetically attracted and fixed on the limit plate (6).

5. The PE pipe anti-seepage pipe joint according to claim 3, characterized in that: The anti-slip mechanism is a flange (13). The limiting plate (6) is provided with 8 to 12 flanges (13) around one side of the limiting plate (6) facing the curved pipe portion (1). A notch matching the flange (13) is provided on the locking plate (11). The locking plate (11) is clamped with the corresponding flange (13) through the notch and fixed on the limiting plate (6).

6. The PE pipe anti-seepage pipe joint according to claim 3, characterized in that: The connecting frame (8) is a U-shaped hard plastic rod, and the two ends of the connecting frame (8) are fixedly connected to the extension plate (15) and the screw sleeve (7) through a connecting head (14) made of hard plastic material with a thickness of 2 mm.

Images