Stainless steel water pipe easy to expand

Abstract

The utility model relates to the technical field of stainless steel water pipes, and discloses an easy-to-expand stainless steel water pipe which comprises a first water pipe and a second water pipe, connecting flanges are welded to the two ends of the first water pipe and the two ends of the second water pipe, through grooves are formed in the surfaces of the connecting flanges, and clamping grooves are formed in the connecting flanges. The L-shaped curved blocks on the connecting ring are aligned with the through grooves of the connecting flanges on the first water pipe and the second water pipe respectively, then the first water pipe and the second water pipe are pushed to enable the L-shaped curved blocks to stretch into the through grooves, the connecting ring is rotated to enable the L-shaped curved blocks on the connecting ring to stretch into the clamping grooves, locking of the two connecting flanges can be achieved, and even if connecting bolts are loosened, the connecting bolts can be locked. Locking can be guaranteed all the time as long as the connecting bolts are not separated from the mounting holes, then it is guaranteed that leakage cannot occur, the second sealing ring is arranged to be used for improving the sealing performance of the joint of the first water pipe and the second water pipe, and water is prevented from entering a gap between the connecting ring and the connecting flange.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel water pipe technology, specifically to a stainless steel water pipe that is easy to expand. Background Technology

[0002] Stainless steel water pipes are the best material for direct drinking water transportation due to their low leakage rate, which conserves precious water resources. They are suitable for home renovations, construction projects, commercial facilities, industrial applications, and public utilities. Stainless steel water pipe systems often need to adapt to various layouts and changing requirements, facilitating adjustments and connections. When the distance between stainless steel water pipes is long, external water pipes are required. However, current stainless steel water pipe connections involve butt-jointing two pipes and then connecting them using welding, flanges, or press-fit / ring-fit methods. Welding requires skilled workers, and welding errors can easily lead to leaks. Flanges are prone to loose bolts at the connection point, causing leaks. Common press-fit / ring-fit joints are prone to problems such as insufficient insertion depth or damaged sealing rings, requiring removal and reconnection. Utility Model Content

[0003] The purpose of this invention is to provide an easily expandable stainless steel water pipe to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an easily expandable stainless steel water pipe, comprising a water pipe one and a water pipe two, both ends of which are welded with connecting flanges. A through groove is formed on the surface of the connecting flange, and a retaining groove is formed inside the connecting flange. The through groove and the retaining groove are connected, and the size of the through groove is larger than the size of the retaining groove. A connecting ring is provided at the connection point of the water pipe one and the water pipe two. L-shaped curved blocks are fixedly installed on both sides of the connecting ring. The side of the L-shaped curved block away from the connecting ring extends from the through groove and then is engaged in the retaining groove. Mounting holes are formed on both the connecting flange and the connecting ring. After the L-shaped curved block is engaged in the retaining groove, the mounting holes on the connecting flange and the connecting ring are aligned. The connecting flange at the connection point of the water pipe one and the water pipe two is fixedly connected by connecting bolts matching the mounting holes. A sealing ring two is fixedly installed inside the connecting ring, and the ends of the water pipe one and the water pipe two rest on the sealing ring two.

[0005] Furthermore, the length of the side of the L-shaped block away from the connecting ring is less than the length of the slot, and the end face of the side of the L-shaped block that is inserted into the slot is an inclined surface.

[0006] Furthermore, grooves are provided on the surface of the connecting flange and the left and right sides of the connecting ring, and a sealing ring is engaged in the groove. The sealing ring is simultaneously engaged in the grooves of the connecting ring and the connecting flange.

[0007] Furthermore, the edges of the groove are chamfered, and the groove is closer to water pipe one and water pipe two relative to the mounting holes.

[0008] Furthermore, the diameter of the connecting ring is larger than the diameter of the connecting flange, a rotating ring is fixedly installed on the outer wall of the connecting ring, the outer wall of the rotating ring is provided with anti-slip protrusions, and the rotating ring is a dodecagon.

[0009] Furthermore, the outer wall of the connecting flange is provided with an integrally formed extension tube, which is sleeved on water pipe one and water pipe two.

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

[0011] 1. During connection, simply align the L-shaped blocks on the connecting ring with the through grooves of the connecting flanges on water pipe one and water pipe two, respectively. Then push water pipe one and water pipe two so that the L-shaped blocks extend into the through grooves. Rotate the connecting ring so that the L-shaped blocks on the connecting ring extend into the slots. This will lock the two connecting flanges. Even if the connecting bolts become loose, as long as the connecting bolts do not come out of the mounting holes, the locking will be maintained, thus ensuring that there will be no leakage. A second sealing ring is provided to increase the sealing at the junction of water pipe one and water pipe two, preventing water from entering the gap between the connecting ring and the connecting flange.

[0012] 2. Grooves are provided on the surface of the connecting flange and the left and right sides of the connecting ring. A sealing ring 1 is inserted into the groove. The sealing ring 1 is inserted into the groove of the connecting ring and the connecting flange. The sealing ring 1 further increases the sealing performance at the connection between the connecting ring and the connecting flange. Even if water breaks through the seal of the sealing ring 2 and enters the gap between the connecting ring and the connecting flange, it can be intercepted when it flows to the sealing ring. Attached Figure Description

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

[0014] Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0015] Figure 3 This is a structural schematic diagram of the exploded view of the connecting flange and connecting ring of this utility model;

[0016] Figure 4 This is a structural schematic diagram of a sectional view of the connecting flange of this utility model;

[0017] Figure 5 This is a schematic diagram of the connecting ring of this utility model.

[0018] In the diagram: 1. Water pipe one; 2. Water pipe two; 3. Connecting flange; 301. Extension pipe body; 4. Connecting ring; 5. Through groove; 6. Slot; 7. L-shaped curved block; 8. Groove; 9. Sealing ring one; 10. Mounting hole; 11. Connecting bolt; 12. Rotating ring; 13. Sealing ring two. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: an easily expandable stainless steel water pipe, including a water pipe 1 and a water pipe 2. Both ends of the water pipe 1 and the water pipe 2 are welded with connecting flanges 3. A through groove 5 is formed on the surface of the connecting flange 3, and a retaining groove 6 is formed inside the connecting flange 3. The through groove 5 and the retaining groove 6 are connected, and the size of the through groove 5 is larger than the size of the retaining groove 6. A connecting ring 4 is provided at the connection point of the water pipe 1 and the water pipe 2. L-shaped curved blocks 7 are fixedly installed on both sides of the connecting ring 4. The connecting ring 4 extends from the side of the through groove 5 and then snaps into the slot 6. Both the connecting flange 3 and the connecting ring 4 have mounting holes 10. After the L-shaped curved block 7 is snapped into the slot 6, the mounting holes 10 on the connecting flange 3 and the connecting ring 4 are aligned. The connecting flange 3 at the connection of water pipe 1 and water pipe 2 is fixedly connected by connecting bolts 11 that match the mounting holes 10. A sealing ring 2 13 is fixedly installed inside the connecting ring 4. The ends of water pipe 1 and water pipe 2 rest on the sealing ring 2 13. The connecting flanges 3 on water pipe 1 and water pipe 2 are directly fixed using connecting bolts 11. A locking connecting ring 4 is installed between the connecting flanges 3 on water pipe 1 and water pipe 2 to effectively prevent gaps from appearing between the connecting flanges 3 on water pipe 1 and water pipe 2 due to loose connecting bolts 11, thus avoiding water leakage. During connection, simply align the L-shaped curved blocks 7 on the connecting ring 4 with the through grooves 5 on the connecting flanges 3 on water pipe 1 and water pipe 2, and then push water pipe 1... Water pipe 2 allows the L-shaped curved block 7 to extend into the through groove 5. Rotating the connecting ring 4 allows the L-shaped curved block 7 on the connecting ring 4 to extend into the slot 6, thereby locking the two connecting flanges 3. Even if the connecting bolt 11 becomes loose, as long as the connecting bolt 11 does not come out of the mounting hole 10, it can always be locked, thus ensuring that there will be no leakage problem. The sealing ring 2 13 is set to increase the sealing at the junction of water pipe 1 and water pipe 2 2, and prevent water from entering the gap between the connecting ring 4 and the connecting flange 3.

[0021] The length of the side of the L-shaped block 7 away from the connecting ring 4 is less than the length of the slot 6. The end face of the side of the L-shaped block 7 that is inserted into the slot 6 is a bevel. The bevel setting makes the smaller end of the L-shaped block 7 extend into the slot 6 first, which can guide and avoid the problem of the L-shaped block 7 getting stuck.

[0022] Grooves 8 are provided on the surface of the connecting flange 3 and the left and right sides of the connecting ring 4. A sealing ring 9 is inserted into the groove 8. The sealing ring 9 is inserted into the groove 8 of the connecting ring 4 and the connecting flange 3. The sealing ring 9 further increases the sealing performance at the connection between the connecting ring 4 and the connecting flange 3. Even if water breaks through the seal of the sealing ring 13 and enters the gap between the connecting ring 4 and the connecting flange 3, it can be intercepted when it flows to the sealing ring 9.

[0023] The edge of the groove 8 is chamfered, which makes the opening of the groove 8 larger than the inside of the groove 8, providing deformation space when the sealing ring 9 is squeezed and deformed. The groove 8 is closer to the water pipe 1 and water pipe 2 than the mounting hole 10, ensuring that the water that breaks through the sealing ring 2 13 is first intercepted by the sealing ring 9.

[0024] The diameter of the connecting ring 4 is larger than the diameter of the connecting flange 3. A rotating ring 12 is fixedly installed on the outer wall of the connecting ring 4. The outer wall of the rotating ring 12 is provided with anti-slip protrusions. The rotating ring 12 is a dodecahedron. Because the diameter of the connecting ring 4 is larger than the diameter of the connecting flange 3, the inner wall of the rotating ring 12 will not contact the outer wall of the connecting flange 3. The rotating ring 12 makes it easier and more convenient to rotate the connecting ring 4. And because the rotating ring 12 is a dodecahedron, a wrench can also be used to rotate the rotating ring 12.

[0025] The outer wall of the connecting flange 3 is provided with an integrally formed extension tube 301. The extension tube 301 is sleeved on water pipe 1 and water pipe 2. The extension tube 301 is used to guide and position the connecting flange 3 when it is welded to water pipe 1 and water pipe 2. It can also increase the stress-bearing parts of the connecting flange 3 and water pipe 1 and water pipe 2, so that the force transmitted from the connecting flange 3 to water pipe 1 and water pipe 2 will be dispersed.

[0026] Working principle: During production, welding equipment is used to weld the connecting flange 3 to the left and right ends of water pipe 1 and water pipe 2. During welding, the connecting flange 3 is positioned to ensure that the two connecting flanges 3 on the same water pipe are symmetrically set. When expanding, simply take out water pipe 1 and water pipe 2, insert the sealing ring 9 into the groove 8, rotate water pipe 1 and water pipe 2 so that the L-shaped curved blocks 7 on the left and right sides of the connecting ring 4 are aligned with the through grooves 5 on the two connecting flanges 3 respectively. Move water pipe 1 and water pipe 2 so that the L-shaped curved blocks 7 extend into the through grooves 5. Rotate the rotating ring 12 to drive the connecting ring 4 to rotate. The rotation of the connecting ring 4 drives the L-shaped curved blocks 7 to rotate, so that the L-shaped curved blocks 7 extend into the slot 6. During the rotation, observe the position of the mounting hole 10. After the mounting hole 10 on the connecting ring 4 is aligned with the mounting hole 10 on the connecting flange 3, insert the connecting bolt 11 and tighten the nut to complete the fixation.

[0027] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A stainless steel water pipe easy to expand, comprising a water pipe one (1), a water pipe two (2), characterized in that: The both ends of the water pipe one (1) and the water pipe two (2) are welded with the connecting flange (3), the surface of the connecting flange (3) is provided with the through groove (5), the inside of the connecting flange (3) is provided with the clamping groove (6), the through groove (5) and the clamping groove (6) are communicated, the size of the through groove (5) is greater than the size of the clamping groove (6), the connecting ring (4) is arranged at the connecting position of the water pipe one (1) and the water pipe two (2), the both sides of the connecting ring (4) are fixedly installed with the L-shaped curved block (7), the side of the L-shaped curved block (7) away from the connecting ring (4) extends into the through groove (5) and then is clamped into the clamping groove (6), the mounting hole (10) is arranged on the connecting flange (3) and the connecting ring (4), and after the L-shaped curved block (7) is clamped into the clamping groove (6), the mounting holes (10) on the connecting flange (3) and the connecting ring (4) are aligned, the connecting flange (3) at the connecting position of the water pipe one (1) and the water pipe two (2) is fixedly connected through the connecting bolt (11) matched with the mounting hole (10), the inside of the connecting ring (4) is fixedly installed with the sealing ring two (13), and the end of the water pipe one (1) and the water pipe two (2) is supported on the sealing ring two (13).

2. The easily expandable stainless steel water pipe according to claim 1, characterized in that: The length of the side of the L-shaped curved block (7) away from the connecting ring (4) is less than the length of the clamping groove (6), and the end face of the side of the L-shaped curved block (7) clamped into the clamping groove (6) is an inclined surface.

3. The easily expandable stainless steel water pipe according to claim 1, wherein: The surface of the connecting flange (3) and the left and right surfaces of the connecting ring (4) are provided with the recess (8), the sealing ring one (9) is clamped in the recess (8), and the sealing ring one (9) is clamped into the recess (8) of the connecting ring (4) and the connecting flange (3) at the same time.

4. The easily expandable stainless steel water pipe according to claim 3, characterized in that: The edge of the recess (8) is chamfered, and the recess (8) is closer to the water pipe one (1) and the water pipe two (2) relative to the mounting hole (10).

5. The easily expandable stainless steel water pipe according to claim 1, wherein: The diameter of the connecting ring (4) is greater than the diameter of the connecting flange (3), the outer wall of the connecting ring (4) is fixedly installed with the rotating ring (12), the outer wall of the rotating ring (12) is provided with the anti-skid convex, and the rotating ring (12) is a dodecahedron.

6. The easily expandable stainless steel water pipe according to claim 1, wherein: The outer wall of the connecting flange (3) is provided with the integrally-formed extension pipe body (301), and the extension pipe body (301) is sleeved on the water pipe one (1) and the water pipe two (2).

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