Novel non-metal expansion joint with high sealing performance

Abstract

The utility model discloses a novel non-metallic expansion joint with high sealing performance, which relates to the technical field of expansion joints and comprises a sealing pipe and a plurality of expansion grooves, the expansion grooves are equidistantly distributed on the outer side surface of the sealing pipe, a socketed pipe is mounted on the surface of one side of the sealing pipe, and the socketed pipe is connected with the sealing pipe. A threaded groove is formed in the inner wall of the socketed pipe, sealing rubber is installed on the inner wall of the socketed pipe, and a fixing hole is formed in the surface of one side of the socketed pipe. The sealing rubber is mounted on the inner wall of the socketed pipe, so that the sealing rubber is in contact with a pipeline due to extrusion, the sealing effect is further improved, and the defect that only one sealing ring is arranged between the expansion joint and the pipeline for sealing in the prior art is overcome; the problem that the sealing effect is reduced due to the fact that gaps are possibly formed in the connecting position of the expansion joint due to shaking in the long-term use of the expansion joint is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a novel high-seal non-metal expansion joint. Background Art

[0002] An expansion joint is a compensating device used in a pipeline system to absorb the stress caused by thermal expansion and contraction, vibration and displacement of the pipeline under temperature changes, vibration or installation errors, thereby protecting the safe operation of the pipeline system. Expansion joints are usually made of materials such as metal bellows, hoses or rubber joints. They have good elasticity and flexibility, can effectively bear the deformation and stress of the pipeline system, reduce the impact on the pipeline itself and the connectors, and extend the service life of the pipeline system.

[0003] When installing the expansion joint, both ends of the expansion joint need to be connected to the pipeline. When the pipeline shakes, the corrugated grooves on its outer surface can reduce the shaking between the expansion joint itself and the connecting piece. However, when the expansion joint of the prior art is installed and connected to the pipeline, there is only one layer of seal at the connection. As a result, if the pipeline shakes frequently during daily use, the gap at the connection between the expansion joint and the pipeline may gradually become larger, thereby affecting the sealing performance between the expansion joint and the pipeline. Utility Model Content

[0004] The utility model provides a novel highly sealable non-metallic expansion joint, which has the advantage of good sealing effect, so as to solve the problem that when the expansion joint in the prior art is installed and connected with the pipeline, its connection has only one layer of sealing, which leads to that if the pipeline shakes frequently in daily use, the connection gap between the expansion joint and the pipeline may gradually become larger, thereby affecting the sealing performance between the expansion joint and the pipeline.

[0005] In order to achieve the purpose of good sealing effect, the utility model provides the following technical solutions: a new type of highly sealed non-metallic expansion joint, including a sealing tube and an expansion groove, wherein the expansion grooves are a plurality of equally spaced expansion grooves distributed on the outer surface of the sealing tube, a sleeve tube is installed on one side surface of the sealing tube, a threaded groove is provided on the inner wall of the sleeve tube, a sealing rubber is installed on the inner wall of the sleeve tube, a fixing hole is provided on one side surface of the sleeve tube, a fixing component is installed on the inner wall of the sleeve tube, and a sealing component is installed on the inner wall of the sleeve tube.

[0006] As a preferred technical solution of the utility model, there are two sleeve tubes, which are distributed at one end and the other end of the sealing tube. Ten fixing holes are distributed on one side surface of each sealing tube. Sealing rubber is distributed correspondingly on the inner wall of each sealing tube. A threaded groove is opened on the inner wall of each sealing tube. The sealing tube and the expansion groove are both made of plastic.

[0007] As a preferred technical solution of the utility model, the fixing assembly includes a bolt, a limiting nut is installed on the outer surface of the bolt, a return spring is installed on one side surface of the limiting nut, a fixing nut is installed on the outer surface of the bolt, and the bolt is installed on the inner wall of the fixing hole.

[0008] As a preferred technical solution of the utility model, there are four bolts, and the four bolts are equidistantly distributed in a circular array on the inner wall of the fixing hole. The outer surface of the bolt is movably inserted into the inner wall of the fixing hole. Two limiting nuts are distributed on the outer surface of each bolt, and two fixing nuts are distributed on the outer surface of each bolt. Two return springs are sleeved on the outer surface of each bolt, and one end of the return spring is in movably contact with one side surface of the limiting nut, and the other end of the return spring is in movably contact with one side surface of the sleeve.

[0009] As a preferred technical solution of the utility model, the sealing assembly includes a sealing ring, a sealing thread is provided on the outer surface of the sealing ring, an airtight gasket is installed on one side surface of the sealing ring, a plug-in plate is installed on one side surface of the sealing ring, a plug-in groove is provided on one side surface of the sealing ring, and the sealing ring is installed on the inner wall of the sleeve.

[0010] As a preferred technical solution of the utility model, there are two sealing rings, and the outer surfaces of the two sealing rings are provided with sealing threads, the sealing threads are movably and rotatably connected to the inner wall of the thread groove, and an airtight gasket is installed on one side surface of each sealing ring.

[0011] As a preferred technical solution of the utility model, a plug-in plate is installed on one side surface of each sealing ring, a plug-in groove is opened and closed on one side surface of each sealing ring, and the plug-in plate is movably plugged with the inner wall of the plug-in groove.

[0012] Compared with the prior art, the utility model provides a new type of high-sealing non-metallic expansion joint, which has the following beneficial effects:

[0013] The new type of highly sealed non-metallic expansion joint has a smaller gap between the pipeline and the airtight pad when the pipeline is squeezed, thereby improving the sealing performance between the pipeline and the expansion joint, and the inner wall of the sleeve is installed with sealing rubber. At this time, the sealing rubber will contact with the pipeline due to squeezing, thereby further improving the sealing effect, thereby compensating for the problem that there is only one sealing ring between the expansion joint and the pipeline in the prior art to seal them, resulting in gaps in the connection of the expansion joint due to shaking during long-term use, thereby resulting in a decrease in the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the sealing tube structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the utility model from another angle;

[0018] Figure 5 This is a schematic diagram of the sealing component structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the fixing component of the utility model.

[0020] In the figure: 1. Sealing tube; 2. Expansion groove; 3. Socket tube; 4. Threaded groove; 5. Sealing rubber; 6. Fixing hole; 7. Bolt; 8. Limiting nut; 9. Reset spring; 10. Fixing nut; 11. Sealing ring; 12. Sealing thread; 13. Airtight gasket; 14. Plug-in plate; 15. Plug-in groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1 , Figure 2 , Figure 6 The utility model discloses a novel high-sealing non-metallic expansion joint, comprising a sealing tube 1 and an expansion groove 2. The expansion grooves 2 are a plurality of equidistantly distributed on the outer surface of the sealing tube 1. A sleeve tube 3 is installed on one side surface of the sealing tube 1. A threaded groove 4 is provided on the inner wall of the sleeve tube 3. A sealing rubber 5 is installed on the inner wall of the sleeve tube 3. A fixing hole 6 is provided on one side surface of the sleeve tube 3. A fixing component is installed on the inner wall of the sleeve tube 3. A sealing component is installed on the inner wall of the sleeve tube 3.

[0024] There are two sleeve tubes 3, which are distributed at one end and the other end of the sealing tube 1. Ten fixing holes 6 are distributed on one side surface of each sealing tube 1. A sealing rubber 5 is distributed correspondingly on the inner wall of each sealing tube 1. A threaded groove 4 is opened on the inner wall of each sealing tube 1. The sealing tube 1 and the expansion groove 2 are both made of plastic.

[0025] The fixing assembly includes a bolt 7, a limiting nut 8 is installed on the outer surface of the bolt 7, a return spring 9 is installed on one side surface of the limiting nut 8, a fixing nut 10 is installed on the outer surface of the bolt 7, and the bolt 7 is installed on the inner wall of the fixing hole 6.

[0026] There are four bolts 7, which are equidistantly distributed in a circular array on the inner wall of the fixing hole 6. The outer surface of the bolt 7 is movably connected to the inner wall of the fixing hole 6. Two limiting nuts 8 are distributed on the outer surface of each bolt 7, and two fixing nuts 10 are distributed on the outer surface of each bolt 7. Two return springs 9 are sleeved on the outer surface of each bolt 7, and one end of the return spring 9 is in movably contact with one side surface of the limiting nut 8, and the other end of the return spring 9 is in movably contact with one side surface of the sleeve tube 3.

[0027] The sealing tube 1 and the expansion groove 2 will make corresponding adjustments according to the amplitude of the shaking. When the pipeline shakes, the change in spacing will squeeze the return spring 9 sleeved on the outer surface of the bolt 7. At this time, the squeezed return spring 9 will reset when the squeezing force generated by the shaking disappears. The return spring 9 squeezes the sleeve tube 3, thereby assisting the pipeline and the expansion joint to return to the initial alignment state.

[0028] Embodiment 2

[0029] Based on the above embodiment 1, please refer to FIG. Figure 3 , Figure 4 , Figure 5 The sealing assembly includes a sealing ring 11, a sealing thread 12 is provided on the outer surface of the sealing ring 11, an airtight gasket 13 is installed on one side surface of the sealing ring 11, a plug-in board 14 is installed on one side surface of the sealing ring 11, a plug-in groove 15 is provided on one side surface of the sealing ring 11, and the sealing ring 11 is installed on the inner wall of the sleeve 3.

[0030] There are two sealing rings 11 , and sealing threads 12 are provided on the outer surfaces of the two sealing rings 11 . The sealing threads 12 are movably and rotatably connected to the inner wall of the thread groove 4 . An airtight pad 13 is installed on one side surface of each sealing ring 11 .

[0031] A plug-in plate 14 is installed on one side surface of each sealing ring 11 . A plug-in slot 15 is opened and closed on one side surface of each sealing ring 11 . The plug-in plate 14 is movably plugged into the inner wall of the plug-in slot 15 .

[0032] When the sealing ring 11 penetrates deeper, the airtight pad 13 installed on one side of the sealing ring 11 will contact with one side of the pipe and align and squeeze. When the pipe is squeezed, the gap between the airtight pad 13 will become smaller, thereby improving the sealing performance between the pipe and the expansion joint. The inner wall of the sleeve tube 3 is installed with a sealing rubber 5. At this time, the sealing rubber 5 will contact with the pipe due to squeezing, thereby further improving the sealing effect.

[0033] The working principle and use process of the utility model are as follows: when an expansion joint is needed, the pipe to be connected is inserted into the sleeve pipe 3 installed on one side surface of the sealing pipe 1. When the two sleeve pipes 3 are plugged into the ends of the two pipes, the sealing pipe 1 is rotated so that the fixing holes 6 opened on the surface of one side of the sleeve pipe 3 are aligned with the bolt holes 7 between the pipes. When the alignment is completed, the two sealing rings 11 are placed on the outer surface of the pipe, and the plug-in plate 14 installed on the surface of one side of the sealing ring 11 is inserted into the plug-in hole opened on the surface of one side of the other sealing ring 11. When the plug-in plate 14 is inserted into the plug-in hole, the two sealing rings 11 will form a circular ring and wrap the pipe. When the wrapping is completed, the sealing ring 11 is pushed to move, so that the sealing ring 11 can be sealed. The sealing ring 11 approaches the inner wall of the sleeve tube 3. When the two contact each other, the sealing ring 11 will be inserted into the inner wall of the sleeve tube 3, which will drive the sealing ring 11 to rotate. When the sealing ring 11 rotates, the sealing thread 12 provided on its outer surface will mesh with the thread groove 4 on the inner wall of the sleeve tube 3, and the sealing ring 11 will continue to go deeper through continuous rotation. When the sealing ring 11 goes deeper, the airtight gasket 13 installed on one side surface will contact with one side surface of the pipe and align and squeeze. When the pipe is squeezed, the gap between the airtight gasket 13 will become smaller, thereby improving the sealing performance between the pipe and the expansion joint. The inner wall of the sleeve tube 3 is installed with a sealing rubber 5, and the sealing rubber 5 will contact with the pipe due to squeezing, thereby further improving the sealing effect.

[0034] When the expansion joint and the two pipes are connected to each other, the bolt 7 is inserted into the inner wall of the fixing hole 6. When the bolt 7 is inserted into the inner wall of the fixing hole 6, the bolt 7 will pass through the bolt 7 holes on the surface of the pipe and the sealing ring 11 at the same time. When the insertion is completed, the limit nut 8 installed on its outer surface is rotated. When the limit nut 8 rotates, it will move along the outer surface of the bolt 7. When the limit nut 8 moves, it will push the return spring 9 on one side of the surface to move. When the other end of the return spring 9 is adjusted to contact with one side surface of the sleeve 3, the adjustment of the limit bolt 7 is stopped. The fixing nut 10 is sleeved on one side surface of the bolt 7 and aligned and rotated to make one side surface of the sealing ring 11 contact each other, thereby fixing the pipeline. When the pipeline shakes during use, the sealing tube 1 and the expansion groove 2 will make corresponding adjustments according to the amplitude of the shaking. When the pipeline shakes, the change in spacing will squeeze the reset spring 9 sleeved on the outer surface of the bolt 7. At this time, the squeezed reset spring 9 will reset when the squeezing force generated by the shaking disappears. The reset spring 9 squeezes the sleeve tube 3, thereby assisting the pipeline and the expansion joint to return to the initial alignment state.

Claims

1. A novel high-sealing non-metallic expansion joint, comprising a sealing tube (1) and an expansion groove (2), wherein the expansion grooves (2) are a plurality of equidistantly distributed on the outer surface of the sealing tube (1), characterized in that: A sleeve tube (3) is installed on one side surface of the sealing tube (1), a threaded groove (4) is provided on the inner wall of the sleeve tube (3), a sealing rubber (5) is installed on the inner wall of the sleeve tube (3), a fixing hole (6) is provided on one side surface of the sleeve tube (3), a fixing component is installed on the inner wall of the sleeve tube (3), and a sealing component is installed on the inner wall of the sleeve tube (3).

2. A novel high-sealing non-metallic expansion joint according to claim 1, characterized in that: There are two sleeve tubes (3), which are distributed at one end and the other end of the sealing tube (1). Ten fixing holes (6) are distributed on one side surface of each sealing tube (1). A sealing rubber (5) is distributed on the inner wall of each sealing tube (1). A threaded groove (4) is opened on the inner wall of each sealing tube (1). The sealing tube (1) and the expansion groove (2) are both made of plastic.

3. A novel high-sealing non-metallic expansion joint according to claim 1, characterized in that: The fixing assembly comprises a bolt (7), a limiting nut (8) is installed on the outer surface of the bolt (7), a return spring (9) is installed on one side surface of the limiting nut (8), a fixing nut (10) is installed on the outer surface of the bolt (7), and the bolt (7) is installed on the inner wall of the fixing hole (6).

4. A novel high-sealing non-metallic expansion joint according to claim 3, characterized in that: There are four bolts (7), which are equidistantly distributed in a circular array on the inner wall of the fixing hole (6). The outer surface of the bolt (7) is movably plugged into the inner wall of the fixing hole (6). Two limiting nuts (8) are distributed on the outer surface of each bolt (7). Two fixing nuts (10) are distributed on the outer surface of each bolt (7). Two return springs (9) are sleeved on the outer surface of each bolt (7). One end of the return spring (9) is in movably contact with one side surface of the limiting nut (8), and the other end of the return spring (9) is in movably contact with one side surface of the sleeve tube (3).

5. A novel high-sealing non-metallic expansion joint according to claim 1, characterized in that: The sealing assembly comprises a sealing ring (11), the outer surface of the sealing ring (11) is provided with a sealing thread (12), one side surface of the sealing ring (11) is provided with an airtight gasket (13), one side surface of the sealing ring (11) is provided with a plug-in plate (14), one side surface of the sealing ring (11) is provided with a plug-in groove (15), and the sealing ring (11) is installed on the inner wall of the sleeve tube (3).

6. A novel high-sealing non-metallic expansion joint according to claim 5, characterized in that: There are two sealing rings (11), and the outer surfaces of the two sealing rings (11) are both provided with sealing threads (12). The sealing threads (12) are movably and rotatably connected to the inner wall of the thread groove (4), and an airtight gasket (13) is installed on one side surface of each sealing ring (11).

7. A novel high-sealing non-metal expansion joint according to claim 5, characterized in that: A plug-in plate (14) is installed on one side surface of each sealing ring (11), and a plug-in groove (15) is opened and closed on one side surface of each sealing ring (11), and the plug-in plate (14) is movably plugged into the inner wall of the plug-in groove (15).

Images