Stainless steel metal hose and quick connecting structure thereof

Abstract

The utility model discloses a stainless steel metal hose and a quick connecting structure thereof, relates to the technical field of pipe fittings, and provides the following scheme aiming at the problems that in the prior art, when a pipe body is damaged and leaks, the whole body needs to be replaced, the price of a metal pipe fitting is far higher than that of a plastic pipe fitting, and the use cost is high. Comprising a pipe body, the pipe body comprises a metal outer pipe, a plastic inner pipe inserted into the metal outer pipe and connecting rings welded and fixed to the two ends of the metal outer pipe, and the two ends of the pipe body are connected with a first connecting assembly and a second connecting assembly respectively. When the plastic inner pipe in the pipe body is damaged, the first connecting assembly and the second connecting assembly are rotated, then the metal outer pipe is held, the plastic inner pipe is pulled out of one end of the metal outer pipe, a new plastic inner pipe is inserted, and then the first connecting assembly and the second connecting assembly are connected to the two ends of the pipe body in a screwed mode. Therefore, the metal hose can be maintained.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings technology, and in particular to a stainless steel metal hose and its quick-connect structure. Background Technology

[0002] Stainless steel corrugated flexible hoses are installed in pipeline systems as flexible, pressure-resistant pipe fittings to compensate for the relative displacement of pipe or machine / equipment connection ends, absorb vibration energy, and play a role in vibration reduction and noise reduction. They possess numerous advantages, including high flexibility, light weight, corrosion resistance, fatigue resistance, and resistance to high and low temperatures. Made of thin-walled stainless steel, these corrugated hoses are flexible and possess the advantages of metal pipes, making them ideal for use in water, oil, and gas pipelines. Stainless steel flexible hoses offer various connection methods, each with its own advantages and disadvantages.

[0003] A search revealed that the patent (application number: 202410716004.3) discloses "a stainless steel metal flexible hose that is easy to connect". This device sets connecting handles and connecting heads at both ends of the stainless steel metal flexible hose, and with the help of screw handles, threaded connecting tubes and threaded sleeves, it realizes quick and easy connection between hoses. Users only need to rotate the screw handle to splice the two sets of hoses end to end, which greatly simplifies the installation steps and improves work efficiency.

[0004] However, when the pipe body of the above device is damaged and leaks during use, the entire device needs to be replaced. The price of metal pipe fittings is much higher than that of plastic pipe fittings, resulting in high usage costs. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a stainless steel metal hose and its quick connection structure, which overcomes the shortcomings of the prior art and effectively solves the problem that when the hose body is damaged and leaks, the whole thing needs to be replaced, and the price of metal fittings is much higher than that of plastic fittings, resulting in high usage costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A stainless steel flexible metal hose and its quick-connect structure include a tube body. The tube body includes a metal outer tube, a plastic inner tube inserted into the metal outer tube, and connecting rings welded and fixed to both ends of the metal outer tube. The two ends of the tube body are respectively connected to a first connecting assembly and a second connecting assembly. The first connecting assembly includes a first tapered tube, an externally threaded tube welded and fixed to one end of the first tapered tube, a first fixing ring sleeved and fixed to the outer wall of the externally threaded tube near one end of the first tapered tube, and a first internally threaded ring welded and fixed to one side of the outer wall of the first fixing ring. The second connecting assembly includes a second tapered tube, a connecting tube welded and fixed to one end of the second tapered tube, an internally threaded tube sleeved and fixed to the outer wall of the connecting tube away from the second tapered tube, a second fixing ring sleeved and fixed to the outer wall of the connecting tube near one end of the second tapered tube, and a second internally threaded ring welded and fixed to one side of the outer wall of the second fixing ring.

[0008] By screwing the internally threaded tube to the externally threaded tube, the length of two adjacent metal hoses can be quickly extended. When the plastic inner tube in the tube body is damaged, by rotating the first connecting component and the second connecting component, the first internally threaded ring and the second internally threaded ring are disengaged from the connecting rings at both ends of the tube body, so that the first tapered tube and the second tapered tube are moved away from both ends of the plastic inner tube. Holding the metal outer tube, the plastic inner tube is pulled out from one end of the metal outer tube and a new plastic inner tube is inserted. Then, the first connecting component and the second connecting component are screwed to both ends of the tube body, and the repair of the metal hose can be completed.

[0009] Preferably, the outer wall of the metal outer tube is provided with anti-slip rings distributed at equal intervals, and the inner diameter of the metal outer tube is equal to the outer diameter of the plastic inner tube.

[0010] The anti-slip rings improve the friction of the outer metal tube, making it easier to grip the tube. The outer wall of the inner plastic tube is in close contact with the inner wall of the outer metal tube, preventing wrinkles from forming inside the outer metal tube when the tube is bent.

[0011] Preferably, the sum of the lengths of the two connecting rings and the metal outer tube is equal to the length of the plastic inner tube, and the inner diameter of the connecting ring is equal to the outer diameter of the plastic inner tube.

[0012] After the plastic inner tube is inserted into the connecting ring and the metal outer tube, it can fit perfectly with the connecting ring and the metal outer tube.

[0013] Preferably, an annular groove is formed on one side of the outer wall of the connecting ring, and a sealing ring is inserted into one side of the inner wall of the annular groove, and the inner wall of the inner ring of the annular groove is threaded.

[0014] The first and second connecting components at both ends are connected by a set annular groove and threads.

[0015] Preferably, the maximum outer diameter of both the first tapered tube and the second tapered tube is greater than the inner diameter of the plastic inner tube, and the minimum outer diameter of both the first tapered tube and the second tapered tube is less than the inner diameter of the plastic inner tube.

[0016] By inserting the first and second tapered tubes into the two ends of the plastic inner tube respectively, and having the tapered outer walls of the first and second tapered tubes abut against the openings at both ends of the plastic inner tube, the sealing of the insertion can be ensured.

[0017] Preferably, both the first internal threaded ring and the second internal threaded ring are adapted to the annular groove, and both the first internal threaded ring and the second internal threaded ring form a threaded engagement with the thread in the annular groove.

[0018] The first and second internal threaded rings are screwed into the annular groove, so that the first connecting assembly and the second connecting assembly are respectively connected and fixed at both ends of the tube body.

[0019] Preferably, the internally threaded tube and the externally threaded tube form a threaded fit, and a sealing ring is inserted into the end of the internally threaded tube near the connecting tube.

[0020] The internally threaded pipe is screwed into the externally threaded pipe, which can quickly extend the length of the metal hose.

[0021] The beneficial effects of this utility model are as follows:

[0022] When the inner plastic tube inside the tube is damaged, the plastic inner tube can be pulled out from one end of the outer metal tube by rotating the first and second connecting components, while holding the outer metal tube. A new plastic inner tube can then be inserted. The first and second connecting components can then be screwed onto both ends of the tube. This completes the repair of the metal hose and effectively solves the problem that in the existing technology, when the tube is damaged and leaks, the entire hose needs to be replaced, and the price of metal fittings is much higher than that of plastic fittings, resulting in higher usage costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a stainless steel metal hose and its quick-connect structure proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of one end of the tube body of a stainless steel metal hose and its quick-connect structure proposed in this utility model.

[0025] Figure 3 This is a structurally exploded diagram of the first connecting component of a stainless steel metal hose and its quick-connect structure proposed in this utility model.

[0026] Figure 4This is a structurally disassembled schematic diagram of the second connecting component of a stainless steel metal hose and its quick-connect structure proposed in this utility model.

[0027] In the figure: 1. Pipe body; 2. Metal outer tube; 3. Plastic inner tube; 4. Connecting ring; 5. Annular groove; 6. First connecting assembly; 7. Second connecting assembly; 8. First tapered tube; 9. Externally threaded tube; 10. First fixing ring; 11. First internally threaded ring; 12. Second tapered tube; 13. Connecting tube; 14. Internally threaded tube; 15. Second fixing ring; 16. Second internally threaded ring. Detailed Implementation

[0028] 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.

[0029] Example:

[0030] Reference Figure 1-4 A stainless steel flexible metal hose and its quick-connect structure include a tube body 1, which includes a metal outer tube 2, a plastic inner tube 3 inserted into the metal outer tube 2, and connecting rings 4 welded and fixed to both ends of the metal outer tube 2. The two ends of the tube body 1 are respectively connected to a first connecting component 6 and a second connecting component 7. The first connecting component 6 includes a first tapered tube 8, an externally threaded tube 9 welded and fixed to one end of the first tapered tube 8, a first fixing ring 10 sleeved and fixed to the outer wall of the externally threaded tube 9 near the end of the first tapered tube 8, and a first internally threaded ring 11 welded and fixed to one side of the outer wall of the first fixing ring 10. The second connecting component 7 includes a second tapered tube 12, a connecting tube 13 welded and fixed to one end of the second tapered tube 12, an internally threaded tube 14 sleeved and fixed to the outer wall of the connecting tube 13 away from the end of the second tapered tube 12, a second fixing ring 15 sleeved and fixed to the outer wall of the connecting tube 13 near the end of the second tapered tube 12, and a second internally threaded ring 16 welded and fixed to one side of the outer wall of the second fixing ring 15.

[0031] The outer wall of the metal outer tube 2 is provided with anti-slip rings distributed at equal intervals. The inner diameter of the metal outer tube 2 is equal to the outer diameter of the plastic inner tube 3. The anti-slip rings can improve the friction of the metal outer tube 2, making it easier to grip the tube body 1. The outer wall of the plastic inner tube 3 is in close contact with the inner wall of the metal outer tube 2 to prevent the plastic inner tube 3 from wrinkling inside the metal outer tube 2 when the tube body 1 is bent. The sum of the lengths of the two connecting rings 4 and the metal outer tube 2 is equal to the length of the plastic inner tube 3. The inner diameter of the connecting ring 4 is equal to the outer diameter of the plastic inner tube 3. After the plastic inner tube 3 is inserted into the connecting ring 4 and the metal outer tube 2, it can fit and match the connecting ring 4 and the metal outer tube 2 perfectly. An annular groove 5 is opened on one side of the outer wall of the connecting ring 4. A sealing ring is inserted into one side of the inner wall of the annular groove 5. The inner wall of the inner ring of the annular groove 5 is threaded. The first connecting component 6 and the second connecting component 7 at both ends are connected through the annular groove 5 and the thread.

[0032] The maximum outer diameter of the first tapered tube 8 and the second tapered tube 12 is greater than the inner diameter of the plastic inner tube 3, and the minimum outer diameter of the first tapered tube 8 and the second tapered tube 12 is smaller than the inner diameter of the plastic inner tube 3. By inserting the first tapered tube 8 and the second tapered tube 12 into the two ends of the plastic inner tube 3 respectively, and by having the tapered outer walls of the first tapered tube 8 and the second tapered tube 12 abut against the openings at both ends of the plastic inner tube 3, the sealing of the insertion can be guaranteed. The first internal threaded ring 11 and the second internal threaded ring 16 are both adapted to the annular groove 5. Both the threaded ring 11 and the second internal threaded ring 16 form a threaded engagement with the thread in the annular groove 5. The first internal threaded ring 11 and the second internal threaded ring 16 are screwed into the annular groove 5, so that the first connecting component 6 and the second connecting component 7 are respectively connected and fixed to the two ends of the tube body 1. The internal threaded tube 14 forms a threaded engagement with the external threaded tube 9. A sealing ring is inserted into the end of the internal threaded tube 14 near the connecting tube 13. The internal threaded tube 14 and the external threaded tube 9 are screwed together, which can quickly extend the length of the metal hose.

[0033] Working principle:

[0034] In use, by screwing the internal threaded tube 14 and the external threaded tube 9 together, the length of two adjacent metal hoses can be quickly extended. When the plastic inner tube 3 in the tube body 1 is damaged, by rotating the first connecting component 6 and the second connecting component 7, the first internal threaded ring 11 and the second internal threaded ring 16 are disengaged from the connecting rings 4 at both ends of the tube body 1, so that the first tapered tube 8 and the second tapered tube 12 are moved away from both ends of the plastic inner tube 3. Hold the metal outer tube 2, pull the plastic inner tube 3 out from one end of the metal outer tube 2, and insert a new plastic inner tube 3. Then screw the first connecting component 6 and the second connecting component 7 to both ends of the tube body 1, and the repair of the metal hose can be completed.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A stainless steel metal hose and its quick connection structure, comprising a pipe body (1), characterized in that, The tube body (1) includes a metal outer tube (2), a plastic inner tube (3) inserted into the metal outer tube (2), and connecting rings (4) welded and fixed to both ends of the metal outer tube (2). The two ends of the tube body (1) are respectively connected to a first connecting assembly (6) and a second connecting assembly (7). The first connecting assembly (6) includes a first tapered tube (8), an externally threaded tube (9) welded and fixed to one end of the first tapered tube (8), a first fixing ring (10) sleeved and fixed to the outer wall of the externally threaded tube (9) near one end of the first tapered tube (8), and a welded and fixed ring. The first internal threaded ring (11) is fixed to the outer wall of the first fixing ring (10) on one side. The second connecting assembly (7) includes a second tapered tube (12), a connecting tube (13) welded and fixed to one end of the second tapered tube (12), an internal threaded tube (14) sleeved and fixed to the outer wall of the connecting tube (13) at the end away from the second tapered tube (12), a second fixing ring (15) sleeved and fixed to the outer wall of the connecting tube (13) at the end close to the second tapered tube (12), and a second internal threaded ring (16) welded and fixed to the outer wall of the second fixing ring (15) on one side.

2. A stainless steel metal hose and its quick coupling structure according to claim 1, characterized in that, The outer wall of the metal outer tube (2) is provided with anti-slip rings distributed at equal intervals, and the inner diameter of the metal outer tube (2) is equal to the outer diameter of the plastic inner tube (3).

3. The stainless steel flexible metal hose and its quick coupling structure according to claim 1, characterized in that, The sum of the lengths of the two connecting rings (4) and the metal outer tube (2) is equal to the length of the plastic inner tube (3), and the inner diameter of the connecting rings (4) is equal to the outer diameter of the plastic inner tube (3).

4. The stainless steel flexible metal hose and its quick coupling structure according to claim 1, characterized in that, The outer wall of one side of the connecting ring (4) is provided with an annular groove (5), and a sealing ring is inserted into the inner wall of one side of the annular groove (5). The inner wall of the inner ring of the annular groove (5) is threaded.

5. The stainless steel flexible metal hose and its quick coupling structure according to claim 1, characterized in that, The maximum outer diameter of the first tapered tube (8) and the second tapered tube (12) is greater than the inner diameter of the plastic inner tube (3), and the minimum outer diameter of the first tapered tube (8) and the second tapered tube (12) is less than the inner diameter of the plastic inner tube (3).

6. A stainless steel flexible metal hose and its quick-connect structure according to claim 4, characterized in that, The first internal threaded ring (11) and the second internal threaded ring (16) are both adapted to the annular groove (5), and the first internal threaded ring (11) and the second internal threaded ring (16) are both threadedly engaged with the threads in the annular groove (5).

7. The stainless steel flexible metal hose and its quick coupling structure according to claim 1, characterized in that, The internally threaded tube (14) and the externally threaded tube (9) form a threaded fit, and a sealing ring is inserted into one end of the internally threaded tube (14) near the connecting tube (13).

Images