CN219413823U

CN219413823U - Metal hose

Info

Publication number: CN219413823U
Application number: CN202320597989.3U
Authority: CN
Inventors: 杨选飞
Original assignee: Guangfeng Industrial Co ltd
Current assignee: Guangfeng Industrial Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-25
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a metal hose, which comprises an inner connecting pipe and two butt flanges with through holes, wherein two ends of the inner connecting pipe are respectively extended with an extension section penetrating through the two through holes, a backing ring positioned on the other side of the butt flange relative to the inner connecting pipe and one end face of the inner connecting pipe opposite to the butt flange is uniformly arranged on the two extension sections, the backing ring is matched with the butt flange to form a seal, an elastic outer connecting pipe is sleeved outside the inner connecting pipe, and a detachable sealing assembly is arranged between the two ends of the outer connecting pipe and the two butt flanges. The utility model has the following advantages and effects: the utility model has longer service life and better practicability.

Description

Metal hose

Technical Field

The utility model relates to a pipe fitting, in particular to a metal hose.

Background

The metal hose is used as damping element, compensating element, sealing element, valve element and pipeline connector, and is widely used in automatic control and measuring instrument, vacuum technology, mechanical industry, electric power industry, traffic transportation and atomic energy industry. The flexible pressure-resistant pipe fitting is used as a flexible pressure-resistant pipe fitting which is arranged in a liquid conveying system and is used for compensating the mutual displacement of connecting ends of pipelines or machines and equipment, and has the characteristics of good flexibility, light weight, corrosion resistance, fatigue resistance, high and low temperature resistance and the like.

The existing metal hose comprises a connecting pipe and butt flanges arranged at two ends of the connecting pipe, and sealing is achieved between the butt flanges and the connecting pipe through welding. When the pressure pulsation frequency of the fluid medium in the hose is coincident with the natural frequency of the hose in the flowing process, the hose can be made to resonate; the weld is easy to crack for a long time, thereby affecting the tightness of the hose. And the existing metal hose only has one layer of sealing structure, and once the sealing structure is broken, the medium leakage can be caused, so that the metal hose cannot be suitable for severe working condition environments, and the practicability is poor.

Disclosure of Invention

The utility model aims to provide a metal hose which is longer in service life and better in practicability.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a metal collapsible tube, includes interior connecting tube and two butt flange that have the through-hole, interior connecting tube both ends all extend have the extension section that passes two through-holes respectively, two the homogeneity is provided with the backing ring that is located the butt flange for interior connecting tube opposite side, backing ring cooperation butt flange are in opposite directions and are connected tube a terminal surface and constitute sealedly, interior connecting tube overcoat is equipped with elastic outer connecting tube, all is equipped with detachable seal assembly between outer connecting tube's both ends and two butt flanges.

Through adopting above-mentioned technical scheme, metal collapsible tube passes through butt flange fastening connection on butt flange and the pipeline, and the backing ring after fastening connection is pressed from both sides tightly in the centre by two butt flanges to realize the seal between backing ring and the two butt flange three, make the fluid medium pass backing ring and extension in proper order get into interior connecting pipe, with this life who prolongs metal collapsible tube. The two-way sealing of the metal hose is realized by matching the outer connecting pipe with the inner connecting pipe, and the matching of the two parts can be well adapted to a more severe working condition environment by complementation in material property, so that the metal hose has better practicability.

Further provided is that: the two butt flanges are provided with caulking grooves for the cushion rings to be embedded towards one end face of the cushion rings, the cushion rings are matched with the caulking grooves to form a seal, and the cushion rings protrude out of the caulking grooves.

Through adopting above-mentioned technical scheme, the setting of caulking groove is fixed a position the position of backing ring and is increased the sealing contact surface between backing ring and the flange both when sealed, realizes the better accurate nature of backing ring position in the butt joint process of assurance.

Further provided is that: the sealing assembly comprises a butt joint ring integrally arranged on the outer connecting pipe, a pressing ring for pressing the butt joint ring and a plurality of fastening bolts penetrating through the pressing ring and in threaded connection with the butt joint flange, wherein the fastening bolts are distributed around the circle center of the pressing ring.

Through adopting above-mentioned technical scheme, the clamping ring presses and holds docking collar and face away from docking flange one side, then applies even pressure to hold sealing force to the docking collar through fastening bolt cooperation clamping ring to this realizes sealing connection between outer connecting pipe and the flange two, simple structure, easy dismounting.

Further provided is that: every the butt joint flange is located seal assembly's outer lane all fixedly is provided with the isolating ring of flexibility, two be connected with the cover in the protective sheath of outer connecting pipe between the isolating ring, all be equipped with coupling assembling between protective sheath both ends and the two isolating rings.

Through adopting above-mentioned technical scheme, the isolating ring cooperates the protective sheath to protect outer connecting pipe and interior connecting pipe, avoids these two outside atress, prolongs the life of these two.

Further provided is that: the connecting assembly comprises a butt joint supporting ring fixedly arranged at the port of the protective sleeve and a butt joint ring groove formed in the inner peripheral wall of the isolation ring and clamped with the butt joint supporting ring, and the protective sleeve extends towards the isolation ring to clamp the butt joint supporting ring to the butt joint ring groove.

By adopting the technical scheme, the butt joint supporting ring extends into the isolating ring, then the butt joint supporting ring is clamped into the butt joint ring groove in a mode of necking by extruding the isolating ring to form connection between the isolating ring and the protective sleeve, and the structure is simple and the assembly is convenient.

Further provided is that: the protective sleeve is a metal net sleeve.

By adopting the technical scheme, the metal net sleeve has flexibility and strength, and can play an optimal protection role.

In summary, the utility model has the following beneficial effects: the utility model has longer service life and better practicability.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. an inner connecting pipe; 2. a through hole; 3. a butt flange; 4. an extension section; 5. a backing ring; 6. an outer connection tube; 7. a seal assembly; 71. a docking collar; 72. a compression ring; 73. a fastening bolt; 8. a caulking groove; 9. a spacer ring; 10. a protective sleeve; 11. a connection assembly; 111. a butt joint supporting ring; 112. and (5) butting ring grooves.

Description of the embodiments

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a metal hose comprises an inner connecting pipe 1 and two butt flanges 3 with through holes 2, wherein the two ends of the inner connecting pipe 1 are respectively extended with an extension section 4 penetrating through the two through holes 2, the two extension sections 4 are uniformly provided with backing rings 5 positioned on the other side of the butt flanges 3 relative to the inner connecting pipe 1, one end face of each of the two butt flanges 3, facing the backing ring 5, is provided with a caulking groove 8 for embedding the backing ring 5, and the backing ring 5 is matched with the caulking groove 8 to form a seal and the backing ring 5 protrudes out of the caulking groove 8. The inner connecting pipe 1 is sleeved with an elastic outer connecting pipe 6, and a detachable sealing assembly 7 is arranged between two ends of the outer connecting pipe 6 and the two butt flanges 3.

The sealing assembly 7 comprises a butt joint ring 71 integrally arranged on the outer connecting pipe 6, a pressing ring 72 for pressing the butt joint ring 71 and a plurality of fastening bolts 73 penetrating through the pressing ring 72 and in threaded connection with the butt joint flange 3, wherein the fastening bolts 73 are circumferentially distributed around the circle center of the pressing ring 72. Each butt flange 3 is located the outer lane of sealing component 7 and all fixedly is provided with flexible isolating ring 9, is connected with the protective sheath 10 of suit in outer connecting pipe 6 between two isolating rings 9, all is equipped with coupling assembling 11 between protective sheath 10 both ends and two isolating rings 9.

The connection assembly 11 comprises a butt-joint supporting ring 111 fixedly arranged at the port of the protection sleeve 10 and a butt-joint ring groove 112 formed in the inner peripheral wall of the isolation ring 9 in a bending mode and clamped with the butt-joint supporting ring 111, and the protection sleeve 10 extends towards the isolation ring 9 to clamp the butt-joint supporting ring 111 to the butt-joint ring groove 112. The protective sleeve 10 is a metal net sleeve, the inner connecting pipe 1 is a metal corrugated pipe, the isolating ring 9 is a stainless steel ring piece, and the outer connecting pipe 6 and the butt joint ring 71 are all made of rubber.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. Metal hose comprising an inner connection tube (1) and two counterflanges (3) with through holes (2), characterized in that: the utility model discloses an inner connecting pipe, including inner connecting pipe (1), backing ring (5) cooperation butt joint flange (3), outer connecting pipe (1) overcoat is equipped with elastic outer connecting pipe (6), all is equipped with detachable seal assembly (7) between outer connecting pipe (6) both ends and two butt joint flanges (3), inner connecting pipe (1) both ends all extend have extension section (4) that pass two through-holes (2) respectively, two the homogeneity is provided with on extension section (4) and is located backing ring (5) of butt joint flange (3) opposite side for inner connecting pipe (1), backing ring (5) cooperation butt joint flange (3) one end constitutes sealedly in opposite directions.

2. A metal hose according to claim 1, wherein: the two butt flanges (3) are provided with caulking grooves (8) for the caulking of the backing ring (5) towards one end face of the backing ring (5), the backing ring (5) is matched with the caulking grooves (8) to form a seal, and the backing ring (5) protrudes out of the caulking grooves (8).

3. A metal hose according to claim 1, wherein: the sealing assembly (7) comprises a butt joint ring (71) integrally arranged on the outer connecting pipe (6), a pressing ring (72) for pressing the butt joint ring (71) and a plurality of fastening bolts (73) which penetrate through the pressing ring (72) and are in threaded connection with the butt joint flange (3), wherein the fastening bolts (73) are distributed around the circle center of the pressing ring (72).

4. A metal hose according to claim 1, wherein: every butt joint flange (3) is located sealing component (7) the outer lane all is fixed and is provided with flexible isolating ring (9), two be connected with between isolating ring (9) cover in protective sheath (10) of outer connecting pipe (6), all be equipped with coupling assembling (11) between protective sheath (10) both ends and two isolating ring (9).

5. The metal hose of claim 4, wherein: the connecting assembly (11) comprises a butt joint supporting ring (111) fixedly arranged at the port of the protective sleeve (10) and a butt joint ring groove (112) formed on the inner peripheral wall of the isolation ring (9) and clamped with the butt joint supporting ring (111), and the protective sleeve (10) extends towards the isolation ring (9) to clamp the butt joint supporting ring (111) with the butt joint ring groove (112).

6. A metal hose according to claim 5, wherein: the protective sleeve (10) is a metal net sleeve.