CN215111062U

CN215111062U - Metal hose with internal and external anti-corrosion functions

Info

Publication number: CN215111062U
Application number: CN202120932198.2U
Authority: CN
Inventors: 黄志华
Original assignee: Boa Shanghai Bellows Technology Co ltd
Current assignee: Boa Shanghai Bellows Technology Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-10
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses an inside and outside anticorrosive metal collapsible tube, the metal collapsible tube body comprises metal corrugated flexible pipe, pipe box and fire prevention cover and knot pressure formula end links, the pipe box has been cup jointed to the outside of metal corrugated flexible pipe, the fire prevention cover has been cup jointed to the outside of pipe box, be equipped with inside lining PTFE hose in the metal corrugated flexible pipe, the both ends of inside lining PTFE hose outwards extend the both ends of metal corrugated flexible pipe, it fixes on the both sides of fire prevention cover through using to detain pressure formula end links, and will detain pressure formula end links welding at pipe box both ends and at metal collapsible tube body both ends welding turn-ups sleeve and flange, form sealed face at metal collapsible tube body inside lining profile of tooth PTFE hose to flange side end face. The fireproof sleeve can prevent the outer surface of the metal hose body from being oxidized and corroded; the tooth-shaped PTFE hose is favorable for conveying strong corrosive media at high temperature, and the function of corrosion prevention inside and outside the metal hose is realized, so that the service life of the product is prolonged, and the assembly and maintenance are also convenient.

Description

Metal hose with internal and external anti-corrosion functions

Technical Field

The utility model belongs to the technical field of metal collapsible tube's technique and specifically relates to an inside and outside anticorrosion metal collapsible tube, in particular to its mechanical connection structure.

Background

The metal hose is an important connecting component in engineering technology and is formed by combining a corrugated flexible pipe, a net cover and a joint. The corrugated flexible pipe is a body of the metal hose, can compensate axial displacement and transverse displacement of the pipeline, and can absorb high-frequency vibration caused by machinery, so that flexible connection between the pipeline and equipment is realized. However, when the metal hose is used for conveying high-temperature and strong-corrosive media, the metal hose is easily oxidized and rusted, and finally, holes are formed, so that safety accidents are caused.

Disclosure of Invention

An object of the utility model is to provide an inside and outside anticorrosive metal collapsible tube. The high-temperature-resistant and corrosion-resistant conveying device has the advantages of good high-temperature-resistant and corrosion-resistant effects, long service life of products and very convenient assembly and maintenance, and is beneficial to conveying substances needing high-temperature resistance and corrosion resistance. Overcomes the defects in the prior art.

In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides an inside and outside anticorrosive metal collapsible tube, includes the metal collapsible tube body, its characterized in that: the metal hose body is composed of a metal corrugated flexible pipe, a pipe sleeve, a fireproof sleeve and a buckling type end ring, the pipe sleeve is sleeved outside the metal corrugated flexible pipe, the fireproof sleeve is sleeved outside the pipe sleeve, a lining PTFE hose is arranged in the metal corrugated flexible pipe, two ends of the lining PTFE hose outwards extend out of two ends of the metal corrugated flexible pipe, a lap joint pipe is sleeved outside extension sections at two ends of the lining PTFE hose, buckling type end rings are arranged at two ends of the metal corrugated flexible pipe, the pipe sleeve and the fireproof sleeve, one end of the lap joint pipe is connected with the metal corrugated flexible pipe, a lap joint flange is sleeved at the other end of the lap joint pipe, and a flanging matched with the lap joint flange is formed at the other end of the lap joint pipe, the outer wall of the PTFE lining hose is in a tooth shape, the tooth shape is attached to the inner wall surface of the metal corrugated flexible pipe, and the PTFE lining hose extends to the side end face of the flange to form a sealing surface.

The utility model discloses an inside and outside anticorrosive metal collapsible tube compares with prior art, novel structure, simple, and reasonable in design fixes on the both sides of fire prevention cover through using the formula end links of withholding to withholding formula end links welding at the pipe box both ends and at metal collapsible tube body both ends welding turn-ups sleeve and flange, form sealed face at metal collapsible tube body inside lining profile of tooth PTFE hose to flange side end face. The fireproof sleeve can prevent the outer surface of the metal hose body from being oxidized and corroded; the tooth-shaped PTFE hose is favorable for conveying strong corrosive media at high temperature, and the function of corrosion prevention inside and outside the metal hose is realized, so that the service life of the product is prolonged, and the assembly and maintenance are also convenient.

Drawings

Fig. 1 is a schematic longitudinal sectional structure of the present invention.

Fig. 2 is an external structural view of fig. 1.

Fig. 3 is a partial schematic view of the metal hose with corrosion protection function.

Fig. 4 is a perspective view of the present invention.

FIG. 5 is a schematic view of the structure of a tooth-shaped PTFE hose.

In the figure: 1. a metal corrugated flexible tube; 2. pipe sleeve; 3. a fireproof sleeve; 4. a crimping end ring; 5. overlapping the connecting pipes; 6. a loop flange; 7. lining with a tooth-shaped PTFE hose; 8. tooth profile; 9. flanging; 10. a sealing surface; 11. and (4) micro-protrusions.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

The utility model discloses an inside and outside anticorrosive metal collapsible tube, including the metal collapsible tube body, it is different from prior art and lies in: the metal hose body is composed of a metal corrugated flexible pipe 1, a pipe sleeve 2, a fireproof sleeve 3 and a buckling type end ring 4, the pipe sleeve 2 is sleeved outside the metal corrugated flexible pipe 1, the fireproof sleeve 3 is sleeved outside the pipe sleeve 2, a lining PTFE flexible pipe 7 is arranged in the metal corrugated flexible pipe 1, two ends of the lining PTFE flexible pipe 7 extend outwards to two ends of the metal corrugated flexible pipe 1, a lap joint pipe 5 is sleeved outside extension sections at two ends of the lining PTFE flexible pipe 7, buckling type end rings 4 are arranged at two ends of the metal corrugated flexible pipe 1, the pipe sleeve 2 and the fireproof sleeve 3, one end of the lap joint pipe 5 is connected with the metal corrugated flexible pipe 1, a loop joint pipe flange 6 is sleeved at the other end of the lap joint pipe 5, a flange 9 matched with the loop flange 6 is formed at the other end of the lap joint pipe 5, the outer wall of the lining PTFE flexible pipe 7 is in a tooth shape 8, and the tooth shape 8 is attached to the surface of the inner wall of the metal corrugated flexible pipe 1, the PTFE lining hose 7 extends to the end face of the flange 6 side to form a sealing surface 10.

In specific implementation, the inner wall of the crimping end ring 4 is distributed with micro protrusions 11, the micro protrusions 11 are in contact with the surface of the fireproof sleeve 3, and the micro protrusions 11 are embedded into the fireproof sleeve 3 to form a fixed structure.

The utility model relates to an inside and outside anticorrosive metal collapsible tube, especially can carry the metal collapsible tube who needs the strong corrosive medium under the high temperature. The fireproof sleeve is characterized in that buckling-pressing type end rings are sleeved at two ends of the fireproof sleeve respectively, the metal hose and the buckling-pressing type end rings are welded to form a whole, a plurality of small protrusions are arranged on the buckling-pressing type end rings, and a buckling-pressing process method is adopted after welding to ensure that the fireproof sleeve and the buckling-pressing type end rings are tightly connected, so that a product is not easy to loosen and fall off, and the high-temperature-resistant and corrosion-resistant effects of the surface of the product are improved; and the lining PTFE hose is attached to the inner wall surface of the metal hose and extends to the side end face of the flange to form a sealing surface, so that a strong corrosive medium at high temperature can be conveyed, and the internal and external anti-corrosion functions of the metal hose are realized.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides an inside and outside anticorrosive metal collapsible tube, includes the metal collapsible tube body, its characterized in that: the metal hose body is composed of a metal corrugated flexible pipe (1), a pipe sleeve (2), a fireproof sleeve (3) and a buckling type end ring (4), the pipe sleeve (2) is sleeved outside the metal corrugated flexible pipe (1), the fireproof sleeve (3) is sleeved outside the pipe sleeve (2), a lining PTFE hose (7) is arranged in the metal corrugated flexible pipe (1), two ends of the lining PTFE hose (7) outwards extend out of two ends of the metal corrugated flexible pipe (1), a lap joint pipe (5) is sleeved outside extension sections of two ends of the lining PTFE hose (7), the metal corrugated flexible pipe (1), the pipe sleeve (2) and two ends of the fireproof sleeve (3) are provided with the buckling type end ring (4), one end of the lap joint pipe (5) is connected with the metal corrugated flexible pipe (1), a lap joint flange (6) is sleeved at the other end of the lap joint pipe (5), and a turned-over edge (9) matched with the lap joint flange (6) is formed at the other end of the lap joint pipe (5), the outer wall of the lining PTFE hose (7) is in a tooth shape (8), the tooth shape (8) is attached to the surface of the inner wall of the metal corrugated flexible pipe (1), and the lining PTFE hose (7) extends to the side end face of the flange (6) to form a sealing surface (10).

2. The internal and external corrosion-resistant metal hose according to claim 1, wherein: the inner wall of the buckling type end ring (4) is distributed with micro protrusions (11), the micro protrusions (11) are in contact with the surface of the fireproof sleeve (3), and the micro protrusions (11) are embedded into the fireproof sleeve (3) to form a fixed structure.