CN201688047U

CN201688047U - Metal hose

Info

Publication number: CN201688047U
Application number: CN2010201853314U
Authority: CN
Inventors: 黄皓
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-12-29
Anticipated expiration: 2020-04-30

Abstract

The utility model discloses a metal hose, comprising a metal corrugated pipe. Connecting pipes are formed at two ends of the metal corrugated pipe and are formed in an extrusive manner with outer convex clamping rings for the connection of a connector, the connector comprises an external threaded pipe and a nut fit for the external threaded pipe, the nut is installed between the clamping ring and the connection pipe, the external threaded pipe is sleeved on the outer surface of the connecting pipe, an annular pad is arranged between the end face of the external threaded pipe and the clamping ring, in addition, the outer surface of the metal corrugated pipe is coated with a metal screen, the outer surface of the end part of the metal screen is provided with a protective sheath through which the metal screen is fixed at the outer surface of the metal corrugated pipe, and a ferrule is arranged between the metal screen and the corrugation of the metal corrugated pipe. The metal corrugated pipe of the metal hose is integrally formed with the connecting pipes, thereby reducing welding process, saving cost and avoiding hidden problem of water leakage at weld; furthermore, the connection is achieved by the connector in cooperation with the clamping rings and the annular pads on the connecting pipes so as to obtain better sealing property at the junction and result in better safety.

Description

Metallic hose

Technical field

The utility model relates to a kind of metallic hose, specifically, relates to that a kind of technology is simple, Security is better, the metallic hose that cost of production is lower.

Background technique

What use at present all is high pressure resistant, resistant to elevated temperatures metallic hose, this special performances tends to cause the rapidoprint of metallic hose relatively more expensive, and not every place all needs certain high temperature resistant and high pressure resistant, such as blower fan, coiler or central air-conditioner etc., will cause the wasting of resources like this, and, everybody is employed high pressure resistant at present, at least need three road welding sequences in the course of working of resistant to elevated temperatures metallic hose, at first with metal bellows, cutting ferrule, wire netting and sheath weld together along the exterior edge face, form an integral body, form the end face of a welding simultaneously, again the end face of connecting tube and the end face of above-mentioned solder joint formation are welded together, complex process so not only, and the weld sealing is not fine, under situation of long duration, the phenomenon that weld may occur leaking so also can cause certain safety problem.

The model utility content

At above deficiency, the utility model provides that a kind of technology is simple, Security is better, the metallic hose that cost of production is lower, the connecting tube that it comprises metal bellows, is connected to the bellows two ends and communicates with it, connecting head all is installed on each connecting tube, and described connecting tube and bellows are integrally formed.

Extrusion moulding has the snap ring of evagination on the described connecting tube, described connecting head comprises a nut and the male-pipe that is spirally connected with nut, described nut is installed between snap ring and the bellows, and described nut inwardly is formed with the bulge loop that cooperates with snap ring near an end internal surface of bellows.

Described snap ring is equipped with loop pads away from a side of bellows.

Described wavy metal tube outer surface is coated with wire netting, and the end outer surface of described wire netting is provided with sheath, and wire netting is fixed on the outer surface of metal bellows by sheath.

Be provided with cutting ferrule between the end internal surface of described wire netting and the connecting tube, described cutting ferrule, wire netting and sheath are solder joint with the end face of wire netting, weld together.

Described male-pipe intermediate portion is provided with protuberance.

The beneficial effects of the utility model: compare with the conventional metals flexible pipe, metal bellows of the present utility model and connecting tube are one-body molded, reduced welding procedure, not only save cost, and the hidden danger of having avoided weld to leak, in addition, by snap ring on the connecting tube and the loop pads head that is connected, make the better tightness of joint.

Description of drawings

Fig. 1 is the sectional view of the utility model metallic hose.

Embodiment

Below in conjunction with accompanying drawing the utility model is further set forth.

As shown in Figure 1, metallic hose of the present utility model comprises metal bellows 1, metal bellows 1 is formed with connecting tube 11 (being that metal bellows 1 and connecting tube 11 are one-body molded) to two ends, extrusion moulding is useful on the evagination snap ring 111 that connects connecting head 2 on the connecting tube 11, connecting head 2 comprises male-pipe 22, and with male-pipe 22 nut engaged 21, male-pipe 22 intermediate portions are provided with protuberance 221, nut 21 inwardly is formed with the bulge loop 211 that cooperates with snap ring 111 near an end internal surface of bellows 1, nut 21 is installed between snap ring 111 and the bellows 1, male-pipe 22 is enclosed within connecting tube 11 outer surfaces, and the end face of male-pipe 22 contacts with snap ring 111, so just can be by the screw thread on the male-pipe 22, bulge loop 211, nut 21 is realized being connected of connecting head 2 and metal bellows 1 with snap ring 111.

Consider the problem of sealing, the utility model can also be provided with loop pads 6 between the end face of male-pipe 22 and snap ring 111, and loop pads 6 is enclosed within the outer wall of connecting tube 11; In addition, consider that metallic hose need bear certain pressure, the utility model can also cover layer of metal net 4 at the outer surface of metal bellows 1, and the end outer surface of wire netting 4 is provided with sheath 5, and wire netting 4 is fixed on the outer surface of metal bellows 1 by sheath 5.Concrete mode is that cutting ferrule 3, wire netting 4 and sheath 5 weld together along the end of wire netting 4, by extruding fixing metal net 4 between the lower end surface of cutting ferrule 3 and the ripple of metal bellows 1 (perhaps for exceeding the part of connecting tube).

The global shape of metallic hose of the present utility model is cylindric, certainly not only limit to shape therewith, its structure constituent element also is cylindric, welding sequence before joint of the present utility model has changed, can avoid the hidden danger that occurs leaking, Security is better, is mainly used in the place that is flexible coupling of blower fan, coiler or central air-conditioner.

Claims

1. metallic hose, it is characterized in that, the connecting tube (11) that it comprises metal bellows (1), is connected to described bellows (1) two ends and communicates with it all is equipped with connecting head (2) on each described connecting tube (11), and described connecting tube (11) is integrally formed with bellows (1).

2. metallic hose according to claim 1, it is characterized in that the last extrusion moulding of each described connecting tube (11) has the snap ring (111) of evagination, described connecting head (2) comprises a nut (21) and the male-pipe (22) that is spirally connected with nut (21), described nut (21) is installed between snap ring (111) and the bellows (1), and described nut (21) inwardly is formed with the bulge loop (211) that cooperates with snap ring (111) near an end internal surface of bellows (1).

3. metallic hose according to claim 2 is characterized in that described snap ring (111) is equipped with loop pads (6) away from a side of bellows (1).

4. according to claim 1,2 or 3 described metallic hoses, it is characterized in that described bellows (1) outer surface is coated with wire netting (4), the end outer surface of described wire netting (4) is provided with sheath (5), and wire netting (4) is fixed on the outer surface of bellows (1) by sheath (5).

5. metallic hose according to claim 4, it is characterized in that being provided with cutting ferrule (3) between the end internal surface of described wire netting (4) and the connecting tube (11), described cutting ferrule (3), wire netting (4) and sheath (5) are solder joint with the end face of wire netting (4), weld together.

6. metallic hose according to claim 2 is characterized in that described male-pipe (22) intermediate portion is provided with protuberance (221).