CN212056257U

CN212056257U - Corrugated pipe

Info

Publication number: CN212056257U
Application number: CN202020365900.7U
Authority: CN
Inventors: 周帅行
Original assignee: Jinhua Langtong Plastic Products Co ltd
Current assignee: Jinhua Langtong Plastic Products Co ltd
Priority date: 2020-03-21
Filing date: 2020-03-21
Publication date: 2020-12-01
Anticipated expiration: 2030-03-21

Abstract

The utility model discloses a corrugated pipe, its technical scheme main points are: the utility model provides a corrugated pipe, includes first bellows, second bellows, plastic hose and connecting bend, first bellows, second bellows parallel arrangement just connect through plastic hose, first bellows and second bellows are swing joint with connecting bend, first bellows includes inner tube and outer tube, be formed with the clearance between inner tube and the outer tube, connecting bend is equipped with the pipe fitting joint with the position that first bellows is connected, the appearance that the pipe fitting connects is the echelonment, the small circle terminal surface that the pipe fitting connects supports and presses in the inner tube, has improved the axial tensile force of body not enough, has reduced the fragility of body, prevents body bending deformation or fracture.

Description

Corrugated pipe

Technical Field

The utility model relates to a corrugated pipe material field, more specifically say, it relates to a bellows.

Background

The metal hose is a high-quality flexible pipeline in modern industrial pipelines. It mainly comprises a corrugated pipe, a metal net sleeve and a connecting joint. The inner pipe of the compensator is a thin-wall stainless steel corrugated pipe with a spiral or annular wave shape, the metal net cover on the outer layer of the corrugated pipe is woven by stainless steel wires or steel belts according to certain parameters, the joints at the two ends of the hose are matched with the joints of a client pipeline, the existing metal hose is a straight pipe, can not be directly used in occasions with narrow space, corner loops and the like, the compensation amount is limited, the space volume is increased when the compensator is used, and the guide frame is needed, so the cost is high.

The patent document CN207634831U discloses that a U-shaped corrugated metal hose can be used in a narrow space and a corner loop, but the bottoms of two pipes of the corrugated metal hose are connected by a fixed elbow, so that the adjustment of each direction according to the specific size of the space and the corner loop is not possible, and the large flow rate of the fluid cannot be limited by adjusting the corrugated metal hose, so as to prevent the joint between the corrugated metal hose and the customer's pipeline from being loosened due to oscillation caused by the excessive flow rate of the fluid, and greatly limit the application range of the corrugated metal hose with the U-shaped structure.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a bellows to solve the not good application scope narrow problem that leads to U type structure bellows of velocity of flow regulation effect.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a corrugated pipe, includes first bellows, second bellows, plastic hose and connecting bend, first bellows, second bellows parallel arrangement just connect through plastic hose, first bellows and second bellows are swing joint with connecting bend, first bellows includes inner tube and outer tube, be formed with the clearance between inner tube and the outer tube, connecting bend is equipped with the pipe fitting joint with the position that first bellows is connected, the appearance that the pipe fitting connects is the echelonment, the small circle terminal surface that the pipe fitting connects supports and presses in the inner tube.

By adopting the technical scheme, the plastic hose is adopted to connect the bottoms of the first corrugated pipe and the second corrugated pipe, the first corrugated pipe and the second corrugated pipe can be made of metal, the plastic hose has stronger flexibility and can be used for stretching, turning over and the like in all directions, can adjust all directions according to the specific size of space, corner loop and the like, can limit the larger flow velocity of fluid by adjusting the plastic hose, enlarges the application range of the U-shaped structure corrugated pipe, the two ends of the inner pipe are pressed, the pressure at the two ends is born by the inner pipe, the outer pipe is still in a stretching state, because the restraint effect of outer tube inner wall still can not take place the crooked condition of unstability, first bellows comprises inner tube and outer tube moreover, and the formation in clearance receives the effort at the inner tube, leaves certain buffering space, can not cause the extrusion friction to the outer tube.

The utility model discloses further set up to: and reinforcing ribs are arranged between the inner pipe wall of the outer pipe and the outer pipe wall of the inner pipe.

By adopting the technical scheme, the use of materials is reduced, and the use strength can be ensured.

The utility model discloses further set up to: the plastic hose is made of polytetrafluoroethylene.

By adopting the technical scheme, the polytetrafluoroethylene material has the properties of high flexibility, corrosion resistance and the like.

The utility model discloses further set up to: the corrugated pipe is characterized in that an outer wall convex peak and an outer wall groove trough are formed on the circumference of the outer wall of the first corrugated pipe, the circumference formed by closing the first corrugated pipe is concentric with the circumference of the radial cross section of the first corrugated pipe, the inner wall of the first corrugated pipe forms a corresponding inner wall convex peak and a corresponding inner wall groove trough along the outer wall convex peak and the outer wall groove trough, and the cross sections of the inner wall convex peak and the inner wall groove trough are isosceles trapezoids.

Through adopting above-mentioned technical scheme, the cross-sectional shape of the protruding crest of inner wall and inner wall recess trough is isosceles trapezoid, makes the bellows have higher deformation sensitivity, when receiving the fierce striking of external force, thereby can be faster take place deformation protection inside not damaged.

The utility model discloses further set up to: and a metal wire is spirally wound in the first corrugated pipe along the axial direction of the first corrugated pipe.

Through adopting above-mentioned technical scheme, the wire that extends along first bellows axial spiral coil in the first bellows has improved the axial tension force of first bellows not enough, has reduced the fragility of first bellows, prevents first bellows bending deformation or fracture, extension body life-span.

The utility model discloses further set up to: and an anticorrosive flame-retardant layer is attached to the outer surface of the first corrugated pipe.

Through adopting above-mentioned technical scheme, anticorrosive flame retardant coating can effectively protect inside safety to anticorrosive flame retardant coating can also prevent that the bellows from being corroded.

The utility model discloses further set up to: the pipe fitting joint is provided with a mounting hole, and the pipe fitting joint is connected with a flow regulating pipeline with the diameter smaller than that of the inner pipe.

Through adopting above-mentioned technical scheme, the outer tube has the accent to flow the pipeline through pipe fitting joint connection, because the accent flows the pipeline and is less than the inner tube diameter for the size of velocity of flow can change, and the diameter of adjusting the pipeline of flowing of course also can set to be greater than the diameter of inner tube.

To sum up, the utility model discloses following beneficial effect has:

firstly, the plastic hose has strong flexibility, can be stretched, folded and adjusted in all directions, can be adjusted in all directions according to specific sizes of space, corner loops and the like, and can limit the large flow rate of fluid through adjustment of the plastic hose, so that the application range of the corrugated pipe with the U-shaped structure is expanded;

and the cross sections of the inner wall convex wave crests and the inner wall groove wave troughs are isosceles trapezoids, so that the corrugated pipe has higher deformation sensitivity, and when the corrugated pipe is violently impacted by external force, the corrugated pipe can be quickly deformed to protect the interior of the corrugated pipe from being damaged.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic structural view of the first bellows of FIG. 1;

fig. 3 is a schematic structural view of a pipe fitting joint connection.

In the figure: 1. a first bellows; 2. a plastic hose; 3. a second bellows; 4. connecting a bent pipe; 5. an anti-corrosion flame-retardant layer; 6. a pipe fitting joint; 7. an inner tube; 8. an outer tube.

Detailed Description

In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A corrugated pipe comprises a first corrugated pipe 1, a second corrugated pipe 3, a plastic hose 2 and a connecting bent pipe 4, wherein the plastic hose 2 is made of polytetrafluoroethylene, the first corrugated pipe 1 and the second corrugated pipe 3 are arranged in parallel and connected through the plastic hose 2, the first corrugated pipe 1 and the second corrugated pipe 3 are movably connected with the connecting bent pipe 4, an outer wall convex peak and an outer wall groove valley are formed on the outer wall circumference of the first corrugated pipe 1, the circumference formed by closing the first corrugated pipe 1 is concentric with the circumference of the radial cross section of the first corrugated pipe 1, an inner wall convex peak and an inner wall groove valley are formed on the inner wall of the first corrugated pipe 1 along the outer wall convex peak and the outer wall groove valley, the cross sections of the inner wall convex peak and the inner wall groove valley are isosceles trapezoid, so that the corrugated pipe has higher deformation sensitivity, when the corrugated pipe is violently impacted by external force, deformation can occur more quickly to protect the interior from damage; the wire has been coiled along 1 axial spirals of first bellows 1 in the first bellows 1, and it is not enough to have improved the axial tensile force of first bellows 1, has reduced the fragility of first bellows 1, prevents 1 bending deformation of first bellows or fracture, and the extension body life-span, the surface of first bellows 1 adheres to has anticorrosive flame retardant coating 5.

As shown in fig. 3, the first corrugated pipe 1 includes an inner pipe 7 and an outer pipe 8, a gap is formed between the inner pipe 7 and the outer pipe 8, a reinforcing rib is arranged between the inner pipe wall of the outer pipe 8 and the outer pipe wall of the inner pipe 7, the use of materials is reduced, and the use strength can be ensured, the pipe joint 6 is arranged at the position where the connecting elbow 4 is connected with the first corrugated pipe 1, the pipe joint 6 is in a step shape, the small circular end face of the pipe joint 6 abuts against the inner pipe 7, the two ends of the outer pipe 8 are provided with external threads, the pipe joint 6 is provided with internal threads matched with the external threads, the pipe joint 6 is provided with a mounting hole, the pipe joint 6 is connected with a flow regulating pipeline with a diameter smaller than the diameter of the inner pipe 7, because the flow regulating pipeline is smaller than the diameter of the inner pipe 7.

When the corrugated pipe is used, the plastic hose 2 is connected with the bottoms of the first corrugated pipe 1 and the second corrugated pipe 3, the first corrugated pipe 1 and the second corrugated pipe 3 can be made of metal, the plastic hose 2 is made of polytetrafluoroethylene and has the properties of high flexibility, corrosion resistance and the like, the corrugated pipe can be stretched, folded and the like in all directions, the adjustment of all directions can be carried out according to the specific size of space, corner loops and the like, the large flow rate of fluid can be limited by adjusting the plastic hose 2, the application range of the corrugated pipe with the U-shaped structure is expanded, the two ends of the inner pipe 7 are pressed, the pressure at the two ends is borne by the inner pipe 7, the outer pipe 8 is still in a stretching state, the unstable bending condition still cannot occur due to the constraint effect of the inner wall of the outer pipe 8, the first corrugated pipe 1 consists of the inner pipe 7 and the outer pipe 8, and gaps are, a certain buffer space is left, and the extrusion friction of the outer pipe 8 can not be caused.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a corrugated pipe, includes first bellows (1), second bellows (3), plastic hose (2) and connecting bend (4), first bellows (1), second bellows (3) parallel arrangement just connect through plastic hose (2), first bellows (1) and second bellows (3) are swing joint, its characterized in that with connecting bend (4): first bellows (1) include inner tube (7) and outer tube (8), be formed with the clearance between inner tube (7) and outer tube (8), the position that connecting bend (4) and first bellows (1) are connected is equipped with pipe fitting joint (6), the appearance of pipe fitting joint (6) is the echelonment, the small circle terminal surface of pipe fitting joint (6) supports presses in inner tube (7).

2. A bellows as claimed in claim 1, wherein: and reinforcing ribs are arranged between the inner pipe wall of the outer pipe (8) and the outer pipe wall of the inner pipe (7).

3. A bellows as claimed in claim 1, wherein: the plastic hose (2) is made of polytetrafluoroethylene.

4. A bellows as claimed in claim 1, wherein: the outer wall circumference of first bellows (1) is formed with outer wall protruding crest and outer wall groove trough, and the circumference that its closure formed is concentric with first bellows (1) radial cross section circumference, the inner wall of first bellows (1) forms corresponding inner wall protruding crest and inner wall groove trough along outer wall protruding crest and outer wall groove trough, the cross-sectional shape of inner wall protruding crest and inner wall groove trough is isosceles trapezoid.

5. A bellows according to claim 4, wherein: and a metal wire is spirally wound in the first corrugated pipe (1) along the axial direction of the first corrugated pipe (1).

6. A bellows according to claim 5, wherein: and an anticorrosive flame-retardant layer (5) is attached to the outer surface of the first corrugated pipe (1).

7. A bellows as claimed in claim 1, wherein: the pipe fitting is characterized in that external threads are arranged at two ends of the outer pipe (8), internal threads matched with the external threads are arranged on the pipe fitting joint (6), and mounting holes are formed in the pipe fitting joint (6).

8. A bellows according to claim 7, wherein: the pipe fitting joint (6) is connected with a flow regulating pipeline with the diameter smaller than that of the inner pipe (7).