CN218992700U

CN218992700U - Non-welding corrugated pipe

Info

Publication number: CN218992700U
Application number: CN202223525443.1U
Authority: CN
Inventors: 傅延超; 孟亚军; 程燕
Original assignee: Wuhu Taihe Pipe Industry Co ltd
Current assignee: Wuhu Taihe Pipe Industry Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-09
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a non-welding corrugated pipe, and belongs to the field of corrugated pipes. The utility model discloses an annular welding type corrugated pipe, which comprises a corrugated pipe, wherein an integrated flange steel sleeve is arranged at the outer end part of the corrugated pipe, a circle of annular caulking grooves are formed in the periphery of the integrated flange steel sleeve, a punching nut is further arranged at the outer end part of the corrugated pipe, the punching nut adopts a necking nut, and the necking end of the necking nut is correspondingly matched and embedded into the annular caulking grooves. The utility model can further improve the connection tightness of the corrugated pipe joint, enhance the use safety, has simple integral structure, is easy to operate, has lower production cost and is convenient for mass popularization and application.

Description

Non-welding corrugated pipe

Technical Field

The utility model relates to the technical field of corrugated pipes, in particular to a non-welding corrugated pipe.

Background

The corrugated pipe has a wider application range in the engineering application field, the sealing performance of the corrugated pipe is required to be strict in the use process, the design safety of the pipe body is enhanced for the gas corrugated pipe, the gas leakage is effectively avoided, the application convenience and the use safety are important points in the industry especially for the corrugated pipe joint area, and the new design of the corrugated pipe joint area is also endless. Searched, for example, application No. 2020216071737 discloses a flanged bellows joint comprising a bellows and a connection structure; the number of the corrugated pipes is two, the right flange ring is welded at the left end of the right corrugated pipe, the left flange ring is welded at the right end of the left corrugated pipe, arc clamping plates are respectively and slidably connected in sliding grooves which are symmetrically arranged in front of and behind the outer sides of the right flange ring and the left flange ring, lock catches and lock rings are respectively arranged at the two ends of the outer cambered surface of each arc clamping plate, inserted posts which are rotationally connected with the inner side surfaces of the lock catches correspond to the positions of the lock rings at the outer cambered surface ends of the adjacent arc clamping plates, and clamping platforms of the inner cambered walls of the arc clamping plates are clamped with the corresponding corrugated grooves at the inner side ends of the outer cambered surfaces of the corresponding corrugated pipes; the flange type corrugated pipe joint can comprehensively ensure the tightness and firmness of the connecting part of the corrugated pipe.

As another application No. 2019105940942 discloses a spiral corrugated pipe joint and an assembly method thereof, the spiral corrugated pipe joint comprises a joint body, wherein the inner diameter of an access section of the joint body is larger than that of a body section, the access section at least comprises a taper section or an arc section, a sealing ring is embedded in the taper section or the arc section, the outer end face of the sealing ring is matched and attached with the inner end face of a pressing basket, and the outer end face of the pressing basket is connected with a clamping device. And sleeving the clamping device, the pressing basket and the sealing ring on the spiral corrugated pipe, plugging the spiral corrugated pipe into the connector body, and finally completing assembly by adjusting the clamping device. The design can ensure the connection strength of the spiral corrugated pipe and realize high-strength sealing. It can be seen that there have been many disclosures in the prior art regarding joint designs for corrugated pipes, but there is still room for improvement optimization that has not been addressed.

Disclosure of Invention

1. Technical problem to be solved by the utility model

Aiming at the situation that the tightness and application convenience of the existing corrugated pipe joint design still have further improvement space, the utility model aims to provide the endless welded corrugated pipe, which can further improve the connection tightness of the corrugated pipe joint, enhance the use safety, and has the advantages of simple integral structure, easy operation, lower production cost and convenient mass popularization and application.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses an annular welding type corrugated pipe, which comprises a corrugated pipe, wherein an integrated flange steel sleeve is arranged at the outer end part of the corrugated pipe, a circle of annular caulking grooves are formed in the periphery of the integrated flange steel sleeve, a punching nut is further arranged at the outer end part of the corrugated pipe, the punching nut adopts a necking nut, and the necking end of the necking nut is correspondingly matched and embedded into the annular caulking grooves.

Further, the corrugated pipe is coated with a coating layer along the outer side of the extending direction of the length, the integral flange steel sleeve is pressed on the outer side of the coating layer, and the extending length of the integral flange steel sleeve towards the outer end part of the corrugated pipe exceeds the extending length of the coating layer.

Furthermore, the outer side surface of the integral flange steel sleeve is kept flush with the outer side surface of the cladding layer.

Furthermore, the inner side of the integral flange steel sleeve is also provided with an annular clamping block which is correspondingly embedded into the external corrugated groove of the corrugated pipe.

Furthermore, two corrugations at the pipe orifice end of the corrugated pipe are processed by stamping, and the annular clamping blocks of the integral flange steel sleeve are correspondingly embedded into the corrugated grooves at the rear end of the stamping.

Still further, still include the shield, the at least part of shield inwards extends and imbeds in the punching press nut to with the screw-thread fit connection between the punching press nut inner wall.

Still further still include the packing ring, the packing ring sets up in the punching press nut inboard, and closely laminate with bellows outer end.

Further, the washer is in interference fit with the inner wall of the ram nut.

Furthermore, the outer end face of the integral flange steel sleeve is kept flush with the outer end face of the corrugated pipe, and the gasket is tightly attached to the integral flange steel sleeve and the corrugated pipe.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) According to the annular welding-free corrugated pipe, the corresponding integral flange steel sleeve is designed, the flange and the steel sleeve are combined into the integral piece, the root bending performance of the corrugated pipe is improved, the condition that the pipe body is exposed when the root is bent is avoided, and therefore the connection tightness of the corrugated pipe joint is further improved, and the use safety is improved.

(2) The non-welding corrugated pipe adopts the necking nut structure, the integral flange steel sleeve and the corrugated pipe are assembled, then the necking nut and the integral flange steel sleeve are assembled, the necking nut cannot move along the pipe body, and the necking nut can be matched with a larger-caliber corrugated pipe, so that the application range is wider.

Drawings

Fig. 1 is a schematic structural view of a solderless corrugated pipe of the present utility model.

Reference numerals in the schematic drawings illustrate:

1. a dust cover; 2. stamping a nut; 3. a gasket; 4. an integral flange steel sleeve; 5. a bellows; 6. and a coating layer.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model is further described below with reference to examples.

Example 1

As shown in fig. 1, the solderless corrugated pipe of this embodiment includes a corrugated pipe 5, a cladding layer 6 is coated on the outer side of the corrugated pipe 5 along the length extending direction, an integral flange steel sleeve 4 is further provided on the outer end of the corrugated pipe 5, a ring-shaped caulking groove is provided on the outer periphery of the integral flange steel sleeve 4, a punching nut 2 is further provided on the outer end of the corrugated pipe 5, the punching nut 2 is a necking nut, and the necking end of the necking nut is correspondingly matched and embedded into the ring-shaped caulking groove. The integral flange steel sleeve 4 is pressed and covered on the outer side of the coating layer 6, and the extension length of the integral flange steel sleeve 4 towards the outer end part of the corrugated pipe 5 exceeds the extension length of the coating layer 6, and the outer side surface of the integral flange steel sleeve 4 is kept flush with the outer side surface of the coating layer 6.

It should be noted that, in the traditional corrugated pipe joint structure, the flange structure is generally welded with the corrugated pipe directly, the corrugated pipe is inevitably exposed between the cladding layers, in order to avoid the cladding layer nuts, the corrugated pipe is further protected by adopting a steel sleeve structure in the industry generally, so as to prevent oil dirt and dust from entering the corrugated pipe, namely, the end part of the flange structure is additionally provided with the steel sleeve structure, split type design is adopted between the flange structure and the steel sleeve structure, and in practice, when the root part of the corrugated pipe is bent, the corrugated pipe body area still is exposed, and the corrosion risk is easily increased.

Aiming at the situation, the flange structure and the steel sleeve structure are creatively designed into an integral structure, the corresponding integral flange steel sleeve 4 is designed, the flange and the steel sleeve are combined into an integral piece, the root bending performance of the corrugated pipe is further improved, and the condition that the pipe body is exposed when the root is bent is avoided; in addition, the corresponding cooperation punching nut 2 adopts the necking nut structure, firstly the integral flange steel sleeve 4 is assembled with the corrugated pipe 5, then the necking nut is assembled with the integral flange steel sleeve 4, the necking nut can not move along the pipe body, the problem that the tail diameter of the necking nut is equal to the small diameter of the screw thread when the sizes of some pipe bodies are consistent with those of the flange in practice is solved, the necking nut of the embodiment can specifically adopt a G1/2 screw thread interface, can be matched with a larger-caliber corrugated pipe, and has wider application range and more flexible installation.

In this embodiment, an annular clamping block is further disposed on the inner side of the integral flange steel sleeve 4, and the annular clamping block is correspondingly embedded into the external corrugated groove of the corrugated pipe 5. Specifically, the first two outwards protruding waves at the pipe orifice end of the corrugated pipe 5 are processed through punching, so that the outer end face of the integrated flange steel sleeve 4 can be kept flush with the outer end face of the corrugated pipe 5, and the annular clamping blocks of the integrated flange steel sleeve 4 are correspondingly embedded into the corrugated grooves at the rear end of the punching. In the embodiment, the pipe orifice part is processed by punching, the whole product has only one longitudinal welding line, and two circumferential welding lines are reduced, so that the leakage risk of the product is greatly reduced, and under normal conditions, the common welding line is easier to leak.

The embodiment also comprises a dust cover 1 and a gasket 3, wherein at least part of the dust cover 1 extends inwards to be embedded into the punching nut 2 and is in threaded fit connection with the inner wall of the punching nut 2. The gasket 3 is arranged on the inner side of the punching nut 2, the gasket 3 is in interference fit with the inner wall of the punching nut 2, the gasket 3 and the punching nut 2 are matched stably and do not shake, and the gasket 3 is tightly attached to the outer end part of the corrugated pipe 5 and the outer end part of the integral flange steel sleeve 4.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. The utility model provides a no welding formula bellows which characterized in that: the corrugated pipe comprises a corrugated pipe (5), wherein an integrated flange steel sleeve (4) is arranged at the outer end part of the corrugated pipe (5), a circle of annular caulking groove is formed in the periphery of the integrated flange steel sleeve (4), a punching nut (2) is further arranged at the outer end part of the corrugated pipe (5), a necking nut is adopted by the punching nut (2), and the necking end of the necking nut is correspondingly matched and embedded into the annular caulking groove.

2. A solderless corrugated pipe according to claim 1, characterized in that: the outside cladding of bellows (5) along length extension direction has coating (6), and integral type flange steel bushing (4) press-cover is in coating (6) outside, and the length that integral type flange steel bushing (4) extended towards bellows (5) outer tip surpasses the extension length of coating (6).

3. A solderless corrugated pipe according to claim 2, characterized in that: the outer side surface of the integral flange steel sleeve (4) is kept flush with the outer side surface of the cladding layer (6).

4. A solderless corrugated pipe according to claim 2, characterized in that: the inner side of the integral flange steel sleeve (4) is also provided with an annular clamping block which is correspondingly embedded into an external corrugated groove of the corrugated pipe (5).

5. A solderless corrugated pipe according to claim 4, wherein: two corrugations at the pipe orifice end of the corrugated pipe (5) are processed by stamping, and annular clamping blocks of the integrated flange steel sleeve (4) are correspondingly embedded into corrugated grooves at the rear end of the stamping.

6. A solderless corrugated pipe according to claim 1, characterized in that: the anti-dust device further comprises a dust cover (1), at least part of the dust cover (1) extends inwards to be embedded into the punching nut (2) and is connected with the inner wall of the punching nut (2) in a threaded fit mode.

7. A solderless corrugated pipe according to claim 1, characterized in that: the corrugated pipe is characterized by further comprising a gasket (3), wherein the gasket (3) is arranged on the inner side of the stamping nut (2) and is tightly attached to the outer end part of the corrugated pipe (5).

8. A solderless corrugated pipe according to claim 7, wherein: the gasket (3) is in interference fit with the inner wall of the punching nut (2).

9. A solderless corrugated pipe according to claim 5, wherein: the outer end face of the integral flange steel sleeve (4) is kept flush with the outer end face of the corrugated pipe (5), and the gasket (3) is tightly attached to the integral flange steel sleeve (4) and the corrugated pipe (5).