Connecting and sealing structure for metal corrugated pipe

Abstract

The connecting and sealing structure for the metal corrugated pipes comprises the corrugated pipes, reinforcing plates and bolts, the free ends of the adjacent corrugated pipes are folded and stretched outwards to form connecting edges, connecting holes are formed in the middles of the connecting edges, through holes opposite to the connecting holes are formed in the reinforcing plates, and sealing blocking pieces are arranged on blocking edges on the two sides of the reinforcing plates. The adjacent connecting edges are oppositely arranged and penetrate through the through holes and the connecting holes through bolts to be locked, sealing cavities are formed by the connecting edges, the reinforcing plates and the sealing blocking pieces, and the sealing cavities are filled with sealant. The free ends of the corrugated pipes are outwards folded and stretched to form the connecting edges, the connecting edges of the adjacent corrugated pipes are oppositely arranged and combined with the design of the sealing blocking pieces and the reinforcing plates to form the sealing cavity, the adjacent corrugated pipes can be connected through the design of the through holes and the connecting holes in the reinforcing plates, and under the action of the sealant, the sealing effect is greatly improved. The sealing performance of the connecting position of the metal corrugated pipe can be effectively improved, and the service life of the metal corrugated pipe culvert is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metal corrugated pipe splicing technology, and more specifically, to a connecting and sealing structure for metal corrugated pipes. Background Technology

[0002] The existing method of connecting metal corrugated pipes is generally to use bolt connections, which brings two problems.

[0003] First, using bolts for connection results in an unstable connection that is easily affected by external factors such as humid environments or rain. Furthermore, the galvanized layer at the bolt installation location is easily damaged and corroded, affecting the stability of the connection.

[0004] Secondly, the conventional sealing method in the market is to install rubber sealing strips at the pipe connection between the flanges. Generally, metal bellows have a long service life, and the sealing effect of rubber sealing strips will deteriorate over time.

[0005] To address the aforementioned issues, Chinese patent CN106195482B provides a flange connection assembly suitable for metal bellows. By combining flange connection assembly with welding processes, it can effectively improve the sealing effect and extend its service life. However, it requires on-site welding, making the process relatively complex and non-removable.

[0006] Therefore, it is necessary to propose a connecting and sealing structure for metal bellows to solve the above-mentioned technical problems. Utility Model Content

[0007] This utility model provides a connection and sealing structure for metal bellows to solve the problems of complex process, poor sealing at the connection, and short duration of continuous sealing effect in existing metal bellows connection structures.

[0008] According to one aspect of the present invention, a connecting sealing structure for a metal corrugated pipe is provided, comprising a corrugated pipe, a reinforcing plate, and bolts. The free ends of adjacent corrugated pipes are folded and stretched outward to form a connecting edge. A connecting hole is provided in the middle of the connecting edge. A through hole is provided on the reinforcing plate opposite to the connecting hole. Sealing stops are provided on the flanges on both sides of the reinforcing plate. Adjacent connecting edges are arranged opposite to each other and are locked by bolts passing through the through hole and the connecting hole. The connecting edge, the reinforcing plate, and the sealing stops form a sealing cavity, which is filled with sealant.

[0009] Based on the above scheme, preferably, the connecting edge corresponding to the connecting hole protrudes outward to form an annular reinforcing edge, and the reinforcing edge is coaxially arranged with the connecting hole.

[0010] Based on the above scheme, preferably, the free end of the bellows is provided with a plug that is adapted to the sealing cavity.

[0011] Based on the above scheme, preferably, the sealing baffle and the reinforcing plate are iron plates.

[0012] Preferably, based on the above scheme, the reinforcing plate is welded to the connecting edge, and the sealing baffle is welded to the connecting edge on the other side of the adjacent bellows.

[0013] Based on the above scheme, the preferred embodiment is that the corrugated pipe includes multiple arc-shaped corrugated plates, which are spliced ​​together to form a ring structure.

[0014] This utility model discloses a connecting and sealing structure for metal bellows. The free end of the bellows is folded and stretched outward to form a connecting edge. The connecting edges of adjacent bellows are arranged opposite each other. Combined with the design of sealing baffles and reinforcing plates, a sealing cavity is formed. The connection between adjacent bellows can be achieved through the through holes and connecting holes on the reinforcing plate. With the help of sealant, the sealing performance of the metal bellows connection position can be effectively improved, and the service life of the metal bellows culvert can be extended. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a schematic diagram of the connecting and sealing structure for metal bellows according to this utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged view of part A;

[0018] Figure 3 For the present utility model Figure 2 Internal structure diagram;

[0019] Figure 4 This is a three-dimensional structural diagram of the connecting and sealing structure for metal bellows of this utility model;

[0020] Explanation of icon numbers:

[0021] 1. Corrugated pipe; 11. Connecting edge; 12. Connecting hole; 2. Reinforcing plate; 21. Through hole; 22. Bolt; 3. Sealing stop; 31. Reinforcing edge; 32. Sealing cavity; 4. Sealant. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0024] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0025] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0029] Please see Figure 1 and combined Figure 2 and Figure 3As shown, the present invention provides a connecting and sealing structure for metal corrugated pipes, including a corrugated pipe 1, a reinforcing plate 2, and bolts 22. The free ends of adjacent corrugated pipes 1 are folded and stretched outward to form a connecting edge 11. A connecting hole 12 is provided in the middle of the connecting edge 11. When adjacent corrugated pipes 1 need to be spliced, the connecting edges 11 of the two corrugated pipes 1 to be spliced ​​are arranged opposite each other so that the connecting holes 12 on them are coaxial.

[0030] The reinforcing plate 2 of this utility model is provided with a through hole 21 opposite to the connecting hole 12. The flanges on both sides of the reinforcing plate 2 are provided with sealing baffles 3 that are provided with the reinforcing plate 2. The adjacent connecting edges 11 are arranged opposite to each other and are secured by bolts 22 through the through hole 21 and the connecting hole 12 and by nuts. The connecting edges 11, the reinforcing plate 2 and the sealing baffles 3 form a sealing cavity 32, which is filled with sealant 4.

[0031] Compared with the prior art, the spliced ​​metal corrugated pipe 1 of this utility model is composed of multiple metal corrugated pipes 1 joined together to form a corrugated pipe culvert 1. The axial direction of the corrugated pipe culvert 1 is integrally rolled from the corrugated plate to form a flanged connecting edge 11. The outer sealing baffle 3 and the inner sealing baffle 3 are respectively fixed to the connecting edge 11 of the corrugated pipe 1 culvert on one side by countersunk bolts 22 or welding. The reinforcing plate 2 is also fixed to the flanged connecting edge 11 of the corresponding contacting corrugated pipe 1 culvert by countersunk bolts 22 or welding. The two rings of corrugated pipe 1 culverts are fixed by bolts 22. Sealant 4 is injected into the pre-made hole of the outer sealing baffle 3. For the specific structure, please refer to [link to specific details]. Figure 4 As shown.

[0032] To improve the connection strength, this utility model has an annular reinforcing edge 31 protruding outward at the connecting edge 11 corresponding to the connecting hole 12, and the reinforcing edge 31 is coaxially arranged with the connecting hole 12.

[0033] Preferably, a plug adapted to the sealing cavity 32 is also provided at the free end of the bellows 1. The sealing baffle 3 and the reinforcing plate 2 are iron plates, wherein the reinforcing plate 31 is welded to the connecting edge, and the sealing baffle 3 is welded to the connecting edge 11 on the other side of the adjacent bellows. When two adjacent bellows are spliced, the connecting edges 11 of the two bellows are arranged opposite each other, so that the reinforcing plate 31 is located in the middle of the two sealing baffles 3.

[0034] It is worth noting that the corrugated pipe of this utility model includes multiple arc-shaped corrugated plates, which are spliced ​​together to form a ring structure.

[0035] This utility model discloses a connecting and sealing structure for metal bellows. The free end of the bellows 1 is folded and stretched outward to form a connecting edge 11. The connecting edges 11 of adjacent bellows 1 are arranged opposite each other. Combined with the design of the sealing baffle 3 and the reinforcing plate 2, a sealing cavity 32 is formed. The connection of adjacent bellows 1 can be realized through the through hole 21 and the connecting hole 12 on the reinforcing plate 2. Under the action of the sealant 4, the sealing performance of the connection position of the metal bellows 1 can be effectively improved, and the service life of the metal bellows 1 can be extended.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] (1) It can improve the sealing of the connection position of the metal bellows 1 and extend the service life of the metal bellows 1.

[0038] (2) The new sealing connection method has a long effective sealing time.

[0039] (3) Installation and construction are simple and quick, no welding is required, the process is simple and the construction efficiency is fast, which meets the characteristics of fast construction speed of steel corrugated pipe culvert.

[0040] (4) Improve the compressive strength of the metal corrugated pipe 1 connection and play the role of supporting the steel.

[0041] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A connecting and sealing structure for a metal bellows, characterized in that, The device includes a corrugated pipe, a reinforcing plate, and bolts. The free ends of adjacent corrugated pipes are folded and stretched outward to form a connecting edge. A connecting hole is provided in the middle of the connecting edge. A through hole is provided on the reinforcing plate opposite to the connecting hole. Sealing stops are provided on the flanges on both sides of the reinforcing plate. Adjacent connecting edges are arranged opposite each other and are locked by bolts passing through the through hole and the connecting hole. The connecting edge, the reinforcing plate, and the sealing stops form a sealing cavity, which is filled with sealant.

2. The connecting and sealing structure for a metal bellows as described in claim 1, characterized in that, The connecting edge corresponding to the connecting hole protrudes outward to form an annular reinforcing edge, and the reinforcing edge is coaxially arranged with the connecting hole.

3. The connecting and sealing structure for a metal bellows as described in claim 1, characterized in that, The free end of the bellows is provided with a plug that is adapted to the sealing cavity.

4. The connecting and sealing structure for a metal bellows as described in claim 1, characterized in that, The sealing baffle and the reinforcing plate are made of iron plates.

5. The connecting and sealing structure for a metal bellows as described in claim 1, characterized in that, The reinforcing plate is welded to the connecting edge, and the sealing baffle is welded to the connecting edge on the other side of the adjacent bellows.

6. The connecting and sealing structure for a metal bellows as described in claim 1, characterized in that, The corrugated pipe includes multiple arc-shaped corrugated plates, which are spliced ​​together to form a ring structure.

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