CN211232032U - Sealing connection type corrugated pipe - Google Patents

Abstract

The utility model discloses a sealed connection type bellows, which comprises a bellows body, a connecting plug structure is fixed at one end of the bellows body, and a connecting socket structure is fixed at the other end of the bellows body. The plug body is provided with a threaded convex body on the outer wall of the plug body, a position-limiting convex ring is fixed at the tail of the plug body, and the surface of the plug body is covered with an electrothermal melting tape layer. There is an insertion cavity with the same shape as the insertion body, the inner wall of the insertion cavity is provided with a spiral groove matched with the threaded convex body, the outer wall of the insertion body is provided with a pressing ring groove, and the pressing ring groove is formed on the outer wall of the insertion body. A pressing ring body is arranged inside, and a pressing spring is arranged between the pressing ring body and the end wall of the pressing ring groove. The structural arrangement of the utility model is reasonable, which not only facilitates the installation and connection, but also ensures the sealing stability and sealing reliability of the connection part, is not prone to leakage, and has strong applicability and good practicability.

Description

Sealed connection type bellows

technical field

The utility model belongs to the technical field of bellows, in particular to a sealed connection type bellows.

Background technique

Due to the advantages of high ring stiffness, convenient connection and low cost, plastic steel belt spiral corrugated pipes are more and more

The ground is used as buried drainage and sewage pipes in the fields of municipal construction and so on. At present, the existing steel belt reinforced polyethylene spiral corrugated pipes are used in the following connection methods: hot melt extrusion welding connection, electric heat melting belt connection, heat shrinkable belt connection, clamp connection and so on. The disadvantage of these connection methods is that the interface is easy to leak and has poor reliability, which is easy to cause road collapse. In addition, the ring stiffness of the existing plastic steel belt spiral corrugated pipe is insufficient, and the pipe material may undergo excessive deformation or buckling instability failure, which cannot meet the requirements of deep buried construction of municipal pipelines.

Chinese Patent No. 201821076343.6 discloses HDPE steel belt reinforced spiral corrugated pipe, which is provided with a circle of electrothermal melting belt on the outer surface of the socket, and two electrodes are provided on the electrothermal melting belt. Although it can meet the needs of general use, it is beneficial to To prevent leakage at the connection, but its sealing effect is relatively limited, it is difficult to meet the needs of the market.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a sealed connection type bellows with reasonable structure and strong applicability.

The technical solution to achieve the purpose of the present invention is a sealed connection type bellows, including a bellows body, a connecting plug structure is fixed at one end of the bellows body, and a connection socket structure is fixed at the other end of the bellows body , the connecting plug structure includes a circular truncated plug body, a threaded convex body is opened on the outer wall of the plug body, a limiting convex ring is fixed at the tail of the plug body, and the surface of the plug body is covered with The electrothermal melting tape layer, the connection socket structure includes a base body, an insertion cavity with the same shape as the insertion body is opened inside the base body, and an inner wall of the insertion cavity is provided with a threaded protrusion to match The helical groove of the insert body is provided with a pressing ring groove on the outer wall of the insert body, and a pressing ring body is arranged in the pressing ring groove, and the pressing ring body and the abutting ring body are provided. A pressing spring is arranged between the end walls of the pressing ring groove, and the outer side of the pressing ring body protrudes from the outer side of the seat body under the action of the pressing spring. The side surface of the limiting convex ring is pressed against the outer side surface of the seat body and is compressed against the annular body to achieve sealing, and the conductive terminal connected to the electrothermal melting tape layer is fixed on the limiting convex ring .

The surface of the pressing ring body is covered with an electrothermal melting strip, and two electrodes connected to the electrothermal melting strip are fixed on the outer wall of the base body.

Reinforcing ribs are integrally formed on the corrugated convex sidewall of the corrugated pipe body.

The corrugated pipe body is a polyethylene material pipe body.

The utility model has positive effects: the structural arrangement of the utility model is reasonable, it is not only convenient for installation and connection, but also can ensure the sealing stability and sealing reliability of the connection, and is not prone to leakage, and has strong applicability and practicability it is good.

Description of drawings

In order to make the content of the present utility model easier to be understood clearly, the present utility model will be described in further detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

Figure 1 is a schematic structural diagram of the utility model.

Detailed ways

(Example 1)

FIG. 1 shows a specific embodiment of the present invention, wherein FIG. 1 is a schematic structural diagram of the present invention.

1, a sealed connection type bellows includes a bellows body 1, a connecting plug structure 2 is fixed at one end of the bellows body, and a connecting socket structure 3 is fixed at the other end of the bellows body, so The connecting plug structure 2 includes a circular truncated plug body 21, a threaded protrusion 22 is opened on the outer wall of the plug body, a limiting protrusion ring 23 is fixed at the tail of the plug body, and a surface of the plug body is wrapped Covered with an electrothermal melting tape layer 4, the connection socket structure 3 includes a seat body 31, an insertion cavity 32 having the same shape as the insertion body is opened inside the seat body, and an inner wall of the insertion cavity is opened with The helical groove 33 matched with the threaded protrusion is provided with a pressing ring groove 34 on the outer wall of the insert body, and a pressing ring body 35 is arranged in the pressing ring groove. A pressing spring 36 is arranged between the pressing ring body and the end wall of the pressing ring groove, and the outer side of the pressing ring body protrudes from the outer side of the seat under the action of the pressing spring. , when the adjacent bellows bodies are connected, the side surface of the limiting convex ring is pressed against the outer side surface of the seat body and compresses against the annular body to achieve sealing, and the limiting convex ring is fixed with all the The conductive terminals 37 connected to the electrothermal melting tape layers.

The surface of the pressing ring body is covered with an electrothermal melting strip body 5 , and two electrodes 6 connected to the electrothermal melting strip body are fixed on the outer wall of the base body. In this embodiment, during installation, the electrodes and the conductive terminals are energized, so that the electrothermal melting tape layer integrates the connecting plug structure and the connecting socket structure into one.

A reinforcing rib 7 is integrally formed on the sidewall of the corrugated protrusion of the corrugated pipe body.

The corrugated pipe body is a polyethylene material pipe body.

The structural arrangement of the utility model is reasonable, which not only facilitates the installation and connection, but also can ensure the sealing stability and sealing reliability of the connection part, is not prone to leakage, and has strong applicability and good practicability.

The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts according to the description and the drawings can also be processed without doubt according to the existing technical common sense. The connection method adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no detailed description is given here.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And these obvious changes or changes derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims (4)

1. A sealed connection type bellows, comprising a bellows body, characterized in that a connection plug structure is fixed at one end of the bellows body and a connection socket structure is fixed at the other end of the bellows body, the The connection plug structure includes a circular truncated plug body, a threaded convex body is opened on the outer wall of the plug body, a limiting convex ring is fixed at the tail of the plug body, and the surface of the plug body is covered with an electrothermal melting tape The connecting socket structure includes a socket body, an insertion cavity with the same shape as the socket body is opened inside the socket body, and a spiral concave matched with the threaded convex body is opened on the inner wall of the socket body. groove, a pressing ring groove is opened on the outer wall of the insert body, a pressing ring body is arranged in the pressing ring groove, and the pressing ring body and the pressing ring A pressing spring is arranged between the end walls of the groove, and the outer side of the pressing annular body protrudes from the outer side of the seat body under the action of the pressing spring. When the adjacent bellows bodies are connected, the limiting The side surface of the positioning convex ring is pressed against the outer side surface of the base body and is compressed against the annular body to achieve sealing, and the conductive terminal connected to the electrothermal melting tape layer is fixed on the limiting convex ring. 2 . The sealed connection type bellows according to claim 1 , characterized in that: the surface of the pressing ring body is covered with an electrothermal melting tape, and the outer wall of the seat body is fixed with the The two electrodes connected by the electrothermal melting belt. 3 . The sealed connection type bellows according to claim 2 , wherein a reinforcing rib is integrally formed on the sidewall of the corrugated protrusion of the bellows body. 4 . 4. The sealed connection type corrugated pipe according to claim 3, wherein the corrugated pipe body is a polyethylene material pipe body.

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