CN212377532U - Krah pipe connection electric smelting bellmouth - Google Patents

Abstract

A carat pipe coupling electric smelting bellmouth includes: the tubular product bellmouth, its characterized in that: a circle of bulb-shaped electric heating wire capable of increasing the width of the electric heating wire to be fused is embedded in the surface of the inner wall of the socket of the pipe. The utility model discloses behind the carat pipe coupling electric smelting bellmouth adopted bulb shape heating wire, increase heating wire line melting width and calorific capacity, bulb shape heating wire after the circular telegram forms two rings of sealing lines of transversely crisscross coincidence at tubular product socket and tubular product bellmouth grafting position, and the zone of heating melting area grow can make tubular product bellmouth and tubular product socket grafting position surface PE material weld completely integrative. Not only improves the reliability of the sealing connection of the pipe, avoids the water leakage problem at the welding joint of the carat pipe bell and spigot, but also greatly improves the connection strength of the pipe.

Description

Krah pipe connection electric smelting bellmouth

Technical Field

The utility model relates to a carat pipe piping connection accessory, especially a carat pipe piping connection electric smelting bellmouth.

Background

A Kela pipe, named HDPE winding structure wall B-type pipe, is a high-density polyethylene winding increasing pipe produced by using high-density polyethylene resin (HDPE) as a main raw material, adopting a hot-state winding forming process, using a PP or PE corrugated pipe as an auxiliary supporting pipe and adopting a hot-winding forming process.

At present, the HDPE winding pipe structure wall B type pipe pipeline is mainly connected by socket type electric melting connection, the electric melting connection is that electric heating wires are embedded in a socket, and after a socket is inserted into the socket, the socket and the surface PE material of the socket are fused together through current, so that the sealing connection effect is achieved. An existing krah pipe connecting electric melting bell socket is shown in fig. 1, an electric heating wire 2 pre-embedded in the inner wall surface 11 of a pipe bell socket 1 is usually a wave-shaped electric heating wire, and the wave-shaped electric heating wire needs to be well matched with the size of a socket of the krah pipe because the wire of the wave-shaped electric heating wire is narrow in melting width. However, the PE material is a crystalline material, the material shrinkage is large, the socket and the spigot are easy to shrink or deform, when the pipe is welded by electrifying heating, the transverse staggered overlapped sealing line of the socket and the surface PE material of the socket is 1 circle, and the heating quantity of the heating wire pre-embedded in the pipe socket can not enable the socket and the surface PE material of the socket to be completely welded into a whole, so that water leakage is easy to cause, and the welding quality is not guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that compensate above-mentioned prior art's defect, provide one kind and can prevent better that the hot melt welding is bad and the carat pipe coupling electric smelting bellmouth of leakage problem appears.

The technical problem of the utility model is solved through following technical scheme:

this kind of carat pipe coupling electric smelting bellmouth includes: a pipe bell mouth.

The carat pipe pipeline connection electric melting socket is characterized in that:

a circle of bulb-shaped electric heating wire capable of increasing the electric heating wire line to the melting width is embedded in the surface of the inner wall of the socket of the pipe.

The technical problem of the utility model is further solved through following technical scheme.

The bulb-shaped electric heating wire is formed by adding an annular electric heating wire at each wave crest or wave tip of the wavy electric heating wire.

Compared with the prior art, the utility model beneficial effect be:

the utility model discloses behind the carat pipe coupling electric smelting bellmouth adopted bulb shape heating wire, increase heating wire line melting width and calorific capacity, bulb shape heating wire after the circular telegram forms two rings of sealing lines of transversely crisscross coincidence at tubular product socket and tubular product bellmouth grafting position, and the zone of heating melting area grow can make tubular product bellmouth and tubular product socket grafting position surface PE material weld completely integrative. Not only improves the reliability of the sealing connection of the pipe, avoids the water leakage problem at the welding joint of the carat pipe bell and spigot, but also greatly improves the connection strength of the pipe.

Drawings

FIG. 1 is a schematic structural view of an existing Krah pipe connection electrofusion socket;

fig. 2 is a schematic structural view of the carat pipe connecting electric melting socket of the present invention.

Detailed Description

Example (b): as clearly seen from FIG. 2, the Krah pipe connection electric melting socket of the present invention comprises a pipe socket 1 and a heating wire 2 buried in the inner wall surface 11 of the pipe socket 1 for a circle.

The heating wire 2 is a bulb-shaped heating wire, that is, it is composed of a wave-shaped electrothermal fuse 21 and a ring-shaped heating wire 22 connected to each wave crest portion thereof.

When the Krah pipe pipeline connecting electric melting socket is actually used, the electric heating wire in the shape of a bulb embedded on the surface of the inner wall of the pipe socket increases the linear melting width and the heat productivity, so that two circles of sealing lines which are transversely staggered and overlapped are formed at the socket and the socket inserting part of the pipe socket, the melting area of a heating area is increased, the defects that a PE material belongs to a crystalline material, the material shrinkage is large, the socket and the socket of the pipe are easy to shrink or deform, the electric melting connection is affected are overcome, and the PE material on the surface of the socket inserting part of the pipe and the socket of the pipe can be completely welded into a whole. Not only improves the reliability of the sealing connection of the pipe, avoids the water leakage problem at the welding joint of the carat pipe bell and spigot, but also greatly improves the connection strength of the pipe.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments disclosed herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.

Claims (2)

1. A carat pipe coupling electric smelting bellmouth includes: the tubular product bellmouth, its characterized in that:

a circle of bulb-shaped electric heating wire capable of increasing the electric heating wire line to the melting width is embedded in the surface of the inner wall of the socket of the pipe.

2. An electrofusion socket for pipe connection of carat pipe as defined in claim 1, characterised in that:

the bulb-shaped electric heating wire is formed by adding an annular electric heating wire at each wave crest or wave tip of the wavy electric heating wire.

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