CN210336936U - Plastic conduit joint auxiliary device - Google Patents

Abstract

The utility model provides a plastic pipeline joint auxiliary device, which is assembled at the joint of an inner pipeline and an outer pipeline and comprises an inner diameter expanding structure and a linking transition structure, wherein the inner diameter expanding structure is positioned inside the inner pipeline and expands the inner wall of the inner pipeline; under the support of the inner diameter expanding structure, the inner layer pipeline cannot be compressed and deformed by the outer layer pipeline, so that the inner diameter of the inner layer pipeline is prevented from being reduced, and the influence on the fluid flowing process is reduced; the connection transition structure is positioned on the end surface of the inner-layer pipeline and is used for performing connection transition on the junction of the end surface of the inner-layer pipeline and the inner wall of the outer-layer pipeline; the junction of the inner pipeline end face and the inner wall of the outer pipeline is smoothly connected through a connecting transition structure, so that the influence on the fluid flowing process can be reduced, and the inner pipeline end face is prevented from being attached with impurities in the fluid.

Description

Plastic conduit joint auxiliary device

Technical Field

The utility model relates to a pipeline installation technique especially relates to a plastic conduit joint auxiliary device.

Background

The plastic pipe is produced by using plastic resin as material, adding stabilizer, lubricant, etc. and extruding in a pipe making machine. Because of its light weight, corrosion resistance, beautiful appearance, no bad smell, easy processing, convenient construction and other features, it has been used in building engineering more and more widely. The pipe is mainly used as a running water supply system pipe, a drainage, exhaust and pollution discharge sanitary pipe, an underground drainage pipe system, a rainwater pipe, a threading pipe for electric wire installation and assembly sleeve and the like of a house building. The plastic pipes include thermoplastic plastic pipes and thermosetting plastic pipes. The main resins adopted by the thermoplastic plastic pipe comprise polyvinyl chloride resin (PVC), polyethylene resin (PE), polypropylene resin (PP), polystyrene resin (PS), acrylonitrile-butadiene-styrene resin (ABS), polybutylene resin (PB) and the like; the main resins used in the thermosetting plastic include unsaturated polyester resin, epoxy resin, furan resin, phenolic resin and the like.

The common plastic pipes are generally connected in a socket joint mode after being heated and softened, the operation is quick and convenient, but some hidden troubles are left at the joints easily:

1. the outer layer pipeline has certain pressure on the inner layer pipeline during the insertion, the inner layer pipeline is easy to deform and reduce in inner diameter during the jointing operation, the inner wall of the inner layer pipeline is distorted into an irregular shape and is easy to attach impurities in fluid, and the outer wall of the inner layer pipeline is not tightly attached to the outer layer pipeline, so that leakage is easy to occur;

2. form the step between inlayer pipeline terminal surface and the outer pipeline inner wall, simultaneously because the general roughness of inlayer pipeline terminal surface is higher, the impurity in the junction adheres to the fluid easily, causes the impurity accumulation, makes the pipeline flow reduce, blocks up even.

Therefore, there is a need for a plastic pipe splicing aid that overcomes the above-mentioned deficiencies.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plastic conduit joint auxiliary device to in joining the pipeline, reduce the influence of junction to pipeline flow.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

a plastic pipeline joint auxiliary device is assembled at the joint of an inner pipeline and an outer pipeline and comprises an inner diameter expanding structure and a connection transition structure, wherein the inner diameter expanding structure is positioned inside the inner pipeline and used for expanding the inner wall of the inner pipeline; under the support of the inner diameter expanding structure, the inner layer pipeline cannot be compressed and deformed by the outer layer pipeline, so that the inner diameter of the inner layer pipeline is prevented from being reduced, and the influence on the fluid flowing process is reduced;

the connection transition structure is positioned on the end surface of the inner-layer pipeline and is used for performing connection transition on the junction of the end surface of the inner-layer pipeline and the inner wall of the outer-layer pipeline; the junction of the end surface of the inner layer pipeline and the inner wall of the outer layer pipeline is smoothly connected through a connecting transition structure, so that the influence on the fluid flowing process can be reduced, and the end surface of the inner layer pipeline is prevented from being attached with impurities in the fluid;

in particular, the amount of the solvent to be used,

the inner diameter expanding structure comprises a rigid pipe column body, the rigid pipe column body is positioned in the inner layer pipeline, the size of the rigid pipe column body is matched with that of the inner layer pipeline, and the outer wall of the rigid pipe column body is attached to the inner wall of the plastic pipeline;

the linking transition structure comprises an annular edge, the annular edge is positioned at the outer end of the rigid pipe column body, is curled towards the outer side of the rigid pipe column body and covers the outer side of the end face of the inner layer pipeline;

the ring edge is used for limiting the position of the rigid pipe column body in the inner-layer pipeline while performing connection transition on the junction of the end surface of the inner-layer pipeline and the inner wall of the outer-layer pipeline, so that the rigid pipe column body is prevented from moving to the deep part of the inner-layer pipeline;

further, in the present invention,

the rigid pipe column body and the annular edge are integrally formed by adopting a stainless steel pipe, the stainless steel material has higher strength, can better support an inner layer pipeline, avoids deformation, has good chemical stability, is not easy to corrode and has long service life;

the joint of the annular edge and the outer end of the rigid pipe column body is arc-shaped, so that the inner flow channel of the outer layer pipeline and the inner layer pipeline is smoothly jointed;

the rigid pipe column body and the inner wall of the annular edge are polishing surfaces, and the flow resistance of the fluid can be further reduced by polishing the rigid pipe column body and the inner wall of the annular edge;

in one embodiment of the present invention, the first and second,

the outer diameter of the rigid pipe column body is 14.2mm, the inner diameter of the rigid pipe column body is 12.6mm, the outer diameter of the annular edge is 16mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm;

in another embodiment of the present invention, the first and second,

the outer diameter of the rigid pipe column body is 18.2mm, the inner diameter of the rigid pipe column body is 16.6mm, the outer diameter of the annular edge is 20mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm.

The utility model has the advantages that:

1. the plastic pipeline joint auxiliary device adopts the rigid pipe column body to expand the inner wall of the inner pipeline, and the inner pipeline cannot be compressed and deformed by the outer pipeline under the support of the rigid pipe column body, so that the inner diameter of the inner pipeline is prevented from being reduced, and the influence on the fluid flowing process is reduced;

2. the joint of the end face of the inner-layer pipeline and the inner wall of the outer-layer pipeline is connected and transited by adopting the annular edge, and the joint of the end face of the inner-layer pipeline and the inner wall of the outer-layer pipeline is smoothly connected by the annular edge, so that the influence on the fluid flowing process is reduced, and the end face of the inner-layer pipeline is prevented from being attached with impurities in the fluid;

3. the rigid pipe column body and the annular edge are integrally formed by adopting a stainless steel pipe, the stainless steel material has higher strength, can better support an inner layer pipeline, avoids deformation, has good chemical stability, is not easy to corrode and has long service life; the joint of the annular edge and the outer end of the rigid pipe column body is arc-shaped, so that the inner flow channel of the outer layer pipeline and the inner layer pipeline is smoothly jointed; the flow resistance of the fluid can be further reduced by polishing the rigid pipe column body and the inner wall of the annular edge.

Drawings

FIG. 1 is a schematic structural view of a plastic pipe joint auxiliary device according to the present invention;

FIG. 2 is a top view of one of the embodiments;

FIG. 3 is a cross-sectional view of one of the embodiments;

FIG. 4 is a top view of a second embodiment;

fig. 5 is a cross-sectional view of a second embodiment.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 5, the auxiliary device for plastic pipe joint provided by the present invention is assembled at the joint of the inner pipe and the outer pipe, and includes an inner diameter expanding structure and a connecting transition structure, wherein the inner diameter expanding structure is located inside the inner pipe to expand the inner wall of the inner pipe; under the support of the inner diameter expanding structure, the inner layer pipeline cannot be compressed and deformed by the outer layer pipeline, so that the inner diameter of the inner layer pipeline is prevented from being reduced, and the influence on the fluid flowing process is reduced; the connection transition structure is positioned on the end surface of the inner-layer pipeline and is used for performing connection transition on the junction of the end surface of the inner-layer pipeline and the inner wall of the outer-layer pipeline; the junction of the end surface of the inner layer pipeline and the inner wall of the outer layer pipeline is smoothly connected through a connecting transition structure, so that the influence on the fluid flowing process can be reduced, and the end surface of the inner layer pipeline is prevented from being attached with impurities in the fluid; specifically, the inner diameter expanding structure comprises a rigid pipe column body 1, the rigid pipe column body is positioned in the inner layer pipeline, the size of the rigid pipe column body is matched with that of the inner layer pipeline, and the outer wall of the rigid pipe column body is attached to the inner wall of the plastic pipeline; the linking transition structure comprises an annular edge 2, the annular edge is positioned at the outer end of the rigid pipe column body, is curled towards the outer side of the rigid pipe column body, and is covered on the outer side of the end face of the inner layer pipeline; the ring edge is used for limiting the position of the rigid pipe column body in the inner-layer pipeline while performing connection transition on the junction of the end surface of the inner-layer pipeline and the inner wall of the outer-layer pipeline, so that the rigid pipe column body is prevented from moving to the deep part of the inner-layer pipeline; the rigid pipe column body and the annular edge are integrally formed by adopting a stainless steel pipe, the stainless steel material has higher strength, can better support an inner layer pipeline, avoids deformation, has good chemical stability, is not easy to corrode and has long service life; the joint of the annular edge and the outer end of the rigid pipe column body is an arc-shaped switching section 3, so that the inner flow channel of the outer layer pipeline and the inner layer pipeline is smoothly jointed; the rigid pipe column body and the inner wall of the annular edge are polishing surfaces, and the flow resistance of the fluid can be further reduced by polishing the rigid pipe column body and the inner wall of the annular edge.

Example 1: as shown in figures 2 and 3 of the drawings,

the outer diameter of the rigid pipe column body is 14.2mm, the inner diameter of the rigid pipe column body is 12.6mm, the outer diameter of the annular edge is 16mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm;

example 2: as shown in figures 4 and 5 of the drawings,

the outer diameter of the rigid pipe column body is 18.2mm, the inner diameter of the rigid pipe column body is 16.6mm, the outer diameter of the annular edge is 20mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm.

The stainless steel used for the rigid pipe column body and the annular edge is specifically 304 stainless steel, which has the following advantages: environmental protection and sanitation: the problems of red water, blue-green water and hidden danger water are solved, no peculiar smell exists, no harmful substance is separated out, the separation amount of metal elements is lower than 5 percent of the standard value specified by WHO and European drinking water law, the water quality is kept pure, and the water is harmless to human health; wear resistance: the surface is beautiful, clean, bright, durable, free of scratches, rust and fracture; low temp. resistance, slow expansion and contraction, and good thermal insulating performance.

The plastic pipeline joint auxiliary device adopts the rigid pipe column body to expand the inner wall of the inner pipeline, and the inner pipeline cannot be compressed and deformed by the outer pipeline under the support of the rigid pipe column body, so that the inner diameter of the inner pipeline is prevented from being reduced, and the influence on the fluid flowing process is reduced; the joint of the end face of the inner-layer pipeline and the inner wall of the outer-layer pipeline is connected and transited by adopting the annular edge, and the joint of the end face of the inner-layer pipeline and the inner wall of the outer-layer pipeline is smoothly connected by the annular edge, so that the influence on the fluid flowing process is reduced, and the end face of the inner-layer pipeline is prevented from being attached with impurities in the fluid; the rigid pipe column body and the annular edge are integrally formed by adopting a stainless steel pipe, the stainless steel material has higher strength, can better support an inner layer pipeline, avoids deformation, has good chemical stability, is not easy to corrode and has long service life; the joint of the annular edge and the outer end of the rigid pipe column body is arc-shaped, so that the inner flow channel of the outer layer pipeline and the inner layer pipeline is smoothly jointed; the flow resistance of the fluid can be further reduced by polishing the rigid pipe column body and the inner wall of the annular edge.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to let the technical personnel in the field understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (7)

1. A plastic pipe joint auxiliary device is assembled at the joint of an inner pipe and an outer pipe, and is characterized in that:

the inner diameter expanding structure is positioned in the inner layer pipeline and used for expanding the inner wall of the inner layer pipeline;

the linking transition structure is positioned on the end surface of the inner layer pipeline and is used for linking and transitioning the junction of the end surface of the inner layer pipeline and the inner wall of the outer layer pipeline.

2. A plastic pipe engagement aid as claimed in claim 1, wherein:

the inner diameter expanding structure comprises a rigid pipe column body, the rigid pipe column body is positioned in the inner layer pipeline, the size of the rigid pipe column body is matched with that of the inner layer pipeline, and the outer wall of the rigid pipe column body is attached to the inner wall of the plastic pipeline;

the connection transition structure comprises an annular edge, wherein the annular edge is positioned at the outer end of the rigid pipe column body and is curled towards the outer side of the rigid pipe column body, and the outer side of the end face of the inner layer pipeline is covered and protected.

3. A plastic pipe engagement aid as claimed in claim 2, wherein:

the rigid pipe column body and the annular edge are integrally formed by adopting a stainless steel pipe.

4. A plastic pipe engagement aid as claimed in claim 2, wherein:

the joint of the ring edge and the outer end of the rigid pipe column body is an arc-shaped switching section.

5. A plastic pipe engagement aid as claimed in claim 2, wherein:

the rigid pipe column and the inner wall of the ring edge are polished surfaces.

6. A plastic pipe engagement aid as claimed in claim 2, wherein:

the outer diameter of the rigid pipe column body is 14.2mm, the inner diameter of the rigid pipe column body is 12.6mm, the outer diameter of the annular edge is 16mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm.

7. A plastic pipe engagement aid as claimed in claim 2, wherein:

the outer diameter of the rigid pipe column body is 18.2mm, the inner diameter of the rigid pipe column body is 16.6mm, the outer diameter of the annular edge is 20mm, the outer arc radius of the arc-shaped switching section at the joint of the annular edge and the outer end of the rigid pipe column body is 1mm, and the inner arc radius of the arc-shaped switching section is 0.5 mm.

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