CN215111212U

CN215111212U - Double-wall corrugated pipe with strong corrosion resistance

Info

Publication number: CN215111212U
Application number: CN202120515666.6U
Authority: CN
Inventors: 林旭晓
Original assignee: Guizhou Qianmou Science And Technology Development Co ltd
Current assignee: Guizhou Qianmou Science And Technology Development Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-12-10
Anticipated expiration: 2031-03-11

Abstract

The utility model discloses a double-wall corrugated pipe with strong corrosion resistance, which comprises corrugated pipe joints arranged at the ends of two double-wall corrugated pipes, wherein the joint of the two corrugated pipe joints is sleeved with a heat shrinkage sleeve, a supporting structure is arranged between the two corrugated pipe joints relative to the inner side of the heat shrinkage sleeve, the supporting structure comprises an inner connecting pipe fitting and an outer connecting pipe fitting, the inner connecting pipe fitting and the outer connecting pipe fitting are of an integral structure, and an annular slot is formed between the inner connecting pipe fitting and the outer connecting pipe fitting; through setting up the bearing structure who comprises interior connecting tube spare, outer connecting tube spare, annular slot, intubate, interior inserting groove and block mechanism, can play good supporting role to the junction of two bellows joints and heat shrink cover to avoid the junction to take place buckling deformation, improve the holistic connection stability of bellows, prevent that external liquid and gas from getting into the bellows inboard, the holistic corrosion resistance of effectual increase bellows and protectiveness.

Description

Double-wall corrugated pipe with strong corrosion resistance

Technical Field

The utility model belongs to the technical field of the double-walled bellows, concretely relates to strong double-walled bellows of corrosion resistance.

Background

The double-wall corrugated pipe is a novel pipe with an outer wall with an annular structure and a smooth inner wall, is firstly developed and succeeded in Germany in the early 80 s, has been developed to a complete product series from a single variety through more than ten years of development and improvement, and needs a heat shrinkable sleeve for heating to connect two pipelines when being connected.

When the existing double-wall corrugated pipe is used, joints of two double-wall corrugated pipes are connected through a heat shrinkable sleeve, the heat shrinkable sleeve is heated during connection, so that a base layer of the heat shrinkable sleeve is melted and wraps the joints of the two pipes for connection, but the problem of bending deformation of the joints is easily caused because the joints of the two pipe joints and the heat shrinkable sleeve are not provided with any supporting structures, so that the connection stability is influenced, external liquid and gas enter the inner side of the corrugated pipe, the integral corrosion resistance of the corrugated pipe is influenced, and the double-wall corrugated pipe with high corrosion resistance is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-walled bellows that corrosion resistance is strong to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the double-wall corrugated pipe with high corrosion resistance comprises corrugated pipe joints arranged at the ends of two double-wall corrugated pipes, wherein a heat shrinkage sleeve is sleeved at the joint of the two corrugated pipe joints, a supporting structure is arranged between the two corrugated pipe joints and is opposite to the inner side of the heat shrinkage sleeve, the supporting structure comprises an inner connecting pipe fitting and an outer connecting pipe fitting, the inner connecting pipe fitting and the outer connecting pipe fitting are of an integral structure, an annular slot is formed between the inner connecting pipe fitting and the outer connecting pipe fitting, an integral insertion pipe is arranged at the top end of each corrugated pipe joint and is embedded into the inner side of the annular slot, an inner insertion slot corresponding to the inner connecting pipe fitting is formed in the inner wall of each corrugated pipe joint, the end part of each inner connecting pipe fitting is embedded into the inner side of the inner insertion slot, and a clamping mechanism is arranged between the outer connecting pipe fitting and the insertion pipe fitting.

Preferably, the clamping mechanism comprises an inner groove formed in the outer connecting pipe fitting, right-angled triangle fixture blocks, connecting rods and springs are arranged in the inner groove, the two connecting rods are all fixed to the right-angled triangle fixture blocks, the two springs are respectively sleeved on the two connecting rods, rectangular clamping grooves corresponding to the right-angled triangle fixture blocks are formed in the outer side surface of the insertion pipe, the top ends of the right-angled triangle fixture blocks are clamped in the inner sides of the rectangular clamping grooves, rectangular grooves are formed in the outer side surface of the outer connecting pipe fitting, pull plates are arranged in the rectangular grooves, and the top ends of the connecting rods penetrate through the rectangular grooves and are fixed to the pull plates.

Preferably, the outer side surface of the outer connecting pipe fitting is symmetrically provided with arc-shaped inner catching grooves relative to the two ends of each rectangular groove, and the two ends of the pulling plate are respectively positioned in the two arc-shaped inner catching grooves.

Preferably, one end of the inner groove is provided with two rod holes corresponding to the connecting rod, and the other end of the inner groove is provided with an ejection hole corresponding to the size of the top end of the right-angled triangular clamping block.

Preferably, the outer wall of the inner connecting pipe fitting is uniformly provided with a plurality of integrated annular rings, and the inner wall of the inner slot is provided with an annular groove corresponding to the annular rings.

Preferably, an anti-disengaging mechanism is arranged between the heat shrinkable sleeve and the corrugated pipe joint, the anti-disengaging mechanism comprises an annular protrusion arranged on the surface of the corrugated pipe joint, the annular protrusion and the corrugated pipe joint are of an integral structure, a plurality of integral anti-disengaging protrusions are uniformly arranged on one side, opposite to the annular protrusion, of the surface of the corrugated pipe joint, a plurality of anti-disengaging bayonets corresponding to the anti-disengaging protrusions are formed in the two ends of the heat shrinkable sleeve, the anti-disengaging protrusions are clamped on the inner sides of the anti-disengaging bayonets, a rotary pressing plate is rotatably connected to the top surface of each annular protrusion, opposite to one side, of each anti-disengaging protrusion, a fastening bolt penetrates through the top end of each rotary pressing plate, threaded grooves corresponding to the fastening bolts are formed in the top surface of each anti-disengaging protrusion, and the top end of each rotary pressing plate is fixed to the anti-disengaging protrusions through the fastening bolts.

Preferably, the surface of the fastening bolt is uniformly provided with a plurality of integrated anti-skid convex strips, and the cross section of the anti-skid convex strips is in a right trapezoid shape.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through setting up the bearing structure who comprises interior connecting tube spare, outer connecting tube spare, annular slot, intubate, interior inserting groove and block mechanism, can play good supporting role to the junction of two bellows joints and heat shrink cover to avoid the junction to take place buckling deformation, improve the holistic connection stability of bellows, prevent that external liquid and gas from getting into the bellows inboard, the holistic corrosion resistance of effectual increase bellows and protectiveness.

2. Through setting up the anti-disengaging mechanism who comprises annular arch, anticreep bayonet socket, rotary press plate and fastening bolt, can play good spacing anticreep effect to the heat shrink cover, further improvement bellows junction's stability and durability have solved the easy problem that takes place the displacement and drop of heat shrink cover in the former device at two bellows junctions.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the area A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of a portion of the area B of FIG. 1 according to the present invention;

FIG. 4 is a top view of the junction between the rotary platen and the anti-slip protrusions of the present invention;

in the figure: 1. a corrugated pipe joint; 2. an inner connecting pipe fitting; 3. an external connection pipe fitting; 4. a heat shrinkable sleeve; 5. inserting a tube; 6. an annular slot; 7. an inner tank; 8. pulling a plate; 9. a connecting rod; 10. a spring; 11. a right-angled triangular fixture block; 12. a rectangular clamping groove; 13. an inner slot; 14. an annular projection; 15. rotating the pressing plate; 16. fastening a bolt; 17. the anti-drop bulge; 18. and (4) anti-falling bayonets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1 to 4, the present invention provides a technical solution: a double-wall corrugated pipe with strong corrosion resistance comprises corrugated pipe joints 1 arranged at the ends of two double-wall corrugated pipes, wherein the corrugated pipe joints 1 and the double-wall corrugated pipes are of an integral structure, a heat-shrinkable sleeve 4 is sleeved at the joint of the two corrugated pipe joints 1, the inner layer of the heat-shrinkable sleeve 4 is epoxy primer coated on the surface of a steel pipe, the middle layer of the heat-shrinkable sleeve is hot melt adhesive, the outer layer of the heat-shrinkable sleeve is improved radiation crosslinked polyethylene base material, a supporting structure is arranged between the two corrugated pipe joints 1 relative to the inner side of the heat-shrinkable sleeve 4 and comprises an inner connecting pipe 2 and an outer connecting pipe 3, the inner connecting pipe 2 and the outer connecting pipe 3 are of an integral structure, an annular slot 6 is formed between the inner connecting pipe 2 and the outer connecting pipe 3, an integral insertion pipe 5 is arranged at the top end of the corrugated pipe joints 1, the insertion pipe 5 is embedded into the inner side of the annular slot 6, and an inner insertion slot 13 corresponding to the inner connecting pipe 2 is formed on the inner wall of the corrugated pipe joints 1, the end part of the inner connecting pipe fitting 2 is embedded into the inner side of the inner inserting groove 13, the clamping mechanism is arranged between the outer connecting pipe fitting 3 and the inserting pipe 5, and the connecting part of the two corrugated pipe joints 1 and the heat shrinkage sleeve 4 can be well supported, so that the bending deformation of the connecting part is avoided, and the integral connecting stability and corrosion resistance of the corrugated pipe are improved.

In this embodiment, it is preferred, block mechanism is including seting up at the inside groove 7 of outer joint pipe fitting 3, the inside of inside groove 7 is provided with right angled triangle fixture block 11, connecting rod 9 and spring 10, two connecting rods 9 are all fixed with right angled triangle fixture block 11, and two springs 10 overlap respectively and establish on two connecting rods 9, the outside surface of intubate 5 has been seted up with the corresponding rectangle draw-in groove 12 of right angled triangle fixture block 11, the top card of right angled triangle fixture block 11 is in the inboard of rectangle draw-in groove 12, the rectangular channel has been seted up on the outside surface of outer joint pipe fitting 3, and be equipped with arm-tie 8 in the rectangular channel, the top of connecting rod 9 runs through to the rectangular channel in and arm-tie 8 welded fastening, easily outer joint pipe fitting 3 is connected with the block of intubate 5.

In this embodiment, preferably, the outer side surface of the outer connecting pipe fitting 3 has arc-shaped inner catching grooves symmetrically arranged at two ends of each rectangular groove, and two ends of the pulling plate 8 are respectively located in the two arc-shaped inner catching grooves, so that the pulling plate 8 can be pulled up by an operator when the pulling plate is easily disassembled subsequently.

In this embodiment, preferably, one end of the inner groove 7 is provided with two rod holes corresponding to the connecting rod 9, and the other end of the inner groove 7 is provided with an ejection hole corresponding to the size of the top end of the right-angled triangular fixture block 11.

In this embodiment, preferably, the outer wall of the inner connecting pipe 2 is uniformly provided with a plurality of integrated annular rings, and the inner wall of the inner insertion groove 13 is provided with an annular groove corresponding to the annular rings, so as to further improve the sealing performance.

In this embodiment, preferably, an anti-slip mechanism is disposed between the heat shrink sleeve 4 and the bellows joint 1, the anti-slip mechanism includes an annular protrusion 14 disposed on the surface of the bellows joint 1, the annular protrusion 14 and the bellows joint 1 are of an integral structure, one side of the surface of the bellows joint 1 opposite to the annular protrusion 14 is uniformly provided with a plurality of integral anti-slip protrusions 17, both ends of the heat shrink sleeve 4 are respectively provided with a plurality of anti-slip bayonets 18 corresponding to the anti-slip protrusions 17, the anti-slip protrusions 17 are clamped inside the anti-slip bayonets 18, one side of the top surface of the annular protrusion 14 opposite to each anti-slip protrusion 17 is rotatably connected with a rotary press plate 15, the top end of the rotary press plate 15 is provided with a fastening bolt 16 in a penetrating manner, the top surface of the anti-slip protrusions 17 is provided with a threaded groove corresponding to the fastening bolt 16, the top end of the rotary press plate 15 is fixed to the anti-slip protrusions 17 through the fastening bolt 16, the surface of the fastening bolt 16 is uniformly provided with a plurality of integrated anti-skid convex strips, and the section of the anti-dropping bulge 17 is in a right trapezoid shape, so that the anti-dropping device can play a good role in limiting and dropping prevention for the heat shrinkable sleeve 4.

The utility model discloses a theory of operation and use flow: when two corrugated pipe joints 1 are connected, firstly, the inserting pipe 5 at the end part of the corrugated pipe joint 1 is inserted into the inner side of the annular slot 6, and the two ends of the inner connecting pipe 2 respectively enter the inner inserting slots 13 on the inner walls of the two corrugated pipe joints 1, when the inserting pipe 5 is inserted into the inner side of the annular slot 6, the right-angled triangular clamping block 11 is gradually pushed into the inner side of the inner slot 7, so that the spring 10 is gradually compressed until the inserting pipe 5 is completely inserted into the inner side of the annular slot 6, and at the moment, the top end of the right-angled triangular clamping block 11 is clamped into the inner side of the rectangular clamping slot 12 under the pushing of the spring 10, so that the clamping connection of the outer connecting pipe 3 and the inserting pipe 5 can be completed, and the primary connection between the two corrugated pipe joints 1 is completed, then the heat-shrinkable sleeve 4 is sleeved at the connection part of the two corrugated pipe joints 1, the outer connecting pipe 3 is wrapped on the inner side, and the anti-off protrusions 17 are clamped into the inner sides of the anti-off bayonets 18 at the corresponding positions, at this moment, normal heating connection operation is carried out on the heat shrinkable sleeve 4, so that a base layer of the heat shrinkable sleeve 4 is heated and melted, the base layer is wrapped at the joint of the two corrugated pipe joints 1 to complete connection, finally, the top end of the rotary pressing plate 15 is rotated to the top of the anti-falling protrusion 17, then, the fastening bolt 16 is screwed clockwise, so that the top end of the fastening bolt 16 can be screwed into a thread groove at the top of the anti-falling protrusion 17, connection between the rotary pressing plate 15 and the anti-falling protrusion 17 can be completed, the pressing limit of the port outlet of the heat shrinkable sleeve 4 is completed through the rotary pressing plate 15, and the anti-falling effect is achieved, so that the overall connection stability of the corrugated pipe is effectively improved, and the overall corrosion resistance and the protection performance of the corrugated pipe are improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-walled bellows that corrosion resistance is strong, is including setting up corrugated pipe joint (1) at two double-walled bellows end portions, two the junction cover of corrugated pipe joint (1) is equipped with heat shrink cover (4), its characterized in that: the heat shrinkable sleeve is characterized in that a supporting structure is arranged between the corrugated pipe joints (1) relative to the inner side of the heat shrinkable sleeve (4), the supporting structure comprises an inner connecting pipe (2) and an outer connecting pipe (3), the inner connecting pipe (2) and the outer connecting pipe (3) are of an integrated structure, an annular slot (6) is formed between the inner connecting pipe (2) and the outer connecting pipe (3), an integral inserting pipe (5) is arranged at the top end of each corrugated pipe joint (1), the inserting pipe (5) is embedded into the inner side of the annular slot (6), an inner slot (13) corresponding to the inner connecting pipe (2) is formed in the inner wall of each corrugated pipe joint (1), the end part of each inner connecting pipe (2) is embedded into the inner side of the inner slot (13), and a clamping mechanism is arranged between the outer connecting pipe (3) and the inserting pipe (5).

2. A double-walled corrugated pipe of high corrosion resistance as claimed in claim 1 wherein: the clamping mechanism comprises an inner groove (7) formed in the outer connecting pipe fitting (3), right-angled triangle clamping blocks (11), connecting rods (9) and springs (10) are arranged in the inner groove (7), the two connecting rods (9) are fixed to the right-angled triangle clamping blocks (11), the springs (10) are sleeved on the two connecting rods (9) respectively, rectangular clamping grooves (12) corresponding to the right-angled triangle clamping blocks (11) are formed in the outer side surface of the insertion pipe (5), the top ends of the right-angled triangle clamping blocks (11) are clamped in the inner sides of the rectangular clamping grooves (12), a rectangular groove is formed in the outer side surface of the outer connecting pipe fitting (3), a pulling plate (8) is arranged in the rectangular groove, and the top ends of the connecting rods (9) penetrate through the rectangular groove and are fixed to the pulling plate (8).

3. A double-walled corrugated pipe having high corrosion resistance as claimed in claim 2, wherein: the outer side surface of the outer connecting pipe fitting (3) is symmetrically provided with arc-shaped inner catching grooves relative to the two ends of each rectangular groove, and the two ends of the pulling plate (8) are respectively positioned in the two arc-shaped inner catching grooves.

4. A double-walled corrugated pipe having high corrosion resistance as claimed in claim 2, wherein: one end of the inner groove (7) is provided with two rod holes corresponding to the connecting rod (9), and the other end of the inner groove (7) is provided with an ejection hole corresponding to the size of the top end of the right-angled triangle clamping block (11).

5. A double-walled corrugated pipe of high corrosion resistance as claimed in claim 1 wherein: the outer wall of the inner connecting pipe fitting (2) is uniformly provided with a plurality of integrated annular rings, and the inner wall of the inner slot (13) is provided with annular grooves corresponding to the annular rings.

6. A double-walled corrugated pipe of high corrosion resistance as claimed in claim 1 wherein: an anti-falling mechanism is arranged between the heat shrinkable sleeve (4) and the corrugated pipe joint (1), the anti-falling mechanism comprises annular protrusions (14) arranged on the surface of the corrugated pipe joint (1), the annular protrusions (14) and the corrugated pipe joint (1) are of an integrated structure, one side, opposite to the annular protrusions (14), of the surface of the corrugated pipe joint (1) is uniformly provided with a plurality of integrated anti-falling protrusions (17), two ends of the heat shrinkable sleeve (4) are respectively provided with a plurality of anti-falling bayonets (18) corresponding to the anti-falling protrusions (17), the anti-falling protrusions (17) are clamped on the inner sides of the anti-falling bayonets (18), one side, opposite to each anti-falling protrusion (17), of the top surface of each annular protrusion (14) is rotatably connected with a rotary pressing plate (15), the top end of each rotary pressing plate (15) is provided with a fastening bolt (16) in a penetrating manner, and thread grooves corresponding to the fastening bolts (16) are formed in the top surface of the anti-falling protrusions (17), the top end of the rotary pressure plate (15) is fixed with the anti-falling bulge (17) through a fastening bolt (16).

7. A double-walled corrugated pipe of high corrosion resistance as claimed in claim 6 wherein: the surface of fastening bolt (16) evenly is equipped with the anti-skidding sand grip of a plurality of integral types, the cross-section of anticreep arch (17) is right trapezoid.