CN112762243B - Double-layer pressure-resistant pipe - Google Patents

Double-layer pressure-resistant pipe Download PDF

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Publication number
CN112762243B
CN112762243B CN202011600210.6A CN202011600210A CN112762243B CN 112762243 B CN112762243 B CN 112762243B CN 202011600210 A CN202011600210 A CN 202011600210A CN 112762243 B CN112762243 B CN 112762243B
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Prior art keywords
pipe
half sleeve
sleeve
left half
right half
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CN202011600210.6A
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CN112762243A (en
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洪青锋
郑建珠
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Fujian Hengjie Plastic Industry New Material Co Ltd
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Fujian Hengjie Plastic Industry New Material Co Ltd
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Publication of CN112762243A publication Critical patent/CN112762243A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention relates to the technical field of pipelines, in particular to a double-layer pressure-resistant pipe, which comprises a hard outer sleeve and an inner pipe formed by compounding a plurality of layers; the two ends of the inner-layer pipe are respectively provided with a retaining ring, the outer surface of the inner-layer pipe is divided into a left semi-arc surface and a right semi-arc surface which are symmetrical to each other along any plane passing through the axial lead of the pipe, and the right semi-arc surface is provided with a protruding part. The invention has the beneficial effects that: the pipe can adjust the internal pressure and the external pressure through adaptive deformation, and further can bear the bidirectional pressure change from the inside or the outside of the pipe; when the inner pipe expands, the left half sleeve and the right half sleeve of the outer sleeve can be separated in an adaptive manner, so that the inner diameter of the outer sleeve is expanded to a certain extent to avoid the inner pipe from being broken due to the increase of the inner pressure.

Description

Double-layer pressure-resistant pipe
Technical Field
The invention relates to the technical field of pipelines, in particular to a double-layer pressure-resistant pipe.
Background
The existing pipes are generally laid on the ground or installed inside buildings, so that the pipes are often required to bear pressure from the inside and the outside of the pipes in the use process.
Wherein, the pressure that the inside and outside of pipeline received generally comes from following several aspects, 1, the flow of internal fluid increases and leads to the pressure increase of fluid to the pipeline inner wall; 2. the deformation of the inner wall of the pipeline is caused by the external temperature change or the temperature change of the internal fluid, so that the expansion and contraction pressure is generated; 3. the pressure of the surrounding environment of the pipeline on the outer wall of the pipeline is formed.
After the inside of the pipe is heated or the expansion occurs under the condition of flow improvement, the internal pressure is improved and reacts on the external soil environment, so that the external environment pressure is further increased, and at the moment, if the internal and external pressures of the local area of the pipe are unbalanced, the pipe can be possibly broken, so that the normal use of the pipeline is influenced. Therefore, how to provide a pipe capable of enduring the bidirectional pressure change inside and outside becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a double-layer pressure-resistant pipe capable of resisting the change of internal and external bidirectional pressure.
In order to solve the technical problems, the technical scheme of the invention is as follows: a double-layer pressure-resistant pipe comprises a hard outer sleeve and an inner pipe formed by compounding a plurality of layers;
two ends of the inner-layer pipe are respectively provided with a retaining ring, the outer surface of the inner-layer pipe is divided into a left semi-arc surface and a right semi-arc surface which are symmetrical to each other along any plane passing through the axial lead of the pipe, and the right semi-arc surface is provided with a convex part;
the outer pipe sleeve comprises a left half sleeve and a right half sleeve, the right half sleeve is connected to the outer wall of the left half sleeve in a sliding mode along the direction of an axial lead of the pipe, and the radian of the right half sleeve is larger than that of the left half sleeve;
the left half sleeve is attached to the left half cambered surface, a first clamping part is arranged on the outer surface of one side of the left half sleeve, and a plurality of tooth-shaped grooves are formed in the outer surface of the other side of the left half sleeve;
the right half sleeve is attached to the convex part of the right half cambered surface, the inner surface of one side of the right half sleeve is provided with a second clamping part clamped with the first clamping part, the other side of the right half sleeve covers the surface of the left half sleeve provided with the toothed groove, and the surface of the right half sleeve covering the toothed groove is provided with a plurality of toothed protrusions mutually clamped with the toothed groove;
the baffle ring is provided with an elastic pressing piece used for pressing the tooth-shaped bulge of the right half sleeve on the tooth-shaped groove of the left half sleeve, and the elastic pressing piece is positioned above the tooth-shaped groove.
Specifically, the inner tube from inside to outside includes inner tube, metal mesh and rubber outer tube, inner tube and rubber outer tube pass through hot melt and connect, the metal mesh inlays and locates between inner tube and the rubber outer tube.
Specifically, the metal net sleeve comprises a plurality of metal lantern rings, and adjacent metal lantern rings are fixedly connected through metal wires.
Specifically, the two ends of the left half sleeve are respectively provided with an arc-shaped slide rail with two closed ends, the right half sleeve is connected between the two slide rails in a sliding manner, the first clamping portion is a clamping groove formed in the end portion of the slide rail, and the second clamping portion is a clamping block corresponding to the clamping groove.
Specifically, elasticity compresses tightly the piece and includes boss, branch, spring and briquetting, boss fixed connection is on keeping off the ring, the through-hole has been seted up on the boss, the briquetting is located the boss below, the one end sliding connection of branch is in the through-hole, and other end fixed connection is on the briquetting, the branch outside is located to the spring housing, the one end and the boss fixed connection of spring, the other end and briquetting fixed connection.
Specifically, the elasticity compresses tightly the piece and still includes the cover body, the bottom fixed connection of the cover body is on the briquetting, the spout has been seted up to the both sides of boss, the both sides sliding connection of the cover body is in the spout.
Specifically, the bottom end of the pressing block is provided with a rubber gasket.
Specifically, a plurality of positioning holes are formed in the left half cambered surface, and a plurality of positioning blocks corresponding to the positioning holes are arranged on the inner wall of the left half sleeve.
The invention has the beneficial effects that: the pipe can adjust the internal pressure and the external pressure through adaptive deformation, and further can bear the bidirectional pressure change from the inside or the outside of the pipe; when the inner-layer pipe expands, the left half sleeve and the right half sleeve of the outer sleeve can be separated in an adaptive manner, so that the inner diameter of the outer sleeve is expanded to a certain extent to avoid the inner-layer pipe from being cracked due to the increase of the internal pressure; the outer sleeve can bear external pressure for the inner-layer pipe, and can also uniformly apply the external pressure to the surface of the inner-layer pipe, so that the inner-layer pipe is prevented from being broken due to inconsistent internal and external pressures in a local area; the elastic pressing piece presses the tooth-shaped bulge of the left half sleeve on the tooth-shaped groove of the right half sleeve, so that the left half sleeve and the right half sleeve are prevented from being separated easily.
Drawings
FIG. 1 is a schematic structural view of a double-layer pressure-resistant pipe according to an embodiment of the present invention;
FIG. 2 is a schematic view of an outer jacket structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an outer jacket according to an embodiment of the present invention;
FIG. 4 is a schematic view of the inner tube structure according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of an elastic pressing member according to an embodiment of the present invention;
description of the reference symbols:
1. an outer pipe sleeve; 11. a left half sleeve; 111. a first clamping part; 112. a tooth-shaped groove; 113. positioning blocks; 114. a slide rail; 12. a right half sleeve; 121. a second clamping part; 122. a tooth-shaped bulge; 2. an inner layer tube; 22. an inner tube; 23. a metal mesh sleeve; 231. a metal collar; 232. a metal wire; 24. a rubber outer tube; 241. a boss portion; 242. positioning holes; 3. a baffle ring; 4. an elastic pressing member; 41. a boss; 411. a chute; 42. a strut; 43. a spring; 44. briquetting; 45. a cover body.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 5, the double-layer pressure-resistant pipe of the present invention comprises a hard outer jacket 1 and a multi-layer composite inner pipe 2;
two ends of the inner-layer pipe 2 are respectively provided with a retaining ring 3, the outer surface of the inner-layer pipe 2 is divided into a left semi-arc surface and a right semi-arc surface which are symmetrical to each other along any plane of the axial lead of the pipe, and the right semi-arc surface is provided with a convex part 241;
the outer pipe sleeve 1 comprises a left half sleeve 11 and a right half sleeve 12, the right half sleeve 12 is connected to the outer wall of the left half sleeve 11 in a sliding mode in the direction of the axis of the pipe, and the radian of the right half sleeve 12 is larger than that of the left half sleeve 11;
the left half sleeve 11 is attached to the left half cambered surface, the outer surface of one side of the left half sleeve 11 is provided with a first clamping part 111, and the outer surface of the other side of the left half sleeve 11 is provided with a plurality of tooth-shaped grooves 112;
the right half sleeve 12 is attached to the convex portion 241 of the right half cambered surface, the inner surface of one side of the right half sleeve 12 is provided with a second clamping portion 121 clamped with the first clamping portion 111, the other side of the right half sleeve covers the surface of the left half sleeve 11 provided with the tooth-shaped groove 112, and the surface of the right half sleeve 12 covering the tooth-shaped groove 112 is provided with a plurality of tooth-shaped protrusions 122 mutually clamped with the tooth-shaped groove 112;
the retainer ring 3 is provided with an elastic pressing member 4 for pressing the tooth-shaped protrusion 122 of the right half sleeve 12 against the tooth-shaped groove 112 of the left half sleeve 11, and the elastic pressing member 4 is located above the tooth-shaped groove 112.
The working principle of the invention is as follows: when the pipe is assembled, the elastic pressing piece 4 on the baffle ring 3 is lifted upwards, the left half sleeve 11 of the outer sleeve 1 is attached to the left half cambered surface of the inner pipe 2, then the right half sleeve 12 slides on the surface of the left half sleeve 11 along the direction of the axis of the pipe, so that the right half sleeve 12 is attached to the convex part 241 of the right half cambered surface until the first clamping part 111 and the second clamping part 121 are clamped with each other, meanwhile, the toothed bulge 122 of the right half sleeve 12 is completely clamped into the toothed groove 112 of the left half sleeve 11, and finally, the elastic pressing piece 4 is loosened, so that the toothed bulge 122 of the right half sleeve 12 is pressed on the toothed groove 112 of the left half sleeve 11.
Wherein, outer jacket 1 can carry out the selectivity installation according to actual user demand, for example when tubular product part is buried underground in the ground and the part extends to indoor, because indoor temperature change is little and do not have the environment to the pressure of tubular product, consequently the tubular product lies in the part of ground and can installs outer jacket 1, and lies in indoor part and then need not the installation to reach the purpose of practicing thrift the cost.
When the flow rate inside the pipe material is increased or the internal pressure of the inner pipe 2 is increased due to the temperature rise of the fluid inside the pipe material, the inner pipe 2 slightly expands, the tooth-shaped protrusions 122 on the right half sleeve 12 of the outer sleeve 1 are separated from the tooth-shaped grooves 112 of the left half sleeve 11 by the expansion force of the inner pipe 2, and the tooth-shaped grooves 112 are multiple, so that the tooth-shaped protrusions 122 are re-clamped into the new tooth-shaped grooves 112 after being separated, and the inner diameter of the outer sleeve 1 is adaptively expanded to a certain extent to avoid the inner pipe 2 from being broken due to the increase of the internal pressure.
Simultaneously outer pipe sleeve 1 is the stereoplasm polyethylene material, can bear the pressure that external environment applyed to tubular product to play the guard action to inlayer pipe 2, outer pipe sleeve 1 not only can bear most external pressure for inlayer pipe 2, can also evenly apply external pressure in inlayer pipe 2 surface simultaneously, avoids inlayer pipe 2 because the pressure is inconsistent takes place to break inside and outside the local area.
As can be seen from the above description, the beneficial effects of the present invention are: the pipe can adjust the internal pressure and the external pressure through adaptive deformation, and further can bear the bidirectional pressure change from the inside or the outside of the pipe; when the inner pipe expands, the left half sleeve and the right half sleeve of the outer sleeve can be separated in an adaptive manner, so that the inner diameter of the outer sleeve is expanded to a certain extent to avoid the inner pipe from being broken due to the increase of the internal pressure; the outer sleeve can bear external pressure for the inner-layer pipe, and can also uniformly apply the external pressure to the surface of the inner-layer pipe, so that the inner-layer pipe is prevented from being broken due to inconsistent internal and external pressures in a local area; the elastic pressing piece presses the tooth-shaped bulge of the left half sleeve on the tooth-shaped groove of the right half sleeve, so that the left half sleeve and the right half sleeve are prevented from being separated easily.
Further, the inner-layer pipe 2 comprises an inner pipe 22, a metal net sleeve 23 and a rubber outer pipe 24 from inside to outside, the inner pipe 22 and the rubber outer pipe 24 are connected through hot melting, and the metal net sleeve 23 is embedded between the inner pipe 22 and the rubber outer pipe 24.
According to the description, the rubber outer pipe of the inner pipe has certain buffering capacity, rigid impact between the inner pipe and the outer pipe sleeve can be avoided, the metal net sleeve can enable the inner pipe to have better integrity, the deformation resistance of the inner pipe can be improved, the internal pressure resistance of the inner pipe can be improved, and meanwhile bending deformation or damage of the inner pipe caused by vibration of the external environment can be avoided.
Further, the metal mesh 23 includes a plurality of metal rings 231, and adjacent metal rings 231 are fixedly connected to each other through a metal wire 232.
Further, two ends of the left half sleeve 11 are respectively provided with an arc-shaped sliding rail 114 with two closed ends, the right half sleeve 12 is slidably connected between the two sliding rails 114, the first clamping portion 111 is a clamping groove formed in the end portion of the sliding rail 114, and the second clamping portion 121 is a clamping block corresponding to the clamping groove.
According to the description, the slide rail can enable the right half sleeve and the left half sleeve to be connected in a stable sliding mode, so that the right half sleeve and the left half sleeve are prevented from being separated from each other, meanwhile, a certain gap is formed between the clamping groove and the clamping block, and the inner diameter between the left half sleeve and the right half sleeve can be expanded adaptively according to expansion of the inner-layer pipe.
Further, elasticity compresses tightly piece 4 and includes boss 41, branch 42, spring 43 and briquetting 44, boss 41 fixed connection is on keeping off ring 3, the through-hole has been seted up on boss 41, briquetting 44 is located boss 41 below, the one end sliding connection of branch 42 is in the through-hole, and other end fixed connection is on briquetting 44, the branch 42 outside is located to spring 43 cover, the one end and the boss 41 fixed connection of spring 43, the other end and briquetting 44 fixed connection.
As can be seen from the above description, the pressing block of the elastic pressing piece can be pressed on the surface of the right half sleeve by the elastic force of the spring, and meanwhile, the support rod can avoid the dislocation between the pressing block and the boss.
Further, the elastic pressing part 4 further comprises a cover body 45, the bottom end of the cover body 45 is fixedly connected to the pressing block 44, sliding grooves 411 are formed in two sides of the boss 41, and two sides of the cover body 45 are slidably connected to the sliding grooves 411.
As can be seen from the above description, the cover body can prevent external dust from entering between the boss and the pressing block.
Further, a rubber gasket is arranged at the bottom end of the pressing block 44.
Further, a plurality of positioning holes 242 are formed in the left half arc surface, and a plurality of positioning blocks 113 corresponding to the positioning holes 242 are formed in the inner wall of the left half sleeve 11.
Example one
A double-layer pressure-resistant pipe comprises a hard outer sleeve 1 and an inner layer pipe 2 formed by compounding a plurality of layers;
two ends of the inner-layer pipe 2 are respectively provided with a retaining ring 3, the inner-layer pipe 2 comprises an inner pipe 22, a metal mesh sleeve 23 and a rubber outer pipe 24 from inside to outside, the inner pipe 22 and the rubber outer pipe 24 are connected through hot melting, the metal mesh sleeve 23 is embedded between the inner pipe 22 and the rubber outer pipe 24, the metal mesh sleeve 23 comprises a plurality of metal lantern rings 231, and the adjacent metal lantern rings 231 are fixedly connected through metal wires 232;
the outer surface of the inner layer pipe 2 is divided into a left semi-arc surface and a right semi-arc surface which are symmetrical to each other along any plane of the axial lead of the pipe material, the right semi-arc surface is provided with a convex part 241, wherein the left semi-arc surface and the right semi-arc surface are both the outer surface of the rubber outer pipe 24, and the convex part 241 is also arranged on the surface of the rubber outer pipe 24;
the outer pipe sleeve 1 comprises a left half sleeve 11 and a right half sleeve 12, the right half sleeve 12 is connected to the outer wall of the left half sleeve 11 in a sliding mode in the direction of an axial lead of a pipe, and the radian of the right half sleeve 12 is larger than that of the left half sleeve 11;
the left half sleeve 11 is attached to the left half arc surface, the outer surface of one side of the left half sleeve 11 is provided with a first clamping part 111, the outer surface of the other side of the left half sleeve 11 is provided with a plurality of tooth-shaped grooves 112, the left half arc surface is provided with a plurality of positioning holes 242, and the inner wall of the left half sleeve 11 is provided with a plurality of positioning blocks 113 corresponding to the positioning holes 242;
the right half sleeve 12 is attached to the convex portion 241 of the right half cambered surface, the inner surface of one side of the right half sleeve 12 is provided with a second clamping portion 121 clamped with the first clamping portion 111, the other side of the right half sleeve covers the surface of the left half sleeve 11 provided with the tooth-shaped groove 112, and the surface of the right half sleeve 12 covering the tooth-shaped groove 112 is provided with a plurality of tooth-shaped protrusions 122 mutually clamped with the tooth-shaped groove 112;
the two ends of the left half sleeve 11 are respectively provided with an arc-shaped sliding rail 114 with two closed ends, the right half sleeve 12 is slidably connected between the two sliding rails 114, the first clamping portion 111 is a clamping groove formed in the end portion of the sliding rail 114, and the second clamping portion 121 is a clamping block corresponding to the clamping groove;
the retainer ring 3 is provided with an elastic pressing piece 4 for pressing the tooth-shaped protrusion 122 of the right half sleeve 12 onto the tooth-shaped groove 112 of the left half sleeve 11, and the elastic pressing piece 4 is positioned above the tooth-shaped groove 112;
elasticity compresses tightly piece 4 and includes boss 41, branch 42, spring 43 and briquetting 44, 41 fixed connection of boss is on keeping off ring 3, the through-hole has been seted up on the boss 41, briquetting 44 is located 41 below of boss, the one end sliding connection of branch 42 is in the through-hole, and other end fixed connection is on briquetting 44, branch 42 outside is located to spring 43 cover, the one end and the 41 fixed connection of boss of spring 43, the other end and briquetting 44 fixed connection, elasticity compresses tightly piece 4 still including the cover body 45, the bottom fixed connection of the cover body 45 is on briquetting 44, spout 411 has been seted up to the both sides of boss 41, the both sides sliding connection of the cover body 45 is in spout 411, the bottom of briquetting 44 is equipped with the rubber packing piece.
In conclusion, the beneficial effects provided by the invention are as follows: the pipe can adjust the internal pressure and the external pressure through adaptive deformation, and further can bear the bidirectional pressure change from the inside or the outside of the pipe; when the inner pipe expands, the left half sleeve and the right half sleeve of the outer sleeve can be separated in an adaptive manner, so that the inner diameter of the outer sleeve is expanded to a certain extent to avoid the inner pipe from being broken due to the increase of the internal pressure; the outer sleeve can bear external pressure for the inner-layer pipe, and can also uniformly apply the external pressure to the surface of the inner-layer pipe, so that the inner-layer pipe is prevented from being broken due to inconsistent internal and external pressures in a local area; the elastic pressing piece presses the tooth-shaped bulge of the left half sleeve on the tooth-shaped groove of the right half sleeve, so that the left half sleeve and the right half sleeve are prevented from being separated easily. The rubber outer tube of inlayer pipe has certain buffer capacity, can avoid taking place the rigidity between inlayer pipe and the outer pipe sleeve and strike, and the metal mesh cover then can make inlayer pipe have better wholeness, can improve its anti deformation's ability, not only can improve the anti interior pressure ability of inlayer pipe, can avoid simultaneously leading to inlayer pipe to take place bending deformation or damage because external environment shakes. The slide rail can make and realize stable sliding connection between half cover on the right side and the half cover on the left side and be connected, avoids the two to take place to break away from, has certain clearance between draw-in groove and the fixture block simultaneously, and then makes the internal diameter can expand according to the inflation of inlayer pipe between half cover on the left side and the half cover on the right side adaptability. The briquetting that the elasticity compressed tightly the piece receives the elasticity of spring and can press on the surface of right half cover, and branch can avoid taking place the dislocation between briquetting and the boss simultaneously. The cover body can prevent external dust from entering between the boss and the pressing block.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (7)

1. A double-layer pressure-resistant pipe is characterized by comprising a hard outer sleeve and an inner layer pipe formed by compounding a plurality of layers;
two ends of the inner-layer pipe are respectively provided with a retaining ring, the outer surface of the inner-layer pipe is divided into a left semi-arc surface and a right semi-arc surface which are symmetrical to each other along any plane passing through the axial lead of the pipe, and the right semi-arc surface is provided with a convex part;
the outer pipe sleeve comprises a left half sleeve and a right half sleeve, the right half sleeve is connected to the outer wall of the left half sleeve in a sliding mode along the direction of an axial lead of the pipe, and the radian of the right half sleeve is larger than that of the left half sleeve;
the left half sleeve is attached to the left half cambered surface, the outer surface of one side of the left half sleeve is provided with a first clamping part, and the outer surface of the other side of the left half sleeve is provided with a plurality of tooth-shaped grooves;
the right half sleeve is attached to the convex part of the right half cambered surface, the inner surface of one side of the right half sleeve is provided with a second clamping part clamped with the first clamping part, the other side of the right half sleeve covers the surface of the left half sleeve provided with the toothed groove, and the surface of the right half sleeve covering the toothed groove is provided with a plurality of toothed protrusions mutually clamped with the toothed groove;
the two ends of the left half sleeve are respectively provided with an arc-shaped sliding rail with two closed ends, the right half sleeve is connected between the two sliding rails in a sliding manner, the first clamping part is a clamping groove formed in the end part of the sliding rail, the second clamping part is a clamping block corresponding to the clamping groove, and a gap is formed between the clamping groove and the clamping block;
the baffle ring is provided with an elastic pressing piece used for pressing the tooth-shaped bulge of the right half sleeve on the tooth-shaped groove of the left half sleeve, and the elastic pressing piece is positioned above the tooth-shaped groove.
2. The double-layer pressure-resistant pipe material as claimed in claim 1, wherein the inner pipe comprises an inner pipe, a metal net sleeve and an outer rubber pipe from inside to outside, the inner pipe and the outer rubber pipe are connected by hot melting, and the metal net sleeve is embedded between the inner pipe and the outer rubber pipe.
3. The double-layer pressure-resistant pipe material as claimed in claim 2, wherein the metal net comprises a plurality of metal rings, and adjacent metal rings are fixedly connected through metal wires.
4. The double-layer pressure-resistant pipe material as claimed in claim 1, wherein the elastic pressing member comprises a boss, a supporting rod, a spring and a pressing block, the boss is fixedly connected to the retaining ring, a through hole is formed in the boss, the pressing block is located below the boss, one end of the supporting rod is slidably connected in the through hole, the other end of the supporting rod is fixedly connected to the pressing block, the spring is sleeved outside the supporting rod, one end of the spring is fixedly connected to the boss, and the other end of the spring is fixedly connected to the pressing block.
5. The double-layer pressure-resistant pipe material as claimed in claim 4, wherein the elastic pressing member further comprises a cover body, the bottom end of the cover body is fixedly connected to the pressing block, sliding grooves are formed in two sides of the boss, and two sides of the cover body are slidably connected to the sliding grooves.
6. The double-layer pressure pipe according to claim 4, wherein a rubber gasket is provided at a bottom end of the press block.
7. The double-layer pressure-resistant pipe material as claimed in claim 1, wherein the left half cambered surface is provided with a plurality of positioning holes, and the inner wall of the left half sleeve is provided with a plurality of positioning blocks corresponding to the positioning holes.
CN202011600210.6A 2020-12-30 2020-12-30 Double-layer pressure-resistant pipe Active CN112762243B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011600210.6A CN112762243B (en) 2020-12-30 2020-12-30 Double-layer pressure-resistant pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011600210.6A CN112762243B (en) 2020-12-30 2020-12-30 Double-layer pressure-resistant pipe

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CN112762243A CN112762243A (en) 2021-05-07
CN112762243B true CN112762243B (en) 2022-06-14

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2292175A1 (en) * 1974-11-19 1976-06-18 Plastic Omnium Cie TUBES REINFORCED IN SYNTHETIC MATERIAL, ESPECIALLY PTFE
CN204477523U (en) * 2015-02-14 2015-07-15 洪川野 A kind of freeze proof tubing
CN207729067U (en) * 2017-12-19 2018-08-14 北京中冶和坤天冕工程技术有限公司 A kind of insulating tube
CN210566767U (en) * 2019-07-24 2020-05-19 吴江市拓研电子材料有限公司 High-temperature-resistant PVC (polyvinyl chloride) sleeve
CN111173976B (en) * 2020-02-22 2021-08-27 台州永信阀门有限公司 Three-way valve
CN111350889B (en) * 2020-03-13 2021-08-03 宁波市浴耀管业有限公司 Corrosion-resistant corrugated pipe for natural gas conveying

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