CN113623473A - Pipeline purges external plugging device - Google Patents

Pipeline purges external plugging device Download PDF

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Publication number
CN113623473A
CN113623473A CN202110926359.1A CN202110926359A CN113623473A CN 113623473 A CN113623473 A CN 113623473A CN 202110926359 A CN202110926359 A CN 202110926359A CN 113623473 A CN113623473 A CN 113623473A
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CN
China
Prior art keywords
pipeline
sleeve
valve
flange
axial direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110926359.1A
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Chinese (zh)
Inventor
胡月
胡承启
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Yueqiheng Rubber And Plastic Products Co Ltd
Original Assignee
Hebei Yueqiheng Rubber And Plastic Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Yueqiheng Rubber And Plastic Products Co Ltd filed Critical Hebei Yueqiheng Rubber And Plastic Products Co Ltd
Priority to CN202110926359.1A priority Critical patent/CN113623473A/en
Publication of CN113623473A publication Critical patent/CN113623473A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/062—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends specially adapted for use with attachments, e.g. reduction units, T-pieces, bends or the like
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/07—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)

Abstract

The invention provides an external plugging device for pipeline purging, which comprises a valve connecting piece, a driving sleeve, a clamping mechanism, a rear abutting piece, a sealing ring and a sealing driving assembly. The valve connecting piece is used for installing a valve; the driving sleeve is sleeved between the outer wall of the pipeline and the sleeve in the radial direction of the pipeline and can slide in the axial direction of the pipeline; the clamping mechanism comprises a plurality of clamping blocks arranged around the periphery of the pipeline and a plurality of clamping rings which are used for being sleeved on the outer wall of the pipeline and have the elastic opening tendency towards the outer side along the radial direction of the pipeline; the rear butt joint piece is sleeved on the periphery of the pipeline and can slide along the axial direction of the pipeline; the sealing ring is positioned between the driving sleeve and the rear abutting part along the axial direction of the pipeline; the sealing driving assembly drives the clamping mechanism to clamp and fix the periphery of the pipeline, and the sealing ring is radially deformed to seal the sleeve. The invention provides an external pipeline purging plugging device, and aims to solve the technical problems of time and labor waste and high cost in purging operation of the interior of a pipeline.

Description

Pipeline purges external plugging device
Technical Field
The invention belongs to the technical field of pipeline plugging devices, and particularly relates to an external plugging device for pipeline purging.
Background
After the pipeline is welded, purging (blasting purging) is performed on the interior of the pipeline. During specific purging operation, flanges are welded at two ends of a pipeline, a butterfly valve is installed on the flanges, high-pressure gas is filled into the pipeline, and the butterfly valve is opened to release the high-pressure gas to achieve blasting purging in the pipeline. The pipeline is required to be recovered after the purging is finished, so the purging operation needs to be carried out by welding and dismantling the flange, the operation is time-consuming and labor-consuming, and the cost is very high.
Disclosure of Invention
The embodiment of the invention provides an external plugging device for purging a pipeline, and aims to solve the technical problems of time and labor waste and high cost in purging operation of the interior of the pipeline.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is an external occluder for pipeline purging, which comprises: the valve connecting piece is used for installing a valve and comprises a connecting piece body positioned at one end of the pipeline and a sleeve connected with the connecting body, the sleeve extends along the axial direction of the pipeline and is sleeved outside the pipeline, and the connecting piece body is provided with a through hole to communicate the pipeline and the valve;
the driving sleeve is sleeved between the outer wall of the pipeline and the sleeve in the radial direction of the pipeline and can slide in the axial direction of the pipeline, the driving sleeve is provided with an inner conical cambered surface, and the large end of the inner conical cambered surface is close to one side of the valve connecting piece;
the clamping mechanism comprises a plurality of clamping blocks arranged around the periphery of the pipeline and a clamping ring which is used for being sleeved on the outer wall of the pipeline and has the tendency of opening outwards along the radial direction of the pipeline, and the outer wall of each clamping block is respectively provided with an outer cone cambered surface matched with the inner cone cambered surface and an abutting cambered surface used for abutting against the outer wall of the pipeline; the butt arc surface is provided with a clamping ring clamping groove used for clamping with a clamping ring; each clamping block is located between the outer wall of the pipeline and the sleeve along the radial direction of the pipeline, and one end of each clamping block is used for being abutted against the valve connecting piece;
the rear butt joint piece is sleeved on the periphery of the pipeline and can slide along the axial direction of the pipeline;
the sealing ring is sleeved between the outer wall of the pipeline and the sleeve along the radial direction of the pipeline and is positioned between the driving sleeve and the rear abutting part along the axial direction of the pipeline; and
and the sealing driving assembly is used for driving the valve connecting piece and the rear abutting piece to be close to each other along the axial direction of the pipeline, so that the driving sleeve drives the clamping mechanism to be clamped and fixed on the periphery of the pipeline, and the rear abutting piece and the driving sleeve extrude the sealing ring, so that the sealing ring is radially deformed to seal the sleeve.
In one possible implementation, the collar is a resilient collar structure having a tendency to expand radially outwardly of the pipe.
In a possible implementation manner, the sealing driving assembly comprises a screw rod and a first nut, one end of the screw rod is connected with the valve connecting piece, and the other end of the screw rod penetrates through the rear abutting piece along the axial direction of the pipeline and then is in threaded connection with the first nut; the first nut is abutted to the rear abutting part, and the rear abutting part is driven to approach the valve connecting part by rotating the first nut.
In a possible implementation manner, the seal driving assembly further includes a second nut, and one end of the screw rod penetrates through the valve connecting piece and then is in threaded connection with the second nut, so that one end of the screw rod is connected with the valve connecting piece.
In one possible implementation, the seal drive assembly has multiple sets that are uniformly disposed around the circumference of the pipe.
In a possible implementation manner, the connector body comprises a first flange for installing a valve, a second flange arranged at a distance from the first flange along the axial direction of the pipeline, and a connecting cylinder for connecting the first flange and the second flange; the sleeve is connected with the second flange, and the sealing driving assembly is connected with the second flange.
In a possible implementation manner, the first flange is provided with a valve mounting hole.
In a possible implementation manner, a plurality of protruding assemblies which are used for enhancing the abutting force with the outer wall of the pipeline and are arranged at intervals along the axial direction of the abutting arc surface are arranged on the abutting arc surface, and each protruding assembly comprises a plurality of protruding structures which are arranged at intervals along the circumferential direction of the abutting arc surface.
In a possible implementation manner, the rear abutting part comprises an abutting cylinder extending into the sleeve and used for abutting against the sealing ring and a third flange connected with the abutting cylinder, and the other end of the screw rod penetrates through the third flange along the axial direction of the pipeline and then is in threaded connection with the first nut.
The pipeline purging external plugging device provided by the invention has the beneficial effects that: compared with the prior art, the pipeline and the valve are communicated through the valve connecting piece, the clamping mechanism is enabled to move towards one side of the valve connecting piece through the driving sleeve, so that the clamping mechanism is abutted against the valve connecting piece, then under the matching action of the outer cone cambered surface and the inner cone cambered surface, all the clamping blocks are gathered together along the radial direction of the pipeline, and the abutted cambered surface is abutted against and fixed with the outer wall of the pipeline, so that the fixed installation of the plugging device is realized; through setting up sealed drive assembly to the axial displacement of drive back butt piece along the pipeline makes drive cover and back butt piece extrusion sealing washer, and the radial deformation takes place for the sealing washer, thereby sealed sleeve, convenient operation saves the cost.
Drawings
Fig. 1 is one of schematic structural diagrams of an external pipeline purging occluder according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an explosion structure of the pipeline purging external plugging device provided by the embodiment of the invention;
FIG. 3 is a schematic view of a clamping mechanism of the external occluder for pipeline purging according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a clamping block structure of the external pipeline purging occluder according to an embodiment of the present invention;
fig. 5 is a second schematic structural diagram of the external pipeline purging occluder according to the embodiment of the present invention;
fig. 6 is a schematic cross-sectional view taken at a-a in fig. 5.
Description of reference numerals: 10. a valve connector; 11. a connector body; 111. a first flange; 112. a connecting cylinder; 113. a second flange; 12. a sleeve; 20. a drive sleeve; 30. a clamping mechanism; 31. a clamping block; 311. A boss assembly; 312. a retainer ring clamping groove; 32. a collar; 40. a rear abutment member; 41. a third flange; 42. A butting cylinder; 50. a seal ring; 60. a seal drive assembly; 61. a screw; 62. a first nut; 63. a second nut; 70. a pipeline.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, are used for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 6 together, the external pipeline purging plugging device provided by the present invention will now be described. The pipeline purging external plugging device comprises a valve connecting piece 10, a driving sleeve 20, a clamping mechanism 30, a rear abutting piece 40, a sealing ring 50 and a sealing driving assembly 60. The valve connector 10 is used for valve installation. The valve connector 10 includes a connector body 11 and a sleeve 12. The connector body 11 is located at one end of the pipeline 70, the sleeve 12 is connected with the connector body 11, and the sleeve 12 extends axially along the pipeline 70 and is sleeved outside the pipeline 70. The connector body 11 is provided with a through hole to communicate the pipe 70 and the valve.
The driving sleeve 20 is sleeved between the outer wall of the pipeline and the sleeve 12 along the radial direction of the pipeline 70, and the driving sleeve 20 can slide along the axial direction of the pipeline 70. The driving sleeve 20 has an inner tapered curved surface, and a large end of the inner tapered curved surface is adjacent to one side of the valve connecting member 10.
The clamping mechanism 30 comprises several clamping blocks 31 and a collar 32. The clamping blocks 31 are arranged around the periphery of the pipeline 70, the clamping ring 32 is sleeved on the periphery of the pipeline 70, and each clamping block 31 is independent from each other and is integrated through the clamping ring 32 to surround the periphery of the pipeline 70.
The inner wall of grip block 31 has the butt cambered surface, and the butt cambered surface is used for with the pipeline outer wall butt, is equipped with the rand draw-in groove 312 that is used for with rand 32 block on the butt cambered surface to make each grip block 31 connect together through rand 32. The arrangement of the clamping ring clamping groove 312 also enables the clamping ring 32 to be hidden in the clamping ring clamping groove 312 when the butt cambered surface is in butt joint with the outer wall of the pipeline, so that the interference of the clamping ring 32 is avoided.
The clamping block 31 also has an outer conical cambered surface, the outer conical cambered surface of the clamping block 31 is matched with the inner conical cambered surface of the driving sleeve 20, and the outer conical cambered surface of the clamping block 31 extends to one end, close to the driving sleeve 20, of the clamping block 31. It should be understood that each of the clamping blocks 31 has an outer conical arc surface, and the outer conical arc surfaces of the clamping blocks 31 are combined together to form a relatively complete conical arc surface, and the outer conical arc surface on each of the clamping blocks 31 is actually a part of the relatively complete conical arc surface.
Each clamping block 31 is located radially between the outer wall of the pipe and the sleeve 12 along the pipe 70, and one end of each clamping block 31 is adapted to abut the valve connector 10.
The rear abutment 40 is fitted around the outer periphery of the pipe 70 and is slidable in the axial direction of the pipe 70.
The sealing ring 50 is sleeved between the outer wall of the pipe and the sleeve 12 along the radial direction of the pipe 70, and the sealing ring 50 is positioned between the driving sleeve 20 and the rear abutting piece 40 along the axial direction of the pipe 70. Of course, the radial dimension of the seal ring 50 must be adapted to the radial dimension of the inner ring of the sleeve 12. Since there may be a gap between the valve connector 10 and the end of the pipe 70 to allow air leakage, the valve connector 10 is provided with a sleeve 12 to cover the end of the pipe 70, and the packing 50 is deformed by pressing to seal the sleeve 12.
The seal driving assembly 60 is used for driving the valve connecting member 10 and the rear abutment member 40 to approach each other along the axial direction of the pipe 70 so that the driving sleeve 20 drives the clamping mechanism 30 to be clamped and fixed on the periphery of the pipe 70, and the rear abutment member 40 and the driving sleeve 20 press the seal ring 50, so that the seal ring 50 is radially deformed to seal the sleeve 12. The sealing driving assembly 60 may be a cylinder or a hydraulic cylinder, etc., and the cylinder is connected to the valve connecting member 10, and the piston rod is connected to the rear abutting member 40.
The embodiment of the invention provides a possible using process of the pipeline purging external plugging device, which comprises the following steps: an operator connects the valve connecting piece 10 with the valve, the clamping mechanism 30 is sleeved outside the pipeline 70 (because the clamping ring 32 is sleeved outside the pipeline 70, each clamping block 31 is clamped on the clamping ring 32, and the clamping blocks 31 cannot fall off from the pipeline 70), the driving sleeve 20 is sleeved outside the pipeline 70, the inner conical arc surface of the driving sleeve 20 is matched with the outer conical arc surface of the clamping mechanism 30, the sealing ring 50 and the rear abutting piece 40 are sleeved outside the pipeline 70, finally, the sleeve 12 of the valve connecting piece 10 is sleeved on the peripheries of the clamping mechanism 30, the driving sleeve 20 and the sealing ring 50, and one end of the clamping mechanism 30 is abutted against the valve connecting piece 10. An operator drives the sealing driving assembly 60, under the matching action of the outer cone cambered surface of the clamping block 31 and the inner cone cambered surface of the driving sleeve 20, the clamping block 31 is abutted with the valve connecting piece 10 and cannot move axially along the pipeline 70, each clamping block 31 is gathered along the radial direction of the pipeline 70, and the abutted cambered surface of the clamping block 31 is abutted with the outer wall of the pipeline to be fixed, so that the pipeline 70 is fixed by the pipeline purging external plugging device provided by the embodiment of the invention (the valve connecting piece 10 and the rear abutting piece 40 are clamped at two sides of the driving sleeve 20, the clamping mechanism 30 and the sealing ring 50 by the sealing driving assembly 60). The operator then continues to actuate the sealing drive assembly 60 to move the rear abutment 40 axially along the conduit 70 toward the drive sleeve 20, so that the rear abutment 40 and the drive sleeve 20 compress the sealing ring 50, and the sealing ring 50 is radially deformed to seal the sleeve 12, thereby sealing off the sleeve 12, which in effect completes the installation and sealing of the conduit 70 end with the external conduit purge occluder provided by the embodiments of the present invention.
The pipeline purging external plugging device provided by the embodiment of the invention is used for possibly removing the plugging of the opening end of the pipeline in the using process that: the sealing driving assembly 60 is operated reversely, so that the rear abutting part 40 is driven to move towards the opening side far away from the pipeline 70 along the axial direction of the pipeline 70, the sealing ring 50 restores and blocks the pipeline 70, the driving sleeve 20 is operated reversely to enable the driving sleeve 20 to move towards the side far away from the valve connecting piece 10, the clamping block 31 is released from tightly fixing the pipeline 70, then the valve connecting piece 10 is taken down, and the whole installation and disassembly processes do not need welding operation.
Compared with the prior art, the pipeline purging external plugging device provided by the embodiment of the invention has the advantages that the pipeline and the valve are communicated through the arrangement of the valve connecting piece, the clamping mechanism is enabled to move towards one side of the valve connecting piece through the arrangement of the driving sleeve so as to be abutted against the valve connecting piece, then under the matching action of the outer cone cambered surface and the inner cone cambered surface, all clamping blocks are gathered together along the radial direction of the pipeline, and the abutted cambered surface is abutted against and fixed with the outer wall of the pipeline, so that the fixed installation of the plugging device is realized; through setting up sealed drive assembly to the axial displacement of drive back butt piece along the pipeline makes drive cover and back butt piece extrusion sealing washer, and the radial deformation takes place for the sealing washer, thereby sealed sleeve, convenient operation saves the cost.
In some embodiments, collar 21 is an elastomeric collar structure that has a tendency to expand radially outward along conduit 70. During the process of disassembling the pipeline purging external plugging device, because the clamping ring 32 has the tendency of elastically expanding along the radial direction outside of the pipeline 70, the clamping blocks 31 are also radially dispersed along the pipeline 70 under the action of the clamping ring 32, so that the clamping mechanism 30 is convenient to disassemble.
In some embodiments, collar 32 may be a ring-shaped piece of spring steel or a ring-shaped expanding spring, which has a tendency to expand elastically outward, so as to act on each gripping block 31, causing each gripping block 31 to have a tendency to move radially outward along conduit 70.
In some embodiments, the abutment cambered surface of each clamping block 31 may have a plurality of collar clamping grooves 312 arranged at intervals along the axial direction of the pipe 70 (i.e., the axial direction of the abutment cambered surface), the clamping mechanism 30 also has a plurality of corresponding collars 32, each collar 32 corresponds to each collar clamping groove 312 one by one, and each collar 32 is clamped with the corresponding collar clamping groove 312.
In some embodiments, referring to fig. 1, 2 and 6, the seal drive assembly 60 includes a screw 61 and a first nut 62. One end of the screw 61 is connected to the valve connector 10, and the other end of the screw 61 penetrates the rear abutment member 40 in the axial direction of the duct 70 and is then screwed to the first nut 62. The first nut 62 abuts against the rear abutment 40, and the rear abutment 40 is driven to approach the valve connecting member 10 by rotating the first nut 62. In this embodiment, the first nut 62 is screwed to drive the rear abutting part 40 to approach the valve connecting member 10, so that the rear abutting part 40 extrudes and deforms the sealing ring 50 to seal the sleeve 12, which is convenient to operate.
In some embodiments, referring to fig. 1, 2 and 6, the seal driving assembly 60 further includes a second nut 63. One end of the screw 61 penetrates through the valve connector 10 and then is in threaded connection with the second nut 63, so that one end of the screw 61 is connected with the valve connector 10.
In some embodiments, referring to fig. 1, fig. 2 and fig. 6, the sealing driving assemblies 60 of the external occluder for purging a pipeline according to embodiments of the present invention have a plurality of sets, and the plurality of sets of sealing driving assemblies 60 are uniformly disposed around the periphery of the pipeline 70.
In some embodiments, referring to fig. 1 and fig. 2, a connector body 11 of an external pipeline purging occluder provided in an embodiment of the present invention includes a first flange 111, a second flange 113, and a connector barrel 112. The first flange 111 is used for installing a valve, the second flange 113 is arranged at intervals with the first flange 111 along the axial direction of the pipeline 70, and the connecting cylinder 112 is used for connecting the first flange 111 and the second flange 113. The through hole is definitely formed through the first flange 111, the second flange 113 and the connecting cylinder 112, the sleeve 12 is fixed on the second flange 113, and the seal driving assembly 60 is connected with the second flange 113.
In some embodiments, referring to fig. 1 and fig. 6, a valve mounting hole is formed on the first flange 111 of the external pipeline purging plugging device provided in the embodiments of the present invention, so as to facilitate connection between the connector body 11 and the valve. Of course, a gasket must be installed between the valve and the first flange 111.
In some embodiments, referring to fig. 4 and fig. 6, the abutting arc surface of the clamping block 31 of the pipe plugging device provided by the present invention is provided with a plurality of protruding components 311 arranged at intervals along the axial direction of the abutting arc surface, the protruding components 311 are used for enhancing the abutting force between the clamping block 31 and the outer wall of the pipe, and each protruding component 311 includes a plurality of protruding structures arranged at intervals along the circumferential direction of the abutting arc surface. Alternatively, the protruding structure may be a protruding square, a protruding pointed cone, or the like.
In some embodiments, referring to fig. 2, the present invention provides a rear abutment 40 of a pipe blanking plug comprising an abutment barrel 42 and a third flange 41. The abutment cylinder 42 is adapted to abut against the seal ring 50, and the third flange 41 is connected to the abutment cylinder 42. The other end of the screw 61 penetrates the third flange 41 in the axial direction of the pipe 70 and is screwed to the first nut 62.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. Pipeline sweeps external use plugging device, its characterized in that includes:
the valve connecting piece is used for installing a valve and comprises a connecting piece body positioned at one end of the pipeline and a sleeve connected with the connecting body, the sleeve extends along the axial direction of the pipeline and is sleeved outside the pipeline, and the connecting piece body is provided with a through hole to communicate the pipeline and the valve;
the driving sleeve is sleeved between the outer wall of the pipeline and the sleeve in the radial direction of the pipeline and can slide in the axial direction of the pipeline, the driving sleeve is provided with an inner conical cambered surface, and the large end of the inner conical cambered surface is close to one side of the valve connecting piece;
the clamping mechanism comprises a plurality of clamping blocks arranged around the periphery of the pipeline and a clamping ring used for being sleeved on the outer wall of the pipeline, and the outer wall of each clamping block is provided with an outer cone cambered surface matched with the inner cone cambered surface and a butt cambered surface used for being abutted against the outer wall of the pipeline; the butt arc surface is provided with a clamping ring clamping groove used for clamping with a clamping ring; each clamping block is located between the outer wall of the pipeline and the sleeve along the radial direction of the pipeline, and one end of each clamping block is used for being abutted against the valve connecting piece;
the rear butt joint piece is sleeved on the periphery of the pipeline and can slide along the axial direction of the pipeline;
the sealing ring is sleeved between the outer wall of the pipeline and the sleeve along the radial direction of the pipeline and is positioned between the driving sleeve and the rear abutting part along the axial direction of the pipeline; and
and the sealing driving assembly is used for driving the valve connecting piece and the rear abutting piece to be close to each other along the axial direction of the pipeline, so that the driving sleeve drives the clamping mechanism to be clamped and fixed on the periphery of the pipeline, and the rear abutting piece and the driving sleeve extrude the sealing ring, so that the sealing ring is radially deformed to seal the sleeve.
2. The line purging external occluder of claim 1, wherein the collar is a resilient collar structure having a tendency to expand radially outwardly of the line.
3. The external pipeline purging occluder of claim 1, wherein the sealing drive assembly comprises a screw rod and a first nut, one end of the screw rod is connected with the valve connecting piece, and the other end of the screw rod penetrates through the rear abutment member along the axial direction of the pipeline and then is in threaded connection with the first nut; the first nut is abutted to the rear abutting part, and the rear abutting part is driven to approach the valve connecting part by rotating the first nut.
4. The external pipeline purging occluder of claim 3, wherein the seal driving assembly further comprises a second nut, and one end of the screw rod is threaded through the valve connector and then connected to the second nut, so as to connect the one end of the screw rod to the valve connector.
5. The line purging external occluder of claim 4, wherein the seal drive assembly has a plurality of sets disposed uniformly around the circumference of the line.
6. The external pipeline purging stopper according to any one of claims 1-5, wherein the connector body comprises a first flange for mounting a valve, a second flange spaced from the first flange along an axial direction of the pipeline, and a connecting cylinder for connecting the first flange and the second flange; the sleeve is connected with the second flange, and the sealing driving assembly is connected with the second flange.
7. The external pipeline purging occluder of claim 6, wherein the first flange is provided with a valve mounting hole.
8. The external pipeline purging stopper according to any one of claims 1-5, wherein the abutment cambered surface is provided with a plurality of protrusion assemblies which are used for enhancing the abutment force with the outer wall of the pipeline and are arranged at intervals along the axial direction of the abutment cambered surface, and each protrusion assembly comprises a plurality of protrusion structures which are arranged at intervals along the circumferential direction of the abutment cambered surface.
9. The external pipeline purging stopper according to any one of claims 1-5, wherein the rear abutment member comprises an abutment cylinder extending into the sleeve and adapted to abut against the sealing ring, and a third flange connected to the abutment cylinder, and the other end of the threaded rod is threaded to the first nut after penetrating through the third flange in the axial direction of the pipeline.
CN202110926359.1A 2021-08-12 2021-08-12 Pipeline purges external plugging device Pending CN113623473A (en)

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CN114183621A (en) * 2021-12-13 2022-03-15 江苏联新阀门有限公司 Valve with adjustable caliber for sewage treatment pipeline

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CN104329529A (en) * 2014-11-04 2015-02-04 陈墅庚 Novel precision-type high-pressure-resistant rotary compensator
CN204267930U (en) * 2014-10-21 2015-04-15 泽尼特泵业（苏州）有限公司 A kind of direct insertion pressure piping joint
CN106195494A (en) * 2016-08-29 2016-12-07 杭州温格科技有限公司 Snap joint
CN209494998U (en) * 2018-12-28 2019-10-15 东南管阀股份有限公司 A kind of novel valve retaining connector
CN211231947U (en) * 2019-11-08 2020-08-11 南京英尼格玛工业自动化技术有限公司 External holding type sealing pipe joint

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Publication number Priority date Publication date Assignee Title
EP1033518A1 (en) * 1999-01-29 2000-09-06 Glynwed Pipe Systems Limited Pipe coupling
CN2544155Y (en) * 2001-11-12 2003-04-09 陆秀成 Clamp sleeve type extension valve for pipeline
CN1455142A (en) * 2003-04-18 2003-11-12 葛文宇 Valve, pump and pipeline connection technique
CN204267930U (en) * 2014-10-21 2015-04-15 泽尼特泵业（苏州）有限公司 A kind of direct insertion pressure piping joint
CN104329529A (en) * 2014-11-04 2015-02-04 陈墅庚 Novel precision-type high-pressure-resistant rotary compensator
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183621A (en) * 2021-12-13 2022-03-15 江苏联新阀门有限公司 Valve with adjustable caliber for sewage treatment pipeline
CN114183621B (en) * 2021-12-13 2024-05-10 江苏联新阀门有限公司 Valve based on adjustable caliber for sewage treatment pipeline

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