CN213576206U

CN213576206U - Outward expansion type sealing device

Info

Publication number: CN213576206U
Application number: CN202022621129.8U
Authority: CN
Inventors: 洪浩瀚; 张儒锋; 林立鹏; 许镜河; 余迪超; 王勇煌; 李波; 姜德志
Original assignee: Upton Automation Systems Guangzhou Co ltd
Current assignee: Upton Automation Systems Guangzhou Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-06-29
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an external expansion type sealing device, which comprises a sealing shell, a movable block, a plug connector and an elastic sealing ring, wherein one end of the sealing shell is provided with a movable cavity, the other end of the sealing shell is provided with a sealing end, and the plug connector is arranged at the sealing end; the elastic sealing ring is clamped between the sealing end and the plug-in connector; the movable block is movably connected in the movable cavity in a penetrating mode and can move towards the position close to or far away from the sealing end; the plug-in connector is connected to the movable block and used for extruding the elastic sealing ring after the movable block moves away from the sealing end, so that the elastic sealing ring deforms outwards. The utility model discloses an outer formula sealing device that rises, but its elastic sealing ring can produce outer formula deformation that rises after receiving the extrusion when sealed for elastic sealing ring and the inner wall in close contact with more of the examination pipeline that awaits measuring. Meanwhile, the test channel is communicated, the pipe diameter change in a certain range can be self-adapted, the operation speed is higher, and the efficiency is higher.

Description

Outward expansion type sealing device

Technical Field

The utility model relates to a pipeline sealing equipment, concretely relates to formula sealing device rises outward.

Background

At present, when the air tightness of a pipeline is tested, the end of the pipeline needs to be connected with a testing instrument, and then the pipeline needs to be ventilated and the like so as to test the air tightness of the pipeline. The existing pipeline sealing structure mainly depends on a thread matching thread seal tape or a thread matching rubber ring to seal when a pipeline is sealed, and has the defects that a large amount of time is needed for screwing the threads, when the threads of a testing head are worn or the thread machining error of a tested piece is large, the threads are not matched and cannot be screwed and sealed, and the threads must be matched for use, and one testing head can only be matched with a pipe head with one specification. And the threaded seal head can not be connected with the non-threaded pipe head, so that the adaptability is poor and the efficiency is low on the whole.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an outward expansion type sealing device, which can enable an elastic sealing ring to generate outward expansion type deformation after being extruded when being sealed, can adapt to a pipeline joint in a certain specification range, and can be used for providing power for an external air source no matter whether a pipeline is a threaded head or an unthreaded optical head.

The purpose of the utility model is realized by adopting the following technical scheme:

an outward expansion type sealing device comprises a sealing shell, a movable block, a plug connector and an elastic sealing ring, wherein a movable cavity is arranged at one end of the sealing shell, a sealing end is arranged at the other end of the sealing shell, and the plug connector is arranged at the sealing end; the elastic sealing ring is clamped between the sealing end and the plug-in connector; the movable block is movably connected in the movable cavity in a penetrating mode and can move towards the position close to or far away from the sealing end; the plug-in connector is connected to the movable block and used for extruding the elastic sealing ring after the movable block moves away from the sealing end, so that the elastic sealing ring deforms outwards.

Preferably, the outward expansion type sealing device further comprises a mounting seat, and the sealing shell is mounted on the mounting seat and arranged at an interval with the sealing seat; the end part of the movable block is connected with the mounting seat through an elastic part; the elastic component is used for providing elastic stress for enabling the movable block to move close to the sealing end.

Preferably, a through hole is formed in the sealing end and penetrates through the movable cavity, a guide column is arranged on the part, close to the sealing end, of the movable block, the guide column is movably connected in the through hole in a penetrating mode, and the plug connector is connected into the guide column through a connecting rod.

Preferably, one end of the connecting rod is provided with a limiting column, a limiting hole is formed in the guiding column, and a first limiting step is arranged on the inner wall of the limiting hole; the outer surface of the limiting column is provided with a second limiting step, and the limiting column penetrates through the limiting hole; the second limiting step is used for being abutted against the first limiting step to prevent the connecting column from being separated from the guide column.

Preferably, a first sealing ring is clamped between the outer surface of the movable block and the inner wall of the movable cavity; a second sealing ring is clamped between the outer surface of the guide column and the inner wall of the through hole; a driving channel is arranged in the movable block and penetrates into the movable cavity; the drive channel is used for introducing fluid to drive the movable block to move away from the sealing end.

Preferably, a gasket is sleeved outside the connecting rod and penetrates through the penetrating hole.

Preferably, the sealing end is provided with a pressing block, the connecting rod is connected in the pressing block in a penetrating mode, and one end of the connecting rod extends out of the pressing block and extends into the penetrating hole to be connected with the guide column; the other end of the connecting rod extends out of the pressing block and is connected with the plug-in connector; the elastic sealing ring is sleeved at the end part of the connecting rod close to the plug-in connector and clamped between the pressing block and the plug-in connector.

Preferably, the connecting rod is connected with the plug connector through a screw.

Preferably, the number of the elastic parts is four, and the four elastic parts are distributed at intervals around the circumference of the central axis of the movable block.

Preferably, the outward expansion type sealing device further comprises a driving piece, and a power output end of the driving piece is connected with the mounting seat.

Compared with the prior art, the beneficial effects of the utility model reside in that: it is when sealing up, but sealed end and bayonet joint equal cartridge are kept away from sealed end motion to the examination pipeline of awaiting measuring afterwards through the movable block to drive the bayonet joint and be close to sealed end motion, thereby extrusion elastic seal circle, elastic seal circle can receive the extrusion back and produce the formula deformation that rises outward when sealed, makes elastic seal circle and the inner wall of the examination pipeline of awaiting measuring in close contact with more, thereby improves sealing performance. The utility model discloses switch-on test pipeline when also having the pipe diameter of self-adaptation certain limit, sealed, can replace the screw thread formula sealing device of a heap different specifications, need not twist that the screw thread operating speed is fast and outside power drive makes the connection reliable with one such sealing device.

Drawings

Fig. 1 is a schematic structural view of an external expansion type sealing device of the present invention;

fig. 2 is a partial structural schematic view of the outward expansion type sealing device of the present invention;

fig. 3 is a cross-sectional view of the outward expansion type sealing device of the present invention.

In the figure: 10. sealing the housing; 11. sealing the end; 20. a movable block; 21. a guide post; 211. a limiting hole; 22. a drive channel; 23. a first seal ring; 24. a second seal ring; 25. a gasket; 30. a plug-in connector; 40. an elastic sealing ring; 50. a mounting seat; 60. a compression block; 70. a drive member; 80. an elastic member; 90. a connecting rod; 91. a limiting column.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, 2 and 3, the outward expansion type sealing device comprises a sealing housing 10, a movable block 20, a plug 30 and an elastic sealing ring 40, wherein a movable cavity is arranged at one end of the sealing housing 10, a sealing end 11 is arranged at the other end of the sealing housing 10, the plug 30 is arranged at the sealing end 11, and the elastic sealing ring 40 can be clamped between the sealing end 11 and the plug 30.

The movable block 20 is movably connected in the movable cavity in a penetrating mode, the movable block 20 can move towards the position close to or far away from the sealing end 11, the plug connector 30 is connected to the movable block 20, and the plug connector 30 can extrude the elastic sealing ring 40 after the movable block 20 moves far away from the sealing end 11 so that the elastic sealing ring 40 deforms outwards.

On the basis of the structure, use the utility model discloses an during formula sealing device rises outward, can be with sealed end 11, elastic seal ring 40 and bayonet joint 30 cartridge are in the pipeline of examination of awaiting measuring, then order about movable block 20 through external force and keep away from sealed end 11 motion towards, movable block 20 can drive bayonet joint 30 this moment and move towards being close to sealed end 11 motion, thereby the elastic seal ring 40 of extrusion centre gripping between sealed end 11 and bayonet joint 30, elastic seal ring 40 can take place deformation outwards at the extrusion in-process, make elastic seal ring 40 hug closely with the pipeline inner wall of examination of awaiting measuring, the sealed face of formation is bigger, sealed effect is better.

Further, the outward expansion type sealing device further comprises a mounting seat 50, wherein the sealing shell 10 is mounted on the mounting seat 50, and the sealing shell 10 and the sealing seat are arranged at intervals. In addition, the end of the movable block 20 is connected to the mounting seat 50 by an elastic member 80, and the elastic member 80 can provide an elastic stress under which the movable block 20 moves close to the sealing end 11.

Specifically, the mounting seat 50 is used as a mounting base, when the sealing function is performed, the mounting seat 50 can be moved integrally, so that the sealing end 11 of the sealing shell 10, the elastic sealing ring 40 and the plug 30 are all inserted into the pipe to be tested, after the sealing shell is inserted in place, the elastic part 80 is in a normal state, and the elastic stress provided enables the movable block 20 to abut against the end wall of the movable cavity. Thereafter, a further sealing action is initiated, the movable block 20 is driven to move away from the sealing end 11 by an external force, and during the movement of the movable block 20 away from the sealing end 11, the elastic component 80 is compressed, and at the same time, the plug 30 moves towards the sealing end 11, so that the elastic sealing ring 40 deforms outwards. After the sealing test is completed, the elastic member 80 is restored to restore the movable block 20 by removing the power applied to the movable block 20.

Furthermore, a through hole may be further disposed in the sealing end 11, the through hole penetrates to the movable chamber, correspondingly, a guiding column 21 is disposed at a portion of the movable block 20 close to the sealing end 11, the guiding column 21 is movably inserted into the through hole, and the plug 30 may be connected to the guiding column 21 through a connecting rod 90. So, when the movable block 20 moved, guide post 21 and cross-under hole sliding fit, can guide the stable motion of movable block 20, and sealed process is more stable. The plug 30 is connected with the guide post 21 through the connecting rod 90, so that a certain interval is kept between the plug 30 and the sealing end 11, the movement of the plug 30 is facilitated, the elastic sealing ring 40 generates a relatively large deformation amount, and the sealing area is larger.

More specifically, the one end of above-mentioned connecting rod 90 can be equipped with spacing post 91, correspond and be equipped with spacing hole 211 in guide post 21, be equipped with first spacing step on the inner wall of spacing hole 211, the surface of spacing post 91 is equipped with the spacing step of second, when assembly connecting rod 90 and movable block 20, can cross-under spacing post 91 in spacing hole 211, and the spacing step of second can cross-under spacing post 91 to spacing hole 211 back with first spacing step butt, in order to prevent spliced pole and guide post 21 and break away from, so alright accomplish the assembly. In addition, the limiting hole 211 can provide a certain moving space, when the movable block 20 is reset, the limiting column 91 can move relative to the limiting hole 211, and the plug 30 has a certain buffering space to limit the movement of the plug 30 away from the sealing end 11.

Of course, the fitting of the position-limiting columns 91 with the position-limiting holes 211 can also guide the stable movement of the plug 30.

Specifically, in this embodiment, a first sealing ring 23 may be clamped between the outer surface of the movable block 20 and the inner wall of the movable chamber, and similarly, a second sealing ring 24 may be clamped between the outer surface of the guide post 21 and the inner wall of the through hole, so that the first sealing ring 23 and the second sealing ring 24 may form a relatively sealed space in the movable chamber. On the basis of the structure, the driving channel 22 is arranged in the movable block 20, the driving channel 22 penetrates into the movable cavity, fluid is introduced into the driving channel 22, and enters the movable cavity, so that the movable block 20 can be driven to move away from the sealing end 11.

Of course, in the present application, an air nozzle may be disposed at the end of the driving channel 22, and air may be introduced into the driving channel 22 through the air nozzle, so that air may be introduced more conveniently.

Further, still can be equipped with gasket 25 at connecting rod 90 outside cover, gasket 25 can pass and connect in the cross-under hole, and after the motion was kept away from sealed end 11 towards the movable block 20 promptly, movable block 20 alright drive connecting rod 90 linkage, and then pulling bayonet joint 30 is close to sealed end 11, and at this moment, gasket 25 can balance the drive power of movable block 20, makes the atress more steady.

Further, a pressing block 60 may be further disposed at the sealing end 11, the connecting rod 90 is inserted into the pressing block 60, one end of the connecting rod 90 extends out from the pressing block 60 and into the insertion hole to be connected to the guiding column 21, and the other end of the connecting rod 90 extends out from the pressing block 60 and is connected to the plug 30. The elastic sealing ring 40 is sleeved on the end of the connecting rod 90 close to the plug 30 and clamped between the pressing block 60 and the plug 30. Thus, when the plug 30 moves towards the sealing end 11, the elastic sealing ring 40 can be extruded by the plug 30 and moves towards the pressing block 60, the contact surface between the elastic sealing ring 40 and the pressing block 60 is relatively large, the deformation amount generated is relatively uniform, and the formed sealing structure is more stable.

Of course, the connecting rod 90 and the plug 30 in the embodiment can be connected by screws, so that the connecting rod is convenient to disassemble and assemble and is more convenient to replace.

Preferably, there are four elastic members 80, and four elastic members 80 are circumferentially distributed around the central axis of the movable block 20 at intervals, that is, the movable block 20 can be connected with the mounting seat 50 through four elastic members 80 which are uniformly distributed, so that the stress is more uniform. While the resilient member 80 in this embodiment may alternatively be a spring as in the prior art,

preferably, the outward expansion type sealing device further comprises a driving part 70, a power output end of the driving part 70 is connected with the mounting seat 50, the driving part 70 can be specifically selected as an air cylinder in the prior art, a piston rod of the air cylinder can be connected with the mounting seat 50, the piston rod of the air cylinder can stretch and retract to drive the mounting seat 50 to move, and then the sealing shell 10, the elastic sealing ring 40 and the plug 30 which are based on the mounting seat 50 are driven to move integrally, so that a pipeline to be tested is plugged or withdrawn, and the operation is more convenient.

While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. An outward expansion type sealing device is characterized by comprising a sealing shell, a movable block, a plug connector and an elastic sealing ring, wherein a movable cavity is arranged at one end of the sealing shell, a sealing end is arranged at the other end of the sealing shell, and the plug connector is arranged at the sealing end; the elastic sealing ring is clamped between the sealing end and the plug-in connector; the movable block is movably connected in the movable cavity in a penetrating mode and can move towards the position close to or far away from the sealing end; the plug-in connector is connected to the movable block and used for extruding the elastic sealing ring after the movable block moves away from the sealing end, so that the elastic sealing ring deforms outwards.

2. An expanding seal as claimed in claim 1, further comprising a mounting block, said seal housing being mounted on said mounting block and spaced therefrom; the end part of the movable block is connected with the mounting seat through an elastic part; the elastic component is used for providing elastic stress for enabling the movable block to move close to the sealing end.

3. The expanding seal device according to claim 2, wherein a through hole is provided in the seal end, the through hole penetrates to the movable chamber, a guide post is provided on a portion of the movable block near the seal end, the guide post movably penetrates into the through hole, and the plug is connected to the guide post through a connecting rod.

4. The expanding seal device according to claim 3, wherein one end of the connecting rod is provided with a limiting post, the guiding post is provided with a limiting hole, and the inner wall of the limiting hole is provided with a first limiting step; the outer surface of the limiting column is provided with a second limiting step, and the limiting column penetrates through the limiting hole; the second limiting step is used for being abutted against the first limiting step to prevent the connecting column from being separated from the guide column.

5. An expandable sealing device as claimed in claim 3, wherein a first seal ring is sandwiched between the outer surface of the movable block and the inner wall of the movable chamber; a second sealing ring is clamped between the outer surface of the guide column and the inner wall of the through hole; a driving channel is arranged in the movable block and penetrates into the movable cavity; the drive channel is used for introducing fluid to drive the movable block to move away from the sealing end.

6. The rising seal of claim 5, wherein the connecting rod is externally fitted with a gasket, said gasket being threaded into said through-bore.

7. An expanding seal as claimed in any one of claims 3 to 6, wherein the sealing end is provided with a hold-down block, the connecting rod passes through the hold-down block, and one end of the connecting rod extends out of the hold-down block and into the pass-through hole to connect with the guide post; the other end of the connecting rod extends out of the pressing block and is connected with the plug-in connector; the elastic sealing ring is sleeved at the end part of the connecting rod close to the plug-in connector and clamped between the pressing block and the plug-in connector.

8. An expanding seal according to claim 7, characterised in that the connecting rod is screwed to the spigot.

9. An expanding seal according to any one of claims 2-6, characterised in that there are four resilient members circumferentially spaced around the central axis of the movable mass.

10. An expanding seal as claimed in any one of claims 2-6, further comprising a drive member, a power take-off of said drive member being connected to said mounting block.