CN104949800B - Seal leak-checking apparatus - Google Patents
Seal leak-checking apparatus Download PDFInfo
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- CN104949800B CN104949800B CN201410118982.4A CN201410118982A CN104949800B CN 104949800 B CN104949800 B CN 104949800B CN 201410118982 A CN201410118982 A CN 201410118982A CN 104949800 B CN104949800 B CN 104949800B
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Abstract
Leak-checking apparatus is sealed the invention discloses one kind, including：General assembly bottom plate, upper positioner, lower positioner, first sealing device and the second sealing device, upper positioner include：Lower pressure actuator, top board and more than one locating dowel, lower positioner include：Lower positioning seat and locating piece, first sealing device include：First pressure performs device, elastic component, adapter sleeve, backing pin, two tighten up block, guide sleeve and seal bar, first pressure performs device can drive seal bar to move back and forth.Seal bar front end is provided with the first sealing ring, and second sealing device includes：Second pressure performs device, contiguous block and floating turnover panel, floating turnover panel are hinged with contiguous block；The front side of floating turnover panel, which is provided with seal groove, seal groove, is provided with the second sealing ring；The present invention is advantageous in that：First sealing device, the second sealing device can be effectively sealed to hole to be checked, above smart structural design, it is easy to implement, and sealing effectiveness is reliable.
Description
Technical field
The present invention relates to a kind of detection means, and in particular to one kind sealing leak-checking apparatus.
Background technology
Part to be checked 100 shown in reference picture 1, the part 100 to be checked is manufactured by casting, and is needed after production is finished
Pressure detecting is carried out to the part 100 to be checked, lacking for its quality is influenceed to ensure that it is not produced during casting
Fall into, need three that treat zero-detection part 100 holes 101,102,103 to be checked to be sealed when carrying out pressure detecting, do not have still now
There is a kind of device that can be sealed and then be leaked hunting to it well.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of suitable for the close of part 100 shown in Fig. 1
Seal leak-checking apparatus.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
Leak-checking apparatus is sealed, including：General assembly bottom plate, upper positioner, lower positioner, first sealing device and second are close
Seal apparatus, upper positioner includes：Lower pressure actuator, top board and more than one locating dowel, lower pressure actuator are set
It is driven to move up and down in the top of top board, locating dowel is fixed at the bottom surface of top board；Lower positioner includes：Lower positioning
Seat and locating piece, lower positioning seat be fixed on general assembly plate top surface and positioned at top board lower section, locating dowel be located at lower positioning seat and
Between top board, locating piece is arranged on the top surface of lower positioning seat；First sealing device includes：First pressure performs device, elasticity
Part, adapter sleeve, backing pin, two tighten up block, guide sleeve and seal bar；First pressure performs device includes：First pressure cylinder, first
Piston and the first drive link, are formed with a mounting hole on rear side of adapter sleeve, the front end of the first drive link by stretch into mounting hole with
Adapter sleeve is constituted and is fixedly connected, and the front end of the first drive link is provided with a groove, and elastic component part is arranged in the groove, connects
Set front end is formed with an open trough, and the cell wall of open trough is provided with a set hole, and backing pin includes：Plunger and pin rod, guide sleeve bag
Include：Cannula portion and receiving portion, guide sleeve are provided with：One through its cannula portion and receiving portion receiving opening, one extend transversely through
The shaft hole of receiving opening；Tighten up block to be connected with guide sleeve rotation by the rotating shaft being provided with shaft hole, the rotating shaft for tightening up block is hung down
Directly in seal bar, guide sleeve rear end part is arranged in the open trough of adapter sleeve；Seal bar through receiving hole and with guide sleeve structure
Into being slidably connected, seal bar reels hole provided with a spacing hole and one, and the one end for tightening up block is arranged at and reeled in hole, the other end
Expose adapter sleeve, the pin rod of backing pin respectively by size be all higher than it set hole and spacing hole pass through adapter sleeve and seal bar, it is close
The front end that envelope bar stretches out guide sleeve is formed with step projection and provided with end cover and sealing ring, and it is raised that sealing ring is enclosed on the step
Rear side；Second sealing device includes：Second pressure performs device, contiguous block and floating turnover panel；Second pressure performs device bag
Include：Second pressure cylinder, second piston and the second drive link, second piston, the second drive link are integrally formed, and contiguous block is fixedly mounted
In the front end of the second drive link, floating turnover panel is hinged with contiguous block；The front side of floating turnover panel is provided with seal groove, seal groove and is provided with
Second sealing ring.
Further, first sealing device also includes：Pedestal, connecting pole, guide holder and guide plate, guide holder, the first pressure
Power cylinder is fixedly connected with pedestal, and the bottom of backing pin is embedded in the guide groove of guide holder formation；Guide plate is solid by connecting pole
The front of first pressure cylinder is scheduled on, the cannula portion of guide sleeve, which passes through guide plate and constituted therewith, to be slidably connected.
Further, first sealing device also includes：Two fixed blocks and a fixed board, fixed block by with pedestal
The left and right sides for being arranged on first pressure cylinder is fixedly connected with, fixed board is arranged on first pressure by being fixedly connected with fixed block
The rear side of cylinder, first pressure cylinder is fixed on above pedestal by being directly fixedly connected with fixed board.
Further, elastic component is helical spring, and its one end withstands the first drive link, and the other end is withstood after seal bar
End.
Further, the second drive link telescopic direction intersects with horizontal plane, the first drive link telescopic direction parallel to
Horizontal plane.
Further, first pressure cylinder and second pressure cylinder are oil hydraulic cylinder or pneumatic cylinder.
The present invention is advantageous in that：Upper positioner, lower positioner can constitute effective fixation to part 100,
First sealing device can stretch into the first sealing ring reverse movement behind hole 101 to be sealed makes its close so as to be tensioned the first sealing ring
The hole wall in contact hole 101 to be sealed realize sealing；Second sealing device can be by the adaptive adjustment angle pair of floating turnover panel
It is obliquely installed hole 102,103 to be checked to be effectively sealed, above smart structural design, it is easy to implement, and sealing effectiveness is reliable.
Brief description of the drawings
Fig. 1 is the structural representation of part to be checked；
Fig. 2 is the structural representation of a preferred embodiment of the sealing leak-checking apparatus of the present invention（Execution machine is pushed in figure
Structure is not shown）；
Fig. 3 is the structural representation at embodiment illustrated in fig. 2 another visual angle after part to be checked is mounted with；
Fig. 4 is the structural representation of first sealing device in embodiment illustrated in fig. 2；
Fig. 5 is the first sealing device partial perspective cross-sectional structural representation shown in Fig. 4；
Fig. 6 is the first sealing device part planar section view structural scheme of mechanism shown in Fig. 4；
Fig. 7 is the exploded perspective view of the first sealing device part-structure shown in Fig. 4；
Fig. 8 is to tighten up block, the structural representation of seal bar in the first sealing device shown in Fig. 4；
Fig. 9 is the structural representation of the second sealing device in embodiment illustrated in fig. 2.
Embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
Reference picture 2 is to shown in Fig. 9, and sealing leak-checking apparatus 200 of the invention includes：First sealing device 20, second is sealed
Device 30, upper positioner 40, lower positioner 50 and general assembly bottom plate 60.
Wherein, general assembly bottom plate 60 is used to make first sealing device 20, the second sealing device 30, lower positioner 50 constitute one
Individual entirety, they are each attached on general assembly bottom plate 60.
Upper positioner 40 includes：Lower pressure actuator（Not shown in figure）, top board 401 and more than one locating dowel
402, the top that lower pressure actuator is arranged on top board 401 drives it to move up and down, and locating dowel 402 is fixed on top board 401
Bottom surface at；Lower positioner 50 includes：Lower positioning seat 501 and locating piece 502, lower positioning seat 501 are fixed on general assembly bottom plate 60
Top surface and the lower section for being located at top board 401, locating dowel 402 are located between lower positioning seat 501 and top board 401, and locating piece 502 is set
Put the top surface in lower positioning seat 501.
So as shown in Fig. 2 when lower pressure actuator driving top board 401 is moved down, locating dowel 402 is contacted
The top of part 100 to be checked, the bottom that lower positioning seat 501 contacts part 100 to be checked constitutes the fixation of vertical direction to it, positioning
Block 502 by with the spacing position for fixing its horizontal direction of the peripheral contact of part 100 to be checked.As a kind of preferred scheme, push
Executing agency can be oil cylinder or cylinder assembly with cantilever design.
Reference picture 2 is to shown in Fig. 8, and first sealing device 20 includes：First pressure performs device 21, elastic component 22, connection
Set 23, backing pin 24, two tighten up block 25, guide sleeve 26 and seal bar 27.
Wherein, first pressure performs device 21 is main power source, and every other mechanism performs dynamic under its driving
Make, specifically, pressure chamber, the pressure actuator are formed with the first pressure cylinder 211（Do not marked in figure）Including one
Body formed：First drive link 212 and first piston 213, the first piston 213 are arranged in the pressure chamber, and described
The first pressure cylinder 211 is stretched out in the front end of one drive link 212 by what the casing wall of first pressure cylinder 211 was provided with by hole,
First drive link 212 is stretched with the pressure change of the both sides of first piston 213 in the first pressure cylinder 211
Contracting.
Preferably, first pressure cylinder 211 is one kind in cylinder or oil cylinder.
The rear side of adapter sleeve 23 is formed with a mounting hole 233, and the front end of the first drive link 212 is by stretching into mounting hole and company
Female connector 23 is constituted and is fixedly connected.So, the action of the first drive link 212 is just directly passed to adapter sleeve 23.
The front end of adapter sleeve 23 is formed with an open trough 231, and the cell wall of open trough 231 is provided with a set hole 232.Open trough
231 effect is the rear end part of receiving seal bar 27 and guide sleeve 26 and certain position-limiting action is constituted to guide sleeve 26.
Preferably, set hole 232 is a mounting hole.
The effect of guide sleeve 26 is to install seal bar 27 and tightens up block 25 and them is interacted.Specifically, it is oriented to
Set 26 includes：Cannula portion 261 and receiving portion 262, and be provided with：One receiving opening through its cannula portion 261 and receiving portion 262
263rd, one extend transversely through receiving opening 263 shaft hole 264.The rear end part of guide sleeve 26 is arranged on the open trough of adapter sleeve 23
In 231, and composition is slidably connected therewith, i.e., guide sleeve 26 is arranged in adapter sleeve 23 by the way that its rear end part is telescopic.Make
To be preferred, shaft hole 264 is a mounting hole.
Seal bar 27 reels hole 272 provided with a spacing hole 271 and one, and it passes through receiving opening 263 and and guide sleeve
26 compositions are slidably connected.I.e. seal bar 27 is arranged in guide sleeve 26 by the way that receiving hole is telescopic, and guide sleeve 26 is to seal bar
27 play guide effect, under the limitation of receiving hole, and seal bar 27 can stretch along the longitudinal direction.Seal bar 27 stretches out guide sleeve 26
Front end be formed with step projection 273 and provided with the sealing ring 275 of end cover 274 and first, the first sealing ring 275 is enclosed on this
The rear side of rank projection 273.
Tighten up block 25 to be connected with the rotation of guide sleeve 26 by the rotating shaft 251 being provided with shaft hole 264, tighten up one end of block 25
It is arranged at and reels in hole 272, the other end exposes adapter sleeve 23.The rotating shaft 251 of block 25 is tightened up perpendicular to seal bar 27.Such one
Come, tighten up block 25 and a kind of leverage is constituted by rotating shaft 251, adapter sleeve 23 and seal bar 27 by respectively with its two end in contact
Transmission is realized, adapter sleeve 23, which is oppositely oriented when set 26 is moved forward, promotes the one end for tightening up block 25 it is rotated and is made its other end
Driving seal bar 27 is oppositely oriented set 26 and is moved rearwards by.
Backing pin 24 includes：Plunger 241 and pin rod 242, plunger 241 are arranged on the outside of adapter sleeve 23, and pin rod 242 leads to respectively
Cross size be all higher than it set hole 232 and spacing hole 271 pass through adapter sleeve 23 and seal bar 27.The effect of backing pin 24 is, leads to
Crossing pin rod 242, adapter sleeve 23 and seal bar 27 is constituted in the longitudinal direction relative spacing, makes them in the phase of fore-and-aft direction
Displacement is limited in certain limit, it also has the effect for being oriented to and being driven in addition.
The front end of first drive link 212 is arranged in the groove provided with a groove, the part of elastic component 22, and it is passed first
Press an elastic force between entirety and seal bar 27 that lever 212 and adapter sleeve 23 are constituted, seal bar 27 is had away from institute
State the first drive link 212 and adapter sleeve 23 and the trend for forward extending out guide sleeve 26.Preferably, elastic component 22 is a spiral shell
Spring is revolved, its one end withstands first drive link 212, and the other end withstands the rear end of the seal bar 27.
In the present embodiment, when the drive connection of first pressure performs device 21 covers 23 forward, in backing pin 24 and elastic component
In the presence of 22, adapter sleeve 23, backing pin 24, two tighten up the overall forward movement that block 25, guide sleeve 26, seal bar 27 are constituted,
When being moved to certain position, guide sleeve 26 stops travelling forward and adapter sleeve 23 is continued to move along and is driven and is tightened up 25 turns of block
It is dynamic so that seal bar 27 is reclaimed, realize the tensioning of raised 273 pair of first sealing ring 275 of step.When that need not seal, first
The drive connection of pressure performs device 21 set 23 is moved backward, and seal bar 27 is after exit aperture, and elastic component 22 can reset it.
As a kind of preferred scheme, for the movement of backstop guide sleeve 26 forward, first sealing device 20 also includes：Pedestal
281st, connecting pole 282, guide holder 283 and guide plate 284, guide holder 283, first pressure cylinder 211 are fixed with pedestal 281 to be connected
Connect, the bottom of backing pin 24 is embedded in the guide groove 283a of the formation of guide holder 283；Guide plate 284 is fixed on by connecting pole 282
The front of first pressure cylinder 211, the cannula portion 261 of guide sleeve 26, which passes through guide plate 284 and constituted therewith, to be slidably connected.Guide sleeve
26 when moving forward, and guide plate 284 only allows cannula portion 261 to pass through, and receiving portion 262 is then limited, so when receiving portion 262
When touching 284 back end surface of guide plate, guide sleeve 26 is overall to be limited, it is impossible to moved further along.
As further preferred scheme, first sealing device 20 also includes：Two fixed blocks 285 and a fixed board
286, fixed block 285 is arranged on the left and right sides of first pressure cylinder 211 by being fixedly connected with pedestal 281, and fixed board 286 leads to
The rear side for being fixedly connected with fixed block 285 and being arranged on first pressure cylinder 211 is crossed, first pressure cylinder 211 is stood by direct with fixed
Plate 286 is fixedly connected and is fixed on the top of pedestal 281.Such be advantageous in that avoids carrying out from the side wall of first pressure cylinder 211
It is fixed.
Preferably, in order that transmission uniformity, two are tightened up block 25, adapter sleeve 23 and seal bar 27 and they
The part of contact is symmetrically arranged.
Shown in reference picture 9, the second sealing device 30 includes：Second pressure performs device 31, contiguous block 32 and floating turnover panel
33；Second pressure performs device 31 includes：Second pressure cylinder 311, second piston (not shown) and the second drive link 312,
Second piston, the second drive link 312 are integrally formed, and contiguous block 32 is fixedly mounted on the front end of the second drive link 312, floating turnover panel
33 are hinged with contiguous block 32；The front side of floating turnover panel 33, which is provided with seal groove 331, seal groove 331, is provided with the second sealing ring（In figure
It is not shown）.
Preferably, adjustment block 34 is provided between contiguous block 32 and floating reprint 33, the adjustment block 34 can adjust
Be arranged on contiguous block 32 at, floating turnover panel 33 by be hinged with adjustment block 34 so that with contiguous block 32 constitute be hinged, so set
Meter is advantageous in that the position that can finely tune floating turnover panel 33 by adjustment block 24 makes its seal groove 331 be accurately aimed at needing sealing
Hole to be checked 102,103.
As a kind of preferred scheme, second pressure cylinder 311 is one kind in oil hydraulic cylinder or pneumatic cylinder.
It should be noted is that, in the above description, the either sealing device of first sealing device 20 or second
30, the concept of " preceding " and " rear " described in them is as follows, is forward, away from it for backward close to the side of lower positioning seat 501.
This be only the application in order to succinctly and clearly be stated and be illustrated, it can not be limited described in claims hereof
Substantive scheme.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent substitution or equivalent transformation
Technical scheme, all falls within protection scope of the present invention.
Claims (6)
1. leak-checking apparatus is sealed, including：General assembly bottom plate, upper positioner and lower positioner, the upper positioner include：
Lower pressure actuator, top board and more than one locating dowel, the lower pressure actuator are arranged on the top of the top board
It is driven to move up and down, the locating dowel is fixed at the bottom surface of the top board；The lower positioner includes：Lower positioning seat
And locating piece, the lower positioning seat be fixed on the general assembly plate top surface and positioned at the top board lower section, the locating dowel
Between the lower positioning seat and top board, the locating piece is arranged on the top surface of the lower positioning seat；It is characterized in that：Institute
Stating sealing leak-checking apparatus also includes：First sealing device and the second sealing device, the first sealing device include：First pressure
Performs device, elastic component, adapter sleeve, backing pin, two tighten up block, guide sleeve and seal bar；The first pressure performs device bag
Include：A mounting hole is formed with rear side of first pressure cylinder, first piston and the first drive link, the adapter sleeve, described first passes
The front end of lever is fixedly connected by stretching into the mounting hole with adapter sleeve composition, and the front end of first drive link is provided with
One groove, the elastic component part is arranged in the groove, and the adapter sleeve front end is formed with an open trough, the opening
The cell wall of groove includes provided with a set hole, the backing pin：Plunger and pin rod, the guide sleeve include：Cannula portion and receiving portion, institute
Guide sleeve is stated to be provided with：One through its cannula portion and receiving portion receiving opening, one extend transversely through turning for the receiving opening
Axis hole；The block of tightening up is connected by the rotating shaft being provided with the shaft hole with guide sleeve rotation, described to tighten up turning for block
Axle is arranged in the open trough of the adapter sleeve perpendicular to the seal bar, the guide sleeve rear end part；The seal bar is worn
Cross the receiving opening and constituted with the guide sleeve and is slidably connected, the seal bar is reeled provided with a spacing hole and one
Hole, described one end for tightening up block be arranged at it is described reel in hole, the other end exposes the adapter sleeve, the pin rod difference of the backing pin
By size be all higher than it the set hole and spacing hole pass through the adapter sleeve and seal bar, the seal bar stretch out described in lead
Step projection is formed with to the front end of set and provided with end cover and the first sealing ring, and it is convex that first sealing ring is enclosed on the step
The rear side risen；Second sealing device includes：Second pressure performs device, contiguous block and floating turnover panel；The second pressure
Performs device includes：Second pressure cylinder, second piston and the second drive link, the second piston, the second drive link are integrally formed,
The contiguous block is fixedly mounted on the front end of second drive link, and the floating turnover panel is hinged with the contiguous block；It is described floating
The front side of dynamic turnover panel, which is provided with seal groove, the seal groove, is provided with the second sealing ring.
2. sealing leak-checking apparatus according to claim 1, it is characterised in that the first sealing device also includes：Pedestal,
Connecting pole, guide holder and guide plate, the guide holder, first pressure cylinder are fixedly connected with the pedestal, the bottom of the backing pin
End is embedded in the guide groove of the guide holder formation；The guide plate is fixed on the first pressure cylinder by the connecting pole
Front, the cannula portion of the guide sleeve is through the guide plate and composition is slidably connected therewith.
3. sealing leak-checking apparatus according to claim 2, it is characterised in that the first sealing device also includes：Two
Fixed block and a fixed board, the fixed block are arranged on a left side for the first pressure cylinder by being fixedly connected with the pedestal
Right both sides, the fixed board is arranged on the rear side of the first pressure cylinder, described by being fixedly connected with the fixed block
One pressure cylinder is fixed on by direct be fixedly connected with the fixed board above the pedestal.
4. sealing leak-checking apparatus according to claim 1, it is characterised in that the elastic component is helical spring, its one end
First drive link is withstood, the other end withstands the rear end of the seal bar.
5. sealing leak-checking apparatus according to claim 1, it is characterised in that the second drive link telescopic direction and level
Face, which is tilted, intersects, and the first drive link telescopic direction is parallel to horizontal plane.
6. the sealing leak-checking apparatus according to claim 1 to 5 any one, it is characterised in that the first pressure cylinder and
Second pressure cylinder is oil hydraulic cylinder or pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410118982.4A CN104949800B (en) | 2014-03-27 | 2014-03-27 | Seal leak-checking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410118982.4A CN104949800B (en) | 2014-03-27 | 2014-03-27 | Seal leak-checking apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104949800A CN104949800A (en) | 2015-09-30 |
| CN104949800B true CN104949800B (en) | 2017-09-19 |
Family
ID=54164628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410118982.4A Active CN104949800B (en) | 2014-03-27 | 2014-03-27 | Seal leak-checking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104949800B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422905B (en) * | 2015-12-22 | 2017-08-25 | 中国计量大学 | A kind of end cover with stopping function |
| CN106286003B (en) * | 2016-08-05 | 2018-09-28 | 安徽江淮汽车集团股份有限公司 | plugging device |
| CN108076659B (en) * | 2017-11-10 | 2020-11-10 | 苏州富强科技有限公司 | A microscope carrier that is used for special-shaped components and parts high pressure water tightness function tester |
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| CN200996884Y (en) * | 2006-12-14 | 2007-12-26 | 重庆宗申技术开发研究有限公司 | Fast sealer of air inlet and outlet for engine |
| CN101876578A (en) * | 2009-04-28 | 2010-11-03 | 沈阳新松机器人自动化股份有限公司 | Sealing structure of automatic transmission clutch shell sealing tester |
| CN102297751A (en) * | 2011-08-31 | 2011-12-28 | 宁波志清实业有限公司 | Air tightness detection device for high-pressure opened liquefied petroleum gas cylinder valve |
| CN202547872U (en) * | 2012-04-25 | 2012-11-21 | 成都东方仪器有限公司 | Rapid leakage detection fixture |
| CN103217259A (en) * | 2013-03-22 | 2013-07-24 | 伟成金属制品有限公司 | Pressure seal test machine |
| CN203824706U (en) * | 2014-03-27 | 2014-09-10 | 南京泉峰汽车精密技术有限公司 | Sealing leak hunting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3082370B2 (en) * | 1991-11-29 | 2000-08-28 | スズキ株式会社 | Pressure leak tester |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200996884Y (en) * | 2006-12-14 | 2007-12-26 | 重庆宗申技术开发研究有限公司 | Fast sealer of air inlet and outlet for engine |
| CN101876578A (en) * | 2009-04-28 | 2010-11-03 | 沈阳新松机器人自动化股份有限公司 | Sealing structure of automatic transmission clutch shell sealing tester |
| CN102297751A (en) * | 2011-08-31 | 2011-12-28 | 宁波志清实业有限公司 | Air tightness detection device for high-pressure opened liquefied petroleum gas cylinder valve |
| CN202547872U (en) * | 2012-04-25 | 2012-11-21 | 成都东方仪器有限公司 | Rapid leakage detection fixture |
| CN103217259A (en) * | 2013-03-22 | 2013-07-24 | 伟成金属制品有限公司 | Pressure seal test machine |
| CN203824706U (en) * | 2014-03-27 | 2014-09-10 | 南京泉峰汽车精密技术有限公司 | Sealing leak hunting device |
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| Publication number | Publication date |
|---|---|
| CN104949800A (en) | 2015-09-30 |
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Address after: 211106 Jiangning economic and Technological Development Zone, Jiangsu, general Avenue, No. 159, No. Applicant after: Nanjing Quanfeng auto precision technology Limited by Share Ltd Address before: 211106 Jiangning economic and Technological Development Zone, Jiangsu, general Avenue, No. 159, No. Applicant before: NANJING QUANFENG AUTOMOBILE PRECISION TECHNOLOGY CO., LTD. |
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