CN105047521B - Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum - Google Patents
Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum Download PDFInfo
- Publication number
- CN105047521B CN105047521B CN201510605489.XA CN201510605489A CN105047521B CN 105047521 B CN105047521 B CN 105047521B CN 201510605489 A CN201510605489 A CN 201510605489A CN 105047521 B CN105047521 B CN 105047521B
- Authority
- CN
- China
- Prior art keywords
- mass spectrum
- vacuum
- plugging plate
- adjust bar
- longitudinally adjust
- 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.)
- Active
Links
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a mass spectrometer for replacing an ion source by maintaining vacuum condition in mass spectrum. The mass spectrometer comprises an ionization chamber, a mass spectrum generation chamber and a vacuum sealing interface component, and the vacuum sealing interface component is of a pipe structure provided with openings at the two ends; the ionization chamber, the mass spectrum generation chamber and the vacuum sealing interface component are connected in series in a sealed mode for forming a channel which allows ions to pass through; a partition plate is arranged inside the pipe structure of the vacuum sealing interface component, and a penetrating sealing port is formed in the middle of the partition plate; the vacuum sealing interface component further comprises a sealing plate and a driving component, the driving component drives the sealing plate to move to the sealing port, and the sealing port is sealed under the negative pressure through the sealing plate. According to the mass spectrometer, under the condition that the damage degree of the indoor vacuum state is reduced to the greatest extent, the detachment and installation of the ion source are achieved; in addition, after the ion source is replaced, only the vacuum of the area where the ion source is located needs to be vacuumized, the area is small in volume, the vaccumizing time is remarkably shortened, and the production efficiency is improved.
Description
Technical field
The present invention relates to mass spectrometry art, and in particular to one kind keeps changing ionogenic matter under mass spectrum internal vacuum condition
Spectrometer.
Background technology
During continuous operation, ion source is easily damaged on-line mass spectroscopy instrument, needs to change, dismounts ion source, so as to
Ion source is repaired or replaced.In the past when ion source is changed, it is necessary to have a power failure；Destroy in mass spectrum during changeing
The vacuum state in portion, makes the pressure inside mass spectrum return to normal pressure；After ion source is reinstalled and finished, then again to mass spectrograph
Evacuation, vacuum is often time-consuming longer, has had a strong impact on the use aborning of on-line mass spectroscopy instrument.
The content of the invention
To solve the above problems, the invention provides a kind of keep changing ionogenic mass spectrum under mass spectrum internal vacuum condition
Instrument, in order to reduce mass spectrum and be damaged degree of the indoor vacuum state when ion source is dismounted occurs.
The invention discloses a kind of keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that
There is room and vacuum closure interface module including ionization chamber, mass spectrum, the vacuum closure interface module is the pipeline of both ends open
Structure；Seal between the ions into channel of the ion outlet passage, vacuum closure interface module and mass spectrum generation room of ionization chamber
Concatenation；Dividing plate is set in the pipeline of the vacuum closure interface module, the closure mouth of insertion is provided with the middle part of dividing plate；
The vacuum closure interface module also includes plugging plate and drive component, and the drive component drives the plugging plate
It is moved at the closure mouth, the plugging plate blocks under negative pressure the closure mouth.
The drive component includes：Longitudinally adjust bar and guidance set；
Described longitudinally adjust bar one end is extend in the pipeline, and connects the guidance set in the end；
The guidance set, for guiding the plugging plate being moved upward to institute perpendicular to the side of the longitudinally adjust bar
State at closure mouth.
One end that the longitudinally adjust bar is extend in the pipeline is provided with the second through hole；
The guidance set includes screw rod, and screw rod is transversely to the machine direction adjusting rod, passes through from the second through hole, installed in longitudinal tune
On pole；
The plugging plate is fixed on one end of screw rod.
The vacuum closure interface module also includes：Back-moving spring, the back-moving spring is enclosed within plugging plate and longitudinally adjust
On screw rod between bar, the two ends of back-moving spring are fixedly connected respectively with plugging plate, longitudinally adjust bar.
The plugging plate is provided with the truncated cone-shaped structure being brought into close contact with closure mouth.
The guidance set includes crank, and the longitudinally adjust bar extend into the one end in the pipeline and fixes the song
Handle, the movable end of the crank is fixedly connected the plugging plate by connecting rod.
The vacuum closure interface module also includes pressing plate, and first through hole is provided with above the pipeline, and the pressing plate will
The first through hole sealing, is provided with third through-hole, for the drive component hermetically passing in the middle part of the pressing plate.
The vacuum closure interface module also includes limit assembly, and the limit assembly is fixed on the pressing plate；
The limit assembly includes stop screw and adjusts limited block；The limited block that adjusts is fixed on the outer of third through-hole
Side, stop screw is engaged through the spacing hole that spacing regulating block is provided with longitudinally adjust bar.
The pressing plate includes top board and lower platen；The top board and lower platen stacked on top, are bolted on
On pipeline outer wall.
At least 2 sealing rings are provided between the top board and lower platen, wherein 1 sealing ring is close to longitudinally adjust bar and is set
Put.
Compared with prior art, beneficial effects of the present invention are：
Ionogenic mass spectrograph is changed under a kind of holding mass spectrum internal vacuum condition that the present invention is provided, by longitudinally adjust
Plugging plate is moved on to operating position by bar, the closure mouth blocked on pipeline internal partition；With ionogenic process is removed, ionization is indoor
Tend to normal pressure, plugging plate both sides pressure reduction increase, back-moving spring is stretched, plugging plate being attached on closure mouth tightly sends out mass spectrum
Raw chamber interior vacuum is substantially unaffected；During being reinstalled ion source, the air in ion source region is extracted out, ionization is indoor
Tend to vacuum, promote plugging plate pressure at both sides to taper into, at plugging plate and pipeline dividing plate closure mouth between laminating degree by
Decrescence little, back-moving spring retraction drives plugging plate to return to initial position；It is final to realize envelope after both sides vacuum remains basically stable
Closure plate departs from closure mouth；Adjust longitudinally adjust bar and plugging plate is moved on to into off-position；Mass spectrograph disclosed by the invention is to the greatest extent
In the case that amount reduces mass spectrum generation house vacuum state destructiveness, ionogenic dismounting is realized；And, ion source is changed
Afterwards, it is only necessary to extract the vacuum of ion source region, the Domain Volume is less, and the time of evacuation substantially shortens, and improves
Production efficiency；
The truncated cone-shaped structure being brought into close contact with closure mouth is provided with by plugging plate, above-mentioned fit structure is being made by external force
Ensure that plugging plate is difficult to slide with；
By arranging sealing ring, being brought into close contact for longitudinally adjust bar and third through-hole is realized；Improve sealing.
Description of the drawings
Fig. 1 is to change ionogenic mass spectrum under a kind of holding mass spectrum internal vacuum condition disclosed in an embodiment of the present invention
The structure chart of instrument.
In figure：1：Top board；2：Lower platen；3：Sealing ring；4：Longitudinally adjust bar；5：Screw rod；6：Spacing regulating block；7：Limit
Position screw；8：Plugging plate；9：Back-moving spring；10th, pipeline；11st, pipeline dividing plate.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
The present invention is described in further detail below in conjunction with the accompanying drawings：
Embodiment 1：
One kind keeps changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that including ionization chamber, matter
There is room and vacuum closure interface module in spectrum, vacuum closure interface module is the pipeline configuration of both ends open；The ion of ionization chamber
Sealing concatenation between the ions into channel of exit passageway, vacuum closure interface module and mass spectrum generation room, vacuum closure interface
Dividing plate is set in the pipeline configuration of component, insertion closure mouth is provided with the middle part of dividing plate；
Vacuum closure interface module also includes plugging plate and drive component, and drive component drives plugging plate to be moved to closure mouth
Place, plugging plate closure mouth under negative pressure.Drive component includes：Longitudinally adjust bar and guidance set；Longitudinally adjust bar one end
It extend in pipeline, and in the end connection guidance set；Guidance set, for driving plugging plate being transversely to the machine direction adjusting rod
Side be moved upward to closure mouth at.
When guidance set selects screw rod, its specific design is as follows：
As shown in figure 1, the invention discloses a kind of keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, electricity
First through hole is provided with the pipeline of room；The one end of longitudinally adjust bar 4 passes through first through hole, and is provided with the second through hole in the end；Hang down
The straight screw rod 5 in longitudinally adjust bar 4 is passed through from the second through hole, is arranged on longitudinally adjust bar 4 by nut, and screw rod 5 can be
Slide in second through hole, the concrete stroke for sliding is set as the case may be；Plugging plate 8 is fixed on one end of screw rod 5, position
Between pipeline dividing plate 11 and longitudinally adjust bar 4；Back-moving spring 9 is enclosed within the screw rod 5 between plugging plate 8 and longitudinally adjust bar 4,
The two ends of back-moving spring 9 are fixedly connected respectively with plugging plate 8, longitudinally adjust bar 4.The present invention is ensured by arranging back-moving spring 9
After ion source is reinstalled, in the presence of back-moving spring 9, plugging plate 8 can automatically return to initial position, realize closure
Truncated cone-shaped structure on plate 8 departs from closure mouth；Facilitate longitudinally adjust bar that plugging plate is moved on to into off-position；Reducing as far as possible
In the case that mass spectrum occurs house vacuum state destructiveness, ionogenic dismounting is realized；And, after ion source is changed, only
The vacuum for extracting ion source region is needed, the Domain Volume is less, and the time of evacuation substantially shortens, and improves production effect
Rate.
In order to improve the sealing between longitudinally adjust bar and first through hole；The present invention is also arranged in the outside of first through hole
For sealing the pressing plate of first through hole；Pressing plate opens up the top board 1 and lower platen 2 of third through-hole including center, and top board 1 is with
The consistency from top to bottom of pressing plate 2 stacking, the third through-hole of top board 1 are corresponding with the third through-hole of lower platen 2, are bolted on pipe
On pipeline outer wall；Longitudinally adjust bar 4 passes through third through-hole, at least 2 sealing rings is provided between top board 1 and lower platen 2, wherein 1
Individual sealing ring is close to the setting of longitudinally adjust bar；For sealing the space between third through-hole and longitudinally adjust bar 4, mass spectrograph is improved
Sealing.
At plugging plate mobile working position, in order to realize fixation of the longitudinally adjust bar in the position；The present invention is in pressing plate
Limit assembly is provided with, limit assembly includes stop screw 7 and adjusts limited block 6, adjusts limited block 6 and be fixed on third through-hole
Outside, stop screw 7 is engaged through spacing regulating block 6 with the spacing hole opened up on longitudinally adjust bar 4；For by longitudinally adjust
Bar 4 is fixed on the position specified.
In order to ensure that plugging plate is difficult to slide in the case of by external force；The present invention is provided with and closure in the outside of plugging plate 8
The truncated cone-shaped structure that mouth is brought into close contact.
Assembling process is as follows：
The closure mouth of insertion is opened up on dividing plate in pipeline；The tool of design longitudinally adjust bar 4, screw rod 5, plugging plate 8 etc.
Body installation site, selects the structures such as suitable longitudinally adjust bar 4, screw rod 5, plugging plate 8, it is ensured that plugging plate can be close to closure
Mouthful；
First through hole and the bolt mounting holes for installing pressing plate are opened up on pipeline；
Third through-hole is opened up in top board 1 and the centre of lower platen 2, in the end of longitudinally adjust bar 4 the second through hole is opened up；
Multi-layer sealed circle 3 is set around third through-hole on lower platen 2, top board 1, the lower platen 2 heap poststack that aligns is put
In first through hole；
T-shaped longitudinally adjust bar 4 is stretched to inside mass spectrograph ionization chamber through third through-hole, by the closure with truncated cone-shaped structure
Plate 8 is fixed on one end of screw rod 5, back-moving spring 9 is fixedly installed on side of the plugging plate 8 away from closure mouth；With plugging plate 8
The second through hole is passed perpendicularly through with the screw rod 6 of back-moving spring 9, the other end of back-moving spring 9 is fixed on longitudinally adjust bar 4, it is ensured that
Back-moving spring is in former long status；
Nut of screwing on realizes the assembling of screw rod 5, it is ensured that has suitable screw rod 5 to slide between nut and longitudinally adjust bar 4 and goes
Journey；
Bolt passes through bolt mounting holes, and top board 1 and lower platen 2 are together fixed on pipeline outer wall；
Arrange on top board 1 and adjust limited block 6 and stop screw 7, stop screw 7 is through spacing regulating block 6 and longitudinal direction tune
The spacing hole opened up on pole 4 is engaged, and the position for adjusting limited block 6 and stop screw 7 is installed according to needs of production；
Complete mass spectrometric assembling.
Operation principle is as follows：
When mass spectrograph needs to change ion source, plugging plate is moved to by work from off-position by longitudinally adjust bar
Position, and longitudinally adjust bar is fixed by stop screw；During dismounting is ionogenic, the pressure inside ionization chamber can be raised,
Atmospheric pressure state is changed into from vacuum state, the pressure reduction so before and after plugging plate can increase, and back-moving spring is stretched；Ion source is complete
It is normal pressure on the outside of ionization chamber during full dismounting, it is fine vacuum that mass spectrum occurs interior, and plugging plate is in negative pressure state, utilizes this
Pressure reduction fits in the circular table close structure on plugging plate at closure mouth, and the vacuum state in mass spectrum remains unchanged substantially；When
After the completion of changing ionogenic work, ion source is reinstalled, using the air pump of ionization chamber, has reached ionization chamber specified
During vacuum, ionization interior tends to vacuum；The pressure of plugging plate both sides diminishes, and back-moving spring shrinks, and plugging plate is subject to ion source
The thrust of the inside air pressure in region, also resetted the outside pulling force for producing by back-moving spring, when thrust is less than pulling force, in reset bullet
In the presence of spring, plugging plate can automatically return to initial position, and the truncated cone-shaped structure on plugging plate departs from closure mouth；At this moment again
Plugging plate is moved to the position of inoperative with longitudinally adjust bar.
Embodiment 2：
Guidance set can replace screw rod from crank；
Longitudinally adjust bar extend into one end fixed crank in pipeline, and the movable end of crank is fixedly connected institute by connecting rod
State plugging plate.
The crank is driven to transport work(, the closure mouth that plugging plate is blocked on pipeline internal partition by longitudinally adjust bar.
Ionogenic mass spectrograph is changed under a kind of holding mass spectrum internal vacuum condition that the present invention is provided, by longitudinally adjust
Plugging plate is moved on to operating position by bar, the closure mouth blocked on pipeline internal partition, is fixed using stop screw；With dismounting
Ionogenic process, ionization interior tends to normal pressure, plugging plate both sides pressure reduction increase, back-moving spring is stretched, and plugging plate is tightly
It is attached on closure mouth, makes mass spectrum that chamber interior vacuum to occur and be substantially unaffected；During being reinstalled ion source, ion source is extracted out
Air in region, ionization interior tends to vacuum, promotes plugging plate pressure at both sides to taper into, at plugging plate and pipeline dividing plate
Laminating degree between closure mouth is gradually reduced, back-moving spring retraction, drives plugging plate to return to initial position.Treat both sides vacuum base
After this maintains an equal level, finally realize that plugging plate departs from closure mouth；Adjust longitudinally adjust bar and plugging plate is moved on to into off-position；This
Bright disclosed mass spectrograph realizes ionogenic tearing open in the case where mass spectrum generation house vacuum state destructiveness is reduced as far as possible
Dress.And, ion source change after, it is only necessary to extract the vacuum of ion source region, the Domain Volume is less, evacuation when
Between substantially shorten, improve production efficiency；The truncated cone-shaped structure being brought into close contact with closure mouth is provided with by plugging plate, it is above-mentioned to match somebody with somebody
Close structure and ensure that plugging plate is difficult to slide in the presence of by external force；By arranging sealing ring, longitudinally adjust bar and the 3rd are realized
Through hole is brought into close contact；Improve sealing.
The preferred embodiments of the present invention are these are only, the present invention is not limited to, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. it is a kind of to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that including ionization chamber, mass spectrum
Generation room and vacuum closure interface module, the vacuum closure interface module is the pipeline configuration of both ends open；Ionization chamber from
Sealing concatenation between the ions into channel of subexit passage, vacuum closure interface module and mass spectrum generation room；The vacuum seal
Dividing plate is set in the pipeline of stifled interface module, the closure mouth of insertion is provided with the middle part of dividing plate；
The vacuum closure interface module also includes plugging plate and drive component, and the plugging plate is positioned close to block the electricity of mouth
From interior；The drive component drives the plugging plate to be moved at the closure mouth, and the closure mouth is blocked under negative pressure；Institute
Stating drive component includes：Longitudinally adjust bar and guidance set；Described longitudinally adjust bar one end is extend in the pipeline, and at this
End connects the guidance set；The guidance set, for guiding the plugging plate perpendicular to the longitudinally adjust bar
Side is moved upward at the closure mouth；
The vacuum closure interface module also includes：Adjust with plugging plate, longitudinal direction respectively at back-moving spring, the two ends of the back-moving spring
Pole is fixedly connected.
2. it is as claimed in claim 1 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
State one end that longitudinally adjust bar extend in the pipeline and be provided with the second through hole；
The guidance set includes screw rod, and screw rod is transversely to the machine direction adjusting rod, passes through from the second through hole, installed in longitudinally adjust bar
On；
The plugging plate is fixed on one end of screw rod.
3. it is as claimed in claim 2 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
State on the screw rod that back-moving spring is enclosed between plugging plate and longitudinally adjust bar.
4. it is as claimed in claim 3 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
State plugging plate and be provided with the truncated cone-shaped structure being brought into close contact with closure mouth.
5. it is as claimed in claim 1 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
Guidance set is stated including crank, the longitudinally adjust bar extend into the one end in the pipeline and fixes the crank, the crank
Movable end the plugging plate is fixedly connected by connecting rod.
6. ionogenic mass spectrograph is changed under the holding mass spectrum internal vacuum condition as described in any one of claim 1-5, it is special
Levy and be, vacuum closure interface module also includes pressing plate, be provided with first through hole above the pipeline, the pressing plate is by institute
First through hole sealing is stated, third through-hole is provided with the middle part of the pressing plate, for the drive component hermetically passing.
7. it is as claimed in claim 6 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
Stating vacuum closure interface module also includes limit assembly, and the limit assembly is fixed on the pressing plate；
The limit assembly includes stop screw and adjusts limited block；It is described to adjust the outside that limited block is fixed on third through-hole,
Stop screw is engaged through the spacing hole that spacing regulating block is provided with longitudinally adjust bar.
8. it is as claimed in claim 6 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
Pressing plate is stated including top board and lower platen；The top board and lower platen stacked on top, are bolted on pipeline outer wall.
9. it is as claimed in claim 8 to keep changing ionogenic mass spectrograph under mass spectrum internal vacuum condition, it is characterised in that institute
State and be provided between top board and lower platen at least 2 sealing rings, wherein 1 sealing ring is close to the setting of longitudinally adjust bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510605489.XA CN105047521B (en) | 2015-09-21 | 2015-09-21 | Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510605489.XA CN105047521B (en) | 2015-09-21 | 2015-09-21 | Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105047521A CN105047521A (en) | 2015-11-11 |
| CN105047521B true CN105047521B (en) | 2017-05-17 |
Family
ID=54453974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510605489.XA Active CN105047521B (en) | 2015-09-21 | 2015-09-21 | Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105047521B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375626B (en) * | 2018-04-18 | 2024-05-31 | 融智生物科技（青岛）有限公司 | Loading device for matrix-assisted laser desorption ionization time-of-flight mass spectrometry |
| CN112908832A (en) * | 2021-04-13 | 2021-06-04 | 杭州安誉科技有限公司 | Mass spectrum interface device applied to mass spectrometer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6103069A (en) * | 1997-03-31 | 2000-08-15 | Applied Materials, Inc. | Chamber design with isolation valve to preserve vacuum during maintenance |
| CN103313501A (en) * | 2012-03-05 | 2013-09-18 | 株式会社东芝 | Ion source |
| CN104455506A (en) * | 2013-11-26 | 2015-03-25 | 核工业北京地质研究院 | Vacuum gate valve, mass spectrometry instrument and method for establishing high vacuum environment in mass spectrometry sample change |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4649774B2 (en) * | 2001-05-14 | 2011-03-16 | 株式会社Ｉｈｉ | Ion source and filament replacement method |
| US7564028B2 (en) * | 2007-05-01 | 2009-07-21 | Virgin Instruments Corporation | Vacuum housing system for MALDI-TOF mass spectrometry |
-
2015
- 2015-09-21 CN CN201510605489.XA patent/CN105047521B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6103069A (en) * | 1997-03-31 | 2000-08-15 | Applied Materials, Inc. | Chamber design with isolation valve to preserve vacuum during maintenance |
| CN103313501A (en) * | 2012-03-05 | 2013-09-18 | 株式会社东芝 | Ion source |
| CN104455506A (en) * | 2013-11-26 | 2015-03-25 | 核工业北京地质研究院 | Vacuum gate valve, mass spectrometry instrument and method for establishing high vacuum environment in mass spectrometry sample change |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105047521A (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105047521B (en) | Mass spectrometer for replacing ion source by maintaining vacuum condition in mass spectrum | |
| CN107755601A (en) | A kind of building bar cutting machine | |
| CN105047518A (en) | Mass spectrum connector device applied to mass spectrometer | |
| EP1457679A3 (en) | Screw compressor capable of manually adjusting both internal volume ratio and capacity | |
| CN105789672A (en) | Fuel cell stack assembly device | |
| CN206211390U (en) | A kind of gas-filling cabinet and its pressure release passage | |
| CN211081599U (en) | Piston ring sealing flat-open box chamber door structure | |
| CN2828491Y (en) | Unload priming valve | |
| CN206116533U (en) | Bleeder lithium is from formula battery structure | |
| CN202203978U (en) | Air blowing box | |
| CN108216429A (en) | A kind of skylight glass and roof face difference adjust tooling | |
| CN206978203U (en) | A kind of air interchanger of warmhouse booth | |
| CN211691187U (en) | Disassembly and assembly structure of building outer wall disconnect-type plant wall | |
| CN202597028U (en) | High-efficiency vacuumizing pump | |
| CN206913331U (en) | A kind of plank perforating device for being convenient to clean wood chip | |
| CN206694568U (en) | A kind of high sensitivity adjustable type combines air-valve | |
| CN207052979U (en) | A kind of switch cubicle with outdoor rain-proof function | |
| CN212811441U (en) | Novel structure of motor for hydraulic machinery | |
| CN207213990U (en) | Solar street light | |
| CN205438410U (en) | A adjustable mounting tool that is used for wardrobe door anticollision strip | |
| CN205001201U (en) | A admission valve for screw vacuum pump | |
| CN204835865U (en) | Direct current motor long screw installs auxiliary fixture | |
| CN110875502B (en) | Flow frame for carbon fiber storage battery production and use method thereof | |
| CN203483094U (en) | Shoe changing cabinet | |
| CN105033941B (en) | Gantry type installation fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |