CN209656620U - Vacuum sample introduction mechanism - Google Patents
Vacuum sample introduction mechanism Download PDFInfo
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- CN209656620U CN209656620U CN201821938398.3U CN201821938398U CN209656620U CN 209656620 U CN209656620 U CN 209656620U CN 201821938398 U CN201821938398 U CN 201821938398U CN 209656620 U CN209656620 U CN 209656620U
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Abstract
The utility model discloses a kind of vacuum sample introduction mechanisms.The vacuum sample introduction mechanism includes vacuum tank, gas circuit sealing element, takes out valve, return-air valve and molecular pump in advance；The top of vacuum tank has sample holes and is connected to the gas circuit control channel of sample holes, gas circuit control channel is opened on the outer wall at the top of vacuum tank, sealing cover is used to open or closes the outer openings of sample holes, there is target platform in vacuum tank, target platform can seal or open the inside opening of sample holes, form adapter cavity between target platform and sealing cover；The connection of gas circuit sealing element is on the vacuum box for sealing gas circuit control channel, gas circuit sealing element is equipped with the aspirating hole and return-air hole for being connected to gas circuit control channel, pre- valve of taking out is connected on gas circuit sealing element for controlling turning on or off for aspirating hole, and return-air valve is connected on gas circuit sealing element for controlling turning on or off for return-air hole；Molecular pump is connected to vacuum tank.The vacuum sample introduction mechanism is not easy to gas leakage, is not easy to damage sample.
Description
Technical field
The utility model relates to Mass Spectrometer Method fields, more particularly, to a kind of vacuum sample introduction mechanism.
Background technique
Matrix-assisted laser desorption ionization instrument is a mass spectrograph for being usually used in macromolecular sample analysis
Device.When analyzing sample, often makes fluid sample point on sample target, after dry, be transmitted to by Sample Room in vacuum state
Under ionized region carry out ionization analysis.Since sample cannot directly enter in vacuum environment under normal pressure, in order to guarantee point
Analysis is as a result, sample needs gradually to transit to vacuum environment from atmospheric pressure environment.There is no a good methods to realize sample at present
Vacuum sample introduction and sample is not damaged.
Utility model content
Based on this, it is necessary to provide one kind be not easy to gas leakage, stability and reliability greatly improve, after-sales service it is convenient
Vacuum sample introduction mechanism.
A kind of vacuum sample introduction mechanism, including vacuum tank, gas circuit sealing element, pre- pumping valve and return-air valve；
The top of the vacuum tank has the sample holes for the vacuum chamber for being connected to the vacuum tank, and the vacuum tank also has gas
Road control channel, one end of the gas circuit control channel are connected to the sample holes, and the other end is opened on the top of the vacuum tank
The outer wall in portion, the vacuum tank are externally connected to the sealing cover for being used to open or closing the outer openings of the sample holes,
There is target platform, the target platform can be moved at the inside opening of the sample holes to seal the sample holes in the vacuum chamber
Inside opening；When the target platform seals the inside opening of the sample holes, formed between the target platform and the sealing cover
Adapter cavity；
The gas circuit sealing element is located at the outside of the vacuum tank and is connected on the vacuum tank to seal the gas circuit
The outer openings of control channel, the gas circuit sealing element are equipped with aspirating hole and return-air hole, the aspirating hole and described time
Stomata is connected to by the gas circuit control channel with the sample holes, the pre- pumping valve be connected on the gas circuit sealing element with
It is used to open and perhaps closes the aspirating hole return-air valve and be connected on the gas circuit sealing element to be used to open or close
The return-air hole.
The vacuum sample introduction mechanism further includes fore pump, molecular pump and air exhaust nozzle in one of the embodiments,；It is described
Molecular pump is connected to vacuum tank so that for persistently vacuumizing to the vacuum tank, the fore pump is connected to molecular pump, the pumping
Gas nozzle is embedded in the aspirating hole and is connected to the aspirating hole, and the fore pump is also connected to the pumping by the air exhaust nozzle
Stomata.
The vacuum sample introduction mechanism further includes vacuum tube in one of the embodiments,；The fore pump passes through described true
Blank pipe is connected to the air exhaust nozzle.
The vacuum sample introduction mechanism further includes return-air mouth in one of the embodiments,；The return-air mouth is embedded described
It is connected in return-air hole and with the return-air hole.
One end of the aspirating hole and one end of the return-air hole are opened on the gas circuit in one of the embodiments,
The other end of the outer surface of sealing element, the other end of the aspirating hole and the return-air hole is connected to the gas circuit control channel
Outer openings.
The vacuum sample introduction mechanism further includes sealing ring in one of the embodiments,；The sealing ring is embedded described
In the outer openings of gas circuit control channel, the sealing ring is between sealing between the gas circuit sealing element and the vacuum tank
Gap.
There is the first valve opening in one of the embodiments, one end of first valve opening connects on the gas circuit sealing element
Pass through the gas circuit control channel, the other end of first valve opening is opened on opening for the outer wall of the gas circuit sealing element and the end
The pre- pumping valve is embedded in mouthful, and the aspirating hole is connected to first valve opening, when the pre- pumping valve is towards first valve opening
When interior mobile, the pre- pumping valve can close the aspirating hole.
There is the second valve opening in one of the embodiments, one end of second valve opening connects on the gas circuit sealing element
Pass through the gas circuit control channel, the other end of second valve opening is opened on opening for the outer wall of the gas circuit sealing element and the end
It is embedded with the return-air valve in mouthful, the return-air hole is connected to second valve opening, when the return-air valve is towards second valve
When moving in hole, the return-air valve can close the return-air hole.
The pre- pumping valve and the return-air valve are direct-acting electromagnetic valve in one of the embodiments,.
The gas circuit sealing element and the vacuum tank detachable connection in one of the embodiments,.
Above-mentioned vacuum sample introduction mechanism can be realized to be entered by external sample and damage in vacuum tank and not to sample, be not easy
Pre- pumping valve, return-air valve are integrated on vacuum tank by gas circuit sealing element in the vacuum sample introduction mechanism of gas leakage, the utility model, it is real
Existing module integral installation does not take up space, and takes out valve, return-air valve and gas circuit sealing element in advance and vacuum tank constitutes an entirety, in advance pumping valve,
Return-air valve and gas circuit sealing element are directly arranged on vacuum tank, reduce the setting of pipeline, are provided with pumping on gas circuit sealing element
Hole and return-air hole, through hole are connected to gas circuit control channel and adapter cavity, avoid the design of traditional pipeline, Neng Gouti
The leakproofness of high vacuum sample introduction mechanism, improves the integrated degree of vacuum tank, and the stability and reliability when vacuum tank sample introduction are big
It is big to improve；In addition, the cheap of the vacuum sample introduction mechanism of the utility model, after-sales service are conveniently.Specifically, when sample target spot
The inside opening that sample holes are sealed after complete sample, at the inside opening that target platform can be moved at the sample holes, is opened back
Air valve opens sealing cover so that adapter cavity deforms normal pressure state by vacuum state, and sample is put into adapter cavity, closes sealing cover,
Return-air valve is closed, pre- pumping valve is opened, adapter cavity is taken out in advance using external fore pump, forms secondary vacuum；Then under target platform
Drop drives sample to enter in instrument main chamber, completes sample introduction operation.The utility model is connected to the gas circuit of sample holes by setting
The leakproofness of adapter cavity can be improved in control channel and gas circuit sealing element.
Detailed description of the invention
Fig. 1 is vacuum sample introduction mechanism schematic diagram described in an embodiment；
Fig. 2 is the gas circuit sealing element schematic diagram of vacuum sample introduction mechanism shown in FIG. 1.
Description of symbols
10: vacuum sample introduction mechanism；100: vacuum tank；110: sealing cover；120: adapter cavity；200: sealing ring；300: pre- to take out
Valve；400: return-air valve；500: molecular pump；600: fore pump；700: gas circuit sealing element；710: aspirating hole；720: return-air hole；730:
First valve opening；740: the second valve openings；800: vacuum tube；900: air exhaust nozzle；1000: return-air mouth.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
The understanding for opening content is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" includes
Any and all combinations of one or more related listed items.
Shown in Figure 1, an embodiment of the present invention provides a kind of vacuum sample introduction mechanism 10 comprising vacuum tank
100, gas circuit sealing element 700, pre- pumping valve 300, return-air valve 400, molecular pump 500 and fore pump 600.
The top of vacuum tank 100 has the sample holes for the vacuum chamber for being connected to the vacuum tank, and the top of vacuum tank 100 also has
There is gas circuit control channel, one end of gas circuit control channel is connected to the inner wall of sample holes and the other end is opened on vacuum tank 100
The outer wall at top.The outside of vacuum tank 100 is rotatably connected to sealing cover 110.Sealing cover 110 is used to open or closes sample holes
Outer openings namely sample holes opening outwardly.
There is target platform in the vacuum chamber of vacuum tank 100.Target platform can be moved at the inside opening of sample holes to seal or
Person opens the opening of the inside opening namely sample holes of sample holes inwardly, when the inside opening of target platform sealing sample holes, target platform
Adapter cavity 120 is formed between sealing cover 110.The movement of target platform is that the driving mechanism in the vacuum chamber by vacuum tank 100 is complete
At.It should be noted that outer openings refer to that the opening that sample holes are located at outside vacuum tank, inside opening refer to sample introduction
The opening of hole inwardly.
Gas circuit sealing element 700 is located at the outside of vacuum tank 100 and is connected on vacuum tank 100 and seals gas circuit control channel
Positioned at the outer openings of vacuum tank 100.Gas circuit sealing element 700 can be low in the high other end in step-like namely one end, between both ends
With step.
Gas circuit sealing element 700 is equipped with aspirating hole 710 and return-air hole 720.One end of aspirating hole 710 and return-air hole 720
One end be opened on the outer surface of gas circuit sealing element 700, in particular on the side wall of gas circuit sealing element 700, aspirating hole 710
The other end of the other end and return-air hole 720 is connected to gas circuit control channel, the both ends of gas circuit control channel be respectively communicated with into
Sample hole and aspirating hole 710 and return-air hole 720 namely gas circuit control channel play connection sample holes and aspirating hole 710 and return-air
The effect in hole 720.
Pre- valve 300 of taking out is connected on gas circuit sealing element 700 for controlling turning on or off for aspirating hole 710.Specifically
Ground, pre- valve 300 of taking out are connected on the outer surface of gas circuit sealing element 700 to be used to open or close aspirating hole 710.
Return-air valve 400 is connected on gas circuit sealing element 700 for controlling turning on or off for return-air hole 720.Specifically
Ground, return-air valve 400 are connected on the outer surface of gas circuit sealing element 700 to be used to open or close return-air hole 720.
Molecular pump 500 is connected to vacuum tank 100 to vacuumize for the vacuum chamber persistently to vacuum tank 100, prime
Pump 600 is connected to molecular pump 500 and aspirating hole 710.On the one hand fore pump 600 maintains the operating of molecular pump 500 to vacuum
The vacuum chamber of case 100 is vacuumized, and on the other hand can be taken out in advance adapter cavity 120 so that adapter cavity by aspirating hole 710
120 form vacuum state.Vacuum degree in adapter cavity 120 can be detected by forevacuum ga(u)ge or other are able to detect vacuum degree
Equipment realize.
In a specific example, vacuum sample introduction mechanism 10 further includes air exhaust nozzle 900.Air exhaust nozzle 900 is located in aspirating hole 710
And be connected to aspirating hole 710, fore pump 600 is connected to air exhaust nozzle 900.
In a specific example, vacuum sample introduction mechanism 10 further includes vacuum tube 800.Fore pump 600 by vacuum tube 800 with
Air exhaust nozzle 900 is connected to.
In a specific example, vacuum sample introduction mechanism 10 further includes return-air mouth 1000.Return-air mouth 1000 is embedded in return-air hole
It is connected in 720 and with return-air hole 720.
Shown in Figure 2, in a specific example, vacuum sample introduction mechanism 10 further includes sealing ring 200.Sealing ring 200 is set
Between gas circuit sealing element 700 and vacuum tank 100, sealing ring 200, which is embedded, is located at the outside of vacuum tank 100 in gas circuit control channel
In opening, sealing ring 200 is used to seal the gap between above-mentioned gas circuit sealing element 700 and vacuum tank 100.
Preferably, sealing ring 200 is ring type seal 200.
It is shown in Figure 2, it is preferable that through the first valve opening for having its upper surface or less bottom surface on gas circuit sealing element 700
730, one end of the first valve opening 730 is connected to gas circuit control channel, and the other end of the first valve opening is opened on the gas circuit sealing element
Outer wall and the opening at the end in be embedded with pre- pumping valve 300, one end of aspirating hole 710 is connected to 730 other end of the first valve opening and opens
Mouth is embedded in the first valve opening 730 in the side of gas circuit sealing element 700, pre- valve 300 of taking out to be used to open or close aspirating hole
710.When taking out valve 300 in advance towards when moving in the first valve opening 730, pre- valve 300 of taking out can close aspirating hole 710.Wherein, valve is taken out in advance
300 be direct-acting electromagnetic valve.
In a specific example, the second valve opening 740 for having its upper surface or less bottom surface is run through on gas circuit sealing element 700, the
One end of two valve openings 740 is connected to gas circuit control channel, and the other end of the second valve opening 740 is opened on the outer of the gas circuit sealing element
Return-air valve 400 is embedded in the opening at wall and the end, one end of return-air hole 720 is connected to the second valve opening 740, and the other end is opened on
The side of gas circuit sealing element 700, return-air valve 400 are embedded in the second valve opening 740 to be used to open or close return-air hole 720.
When return-air valve 400 is towards when moving in second valve opening 740, the return-air valve 400 can close the return-air hole 740.Its
In, return-air valve 400 is direct-acting electromagnetic valve.
The utility model is connected to the first valve opening of gas circuit control channel 730 by setting, is connected to gas circuit control channel the
Two valve openings 740 can be improved stability when air inlet in adapter cavity or return-air, and pass through direct driving type electromagnetic, direct driving type electromagnetic
The setting of valve improves air inlet or the automation of return-air.
In a specific example, gas circuit sealing element 700 and 100 detachable connection of vacuum tank, gas circuit sealing element 700 and true
The detachable connection type of empty van 100 is convenient for the replacement and maintenance of gas circuit sealing element 700.
Above-mentioned vacuum sample introduction mechanism 10 when in use, includes the following steps:
When needing to change target, driving mechanism in the vacuum chamber of vacuum tank 100 driving target platform is moved to the interior of sample holes
The inside opening of sample holes is sealed at side opening, after target platform seals the inside opening of sample holes, between target platform and sealing cover 110
Form adapter cavity 120.
By the pre- pumping valve 300 of dynamic formula towards movement in the first valve opening 730 to close the first valve opening 730.Pass through Direct Action Type
Return-air valve 400 open the second valve opening 740, the second valve opening 740 is connected to by gas circuit control channel with adapter cavity 120, realization pair
The return-air of adapter cavity 120, adapter cavity 120 is gradually restored to normal pressure state at this time, opens sealing cover 110, is put into sample to target platform
On, sealing cover 110 is then covered again.
The second valve opening 740 is closed by the return-air valve 400 of Direct Action Type, the first valve opening is opened by the pre- pumping valve 300 of dynamic formula
730, adapter cavity 120 is taken out in advance by external fore pump 600, is detected by forevacuum ga(u)ge or other is able to detect very
Vacuum degree in the equipment detection adapter cavity 120 of reciprocal of duty cycle, when adapter cavity 120 reaches the vacuum degree of setting, driving mechanism driving
General who has surrendered's sample delivery carries out next step operation, such as Mass Spectrometer Method to designated position under target platform.
Above-mentioned vacuum sample introduction mechanism 10, which can be realized, to be entered in vacuum tank 100 by external sample and does not cause to damage to sample
It is bad, it is not easy to gas leakage.Specifically, after sample target spot complete sample, target platform can be moved at the inside opening at sample holes with
The inside opening of sample holes is sealed, return-air valve 400 is opened, so that adapter cavity 120 deforms normal pressure state by vacuum state, is opened close
Capping 110, sample is put into adapter cavity 120, closes sealing cover 110, closes return-air valve 400, is opened and is taken out valve 300, fore pump in advance
600 pairs of adapter cavities 120 are taken out in advance, form secondary vacuum；Then target platform declines, and sample is driven to enter in vacuum chamber for detection
Such as Mass Spectrometer Method completes sample introduction operation.
The vacuum sample introduction mechanism 10 of the utility model will take out valve 300 in advance, return-air valve 400 is integrated by gas circuit sealing element 700
In on vacuum tank 100, realize module integral installation, do not take up space, it is pre- take out valve 300, return-air valve 400 and gas circuit sealing element 700 with
Vacuum tank 100 constitutes an entirety, and pre- valve 300, return-air valve 400 and the gas circuit sealing element 700 taken out is directly arranged in vacuum tank 100
On, reduce the setting of pipeline, aspirating hole and return-air hole are provided on gas circuit sealing element 700, through hole and gas circuit control are logical
The direct connection in road and adapter cavity, avoids the design of traditional pipeline, can be improved the leakproofness of vacuum sample introduction mechanism 10,
The integrated degree for improving vacuum tank 100, stability and reliability when 100 sample introduction of vacuum tank greatly improve；In addition, this is practical
The cheap of novel vacuum sample introduction mechanism 10, after-sales service are convenient.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of vacuum sample introduction mechanism, which is characterized in that including vacuum tank, gas circuit sealing element, pre- pumping valve and return-air valve；
The top of the vacuum tank has the sample holes for the vacuum chamber for being connected to the vacuum tank, and the vacuum tank also has gas circuit control
Channel processed, one end of the gas circuit control channel are connected to the sample holes, and the other end is opened on the top of the vacuum tank
Outer wall, the vacuum tank is externally connected to the sealing cover for being used to open or closing the outer openings of the sample holes, described
There is target platform, the target platform can be moved at the inside opening of the sample holes to seal in the sample holes in vacuum chamber
Side opening；When the target platform seals the inside opening of the sample holes, transition is formed between the target platform and the sealing cover
Chamber；
The gas circuit sealing element is located at the outside of the vacuum tank and is connected on the vacuum tank to seal the gas circuit control
The outer openings in channel, the gas circuit sealing element are equipped with aspirating hole and return-air hole, the aspirating hole and the return-air hole
It is connected to by the gas circuit control channel with the sample holes, the pre- pumping valve is connected on the gas circuit sealing element to be used for
The aspirating hole is turned on or off, the return-air valve is connected on the gas circuit sealing element described to be used to open or close
Return-air hole.
2. vacuum sample introduction mechanism according to claim 1, which is characterized in that the vacuum sample introduction mechanism further includes prime
Pump, molecular pump and air exhaust nozzle；The molecular pump is connected to vacuum tank to be used to persistently vacuumize the vacuum tank, before described
Grade pump is connected to molecular pump, and the air exhaust nozzle is embedded in the aspirating hole and is connected to the aspirating hole, and the fore pump is also
The aspirating hole is connected to by the air exhaust nozzle.
3. vacuum sample introduction mechanism according to claim 2, which is characterized in that the vacuum sample introduction mechanism further includes vacuum
Pipe；The fore pump is connected to by the vacuum tube with the air exhaust nozzle.
4. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that the vacuum sample introduction mechanism is also
Including return-air mouth；The return-air mouth is embedded in the return-air hole and is connected to the return-air hole.
5. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that one end of the aspirating hole with
One end of the return-air hole is opened on the outer surface of the gas circuit sealing element, the other end of the aspirating hole and the return-air hole
The other end be connected to the outer openings of the gas circuit control channel.
6. vacuum sample introduction mechanism according to claim 5, which is characterized in that the vacuum sample introduction mechanism further includes sealing
Circle；The sealing ring is embedded in the outer openings of the gas circuit control channel, and the sealing ring is close for sealing the gas circuit
Gap between sealing and the vacuum tank.
7. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that have on the gas circuit sealing element
There is the first valve opening, one end of first valve opening is connected to the gas circuit control channel, another end opening of first valve opening
In being embedded with the pre- pumping valve in the outer wall of the gas circuit sealing element and the opening at the end, the aspirating hole is connected to described first
Valve opening, when the pre- pumping valve is towards when moving in first valve opening, the pre- pumping valve can close the aspirating hole.
8. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that have on the gas circuit sealing element
There is the second valve opening, one end of second valve opening is connected to the gas circuit control channel, another end opening of second valve opening
In being embedded with the return-air valve in the outer wall of the gas circuit sealing element and the opening at the end, the return-air hole is connected to described second
Valve opening, when the return-air valve is towards when moving in second valve opening, the return-air valve can close the return-air hole.
9. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that the pre- pumping valve and described time
Air valve is direct-acting electromagnetic valve.
10. vacuum sample introduction mechanism according to claim 1 to 3, which is characterized in that the gas circuit sealing element with
The vacuum tank detachable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821938398.3U CN209656620U (en) | 2018-11-23 | 2018-11-23 | Vacuum sample introduction mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821938398.3U CN209656620U (en) | 2018-11-23 | 2018-11-23 | Vacuum sample introduction mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209656620U true CN209656620U (en) | 2019-11-19 |
Family
ID=68517126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821938398.3U Active CN209656620U (en) | 2018-11-23 | 2018-11-23 | Vacuum sample introduction mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209656620U (en) |
-
2018
- 2018-11-23 CN CN201821938398.3U patent/CN209656620U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 510535 building 501, No. 1, No. 16, Xinrui Road, Huangpu District, Guangzhou, Guangdong Province (office only) Patentee after: GUANGZHOU HEXIN KANGYUAN MEDICAL TECHNOLOGY CO.,LTD. Address before: 510700 3 / F, building A3, science and technology enterprise accelerator, 11 Kaiyuan Avenue, Huangpu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU HEXIN KANGYUAN MEDICAL TECHNOLOGY CO.,LTD. |
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| CP02 | Change in the address of a patent holder |