CN113421817B - Sample inlet and outlet device of mass spectrometer and mass spectrometer - Google Patents
Sample inlet and outlet device of mass spectrometer and mass spectrometer Download PDFInfo
- Publication number
- CN113421817B CN113421817B CN202110568408.9A CN202110568408A CN113421817B CN 113421817 B CN113421817 B CN 113421817B CN 202110568408 A CN202110568408 A CN 202110568408A CN 113421817 B CN113421817 B CN 113421817B
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- box body
- mass spectrometer
- opening
- lifting
- motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/26—Mass spectrometers or separator tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0409—Sample holders or containers
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Tubes For Measurement (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a sample inlet and outlet device of a mass spectrometer, which comprises: a base; the box body is arranged on the base, and a first opening and a second opening are sequentially formed in the upper end of the box body from front to back; the first sliding door is arranged at the upper end of the box body and can movably block the first opening; the second sliding door is arranged at the upper end of the box body and can movably block the second opening; the bearing plate is arranged in the box body and used for bearing a sample to be tested; the driving motor comprises a motor stator and a motor rotor, the motor stator is arranged on the outer side of the box body, and the motor rotor is rotationally connected to the inner side of the box body; the driving gear is connected with the motor rotor; the driving rack is meshed with the driving gear and can drive the bearing plate to move backwards from the lower part of the first opening to the lower part of the second opening; the lifting device is arranged in the box body, is positioned below the second opening and is used for lifting the bearing plate; and the vacuumizing device is used for vacuumizing the interior of the box body.
Description
Technical Field
The invention relates to the field of mass spectrometers, in particular to a mass spectrometer and a sample inlet and outlet device thereof.
Background
Mass spectrometers, also known as mass spectrometers, are instruments used to separate and detect different isotopes and are frequently used in scientific research processes. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALD I-TOF MS) is a commonly used soft ionization mass spectrometer. When ionization is carried out on a sample, most of ion sources of the mass spectrometer need to be carried out in a vacuum environment, the sample needs to be placed under the condition that the atmosphere pressure is excessive to high vacuum, and therefore a safe (biological safety and vacuum degree safety) and efficient sample inlet and outlet device is of great importance to the whole mass spectrum system.
In the middle of present mass spectrometer's business turn over device, because need the inside mark target of drive equipment drive vacuum chamber to make the mark target move the assigned position of ion source and carry out ionization and analysis, consequently rotation pieces such as drive shaft need pass the box setting of business turn over appearance device, consequently need pass the part and carry out rotary seal, because rotary seal cost is higher, the reliability is lower, is difficult to guarantee the vacuum security of business turn over appearance device.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sample inlet and outlet device of a mass spectrometer, which can better ensure the vacuum safety of the sample inlet and outlet device.
The invention relates to a sample inlet and outlet device of a mass spectrometer, which comprises: a base; the box body is arranged on the base, and a first opening and a second opening are sequentially formed in the upper end of the box body from front to back; the first sliding door is arranged at the upper end of the box body and can movably block the first opening; the second sliding door is arranged at the upper end of the box body and can movably block the second opening; the bearing plate is arranged in the box body and used for bearing a sample to be tested; the driving motor comprises a motor stator and a motor rotor, the motor stator is arranged on the outer side of the box body, and the motor rotor is rotationally connected to the inner side of the box body; the driving gear is connected with the motor rotor; the driving rack is meshed with the driving gear and can drive the bearing plate to move backwards from the lower part of the first opening to the lower part of the second opening; the lifting device is arranged in the box body, is positioned below the second opening and is used for lifting the bearing plate; and the vacuumizing device is used for vacuumizing the interior of the box body.
The loading board lower extreme is provided with the guide post, has seted up the guiding hole on the drive rack, and the guide post can be dismantled with the guiding hole and cooperate.
The lifting device comprises a linear motor and a lifting slide block, the linear motor and the lifting slide block are arranged at the lower end of the second opening, the linear motor can drive the lifting slide block to lift, a lifting arm extending forwards is arranged on the lifting slide block, and the bearing plate can move to the position above the lifting arm.
The lifting slide block is provided with a guide pillar, a sliding plate is sleeved on the guide pillar, the lifting arm is arranged on the sliding plate, a permanent magnet is arranged below the sliding plate, and an electromagnet can attract or repel the permanent magnet.
The sliding plate is provided with a friction block which is in sliding fit with the guide post.
The base is provided with a thinning part, the motor rotor is rotatably connected to the upper end of the thinning part, and the motor stator is arranged at the lower end of the thinning part.
The sample inlet and outlet device of the mass spectrometer further comprises a second sliding rail arranged in the box body, the second sliding rail extends along the front-back direction, a plurality of second sliding blocks are arranged on the driving rack, and the second sliding blocks are in sliding fit with the second sliding rails.
The sample inlet and outlet device of the mass spectrometer further comprises a first slide rail arranged in the box body, the first slide rail extends along the front-back direction, the first slide rail is in sliding fit with a first slide block, and the bearing plate is detachably connected with the first slide block.
First slide rail and second slide rail are located electric motor rotor's the left and right sides respectively.
The invention also provides a mass spectrometer which comprises the sample inlet and outlet device of the mass spectrometer.
When the sample inlet and outlet device of the mass spectrometer is used, the first sliding door can be opened, a sample to be detected is placed on the bearing plate, then the first sliding door is closed, the vacuumizing device is started, the interior of the box body is vacuumized, then the driving motor is controlled, the bearing plate is moved to the position below the second opening through the driving gear and the driving rack, then the second sliding door is opened, the bearing plate is driven to ascend through the lifting device, and the sample to be detected is lifted to the designated position of the ion source for ionization and analysis; because the motor rotor is integrally positioned in the box body, and the motor stator is positioned outside the box body, a rotary sealing part is not required to be arranged on the box body, so that the reliability of box body sealing is greatly improved, and the vacuum safety of the sample inlet and outlet device is effectively improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an isometric view of a sample entry and exit device for a mass spectrometer in an embodiment of the invention;
FIG. 2 is a cut-out top view of a sample inlet and outlet device of a mass spectrometer in an embodiment of the invention, with a box omitted;
FIG. 3 is a cross-sectional isometric view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view at E in FIG. 3;
FIG. 5 is an enlarged view at F of FIG. 3;
FIG. 6 is a cross-sectional isometric view taken along line B-B of FIG. 2;
FIG. 7 is a cross-sectional isometric view taken in the direction C-C of FIG. 2;
the above figures contain the following reference numerals.
| Reference numerals | Name (R) |
| 100 | |
| 110 | Box body |
| 111 | |
| 120 | First sliding |
| 130 | Second sliding |
| 201 | |
| 202 | |
| 203 | |
| 204 | |
| 210 | |
| 211 | |
| 212 | |
| 213 | |
| 220 | |
| 221 | |
| 222 | |
| 223 | |
| 224 | |
| 225 | |
| 226 | |
| 227 | Electromagnet |
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present numbers, and larger, smaller, inner, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, installation, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
Referring to fig. 1 to 7, a sample inlet and outlet device of a mass spectrometer in the first aspect of this embodiment includes: a base 100; the box body 110 is arranged on the base 100, and a first opening and a second opening are sequentially formed in the upper end of the box body 110 from front to back; the first sliding door 120 is arranged at the upper end of the box body 110, and the first sliding door 120 can movably block the first opening; the second sliding door 130 is arranged at the upper end of the box body 110, and the second sliding door 130 can movably block the second opening; a carrier plate 213 disposed inside the case 110 for carrying a sample to be tested; the driving motor comprises a motor stator 201 and a motor rotor 202, the motor stator 201 is arranged outside the box body 110, and the motor rotor 202 is rotatably connected to the inner side of the box body 110; a drive gear 203 connected with the motor rotor 202; the driving rack 204 is meshed with the driving gear 203, and the driving rack 204 can drive the bearing plate 213 to move backwards from the lower part of the first opening to the lower part of the second opening; the lifting device is arranged in the box body 110, is positioned below the second opening and is used for lifting the bearing plate 213; and a vacuum pumping device for pumping vacuum inside the box body 110.
When the sample inlet and outlet device of the mass spectrometer is used, the first sliding door 120 can be opened, a sample to be detected is placed on the bearing plate 213, then the first sliding door 120 is closed, the vacuumizing device is started to vacuumize the interior of the box body 110, then the driving motor is controlled, the bearing plate 213 is moved to the lower part of the second opening through the driving gear 203 and the driving rack 204, then the second sliding door 130 is opened, the bearing plate 213 is driven to ascend through the lifting device, and the sample to be detected is lifted to the designated position of the ion source for ionization and analysis; because the motor rotor 202 is integrally positioned in the box body 110, and the motor stator 201 is positioned outside the box body 110, a rotary sealing part is not required to be arranged on the box body 110, the sealing reliability of the box body 110 is greatly improved, and the vacuum safety of the sample inlet and outlet device is effectively improved.
It can be understood that, in this embodiment, the driving motor driving the driving gear 203 to rotate is an outer rotor motor, a stator portion of the driving motor is located outside the box body 110, and a rotor portion of the driving motor is located inside the box body 110, when the bearing plate 213 needs to be moved back and forth, only the motor stator 201 needs to be energized, the motor stator 201 generates an alternating magnetic field, the magnetic field passes through the box body 110 and is transmitted to the rotor, the rotor is driven to rotate, and then the driving gear 203 is driven to rotate without passing through the box body 110 for wiring; for this purpose, the casing 110 may be made of a material that cannot block a magnetic field, such as engineering plastic, etc., which is commonly used in the art.
In this embodiment, the vacuum-pumping device may be a vacuum-pumping device widely used in the prior art, such as a molecular pump.
In the prior art, an external rotor motor with an external rotor is widely applied to a plurality of industries, such as a direct drive motor of a washing machine, a hub motor for an automobile and the like; the structure of the motor can refer to CN209217852U and other prior arts.
It can be understood that the sampling process is opposite to the sampling process, first the lifting device drives the loading plate 213 to descend, so that the loading plate 213 descends to be connected with the driving rack 204, then the driving motor is controlled to drive the loading plate 213 to the lower side of the first sliding plate 223 through the driving rack 204, then the interior of the box body 110 is ventilated, the vacuum state is changed into the normal atmospheric pressure state, and then the first sliding door 120 is opened to take away the object to be measured.
As shown in fig. 6, in order to facilitate the connection and separation of the bearing plate 213 and the driving rack 204, a guide post is disposed at the lower end of the bearing plate 213, a guide hole is disposed on the driving rack 204, and the guide post is detachably engaged with the guide hole; when the bearing plate 213 moves above the second opening under the driving of the rack, the bearing plate 213 is driven by the lifting device to ascend, and the guide hole is separated from the guide post, and during the sample discharging process, the lifting device drives the bearing plate 213 to descend, so that the guide post is inserted into the guide hole, and the bearing plate 213 is combined with the rack; specifically, in order to strengthen the guide effect of guiding hole for the guide post can be accurate insert the guiding hole in the middle of, can set up the guiding hole into the decurrent bell mouth of tapering, and set up the guide post into the decurrent bell mouth of tapering, can also prevent when pinpointing that guide post and guiding hole card are dead.
As shown in fig. 4 and 7, the lifting device includes a linear motor 220 and a lifting slider 221, the linear motor 220 is disposed at the lower end of the second opening, the lifting slider 221 can be driven by the linear motor 220 to lift, a lifting arm 225 extending forward is disposed on the lifting slider 221, and the bearing plate 213 can move above the lifting arm 225; in the sample feeding process, the bearing plate 213 moves above the lifting arm 225 under the driving of the rack, and the linear motor 220 drives the lifting slider 221 to lift up, so that the bearing plate 213 is lifted up by the lifting arm 225, and the bearing plate 213 is lifted up after being separated from the rack; in the sample discharging process, the linear motor 220 drives the lifting slider 221 to descend, so that the lifting arm 225 drives the bearing plate 213 to fall to the bearing plate 213 to be combined with the rack.
As shown in fig. 4, in order to enable the carrier plate 213 to pass through the second sliding door 130 and ascend to a designated position on the premise that the linear motor 220 does not extend above the second sliding door 130, a guide post is opened on the lifting slider 221, a sliding plate 223 is sleeved on the guide post, a lifting arm 225 is arranged on the sliding plate 223, a permanent magnet 226 is arranged below the sliding plate 223, an electromagnet 227 is arranged below the base 100, and the electromagnet 227 can attract or repel the permanent magnet 226; when the bearing plate 213 moves above the lifting arm 225, the electromagnet 227 can be controlled to make the electromagnet 227 repel the permanent magnet 226, at this time, the sliding plate 223 can ascend relative to the guide post, and then the linear motor 220 is controlled to drive the lifting slider 221 to ascend, and when the lifting slider 221 ascends to the highest position, the bearing plate 213 can reach a higher position; when a sample is taken out, the linear motor 220 can be controlled to drive the lifting slider 221 to descend to the lowest end, and then the electromagnet 227 is controlled to attract the permanent magnet 226, so that the lifting arm 225 drives the bearing plate 213 to descend, and the bearing plate 213 is combined with the rack; for the way of adopting connecting rod lifting sample among the prior art, can effectively practice thrift the space that lifting mechanism occupy, reduce the rotation of sample simultaneously, prevent that the sample from being thrown away.
As shown in fig. 4 and 7, the sliding plate 223 is provided with a friction block 224, and the friction block 224 is in sliding fit with the guide post; when the electromagnet 227 attracts or repels the permanent magnet 226, the friction force between the friction block 224 and the guide post can make the sliding block and the guide post relatively fixed without the continuous power supply of the electromagnet 227; in addition, in order to prevent the sliding block from sliding out of the guide post upwards, a limit ring can be installed at the top end of the guide post.
As shown in fig. 5, the base 100 is provided with a thinning portion 111, the motor rotor 202 is rotatably connected to an upper end of the thinning portion 111, and the motor stator 201 is disposed at a lower end of the thinning portion 111; the thinning portion 111, which is referred to herein, refers to a portion having a reduced thickness relative to other portions of the base 100, such that the distance between the stator 201 and the rotor of the motor can be reduced.
As shown in fig. 2 and fig. 3, the sample inlet and outlet device further includes a second slide rail 211 disposed in the case 110, the second slide rail 211 extends along the front-back direction, the driving rack 204 is provided with a plurality of second slide blocks, and the second slide blocks are slidably engaged with the second slide rail 211; at this time, the first slide rail 210 and the second slide rail 211 can ensure that the carrier plate 213 slides smoothly in the front-rear direction.
As shown in fig. 6, the portable electronic device further includes a first slide rail 210 disposed in the case 110, the first slide rail 210 extends along the front-back direction, the first slide rail 210 is slidably fitted with a first slider 212, and the bearing plate 213 is detachably connected to the first slider 212; specifically, two guide posts are arranged below the bearing seat and can be respectively inserted into guide holes formed in the first sliding block 212 and the rack; similar to the rack portion, the guide hole of the first slider 212 may be a tapered guide hole with a downward taper.
As shown in fig. 6, the first slide rail 210 and the second slide rail 211 are respectively located at the left and right sides of the motor rotor 202; at this time, the carrier plate 213 is erected on the two slide rails to further ensure stable sliding; in order to ensure the synchronization of the sliding of the first slider 212 and the rack, the first slider 212 and the rack may be fixedly connected by a connecting rod.
The embodiment also provides a mass spectrometer which comprises the sample inlet and outlet device of the mass spectrometer.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A sample entry and exit device for a mass spectrometer, comprising:
a base (100);
the box body (110) is arranged on the base (100), and a first opening and a second opening are sequentially formed in the upper end of the box body (110) from front to back;
a first sliding door (120) disposed at an upper end of the case (110), the first sliding door (120) being capable of movably blocking the first opening;
the second sliding door (130) is arranged at the upper end of the box body (110), and the second sliding door (130) can movably block the second opening;
The bearing plate (213) is arranged inside the box body (110) and is used for bearing a sample to be tested;
the driving motor comprises a motor stator (201) and a motor rotor (202), the motor stator (201) is arranged on the outer side of the box body (110), and the motor rotor (202) is rotatably connected to the inner side of the box body (110);
a drive gear (203) connected to the motor rotor (202);
a driving rack (204) meshed with the driving gear (203), wherein the driving rack (204) can drive the bearing plate (213) to move backwards from the lower part of the first opening to the lower part of the second opening;
the lifting device is arranged inside the box body (110), is positioned below the second opening and is used for lifting the bearing plate (213);
and the vacuumizing device is used for vacuumizing the interior of the box body (110).
2. The sample inlet and outlet device of a mass spectrometer as claimed in claim 1, wherein the lower end of the loading plate (213) is provided with a guide post, the driving rack (204) is provided with a guide hole, and the guide post is detachably matched with the guide hole.
3. The sample inlet and outlet device of the mass spectrometer as claimed in claim 2, wherein the lifting device comprises a linear motor (220) and a lifting slider (221), the linear motor (220) is arranged at the lower end of the second opening, the lifting slider (221) can be driven to lift by the linear motor (220), a lifting arm (225) extending forwards is arranged on the lifting slider (221), and the bearing plate (213) can move to the position above the lifting arm (225).
4. The sample inlet and outlet device of the mass spectrometer according to claim 3, wherein a guide post is arranged on the lifting slider (221), a sliding plate (223) is sleeved on the guide post, the lifting arm (225) is arranged on the sliding plate (223), a permanent magnet (226) is arranged below the sliding plate (223), an electromagnet (227) is arranged below the base (100), and the electromagnet (227) can attract or repel the permanent magnet (226).
5. The sample inlet and outlet device for a mass spectrometer according to claim 4, wherein a friction block (224) is disposed on the sliding plate (223), and the friction block (224) is slidably engaged with the guide pillar.
6. The sample inlet and outlet device of the mass spectrometer as claimed in claim 1, wherein a thinning portion (111) is formed on the base (100), the motor rotor (202) is rotatably connected to an upper end of the thinning portion (111), and the motor stator (201) is disposed at a lower end of the thinning portion (111).
7. The sample inlet and outlet device of the mass spectrometer as claimed in claim 1, further comprising a second slide rail (211) disposed in the housing (110), wherein the second slide rail (211) extends along a front-back direction, and a plurality of second sliding blocks are disposed on the driving rack (204) and slidably engaged with the second slide rail (211).
8. The sample inlet and outlet device of the mass spectrometer as claimed in claim 7, further comprising a first slide rail (210) disposed in the box body (110), wherein the first slide rail (210) extends along a front-back direction, the first slide rail (210) is slidably fitted with a first slider (212), and the carrier plate (213) is detachably connected with the first slider (212).
9. The mass spectrometer inlet and outlet device according to claim 8, wherein the first slide rail (210) and the second slide rail (211) are respectively located on the left and right sides of the motor rotor (202).
10. A mass spectrometer comprising the sample entry and exit means of the mass spectrometer of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568408.9A CN113421817B (en) | 2021-05-25 | 2021-05-25 | Sample inlet and outlet device of mass spectrometer and mass spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568408.9A CN113421817B (en) | 2021-05-25 | 2021-05-25 | Sample inlet and outlet device of mass spectrometer and mass spectrometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113421817A CN113421817A (en) | 2021-09-21 |
| CN113421817B true CN113421817B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110568408.9A Active CN113421817B (en) | 2021-05-25 | 2021-05-25 | Sample inlet and outlet device of mass spectrometer and mass spectrometer |
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| CN (1) | CN113421817B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114384146B (en) * | 2021-12-24 | 2024-06-14 | 天津国科医疗科技发展有限公司 | Sample business turn over device and mass spectrometer |
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| CN112185796A (en) * | 2020-09-08 | 2021-01-05 | 珠海美华医疗科技有限公司 | Vertical opening and closing cabin door device |
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| US8742335B2 (en) * | 2009-12-18 | 2014-06-03 | Sri International | Rotator sample introduction interface |
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| US6586730B1 (en) * | 1999-02-26 | 2003-07-01 | Hitachi, Ltd. | Plasma ion source mass spectrometer |
| CN105895492A (en) * | 2016-06-12 | 2016-08-24 | 江苏天瑞仪器股份有限公司 | XY mobile platform for analyzing ion source sampling device |
| CN107452593A (en) * | 2017-09-19 | 2017-12-08 | 珠海美华医疗科技有限公司 | A kind of mass spectrometric disengaging sampling device and mass spectrograph |
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|---|---|
| CN113421817A (en) | 2021-09-21 |
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