CN209880538U - Door structure for vacuum chamber - Google Patents
Door structure for vacuum chamber Download PDFInfo
- Publication number
- CN209880538U CN209880538U CN201920990362.8U CN201920990362U CN209880538U CN 209880538 U CN209880538 U CN 209880538U CN 201920990362 U CN201920990362 U CN 201920990362U CN 209880538 U CN209880538 U CN 209880538U
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- sleeve
- hatch
- handle
- door
- vacuum chamber
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Abstract
The utility model discloses a hatch door structure for a vacuum chamber, which comprises a hatch door, wherein the top of the hatch door is provided with a handle, and the left end of the handle is hinged with a top cover into a whole; cabin door lower part integrated into one piece has the lug with top cap hatch matched with, has seted up the mounting groove with the hatch door upper surface of lug correspondence department, links firmly and slides in the lower sleeve in the mounting groove and is provided with the sleeve, goes up in the sleeve top upwards extends to the fixed slot of handle, goes up the sleeve top and is connected with fixed slot through the fixed pin, goes up the cover and is equipped with compression spring on the sleeve. The utility model has the advantages that the cabin door moves downwards under the action of negative pressure in the vacuumizing process, not only has certain buffering effect, but also can realize the continuous sealing of the cabin door, and ensures the sealing performance of the cabin door and the vacuum chamber; go up the sleeve and pass through the fixed pin hinge with the handle, guarantee to have certain rotatory surplus between hatch door and the handle, not only can adjust the offset that assembly error brought, can also guarantee the sealing performance of hatch door and sealing washer.
Description
Technical Field
The present invention relates to a vacuum chamber, and more particularly, to a door structure for a vacuum chamber.
Background
Matrix-assisted laser desorption ion source time-of-flight mass spectrometry (MALDI-TOF MS) is a commonly used soft ionization mass spectrometer. When the ion source of the mass spectrometer ionizes a sample, the ionization is mostly performed in a vacuum environment, so that the sealing performance of the vacuum chamber of the mass spectrometer is a key structure for ensuring the analysis ionization result of the sample.
In order to realize the smooth entering and exiting of the sample into and from the vacuum chamber of the mass spectrometer, a hatch is arranged on the top cover plate of the vacuum chamber, a hatch door is arranged at the hatch door in a sealing way, and the hatch door and a sample target groove in the vacuum chamber form a transition chamber for placing the sample; after the sample is placed, the cover plate is closed, the sample target groove moves downwards to enable the sample to enter the high vacuum of the vacuum chamber (the vacuum degree can reach 10)- 7mbar) region, enabling the resolution of the sample.
The sealing performance of hatch door is the key structure of guaranteeing the high vacuum degree of vacuum chamber, and CN207233697U discloses an business turn over appearance device and mass spectrograph of mass spectrograph, including the body, seted up logical groove on the apron at body top, sealed lid in logical groove is equipped with the hatch door, and the motor passes through the automation of gear, rack realization hatch door and opens, close. The above-mentioned hatch doors present the following problems in use: because the hatch door is plate structure, laminate with leading to the groove fast when the evacuation, sealing performance is poor, can't guarantee the vacuum degree of vacuum chamber. Therefore, how to design a hatch door with good sealing performance is an important problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
An object of the utility model is to provide a hatch door structure for vacuum chamber, hatch door have certain elastic deformation for the hatch door has the cushioning effect, and sealing performance is good, long service life.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the hatch door structure for the vacuum chamber comprises a hatch door with a sealing cover arranged on a top cover of the vacuum chamber, the top of the hatch door is provided with a handle, and the left end of the handle is hinged with the top cover into a whole; hatch door lower part integrated into one piece have with top cap hatch matched with lug, with the mounting groove has been seted up to the hatch door upper surface that the lug corresponds the department, links firmly slide in the lower sleeve in the mounting groove and be provided with the upper sleeve that the bottom has spacing card limit, in the fixed slot that upper sleeve top upwards extends to the handle, upper sleeve top through the fixed pin with the fixed slot is connected, is located the cover and is equipped with compression spring on the upper sleeve of lower sleeve.
The bottom of the lower sleeve is turned outwards to form a mounting edge, and the mounting edge is fixedly connected with the bottom wall of the mounting groove through screws.
The top cover upper surface that is located the hatch right side is seted up flutedly, be provided with contact switch in the recess, the handle right-hand member be provided with contact switch matched with switch touch panel, the recess top be provided with switch touch panel's base matched with switch clamp plate.
And a sealing ring is arranged in an annular groove on the upper surface of the top cover close to the hatch.
The utility model has the advantages that the compression spring is arranged between the cabin door and the handle, the cabin door moves downwards under the action of negative pressure in the vacuumizing process, not only has a certain buffer effect, but also can realize the continuous sealing of the cabin door, and ensures the sealing performance of the cabin door and the vacuum chamber; go up the sleeve and pass through the fixed pin hinge with the handle, guarantee to have certain rotatory surplus between hatch door and the handle, not only can adjust the offset that assembly error brought, can also adjust the sealed face of hatch door bottom and the angle between the sealing washer, guarantee the sealing performance of hatch door and sealing washer.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view along a-a in fig. 1.
Fig. 3 is an enlarged schematic view of a portion B in fig. 2.
Figure 4 is an operational view of the hatch of figure 2.
Fig. 5 is a schematic perspective view of the present invention.
Fig. 6 is a view showing the installation position of the present invention in the vacuum chamber.
Detailed Description
As shown in fig. 1-3 and fig. 5 and 6, the door structure for a vacuum chamber of the present invention comprises a door 3 for sealing the door on a top cover 2 of a vacuum chamber 1, a handle 4 is provided on the top of the door 3, and the left end of the handle 4 is hinged to a hinge seat 19 on the top cover 2 through a hinge shaft 18; a convex block 5 matched with the hatch opening of the top cover 2 is integrally formed at the lower part of the cabin door 3, a mounting groove 6 is formed in the upper surface of the cabin door 3 corresponding to the convex block 5, a lower sleeve 7 is fixedly connected in the mounting groove 6, the bottom of the lower sleeve 7 is turned outwards to form a mounting edge 12, and the mounting edge 12 is fixedly connected with the bottom wall of the mounting groove 6 through a positioning screw 13 to ensure that the lower sleeve 7 is rigidly connected with the cabin door 3; it has the last sleeve 9 of spacing card limit 8 to slide to be provided with the bottom in the lower sleeve 7, go up sleeve 9 top upwards extend to in the fixed slot of handle 4, it is articulated as an organic whole through fixed pin 10 with fixed slot to go up sleeve 9 top, it is equipped with compression spring 11 to be located the last sleeve 9 of lower sleeve 7 and go up the cover, hatch door 3 moves down under the effect of negative pressure when the evacuation, lower sleeve 7 and last sleeve 9 relative motion make compression spring 11 be in the stress state, hatch door 3 moves down the in-process and has the cushioning effect, the continuation of hatch door 3 is sealed has been realized.
As shown in fig. 3, a sealing ring 17 is arranged in an annular groove on the upper surface of the top cover 2 close to the hatch opening, and the hatch 3 moves downwards to continuously compress the sealing ring 17 in the vacuum pumping process, so that the sealing performance is ensured; be located the hatch right side top cap 2 upper surface is seted up flutedly, be provided with contact switch 14 in the recess, 4 right-hand members of handle be provided with contact switch 14 matched with switch touch panel 15, the recess top be provided with switch touch panel 15's base matched with switch clamp plate 16, contact switch 14 has the warning effect, and 3 closed back switch touch panels of hatch door 15 pass the recess and contact switch 14 contacts, and contact switch 14 transmits the control system for the mass spectrograph with the closed signal transmission of hatch door 3.
During operation, the hatch door 3 is closed after the sample is placed, the switch touch panel 15 on the handle 4 triggers the contact switch 14, the contact switch 14 transmits the in-place closing signal of the hatch door 3 to the control system of the mass spectrometer, the control system controls the work of the vacuum pumping system of the mass spectrometer to start vacuum pumping, and in the vacuum pumping process, as the negative pressure in the vacuum chamber 1 is increasingly large, the hatch door 3 moves downwards under the action of the negative pressureΔLAs shown in fig. 4, the door 3 is continuously sealed to ensure the sealing performance of the vacuum chamber 1. When the sample needs to be replaced, the sample target plate 20 in the vacuum chamber 1 rises to tightly push against the top cover 2, the sample target plate 20, the hatch and the hatch door 3 enclose a transition chamber, and the pressure of the chamber to be transitioned is 10-2When the mbar is close to the atmospheric pressure, the cabin door 3 is lifted upwards by holding the handle 4.
In the description of the present invention, it should be noted that the terms "left", "right", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do 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.
Claims (4)
1. The utility model provides a hatch door structure for vacuum chamber, establishes hatch door (3) on vacuum chamber (1) top cap (2) including sealed lid, its characterized in that: a handle (4) is arranged at the top of the cabin door (3), and the left end of the handle (4) is hinged with the top cover (2) into a whole; hatch door (3) lower part integrated into one piece have with top cap (2) hatch matched with lug (5), with mounting groove (6) have been seted up to hatch door (3) upper surface that lug (5) correspond the department, link firmly slide in lower sleeve (7) in mounting groove (6) and be provided with bottom and have last sleeve (9) of spacing card limit (8), go up sleeve (9) top and upwards extend to in the fixed slot of handle (4), go up sleeve (9) top through fixed pin (10) with fixed slot is connected, is located last sleeve (9) of lower sleeve (7) and goes up the cover and is equipped with compression spring (11).
2. The door structure for a vacuum chamber according to claim 1, wherein: the bottom of the lower sleeve (7) is outwards turned to form a mounting edge (12), and the mounting edge (12) is fixedly connected with the bottom wall of the mounting groove (6) through a screw (13).
3. The door structure for a vacuum chamber according to claim 1, wherein: the upper surface of the top cover (2) on the right side of the hatch is provided with a groove, a contact switch (14) is arranged in the groove, the right end of the handle (4) is provided with a switch touch panel (15) matched with the contact switch (14), and the top of the groove is provided with a switch pressing plate (16) matched with a base of the switch touch panel (15).
4. The door structure for a vacuum chamber according to claim 1, wherein: and a sealing ring (17) is arranged in an annular groove on the upper surface of the top cover (2) close to the hatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990362.8U CN209880538U (en) | 2019-06-28 | 2019-06-28 | Door structure for vacuum chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990362.8U CN209880538U (en) | 2019-06-28 | 2019-06-28 | Door structure for vacuum chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880538U true CN209880538U (en) | 2019-12-31 |
Family
ID=68948810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920990362.8U Active CN209880538U (en) | 2019-06-28 | 2019-06-28 | Door structure for vacuum chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209880538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555168A (en) * | 2020-04-23 | 2020-08-18 | 吴童 | Vacuum high-voltage power distribution room |
| WO2022068232A1 (en) * | 2020-09-30 | 2022-04-07 | 中元汇吉生物技术股份有限公司 | Vacuum chamber and cabin door structure |
-
2019
- 2019-06-28 CN CN201920990362.8U patent/CN209880538U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555168A (en) * | 2020-04-23 | 2020-08-18 | 吴童 | Vacuum high-voltage power distribution room |
| WO2022068232A1 (en) * | 2020-09-30 | 2022-04-07 | 中元汇吉生物技术股份有限公司 | Vacuum chamber and cabin door structure |
| EP4223974A1 (en) * | 2020-09-30 | 2023-08-09 | Zybio Inc. | Vacuum chamber and cabin door structure |
| EP4223974A4 (en) * | 2020-09-30 | 2024-05-08 | Zybio Inc | Vacuum chamber and cabin door structure |
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