Cabin door structure and mass spectrometer
By adopting a flip hatch structure in the mass spectrometer, the problem of inconvenient opening and closing of the existing mass spectrometer hatch assembly is solved, and a simpler and more efficient operation process is achieved.
Patent Information
- Application Number
- CN202421800307.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The hatch assembly of the existing mass spectrometer is directly blocked at the inlet of the vacuum capsule, which is inconvenient to open and close, and the entire hatch assembly needs to be frequently disassembled and installed.
The flipped hatch structure is adopted, including the flipped seat, handle and hatch cover. The opening and closing of the hatch cover is achieved through the flip operation of the handle, simplifying the operation process.
It realizes a more convenient opening and closing of the hatch door, reduces the complexity and time of operation, and improves the efficiency of sample replacement and vacuum sealing.
Smart Images
Figure CN223038895U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of analytical instruments, and particularly relates to a cabin door structure and a mass spectrometer. Background Art
[0002] A mass spectrometer mixes a biological molecule sample to be analyzed with a laser beam by using a matrix molecule, ionizes the sample molecule through the radiation energy of the laser, then accelerates the ions into a flight tube, compares the flight time of the ions through the mass-to-charge ratio (m / z) of the ions, and finally obtains the mass spectrum of the biological molecule sample to be analyzed, so as to determine the type of the biological molecule sample according to the differences in the mass spectra of different biological molecule samples.
[0003] A mass spectrometer takes an ion source, a mass analyzer and an ion detector as the core. The sample is carried into the vacuum chamber of the ion detector through a sample target plate. After the sample target plate is placed in the vacuum chamber, a cabin door assembly is installed to separate the inside and outside of the vacuum chamber. The operator frequently opens and closes the cabin door assembly by relying on the handle of the cabin door assembly to realize sample replacement and injection and vacuum sealing. However, limited by the prior art, the cabin door assembly of the existing mass spectrometer is directly blocked at the sample injection port of the vacuum chamber. When opening and closing the vacuum chamber, the whole set of cabin door assembly needs to be frequently disassembled and assembled, which is inconvenient to open and close. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a cabin door structure and a mass spectrometer, which adopt a flip structure and are more convenient to open and close.
[0005] To achieve the above purpose, the utility model provides a cabin door structure, including:
[0006] A flip base, which is fixedly arranged on one side of the sample injection port of the vacuum chamber;
[0007] A handle, which is flipably arranged on the flip base;
[0008] A cabin door cover, which is arranged on the side of the handle facing the sample injection port;
[0009] When the handle is in the first position, the cabin door cover blocks the sample injection port, and the cabin door cover is in a closed state;
[0010] When the handle rotates from the first position relative to the flip base by a set angle to reach the second position, the handle abuts against the flip base, and the cabin door cover is in an open state.
[0011] Preferably, a contact protrusion is formed at the rotating end of the handle, and the flip base is provided with a limiting plane; when the handle rotates to the second position, the contact protrusion abuts against the limiting plane.
[0012] Preferably, a rotating shaft is passed through the rotating end of the handle, and two hinge supports are fixedly provided on the flipping seat. The two ends of the rotating shaft are respectively passed through the two hinge supports, and the rotating shaft is used to support the rotation of the handle relative to the flipping seat; a locking screw is fixedly provided on the hinge support, and the locking screw abuts against the rotating shaft to limit the rotation of the rotating shaft relative to the flipping seat.
[0013] Preferably, a suspension point parallel to the hinge support is provided on the flipping seat, and a tension spring is provided between the hatch cover and the suspension point. The tension spring is used to provide a pre-pressure for the hatch cover through the handle when the handle is in the first position, and is also used to provide a holding force for the handle when the handle is in the second position.
[0014] Preferably, avoiding arc surfaces are symmetrically provided on both sides of the bottom of the rotating end, and the avoiding arc surfaces are used to avoid the outer shell provided close to the rotating end during the flipping process of the handle.
[0015] Preferably, when the handle is in the second position, the handle is inclined relative to the upper cover plate, and a sample inlet is formed on the upper cover plate; the flipping angle of the handle during the flipping process from the first position to the second position is less than 90°.
[0016] Preferably, the outer shell is vertically provided on the upper cover plate, and a sample identification device is fixedly provided inside the outer shell. The sample identification device is used to read the identification code of the sample sent into the vacuum chamber through the sample inlet; when the handle is in the second position, the identification range of the sample identification device does not intersect with the hatch cover and the handle.
[0017] Preferably, the opening and closing end of the handle extends beyond the hatch cover so that the opening and closing end forms a finger pinching part; arc-shaped curved surfaces are recessed on both sides of the finger pinching part.
[0018] Preferably, an inclined surface is formed on the side of the finger pinching part facing the hatch cover; in the direction close to the opening and closing end, the inclined surface inclines away from the hatch cover.
[0019] The present utility model also provides a mass spectrometer, including the above hatch structure.
[0020] Compared with the background art, the installation method of the hatch structure provided by the present utility model is optimized. The optimized hatch structure includes a flipping seat, a handle and a hatch cover. The flipping seat is fixedly provided on one side of the sample inlet of the vacuum chamber, the handle is rotatably provided on the flipping seat, and the hatch cover is provided on the side of the handle facing the sample inlet.
[0021] When the handle is in the first position, the hatch cover plugs the sample inlet, and the hatch cover is in a closed state. After the sample is placed in the vacuum chamber, it separates the inside and outside of the vacuum chamber, so that the vacuum chamber maintains good sealing performance. When the handle rotates a set angle relative to the flipping seat from the first position to reach the second position, the handle abuts against the flipping seat, restricting the handle from driving the flipping seat to continue rotating. After the hatch cover rotates in place with the handle, it also stops rotating. The hatch cover is separated from the sample inlet, and the hatch cover is in an open state, so that the sample can be placed into the vacuum chamber through the sample inlet.
[0022] By optimizing the installation method of the hatch structure, the present utility model changes the original plug-in structure to a flip structure. When opening and closing the hatch cover, just turn the flip handle, which is more convenient for opening and closing.
[0023] The mass spectrometer provided by the present utility model includes the above-mentioned hatch structure and has the same beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.
[0025] Figure 1 It is a closed state diagram of the hatch cover of the hatch structure provided by the embodiment of the present utility model;
[0026] Figure 2 For Figure 1 Partial enlarged view in
[0027] Figure 3 It is an open state diagram of the hatch cover of the hatch structure provided by the embodiment of the present utility model;
[0028] Figure 4 For Figure 3 A-A cross-sectional view in
[0029] Figure 5 For Figure 4 Partial enlarged view of B in
[0030] Figure 6 For Figure 1 Schematic diagram of the relative positions of the handle and the tension spring when the hatch cover is in different positions in
[0031] Figure 7 For Figure 3 Top view of
[0032] Figure 8 For Figure 3 Partial enlarged view of
[0033] Figure 9 For Figure 8 Front view of
[0034] Figure 10 For Figure 9 C-C cross-sectional view of
[0035] Figure 11 For Figure 8Top view;
[0036] Figure 12 It is a view of the open state of the hatch cover when the outer shell is a flat plate.
[0037] Figure 13 It is Figure 1 Front view of the middle handle;
[0038] Figure 14 It is Figure 13 Cross-sectional view taken along line D-D in
[0039] Figure 15 It is Figure 13 Rear view of the middle handle;
[0040] Figure 16 It is Figure 13 Side view of the middle handle;
[0041] Figure 17 It is Figure 13 Top view of the middle handle;
[0042] Figure 18 It is the layout diagram of the hatch structure provided by the embodiment of the present invention in the open state and the sample identification device;
[0043] Figure 19 It is Figure 18 Cross-sectional view taken along line E-E of
[0044] Reference numerals are as follows:
[0045] Flip base 1, vacuum chamber 2, sample inlet 3, handle 4, hatch cover 5, rotating shaft 6, hinge support 7, tension spring 8, outer shell 9, upper cover plate 10, sample identification device 11, support block 12 and hinge shaft 13;
[0046] Rotating end 41, avoidance arc surface 42, opening and closing end 43 and finger pinching part 44;
[0047] Arc-shaped curved surface 441 and inclined surface 442. Detailed implementation manners
[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0049] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0050] An embodiment of the present utility model discloses a hatch structure for opening and closing the sample inlet 3 of the vacuum chamber 2, and the sample enters the vacuum chamber 2 through the sample inlet 3. As shown in the attached Figure 1 and 2 figure, the hatch structure includes a flipping base 1, a handle 4, and a hatch cover 5. The flipping base 1 is fixedly arranged on one side of the sample inlet 3 of the vacuum chamber 2 for supporting the flipping of the handle 4. The handle 4 is flip - pivotally arranged on the flipping base 1, and the hatch cover 5 is arranged on the side of the handle 4 facing the sample inlet 3. The handle 4 is in a long - strip shape and is arranged in the middle of the hatch cover 5.
[0051] It should be added that the sample inlet 3 is a square opening, and the hatch cover 5 is a corresponding square cover to ensure that the hatch cover 5 can completely cover the sample inlet 3. The hatch cover 5 is a stepped structure. As shown in the attached Figure 2 figure, a support block 12 is arranged on the side of the hatch cover 5 facing the handle 4. The support block 12 is fixedly attached to the hatch cover 5 by fastening screws. The support block 12 is rotatably connected to the handle 4 through a hinge shaft 13, so that the hatch cover 5 flips synchronously with the handle 4. It should be noted that the connection between the handle 4 and the hatch cover 5 is detachable. When it is necessary to remove the handle 4 from the hatch cover 5, only need to squeeze the hinge shaft 13 from both sides, and then the handle 4 and the hatch cover 5 can be separated. In this way, the handle 4 can be removed without opening the hatch cover 5.
[0052] As shown in the attached Figure 1 and 2 figure, when the handle 4 is in the first position, the hatch cover 5 plugs at the sample inlet 3, and the hatch cover 5 is in a closed state. After the sample is placed in the vacuum chamber 2, it separates the inner and outer sides of the vacuum chamber 2, so that the vacuum chamber 2 maintains good sealing performance.
[0053] As shown in the attached Figures 3 to 10 figure, when the handle 4 flips a set angle relative to the flipping base 1 from the first position to reach the second position, the handle 4 abuts against the flipping base 1 to mechanically position the handle 4, restricting the handle 4 from driving the flipping base 1 to continue rotating. After the hatch cover 5 flips in place with the handle 4, it also stops rotating. The hatch cover 5 is separated from the sample inlet 3, and the hatch cover 5 is in an open state, which is convenient for the sample to be placed into the vacuum chamber 2 through the sample inlet 3. The set angle mentioned in the text refers to the optimal flipping angle at which the handle 4 flips in place and does not collide with the outer shell 9. This flipping angle is less than 90°, preferably between 84.5° and 86.5°.
[0054] The present utility model optimizes the installation method of the hatch structure, changing the original plug - in structure to a flipping structure. When opening and closing the hatch cover 5, only need to flip the handle 4, which is more convenient.
[0055] As shown in the attached Figure 10As shown, the rotating end 41 of the handle 4 (i.e., the end close to the flipping base 1) is formed with an abutting protrusion, and the flipping base 1 is provided with a limiting plane. When the handle 4 is flipped to the second position, the abutting protrusion abuts against the limiting plane, increasing the extrusion force between the handle 4 and the flipping base 1, so that the handle 4 stays at the second position for a long time, preventing the handle 4 from accidentally flipping during the process of placing the sample and damaging the sample. Of course, an abutting inclined surface can also be provided at the rotating end 41 of the handle 4, which cooperates with the limiting inclined surface of the flipping base 1 to form a wedge-shaped structure, and the limiting purpose can also be achieved. In addition, an anti-slip pad can be added to the rotating end 41 of the handle 4, or a limiting groove can be added to the flipping base 1 to further effectively limit the flipping of the handle 4 relative to the flipping base 1 at the second position.
[0056] As shown in the attached Figure 2 figure, a rotating shaft 6 is passed through the rotating end 41 of the handle 4. Two hinge supports 7 are fixedly arranged on the flipping base 1. Both ends of the rotating shaft 6 are respectively passed through the two hinge supports 7, and the rotating shaft 6 supports the rotation of the handle 4 relative to the flipping base 1. The hinge support 7 is fixedly provided with a locking screw, and the locking screw abuts against the rotating shaft 6 to limit the rotation of the rotating shaft 6 relative to the flipping base 1, and only the handle 4 rotates relative to the flipping base 1. That is to say, the rotating shaft 6 in the present utility model is detachably arranged on the flipping base 1. During maintenance, it is convenient to disassemble and assemble the handle 4 from the flipping base 1. In this way, the handle 4 can be removed from the hatch cover 5 without opening the hatch cover 5, and there is no need to vent the vacuum.
[0057] As shown in the attached Figure 6 and 10 figure, a suspension point 14 parallel to the hinge support 7 is arranged on the flipping base 1. A tension spring 8 is arranged between the hatch cover 5 and the suspension point 14. A fixing pin is fixedly arranged inside the hatch cover 5, and both ends of the tension spring 8 are respectively hooked between the fixing pin and the suspension point 14. When the handle 4 is in the first position, the tension spring 8 is located on the right side of the rotating shaft 6, and the tension spring 8 is in a stretched state. The tension spring 8 provides a pulling force for the handle 4, so as to provide a pre-pressure for the hatch cover 5 through the handle 4, so that the hatch cover 5 is buckled to the sample inlet 3. When the handle 4 is in the second position, the tension spring 8 is located on the left side of the rotating shaft 6, and the tension spring 8 is also in a stretched state. The tension spring 8 provides a holding force for the handle 4, and the hatch cover 5 hovers at the optimal opening position, preventing the hatch cover 5 from falling down and keeping the hatch cover 5 in a stable open state.
[0058] As shown in the attached Figure 11 figure, two symmetrical avoidance arc surfaces 42 are arranged on both sides of the bottom of the rotating end 41 of the handle 4. During the flipping process of the handle 4, the avoidance arc surfaces 42 are used to avoid the outer shell 9 arranged close to the rotating end 41, preventing the handle 4 from rotating at a large angle and colliding with the front side wall of the outer shell 9. The avoidance arc surfaces 42 include a left avoidance arc surface and a right avoidance arc surface arranged symmetrically. When the front side wall of the outer shell 9 is an arc surface, the distances from any point of the left avoidance arc surface and the right avoidance arc surface to the arc surface of the outer shell 9 are equal. Of course, as shown in the attached Figure 12As shown, the front side wall of the outer shell 9 can also be a flat surface, which can still avoid collision interference with the avoidance arc surface 42 of the handle 4.
[0059] As shown in the Figure 6 and 10 figures, when the handle 4 is in the second position, the handle 4 is inclined relative to the upper cover plate 10, which can not only fully open the hatch cover 5, but also avoid interference between the handle 4 and the outer shell 9. The sample inlet 3 is formed on the upper cover plate 10. When the handle 4 is in the first position, the hatch cover 5 is fixedly arranged parallel to the upper cover plate 10. The flipping angle of the handle 4 during the process of flipping from the first position to the second position is less than 90°, preferably between 84.5° and 86.5°, and the optimal included angle is 85.5°. When the handle 4 is in the second position, the flipping angle of the hatch cover 5 needs to be at least greater than 79 degrees to prevent the hatch cover 5 from automatically closing.
[0060] The inclined setting of the handle 4 and the setting of the avoidance arc surface 42 can both avoid collision interference between the handle 4 and the outer shell 9 during opening and closing, so that the opening and closing of the hatch cover 5 and the disassembly and assembly of the outer shell 9 do not affect each other. That is, during maintenance and disassembly, the outer shell 9 can be separately removed without having to disassemble the handle 4 and the hatch cover 5, nor open the hatch cover 5 to vent the vacuum of the target.
[0061] As shown in the Figure 18 and 19 figures, the outer shell 9 is vertically arranged on the upper cover plate 10, and a sample identification device 11 is fixedly arranged inside the outer shell 9. The sample identification device 11 is used to read the identification code of the sample sent through the sample inlet 3. The structure and working principle of the sample identification device 11 can specifically refer to the prior art. When the handle 4 is in the second position, the identification range of the sample identification device 11 does not intersect with the hatch cover 5, enabling the sample identification device 11 to accurately read the sample identification code and avoiding the change of the installation position of the hatch structure from affecting the normal identification of the sample type by the sample identification device 11. The identification code can specifically be a two-dimensional code or a bar code, etc.
[0062] As shown in the Figures 13 to 17 figures, the opening and closing end 43 of the handle 4 (i.e., the end far from the flipping seat 1) extends beyond the hatch cover 5, so that the opening and closing end 43 forms a finger pinching part 44, which is convenient for the user to pinch the handle 4 with the fingers. Arc-shaped curved surfaces 441 are formed by concave inward on both sides of the finger pinching part 44. When the fingers pinch the finger pinching part 44, the arc-shaped curved surfaces 441 fit with the fingers, improving the comfort of the handle 4 from the perspective of ergonomics.
[0063] An inclined surface 442 is formed on the side of the finger pinching part 44 facing the hatch cover 5; in the direction close to the opening and closing end 43, the inclined surface 442 inclines away from the hatch cover 5, forming a gap between the opening and closing end 43 of the handle 4 and the hatch cover 5, making it more convenient for the user to pinch the opening and closing end 43 of the handle 4 with the fingers.
[0064] An embodiment of the present utility model also discloses a mass spectrometer, which includes a hatch structure and has the same beneficial effects.
[0065] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.
[0066] Specific examples are used in this article to elaborate on the principles and implementation manners of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.
Claims
1. A hatch door structure, characterized in that: include: A turning seat (1), wherein the turning seat (1) is fixedly arranged on one side of the sample inlet (3) of the vacuum chamber (2); A handle (4), the handle (4) being flippably disposed on the flip seat (1); A hatch cover (5), the hatch cover (5) being arranged on a side of the handle (4) facing the injection port (3); When the handle (4) is in the first position, the hatch cover (5) is blocked at the injection port (3), and the hatch cover (5) is in a closed state; When the handle (4) is flipped from the first position to the second position at a set angle relative to the flip seat (1), the handle (4) abuts against the flip seat (1), and the hatch cover (5) is in an open state.
2. The door structure according to claim 1, characterized in that: The rotating end (41) of the handle (4) is formed with an abutment protrusion, and the flip seat (1) is provided with a limiting plane; when the handle (4) is flipped to the second position, the abutment protrusion abuts against the limiting plane.
3. The door structure according to claim 1, characterized in that: A rotating shaft (6) is passed through the rotating end (41) of the handle (4); the flip seat (1) is fixedly provided with two hinge supports (7); the two ends of the rotating shaft (6) are respectively passed through the two hinge supports (7); the rotating shaft (6) is used to support the handle (4) to rotate relative to the flip seat (1); the hinge support (7) is fixedly provided with a locking screw, the locking screw abutting against the rotating shaft (6) to limit the rotation of the rotating shaft (6) relative to the flip seat (1).
4. The door structure according to claim 3, characterized in that: The flip seat (1) is provided with a suspension point (14) parallel to the hinge support (7), and a tension spring (8) is provided between the door cover (5) and the suspension point (14). The tension spring (8) is used to provide pre-pressure to the door cover (5) through the handle (4) when the handle (4) is in the first position, and is also used to provide a holding force to the handle (4) when the handle (4) is in the second position.
5. The door structure according to claim 3, characterized in that: Avoidance arc surfaces (42) are symmetrically provided on both sides of the bottom of the rotating end (41), and the avoidance arc surfaces (42) are used to avoid the housing (9) arranged close to the rotating end (41) during the turning process of the handle (4).
6. The door structure according to claim 5, characterized in that: When the handle (4) is in the second position, the handle (4) is tilted relative to the upper cover plate (10), and the upper cover plate (10) is formed with the injection port (3); the flipping angle of the handle (4) during the process of flipping from the first position to the second position is less than 90°.
7. The door structure according to claim 6, characterized in that: The housing (9) is vertically arranged on the upper cover plate (10), and a sample identification device (11) is fixedly arranged in the housing (9), and the sample identification device (11) is used to read the identification code of the sample sent into the vacuum chamber (2) through the sample inlet (3); when the handle (4) is in the second position, the identification range of the sample identification device (11) does not intersect with the hatch cover (5) or the handle (4).
8. The door structure according to any one of claims 1 to 7, characterized in that: The opening and closing end (43) of the handle (4) is arranged beyond the hatch cover (5) so that the opening and closing end (43) forms a finger pinching portion (44); both sides of the finger pinching portion (44) are concave to form an arc-shaped curved surface (441).
9. The door structure according to claim 8, characterized in that: An inclined surface (442) is formed on a side of the finger pinch portion (44) facing the hatch cover (5); in a direction close to the opening and closing end (43), the inclined surface (442) is inclined in a direction away from the hatch cover (5).
10. A mass spectrometer, characterized in that: A hatch structure comprising any one of claims 1 to 9.