Anti-splashing liquid nitrogen inlet hopper of thermal ionization mass spectrometer
By designing curved funnel and multi-layer deflector structures in the mass spectrometer liquid inlet device, combining exhaust holes and pistons, the problems of liquid splash and smoke impact are solved, and an efficient and stable liquid inlet process is achieved.
Patent Information
- Application Number
- CN202421909194.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-08
AI Technical Summary
Existing mass spectrometer liquid inlet devices are prone to splashing when liquid inlet at high levels or large amounts of liquid inlets, and smoke generated by internal liquid reactions will affect liquid inlet efficiency and operational safety.
A liquid nitrogen inlet bucket for anti-splash is designed, using a curved funnel and a multi-layer deflector structure, combining exhaust holes and pistons to achieve rapid drainage of liquid, buffer shock, block splashing and guiding smoke.
It effectively reduces liquid splash, ensures liquid inlet efficiency, and maintains air pressure balance when the liquid reaction produces smoke, ensuring the stability and safety of the liquid inlet process.
Smart Images
Figure CN222883486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid inlet of a thermal ionization mass spectrometer, in particular to a splash-proof liquid nitrogen inlet hopper of a thermal ionization mass spectrometer. Background Art
[0002] A mass spectrometer, also known as a mass spectrometer, is an instrument that separates and detects different isotopes. That is, it is a type of instrument that separates and detects the composition of matter according to the mass differences of atoms, molecules or molecular fragments of a substance based on the principle that charged particles can be deflected in an electromagnetic field.
[0003] When laboratory technicians operate a mass spectrometer, the first and inevitable thing is to use a liquid inlet device to add the liquid to be processed and tested. However, most of the existing mass spectrometer liquid inlet devices use traditional funnels, which are prone to splashing when high-position liquid is added or a large amount of liquid is added. When the internal liquid reacts to produce smoke or gas, the smoke will affect the liquid filling efficiency and may affect the operation of the staff. In view of this, we provide a new type of splash-proof thermal ionization mass spectrometer liquid inlet. Utility Model Content
[0004] The utility model aims to make up for the deficiencies of the prior art and provides a splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer, comprising a liquid inlet hopper shell, a plurality of limit blocks fixedly connected to the inner wall of the liquid inlet hopper shell near the top, a cushion block movably connected to the top of the limit block, a curved funnel movably connected to the inner wall of the cushion block, a liquid inlet is provided at the bottom of the curved funnel, a guide plate 1 is movably connected to the inner wall of the liquid inlet, a guide plate 1 is fixedly connected to the bottom of the curved funnel, a plurality of guide plates 1 are movably connected to the inner wall of the guide plate, a plurality of guide plates 2 are fixedly connected to the inner wall of the liquid inlet hopper shell, a filter port is provided at the bottom of the liquid inlet hopper shell, and a filter hopper is movably connected to the top of the filter port.
[0006] As mentioned above, the inner wall of the curved funnel is an upward curved arc, the outer wall of the curved funnel is a downward curved arc, the outer wall of the curved funnel is evenly fixedly connected with a plurality of wedge blocks at the top position, the wedge blocks are clamped in the grooves on the inner wall of the cushion block, the inner wall of the liquid inlet is evenly provided with a plurality of grooves, the grooves run through the inner wall of the liquid inlet, the grooves on the inner wall of the curved funnel and the guide plate are clamped with the baffle plate together, so as to facilitate the removal and replacement of the guide plate.
[0007] As mentioned above, the pad is movably connected to the inner corner of the liquid inlet hopper shell, and an exhaust hole is opened at the center position of the upper surface of the pad. The exhaust hole runs through the pad, and a piston is movably connected to the top of the exhaust hole. The exhaust hole can effectively avoid the influence of air pressure imbalance on the liquid inlet efficiency when smoke and gas are generated due to liquid reaction.
[0008] As mentioned above, the guide plate is circular, a retaining ring is fixedly connected to the outer wall of the guide plate, the guide plate 1 is a flat long strip, the end of the guide plate 1 close to the curved funnel is curved, and the other end of the guide plate 1 extends close to the filter port, so that the smoke flows toward the opposite side of the poured liquid, reducing the impact of the smoke on the incoming liquid when it is generated.
[0009] As mentioned above, the guide plate 2 is a bent long strip, and the guide plate 2 extends along the inner wall of the liquid inlet hopper shell from the top of the filter port to the bottom of the limit block. The guide plate 2 is of different heights, so that smoke and gas flow along the gap between the guide plates toward the inner cavity of the liquid inlet hopper shell to avoid accumulation at the filter port and affecting the liquid inlet efficiency.
[0010] As mentioned above, the filter bucket is funnel-shaped, a plurality of guide plates are fixedly connected to the upper surface of the filter bucket, a plurality of filter holes are opened on the upper surface of the filter bucket, a filter screen is fixedly connected to the bottom of the filter bucket, and the guide plate is directly connected to the filter bucket, which ensures the diversion effect when the liquid is introduced while preventing impurities from entering the equipment and affecting the experimental results.
[0011] Compared with the prior art, the splash-proof liquid nitrogen inlet hopper of the thermal ionization mass spectrometer has the following beneficial effects:
[0012] 1. The utility model arranges a curved funnel inside the liquid inlet hopper shell, installs a guide plate 1 on the inner wall of the curved funnel, fixes a guide plate at the bottom of the curved funnel, and fixes a guide plate 2 on the inner wall of the liquid inlet hopper shell. The upper surface of the curved funnel is bent upward, which can quickly drain the liquid, cushion the impact of the liquid inflow to a certain extent, and reduce the splash of the liquid. The lower surface of the curved funnel is bent downward, and when the liquid is fed at a high liquid level, a closed space is formed with the liquid inlet hopper shell, which can completely block the liquid from splashing out. When the liquid is fed, the liquid flows along the gap between the guide plate 1 and the guide plate 2, so that the liquid flow rate during the liquid feeding is controlled without affecting the large amount of liquid feeding, and the liquid splashing is further reduced.
[0013] 2. The utility model provides a guide plate 2 on the inner wall of the liquid inlet hopper and opens an exhaust hole on the cushion block. When the internal liquid reacts to produce smoke and gas, on the one hand, the smoke and gas will diffuse along the guide plate 2 to avoid accumulation at the filter port and affecting the liquid inlet efficiency. On the other hand, after opening the exhaust hole piston, the internal and external air pressures can be balanced, which can effectively avoid the low liquid inlet efficiency caused by inconsistent internal and external air pressures and effectively avoid the influence of smoke and gas on the liquid inlet.
[0014] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a cross-sectional schematic diagram of a semi-axis of the three-dimensional structure of the utility model;
[0017] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the utility model;
[0018] Figure 4 It is an exploded schematic diagram of the three-dimensional structure of the utility model;
[0019] Figure 5 It is a semi-axonometric cross-sectional schematic diagram of the curved funnel structure of the utility model.
[0020] In the figure: 1. Liquid inlet hopper shell; 2. Limit block; 3. Cushion block; 4. Curved funnel; 5. Liquid inlet; 6. Guide plate 1; 7. Guide plate; 8. Guide plate 2; 9. Filter port; 10. Filter hopper; 11. Wedge block; 12. Exhaust hole; 13. Piston; 14. Retaining ring; 15. Filter hole; 16. Filter screen. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] like Figure 1-5 As shown, the utility model provides a technical solution: a splash-proof thermal ionization mass spectrometer liquid nitrogen inlet hopper, including a liquid inlet hopper shell 1, a plurality of limit blocks 2 are fixedly connected to the inner wall of the liquid inlet hopper shell 1 near the top, a cushion block 3 is movably connected to the top of the limit block 2, a curved funnel 4 is movably connected to the inner wall of the cushion block 3, a liquid inlet 5 is provided at the bottom of the curved funnel 4, a guide plate 6 is movably connected to the inner wall of the liquid inlet 5, a guide plate 7 is fixedly connected to the bottom of the curved funnel 4, a plurality of guide plates 6 are movably connected to the inner wall of the guide plate 7, a plurality of guide plates 8 are fixedly connected to the inner wall of the liquid inlet hopper shell 1, a filter port 9 is provided at the bottom of the liquid inlet hopper shell 1, and a filter hopper 10 is movably connected to the top of the filter port 9.
[0023] By utilizing the overall structure of the device, when the staff is operating and needs to pour liquid when operating the mass spectrometer, the staff pours the liquid directly into the curved funnel 4, and the liquid flows into the liquid inlet 5 at the bottom of the curved funnel 4 along the guide plate 6 fixedly connected to the inner wall of the curved funnel 4. The inner wall of the liquid inlet 5 is clamped with a guide plate 6, and the bottom of the liquid inlet 5 is fixedly connected with a guide plate 7. When the liquid flows through the guide plate 7, under the action of the guide plate 7 and the retaining ring 14, the liquid can be concentrated and flow down along the guide plate, wherein the gap between the guide plates plays a good guiding role, and the liquid can be quickly introduced into the filter port 9 at the bottom of the liquid inlet funnel shell 1, and the top of the filter port 9 is fixedly connected with a filter bucket 10, and the filter bucket 10 filters the liquid to prevent impurities from entering the mass spectrometer.
[0024] like Figure 2-4 As shown, the inner wall of the curved funnel 4 is an upward curved arc, the outer wall of the curved funnel 4 is a downward curved arc, a number of wedge blocks 11 are evenly welded on the outer wall of the curved funnel 4 near the top, the wedge blocks 11 are snapped into the slots on the inner wall of the cushion block 3, and a number of slots are evenly opened on the inner wall of the liquid inlet 5, and the slots run through the inner wall of the liquid inlet 5.
[0025] When the operator pours the liquid, the upper surface of the curved funnel 4 can quickly guide the liquid, and the lower surface can prevent the liquid from splashing when the liquid is filled at a high position. On the other hand, when smoke and gas are generated during a chemical reaction of the liquid, the smoke and gas can be guided to the exhaust hole 12.
[0026] like Figure 2-4 As shown, the cushion block 3 is movably connected to the inner corner of the liquid inlet hopper shell 1, and an exhaust hole 12 is opened at the center point of the upper surface of the cushion block 3. The exhaust hole 12 runs through the cushion block 3, and a piston 13 is movably connected to the top of the exhaust hole 12.
[0027] When a large amount of liquid is taken in, the liquid inside the instrument may react to produce smoke or gas. When the smoke or gas enters the inner cavity of the liquid inlet bucket shell 1 along the filter port 9, it is easy to affect the liquid intake efficiency at the liquid inlet port 5. Therefore, when it is observed that the internal reaction produces gas or smoke, the piston 13 at the exhaust hole 12 can be opened to balance the air pressure inside and outside the liquid inlet bucket shell 1 to ensure smooth liquid intake.
[0028] like Figure 2-5 As shown, the guide plate 7 is circular, and a retaining ring 14 is fixedly connected to the outer wall of the guide plate 7. The guide plate 16 is in the shape of a flat long strip, and the end of the guide plate 16 close to the curved funnel 4 is curved, and the other end of the guide plate 16 extends close to the filter port 9. The guide plate 2 8 is in the shape of a bent long strip, and the guide plate 2 8 extends along the inner wall of the liquid inlet hopper shell 1 from the top of the filter port 9 to the bottom of the limit block 2.
[0029] After the liquid is poured into the curved funnel 4, the liquid flows quickly and concentratedly along the gaps between the guide plates 6 to the filter inlet 9, avoiding a large amount of liquid splashing when falling directly. For a small amount of liquid splashing to the inner wall of the liquid inlet hopper shell 1, it will flow back to the filter port 9 along the gaps between the guide plates 8 fixedly connected to the inner wall of the liquid inlet hopper shell 1. The setting of two guide plates can avoid liquid splashing to a large extent, wherein the top of the guide plate 6 is bent toward the opposite surface of the pouring liquid, and gaps are provided between the multiple guide plates 6, and the guide plates 6 are of different heights, so that the liquid inlet flow rate is controlled without affecting a large amount of liquid inlet, and liquid splashing is further reduced. At the same time, the smoke flow direction can be guided according to the bent head at the top of the guide plate 6.
[0030] like Figure 2-5 As shown, the filter bucket 10 is funnel-shaped, a plurality of guide plates 6 are fixedly connected to the upper surface of the filter bucket 10, a plurality of filter holes 15 are opened on the upper surface of the filter bucket 10, and a filter screen 16 is fixedly connected to the bottom of the filter bucket 10.
[0031] A layer of mesh filter 16 is provided at the bottom of the cylindrical center of the liquid inlet hopper, which can perform preliminary filtering on the liquid flowing in along the guide plate to prevent impurities in the liquid from entering the mass spectrometer and affecting the experimental results.
[0032] Working principle: by utilizing the overall structure of the device, when the staff is operating and needs to pour liquid when operating the mass spectrometer, the staff directly pours the liquid into the curved funnel 4, and the liquid flows along the guide plate 6 fixedly connected to the inner wall of the curved funnel 4 into the liquid inlet 5 at the bottom of the curved funnel 4. The inner wall of the liquid inlet 5 is clamped with a guide plate 6, and the bottom of the liquid inlet 5 is fixedly connected with a guide plate 7. When the liquid flows through the guide plate 7, under the action of the guide plate 7 and the retaining ring 14, the liquid can be concentrated and flow down along the guide plate, wherein the gap between the guide plates plays a good guiding role, and the liquid can be quickly The liquid is introduced into the filter port 9 at the bottom of the liquid inlet funnel housing 1, and a filter funnel 10 is fixedly connected to the top of the filter port 9. The filter funnel 10 filters the liquid to prevent impurities from entering the mass spectrometer. When the operator pours the liquid, the upper surface of the curved funnel 4 can quickly guide the liquid, and the lower surface can, on the one hand, prevent the liquid from splashing when the liquid is inlet at a high position, and on the other hand, when smoke or gas is generated when a chemical reaction occurs in the liquid, the smoke and gas can be guided to the exhaust hole 12. When a large amount of liquid is inlet, the liquid inside the instrument may react to generate smoke or gas, and the smoke or gas will flow along the filter port 9. When the liquid enters the inner cavity of the liquid inlet hopper shell 1, it is easy to affect the liquid inlet efficiency at the liquid inlet port 5. Therefore, when it is observed that the internal reaction produces gas or smoke, the piston 13 at the exhaust hole 12 can be opened to balance the air pressure inside and outside the liquid inlet hopper shell 1 to ensure smooth liquid inlet. After the liquid is poured from the curved funnel 4, the liquid flows quickly and concentratedly along the gap between the guide plates 1 and 6 to the filter inlet 9 to avoid a large amount of liquid splashing when falling directly. For a small amount of liquid splashed to the inner wall of the liquid inlet hopper shell 1, it will reflow along the gap between the guide plates 2 and 8 fixedly connected to the inner wall of the liquid inlet hopper shell 1. The new liquid flows to the filter port 9. The arrangement of two guide plates can avoid liquid splashing to a large extent. The top of the guide plate 6 is bent toward the opposite side of the poured liquid. Gaps are provided between the multiple guide plates 6, and the heights of the guide plates 6 are different. The liquid inlet flow rate is controlled without affecting a large amount of liquid inlet, and liquid splashing is further reduced. At the same time, the smoke flow direction can be guided according to the bent head at the top of the guide plate 6. A layer of mesh filter 16 is provided at the bottom of the cylindrical center of the liquid inlet hopper, which can perform preliminary filtration on the liquid flowing in along the guide plate to prevent impurities in the liquid from entering the mass spectrometer and affecting the experimental results.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer, comprising an inlet hopper housing (1), characterized in that: The inner wall of the liquid inlet hopper shell (1) is fixedly connected to a plurality of limit blocks (2) near the top, the top of the limit block (2) is movably connected to a cushion block (3), the inner wall of the cushion block (3) is movably connected to a curved funnel (4), the bottom of the curved funnel (4) is provided with a liquid inlet (5), the inner wall of the liquid inlet (5) is movably connected to a guide plate 1 (6), the bottom of the curved funnel (4) is fixedly connected to a guide plate (7), the inner wall of the guide plate (7) is movably connected to a plurality of guide plates 1 (6), the inner wall of the liquid inlet hopper shell (1) is fixedly connected to a plurality of guide plates 2 (8), the bottom of the liquid inlet hopper shell (1) is provided with a filter port (9), the top of the filter port (9) is movably connected to a filter hopper (10).
2. The splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer according to claim 1, characterized in that: The inner wall of the curved funnel (4) is in the shape of an upwardly curved arc, and the outer wall of the curved funnel (4) is in the shape of a downwardly curved arc. A plurality of wedge-shaped blocks (11) are evenly fixedly connected to the outer wall of the curved funnel (4) near the top, and the wedge-shaped blocks (11) are snap-fitted into the slots on the inner wall of the cushion block (3). The inner wall of the liquid inlet (5) is evenly provided with a plurality of slots, and the slots penetrate the inner wall of the liquid inlet (5).
3. The splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer according to claim 1, characterized in that: The cushion block (3) is movably connected to an inner corner of the liquid inlet hopper housing (1); a vent hole (12) is provided at the center of the upper surface of the cushion block (3); the vent hole (12) penetrates the cushion block (3); and a piston (13) is movably connected to the top of the vent hole (12).
4. The splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer according to claim 1, characterized in that: The guide plate (7) is circular, and a retaining ring (14) is fixedly connected to the outer wall of the guide plate (7). The guide plate 1 (6) is in the shape of a flat long strip, and one end of the guide plate 1 (6) close to the curved funnel (4) is curved, and the other end of the guide plate 1 (6) extends close to the filter port (9).
5. The splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer according to claim 1, characterized in that: The guide plate 2 (8) is in the shape of a bent long strip, and extends along the inner wall of the liquid inlet hopper shell (1) from the top of the filter port (9) to the bottom of the limit block (2), and the guide plate 2 (8) is of different heights.
6. The splash-proof liquid nitrogen inlet hopper for a thermal ionization mass spectrometer according to claim 1, characterized in that: The filter hopper (10) is funnel-shaped, a plurality of guide plates (6) are fixedly connected to the upper surface of the filter hopper (10), a plurality of filter holes (15) are provided on the upper surface of the filter hopper (10), and a filter screen (16) is fixedly connected to the bottom of the filter hopper (10).