Quartz fog chamber for inductively coupled plasma mass spectrometer

Abstract

The utility model relates to the technical field of fog chambers, and discloses a quartz fog chamber for an inductively coupled plasma mass spectrometer, which comprises a fog chamber, the left side of the fog chamber is fixedly connected with a liquid inlet pipe, the outside of the liquid inlet pipe is rotatably connected with a protective sleeve, the left side of the outside of the liquid inlet pipe is provided with a threaded port, and the left side of the outside of the liquid inlet pipe is provided with a screw. A ball groove is formed in the middle of the interior of the liquid inlet pipe, supporting blocks are fixedly connected to the upper side and the lower side of the interior of the ball groove, through hole blocks are fixedly connected to the sides, close to each other, of the two supporting blocks, a first spring is fixedly connected to the left side of the interior of each through hole block, and a blocking block is fixedly connected to the left end of each first spring; a connecting rod is fixedly connected to the middle of the right side of the blocking block. According to the utility model, the backflow of liquid injected into the quartz fog chamber is prevented, the risk that the system is damaged or polluted due to the backflow of the liquid is reduced, and the flow rate and the pressure of the gas in the quartz fog chamber are controlled more finely, so that the data error is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mist chambers, in particular to a quartz mist chamber for an inductively coupled plasma mass spectrometer. Background Art

[0002] The principle of inductively coupled plasma emission spectrometer is that the high-frequency current generated by the high-frequency oscillator is connected to the copper tubular coil with water cooling inside at the upper end of the plasma generator tube through the coupling system. There are three coaxial argon gas flow channels in the quartz plasma generator tube. The cooling gas (Ar) passes through the external and middle channels, surrounding the plasma to stabilize the plasma torch and cool the quartz tube wall to prevent the tube wall from melting due to heat.

[0003] After searching, the Chinese patent with the announcement number of CN212180629U discloses a cooling mist chamber for an inductively coupled plasma emission spectrometer, wherein the cooling comprises a mist chamber and a shell, wherein the shell seals and wraps the mist chamber, and liquid can flow between the shell and the mist chamber. The cooling mist chamber provided by the utility model greatly improves the stability of the plasma torch of an inductively coupled plasma emission spectrometer (ICP-AES, ICP-OES) or a mass spectrometer (ICP-ms), solves the problem of the plasma torch flameout, and thus ensures the stability and sensitivity of the test data of the inductively coupled plasma emission spectrometer (ICP-AES, ICP-OES) or a mass spectrometer (ICP-ms).

[0004] The working principle of the above patent mentions that "the high-frequency generator is one of the main components of ICP-AES, ICP-OES, and ICP-ms, and the power of the high-frequency generator is 1200W-1600W. The smaller the better for daily use, the smaller the background is when testing samples when the power is relatively small, and the power life of the high-frequency generator is long. The device is not easy to damage, among which, the instrument sensitivity of the nebulizer lift of 1.0ml / min is better than that of the nebulizer lift of 0.5ml / min; the flame is stable and does not go out without extinguishing the fire." However, after the injection of the sample liquid in the spray chamber stops, the sample liquid is prone to backflow, affecting the accuracy of the test data. In view of the above problems, a quartz spray chamber for an inductively coupled plasma mass spectrometer is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a quartz mist chamber for an inductively coupled plasma mass spectrometer, aiming to improve the problem in the prior art that after the injection of sample liquid stops, backflow is likely to occur, affecting the accuracy of test data.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A quartz mist chamber for an inductively coupled plasma mass spectrometer comprises a mist chamber, wherein a liquid inlet tube is fixedly connected to the left side of the mist chamber, a protective sleeve is rotatably connected to the outside of the liquid inlet tube, a threaded opening is provided on the left side of the outside of the liquid inlet tube, a ball groove is provided in the middle of the inside of the liquid inlet tube, support blocks are fixedly connected to the upper and lower sides of the inside of the ball groove, through-hole blocks are fixedly connected to the adjacent sides of the two support blocks, a spring 1 is fixedly connected to the left side of the inside of the through-hole block, a blocking block is fixedly connected to the left end of the spring 1, a connecting rod is fixedly connected to the middle part of the right side of the blocking block, a gas inlet tube is fixedly connected to the middle part of the top of the mist chamber, a bottom block is fixedly connected to the top of the inside of the gas inlet tube, a top block is slidably connected to the top of the inside of the gas inlet tube, and a limiting component is provided on the outside of the top block;

[0008] As a further description of the above technical solution:

[0009] The limiting assembly comprises a plurality of grooves, a plurality of springs 2, a plurality of limiting blocks, a chain, an adjusting ring, a connecting pipe and a connecting sleeve, wherein the groove is arranged on the outside of the top block, an end of the spring 2 away from the adjusting ring is fixedly connected to the inner wall of the groove, an end of the spring 2 close to the adjusting ring is fixedly connected to an end of the limiting block away from the adjusting ring, the top of the top block is fixedly connected to the bottom end of the chain, the outside of the chain is fixedly connected to the inner wall of the adjusting ring, the outer bottom end of the connecting pipe is slidably connected to the inner wall of the adjusting ring, and the top of the connecting pipe is fixedly connected to the bottom end of the connecting sleeve;

[0010] As a further description of the above technical solution:

[0011] An air inlet pipe is fixedly connected to the top of the inner wall of the mist chamber, and the top of the air inlet pipe is fixedly connected to the bottom end of the gas inlet pipe;

[0012] As a further description of the above technical solution:

[0013] The left outer portion of the blocking block contacts the inner wall of the ball groove, the spring is sleeved on the outside of the connecting rod, and the through-hole block is sleeved on the outside of the connecting rod;

[0014] As a further description of the above technical solution:

[0015] The outer portion of the limit block is slidably connected to the inner wall of the groove, and the outer portion of the limit block is slidably connected to the top end of the inner wall of the gas inlet pipe;

[0016] As a further description of the above technical solution:

[0017] The bottom end of the link is slidably connected to the top end of the gas inlet pipe, and the top end of the link is slidably connected to the bottom end of the connecting pipe;

[0018] As a further description of the above technical solution:

[0019] The inner part of the adjusting ring is slidably connected to the outer top end of the gas inlet pipe;

[0020] As a further description of the above technical solution:

[0021] A waste liquid discharge port is fixedly connected to the middle of the bottom end of the mist chamber, and a rubber collecting sleeve is movably connected to the outside of the waste liquid discharge port.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, through the cooperation of the connecting rod, the threaded opening, the ball groove, the support block, the through-hole block and other components, the opening of the liquid entering the tube is instantly blocked by the blocking block under the elastic force of the spring 1, so as to prevent the liquid injected into the quartz mist chamber from flowing back, and reduce the risk of the system being damaged or contaminated by the liquid flowing back.

[0024] 2. In the utility model, by cooperating with the adjusting ring, the connecting ring, the limiting block, the top block, the bottom block and other components, the top block is driven by rotating the adjusting ring to adjust the size of the hole of the bottom block, so as to achieve more precise control of the gas flow rate and pressure in the quartz mist chamber, thereby reducing data errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a quartz mist chamber for an inductively coupled plasma mass spectrometer proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of a connecting rod structure of a quartz mist chamber for an inductively coupled plasma mass spectrometer proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the groove structure of a quartz mist chamber for an inductively coupled plasma mass spectrometer proposed by the utility model;

[0028] Figure 4 The utility model is a schematic diagram of the interlocking structure of a quartz mist chamber for an inductively coupled plasma mass spectrometer.

[0029] Legend:

[0030] 1. Mist chamber; 2. Liquid inlet tube; 3. Protective sleeve; 4. Threaded port; 5. Ball groove; 6. Support block; 7. Through-hole block; 8. Spring 1; 9. Block; 10. Connecting rod; 11. Gas inlet tube; 12. Bottom block; 13. Top block; 14. Groove; 15. Spring 2; 16. Limit block; 17. Link; 18. Adjusting ring; 19. Connecting tube; 20. Connecting sleeve; 21. Inlet pipe; 22. Waste liquid outlet; 23. Rubber collecting sleeve. DETAILED DESCRIPTION

[0031] 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.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment: a quartz mist chamber for an inductively coupled plasma mass spectrometer, comprising a mist chamber 1, a liquid inlet tube 2 is fixedly connected to the left side of the mist chamber 1, the mist chamber 1 is made of quartz glass so that the sample situation inside the mist chamber 1 can be clearly seen, a protective sleeve 3 is rotatably connected to the outside of the liquid inlet tube 2, the protective sleeve 3 protects the middle position of the liquid inlet tube 2, the protective sleeve 3 is made of rubber, a threaded opening 4 is opened on the left side of the outside of the liquid inlet tube 2, and the threaded opening 4 is designed for better connection of an external liquid sample pipeline.

[0033] A ball groove 5 is provided in the middle of the liquid inlet pipe 2, and support blocks 6 are fixedly connected to the upper and lower sides of the ball groove 5, and a through-hole block 7 is fixedly connected to the adjacent side of the two support blocks 6. The support block 6 in the ball groove 5 supports the through-hole block 7, and a spring 8 is fixedly connected to the left side of the through-hole block 7, and a blocking block 9 is fixedly connected to the left end of the spring 8. The spring 8 connects the through-hole block 7 and the blocking block 9 to drive the blocking block 9 to reset. A connecting rod 10 is fixedly connected to the middle of the right side of the blocking block 9 to prevent the blocking block 9 from deflecting. A gas inlet pipe 11 is fixedly connected to the middle of the top of the mist chamber 1, and a bottom block 12 is fixedly connected to the top of the gas inlet pipe 11. The gas inlet pipe 11 and the bottom block 12 can enter through external gas, and a top block 13 is slidably connected to the top of the gas inlet pipe 11. A limiting component is provided on the outside of the top block 13. The top block 13 rotates under the drive of the limiting component to cover the bottom block 12 to adjust the gas flow rate of the gas inlet pipe 11.

[0034] refer to Figure 1 , Figure 2The left side of the block 9 contacts the inner wall of the ball groove 5, and the block 9 can block the hole of the ball groove 5 to prevent liquid from seeping out. The spring 8 is sleeved on the outside of the connecting rod 10, and the through-hole block 7 is sleeved on the outside of the connecting rod 10, so that the spring 8 and the connecting rod 10 can stably drive the block 9 to move in a straight line. The top of the inner wall of the mist chamber 1 is fixedly connected with an air inlet pipe 21. The air inlet pipe 21 is designed to better observe the gas heat flow. The top of the air inlet pipe 21 is fixedly connected to the bottom of the gas inlet pipe 11. The middle of the bottom end of the mist chamber 1 is fixedly connected with a waste liquid outlet 22, and the outside of the waste liquid outlet 22 is movably connected with a rubber collection sleeve 23. The rubber collection sleeve 23 and the waste liquid outlet 22 store the waste gas generated inside the mist chamber 1. Compared with the above documents, the function of preventing liquid backflow is realized by the block 9.

[0035] refer to Figure 3 , Figure 4 The limiting assembly includes multiple grooves 14, multiple springs 15, multiple limiting blocks 16, a link 17, an adjusting ring 18, a connecting pipe 19 and a connecting sleeve 20. The groove 14 is opened on the outside of the top block 13. The end of the spring 15 away from the adjusting ring 18 is fixedly connected to the inner wall of the groove 14. The outside of the limiting block 16 is slidably connected to the inner wall of the groove 14. The end of the spring 15 close to the adjusting ring 18 is fixedly connected to the end of the limiting block 16 away from the adjusting ring 18. The outside of the limiting block 16 is slidably connected to the top of the inner wall of the gas inlet pipe 11. When the top block 13 rotates, the limiting block 16 will be repeatedly squeezed and retracted in the groove 14 of the top block 13 between the spring 15 and the inner wall of the gas inlet pipe 11 by the inner wall of the gas inlet pipe 11.

[0036] The top of the top block 13 is fixedly connected to the bottom end of the connecting ring 17, the outside of the connecting ring 17 is fixedly connected to the inner wall of the adjusting ring 18, the adjusting ring 18 is connected to the top block 13 through the connecting ring 17 to drive the top block 13 to rotate, the bottom end of the connecting ring 17 is slidably connected to the top end of the gas inlet pipe 11, the top of the connecting ring 17 is slidably connected to the bottom end of the connecting pipe 19, the outer bottom end of the connecting pipe 19 is slidably connected to the inner wall of the adjusting ring 18, the inner part of the adjusting ring 18 is slidably connected to the outer top end of the gas inlet pipe 11, and the tight connection and rotation between the adjusting ring 18, the connecting pipe 19 and the gas inlet pipe 11 effectively prevent gas from escaping, the top of the connecting pipe 19 is fixedly connected to the bottom end of the connecting sleeve 20, and the connecting sleeve 20 is made of rubber and can be sleeved on external pipes of different sizes.

[0037] Working principle: When in use, the liquid inlet tube 2 of the mist chamber 1 passes through the threaded external pipe of the threaded port 4 to allow the liquid to be analyzed to enter the ball groove 5 from the threaded port 4 and impact the surface of the block 9, driving the block 9 to squeeze the spring 8 and deform, and at the same time driving the connecting rod 10 through the middle hole of the through-hole block 7. At this time, the liquid will flow into the mist chamber 1 along the inner wall edge of the ball groove 5 and wait for analysis. After closing the external liquid inlet device, the liquid will flow back through the liquid inlet tube 2 through the hole of the through-hole block 7 to squeeze the position of the block 9 and then cooperate with the elastic force of the spring 8 to drive the block 9 to re-block the hole of the ball groove 5, thereby effectively preventing the backflow of the liquid.

[0038] After the analytical liquid enters, it is necessary to connect the gas supply system through the position of the gas inlet tube 11 and the connecting sleeve 20 to help atomize the sample and introduce it into the ion source of the mass spectrometer. At this time, the connecting sleeve 20 can be sleeved on the outside of the external pipeline to allow the gas to pass through the connecting sleeve 20 and the connecting tube 19 and then flow into the air inlet pipe 21 through the holes of the top block 13 and the bottom block 12, and finally flow into the mist chamber 1. During this process, the user can observe the outlet flow of the air inlet pipe 21 through the transparent material of the mist chamber 1, and cooperate with the rotating adjustment ring 18 to drive the top block 13 to cover the hole of the bottom block 12 at the bottom through the connection of the link 17, so as to adjust the gas flow rate entering the air inlet pipe 21 from the gas inlet tube 11, and then cooperate with the spring 2 15 in the extension of the top block 13 to press the limit block 16 to slide on the inner wall of the gas inlet tube 11, so that the user can accurately adjust the flow rate through the resistance of the limit block 16 sliding on the outside of the gas inlet tube 11.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quartz mist chamber for an inductively coupled plasma mass spectrometer, comprising a mist chamber (1), characterized in that: The left side of the mist chamber (1) is fixedly connected to a liquid inlet pipe (2), the outside of the liquid inlet pipe (2) is rotatably connected to a protective sleeve (3), the left side of the outside of the liquid inlet pipe (2) is provided with a threaded opening (4), the middle of the inside of the liquid inlet pipe (2) is provided with a ball groove (5), the upper and lower sides of the inside of the ball groove (5) are fixedly connected to support blocks (6), the adjacent sides of the two support blocks (6) are fixedly connected to through-hole blocks (7), the left side of the inside of the through-hole blocks (7) is fixedly connected to a spring 1 (8), the left end of the spring 1 (8) is fixedly connected to a blocking block (9), the middle of the right side of the blocking block (9) is fixedly connected to a connecting rod (10), the middle of the top of the mist chamber (1) is fixedly connected to a gas inlet pipe (11), the top of the inside of the gas inlet pipe (11) is fixedly connected to a bottom block (12), the top of the inside of the gas inlet pipe (11) is slidably connected to a top block (13), and a limiting component is provided on the outside of the top block (13).

2. A quartz mist chamber for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The limiting assembly comprises a plurality of grooves (14), a plurality of springs (15), a plurality of limiting blocks (16), a link (17), an adjusting ring (18), a connecting pipe (19) and a connecting sleeve (20); the groove (14) is arranged outside the top block (13); one end of the spring (15) away from the adjusting ring (18) is fixedly connected to the inner wall of the groove (14); one end of the spring (15) close to the adjusting ring (18) is fixedly connected to one end of the limiting block (16) away from the adjusting ring (18); the top end of the top block (13) is fixedly connected to the bottom end of the link (17); the outside of the link (17) is fixedly connected to the inner wall of the adjusting ring (18); the outside bottom end of the connecting pipe (19) is slidably connected to the inner wall of the adjusting ring (18); and the top end of the connecting pipe (19) is fixedly connected to the bottom end of the connecting sleeve (20).

3. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: An air inlet pipe (21) is fixedly connected to the top end of the inner wall of the mist chamber (1), and the top end of the air inlet pipe (21) is fixedly connected to the bottom end of the gas inlet pipe (11).

4. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The left outer portion of the blocking block (9) contacts the inner wall of the ball groove (5), the spring 1 (8) is sleeved on the outside of the connecting rod (10), and the through hole block (7) is sleeved on the outside of the connecting rod (10).

5. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The outside of the limit block (16) is slidably connected to the inner wall of the groove (14), and the outside of the limit block (16) is slidably connected to the top end of the inner wall of the gas inlet pipe (11).

6. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The bottom end of the connecting ring (17) is slidably connected to the top end of the gas inlet pipe (11), and the top end of the connecting ring (17) is slidably connected to the bottom end of the connecting pipe (19).

7. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The inside of the adjustment ring (18) is slidably connected to the outer top end of the gas inlet pipe (11).

8. The quartz mist chamber for inductively coupled plasma mass spectrometer according to claim 1, characterized in that: A waste liquid discharge port (22) is fixedly connected to the middle of the bottom end of the mist chamber (1), and a rubber collecting sleeve (23) is movably connected to the outside of the waste liquid discharge port (22).

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