A spray chamber for mass spectrometer that eliminates vacuum effect of waste liquid discharge

Abstract

The invention relates to a mass spectrometer atomization chamber for eliminating the vacuum effect of waste liquid discharge, which is applied to the field of mass spectrometer atomization chambers. A first pressure balancing valve, a flow rate regulator, a second pressure balancing valve and a free fall retarder are used to form a dual pressure balancing mechanism and a free fall retarding mechanism, which effectively alleviate the vacuum effect in the waste liquid discharge process in the atomization chamber body. The cooperation of an elastic sealing sheet, a cable tie, a sliding hoop and a falling ball can provide information prompts for sealing failure on the outside of a sealing plug and take targeted liquid sealing treatment. A blocking block is also used to strengthen the vertical constraint effect of the sliding hoop when it slides to the bottom end, so as to resist the recoil effect of subsequent leaked liquid. In addition, the cooperation of an annular sealing sheet, a connecting rod, a strip groove and a shaft rod is used to compensate and prompt when a gap appears on the inner side of the sealing plug, and the deformation of the annular sealing sheet is used to strengthen the sealing effect between the elastic sealing sheet and the surface of the waste liquid pipe.

Description

Technical Field

[0001] The invention relates to a spray chamber for a mass spectrometer, in particular to a spray chamber for a mass spectrometer which is applied in the field of spray chambers for mass spectrometers and can eliminate the vacuum effect of waste liquid discharge. Background Art

[0002] Inductively coupled plasma optical / mass spectrometer is an advanced instrument used for elemental analysis and isotope analysis. The sample solution is converted into aerosol through a nebulizer and enters the high-temperature plasma area, where it is ionized into charged particles at high temperatures. During its operation, waste liquid will be discharged from the atomization chamber to maintain the normal operation of the atomization chamber.

[0003] The specification of Chinese utility model patent CN218584714U discloses a mass spectrometer atomization chamber, which is used to screen the mist particles generated by the atomizer and then transport them to the mass spectrometer. The atomization chamber can improve sample utilization and screening efficiency, reduce the load of water and solvent on plasma, and has a simple manufacturing process, low cost, and helps to achieve a small volume, thereby shortening the injection time and flushing time and reducing the memory effect.

[0004] When discharging waste liquid, the existing atomization chamber discharges waste liquid through a single waste liquid pipe and a sealing plug. Targeted management of waste liquid discharge is not carried out, and targeted measures are not taken in time after the sealing plug fails, resulting in a vacuum effect when the waste liquid is discharged, which may lead to adverse consequences such as liquid column breakage and water hammer phenomenon, affecting the stability of waste liquid discharge work in the atomization chamber. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to carry out targeted treatment of the waste liquid and maintenance of the sealing plug when the waste liquid is discharged from the atomization chamber to eliminate the vacuum effect during the waste liquid discharge process.

[0006] In order to solve the above problems, the present invention provides a mass spectrometer atomization chamber that eliminates the vacuum effect of waste liquid discharge, comprising an atomization chamber body, a sample inlet tube is provided on the side surface of the atomization chamber body, a sample outlet tube is installed through the top surface of the atomization chamber body, a waste liquid pipe is installed at the bottom of the atomization chamber body, a sealing plug is threadedly connected to the bottom end of the inner wall of the waste liquid pipe, an elastic sealing sheet is installed at the bottom of the sealing plug, a receiving pipe is threadedly connected to the inner thread of the sealing plug, a flow rate regulator is installed on the surface of the receiving pipe, a free fall retarder is connected to the water outlet of the receiving pipe, a first pressure balancing valve located between the flow rate regulator and the free fall retarder is installed on the surface of the receiving pipe, the water outlet of the free fall retarder is connected to the waste liquid collection tank through a pipeline, and a second pressure balancing valve is installed on the surface of the pipeline;

[0007] A limit block is provided on the surface of the waste liquid pipe near the bottom end, a cable tie is glued to the bottom of the elastic sealing sheet, and a sliding hoop is slidably connected to the bottom of the elastic sealing sheet. A plurality of falling balls arranged around the receiving tube are connected to the surface of the sliding hoop through a connecting rod, and an elastic tube is penetrated and connected to the surface of the falling ball, and the tail end of the elastic tube is connected to the area of ​​the elastic sealing sheet near the sealing plug.

[0008] In the above-mentioned mass spectrometer nebulizer chamber that eliminates the vacuum effect of waste liquid discharge, a dual pressure balance mechanism and a free fall deceleration mechanism are provided to effectively alleviate the vacuum effect during the waste liquid discharge process in the nebulizer chamber body, and can also provide information prompts for sealing failure on the outside of the sealing plug and take targeted liquid sealing treatments.

[0009] As a further improvement of the present application, the elastic sealing sheet is placed horizontally in the initial state, and is turned outward when installed on the waste liquid pipe, and the friction force between the sliding hoop and the surface of the elastic sealing sheet is the same as the sum of the gravity of the falling ball, the sliding hoop and the connecting rod.

[0010] As a further improvement of the present application, when the elastic sealing sheet is turned outward, the cable tie is located above the sliding hoop, and the sliding hoop is slidably connected to the surface of the elastic sealing sheet in the turned-out state.

[0011] As a further improvement of the present application, an annular scoop plate is installed at the bottom of the sealing plug, and the scoop plate is located below the waste liquid pipe. When the elastic sealing sheet is turned outward, the part close to the bottom is located inside the scoop plate, and a baffle close to the waste liquid pipe is installed at the top of the scoop plate. The sum of the ring diameters of the baffle and the sliding hoop is equal to the ring diameter value of the scoop plate projected in the vertical direction.

[0012] As a further improvement of the present application, the surface of the side of the scoop plate facing away from the enclosure is in contact with the surface of the receiving tube, and an annular sealing piece made of water-swellable material is embedded and installed on the surface of the scoop plate close to the receiving tube.

[0013] As another improvement of the present application, the connection mode between the connecting rod and the sliding hoop is replaced by a hinge, and the connection position between the connecting rod and the sliding hoop is located on the surface of the sliding hoop away from the sealing plug, the interior of the connecting rod is provided with a strip groove whose length is less than half of the length of the connecting rod, the interior of the scoop is provided with a socket corresponding to the connecting rod, and the diameter of the socket is larger than the diameter of the connecting rod, and an axle rod is rotatably installed inside the socket.

[0014] As another improved supplement of the present application, the diameter of the shaft is not greater than the cross-sectional width of the strip groove, and an annular groove penetrating the insertion hole is provided inside the scoop plate, and the annular groove matches the annular sealing sheet.

[0015] As another improvement of the present application, the blocking block includes a plurality of depressions designed on the surface of the waste liquid pipe, each depression is connected to a return spring, and the end of the return spring is connected to a wedge block.

[0016] As a further improvement supplement of the present application, the wedge block exposes the interior of the depression in the initial state, and the depth of the depression is greater than the maximum cross-sectional width of the wedge block, and the cross-section of the wedge block is designed to be narrow at the top and wide at the bottom.

[0017] To sum up, the present application can not only provide a dual pressure balance mechanism and a free fall deceleration mechanism to effectively alleviate the vacuum effect during the waste liquid discharge process in the atomization chamber body, but also provide information prompts for sealing failure on the outside of the sealing plug and take targeted liquid sealing treatments. It can also use blocking blocks to strengthen the vertical constraint effect when the sliding hoop slides to the bottom to resist the recoil effect of subsequent leaked liquid. In addition, it can also compensate and prompt when gaps appear on the inside of the sealing plug, and use the deformation of the annular sealing piece to strengthen the sealing effect between the elastic sealing piece and the surface of the waste liquid pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the first to third embodiments of the present application;

[0019] Figure 2 This is an installation diagram of a waste liquid pipe, a sealing plug, an elastic sealing sheet, and a receiving pipe according to a first embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the elastic sealing sheet after being turned outward in the first embodiment of the present application;

[0021] Figure 4 For this application Figure 3 The structure diagram at A is enlarged;

[0022] Figure 5 This is a schematic diagram of the installation of the pan in the first embodiment of the present application;

[0023] Figure 6 This is a state diagram of a first embodiment of the present application in which a crack appears on the outside of the sealing plug and liquid leaks into the pocket formed by the eversion of the elastic sealing sheet;

[0024] Figure 7 This is a schematic diagram of the state of liquid contained in the pocket formed by the sliding hoop falling and squeezing the elastic sealing sheet to turn outward in the first embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of the installation of the scoop plate, the strip groove and the annular sealing sheet of the second embodiment of the present application;

[0026] Fig. 9 This is a schematic diagram of the state in which a crack appears on the inner side of the sealing plug in the second embodiment of the present application and liquid leaks out, causing the annular sealing sheet to expand and push the connecting rod to tilt and squeeze the sliding hoop;

[0027] Fig.10 This is a schematic diagram of the installation of the blocking block of the third embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Atomization chamber body; 101. Sample inlet tube; 102. Sample outlet tube; 2. Receiving tube; 3. Flow rate regulator; 4. First pressure balance valve; 5. Free fall retarder; 6. Second pressure balance valve; 7. Waste liquid collection tank; 8. Elastic sealing sheet; 81. Cable tie; 82. Sliding hoop; 83. Falling ball; 84. Elastic tube; 9. Sealing plug; 10. Shaft; 11. Wedge block; 12. Reset spring; 13. Pan; 14. Annular sealing sheet; 15. Strip groove. DETAILED DESCRIPTION

[0030] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figure 1 A mass spectrometer atomization chamber for eliminating the vacuum effect of waste liquid discharge is shown, comprising an atomization chamber body 1, a sample inlet tube 101 is provided on the side surface of the atomization chamber body 1, a sample outlet tube 102 is installed through the top surface of the atomization chamber body 1, a waste liquid pipe is installed at the bottom of the atomization chamber body 1, a sealing plug 9 is threadedly connected to the bottom end of the inner wall of the waste liquid pipe, an elastic sealing sheet 8 is installed at the bottom of the sealing plug 9, a receiving tube 2 is threadedly connected to the inner wall of the sealing plug 9, a flow rate regulator 3 is installed on the surface of the receiving tube 2, a free fall retarder 5 is connected to the water outlet of the receiving tube 2, a first pressure balancing valve 4 located between the flow rate regulator 3 and the free fall retarder 5 is installed on the surface of the receiving tube 2, the water outlet of the free fall retarder 5 is connected to a waste liquid collection tank 7 through a pipeline, and a second pressure balancing valve 6 is installed on the surface of the pipeline;

[0033] Figure 2-4 As shown, a limit block is provided on the surface of the waste liquid pipe near the bottom end, a cable tie 81 is glued to the bottom of the elastic sealing sheet 8, a sliding hoop 82 is slidably connected to the bottom of the elastic sealing sheet 8, and a plurality of falling balls 83 arranged around the receiving tube 2 are connected to the surface of the sliding hoop 82 through a connecting rod, an elastic tube 84 is penetrated and connected to the surface of the falling ball 83, and the tail end of the elastic tube 84 is connected to the area of ​​the elastic sealing sheet 8 near the sealing plug 9.

[0034] The elastic sealing sheet 8 is placed horizontally in the initial state. When installed on the waste liquid pipe, the elastic sealing sheet 8 is turned outward, and the friction force between the sliding hoop 82 and the surface of the elastic sealing sheet 8 is the same as the sum of the gravity of the falling ball 83, the sliding hoop 82 and the connecting rod.

[0035] When the elastic sealing sheet 8 is turned outward, the cable tie 81 is located above the sliding hoop 82, and the sliding hoop 82 is slidably connected to the surface of the elastic sealing sheet 8 in the turned-out state.

[0036] Specifically, before the waste liquid is discharged from the inside of the atomization chamber body 1, the sealing plug 9 is threadedly connected to the inside of the waste liquid pipe, and the outermost side of the elastic sealing sheet 8 is turned outward, so that the elastic sealing sheet 8 can be attached to the surface of the waste liquid pipe, and then the elastic sealing sheet 8 is tightly fastened to the outer surface of the waste liquid pipe with a cable tie 81, so that the turned-out elastic sealing sheet 8 can form a sealed space with the bottom of the sealing plug 9;

[0037] Then, the receiving tube 2 is threadedly connected to the inner side of the sealing plug 9 so that the outer surface of the receiving tube 2 is in contact with the surface of the scoop plate 13. When discharging the liquid, the waste liquid in the atomizing chamber body 1 is transferred to the receiving tube 2 through the waste liquid pipe. In this process, the speed of discharging the waste liquid can be adjusted by the flow rate regulator 3, and the first pressure balance valve 4 is used to balance the free fall retarder 5 with the internal pressure environment of the atomizing chamber body 1 to prevent the free fall vacuum surge caused by the pressure difference during the waste liquid discharge process; at the same time, the second pressure balance valve 6 is opened to ensure that the waste liquid collection tank 7 is connected to the outside atmosphere to prevent the generation of negative pressure in the waste liquid collection tank 7 and hinder the inflow of waste liquid; the flow rate regulator 3 controls the flow speed of the waste liquid in the free fall retarder 5 when the first pressure balance valve 4 is opened.

[0038] Through this dual pressure balance mechanism and free fall slow deceleration mechanism, the vacuum effect in the waste liquid discharge process in the atomization chamber body 1 is effectively alleviated. In addition, when there is a sealing problem on the outside of the sealing plug 9, the pressure balance state is destroyed. At this time, the waste liquid in the waste liquid pipe will flow into the sealed space through the gap on the outside of the sealing plug 9. Since the falling ball 83 is in a balanced state in the initial state (the friction force between the sliding hoop 82 and the surface of the elastic sealing sheet 8 is the same as the sum of the gravity of the falling ball 83, the sliding hoop 82 and the connecting rod), after the liquid enters the sealed space, the waste liquid will be transferred to the falling ball through the elastic tube 84. 83 (because the penetration position of the elastic tube 84 is located in the area of ​​the elastic sealing sheet 8 close to the sealing plug 9, the elastic tube 84 is located at the bottom of the sealed space after the elastic sealing sheet 8 is turned outward), so that the balance state of the falling ball 83 is destroyed, and then it falls, driving the sliding hoop 82 to fall. When the sliding hoop 82 falls, it is continuously squeezed and used in conjunction with the scoop plate 13, so that the waste liquid in the sealed space can be returned to the waste liquid pipe along the outer gap of the sealing plug 9. At the same time, due to the self-weight of the falling ball 83, the sliding hoop 82 gradually moves to the position of the waste liquid pipe close to the bottom of the surface (such as Figure 6-7 shown);

[0039] Figure 5As shown, an annular scoop plate 13 is installed at the bottom of the sealing plug 9, and the scoop plate 13 is located below the waste liquid pipe. When the elastic sealing sheet 8 is turned outward, the part close to the bottom is located in the scoop plate 13, and the top of the scoop plate 13 is installed with a baffle close to the waste liquid pipe. The sum of the ring diameters of the baffle and the sliding hoop 82 is equal to the ring diameter value of the scoop plate 13 projected in the vertical direction. Since the pocket formed by the elastic sealing sheet 8 is elastic, when the sliding hoop 82 falls, the liquid in the pocket will accumulate in the lower half of the pocket and gradually expand, and it is impossible to prevent the liquid in the gap outside the sealing plug 9 from continuing to flow out. Therefore, the scoop plate 13 is designed to support and lift the lower part of the pocket bag and limit the deformation space of the pocket bag, so that when the sliding hoop 82 moves to the position close to the bottom end of the waste liquid pipe, it can effectively squeeze and discharge the liquid, and use the reflux path formed after squeezing to seal the gap outside the sealing plug 9. The staff can know the type of problem of the sealing plug 9 through the position change of the falling ball 83.

[0040] The surface of the side of the scoop plate 13 facing away from the enclosure is in contact with the surface of the receiving pipe 2 , and an annular sealing piece 14 made of water-swellable material is embedded and installed on the surface of the scoop plate 13 close to the receiving pipe 2 .

[0041] Specifically, when a gap appears on the inner side of the sealing plug 9 (that is, the part connected to the receiving tube 2), the waste liquid is partially discharged to the outer surface of the receiving tube 2, and the annular sealing sheet 14 swells when it encounters water to achieve a water-proofing effect.

[0042] The second implementation method:

[0043] Figure 8 It is shown that the connection mode between the connecting rod and the sliding hoop 82 is replaced by a hinge, and the connection position between the connecting rod and the sliding hoop 82 is located on the surface of the sliding hoop 82 facing away from the sealing plug 9, the interior of the connecting rod is provided with a strip groove 15 whose length is less than half of the length of the connecting rod, the interior of the pan 13 is provided with a socket corresponding to the connecting rod, and the diameter of the socket is larger than the diameter of the connecting rod, and the diameter of the socket is larger than the diameter of the connecting rod, and the shaft rod 10 is rotatably installed inside the socket.

[0044] The diameter of the shaft rod 10 is not greater than the cross-sectional width of the strip groove 15 , and an annular groove penetrating the insertion hole is provided inside the scoop plate 13 , and the annular groove matches the annular sealing sheet 14 .

[0045] Different from the first embodiment, this embodiment improves the phenomenon that when a problem occurs on the inner side of the sealing plug 9 in the first embodiment, the corresponding phenomenon cannot be intuitively understood from the outside, and in this embodiment, the strip grooves 15 are symmetrically arranged about the shaft rod 10, so when the strip grooves 15 follow the sliding hoop 82 to fall to the lower end, the top of the strip grooves 15 contacts the surface of the shaft rod 10.

[0046] Specifically, Fig. 9It is shown that when a gap appears on the inner side of the sealing plug 9, the annular sealing piece 14 swells when it comes into contact with water, which can achieve the effect of sealing and waterproofing. At the same time, the end of the annular sealing piece 14 close to the shaft 10 will also expand and extend, thereby pushing the connecting rod to deflect (because the length of the strip groove 15 is less than half the length of the connecting rod, when the annular sealing piece 14 extends, it will drive the end of the connecting rod connected to the falling ball 83 to move away from the sealing plug 9, and the end connected to the sliding hoop 82 will be squeezed in the direction of the elastic sealing piece 8). This can strengthen the squeezing effect of the sliding hoop 82 on the elastic sealing piece 8, and at the same time, the type of problem with the sealing plug 9 can be judged by the deflection state of the falling ball 83 (because the deflection degree of the falling ball 83 is low, it is difficult to see with the naked eye, and an inclination sensor can be used to monitor and assist in judgment).

[0047] The third implementation method:

[0048] Fig.10 It is shown that a blocking block is also included. The blocking block includes a plurality of depressions designed on the surface of the waste liquid pipe. A return spring 12 is connected to each depression, and a wedge block 11 is connected to the end of the return spring 12.

[0049] The wedge block 11 exposes the interior of the depression in the initial state, and the depth of the depression is greater than the maximum cross-sectional width of the wedge block 11 . The cross-sectional design of the wedge block 11 is narrow at the top and wide at the bottom.

[0050] Different from the first embodiment, when the waste liquid is subsequently discharged, the liquid discharge pressure in the waste liquid pipe is relatively high, and the gravity of the falling ball 83 is insufficient to maintain the liquid seal, resulting in the phenomenon that the amount of liquid in the pocket increases again.

[0051] Specifically, when the sliding hoop 82 slides down, it passes through the wedge block 11, and then the wedge block 11 is squeezed into the recess. After the sliding hoop 82 falls below the wedge block 11, the wedge block 11 is reset, thereby limiting the sliding hoop 82.

[0052] In summary, the present application utilizes the first pressure balancing valve 4, the flow rate regulator 3, the second pressure balancing valve 6 and the free fall retarder 5 to form a dual pressure balancing mechanism and a free fall retarder 5, which effectively alleviates the vacuum effect in the waste liquid discharge process in the atomization chamber body 1, and utilizes the cooperation of the elastic sealing sheet 8, the cable tie 81, the sliding hoop 82 and the falling ball 83 to provide information prompts for sealing failure on the outside of the sealing plug 9 and take targeted liquid sealing treatments. The blocking block is also used to strengthen the vertical constraint effect when the sliding hoop 82 slides to the bottom end to resist the recoil effect of subsequent leakage liquid. In addition, the annular sealing sheet 14, the connecting rod, the strip groove 15 and the shaft rod 10 are used to compensate and prompt when gaps appear on the inside of the sealing plug 9, and the deformation of the annular sealing sheet 14 is used to strengthen the sealing effect between the elastic sealing sheet 8 and the surface of the waste liquid pipe.

[0053] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A spray chamber for a mass spectrometer that eliminates the vacuum effect of waste liquid discharge, comprising a spray chamber body (1), characterized in that: The side surface of the atomization chamber body (1) is provided with a sample inlet tube (101), the top surface of the atomization chamber body (1) is penetrated by a sample outlet tube (102), the bottom of the atomization chamber body (1) is provided with a waste liquid pipe, the bottom end of the inner wall of the waste liquid pipe is threadedly connected with a sealing plug (9), the bottom of the sealing plug (9) is provided with an elastic sealing sheet (8), the inner thread of the sealing plug (9) is connected with a receiving tube (2), the surface of the receiving tube (2) is provided with a flow rate regulator (3), the water outlet of the receiving tube (2) is connected with a free fall retarder (5), the surface of the receiving tube (2) is provided with a first pressure balancing valve (4) located between the flow rate regulator (3) and the free fall retarder (5), the water outlet of the free fall retarder (5) is connected with a waste liquid collection tank (7) through a pipeline, and the surface of the pipeline is provided with a second pressure balancing valve (6); A limit block is provided at a position near the bottom end of the surface of the waste liquid pipe, a cable tie (81) is glued to the bottom of the elastic sealing sheet (8), a sliding hoop (82) is slidably connected to the bottom of the elastic sealing sheet (8), a plurality of falling balls (83) arranged around the receiving tube (2) are connected to the surface of the sliding hoop (82) via a connecting rod, an elastic tube (84) is connected through the surface of the falling ball (83), and the tail end of the elastic tube (84) is connected to the area of ​​the elastic sealing sheet (8) near the sealing plug (9); The bottom of the sealing plug (9) is provided with an annular scoop plate (13), and the scoop plate (13) is located below the waste liquid pipe. When the elastic sealing sheet (8) is turned outward, the portion close to the bottom is located inside the scoop plate (13), and the top of the scoop plate (13) is provided with a baffle close to the waste liquid pipe, and the sum of the annular diameters of the baffle and the sliding hoop (82) is equal to the annular diameter value of the scoop plate (13) projected in the vertical direction. When the elastic sealing sheet (8) is turned outward, the cable tie (81) is located above the sliding hoop (82), and the sliding hoop (82) is slidably connected to the surface of the elastic sealing sheet (8) in the turned-out state; When installed on the waste liquid pipe, the elastic sealing sheet (8) is turned outward, so that the elastic sealing sheet (8) can be attached to the surface of the waste liquid pipe.

2. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 1, characterized in that: The elastic sealing sheet (8) is placed horizontally in an initial state. When installed on the waste liquid pipe, the elastic sealing sheet (8) is turned outward, and the friction force between the sliding hoop (82) and the surface of the elastic sealing sheet (8) is equal to the sum of the gravity of the falling ball (83), the sliding hoop (82) and the connecting rod.

3. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 1, characterized in that: The surface of the side of the scoop plate (13) facing away from the enclosure is in close contact with the surface of the receiving pipe (2), and an annular sealing sheet (14) made of a water-swellable material is embedded and installed on the surface of the scoop plate (13) close to the receiving pipe (2).

4. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 3, characterized in that: The connection mode between the connecting rod and the sliding hoop (82) is replaced by a hinge, and the connection position between the connecting rod and the sliding hoop (82) is located on the surface of the sliding hoop (82) facing away from the sealing plug (9), the interior of the connecting rod is provided with a strip groove (15) whose length is less than half of the length of the connecting rod, the interior of the scoop (13) is provided with a socket corresponding to the connecting rod, and the diameter of the socket is greater than the diameter of the connecting rod, and a shaft (10) is rotatably installed inside the socket.

5. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 4, characterized in that: The diameter of the shaft rod (10) is not greater than the cross-sectional width of the strip groove (15), and an annular groove penetrating the insertion hole is provided inside the scoop plate (13), and the annular groove matches the annular sealing sheet (14).

6. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 5, characterized in that: It also comprises a blocking block, which comprises a plurality of depressions designed on the surface of the waste liquid pipe, each of which is connected to a return spring (12), and the end of the return spring (12) is connected to a wedge block (11).

7. The spray chamber for mass spectrometer for eliminating the vacuum effect of waste liquid discharge according to claim 6, characterized in that: The wedge-shaped block (11) exposes the interior of the depression in an initial state, and the depth of the depression is greater than the maximum cross-sectional width of the wedge-shaped block (11), and the cross-sectional design of the wedge-shaped block (11) is narrow at the top and wide at the bottom.

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