Exhaust device of inductively coupled plasma mass spectrometer

Abstract

The utility model discloses an exhaust device of an inductively coupled plasma mass spectrometer, which comprises a waste gas pipeline and further comprises an adjustable one-way valve connected with the waste gas pipeline, the adjustable one-way valve is connected with a speed measuring pipeline provided with an anemograph, the speed measuring pipeline is connected with a filter cabinet provided with a sealing cover plate at the upper part, and the filter cabinet is connected with an exhaust pipeline. An inner cavity of the filter cabinet is provided with a filter cavity for accommodating a molecular sieve, two sides of the filter cabinet are provided with vent holes communicated with the molecular sieve, two sides of the filter cavity are both provided with clamping grooves for the molecular sieve to slide up and down, the upper parts of the two clamping grooves are both provided with inner grooves, and the inner grooves are connected with clamping and fixing parts which abut against the top ends of two sides of the molecular sieve; and the molecular sieve is fixed in the filtering cavity by the clamping and fixing part. Waste gas exhausted by the waste gas pipeline can be filtered, harm to the environment and workers is prevented, operation is easy, the molecular sieve is convenient to disassemble and replace, the gas displacement can be accurately controlled, and normal work of an instrument is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to inductance coupling plasma mass spectrometer technical field especially relates to a kind of exhaust device of inductance coupling plasma mass spectrometer. BACKGROUND

[0002] Inductance coupling plasma mass spectrometer (ICP-MS) is ionized into ion by high-frequency plasma under high temperature to the sample to be measured, and the ion generated is focused after passing through ion optical lens and enters quadrupole mass spectrometer analyzer according to mass-to-charge ratio separation, and the sample is quantitatively analyzed according to mass-to-charge ratio. After being processed into solution, the sample is changed into full solution by super-atomizing device and introduced into instrument, and is sprayed into plasma torch from nozzle by quartz tube. When sample aerosol enters plasma flame, most of them are immediately decomposed into excited state atoms and ions. When these excited particles recover to stable ground state, a certain amount of energy (in the form of light spectrum of a certain wavelength) is released, and by measuring the spectrum line and intensity of various elements, the types and contents of elements contained in the sample can be analyzed. It is widely used in environmental, biological, food, material and geological sample analysis.

[0003] ICP-MS needs auxiliary gas such as argon during work, and some waste gas will be produced during sample excitation decomposition, so it is necessary to configure an exhaust device for ICP-MS instrument to discharge the waste gas produced during sample excitation decomposition of ICP-MS instrument, and some auxiliary gas mixed with waste gas also needs to be discharged in time. However, the existing exhaust device only discharges waste gas without treating it, which will harm the environment and the workers; and the existing exhaust device cannot control the exhaust amount, and too fast or too slow exhaust is not conducive to the normal work of the instrument. SUMMARY

[0004] To solve the technical problems that the existing exhaust device does not treat waste gas, which will harm the environment and the workers, and cannot control the exhaust amount, and too fast or too slow exhaust is not conducive to the normal work of the instrument, the utility model provides the following technical solutions.

[0005] The utility model discloses an exhaust device of inductively coupled plasma mass spectrometer, including waste gas pipeline, still including the adjustable check valve who is connected with waste gas pipeline, the adjustable check valve is connected with the velocity pipe that is equipped with anemograph, the velocity pipe is connected with the filter cabinet that is equipped with the sealing cover plate in the upper portion, the filter cabinet is connected with the exhaust pipe, the filter cabinet inner chamber is equipped with the filter cavity that contains the molecular sieve, the filter cabinet both sides are equipped with the air hole that communicates with molecular sieve, the filter cavity both sides all are equipped with the carding slot that the molecular sieve slides up and down, two the carding slot upper portion all are equipped with the inner groove, the inner groove is connected with the clamping part that the both sides top of molecular sieve is pressed tightly, the clamping part fixes molecular sieve in the filter cavity.

[0006] As a further technical scheme, the clamping part includes a horizontally arranged telescopic sleeve fixedly connected with the inner groove and a first spring located at the outer periphery of the telescopic sleeve, and the telescopic sleeve has a clamping plate fixedly connected at the other end.

[0007] As a further technical scheme, the clamping plate is provided with an arc-shaped portion at the upper portion, so that the molecular sieve can be smoothly slid into the carding slot from the arc-shaped portion.

[0008] As a further technical scheme, the filter cavity is provided with a lifting component at the bottom, the lifting component includes a second spring fixedly connected with the bottom of the filter cavity and a lifting plate fixedly connected with the upper end of the second spring, and the upper portion of the lifting plate is in abutment with the molecular sieve.

[0009] As a further technical scheme, the lifting plate is provided with a matching groove at the upper portion, which matches the lower portion of the molecular sieve.

[0010] As a further technical scheme, the sealing cover plate is provided with an observation window for observing the molecular sieve and a screw connected with the filter cabinet, and the filter cabinet is provided with a screw hole matching the screw.

[0011] The utility model discloses an exhaust device of inductively coupled plasma mass spectrometer, including waste gas pipeline, still including the adjustable check valve who is connected with waste gas pipeline, the adjustable check valve is connected with the velocity pipe that is equipped with anemograph, the velocity pipe is connected with the filter cabinet that is equipped with the sealing cover plate in the upper portion, the filter cabinet is connected with the exhaust pipe, the filter cabinet inner chamber is equipped with the filter cavity that contains the molecular sieve, the filter cabinet both sides are equipped with the air hole that communicates with molecular sieve, the filter cavity both sides all are equipped with the carding slot that the molecular sieve slides up and down, two the carding slot upper portion all are equipped with the inner groove, the inner groove is connected with the clamping part that the both sides top of molecular sieve is pressed tightly, the clamping part fixes molecular sieve in the filter cavity. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the utility model;

[0013] Figure 2 is a connection schematic diagram in the filter cabinet of the utility model;

[0014] Figure 3 is a structure schematic diagram in the filter cavity of the utility model;

[0015] Figure 4 is a structure schematic diagram of the clamping component of the utility model;

[0016] Figure 5 is a structure schematic diagram of the jacking component of the utility model;

[0017] In the figure: 1-waste gas pipeline;2-adjustable check valve;3-velocity measuring pipeline;301-anemograph;4-filter cabinet;401-filter cavity;402-screw hole;403-vent hole;404-clamping groove;405-internal recess;5-sealing cover plate;501-observation window;502-screw;6-exhaust pipeline;7-clamping component;701-telescopic sleeve;702-first spring;703-clamping plate;704-arc portion;8-jacking component;801-second spring;802-jacking plate;803-adhesion groove;9-molecular sieve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and embodiment, and the utility model is further described in detail.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.It should be noted that the embodiments in the utility model and the features in the embodiment can be combined with each other without conflict.

[0019] In the description of the utility model, it should be understood that the terms "upper", "lower" are based on the orientation or positional relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0020] As Figure 1As shown, the exhaust device of the inductively coupled plasma mass spectrometer comprises a waste gas pipeline 1, the waste gas channel 1 is connected to the mass spectrometer gas outlet, and is used for discharging waste gas.

[0021] In a preferred embodiment, the waste gas pipeline 1 is connected with an adjustable one-way valve 2, and the adjustable one-way valve 2 is used for controlling the amount of waste gas discharged from the waste gas pipeline 1. The adjustable one-way valve 2 is connected with a velocity measuring pipeline 3 provided with an anemometer 301, and the waste gas from the waste gas pipeline 1 enters the test pipeline 3 through the adjustable one-way valve 2, and the discharge speed and exhaust amount of the waste gas in the test pipeline 3 are monitored in real time by the anemometer 301, and the adjustable one-way valve 2 is adjusted according to the monitored exhaust amount, thereby accurately controlling the exhaust amount of the waste gas pipeline 1.

[0022] As Figure 1 and Figure 2 As shown in the preferred embodiment, the velocity measuring pipeline 3 is connected with a filter cabinet 4 provided with a sealing cover plate 5 at the upper portion, and the filter cabinet 4 is connected with an exhaust pipeline 6, and the filtered waste gas in the filter cabinet 4 is discharged from the exhaust pipeline 6, and the filtered waste gas will not harm the environment and the workers.

[0023] The inner cavity of the filter cabinet 4 is provided with a filter cavity 401 containing molecular sieve 9, the molecular sieve 9 is used for filtering the waste gas, and only the filtered waste gas can be discharged, and the filter cabinet 4 is provided with air holes 403 in communication with the molecular sieve 9 on both sides, and the two air holes 403 are in communication with the test pipeline 3 and the exhaust pipeline 6 respectively. The molecular sieve 9 is connected with the filter cabinet 4 in a detachable manner, specifically, the filter cavity 401 is provided with a clamping groove 404 on both sides for the molecular sieve 9 to slide up and down, and the both ends of the molecular sieve 9 are provided with elastic sealing rings, and the molecular sieve 9 is pressed, and the both ends of the molecular sieve 9 slide relative to the two clamping grooves 404, until the molecular sieve 9 is in communication with the two air holes 403 of the filter cabinet 4, in this way, the waste gas enters the molecular sieve 9 from one end of the filter cabinet 4, and is discharged from the other end of the filter cabinet 4 after being filtered.

[0024] The sealing cover plate 5 can seal the filter cavity 401, at this time, one side of the sealing cover plate 5 is hinged to the filter cabinet 4, and the sealing cover plate 5 can be sealed or opened by rotating. The sealing cover plate 5 is provided with an observation window 501 for observing the molecular sieve 9 and a screw 502 connected with the filter cabinet 4, and the filter cabinet 4 is provided with a screw hole 402 matched with the screw 502, and the screw 502 and the screw hole 402 are matched to seal and fix the sealing cover plate 5 with the filter cabinet 4, and are convenient to disassemble subsequently. The transparent observation window 501 can observe the filling state of the molecular sieve 9 in the filter cavity 401, judge the use state of the molecular sieve, when the molecular sieve appears discoloration and obvious enrichment, the adjustable one-way valve 2 can be immediately closed, the sealing cover plate 5 is opened, and the new molecular sieve 9 is replaced.

[0025] AsFigure 3 and Figure 4 As shown in the preferred embodiment, the upper part of each of the two clamping grooves 404 is provided with an inner groove 405, and a clamping component 7 is connected to the inner groove 405 to abut against the top end of the molecular sieve 9 on both sides, thereby fixing the molecular sieve 9 in the filter cavity 401.

[0026] Specifically, the clamping component 7 includes a horizontally arranged telescopic sleeve 701 fixedly connected to the inner groove 405, and a first spring 702 located on the outer periphery of the telescopic sleeve 701, and the other end of the telescopic sleeve 701 is fixedly connected with a clamping plate 703 for clamping the molecular sieve 9. The telescopic sleeve 701 and the first spring 702 are preferably two groups and are fixedly connected to the clamping plate 703, facilitating the effective fixation of the clamping plate 703 to the molecular sieve 9. The upper part of the clamping plate 703 is provided with an arc-shaped portion 704 to facilitate the smooth sliding of the molecular sieve 9 into the clamping groove 404 from the arc-shaped portion 704. When a new molecular sieve 9 is put in, the molecular sieve 9 is directly pressed, the two ends of the molecular sieve 9 slide relative to the two clamping grooves 404, and the two ends of the molecular sieve 9 press the arc-shaped portion 704 and overcome the elastic force of the first spring 702, until the molecular sieve 9 is in communication with the two air holes 403 of the filter cabinet 4, at this time, the lower end of the molecular sieve 9 is fixed to the lower end of the clamping groove 404, the clamping plate 703 is popped out under the action of the first spring 702, and abuts against the upper end of the molecular sieve 9, so that the molecular sieve 9 is fixed in the clamping groove 404.

[0027] As shown in the preferred embodiment, the upper part of each of the two clamping grooves 404 is provided with an inner groove 405, and a clamping component 7 is connected to the inner groove 405 to abut against the top end of the molecular sieve 9 on both sides, thereby fixing the molecular sieve 9 in the filter cavity 401. Figure 3 and Figure 5 As shown in the preferred embodiment, the bottom of the filter cavity 401 is provided with a lifting component 8 for lifting the molecular sieve 9, and the lifting component 8 includes a second spring 801 fixedly connected to the bottom of the filter cavity 401, which can be one, two or more, and the upper end of the second spring 801 is fixedly connected with a lifting plate 802, when the molecular sieve 9 is normally installed in the clamping groove 404, the upper part of the lifting plate 802 abuts against the molecular sieve 9, and the upper part of the lifting plate 802 is provided with a fitting groove 803 matched with the lower part of the molecular sieve 9. When a new molecular sieve 9 needs to be replaced, the sealing cover plate 5 is opened, and the two clamping plates 703 are pushed outward with both hands, overcoming the elastic force of the two first springs 702, and then the two clamping plates 703 are separated from the fixation of the two upper ends of the molecular sieve 9, and under the elastic force of the second spring 801 of the lifting component 8, the molecular sieve 9 is popped up, thereby the molecular sieve 9 can be easily taken out and replaced.

[0028] The preferred specific embodiments and examples of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments and examples, and various changes or equivalent replacements can be made within the knowledge range possessed by the person skilled in the art without departing from the concept of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the application belong to the range protected by the utility model.

Claims

1. An exhaust device for an inductively coupled plasma mass spectrometer comprising an exhaust duct (1), characterized in that: Also include with the exhaust pipe (1) is connected with the adjustable check valve (2), the adjustable check valve (2) is connected with the velocity pipe (3) provided with anemometer (301), the velocity pipe (3) is connected with the filter cabinet (4) provided with a sealing cover plate (5) in the upper portion, the filter cabinet (4) is connected with the exhaust pipe (6), the filter cabinet (4) inner chamber is provided with the filter cavity (401) containing molecular sieve (9), both sides of the filter cabinet (4) are provided with the air hole (403) in communication with the molecular sieve (9), both sides of the filter cavity (401) are provided with the clamping groove (404) for the molecular sieve (9) to slide up and down, the upper portion of the two clamping grooves (404) is provided with the inner groove (405), the inner groove (405) is connected with the clamping component (7) that the both ends of the molecular sieve (9) are tightly pressed, the clamping component (7) fixes the molecular sieve (9) in the filter cavity (401).

2. The exhaust apparatus of the inductively coupled plasma mass spectrometer according to claim 1, characterized by: The clamping component (7) includes the horizontally arranged telescopic sleeve (701) fixedly connected with the inner groove (405) and the first spring (702) located on the outer periphery of the telescopic sleeve (701), the other end of the telescopic sleeve (701) is fixedly connected with the clamping plate (703) that clamps the molecular sieve (9).

3. The exhaust apparatus of the inductively coupled plasma mass spectrometer according to claim 2, characterized by: The clamping plate (703) is provided with an arc portion (704) in the upper portion, so that the molecular sieve (9) is smoothly slid into the clamping groove (404) from the arc portion (704).

4. The exhaust apparatus of the inductively coupled plasma mass spectrometer according to claim 1, characterized by: The filter cavity (401) is provided with the lifting component (8) that lifts the molecular sieve (9) in the bottom portion, the lifting component (8) includes the second spring (801) fixedly connected with the bottom portion of the filter cavity (401) and the lifting plate (802) fixedly connected with the upper end of the second spring (801), the upper portion of the lifting plate (802) is tightly pressed against the molecular sieve (9).

5. The exhaust apparatus of the inductively coupled plasma mass spectrometer according to claim 4, characterized by: The upper portion of the lifting plate (802) is provided with the fitting groove (803) matched with the lower portion of the molecular sieve (9).

6. The exhaust apparatus of the inductively coupled plasma mass spectrometer according to claim 1, characterized by: The sealing cover plate (5) is provided with an observation window (501) for observing the molecular sieve (9) and a screw (502) connected with the filter cabinet (4), and the filter cabinet (4) is provided with a screw hole (402) matched with the screw (502).

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