Atomizer capable of being used on plasma mass spectrometer

Abstract

The utility model discloses an atomizer capable of being used on a plasma mass spectrometer, which relates to the technical field of atomizers and comprises a bottom frame and an outer cover. An atomizer shell is arranged in the outer cover, and the atomizer shell is communicated with a feeding pipe and a mist outlet spraying pipe; a valve is arranged on the feeding pipe; a buoyancy mechanism is arranged in the atomizer shell; when the liquid level in the atomizer shell drops, the buoyancy mechanism opens the valve; otherwise, the buoyancy mechanism closes the valve. The valve is installed on the feeding pipe, the buoyancy mechanism is installed in the atomizer shell, the valve and the buoyancy mechanism work cooperatively, when the liquid level in the atomizer shell drops, the buoyancy mechanism enables the valve to be opened, and sample liquid and internal standard liquid in the feeding pipe can flow into the atomizer shell through the through hole and the discharging hole; when the liquid level in the atomizer shell rises, the buoyancy mechanism enables the valve to be closed so as to block the feeding pipe, and then the purpose of automatically closing and opening the feeding pipe according to the height of the water level of liquid in the atomizer shell is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to atomizer technical field, specifically, relate to a kind of atomizer that can be used on plasma mass spectrometer. BACKGROUND

[0002] Plasma mass spectrometer is divided into instrument and component analysis instrument, its feature is method fast, accurate and stability good, its main use: the analysis of rare earth elements or heavy metal elements etc..The liquid for analysis needs to be atomized before entering mass spectrometer sometimes.General atomization method is: the one end of inlet pipe is respectively connected into sample liquid and internal standard solution, so that the two are mixed in inlet pipe, then start external air source, gas flow passes through inlet pipe and is connected into atomization inner chamber of atomizer, under the driving of gas flow, sample liquid and internal standard solution enter atomization inner chamber, and are atomized into tiny droplets in atomization inner chamber, atomized droplet passes through discharge pipe and enters feed pipe, and finally enters mass spectrometer.

[0003] The utility model discloses a kind of atomizers for plasma mass spectrometer, and the atomizer for plasma mass spectrometer can be connected into feed pipe after being mixed and atomized to internal standard solution and sample liquid, to be connected into mass spectrometer.Therein, one end of inlet pipe is respectively connected into sample liquid and internal standard solution, so that sample liquid and internal standard solution are mixed in inlet pipe;Then start external air source, the gas flow spouted by external air source passes through inlet pipe and second pipe to be connected into atomization inner chamber, to drive sample liquid and internal standard solution into atomization inner chamber, and make sample liquid and internal standard solution be atomized in atomization inner chamber, after atomization, pass through discharge pipe and enter feed pipe, and finally enter mass spectrometer;That is, the atomizer for plasma mass spectrometer can automatically mix and atomize sample liquid and internal standard solution to be connected into mass spectrometer, atomization effect is good, and more time-saving and labor-saving.

[0004] For the related technology in the above, the inventor finds that there are the following defects: when sample liquid and internal standard solution enter the inside of atomizer body, cannot be added in time according to the amount of internal liquid, affect the normal atomization speed of atomizer, if internal liquid is not added in time, can cause atomizer to burn empty, damage atomizer itself, while delay normal use of atomizer, need personnel to observe in time, increase the labor amount of user. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the insufficient of prior art, and provides an atomizer that can be used on plasma mass spectrometer.

[0006] The utility model aims at overcoming the insufficient of prior art, and provides an atomizer that can be used on plasma mass spectrometer.

[0007] The utility model provides an atomizer can be used on plasma mass spectrometer, including the chassis and the cover of setting on above chassis, be provided with the atomizer casing in above cover, above atomizer casing is linked with the feed pipe and at least one mist spray pipe, the jet end of above mist spray pipe stretches to the outside of above cover, be provided with the valve for controlling the on -off of above feed pipe, be provided with the buoyancy mechanism of drive connection with above valve in above atomizer casing, when the liquid level in above atomizer casing falls, above buoyancy mechanism makes above valve open, otherwise above buoyancy mechanism makes above valve close.

[0008] Further, in the utility model, the valve includes a valve plate slidingly connected to the feed pipe and a connecting rod disposed on the valve plate, the valve plate has a through hole, the diameter of the through hole is smaller than the inner diameter of the feed pipe, and the valve plate blocks the feed pipe when the through hole is not communicated with the feed pipe; and the connecting rod is connected to the buoyancy mechanism at an end away from the valve plate.

[0009] Further, in the utility model, the buoyancy mechanism includes a floating plate located in the atomizer casing and a plug disposed on the top of the floating plate, the end of the feed pipe away from the valve extends into the atomizer casing and is slidingly connected to the atomizer casing, and the plug can block the end of the feed pipe located in the atomizer casing; and the connecting rod is connected to the floating plate at an end away from the valve plate.

[0010] Further, in the utility model, the end of the feed pipe located in the atomizer casing has a tapered structure, and the plug has a tapered counterbore away from the top wall of the floating plate and adapted to the tapered structure.

[0011] Further, in the utility model, the outer side wall of the atomizer casing is provided with an annular tube in communication therewith, and the mist spray pipe is communicated with the annular tube.

[0012] The utility model has the advantages that:

[0013] The utility model provides an atomizer that can be used on a plasma mass spectrometer, a valve is installed on a feed pipe, a buoyancy mechanism is installed in an atomizer casing, and the valve and the buoyancy mechanism work together, when the liquid level in the atomizer casing falls, the buoyancy mechanism opens the valve, and sample liquid and internal standard liquid in the feed pipe can flow into the interior of the atomizer casing through a through hole and a discharge hole; when the liquid level in the atomizer casing rises, the buoyancy mechanism closes the valve to block the feed pipe, thereby achieving the purpose of automatically closing and opening the feed pipe according to the water level of the liquid in the interior of the atomizer casing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses an atomizer that can be used on a plasma mass spectrometer, a valve is installed on a feed pipe, a buoyancy mechanism is installed in an atomizer casing, and the valve and the buoyancy mechanism work together, when the liquid level in the atomizer casing falls, the buoyancy mechanism opens the valve, and sample liquid and internal standard liquid in the feed pipe can flow into the interior of the atomizer casing through a through hole and a discharge hole; when the liquid level in the atomizer casing rises, the buoyancy mechanism closes the valve to block the feed pipe, thereby achieving the purpose of automatically closing and opening the feed pipe according to the water level of the liquid in the interior of the atomizer casing.

[0015] Figure 2 For Figure 1 is a sectional view;

[0016] Figure 3 is the assembly structure diagram of the valve and the buoyancy mechanism of the embodiment of the utility model;

[0017] Figure 4 is the exploded view of the local structure of the embodiment of the utility model.

[0018] In the drawing: 101 - base frame; 201 - cover; 301 - atomizer shell; 401 - feed pipe; 501 - mist spray pipe; 601 - valve plate; 602 - connecting rod; 603 - through hole; 701 - floating plate; 702 - block; 801 - ring pipe. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0021] An atomizer applicable to a plasma mass spectrometer, comprising a base frame 101 and a cover 201 installed on the base frame 101; an atomizer shell 301 is installed in the cover 201, the atomizer shell 301 is communicated with a feed pipe 401 and a plurality of mist spray pipes 501, and the spray end of any mist spray pipe 501 extends to the outside of the cover 201. In the embodiment, in order to facilitate the installation of the plurality of mist spray pipes 501, a ring pipe 801 communicated with the atomizer shell 301 is installed on the outer side wall of the atomizer shell 301, and any mist spray pipe 501 is communicated with the ring pipe 801. In addition, since the working principle of the atomizer is prior art, and other related structures of the atomizer in the embodiment are not shown in the drawing, the working principle of the atomizer will not be described in detail here.

[0022] In order to facilitate the control of the on-off of the feeding pipe 401 according to the liquid level in the atomizer shell 301, the valve can be opened when the liquid level in the atomizer shell 301 is lowered, so that the sample liquid and the internal standard liquid can be supplemented into the atomizer shell 301 through the feeding pipe 401; the valve can be closed when the liquid level in the atomizer shell 301 is raised, so that the sample liquid and the internal standard liquid cannot be injected into the atomizer shell 301 through the feeding pipe 401. Therefore, in order to realize the above scheme, a valve for controlling the on-off of the feeding pipe 401 is installed on the feeding pipe 401, and a buoyancy mechanism in transmission connection with the valve is installed in the atomizer shell 301, the buoyancy mechanism opens the valve when the liquid level in the atomizer shell 301 is lowered, and the buoyancy mechanism closes the valve when the liquid level in the atomizer shell 301 is raised.

[0023] Specifically, in the embodiment, the valve includes a valve plate 601 in sliding connection with the feeding pipe 401 and a connecting rod 602 installed on the valve plate 601, a through hole 603 is formed in the valve plate 601, and the diameter of the through hole 603 is smaller than the inner diameter of the feeding pipe 401. Figure 2 From the perspective of

[0024] Specifically, from the perspective of Figure 2 , the buoyancy mechanism in the embodiment includes a floating plate 701 located in the atomizer shell 301 and a plug 702 installed on the top of the floating plate 701, the feeding pipe 401 is in sliding connection with the atomizer shell 301, and the bottom end of the feeding pipe 401 extends into the atomizer shell 301. The bottom end of the feeding pipe 401 is designed as a conical structure, and the end is designed as a sealed structure, but a discharge hole (not labeled in the figure) is formed in the side wall of the conical structure, and the sample liquid and the internal standard liquid in the feeding pipe 401 can fall into the atomizer shell 301 through the discharge hole. A conical counterbore adapted to the conical structure is formed in the top wall of the plug 702, when the bottom end of the feeding pipe 401 is in complete abutment with the inner wall of the conical counterbore, the plug 702 can block the discharge hole at the bottom end of the feeding pipe 401, so that the sample liquid and the internal standard liquid in the feeding pipe 401 cannot fall into the atomizer shell 301 through the discharge hole. The bottom end of the connecting rod 602 is connected with the floating plate 701 through a bracket.

[0025] Working principle:

[0026] Mainly refer to Figure 2In use, the outer casing 201 is installed on the plasma mass spectrometer at the desired location using the base frame 101. The sample solution and internal standard solution then enter the nebulizer housing 301 through the feed pipe 401, and the nebulizer is started for nebulization. After the nebulizer has been operating for a period of time, the liquid level inside the nebulizer housing 301 gradually decreases. The float 701 moves downwards as the liquid level drops, and this downward movement of the float 701 pulls the valve plate 601 via the connecting rod 602, causing the valve plate 601 to move downwards synchronously. During this downward movement, the through hole 603 on the valve plate 601 connects with the inside of the feed pipe 401. When the through hole 603 connects with the inside of the feed pipe 401, the bottom end of the feed pipe 401 separates from the block 702, allowing the sample solution and internal standard solution in the feed pipe 401 to flow into the nebulizer housing 301 through the through hole 603 and the discharge hole. As the liquid level inside the atomizer housing 301 rises, the float plate 701 gradually moves upward. Under the action of the connecting rod 602, the valve plate 601 moves upward synchronously. When the through hole 603 is not connected to the inside of the feed pipe 401, the valve plate 601 blocks the feed pipe 401, thereby achieving the purpose of automatically closing and opening the feed pipe 401 according to the increase or decrease of the liquid inside the atomizer housing 301.

[0027] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A nebulizer usable in a plasma mass spectrometer, comprising a base (101) and an outer casing (201) disposed on the base (101); characterized in that: An atomizer housing (301) is provided inside the outer casing (201). The atomizer housing (301) is connected to a feed pipe (401) and at least one mist outlet pipe (501). The jet end of the mist outlet pipe (501) extends to the outside of the outer casing (201). A valve for controlling its own opening and closing is provided on the feed pipe (401). A buoyancy mechanism connected to the valve is provided inside the atomizer housing (301). When the liquid level in the atomizer housing (301) drops, the buoyancy mechanism causes the valve to open; otherwise, the buoyancy mechanism causes the valve to close.

2. The nebulizer that can be used in a plasma mass spectrometer according to claim 1, characterized in that: The valve includes a valve plate (601) slidably connected to the feed pipe (401) and a connecting rod (602) disposed on the valve plate (601). The valve plate (601) has a through hole (603) with a diameter smaller than the inner diameter of the feed pipe (401). When the through hole (603) is not connected to the feed pipe (401), the valve plate (601) blocks the feed pipe (401). The end of the connecting rod (602) away from the valve plate (601) is connected to the buoyancy mechanism.

3. The nebulizer that can be used in a plasma mass spectrometer according to claim 2, characterized in that: The buoyancy mechanism includes a float plate (701) located inside the atomizer housing (301) and a block (702) disposed on the top of the float plate (701). The end of the feed pipe (401) away from the valve extends into the atomizer housing (301) and is slidably connected to the atomizer housing (301). The block (702) can block the end of the feed pipe (401) located inside the atomizer housing (301). The end of the connecting rod (602) away from the valve plate (601) is connected to the float plate (701).

4. The nebulizer that can be used in a plasma mass spectrometer according to claim 3, characterized in that: The end of the feed pipe (401) located inside the atomizer housing (301) has a conical structure, and the top wall of the block (702) away from the float (701) has a conical sinkhole adapted to the conical structure.

5. The nebulizer that can be used in a plasma mass spectrometer according to claim 1, characterized in that: The outer wall of the atomizer housing (301) is provided with an annular pipe (801) that communicates with itself, and the mist outlet pipe (501) is connected to the annular pipe (801).

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