CN218447805U - Multi-section spiral atomizer - Google Patents

Abstract

The utility model discloses a multistage formula spiral atomizer, including coaxial coupling's multistage atomizing unit in proper order, every stage of atomizing unit is including advancing kind barrel and air inlet cylinder body, advance kind barrel and include interconnect's first pipe and first taper pipe, air inlet cylinder body includes interconnect's second pipe and second taper pipe, air inlet cylinder body cover locate advance kind barrel outside and with advance kind barrel between form first cavity, and the outer wall of first taper pipe and the inner wall of second taper pipe are parallel to each other, the outer wall of second pipe still the hoop equipartition have the intake pipe that a plurality of slopes set up, advance kind barrel's inner chamber, intake pipe and first cavity intercommunication, the port footpath of first taper pipe and second taper pipe at different levels steadilys decrease step by step, the opposite just admission speed that is located the slope direction of the intake pipe of adjacent level increases progressively step by step, the test solution exports after each atomizing unit step by step. The device greatly improves the use efficiency of the test solution, reduces the memory effect, and is favorable for compressing the sample and improving the sample introduction rate of the mass spectrometer.

Description

Multi-section spiral atomizer

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to multistage formula spiral atomizer.

Background

Liquid sampling devices of inductively coupled plasma mass spectrometers (ICP-MS) mainly include pneumatic atomizers, ultrasonic atomizers, high-pressure atomizers, and the like, wherein the conventional pneumatic atomizers are further classified into concentric atomizers, cross atomizers, and high-salt atomizers.

The concentric atomizer is used for atomizing the test solution into aerosol, guiding the aerosol into a torch tube or plasma through a fog chamber, and analyzing the negative pressure of the test solution caused by a pump or a Venturi effect to be sucked into the atomizer when in work. Specifically, the air flow is parallel to the capillary tube, the air flow rapidly passes through the end of the capillary tube, at the outlet of the capillary tube of the atomizer, because the flow rate of the carrier gas is very fast (about 150-200 m/s) and the flow rate of the test solution is slow, friction force is generated between the carrier gas and the test solution, the liquid flow is attenuated and is broken into fog drops by the impact of the air flow, and an initial aerosol flow, which is called primary aerosol, is formed. During the forward process of the primary aerosol, the primary aerosol is further refined under the action of the radial and tangential dynamic pressure of the airflow, the finer aerosol is sent into a torch tube or plasma by the carrier gas, and the unrefined aerosol is condensed and then discharged into a waste liquid container.

However, in the process of forming primary aerosol by the atomizer in the prior art, the collision between the air flow and the test solution is incomplete, so that more unrefined aerosol is easy to condense, and particularly, the central position of the test solution at the outlet of the capillary tube is easy to be further refined due to incomplete collision, so that the use efficiency of the sample is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned problem, provide a multistage formula spiral atomizer, can improve the availability factor of test solution, reduce memory effect to help the compression sample to improve the sampling rate of mass spectrograph.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a multistage formula spiral atomizer, a be used for atomizing into aerosol with the test solution, including coaxial coupling's multistage atomizing unit in proper order, every grade of atomizing unit is including advancing kind barrel and air inlet tube body, advance kind barrel and include interconnect's first pipe and first taper pipe, and the tip of first taper pipe outwards, air inlet tube body includes interconnect's second pipe and second taper pipe, and the tip of second taper pipe outwards, air inlet tube body cover locate outside the appearance barrel and with advance kind barrel between form first cavity, and the outer wall of first taper pipe and the inner wall of second taper pipe are parallel to each other, the outer wall of second pipe still hoop equipartition has the intake pipe that a plurality of slopes set up, advance kind barrel's inner chamber, intake pipe and first cavity intercommunication, the tip footpath of first taper pipe and second taper pipe at different levels is degressive step by step, the opposite in the incline direction of the intake pipe that is located adjacent grade and the admission speed progressively increases progressively step by step, test solution exports after each atomizing unit step by step.

Preferably, the multistage atomization unit comprises a first-stage atomization unit, a second-stage atomization unit and a third-stage atomization unit, the first-stage atomization unit comprises a first sample injection cylinder and a first air inlet cylinder, the second-stage atomization unit comprises a second sample injection cylinder and a second air inlet cylinder, the third-stage atomization unit comprises a third sample injection cylinder and a third air inlet cylinder, and the sample injection cylinder and the air inlet cylinder of the same level and the sample injection cylinder and the air inlet cylinder of the adjacent level are fixedly connected.

Preferably, the fixed connection is a weld or screw connection.

Preferably, a sample inlet pipe is further coaxially arranged on the first sample inlet cylinder, and the sample inlet pipe is located on the opposite side of the first conical pipe on the first sample inlet cylinder.

Preferably, the second sample feeding cylinder and the third sample feeding cylinder further comprise annular fixing seats, and the annular fixing seats are arranged on opposite sides of the first taper pipes on the corresponding sample feeding cylinders and are used for being hermetically connected with the second taper pipes of the previous-level air inlet cylinder and the second round pipes of the current-level air inlet cylinder.

Preferably, the number of the air inlet pipes of each air inlet cylinder is four.

Preferably, the air inlet pipe of each stage of atomizing unit is aligned between the first conical pipe and the second conical pipe.

Preferably, the multi-section spiral atomizer further comprises at least one sealing ring, and the sealing rings are correspondingly arranged between the sample feeding cylinder bodies and the air inlet cylinder bodies of adjacent stages one to one.

Compared with the prior art, the beneficial effects of the utility model are that:

the device utilizes the multi-stage atomization units to output the test solution after passing through each atomization unit step by step, if the device is three-stage, three air flows are formed to collide with the test solution, more refined aerosol is fully generated, each stage of air inlet pipe is obliquely arranged, the air inlet flow of each stage is enabled to form a spiral shape, the friction surface with the test solution is larger, the aerosolization effect is better, spiral air flows with smaller fog drops are generated, the spiral directions of the air inlet gases of adjacent stages are opposite, the speed difference between the spiral air flows and the test solution is further increased, the refinement degree of the test solution is improved, the waste of large fog drops is reduced, the use efficiency of the test solution is greatly improved, and the waste and a large amount of waste solution collection work are reduced; the generated aerosol can be in spiral airflow through the arrangement of the air inlet pipe, so that the memory effect is greatly reduced, the requirement on an atomizing chamber is reduced, and the aim of saving cost is fulfilled; and the outlet aperture of each stage is reduced step by step, which is beneficial to compressing the sample and improving the sample introduction rate of the mass spectrometer and the working efficiency.

Drawings

Fig. 1 is a schematic structural view of the multi-stage spiral atomizer of the present invention;

FIG. 2 is a front view of the multi-stage spiral atomizer of the present invention;

fig. 3 is a top view of the multi-section spiral atomizer of the present invention;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of the multi-stage spiral atomizer of the present invention;

fig. 5 is a schematic structural view of a second air inlet cylinder of the present invention;

fig. 6 is a schematic structural view of the third sample introduction cylinder of the present invention.

Description of reference numerals: 1. a first sample introduction cylinder; 2. a first air intake cylinder; 3. a second sample introduction cylinder; 4. a second air intake cylinder; 5. a third sample introduction cylinder; 6. a third air intake cylinder; 21. a first intake pipe; 7. a first seal ring; 8. a second seal ring; 41. a second intake pipe; 42. a second circular tube; 43. a second tapered tube; 51. a groove; 52. an annular fixed seat; 53. a first circular tube; 54. a first taper pipe; 61. and a third air inlet pipe.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As shown in figures 1-6, a multistage formula spiral atomizer for atomizing test solution into aerosol, including the multistage atomizing unit of coaxial coupling in proper order, every grade of atomizing unit is including advancing kind barrel and air inlet barrel, advance kind barrel including interconnect's first pipe and first taper pipe, and the tip of first taper pipe outwards, air inlet barrel includes interconnect's second pipe and second taper pipe, and the tip of second taper pipe outwards, air inlet barrel cover locate outside the appearance barrel and with advance kind barrel between form first cavity, and the outer wall of first taper pipe and the inner wall of second taper pipe are parallel to each other, the outer wall of second pipe still hoop equipartition has the intake pipe that a plurality of slopes set up, advance the inner chamber of kind barrel, intake pipe and first cavity intercommunication, the tip footpath of first taper pipe and second taper pipe at different levels diminishes step by step, the slope opposite direction and the admission speed that is located the intake pipe of adjacent level progressively increases progressively, test solution exports after each atomizing unit step by step.

The multi-stage spiral atomizer preferably comprises two or three stages of atomizing units, as shown in fig. 2, each stage of air inlet pipe is arranged in an inclined direction to form multi-stage spiral airflow, the rotating directions between adjacent stages are different, and the outlet apertures (namely the small end apertures of the first conical pipe and the second conical pipe) are gradually reduced, so that the sample compression is facilitated, the sample introduction rate is improved, the air inlet speed of each stage of air inlet pipe is gradually increased, and the aerosol formed at each stage is prevented from being decelerated. Meanwhile, a sealing element can be arranged between each two stages to improve the sealing effect, the two stages are sequentially and coaxially connected, and the connecting mode can be welding, adhesion or threaded connection and the like.

In one embodiment, the multi-stage atomization unit comprises a first-stage atomization unit, a second-stage atomization unit and a third-stage atomization unit, wherein the first-stage atomization unit comprises a first sample injection cylinder 1 and a first air inlet cylinder 2, the second-stage atomization unit comprises a second sample injection cylinder 3 and a second air inlet cylinder 4, the third-stage atomization unit comprises a third sample injection cylinder 5 and a third air inlet cylinder 6, and the sample injection cylinder and the air inlet cylinder of the same stage and the sample injection cylinder and the air inlet cylinder of the adjacent stage are fixedly connected.

In one embodiment, the fixed connection is a weld or screw connection.

In an embodiment, a sample inlet pipe is further coaxially disposed on the first sample inlet cylinder 1, and the sample inlet pipe is located at an opposite side of the first conical pipe on the first sample inlet cylinder 1.

In an embodiment, the second sample injection cylinder 3 and the third sample injection cylinder 5 further include annular fixing seats, and the annular fixing seats are disposed on opposite sides of the first conical pipe on the corresponding sample injection cylinder, and are used for being hermetically connected with the second conical pipe of the previous stage air inlet cylinder and the second circular pipe of the current stage air inlet cylinder.

In one embodiment, the number of the air inlet pipes of each air inlet cylinder is four. Specific quantity and bore size can be confirmed according to actual demand and are favorable to realizing through a plurality of intake pipes of evenly distributed that the collision is even, improve the availability factor of test solution.

In one embodiment, the air inlet pipe of each stage of atomizing unit is aligned between the first conical pipe and the second conical pipe. The high-speed airflow of the air inlet pipe is directly aligned to the small end of the first taper pipe (namely, the test solution outlet of the corresponding level), so that the gas deceleration can be avoided, and the high utilization rate is realized.

In an embodiment, the multi-section spiral atomizer further comprises at least one sealing ring, and the sealing rings are arranged between the sample feeding cylinder body and the air inlet cylinder body of the adjacent stages in a one-to-one correspondence manner. The specific number and the arrangement positions can be determined according to actual requirements and are used for sealing and avoiding air leakage.

Specifically, as shown in fig. 4, the multistage atomizing unit in this embodiment includes the one-level atomizing unit that from top to bottom (along the liquid flow direction promptly) connects gradually, second grade atomizing unit and tertiary atomizing unit, the one-level atomizing unit includes first kind barrel 1 and first air inlet barrel 2, be equipped with first intake pipe 21 on the first air inlet barrel 2, second grade atomizing unit includes that the second advances kind barrel 3 and second air inlet barrel 4, be equipped with second intake pipe 41 on the second air inlet barrel 4, tertiary atomizing unit includes that the third advances kind barrel 5 and third air inlet barrel 6, be equipped with third air inlet pipe 61 on the third air inlet barrel 6, advance kind barrel and air inlet barrel between the same grade and advance kind barrel and the equal fixed connection between the adjacent grade advances kind barrel and the air inlet barrel. As shown in fig. 5 and 6, the second air inlet cylinder 4 includes a second circular tube 42 and a second conical tube 43, the third sample inlet cylinder 5 includes an annular fixing seat 52, a first circular tube 53 and a first conical tube 54, which are connected in sequence, the annular fixing seat 52 may be a conical structure matched with the corresponding sample inlet cylinder and the air inlet cylinder, and a groove 51 for a built-in sealing ring, such as a built-in second sealing ring 8, may be opened thereon. The first sample feeding cylinder 1, the second sample feeding cylinder 3 and the third sample feeding cylinder 5 are identical or similar in structure and different in size, the second sample feeding cylinder 3 is also provided with an annular fixing seat and a groove for a built-in sealing ring, such as a built-in first sealing ring 7, and the first sample feeding cylinder 1 is also provided with a sample feeding pipe which can be connected in an integrated structure or a split type. The first air inlet cylinder 2, the second air inlet cylinder 4 and the third air inlet cylinder 6 have the same or similar structures and different sizes.

The working principle is as follows:

when the device is used, gases with different speeds are respectively input from each stage of gas inlet pipe, the gas speeds are gradually increased, for example, the gas speeds of the first-stage atomizing unit, the second-stage atomizing unit and the third-stage atomizing unit are 150m/s, 170m/s and 190m/s in sequence, a test solution is input from the sample inlet pipe, negative pressure is formed at the sample outlet of each stage of sample inlet cylinder along with the input of high-speed gas flow, the test solution is extracted from the sample outlet, aerosol of the previous stage can enter the next stage to be further refined through gas collision, full condensation of the gas and the liquid is continuously realized through spiral gas flow to form aerosol with higher refinement degree, and the aerosol can enter a mass spectrometer through the sample outlet of the last stage to be detected. Effectively improves the size and the quantity of the refined particles of the generated aerosol, thereby improving the use efficiency of the test solution.

The device utilizes the multi-stage atomization units to output the test solution after passing through each atomization unit step by step, if the device is three-stage, three air flows are formed to collide with the test solution, more refined aerosol is fully generated, each stage of air inlet pipe is obliquely arranged, the air inlet flow of each stage is enabled to form a spiral shape, the friction surface with the test solution is larger, the aerosolization effect is better, spiral air flows with smaller fog drops are generated, the spiral directions of the air inlet gases of adjacent stages are opposite, the speed difference between the spiral air flows and the test solution is further increased, the refinement degree of the test solution is improved, the waste of large fog drops is reduced, the use efficiency of the test solution is greatly improved, and the waste and a large amount of waste solution collection work are reduced; the generated aerosol can be in spiral airflow through the arrangement of the air inlet pipe, so that the memory effect is greatly reduced, the requirement on an atomizing chamber is reduced, and the aim of saving cost is fulfilled; and the outlet aperture of each stage is reduced step by step, which is beneficial to compressing samples and improving the sample introduction rate of the mass spectrometer and the working efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the more specific and detailed embodiments described in the present application, but not should be interpreted as limiting the scope of the claims of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (8)

1. The utility model provides a multistage formula spiral atomizer for become aerosol with test solution atomizing, its characterized in that: multistage formula spiral atomizer is including coaxial coupling's multistage atomizing unit in proper order, every level the atomizing unit is including advancing kind barrel and air intake barrel, advance kind barrel and include interconnect's first pipe and first taper pipe, just the tip of first taper pipe outwards, air intake barrel includes interconnect's second pipe and second taper pipe, just the tip of second taper pipe outwards, air intake barrel cover is located advance kind barrel outside and with advance and form first cavity between the kind barrel, just the outer wall of first taper pipe with the inner wall of second taper pipe is parallel to each other, the outer wall of second pipe still hoop equipartition has the intake pipe that a plurality of slopes set up, advance inner chamber, intake pipe and the first cavity intercommunication of kind barrel at different levels the tip footpath of first taper pipe and second taper pipe is decremented step by step, and the inclination opposite direction that is located the intake pipe of adjacent level and the air velocity is incremented step by step, the test solution passes through each step by step output behind the atomizing unit.

2. The multi-section spiral atomizer of claim 1 wherein: multistage atomizing unit includes one-level atomizing unit, second grade atomizing unit and tertiary atomizing unit, one-level atomizing unit includes that the first kind barrel (1) and the first barrel that admits air (2), second grade atomizing unit includes that the second advances kind barrel (3) and second barrel that admits air (4), tertiary atomizing unit includes that the third advances kind barrel (5) and third barrel that admits air (6), same rank advance between kind barrel and the barrel that admits air and adjacent rank advance equal fixed connection between kind barrel and the barrel that admits air.

3. A multi-segment spiral atomizer according to claim 2, wherein: the fixed connection is welding or screw connection.

4. The multi-section spiral atomizer of claim 2 wherein: still coaxial sample introduction pipe that is equipped with on first kind barrel (1), just sample introduction pipe is located the contralateral of first taper pipe on first kind barrel (1).

5. A multi-segment spiral atomizer according to claim 2, wherein: the second advances kind barrel (3) and third and advances kind barrel (5) and still all include cyclic annular fixing base, cyclic annular fixing base is located and is corresponded the offside of first taper pipe on advancing kind barrel is used for with last level the second taper pipe and the current level of the barrel of admitting air the second pipe sealing connection of the barrel of admitting air.

6. A multi-segment spiral atomizer according to claim 1, wherein: the number of the air inlet pipes of each air inlet cylinder body is four.

7. A multi-segment spiral atomizer according to claim 1, wherein: the air inlet pipe of each stage of the atomization unit is aligned between the first conical pipe and the second conical pipe.

8. The multi-section spiral atomizer of any one of claims 1 to 7, wherein: the multi-section spiral atomizer further comprises at least one sealing ring, and the sealing rings are arranged between the sample injection cylinder body and the air inlet cylinder body of the adjacent stages in a one-to-one correspondence mode.

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