An atomizing nozzle structure of an evaporative light scattering detector

Abstract

This utility model discloses an atomizing nozzle structure for an evaporative light scattering detector, relating to the field of evaporative light scattering detector technology. It includes a nozzle pipe and a main nozzle located at the front end of the nozzle pipe. Multiple side nozzles are symmetrically arranged around the main nozzle. A liquid guide pipe connects the side nozzles to the nozzle pipe. A connecting plate is fixedly mounted at the end of each side nozzle. A support shaft is fixedly inserted through the inside of the connecting plate. A mounting plate is rotatably fitted onto the shaft wall of the support shaft. The mounting plate is fixedly connected to the nozzle pipe. An angle adjustment mechanism for driving the side nozzles to swing is provided between the side nozzles and the nozzle pipe. This utility model allows the side nozzles to rotate according to detection requirements, thereby adjusting the atomization spray angle, resulting in a more uniform aerosol distribution in space, effectively expanding the coverage area after atomization, better adapting to eluents with different flow rates and volumes, and improving the accuracy and stability of the detection.

Description

Technical Field

[0001] This utility model relates to the field of evaporative light scattering detector technology, specifically to an atomizing nozzle structure for an evaporative light scattering detector. Background Technology

[0002] Evaporative light scattering (ELS) detectors are general-purpose detectors used in separation and analysis techniques such as high-performance liquid chromatography (HPLC). They require an nebulizer to atomize the sample into tiny droplets. For example, patent document CN222144950U discloses an atomizing nozzle for an ELS detector. This nozzle has a motor mounted on one side of the nozzle body, a rotating shaft at the motor's output end, and spiral blades on the surface of the rotating shaft to facilitate stirring of the liquid and ensure uniform mixing. In addition, a heat-insulating component is provided on the outer wall of the nozzle body to keep the liquid warm, facilitating subsequent detection.

[0003] However, the fixed spray range of the aforementioned atomizing nozzles results in uneven distribution of aerosols in space, reducing the coverage area after atomization. Consequently, it cannot adapt well to eluents with different flow rates and volumes, thus reducing detection accuracy. Utility Model Content

[0004] In view of the problems existing in the atomizing nozzle structure of the above-mentioned evaporative light scattering detector, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide an atomizing nozzle structure for an evaporative light scattering detector, which solves the problem that the spray range of the existing internal atomizing nozzle in the evaporative light scattering detector is fixed, reducing the uniformity of aerosol distribution in space and reducing detection accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An atomizing nozzle structure for an evaporative light scattering detector includes a nozzle pipe and a main nozzle located at the front end of the nozzle pipe. Multiple side nozzles are arranged symmetrically around the outside of the main nozzle, and a liquid guide pipe is connected between the side nozzles and the nozzle pipe.

[0008] A connecting plate is fixedly provided at the end of the side nozzle, a support shaft is fixedly passed through the inside of the connecting plate, and an mounting plate is rotatably sleeved on the shaft wall of the support shaft. The mounting plate is fixedly connected to the nozzle.

[0009] An angle adjustment mechanism for driving the side nozzle to swing is provided between the side nozzle and the nozzle pipe.

[0010] Preferably, the angle adjustment mechanism includes a sleeve, which is sleeved on the outside of the nozzle. The sleeve has a plurality of pull plates fixedly arranged in a circumferential symmetrical manner at its opening. The pull plates have racks fixedly arranged at their ends, and the racks are fitted with gears. The gears are fixedly sleeved with the support shaft.

[0011] Preferably, the outer wall of the nozzle is provided with external threads, and an internally threaded tube is threadedly fitted onto it, the internally threaded tube being rotatably inserted into the inside of the sleeve.

[0012] Preferably, a slider is fixedly provided at the bottom of the pull plate, and a guide rod is slidably provided inside the slider, and the guide rod is fixedly provided on the outer wall of the nozzle.

[0013] Furthermore, the slider has a through hole inside that cooperates with the guide rod to slide.

[0014] Preferably, the guide rod is a U-shaped rod.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. This utility model, through the provided nozzle, main nozzle, side nozzle, connecting plate, support shaft, mounting plate and angle adjustment mechanism, can rotate the side nozzle according to the detection requirements, thereby adjusting the atomization spray angle, so that the aerosol is more evenly distributed in space, effectively expanding the coverage area after atomization, and can better adapt to eluents with different flow rates and volumes, improving the accuracy and stability of detection.

[0017] 2. This utility model, through the provided slider, guide rod and through hole, can ensure that the rack and gear move stably in the lateral direction, and ensure the stable operation of the angle adjustment mechanism. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of part A;

[0021] Figure 3 This is a schematic diagram of the connection structure between the slider and the guide plate of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Nozzle; 2. Main nozzle; 3. Side nozzle; 4. Liquid guide tube; 5. Connecting plate; 6. Support shaft; 7. Mounting plate; 8. Sleeve; 9. Pull plate; 10. Rack; 11. Gear; 12. External thread; 13. Internal thread tube; 14. Slider; 15. Guide rod; 16. Through hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model discloses an atomizing nozzle structure for an evaporative light scattering detector.

[0026] This utility model provides, for example Figure 1-3 The atomizing nozzle structure of an evaporative light scattering detector shown includes a nozzle 1 and a main nozzle 2 located at the front end of the nozzle 1. Multiple side nozzles 3 are arranged symmetrically around the outside of the main nozzle 2. A liquid guide tube 4 is connected between the side nozzles 3 and the nozzle 1.

[0027] A connecting plate 5 is fixedly provided at the end of the side nozzle 3. A support shaft 6 is fixedly provided inside the connecting plate 5. A mounting plate 7 is rotatably sleeved on the shaft wall of the support shaft 6. The mounting plate 7 is fixedly connected to the nozzle 1.

[0028] An angle adjustment mechanism for driving the side nozzle 3 to swing is provided between the side nozzle 3 and the nozzle 1. The angle adjustment mechanism includes a sleeve 8, which is sleeved on the outside of the nozzle 1. Multiple pull plates 9 are fixedly provided at the opening of the sleeve 8 in a symmetrical arrangement around it. A rack 10 is fixedly provided at the end of the pull plate 9. A gear 11 is provided in cooperation with the rack 10. The gear 11 is fixedly sleeved with the support shaft 6.

[0029] In order to enable stable lateral engagement between gear 11 and rack 10, the rotation angle of the side nozzle 3 can be quickly adjusted, such as... Figure 2-3 As shown, the outer wall of the nozzle 1 is provided with an external thread 12, and an internal thread tube 13 is threadedly fitted on it. The internal thread tube 13 is rotatably inserted into the inside of the sleeve 8. A slider 14 is fixedly provided at the bottom of the pull plate 9. A guide rod 15 is slidably inserted inside the slider 14. The guide rod 15 is a U-shaped rod. A through hole 16 is provided inside the slider 14 to cooperate with the sliding of the guide rod 15. The guide rod 15 is fixedly provided on the outer wall of the nozzle 1.

[0030] Working principle: Before the evaporative light scattering detector starts working, the eluent flows in through the nozzle 1 and is distributed to the main nozzle 2 and each side nozzle 3 through the liquid guide tube 4;

[0031] When it is necessary to adjust the atomization spray angle, rotate the internal threaded tube 13. Since the internal threaded tube 13 is threadedly connected to the external thread 12 on the outer wall of the nozzle 1, and the internal threaded tube 13 is rotated through the inside of the sleeve 8, rotating the internal threaded tube 13 will cause it to move along the axial direction of the nozzle 1. When the internal threaded tube 13 moves, it will drive the sleeve 8 connected to it to move synchronously.

[0032] The pull plate 9 fixed at the opening of the sleeve 8 will move together with the sleeve 8. The rack 10 fixed at the end of the pull plate 9 will also move. The rack 10 and the gear 11 cooperate with each other. The movement of the rack 10 will drive the gear 11 to rotate. Because the gear 11 is fixedly sleeved with the support shaft 6, and the support shaft 6 passes through the connecting plate 5 and is rotatably sleeved on the mounting plate 7, when the gear 11 rotates, it will drive the support shaft 6 to rotate, thereby causing the connecting plate 5 connected to the support shaft 6 and the side nozzle 3 to swing around the support shaft 6.

[0033] During the movement of the pull plate 9, the slider 14 fixed at its bottom slides on the guide rod 15. The through hole 16 inside the slider 14 cooperates with the guide rod 15. The guide rod 15 is a U-shaped rod. This structural design ensures that the slider 14 can only move laterally along the direction of the guide rod 15, thereby ensuring that the rack 10 and gear 11 move stably in the lateral direction, so that the angle adjustment mechanism can operate stably and achieve precise adjustment of the rotation angle of the opposite nozzle 3.

[0034] By adjusting the angle of the side nozzle 3, the atomization spray direction of the side nozzle 3 is changed, making the aerosol sprayed from the side nozzle 3 more evenly distributed in space, effectively expanding the coverage area after atomization, and thus better adapting to eluents with different flow rates and volumes, improving the accuracy and stability of the evaporative light scattering detector.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An atomizing nozzle structure of an evaporative light scattering detector, comprising a nozzle tube (1) and a main nozzle head (2) arranged at the front end of the nozzle tube (1), characterized in that, The outer side of the main nozzle (2) is provided with a plurality of side nozzles (3) arranged in a surrounding symmetry, and a liquid guide pipe (4) is connected between the side nozzle (3) and the spray pipe (1); The end of the side nozzle (3) is fixedly provided with a connecting plate (5), the inside of the connecting plate (5) is fixedly provided with a supporting shaft (6), the shaft wall of the supporting shaft (6) is rotatably sleeved with a mounting plate (7), and the mounting plate (7) is fixedly connected with the spray pipe (1); An angle adjusting mechanism for driving the side nozzle (3) to swing is arranged between the side nozzle (3) and the spray pipe (1).

2. The nebulizing nozzle structure of an evaporative light scattering detector according to claim 1, wherein The angle adjusting mechanism comprises a sleeve pipe (8) sleeved on the outer side of the spray pipe (1), a plurality of pull plates (9) arranged in a surrounding symmetry are fixedly arranged at the pipe opening of the sleeve pipe (8), a rack (10) is fixedly arranged at the end of the pull plate (9), a gear (11) is cooperatively arranged, and the gear (11) is fixedly sleeved with the supporting shaft (6).

3. The nebulizing nozzle structure of an evaporative light scattering detector according to claim 2, wherein The outer wall of the spray pipe (1) is provided with an external thread (12), and an internally threaded pipe (13) is threadedly sleeved, the internally threaded pipe (13) is rotatably arranged in the inside of the sleeve pipe (8).

4. The nebulizing nozzle structure of an evaporative light scattering detector according to claim 2, wherein The bottom of the pull plate (9) is fixedly provided with a sliding block (14), the inside of the sliding block (14) is slidably provided with a guide rod (15), and the guide rod (15) is fixedly arranged on the outer wall of the spray pipe (1).

5. The nebulizing nozzle structure of an evaporative light scattering detector according to claim 4, wherein The inside of the sliding block (14) is provided with a through hole (16) matched with the sliding of the guide rod (15).

6. The nebulizing nozzle structure of an evaporative light scattering detector according to claim 4, wherein The guide rod (15) is a U-shaped rod.

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