Stable light-emitting device of ultraviolet lamp for analytical instrument

Abstract

The utility model belongs to the technical field of light-emitting devices, in particular to an ultraviolet lamp stable light-emitting device for an analytical instrument, which comprises an irradiation device and a driving device, the irradiation device comprises a shell, a light-gathering cover is mounted in the shell, three ultraviolet lamp tubes are mounted in the light-gathering cover, the rear end of the shell is fixedly connected with a mounting block, and the mounting block is fixedly connected with the driving device. And the mounting block is fixedly connected with a rotating shaft. According to the utility model, the three ultraviolet lamp tubes in triangular arrangement are matched with the light gathering cover to form a uniform and stable ultraviolet illumination area, so that the detection precision is improved; the bevel gear disc transmission and the driving shaft are matched with the rotating shaft, so that the angle of the irradiation device is accurately adjustable to adapt to different detection scenes; the light-transmitting glass isolates dust and impurities to guarantee the cleanness of a light path; the driving shaft is mounted on the driving box through a bearing seat to ensure stable transmission and low noise; the overall structure gives consideration to light source stability, angle flexibility and environmental adaptability, and the detection efficiency and reliability of an analytical instrument in scenes such as protein purification are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of A, specifically to a stable light-emitting device for an ultraviolet lamp used in analytical instruments. Background Technology

[0002] In fields such as biochemical analysis, drug development, and protein purification, ultraviolet (UV) detection technology is widely used because it can accurately monitor the characteristic absorption of substances (such as the absorption peaks of tyrosine and tryptophan in proteins at 280 nm). Traditional analytical instruments' UV lamp devices generally suffer from two major problems: first, insufficient light source stability, with lamp heating causing fluctuations in luminous intensity or wavelength shifts, affecting the accuracy of detection data; second, fixed illumination angles, making it difficult to adapt to different sizes of detection containers or complex optical path requirements, resulting in uneven illumination in the detection area and reduced analytical efficiency. Furthermore, existing devices have rudimentary heat dissipation structures and transmission mechanisms, which are prone to malfunctions due to heat accumulation or mechanical wear over long-term use, increasing maintenance costs.

[0003] Currently, most commercially available analytical instruments use a single lamp or a linear array of light sources for their UV lamps, resulting in narrow illumination coverage and poor uniformity. This is particularly problematic during protein purification, failing to meet the detection requirements of multi-channel chromatography columns or sample cells of varying heights. Regarding the drive structure, traditional gear transmissions or worm gear mechanisms suffer from large transmission gaps and low adjustment precision. Angle adjustments are prone to jamming or overshoot, making accurate positioning difficult. Furthermore, the lack of effective heat dissipation and dust protection designs means that heat generated during prolonged lamp operation can cause lens deformation or aging of light-transmitting elements, while external dust intrusion can contaminate the optical path, further reducing detection reliability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a stable light-emitting device for ultraviolet lamps used in analytical instruments, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A stable light-emitting device for ultraviolet lamps in analytical instruments includes an irradiation device and a driving device. The irradiation device includes a housing, a focusing hood is installed in the housing, three ultraviolet lamp tubes are installed in the focusing hood, and a mounting block is fixedly connected to the rear end of the housing. A rotating shaft is fixedly connected to the mounting block.

[0009] The drive unit includes a drive housing, a motor is fixedly connected to one side of the drive housing, the output end of the motor extends through the drive housing and is fixedly connected to a small bevel gear plate inside, a large bevel gear plate is meshed and connected to the surface of the small bevel gear plate, a drive shaft is fixedly connected to the center of the large bevel gear plate, and one end of the drive shaft extends through the drive housing and is fixedly connected to a rotating shaft.

[0010] Furthermore, a translucent glass is embedded in the front end of the outer casing in the area illuminated by the ultraviolet lamp.

[0011] Furthermore, the drive shaft is connected to a rotating shaft to rotate in both directions, thereby adjusting the angle of the irradiation device.

[0012] Furthermore, both ends of the drive shaft are rotatably connected to the inside of the drive housing via bearing seats.

[0013] Furthermore, the three ultraviolet lamps are arranged in a triangle, with a center-to-center distance of 25-35 mm between adjacent lamps, to form a uniform ultraviolet irradiation area.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a stable light-emitting device for ultraviolet lamps in analytical instruments, which has the following beneficial effects:

[0016] This invention utilizes three ultraviolet lamps arranged in a triangle, combined with a focusing cover, to form a uniform and stable ultraviolet illumination area, thereby improving detection accuracy. A bevel gear drive, working in conjunction with a drive shaft, allows for precise adjustment of the irradiation device angle, adapting to different detection scenarios. Transparent glass isolates dust and impurities, ensuring a clean optical path. The drive shaft is mounted in the drive housing via a bearing housing, ensuring smooth and low-noise transmission. The overall structure balances light source stability, angle flexibility, and environmental adaptability, significantly improving the detection efficiency and reliability of analytical instruments in scenarios such as protein purification. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the drive device of this utility model.

[0020] In the diagram: 1. Outer shell; 2. Concentrator; 3. Ultraviolet lamp; 4. Transparent glass; 5. Mounting block; 6. Shaft; 7. Drive box; 8. Motor; 9. Small bevel gear; 10. Large bevel gear; 11. Drive shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] like Figure 1-3 As shown in the figure, an embodiment of the present invention provides a stable light-emitting device for an analytical instrument ultraviolet lamp, which includes an irradiation device and a driving device. The irradiation device includes a housing 1 to protect the internal optical components, provide structural support, and vent ultraviolet light through a front-end transparent glass 4.

[0024] A light-concentrating cover 2 is installed in the outer shell 1 to concentrate the light emitted by the ultraviolet lamp tube 3, thereby increasing the light intensity and concentration and ensuring uniform illumination in the detection area.

[0025] The focusing cover 2 is equipped with three ultraviolet lamps 3 that emit ultraviolet light and serve as the main light source; the triangular arrangement can expand the irradiation range and form a uniform illumination area, which is suitable for the detection needs of analytical instruments.

[0026] A mounting block 5 is fixedly connected to the rear end of the outer shell 1, and a rotating shaft 6 is fixedly connected to the mounting block 5, serving as a connection hub between the irradiation device and the drive device. The irradiation angle can be adjusted by rotating the rotating shaft 6.

[0027] The drive unit includes a drive housing 7, which serves as the housing of the drive unit, protects the transmission mechanism, and provides mounting support;

[0028] A motor 8 is fixedly connected to one side of the drive box 7 to provide a power source, which drives the entire transmission system by rotating the small bevel gear 9.

[0029] The output end of the motor 8 extends through the drive box 7 and is fixedly connected to the small bevel gear disk 9 inside. The surface of the small bevel gear disk 9 is meshed with a large bevel gear disk 10. The rotational motion of the motor 8 is transmitted to the drive shaft 11 through gear transmission to ensure the smoothness of the angle adjustment of the irradiation device.

[0030] A drive shaft 11 is fixedly connected to the center of the large bevel gear plate 10. One end of the drive shaft 11 passes through the drive box 7 and is fixedly connected to the rotating shaft 6, transmitting the power of the drive device to the irradiation device. The irradiation angle is adjusted by rotating the rotating shaft 6 in both forward and reverse directions.

[0031] The working principle of this UV lamp stable light-emitting device is as follows: After the motor 8 starts, it outputs power to drive the small bevel gear disk 9 to rotate. Through meshing transmission, the large bevel gear disk 10 drives the drive shaft 11 to rotate. The drive shaft 11 is connected to the rotating shaft 6, thereby realizing the forward and reverse rotation angle adjustment of the irradiation device around the rotating shaft 6. In the irradiation device, three UV lamp tubes 3 arranged in a triangle are installed in the condenser hood 2. After being powered on, they emit UV light. The condenser hood 2 focuses the light and emits it through the light-transmitting glass 4 at the front end of the outer shell 1 to form a uniform and stable UV irradiation area. The two ends of the drive shaft 11 rotate in the drive box 7 through bearing seats to ensure the smoothness of angle adjustment. Finally, the angle-adjustable stable UV light source meets the detection requirements of the analytical instrument.

[0032] like Figure 1 As shown, in some embodiments, a translucent glass 4 is embedded in the front end of the housing 1 in the illumination area of ​​the ultraviolet lamp tube 3, allowing ultraviolet rays to pass through while isolating external dust and impurities and protecting the internal lamp tube and the focusing cover 2.

[0033] like Figure 2 As shown, in some embodiments, the drive shaft 11 is connected to the rotating shaft 6 to rotate in both directions to adjust the angle of the irradiation device.

[0034] like Figure 3 As shown, in some embodiments, the two ends of the drive shaft 11 are rotatably connected to the inside of the drive housing 7 via bearing seats to ensure the stability of the transmission connection.

[0035] like Figure 1 As shown, in some embodiments, the three ultraviolet lamps 3 are arranged in a triangle, and the center distance between adjacent lamps is 25-35mm, so as to form a uniform ultraviolet irradiation area and achieve uniformity of focused light coverage.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stable light-emitting device for an analytical instrument's ultraviolet lamp, comprising an irradiation device and a driving device, characterized in that: The irradiation device includes a housing (1), a focusing cover (2) is installed in the housing (1), three ultraviolet lamp tubes (3) are installed in the focusing cover (2), a mounting block (5) is fixedly connected to the rear end of the housing (1), and a rotating shaft (6) is fixedly connected to the mounting block (5). The drive unit includes a drive housing (7), a motor (8) is fixedly connected to one side of the drive housing (7), the output end of the motor (8) extends through the drive housing (7) and is fixedly connected to a small bevel gear disk (9), a large bevel gear disk (10) is meshed and connected to the surface of the small bevel gear disk (9), a drive shaft (11) is fixedly connected to the center of the large bevel gear disk (10), and one end of the drive shaft (11) extends through the drive housing (7) and is fixedly connected to a rotating shaft (6).

2. The ultraviolet lamp stabilizing device for analytical instruments according to claim 1, characterized in that: The front end of the outer shell (1) is fitted with a light-transmitting glass (4) in the area illuminated by the ultraviolet lamp tube (3).

3. The ultraviolet lamp stabilizing device for analytical instruments according to claim 1, characterized in that: The drive shaft (11) is connected to the rotating shaft (6) to rotate in both directions to adjust the angle of the irradiation device.

4. The ultraviolet lamp stabilizing device for analytical instruments according to claim 1, characterized in that: The two ends of the drive shaft (11) are rotatably connected to the inside of the drive box (7) through bearing seats.

5. The ultraviolet lamp stabilizing device for analytical instruments according to claim 1, characterized in that: The three ultraviolet lamps (3) are arranged in a triangle, with a center distance of 25-35 mm between adjacent lamps, to form a uniform ultraviolet irradiation area.

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