Protective device of laser raindrop spectrometer

Abstract

The utility model discloses a protection device of a laser raindrop spectrograph, which relates to the field of laser raindrop spectrographs and comprises a support, a laser transmitter and a laser receiver, mounting arms are arranged at the top of the support, the laser transmitter and the laser receiver are respectively and fixedly arranged at the upper ends of the two mounting arms, and the laser transmitter and the laser receiver are arranged on the support. Arc-shaped protective covers for shielding the laser transmitter and the laser receiver are fixedly mounted at the upper ends of the two mounting arms; and hollow blowing plates are fixedly arranged in the two arc-shaped protective covers, and the two hollow blowing plates are located above the optical window of the laser transmitter and the optical window of the laser receiver correspondingly. Through the synergistic effect of airflow blowing, hot air assistance and physical protection, the protection problem of the existing laser raindrop spectrometer in a dust environment is effectively solved, and the laser raindrop spectrometer has the advantages of efficient cleaning, environmental adaptation, measurement precision guarantee and the like, and is suitable for various outdoor scenes such as meteorological stations, hydrological monitoring stations and the like.

Description

Technical Field

[0001] This utility model relates to the field of laser raindrop spectrometers, and specifically to a protective device for a laser raindrop spectrometer. Background Technology

[0002] As a core device in the field of meteorological monitoring, the laser raindrop spectrometer achieves precise measurement of particle size distribution and rainfall intensity by scanning precipitation particles with a laser beam. Existing protective devices generally adopt an arc-shaped protective cover, aiming to reduce the impact of wind and rain through streamlined design. However, the optical windows of its core components—the laser transmitter and receiver—still need to be exposed to ensure the continuity of the optical path.

[0003] However, particles such as dust, pollen, and oil in the environment (e.g., PM2.5, PM10) easily adhere to the surface of the optical window, forming a shielding layer or scattering center. When the dust deposition thickness exceeds 0.1 mm, the laser transmittance can decrease by more than 30%, leading to attenuation of the light intensity signal at the receiving end, which in turn causes particle size measurement deviation or data interruption, affecting the measurement effect.

[0004] Therefore, a protective device for a laser raindrop spectrometer is proposed. Utility Model Content

[0005] In view of the problems existing in the current laser raindrop spectrometer, this utility model is proposed.

[0006] Therefore, the purpose of this invention is to provide a protective device for a laser raindrop spectrometer, which solves the problems mentioned in the background art.

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

[0008] A protective device for a laser raindrop spectrometer includes a bracket, a laser emitter, and a laser receiver. The bracket has mounting arms at its top. The laser emitter and laser receiver are respectively fixedly mounted on the upper ends of the two mounting arms. An arc-shaped protective cover that shields the laser emitter and laser receiver is fixedly mounted on the upper ends of the two mounting arms.

[0009] Hollow air-blowing plates are fixedly installed inside both of the arc-shaped protective covers. The two hollow air-blowing plates are respectively located above the optical window of the laser emitter and the optical window of the laser receiver. Multiple evenly distributed first air-blowing holes are opened on the lower surface of both hollow air-blowing plates. Connecting pipes are fixedly installed on the upper surface of both hollow air-blowing plates. Arc-shaped connecting plates are fixedly installed on the top of both arc-shaped protective covers. One end of each of the two connecting pipes is fixedly connected to the side wall of the two arc-shaped connecting plates.

[0010] A bellows is fixedly mounted on the side wall of the bracket, a dustproof fan is fixedly mounted on the side wall of the bellows, and two air guide pipes are fixedly mounted on the top of the bellows. The ends of the two air guide pipes away from the bellows are respectively fixedly connected to the side walls of the two arc-shaped connecting plates.

[0011] Preferably, a strip-shaped ventilation opening is provided at the upper end of the mounting arm and below the hollow air blowing plate.

[0012] Preferably, mounting feet are fixedly provided on both sides of the arc-shaped protective cover, and mounting bolts are provided on the mounting feet. The mounting feet are fixedly connected to the mounting arm by the mounting bolts.

[0013] Preferably, the arc-shaped connecting plate has a hollow structure, and the side wall of the arc-shaped connecting plate has a plurality of evenly distributed second air blowing holes, and the plurality of second air blowing holes are arranged to blow air towards the top of the arc-shaped protective cover.

[0014] Furthermore, a heater extending into the interior is inserted and installed on one side of the bellows.

[0015] Preferably, the arc-shaped protective cover is made of one-piece stainless steel.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] 1. This utility model uses a dustproof fan to drive airflow through an air duct to the arc-shaped connecting plate and the hollow air blowing plate. The airflow is sprayed onto the top of the arc-shaped protective cover and the surface of the optical window through the second air blowing hole and the first air blowing hole, respectively, forming a dual cleaning mechanism of top dust removal + window air curtain protection. This effectively prevents dust from adhering, keeps the optical window transparent, and ensures the stable operation of the laser raindrop spectrometer.

[0018] 2. This utility model heats the airflow by using a heater inside the air box. The hot air blown out can increase the kinetic energy of the airflow, more efficiently blowing away stubborn debris on the top of the protective cover. At the same time, it reduces the stickiness of dust, making it easier to blow away particles on the surface of the optical window. It is especially suitable for high humidity or low temperature environments, reducing the accumulation of stains caused by the mixture of condensate and dust. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a first-person perspective view of the present invention.

[0021] Figure 2 This is a perspective view of the present invention from a second perspective;

[0022] Figure 3 This is a perspective view of the connection between the mounting arm and the laser emitter of this utility model;

[0023] Figure 4 A bottom-view perspective view showing the connection between the laser emitter and the arc-shaped protective cover of this utility model;

[0024] Figure 5 This is another perspective view showing the connection between the arc-shaped protective cover and the arc-shaped connecting plate of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Bracket; 2. Laser emitter; 3. Laser receiver; 4. Mounting arm; 5. Arc-shaped protective cover; 6. Hollow air blowing plate; 7. First air blowing hole; 8. Connecting pipe; 9. Arc-shaped connecting plate; 10. Air box; 11. Dustproof fan; 12. Air guide pipe; 13. Strip-shaped vent; 14. Mounting foot; 15. Mounting bolt; 16. Second air blowing hole; 17. Heater. Detailed Implementation

[0027] 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.

[0028] This utility model provides, for example Figure 1-5 The protective device for a laser raindrop spectrometer shown includes a bracket 1, a laser emitter 2, and a laser receiver 3. The bracket 1 has mounting arms 4 at its top. The laser emitter 2 and laser receiver 3 are respectively fixedly mounted on the upper ends of the two mounting arms 4. Each of the upper ends of the two mounting arms 4 is fixedly fitted with an arc-shaped protective cover 5 that shields the laser emitter 2 and laser receiver 3. The arc-shaped protective cover 5 is made of one-piece stainless steel and effectively shields and protects the laser emitter 2 and laser receiver 3, preventing impurities and dust from directly falling onto their surfaces, thus improving the operational stability of the laser emitter 2 and laser receiver 3. Mounting feet 14 are fixedly mounted on both sides of the arc-shaped protective cover 5, and mounting bolts 15 are provided on the mounting feet 14. The mounting feet 14 are fixedly connected to the mounting arms 4 by the mounting bolts 15. When it is necessary to disassemble the arc-shaped protective cover 5, simply loosen the mounting bolts 15 with a wrench, making maintenance more convenient.

[0029] like Figure 1-5As shown, hollow air-blowing plates 6 are fixedly installed inside both arc-shaped protective covers 5. The two hollow air-blowing plates 6 are located above the optical windows of the laser emitter 2 and the laser receiver 3, respectively. Multiple evenly distributed first air-blowing holes 7 are opened on the lower surface of each of the two hollow air-blowing plates 6. Connecting pipes 8 are fixedly installed on the upper surface of each of the two hollow air-blowing plates 6. Arc-shaped connecting plates 9 are fixedly installed on the top of each of the two arc-shaped protective covers 5. One end of each connecting pipe 8 is fixedly connected to the side wall of the two arc-shaped connecting plates 9. A bellows 10 is fixedly installed on the side wall of the support 1. The bellows 10... A dustproof fan 11 is fixedly installed on the side wall. The dustproof fan 11 can reduce the entry of external dust into the air box 10. Two air guide pipes 12 are fixedly installed on the top of the air box 10. The ends of the two air guide pipes 12 away from the air box 10 are respectively fixedly connected to the side walls of two arc-shaped connecting plates 9. A strip-shaped ventilation port 13 is opened at the upper end of the mounting arm 4 and below the hollow air blowing plate 6. The arc-shaped connecting plate 9 adopts a hollow structure, and multiple evenly distributed second air blowing holes 16 are opened on the side wall of the arc-shaped connecting plate 9. The multiple second air blowing holes 16 are set to blow air towards the top of the arc-shaped protective cover 5.

[0030] like Figure 1 As shown, a heater 17 extending into the air box 10 is inserted and installed on one side. The heater 17 adopts a tubular heating structure and is located on one side of the dustproof fan 11. It can heat the gas discharged into the air box 10 by the dustproof fan 11, thereby blowing hot air onto the top of the arc-shaped protective cover 5 and the optical window surfaces of the laser emitter 2 and the laser receiver 3.

[0031] When in use, the dustproof fan 11 starts and draws outside air into the air box 10. Then, the airflow is delivered to the arc-shaped connecting plate 9 through the air guide pipe 12. Part of the airflow blows air onto the top of the arc-shaped protective cover 5 through the second air blowing hole 16 of the arc-shaped connecting plate 9, blowing off the surface dust. Another part of the airflow enters the hollow air blowing plate 6 through the connecting pipe 8 and forms an air curtain on the optical window surface of the laser emitter 2 and the laser receiver 3 through the first air blowing hole 7, preventing dust from adhering and blowing away the deposited particles. The airflow generated by blowing carries the dust out from the strip ventilation port 13 of the mounting arm 4.

[0032] If the ambient temperature is low, the air inside the airbox 10 can be heated by starting the heater 17, so that the gas blown into the air duct 12 is heated, thereby blowing hot air onto the top of the arc-shaped protective cover 5 and the optical window surfaces of the laser emitter 2 and the laser receiver 3. The hot air can increase the airflow energy and more effectively blow away dust and other debris. At the same time, the warm airflow can reduce the stickiness of the dust, making it easier to be blown away, preventing particles from adhering to the optical window surface. In addition, the hot air can increase the surface temperature of the optical window, reduce the generation of condensation water caused by temperature difference, prevent water mist from mixing with dust to form stains, and maintain stable light transmittance.

[0033] In addition, the arc-shaped protective cover 5 is fixed to the mounting arm 4 by the mounting feet 14 and mounting bolts 15, providing physical protection for the equipment. The whole system maintains the transparency of the optical window through the synergistic effect of airflow purging and structural protection, ensuring the stable operation of the laser raindrop spectrometer.

[0034] 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. A protection device for a laser raindrop spectrometer comprising a support (1), a laser emitter (2) and a laser receiver (3), characterized in that: The bracket (1) is provided with a mounting arm (4) at the top. The laser emitter (2) and the laser receiver (3) are respectively fixedly mounted on the upper ends of the two mounting arms (4). The upper ends of the two mounting arms (4) are each fixedly mounted with an arc-shaped protective cover (5) that shields the laser emitter (2) and the laser receiver (3). Hollow air-blowing plates (6) are fixedly installed inside both of the two arc-shaped protective covers (5). The two hollow air-blowing plates (6) are respectively located above the optical window of the laser emitter (2) and the optical window of the laser receiver (3). Multiple evenly distributed first air-blowing holes (7) are opened on the lower surface of both hollow air-blowing plates (6). Connecting pipes (8) are fixedly installed on the upper surface of both hollow air-blowing plates (6). Arc-shaped connecting plates (9) are fixedly installed on the top of both arc-shaped protective covers (5). One end of the two connecting pipes (8) is fixedly connected to the side wall of the two arc-shaped connecting plates (9). The side wall of the bracket (1) is fixedly provided with a bellows (10), the side wall of the bellows (10) is fixedly provided with a dustproof fan (11), the top of the bellows (10) is fixedly provided with two air guide pipes (12), and the ends of the two air guide pipes (12) away from the bellows (10) are respectively fixedly connected to the side walls of the two arc-shaped connecting plates (9).

2. The protective device for a laser raindrop spectrometer according to claim 1, characterized in that: A strip-shaped ventilation opening (13) is provided at the upper end of the mounting arm (4) and below the hollow air blowing plate (6).

3. The protective device for a laser raindrop spectrometer of claim 1, wherein: The arc-shaped protective cover (5) is fixedly provided with mounting feet (14) on both sides, and mounting bolts (15) are provided on the mounting feet (14). The mounting feet (14) and the mounting arm (4) are fixedly connected by the mounting bolts (15).

4. The protective device for a laser raindrop spectrometer of claim 1, wherein: The arc-shaped connecting plate (9) adopts a hollow structure, and the side wall of the arc-shaped connecting plate (9) is provided with a plurality of evenly distributed second air blowing holes (16), and the plurality of second air blowing holes (16) are set to blow air towards the top of the arc-shaped protective cover (5).

5. The protective device for a laser raindrop spectrometer of claim 1, wherein: A heater (17) is inserted into one side of the air box (10).

6. The protective device for a laser raindrop spectrometer of claim 1, wherein: The arc-shaped protective cover (5) is made of stainless steel in one piece.

Images