Laser dust detection system

Abstract

A laser dust detection system comprises a base and a main rod vertically arranged on the base, a detector is vertically arranged on the main rod in a sliding mode, a driving device capable of driving the detector to vertically slide is arranged in the main rod, and the detector is driven by the driving device to vertically slide. Collection of atmosphere at different height positions and detection of dust concentration information can be completed; the detector comprises a sleeve slidably sleeving the main rod, an annular top plate and an annular bottom plate are arranged on outer rings of the upper end and the lower end of the sleeve respectively, an outer cylinder coaxial with the sleeve is further arranged on the upper side of the bottom plate, an annular guide plate is arranged on an inner ring of the upper end of the outer cylinder, and gaps are formed between the guide plate and the top plate and between the inner ring of the guide plate and the outer ring of the sleeve. The outer diameter of the top plate is larger than the inner diameter of the guide plate, an air suction pump is arranged on the outer cylinder, a laser dust detector is further arranged on the inner wall, atmosphere can be collected into the outer cylinder under the action of the air suction pump, and dust concentration detection work is completed through the laser dust detector.

Description

Technical Field

[0001] This utility model relates to the field of air dust concentration detection technology, specifically a laser dust detection system. Background Technology

[0002] In open-pit coal mining operations, dust generated during surface stripping, blasting, and transportation seriously endangers the personal safety of miners, restricts efficient mining, and causes serious pollution to the surrounding water, soil, vegetation, and air. Currently, dust monitoring in open-pit coal mines is usually achieved by relying on dust detectors.

[0003] For example, patent application CN202320407592.3 in the patent database discloses a laser dust detection device. This device detects dust concentration in the air at different heights within the same area by sliding the laser dust detector body (main connecting rod and several auxiliary extension rods) on the detector body. However, because the detector body slides along the outer wall of the main connecting rod under gravity and driven by the sliding seat, this method is inconvenient due to the long construction cycle in coal mines. When multiple tests are needed in the same area (i.e., multiple tests within a fixed time interval), the detector body needs to be manually pushed back to the top of the vertical rod. Furthermore, when collecting atmospheric data at different heights and detecting dust concentration, it also absorbs a large amount of air from the upper and lower layers of the atmosphere, leading to significant deviations in the test results. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a laser dust detection system.

[0005] The technical solution of this utility model is as follows:

[0006] A laser dust detection system includes a base and a vertically mounted main rod. A detector is slidably mounted vertically on the main rod. The main rod contains a drive device that can drive the detector to slide vertically. By driving the detector to slide up and down through the drive device, the system can collect atmospheric data and detect dust concentration information at different heights. The height of the detector can be adjusted simply by controlling the action of the drive device, without manual intervention. Even if multiple cycles of detection are required at the same position, it can be easily achieved.

[0007] Specifically, the detector includes a sleeve that is slidably fitted onto the main rod. The outer rings of the upper and lower ends of the sleeve are respectively provided with an annular top plate and a bottom plate. An outer cylinder, coaxially arranged with the sleeve, is also provided on the upper side of the bottom plate. An annular guide plate is provided on the inner ring of the upper end of the outer cylinder. Gaps exist between the guide plate and the top plate, and between the inner ring of the guide plate and the outer ring of the sleeve. The outer diameter of the top plate is larger than the inner diameter of the guide plate. An air pump is installed on the outer cylinder, and a laser dust detector is installed on its inner wall. Under the action of the air pump, air can be collected into the outer cylinder. Combined with the top plate and guide plate, and by controlling the intermittent operation of the air pump, the air collected by the detector is mostly gas at the same altitude, significantly reducing the detection deviation of dust concentration at that altitude.

[0008] In the laser dust detection system described above, to ensure the intake of air at the same height as the detector under the action of the air pump, the outer diameter of the outer cylinder is the same as the outer diameter of the top plate, and the difference between the inner and outer diameters of the guide plate is at least 5 cm.

[0009] As a preferred embodiment, in order to ensure that the atmosphere is smoothly drawn into the outer cylinder while maintaining the airtightness of the outer cylinder and increasing the detection accuracy of the laser dust detector, the difference between the inner diameter of the guide plate and the outer diameter of the sleeve is 3-7 cm.

[0010] As a further preferred embodiment, to further ensure the parallel atmospheric intake effect of the detector, the gap between the guide plate and the top plate is 1.5-3.5cm.

[0011] As described above, in a laser dust detection system, the driving device includes a wound motor fixed to a base. A roller is located inside the upper end of the main rod, and a wire outlet hole is provided corresponding to the roller position. A pull rope is wound around the wound motor, passing over the roller and through the wire outlet hole to be fixed to the top plate. The detector can slide down under its own weight and rise under the action of the driving device. Based on the above structure, the entire driving device is located inside the rod, with only the outer end of the pull rope passing through the wire outlet hole, ensuring that the driving device is not damaged or contaminated, effectively improving its service life.

[0012] To ensure that the detector can slide smoothly under its own weight, a counterweight is also provided on the underside of the base plate.

[0013] To prevent jamming during the detector's descent and ensure smooth sliding, the counterweight is a columnar structure sleeved on the main rod and coaxial with it.

[0014] To facilitate the fixation of the counterweight and the detector, the counterweight and the base plate are fixed by adsorption.

[0015] As described above, the laser dust detection system includes a laser emitter and a diffuser receiver arranged opposite to each other. Multiple sets of laser emitters are arranged circumferentially around the inner wall of the outer cylinder, allowing the detection results of multiple sets of laser dust detectors to be compared and verified with each other, further ensuring the accuracy of atmospheric dust concentration detection results.

[0016] As described above, in order to adjust the height of the main rod as needed, the main rod includes multiple support rods connected end to end, and the driving device remains unaffected by the height of the main rod after the main rod height is adjusted, which significantly improves the practicality of the detection system (the aforementioned laser dust detection system).

[0017] The beneficial effects of this utility model are as follows: This utility model is a laser dust detection system. By driving the detector to slide up and down through a drive device, it can complete the collection of air and detection of dust concentration information at different heights. The height position of the detector can be adjusted simply by controlling the action of the drive device, without manual intervention. Even if multiple cycles of detection are required at the same position, it can be easily achieved. The combination of the top plate and guide plate, along with the control of the air pump operation, ensures that the air collected by the detector is mostly gas at the same height, significantly reducing the detection deviation of dust concentration at that height. Attached Figure Description

[0018] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the detection system in the embodiment;

[0021] Figure 2 for Figure 1 The main view;

[0022] Figure 3 This is a schematic diagram of the mating structure of the top cap, main rod, and base in the embodiment;

[0023] Figure 4 for Figure 3 Internal structure diagram;

[0024] Figure 5 This is a schematic diagram of the detector structure in the embodiment;

[0025] Figure 6 for Figure 5 Internal structure diagram;

[0026] Figure 7 This is a schematic diagram of the cooperative structure of the base, main rod, detector and driving device in the embodiment;

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Base; 2. Main rod; 21. Support rod; 211. Roller; 212. Cable outlet; 3. Detector; 31. Sleeve; 32. Top plate; 33. Bottom plate; 34. Outer cylinder; 35. Guide plate; 36. Reinforcing column; 37. Laser dust detector; 4. Drive device; 41. Winding motor; 42. Pull rope; 5. Top cap. Detailed Implementation

[0029] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0030] Example

[0031] This embodiment provides a laser dust detection system; see [link / reference] Figure 1 , Figure 2 and Figure 7 The system includes a base 1 and a vertically mounted main rod 2. A detector 3 is vertically slidably mounted on the main rod 2. The main rod 2 is a hollow tubular structure, and its interior is equipped with a driving device 4 that can drive the detector 3 to slide vertically. By driving the detector 3 to slide up and down through the driving device 4, the system can collect atmospheric data and detect dust concentration information at different heights. The height of the detector 3 can be adjusted simply by controlling the action of the driving device 4, without the need for manual intervention. Even if multiple cycles of detection are required at the same position, it can be easily achieved.

[0032] In this embodiment, combined with Figure 5 and Figure 6 Specifically, the detector 3 includes a sleeve 31 that is slidably fitted outside the main rod 2. The outer rings of the upper and lower ends of the sleeve 31 are respectively provided with an annular top plate 32 and a bottom plate 33. An outer cylinder 34 coaxially arranged with the sleeve 31 is also provided on the upper side of the bottom plate 33. An annular guide plate 35 is provided on the inner ring of the upper end of the outer cylinder 34. There are gaps between the guide plate 35 and the top plate 32, and between the inner ring of the guide plate 35 and the outer ring of the sleeve 31. The outer diameter of the top plate 32 is larger than the inner diameter of the guide plate 35. An air pump is provided on the outer cylinder 34, and a laser dust detector 37 is provided on the inner wall. Under the action of the air pump, the atmosphere can be collected into the interior of the outer cylinder 34. With the arrangement of the top plate 32 and the guide plate 35, and by controlling the intermittent operation of the air pump, the atmosphere collected by the detector 3 is mostly gas at the same height, which significantly reduces the detection deviation of dust concentration at that height.

[0033] Furthermore, the laser dust detector 37 includes a laser emitter and a diffuser receiver arranged opposite to each other, and multiple sets of these are arranged in a circumferential array around the inner wall of the outer cylinder 34, preferably four sets. This allows the detection results of multiple sets of laser dust detectors 37 to be compared and verified with each other, further ensuring the accuracy of the atmospheric dust concentration detection results.

[0034] In a preferred embodiment, to ensure the intake of air at the same height as the detector 3 under the action of the air pump, the outer diameter of the outer cylinder 34 is the same as the outer diameter of the top plate 32, and the difference between the inner and outer diameters of the guide plate 35 is at least 5 cm, preferably 7 cm.

[0035] As a further preferred embodiment, in order to ensure that the atmosphere is smoothly drawn into the outer cylinder 34 while maintaining the airtightness of the outer cylinder 34 and increasing the detection accuracy of the laser dust detector 37, the difference between the inner diameter of the guide plate 35 and the outer diameter of the sleeve 31 is 3-7cm, preferably 4cm.

[0036] More preferably, to further ensure the atmospheric parallel intake effect of detector 3, the gap between guide plate 35 and top plate 32 is 1.5-3.5cm, preferably 2cm.

[0037] In this embodiment, combined with Figure 7 Specifically, the structure of the drive device 4 includes a winding motor 41 fixed to the base 1. The upper end of the main rod 2 is provided with a roller 211, and a wire outlet hole 212 is provided on one side corresponding to the position of the roller 211. A pull rope 42 is wound on the winding motor 41. The pull rope 42 passes around the roller 211 and through the wire outlet hole 212 and is fixed to the top plate 32. The detector 3 can slide down under its own weight and rise under the action of the drive device 4. Based on the above structure, the entire drive device 4 is located inside the rod, and only the outer end of the pull rope 42 passes through the wire outlet hole 212, ensuring that the drive device 4 is not damaged or contaminated, and effectively improving its working life.

[0038] To ensure that the detector 3 can slide smoothly under its own weight, a counterweight is also provided on the underside of the base plate 33.

[0039] To prevent the detector 3 from getting stuck during its descent and to ensure its smooth sliding, the counterweight is a columnar structure that is sleeved on the main rod 2 and coaxial with the main rod 2.

[0040] To facilitate the fixation between the counterweight and the detector 3, the counterweight and the base plate 33 are fixed by adsorption.

[0041] In this embodiment, combined with Figure 3 and Figure 4In order to adjust the height of the main rod 2 as needed, the main rod 2 includes multiple support rods 21 connected end to end. The multiple support rods 21 are vertically arranged above the base 1. The base 1 is also provided with fixing holes and can be fixed to the area to be tested by fixing pins.

[0042] Specifically, each of the support rods 21 is provided with a roller 211 at its upper end, and a wire outlet hole 212 is provided on one side corresponding to the position of the roller 211. Based on this structure, after the height of the main rod 2 is adjusted (i.e., when the number of straight rods changes), the drive device 4 is still not affected by the height of the main rod 2. That is, the pull rope 42 can still go around the roller 211 of the uppermost support rod 21 and pass out from the wire outlet hole 212, which significantly improves the practicality of the detection system.

[0043] As a preferred embodiment, in order to prevent the drive device 4 inside the main rod 2 from being contaminated, a top cap 5 is also fastened to the upper end of the uppermost part of the main rod.

Claims

1. A laser dust detection system, characterized in that, It includes a base (1) and a vertically arranged main rod (2) on it. A detector (3) is vertically slidably arranged on the main rod (2). A driving device (4) capable of driving the detector (3) to slide vertically is provided inside the main rod (2). The detector (3) includes a sleeve (31) that is slidably sleeved outside the main rod (2). The outer rings of the upper and lower ends of the sleeve (31) are respectively provided with an annular top plate (32) and a bottom plate (33). The upper side of the bottom plate (33) is also provided with an outer cylinder (34) that is coaxially arranged with the sleeve (31). The inner ring of the upper end of the outer cylinder (34) is provided with an annular guide plate (35). There are gaps between the guide plate (35) and the top plate (32), and between the inner ring of the guide plate (35) and the outer ring of the sleeve (31). The outer diameter of the top plate (32) is larger than the inner diameter of the guide plate (35). A laser dust detector (37) is also provided on the inner wall of the outer cylinder (34).

2. The laser dust detection system according to claim 1, characterized in that, The outer diameter of the outer cylinder (34) is the same as the outer diameter of the top plate (32), and the difference between the inner and outer diameters of the guide plate (35) is at least 5 cm.

3. The laser dust detection system according to claim 2, characterized in that, The difference between the inner diameter of the guide plate (35) and the outer diameter of the sleeve (31) is 3-7 cm.

4. The laser dust detection system according to claim 3, characterized in that, The gap between the guide plate (35) and the top plate (32) is 1.5-3.5cm.

5. A laser dust detection system according to any one of claims 1-3, characterized in that, The drive device (4) includes a winding motor (41) fixed to the base (1), and the upper end of the main rod (2) is provided with a roller (211), and a wire outlet hole (212) is provided at the position of the roller (211). A pull rope (42) is wound around the winding motor (41). The pull rope (42) passes around the roller (211) and through the outlet hole (212) and is fixed to the top plate (32).

6. The laser dust detection system according to claim 5, characterized in that, A counterweight is also provided on the underside of the base plate (33).

7. A laser dust detection system according to claim 6, characterized in that, The counterweight is a columnar structure that is sleeved on the main rod (2) and coaxial with the main rod (2).

8. The laser dust detection system according to claim 7, characterized in that, The counterweight is adsorbed and fixed to the base plate (33).

9. A laser dust detection system according to any one of claims 1-3, characterized in that, The laser dust detector (37) includes a laser emitter and a diffuser receiver arranged opposite to each other, and multiple sets of them are arranged around the inner wall of the outer cylinder (34).

10. A laser dust detection system according to any one of claims 1-3, characterized in that, The main rod (2) includes multiple support rods (21) connected end to end.

Images