A site controller for air monitors

Abstract

The utility model provides a cloth spot controller for air monitor relates to air monitor technical field, the utility model discloses the sliding ring of sliding connection in the outer wall surface of air inlet pipe, the annular lateral wall fixed mounting of sliding ring has L type plugboard, the side surface fixed mounting of monitor body has two plug -in frames, the one end of L type plugboard is located in the inside of plug -in frame away from sliding ring, the top surface of two plug -in frames all fixed mounting has the vertical rod, the outer wall surface sliding connection of vertical rod has the moving plate, the bottom surface fixed mounting of moving plate has the plug -in rod, the surface of L type plugboard horizontal end is provided with the jack of matching with plug -in rod, the utility model discloses through the limiting device, make and utilize through the structure cooperation of sliding ring + L type plugboard + spring drive plug -in rod, effectively solved the core problem that present device guard net fixed difficultly, inconvenient cleaning, guarantee the stability and air tightness of air inlet pipe installation simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of air monitor technology, and in particular to a point-of-use controller for air monitors. Background Technology

[0002] Air environment monitoring refers to the sampling and measurement of pollutants present in the air at fixed points, continuously or at fixed times. In order to monitor the air, air monitoring requires the use of point controllers to realize the fixed-point collection of pollutants and data feedback.

[0003] An existing air environment monitor with publication number CN217332343U uses a control button and display screen to debug and read internal data of the device. At the same time, the operator can rotate the turntable to drive the first bevel gear to rotate through the second bevel gear. At this time, the lead screw can be rotated. When the lead screw rotates, it can drive the threaded rod to rise and fall. At this time, the practical height of the device can be adjusted by extending and retracting the threaded rod inside the shrink plate, which improves the convenience of the device.

[0004] The inventors discovered in their daily work that the protective net inside the air intake pipe of the aforementioned air environment monitor is fixedly installed, which means that the protective net cannot be cleaned for a long time. In outdoor scenes with a lot of dust, the protective net will soon be blocked by dust, resulting in a significant decrease in air intake efficiency. The originally smooth air intake channel becomes narrow due to blockage, and the airflow into the monitor is insufficient, which directly causes significant deviations in the monitoring data and makes it impossible to accurately reflect the actual concentration of air pollutants. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned above in the background art by proposing a point-of-use controller for air monitors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a point-of-use controller for an air monitor, comprising a mounting base, two mounting plates fixedly mounted on both sides of the mounting base, each mounting plate having a mounting hole on its surface, an L-shaped bracket fixedly mounted on the surface of the mounting base, a rotating column rotatably connected to the top horizontal end of the L-shaped bracket, a monitor body fixedly mounted at the bottom of the rotating column, two mounting sleeves fixedly mounted on one side of the monitor body, the two mounting sleeves communicating with the interior of the monitor body, an air inlet pipe movably mounted inside each of the two mounting sleeves, a protective net fixedly mounted inside each of the two air inlet pipes, a limiting device provided on the outer wall surface of the air inlet pipe, the limiting device comprising a slip ring slidably connected to the outer wall surface of the air inlet pipe, an L-shaped insert plate fixedly mounted on the annular side wall of the slip ring, two insert frames fixedly mounted on one side of the monitor body, the end of the L-shaped insert plate away from the slip ring located inside the insert frame.

[0007] Preferably, each of the two insert frames has a vertical pole fixedly installed on its top surface, and a movable plate is slidably connected to the outer wall surface of the vertical pole.

[0008] Preferably, a plug rod is fixedly installed on the bottom surface of the movable plate, and the horizontal end of the L-shaped plug plate has a plug hole that matches the plug rod.

[0009] Preferably, a limiting plate is fixedly installed on the surface of the end of the upright away from the insertion frame, and a spring is fixedly installed between the limiting plate and the moving plate.

[0010] Preferably, the surface of the monitor body is provided with multiple indicator lights, multiple operation buttons and a flashing alarm light, and the surface of the monitor body is provided with a display screen.

[0011] Preferably, a ventilation window is fixedly installed on the side of the monitor body away from the mounting sleeve, and a ventilation fan is provided inside the ventilation window.

[0012] The effect achieved by the above components is that by using the structure of "slip ring + L-shaped insert plate + spring-driven insert rod", the core problems of the existing device's protective net being difficult to fix and remove and inconvenient to clean are effectively solved, while ensuring the stability of the air intake pipe installation and the air intake sealing.

[0013] Preferably, the surface of the top horizontal end of the L-shaped bracket is provided with a rotating device. The rotating device includes a motor fixedly installed on the surface of the top horizontal end of the L-shaped bracket. The output end of the motor is fixedly installed with a first gear through a coupling. The outer wall surface of the rotating column is fixedly installed with a second gear. The first gear and the second gear mesh with each other.

[0014] Preferably, a battery box is fixedly installed on the surface of the top horizontal end of the L-shaped bracket, the battery box contains a battery pack, a PLC controller is fixedly installed on the top surface of the battery box, the PLC controller and the motor are both electrically connected to the battery pack inside the battery box, and the PLC controller and the motor are electrically connected.

[0015] The effect achieved by the above components is that, through the combination of "motor + gear transmission + PLC control", the problem of traditional devices being able to only monitor fixed positions and the high cost of multi-position monitoring is completely solved, while improving the convenience and accuracy of direction adjustment.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this utility model, by setting a limiting device, the structure of "slip ring + L-shaped insert plate + spring-driven insert rod" is used to effectively solve the core problems of the existing device's protective net being difficult to fix and remove, and inconvenient to clean, while ensuring the stability of the air intake pipe installation and the air intake sealing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Another structural diagram from a different angle; Figure 3 This utility model Figure 2 A schematic diagram of the separation structure; Figure 4 This utility model Figure 3 Another structural diagram from a different angle; Figure 5 This utility model Figure 4 A schematic diagram of the three-dimensional structure at point A in the middle.

[0018] Legend: 1. Mounting base; 2. Limiting device; 21. Slip ring; 22. L-shaped insert plate; 23. Insert frame; 24. Upright pole; 25. Moving plate; 26. Insert rod; 27. Insert hole; 28. Limiting plate; 29. ​​Spring; 3. Rotating device; 31. Motor; 32. First gear; 33. Second gear; 34. Battery box; 35. PLC controller; 4. L-shaped bracket; 5. Rotating column; 6. Monitor body; 7. Display screen; 8. Mounting plate; 9. Indicator light; 10. Operation button; 11. Flashing alarm light; 12. Mounting sleeve; 13. Air inlet pipe; 14. Protective net; 15. Ventilation window; 16. Dissipating fan. Detailed Implementation

[0019] Example 1, such as Figure 1-5As shown, an air monitoring device distribution controller includes a mounting base 1. Two mounting plates 8 are fixedly mounted on both sides of the mounting base 1. Each mounting plate 8 has mounting holes on its surface. An L-shaped bracket 4 is fixedly mounted on the surface of the mounting base 1. A rotating column 5 is rotatably connected to the top horizontal end of the L-shaped bracket 4. A monitor body 6 is fixedly mounted on the bottom of the rotating column 5. Two mounting sleeves 12 are fixedly mounted on one side of the monitor body 6. The two mounting sleeves 12 are connected to the interior of the monitor body 6. An air inlet pipe 13 is movably mounted inside each of the two mounting sleeves 12. A protective net 14 is fixedly mounted inside each of the two air inlet pipes 13. The surface of the monitor body 6 is provided with multiple indicator lights 9, multiple operation buttons 10, and a flashing alarm light 11. A display screen 7 is provided on the surface of the monitor body 6. The side of the monitor body 6 away from the mounting sleeves 12 is fixedly mounted... The device is equipped with a ventilation window 15, inside which is a ventilation fan 16. The mounting base 1 is made of Q235 steel, with a load-bearing capacity of ≥8kg and a hot-dip galvanized surface for rust prevention. The L-shaped bracket 4 is made of aluminum alloy, with a weather resistance of ≥5 years. The rotating column 5 is chrome-plated to reduce drag. The monitor body 6 is made of ABS+PC alloy, with a waterproof rating of IP54. The inner wall of the mounting sleeve 12 is embedded with a silicone sealing strip, with a sealing gap of ≤0.1mm. The protective mesh 14 is made of 304 stainless steel, with a pore size of 8μm, a filtration efficiency of ≥95%, and a corrosion resistance of ≥3 years. There are four indicator lights 9: green for normal operation, yellow for low battery, red for fault, and blue for direction adjustment. There are six operation buttons 10: power, direction adjustment, calibration, data export, alarm reset, and manual sampling. The flashing alarm light 11 is red and flashes at a frequency of 1Hz, with a sound pressure level of ≥85dB and PM2.5 of ≥75μg / m³. 3 Or SO2 ≥ 50 μg / m 3 The system is time-triggered; the display screen 7 is a 5-inch TFT LCD with a resolution of 800×480, supporting real-time display of pollutant concentration and adjustment angle; the ventilation window 15 has a built-in dustproof mesh with a pore size of 5μm; and the ventilation fan 16 is a DC fan, 12V / 0.2A, with an airflow ≥12m³ / h. 3 / h, ensure the internal temperature of the monitor is ≤45℃.

[0020] Reference Figure 1-3As shown in this embodiment: a limiting device 2 is provided on the outer wall surface of the intake pipe 13. The limiting device 2 includes a slip ring 21 slidably connected to the outer wall surface of the intake pipe 13. An L-shaped insert plate 22 is fixedly installed on the annular side wall of the slip ring 21. Two insert frames 23 are fixedly installed on one side surface of the monitor body 6. The end of the L-shaped insert plate 22 away from the slip ring 21 is located inside the insert frame 23. A vertical rod 24 is fixedly installed on the top surface of both insert frames 23. A movable plate 25 is slidably connected to the outer wall surface of the vertical rod 24. An insert rod 26 is fixedly installed on the bottom surface of the movable plate 25. An insertion hole 27 matching the insert rod 26 is opened on the horizontal end surface of the L-shaped insert plate 22. The vertical rod 24 is away from the insert frame 23. A limiting plate 28 is fixedly installed on one end surface. A spring 29 is fixedly installed between the limiting plate 28 and the moving plate 25. The clearance between the slip ring 21 and the air inlet pipe 13 is ≤0.3mm, and the sliding resistance is ≤5N. The clearance between the moving plate 25 and the upright 24 is ≤0.2mm. The insertion rod 26 is made of 304 stainless steel, with a diameter of 5mm and a length of 12mm and an insertion depth of ≥8mm. The insertion hole 27 has a diameter of 5.2mm and a depth of 10mm. After the insertion rod 26 is inserted into the insertion hole 27, the clearance is ≤0.2mm to prevent vibration and detachment. The spring 29 is a cylindrical helical spring made of 65Mn, with a diameter of 1.5mm, a free length of 35mm, an elastic coefficient of 8N / mm, and a compression stroke of ≤15mm.

[0021] Reference Figure 4-5 As shown in this embodiment: a rotating device 3 is provided on the surface of the top horizontal end of the L-shaped bracket 4. The rotating device 3 includes a motor 31 fixedly installed on the surface of the top horizontal end of the L-shaped bracket 4. A first gear 32 is fixedly installed on the output end of the motor 31 through a coupling. A second gear 33 is fixedly installed on the outer wall surface of the rotating column 5. The first gear 32 and the second gear 33 mesh with each other. A battery box 34 is fixedly installed on the surface of the top horizontal end of the L-shaped bracket 4. A battery pack is provided inside the battery box 34. A PLC controller 35 is fixedly installed on the top surface of the battery box 34. The PLC controller 35 and the motor 31 are both electrically connected to the battery pack inside the battery box 34. 5 is electrically connected to motor 31. Motor 31 is a stepper motor, model 28BYG, with a power of 0.2kW, a speed of 20r / min, a torque ≥5N•m, and a positioning error ≤0.5°. The first gear 32 is made of 45# steel, with a module of 1.2mm, 20 teeth, and a tooth surface hardness of HRC40-45. The second gear 33 is also made of 45# steel, with a module of 1.2mm, 200 teeth, and a tooth surface hardness of HRC40-45. The transmission ratio between the first gear 32 and the second gear 33 is 1:10. The battery box 34 is made of ABS material with a waterproof rating of IP54. The battery pack inside the battery box 34 is a 12V / 15Ah lithium battery. The PLC controller 35 is model S7-1200 Mini, with a response time ≤0.3s, and supports RS485 communication and remote direction adjustment command reception.

[0022] Working Principle: When using this device, first check the status of each component: confirm that the motor 31 runs smoothly without jamming or abnormal noise after being powered on; the spring 29 has normal elasticity and can quickly return to its original position after compression without deformation; the air intake pipe 13 and the mounting sleeve 12 fit tightly with the silicone sealing strip without damage or air leakage gaps; the PLC controller 35 communicates normally with the monitor body 6 and the motor 31 with a signal delay ≤0.3s; at the same time, clean the residual dust on the surface of the protective mesh 14 inside the air intake pipe 13 to ensure that the air intake channel is unobstructed and to avoid the data accuracy being affected by dust accumulation during initial monitoring. After the inspection is completed, the operator first fixes the mounting base 1 to the outdoor monitoring pole or wall (1.8-2.2m above the ground, avoiding obstructions such as trees and buildings) through the mounting holes on the surface of the mounting plate 8 using expansion bolts. Use a level to calibrate the L-shaped bracket 4 to ensure that the bracket is vertical and tilted with a deviation ≤0.5mm to prevent the monitor body 6 from shifting when the rotating column 5 rotates. Then open the battery box. 34. Check the internal battery pack power to ensure a battery life of ≥12 hours. For long-term outdoor use, an external solar charging module can be connected. On the touch interface of the PLC controller 35, preset the monitoring orientation such as 0°, 90°, 180°, etc., and set the orientation switching interval, such as automatic switching every 2 hours. Calibrate the display screen 7 using operation button 10 to ensure the concentration display matches the standard value. After initialization, press the "Power" operation button 10 on the surface of the monitor body 6 to start the device. Outdoor air enters through the air inlet pipe 13, first passing through the internal protective mesh 14. The protective mesh filters dust particles larger than 5μm in the air, preventing impurities from entering the monitor body 6 and interfering with the sensor. The filtered air enters the monitor body 6, where the sensor detects the pollutant concentration. Real-time data such as PM2.5 and SO2 concentrations are simultaneously displayed on the display screen 7. When the pollutant concentration exceeds the standard, such as PM2.5 ≥75μg / m³, the sensor will detect the pollutant concentration. 3 Or SO2 ≥ 50 μg / m 3When the alarm light 11 is activated, it will automatically flash red light and be accompanied by an alarm sound of ≥85dB to remind staff to pay attention. Throughout the monitoring process, the ventilation fan 16 on one side of the monitor body 6 will run continuously, working with the ventilation window 15 to achieve internal air circulation. The dustproof net built into the ventilation window can prevent external dust from entering. At the same time, the ventilation fan 16 can dissipate the heat generated by the monitor body 6 during operation, ensuring that the internal temperature is stable at ≤45℃, avoiding high temperature from affecting the performance of electronic components. When it is necessary to switch the monitoring direction, such as from the east to the south, the target direction can be clicked through the touch interface of the PLC controller 35 or a remote signal can be sent. Upon receiving the direction adjustment command, the PLC controller sends a start signal to motor 31. After motor 31 starts, its output terminal drives the first gear 32 to rotate at a constant speed via a coupling. Since the first gear 32 meshes with the second gear 33 on the outer wall of the rotating column 5 with a transmission ratio of 1:10, the rotation of the first gear 32 will drive the second gear 33 to rotate synchronously, thereby driving the rotating column 5 to rotate around the top horizontal end of the L-shaped bracket 4. When the rotating column 5 rotates, it will synchronously drive the bottom monitoring body 6 and the air inlet pipe 13 to rotate together. When the monitoring body 6 rotates to a preset position, such as 90°, the PLC controller 35 will send a stop signal, and motor 31 will stop. At this time, the display... Screen 7 will simultaneously display the current monitoring location. If multiple locations need to be monitored cyclically, the switching interval can be preset in the PLC controller 35. The device will automatically complete the location switching according to the set time without manual intervention. After the device has been running continuously for a period of time, such as 7-10 days (adjusted according to the outdoor dust concentration), if the display screen 7 prompts "decreased air intake efficiency" or the monitoring data shows significant fluctuations, the protective net 14 needs to be cleaned. First, press the "pause" button on the monitor body 6 to stop the current monitoring operation. Then, slide the moving plate 25 upwards by hand. The moving plate 25 will slide upwards along the upright 24 and squeeze the spring 29, causing the spring 39 to be compressed. The compression stroke is ≤15mm; as the moving plate 25 slides, it will drive the bottom insertion rod 26 to move upward synchronously until the insertion rod 26 is completely dislodged from the insertion hole 27 of the L-shaped insertion plate 22, releasing the limit on the L-shaped insertion plate 22. Then, hold the slip ring 21 and slide it along the outer wall of the air inlet pipe 13 away from the monitor body 6. The slip ring 21 will drive the L-shaped insertion plate 22 on the annular side wall to move, causing the L-shaped insertion plate 22 to dislodge from the insertion frame 23. At this time, the limit between the air inlet pipe 13 and the mounting sleeve 12 is removed, and the air inlet pipe 13 can be directly pulled out from the mounting sleeve 12. For the pulled-out air inlet pipe 13, use compressed air, with a recommended pressure of 0.Blow away dust from the surface of the protective net 14 at 6MPa from the inside to the outside, or gently clean it with a soft brush to avoid damaging the protective net 14; after cleaning, operate in reverse order: first insert the air inlet pipe 13 into the installation sleeve 12 to the bottom to ensure the silicone sealing strip is in place, slide the slip ring 21 to insert the L-shaped insert plate 22 into the insert frame 23, then release the moving plate 25, the spring 29 returns to its natural state, push the moving plate 25 down, and drive the insert rod 26 to re-insert into the insert hole 27 to complete the fixing of the air inlet pipe 13, and finally press the "start" button to resume monitoring. At this time, the air intake efficiency can be restored to ≥95%, ensuring Subsequent monitoring data is accurate. If continued monitoring is no longer needed, first press the "Power" button to turn off the device and disconnect the battery pack. For long-term inactivity, remove the battery to avoid depletion. Then clean the dust from the surface of the monitor body 6 and check if the dust filter of the ventilation window 15 is clogged. If clogged, remove and clean or replace it. During weekly maintenance, apply a small amount of lithium-based grease to the meshing point of the first gear 32 and the second gear 33 to reduce gear wear. Monthly, recalibrate the rotational accuracy of the motor 31 using the PLC controller 35. If the azimuth angle deviation exceeds 0.5°, the parameters need to be reset to ensure accurate azimuth switching.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A point-of-use controller for an air monitor, comprising a mounting base (1), wherein two mounting plates (8) are fixedly mounted on both sides of the mounting base (1), each mounting plate (8) having a mounting hole on its surface, an L-shaped bracket (4) is fixedly mounted on the surface of the mounting base (1), a rotating column (5) is rotatably connected to the top horizontal end of the L-shaped bracket (4), a monitor body (6) is fixedly mounted on the bottom of the rotating column (5), two mounting sleeves (12) are fixedly mounted on one side of the monitor body (6), the two mounting sleeves (12) are internally connected to the monitor body (6), an air inlet pipe (13) is movably mounted inside each of the two mounting sleeves (12), and a protective net (14) is fixedly mounted inside each of the two air inlet pipes (13), characterized in that: The outer wall surface of the air intake pipe (13) is provided with a limiting device (2). The limiting device (2) includes a slip ring (21) that is slidably connected to the outer wall surface of the air intake pipe (13). An L-shaped insert plate (22) is fixedly installed on the annular side wall of the slip ring (21). Two insert frames (23) are fixedly installed on one side surface of the monitor body (6). The end of the L-shaped insert plate (22) away from the slip ring (21) is located inside the insert frame (23).

2. The point-of-use controller for an air monitor according to claim 1, characterized in that: The top surfaces of the two insert frames (23) are fixedly mounted with uprights (24), and the outer wall surfaces of the uprights (24) are slidably connected with movable plates (25).

3. A point-of-use controller for an air monitor according to claim 2, characterized in that: The bottom surface of the movable plate (25) is fixedly installed with a plug rod (26), and the surface of the horizontal end of the L-shaped plug plate (22) is provided with a plug hole (27) that matches the plug rod (26).

4. A point-of-use controller for an air monitor according to claim 2, characterized in that: A limiting plate (28) is fixedly installed on the surface of the end of the pole (24) away from the insertion frame (23), and a spring (29) is fixedly installed between the limiting plate (28) and the moving plate (25).

5. A point-of-use controller for an air monitor according to claim 1, characterized in that: The surface of the monitor body (6) is provided with multiple indicator lights (9), multiple operation buttons (10) and flashing alarm lights (11), and the surface of the monitor body (6) is provided with a display screen (7).

6. A point-of-use controller for an air monitor according to claim 1, characterized in that: A ventilation window (15) is fixedly installed on the side surface of the monitor body (6) away from the mounting sleeve (12), and a ventilation fan (16) is provided inside the ventilation window (15).

7. A point-of-use controller for an air monitor according to claim 1, characterized in that: The L-shaped bracket (4) has a rotating device (3) on the surface of the top horizontal end. The rotating device (3) includes a motor (31) fixedly installed on the surface of the top horizontal end of the L-shaped bracket (4). The output end of the motor (31) is fixedly installed with a first gear (32) through a coupling. The outer wall surface of the rotating column (5) is fixedly installed with a second gear (33). The first gear (32) and the second gear (33) mesh with each other.

8. A point-of-use controller for an air monitor according to claim 1, characterized in that: A battery box (34) is fixedly installed on the surface of the top horizontal end of the L-shaped bracket (4). The battery box (34) contains a battery pack. A PLC controller (35) is fixedly installed on the top surface of the battery box (34). The PLC controller (35) and the motor (31) are both electrically connected to the battery pack inside the battery box (34). The PLC controller (35) and the motor (31) are electrically connected.

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