Self-calibration device of environmental protection monitoring equipment

Abstract

The utility model discloses a self-calibration device for environmental protection monitoring equipment, which belongs to the field of environmental protection monitoring equipment and comprises a bottom plate, a cleaning gas tank is fixedly mounted at the top of the bottom plate, a filtering part is arranged on the bottom plate and comprises a filtering box fixed at the top of the bottom plate, an air outlet pipe is communicated with the filtering box, and an air inlet pipe is arranged on the air outlet pipe. The air outlet pipe is connected with a pipeline of monitoring equipment, an activated carbon filter screen is fixed in the filter box, a mounting shell is fixed on the outer surface of the filter box, a scraping mechanism is arranged in the filter box, and the scraping mechanism comprises a rectangular shell arranged in the filter box. Through the arrangement of the scraping mechanism, the rectangular shell drives the brush to scrape and clean the activated carbon filter screen, so that particulate impurities attached to the activated carbon filter screen can be effectively removed, the activated carbon filter screen is prevented from being blocked by the particulate impurities, the normal ventilation performance of the filter is maintained, and the smoothness of a sampling pipeline of monitoring equipment is guaranteed; and the accuracy and the stability of monitoring data are improved.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring equipment technology, and in particular to a self-calibration device for environmental monitoring equipment. Background Technology

[0002] Environmental monitoring equipment plays a crucial role in environmental monitoring work. The accuracy of its monitoring data is directly related to the scientific nature of environmental assessment and pollution prevention and control decisions. Among various types of environmental monitoring equipment, clogging of the sampling system is a common problem that affects the accuracy of monitoring data and the stability of the equipment. During long-term use, components such as sampling pipelines and filters are easily clogged by airborne particles, which prevents samples from entering the monitoring instrument normally, causing deviations in monitoring data or even monitoring interruptions.

[0003] Current self-calibration devices primarily focus on calibrating the accuracy of monitoring data, neglecting the critical issue of sampling system blockage. Traditional self-calibration processes only adjust the measurement parameters of the monitor, failing to effectively remove particulate impurities from filters and sampling pipelines. Once the sampling system is blocked, even if the calibration device can temporarily calibrate the monitoring data, it cannot guarantee accurate sample collection during actual operation, making the monitoring data unable to accurately reflect the environmental conditions. Furthermore, when the sampling system is blocked, maintenance personnel need to spend a significant amount of time and effort disassembling, cleaning, and maintaining the equipment, increasing maintenance costs and downtime, and severely impacting the efficiency and continuity of environmental monitoring work. Utility Model Content

[0004] The purpose of this invention is to address the problem in existing technologies that primarily focus on the accuracy of monitoring data calibration while neglecting the critical issue of sampling system blockage. This invention proposes a self-calibration device for environmental monitoring equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-calibration device for environmental monitoring equipment includes a base plate, a cleaning gas cylinder fixedly installed on the top of the base plate, a filter section provided on the base plate, the filter section including a filter box fixed on the top of the base plate, an air outlet pipe connected to the filter box and connected to the pipeline of the monitoring equipment, an activated carbon filter screen fixed inside the filter box, a mounting shell fixed on the outer surface of the filter box, and a scraping mechanism provided inside the filter box, the scraping mechanism including a rectangular shell disposed inside the filter box, and a brush fixed on the side of the rectangular shell near the activated carbon filter screen.

[0007] Preferably, the filter section further includes an air inlet pipe, the two ends of which are connected to a cleaning air tank and a mounting shell, respectively. A connecting pipe is also connected between the mounting shell and the base plate, and a valve is installed on the outer surface of the air inlet pipe.

[0008] Preferably, a rotatable impeller is provided inside the mounting housing, and the impeller is rotatably connected to the inner wall of the mounting housing via a rotating shaft, with a turntable fixed at the end of the rotating shaft away from the impeller.

[0009] Preferably, a push column is fixed on the side of the turntable away from the rotating axis, and a movable shell slides on the outer surface of the push column. The movable shell and the rectangular shell are fixedly connected by a connecting rod.

[0010] Preferably, the filter box is further provided with an air blowing mechanism, which includes a squeezing rod fixed on the movable shell, a piston cylinder fixed on the outer surface of the filter box, and a piston disc fixed at the end of the squeezing rod away from the movable shell. Both the squeezing rod and the piston disc are slidably connected to the piston cylinder.

[0011] Preferably, the air blowing mechanism further includes a flexible tube communicating with the piston cylinder, the end of the flexible tube away from the piston cylinder communicating with a rectangular shell, and an air outlet is provided on the side of the rectangular shell near the activated carbon filter screen, the air outlet being located between adjacent brushes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the scraping mechanism, the rectangular shell drives the brush to scrape and clean the activated carbon filter screen, which can effectively remove particulate impurities attached to the activated carbon filter screen, prevent them from clogging the activated carbon filter screen, maintain the normal ventilation performance of the filter, ensure the unobstructed sampling pipeline of the monitoring equipment, and thus improve the accuracy and stability of the monitoring data.

[0014] 2. With the air blowing mechanism, the moving shell moves and drives the extrusion rod to squeeze the piston cylinder, causing gas to be blown out through the air outlet of the rectangular shell through the hose. Combined with the scraping action of the brush, it can further remove the fine impurities that are scraped off by the brush but still attached to the surface of the activated carbon filter, improve the cleaning effect of the activated carbon filter, and ensure the long-term stable operation of the sampling system. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a self-calibration device for environmental monitoring equipment proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the filter box in the self-calibration device of an environmental monitoring equipment proposed in this utility model, taken from one perspective.

[0017] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4This is a schematic diagram of the internal structure of the filter box in the self-calibration device of the environmental monitoring equipment proposed in this utility model, viewed from a second perspective.

[0019] Figure 5 This utility model Figure 4 Enlarged view of the structure at point B.

[0020] In the diagram: 1. Base plate; 2. Cleaning gas tank; 31. Filter box; 32. Activated carbon filter; 33. Mounting shell; 34. Inlet pipe; 35. Valve; 36. Connecting pipe; 41. Impeller; 42. Turntable; 43. Push column; 44. Moving shell; 45. Connecting rod; 46. Rectangular shell; 47. Brush; 51. Extrusion rod; 52. Piston cylinder; 53. Piston disc; 54. Hose; 55. Air outlet. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Reference Figures 1-5 A self-calibration device for environmental monitoring equipment includes a base plate 1, a cleaning gas tank 2 fixedly installed on the top of the base plate 1, a filter section provided on the base plate 1, the filter section including a filter box 31 fixed on the top of the base plate 1, an air outlet pipe connected to the filter box 31 and connected to the pipeline of the monitoring equipment, an activated carbon filter screen 32 fixed inside the filter box 31, an installation shell 33 fixed on the outer surface of the filter box 31, and a scraping mechanism provided inside the filter box 31, the scraping mechanism including a rectangular shell 46 provided inside the filter box 31, and a brush 47 fixed on the side of the rectangular shell 46 near the activated carbon filter screen 32.

[0024] Furthermore, the filter section also includes an air inlet pipe 34, the two ends of which are connected to the cleaning air tank 2 and the mounting shell 33 respectively. A connecting pipe 36 is also connected between the mounting shell 33 and the base plate 1. A valve 35 is installed on the outer surface of the air inlet pipe 34.

[0025] Furthermore, a rotatable impeller 41 is provided inside the mounting housing 33. The impeller 41 is rotatably connected to the inner wall of the mounting housing 33 via a rotating shaft. A turntable 42 is fixed at the end of the rotating shaft away from the impeller 41.

[0026] Furthermore, a pusher 43 is fixed on the side of the turntable 42 away from the axis of rotation, and a movable shell 44 slides on the outer surface of the pusher 43. The movable shell 44 and the rectangular shell 46 are fixedly connected by a connecting rod 45.

[0027] When self-calibration of the environmental monitoring equipment is required, connect the pipeline of the environmental monitoring equipment to the gas outlet pipe and open valve 35. At this time, the clean gas in the clean gas tank 2 enters the mounting shell 33 through the inlet pipe 34, and enters the filter box 31 through the connecting pipe 36. Then, it enters the environmental monitoring equipment through the gas outlet pipe. By injecting gas, the pipeline between the standard source and the monitor is closed, so that the monitor is in the zero-point calibration state. The control system issues a zero-point calibration command, and the internal circuit and sensor of the monitor are zeroed. During this period, pay close attention to the output value of the monitor and adjust the instrument parameters until the output value is zero or close to zero in a particulate-free environment, thus completing the zero-point calibration. This is existing technology, so it will not be described in detail here.

[0028] To prevent a large number of particles in the clean gas from entering the environmental monitoring equipment and affecting calibration accuracy, an activated carbon filter 32 is used to filter the particles in the clean gas, preventing them from entering the environmental monitoring equipment. Simultaneously, after the clean gas enters the mounting housing 33, it drives a rotatable impeller 41 inside the housing 33 to rotate. The impeller 41 is rotatably connected to the inner wall of the mounting housing 33 via a rotating shaft. When the impeller 41 rotates, it drives the rotating shaft fixedly connected to it to rotate, thereby causing the turntable 42 at the other end of the shaft to rotate as well. A pusher 43 is fixed to the side of the turntable 42 away from the rotating shaft. As the turntable 42 rotates, the pusher 43... 3. The push column 43 is slidably connected to the outer surface of the movable shell 44. The circular motion of the push column 43 causes the movable shell 44 to reciprocate linearly. The movable shell 44 and the rectangular shell 46 are fixedly connected by the connecting rod 45. Therefore, the reciprocating linear motion of the movable shell 44 drives the rectangular shell 46 to reciprocate linearly within the filter box 31. A brush 47 is fixed to the side of the rectangular shell 46 near the activated carbon filter screen 32. The brush 47 scrapes and cleans the activated carbon filter screen 32, effectively removing particulate impurities attached to the activated carbon filter screen 32, preventing it from clogging the activated carbon filter screen 32, and maintaining the normal ventilation performance of the filter.

[0029] Based on Example 1, Example 2:

[0030] Reference Figures 1-5 ,

[0031] Furthermore, the filter box 31 is also equipped with an air blowing mechanism, which includes a squeezing rod 51 fixed on the movable shell 44, a piston cylinder 52 fixed on the outer surface of the filter box 31, and a piston disc 53 fixed at the end of the squeezing rod 51 away from the movable shell 44. Both the squeezing rod 51 and the piston disc 53 are slidably connected to the piston cylinder 52.

[0032] Furthermore, the air blowing mechanism also includes a hose 54 that communicates with the piston cylinder 52. The end of the hose 54 away from the piston cylinder 52 is connected to the rectangular shell 46. An air outlet 55 is provided on the side of the rectangular shell 46 near the activated carbon filter screen 32. The air outlet 55 is located between adjacent brushes 47.

[0033] During the reciprocating linear motion of the movable housing 44, the extrusion rod 51 fixed on the movable housing 44 also moves along with it. The end of the extrusion rod 51 away from the movable housing 44 is fixed with a piston disc 53. Both the extrusion rod 51 and the piston disc 53 are slidably connected to the piston cylinder 52 fixed on the outer surface of the filter box 31.

[0034] When the moving shell 44 drives the extrusion rod 51 to move into the piston cylinder 52, the extrusion rod 51 pushes the piston disc 53 to extrude the gas in the piston cylinder 52. The piston cylinder 52 is connected to the rectangular shell 46 through the hose 54. The extruded gas enters the rectangular shell 46 through the hose 54. The rectangular shell 46 has an air outlet 55 on one side near the activated carbon filter 32, and the air outlet 55 is located between adjacent brushes 47. The gas is blown out from the air outlet 55, which, together with the scraping action of the brushes 47, further removes the fine impurities that are scraped off by the brushes 47 but still attached to the surface of the activated carbon filter 32, thereby improving the cleaning effect of the activated carbon filter 32.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-calibration device for environmental monitoring equipment, comprising a base plate (1), characterized in that, A cleaning gas tank (2) is fixedly installed on the top of the base plate (1). A filter section is provided on the base plate (1). The filter section includes a filter box (31) fixed on the top of the base plate (1). An air outlet pipe is connected to the filter box (31) and is connected to the pipeline of the monitoring equipment. An activated carbon filter screen (32) is fixed inside the filter box (31). An installation shell (33) is fixed on the outer surface of the filter box (31). A scraping mechanism is provided inside the filter box (31). The scraping mechanism includes a rectangular shell (46) set inside the filter box (31). A brush (47) is fixed on the side of the rectangular shell (46) near the activated carbon filter screen (32).

2. The self-calibration device for environmental monitoring equipment according to claim 1, characterized in that, The filter section also includes an air inlet pipe (34), the two ends of which are connected to the cleaning air tank (2) and the mounting shell (33) respectively. A connecting pipe (36) is also connected between the mounting shell (33) and the base plate (1). A valve (35) is installed on the outer surface of the air inlet pipe (34).

3. The self-calibration device for environmental monitoring equipment according to claim 1, characterized in that, The mounting housing (33) is provided with a rotatable impeller (41), which is rotatably connected to the inner wall of the mounting housing (33) via a rotating shaft. A turntable (42) is fixed at the end of the rotating shaft away from the impeller (41).

4. The self-calibration device for environmental monitoring equipment according to claim 3, characterized in that, A push column (43) is fixed on the side of the turntable (42) away from the rotating axis. A movable shell (44) slides on the outer surface of the push column (43). The movable shell (44) and the rectangular shell (46) are fixedly connected by a connecting rod (45).

5. The self-calibration device for environmental monitoring equipment according to claim 4, characterized in that, The filter box (31) is also equipped with an air blowing mechanism, which includes a squeezing rod (51) fixed on the movable shell (44). A piston cylinder (52) is fixed on the outer surface of the filter box (31). A piston disc (53) is fixed at the end of the squeezing rod (51) away from the movable shell (44). Both the squeezing rod (51) and the piston disc (53) are slidably connected to the piston cylinder (52).

6. The self-calibration device for environmental monitoring equipment according to claim 5, characterized in that, The air blowing mechanism also includes a hose (54) that communicates with the piston cylinder (52). The end of the hose (54) away from the piston cylinder (52) is connected to a rectangular shell (46). An air outlet (55) is provided on the side of the rectangular shell (46) near the activated carbon filter (32). The air outlet (55) is located between adjacent brushes (47).

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