Atmospheric pollutant sampling and detecting device

Abstract

The utility model relates to atmospheric sampling detection device technical field, especially air pollutant sampling detection device, including sampling cylinder, the fixed installation of air inlet pipe has at sampling cylinder top, the fixed installation of air outlet pipe has at sampling cylinder side wall, the inside setting of sampling cylinder has sampling detection subassembly, the utility model discloses the air inlet filter hole place of setting outer protection cylinder and clean scraping ring at air inlet pipe, and setting inner shielding cylinder in the inner wall of air inlet pipe, the integral design of outer protection cylinder and inner shielding cylinder, after the completion of air intake, can utilize the force of outer protection cylinder sliding down to the air inlet filter hole shielding drive clean scraping ring to the dust on the surface of air inlet filter hole and carry out shielding, realize the self -cleaning of air inlet filter hole, can drive inner shielding cylinder to shield in the inside of air inlet pipe simultaneously in the cleaning process, can avoid the risk that the granule after refining enters the inside of air inlet pipe through air inlet filter hole, influence gas detection, improve gas detection precision.

Description

Technical Field

[0001] This utility model relates to the technical field of atmospheric sampling and detection devices, and in particular to an atmospheric pollutant sampling and detection device. Background Technology

[0002] Atmospheric pollutant sampling and detection devices are a type of specialized equipment used to collect pollutant samples from the atmospheric environment and to perform qualitative or quantitative analysis on parameters such as the type, concentration, and composition of pollutants in the samples. They typically include inlet and outlet pipes and detection components installed inside the detection cylinder.

[0003] To improve detection accuracy, a filter screen is installed at the air intake pipe to filter dust and impurities in the gas, reducing the risk of dust entering the detection device. Simultaneously, to prevent dust from clogging the filter screen, an automatic cleaning component is usually installed to clean the dust, preventing blockage and reducing air intake. However, in actual cleaning processes, while some devices attempt to clean the air intake filter holes using brushes or high-pressure airflow, the cleaning operation lacks coordinated design with the internal protection of the air intake pipe. During cleaning, fine particles brushed off or blown away can easily enter the air intake pipe through unblocked air intake filter holes, interfering with the detection components and reducing detection accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an atmospheric pollutant sampling and detection device. It solves the technical problem that during the cleaning process, fine particles brushed off or blown away can easily enter the air intake pipe through unshielded air intake filter holes, interfering with the detection components and reducing detection accuracy. The new device achieves self-cleaning of the air intake filter holes while simultaneously driving the inner shielding cylinder to shield the inside of the air intake pipe during the cleaning process. This prevents fine particles from entering the air intake pipe through the air intake filter holes, thus avoiding the impact on gas detection and improving gas detection accuracy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an air pollutant sampling and detection device, including a sampling tube, an air inlet pipe fixedly installed at the top of the sampling tube, an air outlet pipe fixedly installed on the side wall of the sampling tube, a sampling and detection component provided inside the sampling tube, an air inlet filter hole opened on the outer peripheral wall of the air inlet pipe, an outer protective cylinder slidably sleeved on the outer wall of the air inlet filter hole, a cleaning scraper ring fixedly installed at the bottom end of the outer protective cylinder, an inner shielding cylinder slidably connected to the inner wall of the air inlet pipe, and the bottom end face of the cleaning scraper ring being lower than the bottom end face of the cleaning scraper ring; A push rod is fixedly installed at the top of the inner shielding cylinder. The top of the push rod passes through the air inlet pipe and is integrally set with the push rod. A drive assembly is set inside the sampling cylinder. The drive assembly is used to drive the outer protective cylinder to slide along the height direction of the air inlet pipe.

[0006] Preferably, the sampling and detection assembly includes an air pump installed inside the sampling cylinder, the bottom end of the air inlet pipe passing through the sampling cylinder and connected to the air inlet of the air pump, a detection cylinder installed at the bottom end of the air pump, a filter box installed on one side of the detection cylinder, the two ends of the detection cylinder being fixedly connected to the air pump and the filter box respectively through connecting pipes, and the end of the air outlet pipe being fixedly connected to the filter box.

[0007] Preferably, a connecting plate is provided at the top of the air intake pipe, and the top of the push rod is fixedly connected to the connecting plate.

[0008] Preferably, connecting rods are fixedly installed on both sides of the bottom end of the connecting plate, and the bottom ends of the connecting rods are fixedly connected to the outer wall circular plate of the outer protective cylinder.

[0009] Preferably, the outer wall of the air pump is fixedly fitted with a support ring to support the drive assembly, and the bottom end of the support ring is provided with a timing driver electrically connected to the drive assembly.

[0010] Preferably, the drive assembly includes a transmission screw rotatably connected to the top of the support ring, and a telescopic rod is fixedly installed on the top of the support ring, with the telescopic rod and the transmission screw located on opposite sides of the air pump.

[0011] Preferably, a driving component is threaded onto the outer peripheral wall of the transmission screw, and a lifting rod is fixedly installed on the top of the driving component. The top ends of the lifting rod and the transmission screw respectively pass through the sampling cylinder and the outer wall circular plate of the outer protective cylinder and are fixedly connected.

[0012] Preferably, a rotary motor is fixedly installed at the bottom end of the support ring, and the output end of the rotary motor is fixedly connected to the transmission lead screw.

[0013] By employing the above technical solution, this utility model provides an air pollutant sampling and detection device, which has at least the following beneficial effects: 1. This utility model integrates an outer protective cylinder and a cleaning scraper ring at the air intake filter hole of the air intake pipe, and an inner shielding cylinder on the inner wall of the air intake pipe. After air intake is completed, the force of the outer protective cylinder sliding downward to shield the air intake filter hole drives the cleaning scraper ring to shield the dust adhering to the surface of the air intake filter hole, thus achieving self-cleaning of the air intake filter hole. At the same time, during the cleaning process, the inner shielding cylinder simultaneously shields the inside of the air intake pipe, which can prevent the risk of fined particles entering the inside of the air intake pipe through the air intake filter hole and affecting gas detection, thereby improving the accuracy of gas detection.

[0014] 2. By setting a timer driver and electrically connecting the timer driver to the drive component and the air pump, the present invention can control the operation of the drive component and the air pump in a timely manner, sample and detect the gas in the environment at regular intervals, detect the gas at different time periods, analyze the dynamic change trend of pollution, and distinguish between instantaneous sudden pollution and continuous pollution. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of the sampling tube of this utility model; Figure 3 This is a schematic diagram of the outer protective cylinder of this utility model after it is closed; Figure 4 This is a schematic diagram of the structure of the outer protective cylinder of this utility model after it is opened; Figure 5 This is a cross-sectional view of the inside of the air intake pipe of this utility model; Figure 6 This is a schematic diagram of the internal structure of the air intake pipe after the inner shielding cylinder of this utility model is closed.

[0017] In the diagram: 1. Sampling cylinder; 2. Air inlet pipe; 21. Air inlet filter; 3. Air outlet pipe; 4. Sampling and detection assembly; 41. Air pump; 411. Support ring; 42. Detection cylinder; 421. Connecting pipe; 43. Filter box; 5. Outer protective cylinder; 51. Connecting rod; 6. Cleaning scraper ring; 7. Inner shielding cylinder; 71. Push rod; 72. Connecting plate; 8. Drive assembly; 81. Transmission screw; 82. Rotary motor; 83. Drive component; 84. Lifting rod; 85. Telescopic rod; 9. Timer driver. Detailed Implementation

[0018] 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.

[0019] Example 1 Based on the existing problem that during the cleaning process, fine particles brushed off or blown away can easily enter the air intake pipe 2 through the unshielded air intake filter 21, interfering with the detection components and reducing detection accuracy, this embodiment provides an air pollutant sampling and detection device. This device can achieve self-cleaning of the air intake filter 21 while simultaneously driving the inner shielding cylinder 7 to shield the inside of the air intake pipe 2 during the cleaning process. This avoids the risk of fine particles entering the air intake pipe 2 through the air intake filter 21, thus preventing impact on gas detection and improving gas detection accuracy. Please refer to... Figure 1 - Figure 5 The air pollutant sampling and detection device includes a sampling cylinder 1, an air inlet pipe 2 fixedly installed at the top of the sampling cylinder 1, an air outlet pipe 3 fixedly installed on the side wall of the sampling cylinder 1, a sampling and detection component 4 installed inside the sampling cylinder 1, an air inlet filter hole 21 opened on the outer peripheral wall of the air inlet pipe 2, an outer protective cylinder 5 slidably sleeved on the outer wall of the air inlet filter hole 21, a cleaning scraper ring 6 fixedly installed at the bottom end of the outer protective cylinder 5, an inner shielding cylinder 7 slidably connected to the inner wall of the air inlet pipe 2, and the bottom end face of the cleaning scraper ring 6 being lower than the bottom end face of the cleaning scraper ring 6; external gas is drawn into the sampling cylinder 1 through the air inlet pipe 2, and the collected gas is detected by the sampling and detection component 4 inside the sampling cylinder 1, and finally the detected gas is discharged into the external atmosphere through the air outlet pipe 3.

[0020] Because the atmosphere contains dust and impurities, if these impurities enter the detection cylinder 42 along with the gas through the inlet pipe 2, they will form dirt inside the detection cylinder 42, affecting the accuracy of gas detection. To avoid this situation, such as... Figure 2 - Figure 6 As shown, a push rod 71 is fixedly installed at the top of the inner shielding cylinder 7. The top of the push rod 71 passes through the air inlet pipe 2 and is integrally set with the push rod 71. A drive assembly 8 is set inside the sampling cylinder 1. The drive assembly 8 is used to drive the outer protective cylinder 5 to slide along the height direction of the air inlet pipe 2. The outer peripheral wall of the air inlet pipe 2 is set to have an air inlet filter hole 21, which can filter dust and impurities in the air inlet and ensure the purity of the gas entering the test.

[0021] The sampling and detection component 4 can periodically sample and detect gases in the environment, analyze the dynamic changes in pollution over different time periods, and distinguish between instantaneous and continuous pollution. Figure 1 - Figure 2As shown, the sampling and detection assembly 4 includes a vacuum pump 41 installed inside the sampling cylinder 1. The bottom end of the inlet pipe 2 passes through the sampling cylinder 1 and is connected to the inlet of the vacuum pump 41. A detection cylinder 42 is installed at the bottom of the vacuum pump 41. A filter box 43 is installed on one side of the detection cylinder 42. The two ends of the detection cylinder 42 are fixedly connected to the vacuum pump 41 and the filter box 43 respectively through connecting pipes 421. The end of the outlet pipe 3 is fixedly connected to the filter box 43. An activated carbon mesh plate is installed inside the filter box 43, which can filter harmful impurities in the gas. By starting the vacuum pump 41, a negative pressure is generated inside the inlet pipe 2, which allows the gas in the external environment to be drawn into the detection cylinder 42 through the connecting pipe 421 for detection of harmful gas concentration. After detection, the gas enters the filter box 43 through the connecting pipe 421 at the bottom, where the filter box 43 filters the harmful substances in the gas to ensure that the discharged gas is unpolluted.

[0022] Furthermore, a connecting plate 72 is provided at the top of the intake pipe 2, and the top of the push rod 71 is fixedly connected to the connecting plate 72. The inner shielding cylinder 7 inside the intake pipe 2 is connected to the outer protective cylinder 5 through the push rod 71 and the connecting plate 72. This ensures that the inner shielding cylinder 7 slides synchronously while the outer protective cylinder 5 is sliding. The inner shielding cylinder 7 shields the inner wall of the intake pipe 2. After the air intake is completed, the outer protective cylinder 5 drives the cleaning scraper 6 to slide on the outer wall of the intake pipe 2. The cleaning scraper 6 can clean the dust and impurities adhering to the surface of the intake filter hole 21. In the undetected state, the outer protective cylinder 5 is sleeved on the outer wall of the intake pipe 2, which can shield the intake filter hole 21 and reduce the adhesion of external dust.

[0023] During the cleaning process of the intake filter 21 by the outer protective cylinder 5 driving the cleaning scraper ring 6 to slide, the filter screen at the intake filter 21 is cleaned by mechanical friction, which breaks down the agglomerated dust, dispersing the originally large particles into multiple smaller dust particles. These refined particles can directly break through the filter screen's pore size and enter the intake cylinder with the airflow, making them easier to enter the intake pipe 2 and difficult to clean. To avoid this situation, such as... Figure 5 - Figure 6 As shown, connecting rods 51 are fixedly installed on both sides of the bottom end of the connecting plate 72. The bottom end of the connecting rod 51 is fixedly connected to the outer wall circular plate of the outer protective cylinder 5. Since the bottom end of the inner shielding cylinder 7 is lower than the bottom end of the cleaning scraper ring 6, during the process of driving the cleaning scraper ring 6 to slide and clean the dust, the inner wall of the air intake pipe 2 can be directly sealed and shielded by the inner shielding cylinder 7, thereby avoiding the risk of fined particles entering the interior of the air intake pipe 2 through the air intake filter hole 21.

[0024] Example 2 Based on Example 1, such as Figure 1 - Figure 3As shown, the device is also equipped with a timer driver 9 electrically connected to the drive assembly 8, which is used to control the operation of the drive assembly 8 and enable the device to sample and detect external gas at regular intervals. The outer wall of the air pump 41 is fixedly fitted with a support ring 411 to support the drive assembly 8. The bottom end of the support ring 411 is provided with a timer driver 9 electrically connected to the drive assembly 8, and the timer driver 9 is electrically connected to the air pump 41. When the drive assembly 8 is controlled to work, the air pump 41 can be automatically controlled to work, so that the inside of the air inlet pipe 2 is in a negative pressure state, and external gas is drawn into the detection cylinder 42 for detection.

[0025] Specifically, such as Figure 3 - Figure 4 As shown, the drive assembly 8 includes a transmission screw 81 rotatably connected to the top of the support ring 411. A telescopic rod 85 is fixedly installed on the top of the support ring 411. The telescopic rod 85 and the transmission screw 81 are located on both sides of the air pump 41, respectively. By installing the telescopic rod 85 and the lifting rod 84 on both sides of the air pump 41 and fixing the top end to the outer protective cylinder 5, the stability during the sliding process of pushing the outer protective cylinder 5 can be ensured.

[0026] In summary, a driving component 83 is threaded onto the outer peripheral wall of the transmission screw 81. A lifting rod 84 is fixedly installed on the top of the driving component 83. The top of the lifting rod 84 and the top of the transmission screw 81 are respectively fixedly connected through the outer circular plate of the sampling tube 1 and the outer protective tube 5. When the transmission screw 81 rotates, it drives the driving component 83 to slide along the height direction of the transmission screw 81, which enables the lifting rod 84 to push the outer protective tube 5 upward and drive the inner shielding tube 7 to disengage from the air inlet filter hole 21 at the air inlet pipe 2, exposing the air inlet filter hole 21. This allows external gas to enter the interior of the air inlet pipe 2 through the air inlet filter hole 21, and the filter screen at the air inlet filter hole 21 can block dust and impurities in the gas.

[0027] Specifically, a rotary motor 82 is fixedly installed at the bottom end of the support ring 411. The output end of the rotary motor 82 is fixedly connected to the transmission screw 81. The rotary motor 82 is used to drive the transmission screw 81 to rotate.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air pollutant sampling and detection device, comprising a sampling tube (1), an air inlet pipe (2) fixedly installed at the top of the sampling tube (1), an air outlet pipe (3) fixedly installed on the side wall of the sampling tube (1), and a sampling and detection assembly (4) disposed inside the sampling tube (1), characterized in that: The outer peripheral wall of the air intake pipe (2) is provided with an air intake filter hole (21), and an outer protective cylinder (5) is slidably sleeved on the outer wall of the air intake filter hole (21). A cleaning scraper ring (6) is fixedly installed at the bottom end of the outer protective cylinder (5). An inner shielding cylinder (7) is slidably connected to the inner wall of the air intake pipe (2). The bottom end face of the cleaning scraper ring (6) is lower than the bottom end face of the cleaning scraper ring (6). The top of the inner shielding cylinder (7) is fixedly installed with a push rod (71). The top of the push rod (71) passes through the air inlet pipe (2) and is integrated with the push rod (71). The sampling cylinder (1) is provided with a drive assembly (8). The drive assembly (8) is used to drive the outer protective cylinder (5) to slide along the height direction of the air inlet pipe (2).

2. The air pollutant sampling and detection device according to claim 1, characterized in that: The sampling and detection assembly (4) includes an air pump (41) installed inside the sampling tube (1). The bottom end of the air inlet pipe (2) passes through the sampling tube (1) and is connected to the air inlet of the air pump (41). A detection tube (42) is installed at the bottom end of the air pump (41). A filter box (43) is installed on one side of the detection tube (42). The two ends of the detection tube (42) are fixedly connected to the air pump (41) and the filter box (43) respectively through connecting pipes (421). The end of the air outlet pipe (3) is fixedly connected to the filter box (43).

3. The air pollutant sampling and detection device according to claim 2, characterized in that: The top end of the air intake pipe (2) is provided with a connecting plate (72), and the top end of the push rod (71) is fixedly connected to the connecting plate (72).

4. The air pollutant sampling and detection device according to claim 3, characterized in that: Connecting rods (51) are fixedly installed on both sides of the bottom end of the connecting plate (72), and the bottom end of the connecting rods (51) is fixedly connected to the outer wall circular plate of the outer protective cylinder (5).

5. The atmospheric pollutant sampling and detection device according to claim 2, characterized in that: The outer wall of the air pump (41) is fixedly fitted with a support ring (411) to support the drive assembly (8), and the bottom end of the support ring (411) is provided with a timing driver (9) that is electrically connected to the drive assembly (8).

6. The air pollutant sampling and detection device according to claim 1, characterized in that: The drive assembly (8) includes a transmission screw (81) rotatably connected to the top of the support ring (411). A telescopic rod (85) is fixedly installed on the top of the support ring (411). The telescopic rod (85) and the transmission screw (81) are located on both sides of the air pump (41).

7. The air pollutant sampling and detection device according to claim 6, characterized in that: The drive screw (81) is threaded with a drive component (83) on its outer peripheral wall. A lifting rod (84) is fixedly installed on the top of the drive component (83). The top ends of the lifting rod (84) and the drive screw (81) pass through the sampling tube (1) and the outer protective tube (5) respectively and are fixedly connected.

8. The air pollutant sampling and detection device according to claim 5, characterized in that: A rotary motor (82) is fixedly installed at the bottom end of the support ring (411), and the output end of the rotary motor (82) is fixedly connected to the transmission screw (81).

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