Adjustable particle cutter

Abstract

The invention discloses an adjustable particulate matter cutter which comprises a rain cover, an acceleration cylinder, an impact cylinder and a pipeline connector which are sequentially connected from top to bottom. Wherein the impact cylinder comprises an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are connected in a separable mode, and the upper cylinder and the lower cylinder are fastened through a hoop; an upper-layer plate and an impact pipe are installed in the upper cylinder, the impact pipe is fixedly installed in the middle of the upper-layer plate, and spaces on the two sides of the upper-layer plate are communicated through the impact pipe; a lower layer plate and a plurality of air outlet pipes are installed in the lower cylinder, the air outlet pipes are evenly and fixedly installed on the lower layer plate, and the spaces on the two sides of the lower layer plate are communicated through the air outlet pipes. The impact distance of the impact type cutter is adjustable, so that the cutting particle size is adjustable.

Description

Technical Field

[0001] The present invention relates to an atmospheric particulate matter monitoring technology, in particular to an adjustable particulate matter cutter. Background Art

[0002] Suspended particulate matter is a key component in ambient air quality monitoring. Suspended particulate matter of different sizes poses varying degrees of harm to the human body. In routine monitoring, it is necessary to distinguish and monitor particles based on their size.

[0003] Current mainstream particulate matter monitoring products use the beta ray method, requiring the sample air to be screened for particle size before measurement. The cutter used in this screening process is a sampling device used in ambient air particulate matter monitoring, designed to intercept particles of a specific size. Cutters primarily operate at impact and cyclonic levels. Common cutter interception sizes include 10 microns, 2.5 microns, and 1.0 microns.

[0004] When monitoring particulate matter components of different particle sizes, the monitoring station needs to use different cutters or cutter combinations for each component. If a single device is to monitor multiple components, it needs to be equipped with cutters of different specifications. For particle sizes that are not routinely monitored, a dedicated cutter must be specially customized.

[0005] During routine maintenance, the cutter needs to be cleaned of internal dust. The current mainstream cutter structure has deep grooves where dust accumulates, which increases the difficulty of cleaning to a certain extent. Summary of the Invention

[0006] In order to solve the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an adjustable particle cutter, which makes the impact distance of the impact cutter adjustable, thereby achieving adjustable cutting particle size.

[0007] The technical solution adopted by the present invention to solve the technical problem is: an adjustable particle cutter, comprising a rain cover, an acceleration cylinder, an impact cylinder and a pipe interface, wherein the rain cover, the acceleration cylinder, the impact cylinder and the pipe interface are connected in sequence from top to bottom;

[0008] Among them, the impact tube includes an upper tube and a lower tube, the upper tube and the lower tube are connected in a detachable manner, and the upper tube and the lower tube are fastened by a clamp; the upper tube is installed with an upper plate and an impact tube, the impact tube is fixedly installed in the middle of the upper plate, and the space on both sides of the upper plate is connected through the impact tube; the lower tube is installed with a lower plate and several air outlet pipes, the several air outlet pipes are evenly fixed on the lower plate, and the space on both sides of the lower plate is connected through the air outlet pipe.

[0009] Optionally, a drainage channel is further provided in the lower plate, and the end of the drainage channel is connected to a water collector.

[0010] Optionally, a plurality of scale marks are provided on the middle portion of the lower tube, and a pointer mark is provided on the outer tube wall of the upper tube.

[0011] Optionally, the upper plate and the lower plate are distributed in parallel, the impact pipe is perpendicular to the upper plate, and the air outlet pipe is perpendicular to the lower plate.

[0012] Optionally, there is a gap between the rain cover and the acceleration cylinder, and a protective net is provided in the gap.

[0013] By adopting the above technical solution, the present invention makes the impact distance of the impact cutter adjustable, thereby achieving adjustable cutting particle size. Using one cutter, different particle sizes can be cut by adjusting the gear position. The detachable structure also makes daily cleaning more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the impact cylinder of the present invention. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0017] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] like Figure 1 As shown, the present invention discloses an adjustable particulate matter cutter, comprising a rain cover 100, an acceleration cylinder 200, an impact cylinder 300, and a pipe interface 400. The rain cover 100, the acceleration cylinder 200, the impact cylinder 300, and the pipe interface 400 are fixedly connected in sequence from top to bottom. During use, ambient air flows into the cutter from below the rain cover 100, passes through the acceleration cylinder 200, and is then screened for particle size within the impact cylinder 300. The screened sample air is then discharged from the pipe interface 400.

[0019] The rain cover 100 is used to prevent rain from entering the cutter. It is surrounded by a rim, and the entire cutter is located below the rim. There is a gap between the rain cover 100 and the accelerator cylinder 200 for the entry of ambient air. A protective net is installed in this gap to filter out large particles of debris.

[0020] The acceleration cylinder 200 is used to accelerate the airflow. Its overall shape is conical, that is, the diameter of the acceleration cylinder 200 gradually decreases from top to bottom. When the airflow passes through the acceleration cylinder 200, a narrow tube effect is formed and the speed is increased, thereby facilitating the inertial collision of particulate matter with the impact cylinder 300 and being screened.

[0021] like Figure 2 As shown, the impact tube 300 includes an upper tube 310 and a lower tube 320. The upper tube 310 and the lower tube 320 are connected in a detachable manner. For example, in one embodiment of the present invention, the upper tube 310 and the lower tube 320 are connected by a threaded connection. At the same time, the upper tube 310 and the lower tube 320 are fastened by a clamp. An upper plate 311 and an impact tube 312 are installed in the upper tube 310. The impact tube 312 is fixedly installed in the middle of the upper plate 311, and the spaces on both sides of the upper plate 311 are connected through the impact tube 312. A lower plate 321 and a plurality of air outlet pipes 322 are installed in the lower tube 320. The plurality of air outlet pipes 322 are evenly fixedly installed in the lower plate 321, and the spaces on both sides of the lower plate 321 are connected through the air outlet pipes 322. The upper plate 311 and the lower plate 321 are arranged parallel to each other, the impact tube 312 is perpendicular to the upper plate 311, and the air outlet tube 322 is perpendicular to the lower plate 321. In addition, a number of scale marks are provided in the middle of the lower tube 320. The number of scale marks corresponds to the type of particulate matter to be measured. For example, if PM10, PM2.5, and PM1.0 are to be measured, three scale marks are provided on the outer wall of the lower tube 320, each scale mark corresponding to a type of particulate matter. A pointer mark is provided on the outer wall of the upper tube 310. When the pointer mark points to a scale mark, it indicates which type of particulate matter is currently being monitored. Before using the cutter of the present invention, the three scale marks need to be calibrated. This calibration needs to be determined by the distance between the impact tube 312 and the top surface of the lower plate 321.

[0022] A drainage channel 323 is further provided in the lower plate 321 , and a water collector 324 is connected to the end of the drainage channel 323 for collecting water leaking into the cutter.

[0023] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

[0024] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. An adjustable particle cutter, characterized in that: It includes a rain cover, an acceleration cylinder, an impact cylinder and a pipe interface, wherein the rain cover, the acceleration cylinder, the impact cylinder and the pipe interface are connected in sequence from top to bottom; Among them, the impact tube includes an upper tube and a lower tube, the upper tube and the lower tube are connected in a detachable manner, and the upper tube and the lower tube are fastened by a clamp; the upper tube is installed with an upper plate and an impact tube, the impact tube is fixedly installed in the middle of the upper plate, and the space on both sides of the upper plate is connected through the impact tube; the lower tube is installed with a lower plate and several air outlet pipes, the several air outlet pipes are evenly fixed on the lower plate, and the space on both sides of the lower plate is connected through the air outlet pipe.

2. The adjustable particle cutter according to claim 1, characterized in that: The lower plate is also provided with a drainage channel, and the end of the drainage channel is connected to a water collector.

3. The adjustable particle cutter according to claim 1, characterized in that: The middle of the lower tube is provided with a plurality of scale marks, and the outer tube wall of the upper tube is provided with pointer marks.

4. The adjustable particle cutter according to claim 1, characterized in that: The upper plate and the lower plate are distributed in parallel, the impact pipe is perpendicular to the upper plate, and the air outlet pipe is perpendicular to the lower plate.

5. The adjustable particle cutter according to claim 1, characterized in that: There is a gap between the rain cover and the acceleration cylinder, and a protective net is arranged in the gap.

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