Gas pretreatment structure of ambient air quality detector

Abstract

The utility model belongs to the technical field of detection devices, and discloses a gas pretreatment structure of an ambient air quality detector, which comprises a pipeline, a fan is connected in the pipeline, a plurality of supports matched with an inner cavity in shape are arranged in the pipeline, and the inner ends of the supports are connected with filter plates. According to the scheme, the rotating wheels are arranged on one sides of the filter plates, in the air pretreatment process, a user can judge the flowing speed of air between the filter plates by observing the rotating speed of the rotating wheels, and when a certain rotating wheel stops rotating or the rotating speed is too low, the user can judge the flowing speed of the air between the filter plates. The air flow in the area is too low, namely, the corresponding filter plate is blocked, so that a user can accurately disassemble, clean and replace the blocked filter plate without disassembling all the filter plates, convenience is brought to the maintenance work of the pretreatment structure by the user, and the maintenance efficiency of the pretreatment structure is improved. And the long-term stable operation of the detection device is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field especially relates to a gas pretreatment structure of environmental air quality detector. BACKGROUND

[0002] The gas pretreatment structure of environmental air quality detector is usually designed to ensure measurement accuracy, remove impurities, and adapt to different gas concentration ranges. Its main function is to preliminarily process the gas in the air sample so that the subsequent sensor can more accurately detect the target gas.

[0003] The gas pretreatment structure usually includes a filtration system, mainly used to remove large particulate matter such as dust, smoke, etc. in the air to prevent these particles from entering the detection sensor. Common filtration systems can use different types of filter screens, such as activated carbon, HEPA filter screens, etc. for physical filtration.

[0004] The filter plates may become clogged during long-term use, resulting in a decrease in gas flow efficiency. Some existing air quality detectors have removable filter screens in their gas pretreatment structures, making it easy for users to clean or replace them. However, multiple filter plates generally do not become clogged at the same time. When air flow efficiency decreases, it is difficult for users to determine which filter plate has become clogged. Disassembling and cleaning all filter plates is also inconvenient. SUMMARY

[0005] The utility model intends to provide a gas pretreatment structure of environmental air quality detector to solve the problems raised in the background art. In this scheme, a rotating wheel is provided on one side of each filter plate. During the pretreatment of air, users can determine the flow rate of air between each filter plate by observing the rotational speed of the rotating wheel. When a rotating wheel stops rotating or rotates too slowly, it means that the air flow in that area is too low, which means that the corresponding filter plate has become clogged. Therefore, users can accurately disassemble, clean, and replace the clogged filter plate without having to disassemble all filter plates, making maintenance of the pretreatment structure more convenient and ensuring the long-term stable operation of the detection device.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The gas pretreatment structure of an ambient air quality detector comprises a pipeline, the inside of the pipeline is connected with a fan, and a plurality of supports matched with the shape of the inner cavity of the pipeline are arranged in the pipeline; a plurality of clamping grooves for fixing the supports are formed in the inner wall of the pipeline; a filter plate is connected to the inner end of the support; a plurality of filter plates are sequentially arranged on one side of the fan along the inner cavity of the pipeline; a rotating wheel is arranged on the side of the plurality of filter plates close to the fan; the rotating wheel is arranged in an annular structure; a plurality of annularly equidistantly arranged blades are connected to the inner end of the rotating wheel,

[0008] A plurality of mounting rods are connected to the inner wall of the pipeline; the rotating wheel is rotationally connected to the mounting rod; a plurality of observation windows matched with the rotating wheel are formed in the outer end of the pipeline.

[0009] Preferably, a filter screen is connected to the inner wall of the opening end of the pipeline away from the fan; the filter screen covers the opening end of the pipeline.

[0010] Preferably, the plurality of filter plates are sequentially arranged into a primary efficiency filter plate, an activated carbon filter plate and a HEPA high efficiency filter plate from the filter screen to the fan.

[0011] Preferably, a plurality of through holes matched with the supports and connected with the inner cavity of the pipeline are formed in the bottom end of the pipeline; the supports penetrate through the through holes and are connected to the outer end of the pipeline by bolts.

[0012] Preferably, a plurality of annularly equidistantly arranged color blocks are connected to the outer end of the rotating wheel; and a double convex lens is connected to the inner end of the observation window.

[0013] Compared with the prior art, the technical scheme has the beneficial effects that:

[0014] The rotating wheel is arranged on one side of the plurality of filter plates; in the process of pretreating the air, the user can judge the flow speed of the air between each filter plate by observing the rotating speed of the rotating wheel; when a rotating wheel stops rotating or rotates too slowly, it means that the air flow in the area is too low, which means that the corresponding filter plate is clogged; therefore, the user can accurately disassemble, clean and replace the clogged filter plate without disassembling all the filter plates, which brings convenience to the user in the maintenance of the pretreatment structure and guarantees the long-term stable operation of the detection device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a schematic diagram of the overall structure according to the present application;

[0016] Fig. 2 is a schematic diagram of the internal structure of the pipeline according to the present application;

[0017] Fig. 3 is a schematic diagram of the rotating wheel structure according to the present application.

[0018] : 1, pipeline; 2, fan; 3, support; 4, filter plate; 5, clamping groove; 6, filter screen;

[0019] 7, runner; 8, observation window. DETAILED DESCRIPTION

[0020] The utility model will be described in further detail below in combination with the drawings and embodiments:

[0021] A gas pretreatment structure of an environmental air quality detector, as shown in FIGS. 1-3, includes a pipeline 1, the inside of which is connected with a fan 2, and the inside of the pipeline 1 is provided with multiple supports 3 matching the shape of the inner cavity, multiple clamping grooves 5 for fixing the supports 3 are opened on the inner wall of the pipeline 1, the inner end of the support 3 is connected with a filter plate 4, multiple filter plates 4 are arranged in turn on one side of the fan 2 along the inner cavity of the pipeline 1, and the multiple filter plates 4

[0022] A runner 7 is arranged on the side close to the fan 2, the runner 7 is arranged in an annular structure, the inner end of the runner 7 is connected with multiple blades arranged in an annular equidistant manner, multiple mounting rods are connected on the inner wall of the pipeline 1, the runner 7 is rotationally connected with the mounting rods, multiple observation windows 8 used in cooperation with the runner 7 are opened on the outer end of the pipeline 1.

[0023] The gas pretreatment structure of the environmental air quality detector is generally designed to ensure measurement accuracy, remove impurities, and adapt to different concentration ranges of gases. Its main function is to preliminarily process the gases in the air sample so that the subsequent sensor can more accurately detect the target gas. The gas pretreatment structure usually includes a filtering system, which is mainly used to remove large particulate matter in the air, such as dust, smoke, etc., to prevent these particles from entering the detection sensor. Common filtering systems can use different types of filter screens, such as activated carbon, HEPA filter screens, etc., for physical filtration. The filter plate may be clogged during long-term use, resulting in a decrease in gas flow efficiency. Some existing environmental air quality detectors have a detachable filter screen design to facilitate users to clean or replace it. However, multiple filter plates generally do not clog at the same time. When the air flow efficiency decreases, it is difficult for the user to determine which filter plate is clogged, and it is also troublesome to disassemble and clean all filter plates.

[0024] One end of the pipeline 1 is connected with the detection device main body in the scheme, the user can suck air into through the opening end of the filter screen 6 side by the start fan 2, the air can be effectively filtered through the filtration of multiple filter plates 4, and is discharged to the inside of the detection device main body through the other end of the pipeline 1, when the air passes between adjacent filter plates 4, the corresponding rotating wheel 7 is driven to rotate, the user can observe the rotating condition of the rotating wheel 7 through the observation window 8, when a certain rotating wheel 7 stops rotating or rotates too slowly, it means that the air flow of the region is too low, which means that the filter plate 4 near the air inlet side of the pipeline 1 of the rotating wheel 7 is blocked, at this time, the user can disassemble the blocked filter plate 4 and the support 3 from the pipeline 1 to clean or replace.

[0025] The inner wall of the opening end of the pipeline 1 away from the fan 2 is connected with the filter screen 6, and the filter screen 6 covers the opening end of the pipeline 1.

[0026] The setting of the filter screen 6 in the scheme can protect the inside of the pipeline 1, to prevent larger debris from accidentally entering the inside of the pipeline 1.

[0027] The multiple filter plates 4 are sequentially arranged as a primary filter plate, an activated carbon filter plate and a HEPA high-efficiency filter plate from the filter screen 6 to the fan 2.

[0028] The primary filter screen in the scheme is mainly used for filtering large particles and dust in the air, and is the most basic filter layer, which can block larger particles and pollutants, protect the subsequent filter screen from excessive dust, the activated carbon filter screen can adsorb odor molecules, chemical gases and harmful substances in the air, effectively remove pollutants in the air, improve air quality, and the HEPA high-efficiency filter screen is a high-efficiency filter, which can effectively filter fine particles such as bacteria, viruses, pollen and dust in the air, and provide cleaner and healthier air.

[0029]

[0030] Multiple through holes matched with the support 3 and communicating with the inner cavity of the pipeline 1 are formed in the bottom end of the pipeline 1, the support 3 penetrates the through holes and is connected to the outer end of the pipeline 1 through bolts.

[0031] The support 3 is connected to the pipeline 1 through bolts in the scheme, which is convenient for the user to disassemble, when the support 3 is located in the inside of the pipeline 1, it is fixed through the clamping groove 5 to ensure its stability, when disassembling, the user removes the bolts and takes out the support 3 from the through hole.

[0032] Multiple color blocks arranged in a ring shape at equal intervals are connected to the outer end of the rotating wheel 7, and a double convex lens is connected to the inner end of the observation window 8. ​

[0033] The setting of the color block at the outer end of the rotating wheel 7 improves the display effect when the rotating wheel 7 rotates, and facilitates the user to observe the rotating speed through the observation window 8. The setting of the double convex lens inside the observation window 8 can magnify the perspective image of the rotating wheel 7, further helping the user to observe the rotating speed of the rotating wheel 7.

[0034] The specific implementation process is as follows:

[0035] In use, the user starts the fan 2 to suck air into through the opening end of the filter screen 6. The air is filtered by the plurality of filter plates 4 and is discharged from the other end of the pipeline 1. When the air passes between adjacent filter plates 4, the corresponding rotating wheel 7 is driven to rotate. The user can observe the rotating condition of the rotating wheel 7 through the observation window 8. When a certain rotating wheel 7 stops rotating or rotates too slowly, it means that the air flow in the area is too low, and the filter plate 4 near the rotating wheel 7 on the air inlet side of the pipeline 1 is blocked. At this time, the user can unscrew the corresponding bolt on the bracket 3 from the pipeline 1, then pull out the bracket 3 from the through hole, and clean or replace the filter plate 4.

[0036] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A gas pre-treatment structure for an ambient air quality detector, characterized by: The utility model provides a pipeline (1), the inside of pipeline (1) is connected with fan (2), and the inside of pipeline (1) is provided with multiple supports (3) matched with its inner cavity shape, the inner wall of pipeline (1) is provided with multiple clamping grooves (5) for fixing support (3), the inner end of support (3) is connected with filter plate (4), multiple filter plate (4) are sequentially arranged in the one side of fan (2) along the inner cavity of pipeline (1), and multiple filter plate (4) are provided with runner (7) near the one side of fan (2), runner (7) is provided as annular structure, and the inner end of runner (7) is connected with multiple leafs that are annular equidistance arrangement, the inner wall of pipeline (1) is connected with multiple mounting rods, runner (7) is rotatably connected with mounting rod, the outer end of pipeline (1) is provided with multiple observation windows (8) for cooperating with runner (7).

2. A gas pre-processing structure for an ambient air quality detector as claimed in claim 1, characterized in that: The inner wall of the opening end of the pipeline (1) away from the fan (2) is connected with a filter screen (6), and the filter screen (6) covers the opening end of the pipeline (1).

3. A gas pre-processing structure for an ambient air quality detector as claimed in claim 1, wherein: Multiple filter plates (4) are sequentially arranged as primary filter plates, activated carbon filter plates and HEPA high-efficiency filter plates from the filter screen (6) to the fan (2).

4. A gas pre-processing structure for an ambient air quality detector as claimed in claim 1, characterized by: Multiple through holes matched with the supports (3) and connected with the inner cavity of the pipeline (1) are formed in the bottom end of the pipeline (1), the supports (3) penetrate through the through holes and are connected to the outer end of the pipeline (1) by bolts.

5. A gas pre-processing structure for an ambient air quality detector as claimed in claim 1, characterized by: Multiple color blocks arranged in an annular equidistant manner are connected to the outer end of the runner (7), and the inner end of the observation window (8) is connected with a lenticular lens.

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