CN214952887U

CN214952887U - Atmospheric fine particulate matter concentration detection device

Info

Publication number: CN214952887U
Application number: CN202121060488.9U
Authority: CN
Inventors: 王青松
Original assignee: Hefei Standeyou Testing Technology Co ltd
Current assignee: Hefei Standeyou Testing Technology Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-30
Anticipated expiration: 2031-05-18

Abstract

The utility model provides a device for detecting the concentration of atmospheric fine particles, which comprises a collecting chamber, a breather pipe, a gas drying chamber, a collecting chamber, a display screen, an exhaust port and a shell from top to bottom in sequence; the collection chamber is funnel-shaped; the radius of a port for connecting the collection chamber with the vent pipe is smaller than that of a port for contacting the collection chamber with the outside; the air pipe is arranged between the collecting chamber and the gas drying chamber; a filter screen is arranged on the bottom surface of the gas drying chamber; the bottom surface of the filter screen is provided with a wind shield; the wind shield is of a foldable structure; the side wall of the gas drying chamber is provided with a heating plate; the side wall of the acquisition chamber is provided with a beta-ray detector; the bottom of the collection chamber is provided with a collection net; a beta ray reflection source is arranged at the bottom of the collection net; the air outlet is arranged at the bottom of the concentration detection device and used for discharging air. The detection device can completely realize automatic detection and has the advantages of high accuracy and reliability of detection results and the like.

Description

Atmospheric fine particulate matter concentration detection device

Technical Field

The utility model relates to the technical field of the environment, concretely relates to atmosphere fine particles concentration detection device.

Background

The atmospheric pollutants include inhalable particles and toxic and harmful gases such as sulfur dioxide, oxynitride, carbon monoxide and the like, wherein the inhalable particles (represented by PM 2.5) can be suspended in the air continuously, so that the influences on the human health and the atmospheric visibility are great. At present, rapid online detection of components, contents and the like of fine particulate matters in the atmosphere has become a popular research work.

Because the particle size of fine particles is very little (generally below 2.5 mu m), the concentration is lower, and the distribution height is higher, and current equipment is general complicated structure, complex operation, and flexibility, portability are relatively poor, and it is difficult to detect out the chemical composition and the concentration of fine particles fast accurate, can not effectively cooperate relevant departments to send out the information forecast in time, possible reason includes: the collecting cylinder of the atmospheric particulate concentration detection device is exposed outside and cannot be protected, so that objects often impact the surface of the collecting cylinder, the surface of the collecting cylinder is damaged, and the use safety of the device is affected; when the detection device detects air, the air needs to be introduced into the device, and because the air contains a large amount of dust and moisture, when the moisture is attached to the inner surface of the collecting cylinder, the air can attract surrounding dust to be adhered to the inner surface of the collecting cylinder, so that the ventilation effect of the device is influenced, and meanwhile, in the flowing process of the air, the dust on the surface of the collecting cylinder is brought down, and the accuracy of detection data is further influenced; in addition, the detection process of the detection device is very complicated, and the data can not be recorded after centralized detection because the detection needs to be recorded step by step.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an atmospheric fine particulate matter concentration detection device, the concentration detection device includes collection room 1, breather pipe 2, gas drying chamber 701, collection room 801, display screen 4, gas vent 10, shell 11; the collection chamber 1 is funnel-shaped; the radius of a port for connecting the collection chamber 1 with the vent pipe 2 is smaller than that of a port for contacting the collection chamber 1 with the outside; the vent pipe 2 is used for connecting the collection chamber 1 and the gas drying chamber 701; a filter screen 7 is arranged on the bottom surface of the gas drying chamber 701; a wind shield 702 is arranged on the bottom surface of the filter screen 7; the wind deflector 702 is of a foldable structure; a heating plate 5 is arranged on the side wall of the gas drying chamber 701; the side wall of the acquisition chamber 801 is provided with a beta ray detector 6; a collection net 8 is arranged at the bottom of the collection chamber 801; a beta ray reflection source 9 is arranged at the bottom of the collection net 8; the exhaust port 10 is arranged at the bottom of the concentration detection device; the display screen 4 is arranged on the surface of the concentration detection device; the surface of the concentration detection device is also provided with a regulation and control plate 3.

As an optimized technical scheme of the utility model, the inner wall of gas drying chamber 701 is equipped with the heat preservation.

As a preferable technical proposal of the utility model, the aperture of the filter screen 7 is 2.6-10 μm.

As a preferable technical proposal of the utility model, the aperture of the collecting net 8 is 0.1-2.5 μm.

As an optimized technical proposal of the utility model, the thickness of the collecting net 8 is 0.5-6 mm.

As an optimal technical scheme of the utility model, collect the port radius that room 1 and breather pipe 2 are connected, collect the ratio between the port radius of room 1 and external contact and be 1: (1.5-3).

As an optimized technical scheme of the utility model, still be equipped with the aspiration pump between breather pipe 2 and the gas vent 10.

Compared with the prior art, the utility model, its beneficial effect does:

1. the utility model discloses a set up and collect the room, especially will collect the port radius that room and breather pipe are connected, collect the ratio between the port radius of room and external contact and establish to 1: (1.5-3), the gas collection speed of the concentration detection device can be increased; meanwhile, the collection chamber is arranged in a funnel shape, and the separation of large particles and small particles of gas can be realized to a certain extent by combining the centrifugal motion of the gas in the rotation process at the inlet.

2. The utility model is provided with a gas drying chamber, and a filter screen arranged on the bottom surface of the gas drying chamber is used for filtering particulate matters with larger particle sizes, so that a subsequent collecting net can collect fine gas particulate matters conveniently; the side wall of the gas drying chamber is provided with a heat preservation layer which is combined with the heating plate, so that the concentration detection device can dry and dehumidify the gas before collection, and the accuracy of the concentration detection of the fine gas particles is further improved.

3. The utility model is also provided with a wind shield, wherein the wind shield is arranged into a foldable structure, and the opening and closing of the wind shield are controlled by a regulating plate; when the atmosphere fine particles in the collecting net need to be detected, the wind shield is opened to be in an unfolded state, so that the beta-ray detector can detect the concentration of the fine particles conveniently, the loss of beta rays can be prevented from being weakened, and the accuracy of the detection of the concentration of the fine particles is further improved.

4. The utility model is also provided with a display screen and a regulating and controlling board; the display screen is mainly used for displaying the test result and reflecting the test condition; the regulating plate can be used for controlling the temperature switch and the height of the heating plate and can also be used for controlling the opening and closing state of the wind shield.

5. The utility model arranges a beta ray detector and a beta ray reflection source in the collection chamber to detect the gas particles collected on the collection net, and has good applicability; the problem that in the prior art, the particle loss is easily caused by unloading the acquisition network, and the detection result is unstable is solved; the particulate matter concentration detection device is simple in structure and low in cost; the automatic detection can be completely realized, the accuracy and the reliability of the detection result are high, and the environmental air detection requirement of common places can be met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an atmospheric fine particulate matter concentration detection apparatus in embodiment 1.

Description of the symbols: 1-a collection chamber; 2-a breather pipe; 3-temperature control plate; 4-a display screen; 5-heating the plate; a 6-beta ray detector; 7-a filter screen; 701-gas drying chamber; 702-a wind deflector; 8-collection net; 801-collection chamber; a 9-beta ray reflection source; 10-an exhaust port; 11-a housing.

Detailed Description

The contents of the present invention can be more easily understood by referring to the following detailed description of the preferred embodiments of the present invention and the included examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion.

When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

The utility model discloses a set up and collect the room, especially establish the port radius that will collect room and breather pipe and be connected, collect the ratio between the port radius of room and external contact to be 1: (1.5-3), the gas collection speed of the concentration detection device can be increased; meanwhile, the collection chamber is arranged in a funnel shape, and the separation of large particles and small particles of gas can be realized to a certain extent by combining the centrifugal motion of the gas in the rotation process at the inlet.

The utility model is provided with a gas drying chamber, and a filter screen arranged on the bottom surface of the gas drying chamber is used for filtering particulate matters with larger particle sizes, so that a subsequent collecting net can collect fine gas particulate matters conveniently; and gas drying chamber lateral wall is equipped with the heat preservation, and it combines with the hot plate, is favorable to concentration detection device to carry out drying and dehumidification to the gas before gathering, further improves the accuracy that gaseous fine particle concentration detected.

In a preferred embodiment, the inner wall of the gas drying chamber 701 is provided with an insulating layer.

In a preferred embodiment, the pore size of the filter mesh 7 is 2.6 to 10 μm. .

In a preferred embodiment, the pore size of the acquisition web 8 is 0.1-2.5 μm.

In a preferred embodiment, the thickness of the acquisition web 8 is 0.5 to 6 mm.

In a more preferred embodiment, the thickness of the acquisition web 8 is 2 mm.

In a preferred embodiment, the ratio between the radius of the port where the collection chamber 1 is connected to the vent pipe 2 and the radius of the port where the collection chamber 1 is in contact with the outside is 1: (1.5-3).

In a preferred embodiment, the ratio between the radius of the port where the collection chamber 1 is connected to the vent pipe 2 and the radius of the port where the collection chamber 1 is in contact with the outside is 1: 2.

the utility model is also provided with a wind shield, wherein the wind shield is arranged into a foldable structure, and the opening and closing of the wind shield are controlled by a regulating plate; when the atmosphere fine particles in the collecting net need to be detected, the wind shield is opened to be in an unfolded state, so that the beta-ray detector can detect the concentration of the fine particles conveniently, the loss of beta rays can be prevented from being weakened, and the accuracy of the detection of the concentration of the fine particles is further improved.

The utility model is also provided with a display screen and a regulating and controlling board; the display screen is mainly used for displaying the test result and reflecting the test condition; the regulating plate can be used for controlling the temperature switch and the height of the heating plate and can also be used for controlling the opening and closing state of the wind shield.

In a preferred embodiment, a suction pump is further provided between the vent pipe 2 and the exhaust port 10.

The utility model arranges a beta ray detector and a beta ray reflection source in the collection chamber to detect the gas particles collected on the collection net, and has good applicability; the problem that in the prior art, the particle loss is easily caused by unloading the acquisition network, and the detection result is unstable is solved; the particulate matter concentration detection device is simple in structure and low in cost; the automatic detection can be completely realized, the accuracy and the reliability of the detection result are high, and the environmental air detection requirement of common places can be met.

It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be interpreted as limiting the scope of the present invention, and that the skilled person in this field can make some insubstantial modifications and adjustments according to the above-mentioned contents of the present invention, and still fall within the scope of the present invention.

Examples

Example 1

The utility model provides an atmospheric fine particle concentration detection device, which comprises a collecting chamber 1, a breather pipe 2, a gas drying chamber 701, a collecting chamber 801, a display screen 4, an exhaust port 10 and a shell 11; the collection chamber 1 is funnel-shaped; the radius of a port for connecting the collection chamber 1 with the vent pipe 2 is smaller than that of a port for contacting the collection chamber 1 with the outside; the vent pipe 2 is used for connecting the collection chamber 1 and the gas drying chamber 701; a filter screen 7 is arranged on the bottom surface of the gas drying chamber 701; a wind shield 702 is arranged on the bottom surface of the filter screen 7; the wind deflector 702 is of a foldable structure; a heating plate 5 is arranged on the side wall of the gas drying chamber 701; the side wall of the acquisition chamber 801 is provided with a beta ray detector 6; a collection net 8 is arranged at the bottom of the collection chamber 801; a beta ray reflection source 9 is arranged at the bottom of the collection net 8; the exhaust port 10 is arranged at the bottom of the concentration detection device; the display screen 4 is arranged on the surface of the concentration detection device; the surface of the concentration detection device is also provided with a regulation and control plate 3.

The inner wall of the gas drying chamber 701 is provided with an insulating layer.

The aperture of the filter screen 7 is 2.6 μm.

The aperture of the collection net 8 is 0.1 μm.

The thickness of the acquisition web 8 is 2 mm.

The ratio of the radius of the port of the collection chamber 1 connected with the vent pipe 2 to the radius of the port of the collection chamber 1 in contact with the outside is 1: 2.

an air pump is also arranged between the vent pipe 2 and the exhaust port 10.

The foregoing examples are merely illustrative and are provided to illustrate some of the features of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. The device for detecting the concentration of the atmospheric fine particles is characterized by comprising a collecting chamber (1), a vent pipe (2), a gas drying chamber (701), a collecting chamber (801), a display screen (4), an exhaust port (10) and a shell (11); the collection chamber (1) is funnel-shaped; the radius of a port of the collection chamber (1) connected with the vent pipe (2) is smaller than that of a port of the collection chamber (1) contacted with the outside; the air pipe (2) is used for connecting the collection chamber (1) and the gas drying chamber (701); a filter screen (7) is arranged on the bottom surface of the gas drying chamber (701); a wind shield (702) is arranged on the bottom surface of the filter screen (7); the wind deflector (702) is of a foldable structure; a heating plate (5) is arranged on the side wall of the gas drying chamber (701); a beta ray detector (6) is arranged on the side wall of the acquisition chamber (801); a collection net (8) is arranged at the bottom of the collection chamber (801); a beta ray reflection source (9) is arranged at the bottom of the collection net (8); the exhaust port (10) is arranged at the bottom of the concentration detection device; the display screen (4) is arranged on the surface of the concentration detection device; the surface of the concentration detection device is also provided with a regulation and control plate (3).

2. The atmospheric fine particulate matter concentration detection apparatus according to claim 1, wherein an inner wall of the gas drying chamber (701) is provided with an insulating layer.

3. The atmospheric fine particulate matter concentration detection apparatus according to claim 1, wherein the filter screen (7) is 2.6 to 10 μm.

4. The atmospheric fine particulate matter concentration detection device according to claim 1, wherein the pore size of the collection mesh (8) is 0.1-2.5 μm.

5. The atmospheric fine particulate concentration detection device according to claim 1, wherein the thickness of the collection mesh (8) is 0.5-6 mm.

6. The atmospheric fine particulate matter concentration detection device according to claim 1, wherein a ratio between a port radius at which the collection chamber (1) is connected to the breather pipe (2) and a port radius at which the collection chamber (1) is in contact with the outside is 1: (1.5-3).

7. The apparatus for detecting the concentration of atmospheric fine particulate matter according to claim 1, wherein a suction pump is further provided between the breather pipe (2) and the exhaust port (10).