CN217688439U

CN217688439U - Air particulate matter detection device

Info

Publication number: CN217688439U
Application number: CN202220384472.1U
Authority: CN
Inventors: 崔欣; 吴欢; 余发威; 周灵艳; 高丹
Original assignee: Sichuan Qinglan Testing Technology Co ltd
Current assignee: Sichuan Qinglan Testing Technology Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-10-28
Anticipated expiration: 2032-02-24

Abstract

The utility model provides an air particulate matter detection device, relate to the air detection technology field, can't carry out air purification's problem simultaneously with the instrument of solving among the prior art measure particulate matter content in the air, this air particulate matter detection device includes gas storage device, an air exhaust device for to gas storage device evacuation, a detecting element for detecting particulate matter concentration and a filter unit for stopping the particulate matter and passing through, detecting element and filter unit set gradually in the inboard of gas storage device entry end from gas storage device's the outside to gas storage device's inboard, air exhaust device sets up in gas storage device's exit end, in order to flow through detecting element from gas storage device's entry end with the air in proper order, the inboard exit end to gas storage device of filter unit and gas storage device. The utility model discloses an air particulate matter detection device can effectively collect and intercept the particulate matter in the air when particulate matter content in the survey air, plays air-purifying's effect.

Description

Air particulate matter detection device

Technical Field

The utility model belongs to the technical field of the empty gas detection technique and specifically relates to an air particulate matter detection device is related to.

Background

With the development of the industry in China in recent years, the influence of the original industrial pollutants on the air in China is increasingly intensified. At present, the frequency of haze occurrence in main major and middle-sized cities in China all year round is increased year by year, and the main reason for causing haze is that the content of harmful particulate matters suspended in air is high. These suspended harmful particulate matter is mainly caused by the emission of industrial pollutants into the air. The main gathering place of industrial enterprises is large and medium-sized cities, along with the acceleration of the urbanization process in China, the population number of the main large and medium-sized cities is gradually increased, and the population influenced by haze air is gradually increased.

The instrument that current is arranged in measuring particulate matter content in the air is generally bulky, and inconvenient carrying can't place in some narrow and small places according to the needs that detect. Especially, current instrument that is arranged in measuring particulate matter content in the air can only satisfy the test requirement, can't realize air purification's effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air particulate matter detection device to solve among the prior art problem that air purification can't be carried out simultaneously to the instrument of particulate matter content in the measurement air, the utility model discloses an air particulate matter detection device can be when particulate matter content in the survey air, particulate matter in effective collection and the interception air plays air-purifying's effect.

The utility model provides a pair of air particulate matter detection device, including gas storage device, be used for right the air exhaust device of gas storage device evacuation, the detecting element who is used for detecting particulate matter concentration and the filter unit that is used for blockking the particulate matter and passes through, the detecting element with the filter unit certainly gas storage device's outside lateral air storage device's inboard set gradually in the inboard of gas storage device entry end, air exhaust device set up in gas storage device's exit end, so that the air certainly gas storage device's entry end flows through in proper order the detecting element the filter unit with gas storage device is inboard extremely gas storage device's exit end.

As a preferred scheme of the utility model, detecting element includes flow cell, image sensor and laser emitter, the flow cell with gas storage device's entry end intercommunication, laser emitter with image sensor is in the both sides of flow cell set up relatively, with the light beam of laser emitter transmission map in on the image sensor.

As an optimized scheme of the utility model, the filter unit includes preceding filter layer and back filter layer, preceding filter layer set up to be close to one side of detecting element, the aperture d1 of preceding filter layer satisfies that 3nm is less than or equal to d1 and is less than or equal to 5nm, the aperture d2 of back filter layer satisfies that 1nm is less than or equal to d1 and is less than or equal to 3nm.

As a preferred scheme of the utility model, preceding filter layer and back filter layer are filtration membrane.

As a preferred scheme of the utility model, the gas storage device includes frame and inside casing, the inside casing set up in the frame with be provided with interface channel between the inside casing, interface channel intercommunication the outer air inlet of frame with the interior air inlet of inside casing, the detecting element with the filter unit set gradually in among the interface channel.

As a preferred scheme of the utility model, air exhaust device install in the frame with between the inside casing and with the interior gas outlet of inside casing is connected, air exhaust device's venthole extends to the outside of frame.

As a preferred scheme of the utility model, still include the handle, the handle install in gas storage device is equipped with one side of air exhaust device.

As a preferred scheme of the utility model be provided with controller and display screen on the handle, be provided with data measurement processing module in the controller, the display screen laser emitter with image sensor all with the controller is connected.

As a preferred scheme of the utility model, air exhaust device includes aspiration pump and adjust knob, the aspiration pump with adjust knob connects, adjust knob set up in on the handle.

As a preferred scheme of the utility model, the inside casing is the gas storage bag, interface channel is the rubber tube, interface channel is close to the bore of the one end of frame is less than interface channel is close to the bore of inside casing one end.

Compared with the prior art, the utility model discloses there is following positive effect:

1. the utility model provides an air particulate matter detection device, through including gas storage device, an air exhaust device for to gas storage device evacuation, a filter unit for detecting the detecting element of particulate matter concentration and being used for blockking that the particulate matter passes through, detecting element and filter unit set gradually in the inboard of gas storage device entry end from gas storage device's the outside to gas storage device's inboard, air exhaust device sets up in gas storage device's exit end, so that the air flows through detecting element in proper order from gas storage device's entry end, filter unit and the inboard exit end to gas storage device of gas storage device. Utility model's air particulate matter detection device can loop through detecting element and filter unit through making the air after getting into gas storage device, and then makes detecting element detect the particulate matter concentration in the air earlier, then filters the particulate matter in the air through filter unit, makes the air can obtain purifying when monitoring particulate matter concentration.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the air particulate detection device of the present invention;

fig. 2 is a schematic structural diagram of the detecting unit and the filtering unit of the present invention.

In the figure: 1. a gas storage device; 11. an outer frame; 111. an outer air inlet; 12. an inner frame; 13. a connecting channel; 2. an air extraction device; 21. an air outlet; 22. adjusting a knob; 23. an air pump; 3. a detection unit; 31. a laser transmitter; 32. a flow-through cell; 33. an image sensor; 34. an air inlet; 4. a filtration unit; 41. a front filter layer; 42. a rear filter layer; 5. a handle; 6. a display screen; 7. and a controller.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "head", "tail", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example 1:

the air particulate matter detection device provided by this embodiment, as shown in fig. 1-2, includes an air storage device 1, an air pumping device 2 for evacuating the air storage device 1, a detection unit 3 for detecting the concentration of particulate matter, and a filtering unit 4 for blocking the passage of particulate matter, wherein the detection unit 3 and the filtering unit 4 are sequentially disposed inside an inlet end of the air storage device 1 from the outside of the air storage device 1 to the inside of the air storage device 1, and the air pumping device 2 is disposed at an outlet end of the air storage device 1, so that air sequentially flows through the detection unit 3, the filtering unit 4, and the inside of the air storage device 1 from the inlet end of the air storage device 1 to the outlet end of the air storage device 1. The air particulate matter detection device of this embodiment can make the air loop through detecting element 3 and filter unit 4 after getting into gas storage device 1 through setting up detecting element 3 and filter unit 4 simultaneously, and then makes detecting element 3 detect the particulate matter concentration in the air earlier, then filters the particulate matter in the air through filter unit 4, and the air after flowing out through gas storage device 1 is comparatively pure, makes the air can be purified when detecting particulate matter concentration.

Preferably, the detection unit 3 comprises a flow cell 32, an image sensor 33 and a laser emitter 31, the flow cell 32 is communicated with the inlet end of the gas storage device 1, and the laser emitter 31 and the image sensor 33 are oppositely arranged at two sides of the flow cell 32 to map the light beam emitted by the laser emitter 31 on the image sensor 33. As shown in fig. 2, after the gas enters the inlet end of the gas storage device, the gas enters the flow cell 32 through the gas inlet 34 of the detection unit 3, the laser emitter 31 scans the particles in the air flowing through the flow cell 32, the image sensor 33 on the other side of the flow cell 32 obtains laser scattering signals, and the detection unit 3 takes the laser scattering signals obtained by the image sensor 33 as a quantitative basis to test the concentration of the particles.

Preferably, the filter unit 4 includes a front filter layer 41 and a rear filter layer 42, the front filter layer 41 is disposed on a side close to the detection unit 3, the aperture d1 of the front filter layer 41 satisfies 3nm. Ltoreq. D1. Ltoreq.5 nm, and the aperture d2 of the rear filter layer 42 satisfies 1 nm. Ltoreq. D1. Ltoreq.3 nm. Particulate matter in the air filters great particulate matter through preceding filter layer 41 earlier, then further intercepts tiny particulate matter through back filter layer, filters the particulate matter of equidimension not in can making the filter unit to the air through double-deck filtration, improves filter unit 4's filter effect, makes the air that flows through purer.

Preferably, the front and rear filter layers 41, 42 are filter membranes. The filter unit 4 is arranged on the gas storage device 1 in a replaceable manner. The filtering membranes with different pore sizes can selectively filter particles in the air. The filter membrane is easy to replace.

Example 2

In this embodiment, as an implementation manner of embodiment 1, the gas storage device 1 includes an outer frame 11 and an inner frame 12, the inner frame 12 is disposed in the outer frame 11, a connection channel 13 is disposed between the outer frame 11 and the inner frame 12, the connection channel 13 connects an outer gas inlet 111 of the outer frame with an inner gas inlet of the inner frame 12, and the detection unit 3 and the filtering unit 4 are sequentially disposed in the connection channel 13. The detection unit 3 and the filter unit 4 are installed between the outer frame 11 and the inner frame 12. The outer frame 11 may be a rectangular frame, a circular frame, or an oval frame to provide a support frame for the detection unit 3 and the filter unit 4.

Preferably, the air exhaust device 2 is installed between the outer frame 11 and the inner frame 12 and connected to the inner air outlet of the inner frame 12, and the air outlet 21 of the air exhaust device 2 extends to the outside of the outer frame 11. The aperture of the air outlet 21 is 0.2mm-0.4mm. The outer air inlet 111 on the outer frame 11 and the air outlet 21 of the air extraction device are arranged on different sides of the outer frame 11. The air extraction device 2 is capable of extracting air from outside the outer frame 11 through the connection channel 13 into the inner frame 12 and out through the air extraction device 2 from the inner air outlet of the inner frame 12 to outside the outer frame 11. The air extraction device 2 provides power for the circulation of air.

Preferably, the air particle detecting device of the present embodiment further includes a handle 5, and the handle 5 is installed on the side of the air storage device 1 where the air extracting device 2 is installed. This air particulate matter detection device portable is made in setting up of handle 5, can detect convenient operation, easily detect through handheld handle 5 during the detection.

Preferably, a controller 7 and a display screen 6 are arranged on the handle 5, a data measurement processing module is arranged in the controller 7, and the display screen 6, the laser emitter 31 and the image sensor 33 are all connected with the controller 7. The data measurement processing module can integrate and process the data received by the image sensor 33 of the detection unit 3 and display the detection result through the display screen 6.

Preferably, the suction device 2 comprises a suction pump 23 and an adjusting knob 22, the suction pump 23 being connected to the adjusting knob 22, the adjusting knob 22 being arranged on the handle 5. The adjusting knob 22 is provided with three gears for adjusting the speed of the air pumped by the air pump 23 to change the flow rate of the air in the air storage device 1. An adjustment knob 22 is mounted on the outside of the handle 5.

Preferably, the inner frame 12 is an air storage bag, the connecting channel 13 is a rubber tube, and the caliber of the end of the connecting channel 13 close to the outer frame 11 is smaller than that of the end of the connecting channel 13 close to the inner frame 12. Preferably, the filter unit 4 is arranged at one end of the connecting channel 13 close to the inner frame 12. The air storage bag provides buffer space for the air that flows through, and the rubber tube is close to inside casing 12 one end and can increase the filter area of filter unit 4, makes the purifying effect to the air better.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make several modifications and improvements without departing from the inventive concept, and all shall be covered by the protection scope of the present invention.

Claims

1. The air particulate matter detection device is characterized by comprising a gas storage device (1), an air exhaust device (2) used for vacuumizing the gas storage device (1), a detection unit (3) used for detecting the concentration of particulate matters and a filtering unit (4) used for blocking the particulate matters from passing through, wherein the detection unit (3) and the filtering unit (4) are arranged from the outer side of the gas storage device (1) to the inner side of the inlet end of the gas storage device (1) in sequence, and the air exhaust device (2) is arranged at the outlet end of the gas storage device (1) so as to enable air to flow through the inlet end of the gas storage device (1) in sequence from the detection unit (3), the filtering unit (4) and the inner side of the gas storage device (1) to the outlet end of the gas storage device (1).

2. An airborne particle detection apparatus according to claim 1, wherein the detection unit (3) comprises a flow cell (32), an image sensor (33) and a laser emitter (31), the flow cell (32) is communicated with the inlet end of the air storage device, and the laser emitter (31) and the image sensor (33) are oppositely arranged on both sides of the flow cell (32) so as to map the light beam emitted by the laser emitter (31) onto the image sensor (33).

3. The airborne particulate detection apparatus according to claim 1, wherein the filter unit (4) includes a front filter layer (41) and a rear filter layer (42), the front filter layer (41) is disposed on a side close to the detection unit (3), a pore size d1 of the front filter layer (41) satisfies 3nm ≤ d1 ≤ 5nm, and a pore size d2 of the rear filter layer (42) satisfies 1nm ≤ d1 ≤ 3nm.

4. The airborne particulate detection apparatus according to claim 3, wherein the front filter layer (41) and the rear filter layer (42) are filter membranes.

5. The airborne particulate matter detection apparatus according to claim 1, wherein the gas storage apparatus (1) includes an outer frame (11) and an inner frame (12), the inner frame (12) is disposed inside the outer frame (11), a connection channel (13) is disposed between the outer frame (11) and the inner frame (12), the connection channel (13) communicates an outer air inlet (111) of the outer frame with an inner air inlet of the inner frame (12), and the detection unit (3) and the filter unit (4) are sequentially disposed in the connection channel (13).

6. An airborne particle detection apparatus according to claim 5, characterized in that the air extraction device (2) is mounted between the outer frame (11) and the inner frame (12) and is connected to the inner air outlet of the inner frame (12), and the air outlet (21) of the air extraction device (2) extends to the outside of the outer frame (11).

7. The airborne particle detection apparatus according to claim 2, further comprising a handle (5), wherein the handle (5) is installed on the side of the air storage apparatus (1) where the air pumping device (2) is installed.

8. An airborne particle detection apparatus according to claim 7, wherein the air extraction device (2) comprises an air extraction pump (23) and an adjusting knob (22), the air extraction pump (23) is connected with the adjusting knob (22), and the adjusting knob (22) is arranged on the handle (5).

9. An airborne particle detection apparatus according to claim 5, wherein the inner frame (12) is an air storage bag, the connection channel (13) is a rubber tube, and the caliber of the end of the connection channel (13) close to the outer frame (11) is smaller than the caliber of the end of the connection channel (13) close to the inner frame (12).