CN208239261U - A kind of PM2.5 detection device - Google Patents

Abstract

The utility model discloses a kind of PM2.5 detection device, including attachment cap, reflection unit and power supply module, attachment cap are connected with outside air, and suction mechanism is arranged in attachment cap, and reflection unit is connected with suction mechanism；Reflection unit includes air inlet pipe, contains gas bucket and exhaust pipe, air inlet pipe and exhaust pipe are connected with Sheng gas bucket, air inlet pipe is connected with suction mechanism, exhaust pipe is connected with outside air, contain setting laser testing element and controller in gas bucket, laser testing element is connected with controller, and laser testing element and controller are connected with power supply module.When being tested, getter device suck up outside air, the air of absorption, which is stored in, to be contained in gas bucket, and the laser testing element contained in gas bucket tests air, so that controller obtains test result.Getter device draw air improves gettering efficiency, the outside air drawn by containing the storage of gas bucket, and getter device is located in attachment cap, increases the buffer level of air, improves measuring accuracy.

Description

A kind of PM2.5 detection device

Technical field

The utility model relates to airborne particulate Concentration Detection fields, more particularly to a kind of PM2.5 detection device.

Background technique

In PM2.5 detector test atmosphere partial size less than 2.5 μm of fine particle quality detector, the basic principle is that swash Light carries out Digital Signal Processing, measurement parameter setting, knot after dust particle scatters, to the pulse signal of optical sensor output Fruit shows, key, time, date etc. are all controlled by built-in microcomputer (MCU) and realized.A branch of spy is generated by dedicated laser module Fixed laser, when particulate matter passes through, signal can be detected by the digital circuit blocks of ultra-high sensitive, by signal data It carries out intelligent recognition to analyze to obtain grain count and granular size, it is dense with quality to obtain particle diameter distribution according to the calibration technique of profession Conversion formula is spent, the mass concentration unified with official's unit is finally obtained.

PM2.5 detector can simultaneously test and analyze two partial size shelves (0.3,2.5), and instrument default measure setup is Before, that is, instrument is taken in air inlet measurement unit volume after dust particle number 20 seconds that display is set automatically by user at this time After being set to, user just takes instrument to measure at air outlet 20 seconds at this time, according to the disengaging gas air port dirt currently measured after having measured Angstrom particle number calculates purification efficiency automatically, and user only needs with this instrument respectively to air purifier air inlet and air outlet It measuring, it can accurately reflect its purification front and back particulate matter number in real time, and calculate its purification efficiency percentage, because This, is highly suitable for air purifier clean-up effect analysis detection.However, existing PM2.5 detection device collects gas at present When efficiency it is lower so that the PM2.5 content in gas and air in detection device has error, influence detection accuracy.

Therefore, how to change in the prior art, PM2.5 detector influences detection accuracy due to inefficiency when collecting gas Status, be those skilled in the art's urgent problem to be solved.

Utility model content

The purpose of the utility model is to provide a kind of PM2.5 detection devices, to solve the above-mentioned problems of the prior art, The efficiency that detecting instrument collects gas is improved, and then improves detection accuracy.

To achieve the above object, the utility model provides following scheme: the utility model provides a kind of PM2.5 detection and sets It is standby, including attachment cap, reflection unit and power supply module, the attachment cap be connected with outside air, setting in the attachment cap Suction mechanism, the reflection unit are connected with the suction mechanism；

The reflection unit includes air inlet pipe, contains gas bucket and exhaust pipe, the air inlet pipe and the exhaust pipe with it is described It contains gas bucket to be connected, the air inlet pipe is connected with the suction mechanism, and the exhaust pipe is connected with outside air, the Sheng Setting laser testing element and controller, the laser testing element are connected with the controller in gas bucket, the laser testing Element and the controller are connected with the power supply module.

Preferably, the suction mechanism includes motor, blade and escape pipe, and the blade passes through connecting rod and the motor Output shaft transmission be connected, the motor is connected with the power supply module, and the escape pipe is connected with the air inlet pipe.

Preferably, outlet lid is arranged in one end that the escape pipe is connected with the air inlet pipe.

Preferably, one end setting rotation lid that the air inlet pipe is connected with the escape pipe.

Preferably, the controller includes control panel and display screen, and the control panel and the display screen are respectively provided with In on the outer wall of the reflection unit.

Preferably, PM2.5 detection device further includes pedestal, and the pedestal is set to the lower part of the reflection unit, described Power supply module is fixed on the pedestal.

Preferably, the power supply module includes battery case, and the battery case is open rectangular-shape, is set in the battery case Partition is set, there is the groove to match with the battery case on the pedestal, the battery case passes through sliding bar and the pedestal It is slidably connected.

Preferably, the bottom setting elastic component and buckle of the battery case, when the battery case is located in the groove, institute It states elastic component and is in compressive state, button is set on the pedestal, one end of the button can be clamped with the buckle.

Preferably, PM2.5 detection device further includes handle, and the handle and the reflection unit are rotatablely connected.

The utility model achieves following technical effect: the PM2.5 detection device of the utility model compared with the existing technology, Including attachment cap, reflection unit and power supply module, attachment cap is connected with outside air, suction mechanism is arranged in attachment cap, instead Injection device is connected with suction mechanism；Reflection unit includes air inlet pipe, contains gas bucket and exhaust pipe, air inlet pipe and exhaust pipe with Sheng Gas bucket is connected, and air inlet pipe is connected with suction mechanism, and exhaust pipe is connected with outside air, contains and laser testing is arranged in gas bucket Element and controller, laser testing element are connected with controller, and laser testing element and controller are connected with power supply module.Into When row test, getter device suck up outside air, the air of absorption, which is stored in, to be contained in gas bucket, contains the laser testing element in gas bucket Air is tested, so that controller obtains test result.Getter device draw air improves gettering efficiency, by containing gas The outside air that bucket storage is drawn, and getter device is located in attachment cap, increases the buffer level of air, improves test essence Degree.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without any creative labor, can also basis These attached drawings obtain other attached drawings.

Fig. 1 is the overall structure diagram of the PM2.5 detection device of the utility model；

Fig. 2 is the structural schematic diagram of the reflection unit of the PM2.5 detection device of the utility model；

Fig. 3 is the structural schematic diagram of the suction mechanism of the PM2.5 detection device of the utility model；

Fig. 4 is the structural schematic diagram of the battery case of the PM2.5 detection device of the utility model；

Wherein, 1 is attachment cap, and 2 be reflection unit, and 3 be power supply module, and 4 be air inlet pipe, and 5 is contain gas bucket, and 6 be exhaust pipe, 7 be motor, and 8 be blade, and 9 be escape pipe, and 10 be connecting rod, and 11 be display screen, and 12 be pedestal, and 13 be battery case, and 14 be partition, 15 be handle.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The purpose of the utility model is to provide a kind of PM2.5 detection devices, to solve the above-mentioned problems of the prior art, The efficiency that detecting instrument collects gas is improved, and then improves detection accuracy.

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have Body embodiment is described in further detail the utility model.

Please refer to Fig. 1-4, wherein Fig. 1 is the overall structure diagram of the PM2.5 detection device of the utility model, and Fig. 2 is The structural schematic diagram of the reflection unit of the PM2.5 detection device of the utility model, Fig. 3 are that the PM2.5 detection of the utility model is set The structural schematic diagram of standby suction mechanism, Fig. 4 are the structural schematic diagram of the battery case of the PM2.5 detection device of the utility model.

The utility model provides a kind of PM2.5 detection device, including attachment cap 1, reflection unit 2 and power supply module 3, connection Cap 1 is connected with outside air, and suction mechanism is arranged in attachment cap 1, and reflection unit 2 is connected with suction mechanism；

Reflection unit 2 includes air inlet pipe 4, contains gas bucket 5 and exhaust pipe 6, and air inlet pipe 4 and exhaust pipe 6 are connected with Sheng gas bucket 5 Logical, air inlet pipe 4 is connected with suction mechanism, and exhaust pipe 6 is connected with outside air, contains and laser testing element is arranged in gas bucket 5 And controller, laser testing element are connected with controller, laser testing element and controller are connected with power supply module 3.

When being tested, getter device suck up outside air, the air of absorption, which is stored in, to be contained in gas bucket 5, is contained in gas bucket 5 Laser testing element tests air, so that controller obtains test result.Getter device draw air improves air-breathing effect Rate, the outside air drawn by containing the storage of gas bucket 5, and getter device is located in attachment cap 1, increases the buffering journey of air Degree, improves measuring accuracy.

Specifically, suction mechanism includes motor 7, blade 8 and escape pipe 9, and blade 8 is defeated by connecting rod 10 and motor 7 Shaft transmission is connected, and motor 7 is connected with power supply module 3, and escape pipe 9 is connected with air inlet pipe 4.Motor 7 is connected with controller, electricity When machine 7 works, the outside air of absorption enters reflection unit 2 by escape pipe 9, enters via air inlet pipe 4 and contains in gas bucket 5.

Wherein, outlet lid is arranged in one end that escape pipe 9 is connected with air inlet pipe 4, and outlet lid is slidably connected at exhaust pipe 6 Top will rotate lid from air inlet pipe by extracting outlet lid, and one end setting rotation lid that air inlet pipe 4 is connected with escape pipe 9 One end turns on.Outside air, which passes through rotation lid and enters via air inlet pipe 4, to be contained in gas bucket 5, then is flowed by outlet lid from gas bucket 5 is contained Out, while opening detection device, outlet lid and rotation lid is opened, enables air that can pass through.

Testing result is easily known for the ease of user, and controller includes control panel and display screen 11, control plane Plate and display screen 11 are all set on the outer wall of reflection unit 2, and controller exists the acquisition of laser testing element testing as the result is shown On display screen 11.In present embodiment, laser detection element by transmitting laser, contain gas bucket 5 in air have Grain object, laser scatter in containing gas bucket 5, and treated data are shown on display screen 11.Meanwhile outlet lid and rotation lid can It is controlled by controller, improves detection efficiency

More specifically, PM2.5 detection device further includes pedestal 12, pedestal 12 is set to the lower part of reflection unit 2, power supply group Part 3 is fixed on pedestal 12.Attachment cap 1 and pedestal 12 are respectively arranged at the upper and lower ends of reflection unit 2, and pedestal 12 is power supply group Part 3 provides installation foundation.

Further, power supply module 3 includes battery case 13, and battery case 13 is open rectangular-shape, setting in battery case 13 Partition has the groove to match with battery case 13 on pedestal 12, and battery case 13 is slidably connected by sliding bar with pedestal 12, need When replacing, overhauling battery, battery case 13 is extracted out, battery case 13 is pushed into pedestal 12 after completing replacement, drawer type design It is more convenient.

To avoid battery case 13 from sliding, the bottom setting elastic component and buckle of battery case 13, battery case 13 is in the grooves When, elastic component is in compressive state, and button is arranged on pedestal 12, and one end of button can be clamped with buckle.Battery case 13 is pushed into After pedestal 12, button and buckle are clamped, and prevent battery case 13 from skidding off, when needing to extract battery case 13 out, by lower button, and button and card Button unclamps, and the elastic component of 13 bottom of battery case pops up battery case 13, time saving and energy saving.

Further, PM2.5 detection device further includes handle, and handle and reflection unit 2 are rotatablely connected, and is convenient for carrying inspection Measurement equipment.

The PM2.5 detection device of the utility model, when being tested, getter device suck up outside air, the air of absorption It is stored in and contains in gas bucket 5, the laser testing element contained in gas bucket 5 tests air, so that controller obtains test result. Getter device draw air, raising gettering efficiency, the outside air drawn by containing the storage of gas bucket 5, and getter device is located at company It connects in cap 1, increases the buffer level of air, improve measuring accuracy.

Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up Described, the content of the present specification should not be construed as a limitation of the present invention.

Claims (9)

1. a kind of PM2.5 detection device, it is characterised in that: including attachment cap, reflection unit and power supply module, the attachment cap with Outside air is connected, and suction mechanism is arranged in the attachment cap, and the reflection unit is connected with the suction mechanism；

The reflection unit includes air inlet pipe, contains gas bucket and exhaust pipe, the air inlet pipe and the exhaust pipe with the Sheng gas Bucket is connected, and the air inlet pipe is connected with the suction mechanism, and the exhaust pipe is connected with outside air, the Sheng gas bucket Interior setting laser testing element and controller, the laser testing element are connected with the controller, the laser testing element It is connected with the power supply module with the controller.

2. PM2.5 detection device according to claim 1, it is characterised in that: the suction mechanism include motor, blade and Escape pipe, the blade are connected by connecting rod with the transmission of the output shaft of the motor, the motor and the power supply module phase Even, the escape pipe is connected with the air inlet pipe.

3. PM2.5 detection device according to claim 2, it is characterised in that: the escape pipe is connected with the air inlet pipe Outlet lid is arranged in logical one end.

4. PM2.5 detection device according to claim 3, it is characterised in that: the air inlet pipe is connected with the escape pipe Logical one end setting rotation lid.

5. PM2.5 detection device according to claim 1, it is characterised in that: the controller includes control panel and shows Display screen, the control panel and the display screen are all set on the outer wall of the reflection unit.

6. PM2.5 detection device according to claim 1, it is characterised in that: further include pedestal, the pedestal is set to institute The lower part of reflection unit is stated, the power supply module is fixed on the pedestal.

7. PM2.5 detection device according to claim 6, it is characterised in that: the power supply module includes battery case, described Battery case is open rectangular-shape, partition is arranged in the battery case, has on the pedestal and matches with the battery case Groove, the battery case are slidably connected by sliding bar and the pedestal.

8. PM2.5 detection device according to claim 7, it is characterised in that: elastic component is arranged in the bottom of the battery case And buckle, when the battery case is located in the groove, the elastic component is in compressive state, button is set on the pedestal, One end of the button can be clamped with the buckle.

9. PM2.5 detection device according to claim 1-8, it is characterised in that: it further include handle, the handle It is rotatablely connected with the reflection unit.