CN211086621U - Indoor environment air quality detection device - Google Patents

Abstract

The utility model relates to a building engineering detects technical field, concretely relates to indoor environment air quality detection device. This indoor ambient air quality detection device is including setting up atmospheric sampling ware, main control board, LCD screen and the printer in the casing, and the atmospheric sampling ware is connected with radon detector and formaldehyde detector respectively through the pipeline, the main control board is connected with atmospheric sampling ware, LCD screen, printer, radon detector and formaldehyde detector electricity respectively. The utility model provides an indoor environment air quality detection device simple structure is reasonable, can detect multiple harmful gas in the room air fast, and with low costs.

Description

Indoor environment air quality detection device

Technical Field

The utility model relates to a building engineering detects technical field, concretely relates to indoor environment air quality detection device.

Background

The result of indoor environment air quality detection is an important ring for evaluating construction quality, and is a basis for quality acceptance and evaluation. The indoor environment quality detection is carried out on the building, and the purpose is to detect whether the concentration of indoor environmental pollutants meets the standard requirements, so that the safety of resident personnel is ensured. According to the regulation of national standard 'control standard of indoor environmental pollution of civil building engineering', when the civil building engineering is accepted, the concentration of indoor environmental pollutants (benzene, ammonia, radon, formaldehyde and TVOC-total volatile organic compounds) must be detected. Wherein, the common simple substance form of the radon is radon which is colorless, odorless and tasteless inert gas. Because radon is a radioactive gas, when a person inhales into the body, the decaying alpha particles of radon can cause radiation damage to the respiratory system of the person, inducing lung cancer. And building materials are the most major source of radon in rooms. Formaldehyde is a toxic and colorless irritant gas, and is mainly derived from various artificial boards, various decorative materials such as wall coverings and coatings, smoke generated by smoking and the like. The formaldehyde content in the indoor air is more than 0.1mg/m³Can cause harm to respiratory system, high concentration formaldehyde has harm to nervous system, immune system and liver, and is determined as suspicious teratogenic and carcinogenic substance by world health organization. The existing air detection equipment is single in function and low in detection speed, multiple sets of equipment are needed for detection, and related equipment is increased and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a simple structure reasonable indoor environment air quality detection device, multiple harmful gas in can the short-term test room air, and with low costs.

The technical scheme of the utility model is realized like this: the utility model provides an indoor environment air quality detection device is including setting up atmospheric sampling ware, main control board, LCD screen and the printer in the casing, the atmospheric sampling ware is connected with radon detector and formaldehyde detector respectively through the pipeline, the main control board is connected with atmospheric sampling ware, LCD screen, printer, radon detector and formaldehyde detector electricity respectively.

The formaldehyde detector sequentially comprises a halogen lamp, a color filter, a condenser, a slit inlet, a reflector, a collimating mirror, a grating, a slit outlet, a sample holder and a photocell, wherein the photocell is electrically connected with the main control board and the liquid crystal screen through signal lines.

The radon detector comprises a scintillation chamber, a photomultiplier, a follower, a shaping circuit, a single-channel calibrator and a power module, wherein the scintillation chamber, the photomultiplier, the follower, the shaping circuit, the single-channel calibrator and the power module are communicated with an air inlet, a ZnAg coating is coated on the inner wall of the scintillation chamber, and the single-channel calibrator is electrically connected with a main control board.

The halogen lamp is a tungsten lamp.

The utility model provides an existing defect among the background art, have following beneficial effect:

the utility model provides an indoor environment air quality detection device simple structure is reasonable, can detect multiple harmful gas in the room air fast, and with low costs, the utility model discloses a radon detector that sets up, α example through radon in the air and daughter transmission makes the ZnAg coating in the scintillation room luminous, photomultiplier becomes this kind of light signal into the electric pulse again, the electric pulse of follower output passes through shaping circuit plastic, count regularly through the single lane calibrator again, thereby confirm the concentration of radon in the air the formaldehyde detector of setting, the compound light that gets into becomes parallel light directive component grating through plane mirror reflection and collimating mirror collimation, and image like on a slit, the monochromatic light that goes out the slit and elect appointed bandwidth falls on the sample frame by the survey sample center through the condensing mirror, the light that the sample absorbs the back transmission is received through the light gate directive, detect, turn into the light signal into the signal of telecommunication, finally show sample absorbance on the LCD screen, the master control parameter that will obtain through the limiting plate at last and predetermine the standard value and compare, judge whether radon and the air concentration that detects in the air, the photocell is accurate, up to standard detection efficiency is detected to the formaldehyde fast.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of the radon detector shown in FIG. 1;

FIG. 3 is a schematic view of the formaldehyde detector shown in FIG. 1;

in the figure: the device comprises a 1-atmosphere sampler, a 2-formaldehyde detector, a 3-liquid crystal screen, a 4-radon detector, a 5-main control panel, a 6-printer, a 21-condenser, a 22-color filter, a 23-halogen lamp, a 24-entrance slit, a 25-reflector, a 26-collimator, a 27-grating, a 28-exit slit, a 29-sample holder, a 30-photocell, a 41-scintillation chamber, a 42-photomultiplier, a 43-follower, a 44-shaping circuit, a 45-single-channel calibrator, a 46-power module and a 47-air inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An embodiment of an indoor environment air quality detection device shown in fig. 1, fig. 2 and fig. 3 comprises an air sampler 1, a main control panel 5, a liquid crystal screen 3 and a printer 6 which are arranged in a casing, wherein the air sampler 1 is respectively connected with a radon detector 4 and a formaldehyde detector 2 through pipelines, and the main control panel 5 is respectively electrically connected with the air sampler 1, the liquid crystal screen 3, the printer 6, the radon detector 4 and the formaldehyde detector 2. The formaldehyde detector 2 sequentially comprises a halogen lamp 23, a color filter 22, a condenser 21, an entrance slit 24, a reflector 25, a collimating mirror 26, a grating 27, an exit slit 28, a sample holder 29 and a photocell 30, wherein the photocell 30 is electrically connected with the main control panel 5 and the liquid crystal screen 3 through signal lines. The radon detector 4 comprises a scintillation chamber 41 communicated with an air inlet 47, a photomultiplier 42, a follower 43, a shaping circuit 44, a single-channel scaler 45 and a power module 46, wherein the inner wall of the scintillation chamber 41 is coated with a ZnAg coating, and the single-channel scaler 45 is electrically connected with the main control panel 5. The halogen lamp 23 is a tungsten lamp.

The working process of the utility model is that during the working, α examples emitted by radon and its daughter in the air make ZnAg coating in scintillation chamber 41 illuminate, photomultiplier 42 changes the optical signal into electric pulse, the electric pulse output by follower 43 is shaped by shaping circuit 44, and then timed counting is carried out by single-channel scaler 45, the pulse number in unit time is in direct proportion to radon concentration, thereby determining radon concentration in the air, meanwhile, air sampler 1 sucks the air in the room to be tested into scintillation chamber 41 in radon detector 4 by air pump, the continuous radiation emitted by tungsten lamp is projected to monochromator into slit 24 after selecting condenser 21 through color filter 22, the slit is just in the focal plane of the condenser and the monochromator, therefore the composite light entering the monochromator is changed into parallel light through plane reflection of plane reflector and collimation of the collimator mirror to shoot to grating element 27, grating 27 forms the incident composite light into continuous monochromatic spectrum which is uniformly arranged according to a certain order through diffraction, the light spectrum dispersed from the grating mirror is reflected and collimated into parallel light to be transmitted to photo detector 28, the photo detector 6, the photo detector can be detected by main control, the photo detector can detect the formaldehyde through the slit 6, the principle of photo detector 6, the photo detector can be detected, the principle of the slit 6, the principle of the photo detector 6, the photo detector can be used to detect the photo-liquid crystal, the photo-formaldehyde, the photo detector can be detected.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides an indoor environment air quality detection device, its characterized in that, including setting up atmospheric sampling ware (1), main control board (5), LCD screen (3) and printer (6) in the casing, atmospheric sampling ware (1) is connected with radon detector (4) and formaldehyde detector (2) respectively through the pipeline, main control board (5) are connected with atmospheric sampling ware (1), LCD screen (3), printer (6), radon detector (4) and formaldehyde detector (2) electricity respectively.

2. The indoor ambient air quality detection apparatus of claim 1, wherein: the formaldehyde detector (2) sequentially comprises a halogen lamp (23), a color filter (22), a condenser (21), a slit inlet (24), a reflector (25), a collimating mirror (26), a grating (27), a slit outlet (28), a sample holder (29) and a photocell (30), wherein the photocell (30) is electrically connected with the main control board (5) and the liquid crystal screen (3) through signal lines.

3. The indoor ambient air quality detection apparatus according to claim 1 or 2, characterized in that: the radon detector (4) comprises a scintillation chamber (41) communicated with an air inlet (47), a photomultiplier (42), a follower (43), a shaping circuit (44), a single-channel scaler (45) and a power module (46), wherein the inner wall of the scintillation chamber (41) is coated with a ZnAg coating, and the single-channel scaler (45) is electrically connected with a main control panel (5).

4. The indoor ambient air quality detection apparatus of claim 2, wherein: the halogen lamp (23) is a tungsten lamp.

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