CN-122016587-A - Be used for indoor building materials air detection device

CN122016587ACN 122016587 ACN122016587 ACN 122016587ACN-122016587-A

Abstract

The invention relates to the technical field of environment detection, and provides an indoor building material air detection device which comprises a main sampling module for collecting samples and a processing cabin fixedly connected with the sampling module, wherein the sampling module comprises a sampling channel which is vertically arranged, a filter membrane holder which is arranged in the sampling channel and is used for holding a filter membrane, and a power unit which is used for providing constant negative pressure, the processing cabin is fixedly connected with the side wall of the sampling channel, a sliding channel which is used for allowing the filter membrane holder to slide is arranged between the processing cabin and the side wall of the sampling channel, and a purging mechanism which is used for drying the filter membrane is arranged in the processing cabin. The invention has the beneficial effects that the filter membrane holder is moved into the treatment cabin after the sampling is finished, the purging mechanism in the treatment cabin uses the continuously dried low-flow-rate air flow to sweep and blow the filter membrane, so that the excessive moisture on the filter membrane is taken away, the filter membrane is dried rapidly, uniformly and nondestructively, and the purposes of rapid detection, continuous monitoring and field evaluation are achieved.

Inventors

MA LIPENG
YAO MINGYI
WANG CAN
LIU LIMING
TONG JINCAI
YANG TAO
ZUO TONG
CHEN YU
WANG BO
RUAN JUNHUI

Assignees

中建八局天津建设工程有限公司
天津大学福州国际联合学院(天津大学福州国际研究院)

Dates

Publication Date: 20260512
Application Date: 20260325

Claims (10)

1. The utility model provides an be used for indoor building materials air detection device, a serial communication port, including main sampling module (1) and with sampling module fixed connection's processing cabin (2) that are used for gathering the sample, sampling module includes vertical sampling channel (11), the filter membrane holder (12) that are used for the centre gripping filter membrane that set up in sampling channel (11) and be used for providing the power pack of invariable negative pressure, be provided with the slip passageway that is used for allowing filter membrane holder (12) to slide between processing cabin (2) and the lateral wall fixed connection of sampling channel (11) and the two, be provided with in processing cabin (2) and be used for carrying out drying treatment's purge mechanism (7) to the filter membrane.
2. An air detection device for indoor building materials according to claim 1, characterized in that the filter membrane holder (12) is provided with a support frame (3) for pushing the filter membrane holder (12) to slide in the sliding channel, the filter membrane holder (12) is in clamping fit with the support frame (3), and a first driving piece (31) for pushing the support frame (3) to slide in the sliding channel is arranged between the support frame (3) and the sampling channel (11).
3. An air detection device for indoor building materials according to claim 2, characterized in that a guiding component (4) is arranged between the supporting frame (3) and the sliding channel, the guiding component (4) comprises a guiding groove (41) formed in the sliding channel and a guiding strip (42) fixedly connected with the supporting frame (3), the guiding strip (42) is located in the guiding groove (41), and the guiding strip (42) is slidingly connected with the guiding groove (41).
4. An air detection device for indoor building materials according to claim 3, characterized in that the two sides of the supporting frame (3) perpendicular to the guiding strips (42) are fixedly connected with a plugging plate (5) for plugging the sliding channel.
5. The indoor building material air detection device according to claim 1, wherein the filter membrane holder (12) comprises an inner ring (121) and an outer ring (122), the edge of the filter membrane is sleeved outside the inner ring (121), the outer ring (122) is sleeved outside the inner ring (121), and the edge of the filter membrane is clamped between the inner ring (121) and the outer ring (122).
6. The indoor building material air detection device according to claim 5, wherein the filter membrane bottom is provided with a dynamic supporting mechanism (6) for supporting the filter membrane bottom, the dynamic supporting mechanism (6) comprises a supporting net (61) for supporting the filter membrane and a sliding rod (62) arranged in the sampling channel (11) in a sliding manner, the sliding rod (62) is fixedly connected with the supporting net (61), the sliding rod (62) is connected with a second driving piece (63) for driving the sliding rod (62) to slide, and the second driving piece (63) is fixedly connected with the sampling channel (11).
7. The air detection device for indoor building materials according to claim 1, wherein the purging mechanism (7) is located at the bottom end of the filter membrane, the purging mechanism (7) comprises an air inlet pipe (71) for conveying clean and dry air into the treatment cabin (2) and an air distribution plate (72) for uniformly distributing the air, the air distribution plate (72) is fixedly connected with the treatment cabin (2), the air distribution plate (72) is fixedly connected with the air inlet pipe (71), a cavity (721) communicated with the air inlet pipe (71) is formed in the air distribution plate (72), an air outlet hole (722) is formed in one end, far away from the air inlet pipe (71), of the air distribution plate (72), and the air outlet hole (722) is communicated with the cavity (721).
8. The indoor building material air detection device according to claim 7, wherein a heating plate (8) for heating the filter membrane is arranged at the top end of the processing cabin (2), and the heating plate (8) is fixedly connected with the processing cabin (2).
9. The indoor building material air detection device according to claim 8, wherein the top end of the processing cabin (2) is provided with an air outlet pipe (9) for exhausting air and an electromagnetic control valve arranged on the air outlet pipe (9), and the air outlet pipe is fixedly connected with the processing cabin (2).
10. The device for detecting indoor building material air according to claim 9, wherein the side wall of the processing cabin (2) is provided with a material taking opening (21), the material taking opening (21) is provided with an opening and closing plate (10), a clamping structure (20) for fixing the opening and closing plate (10) is arranged between the opening and closing plate (10) and the processing cabin (2), the clamping structure (20) comprises a fixing block (201) fixedly connected with the processing cabin (2), a clamping groove (202) formed in the fixing block (201) and a clamping strip (203) fixedly connected with the opening and closing plate (10), and the clamping strip (203) is matched with the clamping groove (202) in a clamping mode.

Description

Be used for indoor building materials air detection device Technical Field The invention relates to the technical field of environment detection, in particular to an air detection device for indoor building materials. Background In the indoor decoration or reconstruction process, various building materials can continuously release pollutants into the air, which becomes one of the main factors affecting the indoor air quality. These contaminants include not only gaseous contaminants such as formaldehyde, volatile organic compounds, etc. of great concern, but also a similarly important but often neglected particulate building material dust floating in the air, which mainly comes from the cutting, grinding and installation processes of wood, gypsum, stone, etc., and thus accurate monitoring of such PM2.5 is required. In the mass concentration monitoring of the ambient air PM2.5, the filter membrane sampling-weighing method is a currently accepted standard method. However, under special conditions of high humidity, such as southern return to the south, basement, and wet room just after construction, the high humidity in the ambient air can cause the filter membrane to absorb a large amount of water vapor in the sampling process, so that "virtual quality improvement" is generated during weighing, and measurement accuracy is seriously affected. The traditional solution is to place the sampled filter membrane in a constant temperature and humidity box for balancing for 24 to 48 hours, and weigh the filter membrane after the water is fully escaped. Although the method can ensure accuracy, the time is extremely long, and the requirements of rapid detection, field evaluation or large-scale continuous monitoring cannot be met, so that a new technical scheme is required to be provided to solve the technical problems. Disclosure of Invention The application provides an indoor building material air detection device, which moves a filter membrane holder into a treatment cabin after sampling is finished, and sweeps and blows the filter membrane by using a continuously dried low-flow-rate air flow by a sweeping mechanism in the treatment cabin, so that redundant moisture on the filter membrane is taken away, the filter membrane is quickly, uniformly and nondestructively dried on the premise that the sampling air flow is not interfered, and the purposes of quick detection, continuous monitoring and field evaluation are achieved. The application provides an indoor building material air detection device, which comprises a main sampling module for collecting samples and a processing cabin fixedly connected with the sampling module, wherein the sampling module comprises a sampling channel which is vertically arranged, a filter membrane holder which is arranged in the sampling channel and is used for holding a filter membrane, and a power unit which is used for providing constant negative pressure, the processing cabin is fixedly connected with the side wall of the sampling channel, a sliding channel which is used for allowing the filter membrane holder to slide is arranged between the processing cabin and the side wall of the sampling channel, and a purging mechanism which is used for drying the filter membrane is arranged in the processing cabin. When the air detection device is used, firstly, the power unit is utilized to enable the sampling channel to be in a negative pressure state, then indoor air stored or installed with building materials enters the sampling channel, the air passes through the filter membrane on the filter membrane holder, suspended particles PM2.5 are impacted by the filter membrane and stay on the filter membrane, after sampling is completed, the filter membrane holder is pushed to enter the treatment cabin through the sliding channel, the bottom end of the filter membrane is purged with low-flow-rate air flow by utilizing the purging structure in the treatment cabin, so that moisture on the filter membrane is taken away by dry and clean air flow, rapid, nondestructive and uniform drying of the filter membrane is realized, and the purposes of rapid detection, continuous monitoring and on-site evaluation are achieved. Preferably, the filter membrane holder is provided with a support frame for pushing the filter membrane holder to slide in the sliding channel, the filter membrane holder is matched with the support frame in a clamping way, and a first driving piece for pushing the support frame to slide in the sliding channel is arranged between the support frame and the sampling channel. By adopting the technical scheme, when the filter membrane holder is supported by the support frame in the sampling stage, the support frame is pushed to slide in the sliding channel by the first driving piece after the sampling is finished, so that the support frame drives the filter membrane holder to enter the treatment cabin, and the filter membrane holder is matched with the support frame in a clamping way, so that t