WO2025123262A1 - 一种节能环保的园区空气监测装置 - Google Patents

一种节能环保的园区空气监测装置 Download PDF

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Publication number
WO2025123262A1
WO2025123262A1 PCT/CN2023/138617 CN2023138617W WO2025123262A1 WO 2025123262 A1 WO2025123262 A1 WO 2025123262A1 CN 2023138617 W CN2023138617 W CN 2023138617W WO 2025123262 A1 WO2025123262 A1 WO 2025123262A1
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Prior art keywords
energy
saving
monitoring device
filter
air monitoring
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English (en)
French (fr)
Inventor
周建旺
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China Energy Conservation Economic Development Jiashan Park Construction And Development Co Ltd
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China Energy Conservation Economic Development Jiashan Park Construction And Development Co Ltd
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Priority to DE212023000081.4U priority Critical patent/DE212023000081U1/de
Priority to PCT/CN2023/138617 priority patent/WO2025123262A1/zh
Publication of WO2025123262A1 publication Critical patent/WO2025123262A1/zh
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2273—Atmospheric sampling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N2001/2285—Details of probe structures
    • G01N2001/2288—Filter arrangements

Definitions

  • the utility model relates to the technical field of air monitoring, in particular to an energy-saving and environmentally friendly park air monitoring device.
  • Air monitoring refers to the sampling and measurement of pollutants in the air at fixed points, continuously or at regular intervals. In order to monitor the air, several air monitoring points are usually set up in a city, and automatic monitoring instruments are installed for continuous automatic monitoring. The monitoring results are sent back regularly to analyze and obtain relevant data.
  • the main items of air monitoring include sulfur dioxide, nitrogen monoxide, hydrocarbons, etc. Air monitoring is the basis for air quality control and reasonable evaluation of air quality.
  • a filter cartridge for filtering and intercepting dust is usually set on the outside of the detection probe (for example, the application number is 202321048415.7, and the name is a Chinese patent for an environmental air monitoring device).
  • the filter cartridge After the filter cartridge is used for a long time, its outer surface is prone to adsorb more dust impurities.
  • most of the existing air monitoring devices do not have the function of automatically cleaning the impurities adsorbed on the outer surface of the filter cartridge, and often require manual cleaning on a regular basis, which increases the workload of workers and is time-consuming and labor-intensive.
  • the utility model aims to solve the shortcomings of the prior art and proposes an energy-saving and environmentally friendly park air monitoring device.
  • an energy-saving and environmentally friendly park air monitoring device comprising a stand, on which a detection device body is mounted through a mounting frame 1, and a solar panel is also mounted on the stand through a mounting frame 2, a filter cartridge is mounted on the detection device body, and a plurality of openings are opened on the filter cartridge, and a plurality of openings are fixedly mounted inside the openings.
  • the cleaning brush abuts against the filter plate.
  • the number of the blocking plates is consistent with the number of the openings.
  • the transmission mechanism includes a fixed block and a rotating shaft, the fixed block is fixedly installed on the inner wall of the filter cartridge, the rotating shaft is rotatably installed on the bottom of the inner wall of the filter cartridge, the outer surface of the rotating shaft is fixedly sleeved with a transmission gear, an arc-shaped guide rod is fixedly connected to the fixed block, the outer surface of the arc-shaped guide rod is movably sleeved with an arc-shaped rack, and a spring is provided between the arc-shaped rack and the fixed block and on the outer surface of the arc-shaped guide rod.
  • the transmission gear is meshed with the driving gear and the arc-shaped rack respectively.
  • a battery is also provided on the detection equipment body, and the battery is electrically connected to the solar panel. Through the setting of the solar panel, solar energy can be converted into electrical energy and transmitted to the battery.
  • the battery can store the received electrical energy to supply electricity to the electrical equipment in the monitoring device, which plays a good role in energy saving and environmental protection and can greatly improve the utilization rate of energy.
  • this energy-saving and environmentally friendly park air monitoring device can filter and intercept dust particles in the gas through the filter plate arranged on the filter cartridge when the external air enters the filter cartridge from the opening, thereby preventing a large amount of dust impurities in the air from entering the filter cartridge and contaminating the detection probe, thereby protecting the detection probe and improving the accuracy of the monitoring data.
  • this energy-saving and environmentally friendly park air monitoring device when it is necessary to clean the dust impurities adsorbed and accumulated on the filter plate, by starting the dual-axis motor, the two output ends of the dual-axis motor rotate to drive the L-shaped rod and the driving gear to rotate synchronously, and the rotation of the L-shaped rod can drive the cleaning brush to clean the filter plate, and through the setting of the transmission mechanism, the kinetic energy on the driving gear can be transmitted to the blocking mechanism, driving the blocking mechanism to rotate to block the opening, preventing the dust raised during the cleaning of the filter plate from passing through the filter holes on the filter plate into the filter cartridge, thereby preventing the detection probe from being contaminated by dust when the filter plate is cleaned, and protecting the detection probe.
  • FIG1 is a schematic diagram of the overall structure of an energy-saving and environmentally friendly park air monitoring device proposed by the utility model
  • FIG2 is a three-dimensional schematic diagram of the overall structure of an energy-saving and environmentally friendly park air monitoring device proposed by the present invention from another angle;
  • FIG3 is a schematic diagram of the structure of a detection device body and a filter cartridge of an energy-saving and environmentally friendly park air monitoring device proposed by the present invention
  • FIG4 is a three-dimensional schematic diagram of the structure of a filter cartridge and a dual-axis motor of an energy-saving and environmentally friendly park air monitoring device proposed by the present invention
  • the utility model provides an energy-saving and environmentally friendly park air monitoring device: comprising a stand 1, a detection device body 2 is mounted on the stand 1 through a mounting frame 1, and a solar panel 3 is also mounted on the stand 1 through a mounting frame 2, a filter cartridge 21 is mounted on the detection device body 2, and the filter cartridge 21 is arranged at a position corresponding to the detection probe on the detection device body 2, and the filter cartridge 21
  • a plurality of openings 4 are provided on the top, and a filter plate 5 is fixedly installed inside the opening 4.
  • a dual-axis motor 6 is fixedly installed at the bottom of the filter cartridge 21.
  • An L-shaped rod 7 and a driving gear 8 are fixedly connected to the two output ends of the dual-axis motor 6, respectively.
  • a cleaning brush 9 is fixedly connected to the L-shaped rod 7, and the cleaning brush 9 abuts against the filter plate 5.
  • a transmission mechanism and a blocking mechanism are also provided inside the filter cartridge 21.
  • the blocking mechanism includes an annular groove 10 opened on the inner wall of the filter cylinder 21, and a plurality of sliders 11 are slidably connected inside the annular groove 10.
  • the same annular frame 12 is fixedly connected between the sides of the sliders 11 away from the annular groove 10, and a plurality of blocking plates 13 are fixedly connected to the top of the annular frame 12.
  • the number of the blocking plates 13 is consistent with the number of the openings 4.
  • the transmission mechanism includes a fixed block 14 and a rotating shaft 15.
  • the fixed block 14 is fixedly installed on the inner wall of the filter cartridge 21.
  • the rotating shaft 15 is rotatably installed on the bottom of the inner wall of the filter cartridge 21.
  • the outer surface of the rotating shaft 15 is fixedly sleeved with a transmission gear 16.
  • An arc-shaped guide rod 17 is fixedly connected to the fixed block 14.
  • An arc-shaped rack 18 is movably sleeved on the outer surface of the arc-shaped guide rod 17.
  • a spring 19 is provided between the arc-shaped rack 18 and the fixed block 14 and on the outer surface of the arc-shaped guide rod 17.
  • the transmission gear 16 is meshed with the driving gear 8 and the arc-shaped rack 18 respectively.
  • the detection device body 2 is also provided with a battery 20 , and the battery 20 is electrically connected to the solar panel 3 .
  • the filter plate 5 provided on the filter cartridge 21 can filter and intercept dust particles in the gas when external air enters the filter cartridge 21 from the opening 4, thereby preventing a large amount of dust impurities in the air from entering the filter cartridge 21 and contaminating the detection probe, thereby protecting the detection probe and improving the accuracy of the monitoring data;
  • the two output ends of the dual-axis motor 6 rotate to drive the L-shaped rod 7 and the driving gear 8 to rotate synchronously.
  • the driving gear 8 rotates, the kinetic energy can be transmitted to the arc-shaped rack 18 through the transmission gear 16, thereby driving the arc-shaped rack 18 to move on the arc-shaped guide rod 17, and squeezing the spring 19 to put it in a compressed state, and the movement of the arc-shaped rack 18 can drive the annular frame 12 and the blocking plate 13 to rotate synchronously, so that the blocking plate 13 rotates to a position opposite to the opening 4, and the opening 4 is blocked;
  • the dual-axis motor 6 continues to work. Due to the limited length of the arc-shaped rack 18, the transmission gear 16 slips with the arc-shaped rack 18 when rotating, so that the blocking plate 13 stays at the position of the opening 4 and continues to block it.
  • the rotation of the L-shaped rod 7 can drive the cleaning brush 9 to make a circular motion around the filter cartridge 21 to brush away the dust impurities adsorbed on the surface of the filter plate 5.
  • the opening 4 is blocked by the blocking plate 13 to prevent the dust raised during the cleaning process from passing through the filter holes on the filter plate 5 and entering the filter cartridge 21, thereby preventing the detection probe from being contaminated by dust when the filter plate 5 is cleaned.
  • the dual-axis motor 6 is turned off, and the blocking plate 13 is pushed back to its original position by the elastic force of the spring 19 , so that the blocking plate 13 releases the blocking of the opening 4 .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

一种节能环保的园区空气监测装置，包括立架（1），立架（1）上通过安装架一安装有检测设备本体（2），且立架（1）上通过安装架二还安装有太阳能板（3），检测设备本体（2）上安装有过滤筒（21），过滤筒（21）上开设有若干个开口（4），开口（4）的内部固定安装有过滤板（5），过滤筒（21）的底部固定安装有双轴电机（6）。对过滤板（5）上吸附堆积的粉尘杂质进行清洁时，通过启动双轴电机（6），双轴电机（6）的两个输出端旋转带动L型杆（7）和主动齿轮（8）同步旋转，L型杆（7）旋转可带动清洁刷（9）对过滤板（5）进行清洁，且通过传动机构的设置可将主动齿轮（8）上的动能传递至封堵机构上，驱使封堵机构旋转对开口（4）进行封堵，避免过滤板（5）清洁过程中扬起的粉尘穿过过滤板（5）上的滤孔进入过滤筒（21）内，从而避免过滤板（5）清洁时检测探头受到粉尘污染，对检测探头起到保护作用。

Description

一种节能环保的园区空气监测装置 技术领域
本实用新型涉及空气监测技术领域，尤其涉及一种节能环保的园区空气监测装置。
背景技术
空气监测指对存在于空气中的污染物质进行定点、连续或定时的采样和测量。为了对空气进行监测，一般在一个城市设立若干个空气监测点，安装自动监测的仪器作连续自动监测，将监测结果派人定期取回，加以分析并得到相关的数据。空气监测的项目主要包括二氧化硫、一氧化氮、碳氢化合物等。空气监测是大气质量控制和对大气质量进行合理评价的基础。
现有的空气监测装置，为了防止空气监测装置中的检测探头受粉尘杂质污染，通常会在检测探头的外侧设置对粉尘进行过滤拦截的过滤筒(例如申请号为202321048415.7，名称为一种环境空气监测装置的中国专利)，在过滤筒长时间使用后，其外表面容易吸附较多的粉尘杂质，而现有的空气监测装置多数不具备对过滤筒外表面吸附的杂质进行自动清洁的功能，往往需要人工定期手动清理，增加了工人的劳动量，费时费力。
实用新型内容
本实用新型的目的是为了解决现有技术中存在的缺点，而提出的一种节能环保的园区空气监测装置。
为了实现上述目的，本实用新型采用了如下技术方案：一种节能环保的园区空气监测装置，包括立架，所述立架上通过安装架一安装有检测设备本体，且所述立架上通过安装架二还安装有太阳能板，所述检测设备本体上安装有过滤筒，所述过滤筒上开设有若干个开口，所述开口的内部固定安装有 过滤板，所述过滤筒的底部固定安装有双轴电机，所述双轴电机的两个输出端上分别固定连接有L型杆和主动齿轮，所述L型杆上固定连接有清洁刷，所述过滤筒的内部还设置有传动机构和封堵机构，在双轴电机驱使清洁刷旋转对过滤板进行清洁时，通过传动机构将主动齿轮上的动能传动至封堵机构上，驱使封堵机构旋转对开口进行封堵。
作为上述技术方案的进一步描述：
所述清洁刷与过滤板相抵接。
作为上述技术方案的进一步描述：
所述封堵机构包括开设在过滤筒内壁上的环形滑槽，所述环形滑槽的内部滑动连接有若干个滑块，若干个所述滑块远离环形滑槽的一侧之间固定连接有同一个环形架，所述环形架的顶部固定连接有若干个封堵板，封堵板的尺寸大于开口的尺寸。
作为上述技术方案的进一步描述：
所述封堵板的数量与开口的数量一致。
作为上述技术方案的进一步描述：
所述传动机构包括固定块和转轴，所述固定块固定安装在过滤筒的内侧壁上，所述转轴转动安装在过滤筒内壁的底部，所述转轴的外表面固定套设有传动齿轮，所述固定块上固定连接有弧形导向杆，所述弧形导向杆的外表面活动套设有弧形齿条，所述弧形齿条和固定块之间且位于弧形导向杆的外表面设置有弹簧。
作为上述技术方案的进一步描述：
所述传动齿轮分别与主动齿轮和弧形齿条相啮合。
作为上述技术方案的进一步描述：
所述检测设备本体上还设置有蓄电池，所述蓄电池与太阳能板电性连接，通过太阳能板的设置能够将太阳能转化为电能，并传输到蓄电池内，蓄电池能够将接收到的电能存储起来，供该监测装置中的电气设备用电，起到了很好的节能环保作用，能够大大提高能源的利用率。
本实用新型具有如下有益效果：
1、与现有技术相比，该节能环保的园区空气监测装置，通过过滤筒上设置的过滤板，在外部空气从开口处进入过滤筒内时，可对气体中的粉尘颗粒进行过滤拦截，避免空气中的大量粉尘杂质进入过滤筒内而污染检测探头，对检测探头起到保护作用，提高监测数据的准确性。
2、与现有技术相比，该节能环保的园区空气监测装置，当需要对过滤板上吸附堆积的粉尘杂质进行清洁时，通过启动双轴电机，双轴电机的两个输出端旋转带动L型杆和主动齿轮同步旋转，L型杆旋转可带动清洁刷对过滤板进行清洁，且通过传动机构的设置可将主动齿轮上的动能传递至封堵机构上，驱使封堵机构旋转对开口进行封堵，避免过滤板清洁过程中扬起的粉尘穿过过滤板上的滤孔进入过滤筒内，从而避免过滤板清洁时检测探头受到粉尘污染，对检测探头起到保护作用。
附图说明
图1为本实用新型提出的一种节能环保的园区空气监测装置的整体结构立体示意图；
图2为本实用新型提出的一种节能环保的园区空气监测装置的整体结构另一角度立体示意图；
图3为本实用新型提出的一种节能环保的园区空气监测装置的检测设备本体和过滤筒等结构立体示意图；
图4为本实用新型提出的一种节能环保的园区空气监测装置的过滤筒和双轴电机等结构立体示意图；
图5为本实用新型提出的一种节能环保的园区空气监测装置的传动齿轮和主动齿轮等结构立体示意图；
图6为本实用新型提出的一种节能环保的园区空气监测装置的过滤筒剖面示意图；
图7为本实用新型提出的一种节能环保的园区空气监测装置的传动机构和主动齿轮等结构立体示意图。
图例说明：
1、立架；2、检测设备本体；3、太阳能板；4、开口；5、过滤板；6、双轴电机；7、L型杆；8、主动齿轮；9、清洁刷；10、环形滑槽；11、滑块；12、环形架；13、封堵板；14、固定块；15、转轴；16、传动齿轮；17、弧形导向杆；18、弧形齿条；19、弹簧；20、蓄电池；21、过滤筒。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
参照图1-7，本实用新型提供的一种节能环保的园区空气监测装置：包括立架1，所述立架1上通过安装架一安装有检测设备本体2，且所述立架1上通过安装架二还安装有太阳能板3，所述检测设备本体2上安装有过滤筒21，过滤筒21设置在检测设备本体2上检测探头相对应的位置处，所述过滤筒21 上开设有若干个开口4，所述开口4的内部固定安装有过滤板5，所述过滤筒21的底部固定安装有双轴电机6，所述双轴电机6的两个输出端上分别固定连接有L型杆7和主动齿轮8，所述L型杆7上固定连接有清洁刷9，所述清洁刷9与过滤板5相抵接，所述过滤筒21的内部还设置有传动机构和封堵机构，在双轴电机6驱使清洁刷9旋转对过滤板5进行清洁时，通过传动机构将主动齿轮8上的动能传动至封堵机构上，驱使封堵机构旋转对开口4进行封堵；
通过过滤筒21上设置的过滤板5，在外部空气从开口4处进入过滤筒21内时，可对气体中的粉尘颗粒进行过滤拦截，避免空气中的大量粉尘杂质进入过滤筒21内而污染检测探头，对检测探头起到保护作用，提高监测数据的准确性。
所述封堵机构包括开设在过滤筒21内壁上的环形滑槽10，所述环形滑槽10的内部滑动连接有若干个滑块11，若干个所述滑块11远离环形滑槽10的一侧之间固定连接有同一个环形架12，所述环形架12的顶部固定连接有若干个封堵板13，所述封堵板13的数量与开口4的数量一致。
所述传动机构包括固定块14和转轴15，所述固定块14固定安装在过滤筒21的内侧壁上，所述转轴15转动安装在过滤筒21内壁的底部，所述转轴15的外表面固定套设有传动齿轮16，所述固定块14上固定连接有弧形导向杆17，所述弧形导向杆17的外表面活动套设有弧形齿条18，所述弧形齿条18和固定块14之间且位于弧形导向杆17的外表面设置有弹簧19，所述传动齿轮16分别与主动齿轮8和弧形齿条18相啮合。
所述检测设备本体2上还设置有蓄电池20，所述蓄电池20与太阳能板3电性连接。
工作原理：使用时，通过过滤筒21上设置的过滤板5，在外部空气从开口4处进入过滤筒21内时，可对气体中的粉尘颗粒进行过滤拦截，避免空气中的大量粉尘杂质进入过滤筒21内而污染检测探头，对检测探头起到保护作用，提高监测数据的准确性；
当需要对过滤板5上吸附堆积的粉尘杂质进行清洁时，通过启动双轴电机6，双轴电机6的两个输出端旋转带动L型杆7和主动齿轮8同步旋转，在主动齿轮8旋转时，可通过传动齿轮16将动能传递至弧形齿条18上，从而带动弧形齿条18在弧形导向杆17上移动，并对弹簧19进行挤压使其处于压缩状态，且弧形齿条18移动可带动环形架12和封堵板13同步旋转，使得封堵板13旋转至与开口4位置相对，将开口4进行封堵；
在封堵板13将开口4关闭后，双轴电机6继续工作，由于弧形齿条18的长度有限，传动齿轮16旋转时则与弧形齿条18发生打滑现象，使得封堵板13停留在开口4位置处并对其持续封堵；
且L型杆7旋转可带动清洁刷9围绕过滤筒21做圆周运动，对过滤板5表面吸附的粉尘杂质进行刷除，且在清洁刷9对过滤板5进行清洁时，利用封堵板13将开口4处封堵起来，可避免清洁过程中扬起的粉尘穿过过滤板5上的滤孔进入过滤筒21内，避免过滤板5清洁时检测探头受到粉尘污染；
在过滤板5清洁完成后，关闭双轴电机6，通过弹簧19的弹力作用推动封堵板13复位，使封堵板13解除对开口4的封堵。
最后应说明的是：以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，尽管参照前述实施例对本实用新型进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本实用新型的精神 和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。

Claims (7)

  1. 一种节能环保的园区空气监测装置，包括立架(1)，其特征在于：所述立架(1)上通过安装架一安装有检测设备本体(2)，且所述立架(1)上通过安装架二还安装有太阳能板(3)，所述检测设备本体(2)上安装有过滤筒(21)，所述过滤筒(21)上开设有若干个开口(4)，所述开口(4)的内部固定安装有过滤板(5)，所述过滤筒(21)的底部固定安装有双轴电机(6)，所述双轴电机(6)的两个输出端上分别固定连接有L型杆(7)和主动齿轮(8)，所述L型杆(7)上固定连接有清洁刷(9)，所述过滤筒(21)的内部还设置有传动机构和封堵机构，在双轴电机(6)驱使清洁刷(9)旋转对过滤板(5)进行清洁时，通过传动机构将主动齿轮(8)上的动能传动至封堵机构上，驱使封堵机构旋转对开口(4)进行封堵。
  2. 根据权利要求1所述的一种节能环保的园区空气监测装置，其特征在于：所述清洁刷(9)与过滤板(5)相抵接。
  3. 根据权利要求1所述的一种节能环保的园区空气监测装置，其特征在于：所述封堵机构包括开设在过滤筒(21)内壁上的环形滑槽(10)，所述环形滑槽(10)的内部滑动连接有若干个滑块(11)，若干个所述滑块(11)远离环形滑槽(10)的一侧之间固定连接有同一个环形架(12)，所述环形架(12)的顶部固定连接有若干个封堵板(13)。
  4. 根据权利要求3所述的一种节能环保的园区空气监测装置，其特征在于：所述封堵板(13)的数量与开口(4)的数量一致。
  5. 根据权利要求1所述的一种节能环保的园区空气监测装置，其特征在于：所述传动机构包括固定块(14)和转轴(15)，所述固定块(14)固定安装在过滤筒(21)的内侧壁上，所述转轴(15)转动安装在过滤筒(21)内壁的底部，所述转轴(15)的外表面固定套设有传动齿轮(16)，所述固 定块(14)上固定连接有弧形导向杆(17)，所述弧形导向杆(17)的外表面活动套设有弧形齿条(18)，所述弧形齿条(18)和固定块(14)之间且位于弧形导向杆(17)的外表面设置有弹簧(19)。
  6. 根据权利要求5所述的一种节能环保的园区空气监测装置，其特征在于：所述传动齿轮(16)分别与主动齿轮(8)和弧形齿条(18)相啮合。
  7. 根据权利要求1所述的一种节能环保的园区空气监测装置，其特征在于：所述检测设备本体(2)上还设置有蓄电池(20)，所述蓄电池(20)与太阳能板(3)电性连接。
PCT/CN2023/138617 2023-12-14 2023-12-14 一种节能环保的园区空气监测装置 Pending WO2025123262A1 (zh)

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