CN107416366B - 一种手持式颗粒物收集装置 - Google Patents

一种手持式颗粒物收集装置 Download PDF

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CN107416366B
CN107416366B CN201710508023.7A CN201710508023A CN107416366B CN 107416366 B CN107416366 B CN 107416366B CN 201710508023 A CN201710508023 A CN 201710508023A CN 107416366 B CN107416366 B CN 107416366B
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杜亚明
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Abstract

本发明涉及一种手持式颗粒物收集装置，包括依次卡接在一起的入风口组件、水平段组件和出风口组件，以及设置在入风口组件入口处的颗粒筛选器；水平段组件靠近入风口组件的一侧设置有颗粒物滤膜；颗粒筛选器，包括：本体，位于本体两侧的进气管和出气管，进气管与出气管之间通过回旋腔和U形通道连通，回旋腔的底部设置有用于收集大颗粒尘埃的收集室；出风口组件内具有风机，风机启动时入风口组件的入风口吸取空气。依次卡接的入风口组件，水平段组件和出风口组件可分别拆卸，便于运输安装，颗粒筛选器将大颗粒物筛选掉，PM2.5细颗粒物随气体经颗粒物滤膜从而被颗粒物滤膜吸附。

Description

一种手持式颗粒物收集装置
技术领域
本发明涉及一种手持式颗粒物收集装置，属于环境监测技术领域。
背景技术
PM2.5细颗粒物是指环境空气中空气动力学当量直径小于等于2.5微米的颗粒物。它能较长时间悬浮于空气中，其在空气中含量浓度越高，就代表空气污染越严重。对空气中的PM2.5细颗粒物的量进行测量时，需要首先对PM2.5细颗粒物进行收集，收集的方法之一就是使空气通过颗粒物滤膜，气体分子能自由穿透颗粒物滤膜，而PM2.5细颗粒物则粘附在了颗粒物滤膜上，将颗粒物滤膜放置在β射线源上，通过测量β射线源的穿透率即可测量得到PM2.5细颗粒物的含量，现有技术中，PM2.5细颗粒物的收集通常是由固定的气象点进行采集，采集仪器庞大，非常不便捷，在家中以及野外难以使用。
发明内容
本发明要解决的技术问题是：为解决上述技术问题，提供一种便捷的手持式颗粒物收集装置。
本发明解决其技术问题所采用的技术方案是：
本发明提供一种手持式颗粒物收集装置，包括依次卡接在一起的入风口组件、水平段组件和出风口组件，以及设置在入风口组件入口处的颗粒筛选器；
水平段组件靠近入风口组件的一侧设置有颗粒物滤膜；
颗粒筛选器，包括：本体，位于本体两侧的进气管和出气管，进气管与出气管之间通过回旋腔和U形通道连通，U形通道包括与回旋腔顶部连通的第一竖直段、水平段、与出气管连通的第二竖直段，回旋腔的底部设置有用于收集大颗粒尘埃的收集室；
出风口组件内具有风机，按下开关可启动风机，从入风口组件的入风口吸取空气。
优选地，本发明的手持式颗粒物收集装置，回旋腔为纺锤形，包括沿着高度方向逐渐减小的锥形的顶部，柱形的中间部和沿着高度方向逐渐增大的锥形的底部。
优选地，本发明的手持式颗粒物收集装置，回旋腔锥形的顶部的内壁具有凸出的螺旋线以切割气流。
优选地，本发明的手持式颗粒物收集装置，收集室通过可拆卸连接方式与本体连接。
优选地，本发明的手持式颗粒物收集装置，入风口组件由入风口和波纹管组成，波纹管可弯曲折叠。
本发明的有益效果是：
本发明的手持式颗粒物收集装置，依次卡接的入风口组件，水平段组件和出风口组件可分别拆卸，便于运输安装，颗粒筛选器将大颗粒物筛选掉，PM2.5细颗粒物随气体经颗粒物滤膜从而被颗粒物滤膜吸附。
附图说明
图1是本发明实施例中手持式颗粒物收集装置的一种状态示意图；
图2是本发明实施例中手持式颗粒物收集装置的另一种状态示意图；
图3是本发明实施例中颗粒筛选器的纵剖视图。
附图标记为
1-入风口组件，2-水平段组件，3-出风口组件，4-颗粒物滤膜，11-波纹管，21-开关，41-本体，42-进气管，43-出气管，411-回旋腔，412-第一竖直段，413-水平段，414-第二竖直段，44-收集室。
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
实施例
本实施例提供一种手持式颗粒物收集装置，如图1和图2所示，包括依次卡接在一起的入风口组件1，水平段组件2和出风口组件3，依次卡接的入风口组件1，水平段组件2和出风口组件3可分别拆卸，便于运输安装；
水平段组件2靠近入风口组件1的一侧设置有颗粒物滤膜4(由颗粒物滤膜容纳腔容纳，将入风口组件1与水平段组件2分离后即可取出或者安装颗粒物滤膜4)，入风口组件1由入风口和波纹管11组成，波纹管11可弯曲折叠，以调整入风口的朝向；
颗粒筛选器，通过螺纹连接设置在入风口组件1的入口处，包括：本体41，位于本体41两侧的进气管42和出气管43，出气管43通常是进气管42孔径的5-8倍，已形成缓和的出气气流，进气管42与出气管43之间通过回旋腔411和U形通道连通，U形通道(用于缓冲气流)包括与回旋腔411顶部连通的第一竖直段412、水平段413、与出气管43连通的第二竖直段414，回旋腔411为纺锤形，包括沿着高度方向逐渐减小的锥形的顶部，柱形的中间部和沿着高度方向逐渐增大的锥形的底部，锥形的顶部的内壁具有凸出的螺旋线以切割气流，回旋腔411的底部设置有用于收集大颗粒尘埃的收集室44，收集室44通过螺纹及类似的可拆卸连接方式与本体41连接，以方便倒出收集室44内的尘埃；空气从进气管42进入后，到达回旋腔411，气流在回旋腔411中回旋，大颗粒尘埃就向下运动落入到收集室44内，使携带着PM2.5微粒的气流最终经U形通道从出气管43流出，并从入风口组件1经颗粒物滤膜4；进气管42靠近回旋腔411的一侧的管径小于远离回旋腔411的一侧的管径，从而使气流再通过进气管42时有个加速作用；
出风口组件3内具有风机，按下开关21可启动风机，入风口组件1的入风口吸取空气，经水平段组件2然后到出风口组件3的出风口流出，空气流经颗粒物滤膜后，被滤膜吸附。风机工作一段时间后，关闭风机，取下入风口组件1，取出颗粒物滤膜4，再通过其它仪器测量颗粒物滤膜4上的颗粒物含量，从而可计算出空气中颗粒物含量。
通常风机为定时工作的，比如工作一小时，6小时，12小时等，以实现等量收集的功能。
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (3)

1.一种手持式颗粒物收集装置，其特征在于，包括依次卡接在一起的入风口组件（1）、水平段组件（2）和出风口组件（3），以及设置在入风口组件（1）入口处的颗粒筛选器；
水平段组件（2）靠近入风口组件（1）的一侧设置有颗粒物滤膜（4）；
颗粒筛选器，包括：本体（41），位于本体（41）两侧的进气管（42）和出气管（43），进气管（42）与出气管（43）之间通过回旋腔（411）和U形通道连通，U形通道包括与回旋腔（411）顶部连通的第一竖直段（412）、水平段（413）、与出气管（43）连通的第二竖直段（414），回旋腔（411）的底部设置有用于收集大颗粒尘埃的收集室（44）；
出风口组件（3）内具有风机，按下开关（21）可启动风机，从入风口组件（1）的入风口吸取空气；
回旋腔（411）为纺锤形，包括沿着高度方向逐渐减小的锥形的顶部，柱形的中间部和沿着高度方向逐渐增大的锥形的底部；
回旋腔（411）锥形的顶部的内壁具有凸出的螺旋线以切割气流。
2.根据权利要求1所述的手持式颗粒物收集装置，其特征在于，收集室（44）通过可拆卸连接方式与本体（41）连接。
3.根据权利要求1或2所述的手持式颗粒物收集装置，其特征在于，入风口组件（1）由入风口和波纹管（11）组成，波纹管（11）可弯曲折叠。
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