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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