Surface water sampling device

The utility model relates to a surface water sampling device which comprises a fixing sleeve and a one-way pipe, the one-way pipe is communicated with the fixing sleeve, a one-way mechanism and a filtering mechanism are arranged on the one-way pipe, the one-way mechanism comprises a plurality of circumferential plates, a guide sleeve, a guide rod, a spring, a sealing plate and a one-way plate, a plurality of circumferential plates are respectively mounted on the inner wall of the one-way pipe, guide sleeves are mounted on the circumferential plates, a one-way mechanism is designed, during sampling, a spring is pushed through atmospheric pressure, so that surface water is sucked into a collecting barrel, and when the external atmospheric pressure is the same as the internal atmospheric pressure, the spring can drive the one-way plate to rebound. 本实用新型涉及一种地表水取样装置，包括固定套和单向管，单向管连通在固定套上，单向管上设置有单向机构和过滤机构，所述单向机构包括周向板、导向套、导向杆、弹簧、密封板和单向板，所述周向板设置有多个，多个所述周向板分别安装在单向管的内壁上，周向板上安装有导向套，单向机构设计，在进行取样时，通过大气压将弹簧推动，从而将地表水吸入到收集桶中，