Water quality detection device

The invention discloses a water quality detection device. The device comprises a main body. The surface of the main body is provided with a limiting groove. A protection cover passes through and is fixed in an internal portion of the limiting groove through a cross bar. The surface of the protection cover is fixed with a plurality of antiskid blocks. One end portion of the protection cover is fixed with a limiting block. An end portion of the limiting block is tightly contacted with an inner wall end portion of the limiting groove. The other end of the protection cover is provided with a groove. A bottom end of the protection cover is provided with a slide block. Through the designed slide block, a limiting spring and the limiting block, the protection cover is compressed under the effectof the limiting spring, and the limiting block for limiting is separated from the limiting groove. Through a designed slide groove and a clamp block, the protection cover and the slide block are limited based on a slidable co