APPARATUS FOR INJECTING VARIOUS LIQUID CHEMICALS FOR WATER PURIFYING PLANT AND WASTEWATER TREATMENT PLANT

PURPOSE: An apparatus for injecting various liquid chemicals for a water purifying plant and a wastewater treatment plant with one axis driving is provided to simply and easily supply chemicals in the quantity that is suitable to the turbidity variation of the water purifying plant and the waste water treatment plant by injecting liquid chemicals through the inlet after setting the height of a float connected to a valve by an axis using a handle depending on the injection amount of the chemicals. CONSTITUTION: The apparatus comprises chemical outlets (3a,3b,3c) formed at one side of each space areas (2a,2b,2c) of a chemical tank (1); a plurality of dippers (12) installed at a rotational shaft (7) so that chemicals of the space areas (2a,2b,2c) are flown into the chemical outlets (3a,3b,3c) using a one axis rotational shaft (7) installed by penetrating the upper part of the integral chemical tank (1), wherein 2 to 3 types of chemicals can be simultaneously injected using one integral chemical injection apparatus; a valve (13) having a float (24) installed by inserting a venturi tube into injection pipes (4a,4b,4c) which are installed at each of space areas (2a,2b,2c) of the chemical tank (1); and a handle axis (17) fixed to the upper part of the chemical tank (1) for controlling the position of the float (24).