Cantilever grit classifier



The cantilever grit classifier ESPP type is installed on medium and big size treatments plants; it is generally installed downstream the grit removers in order to obtain a more efficient grit dewatering. Its use becomes exclusive when grit removers, DR type, from SERECO or similar types from the competitors are used for degritting.

The cantilever grit classifier is mainly composed of:a mobile frame provided with degritting blades which constitutes the rake and with a system of levers for the movement;a gearmotor group, including a camshaft and a suitable fixed support;a set of idle wheels necessary to obtain the correct machine motion;idle wheel rails fixed on the tank wall.

The machine is generally installed into a concrete tank with a proper slope, which allows the drainage of water from the extracted grit. On request, the tank can be made of steel and the machine is therefore supplied completely prefabricated. The water-grit mixture is first introduced into the channel through a pipe or a hopper, depending on the upstream grit remover machine. Once inside the tank, the grit carried by the incoming flow tends to settle at the bottom of the tank, while the water goes out the tank trough a weir placed in the opposite side of the tank. The collected grit are removed by the raking mechanism of the ESPP grit classifier. At the beginning of each cycle, the mobile frame moves forward by sweeping the grit; then it is lifted and placed in start position, where it is brought back down. At this point, a new cycle begins again. After a certain number of cycles, depending on the ESPP length, the grit reaches the discharge point. The raking movement of the ESPP type grit classifier is achieved by the combination of the rotating movement of the camshaft driven by the gear motor and the consequent motion of the levers and idle wheels. The equipment can be realized either in galvanized carbon steel or stainless steel.


massimo rendimento nella separazione sabbia-liquami

portate specifiche di acqua elevate

semplicità funzionale

minimo consumo energetico