Cleaning system with balls, in particular for a heat exchanger of the plate type

A system comprising:

• an installation to be cleaned connected at the inlet to a fluid feed pipe fed with fluid and at the outlet to a fluid evacuation pipe,
• a device for cleaning the installation that is adapted to cause to flow in the installation cleaning bodies conveyed by the flowing fluid, the cleaning device including on the inlet pipe filter means for filtering the fluid and on the evacuation pipe separator means for collecting the cleaning bodies,
• characterized in that the separator means and the filter means are static and comprises separate filters, the separator means including a filter member provided with a filtering surface and that includes an inlet and an outlet, the cleaning device comprising an upstream recovery pipe connected to the inlet and a downstream reinjection pipe opening out in the feed pipe and that is connected to the outlet, the cleaning device also comprising a body surrounding the filter member, two pipes that are equipped with two controlled valves V2, V3 respectively being each connected to the surrounding body in order to respectively bring and evacuate fluid therefrom depending on the controlled valves actuation, when valve V2 is closed and valve V3 is opened the cleaning bodies circulating in the pipe are stopped by the filtering surface, whereas fluid conveying them passes through it in order to get out the filter member and is evacuated from the body by the pipe equipped with valve V3, when valve V2 is opened and valve V3 is closed fluid injected by the pipe equipped with valve V2 penetrates into the surrounding body, passes through the filtering surface in order to get into the filter member and drives the cleaning bodies in the reinjection pipe.