Sanding system for a rail vehicle

A sanding system for a rail vehicle, the sanding system comprising:

• a grit container containing grit;
• a conveying device connected to said grit container, wherein the grit passes from said grit container into said conveying device;
• and
• a feeding device connected to said conveying device, wherein the grit passes from said conveying device into said feeding device;
• said feeding device being configured to feed the grit in a targeted manner toward at least one of a rail vehicle wheel or a rail;
• said conveying device including a driven conveying worm configured to rotate about a longitudinal axis and conveying the grit from said grit container into a conveying chamber;
• an electric motor being a steplessly speed-controlled drive connected for driving said conveying worm, said electric motor to be controlled for controlling a rotational speed:
• to set, based on a predetermined grain size of the grit, a delivery amount of the grit by changing the rotational speed;
• to set a speed of rotation of said conveying worm depending on the grain size of the grit in order to discharge the grit uniformly and sparingly;
• and
• a compressed air injection device including a compressed air nozzle for introducing compressed air at a lateral region into said conveying chamber, said compressed air injection device being configured:
• in an active state of the conveying device, to transport the grit from said conveying chamber into said feeding device and,
• in an inactive state of the conveying device, to inject compressed air for at least one of cleaning or drying the feeding device.