Grinding device

A grinding device for grinding a grinding material, the grinding device comprising:

• at least two grinding elements that are movable relative to one another, wherein the at least two grinding elements together form at least one grinding portion in which the grinding material is grindable by the at least two grinding elements;
• and
• at least one contact pressure device including at least one hydraulic cylinder including a cylinder operating chamber, and at least one gas spring including a spring operating chamber, wherein the cylinder operating chamber and the spring operating chamber are flow connected with one another,
• wherein a contact force is impartible upon at least one of the at least two grinding elements by the at least one contact pressure device and the at least two grinding elements are pressable onto one another by the contact force,
• wherein a smallest flowable cross-sectional surface between the cylinder operating chamber and the spring operating chamber amounts to at least 10% of a cross-sectional surface of the cylinder operating chamber, or
• wherein a connecting section extending between a first transitional cross-section of a connecting component communicating with the cylinder operating chamber and a second transitional cross-section of the connecting component communicating with the spring operating chamber has a maximum length of 100 cm;
• the grinding device further comprising a damping device through which a flow velocity of a hydraulic fluid flowing between the cylinder operating chamber and the spring operating chamber is reducible,
• wherein a degree of damping of the damping device differs advantageously for different flow directions of the hydraulic fluid, and
• wherein the degree of damping for a flow of the hydraulic fluid into a direction oriented away from a piston of the hydraulic cylinder is advantageously greater than for a flow of the hydraulic fluid in a direction oriented towards the piston of the hydraulic cylinder.