CHECK VALVE AND PISTON PUMP HAVING CHECK VALVE

摘要

The invention relates to a check valve (10) to be disposed between a first pressure chamber (14), in which a first pressure (Pi) of a fluid (30) prevails, and a second pressure chamber (16), in which a second pressure (P2) prevails, having a valve housing (12), on which a valve seat (18) is implemented, and having a blocking element (22), which is designed in a blocking position for the purpose of closing a valve opening (19) in the area of the valve seat (18), in order to block the connection between the first and the second valve chambers (14, 16) if the second pressure (P2) is greater than the first pressure (Pi), and is designed in an open position for the purpose of releasing the valve opening (19), in order to release the connection between the first and the second valve chambers (14, 16) if the first pressure (Pi) is greater than the second pressure (P2), wherein said fluid (30) can flow in the open position along a flow direction (S) from said first pressure chamber (14) into said second pressure chamber (16). Furthermore, the valve seat (18) is implemented as an inclined face, which is oriented at an angle (a) greater than 15° and less than 80° in relation to the flow direction (S), wherein said blocking element (22) has a planar blocking lobe (24) made of a material which can be elastically deformed, which presses against the inclined face in the blocking position and lifts off of the inclined face in the open position because of the difference between the first pressure (Pi) and the second pressure (P2), in order to release the connection.