| 摘要 |
A mixing valve (1) has a housing (3), defining a circular-cylindrical chamber (4) with several ports (10) arranged around the circumference of a cylinder casing (5), and with a first end wall (7) perpendicular to a cylinder axis (6) and an opposite second end wall (8) perpendicular to the cylinder axis (6). Inside the chamber (4) a turning slide (11) is rotatingly mounted by means of at least one O-ring (17, 18) arranged on an operating spindle (16), and by means of a circular seating (20) for an O-ring (21), which makes a tight seal with the inside of the cylinder casing (5). By both the operating spindle (16) and the seating (20) being radially displaced in a direction away from a casing wall (14) of the turning slide (11), which casing wall (14) is arranged to close at least partially one or two of the ports (10) depending upon the rotational position of the turning slide (11), the O-rings (21) are compressed when the casing wall (14) makes contact with the inside of the cylinder casing (5) and the casing wall (14) is thus pressed against the inside of the cylinder casing to make a tight seal with this. |
