| 摘要 |
In a pump arrangement, each adjusting screw has first and second end portions, a third intermediate raised portion, and a fourth portion to allow each adjusting screw to be rotated clockwise/counterclockwise. Each first end portion passes through a suction liner aperture so left-handed threads couple to a respective left-handed seal ring aperture. Each second portion passes through a suction half casing aperture so the fourth portion can be accessed to allow clockwise/counterclockwise rotation of each adjusting screw. Each adjusting screw rotates clockwise and moves until the third portion pushes against the suction half casing, so the screw stops moving and the seal ring moves away from the suction liner as the screw is rotated clockwise, or rotates counterclockwise and moves until the third portion pushes against the suction liner, so the screw stops moving and the seal ring moves towards the suction liner as the screw is rotated counterclockwise. |
| 主权项 |
1. Apparatus for adjusting a seal member in relation to an impeller in a pump arrangement comprising:
the seal member configured with at least two threaded apertures; a second pump member; a third pump member configured between the seal member and the second member; and at least two adjusting screws, each adjusting screw having a first end portion, a second end portion, a third intermediate raised portion between the first end portion and the second end portion, and a fourth portion configured to allow each adjusting screw to be rotated, each first end portion configured to pass through a respective aperture in the third member and configured with corresponding threads that couple to a respective threaded aperture of the seal member, each second portion configured to pass through a respective aperture of the second member to allow the fourth portion to be accessed to allow each adjusting screw to be rotated, and in order to adjust the seal member in relation to the impeller in a first axial direction, each adjusting screw configured to be rotated in a first rotational direction and moved in the first axial direction until the third intermediate raised portion pushes against one of the second member or the third member, causing the adjusting screw to stop moving in the first axial direction, and the seal member to move in a second axial direction that is opposite to the first axial direction in relation to the impeller as the adjusting screw continues to be rotated in the first rotational direction, or in order to adjust the seal member in relation to the impeller in the second axial direction, each adjusting screw configured to be rotated in a second rotational direction that is opposite the first rotational direction and moved in the second axial direction until the third intermediate raised portion of the adjusting screw pushes against the other of the second member or the third member, causing the adjusting screw to stop moving in the second axial direction, and the seal member to move in the first axial direction in relation to the impeller as the adjusting screw continues to be rotated in the second rotational direction. |
