Two-Spindle Screw Pump of Double-Flow Construction
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a twin screw pump of double-flow design with a pump housing, two bearing portions and at least one gear portion with at least one gear chamber, with feed screws with double-flow flanks arranged on two shafts, the feed screws on the shafts having a root diameter, the shafts being mounted in the bearing portions via bearings, a seal for sealing the bearing portion with respect to the conveying portion, with gearwheels arranged on the shafts in the gear portion, the shafts being rotatably coupled by means of said gearwheels, characterized in that on either side the inner diameter of the seal is greater than, or the same size as, the root diameter of the feed screws, and/or in that on either side the inner diameter of the bearing is greater than, or the same size as, the inner diameter of the seal.
-
Citations
12 Claims
-
1-5. -5. (canceled)
- 6. Twin screw pump of double-flow design with a pump housing, which has a pump portion, two bearing portions and at least one gear portion with at least one gear chamber, the bearing portions and the pump portion being formed separately from one another, with a conveyor housing part as a component of the pump portion, in which feed screws with double-flow flanks arranged on two shafts are provided, the feed screws on the shafts having a root diameter, the shafts being mounted in the bearing portions via bearings (external bearing), a seal for sealing the bearing portion with respect to the conveying portion being provided in the bearing portion, and the shafts extending at least on one side into the gear portion, with gearwheels arranged on the shafts in the gear portion, the shafts being rotatably coupled by means of said gearwheels, characterized in that on either side the inner diameter of the seal is greater than, or the same size as, the root diameter of the feed screws, and/or in that on either side the inner diameter of the bearing is greater than, or the same size as, the inner diameter of the seal.
Specification