FIELD: manufacture of paper and in other fields. SUBSTANCE: the suspension feed pump has a means for gas separation, pressure wheel with a boss, pressure blades in the front section of the pressure chamber, pressure blades in the rear section of the pressure chamber and a ring-shaped partition joined to the boss between these members. The boss has an external part, which passes mainly in the radial direction outside in the rear section. The ring-shaped partition is located at a certain distance before the boss external part. The partition inside diameter is less than the outside diameter of the boss external part so that this partition and the boss external part at least partially overlap each other. Ducts pass from the internal part to the external area of the rear section of the pressure chamber, the ducts have a section passing mainly in the radial direction between the rear side of the partition and the front side of the boss external part. EFFECT: enhanced efficiency of feed of pulp suspension having a relatively high concentration. 9 cl, 7 dwg
