DIAPHRAGM PUMP Russian patent published in 1998 - IPC

FIELD: oil industry. SUBSTANCE: diaphragm pump has cylindrical housing 1, sleeve 2 disposed in housing 1 and embraced at end sides by hollow disks 3 and 4, each having slots, with number of slots being equal to number of diaphragms 5. Diaphragms 5 are made in the form of sector-shaped balloons with ends continued by thickened dovetail-shaped flange portions "a" and pressed through these portions by disks 3 and 4 to feeding disks 6 and discharge disks 7. Balloons are positioned within thin-wall flexible enclosures 8. Support bearings 9 and 10 are mounted in feeding and deflecting disks and carry drive shaft 11 with eccentrics provided with longitudinal slots engageable with similar slots of eccentric sleeve 12. Pressing bearings 13 are seated onto sleeve 12 and cooperate with cylindrical ejector 14. Cylindrical housing 1 is connected with feeding head 15 and discharge head 16. Suction valves 18 are secured in feeding head 15 by means of wedges 17. Delivery valves 20 are fixed in discharge disk 7 by means of wedges 19. Parts positioned in housing 1 are provided with channels connected with diaphragm cavities and closed by suction and delivery valves. Seat 21 of delivery valve 20 is fixed by stud 22. Pump is connected with immersion engine 23. EFFECT: increased efficiency by higher pump pressure and variable output. 2 cl, 8 dwg