The present invention relates to a pump device with a first diaphragm pump head having two or an integral multiple of two fluid delivery chambers and diaphragms associated therewith, which are hydraulically coupled to a second diaphragm pump head. The second diaphragm pump head has two additional fl
The present invention relates to a pump device with a first diaphragm pump head having two or an integral multiple of two fluid delivery chambers and diaphragms associated therewith, which are hydraulically coupled to a second diaphragm pump head. The second diaphragm pump head has two additional fluid delivery chambers and additional membranes associated therewith, which are drivable by a double-acting piston via associated diaphragm control chambers, a refilling valve being connected in each case to the diaphragm control chambers and the diaphragm control chambers being temporarily impinged with a diaphragm control pressure, which is greater than atmospheric pressure, using the refilling valve. The piston may thus be activated using a relatively small force to achieve a delivery action.
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1. A pump device comprising: a first diaphragm pump head having two fluid delivery chambers and two diaphragm control chambers separated by two diaphragms associated therewith;a second diaphragm pump head for driving the first diaphragm pump head, the second pump head having two additional fluid del
1. A pump device comprising: a first diaphragm pump head having two fluid delivery chambers and two diaphragm control chambers separated by two diaphragms associated therewith;a second diaphragm pump head for driving the first diaphragm pump head, the second pump head having two additional fluid delivery chambers and two additional diaphragm control chambers separated by two associated additional diaphragms;wherein each of the two diaphragm control chambers are separately coupled to one of the two additional fluid delivery chambers to form two separate closed hydraulic couplings between the first diaphragm pump head and the second diaphragm pump head, the closed hydraulic couplings using control fluids which have water or oil;a double-acting piston situated in the second diaphragm pump head and defining a single piston head that simultaneously acts upon both of the two associated diaphragm control chambers to expand one of the two associated additional diaphragms while contracting the other of the two associated additional diaphragms, the expansion of one of the two associated additional diaphragms driving the control fluid from one of the two additional fluid delivery chambers into one of the two diaphragm control chambers via the closed hydraulic couplings to expand one of the two diaphragms and displace a volume in one of the fluid delivery chambers; anda refilling valve being connected to each of the diaphragm control chambers, and, using the refilling valves, the diaphragm control chambers being impinged temporarily, during a refilling procedure, which is controlled by a position of the two associated additional diaphragms, by a diaphragm control pressure, which approximately corresponds to a fluid pressure at an inlet of the fluid delivery chambers of the first diaphragm pump head. 2. The pump device according to claim 1, wherein the diaphragm control pressure approximately corresponds to a fluid pressure at the inlet of a fluid delivery chamber of the first diaphragm pump head. 3. The pump device according to claim 1, wherein the diaphragm control pressure can be adapted to the fluid pressure by a control circuit having associated sensors and actuators. 4. The pump device according to 1, wherein the diaphragm control pressure is generated by a pump, which is coupled to a container for a diaphragm control chamber, each container having one of the refilling valves and being impinged using a static stagnation pressure by the pump. 5. The pump device according to claim 1, wherein the diaphragm control pressure is generated by a controllable pump, which feeds a pressure accumulator, which is coupled to a container for a diaphragm control chamber. 6. The pump device according to claim 1, wherein a container is provided in each case for a diaphragm control chamber, and an adjustable throttle device is connected downstream from each container. 7. The pump device according to claim 1, wherein the piston is implemented as a double-acting disk piston having diametrically opposite piston rods of equal cross-sectional area. 8. The pump device according to claim 1, wherein the diaphragms of the first diaphragm pump head are each freely oscillating metal diaphragms. 9. The pump device according to claim 1, wherein the diaphragms of the second diaphragm pump head are made of a plastic. 10. The pump device according to claim 1, wherein the diaphragms of the second diaphragm pump head are each implemented as multilayered and are provided with a position controller and fracture signaling. 11. The pump device according to claim 1, wherein a conductivity or viscosity sensor is provided inside diaphragm control chambers of the first diaphragm pump head. 12. The pump device according to claim 9, wherein the plastic is PTFE. 13. The pump device according to claim 1, wherein the diaphragms are hydraulically driven. 14. The pump device according to claim 1, wherein the pump device delivers a viscose media having a high solid component at high pressures of greater than 200 bar. 15. The pump device according to claim 1, wherein the pump device delivers a viscose media having a high solid component at high temperatures of greater than 300° C. 16. A pump device comprising: a first diaphragm pump head having two fluid delivery chambers and two diaphragm control chambers separated by hydraulically driven diaphragms;a second diaphragm pump head which has two additional fluid delivery chambers and two additional diaphragm control chambers separated by two associated additional hydraulically driven diaphragms, wherein the two additional fluid delivery chambers of the second diaphragm pump head are hydraulically connected to the diaphragm control chambers of the first diaphragm pump head to form two separate closed hydraulic couplings;a double-acting piston situated in the second diaphragm pump headdefining a single piston head that simultaneously acts upon both of the two associated diaphragm control chambers to drive the two associated additional diaphragms and simultaneously drive the two diaphragms of the first diaphragm pump head via the closed hydraulic couplings between the two additional fluid delivery chambers and the two diaphragm control chambers; anda refilling valve being connected to each of the diaphragm control chambers, and, using the refilling valves, the diaphragm control chambers being impinged temporarily, during a refilling procedure, which is controlled by a position of the two associated additional diaphragms, by a diaphragm control pressure, which approximately corresponds to a fluid pressure at an inlet of the fluid delivery chambers of the first diaphragm pump head. 17. The pump device of claim 1, wherein the hydraulically driven diaphragms of the first diaphragm pump head are configured to oscillate freely. 18. The pump device of claim 16, wherein the hydraulically driven diaphragms of the first diaphragm pump head are configured to oscillate freely.
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이 특허에 인용된 특허 (5)
Siegel, Norbert, Diaphragm pump and device for controlling same.
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