PROMINENT DOSIERTECHNIK GMBH Patent applications |
Patent application number | Title | Published |
20140147292 | Membrane Pump and Method for Adjusting Same - The present invention concerns a pump adjusting method and a membrane pump having a pumping chamber, a pressure and a suction connection, wherein the pressure and the suction connections are connected to the pumping chamber, a hydraulic chamber, wherein the pumping chamber and hydraulic chamber are separated from each other by a membrane, wherein a pulsating working fluid pressure can be applied to the hydraulic chamber which can be filled with a working fluid, wherein the membrane is moved between a first and second chamber positions of different volumes, wherein the chamber is connected to a working fluid reservoir, wherein the membrane comprises exchangeable spring elements exerting different forces on the membrane. The force which is exerted by the spring element on the membrane in the direction of the second position can be adjusted. | 05-29-2014 |
20130209280 | Membrane Pump Having an Inertially Controlled Leakage Compensation Valve - The present invention concerns a membrane pump having a hydraulic chamber ( | 08-15-2013 |
20120168005 | PRESSURE RETENTION VALVE - A pressure retention valve including a housing having an inlet passage and an outlet passage that can be connected together and a separating diaphragm subdividing the housing into two portions, wherein, in operation of the valve, a first portion conveys fluid and a second portion is fluid-free. The valve further includes a valve seat defining an end of the inlet passage, arranged in the fluid-conveying portion of the housing, and has a first sealing surface, a shut-off body which is arranged movably in the fluid-conveying portion of the housing and has a second sealing surface, and a spring element having a spring force, which is arranged in the fluid-free portion of the pressure retention valve. The spring element is so arranged that its spring force prestresses the second sealing surface in the direction towards the first sealing surface so that in a position of the shut-off body that closes the valve the sealing surfaces are in engagement with each other and the shut-off body separates the inlet passage from the outlet passage. The inlet passage is so arranged that a fluid flowing in through the inlet passage in operation of the valve is applied to the shut-off body in such a way that the fluid exerts on the shut-off body a force which acts in opposition to the spring force of the spring element. The shut-off body has a guide portion which extends into the inlet passage, and the inlet passage is portion-wise of such a design configuration that it forms a guide bush in which the guide portion of the shut-off body is guidedly received. | 07-05-2012 |
20120100022 | DIAPHRAGM MACHINE - The present invention concerns a multi-cylinder diaphragm machine having at least two hydraulically driven diaphragms includes: a drive unit for producing at least two pulsating hydraulic fluid flows for driving the diaphragms and a delivery unit for delivering a delivery medium and having at least two pump chambers, the volumes of which can be varied by the movement of a respective diaphragm, wherein each delivery chamber is connected by way of a pressure valve to a pressure line and by way of a suction valve to a suction line. To provide a multi-cylinder diaphragm machine which avoids or at least alleviates the specified disadvantages and which is extremely compact and thus saves on space and material, has a high energy efficiency and a high degree of flexibility in adaptation to the conditions at the installation location and with which it is at the same time ensured that mounting and dismantling of the individual diaphragms and valves are easily possible, in accordance with the invention it is proposed that the delivery unit includes a diaphragm body in which the pressure and suction lines are arranged and at least two hydraulic bodies, wherein each hydraulic body is connected to the drive unit, wherein formed between each hydraulic body and the diaphragm body is a cavity in which one of the diaphragms is arranged so that by production of the pulsating hydraulic fluid flows the diaphragms are moved within the cavities and a delivery medium is periodically transferred from the suction line into the pressure line. | 04-26-2012 |
20120097025 | DRIVE DEVICE FOR OSCILLATING POSITIVE-DISPLACEMENT MACHINES - The present invention concerns a drive mechanism for oscillating positive-displacement machines such as for example diaphragm pumps comprising an eccentric shaft and a plurality m of piston rods, wherein the piston rods are connected to the eccentric shaft in such a way that rotation of the eccentric shaft produces an oscillating linear movement of the piston rods. To provide a corresponding drive mechanism which avoids or at least reduces the described disadvantages it is proposed according to the invention that the eccentric shaft and the piston rod are connected together by way of a sliding unit guide. | 04-26-2012 |