| 摘要 |
A device (200) for processing of a liquid comprises a device-input (202) for receiving the liquid to be processed at an input-pressure (p1), a device-output (216) for returning the processed liquid at an output-pressure (p4), and a process chamber (209) with a chamber-inlet (208) and a chamber-outlet (210), the chamber-inlet (208) being connected to the device-input (202) via a feed-line (203, 207), and the chamber-outlet (210) being connected to the device-output (216) via a discharge-line (211, 215). The feed-line (203, 207) comprises pump means for increasing the pressure of the liquid from the input-pressure (p1) to a feed-pressure (p2) at the chamber-inlet (208), and the discharge-line (211, 215) comprises back-pressure means adapted to maintain a discharge-pressure (p3) at the chamber-outlet (210) upstream of the back-pressure means at an excess-pressure (pe) above the output-pressure (p4), and to reduce the pressure of the liquid from the discharge-pressure (p3) to the output-pressure (p4) downstream of the back-pressure means. The pump means in the feed-line (203, 207) comprises a first stage (205) of a multiple-stage gear pump (222), and the backpressure means in the discharge-line (211, 215) comprises a second stage (213) of the multiple-stage gear pump (222), wherein the second stage is mechanically coupled to the first stage (205). |
