2results about How to "Fix scratches" patented technology

This utility model discloses a dynamic pressure balanced three-screw pump rotor assembly and a three-screw pump, belonging to the field of screw pump technology. It includes a driving screw and two driven screws meshing on both sides of the driving screw. A first oil return channel connecting a high-pressure chamber and a low-pressure chamber is axially arranged within the driving screw. An oil return valve connected to the first oil return channel is provided on the driving screw located on the low-pressure chamber side. A second oil return channel connecting the high-pressure chamber and the low-pressure chamber is axially arranged within the driven screws. A support member is provided at the end of the driven screw located on the low-pressure chamber side. The support member includes a base plate at the end of the driven screw and a plug-in post on the upper surface of the base plate. The plug-in post is inserted into the second oil return channel. A thrust buckle is provided at the upper end of the driven screw. This utility model solves the scraping problem caused by axial movement of the driven screw, improves the reliability of the pump unit, reduces unit vibration and noise, and is suitable for three-screw pumps with high vibration and noise reduction requirements.

The utility model belongs to the technical field of plate processing, and discloses a plate offline transition roller table, which comprises a mounting rack, a plurality of first optical shafts, a plurality of second optical shafts, a plurality of rollers and a plurality of spacing cylinders, the plurality of first optical shafts are arranged side by side at intervals along the conveying direction, and the first optical shafts are rotatably mounted on the mounting rack; the multiple second optical shafts are arranged side by side at intervals in the conveying direction, the second optical shafts are rotationally installed on the installation frame, and the second optical shafts and the first optical shafts are arranged in a staggered mode; the plurality of rollers are rotationally mounted on the first optical axis and the second optical axis in sequence in the length directions of the first optical axis and the second optical axis; the spacing cylinders are arranged on the first polished shafts and the second polished shafts in a sleeving mode and located between the adjacent rolling wheels. The friction force between the plate and the transition platform can be reduced, the bottom surface of the plate is prevented from being scratched, and the production continuity and the quality of the plate are ensured.