3results about How to "Improved performance characteristics" patented technology

The present invention relates to a scroll compressor (1) with oil return for refrigerant-oil mixture, the scroll compressor (1) comprising a housing element (2) and a fixed scroll (3), wherein the housing element (2) is connected to the fixed scroll (3) by means of a seal (4) such that an outlet chamber (6) is formed between the housing element (2) and the fixed scroll (3), wherein, for oil separation and oil return purposes, an oil separation chamber (9) having a high-pressure refrigerant outlet (10) and an oil collection area (13) and an oil return passage (12) toward a suction pressure chamber (15) are arranged downstream of the outlet chamber (6), the scroll compressor being characterized in that an outlet chamber discharge member (11) for discharging oil into the oil return passage (12) of the oil separation chamber (9) is formed in the lower region of the outlet chamber (6) relative to the ground.

This application discloses a method for preparing high-purity electronic-grade titanium dioxide from ilmenite, belonging to the field of titanium dioxide preparation technology. The method includes steps such as raw material processing, concentrated sulfuric acid acidolysis, sedimentation and filtration, FeSO4 crystallization and separation, preparation of hydrated titanium dioxide, washing and bleaching of hydrated titanium dioxide, acidolysis of hydrated titanium dioxide, secondary hydrolysis, washing and filtration, and calcination. This method effectively removes various impurities such as iron, phosphorus, niobium, and zirconium through acidolysis, secondary hydrolysis, and multiple fine washing operations on the hydrated titanium dioxide intermediate. The resulting titanium dioxide product has a purity of over 99.9%, providing a new route for preparing high-purity electronic-grade titanium dioxide from ilmenite.

The utility model provides a kind of biscuit slitting forming roller device, belong to roller device technical field, the biscuit slitting forming roller device includes roller, roller is fixed by frame, bottom is provided with transmission shaft, transmission shaft bottom is provided with rolling shaft, rolling shaft is used to drive transmission shaft rotation, to drive roller rotation, roller includes: air hole roller includes hollow roller main body, a plurality of scalable air needle, spring mechanism, adjusting disc and adjusting screw, air needle is connected with adjusting disc inside roller main body by spring mechanism, adjusting disc can be rotated by external adjusting screw, with the rotation of adjusting disc, air needle is extended or retracted roller main body surface under the action of spring;Slitting forming roller includes two nested rollers inside and outside, and the surface of inner roller is provided with basic slitting edge, and the outer roller is rotatable adjusting ring, solve the problem that traditional biscuit slitting forming roller device is not uniform due to adhesion and low production efficiency.