Abstract: Disclosed is a vacuum pump assembly with an improved process by-product holding capacity, including a front bearing plate (1), an upper casing (2), a lower casing (3), a long rotor (4), a short rotor (5), and a rear bearing plate (6); the long rotor (4) and the short rotor (5) rotate about their respective rotary shafts in opposing directions, axes of the rotary shafts of the long rotor (4) and the short rotor (5) being set parallel to each other; the multiple stages of rotor elements of the long rotor (4) and the multiple stages of rotor elements of the short rotor (5) mesh with one another correspondingly; storage grooves (43, 54) are set on non-critical surfaces of rotor elements when meshing with one another. The disclosure improves process by-product holding capacity and effectively prevents pump jamming and wear caused by adhesion of the process by-product.

Abstract: A heatable air filter is disclosed. The air filter may be baffleless, and generally includes an outer frame and a filter assembly therein. The outer frame and the filter assembly are fixed together with a high-temperature sealant/adhesive. The filter assembly includes a filter medium, a heating element, and one or more card combs. The heating element receives electrical power or current through electrodes that pass through and extend externally from the outer frame. The heating element can heat the entire filter medium using electricity (e.g., through the electrodes), ensuring thorough and substantially complete deactivation of biological contaminants, dryness of the filter medium during use, and an improved service life.

Abstract: Disclosed herein are methods to make hydrogen titanium oxide (HxTiyOz) compositions. The nano-HxTiyOz can be used to remove pollutants and recover valuable materials. For example, the nano-HxTiyOz can be used to isolate lithium from various aqueous mixtures, such as brines, seawater, oil gas-produced water, and lithium battery waste solutions.

Abstract: A heatable air filter is disclosed. The air filter may be baffleless, and generally includes an outer frame and a filter assembly therein. The outer frame and the filter assembly are fixed together with a high-temperature sealant/adhesive. The filter assembly includes a filter medium, a heating element, and one or more card combs. The heating element receives electrical power or current through electrodes that pass through and extend externally from the outer frame. The heating element can heat the entire filter medium using electricity (e.g., through the electrodes), ensuring thorough and substantially complete deactivation of biological contaminants, dryness of the filter medium during use, and an improved service life.

Abstract: An air filter and air purification technology including a frame encompassing a filter channel and a filter medium across the filter channel. The air filter and air purification technology also include one or more electrical heating components, placed in the filter channel and configured to heat the filter medium and/or air in the filter channel. Thus, the air filter has a heating function, and can heat the filter medium and the air in the filter channel according to actual working conditions and/or operations, so as to prevent moisture in the air from affecting the filtering efficiency of the filter medium. The air filter and air purification technology have the characteristics of enhancing the filtering effects and improving the service life of the filter.