7results about How to "Reduce recycling" patented technology

A ventilation cap of a gearbox relates to the technical field of gearboxes and comprises a plug body and a filter screen, an air inlet hole, a first condensation oil cavity, a second condensation oil cavity and an exhaust hole are formed in the plug body, and the air inlet hole, the first condensation oil cavity, the second condensation oil cavity and the exhaust hole are communicated in sequence; the filter screen is installed in the air inlet hole and used for filtering oil liquid in the oil-gas mixture entering the first condensation oil cavity from the air inlet hole. The oil-gas separation effect can be improved while the size is reduced, the oil recovery amount is increased, the operation cost is reduced, and disassembly and assembly in a limited space environment are facilitated.

The invention provides a method for preparing a sodium-ion battery hard carbon negative electrode with a high cross-linked structure based on cooperative cross-linking of hydroxyl enriched lignin and oxidized asphalt, and belongs to the technical field of preparation of sodium-ion battery negative electrode materials. The high-performance hard carbon negative electrode can be prepared without a solvent and an additional additive by optimizing a lignin pretreatment process and an asphalt pre-oxidation process and improving an asphalt-lignin cross-linking mode; by adopting the biomass derivative and petroleum asphalt composite carbon source, the method has the advantages of low cost, environmental protection and accessible raw materials; the sodium ion battery with the obtained hard carbon negative electrode has excellent electrochemical performance and is suitable for large-scale production of the sodium ion battery; and the practicability is high.

The application belongs to the field of cellulose ethers, and embodiments provide a sodium carboxymethyl cellulose and a preparation method and a dust suppressant thereof. The method comprises the following steps: mixing cellulose, a solid base and a solid etherifying agent to obtain a first mixture; adjusting the humidity of the first mixture by using a humidity adjusting medium to obtain a flowable wet powder body; mechanically activating the wet powder body to obtain a second mixture; performing a heating treatment on the second mixture to cause the second mixture to undergo an alkalization reaction and an etherification reaction; performing a neutralization treatment on the obtained heating treatment product to obtain a neutral mixture; and sequentially performing a dissolution treatment and a purification treatment on the neutral mixture to obtain the sodium carboxymethyl cellulose. The method of the embodiments of the application does not require a large amount of organic solvents such as isopropyl alcohol, thereby reducing the generation of waste liquid and significantly reducing the environmental disposal cost and production safety risk.

The utility model discloses an inorganic fireproof expansion sealing element which comprises an expansion body carrier and an expansion body material layer, the expansion body material layer is arranged on the outer surface of the expansion body carrier or arranged on the periphery of the expansion body carrier, and the expansion body carrier is an inorganic plate. The inorganic fireproof expansion sealing element adopting the structure is high in strength and free of corrosion and volatilization, the cost of a traditional organic flexible solvent is reduced on the basis of ensuring the fireproof expansion performance, the recovery treatment of waste materials of a traditional flexible fireproof expansion sealing element is reduced, and the production cost is reduced. The process of fixing and combining the flexible fireproof expansion sealing piece and the inorganic filler is omitted, and the fireproof performance is improved.

The utility model discloses a water -saving photovoltaic module intelligence cleaning device, including the cleaning machine case, the inside of cleaning machine case is provided with water tank and cabin respectively, the inside of cabin is installed with first water pump and second water pump respectively, the water injection opening of second water pump is connected with water injection rod through pipeline, the water outlet of water injection rod is installed with the cleaning disc, the surface of water injection rod is fixed with the connecting assembly, the utility model discloses the recovery box, the water collecting plate, the connecting assembly and first water pump through the design, through the water washing cleaning of the wastewater that the photovoltaic module surface that is in the inclination installation generates along the inclination surface and flows, in the process of flowing, through the water collecting plate and concentrate collection, concentrate the wastewater and flow into the recovery box, first water pump work will be in the wastewater in the recovery box and send to the water cabin, realize water circulation use, reach water -saving effect.

The application discloses a kind of surface hydrophobicity coated heavy medium flotation equipment and process, belong to mineral processing technical field.The flotation equipment includes flotation tank (7) and concentrate port (7), the inner bottom surface of flotation tank (7) is inclined surface, and inclines to concentrate port (10) place.Process includes: S1, grinding obtains raw ore pulp;S2, surface coated rubber's heavy medium (11) and raw ore pulp are given to flotation equipment according to proportion;S3, strong stirring and in addition kerosene, 2# oil is stirred again, aerofloat obtains concentrate and tailings;S4, weak magnetic separation, separates heavy medium particle.This process is simple and easy to operate, equipment is simple, moving parts are few, work is stable, energy consumption is low, the existing flotation machine is simply transformed to creatively combine heavy medium beneficiation and flotation together, realizes that the specific gravity is higher, and the heavy suspension liquid that internal heavy medium distribution is more uniform;And heavy quality is recovered well, loss is very little in beneficiation process, with development application prospect.

The invention discloses an environment-friendly long-acting antifouling paint and a preparation method thereof, and belongs to the technical field of paint materials and antifouling. The environment-friendly long-acting antifouling paint comprises the following components in parts by weight: 30-50 parts of a component A, 25-45 parts of a component B, 8-25 parts of a functional body, 1-5 parts of color paste and 0.3-3 parts of an auxiliary agent, the component A is an aliphatic isocyanate prepolymer which is prepared from aliphatic isocyanate and castor oil through a reaction, and the specific preparation raw materials comprise the following components in parts by weight: 20-40 parts of aliphatic isocyanate and 10-20 parts of castor oil; the component B is polyaspartic acid ester, and the molecular weight of the polyaspartic acid ester is 800-1500 g / mol; the castor oil has good reaction activity with aliphatic isocyanate, can significantly improve the flexibility of a prepolymer (polyurea precursor) and the cohesiveness with a base material, and can optimize the compatibility of the polyurea precursor with polyaspartic acid ester with the molecular weight of 800-1500 g / mol, thereby improving the mechanical stability and weather resistance of the whole polyurea paint coating. The technical problem that an existing coating material cannot give consideration to synergistic improvement of environmental protection property and mechanical property is solved.