41results about How to "Improve the quality of environmental protection" patented technology

The invention provides a needle base assembly rotating and retracting structure of a safety injector. The structure has the following beneficial effects: fastening grooves of the needle base assembly and fastening stops corresponding to a drum body to rotate from the limit and lock state to the non-limit and open state by virtue of automatic deflectors of a needle base assembly, so that a push rod can be rapidly embedded in the needle base assembly and positioned and presents the mode of retracting an injection needle so that the user can carry out the next retraction action, and the needle base assembly can be stably assembled and positioned at the opening end of the drum body and hardly causes the following unexpected phenomena due to the external temperature: the fastening degree between a needle base and the drum body is reduced due to temperature surge, thus causing inward retraction or leakage of the needle base in the injection process, or the needle base and the drum body are excessively fastened due to sudden temperature drop and the injection needle and the needle base can not be retracted into the drum body after injection; therefore the structure can be safely operated by the operator with one hand, improves the environment quality and achieves convenience in retraction use of the injection needle.

The invention relates to an alumina batch charging technique of aluminum electrolysis, in particular to a linear feeding method of an aluminum electrolysis fume purification system. The method of the invention comprises the following steps: 1) batch charging procedure; 2) boiling procedure and 3) batch charging adjustment procedures; the technical conditions are that: the wind pressure of compressed air led into an air chamber at the bottom of a material chamber is 300Pa to 500Pa; the gradient between a boiling bed and a discharge port is 5 degrees to 10 degrees; the adjusting distance of an adjusting plate is 10mm; and the negative pressure of an underground flue is not lower than 400Pa. The technique solves the problem that a fume purification batch charging device of the purification system relies on foreign imported equipment, improves the purifying efficiency of the aluminum electrolysis fume purification system, with the perfluoro purifying efficiency higher than 99 percent; reduces the discharge of pollutants and eliminates environmental pollution caused by the failure of a reactor in the prior art. The liner feeding method of the invention can be widely applied to the fumepurification systems in the aluminum electrolysis production industry.

The invention relates to a gas purification device for a domestic garbage flash mineralization processor. The processor includes a box body and a chimney. The box body is a closed rectangular box structure composed of an upper top plate, a side vertical plate and a bottom plate, wherein the upper top plate It is an upper arch, and a dome-shaped smoke holder is made in the center of the upper roof, and the gas mixing pipe of the chimney is fixed on the dome-shaped smoke holder. A gas purification device is fixed on the upper top plate of the side of the seat, and the total air inlet pipe and the total gas outlet pipe of the gas purification device are respectively communicated with the gas mixing pipe, and are fixed on the upper and lower gas mixing pipes of the gas mixing pipe cut-off gate. The present invention can strengthen the circulation of smoke and dust through the set external power, and can also carry out catalyst filtration, water filtration, purification agent filtration, activated carbon filtration and automatic prompting for replenishment and drainage, which greatly improves the purification level of the gas and ensures Environmental quality of the exhaust.