38results about How to "Reduce the frequency of filter replacement" patented technology

The invention relates to the technical field of gas preparation, in particular to a pressure swing adsorption nitrogen production system and a nitrogen production method thereof, including an air compressor, a compressed air filter assembly, a buffer gas storage tank, an adsorption tower group, a nitrogen tank, connecting pipelines and The valve group is characterized in that: the air compressor, the compressed air filter assembly, the buffer gas storage tank, the adsorption tower group, and the nitrogen tank are sequentially connected through the connecting pipeline, the valve group is arranged on the connecting pipeline, and the air compressor The input end of the machine is provided with an air intake filter device, which is used for the air intake filter of the air compressor, which provides a filter and impurity removal for the initial effect of the air intake of the air compressor during the preparation of nitrogen, reducing the need for later The frequency of replacing the filter element of the filter equipment reduces the production cost, reduces the impurity removal pressure of the later filter equipment, and ensures the filtration effect of the later filter equipment. The pressure swing adsorption nitrogen production system and its nitrogen production method.

The invention belongs to the field of non-woven material preparation, and relates to a high-efficiency filter element of water purification equipment and a preparation method thereof. The invention uses solid powder modified particles to modify the melt-blown fiber web twice, and the first modification applies The solid powder modified particles are mainly distributed on the surface of the melt-blown fiber web, and the solid powder modified particles applied for the second modification are mainly distributed in the middle of the melt-blown fiber web. Both the surface and the inner core of the blown fiber web have a suitable content of solid modified particles. In the first modification process, the surface of the melt blown fiber web still retains a certain degree of adhesion and adhesion, and then with the help of a strong solid The fluidized bed spraying device with powder spraying ability can improve the adhesion firmness of solid powder modified particles and fibers, and the solid powder modified particles are not easy to fall off, reducing the frequency of replacing filter elements and reducing the cost of water purification equipment.

The invention discloses a double-layer filter screen convenient to connect. The double-layer filter screen convenient to connect comprises an upper framework, a filter screen and a lower framework. The filter screen is arranged between the upper framework and the lower framework. The lower framework comprises a disc, a first annular sleeve and a second annular sleeve, wherein the first annular sleeve and the second annular sleeve are arranged at the two ends of the disc respectively, a connecting thread is arranged on the inner wall of the first annular sleeve, a plurality of round holes are formed in the surface of the disc, first-layer filter screens are arranged in the round holes respectively, and an annular groove is formed in the end face of the second annular sleeve. An annular protruding strip corresponding to the annular groove is arranged on the end face of one end of the upper framework, and a connecting thread is arranged on the outer wall of the other end of the upper framework. In this way, according to the double-layer filter screen convenient to connect, the filter screens can be conveniently replaced, and the filter screens and external connecting pipelines can be conveniently disassembled or assembled; meanwhile, the service life of the filter screens or the filter time of the filter screens is prolonged, the filter screen replacement frequency is reduced, and the life cycle of equipment is prolonged.

The invention provides a kitchen garbage can and relates to the field of garbage cans. The kitchen garbage can comprises a can body and a can cover, two vertical rods are fixedly installed on the circumferential surface of the can body, fixing wheels are fixedly installed at the upper ends of the two vertical rods, the two fixing wheels are fixedly connected through a fixing shaft, two thick oil cylinders are fixedly installed on the upper surface of the can cover, and connecting rods are fixedly installed at the right ends of the two thick oil cylinders. The ends, away from the thick oil cylinders, of the two connecting rods are hinged to the faces, away from each other, of the two fixing wheels correspondingly, arc-shaped blocks are fixedly installed at the output ends of the two thick oil cylinders correspondingly, the two arc-shaped blocks make contact with the circumferential faces of the two fixing wheels correspondingly, and a fixing ring A is arranged below the can cover. According to the kitchen garbage can, swill and liquid garbage are poured into the can body, the effect of treating a large amount of swill is achieved, and the problem that in the prior art, a water tank is blocked due to the fact that swill garbage is directly poured into the water tank is solved.