160results about How to "Stable recycling" patented technology

Disclosed are: an adsorbent which enables highly efficient and excellently selective solid phase extraction of a solute with a wide range of chromatography polarity, including high-polarity solute molecules, while suppressing adsorption of impurities; and a solid phase extraction method. Specifically disclosed is a heterocyclic ring-containing copolymer adsorbent which is characterized by being composed of a copolymer that is formed from a multifunctional heterocyclic ring-containing monomer, which has a heterocyclic ring that contains at least two heteroatoms in the ring structure, and a monomer that is copolymerizable with the multifunctional heterocyclic ring-containing monomer. The heterocyclic ring-containing copolymer adsorbent is also characterized in that the main chain structure of the adsorbent is configured of the multifunctional heterocyclic ring. Also specifically disclosed is a solid phase extraction method which comprises a step wherein a solution, which contains low-polarity solute molecules, medium-polarity solute molecules or high-polarity solute molecules as a solute, is brought into contact with the heterocyclic ring-containing copolymer adsorbent so that one or more kinds of solutes are selectively adsorbed and held by the adsorbent.

The invention relates to a detachable four-pivot guiding connector used for distributing and collecting diving instruments, comprising a frame and cable-threading holes arranged in the middle of the frame. The detachable four-pivot guiding contact is characterized in that a hanging board is respectively arranged on two sides of the cable-threading holes on the frame, a pin-roll hole is arranged at an upper end of the hanging board, and front and back elastic stabilizers, including two front elastic stabilizer and two back elastic stabilizer, are respectively arranged at four corners of the lower part of the frame; an anti-cross-shaking buffer connecting base is respectively arranged on two sides of the disc-shaped frame, and a connecting pin-hole is respectively arranged at ends of the anti-cross-shaking buffer connecting base. With the invention, not only the hang of the guiding connector and diving instruments becomes so convenient but the support state is also stable; and the buffering capability is excellent with better anti-shaking and anti-swaying effect and higher distributing and collecting security in virtue of the elastic stabilizers and anti-cross-shaking buffers, so as to enhance the adaptability of the diving instruments to sea conditions. The detachable four-pivot guiding connector of the invention enhances the universality and available efficiency of distributing and collecting instruments so as to largely raise the voyage-sequence utilization efficiency of mother ships.

The water treatment system includes: an aluminate ion addition part for adding an aluminate ion additive to water to be treated containing at least salt content and silica; a first precipitation part provided on the downstream side of the aluminate ion addition part; a first pH adjustment part provided on the downstream side of the first precipitation part; a first solid / liquid separation part for separating the solid content in the water to be treated; a second pH adjustment part for adjusting the pH of the water to be treated from the first solid / liquid separation part to a second pH level; and a first separation membrane (desalination treatment) apparatus provided on the downstream side of the second pH adjustment part so as to separate the water to be treated into first permeated water and first non-permeated water by removing the salt content in the water to be treated.

The invention discloses an automatic placement and recovery device of a traffic cone. The automatic placement and recovery device comprises a matrix and a fixed plate. A first moving cavity is formedin the matrix. An intermittent push-out mechanism is arranged in the first moving cavity. A rotating cavity is arranged above the first moving cavity. A reciprocating rotating mechanism is arranged inthe rotating cavity. A second moving cavity with an opening being rightward is arranged above the rotating cavity. A placement and recovery mechanism is arranged in the second moving cavity. A firstrectangular groove is arranged on the left side of the rotating cavity. A second rectangular groove is arranged below the first rectangular groove. A transmission mechanism is arranged in the second rectangular groove. A first rotating shaft is rotationally mounted between the lower end wall of the first rectangular groove and the upper end wall of the second rectangular groove. The upper end of the first rotating shaft stretches into the first rectangular groove and is fixedly provided with a first conic gear. The lower end of the first rotating shaft stretches into the second rectangular groove and is fixedly provided with a second conic gear.