2results about How to "Fast water flow" patented technology

The application discloses a Bi2O2CO3 / MIL-68-NH2 composite material and a preparation method and application thereof, and belongs to the technical field of photocatalytic materials and the field of water environment treatment. The composite material is formed by loading Bi2O2CO3 on the surface of MIL-68-NH2 to form a heterojunction structure; the MIL-68-NH2 is a regular hexagonal rod-shaped crystal with a length of 10-20 microns; and the Bi2O2CO3 is a sphere with a diameter of 2-3 microns, and the surface is a carnation-shaped hierarchical stacking structure and is dispersed and loaded on the surface of the MIL-68-NH2. The composite material prepared by the application has the advantages of simple preparation method, strong visible light absorption capacity, stable catalytic performance, high degradation efficiency and the like, and has a potential application prospect in the field of water treatment.

This invention provides an ejector device for shellfish harvesting, belonging to the technical field of shellfish harvesting devices. It solves the technical problem of low shellfish suction efficiency in existing ejector devices. This jet device includes an inlet pipe and an outlet pipe, which are linearly and fixedly connected by an expansion pipe. A suction tube is fixedly connected to the side wall of the expansion pipe, with one end extending outside the expansion pipe and the other end inside the expansion pipe and extending towards the outlet pipe. A spiral plate is fixedly connected between the suction tube and the outlet pipe. Gas enters between the suction tube and the outlet pipe from the expansion pipe, where the flow velocity and pressure increase. The gas then passes through a spiral channel formed by the spiral plate, improving flow efficiency. After entering the outlet pipe at the end away from the horizontal pipe, the flow velocity slows down, and the pressure increases. The end of the suction tube inside the outlet pipe creates a vacuum, sucking up the mixture of mud, water, and shells, reducing damage to the shellfish and improving harvesting efficiency.