3results about How to "Control water level" patented technology

The invention discloses a modular horizontal subsurface wetland capable of being flexibly adjusted and a regulation and control method, and belongs to the field of municipal drainage. The modular horizontal subsurface flow wetland capable of being flexibly adjusted comprises an integrated wetland, the integrated wetland is composed of a first gravel area, wetland plants, a second gravel area, medium-coarse sand and broken stones, the first gravel area is located on one side of the broken stones, the second gravel area is located on the other side of the broken stones, and the first gravel area is located on one side of the medium-coarse sand. And the wetland plants are positioned at the upper ends of the broken stones. The device solves the problems that when wastewater is treated by an existing traditional method, the device cannot be adjusted and switched between an aerobic mode and an anaerobic mode, and the whole structure cannot adjust the tail water flow track according to the mode switching, after the liquid flow track is adjusted through a first manual gate valve, the liquid flow track is adjusted through an electronic valve, and the tail water flow track is adjusted through a second manual gate valve. And the tail water flows into the first gravel area at different positions and is discharged from the position of the second water pipe in the second gravel area after being in contact with the gravel.

The utility model relates to a rotational flow sedimentation tank and belongs to the technical field of water treatment facilities. The inner cylinder comprises the first arc-shaped side wall and the second arc-shaped side wall, the adjusting water tank and the inner cylinder share the second arc-shaped side wall, the first arc-shaped side wall serves as the shared side wall of the outer cylinder and the inner cylinder, the occupied area and the construction amount can be reduced, and the whole outer cylinder is not of a traditional large cylinder structure any more; the two arc-shaped side walls are different in circle center axis, are approximately oval, and can be suitable for the situation that the space of a construction site is limited. Besides, through the combined design of the gate valve and the annular overflow port, the water level of the water tank and the water level of the inner cylinder can be conveniently controlled and adjusted, and the normal process production requirements of the rotational flow sedimentation tank are met.

This application relates to the technical field of unmanned surface vessels (USVs), and in particular to a semi-submersible USV, comprising a hull, ballast assembly, and control assembly. The hull includes a base and a canopy, with the canopy fixedly connected to the top of the base. An underwater propulsion unit is mounted at the stern of the base, and a submersible propulsion unit is mounted at the stern of the canopy. The ballast assembly includes a ballast tank and a pumping unit. The ballast tank is mounted on the base, and one end of the pumping unit communicates with the ballast tank, while the other end communicates with the bottom of the base. The control assembly includes a battery, a control unit, and a communication unit. The battery and control unit are mounted inside the base, and the communication unit is fixedly connected to the top of the canopy. The battery and control unit are electrically connected, and the control unit and communication unit are also electrically connected. In calm sea conditions, the hull floats, and the submersible propulsion unit drives the hull, significantly reducing drag during movement. This application effectively reduces energy consumption during navigation.