3results about How to "Improve sand removal effect" patented technology

This utility model discloses a comprehensive water conveyance and sediment discharge structure for a water conservancy project, including a water conveyance channel and a control gate; a sediment discharge vortex pipe with one end extending out of the water conveyance channel is obliquely embedded on the bottom wall surface of the water conveyance channel, and a strip-shaped sediment discharge port with a low front edge and a high rear edge is opened on the upper surface of the sediment discharge vortex pipe located inside the water conveyance channel; a sediment discharge pool is connected to one side of the water conveyance channel behind the sediment discharge vortex pipe, and the sediment discharge pool is composed of a sunken base and a water intake side wall surrounding the outer perimeter of the base. The base has a conical funnel structure, and its upper edge is flush with the bottom wall of the water conveyance channel. The water intake side wall has a sloping structure, and its bottom slope is connected to the upper edge of the base; a sediment discharge bottom hole is provided at the center of the base, and a sediment discharge gallery is connected to the sediment discharge bottom hole. A flow regulating pier wall is provided on the side wall of the water conveyance channel opposite to the sediment discharge pool. The advantage of this invention is that it forms a multi-stage sand removal structure from front to back, which greatly improves the sand removal effect and efficiency, and ensures that the water quality flowing out of the water conveyance channel meets the standards.

The application discloses a kind of based on self-vibration effect's breaking down gate sand diversion wall structure, the branch stream side of dry flow and branch stream confluence has gate sand area, along the transverse extension of branch stream is used to guide water wall of high water level, guide water wall is set in gate sand area upstream;The middle part of guide water wall is equipped with gate, gate is installed in gate, and the guide water wall of gate extends downstream direction and is equipped with water retaining wall, water retaining wall extends into gate sand area, and water retaining wall includes left side wall and right side wall that are symmetrically arranged, left side wall and right side wall are all ladder-shaped, and the left side wall and right side wall are surrounded to be used to flush sand harmonic cavity for water retaining and flushing, and the downstream of flush sand harmonic cavity is narrower than upstream.The application also discloses corresponding use method.The application utilizes the structure of the application when breaking down gate sand, forms as intense resonance phenomenon as possible by artificial control height difference, and the breaking down efficiency and effect of gate sand are improved by corresponding water flow phenomenon.

This utility model belongs to the field of automotive parts, specifically relating to a sand core weight reduction structure applied to a low-pressure cavity subframe. It includes a sand core body and a cover. The thicker portion of the sand core body is hollowed out to form a concave structure. A step, approximately the same thickness as the cover, is provided at the upper end of the concave structure to accommodate the thin-walled cover. When the sand core body and the sand core cover are combined, the outer surface forms the interior required for the casting, and the interior forms a box-shaped cavity weight reduction structure. This reduces the amount of core sand used, lowers the labor intensity of operators during handling, and improves the efficiency of subsequent sand removal, thus enhancing the sand removal effect.