3results about How to "Simple and reliable process" patented technology

This utility model discloses a fuel filler cap, including a fuel filler cap body and a vent valve assembly disposed within the fuel filler cap body and capable of automatically opening and closing to establish an internal and external communication channel. The vent valve assembly includes a valve core, which is subjected to a pre-tightening force to close the internal and external communication channel. The valve core can be controlled to deform, and this deformation overcomes the pre-tightening force and opens the internal and external communication channel. The fuel filler cap of this utility model, with its automatically opening and closing vent valve assembly, can effectively prevent oil emulsification at the fuel filler cap, significantly reducing the probability of false engine diagnostics.

The utility model provides a tailing sand gravity coordination pre -homogenization system relates to mine filling technical field. The pre -homogenization system includes storage bin group and mixes hopper. The storage bin group contains at least three parallel warehouses, and each warehouse is equipped with independent feed inlet, bottom double curvature conical discharge port and gate; The curvature radius of the steep section of the discharge port lower part is less than 50% of the curvature radius of the upper gentle slope section, and the included angle between the generatrix of the lower steep section and the horizontal plane is greater than or equal to 75 degrees. The mixing hopper is located below the storage bin group, and the center axes of all discharge ports are located on the distribution circle with the center of the mixing hopper as the center; The inner wall of the mixing hopper is provided with guide plates, each guide plate is inclined downward along the center line and is symmetrical to both sides, and the center line is the highest point, and the inclination angle is 30-35 degrees. When the device works, multiple warehouses discharge synchronously, the material accelerates down through the discharge port, is guided by the guide plate, and is mixed under the action of gravity. The system eliminates time period fluctuation through multiple warehouse storage, realizes external power homogenization by using gravity cooperation and guide plate structure, and effectively prevents arch blockage by double curvature discharge port design. The structure is simple and reliable.