2 results about "Mix proportion" patented technology

The invention discloses a ceramic valve element with a drinking water control function. The ceramic valve element is formed in the manner that a rotating base is arranged in a valve shell in an assembled manner, a linking block, a movable valve block and a fixed valve block which are sequentially overlapped are arranged below the rotating base, a valve rod upwards extending out of the valve shell is arranged in the rotating base in pivoted manner, a stirring part at the bottom end of the valve rod and the linking block are embedded, the movable valve block is embedded through the linking block, and the movable valve block is driven by the linking block to move horizontally or rotate through the operation of the valve rod; by means of the change of the position corresponding relation between the movable valve block and the fixed valve block, a tap is controlled to allow water to flow or stop water flowing, or the mixing proportion of cold water and hot water and the output water flow are changed, and internal members such as the fixed valve block, the movable valve block, the linking block and the rotating base are stopped from dropping out through combination of a valve seat below the valve shell. The ceramic valve element can control use of tap water and drinking water, and the complexity of the whole structure is effectively simplified.

The invention discloses a concrete mix proportion optimization method based on working performance and manufacturing cost, and the method comprises the following steps: taking the mass of each component of concrete as a design variable, under the constraint condition that the working performance of the concrete meets the use requirement, determining an objective function about the strength and the cost of the concrete, and solving an optimal solution of the design variable through the objective function. The method has the advantages that compared with an existing method, the influence of multiple parameter variables in design can be considered at the same time, and the unit strength cost is reduced while the concrete performance is guaranteed; the method is not only suitable for self-compacting concrete, but also suitable for optimizing the mix proportion of common concrete and other special concrete.