38results about How to "No compaction" patented technology

The invention belongs to the technical field of concrete functional additives, in particular to a leveling agent for mixing plant waste slurry water. prepared from raw materials. The leveling agent for waste slurry water is liquid at room temperature, has good homogeneity, meets the relevant standards for admixtures for concrete, can effectively improve the workability, compressive strength and impermeability grade of the obtained concrete, and reduces its bleeding It has important economic and environmental benefits to realize the recycling and reuse of wastewater from mixing plants.

The invention provides a method for extracting propolis by simulative biological fluid bed supercritical CO2 fluid, which comprises that: bran (or rice bran and the like) taken as biomembrane carrier and original gum particles after physical treatment simulate a fluid bed in an extraction kettle to perform gridded filling, the supercritical CO2 fluid is used for extraction, and the lowest speed of a granular bed converting from a stationary state to fluidization is regulated by regulating temperature, pressure and flow rate of the fluid in the extraction process so as to reach the critical fluidization state; therefore, high-quality and high-yield propolis extract is obtained through a cyclic process of fluidization diffusion, dissolution and separation between granules and the fluid. The method improves the yield of the propolis extract, reduces the cost, and extracts nearly all terpene compounds and 40 to 50 percent of flavonoid compounds in the propolis at the same time; and products do not have organic solvent.

The invention discloses an intermediate digging and sinking device for a large-diameter pipe pile, which comprises an auger drill rod, a pipe pile, a soil storage box and a power head. The pipe pile is a cylinder with a circular through hole in the middle, and the lower part of the pipe pile The two sides of the top are set in the shape of sharp knives, the auger rod is inserted into the pipe pile, the upper end of the auger rod is connected to the power head, and the lower end is connected to a reverse-wing expansion bit, and the upper end of the pipe pile is provided with the above-mentioned soil storage box. An intermediate support is inserted into the connection between the pile and the soil storage box, and the intermediate support is fixed with the column of the external power equipment to stabilize the pipe pile. A certain part of the lower part of the pipe pile is provided with a lower support. The column of the equipment is fixed to stabilize the pipe pile. The power head is connected with the wire rope on the rotating wheel of the external power equipment. The invention has the advantages of stability, safety, low cost, high benefit, no pollution, no noise, no soil extrusion, environmental protection and the like.

The invention discloses a pile sinking device for a middle digging hydraulic method pre-stressed centrifugal pipe pile (square pile). The pile sinking device comprises a main machine, a windlass, a bracket, a reaction frame, a power head, a soil sampling tank and a steel wire rope, wherein the windlass and the bracket are arranged on the main machine; the reaction frame, the soil sampling tank and the steel wire rope are arranged on the bracket; the power head is arranged inside the bracket; the lower side of the power head is connected with a soil sampling drilling rod; and the soil sampling drilling rod passes through the soil sampling tank, a piston rod and the centrifugal pipe pile (square pile) to the bottom of the device. The invention further provides a pile sinking method for the middle digging hydraulic method pre-stressed centrifugal pipe pile (square pile). The method comprises the following steps of: moving the main machine to a pile pressing position; making the main machine project into an inner tongue hole of the reaction frame through a tongue on the soil sampling tank; extending the piston rod to realize pile pressing; pressing the pile repeatedly, and separating the power head from the soil sampling drilling rod; connecting a second centrifugal pipe pile (square pile); and performing the steps once again. The pile sinking device has the advantages of safety, reliability, low cost, high efficiency, no noise, no pollution, no soil compression, no slurry, environmental friendliness and the like.

The invention relates to a multi-channel mixing type weighing system for a multi-sensor weighing device. The multi-channel mixing type weighing system for the multi-sensor weighing device comprises an upper singlechip and a lower singlechip, wherein the upper singlechip and the lower singlechip are electrically connected with each other through a control bus and a transmission bus; the lower singlechip is electrically connected with four sensors for sensing the weight of an object on the weighing system; an analog-to-digital converter which is used for converting analog signals to digital signals is arranged between each sensor and the lower singlechip; the lower singlechip and the analog-to-digital converter form an analog-to-digital matcher system; each analog-to-digital converter is arranged between the corresponding sensor and the corresponding lower singlechip; the upper singlechip is electrically connected with a register for registering data; and the upper computer is electrically connected with an adding device which is used for processing weighing data signals.