7results about How to "Improve hydration efficiency" patented technology

The application discloses a kind of high density low rebound shotcrete and preparation method thereof, it is related to shotcrete field, and preparation method includes: (1), respectively to cementitious material, fine aggregate, coarse aggregate is using MAA model to be packed and the design ratio of each raw material in interior is obtained;(2), cementitious material, fine aggregate, coarse aggregate and the rebounding agent of design ratio obtained according to step (1) are fully mixed, water, water reducing agent is mixed, then by the way of mixing with pressurized air, incorporate accelerator, obtain high density low rebound shotcrete.The application uses early strength rebounding agent, improves the pumpability of shotcrete, accelerates the early hydration of concrete, under the joint action of alkali-free accelerator, rapidly improves the early mechanical properties of shotcrete, improves shotcrete construction efficiency.Multiple close packing is used, and cementitious material, fine aggregate, coarse aggregate respectively form close packing structure, effectively improve the plastic viscosity of paste and the compactness of concrete.

The invention belongs to the technical field of chemical solution etching, and discloses a safe water supplementing device and a safe water supplementing method.The safe water supplementing device comprises a reaction tank, a liquid supplementing pipe and a cleaning pipe; wherein a reaction solution is contained in the reaction tank; one end of the liquid supplementing pipe is communicated with an external reaction water source, the other end of the liquid supplementing pipe is communicated into the reaction tank, and the liquid supplementing pipe is used for quantitatively supplementing reaction water into the reaction solution in the reaction process; one end of the cleaning pipe is communicated with an external cleaning water source, the other end of the cleaning pipe is communicated into the reaction tank, the cleaning pipe is used for introducing cleaning water into the reaction tank after the reaction is finished and all the reaction solution in the reaction tank is emptied, and the diameter of the liquid supplementing pipe is smaller than that of the cleaning pipe. According to the safe water supplementing device, a water supplementing pipeline and a flushing pipeline can be separated, so that the water supplementing amount is accurately controlled, and the safety problem caused by instant gasification of water in the reaction tank is avoided.

The utility model relates to water seal structure technical field especially relates to a water seal structure for gas cabinet section. Its technical scheme includes the water tank, the outer wall fixed sleeve of water tank has the water storage tank for storing water, the multiple communication pipes of communication setting in the outer wall of water tank, the upper end of communication pipe and the bottom surface communication setting of water storage tank, be located between water tank and water storage tank and be provided with the linkage assembly for controlling communication pipe switch. The utility model can realize the automatic water replenishing effect, avoids manual water replenishing frequently, improves water replenishing efficiency, guarantees the timeliness and accuracy of water replenishing simultaneously.

This invention discloses a low-carbon, high-density shotcrete admixture, its preparation method, and its application, relating to the field of concrete admixtures in building materials. The admixture comprises the following components by mass percentage: 53-73% rheological component, 15-25% thickening component, 10-18% early-strength component, and 0.5-4% setting regulator component. The rheological component includes manganese slag powder and silica fume, and the thickening component is tailings powder loaded with nano-modified cellulose ether. This invention increases the cohesiveness of shotcrete and improves the slurry encapsulation of concrete through the thickening component, increases the yield stress of concrete through the rheological component, and synergistically improves the adhesion and rapid hardening performance of the material after spraying by combining with the early-strength component, thereby reducing the rebound rate. Furthermore, the nanoparticles loaded on organic matter hydrate in the pores, directionally filling harmful pores, effectively improving the density and strength of shotcrete, achieving low-carbon, low-rebound, and high-density shotcrete.

The application discloses a groundwater recharge system based on bank slope step filtration, which comprises a water interception and distribution unit, a step filtration unit and an infiltration recharge unit. The water interception and distribution unit is composed of a rubber dam and a distribution pipe, the rubber dam can lift the upstream water level, and river water is introduced into the step filtration unit through the distribution pipe; the step filtration unit comprises two upper and lower filtration zones, both of which are double-layer filtration structures, and the bottom filtration layer is embedded with a perforated pipe; filtered water is discharged into the infiltration recharge unit through the perforated pipe in sequence, and the infiltration recharge unit comprises a shallow recharge layer and a deep recharge well. The raised river water is automatically overflowed to the backwater side embankment slope line filtration unit by the rubber dam, the water quality of the recharge source is improved, and the blockage phenomenon caused by recharge can be effectively prevented; the shallow recharge layer and the deep recharge well can be used to consider the recharge of shallow and deep groundwater, and the groundwater recharge efficiency is significantly improved.

The utility model relates to the technical field of cooling water replenishing, in particular to a water replenishing device and a coating cooling water system, which comprise a water supply pipeline, a first control valve and a water level detection piece, the water supply pipeline comprises a water inlet pipe and a first water outlet pipe which are communicated, and the first control valve is arranged on the first water outlet pipe and used for adjusting the flow in the first water outlet pipe; one end of the water level detection piece is electrically connected to the first control valve, and the other end of the water level detection piece is located in the external pool and used for detecting the water level height of the external pool. According to the water supplementing device, the water level detection piece and the first control valve which are designed in a split mode are adopted, so that the installation position of the water level detection piece can be far away from the first water outlet pipe, the water level detection piece cannot be impacted by water flow, the service life of the water supplementing device is prolonged, the maintenance time is greatly shortened, and then the water supplementing efficiency is improved.

This utility model discloses a water replenishment device for paper coating, including a base, an outer shell on the upper side of the base, and water replenishment shells on both the upper and lower walls of the outer shell. The inner walls of the two water replenishment shells are provided with evenly distributed air jet holes. It also includes an adjustment mechanism. The adjustment mechanism includes a guide groove, a sealing plate, a rotating shaft, a guide wheel, a synchronous drive assembly, and a detection assembly. The guide grooves are symmetrically opened laterally on the left and right walls of the water replenishment shells. Two longitudinally symmetrical sealing plates are installed inside each water replenishment shell. This water replenishment device for paper coating uses two sets of water replenishment elements to simultaneously replenish the upper and lower surfaces of the coated paper, improving the overall water replenishment efficiency. Simultaneously, through transmission and detection elements, the device can precisely adjust the width of the upper and lower water vapor jets according to changes in the paper width, eliminating the need for manual intervention and making it convenient and intelligent to use.