8results about How to "Shorten the setting time" patented technology

This invention discloses an early-strength, high-stability road grouting repair material and its preparation, belonging to the field of solid waste utilization and road grouting reinforcement technology. The raw materials of the early-strength, high-stability road grouting repair material of this invention include multi-source solid waste aggregates and a water-reducing agent; the multi-source solid waste aggregates, by mass percentage, include: 6.6 wt% fly ash, 5-15 wt% rapid-hardening sulfoaluminate cement, 64-74 wt% mineral powder, 13.4 wt% desulfurized gypsum, and 1% carbide slag. This invention constructs a quaternary solid waste system of fly ash-desulfurized gypsum-mineral powder-carbide slag, synergistically forming a slurry composite system with rapid-hardening sulfoaluminate cement and a water-reducing agent, and precisely controls the concentration of raw materials. During hydration, this system can generate supporting crystals, which not only provide high early-stage stone strength for the road grouting material, but also, due to its good stability, ensure high stone strength stability in the later stages.

This invention relates to the field of vacuum forming machine technology, and proposes a negative pressure integrated vacuum forming machine and method. The machine includes a support platform, a mounting frame fixedly connected to the top of the support platform, a material feeding frame on the inner side of the mounting frame, a lifting mechanism on the inner side of the mounting frame, an infrared heater fixedly connected to the top of the inner side of the mounting frame, and a vacuum forming mechanism below the material feeding frame. The vacuum forming mechanism includes a mold, with an air cavity at the bottom of the inner side of the mold. A three-way pipe communicating with the interior of the air cavity is fixedly connected to the bottom of the mold. One end of the three-way pipe is fixedly connected to an air outlet pipe, and the other end is fixedly connected to an air inlet pipe. A dual-axis motor is fixedly installed inside the support platform. An air extraction component is provided at the outlet end of the air outlet pipe, and an air inlet component is provided at the inlet end of the air inlet pipe. This invention effectively solves the technical defects of traditional vacuum forming machines through uniform negative pressure adsorption in the air cavity, rapid cooling in the annular cavity, non-destructive positive pressure demolding, and integrated power transmission.

The utility model discloses a kind of anti-blocking vacuum cream packaging bottles, including packaging bottle body, sealing screw cap, pressing head and hose, the sealing screw cap is threadedly installed at the top of packaging bottle body, the pressing head is movably installed at the top of sealing screw cap, the hose is fixedly connected at the bottom of sealing screw cap, the outside of pressing head is fixedly connected with extrusion pipe.This anti-blocking vacuum cream packaging bottle, under non-use state, sealing gasket in the inside of baffle is against extrusion nozzle front side closed discharge port, reduce the cream in discharge port and outside air contact, avoid moisture loss, delay cream solidification time, when using, press and push baffle upwards, baffle drives the rotary rod of both sides to rotate around the outside of connecting column, make baffle and sealing gasket go up, open discharge port, make cream extrude and use from discharge port, to delay the solidification time of cream, improve the operation convenience, extrusion nozzle can be rotated from the outside of extrusion pipe, facilitate cleaning when blocking.

The shield engineering system comprises a first continuous conveying system, a second continuous conveying system, a second material processing system, a third continuous conveying system and an injection auxiliary system. The first material on the carrier is moved from outside the tunnel to inside the tunnel by the traction rope of the first continuous conveying system. The second material in a fluid state on the belt is moved from inside the tunnel to the pool outside the tunnel by the second continuous conveying system. The second material processing system is used for separating solid material and liquid material in the second material. The third continuous conveying system is used for continuously conveying or uninterruptedly conveying the second material in the pool to the second material processing system. The injection auxiliary system is used for injecting the third material in a fluid state into the surrounding rock and the segment gap of the tunnel. In the shield engineering system, the construction period of the shield construction in the tunnel is greatly shortened, the efficiency of the shield construction in the tunnel is improved, and the cost of the shield construction in the tunnel is reduced.

This invention relates to the field of continuous casting equipment for metal materials, and discloses a modified large-diameter crystallizing wheel, including a crystallizing wheel body. The crystallizing wheel body has casting grooves along its outer circumference, and a steel strip is wound around the outer diameter of the casting grooves. A central water collection seat is located at the center of the crystallizing wheel body. A heat insulation plate is fixedly installed inside the central water collection seat, and the interior of the central water collection seat is divided into an inlet chamber and a return chamber by the heat insulation plate. A spiral cooling groove is formed inside the crystallizing wheel body, and an annular return water groove is formed inside the crystallizing wheel body near the inner side of the spiral cooling groove. This invention, through multi-layer sealing, double-layer cooling, flexible clamping, and stable support design, significantly improves sealing reliability and cooling uniformity, avoids steel strip misalignment and billet defects, extends equipment life, reduces maintenance costs, is suitable for large-diameter multi-material continuous casting, and significantly improves product qualification rate.

The invention provides a blood coagulation detection chip and a blood coagulation detection method. The invention relates to the technical field of microfluidics. A blood coagulation detection chip comprises a vibration base; the first sliding layer comprises a first detection area which is configured to contain first liquid, the second sliding layer comprises a second detection area which is configured to contain second liquid, the first sliding layer is fixedly arranged on the vibration base, and the first sliding layer is in sliding connection with the second sliding layer; the first liquid is one of blood and a detection solution, and the second liquid is one of the detection solution and the blood corresponding to the first liquid; wherein the second sliding layer is configured to slide to a preset position relative to the first sliding layer, and the preset position represents a position where the first detection area is aligned with the second detection area; the vibration base is configured to drive the first sliding layer to vibrate by releasing vibration, so that the first liquid in the second detection area is mixed with the second liquid in the first detection area, and blood coagulation detection is carried out.

The invention discloses a shaping hair straightener. The shaping hair straightener comprises an upper hair clamping assembly and a lower hair clamping assembly, wherein the rear end of the lower hair clamping assembly is hinged to the rear end of the upper hair clamping assembly; the upper hair clamping assembly and the lower hair clamping assembly each comprise a refrigeration module and a heating module, the refrigeration modules are provided with liquid cooling or air cooling heat dissipation systems, and therefore rapid hair straightening and shaping are achieved. According to the shaping hair straightener, the heating modules and the refrigerating modules are arranged on the upper hair clamping assembly and the lower hair clamping assembly front and back, in the hair straightening process, the heating modules firstly conduct heating shaping, the refrigerating modules conduct refrigerating shaping, heating and refrigerating are conducted front and back at short intervals, the shaping time of straight hair is shortened, the maintaining time is longer after shaping, and the shaping effect is better. And meanwhile, the refrigeration module is used for rapidly cooling the heated hair, so that damage to the hair caused by too high hair straightening temperature can be avoided, and the natural, straight, smooth and glossy hair straightening and shaping effects are achieved.

This utility model relates to a grouting and water-blocking device for treating water inrush at a well working face. It includes a water-blocking structure and construction tools. The water-blocking structure is positioned above the water-rushing working face and below the static water level. The structure comprises, from bottom to top, an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The construction tools include a grouting pipe and a high-pressure grouting pump. The upper end of the grouting pipe is connected to the high-pressure grouting pump, which is located outside the well. The grouting pipe consists of a seamless steel pipe body with several outwardly extending grout nozzles in the upper middle part. A limiting device is located below the grout nozzles on the seamless steel pipe, allowing grout to flow only from the nozzles when activated. This utility model employs a three-layer combined grouting and water-blocking structure consisting of an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The grout stop layer structure formed by underwater integrated casting is more robust, enabling rapid and efficient sealing of water inrush at the working face and reducing project costs.