5results about How to "Change flow velocity" patented technology

The application discloses an injection molding method for a toy light guide pipe, which can avoid the occurrence of flow lines and bubbles in the toy light guide pipe after injection molding. The technical scheme is as follows: an injection molding method for a toy light guide pipe, which comprises a mold provided with a cavity, and the cavity is provided with a gate through which glue is injected into the cavity, and the glue injection is divided into five stages, i.e., a first glue injection stage, a second glue injection stage, a third glue injection stage, a fourth glue injection stage and a fifth glue injection stage. The glue injection speed of the first glue injection stage is the largest, the glue injection speed of the third glue injection stage is larger than that of the second glue injection stage and the fourth glue injection stage, and the glue injection speed of the fifth glue injection stage is the smallest. The glue injection pressure of the first glue injection stage is smaller than that of the second glue injection stage, and the glue injection pressure of the second glue injection stage is smaller than that of the third glue injection stage. The application belongs to the technical field of injection molding.

The utility model provides a timing and quantitative speed regulation filter which comprises a base, a peristaltic pump is arranged on the base, a material cup and a bearing frame are located on the two sides of the peristaltic pump, a supporting plate is arranged on the bearing frame, a plurality of filtering parts are distributed on the bearing frame at intervals, and filtering discs are installed in filtering supports in the filtering parts. The filter cover is movably installed on the filter support and connected with a filter cup piece, the peristaltic pump is provided with a plurality of pump heads provided with liquid conveying pipes, different liquid conveying pipes can extract raw liquid in a material cup, the raw liquid is conveyed into the filter cup piece under the cooperation of the peristaltic pump, and the raw liquid flows into the filter cover to make contact with a filter disc of the filter support. A plurality of samples can be filtered at the same time, different filter cup pieces can be installed by replacing a filter cover, so that the detection working conditions of different samples are adjusted, a filter support is connected with a flow detection component, the filtering resistance of a stock solution is judged through flow, the detection comprehensiveness is improved, and the problems that existing filtering is high in manual participation frequency and high in efficiency are solved. And the processing efficiency is low.

This invention discloses a continuous flow microreactor flow rate control system and preparation method for the preparation of nano-β-MnO2, comprising a base, a first injection tube, a second injection tube, a microfluidic mechanism, and a collection mechanism. The first and second injection tubes are both fixedly mounted on the base, each containing a first reaction solution and a second reaction solution, respectively. The microfluidic mechanism is fixedly mounted on the base and communicates with the first and second injection tubes. A collection mechanism is also fixedly mounted on the base and communicates with the output end of the microfluidic mechanism. A temperature control mechanism for adjusting the temperature of the microfluidic mechanism is also provided on the base.

The utility model discloses high-viscosity modified emulsified asphalt cold regeneration equipment which comprises a first fixed seat, the side surface of the first fixed seat is fixedly connected with a motor, the output end of the motor is fixedly connected with a first barrel, and the outside of the first barrel is in transmission connection with a conveying belt; and the upper surface of the rack is fixedly connected with a first stirring bin and a second stirring bin, the side surfaces of the second stirring bin are each fixedly connected with two second driving motors, and the output ends of the two second driving motors are fixedly connected with a stirring shaft. By means of the structure, asphalt is conveyed to the first stirring bin through the conveying mechanism to be mixed, the heating device is installed on the water pipe, the situation that the emulsified asphalt becomes sticky due to temperature reduction in the mixing process of the emulsified asphalt is prevented, a heat dissipation structure is additionally arranged on the stirring shaft, and the influence of the temperature is prevented; and the flowing speed and direction of the materials can be changed, so that the interaction between the materials is facilitated, and the mixing uniformity is improved.

The utility model discloses a molten aluminum filtering device, which relates to the technical field of molten aluminum filtering and comprises a filtering box, a discharging pipe is fixedly connected to the inner wall of the filtering box, a butterfly valve is rotatably connected to the inner wall of the discharging pipe, a feeding pipe is fixedly connected to the inner wall of the top of the discharging pipe, and the butterfly valve is rotatably connected to the inner wall of the feeding pipe. A filtering mechanism is arranged on the outer wall of the filtering box and comprises an L-shaped plate, through the fixing rod and the filtering plate, when the disc rotates, the fixing rod is driven to do circular motion, when the fixing rod moves, the connecting rod is driven to do arc-shaped motion, when the connecting rod moves, the rotating shaft is driven to move, and then the rotating shaft drives the U-shaped plate to move back and forth; and meanwhile, the U-shaped plate slides in the sliding rail and the square groove, and then drives the filtering plate to move when the U-shaped plate moves, so that the filtering efficiency is improved, the flowing speed of the molten aluminum is changed through vertical movement of the filtering plate, and the situation that the flowing speed of the molten aluminum in the equipment is low, and consequently the filtering efficiency of the molten aluminum is reduced is avoided.