5results about How to "Control switch" patented technology

The application provides a deep trench field effect transistor and a preparation method thereof, which comprises the following steps: forming a P-type layer and an N-type layer in an N-type substrate; forming a gate trench and a terminal trench; forming an N-type source region by ion implantation; forming a gate oxide layer in the trench; forming a first polysilicon layer, a thick oxide layer and a second polysilicon layer in the trench; depositing a dielectric layer; forming a drain contact region, a source contact region, a gate contact region and a terminal contact region; forming a source electrode, a gate electrode and a drain electrode, wherein the source electrode is connected with the N-type source region and the terminal contact region simultaneously. The source electrode, the gate electrode and the drain electrode can be attached to a heat dissipation substrate simultaneously, the heat dissipation path is greatly optimized, and the source path inductance is reduced; the source contact region of the application is arranged in the terminal region, and the source contact region is realized by directly etching the dielectric layer and the substrate below the dielectric layer, the process controllability is high, the steps are simple, and the etching process of the source contact region has high stability.

The utility model discloses a modularized plant greening wall surface system, which belongs to the technical field of landscaping, and comprises an installation fixing frame, the left side surface of the installation fixing frame is respectively and fixedly connected with a water collecting tank and green plant placing boxes arranged at equal intervals, and the inner wall of the water collecting tank and the inner wall of each green plant placing box are fixedly connected with extension barrier strips; the bottom face of the water collecting tank fixedly communicates with a water pumping pipe, the output end of the water pumping pipe fixedly communicates with a water pump, and the right side face of the water pump is fixedly connected with the left side face of the mounting fixing frame. According to the modularized plant greening wall surface system, by arranging a circulating water feeding pipe, a circulating water discharging pipe and an extending water pipe, the problem that roots of plants in green plant planting grooves are soaked in water all the time and rotten is solved, and then through cooperation of a capillary telescopic water pipe, a first electromagnetic valve, a fixing ring and a humidity sensor, the humidity of the plants is increased; the amount of water conveyed to the green plants in the green plant placing box by the capillary telescopic water pipe can be conveniently controlled, and the modular plant greening wall surface system can operate normally.

This utility model relates to the field of wastewater treatment technology, and more particularly to a stratified separation device for construction wastewater. It includes a support frame with a through hole in the middle. A hollow ring is fixedly connected to the upper surface of the support frame, and a treatment tank is inserted into the hollow ring. A fixing assembly for securing the treatment tank is provided on the support frame. A first electric push rod is fixedly installed on the treatment tank. The drive end of the first electric push rod is connected to a perforated pressure plate via screws. Filter cloth is connected to the lower surface of the perforated pressure plate via multiple Velcro straps. An opening is provided on one side of the treatment tank. This utility model effectively avoids extracting bottom sediment, eliminates the need for secondary treatment of the extracted supernatant, greatly improves the efficiency of separating the supernatant from the sediment in wastewater, and ensures the quality of the treated supernatant.

The utility model discloses a kind of tin fume closed type automatic conveying systems, using PLC control system to carry out automatic control, fume bin receives fume particle;Feeding tank is located below fume bin and is communicated fume bin;Feeding tank is communicated top blowing furnace by air conveying pipe;Sweeping part is parallel connected with air conveying pipe to blow into compressed air to its inner chamber;Pressure relief part is communicated the inner chamber of fume bin and feeding tank by pipeline to balance pressure;Vulcanization part carries out vulcanization to fume particle in feeding tank.The utility model carries out blowing to air conveying pipe using sweeping part before fume conveying, then fume particle in fume bin is conveyed to feeding tank, fume quantity in feeding tank reaches design value, then opening pressure relief part carries out pressure relief to fume bin and feeding tank, then fume in feeding tank is vulcanized by vulcanization part, finally feeding tank is conveyed to top blowing furnace by air conveying pipe to carry out reduction smelting of fume particle.

This application provides a vehicle refrigerator with a rope-driven drawer, relating to the field of vehicle refrigerator technology. The vehicle refrigerator includes a refrigerator body with a hollow interior forming a refrigerator chamber. An opening communicating with the refrigerator chamber is provided on one side of the refrigerator body. A drive structure is located at the rear of the refrigerator body. A fixed pulley is connected to the bottom wall of the refrigerator chamber near the opening. The drawer passes through the opening and is slidably connected to the refrigerator chamber. A movable pulley is located at the bottom of the drawer away from its pull-out side. The first end of the rope structure is elastically connected to the bottom of the refrigerator chamber away from the opening, and the second end passes through the movable pulley, the drive unit of the drive structure, the fixed pulley, and the movable pulley before connecting to the bottom wall of the refrigerator chamber near the opening. When the drive structure drives its drive unit to rotate, the rope structure's extension and retraction states are switched, causing the movable pulley to move, thereby controlling the opening and closing of the drawer. This design replaces the space-consuming drive arrangement in traditional drawer-type vehicle refrigerators, effectively reducing the overall volume of the vehicle refrigerator.