3results about How to "Does not affect discharge" patented technology

The utility model provides a cover device for the door and window drain hole and door and window, the cover device for the door and window drain hole comprises a metal cover plate and a metal gauze, the metal cover plate is provided with a through hole, the area of the through hole can at least cover the door and window drain hole, the metal cover plate is also provided with a clamping structure, and the metal gauze is arranged on the metal cover plate. The clamping structure is used for being clamped in the door and window drain hole to fix the metal cover plate; the metal gauze element is arranged on one side of the metal cover plate and can cover the through hole. By the adoption of the cover device for the door and window drain hole, accumulated water in the door and window can flow to the external environment through the metal gauze and the drain hole, meanwhile, foreign matter in the external environment can be prevented from entering a room due to blocking of the metal gauze, and particularly mosquitoes and the like are blocked outside the metal gauze.

The utility model provides a small coarse cereal processing system which comprises a huller, and a first elevator is arranged on the right side of the huller. A vibration separation sieve is arranged on the right lower side of the first elevator; a second elevator is mounted on the right side of the vibration separation sieve; the lower right side of the second elevator is provided with a rice mill, and the lower part of the rice mill is provided with a crushed material extracting and filtering frame structure; and a finished product classifying and conveying frame structure is arranged at the lower part of the crushed material extracting and filtering frame structure. According to the device, the protective net is used for conveniently shielding chippings, meanwhile, air is not influenced to be exhausted to the outer side, and the shielded chippings can be downwards guided to fall by using the protective net and are stored through the storage barrel.

The utility model relates to a kind of foreign matter prevention heat dissipation structure and wireless charging device, wherein foreign matter prevention heat dissipation structure includes: mounting seat, including the air duct extending along height direction;And fan assembly, including fan seat and fan, the fan seat is connected with the mounting seat to form cavity, the fan is located in the cavity, the cavity is communicated with one end of the air duct, the other end of the air duct forms air outlet, the air outlet is equipped with non-woven fabric.The utility model can effectively block the invasion of external foreign matter from air outlet into air duct inside while not affecting the exhaust of heat dissipation airflow, ensure the heat dissipation efficiency and service life of heat dissipation structure.