2results about How to "Auto shut off" patented technology

The utility model discloses an exhaust system of an aluminum casting die, which comprises a gas guide tank, the bottom end of the gas guide tank is fixedly connected with supporting legs, the top end of the left side of the gas guide tank is fixedly connected with a gas inlet, the right side of the gas guide tank is fixedly connected with a gas outlet, and a reset structure for an automatic closing device is arranged in the gas guide tank. According to the exhaust system of the cast aluminum mold, the movable plug is arranged, after the exhaust system is connected with an exhaust channel of the cast aluminum mold, air in the mold is guided into the top end of the interior of the air guide tank through the air inlet, the movable plug can be pushed to descend after the air pressure of the top end of the interior of the air guide tank reaches a certain value, and after the movable plug descends, the air outlet communicates with the interior of the air guide tank; and after the air pressure is reduced, the spring quickly jacks the movable plug back to enable the movable plug to be attached to the bottom of the positioning ring, so that the device is automatically closed while the aluminum liquid is prevented from overflowing, and the problem of automatic opening and closing is solved.

The utility model relates to connector technical field discloses a kind of electrical engineering with convenient plug electrical connector, including machine body, the outside of machine body is provided with engagement mechanism, the inner wall of machine body is fixedly connected with plug, the outside fixed connection of plug has dustproof mechanism, the engagement mechanism includes multiple gaskets, the outer wall of multiple gaskets is fixedly connected in the outer wall of plug, the outer wall of multiple first fixed link is uniformly fixedly connected with telescopic spring, the top of multiple first fixed link is uniformly fixedly connected with fixed button, the outside of machine body is uniformly provided with fixed assembly, the side of multiple abstracting plate far away is uniformly provided with magnetic attraction assembly.In the utility model, fixed pad cooperates with fixed plate to be firm in the inside of machine body, sealing pad is adhered to machine body by the elastic force of telescopic spring, dust and water vapor pollution is prevented, dustproof mechanism is automatically closed when plug is pulled out, dustproof and waterproof are realized, and the service life of connector is improved.