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

The present application is suitable for the field of cleaning technology. The present application discloses a kind of electric scouring car tools, including electric scouring head and handle connected with electric scouring head, be equipped with for washing and collection cycle circulation water tank on the handle, the circulation water tank includes the water tank body being equipped with first cavity, the water tank body is equipped with the water inlet and outlet mechanism for water to enter or discharge first cavity, the water tank body is further equipped with the pressure relief mechanism that communicates inside and outside first cavity, the pressure relief mechanism includes the second cavity and third cavity being independently arranged with first cavity, filter screen is arranged between the second cavity and first cavity, air passage component is arranged between the third cavity and second cavity, the third cavity is communicated with exhaust nozzle communicating with outside. Since exhaust nozzle and first cavity pass through the pressure relief mechanism of second cavity and third cavity, liquid can be avoided to enter exhaust pipeline, and air discharge is not affected. Effectively release the pressure rise phenomenon generated in water tank when liquid is recycled during use.

The dustproof air cylinder comprises an outer cylinder body, an inner cylinder body, a cylinder head seat, an exhaust channel and a filter screen, the inner cylinder body is assembled in the outer cylinder body, the cylinder head seat is assembled at one end of the outer cylinder body, an opening in one end of the exhaust channel is formed in the cylinder head seat, and an opening in the other end of the exhaust channel is formed in the filter screen. An opening in the other end of the cylinder head seat is formed in the side, close to the cylinder head seat, of the inner cylinder body, the filter screen is arranged on the exhaust channel, and the openings are formed in the cylinder head seat and the portion, close to the side of the cylinder head seat, of the inner cylinder body respectively to form the special exhaust channel, so that compressed gas generated when a piston is triggered can be directly exhausted through the exhaust channel. And therefore, the smoothness of the movement of the piston is ensured, and meanwhile, conditions are provided for realizing effective sealing at the cylinder head seat.

The application relates to a fireproof protection device for an aircraft fuel tank sediment drain valve and an aircraft. The fireproof protection device for the aircraft fuel tank sediment drain valve comprises an outer fixing cover, an elastic piece, an inner sealing cover and a high-temperature-resistant sealing ring; wherein the outer fixing cover is installed to the fuel tank, the inner sealing cover comprises a lower flange, the high-temperature-resistant sealing ring is installed between the lower flange of the inner sealing cover and a lower wall plate of the fuel tank, the elastic piece is installed between the inner top surface of the outer fixing cover and the lower flange of the inner sealing cover, the outer fixing cover comprises a plurality of flow-through channels located on the side surface of the outer fixing cover, the inner sealing cover is designed as a full sealing type and is used for covering the sediment drain valve. According to the above technical scheme, the application can achieve the following beneficial technical effects: the fireproof protection device can realize the fireproof performance while not affecting the original maintenance and discharge functions of the sediment drain valve.