The invention discloses an energy-saving environment-friendly heating ventilation air conditioning system, and relates to the technical field of air conditioning. The problems that air conditioning heating losses are too large, and energy saving is too poor are solved. The energy-saving environment-friendly heating ventilation air conditioning system comprises a heating system, the upper surface of the heating system is provided with a fixing structure, one end of the heating system is in clamping connection with a heating structure, and the other end of the heating system is in clamping connection with a heat exchange pipe; a draught fan is fixedly installed on the lower surface of the heating system, and heat insulation pipelines are installed at the two ends of the draught fan; the outer surfaces of the two ends of the heating system are both provided with connection structures; the heating system comprises a shell, an air duct, a compressor, an evaporator and a fan; and the inner side of the shell is provided with the air duct in a penetrating mode, and the evaporator is fixedly installed at one end of the inner wall of the air duct. According to the energy-saving environment-friendly heating ventilation air conditioning system, environment protecting and energy saving of air conditioning are achieved, and moreover, all structures of the device are more convenient to install.

Energy-saving environment-friendly heating ventilation air conditioning system

The invention relates to the technical field of gas masks, and discloses a gas mask having a safety diet function. The gas mask comprises a liquid ration linking apparatus and a gas mask apparatus; the liquid ration linking apparatus and the gas mask apparatus are connected by means of a water drinking pipe; a connecting valve is fixedly mounted on the gas mask apparatus; a three-way valve is provided on a hose; a terminal plug slot is fixedly mounted under the gas mask apparatus; two baffle plates are movably mounted in a connecting pipe; rotation shafts are movably mounted at the ends, awayfrom each other, of the two baffle plates; two rotation shafts are fixedly connected to the wall of the connecting pipe; and disc-shaped springs are fixedly mounted between the two baffle plates and the two rotation shafts. At this time, a user is required to appropriately extrude the liquid ration linking apparatus to convey foods in the liquid ration linking apparatus into the gas mask apparatus, so that the effect of supplying to the user is achieved, and the infection to the user or foods from virus, bacteria, nuclear pollutants and chemical pollutants can be effectively obstructed.

Gas mask having safety diet function

The invention relates to a drop-proof plugged pipe connecting structure. Both ends of the pipe body of a pipe fitting are provided with a bell mouth and a socket, and the inner wall of the bell mouthis provided with two sliding chutes in the axis direction of the pipe fitting; the inner wall of the bell mouth in the middle position of the sliding chutes are provided with a limit slot radially, and each sliding chute is divided into two parts by the limit slot; the limit slot penetrates the sliding chutes, and the outer wall of the socket is provided with two stop blocks matched with the sliding chutes; and the stop blocks can be clamped in the limit slot. According to the drop-proof plugged pipe connecting structure, when the pipe fittings are connected, the socket of one pipe fitting tobe connected is aligned to the bell mouth of the other pipe fitting to be connected, and the stop blocks on the socket are aligned to the sliding chutes on the bell mouth, and slid into the sliding chutes for connection; when the stop blocks reach the position of the limit slot, the two pipe fittings are rotated relatively, so that the stop blocks on the socket are clamped in the limit slot on thebell mouth, and then the connection of the two pipe fittings can be finished; and the connected pipe fittings have good drop-proof performance by virtue of the limit slot and the stop blocks.

Huang Yalei

Papers

Drop-proof plugged pipe connecting structure