5results about How to "Quick introduction" patented technology

This utility model discloses an underground civil defense ventilation structure for ventilation of underground civil defense facilities. It includes: several sets of ventilation pipe assemblies installed between the underground wall and the outside wall for ventilation of the underground civil defense facilities; each ventilation pipe assembly consists of an inner air module, a connecting pipe, and an outer air module. One end of the connecting pipe is connected to the inner air module, and the other end is connected to the outer air module; one end of the inner air module is connected to the underground civil defense facility, and the other end is connected to the connecting pipe; one end of the outer air module is connected to the external space of the underground civil defense facility, and the other end is connected to the connecting pipe; an outer air duct is installed on the outer air module, and at least two outer air branch pipes are installed on the outer air duct. One end of each outer air branch pipe is connected to the outer air duct, and the other end is connected to the external space of the underground civil defense facility. This solves the problems of ventilation efficiency and airflow control in underground civil defense passage structures.

The invention provides an atmospheric pollution detection device, and relates to the technical field of atmospheric pollution detection. The atmospheric pollution detection device comprises a supporting mechanism, a main body mechanism is fixedly arranged at the upper end of the supporting mechanism, an air inlet mechanism is fixedly arranged at the upper end of the main body mechanism, a first detection mechanism and a second detection mechanism are arranged in the main body mechanism, and the air inlet mechanism comprises an air inlet box. A first box door is hinged to one side of the front face of the air inlet box, a rain shelter is fixedly arranged at the upper end of the air inlet box, two mounting bases are fixedly arranged in the air inlet box, and air inlet turbines are fixedly arranged on the surfaces of the two mounting bases. By combining active and passive air inlet modes, the problem of detection deviation caused by non-uniform air inlet in the prior art is solved, meanwhile, multi-dimensional detection, real-time data transmission and flexible supporting adjustment are achieved, and the accuracy, adaptability and practicability of detection are remarkably improved.

The microwave receiving module comprises a low noise amplifier, a frequency mixer, an intermediate frequency filter, a gain amplifier and a video output module which are coupled, the frequency mixer is further connected with a local oscillator module, and the video output module comprises a detector; metal shielding covers are arranged on the peripheries of the local oscillator module and the detector, the metal shielding covers are connected with a continuous ground plane layer of a PCB (Printed Circuit Board) through welding or conductive adhesive tapes, the PCB is a multi-layer PCB, and the ground plane layer is an independent copper-clad layer in the multi-layer PCB; a via hole array is arranged below the ground plane layer located in the local oscillator module and the detector area, and the distance between adjacent via holes in the via hole array is smaller than or equal to 1 / 20 of the working wavelength; the metal shielding case is a copper cavity, a wave absorbing layer is attached to the inner wall of the metal shielding case, and honeycomb ventilation holes are formed in the metal shielding case. According to the utility model, the microwave receiving module can still work stably in a complex electromagnetic environment.

The utility model discloses intelligent energy heat storage equipment which comprises a heat storage assembly, a support is fixed to the side wall of the heat storage assembly, a mixing assembly is fixed to the inner wall of the support, a temperature sensor is installed in the mixing assembly, a controller is installed on the side wall of the mixing assembly, and the mixing assembly and the heat storage assembly are connected through a first valve part. The side face of the mixing assembly is connected with the second valve piece, and a third valve piece is installed at the bottom of the mixing assembly. According to the utility model, the mixing assembly and the plurality of groups of valves are arranged, and accurate control of the controller is matched, so that rapid adjustment of hot water with over-high temperature is realized. When the temperature of hot water is too high and the hot water cannot be directly utilized, the hot water can be quickly introduced into the mixing assembly, the cold water inlet amount is accurately controlled for mixing, the hot water cooling rate is effectively increased, waste caused by the fact that energy cannot be used in time due to too high temperature is avoided, and the overall utilization efficiency of the energy is greatly improved.

The utility model discloses a remote internet monitoring mine fire detection early warning device, and particularly relates to the technical field of mine fire monitoring, the remote internet monitoring mine fire detection early warning device comprises a vertical frame, and an electric push rod is fixed at the bottom end of the inner side of the vertical frame. By arranging the rotating rod, the guide frame, the rotating handle, the driving shaft and other structures, under the cooperation of the driving assembly, the guide frame can be driven to drive the rotating rod to rotate left and right back and forth, then the rotating rod can drive the movable cover at the bottom end to slide left and right back and forth on the bottom side of the fixed cover, and therefore the fixed cover can drive the air inlet pipe to greatly deflect left and right; under the cooperation of the first gear, the second gear, the driven shaft and other structures, the driven shaft can be controlled to drive the fan blades to rotate at the same time, suction force is generated below the fan blades to suck air and send the air to the detection head body, then surrounding air can be rapidly introduced into the connecting pipe in a large range, the air inlet dead angle is greatly reduced, the air inlet rate is increased, and the detection efficiency is improved. And the use effect is good.