The utility model discloses a
smoke-sensing
fire hazard detector, which comprises a mounting plate, the lower surface of the mounting plate is fixedly connected with a shell, the lower surface of the shell is provided with a through hole, the side wall of the through hole is slidably connected with two vertical rods, the upper ends of the two vertical rods are fixedly connected with a fixing plate, and the fixing plate is fixedly connected with the lower surface of the shell. One side of the fixing plate is fixedly connected with a supporting plate, a lifting mechanism is installed above the supporting plate, and the lower surface of the fixing plate is rotationally connected with a
wireless smoke detector. By arranging arc-shaped plates, the lifting mechanism pulls the
wireless smoke detector back into the shell, the two arc-shaped plates get close to each other, the
wireless smoke detector is arranged between the two arc-shaped plates in a covering mode, the wireless smoke detector is rapidly cleaned, dust falls from the wireless smoke detector and falls on a filter screen on the lower portion, and the dust is blocked; a large amount of dust is prevented from falling out of the shell, the device can automatically clean the wireless smoke detector in the shell, and manual cleaning of cleaning personnel is not needed.