Building engineering sound insulation device

The utility model discloses a building engineering sound insulation device, and belongs to the technical field of building sound insulation. A sound insulation device for constructional engineering comprises a box body, a cavity A is formed in the box body, a box door is arranged on the front side of the box body, a cavity B is formed in the box door, a connecting pipe is arranged on the right side of the box door, a storage battery is arranged on the rear side of the box body, a water pump is arranged on the right side of the storage battery, sleeves are arranged at the four corners of the lower portion of the box body, wheels are arranged below the sleeves, and springs A are arranged between the sleeves and the wheels. The upper part of the box body is connected with an exhaust funnel, a baffle plate is arranged in the exhaust funnel, a floating ball is arranged below the baffle plate, a T-shaped plate is arranged above the baffle plate, a spring B is arranged above the T-shaped plate, and a pressure sensor