Hand-held multifunctional polishing, carving and cutting machine with built-in air pump

The utility model relates to a hand-held multifunctional polishing, carving and cutting machine with a built-in air pump, and the machine can be used for solving the problems that a polishing, carving and cutting machine is large in volume and inconvenient to carry, and tiny parts cannot be polished, carved and cut. The hand-held multifunctional polishing, carving and cutting machine is structurally characterized in that an air pump is arranged in a machine case; a high-speed handle, a low-speed handle, a spray gun and a barometer are arranged on the inner surface of a case cover on the upper part of the machine case; a water adjusting valve is arranged close to the upper part of the spray gun; a steam water diaphragm valve is arranged in one side of the case cover; the high-speed handle is connected with the steam water diaphragm valve through a joint and a guide pipe; the low-speed handle is connected with the steam water diaphragm valve through a low-speed joint and a guide pipe; the spray gun is connected