[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a multi-functional low-noise air compressor. A hollow cylinder is provided at one end of the air storage tank, and a tube receiving mechanism is provided on the cylinder. After the compressor is used, the remaining air in the air storage tank can be discharged into the drive chamber plate through the connecting pipe 1 and the elbow by opening the air valve in the tube receiving mechanism, and the air discharged through the drive chamber plate can be blown to the fan. leaves, so that the annular cover can be driven to rotate, so that the rotating cover can be driven to rotate on the cylinder through the annular cover, so that the rotating cover can wrap the hose or various connecting pipes, so that the hose can Wrapped on the fixed pipe groove of the arc-shaped plate on the outer wall of the rotating cover, there is no need to manually collect the hose, which can improve the efficiency of collecting the hose and enable the hose to be stored on the air compressor, thereby reducing the size of the hose. The occupied space, and the compressed air can be discharged into the ring cover 2 through the connecting pipe 2, so that the compressed air can drive the impeller to rotate, thereby driving the rotating shaft and the threaded rod to rotate, so that the threaded block can be driven by the threaded rod And the pulley is translated, so that the pulley can guide and collect the hose, so that the hose can be evenly wound on the rotating cover, so that it can not only prevent the accumulation and winding of the hose, but also prevent the hose from bending Folding, so as to improve the service life of the hose, by fixing the anti-loosening ring at the end of the rotating cover, the hose can be prevented from detaching from the rotating cover, and the sliding cover can be used to protect the hose to prevent damage to the hose from the outside world; The top of the gas storage tank is provided with a muffler mechanism, and the muffler box is installed in the muffler mechanism. Due to the velocity pulsation or pressure pulsation of the gas in the compressor inlet pipe, the gas sound radiation at the inlet of the reciprocating compressor will be caused by This will generate intake noise, so that the exhaust pipe can be used to connect the muffler box and the air inlet of the compressor, and the muffler box is provided with multiple layers of muffler cotton, so that the air entering the ventilation column can There is a noise elimination level between the compressor and the compressor, which can reduce the intake noise and reduce the noise of the compressor. Four support blocks are connected to the outer wall of the air storage tank. When the air compressor vibrates, it can The rotating rod is driven by the support block to rotate, so that the spring column can be squeezed to slide in the socket column three, and the reaction force of the spring column can reduce the vibration of the air compressor, and can pass through the sliding block at the bottom of the semicircle sleeve There is a shock-absorbing pad on it, which can reduce the overall vibration amplitude of the air compressor, thereby reducing the external surface vibration of the air compressor, thereby reducing the overall noise of the air compressor, thereby improving the service life of the machine, etc.; The expansion mechanism is provided in the air compressor, the expansion tank is provided in the amplification mechanism, and the fixed plate connected between the inner wall of the expansion tank passes through the tension spring and the inner wall of the air storage tank. The fixed plate is connected in two phases, so that when the air compressor compresses the air, due to the gradual increase of the gas pressure inside the air storage tank, it can squeeze the expansion tank and slide to the outside, so that the sliding ring plate and the limiting column can be placed in the sleeve. The sliding position of connecting column 1 is moved, so that the storage space of the air tank can be gradually increased, and when the air compressor is not in use, the amplification tube can Under the action of the tension spring, it can be stored in the air storage tank, thereby reducing the overall space occupied by the air compressor and making it easier to store.