NOVELTY - Self-service automatic biogas purifier comprises a bottom shell, a desulfurizing bottle, a hoop, a plastic throttle pressure adjusting valve, a three-way connection plug, a linear biogas pressure gage, a connecting screw, a desulfurizing bottle cover, desulfurizing bottle inner cover, bottle opening sealing ring, rubber hose and special nylon binding belt. The gas inlet and the gas outlet of the desulfurizing bottle are designed into the form of bell and spigot. The lower ends of the plastic throttle pressure adjusting valve and the three-way connection plug are designed into the form of plug.    USE - The purifier is useful for regenerating and updating desulfurizing agent.    ADVANTAGE - The purifier has convenient operation, has reliable sealing performance and is safe; completely eliminates the hidden trouble of the purifier and reduces the cost; ensures the user to easily and quickly uninstall and install the desulfurizing bottle by rotating the hoop about 90 degrees ; and the quick joint can endure more than 500 times of insert without any leakage.    DETAILED DESCRIPTION - Self-service automatic biogas purifier comprises a bottom shell, a desulfurizing bottle, a hoop, a plastic throttle pressure adjusting valve, a three-way connection plug, a linear biogas pressure gage, a connecting screw, a mask, a desulfurizing bottle cover, a desulfurizing bottle inner cover, a bottle opening sealing ring, a rubber hose and a special nylon binding belt. The gas inlet and the gas outlet of the desulfurizing bottle are designed into the form of bell and spigot. The lower ends of the plastic throttle pressure adjusting valve and the three-way connection plug are designed into the form of plug, and they are locked on the bell and spigot through a connecting hoop, so that the desulfurizing bottle can be split and connected quickly, and the biogas pressure gage is connected on the three-way connection plug by using the rubber hose.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the self-service automatic biogas purifier for convenient regenerating and updating desulfurizing agent.