Oil cooling system of screw ice machine

The utility model relates to an oil cooling system of a screw ice machine. The oil cooling system comprises a lubricating part of the screw ice machine and an oil cooler. The lubricating part of the screw ice machine is connected with an oil-gas separator, a liquid outlet of the oil-gas separator is connected with the oil cooler, a gas-state ammonia outlet of the oil cooler is connected with a gas inlet of an evaporative condenser, and a liquid outlet of the evaporative condenser is connected with a liquid inlet of a siphon tank. The oil cooling system is simple in structure, smooth implementation of the liquid-state-ammonia-to-gas-state-ammonia-to-gas-state-ammonia discharging process in the oil cooler is guaranteed, the highest temperature of lubricating oil of the screw oil machine is lower than or equal to 55 DEG C, long-period stable operation of the screw ice machine is guaranteed, long-period stable and continuous operation of a normal-pressure tank is guaranteed, forced to-sky evacuation, caused by the high pressure, of the normal-pressure tank is avoided, technological operation can be stabilized, economic losses can be avoided, pollution to the environment can be avoided, and the expectant effect is achieved.