The utility model discloses an improved device for preparing
ultrapure water in a laboratory, which comprises a water maker body, a
booster pump, a two-stage cotton core filtering device, a
pressure monitoring device and a protective shell. The
booster pump and the two-stage cotton core filtering device are arranged at the front end of the water making
machine body, so that the prominent problems of quick
pollution of key parts of the water making
machine body, low water making rate and the like caused by poor
water source quality are effectively solved, and the service lives of the
reverse osmosis column and the ultra-purification column in the water making
machine body are remarkably prolonged; the equipment maintenance cost and replacement frequency are reduced, the
water production rate is greatly improved, the
water quality stability and reliability of finished
ultrapure water in the later period in the transferring and using process are guaranteed, the overall performance and working efficiency of the
water production machine body are remarkably improved, and stable and reliable
ultrapure water supply is provided for
test analysis work; the overload protection device is arranged between the
booster pump and the external power source and used for preventing the booster pump from being damaged due to overload, and safety and reliability of the device are improved.