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Roots Vacuum Pump in Medicine

Vacuum technology in medicine is mainly used in the production of medical devices and drugs. Effective use of these new medical devices will contribute to the success of surgery, effectively prolong the use of drugs, vaccines, blood and increase the effectiveness of use. Since the 1960s, vacuum technology has been used in high-speed centrifuges, electron microscopes and X-ray tubes.


Clinical vacuum aspiration: Clinical aspiration is often seen in surgery. Small pat suction is mainly used for needle aspiration. In general, the main aspiration patients after surgery congestion, pus, vomit, ascites and sputum. Obviously, these must adopt continuous suction method, and at the same time prevent the invasion of bacteria, that is to say, strict aseptic operation should be guaranteed.


After facial and thoracic surgery, a micro-mechanical pump is often used to remove phlegm in the throat of patients. But for the removal of congestion, pus, vomiting and ascites, there must be a suction device. Water ejector, steam ejector pump, water ring pump, slide valve mechanical pump, rotary vane mechanical pump and Roots vacuum  pump are commonly used.


When using vacuum suction, there are certain requirements for the installation of vacuum pipeline, because with the start of the pump, it will quickly affect patients. The vacuum suction system of the vacuum suction device used in large hospitals can be operated by a vacuum pump, while many patients are treated by clinical suction. But each drainage pipe should be equipped with pressure and flow control, full plug and bacterial filter, at the same time, the quality of vacuum can be seen from audio and visual. This device is suitable for large surgical wards, avoiding the noise caused by using vacuum pumps separately, and reasonably improving the utilization rate of vacuum pumps. But with this vacuum suction system, the pipeline should be installed reasonably and the bacterial contamination of the vacuum pipeline should be avoided.


For vacuum aspirator, although the minimum pressure required is 50 Torr, the average pumping speed of vacuum aspirator can be as large as possible considering the disadvantages of long pipeline route, reduced flow conductivity and system leakage. The pressure regulating device can be used to select the suitable vacuum condition and the flow rate during suction. If a leak is found, it can be plugged in time.


In the specific operation, attention should be paid to the size of pumping speed. The pumping speed of the system is different from that of the actual pumping speed, because the designed pumping speed is for air, but in fact it is a kind of viscous liquid such as purulent blood and phlegm that is sucked. The flow rate of the suction fluid can be determined by adjusting the flow rate during suction, thus the actual pumping speed of the system can be estimated.

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ZJ Roots Vacuum Pump

ModelZJ-150ZJ-300ZJ-600ZJ-1200
Pumping speed(L/s)1503006001200
Ultimate pressure
(Pa)
1stage piston pump as backing pump5×10-2
2 stage piston pump as backing pump1×10-1
Max. allowable diff. pressure(Pa)8×1035×103
Motor rotary speed(RPM)3000
Suitable motor power(kW)2.247.511
Flange sizeInlet(mm)100150200250
outlet(mm)100150200200
Cooling water consumption(L/h)120150
Allowable temperature(℃)100
Vacuum pump oil100#
Weight(without motor)(kg)195250760860


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