The effect of media characteristics on oil pump selection. First of all, the oil pump should generally convey lubricity in its literal sense.
liquid. If there is no corrosive, abrasive and clean liquid, as long as the conventional oil pump is used, it can be a gear pump or a three-screw pump. There is no special requirement on the material. The conventional material (carbon steel) can be used.
So what are the special physical and chemical properties of the medium that affect the selection of the pump?
1. If the medium is corrosive, the over-flow parts of the oil pump should be made of corrosion-resistant materials such as 304 stainless steel or other corrosion-resistant materials.
2. If the medium is abrasive, observe the abrasiveness. If the abrasiveness is serious, not only the material should be noticed, but also the structure of single screw pump or twin screw pump should be used.
3. If the medium is toxic and harmful to the human body, it is necessary to prevent the leakage of the medium. Therefore, it is important to work on the shaft seal of the oil pump. It is best to use a multi-spring mechanical seal.
4. If the viscosity of the medium is too low, it cannot be transported by gear pump or screw pump. The centrifugal oil pump should be used.
In the process of purchasing the pump, it is best to provide the physical and chemical properties of the medium to the pump factory, or to pass the medium to the media test to achieve the best selection effect.
Endoscope Cleaning Storage Device the effect is very important.
The status of management of nosocomial infections in gastroscopes:At present,the gastroscope,biopsy forceps cleaning,disinfection,and sterilization have not received enough attention.China is a high-risk area of viral hepatitis.Among all the country,the infection rate of hepatitis B virus is 42.4 % to 80.7 %;the detection rate of human HBsAg is 10 %,and the annual incidence rate is 230/100,000.At the same time,the number of HIV infections is rapidly increasing. Some hospital patients have not detected any infectious diseases before gastroscopy.AIDS patients often conceal their medical history when they visit the clinic.During the process of gastroscopy,they can easily cause nasal mucosa and upper digestive diseases.Oral mucosal bleeding,or because of poor blood coagulation mechanisms in patients with liver disease, leading to gastric mucosal bleeding,blood containing hepatitis B and other viruses will pollute the pipeline, such as gastroscopy,biopsy forceps sterilization is not complete,will cause pathogenic microorganisms The survival and reproduction of other patients,the pathogenic microorganisms can invade the human body through the damaged mucosa,causing iatrogenic infection,especially hepatitis B virus and HIV.
Endoscope Cleaning Storage Device
Endoscope Cleaning Storage Device,Medical Environmental Storage Cabinet,Single Door Storage Cabinet,Gastroscope Storage Cabinet
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