China News Service reported on June 17 that according to foreign media on the 17th, a new case of death from Middle East respiratory syndrome (MERS) was reported in South Korea and the death toll rose to 20. South Korean officials said that they will start trying "plasma therapy." The so-called plasma therapy is to treat the same virus with blood from a rehabilitation patient's blood. This therapy was once used to treat various infectious diseases such as Ebola and has been proven to be effective. However, since the first case of MERS infection was discovered three years ago, plasma therapy has not been widely used in the medical community, and there are no other effective treatments. The Minister of Health and Welfare of the Republic of Korea, Han Wenheng, said that the hospital has obtained the consent of two patients for a plasma therapy test. Although there is not enough information and cases in this treatment, he has confidence in Korean medical personnel. The South Korean health department reported on the 17th that there are 8 newly diagnosed patients with Korean MERS, and the total number of patients has increased to 162. Among them, 18 people are "instability." The segregated persons surged 922 people in one day, and the total number reached 6,508. The EU has also seen the first case of MERS input this year. German authorities said on the 16th that a 65-year-old man died of acute lung disease earlier this month. Before the man died, he went to the Middle East. He is believed to be infected with Middle East Respiratory Syndrome (MERS).
Daily maintenance of excavator hydraulic cylinders
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The hydraulic cylinder of an excavator is one of the important hydraulic components responsible for driving and controlling mechanical movements. In order to ensure the normal use of hydraulic cylinders and extend their service life, daily maintenance is necessary.
1. Regularly clean the hydraulic cylinder: During use, the hydraulic cylinder will be attacked by various pollutants, such as dust, sediment, oil stains, etc. These pollutants can affect the working efficiency and lifespan of the hydraulic cylinder. Therefore, it is necessary to regularly clean the hydraulic cylinder.
2. Regular inspection of seals: The seals of hydraulic cylinders are key components to ensure their normal operation. If the seals are damaged or worn, it can lead to oil leakage or unstable operation of the hydraulic cylinder. Therefore, it is necessary to regularly inspect the sealing components of the hydraulic cylinder and replace them in a timely manner if there is any damage or wear.
3. Regular inspection of hydraulic oil: The operation of hydraulic cylinders requires the support of hydraulic oil, so the quality of hydraulic oil has an important impact on the working effect of hydraulic cylinders. Regularly check the quality of hydraulic oil, and replace it promptly if there is contamination or deterioration.
4. Regularly check the hydraulic pipeline: The hydraulic pipeline is the blood vessel of the hydraulic cylinder. If there is oil leakage or damage to the pipeline, it can cause the hydraulic cylinder to not work properly. Therefore, it is necessary to regularly inspect the hydraulic pipelines and promptly repair or replace them if there is any oil leakage or damage.
5. Regularly lubricate the hydraulic cylinder: The piston rod and piston ring of the hydraulic cylinder need to be lubricated to reduce wear and friction. Therefore, it is necessary to regularly apply lubricating oil to ensure the normal operation of the hydraulic cylinder.
In short, the daily maintenance of excavator hydraulic cylinders is very important, which can extend their service life and improve work efficiency. Regular cleaning of hydraulic cylinders, inspection of seals, hydraulic oil, hydraulic pipelines, and lubrication of hydraulic cylinders are required.