In order to ensure the operation performance of the elevator, ensure the normal and reliable operation of the elevator hydraulic system, and control the hydraulic oil pollution. The main measure to control the pollution of the elevator hydraulic system is to reasonably select the filter ratio of the oil filter. The following section will give you a detailed analysis of how to control the hydraulic oil pollution of the elevator?

1、控制升降货梯液压油的工作温度，液压油工作温度过高对液压系统的工作元件不利，同时会使液压油加速氧化。一般机械液压系统的工作温度控制在65℃以下，工程机械液压系统工作温度以控制在80℃以下。控制液压油的工作温度主要是对液压系统的冷却器性能的控制，整个液压系统液压油油量的合理控制，液压系统元器件负荷及转速的控制。

1. Control the working temperature of the hydraulic oil of the elevator. Too high working temperature of the hydraulic oil will be detrimental to the working components of the hydraulic system, and will accelerate the oxidation of the hydraulic oil. The working temperature of general mechanical hydraulic system shall be controlled below 65 ℃, and that of construction machinery hydraulic system shall be controlled below 80 ℃. The control of the working temperature of the hydraulic oil mainly refers to the control of the cooler performance of the hydraulic system, the reasonable control of the hydraulic oil volume of the entire hydraulic system, and the control of the load and speed of the components of the hydraulic system.

2、升降货梯元件和系统在加工和装配过程中进行清洁，元件在加工制造中，每一工序都对加工中残留的污染物进行净化;元件装配前进行清洁处理，装配后进行严格的清洁和检验；油箱和管道在去除毛刺、焊渣等污染物后，需进行酸洗以去除其表面氧化物；对初装好的液压系统作循环冲洗，并定时从系统中取样分析，循环冲洗直系统清洁达到要求。

2. The components and systems of the elevator shall be cleaned during processing and assembly. During the processing and manufacturing of the components, the residual pollutants in the processing shall be purified and removed in each process; The components shall be cleaned before assembly and strictly cleaned and inspected after assembly; After removing burrs, welding slag and other pollutants, oil tanks and pipes shall be pickled to remove their surface oxides; Circulating flushing shall be carried out for the initially installed hydraulic system, and samples shall be taken from the system regularly for analysis. Circulating flushing shall be carried out until the system is clean and meets the requirements.

3、防止升降货梯污染物混入液压系统，油箱要合理密封并装设能的空气滤清器以防止尘土、水分的进入；注入新油经过的过滤，系统的回油也应进行的过滤；管路接头等连接处密封严密，防止尘土、水分和空气进入液压系统；活动件装有防尘密封装置。

3. Prevent the pollutants from the elevator from mixing into the hydraulic system. The oil tank shall be properly sealed and equipped with an effective air filter to prevent dust and moisture from entering; Filter the injected new oil and the return oil of the system; Pipe joints and other connections shall be tightly sealed to prevent dust, moisture and air from entering the hydraulic system; The moving parts are equipped with dust sealing devices.

4、升降货梯液压油的过滤和净化，液压油过滤器是液压系统中控制油液污染的重要元件，滤油器的应用保证过滤精度符合系统的使用要求，由流体阻力引起的压力损失应尽可能小，并应具有足够的油垢容量；定时对滤油器进行检查和净化。液压系统油液的污染度随着外界污染颗粒侵入率和系统内各种磨损颗粒数的增加而增大，随着过滤比的增大而减小，因此合理选择过滤比可地降低系统的污染度。固体颗粒是工程机械液压系统污染的主要来源，通过合理选择滤油器的过滤比是控制系统污染的主要措施。

4. Filter and purify the hydraulic oil of the elevator. The hydraulic oil filter is an important element in the hydraulic system to control oil pollution. The application of the oil filter ensures that the filtering accuracy meets the operating requirements of the system. The pressure loss caused by the fluid resistance should be as small as possible, and it should have sufficient oil dirt capacity; Check and purify the oil filter regularly. The pollution degree of the hydraulic system oil increases with the increase of the invasion rate of the external pollution particles and the number of various wear particles in the system, and decreases with the increase of the filtration ratio. Therefore, the reasonable selection of the filtration ratio can reduce the pollution degree of the system. Solid particles are the main source of pollution in the hydraulic system of construction machinery. The main measure to control the system pollution is to reasonably select the filtration ratio of the oil filter.

5、定期检查和更换升降货梯液压油，液压油在使用过程中，污染物的侵入会对液压系统造成不良的影响，要对液压油污染进行的控制，定期对各密封处、接头处进行检查处理，对液压系统的液压油进行检查分析，还要定期更换液压油。更换液压油时将旧液压油放净，整个液压系统先清洁后，再注入新的液压油。

5. Regularly check and replace the hydraulic oil of the elevator. During the use of the hydraulic oil, the invasion of pollutants will cause adverse effects on the hydraulic system. Control the pollution of the hydraulic oil, regularly check and deal with the seals and joints, check and analyze the hydraulic oil of the hydraulic system, and regularly replace the hydraulic oil. When replacing the hydraulic oil, drain the old hydraulic oil, clean the entire hydraulic system first, and then inject new hydraulic oil.

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