在全自动混凝土搅拌车液压系统和液压元件中，由于加工误差、装配误差以及配合表面间的相对运动，总会产生一些缝隙，当油液流经这些缝隙时，就会产生漏油现象，这种现象称为漏油。密封装置的泄漏主要有密封环的内泄漏和骨架旋转油封的外泄漏，其原因分述如下：
In the hydraulic system and hydraulic components of the fully automatic concrete mixer, due to processing error, assembly error and relative movement between mating surfaces, there will always be some gaps. When the oil flows through these gaps, there will be oil leakage, which is called oil leakage. The leakage of the sealing device mainly includes the internal leakage of the sealing ring and the external leakage of the skeleton rotating oil seal. The reasons are as follows:
（1）密封环的内泄漏原因
(1) Cause of internal leakage of sealing ring
A密封环与被密封零件表面有相对运动，引起不正常磨损。
A There is relative movement between the sealing ring and the surface of the sealed part, causing abnormal wear.
B密封环接触不良。
B Poor contact of sealing ring.
C密封环磨损不均匀。
C The seal ring is worn unevenly.
D密封环质量差，引起变形或断裂。
D The seal ring is of poor quality, causing deformation or fracture.
（2）骨架旋转油封的外泄漏原因
(2) Causes of external leakage of framework rotating oil seal
A被密封零件的径向跳动超过允许值，使骨架旋转油封磨损不均匀。
A The radial runout of the sealed parts exceeds the allowable value, which causes uneven wear of the skeleton rotating oil seal.
B密封件质量差，在高温下油封唇部变形，导致被密封件的圆柱表面拉伤。
B The quality of the seal is poor, and the lip of the oil seal is deformed under high temperature, resulting in the strain on the cylindrical surface of the seal.
内泄漏是液压系统内业液压元件内部油液从高压区域到低压区域的泄漏；外泄漏是液压系统内的油液泄露到液压系统外面的泻漏，如液压油缸的泄漏和油液管道的泄漏等。
Internal leakage refers to the leakage of internal oil in hydraulic components of hydraulic system from high pressure area to low pressure area; External leakage refers to the leakage of the oil in the hydraulic system to the outside of the hydraulic system, such as the leakage of the hydraulic cylinder and the leakage of the oil pipeline.
液压系统中产生泄漏的原因，是缝隙两端存有压力差，或组成缝隙的两配合表面相对运动。泄漏将使液压系统的效率降低并污染环境。
The leakage in the hydraulic system is caused by the pressure difference at both ends of the gap or the relative movement of the two mating surfaces that make up the gap. Leakage will reduce the efficiency of the hydraulic system and pollute the environment.
减少和预防内泄漏的措施：严格控制液压元件中有相对运动部位之间的配合间隙，其原则是即要保证良好的密封性，又要保证较小的运动阻力
Measures to reduce and prevent internal leakage: strictly control the fitting clearance between the relative moving parts in the hydraulic components, and the principle is to ensure good sealing and small movement resistance
减小和预防外泄漏的措施：提高液压油缸活塞杆的密封性，装配中要正确安装各种管道等连接件，注意液压元件配合表面的密封性，尤其是对各种液压元件的接头处更要特别重视。
Measures to reduce and prevent external leakage: improve the sealing of the piston rod of the hydraulic cylinder, correctly install various pipes and other connectors during assembly, pay attention to the sealing of the mating surface of hydraulic components, especially the joints of various hydraulic components.
搅拌车液压系统中密封装置的泄漏原因这个问题就在这里给讲解清楚了，希望能够给您好的帮助，更多事项就来我们网站http://www.zkzdsljbc.com进行咨询！
The reason for the leakage of the sealing device in the hydraulic system of the mixing truck is explained clearly here. I hope it can help you. Please come to our website for more details http://www.zkzdsljbc.com Consult!
