搅拌机在工程建筑中起着关键性的作用，它所运输的混凝土配比更加科学，搅拌更加均匀，工作效率也很高，这也是搅拌机在市场受欢迎的原因。搅拌机上有很多的部件，这些部件各司其职，共同完成搅拌机作业，每个部件都有它独特的作用，比如液压阀，搅拌机上的液压阀有很多，不同的液压阀作用不同。

The mixer plays a key role in engineering construction. The concrete it transports has more scientific proportioning, more uniform mixing and high working efficiency, which is also the reason why the mixer is popular in the market. There are many parts on the mixer. These parts perform their respective duties and jointly complete the mixer operation. Each part has its unique role, such as hydraulic valve. There are many hydraulic valves on the mixer, and different hydraulic valves have different functions.

搅拌机的液压阀是用来控制液压油的流动方向、流量和压力的，依次可以实现液压机械在不同作业情况下的动作要求。大致可以分为三类：

The hydraulic valve of the mixer is used to control the flow direction, flow and pressure of the hydraulic oil, which can successively realize the action requirements of the hydraulic machinery under different operation conditions. It can be roughly divided into three categories:

1.压力控制阀：小型搅拌机的压力控制阀是用来控制或调节液压系统中的液压油压力的阀类，如阀、溢流阀、背压阀等。

1. pressure control valve: the pressure control valve of small mixer is used to control or adjust the hydraulic oil pressure in the hydraulic system, such as safety valve, overflow valve, back pressure valve, etc.

2.流量控制阀：搅拌机的流量控制阀可以使液压油的流量维持在一定的数值，用以调节工作机构的运动速度，比如节流阀、行程控制阀等。

2. flow control valve: the flow control valve of the mixer can maintain the flow of hydraulic oil at a certain value to adjust the movement speed of the working mechanism, such as throttle valve, travel control valve, etc.

3.方向控制阀：搅拌机的方向控制阀可用于控制液压油流动的方向，有换向阀和单向阀两种，换向阀又分为滑阀和转阀两种，在液压操纵机械中，用得多的是换向阀，为了减少换向阀的安装体积，便于油路连接，往往将几个换向阀和阀安装在一起，或将阀体做成一个整体，称为多路换向阀。

3. directional control valve: the directional control valve of the mixer can be used to control the flow direction of hydraulic oil. There are two types of directional control valve and one-way valve. The directional control valve is divided into slide valve and rotary valve. In hydraulic operated machinery, the directional control valve is often used. In order to reduce the installation volume of the directional valve and facilitate oil circuit connection, several directional valves and safety valves are often installed together, or the valve body is made into a whole, which is called multi-channel directional valve.

小型搅拌机的液压阀的保养有一定的原则：平时要做好混凝土搅拌机的日常保养，比如对元件进行“点检”、“专检”，发现问题，一定要采取相应的措施进行排除，以保证各液压阀和液压系统的正常工作，如果是液压阀出现故障，一定要先找出故障原因，如果自己不了问题，那就找近的维修站去进行修理，且不可盲目的拆卸维修，否则很可能会造成更加严重的后果。

There are certain principles for the maintenance of hydraulic valves of small mixers: daily maintenance of concrete mixers should be done well at ordinary times, such as "spot inspection" and "special inspection" of components. If problems are found, corresponding measures must be taken to eliminate them, so as to ensure the normal operation of each hydraulic valve and hydraulic system. If the hydraulic valve fails, the cause of the failure must be found out first. If the problem cannot be solved by yourself, Then go to the nearest maintenance station for repair, and do not disassemble and repair blindly, otherwise it may cause more serious consequences.

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