阀门可用于控制空气、水、蒸汽、各种腐蚀性介质、泥浆、油品、液态金属和放射性介质等各种类型流体的流动。下面我们就看一下从结构特性与用途上是怎么分类的

　　Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Let's take a look at how it is classified based on structural characteristics and usage

　　一、阀门总的可分两大类：

　　1、 Valves can be generally divided into two categories:

　　第一类自动阀门：依靠介质（液体、气体）本身的能力而自行动作的阀门。

　　The first type of automatic valve: a valve that operates on its own by relying on the ability of the medium (liquid, gas) itself.

　　如止回阀、安全阀、调节阀、疏水阀、减压阀等。

　　Such as check valves, safety valves, regulating valves, drain valves, pressure reducing valves, etc.

　　第二类驱动阀门：借助手动、电动、液动、气动来操纵动作的阀门。

　　The second type of driven valve: a valve that is operated manually, electrically, hydraulically, or pneumatically.

　　如闸阀，截止阀、节流阀、蝶阀、球阀、旋塞阀等。

　　Such as gate valves, globe valves, throttle valves, butterfly valves, ball valves, plug valves, etc.

　　二、按结构特征，根据关闭件相对于阀座移动的方向可分：

　　2、 According to the structural characteristics, it can be divided into:

　　1.截门形:关闭件沿着阀座中心移动；

　　1. Truncated shape: The closing component moves along the center of the valve seat;

　　2.闸门形:关闭件沿着垂直阀座中心移动；

　　2. Gate shaped: The closing component moves along the center of the vertical valve seat;

　　3.旋塞和球形:关闭件是柱塞或球，围绕本身的中心线旋转；

　　3. Plug and ball: The closing component is a plunger or ball that rotates around its own centerline;

　　4.旋启形:关闭件围绕阀座外的轴旋转；

　　4. Swing shape: The closing component rotates around the axis outside the valve seat;

　　5.碟形:关闭件的圆盘，围绕阀座内的轴旋转；

　　5. Disc shape: a circular disc of a closure that rotates around the axis inside the valve seat;

　　6.滑阀形:关闭件在垂直于通道的方向滑动。

　　6. Sliding valve shape: The closing element slides in a direction perpendicular to the channel.

　　三、按用途，根据阀门的不同用途可分：

　　3、 According to their different purposes, valves can be divided into:

　　1.开断用：用来接通或切断管路介质，如截止阀、闸阀、球阀、蝶阀等。

　　1. Disconnecting function: used to connect or cut off pipeline media, such as globe valves, gate valves, ball valves, butterfly valves, etc.

　　2.止回用：用来防止介质倒流，如止回阀。

　　2. Check valve: used to prevent medium backflow, such as a check valve.

　　3.调节用：用来调节介质的压力和流量，如调节阀、减压阀。

　　3. Regulating: Used to regulate the pressure and flow rate of the medium, such as regulating valves and pressure reducing valves.

　　4.分配用：用来改变介质流向、分配介质，如三通旋塞、分配阀、滑阀等。

　　4. Distribution: Used to change the flow direction and distribute media, such as three-way plugs, distribution valves, slide valves, etc.

　　5.安全阀：在介质压力超过规定值时，用来排放多余的介质，保证管路系统及设备安全，如安全阀、事故阀。

　　5. Safety valve: Used to discharge excess medium when the medium pressure exceeds the specified value, ensuring the safety of pipeline systems and equipment, such as safety valves and emergency valves.

　　6.其他特殊用途：如疏水阀、放空阀、排污阀等。

　　6. Other special purposes: such as drain valves, vent valves, drain valves, etc.

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