閥門可用于控制空氣、水、蒸汽、各種腐蝕性介質、泥漿、油品、液態金屬和放射性介質等各種類型流體的流動。下面我們就看一下從結構特性與用途上是怎么分類的

　　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、閥門總的可分兩大類：

　　1、 Valves can be generally divided into two categories:

　　第一類自動閥門：依靠介質（液體、氣體）本身的能力而自行動作的閥門。

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

　　如止回閥、安全閥、調節閥、疏水閥、減壓閥等。

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

　　第二類驅動閥門：借助手動、電動、液動、氣動來操縱動作的閥門。

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

　　如閘閥，截止閥、節流閥、蝶閥、球閥、旋塞閥等。

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

　　二、按結構特征，根據關閉件相對于閥座移動的方向可分：

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

　　1.截門形:關閉件沿著閥座中心移動；

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

　　2.閘門形:關閉件沿著垂直閥座中心移動；

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

　　3.旋塞和球形:關閉件是柱塞或球，圍繞本身的中心線旋轉；

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

　　4.旋啟形:關閉件圍繞閥座外的軸旋轉；

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

　　5.碟形:關閉件的圓盤，圍繞閥座內的軸旋轉；

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

　　6.滑閥形:關閉件在垂直于通道的方向滑動。

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

　　三、按用途，根據閥門的不同用途可分：

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

　　1.開斷用：用來接通或切斷管路介質，如截止閥、閘閥、球閥、蝶閥等。

　　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：用來防止介質倒流，如止回閥。

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

　　3.調節用：用來調節介質的壓力和流量，如調節閥、減壓閥。

　　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：用來改變介質流向、分配介質，如三通旋塞、分配閥、滑閥等。

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

　　5.安全閥：在介質壓力超過規定值時，用來排放多余的介質，保證管路系統及設備安全，如安全閥、事故閥。

　　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：如疏水閥、放空閥、排污閥等。

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

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