在污水处理中，以下几种阀门相对比较容易堵塞:

　　In sewage treatment, the following valves are relatively easy to clog:

　　截止阀

　　globe valve

　　截止阀是依靠阀杆压力，使阀瓣密封面与阀座密封面紧密贴合，阻止介质流通。它的结构特点导致其流道曲折，介质在阀内的流动方向改变较大。在污水处理中，污水里含有的各种杂质，如泥沙、纤维、固体颗粒等，流经截止阀时，很容易在阀腔和阀座附近堆积。而且截止阀的阀座通径通常相对较小，杂质更容易在此处形成堵塞，影响阀门的正常开启和关

　　Globe valves rely on valve stem pressure to tightly fit the sealing surface of the valve disc with the sealing surface of the valve seat, preventing the flow of the medium. Its structural characteristics result in tortuous flow channels and significant changes in the flow direction of the medium inside the valve. In sewage treatment, various impurities contained in sewage, such as sediment, fibers, solid particles, etc., can easily accumulate near the valve chamber and valve seat when passing through the shut-off valve. Moreover, the valve seat diameter of globe valves is usually relatively small, and impurities are more likely to form blockages here, affecting the normal opening and closing of the valve

　　闭，降低污水的流通效率。

　　Close and reduce the efficiency of sewage circulation.

　　疏水电动蝶阀-闸阀、废水月蝶阀

　　Hydrophobic electric butterfly valve - gate valve, wastewater monthly butterfly valve

　　节流阀

　　throttle valve

　　节流阀主要用于调节介质的流量和压力。它通过改变节流截面或节流长度来控制流体。在污水处理系统中，节流阀通常需要频繁地调节开度以适应不同的处理工况。当污水中的杂质随着水流通过节流阀时，由于节流阀的节流口较小，杂质容易在此处聚集。特别是一些纤维状杂质，可能会缠绕在节流口处，导致节流口堵塞，进而影响阀门对流量和压力的调节功能，甚至可能造成阀门损坏。

　　Throttle valves are mainly used to regulate the flow rate and pressure of media. It controls the fluid by changing the throttling section or throttling length. In sewage treatment systems, throttle valves usually need to be frequently adjusted to adapt to different treatment conditions. When impurities in sewage flow through the throttle valve, they tend to accumulate here due to the small throttle opening of the throttle valve. Especially some fibrous impurities may wrap around the throttle port, causing blockage and affecting the valve's ability to regulate flow and pressure, and even causing valve damage.

　　隔膜阀隔膜阀是用隔膜作启闭件，隔断阀体内腔与阀盖内腔和驱动部件的阀门。隔膜阀的隔膜下方空间容易积聚污水中的杂质，尤其是一些较重的固体颗粒。当这些杂质积累到一定程度时，会影响隔膜的正常运动，导致阀门无法完全开启或关闭。此外，如果污水中的粘性物质较多，还可能会附着在隔膜表面，进一步影响阀门的性能，甚至造成堵塞。在实际的污水处理工程中，为了减少阀门堵塞的情况，通常会在阀门前设置过滤装置，定期对阀门进行维护和清理并且根据污水的特性和处理工艺，合理选择阀门的类型和规格。

　　Diaphragm valve is a valve that uses a diaphragm as an opening and closing component to isolate the valve body cavity, valve cover cavity, and driving components. The space below the diaphragm of the diaphragm valve is prone to the accumulation of impurities in sewage, especially heavy solid particles. When these impurities accumulate to a certain extent, they will affect the normal movement of the diaphragm, causing the valve to be unable to fully open or close. In addition, if there are many viscous substances in the sewage, they may also adhere to the surface of the diaphragm, further affecting the performance of the valve and even causing blockage. In actual sewage treatment projects, in order to reduce valve blockage, a filtering device is usually installed in front of the valve, and the valve is regularly maintained and cleaned. Based on the characteristics of the sewage and the treatment process, the type and specifications of the valve are reasonably selected.

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