在污水處理中，以下幾種閥門相對(duì)比較容易堵塞:

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

　　截止閥

　　globe valve

　　截止閥是依靠閥桿壓力，使閥瓣密封面與閥座密封面緊密貼合，阻止介質(zhì)流通。它的結(jié)構(gòu)特點(diǎn)導(dǎo)致其流道曲折，介質(zhì)在閥內(nèi)的流動(dòng)方向改變較大。在污水處理中，污水里含有的各種雜質(zhì)，如泥沙、纖維、固體顆粒等，流經(jīng)截止閥時(shí)，很容易在閥腔和閥座附近堆積。而且截止閥的閥座通徑通常相對(duì)較小，雜質(zhì)更容易在此處形成堵塞，影響閥門的正常開啟和關(guān)

　　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

　　閉，降低污水的流通效率。

　　Close and reduce the efficiency of sewage circulation.

　　疏水電動(dòng)蝶閥-閘閥、廢水月蝶閥

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

　　節(jié)流閥

　　throttle valve

　　節(jié)流閥主要用于調(diào)節(jié)介質(zhì)的流量和壓力。它通過(guò)改變節(jié)流截面或節(jié)流長(zhǎng)度來(lái)控制流體。在污水處理系統(tǒng)中，節(jié)流閥通常需要頻繁地調(diào)節(jié)開度以適應(yīng)不同的處理工況。當(dāng)污水中的雜質(zhì)隨著水流通過(guò)節(jié)流閥時(shí)，由于節(jié)流閥的節(jié)流口較小，雜質(zhì)容易在此處聚集。特別是一些纖維狀雜質(zhì)，可能會(huì)纏繞在節(jié)流口處，導(dǎo)致節(jié)流口堵塞，進(jìn)而影響閥門對(duì)流量和壓力的調(diào)節(jié)功能，甚至可能造成閥門損壞。

　　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.

　　隔膜閥隔膜閥是用隔膜作啟閉件，隔斷閥體內(nèi)腔與閥蓋內(nèi)腔和驅(qū)動(dòng)部件的閥門。隔膜閥的隔膜下方空間容易積聚污水中的雜質(zhì)，尤其是一些較重的固體顆粒。當(dāng)這些雜質(zhì)積累到一定程度時(shí)，會(huì)影響隔膜的正常運(yùn)動(dòng)，導(dǎo)致閥門無(wú)法完全開啟或關(guān)閉。此外，如果污水中的粘性物質(zhì)較多，還可能會(huì)附著在隔膜表面，進(jìn)一步影響閥門的性能，甚至造成堵塞。在實(shí)際的污水處理工程中，為了減少閥門堵塞的情況，通常會(huì)在閥門前設(shè)置過(guò)濾裝置，定期對(duì)閥門進(jìn)行維護(hù)和清理并且根據(jù)污水的特性和處理工藝，合理選擇閥門的類型和規(guī)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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