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                                                        隔膜式壓濾機無閥濾池的特點

                                                         膜式壓濾機無閥濾池的特點:

                                                         
                                                        The characteristics of the valveless filter in the membrane filter press:
                                                         
                                                         
                                                         
                                                        1、反沖洗是自動形成和停止的。這里有兩個問題值得注意,一是反沖洗過程中,隨著沖洗水箱水位的下降,沖洗強度逐漸減小,這對沖洗效果頗為有利;二是反沖洗過程中,隔膜壓濾機濾池不斷地在進水,并隨反沖洗水一起排出,造成水量損失。
                                                         
                                                        1, backwashing is automatically formed and stopped. There are two problems to be noticed here. One is that in the process of backwashing, with the drop of the water level of the flushing tank, the intensity of flushing gradually decreases, which is very beneficial to the washing effect; the two is in the process of backwashing, the filter filter of the diaphragm pressure filter is constantly in the water and is discharged with the backwash water, causing the loss of water.
                                                         
                                                         
                                                         
                                                        2、隔膜壓濾機無閥濾池的自動反洗只有在濾池的水頭損失達到周期終的允許水頭損失值時才能進行。如果濾池水頭損失還未達到允許值,而由于某些原因需提前反沖洗時,則必須采用強制反沖洗。為此,在無閥濾池中設有強制沖洗裝置,它是一根插在虹吸輔助管與抽氣管相接的上部的壓力管。需強制反沖洗時,打開壓力管上的進水閥門,高壓水流便很快地將虹吸管中空氣抽走,使虹吸形成。
                                                         
                                                        2. The automatic backwashing of the valveless filter of the diaphragm press can only be carried out when the head loss of the filter reaches the permissible value of the end of the cycle. If the filter head loss has not reached the allowable value, and due to some reasons need to be backwashed in advance, it must be forced backwash. Therefore, a forced flushing device is arranged in the valveless filter, which is a pressure pipe inserted in the upper part of the siphon auxiliary pipe connected with the suction pipe. When forced backwash is required, the inlet valve on the pressure pipe is opened, and the high-pressure water quickly sucks the air out of the siphon and forms the siphon.
                                                         
                                                         
                                                         
                                                        3、變水頭等速過濾。在過濾過程中,虹吸上升管中的水位隨著過濾時間的延續,濾層中懸浮物量的增加和濾層阻力的增大而升高。因此,在出水量不變的情況下,它呈變水頭等速過濾狀態,直至反沖洗開始。
                                                         
                                                        3, variable water head isokinetic filtration. During the filtration process, the water level in the siphon riser rises with the increase of filtration time, the amount of suspended matter in the filter layer and the resistance of the filter layer. Therefore, when the water yield is constant, it will change to the same speed and filter state until the backwash begins.
                                                         
                                                         
                                                         
                                                        4、采用小阻力配水系統。由于無閥濾池的結構特點,通常用低水頭反沖洗,因此只能采用小阻力配水系統。在火力發電廠中,無閥濾池的配水系統多數為格柵式
                                                         
                                                        4. Use small resistance water distribution system. Because of the structural characteristics of the valveless filter, the low water head is usually used for backwashing, so the small resistance water distribution system can only be used. In thermal power plants, the water distribution system of valveless filter is mostly grid type.
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