什麼是膜過濾器壓力機？

當時間是一個關注的問題filter presscycle time, you might want to consider a membrane filter press.

一般來說，一個filter press需要4個小時填充。（實際時間取決於固體裝載能力和通過壓力機進料的漿料的類型）。然而，膜壓力機可以平均減少循環時間約為50％，並且在某些情況下，根據應用，甚至可以高達75％。

膜過濾器如何工作？

標準filter pressapplication for metal hydroxide sludge, for example, with plates that provide a 32mm cake thickness generally takes about 4 hours to fill. The unit is usually 80% full at about the 2-hour mark. Due to the high pressure (100 psi from the隔膜泵抵消了4,000 psi的液壓），抵抗構建和隔膜泵開始大大減慢。

如果您需要更快的周轉時間來恢複備份並運行，可能是明智的考慮膜壓力機。膜壓力機與標準相同filter pressexcept that the chambers (area between the plates) have membranes to squeeze out excess water from the slurry. A press with all membrane plates can be costly, however, the mixed pack is a more cost-effective alternative. In a mixed pack, each chamber has one side with a membrane that will inflate, thereby causing the squeezing action against a solid recessed plate. When the press is filled to about 80% capacity (this is determined by historical information and/or by the timing of the diaphragm pump), this is the ideal time to inflate the membrane diaphragms to provide the extra squeeze.

How are the Membranes Inflated?

充氣膜的最安全方法是使用水而不是空氣。如果您使用的是空氣來充氣膜，並且您經曆了撕裂，則冒著塑性破壞的風險，這可能極為危險。但是，如果您使用水並經曆破裂，您可能最終會漏水，這更安全，更容易包含。罐和泵用於通過歧管管道用水填充膜，該歧管管道將是不鏽鋼，PVC或鋼（取決於應用）和柔性管以將歧管連接到板。在擠壓過程中，水泵進入膜，並且一旦完成，它將被拉回水箱以進行再利用。

Types of Membrane Plates

有兩種類型的膜過濾板：聚丙烯膜板，具有焊接膜或聚丙烯板，具有可去除橡膠隔膜。在這兩個情況下，板是聚丙烯。焊接膜板是更昂貴的選擇。如果膜應該破裂，則需要更換整個板。第二種選項，具有可拆卸橡膠隔膜的PolyPro板更具成本效益。如果這些隔膜中的一個應該破裂，則沒有必要更換整個板塊。如果具有可拆卸橡膠隔膜的板斷裂，則隻需更換隔膜即可。這不僅是更便宜的，但它比等待訂購新印版更快的修複，因為這些隔膜通常有庫存，或者與數周或許多情況相比，焊接板的數月具有最小的交貨時間。

膜板也是中心進料，墊圈或角饋，非墊圈。角料，非墊圈是最流行的膜選項，因為它允許板/布的整個區域用於膜擠壓，而中心飼料設計對中心孔的壓力造成更多壓力，可以引起布料的淚液或在膜本身。

膜板已證明在許多應用中取得了成功。包括但不僅限於：

釀酒廠- 篩選MASH以獲得恢複釀造麥芽果。將醪液泵入壓力，然後壓縮直到最後一位麥芽汁擠出搗碎。這提供了快速轉機，每天釀造更多批次的啤酒。
Chemical Plants- 將產品泵入濾波器，然後膜充氣並擠壓以允許壓力機的快速變化以提高生產率。
Gold Mining– The faster the solids can be pumped into the membrane press, the quicker the press can be turned around for more batches to dewater the solids and reclaim gold.

在某些情況下，固體是浪費的情況下，壓力機不受菌株快速操作，標準的非膜式過濾器壓板足夠;但是當時間和周轉至關重要時，膜板是解決方案。

Phases of Membrane Filter Press Cycle

1 - Filling Stage

填充階段：The糊狀物enters the chambers through a feed pump.

2 - Filtration Stage

Filtration Stage:Once the chambers are full, the糊狀物that is being pushed by the feed pump will force the麥芽糖out from the chambers. The Filter Plates and Filter Cloths will capture the Mash Grains.

3 - 壓縮階段

壓縮階段：Once the feed pressure has cycled out, the system will be closed and the membrane squeeze will begin. Water or Air is pumped behind the membrane bladders. This compress the mash grains inside the chambers and forces out more麥芽糖.