Cloth Disc Vacuum Filter
A cloth disc vacuum filter uses cloth-covered rotating sectors to separate solids from slurry continuously. Ask for this route when you want to compare cloth media and cake release with the alternatives on the same feed.
How a Cloth Disc Filter Works
Vacuum draws filtrate through the cloth while the sector is submerged. The cake continues to dewater above the slurry level before discharge. Discharge and cloth cleaning are design-specific. Where the proposed machine uses blowback, confirm its compressed-air demand and how the cake drops into the receiving chute.
Qué hay que especificar
| Elemento de configuración | What the supplier should confirm |
|---|---|
| Cloth and sector | Fabric and attachment method, chemical and abrasion suitability, and replacement access. |
| Feed tank | Solids concentration range, agitation and operating level, and how the design handles settling. |
| Vacuum and discharge | Vacuum supply, filtrate routing, cake release method and discharge clearances. |
| Cleaning and maintenance | Cloth cleaning arrangement, utilities, change interval assumptions, and access for valves and sectors. |
When to Compare Ceramic or Pressure Filtration
Compare cloth and ceramic media if either could sustain the required output. Check cake release, filtrate quality during startup and steady running, and how cleaning affects operating time. If the cake target remains difficult under vacuum, include a filtro prensa de membrana trial on a comparable sample. Define the comparison in the testwork brief.
Read the Cycle Before Selecting the Cloth
Specify the cloth against the actual slurry. Finer retention may improve early filtrate quality but can also restrict flow or make the cloth harder to clean. A more open cloth is worth testing when the cake forms quickly enough to retain fines. Record the initial and established filtrate separately so an acceptable average does not hide a startup stream that needs diversion.
When a Cloth Trial Is Worth Running
| What you see | What to compare |
|---|---|
| Ceramic sectors lose rate after repeated cycles | Compare cloth on the same feed if ceramic regeneration does not recover enough capacity. Record cloth cleaning time and fabric condition over repeat runs. |
| The cake forms but sticks | Test release with the proposed cloth and discharge mechanism. A leaf test can screen cake formation, but ask for a demonstration of discharge if release drives the decision. |
| Release is good but the cake is still too wet | Try a realistic change in drying time and record the throughput penalty. If vacuum cannot meet both duties, compare pressure filtration. |
| Filtrate carries solids at startup | Check cloth seating and condition, then sample after cake formation. Compare an alternate fabric or temporary diversion against the receiving process limit. |
For a PORVOO configuration review, separate the filter and cloth sectors from the vacuum package, receiver, any discharge air system and wash supply. For a retrofit, confirm existing utility capacity while the filter is operating and check the clearance for removing sectors and replacing cloth. Ask the quote to state whether the comparison rate includes cleaning and fabric changes. See the ANDRITZ rotary disc filter description for independent background on continuous cake formation and discharge.
Discuss Your Project
Send the slurry duty, known particle-size range, cake destination and available vacuum or air utilities. For a replacement, include the current model, filtration area and cloth specification.
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