Where is the separation efficiency of the manual slag centrifugal separation filter reflected
The essence of separation efficiency lies in the degree of solid-liquid separation, solid phase capture rate, and liquid phase cleanliness. Combined with the structure of manual slag discharge machine (without automatic scraper/spiral slag discharge, relying on manual slag cleaning after shutdown), the efficiency is reflected in six dimensions:
1、 Solid phase interception/capture efficiency (core indicator)
1. Fine particle retention ability
Relying on filter bags/cloths/liners+strong centrifugal force field, it is much higher than atmospheric pressure filtration. Micro scale suspended impurities, sludge, cutting slag, coating sediment, and powder particles are intercepted in the inner filter layer of the drum, with high solid recovery rate and no visible suspended solids in the discharged clear liquid.
2. Heavy phase sedimentation enrichment effect
Centrifugal force amplifies the density difference between solid and liquid, causing heavy solid phases to quickly adhere to the wall and accumulate, without passing through the filter layer with the filtrate; Under the same materials and filter media, the solid-phase running loss of centrifugal machines is much lower than that of bag and plate frame atmospheric pressure filtration.
3. Compaction degree of slag layer
Continuous centrifugal action makes the stacked filter cake tightly compacted, resulting in a lower moisture content of the filter cake; When manually stopping the slag discharge, the slag material is compact and not rotten, reducing the secondary pollution of the filtrate caused by the reflux of solid phase and residual liquid, indirectly improving the overall separation efficiency.
2、 Cleanliness of filtrate (intuitive reflection of liquid-phase separation effect)
1. Significant decrease in turbidity and impurity content
After processing, the transparency of the clear liquid is significantly improved and can be directly reused; Compared to static settling and simple filter screen filtration, centrifugation can remove ultrafine colloidal particles that cannot settle after static settling.
2. No filter penetration or slag running phenomenon
Reasonably match the filter cloth aperture and centrifugal pressure, and ensure that the filtrate has no visible fine residue under normal operating conditions; If the separation efficiency is poor, the filtrate will become turbid and fine particles will continue to precipitate at the bottom.
3. Suitable for high-precision working conditions that meet standards
For example, removing iron powder from cutting fluid, removing coarse particles from insulation coating, and removing fillers from chemical fluid, the filtered liquid meets the standards for clean feeding in the next process.
3、 Unit processing capacity and filtration efficiency
1. High throughput, fast processing speed
Centrifugal force replaces pressure pumps, with greater driving force for permeation. With the same filtration area and material, the filtration flow rate is much higher than that of atmospheric pressure filtration; With the same production capacity demand, the equipment occupies a smaller area.
2. Not easily clogged, continuous and stable filtration
Solids accumulate on the outer wall, and the surface of the filter layer will not quickly become stuck; Compared to a single filter, it does not cause a sudden drop in flow rate in a short period of time, and the flow rate decays slowly during long-term operation, resulting in stable continuous processing efficiency.
Note: After the manual slag discharge machine reaches the set slag capacity, it needs to stop and clean the slag. The length of the slag cleaning cycle also reflects the efficiency - under the same feed concentration, more filter cakes can be accumulated before slag discharge, indicating higher separation and bearing efficiency in a single operation.
4、 Dehydration efficiency of filter cake (solid-liquid separation degree)
1. Low liquid content in filter cake
High speed centrifugation continuously removes free liquid from the filter cake gap, resulting in drier residue:
Significant weight reduction of slag materials and reduction of waste liquid carryover;
Reduce the costs of subsequent transportation, drying, and hazardous waste treatment;
This is an efficiency advantage that is difficult to achieve through atmospheric filtration, and it is also a key value of centrifugal separation.
2. Reduce liquid loss
When manually cleaning the slag, there is less residual liquid dripping from the dry slag, which will not cause a large amount of material liquid to be lost with the waste residue, and the material utilization rate will be improved.
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