Homegenising, filtering, de-aerating and packaging grease

Having the right process vessels is important for its manufacture, but the in-line equipment for finishing the grease is just as vital.  Where you are building a new grease plant or upgrading an existing grease plant, here are the components to make it as effective as possible:

PumpsGear Pump for Grease and Other Applications

The two main types of pump we supply are gear pumps and progressing cavity pumps.  Gear pumps are good over a wide range of temperatures and viscosities or grease consistencies.  Progressing cavity pumps are equally good in handling hgh viscosities but have the additional advantage of being able to create a full vacuum on suction if fitted with a rubber stator.  One issue to watch, though, is to ensure the stator has the right temperature rating to avoid it softening or melting when in use.

Colloid MillsMill with Ribbed Stator and Rotor

There are two main types of Colloid Mill that we normally supply, one has a ribbed stator and rotor (Charlotte or Fryma) and the other has a smooth stator and rotor (Premier).

Ribbed stator and rotor combinations are popular with grease manufacturers as the actions pounds the grease as well as shearing it. The smooth type is useful if you need to know exactly what size you are milling to.

Charlotte and Fryma mills are in-line, i.e. have inlet and outlet pipework, enabling them to operate both in circulation and discharge.  Premier mills have an outlet spout, limiting them to gravity discharge only.

Some grease plants use a homogenisers instead of mills.  A homogeniser consists of an exceedingly high pressure reciprocating pump feeding a spring loaded orifice.  This gives shear in two planes instead of one and are regarded as being technically superior to colloid mills.  However, they cost more and have a high wear rate, requiring regular scheduled maintenance.

FiltersGrease Filter

We are able to supply basket, duplex and scrape sided filters.  Scrape sided filters can either use a rotary or piston type scraper to remove residue.

Scrape side filters are popular for EP and Anti-Wear Grease manufacture where there are no solid powders in the mix, to remove undissolved soap or soap raw materials.  This ensures the grease gives bearings quieter running in service than most unfiltered greases.  It is sometimes a QA Requirement by certain customer.

De-aerators

We typically supply orifice type de-aerators for clarifying cloudy products.  If necessary, we can incorporate a vacuum chamber to remove a greater proportion of air.

De-aerators can either be gravity or line-fed depending on the plant set-up.  We can also supply automatic shut-off equipment to allow the de-aerator to double as a gravimetric filling machine.

Filling and Packaging EquipmentFilling Machine

We can supply either gravimetric or volumetric filling equipment, depending on the type of product and package size.  Greases and larger package sizes generally work better with gravimetric filling while other products work better with volumetric filling.