Fluid & Solids Handling

Liquid Jet Pumps

Liquid Jet pump for acid dilution on
water treatment works (PVCu internals
and steel support shell)

Transvac has supplied thousands of units to the process and allied industries. Using liquid as the motive force Transvac Jet Pumps can accurately entrain, mix and dilute a secondary liquid, eliminating the need for mechanical dosing pumps and mixers.

In operation a high velocity jet of pressurised liquid discharged from the motive nozzle produces a region of low pressure in the suction chamber that entrains the secondary liquid. The two streams then thoroughly mix in the throat before the resulting mixture flows through the diverging cone to regain some pressure in order to overcome system discharge heads.

Typical Applications

Acid / caustic dosing system
for power station water treatment plant

• Chemical Dosing & Dilution
• Polyelectrolyte Production
• Ion Exchange Resins
• Activated Carbon / Lime
• Sludge & Slurry Handling

Advantages

• Simple and reliable
• No moving parts
• In-line mixing
• Custom designed
• Materials to suit process
• No maintenance

Single units or complete skid mounted packaged systems are available, each unit is designed to specific process conditions. Standard materials of construction include rubber-lined, PVCu, PP, PTFE, PVFD, hastelloy, titanium, stainless steel and carbon steel. Connections included flanged, screwed, plain, hosetail, bauer and quick-release etc..

Liquid Jet Solids Pumps

A versatile method of entraining, mixing and pumping solids into liquids. The Venturi principle offers many advantages over other types of high shear mixing equipment on the market. Robust and highly reliable with no moving parts to wear, the units are virtually maintenance free.

Available in either stationary, portable or mobile models the custom designed Liquid Jet Solids Pump (LSP) units can be supplied as individual items or complete skid mounted systems including motive pump, valves etc. Powder can be loaded manually or automatically using screw feeders at ground level, thereby keeping powder handling at a minimum. In many cases fluid energy from existing pumps can be used which eliminates the need for additional power.

Advantages

Hygienic designed LSP for entraining
and mixing dextrose powder

• Reduced powder handling
• No moving parts
• Complete mixing of powders and liquids
• Materials to suit process
• Low level operation
• Reduced batch times
• No maintenance
• Existing pumps can often be used

Depending upon the process conditions operation can be on a once-through or recirculation basis.

Materials of construction can be varied to suit the process environment. Stainless steel, carbon steel, polypropylene, PTFE and other materials are available with connections to suit. For food and pharmaceutical applications units can be designed to comply with stringent hygiene requirements using polished stainless steel and sanitary fittings.

Tank Mixing

Transvac Tank Jet Mixers are a mass momentum exchange device which uses the energy of pressurised liquid to entrain, mix and pump a secondary liquid. The principle is used for many process applications including blending, solids suspension, dilution and heat distribution

In operation, pressurised motive liquid is discharged through the jet nozzle into the suction chamber. The change from pressure energy to kinetic energy (velocity) creates a region of low pressure that entrains liquid from within the process vessel via the open suction ports. The motive and suction liquid streams combine and mix under high shear conditions in the venturi diffuser. The resulting mixture is then discharged into the bulk of the process liquor as a high velocity turbulent jet.

Standard Transvac Tank Jet Mixers entrain 3 parts suction liquid for every 1 part motive liquid with the discharge jet of 4 parts inducing further secondary mixing.

Advantages of Jet Mixers

Tank Jet Mixers for Mixing Varnish
in a Road Tanker

• No moving parts
• No splashing or aerosol created
• Operates at variable depths
• No bridges or bearings used
• No in-tank maintenance needed
• Evenly distributes mixing
• Controllable mixing
• Simple, reliable and robust

Each Tank Jet Mixer is designed to suit the process mixing requirement and single Mixers or a number of mixers mounted on an intank manifold are available. Transvac can offer the basic mixers or a complete system including pipework, pumps and valves.

Materials of construction are chosen to suit the process conditions, common materials include stainless steel, carbon steel, Polypropylene, PVCu, PTFE, and GRP. Hygienic designs are available for the food / pharmaceutical industry.