Pumping Equipment

Pumps

Melbourne, Australia

Four Vaughan chopper pumps supplied to Mt Martha STP for tough digester sludge recirculation

Pump Systems Ltd's local Vaughan Representative in Melbourne, Australia - Metaval Consolidated Pty Ltd, completed a project at South East Water's Mt Martha STP for the supply of four new Vaughan vertical dry pedestal chopper pumps for digester sludge. The Vaughan equipment was sized to replace existing macerators and PD pumps that were high in maintenance becuase of ongoing clogging issues.

The four model PE3P6 pumps were shipped directly to Australia ex-Vaughan Company in the United States. As rag and fibrous material was a known issue at the plant, each pump was fitted with an 18.5kW, 4-pole speed electric motor to provide plenty of chopper power and torque in case of heavy solids loadings. Each pump was also supplied with Vaughan's proprietory designed "flushless" mechanical cartridge seal. The extremely robust and reliable Vaughan seal, which was introduced in 2001 has its own oil chamber, eliminating the need for an external water flushing system.

Vaughan chopper pumps are designed to withstand the toughest applications and are guaranteed not to clog. External adjuster screws behind the pump casing allows the operator to monitor internal cutting clearances in order to maintain premium chopping performance. In addition, by practicing routine maintenance and keeping these clearances as close to factory settings as possible, the wear process inside the pump can effectively be "delayed", saving on spare parts turnover and regular running costs.

View this project at www.chopperpumps.com.au

To view further information on Vaughan Chopper Pumps please click here

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New South Wales, Australia

Vaughan Chopper Pumps solve clarifier underflow clogging problems at large paper mill in New South Wales

Two heavy-duty horizontal Vaughan Chopper Pumps were supplied to a large paper mill in New South Wales, Australia for transferring thick clarifier underflow sludge. The plant was experiencing continual clogging problems with its existing dry-mounted submersible pumps and required a proven and engineered long term solution that would allow the on site wastewater treatment plant to function with minimal downtime.

The two Vaughan model HE4P6CS centrifugal chopper pumps, one duty and one standby, were sized to provide a flow rate of 72 m3/hr each at a Total Head of 7 metres. Fitted with 11kW, 6-pole speed electric motors, the pumps run slowly at around 960 rpm which will help to reduce wear over time. In addition to this, all main components including the chopping impeller, cutter bar, upper cutter and cutter nut are heat treated to a minimum Rockwell 60C hardness for wear and impact resistance. Any suspended solids in the waste stream such as wood chips and fibrous materials are broken down and preconditioned at the pump to eliminate the risk of clogging in system pipework and downstream processes.

View this project at www.chopperpumps.com.au

To view further information on Vaughan Chopper Pumps please click here

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Waikato, New Zealand

Customised horizontal end suction Vaughan Chopper Pump supplied for tricky egg pulp application

For over 50 years, the heavy-duty Vaughan chopper pump has been responsible for solving some of the toughest solids pumping problems in the industry. Recently, Pump Systems Ltd, the Vaughan Authorised Factory Representative for Australia and New Zealand were called upon to offer a customised pump solution for processing egg pulp containing large amounts of abrasive egg shells.

As standard, Vaughan chopper pumps are supplied with a 2-segment cutter bar fitted directly in front of a sharpened chopping impeller. For most industrial and municipal waste applications, this time-tested design has proven extremely effective when dealing with heavy solids and/or rag and other fibrous material that would normally clog other pumps. In fact, this design has been so effective, that every Vaughan chopper pump sold comes with a non-clog guarantee.

This particular application was slightly different in that the egg shells needed to be broken down as small as possible prior to being processed. To achieve this, Pump Systems proposed a Vaughan E-Series model HE3G horizontal chopper pump fitted with a special 4-segment cutter bar. The combination of the 4-segment cutter bar and the HE3G's 4-blade impeller would result in extra points of chopping per revolution and therefore a finer overall chop. In addition to this, the pump would also come with a special EC2 external cutter to pre-chop material as it enters the pump suction.

Not only would the Vaughan chopper pump provide outstanding, non-clog solids handling and chopping performance, but in this case, due to the very abrasive nature of the egg shells, the heat treated and hardened components of the Vaughan chopper pump would also lend itself nicely to the application.

View this project at www.chopperpumps.com.au

To view further information on Vaughan Chopper Pumps please click here

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