Rotary Lobe Pump as cellular wheel sluice
Rotary lobe pump as cellular wheel sluice
An Australian mining company was looking for a solution for a controlled flow of thickened sludge containing fine pollutants from a sludge pool. Once the shut-off valve was open, the customer wanted to achieve a steady discharge of 1,000 liters per hour. They wanted to prevent too much sludge flowing out of the pool.
To ensure the sludge could be discharged in doses, the mining company decided to use a Boerger Rotary Lobe Pump. The customer was impressed with the pump's resistance to solids and the adjustable speed and ease of maintenance of the Boerger Rotary Lobe Pump.
A stainless steel hopper was fitted under the sludge pool on the suction side which leads to the Boerger Rotary Lobe Pump functioning as a cellular wheel sluice. The Rotary Lobe Pump operates at a speed of 46 rpm. The pump's mechanical seal can be relieved of any sand particles or sediment with the seal flushing process. As the sludge is slightly alkaline, the pump and medium wetted parts of the valve are made of stainless steel.
|Börger||Rotary Lobe Pump|
|Medium||Thickened alkaline sludge|
|Rated capacity||1 m³/h (4.4 usgpm/h)|
A civil engineering company increasingly uses trenchless installation technology. This special technology allows pipes, electrical cables etc to be installed without having to dig trenches. One company specializing in this technology works with the horizontal directional drilling (HDD) method.
A horizontal flushing bore is made in the ground which can be controlled using modern detection technology. Flushing nozzles are attached to the drill head. Bentonite is then fed into the hole through the nozzles. The Bentonite flushes the bore hole to stabilize the bore channel and cool the drill head.
The horizontal flushing bore rig is installed on the company's operation vehicle which also accommodates a Börger Rotary Lobe Pump for pumping the bentonite from the tank to the drill head. The plant engineer emphasized the need for a pump with a long service life, high resistance to wear and one that is very user-friendly in the event of maintenance. The plant engineering company and their customer are highly satisfied with the Börger Rotary Lobe Pump. They have since installed over 100 Boerger Rotary Lobe Pumps in horizontal flushing bore rigs.
|Börger||Rotary Lobe Pump|
|Rated capacity||25 m³/h (110 usgpm/h)|
|Pressure||4 bar (58 psi)|
A manufacturer of wind turbines uses three Boerger Rotary Lobe Pumps for conveying impregnating resins. Resin is used for sealing certain components (rotor and stator parts, windings). The Boerger pumps transfer the resin from a storage tank to an impregnating vat.
The components that need to be sealed are heated and immersed in the impregnating vat of resin. The heat then causes the resin to harden on the heated components. After impregnating, the components are removed from the vat. To prevent the remaining resin from hardening in the vat, it needs to be pumped back to the storage tank as quickly as possible.
When constructing the plant, the wind turbine manufacturer sought a pump which would be able to convey the highly viscous resin, be low on space and which could achieve a very high pump output if the impregnating vat had to be emptied in an emergency. The customer decided on three Boerger Rotary Lobe Pumps. The pumps were assembled vertically to prevent any medium deposits in the pipes.
|Börger||Rotary Lobe Pumps|
|Viscosity||max. 15,000 mPas|
|Rated capacity||40 m³/h (176 usgpm/h)|
|Pressure||6 bar (87 psi)|
|Speed||50 - 100 rpm|
In the production of gelatine, large particles of bone are fed into a warm acid (ph ~4) in close distribution as a liquid suspension. To prevent problems at a later stage of processing, this must take place extremely gently. A Boerger Rotary Lobe Pump in stainless steel and with short seal lines is perfectly suited to deal with these requirements.
|Börger||Rotary lobe pump|
|Rated capacity||8 m³/h (35.2 usgpm/h)|
|Pressure||2 bar (29 psi)|