: Gummed pump for waste-water pump station successful - Pool pumps

10-20-2003
	Gummed pump for waste-water pump station successful (Herborn/Hessen) The Hessian pump producer seems to have found the solution for hardest requests, into fecal receiving stations, to have in sewerage purification plants. The aggressive, sandy mud in this receiving tanks causes by conventional pumps extremely high wear. Cases and running wheel don\'t withstand this load for a too long time. Near Berlin runes the Herborner Pumpenfabrik since January 2001 a duration test with a gummed pump in a purification plant. Interim balance was pulled now after a year -- and excellent results be found. The Berlin purification station worked, as many others too , with a submersible pump in the sewerage tank. Due to the high concentration from sandy components of the water at the ground of the tank, in the sewerage receiving station, the pump was approx. one metre above the ground installed. The life time of the pump was increased, but the mineral components, being deposited at the ground of the tank, hat at least manually to by removed twice a year. Cleaning actions could for technical reasons only on the weekend take place. The problem was brought to the Herborner Pumpenfabrik. This installed an UNIVERS-T from the assortment for waste-water pumps. Free-run- wheel, pumps cases and lids became protection rubber coating, to make ground mounting possible, this to prevent new depositions. As an alternative a pump made of high-grade steel was thought off. The acquisition caressed were opposite the present solution more than double so highly The test operation showed clearly, how hart the pump in the facal receiving station has to work. First wear showed the rubber coating after five months. The consistency of the rubber was too hard. „The sandy quotas of the dirty water has these protective coating really rubbed off,“ explains Gerd Gomoll, project manager of the Herborner Pumpenfabrik, the situation. The rubber mixer was changed. This is critical between toughness, hardness and elasticity, according to the company. The right formula was found obvious in January 2001, because the pump has since then proved itself in non-stop operation. At a thorough inspection, a few weeks ago, no unusual wear was found. In Herborn and Storkow, one is therefore sure to have found an alternative with moderate costs to high-grade steel pumps or the laber -intensive cleaning actions.