- Far better control in most applications, including pH dosing
By selecting Qdos pumps for their capable and versatile process control, specialist skid builder PolyGhost is achieving competitive gains that include higher levels of accuracy and enhanced sustainability through reduced chemical use.
The need to build skids is commonplace in applications such as polymer dosing, a process employed to eliminate unwanted solid particles from liquid streams in sectors that include water and wastewater, 矿业, 制药, 纸浆和纸张, 和饮料. Skid builders serving these industries are finding that the enhanced process control offered by Qdos蠕动计量泵 from Watson-Marlow Fluid Technology Group (WMFTG) is paying significant dividends.
《威尼斯vns08866》就是一个很好的例子. 总部设在波多黎各, the company has applied its name to their recently 2020 patented technology that continuously blends multiple chemicals, additives and liquid polymers inside a mechanical mixing chamber.
PolyGhost offers its skids using Qdos peristaltic pumps, as they do not require regular and expensive maintenance, 并提供高水平的过程控制. When clients need full control of polymer blending for applications such as the optimisation of sludge dewatering or separation processes, PolyGhost solutions meet these requirements by integrating the company’s PolySurf+ software with Qdos Universal pumps.
这种水平的控制有助于减少聚合物的消耗, 增加蛋糕干燥, 提高固体复苏, 降低能耗，降低维护成本.
作为典型序列的一部分，为一个PolyGhost打滑, once the operator verifies that the water control valve is open and the pump dose rate has been set, 开始按钮被按下. Here, the dilution water solenoid valve receives a PLC signal to open. This dilution water starts flowing through the system, with flow meter readings sent back to the PLC. 如果水流通过系统是正确的, after 20 seconds the PLC sends a signal to start the polymer blending system. 又过了15秒, the PLC sends a signal to the Qdos Universal pump to begin dosing at the specified rate.
PolyGhost uses the input/output connections on the interface of the Qdos Universal+ to control the pump from the panel of the polymer blending system, 允许运行/停止命令和流量调整.
Qdos users can determine the level of control as the pumps come in five variants: from manual (manual control via keypad and display for basic tasks), to the Universal+ (ultimate flexibility for automatic and manual control with five configurable outputs) chosen by PolyGhost.
The Universal+ is proving increasingly popular as it offers remote feedback capability, 通过4-20 mA输出通知用户其速度.
通常, the required accuracy of PolyGhost applications is between 98 and 100%, a suitably high level that helps customers to save money. 根据公司的说法, 在液体聚合物混合任务中, a client that uses diaphragm pumps is needlessly losing money. Every time PolyGhost visits a plant, it first determines the type of pump in use. 如果客户正在部署隔膜泵, PolyGhost says it can optimise the user’s process with Qdos units, guaranteeing savings of at least 30% in polymer consumption, 有时高达65%.
A major advantage of the control capability provided by Qdos pumps is a reduction in chemical use through higher accuracy metering. Qdos provides accurate and linear flow even when process 条件 vary. Users can achieve accuracy of ±1%, alongside repeatability (precision) of ±0.5%，拒绝高达20,000:1.
Taking advantage of fully automatic control via a pump such as the Qdos Universal+ helps companies like PolyGhost to ensure the reliability and repeatability of dosing accuracy. 反过来, while chemical savings accrue thanks to the avoidance of overdosing, it is also possible to avert any potential for under-dosing, which is hugely significant in sectors such as water and wastewater treatment.
当然, both peristaltic and diaphragm pump types can offer 100% dosing accuracy, but if a pump needs additional components in order to operate correctly, 如隔膜泵所需的辅助装置, dosing accuracy will start to decrease because of operational and mechanical variables.
PolyGhost recommends Qdos as its design does not require additional components to operate correctly. In combination with the polymer savings driven by enhanced process control, some of PolyGhost’s clients achieve payback in a matter of months.