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In many applications within the oil and fuel industry, the chemical industry, and even the food trade, pumps that work reliably and provide high performance are needed. At the identical time, they will have to have convincingly low funding costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and secure model that may deal with flow rates of as a lot as 300 l/h for many years. For use in purposes with greater move charges, the pump skilled from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA model, the Ecosmart may also be available in the extra powerful LCC and LCD variations sooner or later. While the LCC mannequin can meter in excess of 264 gallons per hour, Lewa designed the LCD for a circulate fee of up to 528 gallons per hour. The maximum permissible working pressure for each models is 50 bar and 600 pounds respectively. The stringent use of comparable components throughout the Ecosmart product household keeps production costs and therefore the ultimate price low. At the identical time, a high level of security could be guaranteed by focusing on all essential design features such because the strain reduction valve or the confirmed sandwich diaphragm with continuous monitoring. The LCC variant was made out there at the finish of 2021 and the LCD model shall be out there by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow sequence, Lewa has offered the less expensive Ecosmart pump for several years. This is especially due to the reality that although a reliable pump unit is required in numerous processes, at the similar time relatively low discharge pressures in the lower two-digit vary require much less complex pump technology. With the Ecosmart LCA in the single pump model, nonetheless, solely a circulate fee of beneath eighty gallons per hour was beforehand possible. In order to have the power to provide the Ecosmart for applications with greater circulate charges, the engineers at Lewa began developing two further, larger pump variants in 2019. The goal was to scale up the Ecosmart to bigger purposes with the proven security stage and high quality Lewa parts with out considerably increasing the low investment value typical for this pump sequence. This was to be achieved by a consistent modular principle within the pump series, as well as a strict concentrate on the important features and options. The specs additionally demanded the same old Lewa suitability for unrestricted steady operation over a few years. Options for integrating the pumps into automated methods via analog management signals or bus systems are additionally a matter in fact.
เกจวัดแรงดันน้ำประปาราคา on the check stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the necessities for the conveying capability needed to be applied constructively. Larger plunger diameters have been chosen for the smaller LCC variant, so that greater than 264 gallons per hour could be conveyed as a substitute of lower than 80 gallons. In the case of the more powerful LCD model, the engineers additionally determined to increase the stroke size so that a most flow rate of 528 gallons per hour could possibly be achieved. Both pump types can work towards a most operating pressure of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as important as the efficiency of the pump was the operational reliability typical of Lewa familiar from other pump collection. For this objective, particular person, important features such as the integrated strain security valve or the sandwich diaphragm have been taken over from the Ecoflow models. The individually adjustable stress security valve ensures that sudden overpressure in the pump doesn’t injury the diaphragm or pump drive. The diaphragm protection system DPS, whose essential component is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the best place. It cannot be overstretched or broken during start-up. Thus, the pump is protected against working errors or upset operating situations. Finally, the usual diaphragm monitoring system checks the condition of the diaphragm and warns plant operators instantly if there might be any injury. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security always, particularly in delicate areas with poisonous fluids. However, diaphragm monitoring is rarely used as a result of Lewa diaphragms of this collection often achieve service lives of a number of years – even under full load and continuous operation.
A key point was to keep production prices inside a similar range to the small LCA variant, thereby creating attractive market costs for functions with much less demanding requirements and lower working strain. To achieve this, the design of the 2 new pump sizes wanted to combine parts which are as equivalent or at least comparable as possible so as to keep away from high manufacturing costs. In this way, the Lewa engineers had been able to successfully implement the common elements technique that had already been practiced many occasions.
Pump users additionally benefit from this clever modular principle, as many put on elements can be utilized throughout pump sorts. This significantly simplifies the spare components stock. At the same time, the modular precept also permits particular person adjustments to the respective application. For instance, stroke frequencies or plunger diameters can be chosen individually. The foundation for this is the M900 pump head, which is already used in the LCA variant and within the Ecoflow program.
Lewa Ecosmart LCC in heated cupboard.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility also provides advantages for plant construction: It allows the Ecosmart pump to be oriented both vertically or horizontally, making it simpler to combine the unit into systems with restricted or confined spaces. In addition, the pump head of the new LCC and LCD models is aligned at proper angles to the plunger axis, resulting in a very compact format. In many pumps, the pump head is on the identical axis as the plunger, which regularly leads to bulky pump dimensions. The 90-degree orientation avoids this with the new fashions. This advantage is achieved by the extraordinarily compact and utterly newly developed, cost-effective diaphragm drive.
In order to ensure the lengthy service life typical of Lewa pumps, solely high-quality, sturdy materials are used within the LCC and LCD versions. Toxic and abrasive substances can stress the pump considerably and so quite a lot of materials can be used on the moist end, which are additionally successfully used within the high-pressure variants of the Ecoflow series. Many high-quality components from the Ecoflow collection are additionally used for the drive units, using the frequent components strategy. The result is robustness and sturdiness that is uncommon on this pump class. In addition, all Ecosmart pumps have been designed with a single oil tub, which is used for each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra advanced lubrication via two separate oil methods and ends in a much less complicated design, which not only facilitates operation but in addition reduces maintenance work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the united states industry normal for metering pumps API 675, ensuring nearly unlimited utilization for numerous demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For example, when metering solvents within the chemical trade, pumps are needed that on the one hand meet the best specification requirements and then again are nonetheless cost-effective. Here, the Ecosmart pump with its greater performance is able to meet precisely these necessities, because it has been exactly engineered for functions within the lower pressure vary up to 50 bar (600 pounds). The bigger versions of the Ecosmart pump are also appropriate for industrial water therapy, corresponding to in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the whole Lewa Ecosmart collection fulfills thanks to its progressive design precept.
Before the model new pump variants can be found to clients, numerous intensive exams shall be carried out. They will ensure that the models additionally meet the high internal firm requirements for reliability and performance in operational practice. They embody, on the one hand, steady load checks of as a lot as a quantity of tens of thousands of hours and, then again, overload tests. In the latter, the pump is run continuously at up to 20 % above most stress to further validate its robustness. Special checks are carried out in heated cupboards to proof that the pumps additionally perform completely underneath excessive ambient situations. After successful completion of all exams and ultimate adjustments, the Ecosmart version LCC is now available on the market, the LCD mannequin will follow in mid-2022.
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