In many functions within the oil and gas industry, the chemical trade, and even the food industry, pumps that work reliably and supply excessive efficiency are wanted. At the identical time, they will have to have convincingly low funding costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and secure mannequin that can deal with flow rates of as a lot as 300 l/h for many years. For use in functions with greater circulate charges, the pump skilled from Leonberg, Germany, is now increasing its product vary with two new sizes. In addition to the LCA model, the Ecosmart may also be obtainable within the more powerful LCC and LCD versions in the future. While the LCC model can meter in extra of 264 gallons per hour, Lewa designed the LCD for a move rate of up to 528 gallons per hour. The most permissible operating pressure for each fashions is 50 bar and 600 pounds respectively. The stringent use of similar parts throughout the Ecosmart product household keeps production costs and therefore the ultimate value low. At the same time, a excessive level of security could be guaranteed by specializing in all important design options such because the stress relief valve or the confirmed sandwich diaphragm with steady monitoring. The LCC variant was made available on the finish of 2021 and the LCD mannequin will be obtainable by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow sequence, Lewa has supplied the cheaper Ecosmart pump for a quantity of years. This is mainly as a end result of the fact that though a reliable pump unit is required in quite a few processes, at the identical time comparatively low discharge pressures in the decrease two-digit vary require less advanced pump technology. With the Ecosmart LCA in the single pump version, nevertheless, solely a circulate price of under eighty gallons per hour was beforehand attainable. In order to have the ability to provide the Ecosmart for purposes with greater flow rates, the engineers at Lewa began developing two additional, larger pump variants in 2019. The goal was to scale up the Ecosmart to bigger applications with the proven safety stage and high quality Lewa components without significantly growing the low investment price typical for this pump sequence. This was to be achieved by a consistent modular principle within the pump collection, as nicely as a strict concentrate on the essential features and features. The specifications additionally demanded the usual Lewa suitability for unrestricted continuous operation over many years. Options for integrating the pumps into automated techniques through analog management alerts or bus methods are also a matter in fact.
Lewa Ecosmart LCC3 on the check stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the requirements for the conveying capacity needed to be applied constructively. Larger plunger diameters were selected for the smaller LCC variant, so that greater than 264 gallons per hour can be conveyed as a substitute of less than eighty gallons. In the case of the extra powerful LCD model, the engineers additionally decided to increase the stroke length so that a most circulate fee of 528 gallons per hour might be achieved. Both pump varieties can work towards a maximum working pressure of 50 bar. As with all hydraulically actuated diaphragm metering pumps, maximum pressures are achieved with smaller plunger diameters.
Just as important as the efficiency of the pump was the operational reliability typical of Lewa acquainted from different pump collection. For this function, particular person, important features such as the built-in pressure security valve or the sandwich diaphragm have been taken over from the Ecoflow models. The individually adjustable stress safety valve ensures that sudden overpressure within the pump does not damage the diaphragm or pump drive. The diaphragm safety system DPS, whose important part is a return spring for the diaphragm, additionally ensures that the PTFE sandwich diaphragm at all times works in the right place. It cannot be overstretched or damaged during start-up. Thus, the pump is protected against operating errors or upset operating situations. Finally, the usual diaphragm monitoring system checks the condition of the diaphragm and warns plant operators immediately if there could be any harm. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security at all times, particularly in sensitive areas with toxic fluids. However, diaphragm monitoring isn’t used because Lewa diaphragms of this series usually obtain service lives of several years – even underneath full load and steady operation.
A key level was to keep manufacturing costs within a similar range to the small LCA variant, thereby creating enticing market costs for purposes with less demanding necessities and decrease working strain. To do so, the design of the 2 new pump sizes wanted to integrate parts which may be as identical or a minimal of similar as potential so as to avoid excessive manufacturing prices. In this way, the Lewa engineers have been in a position to efficiently implement the frequent components strategy that had already been practiced many occasions.
Pump customers additionally profit from this intelligent modular principle, as many wear parts can be used throughout pump varieties. This significantly simplifies the spare elements stock. At the identical time, the modular principle additionally permits particular person adjustments to the respective utility. For เกจวัดแรงดันปั๊มลม , stroke frequencies or plunger diameters can be chosen individually. The basis for this is the M900 pump head, which is already used in the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cupboard.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility additionally offers advantages for plant construction: It allows the Ecosmart pump to be oriented either 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 particularly compact format. In many pumps, the pump head is on the same axis because the plunger, which frequently results in bulky pump dimensions. The 90-degree orientation avoids this with the brand new models. This benefit is achieved by the extremely compact and fully newly developed, cost-effective diaphragm drive.
In order to ensure the long service life typical of Lewa pumps, solely high-quality, robust materials are used within the LCC and LCD variations. Toxic and abrasive substances can stress the pump considerably and so a selection of supplies can be used on the moist finish, that are additionally efficiently used in the high-pressure variants of the Ecoflow series. Many high-quality components from the Ecoflow collection are additionally used for the drive models, employing the frequent parts technique. The result is robustness and sturdiness that’s unusual on this pump class. In addition, all Ecosmart pumps have been designed with a single oil tub, which is used for both the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra complicated lubrication through two separate oil methods and results in a simpler design, which not solely facilitates operation but also reduces maintenance work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the U.S. industry commonplace for metering pumps API 675, ensuring almost limitless usage for quite a few demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents within the chemical trade, pumps are needed that on the one hand meet the highest specification necessities and then again are nonetheless cost-effective. Here, the Ecosmart pump with its larger performance is prepared to meet exactly these necessities, because it has been precisely engineered for functions in the decrease strain range up to 50 bar (600 pounds). The larger versions of the Ecosmart pump are also appropriate for industrial water treatment, corresponding to in seawater desalination or industrial cooling circuits. What counts right here above all is compactness and cost-effective design, which the complete Lewa Ecosmart series fulfills because of its revolutionary design principle.
Before the model new pump variants are available to customers, a quantity of in depth exams will be carried out. They will make sure that the units also meet the excessive inside firm requirements for reliability and performance in operational follow. They embody, on the one hand, steady load checks of as a lot as several tens of hundreds of hours and, then again, overload exams. In the latter, the pump is run constantly at as a lot as 20 % above most stress to further validate its robustness. Special exams are carried out in heated cupboards to proof that the pumps additionally perform completely beneath excessive ambient conditions. After successful completion of all exams and last adjustments, the Ecosmart version LCC is now in the marketplace, the LCD model will comply with in mid-2022.
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