Affordable Even at Higher Flow Rates

In many functions in the oil and gas industry, the chemical business, or even the food business, pumps that work reliably and supply high performance are needed. At the identical time, they must have convincingly low funding prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has offered a cost-attractive and protected model that can deal with move rates of as much as 300 l/h for a couple of years. For use in functions with higher move charges, the pump professional from Leonberg, Germany, is now expanding its product vary with two new sizes. In addition to the LCA version, the Ecosmart may even be available in the extra highly effective 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 price of as a lot as 528 gallons per hour. The maximum permissible working strain for both models is 50 bar and 600 kilos respectively. The stringent use of similar elements inside the Ecosmart product household retains manufacturing prices and due to this fact the final value low. At the same time, a excessive stage of safety could be assured by specializing in all essential design features such as the pressure relief valve or the confirmed sandwich diaphragm with steady monitoring. The LCC variant was made available at the end of 2021 and the LCD model will be obtainable by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow collection, Lewa has offered the inexpensive Ecosmart pump for several years. This is principally as a result of the truth that though a reliable pump unit is required in quite a few processes, on the same time relatively low discharge pressures within the decrease two-digit vary require much less advanced pump technology. With the Ecosmart LCA within the single pump version, nonetheless, only a flow rate of under 80 gallons per hour was beforehand attainable. In order to be able to offer the Ecosmart for functions with larger flow rates, the engineers at Lewa started developing two additional, bigger pump variants in 2019. The purpose was to scale up the Ecosmart to bigger functions with the confirmed security level and prime quality Lewa parts with out significantly growing the low investment cost typical for this pump collection. This was to be achieved by a constant modular principle throughout the pump collection, in addition to a strict give attention to the essential functions and options. The specifications additionally demanded the standard Lewa suitability for unrestricted continuous operation over many years. Options for integrating the pumps into automated methods through analog control signals or bus methods are additionally a matter of course.
Lewa Ecosmart LCC3 on the check stand.
First of all, the requirements for the conveying capability had to be implemented constructively. Larger plunger diameters were 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 highly effective LCD version, the engineers also determined to extend the stroke length so that a most move price of 528 gallons per hour could be achieved. Both pump varieties can work against a maximum working strain of fifty bar. As with all hydraulically actuated diaphragm metering pumps, maximum pressures are achieved with smaller plunger diameters.
Just as essential as the efficiency of the pump was the operational reliability typical of Lewa familiar from other pump sequence. For this objective, individual, essential options such because the built-in pressure security valve or the sandwich diaphragm were taken over from the Ecoflow models. The individually adjustable strain security valve ensures that sudden overpressure in the pump doesn’t injury the diaphragm or pump drive. The diaphragm protection system DPS, whose essential part is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the best place. It can’t be overstretched or damaged during start-up. Thus, the pump is protected against operating errors or upset working situations. Finally, the usual diaphragm monitoring system checks the situation of the diaphragm and warns plant operators instantly if there is any injury. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security always, especially in delicate areas with toxic fluids. However, diaphragm monitoring is never used because Lewa diaphragms of this series normally achieve service lives of several years – even beneath full load and steady operation.
A key point was to maintain manufacturing prices within an analogous vary to the small LCA variant, thereby creating enticing market prices for purposes with less demanding requirements and decrease operating strain. To do so, the design of the 2 new pump sizes wanted to combine components that are as identical or no much less than comparable as potential to find a way to keep away from high manufacturing costs. In this manner, the Lewa engineers were capable of successfully implement the common components strategy that had already been practiced many times.
Pump users also benefit from this clever modular precept, as many wear elements can be utilized across pump varieties. This significantly simplifies the spare components stock. At the identical time, the modular principle also allows individual changes to the respective application. For instance, stroke frequencies or plunger diameters may be chosen individually. The basis for that is the M900 pump head, which is already used in the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
The pump’s flexibility also presents advantages for plant building: It permits 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, leading to a very compact format. In many pumps, the pump head is on the same axis because the plunger, which often results in cumbersome pump dimensions. The 90-degree orientation avoids this with the new models. This benefit is achieved by the extraordinarily compact and completely newly developed, cost-effective diaphragm drive.
In order to make sure the long service life typical of Lewa pumps, solely high-quality, robust supplies are used in the LCC and LCD variations. Toxic and abrasive substances can stress the pump considerably and so a selection of materials can be used on the wet end, which are additionally efficiently used within the high-pressure variants of the Ecoflow collection. Many high-quality elements from the Ecoflow sequence are also used for the drive models, employing the common elements technique. The result’s robustness and durability that is unusual on this pump class. In addition, all Ecosmart pumps have been designed with a single oil bathtub, which is used for both the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the more complex lubrication by way of two separate oil methods and leads to an easier design, which not only facilitates operation but also reduces maintenance work.
Last however not least, the new LCC and LCD versions—like the LCA—comply with the U.S. business standard for metering pumps API 675, making certain practically unlimited usage for numerous demanding processes in a variety of industries.
For instance, when metering solvents within the chemical trade, pumps are needed that on the one hand meet the very best specification requirements and however are still cost-effective. Here, the Ecosmart pump with its larger efficiency is able to meet precisely these requirements, because it has been precisely engineered for purposes in the lower stress vary as a lot as 50 bar (600 pounds). The larger variations of the Ecosmart pump are also appropriate for industrial water treatment, such as in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the entire Lewa Ecosmart collection fulfills due to its progressive design principle.
Before เกรดวัดแรงดัน are available to prospects, numerous extensive checks might be carried out. They will be positive that the items additionally meet the excessive inner firm requirements for reliability and performance in operational practice. They embrace, on the one hand, steady load tests of up to several tens of hundreds of hours and, then again, overload exams. In the latter, the pump is run repeatedly at as a lot as 20 percent above most strain to further validate its robustness. Special exams are carried out in heated cupboards to proof that the pumps additionally perform completely underneath extreme ambient situations. After successful completion of all checks and final changes, the Ecosmart version LCC is now in the marketplace, the LCD mannequin will observe in mid-2022.

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