Affordable Even at Higher Flow Rates

In many functions in the oil and fuel trade, the chemical business, or even the meals business, pumps that work reliably and provide excessive performance are wanted. At the same time, they must have convincingly low funding prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and protected model that may handle flow rates of as much as 300 l/h for a quantity of years. For use in functions with larger circulate charges, the pump expert from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA version, the Ecosmart may also be out there within the extra highly effective LCC and LCD variations in the future. While the LCC model can meter in excess of 264 gallons per hour, Lewa designed the LCD for a circulate fee of as much as 528 gallons per hour. The most permissible operating strain for each models is 50 bar and 600 pounds respectively. The stringent use of similar elements within the Ecosmart product household retains manufacturing costs and subsequently the final price low. At the same time, a excessive degree of safety may be guaranteed by specializing in all essential design features such as the pressure aid valve or the proven sandwich diaphragm with continuous monitoring. The LCC variant was made available at the finish of 2021 and the LCD mannequin will be obtainable by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow collection, Lewa has supplied the cheaper Ecosmart pump for a quantity of years. This is mainly due to the truth that although a reliable pump unit is required in numerous processes, on the similar time relatively low discharge pressures in the decrease two-digit vary require less complicated pump technology. With the Ecosmart LCA in the single pump model, nonetheless, only a move price of under 80 gallons per hour was beforehand possible. In order to be able to supply the Ecosmart for applications with higher circulate charges, the engineers at Lewa started growing two extra, bigger pump variants in 2019. The goal was to scale up the Ecosmart to larger purposes with the proven safety stage and top quality Lewa parts with out considerably increasing the low investment value typical for this pump sequence. This was to be achieved by a constant modular principle within the pump sequence, in addition to a strict concentrate on the important capabilities and options. The specifications additionally demanded the standard Lewa suitability for unrestricted continuous operation over a few years. Options for integrating the pumps into automated techniques via analog management signals or bus techniques are also a matter of course.
Lewa Ecosmart LCC3 on the take a look at stand.
First of all, the requirements for the conveying capacity had to be applied constructively. Larger plunger diameters had been chosen for the smaller LCC variant, in order that more than 264 gallons per hour could be conveyed as an alternative of less than 80 gallons. In the case of the more highly effective LCD model, the engineers additionally determined to extend the stroke length so that a maximum flow price of 528 gallons per hour could probably be achieved. Both pump varieties can work against a maximum working pressure of fifty bar. As with all hydraulically actuated diaphragm metering pumps, maximum pressures are achieved with smaller plunger diameters.
Just as necessary as the performance of the pump was the operational reliability typical of Lewa familiar from other pump series. For this objective, individual, important options such as the integrated stress safety valve or the sandwich diaphragm have been taken over from the Ecoflow models. The individually adjustable pressure safety valve ensures that sudden overpressure in the pump does not damage the diaphragm or pump drive. The diaphragm protection system DPS, whose essential component is a return spring for the diaphragm, additionally ensures that the PTFE sandwich diaphragm always works in the proper place. It cannot be overstretched or broken during start-up. Thus, the pump is protected against working errors or upset working situations. Finally, the standard diaphragm monitoring system checks the situation of the diaphragm and warns plant operators immediately if there might be any damage. This reliably prevents cross-contamination between the pump and the piping system and ensures operational safety at all times, especially in sensitive areas with toxic fluids. However, diaphragm monitoring is never used because Lewa diaphragms of this collection normally obtain service lives of several years – even underneath full load and steady operation.
A key point was to keep production costs inside a similar vary to the small LCA variant, thereby creating enticing market prices for purposes with much less demanding requirements and lower working pressure. To do so, the design of the two new pump sizes wanted to integrate components that are as equivalent or at least comparable as potential in order to avoid high manufacturing prices. In this manner, the Lewa engineers were in a place to efficiently implement the frequent elements strategy that had already been practiced many instances.
Pump customers additionally benefit from this clever modular principle, as many wear elements can be used throughout pump sorts. ร้านซ่อมเครื่องวัดความดันโลหิต simplifies the spare parts stock. At the identical time, the modular precept additionally permits particular person changes to the respective application. For instance, stroke frequencies or plunger diameters can be chosen individually. The foundation for that is the M900 pump head, which is already used in the LCA variant and within the Ecoflow program.
Lewa Ecosmart LCC in heated cupboard.
The pump’s flexibility also offers advantages for plant building: It allows the Ecosmart pump to be oriented both vertically or horizontally, making it simpler to integrate the unit into systems with limited or confined spaces. In addition, the pump head of the new LCC and LCD fashions is aligned at right angles to the plunger axis, leading to a particularly compact format. In many pumps, the pump head is on the identical axis because the plunger, which often leads to cumbersome pump dimensions. The 90-degree orientation avoids this with the model new models. This advantage is achieved by the extremely compact and utterly newly developed, cost-effective diaphragm drive.
In order to ensure the long service life typical of Lewa pumps, only high-quality, sturdy materials are used in 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 wet end, which 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 items, employing the widespread elements strategy. The result is robustness and sturdiness that’s uncommon 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 more complex lubrication by way of two separate oil systems and results 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 trade normal for metering pumps API 675, guaranteeing practically limitless usage for quite a few demanding processes in a extensive range of industries.
For example, when metering solvents within the chemical trade, pumps are needed that on the one hand meet the very best specification necessities and on the other hand are nonetheless cost-effective. Here, the Ecosmart pump with its greater efficiency is in a position to meet precisely these requirements, as it has been precisely engineered for purposes within the lower pressure range up to 50 bar (600 pounds). The larger variations of the Ecosmart pump are also suitable for industrial water treatment, corresponding to in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the complete Lewa Ecosmart series fulfills thanks to its progressive design precept.
Before the brand new pump variants are available to customers, a variety of extensive checks will be carried out. They will make certain that the models also meet the high internal company necessities for reliability and efficiency in operational follow. They embrace, on the one hand, steady load checks of up to a number of tens of hundreds of hours and, then again, overload exams. In the latter, the pump is run continuously at up to 20 p.c above maximum stress to additional validate its robustness. Special checks are carried out in heated cupboards to proof that the pumps additionally carry out completely underneath excessive ambient circumstances. After profitable completion of all exams and final adjustments, the Ecosmart model LCC is now available on the market, the LCD model will observe in mid-2022.

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