Affordable Even at Higher Flow Rates

In many applications within the oil and gas business, the chemical industry, and even the food industry, pumps that work reliably and supply high efficiency are needed. At the identical time, they will have to have convincingly low investment prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and protected mannequin that may handle flow rates of up to 300 l/h for a number of years. For use in functions with higher circulate rates, the pump skilled from Leonberg, Germany, is now expanding its product range with two new sizes. In addition to the LCA version, the Ecosmart may also be obtainable within the more highly effective LCC and LCD variations sooner or later. While the LCC mannequin can meter in extra of 264 gallons per hour, Lewa designed the LCD for a flow fee of as much as 528 gallons per hour. เกจวัดแรงดูด working pressure for both fashions is 50 bar and 600 pounds respectively. The stringent use of similar elements inside the Ecosmart product household retains manufacturing costs and subsequently the ultimate worth low. At the same time, a high degree of security could be guaranteed by focusing on all essential design features such as the strain reduction valve or the confirmed sandwich diaphragm with continuous monitoring. The LCC variant was made out there at the end of 2021 and the LCD mannequin might be out there by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow collection, Lewa has supplied the inexpensive Ecosmart pump for several years. This is especially as a end result of the fact that although a dependable pump unit is required in numerous processes, on the same time relatively low discharge pressures in the lower two-digit vary require much less complicated pump expertise. With the Ecosmart LCA within the single pump version, nevertheless, only a circulate price of under 80 gallons per hour was beforehand possible. In order to have the power to supply the Ecosmart for applications with greater flow charges, the engineers at Lewa began creating two further, bigger pump variants in 2019. The goal was to scale up the Ecosmart to larger purposes with the confirmed safety stage and prime quality Lewa components without considerably increasing the low funding price typical for this pump sequence. This was to be achieved by a constant modular precept within the pump series, in addition to a strict concentrate on the important capabilities and options. The specifications also demanded the usual Lewa suitability for unrestricted continuous operation over many years. Options for integrating the pumps into automated methods via analog control signals or bus techniques are additionally a matter in fact.
Lewa Ecosmart LCC3 on the check stand.
First of all, the requirements for the conveying capacity needed to be applied constructively. Larger plunger diameters were chosen for the smaller LCC variant, so that greater than 264 gallons per hour may be conveyed as a substitute of less than eighty gallons. In the case of the more powerful LCD model, the engineers also decided to extend the stroke size so that a maximum circulate fee of 528 gallons per hour might be achieved. Both pump sorts can work towards a maximum operating stress of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as necessary because the performance of the pump was the operational reliability typical of Lewa familiar from other pump series. For this objective, individual, important options such because the integrated stress safety valve or the sandwich diaphragm were taken over from the Ecoflow fashions. The individually adjustable pressure safety valve ensures that sudden overpressure within the pump doesn’t damage the diaphragm or pump drive. The diaphragm safety system DPS, whose essential part 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 throughout start-up. Thus, the pump is protected towards working errors or upset operating circumstances. Finally, the usual diaphragm monitoring system checks the condition of the diaphragm and warns plant operators immediately if there’s 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 rarely used because Lewa diaphragms of this sequence usually achieve service lives of several years – even underneath full load and continuous operation.
A key point was to keep production prices inside an analogous vary to the small LCA variant, thereby creating attractive market prices for functions with less demanding necessities and lower operating pressure. To accomplish that, the design of the two new pump sizes wanted to integrate components which may be as equivalent or at least similar as potential so as to keep away from excessive manufacturing prices. In this way, the Lewa engineers have been capable of efficiently implement the frequent elements strategy that had already been practiced many times.
Pump users additionally profit from this clever modular principle, as many wear elements can be used across pump sorts. This considerably simplifies the spare components inventory. At the same time, the modular precept also permits particular person changes to the respective software. For example, stroke frequencies or plunger diameters can be chosen individually. The foundation for this is the M900 pump head, which is already used within the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
The pump’s flexibility additionally offers advantages for plant building: It permits the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to integrate the unit into techniques with limited or confined areas. In addition, the pump head of the brand new LCC and LCD models is aligned at proper angles to the plunger axis, leading to a particularly compact format. In many pumps, the pump head is on the identical axis as the plunger, which frequently leads to cumbersome pump dimensions. The 90-degree orientation avoids this with the new models. This benefit is achieved by the extremely compact and utterly newly developed, cost-effective diaphragm drive.
In order to make sure the lengthy service life typical of Lewa pumps, only high-quality, sturdy supplies are used in the LCC and LCD versions. Toxic and abrasive substances can stress the pump considerably and so a big selection of supplies can be used on the moist 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, using the common components strategy. The result is robustness and sturdiness 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 complicated lubrication via two separate oil methods and ends in a simpler design, which not solely facilitates operation but in addition reduces upkeep work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the U.S. industry standard for metering pumps API 675, ensuring practically unlimited usage for quite a few demanding processes in a variety of industries.
For example, when metering solvents within the chemical industry, pumps are wanted that on the one hand meet the very best specification requirements and on the other hand are nonetheless cost-effective. Here, the Ecosmart pump with its higher performance is prepared to meet exactly these necessities, as it has been exactly engineered for purposes within the decrease pressure range as a lot as 50 bar (600 pounds). The bigger variations of the Ecosmart pump are additionally appropriate for industrial water treatment, similar to in seawater desalination or industrial cooling circuits. What counts right here above all is compactness and cost-effective design, which the entire Lewa Ecosmart collection fulfills because of its progressive design precept.
Before the model new pump variants can be found to prospects, numerous intensive exams shall be carried out. They will be positive that the units also meet the high inner firm requirements for reliability and performance in operational apply. They embrace, on the one hand, continuous load checks of as a lot as several tens of thousands of hours and, however, overload tests. In the latter, the pump is run repeatedly at up to 20 p.c above maximum pressure to additional validate its robustness. Special checks are carried out in heated cabinets to proof that the pumps additionally carry out completely under extreme ambient situations. After successful completion of all exams and ultimate changes, the Ecosmart version LCC is now available on the market, the LCD model will comply with in mid-2022.

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