In many applications within the oil and fuel business, the chemical industry, and even the food trade, pumps that work reliably and provide high performance are needed. At the identical time, they will must have convincingly low investment costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and protected mannequin that can handle flow rates of as much as 300 l/h for a few years. For use in applications with larger flow 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 will also be out there in the extra powerful LCC and LCD versions in the future. While the LCC model can meter in excess of 264 gallons per hour, Lewa designed the LCD for a move fee of as a lot as 528 gallons per hour. The maximum permissible working strain for both fashions is 50 bar and 600 kilos respectively. The stringent use of similar elements throughout the Ecosmart product household keeps production costs and subsequently the final price low. At the same time, a high level of safety can be guaranteed by focusing on all important design features such because the pressure relief valve or the proven sandwich diaphragm with continuous monitoring. The LCC variant was made available at the end of 2021 and the LCD model shall be out there by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow sequence, Lewa has supplied the inexpensive Ecosmart pump for several years. ร้านซ่อมเครื่องวัดความดัน is mainly because of the reality that though a dependable pump unit is required in quite a few processes, on the similar time relatively low discharge pressures in the lower two-digit vary require less advanced pump technology. With the Ecosmart LCA in the single pump model, nevertheless, solely a move fee of under eighty gallons per hour was beforehand potential. In order to have the ability to supply the Ecosmart for functions with higher circulate rates, the engineers at Lewa began creating two extra, larger pump variants in 2019. The purpose was to scale up the Ecosmart to bigger purposes with the proven security degree and top quality Lewa parts with out considerably increasing the low investment price typical for this pump sequence. This was to be achieved by a consistent modular principle inside the pump series, in addition to a strict concentrate on the important functions and features. The specs also demanded the similar old Lewa suitability for unrestricted steady operation over a few years. Options for integrating the pumps into automated techniques through analog control indicators or bus methods are additionally 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 had to be carried out constructively. Larger plunger diameters were chosen for the smaller LCC variant, in order that more than 264 gallons per hour may be conveyed as an alternative of less than eighty gallons. In the case of the extra powerful LCD model, the engineers also determined to extend the stroke length so that a most flow price of 528 gallons per hour might be achieved. Both pump types can work in opposition to a most working stress of fifty 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 acquainted from other pump collection. For this purpose, particular person, essential options such because the integrated strain safety valve or the sandwich diaphragm have been taken over from the Ecoflow fashions. The individually adjustable stress safety valve ensures that sudden overpressure in the pump doesn’t harm the diaphragm or pump drive. The diaphragm protection system DPS, whose important component is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm all the time works in the best place. It cannot be overstretched or broken during start-up. Thus, the pump is protected in opposition to working errors or upset operating circumstances. Finally, the usual diaphragm monitoring system checks the situation of the diaphragm and warns plant operators immediately if there is any injury. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security at all times, particularly in sensitive areas with poisonous fluids. However, diaphragm monitoring is rarely used because Lewa diaphragms of this series often achieve service lives of several years – even beneath full load and steady operation.
A key level was to maintain production costs within a similar vary to the small LCA variant, thereby creating attractive market costs for functions with less demanding necessities and decrease operating pressure. To achieve this, the design of the two new pump sizes needed to combine elements which are as similar or no less than related as attainable to have the ability to keep away from high manufacturing costs. In this way, the Lewa engineers had been capable of successfully implement the common elements strategy that had already been practiced many occasions.
Pump customers also benefit from this clever modular principle, as many wear elements can be utilized throughout pump sorts. This significantly simplifies the spare elements inventory. At the same time, the modular precept additionally permits individual changes to the respective software. For instance, stroke frequencies or plunger diameters could be chosen individually. The basis 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 cabinet.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility also provides benefits 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 fashions 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 as the plunger, which often results in bulky pump dimensions. The 90-degree orientation avoids this with the new fashions. This benefit 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, only high-quality, sturdy materials are used within the LCC and LCD variations. Toxic and abrasive substances can stress the pump significantly and so quite so much of supplies can be utilized on the wet end, which are also efficiently used within the high-pressure variants of the Ecoflow series. Many high-quality components from the Ecoflow sequence are additionally used for the drive items, using the common elements technique. The result is robustness and durability that’s 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 complicated lubrication through two separate oil techniques and ends in a less complicated design, which not only facilitates operation but additionally reduces maintenance work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the united states business commonplace for metering pumps API 675, making certain practically limitless utilization for quite a few demanding processes in a extensive range of industries.
USE IN THE CHEMICAL INDUSTRY
For example, when metering solvents in the chemical industry, pumps are wanted that on the one hand meet the highest specification necessities and on the opposite hand are still cost-effective. Here, the Ecosmart pump with its larger efficiency is able to meet exactly these necessities, because it has been exactly engineered for functions in the lower stress range up to 50 bar (600 pounds). The larger versions of the Ecosmart pump are additionally suitable for industrial water therapy, such as in seawater desalination or industrial cooling circuits. What counts right here above all is compactness and cost-effective design, which the entire Lewa Ecosmart series fulfills due to its revolutionary design precept.
Before the model new pump variants can be found to prospects, a number of in depth tests might be carried out. They will be positive that the models also meet the high inside firm necessities for reliability and performance in operational follow. They include, on the one hand, steady load checks of as much as several tens of hundreds of hours and, then again, overload exams. In the latter, the pump is run constantly at as much as 20 percent above most stress to further validate its robustness. Special checks are carried out in heated cupboards to proof that the pumps also perform perfectly under extreme ambient circumstances. After successful completion of all tests and last changes, the Ecosmart version LCC is now on the market, the LCD model will follow in mid-2022.
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