Affordable Even at Higher Flow Rates

In many applications in the oil and gas business, the chemical industry, or even the food business, pumps that work reliably and provide excessive performance are wanted. At the same time, they must have convincingly low investment prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and protected model that may deal with move charges of up to 300 l/h for a few years. For use in purposes with larger flow charges, the pump professional from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA model, the Ecosmart may even be available in the more highly effective LCC and LCD versions sooner or later. While the LCC mannequin can meter in extra of 264 gallons per hour, Lewa designed the LCD for a flow rate of as a lot as 528 gallons per hour. The most permissible operating stress for both fashions is 50 bar and 600 kilos respectively. The stringent use of comparable parts inside the Ecosmart product household keeps production costs and due to this fact the ultimate price low. At the identical time, a excessive level of security can be guaranteed by focusing on all important design features such because the stress aid valve or the proven sandwich diaphragm with continuous monitoring. The LCC variant was made obtainable on the finish of 2021 and the LCD model will be out there by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow sequence, Lewa has offered the cheaper Ecosmart pump for a number of years. This is principally because of the reality that although a dependable pump unit is required in quite a few processes, at the same time comparatively low discharge pressures in the lower two-digit vary require much less complex pump know-how. With the Ecosmart LCA in the single pump model, however, only a flow rate of beneath eighty gallons per hour was beforehand possible. In order to be able to supply the Ecosmart for applications with higher flow charges, the engineers at Lewa started developing two extra, larger pump variants in 2019. เกจวัดแรงดันสูญญากาศ was to scale up the Ecosmart to bigger functions with the proven safety level and high quality Lewa components without significantly rising the low investment price typical for this pump series. This was to be achieved by a consistent modular principle throughout the pump sequence, in addition to a strict concentrate on the essential functions and options. The specs also demanded the standard Lewa suitability for unrestricted steady operation over many years. Options for integrating the pumps into automated techniques by way of analog control alerts or bus techniques are additionally a matter after all.
Lewa Ecosmart LCC3 on the test stand.
First of all, the requirements for the conveying capability needed to be applied constructively. Larger plunger diameters had been selected for the smaller LCC variant, so that more than 264 gallons per hour may be conveyed as a substitute of less than 80 gallons. In the case of the more highly effective LCD version, the engineers also determined to increase the stroke length so that a maximum circulate fee of 528 gallons per hour could probably be achieved. Both pump sorts can work against a most operating stress of fifty 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 familiar from different pump collection. For this objective, individual, essential features such because the built-in pressure safety valve or the sandwich diaphragm were 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 part is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the proper place. It cannot be overstretched or damaged throughout start-up. Thus, the pump is protected towards operating errors or upset operating conditions. Finally, the standard diaphragm monitoring system checks the situation of the diaphragm and warns plant operators instantly if there may be any damage. This reliably prevents cross-contamination between the pump and the piping system and ensures operational safety at all times, particularly in sensitive areas with toxic fluids. However, diaphragm monitoring isn’t used as a end result of Lewa diaphragms of this collection often achieve service lives of a quantity of years – even under full load and steady operation.
A key level was to keep production costs within an analogous vary to the small LCA variant, thereby creating engaging market prices for applications with much less demanding necessities and decrease operating pressure. To do so, the design of the two new pump sizes wanted to integrate parts that are as similar or no much less than comparable as attainable to find a way to avoid high manufacturing costs. In this fashion, the Lewa engineers were in a place to efficiently implement the common components technique that had already been practiced many instances.
Pump customers additionally benefit from this intelligent modular precept, as many put on parts can be utilized throughout pump types. This considerably simplifies the spare components stock. At the identical time, the modular precept additionally permits particular person adjustments to the respective application. For example, stroke frequencies or plunger diameters can be selected 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 additionally provides advantages for plant construction: It allows the Ecosmart pump to be oriented both vertically or horizontally, making it easier to integrate the unit into techniques with limited or confined areas. In addition, the pump head of the model 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 same axis as the plunger, which often ends 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, strong materials are used within the LCC and LCD versions. Toxic and abrasive substances can stress the pump significantly and so a selection of supplies can be utilized on the moist end, which are additionally efficiently used in the high-pressure variants of the Ecoflow series. Many high-quality parts from the Ecoflow series are also used for the drive items, using the frequent parts technique. The result is robustness and sturdiness that is unusual in this pump class. In addition, all Ecosmart pumps have been designed with a single oil bath, which is used for both the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the more advanced lubrication through two separate oil methods and results in an easier design, which not solely facilitates operation but additionally reduces maintenance work.
Last but not least, the new LCC and LCD versions—like the LCA—comply with the U.S. trade normal for metering pumps API 675, ensuring nearly limitless utilization for quite a few demanding processes in a variety of industries.
For instance, when metering solvents in the chemical industry, pumps are wanted that on the one hand meet the very best specification requirements and then again are nonetheless cost-effective. Here, the Ecosmart pump with its larger performance is in a position to meet precisely these requirements, as it has been exactly engineered for purposes in the decrease stress vary up to 50 bar (600 pounds). The larger versions of the Ecosmart pump are additionally appropriate for industrial water remedy, 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 sequence fulfills due to its progressive design precept.
Before the new pump variants can be found to prospects, a selection of intensive tests might be carried out. They will make certain that the models also meet the high internal company requirements for reliability and performance in operational practice. They include, on the one hand, steady load tests of up to a quantity of tens of 1000’s of hours and, on the opposite hand, overload tests. In the latter, the pump is run constantly at up to 20 p.c above most strain to additional validate its robustness. Special exams are carried out in heated cabinets to proof that the pumps additionally carry out completely underneath extreme ambient situations. After profitable completion of all tests and final adjustments, the Ecosmart model LCC is now on the market, the LCD mannequin will observe in mid-2022.

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