In many purposes within the oil and fuel industry, the chemical business, and even the food industry, pumps that work reliably and provide high efficiency are wanted. At the same time, they must have convincingly low investment prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has offered a cost-attractive and secure model that can handle move rates of as much as 300 l/h for many years. For use in purposes with larger circulate rates, the pump professional from Leonberg, Germany, is now increasing its product vary with two new sizes. In addition to the LCA version, the Ecosmart may even be obtainable within the more highly effective 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 flow rate of up to 528 gallons per hour. The most permissible working stress for each fashions is 50 bar and 600 kilos respectively. The stringent use of similar parts within the Ecosmart product family keeps production costs and subsequently the ultimate worth low. At the identical time, a excessive stage of security could be guaranteed by focusing on all important design features such because the pressure reduction valve or the confirmed sandwich diaphragm with steady monitoring. The LCC variant was made out there at the finish of 2021 and the LCD model will be available by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow series, Lewa has offered the cheaper Ecosmart pump for a quantity of years. This is principally as a result of the fact that though a reliable pump unit is required in quite a few processes, at the same time relatively low discharge pressures within the lower two-digit vary require much less advanced pump know-how. With the Ecosmart LCA within the single pump model, nevertheless, only a flow fee of under 80 gallons per hour was previously potential. In order to have the power to supply the Ecosmart for applications with greater flow charges, the engineers at Lewa started developing two additional, larger pump variants in 2019. The aim was to scale up the Ecosmart to bigger applications with the confirmed security level and prime quality Lewa components without considerably rising the low investment cost typical for this pump sequence. This was to be achieved by a constant modular precept throughout the pump collection, as well as a strict focus on the important features and options. The specs also demanded the usual Lewa suitability for unrestricted steady operation over many years. Options for integrating the pumps into automated techniques through analog management signals or bus systems are additionally a matter in fact.
Lewa Ecosmart LCC3 on the take a look at stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the necessities for the conveying capacity had to be carried out constructively. Larger plunger diameters had been chosen 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 additionally determined to extend the stroke size so that a maximum move rate of 528 gallons per hour could be achieved. Both pump types can work in opposition to a most working strain of fifty bar. As with all hydraulically actuated diaphragm metering pumps, most 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 series. For this function, individual, important options such because the integrated strain safety valve or the sandwich diaphragm had been taken over from the Ecoflow models. The individually adjustable stress security 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 all the time works in the proper place. It cannot be overstretched or damaged during start-up. Thus, the pump is protected against operating errors or upset operating conditions. Finally, the standard diaphragm monitoring system checks the situation of the diaphragm and warns plant operators immediately if there is any damage. This reliably prevents cross-contamination between the pump and the piping system and ensures operational safety at all times, especially in delicate areas with toxic fluids. However, diaphragm monitoring is never used as a outcome of Lewa diaphragms of this series usually obtain service lives of several years – even under full load and continuous operation.
A key point was to keep manufacturing costs inside an analogous vary to the small LCA variant, thereby creating attractive market costs for purposes with much less demanding necessities and decrease working pressure. To accomplish that, the design of the 2 new pump sizes wanted to integrate components that are as equivalent or no less than comparable as possible to be able to keep away from excessive manufacturing prices. In this way, the Lewa engineers were in a position to efficiently implement the common components technique that had already been practiced many occasions.
Pump users additionally profit from this intelligent modular principle, as many put on elements can be used throughout pump varieties. This considerably simplifies the spare parts inventory. At the same time, the modular principle additionally permits particular person adjustments to the respective utility. For example, stroke frequencies or plunger diameters could be chosen individually. ตัววัดแรงดันน้ำ for that is the M900 pump head, which is already used within the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cupboard.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility also presents benefits for plant construction: It allows the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to integrate the unit into systems with restricted or confined areas. In addition, the pump head of the model 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 regularly results in cumbersome pump dimensions. The 90-degree orientation avoids this with the model new fashions. This advantage is achieved by the extraordinarily compact and utterly newly developed, cost-effective diaphragm drive.
In order to ensure 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 significantly and so quite so much of materials can be utilized on the wet end, which are additionally efficiently used within the high-pressure variants of the Ecoflow sequence. Many high-quality parts from the Ecoflow series are additionally used for the drive models, employing the frequent elements strategy. The result is robustness and durability that is uncommon 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 extra complicated lubrication via 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 brand new LCC and LCD versions—like the LCA—comply with the united states trade standard for metering pumps API 675, making certain nearly unlimited utilization for quite a few demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For example, when metering solvents in the chemical business, 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 larger efficiency is able to meet precisely these necessities, as it has been exactly engineered for purposes in the decrease stress range as a lot as 50 bar (600 pounds). The bigger variations of the Ecosmart pump are additionally suitable 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 complete Lewa Ecosmart series fulfills due to its innovative design principle.
Before the new pump variants can be found to customers, numerous extensive checks might be carried out. They will make positive that the units additionally meet the high inner company necessities for reliability and performance in operational practice. They include, on the one hand, continuous load exams of as a lot as several tens of hundreds of hours and, however, overload tests. In the latter, the pump is run repeatedly at up to 20 percent above maximum stress to additional validate its robustness. Special exams are carried out in heated cabinets to proof that the pumps also carry out perfectly beneath extreme ambient circumstances. After profitable completion of all exams and final changes, the Ecosmart version LCC is now on the market, the LCD model will follow in mid-2022.
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