In many purposes within the oil and gasoline industry, the chemical trade, or even the meals business, pumps that work reliably and supply high efficiency are wanted. At the same time, they should have convincingly low funding costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and safe mannequin that may deal with move rates of up to 300 l/h for many years. For use in purposes with higher circulate charges, the pump professional from Leonberg, Germany, is now expanding its product range with two new sizes. In addition to the LCA model, the Ecosmart will also be available in the extra powerful LCC and LCD versions in the future. While the LCC model can meter in extra of 264 gallons per hour, Lewa designed the LCD for a move price of up to 528 gallons per hour. The maximum permissible operating pressure for each fashions is 50 bar and 600 kilos respectively. The stringent use of similar parts within the Ecosmart product family retains production costs and therefore the ultimate value low. At the identical time, a high degree of safety can be assured by focusing on all essential design features such as the stress reduction valve or the confirmed sandwich diaphragm with continuous monitoring. The LCC variant was made obtainable at the end of 2021 and the LCD model might be available by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow series, Lewa has supplied the cheaper Ecosmart pump for a quantity of years. This is principally as a result of the reality that though a reliable pump unit is required in numerous processes, on the similar time relatively low discharge pressures within the decrease two-digit vary require much less complicated pump expertise. With the Ecosmart LCA in the single pump version, nevertheless, only a circulate fee of below eighty gallons per hour was previously attainable. In order to have the ability to provide the Ecosmart for applications with greater circulate rates, the engineers at Lewa began creating two additional, larger pump variants in 2019. The purpose was to scale up the Ecosmart to bigger functions with the proven safety stage and high quality Lewa parts with out significantly increasing the low funding price typical for this pump sequence. This was to be achieved by a consistent modular precept within the pump series, as nicely as a strict focus on the essential capabilities and options. The specs also demanded the usual Lewa suitability for unrestricted continuous operation over a few years. Options for integrating the pumps into automated systems by way of analog management signals or bus techniques are also 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 requirements for the conveying capability had to be applied constructively. Larger plunger diameters have been selected for the smaller LCC variant, so that greater than 264 gallons per hour may be conveyed as an alternative of lower than eighty gallons. In the case of the more powerful LCD version, the engineers additionally decided to increase the stroke length so that a maximum circulate price of 528 gallons per hour could be achieved. Both pump sorts can work in opposition to a most operating strain of fifty bar. As with all hydraulically actuated diaphragm metering pumps, maximum pressures are achieved with smaller plunger diameters.
Just as important because the performance of the pump was the operational reliability typical of Lewa acquainted from different pump sequence. For this purpose, individual, important options such as the built-in strain safety valve or the sandwich diaphragm were taken over from the Ecoflow fashions. The individually adjustable pressure security valve ensures that sudden overpressure within the pump does not damage the diaphragm or pump drive. The diaphragm protection system DPS, whose essential part is a return spring for the diaphragm, additionally ensures that the PTFE sandwich diaphragm at all times works in the right place. It can’t be overstretched or broken throughout start-up. Thus, the pump is protected towards operating errors or upset operating circumstances. Finally, the usual diaphragm monitoring system checks the condition of the diaphragm and warns plant operators instantly if there is any injury. 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 series normally achieve service lives of several years – even under full load and continuous operation.
A key point was to keep manufacturing costs within an identical range 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 integrate elements which are as identical or at least related as possible in order to keep away from high manufacturing prices. In this way, the Lewa engineers have been able to successfully implement the common parts technique that had already been practiced many times.
Pump customers additionally benefit from this intelligent modular precept, as many put on elements can be utilized throughout pump sorts. This considerably simplifies the spare elements stock. At เกจวัดแรงดันน้ำ4หุน , the modular principle also permits particular person changes to the respective application. For example, 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.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility additionally presents benefits for plant development: It allows the Ecosmart pump to be oriented both vertically or horizontally, making it simpler to combine the unit into techniques with restricted or confined areas. In addition, the pump head of the new LCC and LCD fashions is aligned at proper angles to the plunger axis, leading to a very compact format. In many pumps, the pump head is on the identical axis as the plunger, which often leads to bulky pump dimensions. The 90-degree orientation avoids this with the new models. This advantage is achieved by the extremely compact and fully newly developed, cost-effective diaphragm drive.
In order to ensure the long service life typical of Lewa pumps, solely high-quality, sturdy supplies are used in the LCC and LCD variations. Toxic and abrasive substances can stress the pump considerably and so quite lots of supplies can be used on the wet end, that are also successfully used within the high-pressure variants of the Ecoflow series. Many high-quality parts from the Ecoflow sequence are also used for the drive units, employing the widespread parts technique. The result’s robustness and durability that is uncommon on this pump class. In addition, all Ecosmart pumps have been designed with a single oil bathtub, which is used for each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra complex lubrication by way of two separate oil techniques and results in an easier design, which not only facilitates operation but also reduces upkeep work.
Last however not least, the brand new LCC and LCD versions—like the LCA—comply with the us trade normal for metering pumps API 675, making certain nearly 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 trade, pumps are needed that on the one hand meet the highest specification necessities and then again are nonetheless cost-effective. Here, the Ecosmart pump with its greater performance is able to meet exactly these requirements, as it has been exactly engineered for purposes within the lower strain range as a lot as 50 bar (600 pounds). The bigger variations of the Ecosmart pump are also 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 whole Lewa Ecosmart series fulfills due to its revolutionary design precept.
Before the brand new pump variants can be found to clients, a variety of intensive exams might be carried out. They will ensure that the units additionally meet the excessive internal firm requirements for reliability and efficiency in operational apply. They include, on the one hand, steady load checks of up to several tens of thousands of hours and, then again, overload checks. In the latter, the pump is run continuously at up to 20 percent above maximum stress to further validate its robustness. Special tests are carried out in heated cupboards to proof that the pumps also carry out completely underneath extreme ambient situations. After profitable completion of all checks and final adjustments, the Ecosmart model LCC is now available on the market, the LCD mannequin will observe in mid-2022.
Share