Affordable Even at Higher Flow Rates

In เกจวัดแรงดันน้ำไทวัสดุ in the oil and gasoline business, the chemical business, or even the food trade, pumps that work reliably and supply high performance are wanted. At the same time, they must have convincingly low investment costs. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and secure model that can handle move rates of up to 300 l/h for many years. For use in applications with higher circulate charges, the pump expert from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA model, the Ecosmart may also be available within the more powerful LCC and LCD versions sooner or later. While the LCC model can meter in excess of 264 gallons per hour, Lewa designed the LCD for a move rate of as much as 528 gallons per hour. The maximum permissible operating pressure for both fashions is 50 bar and 600 kilos respectively. The stringent use of similar elements throughout the Ecosmart product household keeps manufacturing prices and therefore the final value low. At the same time, a high level of safety can be guaranteed by specializing in all essential design options such as the strain aid valve or the proven sandwich diaphragm with steady monitoring. The LCC variant was made obtainable at the end of 2021 and the LCD mannequin shall be out there by mid-2022.
In addition to the proven diaphragm metering pumps of the Ecoflow collection, Lewa has supplied the cheaper Ecosmart pump for several years. This is especially as a end result of the reality that although a reliable pump unit is required in quite a few processes, on the identical time relatively low discharge pressures within the decrease two-digit vary require less advanced pump technology. With the Ecosmart LCA in the single pump version, however, only a flow price of under eighty gallons per hour was beforehand potential. In order to be able to offer the Ecosmart for purposes with higher move charges, the engineers at Lewa began growing two further, larger pump variants in 2019. The purpose was to scale up the Ecosmart to bigger functions with the confirmed security stage and top quality Lewa parts with out significantly increasing the low investment cost typical for this pump series. This was to be achieved by a consistent modular precept inside the pump sequence, in addition to a strict focus on the important features and features. The specs additionally demanded the standard Lewa suitability for unrestricted steady operation over a few years. Options for integrating the pumps into automated methods via analog control signals or bus methods are additionally a matter of course.
Lewa Ecosmart LCC3 on the test stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the necessities for the conveying capability needed to be implemented constructively. Larger plunger diameters were chosen for the smaller LCC variant, so that more than 264 gallons per hour could be conveyed instead of less than eighty gallons. In the case of the extra powerful LCD model, the engineers additionally decided to extend the stroke size so that a most move fee of 528 gallons per hour might be achieved. Both pump sorts can work towards a most working stress of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most 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, essential features such because the integrated stress security valve or the sandwich diaphragm were taken over from the Ecoflow fashions. The individually adjustable pressure security 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 can’t be overstretched or broken throughout start-up. Thus, the pump is protected against operating errors or upset operating situations. Finally, the usual diaphragm monitoring system checks the situation of the diaphragm and warns plant operators instantly if there is any harm. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security always, particularly in delicate areas with toxic fluids. However, diaphragm monitoring isn’t used as a outcome of Lewa diaphragms of this collection normally achieve service lives of a quantity of years – even beneath full load and continuous operation.
A key level was to keep manufacturing costs within an analogous range to the small LCA variant, thereby creating attractive market costs for functions with less demanding requirements and decrease operating pressure. To accomplish that, the design of the 2 new pump sizes needed to integrate parts which are as identical or no less than related as attainable so as to keep away from high manufacturing costs. In this manner, the Lewa engineers were able to successfully implement the frequent parts strategy that had already been practiced many times.
Pump users also benefit from this intelligent modular principle, as many wear parts can be utilized across pump varieties. This considerably simplifies the spare parts inventory. At the same time, the modular principle additionally allows individual changes to the respective application. For instance, stroke frequencies or plunger diameters can be selected individually. The foundation for this is the M900 pump head, which is already used within 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 advantages for plant development: It permits the Ecosmart pump to be oriented both vertically or horizontally, making it easier to combine the unit into methods with limited or confined areas. In addition, the pump head of the 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 identical axis as the plunger, which frequently leads to bulky pump dimensions. The 90-degree orientation avoids this with the brand new models. This benefit is achieved by the extremely compact and completely newly developed, cost-effective diaphragm drive.
In order to make sure the lengthy service life typical of Lewa pumps, only high-quality, sturdy materials are used within the LCC and LCD versions. Toxic and abrasive substances can stress the pump considerably and so a wide selection of materials can be utilized on the wet finish, which are also successfully used within the high-pressure variants of the Ecoflow collection. Many high-quality components from the Ecoflow series are also used for the drive models, using 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 each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the extra advanced lubrication by way of two separate oil methods and leads to an easier design, which not solely 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 industry normal for metering pumps API 675, making certain nearly unlimited utilization for quite a few demanding processes in a extensive range of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents in the chemical business, pumps are needed that on the one hand meet the highest specification requirements and then again are nonetheless cost-effective. Here, the Ecosmart pump with its greater performance is ready to meet precisely these requirements, as it has been exactly engineered for functions within the lower pressure range up to 50 bar (600 pounds). The larger variations of the Ecosmart pump are also appropriate for industrial water therapy, corresponding to in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the entire Lewa Ecosmart collection fulfills because of its progressive design principle.
Before the brand new pump variants are available to customers, numerous extensive exams shall be carried out. They will make certain that the units additionally meet the high internal company necessities for reliability and performance in operational practice. They embody, on the one hand, steady load tests of up to several tens of 1000’s of hours and, then again, overload checks. In the latter, the pump is run continuously at as a lot as 20 p.c above maximum pressure to further validate its robustness. Special tests are carried out in heated cabinets to proof that the pumps also carry out completely underneath extreme ambient situations. After successful completion of all exams and ultimate adjustments, the Ecosmart model LCC is now in the marketplace, the LCD model will follow in mid-2022.
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