In many functions in the oil and fuel industry, the chemical business, or even the food trade, pumps that work reliably and supply excessive efficiency are wanted. At the same time, they should have convincingly low funding prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has provided a cost-attractive and protected mannequin that may handle move charges of as much as 300 l/h for a few years. For use in purposes with higher 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 available within the extra highly effective LCC and LCD versions in the future. While the LCC mannequin can meter in extra of 264 gallons per hour, Lewa designed the LCD for a flow fee of up to 528 gallons per hour. The maximum permissible operating strain for both models is 50 bar and 600 pounds respectively. เกจวัดแรงดันsumo of similar components inside the Ecosmart product family keeps manufacturing prices and subsequently the ultimate worth low. At the same time, a high stage of security can be guaranteed by focusing on all essential design options such because the stress aid valve or the proven sandwich diaphragm with steady monitoring. The LCC variant was made out there on the finish 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 provided the less expensive Ecosmart pump for a quantity of years. This is especially as a outcome of the fact that though a dependable pump unit is required in quite a few processes, on the similar time comparatively low discharge pressures in the lower two-digit range require much less complex pump know-how. With the Ecosmart LCA in the single pump model, nonetheless, solely a move fee of under eighty gallons per hour was beforehand potential. In order to have the flexibility to supply the Ecosmart for functions with greater flow rates, the engineers at Lewa started developing two further, bigger pump variants in 2019. The aim was to scale up the Ecosmart to bigger purposes with the confirmed security degree and high quality Lewa elements without significantly increasing the low investment cost typical for this pump collection. เกจวัดแรงดันแก๊สlpgรถยนต์ was to be achieved by a consistent modular precept within the pump series, in addition to a strict give consideration to the essential capabilities and options. The specs also demanded the same old Lewa suitability for unrestricted continuous operation over a few years. Options for integrating the pumps into automated methods by way of analog control indicators or bus methods are also a matter after all.
Lewa Ecosmart LCC3 on the take a look at stand.
First of all, the necessities for the conveying capability needed to be applied constructively. Larger plunger diameters had been chosen for the smaller LCC variant, in order that more than 264 gallons per hour could be conveyed instead of less than 80 gallons. In the case of the extra powerful LCD model, the engineers additionally determined to increase the stroke size so that a most move fee of 528 gallons per hour could be achieved. Both pump sorts can work towards a most operating strain of 50 bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as essential as the performance of the pump was the operational reliability typical of Lewa acquainted from other pump collection. For this objective, individual, important features such because the built-in stress safety valve or the sandwich diaphragm have been taken over from the Ecoflow models. The individually adjustable pressure security valve ensures that sudden overpressure in the pump does not damage the diaphragm or pump drive. The diaphragm safety system DPS, whose essential component is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the right place. It can’t be overstretched or broken during start-up. Thus, the pump is protected against operating errors or upset operating circumstances. Finally, the standard diaphragm monitoring system checks the condition 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 safety always, especially in delicate areas with toxic fluids. However, diaphragm monitoring is never used because Lewa diaphragms of this sequence normally achieve service lives of several years – even under full load and steady operation.
A key point was to maintain production prices inside an analogous vary to the small LCA variant, thereby creating enticing market prices for purposes with much less demanding necessities and decrease operating stress. To do so, the design of the two new pump sizes needed to integrate parts which are as identical or at least comparable as potential so as to keep away from high manufacturing costs. In this way, the Lewa engineers had been capable of successfully implement the common elements technique that had already been practiced many instances.
Pump users also benefit from this clever modular principle, as many wear parts can be used across pump sorts. This significantly simplifies the spare elements inventory. At the same time, the modular principle additionally allows individual changes to the respective utility. For instance, 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 in the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
The pump’s flexibility additionally provides advantages for plant development: It permits the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to integrate the unit into methods 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 particularly compact format. In many pumps, the pump head is on the identical axis because the plunger, which often results 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 ensure the long service life typical of Lewa pumps, only high-quality, sturdy supplies are used in the LCC and LCD variations. Toxic and abrasive substances can stress the pump significantly and so quite a lot of supplies can be utilized on the moist end, that are additionally successfully used within the high-pressure variants of the Ecoflow collection. Many high-quality components from the Ecoflow series are additionally used for the drive models, using the widespread parts strategy. The result’s 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 more complicated lubrication by way of two separate oil techniques and results in a less complicated 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 U.S. trade standard for metering pumps API 675, ensuring almost limitless usage for numerous demanding processes in a variety of industries.
For example, when metering solvents within the chemical business, pumps are wanted that on the one hand meet the highest specification requirements and on the other hand are still cost-effective. Here, the Ecosmart pump with its greater efficiency is ready to meet precisely these necessities, because it has been precisely engineered for functions in the lower stress range up to 50 bar (600 pounds). The larger variations of the Ecosmart pump are also suitable for industrial water therapy, 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 sequence fulfills thanks to its innovative design principle.
Before the new pump variants can be found to customers, numerous intensive tests shall be carried out. They will ensure that the units additionally meet the excessive inside company requirements for reliability and efficiency in operational follow. They include, on the one hand, steady load tests of up to a number of tens of thousands of hours and, on the opposite hand, overload tests. In the latter, the pump is run continuously at as a lot as 20 % above maximum pressure to additional validate its robustness. Special tests are carried out in heated cupboards to proof that the pumps additionally perform perfectly underneath extreme ambient circumstances. After successful completion of all exams and last changes, the Ecosmart model LCC is now available on the market, the LCD mannequin will observe in mid-2022.