In many functions in the oil and gasoline trade, the chemical industry, and even the meals industry, pumps that work reliably and supply high performance are wanted. At the identical time, they will need to have convincingly low investment prices. With the Ecosmart diaphragm metering pump, the German Lewa GmbH has supplied a cost-attractive and protected model that may handle flow charges of up to 300 l/h for a number of years. For use in functions with greater 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 also be out there 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 circulate rate of up to 528 gallons per hour. The maximum permissible operating pressure for both models is 50 bar and 600 kilos respectively. The stringent use of comparable elements inside the Ecosmart product household keeps production prices and subsequently the ultimate price low. At the identical time, a high degree of security can be guaranteed by specializing in all important design features such as the strain aid valve or the proven sandwich diaphragm with continuous monitoring. The LCC variant was made obtainable at the end of 2021 and the LCD model shall be out there by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow sequence, Lewa has supplied the less expensive Ecosmart pump for several years. This is mainly as a end result of the truth that though a dependable pump unit is required in quite a few processes, on the similar time comparatively low discharge pressures within the decrease two-digit vary require less advanced pump expertise. With the Ecosmart LCA within the single pump version, however, solely a flow rate of below eighty gallons per hour was beforehand potential. In order to find a way to provide the Ecosmart for purposes with greater flow charges, the engineers at Lewa started creating two extra, bigger pump variants in 2019. The purpose was to scale up the Ecosmart to bigger purposes with the proven safety level and high quality Lewa elements without considerably rising the low investment value typical for this pump collection. This was to be achieved by a consistent modular principle inside the pump series, in addition to a strict concentrate on the essential functions and features. The specifications also demanded the usual Lewa suitability for unrestricted steady operation over many years. Options for integrating the pumps into automated methods through analog management signals or bus methods are additionally a matter after all.
Lewa Ecosmart LCC3 on the check stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the requirements for the conveying capacity needed to be implemented constructively. Larger plunger diameters had been chosen for the smaller LCC variant, so that greater than 264 gallons per hour could be conveyed instead of less than 80 gallons. In the case of the more highly effective LCD model, the engineers also decided to extend the stroke size so that a maximum flow rate of 528 gallons per hour might be achieved. Both pump sorts can work towards a most operating strain of fifty bar. As with all hydraulically actuated diaphragm metering pumps, most pressures are achieved with smaller plunger diameters.
Just as necessary because the efficiency of the pump was the operational reliability typical of Lewa familiar from other pump sequence. For this objective, individual, important options such because the built-in strain security valve or the sandwich diaphragm have been taken over from the Ecoflow fashions. The individually adjustable pressure security valve ensures that sudden overpressure in the pump doesn’t 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 always 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 usual diaphragm monitoring system checks the situation of the diaphragm and warns plant operators instantly 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 poisonous fluids. However, diaphragm monitoring is rarely used because Lewa diaphragms of this sequence often obtain service lives of several years – even under full load and steady operation.
A key point was to keep manufacturing costs within an identical vary to the small LCA variant, thereby creating engaging market costs for applications with much less demanding necessities and decrease operating stress. To achieve this, the design of the two new pump sizes wanted to combine components that are as similar or a minimum of similar as attainable so as to keep away from high manufacturing prices. In this fashion, the Lewa engineers had been capable of efficiently implement the frequent components technique that had already been practiced many times.
Pump users also profit from this clever modular principle, as many put on components can be utilized across pump types. This significantly simplifies the spare parts inventory. At the same time, the modular principle also allows particular person adjustments to the respective utility. For example, stroke frequencies or plunger diameters may be chosen individually. The foundation for this is the M900 pump head, which is already used in the LCA variant and in the Ecoflow program.
Lewa Ecosmart LCC in heated cabinet.
GOOD INTEGRABILITY FOR PLANT CONSTRUCTION COMPANIES
The pump’s flexibility also provides advantages for plant development: It permits the Ecosmart pump to be oriented both vertically or horizontally, making it simpler to integrate the unit into methods with restricted or confined spaces. In addition, the pump head of the new LCC and LCD models is aligned at proper angles to the plunger axis, resulting in a very compact format. In many pumps, the pump head is on the same axis because the plunger, which often ends in bulky pump dimensions. The 90-degree orientation avoids this with the model new models. This benefit is achieved by the extraordinarily compact and fully newly developed, cost-effective diaphragm drive.
In order to make sure the long service life typical of Lewa pumps, solely high-quality, robust materials are used in the LCC and LCD variations. Toxic and abrasive substances can stress the pump considerably and so a selection of materials can be utilized on the wet end, that are also successfully used in the high-pressure variants of the Ecoflow sequence. Many high-quality elements from the Ecoflow series are also used for the drive models, using the frequent components strategy. 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 tub, which is used for each the lubrication of the drive unit and the hydraulics of the pump head. This eliminates the more advanced lubrication via two separate oil methods and ends in an easier design, which not solely facilitates operation but also reduces maintenance work.
Last however not least, the brand new LCC and LCD versions—like the LCA—comply with the united states business standard for metering pumps API 675, making certain almost limitless utilization for numerous demanding processes in a variety of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents in the chemical trade, pumps are wanted that on the one hand meet the very best specification necessities and then again are nonetheless cost-effective. Here, the Ecosmart pump with its higher efficiency is in a position to meet exactly these requirements, because it has been exactly engineered for applications in the lower strain range up to 50 bar (600 pounds). The bigger variations of the Ecosmart pump are additionally suitable for industrial water treatment, corresponding to in seawater desalination or industrial cooling circuits. What counts here above all is compactness and cost-effective design, which the whole Lewa Ecosmart collection fulfills due to its innovative design precept.
Before the brand new pump variants can be found to customers, numerous in depth tests might be carried out. They will ensure that the models also meet the high inner firm requirements for reliability and efficiency in operational practice. ราคาเพรสเชอร์เกจ embrace, on the one hand, steady load checks of as a lot as several tens of thousands of hours and, on the opposite hand, overload exams. In the latter, the pump is run repeatedly at up to 20 percent above most 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 situations. After profitable completion of all checks and last adjustments, the Ecosmart model LCC is now available on the market, the LCD mannequin will observe in mid-2022.