In many purposes within the oil and fuel industry, the chemical trade, and even the food industry, pumps that work reliably and supply excessive efficiency are needed. 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 secure mannequin that may handle circulate rates of as a lot as 300 l/h for many years. For use in functions with larger move rates, the pump skilled from Leonberg, Germany, is now increasing its product range with two new sizes. In addition to the LCA version, the Ecosmart may even be obtainable in the extra powerful LCC and LCD variations sooner or later. While the LCC model can meter in extra of 264 gallons per hour, Lewa designed the LCD for a flow price of as much as 528 gallons per hour. The most permissible working stress for each models is 50 bar and 600 pounds respectively. The stringent use of similar elements inside the Ecosmart product family keeps manufacturing costs and due to this fact the ultimate value low. At the identical time, a excessive level of security can be assured by focusing on all essential design options such as the stress aid valve or the proven sandwich diaphragm with steady monitoring. The LCC variant was made available on the finish of 2021 and the LCD model will be obtainable by mid-2022.
In addition to the confirmed diaphragm metering pumps of the Ecoflow series, Lewa has supplied the inexpensive Ecosmart pump for several years. This is especially as a end result of the reality that although a reliable pump unit is required in numerous processes, at the similar time relatively low discharge pressures within the decrease two-digit vary require less complicated pump expertise. With the Ecosmart LCA in the single pump version, nevertheless, only a flow price of under eighty gallons per hour was beforehand attainable. In order to have the ability to supply the Ecosmart for applications with larger circulate charges, the engineers at Lewa began developing two further, larger pump variants in 2019. The purpose was to scale up the Ecosmart to larger functions with the confirmed security level and prime quality Lewa elements without significantly growing the low funding cost typical for this pump sequence. This was to be achieved by a constant modular principle inside the pump series, in addition to a strict focus on the essential 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 systems through analog control alerts or bus methods are also a matter of course.
เครื่องมือใช้วัดความดัน on the test stand.
ADJUSTMENT OF PLUNGER DIAMETER AND STROKE ENABLE MORE FLOW
First of all, the necessities for the conveying capacity needed to be carried out constructively. Larger plunger diameters had been selected for the smaller LCC variant, so that greater than 264 gallons per hour can be conveyed instead of less than 80 gallons. In the case of the more powerful LCD version, the engineers additionally determined to extend the stroke length so that a most circulate rate of 528 gallons per hour could be achieved. Both pump varieties can work in opposition to 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 important because the efficiency of the pump was the operational reliability typical of Lewa acquainted from other pump collection. For this function, particular person, essential features such because the built-in stress safety valve or the sandwich diaphragm had been taken over from the Ecoflow models. The individually adjustable stress security valve ensures that sudden overpressure in the pump doesn’t damage the diaphragm or pump drive. The diaphragm safety system DPS, whose essential element is a return spring for the diaphragm, also ensures that the PTFE sandwich diaphragm at all times works in the right place. It cannot be overstretched or broken throughout start-up. Thus, the pump is protected against operating errors or upset operating circumstances. Finally, the standard diaphragm monitoring system checks the situation of the diaphragm and warns plant operators immediately if there is any injury. This reliably prevents cross-contamination between the pump and the piping system and ensures operational security always, especially in delicate areas with poisonous fluids. However, diaphragm monitoring is never used as a outcome of Lewa diaphragms of this collection usually achieve service lives of a number of years – even under full load and continuous operation.
A key point was to keep manufacturing costs within an analogous vary to the small LCA variant, thereby creating engaging market prices for functions with less demanding necessities and decrease working pressure. To accomplish that, the design of the 2 new pump sizes needed to integrate elements that are as equivalent or a minimum of similar as potential to have the ability to avoid high manufacturing prices. In this manner, the Lewa engineers have been in a position to efficiently implement the frequent parts strategy that had already been practiced many occasions.
Pump users also benefit from this intelligent modular principle, as many put on components can be utilized across pump types. This considerably simplifies the spare parts stock. At the identical time, the modular precept also allows particular person adjustments to the respective software. For instance, stroke frequencies or plunger diameters may be chosen individually. The basis for that 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 also provides advantages for plant building: It permits the Ecosmart pump to be oriented either vertically or horizontally, making it simpler to combine the unit into methods with limited or confined areas. In addition, the pump head of the brand new LCC and LCD models is aligned at right angles to the plunger axis, resulting in a very compact format. In many pumps, the pump head is on the identical axis because the plunger, which often results in bulky pump dimensions. The 90-degree orientation avoids this with the new fashions. This benefit is achieved by the extraordinarily compact and utterly newly developed, cost-effective diaphragm drive.
In order to make sure the long service life typical of Lewa pumps, solely high-quality, strong supplies are used in the LCC and LCD versions. Toxic and abrasive substances can stress the pump significantly and so a wide range of supplies can be utilized on the wet finish, which are also successfully used in the high-pressure variants of the Ecoflow collection. Many high-quality components from the Ecoflow sequence are also used for the drive models, employing the frequent components strategy. The result’s robustness and sturdiness that is uncommon 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 systems and leads to an easier design, which not only facilitates operation but in addition reduces upkeep work.
Last however not least, the new LCC and LCD versions—like the LCA—comply with the us trade standard for metering pumps API 675, guaranteeing practically limitless utilization for numerous demanding processes in a extensive range of industries.
USE IN THE CHEMICAL INDUSTRY
For instance, when metering solvents within the chemical industry, pumps are needed that on the one hand meet the best specification necessities and then again are still cost-effective. Here, the Ecosmart pump with its larger performance is prepared to meet precisely these requirements, because it has been exactly engineered for purposes in the lower stress vary 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 entire Lewa Ecosmart series fulfills because of its progressive design precept.
Before the brand new pump variants can be found to clients, numerous intensive checks shall be carried out. They will make positive that the units also meet the high inner firm requirements for reliability and performance in operational apply. They embrace, on the one hand, continuous load checks of up to a number of tens of thousands of hours and, on the other hand, overload exams. In the latter, the pump is run constantly at as much as 20 percent above maximum strain to further validate its robustness. Special checks are carried out in heated cupboards to proof that the pumps also carry out completely under extreme ambient circumstances. After successful completion of all tests and last adjustments, the Ecosmart version LCC is now on the market, the LCD mannequin will follow in mid-2022.
Share