液环真空泵

大气量，2BE4

气量1,200至19,000 ACFM（2,000至32,300 m3/h）

NASH 2BE4液环真空泵和压缩机系列经过优化，效率比以前的2BE型提高了6-8％。2Be4基于久经考验、可行的平圆盘液环真空泵设计，具有聚异戊二烯衬里机体，灵活的*口和排放口连接，以及能够提高性能和可行性的大型检测口。气量范围从1,200至19,000 ACFM （2,000 至32,300 m³/h） 2BE4非常适于造纸、电力、采矿和化学加工业等苛刻环境。

描述

可行、快效、性能优佳

2BE4液环真空泵和压缩机系列是经过证明的2BE3型的升级产品，其设计旨在提供*过以前型号的性能、可行性和效率。与以前型号相比，2BE4效率提高8％，且降低了维护要求。

真空能力

2BE4泵可在整个真空范围内快效运行，无需变动泵的内部构件。当配备中心护罩时，可以实现一机两用，差别可达12 inHg (400 millibar)。这样做的优点很明显，因为可以减少使用的真空泵数量，从而节省了空间和安装成本。

基于经过证明的平圆盘2BE设计，坚固耐用且低维护

Nash的平圆盘液环真空泵/压缩机设计于二十世纪初在德国获得自主研发设计，已向全球数千个工厂提供，具有经过证明的性能、可行性，使您高枕无*。凭借不断创新，我们的自主研发设计设计具有以下特点：

圆盘具有可变端口，因此泵的性能在整个工作范围内得到优化。

大压差能力

液体残留物耐受性高

大型检查端口便于内部检查

关闭时，孔口可以*全排空泵

作为真空泵和压缩机运行时，其排放压力范围为36 psia（2.5 bar abs.)

某些应用需要在某道工序中抽真空和压缩。我们的液环真空泵和压缩机可以在一台泵中处理气体，而不需要在两台独立的机器中完成 - 降低了成本并简化了安装。

安装灵活，运行噪音低

独特的入口配置允许在顶部和侧面布置入口，以适应低净空安装。在空间有限的安装中，NASH 2BE4可在顶部安装排放分离器，从而节省占地面积且无需沟槽。2BE4泵在运行期间非常安静。即使是更大型的泵，声级记录也只有72至85 dB(A)（距离声源3.3英尺（1米）处测量）。

专为要求苛刻的环境而设计

设计为在造纸、电力、采矿、制糖和化学加工业等苛刻环境中运行，这些泵以低运营成本提供耐用性和可行性。泵体上的标准聚异戊二烯衬里可抵抗腐蚀性工艺气体和液体，从而提供出色的耐腐蚀性。与同等无衬层泵相比，聚异戊二烯衬里消耗的能量也更少。为了增加耐腐蚀性，某些型号采用不锈钢内部组件。

技术数据

吸入流量：1,200至19,000 ACFM（2,000至32,300 m3/h）

真空范围：至4.7 inHgA（至160 mbar abs.）

排气压强范围：36 psia（2.5 bars abs)

压差： 至22 psi（至1.5 bar）

轴密封：填料函（标准）

按要求的机械密封（单端/双端）

结构材料：球墨铸铁、不锈钢、两者结合

Liquid Ring Vacuum Pump

Large Capacity, 2BE4

Capacity 1,150 to 18,900 ACFM (1,950 to 32,100 m3/h)

The NASH 2BE4 liquid ring vacuum pump and compressor series have been optimized to deliver a 6-8% efficiency improvement over previous 2BE models. Based on the proven reliable flat sided liquid ring vacuum pump design the 2BE4 has a polyisoprene lined body, flexible inlet and discharge connections, and a large inspection port for improved performance and reliability. With capacity ranging from 1,150 to 18,900 ACFM (1,950 to 32,100 m³/h), the 2BE4 is well matched to demanding environments like the paper, power, mining, and chemical process industries.

Description

Reliable And Efficient With Proven Performance

The 2BE4 liquid ring vacuum pump and compressor series is an upgrade to the proven 2BE3 model and has been engineered to deliver improved performance, reliability, and efficiency over the previous models. Compared to previous models the 2BE4 offers efficiency improvements up to 8% and has reduced maintenance requirements.

Split Vacuum Capability

The 2BE4 pumps allow efficient operation over the entire vacuum range without the need to change the pump's internals. When equipped with a center shroud, split vacuum operation up to 12 inHg (400 millibar) differential can be achieved. The advantage of this is significant because it allows the use of fewer vacuum pumps–which saves space and installation costs.

Robust And Low Maintenance Based On Proven Flat Sided 2BE Design

Port plates with variable porting so pump performance is optimized across the entire operating range.

Large differential pressure capability

High liquid carryover tolerance

Large inspection ports allow for easy internal inspections

Orifice to drain pump completely when shut down

Operates As A Vacuum Pump & Compressor With A Discharge Pressure Range of 36 psia (2.5 bar abs.)

Some applications require vacuum and compression in one process. Instead of handling the gas with two separate machines, our liquid ring vacuum pump and compressor models can do the job with only one pump - reducing cost and simplifying installation.

Flexible Installation & Quiet Operation

The unique inlet configuration allows for both top and side inlet arrangements to accommodate low headroom installations. In installations where space is limited, the top discharge capability of the NASH 2BE4 allows the use of a top mounted discharge separator that saves floor space and eliminates the need for a trench. 2BE4 pumps are amazingly quiet during operation. Sound levels of 72 to 85 dB(A) (measured at a distance of 3.3 ft (1 meter) from the source) have been recorded for even the largest of the pump models.

Designed To Operate In Demanding Environments

Designed to operate in demanding environments like the paper, power, mining, sugar, and chemical process industries, these pumps offer durability and reliability at a low cost of operation. The standard polyisoprene lining on the pump body resists aggressive process gases and liquids to provide exceptional corrosion resistance. The polyisoprene lining also consumes less energy than the equivalent unlined pump. For added corrosion resistance, stainless steel internal components are available in certain models.

Technical Data

2BE4 Performance Chart

Suction Capacity: 1,150 to 18,900 ACFM (1,950 to 32,100 m3/h)

Vacuum Range: to 4 inHgA (to 135 mbar abs.)

Discharge Pressure Range: 36 psia (2.5 bars abs)

Differential Pressure: to 22 psi (to 1.5 bar)

Shaft Seals: Stuffing box (standard)

Mechanical Seals (single acting / double acting) on request

Materials of Construction: Ductile iron, stainless steel, combination of both materials