液環真空泵

大氣量，2BE4

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

NASH 2BE4液環真空泵和壓縮機系列經過優化，效率比以前的2BE型提高了6-8％。2Be4基于久經考驗、可行的平圓盤液環真空泵設計，具有聚異戊二烯襯里機體，靈活的*口和排放口連接，以及能夠提高性能和可行性的大型檢測口。氣量范圍從1,200至19,000 ACFM （2,000 至32,300 m3/h） 2BE4非常適于造紙、電力、采礦和化學加工業等苛刻環境。

描述

可行、快效、性能優佳

2BE4液環真空泵和壓縮機系列是經過證明的2BE3型的升級產品，其設計旨在提供*過以前型號的性能、可行性和效率。與以前型號相比，2BE4效率提高8％，且降低了維護要求。

真空能力

2BE4泵可在整個真空范圍內快效運行，無需變動泵的內部構件。當配備中心護罩時，可以實現一機兩用，差別可達12 inHg (400 millibar)。這樣做的優點很明顯，因為可以減少使用的真空泵數量，從而節省了空間和安裝成本。

基于經過證明的平圓盤2BE設計，堅固耐用且低維護

Nash的平圓盤液環真空泵/壓縮機設計于二十世紀初在德國獲得自主研發設計，已向全球數千個工廠提供，具有經過證明的性能、可行性，使您高枕無*。憑借不斷創新，我們的自主研發設計設計具有以下特點：

?圓盤具有可變端口，因此泵的性能在整個工作范圍內得到優化。

?大壓差能力

?液體殘留物耐受性高

?大型檢查端口便于內部檢查

?關閉時，孔口可以*全排空泵

作為真空泵和壓縮機運行時，其排放壓力范圍為36 psia（2.5 bar abs.)

某些應用需要在某道工序中抽真空和壓縮。我們的液環真空泵和壓縮機可以在一臺泵中處理氣體，而不需要在兩臺獨立的機器中完成 - 降低了成本并簡化了安裝。

安裝靈活，運行噪音低

獨特的入口配置允許在頂部和側面布置入口，以適應低凈空安裝。在空間有限的安裝中，NASH 2BE4可在頂部安裝排放分離器，從而節省占地面積且無需溝槽。2BE4泵在運行期間非常安靜。即使是更大型的泵，聲級記錄也只有72至85 dB(A)（距離聲源3.3英尺（1米）處測量）。

專為要求苛刻的環境而設計

設計為在造紙、電力、采礦、制糖和化學加工業等苛刻環境中運行，這些泵以低運營成本提供耐用性和可行性。泵體上的標準聚異戊二烯襯里可抵抗腐蝕性工藝氣體和液體，從而提供出色的耐腐蝕性。與同等無襯層泵相比，聚異戊二烯襯里消耗的能量也更少。為了增加耐腐蝕性，某些型號采用不銹鋼內部組件。

技術數據

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

?  真空范圍：至4.7 inHgA（至160 mbar abs.）

?  排氣壓強范圍：36 psia（2.5 bars abs)

?  壓差： 至22 psi（至1.5 bar）

?  軸密封：填料函（標準）

按要求的機械密封（單端/雙端）

?  結構材料：球墨鑄鐵、不銹鋼、兩者結合

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