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Overview
The 2BE series water - ring vacuum
pumps are single - stage and single
- acting. The distribution plate and
impeller adopt optimized design.
They feature no friction surfaces,
oil - free lubrication, compact
structure, reliable operation,
convenient use and maintenance, a
wide selection range, and simple
structure with easy maintenance.
These pumps are mainly used for
pumping gas without particles. The
working medium is normal -
temperature clean water. For special
requirements, other media such as
acid and alkali can also be used as
the working fluid. The gas volume
range is 4.8 - 450m³/min, the
ultimate vacuum degree is 33hpa or
160hpa, and the efficiency is 40 -
65%. They are widely used in
industries such as power, chemical,
coal mining, papermaking, plastic
machinery, environmental protection,
medical, pharmaceutical, food, and
packaging.
1. Single - stage and single -
acting. The distribution plate and
impeller adopt optimized design,
featuring high efficiency, simple
structure and easy maintenance.
2. The flexible valve plate
automatically adjusts the exhaust
angle, enabling the pump to operate
efficiently under different suction
conditions.
3. The impeller end face adopts a
hierarchical design, reducing the
pump's sensitivity to dust in the
medium and water - quality scaling.
4. The stuffing gland is of split -
half structure, facilitating the
replacement of packing.
5. Small - sized pumps are available
with two types of shaft seals:
packing seal and mechanical seal.
6. For rotors of pumps with an
impeller diameter larger than 200mm,
a shaft sleeve is installed at the
shaft seal position to protect the
shaft from wear.
7. The bearing structure is
improved, with high axial and radial
load - bearing capacity and precise
positioning, ensuring the reliable
operation of the pump.
8. Equipped with a heat exchanger to
realize the recycling of the working
fluid, reducing water consumption
without the need for an additional
pressurization device.
9. When an anti - cavitation device
is installed, it can effectively
improve the pump's anti - cavitation
ability when operating at high
vacuum.
10. A specially - designed steam -
water separator is used for
separation, effectively reducing
resistance and noise.
11. The smooth surface of the wetted
components can effectively reduce
sedimentation and the scaling
process.
12. For pumps of specifications 30 -
70, the pump body and side cover are
connected by flanges, ensuring
overall rigidity and vibration
resistance.
13. Wide suction range. When
equipped with a primary ejector, the
suction pressure can be lower than
33hpa.
Working Principle
he impeller is eccentrically
installed in the pump body. Before
starting, a certain height of water
is injected into the pump. When the
impeller rotates, the water forms a
rotating water - ring on the inner
wall of the pump body under the
action of centrifugal force. The two
end - faces of the blades and the
plane of the distributor form a
sealed cavity. During the first half
of the rotation (when passing the
suction port), the volume of the
sealed cavity gradually expands, and
gas is sucked in through the suction
port. During the second half of the
rotation (when passing the exhaust
port), the volume of the sealed
cavity gradually shrinks, and gas is
discharged through the exhaust port.
In order to maintain a constant
water - ring, water must be
continuously supplied to the pump
during operation.
Drive Modes
Direct connection with the
motor, belt drive, and reduction
gearbox.
Common Pressure
Unit Conversion Table
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