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    LG vacuuum pump
    LG vacuuum pump
    Sliding vane rotary vacuuum pump
    2X Sliding vane rotary vacuuum pump
    XD Sliding vane rotary vacuuum pump
    Water ring vacuuum pump
    2SK Two-stage Water ring vacuuum pump
    SK Water ring vacuuum pump
    SZ Water ring vacuuum pump
    2BE Water ring vacuuum pump
    Piston vacuuum pump
    WLW Oil-free vertical Piston vacuuum pump
    Roots vacuuum pump
    ZJ Roots vacuuum pump
    System
    JZJS Roots vacuuum pump System
    JZJX Roots vacuuum pump System
    JZJW Roots vacuuum pump System
    J2SK JSK J2BE Closed cycle System
    Blow Molding Machine
    YX1200 Large hollow blow molding Machine
    WUXI CITY SIFANG VACUUM EQUIPMENT CO.,LTD.
    WEB:http://www.jessicakmiec.com
    E-MAIL:sfpumps@163.com
    TEL:0510-85990421 85990035
    FAX:0510-85993842
    ADD:No.48 Changkang Road, Mashan, Binhu District, Wuxi
     
    Products
    Contents brief introduction
    2BE series

    Instruction of the principle of water ring vacuum pumps

            

     
    Water ring vacuum pump (referred to as water ring pump for short) is a kind of rough vacuum pump, which can obtain 4~8kPa ultimate pressure for the single-stage pump, and 2~4kPa for 4 ~ 8kPa for the two-stage pump.
    Water ring pump can be widely used in many technical processes in the petroleum, chemical, machinery, mining, light industry, paper-making, power, metallurgy, medicine, food and other industries and municipal and agricultural sectors, such as vacuum filtration, vacuum feeding, vacuum degassing, vacuum evaporation, vacuum concentration, vacuum resurgence, etc.

     
    As the gas compression process of the water ring pump is under isothermal condition, the flammable and explosive gases can be exhausted, as well as gases containing dust and water; therefore the application of the water ring pump is growing.
    The figure is the functional diagram of water ring pumps. The water ring pump consists of the impeller, pump body, suction and exhaust tray, water ring formed by water at the inner wall of pump body, air entry, air outlet, auxiliary exhaust valve, and other components.
    The impeller is eccentricly installed in the pump body. When the impeller rotating by the direction showed in the figure, the water entering the body of water ring pump impeller pump body is thrown around by the impeller, and as a result of centrifugal force, the water forms a closed water ring  constant thickness which is similar with the shape of the pump chamber. The internal surface of the upper part of water ring pump is exactly tangental to impeller wheel hub, and the internal surface of the lower part exactly contact the top of vanes (in fact, vanes are inserted into the water ring for a certain depth). At this time, a crescent-shape space is formed between the impeller wheel hub and the water ring, which is divided into several small chambers with same number of vanes by the impeller. If regard the  of upper part of the impeller as the starting point, when the impeller rotating for 0~180, the capacity of the small chamber gradually increases, and pressure continuously gets down. As the chambers are connected with the air entry of the suction and exhaust tray, when the pressure in the small chamber space is lower than that in the container in which the gas is pumped, according to the principle of gas pressure balance, the pumped gas is continuously drawn into the small chamber, that is, the pump is in the process of suction. When the suction is completed, the small chamber is isolated from the air entry. The capacity of the small chamber is gradually reduced, the pressure continuously increases, that is the pump is in the process of compression. With the pressure of the compressed gas reaches the exhaust pressure in advance, it will be exhausted from the auxiliary exhaust valve. The capacity of the small chamber which connected with the air outlet is further reduced, and its pressure further increases. When the gas pressure is higher than the exhaust pressure, the compressed gas will be exhausted from the air outlet. In the continuous running of the pump, it continuously repeats the process of suction, compression, and exhaust, so as to achieve continuous pumping.
    In the water ring pump, the auxiliary exhaust valve is a special structure, and generally, it is a rubber ball valve. It is for eliminating the over compression and insufficient compression in the operation of the pump. The two phenomena will cause excessive power consumption. As the water ring pump does not have a direct exhaust valve, and exhaust pressure is always fixed, the compression ratio of the water ring pump is determined by the stop position of the air inlet and the initial position of the air outlet, however, the two positions are fixed;
    therefore it can not meet the needs of the variable suction pressure. To solve this problem, in general, a rubber ball valve will be equipped under the air outlet, so that when the pressure in the pump chamber reaches exhaust pressure before the time, the ball valve automatically opens and the gas is exhaust gas to eliminate the phenomenon of over compression. In general, for the design of the water ring pump, the compression ratio is
    always determined based on the minimum suction pressure to determine the initial position of the air outlet. As a result, insufficient compression is eliminated. 

    Range of use


    They are mainly applied to paper-making, chemical industry, petrochemical industry, pharmacy, food, metallurgy, building materials, electric, coal washing, cradling, fertilizer and other industries for pumping air or other gases which are not soluble in water, free of solid particles and non-corrosive. As they adopt the single-stage and single-acting structures, pumps of this series possess compact structures, and are easy to maintain, reliable to use, as well as energy-efferent.

    Installing dimension drawing


     

    Type 

    a

    b

    c

    e

    f

    g

    H

    I

    m

    n

    s

    k

    Φ

    d

    w

    t

    2BEA-253-0

    1395

    1245

    799

    1030

    215

    755

    400

    675

    262.5

    105

    80

    465

    28

    70

    20

    74.5

    2BEA-303-0

    1580

    1360

    825

    1185

    230

    910

    475

    790

    315

    165

    205

    670

    35

    100

    28

    106

    2BEA-353-0

    1745

    1570

    930

    1370

    285

    1050

    560

    910

    335

    165

    245

    800

    35

    120

    32

    127

    2BEA-403-0

    2170

    1865

    1120

    1625

    335

    1265

    670

    1110

    355

    200

    285

    950

    42

    140

    36

    148

     

    Performances and specifications


    Model Minhpa (m3/min) Displacement suetion Capacity Maxpower kw  Motor Power  kw
    Speed r/min
    Weight kg  Size L×W×H mm
    Pressure 60hPa Pressure 100hPa Pressure 200hPa Pressure 400hPa
    Air  saturation Air Air  saturation Air  Air  saturation Air  Air  saturation Air
    2BEA-253-0 33 14.1 20.0 19.5 23.8 25.6 28.1 28.3 28.8 37.2 45 565 890 1395×680×755
    15.1 21.8 20.4 24.8 26.7 29.0 29.5 30.1 39.8 45 590
    20.1 28.4 25.8 31.3 31.9 34.6 34.3 35.1 44.5 55 660
    24.3 34.3 30.3 36.8
    36.5
    39.6 38.3 39.6 53.8 75 740
    27.9 39.3 34.2 41.5 40.6 44.1 42.9 43.7 65.2 75 820
    30.2 42.6 36.7 44.7 43.5 47.2 45.8 46.7 75.1 90 880
    2BEA-303-0 33 24.3 34.0 31.3 38.5 38.9 42.5 41.0 41.8 52.0 75 472 1400 1580×1010×910
    27.6 38.5 34.2 41.5 40.3 44.3 42.5 43.5 55.0 75 500
    30.8 42.8 37.1 45.0 43.3 47.3 45.7 46.6 58.0 75 530
    35.8 49.9 42.6 51.6 48.8 53.3 50.3 51.3 65.0 75 590
    40.5 57.5 48.7 59.0 55.0 60.0 57.0 58.0 80.0 110 660
    42.5 60.0 51.8 62.7 58.3 63.5 61.6 62.8 91.0 110 710
    2BEA-353-0 33 26.5 37.4 38.3 46.4 49.0 53.5 53.8 54.9 64.5 90 372 2000 1745×1160×1050
    35.8 50.6 45.3 54.9 53.8 58.6 57.2 58.4 77.0 110 420
    43.6 61.5 52.8 63.9 61.0 66.5 63.7 65.0 86.0 110 472
    46.5 65.6 55.7 67.6 63.0 68.7 66.4 67.7 92.5 110 490
    46.6 65.8 56.3 68.2 65.0 70.9 67.6 69.0 94.5 132 500
    49.5 69.9 60.1 72.8 68.5 74.7 71.5 73.0 105 132 530
    56.7 80.0 68.4 82.8 77.0 84.0 80.2 81.8 126 160 590
    2BEA-403-0 33 44.8 63.3 60.0 72.5 73.7 80.4 78.5 80.0 102 132 330 3300 2170×1370×1265
    57.4 81.0 70.6 85.5 82.1 89.6 85.5 87.6 116 160 372
    67.3 95.0 81.4 98.5 93.5 102 97.0 99.0 136.5 185 420
    78.7 110 95.0 115 107.2 116.8 110 12.3 168 200 472
    85.1 120 103 125 117.1 127.6 123.5 126 212 250 530

    Characteristic curve


     
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    Add:No.48 Changkang Road, Mashan, Binhu District, Wuxi Tel:0510-85990421 85990035
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