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Vacuum Drum Washer

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vacuum drum washer

CNBM Vacuum Drum Washer

  • Large yield per unit area
  • high vacuum degree and high-density of feeding;
  • increase effective filtration area.
  • improve effects of mixing washing.
  • guarantee stable operation and easy maintenance.
  • reduce power consumption.
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Vacuum drum washer is a common pulp washing equipment for bleaching workshop and extraction of pulp like wood pulpstraw pulp and other types of pulp. Vacuum drum washer is the key technological equipment for paper industry to solve the problem of wastewater pollution and implement alkali recovery project.

Vacuum Drum Washer Functions

Vacuum drum washer is mainly composed of drum, tank, plane distribution valve, washing device, peel pulp device, net-washing equipment, transmissions and screw conveyor, etc. It can be used in the single or multi series. Once the drum turns a circle, drum washer can complete three processes including filtration, washing, and stripping of pulp.

To be more specific, the surface of washer drum is divided into several compartments, each compartment is connected with the corresponding compartment of valve seat through filtrate flow. Valve core divides whole drum surface into the empty zone, venting zone and peel pulp zone. The drum rotates in a tank containing pulp, pulp through the drain port and pass vacuum filtration area, peel pulp area and vending area. As a result of vacuum suction, the liquid in the pulp is pumped out of the filtrate flow path and the distribution valve. The pulp is adsorbed on the outer surface of the drum body and peeled off by the doctor blade to achieve the suction, stripping and exhausting processes of the pulp

Vacuum Drum Washer Manufacturer – CNBM

As the leading vacuum drum washer manufacturer in China, we can provide advanced products. Compared to other kinds of washer, vacuum drum washer can produce pulp with low residual alkali and extraction rate of black liquor, which powerfully impelled the development of alkali recovery and control the pollution of papermaking black liquor. So that attains the discharge standards of wastewater, protect the environment, benefit the nation and people.

Vacuum drum washer applies for extracting black liquor from cooking pulp and concentrating after bleaching, specifications as following:

  • Single production capacity: wood pulp 100-600t / d, bamboo pulp 75-400t / d, wheat straw pulp 50-180t / d
  • Tandem washer production capacity (extraction of black liquor):
    Air-dried wheat straw pulp 1-1.5t/m2.d air-dried pulp 1.5-2t/m2.d air-dried wood pulp 3-4t/m2.d
  • Vacuum degree:  0.01-0.03MPa
  • Drum speed:  0.8-3r/min

Technical Parameters of vacuum drum washer

Model /ItemDrum length (mm)Drum Dia. (mm)Drum speed (rpm)Feed Consistency(%)Discharge Consistency(%)Capacity( black liquor extraction)(Kt/m2.d)
Straw /Bagasse pulpBamboo pulpWood pulp
AMXJ35320035000.8~31.5~2.58~1252.5~87.5175~210210~280
AMXJ40365035000.8~31.5~2.58~1260~100200~240240~320
AMXJ45410035000.8~31.5~2.58~1267.5~112225~270270~360
AMXJ50455035000.8~31.5~2.58~1275~125250~300300~400
AMXJ55500035000.8~31.5~2.58~1282~137.5275~330330~440
AMXJ60545035000.8~31.5~2.58~1290~150300~360360~480
AMXJ65520040000.8~31.5~2.58~1298~162.5325~390390~520
AMXJ70560040000.8~31.5~2.58~12105~175350~420420~560
AMXJ75600040000.8~31.5~2.58~12113~187.5375~450450~600
AMXJ80640040000.8~31.5~2.58~12120~200400~480480~640
AMXJ85680040000.8~31.5~2.58~12127~212.5425~510510~680
AMXJ90720040000.8~31.5~2.58~12135~225450~540540~720
AMXJ95760040000.8~31.5~2.58~12143~237.5475~570570~760
AMXJ100800040000.8~31.5~2.58~12150~250500~600600~800
AMXJ105745045000.8~31.5~2.58~12157~262.5252~630630~840
AMXJ110780045000.8~31.5~2.58~12165~275550~660660~880
AMXJ115815045000.8~31.5~2.58~12173~287.5575~690690~920
AMXJ120850045000.8~31.5~2.58~12180~300600~720720~960

Single machine parameter

ModelsZXIV20parameter
filter aream220
Feeding pulp concentration%1.0-2.0
Outlet pulp concentration%8~12
Drum specificationmmФ3000×2300㎜
capacityadt/d106adt/d dissolving pulp(bleached)
powerKW11(virable-frequency ac motor )
Broken HelixФ500×2300
 screw motor powerKW5.5
Spiral Speedr/min88
fan deliverym3/h2000
fan discharge pressurepa1960
Power for motor of fankw2.2

Unit parameter

ModelsZXIV20parameter
filter aream220
Feeding pulp concentration%1.0-2.0
Outlet pulp concentration%8~12
Drum specificationmmФ3000×2300㎜
capacityadt/d106adt/d dissolving pulp(bleached)
powerKW11(virable-frequency ac motor )
Broken HelixФ500×2300
 screw motor powerKW5.5
Spiral Speedr/min88
material clamping device specificationsФ500×2800
material clamping device powerKW5.5
material clamping device speedr/min60
stirrer device specificationsФ500×2800
stirrer device powerKW7.5
stirrer device speedr/min88
fan deliverym3/h2000
fan discharge pressurepa1960
Power for motor of fankw2.2