KWP-P(remium) washing pressHigh tech for washing and separation of organic material out of rough and fine screenings filtering

KWP-P(remium) washing pressHigh tech for washing and separation of organic material out of rough and fine screenings filtering

KUHN KWP-P(remium) washing pressThe Premium-washing press is used as an addition to further treatand dewater organic matter after the pre-separation of screenings.

The washed waste material is then compressed andremoved.

The benefits of this devise have been provenin local and industrial wastewater treat-

ment applications and in Biomassand waste processing.

How it worksThe KUHN KWP-P washingpress is most commonlysupplied with material afterrakes separate the screening

from the flow, and screws or beltconveyors transport the waste

material directly to the KWP-P.Another common way to supply the

KWP-P is to use sloped open channels formaterial transport. The size of the KWP-P receiving

tray is properly sized based on the needed capacity.

An extremely strong hollow screw conveyor with 20-30 mm thicksteel blades pushes the material into the washing zone whereforward and backward movement loosens the material and allows forthe material to be thoroughly rinsed.

Rinsing fluid is forced throughthe hollow screw and injectedinto the waste material withinthe rinsing zone. Due to thisradial injection, the separationof the organic matter isenhanced and additional over-head jets further optimized therinsing.

The washed waste material isthen compressed in a second stage screw, and therefore excess wateris removed. A chromium coating on the compressing stage of thescrew allows for extremely high compression of the material whilemaintaining its performance with minimal wear.

After the material is compressed, the moist waste product is trans-ported through piping, attached to the end of the compression stage,to storage containers. The length of the piping for the compressedwaste material is recommended to be between 6 and 10 meters.

The KUHN washing press KWP-P is fitted with a very robust separa-tion screen over its entire length along the bottom of the screw. Thisallows for excellent drainage of the washing fluid from the press, andin addition with a sloped drainage pan underneath the device, thedrainage performance is outstanding. Due to the low maintenancerequired and minimal wear of the machine, the KWP-P has becomea consumer favorite.

As a washing fluid we recommend cold pre-filtered water. For anindustrial setting, warm pre-filtered water with addition of adegreaser is recommended.

The washing fluid consumption depends on the size of the machineand the desired level of washing.

Covers for minimizing odors and serving as a hygienic barrier are alsoavailable.

Performance and ExecutionThe KUHN KWP-P washing press consists of a sequence of essentialcomponents including the receiving tray, the single unit hollow screwfor washing and an attached screw for compression, the enclosedwashing and compression zones, a bearing housing, a geared motor,and a screen for the water to drain out of the washing and compres-sion zones into a sloped drainage pan.

The bearing housing is located between the motor and the mainmachine housing. It includes thrust and ball bearings, and the entirebearing housing is using a special seal to remain watertight.

The premium model of the KUHN KWP-P washing press has thefollowing outstanding features:

• Multiple functions: washing, compression and dewatering, and transportation

• Washing potential up to 95%

• Dewatering up to 50% (depending on screenings)

• Extravagant wash system due to the hollow core screw

- Chromium coatings for wear protection

- Very large drainage area due to the special separation screen along the bottom of the machine (ideal for open channel feeding system).

• Ingenious bearing system

• Removable inspection cover in compression zone

• Powerful and robust design

• Easily removable drainage pan

Multiple functions: washing, compression and dewatering, and transportation • Washing potential up to 95%Dewatering up to 50% (depending on screenings) • Extravagant wash system due to the hollow core screw

Chromium coatings for wear protection • Ingenious bearing system

Sectio n A-A thro u g h the washin g zo ne

KUHN GMBH · Franz-Kuhn-Straße 1-3 · 74746 Höpfingen, Germany · phone: +49 (0) 62 83 / 22 01-0 · fax: +49 (0) 62 83 / 22 01-88 · info@kuhn-gmbh.de R03/1

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KWP-P(remium) washing pressHigh tech for washing and separation of organic material out of rough and fine screenings filtering

1 Receiving tray 8 Strong screw blades (20 to 30mm thick)2 Very rigged machine housing 9 Bearing housing3 Compact solenoid valve system 10 Premium hollow screw shaft4 Removable maintenance cover 11 Reinforced compression screw to reduce wear5 Second stage material compressor KVR (optional) 12 Elevated screw position (no contact to housing)6 Catching pan 13 Intensive Turbo-wash KWP-W (optional)7 Large separation screen

Type Max. throughput(Raw screenings)

LengthFeed hopper

Connections sizeDischarge pipe (PN10)

ConnectionWash water

KWP-P-150 approx. 1,4 m3/h 600...1200 mm DN150 G1/2"KWP-P-250 approx. 2,8 m3/h 600...2000 mm DN250 G1/2"KWP-P-300 approx. 4,5 m3/h 600...1600 mm DN300 G3/4"KWP-P-400 approx. 8,0 m3/h 600...1200 mm DN400 G3/4"

1 2 3

7 8

10

11

12

9 13

6

4 5

Rinsing fluid

Optional additions• Turbo wash KWP-W

• Second stage material compressor KVR

• Debris shredder KRZ

• Fully reinforced screw

Drive train

Materials

Other materials on request.

Pressure min. 3.5 barQuality Filtered water (Filter fineness ≤ 300 μm)

Electrical safety IP 55Transmission Flat or bevel gears

Motors / fittings Standard materialsMachine housing AISI 304 stainless steelScrew Special steel