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• TYPE-UF TUBULAR FILTER Precoat type

1. Equipment features
2. Structure
3. Operation
4. Use
5. Major items

Coolant liquid filter for machine industries

This is a pre-coat type of precision filter used to recycle polishing and grinding liquid in machine industries.
Many of these filters are shipped as part of large-scale concentrated coolant systems capable of performing processes ranging from filtration to final dewatering.

Equipment features

• This precision filter performs pressure filtration by using a filter cloth on which D.E. powder is pre-coated.
  From the start of filtration, the filter can capture and separate solid particles in units of microns.
• The instantaneous back-pressure washing system can efficiently wash the filter cloth in a very short time.
• The filtration liquid is used for washing filter element.
  The filter equipment discharge no washing drainage because it recovered and reuses the back-washed slurry liquid after dewatering.
• The filter equipment is constructed to maximize the effective filtration area.
  This increases the filtration capacity and enables the filtration of a large amount of raw liquid.
• This filtration system features a simple flow of liquid and easy operation, and is thus suited for automation.
  Once the system is fully automated, the cost of liquid control can be significantly reduced.

Structure

Operation

1. General View
2. 1.Precoating Procces
3. 2.Filtration Procces
4. 3.Backwash Procces

① TUBULAR FILTER ② EXCELER FILTER ③ D.E. Powder Feeder ④ Clean Tank ⑤ Dirty Tank ⑥ Precoat Tank ⑦ Drain Tank ⑧ Filtration Ponp ⑨ Diewatering Pump

1.Precoating Procces

• 1. A preset amount of D.E. powder is fed from the D.E. powder supplying equipment to the precoat tank.
• 2. The pre-coat liquid containing mixed and dispersed D.E. powder is pumped up to the UF type tubular filter by the filtration pump, filtered by the filter cloth, and then returned to the precoat tank.
• 3. This pre-coat operation continues for about 20 minutes.
  As a result, a uniform layer of D.E. powder (precoat layer) is formed on the surface of the filter cloth.

2.Filtration Procces

• 4.At the end of the precoating process, the suction pipe of the filtration pump is switched from the precoat tank to the dirty tank.
• 5.Liquid in the dirty tank is pumped to the tubular filter by the filtration pump, pressure-filtered through the pre-coat layer, and then sent to the clean tank.
  Filtration through the pre-coat layer can help keep the filter cloth clean and achieve high filtration accuracy from the start of filtration.
• 6.Filtration lasts about 10 hours, depending on the quantity of liquid.
  The filtration process ends at filtration timer activation or when the backwash button is pressed.

3.Backwash Procces

• 7.At the end of the filtration process, all automatic valves close and the filtration pump stops.
• 8.The backwash air valve then opens to compressed air into the filter body.
  The compressed air expels filtration liquid on the filter top via blasts from inside to outside of the filter cloth, in order to clean it.
  The backwash liquid used for washing is discharged into the drain tank.
• 9.The backwash liquid discharged into the drain tank is filtered and dewatered by the EXCELER FILTER.
  The filtrate is sent to the dirty tank and recycled.
  The dewatered solid contents are discharged to the outside.
• 10.At the end of backwashing and draining, the filter equipment returns to the first filtration process and restarts from the precoat process.

Major items

TYPE (□Part Material symbol)	UF-45□	UF-55□	UF-65□	UF-75□	UF-90□	UF-105□	UF-120□	UF-120H□
TUBULAR FILTER Filtration area(m2)	2.4	3.6	4.8	7.2	10.8	15.2	20	25
A(㎜)	2500	2850	3100	3250	3400	3500	3750	4000
B(㎜)	450	550	650	750	900	1050	1200	1200
C(㎜)	4000	4350	4600	4950	5300	5400	5750	6000
D(㎜)	1500	1500	1500	1700	1900	1900	2000	2000
E(㎜)	8000	8400	9500	10000	11500	13200	16000	18000
F(mm)	1900	2400	2700	2700	2700	3000	3000	3000
AIR TANK(L)	230	400	600	800	1000	1500	2000	2000

1) The filtration capacity is not shown here as it depends on the liquid specifications.
2) The required compressed air is 0.45 MPa minimum and 0.2Nm³/min. (ANR).
3) Dimensions C, D, E, and F are for reference only, as said dimensions depend on the quantity of liquid to be filtered and the layout of equipment.

Material symbol (□Part)	F	S
Filter body	SS400	SUS304
Other(Piping etc...)	SUS400,SGP	SUS304

POWDER FEEDER

There are three methods of following a feature Each powder feeder, you can choose the best method for your application.