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Steel gravity valveless filter

Steel gravity valveless filter

Place of Origin : China
Brand Name : Loren
Certification : ISO9001:2008
Model Number : LSM/LRM-20-175
Hold time for backwashing : 5 minu.
water lost for end : 1500m, 1700m, 1900m (Three option choice )
Backwashing expansion height : 700×40% +100mm safe height
Filter media layer height: : 700mm with support layer thickness 270mm
Average filtering speed : 10m/h
Backwashing intensity : 15L/m²•s
Water incoming turbidity : DN 800mm~3200mm
Cylinder body material : no more than 20 degree (For surface water purification)
Water output turbidity : no more than 3 degree (For surface water purification)
MOQ : 1 Set
Packaging Details : standard export or as per buyer's demand
Delivery Time : Within 45 days for container order
Payment Terms : T/T; Paypal; L/C at sight, others
Supply Ability : 20 set per month
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Steel gravity valveless filter

Description:

Gravity valveless filter is an ideal water treatment equipment due to its diversified applicant on surface water purifying, purifying iron and manganese from underground water, by pass flow circulating water purifying , removing suspend impurities of production wastewater, secondary filtration of organic wastewater by biological and secondary settlement treatment as well as indoor swimming pool water filtration.

Currently, our mill has two series valveless filter

One is square shape filter tank LSM-LL model with water filter capacity range from 20mm3/h to175m3/h,

The other is round shape filter tank LRM—Ⅱ,LRM—Ⅲ model with water filter capacity range from 20mm3/h to 80 m3/h, 200mm3/h to 750 m3/h respectively model over 200m3/h need site mounting and coating , after that it can run smoothly after adding filter media.

All our LSM—Ⅱ,LRM—Ⅱ,LRM—Ⅲ series filter have no valve by running it as per

Water power to save running charge , integrated unit and auto control system make it

Compact, easy management, stable and safe function with wide fitting for mounting

Condition and roof cover to have good sanitary protection.

Type character meaning description:

LSM/LRM-20-I/II/III-1700

LSM/LRM represents Loren square filter model and round filter model

20- Means each group filter capacity: 20 M3/H

I/II/III means the tank number of the group filter

1700 means the maximum permissible value of water head loss

Principle, design parameters

Principle:

Raw water enter filter tank via inlet tube and carry on filtering from upper to bottom, the clean water enter into water tank via connecting tube, and the overflow clean water will enter clean tank through outlet tube. The filter layers keep SS continuously with resistance increased gradually to cause the siphon tube water level increase accordingly till reach siphon auxiliary tube nozzle, the water begin slowing down by suction of air in the siphon tube via air pipe till the vacuum reach siphon value, this time the water will flushing through filter layer from bottom to up to carry backwashing till the clean water tank water level reach to siphon stop tube , the air enter siphon tube to prevent further siphon and the backwash stopped to finish one circulation and then another circulation. Which make no sense to add backwashing tower to save cost and room.

For the larger size, we added each group with three series of maximum water loss: 1500mm, 1700mm, and 1900mm to facilitate high head distribution for the water purifying plant.

Design Parameter:

1. Average filtering speed:10m/h

2. The average intensity of backwash:15L/M2.S

3. Hold time for backwashing:5 minutes
4. water lost for end:1500m, 1700m, 1900m (Three option choice )
5. Backwashing expansion height:700×40% +100mm safe height
6. Filter media layer height:700mm with support layer thickness 270mm
7. Water incoming turbidity :no more than 20 degree (For surface water purification)
8. Water output turbidity:no more than 3 degree (For surface water purification)


Structure , specification

1. LSM-II-20/30/40/50/60/80 Steel gravity valveless filter

2. LRM-II-100-175 Steel gravity valveless filter



LSM type steel filter specification data table

Each unit with two square shape tank with finish water lost:1700mm

Model

volume/filter area(m3/h*m2)

Body Dimension

G.W. with water

Media volume

/weight(m³/T)

Backwash flow 15L/m²·S

LSM20-Ⅱ-1700

20/2.13

2000×1100×4340

16.2

2.07/3.62

18.75

LSM30-Ⅱ-1700

30/3.19

2000×1630×4402

23.1

3.09/5.42

28.03

LSM40-Ⅱ-1700

40/4.24

2165×2000×4442

29.9

4.11/7.20

37.40

LSM50-Ⅱ-1700

50/5.33

2710×2000×4442

36.5

5.17/9.05

46.88

LSM60-Ⅱ-1700

60/6.39

2600×2500×4502

44.2

6.20/10.85

56.25

LSM80-Ⅱ-1700

80/8.50

3600×2900×4547

58.8

8.25/14.43

75.00

LSM100-Ⅱ-1700

100/10.52

2100×2600×4512

37.7

10.2/17.86

93.90

LSM125-Ⅱ-1700

125/13.13

2255×3000×4558

46.4

12.74/22.29

116.98

LSM150-Ⅱ-1700

150/15.67

2705×3000×4558

54.7

15.20/26.60

139.52

LSM175-Ⅱ-1700

175/18.40

3160×3000×4558

63.3

17.85/31.23

163.50


LRM20--1700 LRM80--1700 steel filter specification data

Item

Model

LRM-20-Ⅱ

LRM-40-Ⅱ

LRM-60-Ⅱ

LRM-80-Ⅱ

Capacity (M3/H)

20

40

60

80

Outline size(m)

L

3600

4400

5400

5900

W

2100

2500

3000

3200

H

6800

6800

6800

6800


Tube size

(mm)

Inlet DN Dg1

100

150

200

200

Height H1

4710

4810

4810

4810

Out let DN Dg2

100

150

150

200

Height H2

400

450

500

500

Drain tube DN Dg3

300

300

400

400

Height H3

360

360

460

460


Tube pot size

(mm)

Ø1

1400

1800

2240

2460

Ø2

900

1000

1000

1000

c

1134

1350

1540

1636

e

655

780

890

945

f

755

950

1125

1225

g

215

250

325

355

Weight(Metric tons )

21.9

35.7

50.6

65.7

Comment:

1. The height in the table based on foundation with tolerance:±0.001

2. LRM-200-Ⅱ-1900/1700/1500 LRM-500-Ⅱ-1900/1700/1500 steel filter parameter, touch us for detail .

Filter Media Capacity

Model

Quartz DN

Gravel cushion grain DN

1~2mm

2~4mm

4~8mm

8~16mm

LRM-20

2.7

0.24

0.24

0.35

LRM-40

4.7

0.42

0.42

0.60

LRM-60

7.3

0.63

0.63

0.95

LRM-80

9.0

0.80

0.80

1.15

Comment: the table for weight calculation , ordering need added 5~10% consumption.

Model Selection notice

1.Model :LSM20—Ⅱ—1700 to LSM80—Ⅱ—1700L six model all have both B and B′ water outlet tube, user can connect either one of the tube and stop another one ,

While from model LSM100—Ⅱ—1700 to model LSM175—Ⅲ—1700 whose two outlet tubes of each group all need connecting with each other;

model from LRM200—Ⅱ to DBL500—Ⅱ or model from LRM300—Ⅲ to LRM750—Ⅲ,whose inlet and outlet tube position not in line with filter wall , please specify it and let us know the position.

2.This series of steel filter can be suitable for flexible tar sands foundation whose infrastructure information and practices, if needed , touch us directly.

3.The close distance between two ground steel filters can be 600mm with both height tolerance ±5mm, total filters mounting height tolerance control±10mm.

Supply and install range

1.Filter body includes all inside parts.

2.Filter outer parts like siphon and drainage water tubes and tube supports

3.The connecting pipeline, valves and supports among same group filter tanks.

4.Steel filter drain clean valves, short pipes and elbows.

Media and support media arrangement method

1. Clean all impurities after mounting the filter, then mark each proof height line of each media and support media in filter inner wall, double check each grain DN range to fill them from large to small for real distribution.

2. Carry on support media arrangement from bottom average-thickness support media (material) to upper in line with all formal marked line.

3. After finishing support media arrangement, then distribute filter media same as before carefully to make sure its proportionate arrangement in line with marked line by adjusting them with blade.

Mounting description:

1. When put filter into site position, must check level again to make it mounted smooth and stable, it will be welded into the bottom steel plates and fixed.

2. Water tank bolted with filter roof beam support to make two weirs into same level height thus to safeguard the water distribution averagely.

3. Connecting flange and screw with siphon tube system must no air leakage and strictly control the height of siphon and auxiliary tube proof position.

4. Besides special inside corrosion-proof treatment, the outside surface also need do color stipulated coating.

Operation description

1. First running, use rubber tube to inject clean water into water tank to make water going through filter from bottom to upper via connecting tube to drain out the air in filter.

2. First backwashing , adjust the washing intensity into 1/4 of the siphon reduce tube DN position via intensity adjusting device , after that , increase the opening degree gradually till regulated value.

3. During operation, must check if its filter media in level position or being polluted esp.

when as by pass filtering circulated cooling water whose filter media is easy to be polluted by algae, if found , must remove the polluted media layer around 100mm thickness and then change it as new filter media.



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