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Company name: Changzhou Peide Water Treatment Equipment Co.,Ltd.
Add: No.206 Qingyang North Road, Changzhou, Jiangsu province, China
Tel: +86-519-85500155
Fax: +86-519-85262955
E-mail:Sales1@cnpeide.com
Home -> Products -> Back flush filter
Backflush Filter for High Viscosity Liquid
Product Model:DTFLQ
Brief introduction
Backflush filter for high viscosity liquid is also known as "Bernoulli backwash filter". Backflush filter for high viscosity liquid, By linear reciprocating efficient mechanical way to automatically remove particulate impurities on the filter element surface.capable of continuous in-line filter, Backflush Filter for High Viscosity Liquid accuracy range is in 100-3000 micron, fit for water and viscous liquids filtered, for viscosity up to 30,000 CP.
When conventional backwash filters soft impurities in viscous material is frequently clogging, customers are forced to choose large backwash filters or frequent backwashing, large investment, heavy workload, a serious waste of materials.Backflush Filter for High Viscosity Liquidwith advanced self-cleaning relocation way to easy solve this kind of problem, and always maintain regular clean filter element and discharge high attempt waste impurities to reduce material waste, great advantage of poor water quality water filtration and adhesives, resins, polymers, paints, oils and other viscous materials, more efficient, Backflush Filter for High Viscosity Liquid is its significant technological advantage and high life cycle cost, gradually replacing the traditional manual backwash filter in many areas, shaker, bag, basket filter, some recoil type self-cleaning filter and so on.

Working principle
Filtering state: Liquid from the Backflush Filter for High Viscosity Liquid inlet injection, from up to down flow, through the filter element surface to flow outlet; When the filter element surface collect to a certain impurities, fixed time or set pressure tp started cleaning procedures.
Cleaning state: cylinder drive wash plate to straight action, this part of the impurities with the descending liquid through washing dish to fall into the collection chamber, to repeat washing several times to clean the filter element.
The most important part of the filters, that provides quite simple and reliable cleaning process, is a disk which is installed on pneumatic cylinder. When a disk, placed on pneumatic cylinder’s end, passes between water and filter basket, filter basket is cleaned with this movement of the disk. Flow speed of the water increases on the points around the disk and static pressure decreases pursuant to Bernoulli principle
Low static pressure creates vacuum effect on edge points of the disk and contaminants are discharged from the drainage line by being cleaned from the filter basket.


Technical Features and Benefits
1、Linear reciprocating stripped, directly stripped the impurities off the surface of the filter element.structure simple, easy open to clean and maintain
2、Online connection filtering, automatic dynamic line, end of the heavy filter element replacement and cleaning.
3、No need produce one-off abandoned filtration consumables, saving the cost of consumables and environmental treatment cost minimal filter pressure drop, flow stability, saving energy pipeline, which will help the process of continuous and stable.
4、Closed filter, to prevent leakage of hazardous materials which is conducive to safe production.
5、High concentration of emission waste impurity and recyclable , to avoid high-value materials losses
6、Variety of module combination and powerful automation modes, to meet the requirements of various filtration applications
7、Selection of the world-renowned high-quality components, high reliability, minimal maintenance, low cost fixed line

Operation Steps
Normal Operation: Water comes in through filter inlet and flows into filter basket as 90o for big particles to be decomposed. Clean water is discharged from the outlet. Washing valve is closed in this status and motionless out of the piston filter basket. (Figure 1.1)

                    Figure 1.1                                      Figure 1.2                                            Figure 1.3

Washing step-1: Filter is self-cleanable with the washing of the basket. Washing can be carried out manually, with time or pressure change control method. Washing valve is pneumatically turned on initially and wide parts, which hold on to the filter basket, are cleaned. In the meanwhile, outlet of the filtered water is not divided. (Figure 1.2)
Washing step-2: Washing valve is on in this step. It moves for two times through filter basket by pneumatic movements with piston disk. In the meanwhile, the water passes in a way preventing a friction loss in disk and basket. Flow speed increases around the disk and static pressure decreases pursuant to Bernoulli principle. Low static pressure, occurring around the disk, helps basket to be cleaned and released particles to be discharged. Clean water outlet is on in the meanwhile. After washing process is completed, washing valve is turned off and normal operation is continued. (Figure 1.3)

Filter Rinsing Pressure

Filter inlet diameter Min. water pressure during rinsing Approximate rinsing time
mm bar second
80 0.3 22
100 0.3 22
150 0.8 22
200 0.8 30
250 0.3 50
300 0.3 50
350 0.6 40
400 0.7 40
450 1 55
500 0.4 60
600 0.7 110
700 1.1 165

Main Specifications
For the liquid: water and viscous liquids (<30000cps), impurity <1000ppm
Filtration (microns):100-3000
Standard design pressure rating: 1.0Mpa, higher pressures can be customized
Cleaning pressure: 0.05Mpa Drive: Cylinder

Advantages
1、Easy maintenance and high operation reliability thanks to a simple and smart cleaning
2、system with a part, moving a little bit.
3、Stable and low pressure loss both in clean and dirty conditions.
4、Need for low washing pressure to 0,3, bar.
5、Easy installation: Backflush filter for high viscosity liquid can be carried by pipe installation, on which they are installed. Filter can be installed horizontally and vertically.
6、PVC or glass fibre reinforces polyester body material provides high corrosion resistance particularly in sea water applications. Stainless steel bodied filters can be used in fresh water applications

Applications
1、The domestic water supply, water supply and pre-filtering for industrial water supply;
2、steel, petroleum, chemical, paper, automotive, food, metallurgy and other industries beginning circulating water filtration;
3、Fist stage of circulating cooling water filtration;
4、The water reuse, waste water treatment filter;
5、Central air conditioning, boiler return early filter;
6、Municipal, green spraying, irrigation, agricultural irrigation, drip irrigation water filter early.

Model

In and out diameter

Flow rate

size

Mm

T/H

AE

B

C

D

L

FS

J

DTFLQ80

80

23

252

165

340

455

590

460

32

DTFLQ100

100

36

302

175

350

465

600

460

40

DTFLQ150

150

83

352

250

500

650

800

700

40

DTFLQ200

200

145

388

300

630

810

980

700

50

DTFLQ250

250

235

398

350

750

975

1175

1000

100

DTFLQ300

300

325

433

380

900

1160

1370

1100

100

DTFLQ400

350

580

513

450

1050

1350

1600

1250

100

Installation Diagram

Installation Tips
Before unpacking the filter:
∗ Do not lift the filter by holding from pneumatic cylinder
∗ Lift by holding from flanges or by a strap as shown on the figure.



Mechanical Installation
Cover:
Cover and body can be installed in an opposite way of the shipment due to the requirement on transfer opening. Initially; it is recommended to install the body without cover. Before being installed , check if loose matters or connection lines are available in the filter.
Gaskets: Gaskets shall be carefully tightened for PVC and GRP flanges. GRP flanges generally require pre-tightening
Position:Filter can be installed in any way as seen on Figure 1-b. Nevertheless; filter body, connections and differential pressure switch shall be horizontal to prevent air accumulation and contamination in air tube. Filter shall be installed in a way it would possess positive pressure downwards to the pump, as shown on Figure 1-c.

Supports: Filter is can be connected directly or in a way it is supported by pipe connections or pipes.
Control Board: Position of the control board shall be in sight of the filter

Internal structure

Fittings

 
Workshop

 
Packing

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Add: No.206 Qingyang North Road, Changzhou, Jiangsu province, ChinaTel: +86-519-85500155Fax: +86-519-85262955    
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