Pump protection filters
| Designation | Operation concept | Advantages |
Equipment models
|
Model |
Inlet/outlet diameter |
Recommended. Capacity, max |
||
|
Inches |
Mm |
1 200 µm, m3/h |
2 500 µm, m3/h |
|
|
пво-фн-1004 |
4 |
100 |
80 |
100 |
|
пво-фн-1006 |
6 |
150 |
150 |
190 |
|
пво-фн-1008 |
8 |
200 |
300 |
380 |
|
пво-фн-1010 |
10 |
250 |
500 |
630 |
|
пво-фн-1012 |
12 |
300 |
700 |
880 |
|
пво-фн-1014 |
14 |
350 |
1 000 |
1 100 |
|
пво-фн-1016 |
16 |
400 |
1 380 |
1 400 |
|
пво-фн-1018 |
18 |
450 |
1 750 |
2 180 |
|
пво-фн-1020 |
20 |
500 |
2 200 |
2 750 |
Designation.
Smooth operation of pumping equipment depends on availability of mechanical inclusions in incoming flow so special attention shall be paid to this challenge. Vegetable residues, debris, small stones may damage the equipment. The problem is especially acute for water intake from open sources. A filter is secured on an intake pipe and is lowered down into water at an intake point. A fine screen drawn around a body prevents ingress of foreign matters into a pipeline.
Design distinctive features.
The filter design is a screen made of stainless steel; the screen is secured on a cylinder frame. A flange for connection to the pipeline and a water supply connection to washing nozzles are located in the cylinder upper part. Models of pump protection filters manufactured by spc promvodochistka ltd are distinguished by connection diameters. Dimensional variations are 100 mm (пво-фн-1004) to 500 mm (пво-фн-1020). There are options with the use of a screen of 1 200 and 2 500µm mesh. Zink coating is applied on all parts of the filter metal body to protect it against corrosion. The second epoxy protection decorative layer of 250 µm thickness is applied additionally with further heat drying.
Operation concept.
Upon the pump starting, incoming flow passes through a screen which retains all mechanical inclusions the sizes of which are larger than the sizes of mesh. In the course of time the screen may accumulate a great number of debris. Serious problems connected with the pump steady operation may arise in case of heavily polluted water. In case of decrease in capacity the filter screen on the incoming line shall be flushed. Water under at least 1.5 bar pressure is supplied to washing nozzles. A flushing jet inside the screen washes off all contaminants which have stuck to the screen external surface.
 |
1 - nozzles 2 - hydraulic motor 3 - screen 4 - body 5 - water supply tube |
Advantages of filters:
- Improved trouble-free operation of pumping equipment;
- Compliance with quality requirements set to incoming water relative to suspended matters;
- Long-term service life due to the use of anticorrosive materials and coatings.
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