DSR250B 57.76-60.89m3/min textile machines positive displacement blower
Product Introduce
DICHENG DSR250B positive displacement blower adopts the advanced technology of Japan,
| Type of technology | Positive displacement blowers |
| Design | Positive pressure |
| Air capacity | 57.76 to 60.89m³/min |
| Discharge Pressure | 9.8 to 58.8Kpa |
| Medium | Air, Neutral gases |
| Conveying | Oil-free |
| Rotating Speed | 1160rpm |
| Discharge Diameter | 250mm(or customized) |
The main characteristic of our positive displacement blower is small volume, light weight, flow strong, noise small, steadily reliable operation. This positive displacement blower is mainly applied to such trades as water treatment, air transport, mine, vacuum packaging, aquaculture and etc. Our products export to Southeast Asia, Europe, North and South America and etc.
Product Feature
1. Air flow and pressure can be customized
2. Stable air flow and less pressure variation
3. Construction simple and easy maintenance
4. Bearing are all lubricated by oil moist
5. Long service life
Description of Performance parameters
The performance parameters table shows the model, outlet diameter, rotate speed, discharge pressure, air capacity and power of motor.
1. The air capacity and pressure in the tables is in standard suction state. The standard suction state is 20ºC temperature, 1.033 kgf/cm2(101.3Kpa) Standard atmospheric pressure and 65% relative humidity.
2. The air capacity and pressure range of some blower models is repeated, to ensure the service life and low noise, should use the larger model.
| Rotate Speed (r/min) | Pressure (kpa) | Air Capacity (m3/min) | Shaft Power (KW) | Motor |
| Model | Power (KW) |
| 1160 | 9.8 | 60.89 | 22.96 | Y200L-4 | 30 | | 14.7 | 60.39 | 28.41 | | 19.6 | 60.01 | 34.14 | Y225S-4 | 37 | | 24.5 | 59.74 | 39.91 | Y225M-4 | 45 | | 29.4 | 59.51 | 46.29 | Y250M-4 | 55 | | 34.3 | 59.30 | 52.36 | Y280S-4 | 75 | | 39.2 | 59.05 | 58.55 | | 44.1 | 58.69 | 64.28 | | 49 | 58.46 | 70.02 | | 53.9 | 58.14 | 75.40 | Y280M-4 | 90 | | 58.8 | 57.76 | 81.47 | | | | |
Roots Rotary Blower Structure Diagram
| No. | Name | Material | Q' ty | No. | Name | Material | Q' ty |
| 1 | Shell | HT200 | 1 | 14 | Z sealing ring | Nitrile rubber | 1 |
| 2 | Impeller | HT200 | 2 | 15 | Gear | 35CrM | 2 |
| 3 | Drive shaft | 45Cr | 1 | 16 | Gear lock washer | Q235 | 2 |
| 4 | Driven shaft | 45Cr | 1 | 17 | Gear lock nut | SS400 | 2 |
| 5 | Drive side siding | HT200 | 1 | 18 | Gearbox | HT200 | 1 |
| 6 | Gear side siding | HT200 | 1 | 19 | Sleeve | 45 | 1 |
| 7 | Drive bearing | NSK | 2 | 20 | End cover | Q235 | 2 |
| 8 | Driven bearing | NSK | 2 | 21 | Pin | 45 | 1 |
| 9 | Sealing ring | Nitrile rubber | 2 | 22 | Plug | 35 | 1 |
| 10 | Sealing ring | Nitrile rubber | 2 | 23 | Oil gauge | | 1 |
| 11 | Bearing sleeve | 45 | 4 | 24 | Vent | | 1 |
| 12 | Bearing cover | HT200 | 1 | 25 | Grease nipple | C3605 | 2 |
| 13 | Bearing cover | HT200 | 1 | 26 | Gearbox seals | Barley paper | 2 |
Roots Rotary Blower Accessorie
Inlet filter silencer, Discharge silencer, Anchor bolts, Baseframe, Safety valve, Check valve, Discharge pressure gauge, Flexible connections, Lubricant oil.
Roots Rotary Blower Application
| Water Treatment | Aquaculture | Powder and granules
transportation |
| Be used in water treatment plant for water purification and sediment mixing | Be used in a variety of fish pond for oxygen supply and mixing, and also for aquariums and live fish tank | Powder or granules
(such as plastic materials, etc.) can be transported by pressure or vacuum |
| Booster | Compost fermentation | Cereals Transportation |
| Used for high-pressure exhaust to make the gas into tiny molecules | High-pressure air take into the livestock manure tank to increase contact area of livestock manure and air , also apply to sewage treatment | Cereals such as wheat are transported from the rotary pilot valve with air |
| Pipe clearing | Sauna | Plating Bath |
| Used to remove dirt and iron dust during pipeline replacement or overhaul | Used for the sauna to provide air bubbles, mainly used for hospitals, hotels and etc. | Use air to stir the electrolyte to keep the electrolyte circulation, and disperse the attached blister to make plating quickly, spread evenly |
| Produce line drying | Car wash dry | Smoke exhaust |
| Quickly remove the water or oil on the cleaned items | Dry the car after washing | Exhaust smoke quickly to reduce pollution |
| Stripping from mold | Air cushion of
Cut off machine | Dry air knife |
| Easy to remove the finished product after stamping | Increase buoyancy, easy to move | Use the blower to blow off the tiny dust and water droplets on the circuit board |
| Feed paper/cloth | Washing machine
blow dry | Gas /heavy fuel injection |
| Collect plastic, cloth, paper and other scrap generated after trimming | Dried bottles after washing, suitable for food industry | Provide high pressure (2000 mmAq) and sufficient air volume |
Common malfunctions and Solution
| Malfunctions | Reason | Solution |
| Blower | Can not rotate | Can rotated by hand | The motor is damaged | Repair or replace the motor |
| Can rotated round by hand | The lobes are locked | Open to repair |
| The impurity in blower | Open to clean |
| Can rotate | Abnormal sound or vibration | Skid, v-belt is too tight or too loose | Adjust v-belt tension |
| Pulley offset | Reset pulley |
| Pulley and belt cover friction | Adjust belt cover |
| Bearing oil lack or aging | To replace the oil |
| Gear oil lack or aging | To replace the oil |
| The safe valve leakage | Adjust the safe valve |
| Foundation insufficient strength | To strengthen the foundation strength |
| Piping resonance | Eliminate by the silencer and support |
| Exhaust pressure rises abruptly | See *annotated |
| Anchor bolt is too loose | Tighten |
| Rotor interference | Open to repair |
| The impurity in blower | Open to clean |
| Check valve bad | Replace |
| Overheating | Exhaust pressure rises abruptly | See *annotated |
| Temperature of working environment exceeds 40 ºC | Ventilated working environment |
| Inlet silencer obstruction | Cleaning/replace filter |
| Airflow insufficient | Pipeline leaks | Tighten the pipe connection |
| Inlet silencer obstruction | Cleaning/replace filter |
| The safe valve leakage | Adjust the safe valve |
| V-belt is too loose | Adjust v-belt tension |
| Exhaust pressure rises abruptly | See *annotated |
| Exhaust pressure rises abruptly | Shut off the valve |
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