Products Description
EJ and EJZ self priming sewage trash pumps are self-priming , solids handing ,resistant to abeasion.These pumps can handle liquids up to a viscosity of about 50 mm²/S.
They are designed with the advanced device Maintenance Hole and Wear Plate,easy to clean and flush.When the pump is started, the impeller in the pump rotates at high speed, forming a negative pressure in the pump chamber. Due to the negative pressure, the liquid is sucked into the pump body through the suction port. During the self-priming process, the air and liquid reserved in the pump are mixed, and the air is discharged from the discharge port through the action of the impeller until the pump is filled with liquid, thus completing the self-priming process.
After the self-priming is completed, the pump starts to operate normally, the impeller drives the liquid to flow, sucks the sewage from the suction port, and discharges it through the discharge port. The solid particles in the sewage are discharged through the pump body and will not block the inside of the pump.
EJ &EJZ monoblock self priming sewage trash pumps have wide applications in industry ,marine and waste treatment.
Advantage
- Efficient self-priming: With strong self-priming capability, EJ&EJZ self priming sewage trash pumps can reach a suction range of 3-7 meters. No additional pumping equipment is required, which simplifies the operation and is particularly suitable for applications where frequent starting is required for pumping.
- Strong durability: The pump body material and impeller are usually cast iron, ductile iron, bronze, etc., which are suitable for treating sewage containing solid particles and impurities, reducing the risk of failure caused by particle blockage or wear.
- Easy maintenance: The integrated design reduces the time and cost required for maintenance, and usually only the seal or impeller needs to be checked and replaced.
application
- Waste water treatment plant
- Wasing,cooling,circulation
- Smoke scrubbing
- Marine-ballasting &bilge
- Liquid transfer:clean or dirty water,mixed liquids,abrasive or corrosive liquids,low viscosity of petroleum
design & structure
| Design | Performance and dimensions referring to European standard |
|---|---|
| Structure | Semi-open impeller, Single-suction,Self-priming ,Maintenance hole,Wear plate |
| Flange | Pump casings are casted with flanges;Screw flange |
Material of self priming sewage trash pumps
| Part | Standard material | Options on request |
|---|---|---|
| Casing | Cast iron | Ductile iron |
| Impeller | Ductile iron | Bronze / ASTM304 / ASTM316 |
| Weat plate | Cast iron | Bronze / ASTM304 / ASTM316 |
| Shaft | ASTM1045 | ASTM304 / ASTM316 / ASTM420 |
| Shaft Seal | Mechanical seal | - |
operating data
| Items | EJ series | EJZ series |
|---|---|---|
| DN (mm) | 40~200 | 10~100 |
| Flow rate(Q) | 4~468 m³/h | 4~145 m³/h |
| Head (H) | 4~55 m | 4~40 m |
| Max Solids Size | 76 mm | 50mm |
| Self-peiming Head | 3~7 m | |
| Speed | 1450~3600 rpm;lower speed on request | |
| Max Temperature | 80 °C | |
| Conveying Medium | Neutral,acid ot alkali clean or dirty liquids,containing sand,mud or solids on suspension | |
performance
accessories list of Self Priming Sewage Trash Pumps
EJ series
| Code | Name | Code | Name | Code | Name |
|---|---|---|---|---|---|
| 01 | Casing | 23 | Inspection Cover | 53.2 | Nut |
| 02 | Wear Plate-Front | 24 | Inspection Cover Gasket | 54 | Stud |
| 02.1 | Wear Plate-Back | 25 | Shaft Sleeve | 55 | Bolt |
| 03 | Impeller | Oil Seal | 57.1 | Screw Bolt | |
| 06 | Bearing Frame | Mechanical Seal | 58 | Ball Bearing | |
| 07 | Shaft | 26 | Inspection Cover | 59 | Ball Bearing |
| 08 | Bearing Cover | 27 | Inspection Cover Gasket | 60 | Key (lmpeller) |
| 10 | Suction Flange | 33 | Impeller Nut | 61 | Key (Shaft) |
| 14.1 | Rubber Check | 34 | Water Deflector | 62 | Bearing Lock Nut |
| Front Plate - Check Valve | 42 | Back Wear Plate Gasket | 66 | Flat Washer | |
| Back Plate -Check Valve | 43 | Casing Gasket | 67 | Grease Cup | |
| Bolt | 45 | Bolt | 70 | Grease Cup | |
| Nut | 45.1 | Nut | 71 | Lip Seal | |
| 16 | Inspection Cover | 47 | Stud | 100 | Bearing Cover Gasket |
| 17 | Inspection Cover Gasket | 48 | Stud | 101 | Bearing Lock Nut Washer |
| 19 | Pump Cover | 49 | Stud | ||
| 21 | Discharge Flange | 52.1 | Nut | ||
| 22 | Discharge Gasket | 53 | Nut |
EJZ series
| Code | Name | Code | Name | Code | Name |
|---|---|---|---|---|---|
| 01 | Casing | 21 | Discharge Flange | 52 | Screw Nut |
| 02 | Wear Plate | 22 | Discharge Gasket | 53 | Screw Nut |
| 03 | Impeller | 23 | Inspection Cover | 57 | Bolt & Nut |
| 07 | Shaft | 24 | Inspection Cover Gasket | 58 | Ball Bearing |
| 10 | Suction Flange | 25 | Mech. Seal | 60 | Key |
| 14.1 | Rubber Check | 26 | Inspection Cover | 61 | Key |
| Check Valve Plate (Front) | 27 | Inspection Cover Gasket | 62.1 | External Circlip | |
| Check Valve Plate (Back) | 33 | Impeller Nut | Rubber Pad | ||
| Screw Bolt | 43 | Casing Cover Gasket | Internal Circlip | ||
| Screw Nut | 45 | Screw Bolt | 66 | Flat Washer | |
| 16 | Inspection Cover | 47 | Double-screw Stud | 68 | Plug Screw |
| 17 | Inspection Cover Gasket | 48 | Double-screw Stud | 68.1 | O-ring |
| 19 | Adapter | 48.1 | Double-screw Stud | 68.2 | Plug Screw |
| 104 | Set Screw | 49 | Double-screw Stud | 68.3 | O-ring |
| 105 | Motor |
contact
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