GNEE (Tianjin) Multinational Trade Co.,Ltd , https://www.suppliersteel.com
Horizontal Twin Screw Pump Oil Pump
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**Product Specifications:**
- **Model No.:** 2LB
- **Trademark:** Runlink Huaiyin
- **Transport Package:** Wooden
- **Specification:** 3m³/h – 2500m³/h
- **Origin:** Huaian, Jiangsu, China
- **HS Code:** 8413604090
**Application Fields of Twin Screw Pump:**
1. **Oilfield:** Ideal for transporting various types of oil, sewage, sump oil, polymers, and crude oil (including oil-gas mixtures).
2. **Shipbuilding Industry:** Used as marine cargo oil pumps, sweeping cabin pumps, ballast pumps, main engine lubricating oil pumps, and loading pumps.
3. **Petroleum Products Transportation & Storage:** Suitable for oil storage, wharves, loading/unloading, and transferring different types of oils.
4. **Petrochemical Industry:** Efficient for moving acids, alkalis, saline liquids, resins, pigments, inks, paints, glycerol, paraffin, and other viscous media.
5. **Thermal Power Plants:** Used for heavy oil, thick oil, and fuel transfer and ejection.
6. **Food Industry:** Perfect for transporting alcohol, honey, syrup, toothpaste, milk, cream, soy, plant oil, animal oil, and wine in distilleries, food factories, and canneries.
7. **Paint Industry:** Utilized for barrel loading and unloading pumps for coatings and paints.
**Advantages of Twin Screw Pump:**
1. High self-priming capability
2. Low noise, no pulsation, and no emulsifying shearing of the medium
3. High efficiency and energy savings
4. Different models available for specific applications
5. Capable of handling gas-liquid mixtures
6. Suitable for transporting volatile oils at high temperatures, such as gasoline
**Performance Parameters:**
- **Flow Rate:** 3–2000 m³/h
- **Pressure:** 0–4.0 MPa
- **Temperature Range:** -20°C to 350°C
- **Viscosity:** 0–10,000 mm²/s (with special design, up to 1×10ⶠmm²/s)
**Types of Twin Screw Pumps:**
1. **Installation Type:** Horizontal or vertical
2. **Structure Type:** Cast or welded
3. **Heating Type:** Available based on media requirements
4. **Material Options:** Pump body materials include cast steel, cast iron, Stainless Steel (304, 316L), Q235, and more. Screw cover materials vary from cast steel to 17-4PH stainless steel. Custom material options are available depending on application needs.
**Structure and Working Principle:**
The pump consists of a pump body, driving and driven screws, shaft seal, synchronizing gear, and safety valve. The screw has a symmetrical rectangular thread profile. The synchronizing gears drive the screws to engage and rotate, drawing the fluid from both sides and directing it to the center outlet. A safety valve is installed on the pump body, set to 1.1 times the working pressure. Pumps with flow rates below 15 m³/h do not require a safety valve.
**Operation Instructions and Precautions:**
1. Mount the pump and motor on a sturdy base to prevent vibration damage and ensure smooth operation.
2. Ensure electrical connections meet government standards.
3. General working orientation: facing the input screw, right-side inlet, top outlet, and clockwise rotation. Special configurations should be specified when ordering.
4. Install a 20-mesh filter with a flow area at least four times that of the pump inlet.
5. Pipe size must match the pump’s inlet and outlet to avoid performance issues.
6. Clean all pipes and filters before first use.
7. Open all valves before starting the pump. Adjust as needed during operation.
8. Monitor vacuum levels after startup; if no vacuum is detected within one minute, stop and check.
9. When using the pump for cabin sweeping, limit rotation time to 3 minutes to avoid seal damage.
10. Use 180# medium load gear oil. Regularly check oil level and temperature (not exceeding 70°C under normal conditions, 80°C for long-term use).
11. Check and replenish gear grease regularly.
12. For closed screw sealing frames, ensure leaks are addressed promptly to prevent bearing damage.
13. For high-flow and high-pressure pumps, water cooling systems may be required (approx. 2 m³/h).
14. For high-viscosity media, consider a heating system.
**Common Issues and Solutions:**
1. **Pump fails to prime or displacement is insufficient:**
- Check for pipe leaks and tighten bolts or replace washers.
- Replace worn screws or pump bodies.
- Inspect filters or pipes for blockages.
- Replace damaged seals or adjust/replace springs.
- Clean internal impurities in the safety valve.
2. **Unusual noise, overheating, or pump failure:**
- Replace damaged bearings.
- Lubricate or replace bearings.
- Clean the pump cavity and repair if necessary.
- Refill or replace gear oil.
- Replace damaged gears and adjust screw gap to prevent collision.
**Assembly and Disassembly Instructions:**
**Disassembly of Pump Input Shaft End:**
- Remove the coupling and key.
- Take off the shaft cups and bearings.
- Carefully retract the shaft bracket using bolts.
- Pay attention to the adjusting washer under the bearing.
- Inspect and replace any damaged seals or bearings.
- Pull out the screw only if there are impurities in the cavity.
**Reassembly Steps:**
- Reinstall the shaft bracket with a locating pin.
- Place the adjusting washer back and replace the oil seal if damaged.
- Assemble the bearing, retaining washer, and nut using a specialized tool.
- Reattach the coupling and test the screw movement for smoothness.
**Disassembly of Gearbox End:**
- Remove the gearbox and gear components carefully.
- Follow similar steps as above for reassembly.
- Add gear oil and verify proper operation before final assembly.
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