Water Jet Vacuum Pump Equipment Analysis and User Guide

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I. Equipment Advantages
High-efficiency suction capability
Based on the principle of water-gas two-phase flow, the high-speed water flow creates a vacuum, rapidly suctioning the gas inside the condenser. The vacuum level can reach 0.004~0.005 MPa, significantly improving the unit's efficiency.
- Features multi-channel design (single-channel/screwed), reducing air resistance and minimizing phase drift, achieving a suction efficiency 30% higher than traditional equipment.

2. Low energy consumption and long lifespan
- No moving or static wear structure, with a lifespan of 15-20 years, long maintenance cycle, and low maintenance costs.
Energy consumption is only 1/7 of a rotary vacuum pump, with a small exhaust volume (high exhaust velocity utilization), and low heat loss.

3. High Adaptability
- Supports open/close-loop water circulation; low water quality requirements for operation (allowable impurity concentration ≤ 200mg/L); suitable for high-temperature and corrosive environments.
- Suitable for different unit capacities (power range 5~1480t/h) and features a联动 of the surplus speed vacuum pump to simultaneously handle the shaft seal heater gas.

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Custom Parameter Requirements
| Parameter Category | Specific Requirements |
|---------------------|-----------------------------------------------------------------------------| 
Core Performance - Working Pressure: 0.3~0.5 MPa (Closed Loop) / 0.2~0.4 MPa (Open Loop)
|                     | - Suction Dry Air Volume: 5~1480 kg/h (to be matched according to the vacuum requirements of the unit)         |
| Output & Matching  | - Jet pump flow rate: 105~1480 m³/h, head: 32~38.5 m (e.g., IS125-100-400B pump)
- Matching motor power: 18.5~75kW (select according to output requirement)
Material and Structure | - Main Material: 304 Stainless Steel (Corrosion-resistant) / Cast Iron (Standard)
Nozzle and Diffuser: Hard alloy or ceramic coating, resistant to abrasion and wear
Special Requirements | - For open-loop systems, configure large-radius elbows (≤1) and inclined drainage pipes (slope 3/1000)
- When installed at a high position, the outlet pipe is buried to a depth of ≤300mm to prevent backflow

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Section 3: Installation and Maintenance Precautions
Installation Requirements
- Vertical alignment: Must be installed vertically with precision, with each section's center deviation ≤ 2mm, and the support bracket must be stable.
- Export pipe arrangement: Closed-loop outlets are 1.5m above water level; for open-loop drainage pipes, a bend must be installed in the direction of the recirculation water pipe.

2. Initiate Debugging
Prior to the first operation, a hydrostatic test at 1.5 MPa is required to inspect the weld seam's sealing integrity.
Adjust the pressure of the injection pump to the design value (±5% tolerance) to avoid excessive pressure causing dramatic energy consumption increase or insufficient pressure affecting the suction.

3. Routine Maintenance
   - Key Inspections: Monthly check for nozzle wear and diffuser tube corrosion; annual cleaning of throat tube scale.
- Safety Monitoring: Verify the safety valve trip pressure (1.35MPa) every 6 months, ensuring the level sensor deviation is ≤10mm.

4. Fault Handling
- Excessive water temperature (closed-loop): In summer, enhance the water tank's heat dissipation or switch to an open-loop circulation.
- Decreased suction power: Check for nozzle clogging, deformation of the diffuser tube, or air line leaks.

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IV. Recommended Product (Jiusheng Electric, Lianyungang)
- Model Example: SSC Series Water Jet Vacuum Pumps, output range 5~1500 t/h, compatible with open/closed loop systems.
- Key Parameters: Dry air suction ≤ 7kg/h (standard conditions), exhaust gas velocity utilization > 85%.
- Price Reference: Prices range from 30,000 to 450,000 RMB, depending on output; for a detailed quote, please consult for specifics.

For further selection support or technical documentation, please refer to the "Jet Pump Installation and Operation Manual."