Haitian Injection Molding Machine Suction Oil Filter

3 month ago

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4 year

Product details

I. Function Analysis

1. Contaminant Filtration

• Removes metal particles, oxides, seal fragments, and other impurities from hydraulic oil to prevent surface scratches or orifice blockages in hydraulic pumps and actuators (e.g., cylinders, motors).

• Typical filtration precision ranges from10–30 μm, depending on the machine model and hydraulic system requirements.

2. System Protection

• Maintains oil cleanliness (e.g., NAS 8 or ISO 4406 18/15 standards) to extend the service life of hydraulic components and reduce downtime caused by contamination-related failures.

• Prevents secondary pollution from compressed or fragmented contaminants under high pressure.

3. Performance Optimization

• Ensures rapid hydraulic system response by avoiding viscosity changes or jamming due to impurities.

• In low-temperature environments (e.g., northern winters), prevents accelerated oil oxidation caused by contaminants, maintaining stable oil performance.

II. Structural Features

1. Filter Element Design

• Multi-Layer Composite Media: Typically combines glass fiber with metal mesh for balanced filtration precision and flow capacity.

• Integrated Bypass Valve: Some models include a bypass valve that automatically opens when the filter element is clogged, preventing system oil starvation (though timely replacement is required to avoid contamination spread).

2. Sealing System

• Fluororubber or PTFE Seals: Resistant to hydraulic oil chemicals, ensuring leak-free performance even under high pressure (e.g., Haitian MA5 series with a maximum clamping force of 3,709 tons).

3. Installation Location

• Usually mounted at the hydraulic tank suction port or pump inlet to ensure preliminary filtration before oil enters the system.

• Some models (e.g., HTF series) feature large-diameter designs to reduce suction resistance and improve pump efficiency.

III. Application Scenarios

1. High-Volume Production

• In continuous-operation equipment like Haitian’s fruit basket-specific injection molding machines, the suction oil filter must withstand 72-hour non-stop operation with a failure rate of ≤0.5%.

2. High-Precision Control

• When paired with servo systems (e.g., Yizumi models), higher oil cleanliness is required to prevent impurities from affecting plasticization parameter adjustments.

3. Extreme Operating Conditions

• In northern cold or southern high-temperature environments, oil with temperature resistance and compatible filters must be selected to avoid degraded plasticization due to unstable oil properties.

IV. Maintenance Guidelines

1. Regular Replacement

• Replace the filter element every1,000–2,000 operating hours, depending on usage frequency and oil cleanliness, to prevent frequent bypass valve activation.

2. Oil Monitoring

• Use particle counters to periodically test oil cleanliness. Replace the filter element prematurely if the β ratio (filtration efficiency indicator) declines significantly.

3. Troubleshooting

• Pressure Abnormalities: Check for clogged filter elements or stuck bypass valves if system pressure fluctuates.

• Leakage: Tighten the filter housing bolts and inspect for aged or improperly installed seals.

4. Spare Part Selection

• Prioritize genuine Haitian filter elements for compatibility. If using third-party brands, verify filtration precision, flow characteristics, and pressure ratings.

V. Technological Upgrade Trends

1. Smart Monitoring

• Some advanced filters integrate differential pressure sensors to monitor clogging levels in real time and prompt replacements via HMI (Human-Machine Interface) alerts.

2. Eco-Friendly Design

• Adopts biodegradable filter media or metal-free structures to reduce waste disposal costs and comply with environmental standards like EU RoHS.

3. Extended Service Life

• Optimized filter media structures (e.g., gradient pore size design) extend element lifespan to3,000+ hours, reducing maintenance frequency.

Basic Information

- Applicable Equipment: Haitian brand injection molding machines (general for MA, SA, IA series, common tonnages 60‑4000T)

- Full Name: Hydraulic System Suction Oil Filter / Oil Intake Filter

- Core Function: Installed at the oil suction port of the hydraulic pump, intercepts large‑particle impurities, metal chips and rubber debris in hydraulic oil, protects the hydraulic pump, valves and cylinders from abrasion, reduces pump noise and internal leakage, ensures stable operation of the whole hydraulic system.

OEM Part Numbers (Common Models)

- Standard model: WU‑160×100‑J, WU‑250×100‑J, WU‑400×100‑J

- Haitian special part numbers: 47228, 47229, 47230 (for different tonnage models)

- Precision grade: 100 mesh (standard for suction filter)

Material & Structure

- Filter Medium: Stainless steel woven wire mesh / copper mesh, acid‑alkali resistant, washable and reusable

- Housing: Carbon steel or aluminum alloy, corrosion‑resistant

- Sealing: Nitrile rubber O‑ring, oil‑resistant and high‑temperature resistant

- Filtration Precision: 100μm (standard suction oil filter precision)

Common Faults & Symptoms

1. Filter blocked/clogged: High pump noise, unstable pressure, slow injection action, insufficient clamping force

2. Mesh damaged: Impurities enter the pump, pump wear, valve spool jamming, oil temperature rising sharply

3. Loose seal: Air suction into hydraulic system, cavitation, abnormal vibration

Installation & Maintenance Notes

1. Mounting Position: Inside the hydraulic oil tank, connected to the inlet of the main hydraulic pump

2. Maintenance Cycle: Clean every 1–3 months; replace if mesh is deformed or damaged

3. Installation Requirement: Ensure tight sealing to prevent air intake; avoid filter mesh touching the tank bottom

Product Specifications

- Working Pressure: ≤0.4MPa

- Working Temperature: -10℃ ~ 80℃

- Applicable Hydraulic Oil: 46# anti‑wear hydraulic oil

- Connection Type: Thread connection / flange connection according to machine model