TFB suction filter

Product Introduction – TFB Series Oil Suction Filter

The TFB Series Oil Suction Filter is a high-performance filtration component specifically designed for high-precision suction filtration in hydraulic systems. Installed at the oil suction port of the hydraulic pump, this filter serves as the first line of defense against contamination, removing metal particles, rubber seal debris, and other pollutants from the oil before they can enter the pump. By effectively filtering the oil at the suction stage, the TFB series significantly extends the service life of the oil pump and other sensitive hydraulic components, ensuring reliable system operation and reducing maintenance costs.

In hydraulic systems, the oil pump is one of the most critical and vulnerable components. Contaminants present in the oil—including metal wear particles, seal fragments, casting sand, and external dust—can cause abrasive wear on pump components, leading to reduced volumetric efficiency, increased noise, and eventual pump failure. The TFB series addresses this challenge by providing high-efficiency filtration at the suction point, preventing contaminants from ever reaching the pump. This proactive approach to contamination control is essential for maintaining system reliability and extending equipment service life.

Innovative Design Features

The TFB Series Oil Suction Filter incorporates several innovative design features that set it apart from conventional suction filters:

1. Dirt Accumulation Baffle

The oil filter is equipped with a specially designed dirt accumulation baffle that ensures contaminants deposited within the filter element are retained and removed together with the element during replacement. This innovative design prevents pollutants from falling back into the oil tank when the filter element is changed, maintaining the cleanliness of the hydraulic reservoir and preventing re-contamination of the system. This feature is particularly important in applications where the filter is mounted above or within the tank, as it prevents the release of accumulated contaminants into the clean oil supply.

2. Self-Sealing Valve

The TFB series features an integrated self-sealing valve that enables direct installation on the top, side, or bottom of the hydraulic tank. When the filter cover needs to be opened for maintenance or filter element replacement, the self-sealing valve automatically closes, sealing the oil port and preventing oil from escaping. This means that even when the filter is submerged below the liquid level in a full tank, maintenance work can be performed safely and cleanly without draining the tank or losing oil. This feature significantly simplifies maintenance procedures, reduces oil waste, and minimizes environmental impact.

3. Versatile Mounting Options

The TFB series can be installed in multiple orientations—top, side, or bottom mounting—providing exceptional installation flexibility. This versatility allows the filter to be integrated into a wide range of hydraulic system configurations without requiring complex piping modifications. The adaptable mounting options simplify system design and installation, reducing engineering time and installation costs.

4. Filter Element Pollution Transmitter

The filter is equipped with a pollution transmitter that provides indication when the filter element becomes contaminated and requires replacement. This real-time monitoring capability enables proactive maintenance, preventing filter blockage that could lead to pump cavitation and system performance degradation. The pollution indicator ensures that filter elements are replaced at the optimal time, balancing filtration performance with element service life.

5. Oil Bypass Valve

An integrated oil bypass valve provides additional system protection. If the filter element becomes completely blocked and the differential pressure reaches a predetermined level, the bypass valve opens, allowing oil to flow around the filter element and preventing pump starvation. While bypass operation does allow unfiltered oil to pass downstream, it protects the pump from cavitation damage, ensuring continued system operation until maintenance can be performed.

Technical Parameters

Parameter Specification

Flow Rate Range 45 ~ 70 L/min

Filtration Accuracy 10 ~ 80 μm (selectable)

Maximum Working Pressure 0.6 MPa

Connection Method Threaded connection

Mounting Options Top, side, or bottom of tank

Self-Sealing Valve Integrated, automatic closure

Bypass Valve Integrated, pre-set differential pressure

Pollution Indication Visual or electrical signal (optional)

Filter Media High-performance filtration material

Key Performance Characteristics

· High filtration precision – Effectively removes metal particles, rubber debris, and other contaminants from suction oil.

· Extended pump life – Prevents contaminants from entering the pump, reducing wear and extending service life.

· Maintenance-friendly design – Self-sealing valve and dirt accumulation baffle simplify filter element replacement.

· Versatile installation – Top, side, or bottom mounting options suit various system configurations.

· Reliable system protection – Bypass valve prevents pump cavitation during filter blockage.

· Proactive maintenance capability – Pollution transmitter signals when element replacement is required.

· Simplified system design – Direct mounting eliminates complex piping requirements.

Working Principle

The TFB Series Oil Suction Filter operates on the principle of mechanical filtration. Oil is drawn from the hydraulic tank through the suction filter before entering the pump. As the oil passes through the filter element, contaminants—including metal particles, rubber debris, and other solid impurities—are captured within the filter media structure. The purified oil then flows to the pump inlet, ensuring that only clean oil enters the pump.

The self-sealing valve automatically closes when the filter cover is opened, preventing oil from draining out of the tank. The dirt accumulation baffle ensures that contaminants collected on the filter element are removed with the element during replacement, rather than falling back into the tank. The bypass valve provides protection in the event of filter blockage, while the pollution transmitter indicates when element replacement is required.

Application Fields

The TFB Series Oil Suction Filter is suitable for a wide range of industrial applications:

1. Metallurgy – Filtration of hydraulic systems in rolling mills, continuous casting machines, and various lubrication equipment for heavy-duty gearboxes and bearings.

2. Textile – Purification and uniform filtration of polyester melt during drawing processes, air compressor protection filtration, and compressed gas oil/water removal.

3. Petrochemical – Separation and recovery of products and intermediate products in refining and chemical production, purification of liquid solutions, and optical disc and photographic film manufacturing processes.

4. General hydraulic systems – Machine tools, presses, injection molding machines, and automated production equipment.

5. Construction and mining – Hydraulic systems for excavators, loaders, and other heavy equipment.

6. Power generation – Turbine lubrication systems and hydraulic control circuits.

Economic and Operational Benefits

· Extended pump service life – Effective contaminant removal reduces pump wear and extends component life.

· Reduced maintenance costs – Self-sealing valve and dirt baffle simplify maintenance procedures.

· Prevents re-contamination – Dirt accumulation baffle ensures contaminants are removed with the element.

· Minimizes oil loss – Self-sealing valve prevents oil drainage during maintenance.

· Flexible installation – Multiple mounting options suit various system configurations.

· Proactive maintenance – Pollution transmitter enables timely filter element replacement.

Quality Assurance

The TFB Series Oil Suction Filter is manufactured under strict quality control standards. Each unit undergoes comprehensive factory testing, including pressure integrity verification, flow performance validation, and functional testing of the self-sealing valve, bypass valve, and pollution indication system. The robust construction and high-quality materials ensure reliable operation in demanding industrial environments.

Frequently Asked Questions (FAQ)

Q1: What is the primary function of the TFB Series Oil Suction Filter?

A: The TFB Series Oil Suction Filter is designed for high-precision suction filtration in hydraulic systems. It removes metal particles, rubber seal debris, and other contaminants from oil before they can enter the hydraulic pump, extending pump service life and protecting downstream components.

Q2: What is the purpose of the dirt accumulation baffle?

A: The dirt accumulation baffle ensures that contaminants deposited within the filter element are retained and removed together with the element during replacement. This prevents pollutants from falling back into the oil tank when the filter element is changed, maintaining the cleanliness of the hydraulic reservoir and preventing re-contamination.

Q3: How does the self-sealing valve work?

A: The self-sealing valve automatically closes when the filter cover is opened for maintenance or filter element replacement. This seals the oil port and prevents oil from escaping, allowing maintenance work to be performed safely even when the filter is submerged below the liquid level in a full tank.

Q4: What mounting options are available for the TFB series?

A: The TFB series can be installed in multiple orientations—top, side, or bottom mounting on the hydraulic tank. This versatility allows the filter to be integrated into a wide range of system configurations without complex piping modifications.

Q5: What is the purpose of the bypass valve?

A: The bypass valve opens when the filter element becomes completely blocked and the differential pressure reaches a predetermined level. This allows oil to flow around the filter element, preventing pump starvation and cavitation damage. While bypass operation allows unfiltered oil downstream, it ensures system continuity until maintenance can be performed.

Q6: What does the pollution transmitter indicate?

A: The pollution transmitter provides visual or electrical signal indication when the filter element becomes contaminated and requires replacement. This enables proactive maintenance, preventing filter blockage that could lead to system performance degradation.

Q7: What is the filtration accuracy range for the TFB series?

A: The filtration accuracy range is 10~80 μm, selectable based on specific application requirements. The appropriate precision should be selected based on system cleanliness requirements and the sensitivity of downstream components.

Q8: What is the maximum working pressure for the TFB series?

A: The maximum working pressure is 0.6 MPa. The system should be operated within this limit to ensure safe and reliable performance.

Q9: Can the TFB series be used with different types of hydraulic fluids?

A: The TFB series is suitable for mineral oil and lubricating oil. For synthetic fluids, fire-resistant fluids, or other specialty oils, please consult our technical team to verify compatibility of seals and materials.

Q10: How often should the filter element be replaced?

A: Replacement frequency depends on system contamination levels and operating conditions. The pollution transmitter signals when the element requires replacement. Under typical operating conditions, elements may need replacement every 3~12 months. Regular monitoring of the pollution indicator is recommended.

Q11: Is the TFB series suitable for mobile equipment?

A: Yes. The robust construction and versatile mounting options make the TFB series suitable for both stationary and mobile hydraulic systems, including construction equipment, agricultural machinery, and mining vehicles.

Q12: What happens if the filter element becomes completely blocked?

A: If the element becomes completely blocked, the differential pressure increases. The bypass valve opens at the preset pressure to allow oil flow around the element, preventing pump starvation. The pollution transmitter will have indicated the need for replacement before complete blockage occurs.

Q13: Can the TFB series be installed on the bottom of the tank?

A: Yes. The TFB series supports bottom mounting as well as top and side mounting. The self-sealing valve ensures that maintenance can be performed safely even in bottom-mounted configurations.

Q14: What is the connection method for the TFB series?

A: The TFB series uses threaded connections for simple, reliable installation. The specific thread size and type can be configured based on system requirements.

Q15: What documentation is provided with each shipment?

A: Each unit ships with a factory test report, operating manual, dimensional drawings, and a spare parts list. Material certificates for wetted components are available upon request.

Q16: What is the typical service life of the TFB Series filter housing?

A: The filter housing and self-sealing valve mechanism are designed for long-term service life under normal operating conditions. With proper maintenance, the unit can provide reliable service for many years. Filter elements are consumable items that require periodic replacement.

Summary

The TFB Series Oil Suction Filter is a high-performance filtration solution designed for high-precision suction filtration in hydraulic systems. Its innovative features—including the dirt accumulation baffle, self-sealing valve, pollution transmitter, and bypass valve—provide exceptional filtration performance, convenient maintenance, and reliable system protection. With versatile mounting options, a wide filtration accuracy range, and robust construction, the TFB series is an essential component for maintaining hydraulic system cleanliness, extending pump service life, and optimizing operational efficiency across a broad range of industrial applications.

Contact Us

For detailed datasheets, configuration advice, or project-specific quotations, please contact our technical team. We are here to help you find the optimal solution for your filtration needs.

Product Details