Four Position Filter Seal Leak Detection Machine

Buy quality Four Position Filter Seal Leak Detection Machine from Pulan, a professional manufacturer in China. Featuring four testing stations operating simultaneously, the machine achieves a production capacity of 800–1,000 pieces per hour. Interchangeable threaded connectors and sealing rings allow quick adaptation to different filter diameters and thread specifications.

What is a Four Position Filter Seal Leak Detection Machine?

A Four Position Filter Seal Leak Detection Machine is an automated inspection system developed to verify the sealing performance of spin-on filters. It works on the principle that escaping compressed air forms visible bubbles when submerged in water, enabling fast and accurate leak detection. The machine integrates mechanical and pneumatic components, including an operation panel, threaded connectors, air inlet system, main pneumatic cylinder, water-level cylinder, and water tank. During operation, the filter is tightened onto the threaded connector, sealed with the appropriate sealing ring, pressurized with compressed air, and completely submerged in water. Any continuous air bubbles indicate leakage, while no bubbles confirm a qualified seal. Four filters can be tested simultaneously, making the machine suitable for high-volume production lines.

Technical Parameters

Product Features

1. Four-Station Simultaneous Testing: Four filters can be inspected at the same time, providing a throughput of 800–1,000 pieces per hour for high-volume production.

2. Water Immersion Design with Dry Machine Structure: Only the filter is submerged while the main machine remains out of contact with water, reducing corrosion and extending equipment life.

3. Reliable Bubble Detection Method: Leakage is identified through visible air bubbles, providing a direct, accurate, and easy-to-verify inspection result.

4. Quick Changeover for Different Filters: Threaded connectors and sealing rings can be replaced quickly to accommodate different filter diameters and thread types.

5. Adjustable Testing Time: Inspection duration can be set through the time relay to suit different filter specifications and quality requirements.

6. Adjustable Test Pressure (0–0.8MPa): Air pressure is precisely controlled through the regulating valve to meet various sealing test standards.

7. Highly Automated Operation: Tightening, sealing, pressurizing, immersion, leak detection, resetting, and filter removal are completed automatically, requiring operators only for loading and unloading.

8. CE Certified for Export Markets: Multiple machine models have obtained CE certification and are equipped with emergency stop, safety interlocks, and grounding protection.

Applications:

Leak testing of spin-on filter sealing performance for batch production (filter height ≤450mm).

Main Components:

· Operation Panel: Power switch, test start button, pressure gauge, and pressure adjustment valve

· Threaded Connectors: Replaceable to fit different filter thread specifications

· Sealing Rings: Replaceable for various filter diameters

· Main Pneumatic Cylinder: SC125×32 cylinder that presses the filter firmly against the sealing ring

· Water-Level Cylinder: SC50×250 cylinder controlling the water level inside the tank

· Water Tank: Holds clean water for leak testing

· Pressurizing System: Adjustable test pressure from 0 to 0.8MPa

· Control System: Time relay for setting the inspection duration

Working Principle

After the filter is securely sealed, compressed air is introduced into the filter while it is completely immersed in water. A properly sealed filter produces no bubbles. If leakage exists, escaping air forms continuous bubbles, allowing operators to identify defective products immediately.

Production Process:

1. Preparation: Select the appropriate sealing ring and threaded connector according to the filter size and thread type. Fill the water tank with clean water and set the testing time and pressure.

2. Loading: Position the filter on the threaded connector and activate the foot switch.

3. Thread Tightening: The motor rotates the connector to tighten the filter automatically.

4. Sealing: The main cylinder retracts, pressing the filter firmly against the sealing ring.

5. Pressurization: Compressed air (0–0.8MPa) is injected into the filter.

6. Water Immersion: The water-level cylinder raises the water until the filter is fully submerged.

7. Leak Inspection: Observe whether bubbles appear in the water. Continuous bubbles indicate leakage, while no bubbles indicate a qualified product.

8. Reset: After the preset inspection time, the water level lowers, the main cylinder releases the filter, and the motor reverses to unscrew it.

9. Continuous Operation: Load the next filter and repeat the testing cycle.

Installation Precautions

1. Install the machine on a level, clean, and well-ventilated floor away from excessive heat and dust.

2. Maintain at least 1 meter of clearance at the sides and rear, and 1.5 meters at the front.

3. Transport the machine using a forklift with a lifting capacity of at least 1 ton.

4. Secure the machine and ensure it is properly leveled.

5. Connect to a dedicated 380V/50Hz power supply with reliable grounding.

6. Supply compressed air at 0.6MPa.

7. Check the power cable and emergency stop button before operation.

8. Fill the water tank with clean, clear water only. Do not use dirty or contaminated water.

FAQ

Q1: Why can't the filter be sealed properly against the sealing ring?

A: This is usually caused by either a damaged sealing ring that needs replacement or a sealing ring whose size does not match the filter diameter.

Q2: Why can't the filter be screwed onto the connector?

A: Check whether the filter thread matches the threaded connector. If they are compatible, verify that the motor rotation direction is correct and adjust the power phase sequence if necessary.

Q3: What if no bubbles appear, but a very small leak is still suspected?

A: Increase the test pressure within the 0–0.8MPa range or extend the testing time through the time relay to make small leaks easier to detect.

Q4: What should I check if the main cylinder or water-level cylinder does not operate?

A: Confirm that the compressed air supply is on (0.6MPa), inspect the corresponding solenoid valve, and replace or repair the pneumatic cylinder if the valve functions normally.

Purchasing Information

The Four Position Filter Seal Leak Detection Machine is designed for high-efficiency leak testing of spin-on filters in batch production. Free sample testing is available—simply send your filter samples, and we will test them and return the inspected samples for evaluation. Volume discounts are available for bulk orders, and delivery schedules can be confirmed with our sales team.

Customized solutions are available, including additional testing stations such as the PLJL-2B two-station model or the PLJL-6B six-station model, as well as machines for special filter specifications. Each machine is supplied with Chinese and English operation manuals, electrical diagrams, and a pneumatic parts list.

As a professional manufacturer and exporter of leak testing equipment, Pulan offers factory-direct pricing, a one-year warranty, and long-term spare parts support, including sealing rings, threaded connectors, and pneumatic seals. Contact us today for a quotation or to arrange a factory visit.