Oil-Free Diaphragm Vacuum Pump

1. Completely oil-free structure, zero pollution operation

Oil-free diaphragm pumps have a pure mechanical structure and don't need lubricating oil, so they won't contaminate gas samples. This makes them especially useful for chemical analysis labs and medical equipment. Conventional oil type vacuum pumps may produce oil vapour or mist while in use.

2. High corrosion resistant materials are optional

In order to provide stable operation and a long service life, the pump body is composed of corrosion-resistant materials such PTFE and FPM, which can withstand weak acids, weak bases, and some organic solvents.

3. Stable vacuum degree and long-life operation

The multi-layer structure enhances fatigue resistance, and the diaphragm is composed of composite film or fatigue-resistant rubber. It can meet the long-term work needs of laboratories since its continuous operational life is significantly longer than that of regular pumps.

4. Quiet operation with low vibration

The high-precision dynamic balancing design and optimised linkage structure keep the pump's noise level low even while operating at high speeds, making it appropriate for offices or labs with sensitive sound conditions.

5. Extremely low maintenance and lower usage costs

Since just the diaphragm or valve plate needs to be changed, oil-free diaphragm pumps don't need complicated maintenance or frequent oil changes, which significantly lowers long-term costs. They are also far more reliable than oil pumps.

Customizable content

Oil-free diaphragm vacuum pumps are manufactured using a precise and exacting procedure that strictly controls quality from raw materials to final goods. The basic production method is as follows:

1. Incoming inspection and screening of raw materials

Testing for fatigue strength must be passed by the diaphragm material.

The material of the pump head (PTFE, aluminium alloy, electrophoretic treated metal, etc.) must be able to withstand corrosion.

Safety performance testing and no-load testing are required for the motor.

Every material needs to adhere to ISO9001 or other pertinent industry requirements.

2. High-precision machining with CNC

CNC machining is used to finish important parts like the pump body, connecting rod, and valve seat in order to guarantee exact measurements, smooth sealing surfaces, and enhanced airtightness and operational stability.

3. Diaphragm manufacture and assembly

The diaphragm is the main part, and the following steps are involved in its production:

formation of mould

Microtexture treatment of the surface (to improve flexibility)

Composite processing with many layers (enhancing fatigue resistance)

Following over 100,000 fatigue tests

Every diaphragm must be examined for airtightness and flexibility.

4. Chamber and valve plate assembly

The exact assembly of valve plates and chambers is completed by the mix of automated and manual production lines. This method needs to ensure:

Moderate valve disc elasticity

precise location of the sealing ring

Unobstructed and smooth gas path

Any small variation could result in unstable negative pressure or a drop in pumping pace.

5. Motor and transmission structure installation

comprising:

lubrication of bearings (using oil-free self-lubricating bearings)

Correction of dynamic balance

Test of the motor and connecting rod before assembly

Ensure little vibration and noise.

6. General assembly

To keep contaminants out of the pump body's interior, all parts are put together in a dust-free workshop. The pump head, motor, base, shock absorber pad, and other parts are assembled precisely.

7. Performance testing and aging detection

Each finished product must pass the following tests:

Test the pull speed.

Maximum vacuum test

Test for leakage (airtightness)

Ageing test that is continuous (4–12 hours)

Monitoring of noise and current

Only machinery that has successfully completed project testing is allowed to leave the factory.

Production Technology

FAQ