Oil-Free Diaphragm Vacuum Pump

Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of oil-free diaphragm vacuum pump in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk oil-free diaphragm vacuum pump in stock here from our factory. We also accept customized orders.

 

 

 

For lab and commercial applications that require fresh gas handling, the QIWEILAB oil-free diaphragm vacuum pump is designed to offer an oil-free suction source. Diaphragm materials and compatibility with all gas-contact components are crucial considerations when choosing a pump for applications involving biologically active gases.

In suitable vacuum applications, the confirmed model or models use a PTFE diaphragm to improve chemical resistance. PTFE is regarded for its opposition to a wide range of acids, alkalis, and chemicals. When the pump is used with appropriate chemical media, the material feature can help to lessen the diaphragm degradation. The materials used in the valves, pumps room, seals, and connections affect their true compatibility, as well as the fuel concentration, heat, contact conditions, and exposure conditions.

 

product key technologies

01.

Introduction

The oil-free diaphragm vacuum pump has the advantages of simple structure, easy operation, convenient maintenance, small volume and convenient movement. And good durability, high work efficiency, to remove impurities in the liquid, purification, sterilization effect. Vacuum pumping, compression, dual-purpose vacuum pump, is a very wide range of applications to remove the vacuum of the basic equipment.

02.

Principle

The power of oil-free diaphragm vacuum pump usually comes from the motor. When the motor rotates, the connecting rod is driven by the eccentric wheel mechanism, and the connecting rod drives a flexible diaphragm for reciprocating motion.

When the diaphragm moves to one side, the volume of the pump chamber increases, the internal pressure decreases, and a local vacuum is formed. At this time, the intake valve opens and the gas is sucked into the pump chamber.

When the diaphragm moves to the other side, the volume of the pump chamber decreases and the internal pressure increases. At this time, the intake valve is closed, the exhaust valve is opened, and the compressed gas is discharged from the pump chamber.

During the whole process, the gas is only in contact with the pump chamber, valve and diaphragm, and no lubricating oil is involved, thus ensuring the purity of the gas.

1. Analysis and medical equipment: As the sample injection and emptying core components of mass spectrometer, chromatograph and other instruments, to ensure the accuracy of the analysis results.

2. Semiconductor and precision manufacturing: For chip packaging, optical coating before the small workpiece loading, pick up and keep.

3. General laboratory: Provide reliable and clean vacuum source for filtration device, rotary evaporator, drying box, etc.

4. Environmental protection and new energy: Applied to gas sampling, fuel cell testing and other scenarios.

1. Do not start with pressure. It is forbidden to pump the liquid into the pump. It is recommended to add a buffer bottle.

2. When the positive / negative pressure dual-purpose pump is used, it cannot be used at the same time.

3. Continuous boot does not exceed 30 minutes.

4. The connecting pipe can not enter the dust, keep the pipe clean.

5. Connection pipe Long pipe end connection pumping interface, short pipe end connection inflatable interface, do not connect the reverse interface.

6. The pump is not suitable for the extraction of corrosive to ferrous metals, the pump oil chemical reaction, containing particulate dust gas, and oxygen is too high, explosive toxic gases. Moreover, it cannot be used as a transmission pump (i.e., pumping from one container to another).

Without regular vacuum fuel lubrication in the gas-handling process, both membrane vacuum pumps and another oil-free vacuum pumps operate. Their program suitability and pumping mechanisms differ.

To produce suction and discharge gas, a membrane vacuum pump employs an inlet and outlet valve, as well as a flexible diaphragm. Diaphragm and valve materials are crucial when determining substance compatibility because the pull mechanism and the pumped gas are separated by design.

Another vacuum pumps without oil does have a variety of pumping mechanisms and material combinations. Their eligibility depends on the required repair, required vacuum level, required flow rate, and gas composition. Buyers should compare the total gas-contact material specifications before choosing a pump based solely on the term "oil-free "when using chemical vapors.

1. What is the benefit of a PTFE diaphragm?

Numerous acids and alkalis are resistant to PTFE, making it resistant to a lot of chemicals. The precise fuel, the concentration, the temperature, and the other gas-contact components 'materials all have their own characteristics.

2. Can this pump handle strong acid or alkali vapors?

Only when the entire gas-contact system is confirmed to be compatible with the precise vapor and operating conditions. Before placing an order, please give the chemical name, attention, and temperature for compatibility testing.

3. Can the pump run continuously for 24 hours?

The woman's recommended duty cycle affects constant operation. Kindly let the manufacturer know how long you'll be able to use. Use the pumps at or above the instructions on its manual.

4. What information is needed to select a model?

Please list the desired working time, vacuum stress, gas composition, pressure function, and required flow rate. These specifics help users choose the best XZ set model.

5. Does QIWEILAB support OEM or private-label orders?

According to the customer's requests for customization and quantity, OEM/ODM availability and minimum order requirements should be confirmed with the sales team.

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