Diaphragm Compressor


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Contact Sollant Team

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Product Name: Membrane Compressor, Gas Air Compressor, China diaphragm compressors
Gas Type: H2、He、Ar、C2H4、F、HS、CL、SiH4、NF
Structure type: V Type, Z Type, D Type, L Type
Piston travel: 70-130mm,70-180mm, 130-210mm, 110-180mm
Max.piston force: 10KN-30KN,10KN-90KN, 40KN-160KN, 20KN-90KN
Max.discharge pressure: 50Mpa, 70Mpa, 100Mpa
Warranty: 2 years
Certification: CE/ASME/ISO
Color: Optional&customization
Local Service Location: Philippines, Mexico, Russia


1. Brief Introduction of Sollant Diaphragm Compressor:

The diaphragm compressor is mainly composed of a motor, a base, a crankcase, a crankshaft connecting rod movement mechanism, cylinder parts, oil and gas pipelines, an electronic control system, and some accessories.

The principle of the gas-assisted oil-free high-pressure nitrogen compressor is that the nitrogen is completely isolated from the hydraulic oil, and there is no pollution during the compression process. It completely avoids the high oil content of the oil-lubricated piston-type high-pressure compressor.

The filter element is regularly replaced and the special compressor oil is added. Disadvantages of extremely high cost. The structure is simple, the maintenance is convenient, the reliability is high, the pressure output is stable, and the running sound is extremely low.


2. Working Principle of Diaphragm Compressor:

A reciprocating compressor that compresses and delivers gas by reciprocating a diaphragm in a cylinder. The diaphragm is clamped along the periphery by two limiting plates to form a cylinder. The diaphragm is driven by mechanical or hydraulic pressure to reciprocate in the cylinder to realize the compression and delivery of gas.

Compressors that use rubber or plastic diaphragms and are mechanically driven are only suitable for occasions with a displacement of several cubic meters per hour and a discharge pressure of about 1.2 MPa. They are generally made as single-stage or two-stage.

Compressors that use metal diaphragms and are driven by hydraulic power are more common. Their displacement can reach 100 cubic meters per hour, and the discharge pressure of multi-stage compression can exceed 100 MPa, which is suitable for conveying and pressurizing various gases. It can also be used as a booster compressor after an oil-free compressor.

The thickness of the metal diaphragm is generally 0.3 to 0.5 mm. The life of the diaphragm depends on the selected material and its surface roughness. Due to the large mass of the hydraulic drive, the average speed of the piston in the hydraulic part can only be 2 meters per second, so the machine speed is usually in the range of 300 to 500 rpm.

The ratio of the cylinder working volume surface area of ​​the diaphragm compressor to the cylinder volume is much larger than that of the reciprocating piston compressor. The gas compression is close to an isothermal process, so the pressure ratio of each stage can be as high as 25.

Diaphragm compressors are suitable for various applications with small displacement due to the good airtightness of the cylinder, and the compressed gas is not polluted. For example, it is used as a small air supply device, pneumatic regulator, aeration device for aquarium breeding ponds, and the transportation and pressurization of oil-free, toxic, corrosive, precious, or radioactive gases in the chemical industry.


3. Diaphragm compressor classification:

(1). Classified by structure:
Diaphragm compressors have six types: Z, V, D, L, W, and hexagonal type;

(2). Classified by diaphragm material:
Diaphragm materials of diaphragm compressors are metal diaphragm (including black metal and non-ferrous metal) and non-metal diaphragms;

(3). Classified by compressed media:
It can compress rare and precious gases, flammable and explosive gases, high-purity gases, corrosive gases, etc.

(4). Classified by sports organization:
Crankshaft connecting rod, crank slider, etc.;

(5). Classified by cooling method:
Water cooling, oil cooling, rear air cooling, natural cooling, etc.;

(6). Classified by lubrication method:
Pressure lubrication, splash lubrication, external forced lubrication, etc.

Diaphragm compressor classification

4. Advantages Of Sollant Diaphragm Compressor:

Sollant Diaphragm compressor is a special structure positive displacement compressor. The cylinder does not need to be lubricated, the sealing performance is good, the compression medium does not contact any lubricant, there is no pollution, and the compression purity can reach 99.999%. It is especially suitable for the compression, transportation, and bottling of high-value rare gases and highly corrosive, toxic, explosive, and radioactive gases. For example, H2、He、Ar、C2H4、F、HS、CL、SiH4、NF

Diaphragm compressor cylinder has good heat dissipation, simple and efficient structure, high pressure can be achieved by two-stage compression, and at the same time, it can be close to isothermal compression. Therefore, it is used in industrial gas, food and medicine, petrochemical industry, aviation nuclear power, military equipment, scientific research, and testing, etc. The field is widely used.


5. Develop Your Business with Sollant Diaphragm Compressor:

It has the characteristics of a large compression ratio, good sealing, and the compressed gas is not polluted by lubricating oil and other solid impurities.

The diaphragm compressors designed and manufactured by “Sollant” are divided into four categories: V, Z, D, L, and 26 series, with nearly 900 products. The single machine displacement of the product is up to 3000Nm3/h, the pressure design range is up to 100MPa, the maximum piston force is 250KN, and the maximum driving power is 450KW.


6. Why Choose Sollant Diaphragm Compressor:

*The diaphragm compressor has a reasonable structure design, stable and reliable operation, low vibration, and low noise.
*The cylinder body parts adopt the structure without a matching plate, which reduces the difficulty of the assembly process and reduces the sealing surface.
*The new-type membrane cavity curve and the imported gas valve improve the volumetric efficiency of the compressor
*The entire diaphragm machine is concentrated on a skid-mounted chassis, which is convenient for transportation and installation.


7. How Do Diaphragm Compressors Work?