Those things about silicone rubber diaphragms
Previously, I introduced all aspects of the rubber industry, from O-rings, paper feed rollers, and related technologies to popular science. Today, I will introduce another product: silicone rubber diaphragm. Although we don’t often see it, many products are It has its presence, such as coffee machines, steam cleaners, etc. Next, the editor will introduce all aspects of its knowledge.
The functions of the diaphragm are: suction, isolation, adjustment of pressure/flow, drive, adjustment, shock absorption/buffering, measurement (instrument), etc.,
It has applications in pumps and valves, pneumatic components, pneumatic hydraulics, gas equipment, electrical equipment, automotive industry and other fields.
The common ones are pressure reducing/pressure regulating/relieving valve diaphragm, control valve diaphragm, vacuum pump diaphragm, carburetor diaphragm, metering pump diaphragm... water pump, air pump, solenoid valve, coffee machine, sprayer, steam Silicone rubber diaphragms are used in cleaning machines, etc.
Common shapes include round, square, and irregular shapes.
Silicone rubber diaphragms can be divided into three types: pure rubber type, cloth type (intermediate or unilateral cloth), and rubber metal parts and cloth mixed types.
The function of cloth clamping is to strengthen the performance of the diaphragm. For example, in high-pressure operation, the diaphragm is often required to have strong tear resistance, while in low-pressure operation, the diaphragm with cloth is often not required.
Common cloth materials are: nylon, cotton canvas, stretch fabric, polyester fabric, etc.
The most basic thing to ensure the quality of silicone rubber diaphragm is the material. According to different use environments, there are often different requirements for the material.
According to the different media contacted during work, the required materials are also different. Common ones are EPDM, silica gel, fluorine rubber, butadiene nitrile rubber, etc., and they must be customized according to the use environment to achieve flexibility, Permeation resistance, high pressure resistance, corrosion resistance, tear resistance, good stability, long life, oil resistance, acid and alkali resistance, high and low temperature resistance, ozone resistance and other performance requirements.
Finally, let’s talk about the design. When designing the product, we must consider the working environment, the pressure during the operation, the working frequency, and the role it plays. When designing the mold, we must pay special attention to sharp edges and burrs, because these will cause the diaphragm to pass. Early damage, so the mold surface must be smooth and not rough