Dust Removal Equipment Accessories

1. Structural Characteristics: The Diaphragm Is the Only Flexible Pressure-Bearing Weak Point

The pulse valve body, air reservoir and pipelines are all rigid metal structures with excellent compression resistance, impact resistance and deformation resistance, which can stably bear both standard operating pressure and instantaneous peak pressure of the system.

In contrast, the diaphragm is the only flexible elastic sealing component in the entire dust blowing system. Made of thin composite rubber materials, it undertakes high-frequency opening and closing and dynamic sealing work. Without the rigid support of metal structures, it relies entirely on its own elasticity to offset pressure changes and complete blowing and resetting movements.

When the system pressure spikes to form a pressure peak, the rigid pipelines and valve bodies cannot absorb the instantaneous overload impact force. All the pressure impact is concentrated and transmitted to the diaphragm surface, forming localized stress concentration — this is the fundamental structural cause of premature diaphragm cracking and damage.

2. Working Condition Impact: Peak Pressure Causes Extreme Instantaneous Deformation Beyond Normal Loads

The conventional working pressure of dust removal systems ranges from 0.4MPa to 0.6MPa, under which the diaphragm can maintain stable long-term opening and closing performance.

However, extreme overpressure peaks will be triggered by equipment startup and shutdown, pipeline airflow turbulence, abnormal air compressor pressure regulation, pipeline blockage and excessive blowing frequency. The instantaneous impact pressure far exceeds the standard operating load.

Different from the uniform and stable pressure of conventional working conditions, pressure peaks deliver explosive instantaneous impacts. The diaphragm is forcibly stretched, expanded and rebounded instantly, reaching the extreme deformation limit that far exceeds daily operating deformation range.

Such violent instantaneous deformation generates concentrated shear stress on the stressed edges and corners of the diaphragm. Each peak impact causes invisible micro damage, which is far more destructive than uniform long-term fatigue wear.

3. Cumulative Fatigue: Repeated Peak Impacts Lead to Irreversible Material Aging

Dust removal equipment operates continuously, and the diaphragm bears tens of thousands of pulse opening and closing cycles every day.

Under normal low-pressure operation, the diaphragm achieves uniform elastic deformation without cumulative damage. Nevertheless, each overpressure peak impact will destroy the internal polymer structure of the diaphragm material, resulting in gradual hardening, elastic attenuation and toughness reduction.

Long-term repeated peak pressure fatigue accumulates continuously, evolving from microcracks and local hardening to severe cracking, perforation and overall rupture. This explains why many diaphragms fail suddenly and completely at pressure peaks without obvious aging signs or reaching their rated service life.

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Contact：Yanice Yu

Whatsapp/ Wechat ID: +8617852092959

Email: Yanice@starmachinechina.com