Ultra-high-pressure self-locking diaphragm filter press

Centered on mechanical self-locking and ultra‑high‑pressure pressing, it achieves deep dewatering of coal sludge, ensuring high efficiency, operational stability, and energy savings. In the coal industry, it is the preferred equipment for meeting environmental standards, enabling resource recovery, reducing costs, and boosting productivity, thereby significantly enhancing both the overall economic performance and environmental compliance of coal preparation plants.

Mechanical Self-Locking Tightening System (Core Technology): Once the hydraulic cylinder is fully clamped, it locks automatically, eliminating the need for continuous pressure maintenance and completely resolving common issues in conventional models, such as filter plate loosening, material leakage, and high energy consumption under high pressure. After self‑locking, the hydraulic system shuts down, with no ongoing energy draw, resulting in 40%–60% greater energy savings compared to traditional pressure‑maintaining machines—delivering exceptional efficiency and energy conservation.

Safe and reliable, with a high degree of automation: Mechanical locking eliminates the risk of pressure leakage, maintaining a stable squeezing pressure of 3.0–7.0 MPa (compared to only 1.5–2.0 MPa for conventional diaphragms). The entire process operates automatically, minimizing manual intervention and reducing safety risks and operational workload.

High processing efficiency and large production capacity: High pressing speed, with a single-cycle time reduced by more than 30% and single-unit processing capacity increased by 30% to 50%, making it well-suited for continuous operation in large-scale coal preparation plants.

Extreme dehydration depth, with a significant reduction in moisture content: The filter cake is uniformly thick and thoroughly dewatered, with the moisture content of coal slurry reduced to 18%–22% (compared to 28%–32% for conventional models). This effectively addresses the issues of coal slurry being “sticky to the touch, unable to form cohesive lumps, and prone to scattering.”

At every stage—loading, feeding, pressing, and discharging—no manual intervention is required, significantly boosting operational efficiency, reducing workers’ physical strain, and preventing human‑error–related accidents, thereby truly enabling unattended operation.

Chengjing Environmental Protection Equipment (Wuqiao) Co., Ltd. is an enterprise with independent design, development and manufacturing capabilities. It has absorbed the product advantages of excellent domestic and foreign manufacturers in the same industry, with complete processing equipment, advanced technology, strong strength and excellent product quality.

Since its establishment, the company has developed rapidly and its business has continued to expand. It has explored a new process route for efficient and practical sludge disposal that is in line with national policies and suitable for national conditions. With the advantages of thorough reduction effect and low disposal cost, it has created a standardized sludge disposal. The new road of market-oriented operation has rich experience in the deep dewatering of sludge such as lithium battery new energy, sand and gravel aggregates, municipal, chemical industry, printing and dyeing, food and medicine, tailings, to provide you with high quality filtration technology.

The company always takes "energy saving and environmental protection, beautiful China" as its mission, adheres to the tenet of "limited resources, unlimited circulation, green development, industry serving the country", pays attention to product quality, serves customers, and is committed to developing into an influential comprehensive service in the field of domestic environmental protection Service. For ecological environmental protection and economic development to provide long-term answers, but also for future generations a clear water and blue sky.