India Customer Customized Fully Automatic Plate and Frame Filter Press Cooperation Case

Project Background
The Indian client in this cooperation specializes in the fine chemical sector, facing challenges with small-batch, high-precision solid-liquid separation in their production process. To enhance production efficiency, achieve unmanned operation, and meet stringent environmental requirements, the client proposed a set of highly customized requirements for a fully automatic plate and frame filter press to our company.

Core Challenges: Small Volume · Full Automation · Intelligent Cycle
The client's core requirements focused on achieving complex automated process cycles within a small 200L filter chamber volume, including:

1. Material & Specifications: Main body in 304 stainless steel, with PP filter plates; 18 plates of 610mm specification, precisely controlling the total volume to 200L.

2. Full Automation: Need for automatic plate shifting, automatic cake washing, and automatic cake discharge.

3. Pressure Control: Strict limits of 4kg for squeezing pressure and 5kg for feeding pressure.

4. Closed System: All inlets/outlets controlled by solenoid valves, utilizing a fully enclosed dark flow (closed filtrate) system to eliminate leaks.

5. Intelligent Process: PLC control with online TDS monitoring to automatically execute the "filling → squeezing → washing → secondary squeezing" cycle, terminating automatically upon reaching washing standards.

Our Customized Solution
Addressing these challenges, our company provided a comprehensive customization solution covering mechanical structure and control logic:

• High-Corrosion-Resistance Precision Structure: The frame is welded from 304 stainless steel, suitable for the demanding workshop environment. The filter chamber consists of 18 pieces of 610mm PP filter plates, strictly meeting the 200L volume requirement while balancing corrosion resistance and filtration efficiency.

• Fully Automatic Mechanical Modules: Integrated systems for automatic plate shifting, cross-flow cake washing, and automatic cake discharge. The cross-flow washing utilizes an open-flow bidirectional diagonal inlet design to ensure no dead angles during cake rinsing.

• Intelligent Control & Monitoring System:

  • Equipped with a PLC and LCD touch screen for full-process visualized programming.

  • Built-in precision pressure sensors for real-time monitoring, strictly enforcing the 4kg/5kg pressure limits with automatic overpressure protection and relief.

  • Integrated with an online TDS meter at the outlet, providing real-time feedback on washing liquid parameters. Once the TDS value reaches the set standard, the system automatically terminates the washing cycle and proceeds to the final squeezing and discharge stages, significantly saving washing liquid and ensuring consistent quality.

• Seamless Integration: The equipment's inlet flow rate is designed for 30-40L/Min, perfectly matching the client's existing AODD pump, allowing for quick integration into the current production line without modification.

Core Advantages of the Solution

1. Extreme Customization: Precise 200L small-volume design perfectly aligns with the client's small-batch production model, eliminating equipment waste.

2. Fully Automatic Unmanned Operation: From feeding to discharge, the entire process runs automatically in cycles, meeting the core demands of the Indian market for industrial automation upgrades.

3. Closed-Loop Intelligent Control: Centered on "PLC logic control + TDS real-time feedback," it enables precise control and automatic judgment of the washing process, ensuring product stability.

4. Safety & Environmental Protection: The fully enclosed dark flow design and leak-proof piping improve material utilization while ensuring a safe and clean working environment.

Cooperation Outcome
The solution delivered by our company, with its precise fulfillment of the client's specific requirements for pressure, volume, and intelligent cycle logic, received high recognition from the client. Once operational, this equipment will help the client achieve automation and intelligence upgrades in their solid-liquid separation process, significantly reducing manual intervention, improving filtration accuracy and batch consistency, and providing strong support for enhancing their competitiveness in the Indian industrial market.