2000 Ton Four-Column Hydraulic Press for Hot Molding Filter Plate

2000 Ton Four-Column Hydraulic Press for Hot Molding Filter Plate

Filter plates for filter presses, also known as composite filter core plates, polypropylene filter plates, diaphragm filter plates, or filter plates for filter presses, are manufactured using ultra-high molecular weight polyethylene or polypropylene resin. Various common additives, antioxidants, and crosslinking agents are mixed and molded through the hot compression molding process. The molding equipment for hot compression molding of filter plates is often a four-column hydraulic press with capacities such as 1000 tons, 1200 tons, 1500 tons, 2000 tons, 2500 tons, and more. The design incorporates a pressure design in three stages: pre-pressing, molding, and holding pressure. This is scientifically allocated in a time-segmented manner, ensuring more significant energy efficiency, high molding pressure, and reliability. It guarantees the molding quality of thermoplastic materials, and the fully automatic production equipment offers a high degree of automation, short production cycles, and high efficiency.

Hot Compression Molding Process for 2000 Ton Four-Column Hydraulic Press for Filter Plate:

1. Loading Material:

   • Place the well-processed dough-like raw material from the extruder into the mold cavity under the hydraulic press, ensuring even placement of the material.

2. Machine Start-up and Heating:

   • After loading, start the machine to close the male and female molds.
   • The action transitions from rapid to slow, gradually increasing pressure on the material through heating and pressing.

3. Air Exhaust:

   • To prevent internal layering and bubbles in the product, perform an air exhaust action by retracting the hydraulic press to expel air. This action shortens solidification time and improves the physical and mechanical properties of the product.

4. Curing at Molding Temperature:

   • Maintain the curing of thermosetting plastics under the molding temperature.

5. Demolding:

   • Utilize the downward and upward movement of the hydraulic press to demold and remove the product.

6. Post-Molding Processing:

   • Process the demolded filter plates, including edge trimming and hole punching.

Firstly, polypropylene is heated and melted, and the extruded material is different depending on the size of the filter plate. The polypropylene that meets the weight standard is fed into the 2000-ton four-column hydraulic press. After molding, the filter plates are taken out, placed for cooling, and then the semi-finished products are placed on a fully automatic CNC machine for processing. This ensures uniformity in size and shape for each piece. After edge trimming, hole punching, and other operations, the finished filter plates are obtained. While the process may seem simple, precise control of the details is crucial.

The 2000-ton filter plate molding hydraulic press adopts a three-beam four-column structure design. The equipment consists mainly of the main machine and control mechanism. The hydraulic press's main machine part includes the hydraulic cylinder, crossbeam, columns, and liquid filling device. The power mechanism comprises an oil tank, high-pressure pump, control system, electric motor, pressure valve, directional valve, etc. The hydraulic press has an independent power mechanism and electrical system, with centralized control using buttons, allowing adjustment, manual, and semi-automatic operation modes. The process action sequence of the 2000-ton filter plate molding hydraulic press is as follows for the slide: quick descent, slow descent with pressure, holding pressure delay, air exhaust, pressure release delay, and return. The equipment demonstrates significant efficiency, high molding pressure, reliability, and ensures the molding quality of thermoplastic materials. The hydraulic press for filter plate molding offers high automation, short production cycles, and high production efficiency. Equipped with a PLC servo control system, it provides high precision, efficiency, energy savings, environmental protection, and other advantages.

Selection Criteria for Filter Plate Hydraulic Press:

Typically, for a 1.5-meter filter plate, an 800-ton hydraulic press is used, a 1.6-meter filter plate requires a 1000-ton hydraulic press, and for around 2.5 meters, a 2000-ton hydraulic press is suitable.

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