870 Box-type Hydraulic Press Filter Machine Assists in the Upgrading of the Process Dewatering Project of Corn Starch Factory

Project Background

A well-known corn starch production enterprise, during the process of extracting starch, needs to efficiently dehydrate the initial starch slurry to obtain starch wet basis with the required dryness. The old dehydrating equipment used before was inefficient, and the moisture content of the starch cake fluctuated greatly, which directly affected the energy consumption of the subsequent drying process and the quality of the final product. To enhance the automation level of the production line and product consistency, the factory decided to introduce a new generation of dehydrating equipment.

Core challenge

High product quality requirements: The dehydration process must be stable and uniform, avoiding local moisture accumulation or cracking, in order to ensure the uniformity of the wet basis of the starch.

Health and compliance requirements: The parts of the equipment that come into contact with the materials must comply with the relevant standards of the food industry to ensure that they do not cause contamination to the products.

Efficiency bottleneck: The single-cycle time of the old equipment is too long, which has become a bottleneck for increasing the overall production volume.

Easy cleaning: When changing product batches, the equipment must be easy to clean thoroughly to prevent cross-contamination.

Solution

After conducting an in-depth analysis of the process requirements, we provided them with a food industry-specific 870 box-type hydraulic filter press:

Core equipment: Two 870 box-type hydraulic filter presses with a filtration area of 100 square meters.

Compliance design: The core filtration component - the filter plates - are made of food-grade certified reinforced polypropylene material, which is non-toxic, odorless, corrosion-resistant, and fully meets the contact requirements of the food industry. Special surface treatment has been carried out for the frame and other non-contact parts, and an anti-clogging structure has been designed, which greatly facilitates thorough cleaning.

Precise control: The PLC system is utilized to precisely control the entire process of feeding, pressing and discharging, ensuring that the operating parameters for each batch are consistent, thereby guaranteeing the uniformity of the starch cake.

Outcomes and Value

After the new equipment was put into operation, it quickly demonstrated significant value in improving product quality and efficiency:

Product quality has significantly improved: The moisture content of the wet base of the starch is stably controlled within an extremely narrow range of 38% ± 1%, providing extremely stable conditions for subsequent airflow drying. As a result, the whiteness and purity of the final starch product have both increased.

Production efficiency has significantly increased:

• The fully automatic operation has shortened the single cycle period by 25% and increased the daily processing capacity of starch slurry by more than 30%.
• Automation of unloading has replaced the arduous manual operations, liberating the workforce.

Hygiene and cleanliness compliance: Food-grade polypropylene filter plates and optimized structural design perfectly meet the hygiene and cleanliness requirements of food production. The equipment cleaning and filter cloth replacement times are significantly shortened, effectively ensuring product purity.

Customer Testimonial

"The effect of this process upgrade was immediate. The starch cakes produced by this 870 filter press are as uniform as 'standard parts', making our subsequent drying operations very smooth. Its food-grade material and easy-to-clean design have given us greater confidence in the stability of our production and the safety of our products."
-- Customer Production Director, Mr. Li