Specialized Solution for Filtering Thick Jujube Paste - High-Efficiency Empowerment for Food Processing with Slurry Pumps and Diaphragm Filter Presses
I. Customer Background
A well-known American enterprise specializing in jujube products: core demands in food processing (jujube paste, jujube jam, and jujube extract production) include continuous filtration and separation for thick jujube paste (viscosity approximately 5000-8000 mPa・s) containing fruit pulp and fiber impurities. The processing capacity should reach 200L/h, with low moisture content in the filter cake, easy detachment, and equipment meeting food-grade hygiene standards to prevent material contamination.
II. Project Challenges
The high viscosity of jujube paste makes it difficult for traditional filtration equipment (plate and frame filter presses) to feed, often leading to filter cloth clogging and long filtration cycles (2.5 hours per cycle), which cannot meet continuous production requirements. The original equipment's filtration precision is insufficient, leaving a large amount of fruit pulp and fiber in the filter cake, affecting the taste and quality of subsequent deep-processed products such as jujube cakes and jujube juice beverages. The high moisture content of the filter cake (about 65%) increases energy consumption in subsequent drying processes, raising production costs. The equipment is difficult to clean, and residual materials can breed bacteria, failing to meet GMP hygiene standards for food production.
III. Customized Solution
Based on the customer's working conditions and the special requirements of the food industry, we provide an integrated filtration system of "food-grade slurry pumps + fully automatic diaphragm filter presses", with core configurations and technologies as follows:
1. Core Equipment Selection
| Equipment Name | Model Specification | Key Adaptation Design |
|---|---|---|
| Food-grade Slurry Pump | 50ZJ-I-A33 | ① Material: Flow-through parts made of 304 stainless steel, meeting food contact safety standards; ② Structure: Large-channel impeller (impeller diameter 50mm) to prevent fruit pulp and fiber entanglement and clogging; ③ Drive: Variable-frequency speed control motor (5.5kW, 7.45HP), adjustable feed pressure (0.3-0.6MPa) based on material viscosity to prevent filter cloth clogging due to excessive feed speed. |
| Fully Automatic Diaphragm Filter Press | XMYZ20/800-UB | ① Filtration area: 20㎡, 32 filter plates, suitable for 200L/h processing capacity; ② Material: Filter plates made of food-grade reinforced polypropylene (PP), sealing parts made of food-grade silicone rubber, no hygiene dead corners; ③ Pressing method: Diaphragm high-pressure pressing (pressure 0.8-1.2MPa), enhancing dehydration effect for viscous materials; ④ Filter cloth selection: Food-grade polyester monofilament filter cloth (pore size 5μm), resistant to acid and alkali, easy to clean, effectively retaining fruit pulp and fiber impurities while ensuring the clarity of the filtrate. |
2. Process Flow Design
Jujube paste raw material → Food-grade slurry pump (variable-frequency speed control feeding) → Diaphragm filter press (high-pressure pressing filtration) → Clear filtrate (recycled for jujube juice blending) → Low moisture content filter cake (collected for feed processing or drying recovery) → Equipment automatic cleaning (reverse flushing of filter cloth with clean water to avoid residue).
IV. Core Advantages of the Solution
Customized adaptation: Optimized slurry pump impeller structure and diaphragm filter press pressing parameters for viscous materials, avoiding the low efficiency caused by one-size-fits-all selection.
Food-grade guarantee: All contact parts throughout the process are made of 304 stainless steel + food-grade sealing parts, meeting food processing hygiene requirements.
High efficiency and energy saving: The combination of high-pressure diaphragm pressing technology and variable-frequency feeding control improves filtration efficiency while reducing energy consumption and maintenance costs.