Since its establishment in 1976, Zhanghua Pharmaceutical Equipment Co., Ltd. (hereinafter referred to as "Zhanghua Pharmaceutical") has been dedicated to the research and production of drying equipment in the pharmaceutical and chemical fields. Its core product, the "Filter Washing 2-in-1 Equipment," has become an excellent product in the industry due to its innovative design and high efficiency performance. This article will comprehensively analyze the comprehensive advantages of the device from the dimensions of technical principles, structural characteristics, application fields, and market feedback.
1、 Technical principles and functional integration
The core of the filtration and washing two in one equipment is to integrate the two independent processes of filtration and washing in traditional production into a single continuous operation, greatly improving efficiency. Its working principle is divided into three stages:
1. Filtration stage: The material is separated into solid and liquid through a built-in filter plate (adjustable pore size of 5-50 μ m), with a filter cake thickness of up to 500mm and a mother liquor recovery rate of over 99%.
2. Washing stage: Dynamic stirring technology is used, and the agitator scrapes the filter cake layer by layer at an infinite speed of 0-20 revolutions per minute, and evenly distributes the washing solution through a spray system to ensure that residual mother liquor is removed. Specially designed hollow stirring blades can be fed with a heat medium to achieve simultaneous pre dehydration.
3. Sealed operation: The equipment adopts a fully enclosed structure, combined with AISI 304/316L stainless steel or silicon carbide material, to meet GMP sterile requirements and eliminate the risk of cross contamination.
2、 Innovative Structure and Technological Highlights
1. Modular design: The chassis supports both fixed and detachable options, with the latter equipped with hydraulic driven wheels for quick disassembly and cleaning of the filter plate, reducing downtime.
2. Thermodynamics optimization: The triple heating system of the sidewall jacket, filter plate bottom, and stirring blades, combined with a vacuum negative pressure environment, increases the wet evaporation rate by 40% and reduces energy consumption by 30%.
3. Intelligent control: Integrated frequency conversion speed regulation, PLC automatic control, and online monitoring system, supporting CIP in-situ cleaning, achieving precise adjustment of process parameters (temperature, pressure, speed).
3、 Industry Applications and Typical Cases
This device has been widely used in:
-Pharmaceutical field: post-treatment of raw material drug crystallization, antibiotic filtration, etc., meeting FDA and GMP certification requirements. For example, North China Pharmaceutical Group has purchased over 80 sets for the production of high-purity drugs.
-Fine chemical industry: catalyst recovery, purification of dye intermediates, and other scenarios, especially in the treatment of viscous and thermosensitive materials.
-Environmental engineering: industrial wastewater sludge dewatering, hazardous waste resource utilization treatment, with low energy consumption characteristics, has become the preferred solution for green manufacturing.
4、 Market competitive advantage
1. Replace traditional equipment: A single machine can replace multiple devices such as filter presses, centrifuges, and drying ovens, saving more than 50% of factory space.
2. Customized services: More than 20 configuration options are provided, including solid/hollow mixing shafts, metal seals/quick opening discharge valves, etc., to adapt to different material characteristics.
3. Cost effectiveness: Taking a pharmaceutical company's annual production of 500 tons of active pharmaceutical ingredients project as an example, adopting this equipment reduces comprehensive energy consumption by 25% and labor costs by 60%.
5、 R&D iteration and industry recognition
Zhanghua Pharmaceutical has established a long-term technical cooperation with Shanghai Pharmaceutical Industry Research Institute to continuously optimize equipment performance. Its products have passed the review of the US FDA, and have been successfully exported to Taiwan, China and other regions of China, serving more than 300 customers in total, including Harbin Pharmaceutical Group, Lukang Pharmaceutical and other enterprises. The new generation of models launched in 2024 will introduce IoT remote operation and maintenance functions, further consolidating its technological position.
Conclusion
As a representative achievement of the localization of pharmaceutical equipment, Zhanghua Pharmaceutical's filtration and washing two in one equipment has redefined the production standards of solid-liquid separation through process integration and technological innovation. In the future, with the deepening demand for intelligence and green manufacturing, this device will demonstrate its core value in more fields.