Over 10,000+ customers' choice, Focus on screening industry 40+ years
In salt production, classification screening is a fundamental yet critical step. From removing impurities from raw salt to separating refined salt into coarse, medium, fine and extra‑fine fractions according to national standards, every stage depends on screening equipment.
However, many salt producers face a dilemma when choosing screening equipment. Traditional vibrating screens offer reasonable accuracy but limited capacity – using multiple lines in parallel takes up too much floor space and complicates management. Tumbler screens provide high throughput but sometimes struggle with fine classification for certain special salt types. Is there a screening machine that delivers both the capacity needed for large‑scale production and the accuracy required to meet national grading standards?
Gaofu Machinery's answer is the Probability Screen.
The probability screen is not a "compromise" – it is a "differentiated strategy." Positioned between conventional vibrating screens and tumbler screens, the probability screen has carved out its own niche. Built around the core concepts of high capacity, no blinding, and low maintenance, it is particularly suited for large‑scale, continuous screening of table salt and industrial salt where throughput is the top priority. It has become the preferred solution for many large salt producers.
Compared with traditional equipment such as linear vibrating screens, rotary vibrating screens and tumbler screens, the Gaofu Salt Probability Screen offers significant differences in capacity, screening efficiency, anti‑blinding performance and ease of maintenance – creating a unique "probability advantage".
1. Capacity Comparison: One Machine Replaces Several
Traditional linear vibrating screen: Single‑unit capacity is limited by screen area and vibration amplitude. To achieve large‑scale output, multiple units must be run in parallel, requiring more equipment, more floor space and complex pipework.
Gaofu Salt Probability Screen: Uses a large mesh opening, steep inclination angle and multi‑deck design. Material passes through the screen quickly, and the processing capacity per unit screen area is 5 to 10 times higher than ordinary screens, with screening time only 1/3 to 1/20 that of conventional screens. The Gaofu GLS Probability Screen covers a capacity range from 10 tonnes/hour to 300 tonnes/hour. In practical applications, a single GLS probability screen can replace the output of multiple ordinary vibrating screens.
Conclusion: For high‑capacity salt screening, the probability screen is the clear winner in throughput.
2. Screening Accuracy & Efficiency: Stable High Precision
Traditional screens: Some types offer high accuracy but limited capacity; others provide high capacity but unstable accuracy, with material easily mixing between fractions.
Gaofu Salt Probability Screen: Uses 2 to 5 screen decks in a stepped arrangement – from top to bottom, mesh size decreases while inclination angle increases. This design allows material to stratify rapidly: coarse particles are discharged quickly from the top deck, medium fractions are accurately separated on the middle decks, and fines exit from the bottom deck. Overall screening efficiency reaches over 95%. Combined with a curved screen surface and a ratchet tensioning system, the screen cloth remains tight and stable, material travels evenly without build‑up, effectively solving the common problems of "slow travel, thick material layer, incomplete screening" seen in ordinary screens.
Conclusion: At the same capacity requirement, the probability screen achieves both good accuracy and very high efficiency – balancing output and precision.
3. Anti‑Blinding Performance: No Blinding, No Stoppage
Traditional linear screens: Salt screening easily causes screen blinding, especially when fine or moist salt cakes on the surface. This requires stopping the machine for cleaning and frequent screen changes.
Gaofu Salt Probability Screen: Uses a large mesh opening design (the mesh size is usually larger than the actual cut point), which physically reduces the risk of blinding. In addition, the curved screen surface allows material to discharge very quickly, so the material layer never builds up and the apertures stay clear. Optional bouncing ball systems and ultrasonic systems can also be added for handling more difficult or sticky salt powders.
Conclusion: The probability of screen blinding is extremely low, ensuring stable continuous operation for large‑scale production.
4. Maintenance Cost & Screen Change: Easy and Fast
Traditional linear screens: The screen frame is an integrated structure. If one deck is damaged, the whole assembly must be dismantled. Changing a screen cloth often takes over one hour.
Gaofu Salt Probability Screen: Uses a modular, separate‑deck design. Both the front and rear discharge sections are removable. Only the damaged deck needs to be replaced – a single deck can be changed in just a few minutes. Moreover, screen cloth life reaches 40‑60 days, which is 2‑3 times longer than ordinary screens.
| Comparison Aspect | Traditional Linear / Rotary / Tumbler Screens | Gaofu Salt Probability Screen |
| Capacity | Medium per unit; multiple units needed for high output | 10–300 tonnes/hour – one machine replaces several |
| Screening efficiency | Varies; some models have lower efficiency | ≥95% – stable and reliable with multi‑deck design |
| Blinding frequency | Prone to blinding, frequent stoppages for cleaning | Large mesh openings + curved design – very low blinding risk |
| Screen change | Full disassembly, takes over 1 hour | Single‑deck replacement – takes only minutes |
| Maintenance cost | Frequent maintenance, long working hours | 2‑3 times longer screen life – much lower maintenance time |
| Sealing / environmental | Some models leak dust | Fully enclosed – zero dust escape |
Beyond the advantages listed above, the Gaofu Salt Probability Screen incorporates several thoughtful details:
Fully enclosed multi‑deck design: The number of decks can be configured as needed, up to five decks. One feed, multiple product fractions – meeting the full range of coarse, medium, fine and extra‑fine salt classification requirements.
Curved screen surface + ratchet tensioning: The curved design allows material to spread and pass through quickly. The external ratchet tensioning system keeps the screen cloth tight without loosening, preventing the "sagging" that can harm accuracy.
Flexible discharge ports: Both the rear and front discharge sections are removable, allowing operators to access and change the screen cloth from either side of the machine – greatly improving on‑site flexibility.
Standard dust collection port: The top cover is designed with a dust collection connection, allowing easy integration with the customer's existing dust extraction system to create a complete dust‑free screening line.
Back to the original question: high capacity, high efficiency, no blinding, low maintenance – traditional screens always seem to have at least one weakness. The probability screen combines all these advantages.
The Gaofu Salt Probability Screen proves its indispensability with real‑world data: high processing capacity – one machine can replace several ordinary screens; longer screen life – extended maintenance intervals and lower costs; simple screen changes – the production line doesn't stop because of screening issues; fully enclosed dust‑free design – meeting the requirements of modern green workshops and food safety.
For salt producers, if you are facing any of the following situations:
Salt output is rising and existing screens have become a bottleneck;
Multiple parallel screens are taking up too much floor space and are complex to manage;
Screens blind or wear out frequently, causing production stoppages;
You need to balance high capacity with national standard classification accuracy.
Then the Gaofu Salt Probability Screen is your preferred solution.
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was originally founded in the 1980s. After more than 40 years of development, the company has become a "National Specialized and Sophisticated 'Little Giant' Enterprise", a "National Green Factory", a "National High-tech Enterprise", a "National Intellectual Property Advantage Enterprise", and the "President Unit of the Vibration Association". It also hosts the "Henan Provincial Industrial Design Center", the "Henan Provincial Engineering Technology Research Center for Intelligent Online Screening Systems", and the "Xinxiang Municipal Engineering Technology Research Center for Fine Screening". The company has been granted more than 500 invention, utility model and design patents, has received the "Science and Technology Achievement Award" issued by the Ministry of Industry and Information Technology, and has participated in drafting four "National Standards".
Gaofu's product portfolio covers several series and hundreds of varieties, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment, and automated material handling systems. Its main products include vibrating screens, screening machines, vibrating sifters, rotary vibrating screens, ultrasonic vibrating screens, linear screens, air flow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeders, dust-free feeding stations, ton bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag discharge filters, leaf filters, clay filters, toothed roll crushers, coal crushers, and other equipment. These are widely used in many industries such as food, pharmaceuticals, chemicals, metallurgy, building materials, mining, thermal power, and environmental protection, earning the trust and praise of over 10,000 customers worldwide.
Gaofu products are not only popular in Greater China but are also exported to more than 100 countries and regions, including Russia, Canada, the United States, New Zealand, Japan, Brazil, South Africa, etc. The company adheres to its mission: "Enhance material quality and efficiency, meet customer needs", walking side by side with customers for harmonious and win-win cooperation. Today, Gaofu has become an approved supplier to many Fortune 500 companies, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO Group, China National Building Material Group, China Aerospace, and Jinchuan Group.
Gaofu Machinery – Global No.1 in Vibrating Screen Sales. In May 2024, Frost & Sullivan, an international authoritative advisory firm, based on its research on the global vibrating screen market and calculated according to global vibrating screen sales volume in 2023, issued a market position confirmation certificate to Gaofu Machinery.
