Over 10,000+ customers' choice, Focus on screening industry 40+ years
Gaofu's SZF series linear vibrating screen uses dual vibrating motors operating in synchronised opposite directions. When the two motors mounted longitudinally on the screen body run in opposite directions, the lateral excitation forces cancel each other out, while the longitudinal forces are transmitted through the vibration‑transmitting body to the entire screen box, generating linear vibration on the screen surface. Under the excitation force, material moves in a parabolic jumping motion toward the discharge end. Particles smaller than the screen openings pass through to the lower layer, while oversize material travels along the screen surface to the outlet, completing the grading operation.
For crocodile feed and aquatic extruded pellet feed screening, the linear vibrating screen offers the following core advantages:
High‑capacity design meets large‑scale production needs. Gaofu's SZF series linear vibrating screen offers single‑unit throughput covering 1‑100 t/h , with screen width customisable according to production requirements. For example, the SZF‑1540 model has a screen size of 1500×4000 mm, providing a large screening area for high throughput. A single machine can meet the capacity needs of an entire production line.
Multi‑deck grading completes multiple steps in one pass. The equipment supports 1 to 5 screen decks , enabling 2 to 6 different particle size fractions in a single feed. For crocodile feed production, the upper deck intercepts large impurities and lumps, the middle decks achieve different size fractions, and the lower deck removes fines and broken pellets – one machine, multiple functions, reducing material transfer between units.
High grading accuracy prevents size mixing. Gaofu's linear vibrating screen achieves screening accuracy of over 95% , with grading fineness covering 0.075‑150 mm. The output particles are uniform in size, effectively preventing size mixing and ensuring finished feed meets specifications with reliable purity.
Fully enclosed structure improves the workshop environment. The equipment can be configured with a fully enclosed structure or negative‑pressure extraction system, effectively reducing dust emission during screening and improving working conditions. For aquatic feed screening – where high animal protein content can generate odours – this design offers practical value.
Stable operation supports 24/7 continuous production. Gaofu's linear vibrating screen has a robust design with a low failure rate. The excitation angle can be adjusted according to material characteristics, ensuring stable operation while maintaining high screening efficiency. For feed production lines that run 24/7, equipment stability is a key factor in maintaining overall line utilisation.
The main technical parameters of Gaofu's SZF series Crocodile Feed Linear Vibrating Screen are as follows (actual values depend on the specific model and configuration):
| Parameter | Range / Specification |
| Models available | SZF‑520 to SZF‑1540 |
| Number of screen decks | 1-5 |
| Grading fineness | 0.075‑150 mm (0.075 mm‑500 mesh) |
| Grading efficiency | >95% |
| Throughput | 1‑100 t/h |
| Installed power | 0.75‑30 kW |
| Screen mesh material | Carbon steel, stainless steel (304/316L optional) |
| Mesh opening size | Customisable |
Note: The above values are for reference. Actual throughput depends on material characteristics, screen mesh size, and other factors. Pre‑purchase evaluation with your own material and operating conditions is recommended.
Gaofu's SZF series linear vibrating screen is used in the following aquatic feed production scenarios:
Raw material pre‑treatment: Screening corn, soybean meal, fish meal, and other raw materials to remove impurities such as straw, stones, and twine, ensuring smooth downstream grinding and pelletising operations.
Powder cleaning before extrusion: Screening powdered raw materials before the extruder to remove lumps and foreign matter, ensuring extrusion quality and final product consistency.
Finished pellet grading: After drying and cooling, extruded pellets are graded through the linear screen, separating different pellet sizes into specification grades while removing broken pellets and fines.
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.
