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YS Hydraulic Three Roller Mill
YS Hydraulic Three Roller Mill
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Introduction
In modern industrial production, the demand for the refined processing of medium and high-viscosity materials has become increasingly stringent. Industries including metal pastes, printing inks, conductive inks, adhesives, sealants and greases are raising unprecedented requirements for particle size distribution, grinding accuracy, production efficiency and operational stability. Traditional grinding equipment generally suffers from insufficient parameter adjustment accuracy, low automation, non-traceable production data and limited application versatility, making it difficult to process high-performance fine materials such as new nanomaterials, precious metal pastes and functional ceramics. With in-depth insight into industry demands and sustained technological innovation, Changzhou Longxin Intelligent has launched the YS-YSS hydraulic three-roll mill. Featuring core strengths of precision, flexibility and high efficiency, it delivers one-stop precision grinding solutions for advanced manufacturing and redefines the technical standards for medium and high-viscosity material processing.
High-end Manufacturing Drives New Demands for Precision Grinding
At present, the global manufacturing industry is transforming toward high-end refinement and intelligence, with continuously rising requirements for processing accuracy, stability and efficiency across all application sectors.
- In the field of metal pastes, the miniaturization and high integration of electronic components require pastes to feature narrower particle size distribution and higher dispersion uniformity, so as to guarantee core properties such as electrical and thermal conductivity.
- Within the printing ink industry, high-end products including UV-curable inks and anti-counterfeiting inks demand higher color saturation, glossiness and adhesion, which rely on the thorough refinement and uniform dispersion of pigment particles during grinding.
- As a key material for electronic printing, the electrical conductivity of conductive ink is directly determined by grinding accuracy, affecting the quality and service life of flexible electronics, IoT devices and other end products.
- Adhesives, sealants, greases and similar products have strict specifications for viscosity control and particle fineness, which directly determine bonding strength, sealing performance and lubrication effect.
Meanwhile, the industry has seen a growing demand for automated, digitalized and traceable production workflows. Conventional three-roll mills largely rely on manual operation with limited adjustment precision. Human errors are unavoidable during production, and production data cannot be effectively recorded or traced, resulting in inconsistent product quality and fluctuating qualification rates. In addition, alongside stricter environmental regulations and rising production costs, enterprises have an urgent need for energy-saving equipment, reduced material waste and higher productivity.
Tailored to address these industry pain points, the YS-YSS hydraulic three-roll mill integrates digital control, ultra-precision grinding, high output capacity and multi-scenario adaptability. It precisely meets the precision processing needs of advanced manufacturing and provides solid technical support for high-quality industrial development.
Working Principle
Integration of Hydraulic Drive and Digital Control
The core working principle of the YS‑YSS hydraulic three‑roll mill relies on shearing, extrusion and grinding between three rollers. Through the coordinated operation of the hydraulic system and digital control system, it realizes efficient and refined processing of medium and high‑viscosity materials.
During operation, the motor drives three rollers to rotate at different linear speeds via the transmission system. Materials enter the gap between the front and middle rolls from the feeding inlet, and undergo preliminary dispersion and grinding under roller shearing and extrusion. The materials then pass into the narrower gap between the middle and rear rolls for secondary fine grinding. With the rotating speed of the three rollers increasing in sequence, a stable speed gradient is formed. Combined with the shear force generated by the speed difference and the constant pressure provided by the hydraulic system, material particles are gradually refined to reach the required grinding precision.
(1) The electro‑pneumatic roller pressing system serves as the core guarantee for high‑precision grinding.
Adopting hydrodynamic roller pressing technology, it precisely controls the pressure between rollers through hydraulic devices, maintaining constant and repeatable roller pressure within the grinding gap, and ensuring uniform and consistent grinding results.
(2) The digital control system monitors key parameters such as roller speed, gap and pressure in real time, and automatically adjusts operating conditions according to preset process formulas to achieve automatic closed‑loop control of the entire grinding process.
(3) After grinding is completed, an automatic scraper peels off materials attached to the roller surface and discharges them into a self‑fitting discharge bin to complete discharging.
(4) Three operating positions — Grinding, Mixing and Release — are available for flexible switching to meet diverse processing needs:
- Grinding position: for ultra‑fine grinding and dispersion;
- Mixing position: providing pressing gaps for material blending;
- Release position: separating rollers for easy cleaning, greatly improving operational flexibility and practicality.
Equipment Structure: Synergy of Compact Design and Precision Components
The YS‑YSS hydraulic three‑roll mill features a compact and rationally arranged overall structure, which ensures stable performance and convenient operation while effectively saving production space.
The equipment mainly consists of core modules including the roller system, hydraulic control system, transmission system, digital control system, frame & safety protection devices, and cleaning system. All components work in synergy to guarantee high‑efficiency and stable operation.
(1) As the core working component, the roller system is manufactured by centrifugal casting. A variety of high‑end materials are optional, such as premium alloy, zirconia, alumina, silicon carbide and silicon nitride, to adapt to different grinding requirements.
The cylindricity and concentricity of rollers are controlled within 2 μm. Such ultra‑high machining accuracy lays a solid foundation for precision grinding. The minimum roller gap is less than 1 μm, enabling ultra‑precision material grinding with a minimum finished particle size of 1 μm.
(2) The transmission system is equipped with high‑quality motors and precision transmission mechanisms to deliver stable and accurate roller speed, with multi‑gear speed regulation available for customized process demands.
(3) The hydraulic control system adopts advanced electro‑pneumatic control technology to accurately adjust the pressure between rollers, with an adjustable pressure range of 5–120 N/mm, suitable for processing materials of different viscosities.
(4) The digital control system adopts a touchscreen operation interface and integrates Siemens PLC. It enables precise control over roller speed, gap, pressure and other parameters, supports pressure curve monitoring, and connects to MES systems to realize real‑time collection, storage and traceability of production data.
(5) The frame is made of aviation aluminum, stainless steel or painted materials with customizable options. The easy‑to‑clean frame design (cleanroom version optional) meets the requirements of various production environments.
(6) The machine is equipped with a full‑range automatic electrical protection system, including motor overload protection and nip safety protection devices. The rotating stainless steel safety cover and electric detection of the collecting tank fully protect operators and ensure safe and reliable equipment operation.
(7) The cleaning system allows automatic setting of the maximum roller gap and minimum operating torque for fast cleaning, reducing material residue and improving overall production efficiency.
Performance Features
Triple Breakthroughs in High Capacity, High Precision and High Flexibility
The YS-YSS hydraulic three-roll mill delivers comprehensive performance breakthroughs, integrating the core advantages of high throughput, high precision and high flexibility to maximize customer value.
(1) High Production Capacity
Designed with ultra-high roller speed and excellent cooling performance, the equipment greatly improves material processing efficiency.
Intelligent functions such as automatic scraper adjustment and zero-point setting minimize manual intervention and shorten preparation time, achieving maximum productivity and advanced processing capacity. Stable operation and high material yield effectively reduce raw material waste, improve resource utilization, and bring substantial economic benefits.
(2) High Precision as Core Competitiveness
The built-in digital control system supports recipe storage to ensure consistent quality across batches. The intuitive control unit enables operators to set parameters accurately, while long-term production data trend analysis provides solid support for process optimization.
Ultra-high roller precision (cylindricity ＜ 2 μm, concentricity ＜ 2 μm) and precise gap control (minimum below 1 μm) guarantee superior grinding accuracy, enabling the production of products with narrow particle size distribution and meeting stringent standards in high-end manufacturing. Moreover, it features outstanding reproducibility unmatched by conventional three-roll mills, stabilizing product quality for every batch.
(3) High Flexibility via Multi-mode Operation & Customized Design
Three working modes — gap mode, pressure mode, and combined gap & pressure mode — are optional to adapt to different material characteristics and processing requirements.
The linear pressure range of 5–120 N/mm ensures outstanding versatility, capable of processing medium, high and ultra-high viscosity slurries.
In addition, the housing treatment process, roller materials and scraper materials are fully customizable. Multiple scraper options including metal blades, ceramic blades and fiberglass blades are available to satisfy diverse grinding and discharging demands.
(4) User-friendly Operation, Safety and High Return on Investment
The touchscreen control and visualized graphic interface simplify operation and parameter configuration, saving working hours and boosting overall productivity.
A full-range safety protection system and standardized safety devices provide reliable protection for operators.
With high-output operation, low material waste, and gentle dispersion for contaminant-free and temperature-sensitive materials, the machine presents remarkable technical advantages. It performs exceptionally well in enhancing the glossiness of printing inks and helps customers achieve an optimized return on investment.
Technical Upgrades
Driven by Patented Innovations to Lead Industrial Progress
The outstanding performance of the YS‑YSS hydraulic three‑roll mill stems from Longxin Intelligent’s continuous technological innovation. Equipped with a full range of core patented technologies, the equipment has been optimized and upgraded in key links including motor installation, roller control, material baffle adjustment and discharging design, comprehensively enhancing overall performance and operational reliability.
(1) Fine Adjustment Mechanism for Motor Mounting (Utility Model Patent: ZL202021925881.5)
It solves the limitations of traditional fixed motor installation and insufficient adjustment accuracy. This structure enables precise fine‑tuning of the motor mounting position, ensures accurate connection between the motor and transmission system, improves transmission efficiency and stability, reduces vibration and noise during operation, and extends equipment service life.
(2) Self‑fitting Discharge Tank (Invention Patent: ZL202010843863.0) & Automatic Fitting Roller Material Baffle (Invention Patent: ZL201610442589.X)
These two patented designs realize automatic and precise discharging and baffle adjustment.
The self‑fitting discharge tank automatically adjusts the discharge angle and position according to roller operation to achieve complete material collection and minimize waste.
The automatic fitting roller baffle adaptively adjusts its bonding degree with rollers based on material viscosity and grinding requirements, effectively preventing material leakage, eliminating manual adjustment errors, and stabilizing continuous production.
(3) Roll Press with Controllable Roller Gap and Pressure
It establishes a dual high‑precision control system for roller gap and pressure regulation.
Supported by advanced sensing technology and control algorithms, it monitors and adjusts roller clearance and pressure in real time, stabilizing process parameters throughout the grinding process. It serves as core technical support for ultra‑precision grinding and meets the refined processing requirements of diverse materials.
(4) Automatic Adjustment Device for Three‑roll Mill Material Baffles
It further optimizes baffle adjustment performance.
The device automatically adjusts the baffle position and angle according to real‑time parameters such as feeding volume and material viscosity, ensuring uniform material feeding into the grinding gap. It avoids uneven grinding caused by local material accumulation, reduces manual intervention, and improves production efficiency and batch consistency.
The adoption of multiple core patented technologies enables the YS‑YSS hydraulic three‑roll mill to achieve key technical breakthroughs. Its automation level, control accuracy, operational stability and ease of operation all reach leading industry standards, fully demonstrating Longxin Intelligent’s technical strength and independent innovation capabilities in the field of grinding equipment.
Industry Application: Full‑scene Coverage to Empower High‑quality Development
With superior performance and versatile adaptability, the YS‑YSS hydraulic three‑roll mill is widely applied in advanced manufacturing sectors, delivering customized precision grinding solutions for diverse industries.
(1) Printing & UV Inks
It is suitable for high‑precision processing of UV curable inks, packaging inks, anti‑counterfeiting inks, sheet‑fed inks, offset printing inks and more.
Ultra‑fine grinding thoroughly refines and uniformly disperses pigment particles, effectively improving ink color saturation, gloss and adhesion to meet strict high‑end printing standards. Its high‑capacity design also adapts to large‑scale mass production and boosts overall productivity.
(2) Electronic Slurries
As one of the core application scenarios, it processes metal slurries such as silver paste, aluminum paste, nickel paste, copper paste and platinum paste, as well as solder pastes and functional inks.
Electronic slurries require extremely narrow particle size distribution and uniform dispersion, which directly determine the conductivity and reliability of electronic components. Featuring precise particle size control and stable operation, the YS‑YSS series guarantees consistent core performance of electronic materials, providing reliable raw material support for flexible electronics, semiconductors, solar cells and other industries.
(3) Functional Materials
It processes sealants, adhesives, greases, ceramic slurries, high‑performance composite materials and other products.
For sealants and adhesives, it realizes sufficient mixing and particle refinement to enhance bonding strength and sealing performance. In grease production, precise grinding ensures uniform viscosity and extended service life. Ultra‑fine processing of ceramic slurries also lays a solid foundation for the forming and performance upgrading of functional ceramic products.
(4) Cosmetics & Personal Care
It is widely used in the production of lipsticks, lip balms, sunscreens, foundation creams, hair waxes and other products.
Cosmetics demand high fineness, uniformity and safety of raw materials. The mild dispersion technology of the YS‑YSS series avoids material contamination during processing and achieves ultra‑fine particle refinement, delivering delicate texture, easy spreadability and better user experience for cosmetic products.
In addition, the equipment is applicable to oils, coatings, pigments, colorants, vegetable glue, soap and many other materials. It covers chemical industry, light industry, new materials and other fields, providing efficient, accurate and stable grinding solutions, helping enterprises improve product quality, optimize efficiency and strengthen market competitiveness.
Precision Grinding, Intelligent Creation for the Future
As a benchmark of high‑performance precision grinding equipment, the YS‑YSS hydraulic three‑roll mill is market‑oriented and innovation‑driven. Supported by proprietary technologies, excellent performance, compact structure and wide industry compatibility, it provides a brand‑new refined processing solution for medium and high‑viscosity materials.
It achieves all‑round upgrades in grinding accuracy, production efficiency and operational stability. Meanwhile, digital control, automatic operation and traceable data management help enterprises realize intelligent production transformation, reduce comprehensive costs and improve return on investment.
Adhering to the philosophy of Technological Innovation & Quality First, Longxin Intelligent continuously focuses on the R&D and optimization of grinding equipment. In the future, we will further explore industry pain points in intelligent manufacturing, increase R&D investment, and launch more competitive high‑end processing equipment.
We are committed to providing global customers with high‑quality, efficient precision processing solutions. Hand in hand with industry partners, we will empower high‑quality manufacturing development and write a new chapter in the field of high‑precision manufacturing.
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