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Product Description
The ZS Type Vibrating Screen by Chenxing Machinery is a high-performance stainless steel vibrating screen engineered for precise particle and flake grading across pharmaceutical, food, chemical, and plastic processing industries. Featuring a dual-layer stainless steel mesh configuration (6 mm top layer, 2 mm bottom layer), this industrial screen delivers efficient multi-stage classification with outputs ranging from 300 to 800 kg/h across three standard models. All product-contact components are fabricated from corrosion-resistant stainless steel (SS304 or 316L), ensuring compliance with GMP, FDA, and hygiene-critical standards. Designed as a core auxiliary component within pelletizing lines, the ZS series seamlessly bridges the gap between granulation and packaging, providing reliable, automated granule separation with minimal operator intervention.
| Parameter | ZS350 | ZS500 | ZS800 |
|---|---|---|---|
| Motor Configuration | Single Motor | Dual Motor | Dual Motor |
| Motor Power (kW) | 0.2 | 0.2 × 2 (0.4 total) | 0.2 × 2 (0.4 total) |
| Overall Dimensions (L×W×H, mm) | 1150 × 450 × 550 | 1400 × 600 × 650 | 1700 × 700 × 700 |
| Screen Layers | 2 (Dual-Layer) | 2 (Dual-Layer) | 2 (Dual-Layer) |
| Top Screen Mesh (mm) | 6 | 6 | 6 |
| Bottom Screen Mesh (mm) | 2 | 2 | 2 |
| Output Capacity (kg/h) | 300 | 500 | 800 |
| Contact Material | Stainless Steel | Stainless Steel | Stainless Steel |
| Drive Mechanism | Eccentric Block Vibration | Eccentric Block Vibration | Eccentric Block Vibration |
Note: Dual-motor configurations employ two 0.2 kW motors operating in tandem for enhanced vibration force and operational stability. Non-standard customizations — including alternative mesh apertures, material grades, motor ratings, and dimensions — are available upon request.
The ZS vibrating sieve incorporates two stacked screen decks — a coarse 6 mm upper mesh for primary rough grading and a fine 2 mm lower mesh for precision separation. This architecture enables simultaneous three-fraction output (oversize, middlings, and fines) in a single pass, eliminating the need for tandem screening stages. For operations integrating plastic crushers upstream, the coarse fraction can be recycled for re-grinding, while the fine fraction proceeds directly to downstream packaging or compounding.
Every component that contacts process material — the screen frame, mesh panels, feed hopper, discharge chutes, and sealing gaskets — is manufactured from austenitic stainless steel (SS304 standard; SS316L optional). This full stainless construction provides inherent corrosion resistance against acidic, alkaline, and saline process environments, withstands repeated CIP (Clean-in-Place) and SIP (Steam-in-Place) cycles, and eliminates the risk of ferrous contamination in pharmaceutical-grade and food-grade applications. For manufacturers running PVC hot-cutting pelletizing lines, the stainless steel construction ensures long service life even when exposed to HCl off-gassing from thermally stressed PVC formulations.
With motor ratings as low as 0.2 kW (ZS350) to 0.4 kW total (ZS500/ZS800), the ZS series achieves high-throughput screening at remarkably low specific energy consumption. The eccentric block drive mechanism converts rotary motor motion directly into directional vibration without intermediate gearboxes, belts, or hydraulic systems — minimizing transmission losses and maintenance points. Compared with conventional rotary sifters requiring 1.5–3 kW for comparable throughput, the ZS series offers a compelling total cost of ownership advantage, particularly for continuous 24/7 production environments common in plastic compounding and pharmaceutical manufacturing.
The ZS500 and ZS800 models feature a synchronized dual-motor architecture where two matched 0.2 kW vibration motors are mounted on opposite sides of the screen body. This configuration cancels lateral force vectors, producing a purely vertical-linear or elliptical vibration trajectory that minimizes structural stress on the screen frame, extends bearing service life, and ensures uniform material transport velocity across the full screen width. The balanced design also reduces transmitted vibration to the supporting floor or mezzanine, simplifying installation requirements and improving operator comfort.
Despite delivering up to 800 kg/h throughput, the ZS800 model occupies a footprint of only 1700 × 700 mm — roughly the size of a standard pallet. The modular architecture allows individual components (screen decks, motor assemblies, spring mounts, discharge chutes) to be accessed, cleaned, or replaced independently without full machine teardown. Quick-release toggle clamps on the screen frame enable mesh changeovers in under 10 minutes, supporting rapid product changeovers in multi-product manufacturing facilities. This compact design integrates readily into space-constrained production lines alongside high-speed mixers, extruders, and packaging systems.
Beyond material selection, the ZS series incorporates several design features that support GMP Annex 1 and 21 CFR Part 211 compliance: continuous seam-welded internal surfaces with a minimum 0.8 µm Ra surface finish (electropolishing optional), self-draining geometry that prevents liquid pooling after washdown, minimal crevice and dead-leg zones around clamp fittings and gasket joints, and full disassembly without specialized tools for validated cleaning procedures. These attributes make the vibrating screen suitable for validated pharmaceutical manufacturing environments where cross-contamination risks must be rigorously controlled.
The ZS vibrating screen is designed as a drop-in module for pelletizing lines, with a top-mounted feed inlet that accepts gravity discharge directly from an overhead granulator, cyclone separator, or conveyor. The multiple discharge outlets can be ducted to separate collection bins, big-bag filling stations, or pneumatic conveying systems. When paired with a plastic pelletizer, the ZS screen provides online particle size verification — automatically diverting oversized pellets back to the grinding stage and routing on-spec material to finished product storage. For extrusion lines producing WPC or PVC compounds, this closed-loop classification reduces manual sampling labor and improves final product consistency.
While the standard configuration ships with 6 mm / 2 mm dual-layer mesh, Chenxing Machinery offers a full range of mesh apertures from 0.5 mm to 25 mm in stainless steel woven wire, perforated plate, or wedge-wire construction. Mesh tensioning is achieved through a uniform bolt-tension system that maintains consistent aperture geometry across the entire screen surface, preventing localized sagging and bypass. For abrasive materials such as glass-filled polymers or mineral-filled masterbatch, hardened wear-resistant mesh options are available. The screen deck clamping system is designed to accept third-party mesh panels, giving operators the flexibility to source consumables locally if preferred.
The ZS Type Vibrating Screen operates on the high-frequency vibration principle for material classification:
1. Vibration Generation: When the drive motor(s) start, they rotate eccentric weights mounted on shaft extensions at both ends of the motor housing. Each eccentric weight produces a centrifugal force proportional to its mass, eccentricity radius, and the square of rotational speed. Because the weights are fixed at a specific phase angle relative to each other, the resulting force vector is directional — producing a linear or near-elliptical vibration trajectory rather than chaotic motion.
2. Vibration Transmission: The motor-generated centrifugal force is transmitted to the screen body through rigid mounting brackets. The screen assembly is suspended on a set of coil springs or rubber isolation mounts at each corner, which constrain the screen to vibrate along a defined axis while absorbing dynamic loads before they reach the supporting structure.
3. Material Feeding and Transport: Process material enters through the top-mounted feed inlet and lands on the upper screen deck. Under the directional vibration, particles experience a combination of vertical acceleration (lifting them off the screen surface) and horizontal acceleration (propelling them forward). The net effect is a hopping or skipping motion — particles are repeatedly launched, travel a short horizontal distance during flight, and land further along the screen. This transport mechanism is self-regulating: heavier or larger particles require more force to lift, so they spend more time in contact with the screen and advance more slowly, maximizing their screening opportunity.
4. Multi-Stage Particle Separation: As the particle bed moves along the upper screen (6 mm mesh), particles smaller than 6 mm pass through the apertures and fall onto the lower screen deck, while particles larger than 6 mm continue to the end of the upper deck and discharge as the coarse oversize fraction. On the lower screen (2 mm mesh), the process repeats: particles smaller than 2 mm pass through and collect as the fine product fraction, while particles between 2 mm and 6 mm traverse the lower deck and discharge as the middlings fraction. This single-pass, three-fraction output eliminates the complexity of running multiple single-deck screens in series.
5. Amplitude and Frequency Tuning: The vibration amplitude is adjusted by changing the angular position of the eccentric weights relative to each other — increasing the overlap angle increases the net centrifugal force and thus the stroke amplitude. This adjustment requires no disassembly and can be completed in minutes with basic hand tools. Optimizing amplitude for a given material involves balancing transport velocity (higher amplitude speeds material movement but reduces residence time on the screen) against screening efficiency (longer residence time improves separation accuracy but reduces throughput). For most granule and flake applications in the 300–800 kg/h range, the factory-set amplitude provides an effective balance.
ZS Type Vibrating Screens are deployed in pharmaceutical manufacturing for classifying granulated intermediates post wet granulation or dry compaction, sieving active pharmaceutical ingredient (API) powders to remove agglomerates before tablet compression, and size-verifying finished granules for capsule filling and sachet packaging. The all-stainless construction, validated cleanability, and availability of electropolished surface finishes with Ra ≤ 0.4 µm support GMP Annex 1 compliance. When integrated with crushing and grinding equipment, the screen provides closed-loop particle size control for continuous manufacturing lines.
From dairy powders and infant formula to spice blends and protein supplements, the food-grade vibrating sieve provides reliable foreign-body removal, de-agglomeration of hygroscopic powders, and particle size classification. The dual-layer design is particularly effective for removing oversized agglomerates from spray-dried powders while simultaneously capturing fine dust — producing two streams of saleable product and one reject stream. Stainless steel construction with FDA-compliant silicone gaskets supports 3-A sanitary standards and routine washdown with caustic and acid CIP solutions.
For chemical intermediates, catalysts, pigments, dyes, and coatings additives, the ZS series provides corrosion-resistant classification in environments involving organic solvents, acids (pH 2–12 range), and oxidizing agents. The dual-motor variants (ZS500, ZS800) offer the vibration force needed to screen higher-bulk-density materials such as titanium dioxide (TiO₂) pigment and barium sulfate fillers. When paired with high-efficiency pulverizing systems, the screen provides online particle size verification, ensuring batch-to-batch consistency for downstream dispersion processes in paint, ink, and masterbatch production.
The ZS screen is a critical component in plastic recycling solutions and compounding operations. Post-pelletizing, the screen classifies freshly cut pellets — accepting on-spec material (2–6 mm range with the standard mesh configuration) and diverting oversized pellets and fines for rework. For PVC compounding, the screen handles dry-blend powders, verifying that no unmixed resin pockets reach the extruder feed throat. In WPC foam board extrusion lines, the screen can be positioned after the grinding stage to classify wood flour and ensure consistent particle size distribution before compounding. For operations running disc grinding pulverizers, the screen provides closed-loop control by returning oversize powder to the mill inlet and forwarding on-spec powder to storage.
Vibrating screens are essential in feed milling for removing foreign material from incoming grains and classifying pelleted feed supplements. The ZS series' stainless steel construction resists the corrosive effects of molasses-based feeds, mineral premixes containing sulfates and chlorides, and medicated feed additives. The dual-layer configuration enables simultaneous removal of both oversize tramp material and undersize dust, improving pellet durability index (PDI) and reducing customer complaints.
The ZS Type Vibrating Screen is engineered as a seamless auxiliary module for complete pelletizing lines, forming a critical link in the granulation-to-packaging chain:
Upstream Integration: The screen's top feed inlet accepts direct gravity discharge from a strand pelletizer, water-ring pelletizer, or cyclone separator. No intermediate conveying equipment is required when the pelletizer discharge elevation exceeds the screen feed height. For sub-grade installations, an inclined screw conveyor or vacuum loader bridges the elevation gap.
Downstream Connection: Multiple discharge chutes can be configured for individual collection bins (manual operation), big-bag filling stations (semi-automated), or pneumatic conveying pick-up points (fully automated). Standard chute angles exceed 60° from horizontal, ensuring reliable mass flow for most granules and flakes without bridging or rat-holing.
Control Integration: The motor starter can be interlocked with the upstream pelletizing machine so that the screen starts and stops in synchronization with the pelletizer. Optional PLC integration provides remote start/stop, running-status feedback, and motor overload alarm contacts that can trigger upstream feed shutdown in the event of a screen fault.
Typical Line Configuration: A complete PVC hot-cutting pelletizing line with integrated screening typically follows this sequence: Conical twin-screw extruder → Hot die-face cutter → Pneumatic conveying → Cyclone separator → ZS Vibrating Screen → On-spec pellets to silo, oversize to plastic grinding machine for rework, fines to dust collector.
For manufacturers seeking a single-source equipment supplier, Chenxing Machinery provides the complete upstream and downstream chain — from high-speed mixer, extruder, pelletizer, and plastic crusher through to the ZS vibrating screen and finished-product handling systems.
Chenxing Machinery, headquartered in Zhangjiagang City, Jiangsu Province, brings over 20 years of engineering heritage to every ZS vibrating screen we manufacture.
Factory-Direct Manufacturing: We own and operate our production facilities, including CNC machining centers, laser cutting stations, sheet metal fabrication cells, and a dedicated assembly workshop. Every screen undergoes a factory acceptance test (FAT) — including a continuous run with material simulant — before crating and shipment. Factory-direct operations mean competitive pricing, faster lead times, and direct access to our engineering team for customization requests.
Integrated Ecosystem: Unlike single-product vendors, Chenxing manufactures the complete processing chain. When you source a ZS screen from us, you are working with engineers who understand how it interfaces with extrusion lines, pelletizing systems, disc grinding pulverizers, and mixing systems holistically.
Custom Engineering Capability: Mesh aperture, screen deck count, material of construction (SS304, SS316L, duplex stainless), surface finish, motor voltage/frequency (380V/50Hz, 415V/50Hz, 480V/60Hz), inlet/outlet flange standards, and automation level are configured per order — not from a fixed catalog. Our engineering team reviews your material characteristics, throughput requirements, and plant layout before recommending the optimal configuration.
Global Support: We provide remote commissioning guidance via video call, optional on-site technician dispatch for installation and training, and lifetime technical support. Spare parts — including screen mesh panels, spring mounts, motor assemblies, and gasket kits — are maintained in inventory for same-day dispatch.
CE and ISO Certification: All ZS vibrating screens are manufactured under our ISO 9001:2015 quality management system and carry CE marking, demonstrating conformity with EU Machinery Directive 2006/42/EC health and safety requirements.
The ZS vibrating screen is optimized for dry, free-flowing granules, flakes, and powders with low to moderate moisture content. Typical materials include plastic pellets (PE, PP, PVC, ABS, PS, PA), pharmaceutical granules, food powders (milk powder, starch, sugar, spices), chemical intermediates, pigments, fertilizers, and feed additives. Materials with high moisture content (typically above 8–10%), high fat/oil content, or strong electrostatic charging tendencies may require pre-conditioning or customized screen surface treatments. For applications involving sticky or cohesive powders, contact our engineering team to discuss ultrasonic de-blinding systems or specialized mesh coatings.
Yes. The standard configuration ships with 6 mm upper mesh and 2 mm lower mesh, but Chenxing Machinery offers a full customization range from 0.5 mm to 25 mm. Mesh options include plain-weave stainless steel wire cloth, twill-weave wire cloth, perforated plate (round or slotted holes), and wedge-wire profile screens. For abrasive materials such as glass-fiber-filled compounds, hardened wear-resistant options are available. Mesh panels are designed for quick-change access — typically under 10 minutes for both decks — supporting frequent product changeovers in multi-purpose production facilities.
The standard ZS vibrating screen is configured for dry screening. However, wet screening configurations are available on request, incorporating liquid spray bars above the screen deck, sealed collection sumps with pump-out connections, and upgraded sealing to prevent leakage. Wet screening is typically specified for applications requiring de-agglomeration of filter cake, washing of crystalline products, or classification of slurries. Contact our engineering team with your specific wet-screening requirements for a tailored configuration proposal.
Vibration amplitude is adjusted by changing the angular overlap of the eccentric weights on each motor shaft — increasing the overlap angle increases the net centrifugal force and stroke amplitude. The adjustment requires only basic hand tools (typically an Allen key set) and can be completed in approximately 5–10 minutes per motor. Under normal operating conditions with consistent material feed characteristics, amplitude re-adjustment is rarely needed after initial commissioning. Re-adjustment should be considered when processing a substantially different material (e.g., switching from 300 kg/m³ bulk density powder to 800 kg/m³ granules) or if screening efficiency trends downward despite clean, undamaged mesh panels.
Routine maintenance is minimal and centers on three areas: (1) visual inspection of screen mesh panels for tears, holes, or delamination — frequency depends on material abrasiveness and throughput, typically weekly to monthly; (2) checking spring mount condition annually for signs of fatigue, cracking, or permanent set; (3) motor bearing lubrication every 2,000–3,000 operating hours per manufacturer recommendations. All maintenance access points are designed for tool-free or single-tool access. The screen's simple construction — essentially a rigid frame, two mesh panels, one or two motors, and four spring mounts — means that unscheduled downtime is rare and repairs can typically be completed on-site without specialist intervention.
Absolutely. The ZS screen is designed for straightforward integration into both new and existing pelletizing lines. Motor starters include dry-contact run-status and fault relay outputs that interface with plant-wide PLC or DCS systems. The physical footprint is compact enough to fit into most existing mezzanine or floor-level layouts, and the multiple discharge chute configuration can be adapted to existing downstream conveying or collection infrastructure. For complex integration scenarios, Chenxing Machinery provides on-site survey and integration engineering services to ensure seamless tie-in.
Standard models (ZS350, ZS500, ZS800) with standard specifications typically ship within 4–6 weeks from order confirmation. Custom configurations (non-standard mesh apertures, special materials of construction, custom inlet/outlet flanges, electrical customization) typically require 6–8 weeks. Rush orders can be accommodated — contact our sales team for current production slot availability. After shipment, sea freight to most global destinations requires 2–6 weeks, and our engineering team coordinates container delivery, customs clearance guidance, and installation scheduling throughout the logistics phase.
Yes. We encourage customers to send 50–100 kg of their actual production material to our Zhangjiagang factory for a trial run. During the trial, we record throughput data, particle size distribution analysis (sieve analysis) of each output fraction, power consumption, and any observations regarding material behavior (dusting, static, blinding tendency). The trial report is provided for your evaluation before order commitment. For customers unable to ship material samples, we can often conduct a video demonstration using a material simulant with similar particle size distribution and bulk density characteristics.
Ready to integrate a ZS Type Vibrating Screen into your production line? Follow these four simple steps to receive a tailored proposal from Chenxing Machinery:
Step 1 — Tell Us About Your Material: Specify your feedstock — material type (e.g., PVC granules, pharmaceutical powder, food additive), particle form (granules, flakes, powder), approximate bulk density, desired screening cut points, and any special requirements (hygiene classification, ATEX zoning, corrosion resistance).
Step 2 — Define Your Throughput and Model Preference: Indicate your target hourly throughput in kg/h and preferred model range (ZS350, ZS500, ZS800). Our engineers will recommend the optimal configuration or propose a customized solution if your requirements fall outside standard specifications.
Step 3 — Receive a Custom Proposal: Within 24 business hours, you will receive a detailed quotation including machine specifications, configuration options (mesh aperture, material grade, surface finish, motor voltage/frequency), shipping terms (FOB/CIF), and estimated delivery lead time.
Step 4 — Validate and Start Production: After order confirmation, we conduct a pre-delivery factory acceptance test. Upon shipment arrival, we provide remote or on-site commissioning support to bring your screening operation into full production — typically within 3–5 days after power-on.
| Channel | Detail |
|---|---|
| Phone WhatsApp WeChat | +86 159 5118 7228 |
| ceo@cxsljx.com | |
| Company | Zhangjiagang Chenxing Machinery Co., Ltd. |
| Website | www.chenxingmachinery.com |
We respond to all inquiries within one business day. For urgent inquiries, WhatsApp messages typically receive a reply within 2 hours during China business hours (UTC+8, 08:00–18:00).
