A plastic granule centralized feeding system is the automatic conveying and distribution network that moves PE, PP, PVC and other plastic granules from the raw material area to every extruder, injection machine or pelletizing line through one closed vacuum pipeline. The Chenxing arrangement combines a raw material mixing station, a centralized pipe distribution system and a PLC control cabinet, with vacuum loaders, distribution valves and level sensors placed at each machine hopper. One central pump station can feed several production lines, and typical conveying distance falls in the 20-80 m range depending on pipe size and fan configuration, confirmed at enquiry.
The system is built from three parts that work as one loop:
Raw material mixing system: hoppers, dosing stations and optional blending stations that prepare granules before they enter the conveying line.
Pipe centralized distribution system: stainless or galvanized steel pipes, pneumatic distribution valves and machine-side hoppers that carry and split the material flow.
Centralized PLC control system: one control cabinet with recipe storage, level monitoring, missing-material alarms and automatic valve switching.
Shop floor value is direct. Operators no longer carry bags between the warehouse and each machine. Material stays inside a closed pipe, so dust stays inside the pipe too, and one grade of granule cannot be accidentally mixed with another. Several lines can draw from the same material area, and the PLC keeps the feeding sequence consistent shift after shift.
The system suits PE, PVC, PP and most plastic granule or particle production lines. Powder material needs a separate conveying design, and the Chenxing automatic compounding system covers that side of the workshop. For a wider view of how feeding, mixing and extrusion are combined, see the compounding system solution page.
Key selling points:
Closed vacuum conveying reduces manual handling and cross-contamination between grades.
One central pump station serves multiple machines, so floor space is saved.
PLC recipes keep the granule mix the same every run.
Machine count can be extended later without rebuilding the control logic.
A typical layout starts with the raw material area, where granules sit in silos, bags or big bags next to the mixing station. From there a vacuum loader pulls material into the pipe network. Pneumatic distribution valves sit at branch points and direct the flow to the correct machine. Each machine has a hopper with a level sensor; when the sensor reads low, the PLC asks the pump station for more material, the valve switches, and the loader refills that hopper before moving to the next one. The central PLC cabinet monitors the whole loop and logs alarms.
The table below lists typical industry reference values. Every figure is confirmed at enquiry because each layout is sized from the actual workshop.
| Item | Typical Industry Reference |
|---|---|
| Conveying distance | 20-80 m depending on pipe size and fan configuration, confirmed at enquiry |
| Conveying pipe | Stainless steel or galvanized steel pipe, confirmed at enquiry |
| Distribution valve | Pneumatic switching valve, confirmed at enquiry |
| Machine-side hopper capacity | 50-200 L, confirmed at enquiry |
| Central pump station | Vacuum pump or roots blower station, confirmed at enquiry |
| Control | PLC with touch screen, recipe storage, missing-material alarm, automatic switching, confirmed at enquiry |
| Power supply | 380V 50Hz 3 phase, customizable, confirmed at enquiry |
Sizing starts with the number of machines and the granule consumption per line in kg/h. Pipe diameter, valve count and pump station power follow from that number, plus the distance between the material area and the farthest machine. The same questions come up on every enquiry, so Chenxing prepares a layout drawing and a component list before quoting. Nothing is fixed until the order drawing is confirmed.
Related equipment is covered on the auxiliary machines page, and the plastic pelletizing line page shows the production side that this feeding system serves.
| Application | What The System Does |
|---|---|
| PE granule production | Feeds pellets from the material area to extruder hoppers without manual lifting |
| PVC pelletizing | Distributes PVC granules to pelletizing line machines in sequence |
| PP compounding feeding | Supplies PP granules and masterbatch to compounding machines by recipe |
| Injection molding shops | Delivers granules to each molding machine hopper from one central point |
| Masterbatch lines | Keeps base resin and color masterbatch feeding consistent |
| Multi-line extrusion workshops | One pump station serves several extrusion lines at different distances |
A single system is often installed in workshops that run several pipe extrusion line solutions side by side. It is equally common in HDPE pipe extrusion line solution plants and PVC pipe extrusion line solution shops, where the granules for different pipe grades must never be mixed. PPR pipe extrusion line solution plants use the same feeding logic, and profile shops running a profile extrusion line can connect several lines to one feeding loop as well. The same approach is used on board and sheet extrusion lines and on 3D filament extrusion lines, where consistent pellet feeding matters for stable output.
For plants that process recycled material, the feeding system pairs naturally with a plastic recycling line solution, a two stage recycling machine or a PE PP film recycling washing line, so regrind and virgin pellets are both delivered through clean, separate lines.
What can be customized:
Machine count and each hopper capacity.
Conveying distance and pipe diameter.
Central pump station power and number of pumps.
Number of distribution valves.
Number of mixing or dosing stations.
Whether a dehumidifying dryer is added for moisture-sensitive materials.
PLC recipe functions and alarm options.
Workshop layout and pipe routing.
What stays fixed:
Vacuum conveying principle, because granules move reliably in negative pressure without mechanical augers inside the pipe.
PLC centralized control architecture, so all machines are supervised from one cabinet.
The three-part structure of mixing, pipe distribution and centralized control, because that is the design the system is built on.
The feeding loop can be extended to a continuous powder suction machine or a powder suction machine when powder grades are added to the workshop, and a crushed material suction machine can bring regrind back into the same feeding loop. Blending duties are handled by the raw material mixing station.
Chenxing Machinery has held ISO9001 certification and CE compliance for its plastic machinery range since the company was founded in 2002, with more than 20 years of extrusion and auxiliary equipment experience. Every feeding system goes through factory checks before shipment: pipe sealing test, valve switching test and level sensor calibration are all logged. The control cabinet is powered up and the PLC program is run through a dry test with the machine-side hoppers connected.
Each system ships with an inspection report and a certificate of conformity. A 1-year warranty covers the equipment. Installation and commissioning are available, and Chenxing engineers or partners can train the local operators on recipe setting and alarm handling. Global installation service can be arranged on request. Company background is on the about Chenxing Machinery page, and the full product catalog lists the rest of the extrusion and auxiliary range.
MOQ: 1 set.
Lead time: confirmed on order.
Packing: export wooden case, pipes and control cabinet packed separately and fixed inside the case.
Trade terms: FOB, EXW, CFR, CIF, CIP.
Payment: T/T or L/C.
Before shipment the pipe network is sealed at both ends and the hoppers are wrapped. A packing list and shipping marks are attached to each case. For project planning beyond a single machine, Chenxing also works on advanced material processing technology EPC projects, and the machinery solutions page shows typical workshop arrangements.
It is an automatic conveying and distribution network that moves PE, PP, PVC and other plastic granules from the raw material area to multiple machines through one closed vacuum pipeline, supervised by a central PLC.
PE, PP, PVC granules, masterbatch and most plastic particle grades. Powder materials need a separate conveying design, confirmed at enquiry.
Extruders, injection machines and pelletizing lines that take granules into a hopper. Machine count is sized per workshop, confirmed at enquiry.
Vacuum negative pressure pulls granules from the raw material area into the pipe. Distribution valves switch to route the flow, and hopper level sensors tell the PLC when to refill each machine.
Yes, with an optional blending station. Recipes are stored in the PLC so the granule ratio stays the same every run, confirmed at enquiry.
One central pump station can serve several lines. The exact number depends on hopper capacity, conveying distance and consumption per line, confirmed at enquiry.
Typical industry reference is 20-80 m depending on pipe size and fan configuration, confirmed at enquiry.
Yes. Material travels in a closed pipe under vacuum, so dust stays inside the pipe and the workshop floor stays clean.
Most layouts use one central vacuum pump or roots blower station that serves all machines. Small layouts can use machine-side loaders instead, confirmed at enquiry.
MOQ is 1 set. Lead time is confirmed on order after the layout drawing is approved.
More answers on machinery selection are available on the FAQ list, and the downloads page carries catalogs and drawings for reference. If you need to compare machine families, the plastic extruder range page and the recycling machine series are good starting points.
To get a layout drawing and a quotation, please provide:
Number of machines and granule consumption per line in kg/h.
Raw material types and forms.
Conveying distance and workshop layout.
Voltage, frequency and phase.
Whether mixing and dosing is required.
Whether a dehumidifying dryer is required.
Destination port and trade terms.
Nicole | Email: ceo@cxsljx.com | Tel WhatsApp WeChat: +86 159 5118 7228
For a quick look at the wider range, the pipe extrusion line page, the profile extrusion solution page and the washing line machines page cover the machines that run beside a centralized feeding system. You can also reach the team through the contact page or start from the home page.