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Product Description
The PVC spiral suction hose extrusion line is a continuous extrusion system that produces spiral steel wire reinforced PVC suction hose, commonly called helix suction hose or vacuum duty hose. A steel wire skeleton is wound into the hose wall while the melt is still soft, and that spiral gives the finished tube crush resistance and the ability to hold negative pressure without collapsing. Typical production runs cover hose with an inner diameter of about 25 to 200 mm (typical industry reference, confirmed at enquiry).
A suction hose works differently from a plain water hose. Water hoses push; suction hoses pull, so the wall has to stand up against vacuum. The wire spiral takes that load, and the PVC body keeps the hose flexible and airtight. Customers who buy this line are usually making hose for dust collectors, pneumatic conveying lines, workshop extraction and truck vacuum loading, where a soft hose that flattens under vacuum is useless.
The line is built as a coordinated set of stations, each with a specific job:
Material feeding and compounding: PVC dry blend is prepared in a mixing unit selection, then fed to the extruder through automatic compounding systems or powder suction machines.
Extrusion: a single screw extruder (or conical twin screw version) with a hardened screw melts and plasticizes the compound to a uniform melt.
Wire embedding die head: the spiral suction hose die head guides the steel wire into the hose wall as the melt exits, so the helix is formed in one pass.
Sizing and cooling: the hose passes through a vacuum calibration tank or spray cooling trough to set the diameter and wall thickness.
Haul-off and take-up: a caterpillar haul-off pulls the hose at constant speed, then an automatic coiler winds it into coils or a cutter makes fixed lengths.
Control: a PLC control cabinet runs the whole line and keeps screw speed, haul-off speed and wire feed timing in step.
PVC compound feeds into the extruder screw, melts and plasticizes. At the die head the spiral steel wire is guided into the hose wall as the melt exits. The hose passes through sizing and cooling, is hauled off at constant speed, then coiled or cut to length. Wall smoothness and helix pitch are controlled by screw speed, haul-off speed and wire feed timing.
That sequence sounds simple, but each step has to stay in balance. If the screw speed rises and the haul-off speed stays put, the wall gets thicker. If the wire feed timing drifts, the helix pitch changes and the hose loses its crush resistance. The PLC control cabinet watches those three values together, which is why a spiral suction hose line is usually quoted as a complete set rather than as separate machines.
The source listing for this machine class contains no published parameter table, so the figures below are typical industry reference values for a PVC spiral suction hose extrusion line of this size. Every figure must be confirmed at enquiry against the exact hose program you plan to run.
| Item | Value |
|---|---|
| Product | PVC spiral suction hose, spiral steel wire reinforced, helix suction hose |
| Hose inner diameter range | About 25-200 mm (typical industry reference, confirmed at enquiry) |
| Line modules | Single screw extruder or conical twin screw with hardened screw; spiral suction hose die head with automatic steel wire feed; vacuum calibration or spray cooling section; caterpillar haul-off; automatic coiler or fixed-length cutter; PLC control cabinet (typical industry reference, confirmed at enquiry) |
| Wire reinforcement | Spiral galvanized steel wire or stainless steel wire, wire diameter typically 1.0-3.0 mm, tension adjustable (typical industry reference, confirmed at enquiry) |
| Throughput | About 80-150 kg/h depending on hose size and wall thickness (typical industry reference, confirmed at enquiry) |
| Wall thickness | Typically 1.0-5.0 mm (typical industry reference, confirmed at enquiry) |
| Installed power | About 40-90 kW depending on extruder size (typical industry reference, confirmed at enquiry) |
| Power supply | 380 V, 50 Hz, 3 phase standard; other voltages on request |
| Cooling | Water trough / spray cooling; vacuum sizing as needed |
A practical production run on this line follows a fixed routine:
Dry the compound: PVC dry blend must be dry before extrusion; moisture shows up as bubbles and a rough bore in a thin hose wall.
Check the wire coil: confirm wire coil tension and wire diameter before start-up; a loose coil causes an uneven helix.
Set barrel temperature zones and screw speed: the barrel zones are set for the PVC formulation, and screw speed is matched to the required output.
Start extrusion: the melt is purged until it runs clean, then the hose is threaded into the die with the wire feed engaged.
Thread into sizing and haul-off: the hose enters the vacuum calibration tank or spray cooling trough, then the caterpillar haul-off takes over the pulling.
Adjust helix pitch: wire feed timing is fine-tuned against haul-off speed until the spiral pitch matches the drawing.
Coil or cut: the automatic coiler takes up continuous hose, or the cutter makes fixed lengths.
Sample check: wall thickness is measured with a caliper at several points around the circumference, and a short length is checked for vacuum collapse resistance.
The wider extrusion range around this product is covered under pipe extrusion equipment, pipe system planning, PVC pipe extrusion planning, HDPE pipe production planning and HDPE pipe machinery. For hose with a smooth reinforced body rather than a wire helix, see fiber reinforced soft hose lines.
This line makes hose for jobs that pull air, dust or granules, not jobs that simply carry water. The main applications are:
| Application field | Typical duty |
|---|---|
| Industrial vacuum cleaners and central dust extraction | Flexible pickup hose that keeps its bore under negative pressure |
| Pneumatic conveying of granules and pellets | Transfer hose for plastic pellets, granules and powders |
| Workshop fume and air extraction | Light, flexible ducting that reaches machines and benches |
| Ventilation ducts | Semi-flexible ducting for low pressure air movement |
| Agricultural and garden suction hoses | Water and slurry pickup in farm and garden equipment |
| Truck and bus vacuum loading | Bulk loading and unloading hose that must not collapse under strong vacuum |
A spiral suction hose line complements a plant that already runs drainage pipe machines or corrugated hose lines. The same factory can cover smooth fiber hose, wire-reinforced suction hose and single wall corrugated pipe machinery, double wall corrugated pipe machinery and corrugated pipe line planning. Typical end users are collected in the application portfolio.
Workshop layout. The line runs as one compact set: compounding and feeding, extruder, wire embedding die head, sizing and cooling, haul-off, coiler or cutter, and the control cabinet. It needs a levelled floor, a 380 V three phase 50 Hz supply sized for the installed power, and cooling water for the trough. Granule and powder transfer around the line can be handled by continuous powder conveyors and material conveying machinery, and plant-specific layouts by custom pipe machinery projects.
Hose diameter range: die and calibration tooling are made for the ID range you sell; 25-200 mm is the typical industry reference envelope, and the exact range is confirmed at enquiry
Wall thickness: 1.0-5.0 mm typical industry reference; thinner walls run faster, thicker walls need slower haul-off and more cooling
Wire material and diameter: galvanized steel wire or stainless steel wire, typically 1.0-3.0 mm, selected for the application and the market
Coiler vs cutter: continuous coil take-up or fixed-length cutting, or both on the same line
Extruder configuration: single screw or conical twin screw version matched to the output target; compare screw extruder options
Power supply: 380 V 50 Hz 3 phase standard; 220 V, 60 Hz or other configurations built on request
Voltage and electrical component make: confirmed at order stage
Spiral wire embedding principle: the wire is wound into the wall at the die head in one continuous pass; that is the core of a suction hose line
Extrusion and sizing sequence: melt, embed wire, size, cool, haul off; the order cannot be changed without changing the product
PLC control architecture: screw speed, haul-off speed and wire feed timing are always controlled together
Related equipment that is often quoted with the line: supporting auxiliary machinery, pellet production lines, profile extrusion machines, profile line planning, sheet extrusion machines, marble panel lines, strip profile machinery, light guide cover machines, ABS pipe production lines and recycling system planning.
Quality on this machine class is decided in the workshop, not on the data sheet:
Extruder screw and hardening: the screw and barrel are hardened for continuous running with filled PVC compound; wear shows up first as uneven wall thickness, so this is a long-term quality point
Die head alignment: the wire embedding die head is aligned to the extruder centreline before every trial; a misaligned die produces a one-sided wall
Wire feed tension calibration: wire tension is set and checked against the helix pitch drawing; too tight makes a stiff hose, too loose makes a weak one
Sizing vacuum setting: vacuum level in the calibration tank is tuned for the hose diameter; low vacuum gives an oval bore, high vacuum can thin the wall
Trial run with your profile: a trial run with the actual suction hose profile can be arranged before shipment, so wall thickness, helix pitch and vacuum collapse resistance are seen before the machine leaves the factory
Chenxing Machinery has built extrusion lines since 2002 and runs a quality management system certified to ISO 9001, with CE marking on the machine range. Company background is on the Chenxing production background page, technical files are under line documentation and workshop updates on the factory news page. For a plant planned from raw material storage to finished hose, we can also support factory planning support and EPC engineering support.
Packing: the line is split into shipping units, fixed on wooden pallets or in wooden crates with PE film protection, suitable for sea freight
Lead time: confirmed at enquiry; a standard line is built to order, and the schedule depends on the hose diameter range and the die set
Documentation: CE and ISO 9001 documentation, machine manual, electrical drawings and a spare parts list are supplied with the line
Shipping: sea freight from China; the loading plan is prepared and the container is inspected before closing
Installation and training: our engineers guide installation and train your operators; a trial run with your hose profile can be arranged before dispatch
Yes. The spiral steel wire embedded in the wall is what stops the hose from collapsing under negative pressure. The wire takes the crushing load, and the PVC body keeps the hose airtight. That construction is the standard answer for vacuum duty hose in dust extraction and pneumatic conveying.
Typical industry reference for this machine class is about 25-200 mm inner diameter. The die and calibration tooling are made for the range you actually sell, so the exact minimum and maximum are confirmed at enquiry.
Fiber reinforced hose has a braided or wound fiber layer for pressure duty and a smoother bore. Spiral suction hose carries a steel wire helix that resists crushing and vacuum collapse. A plant often runs both: fiber hose for water and pressure, spiral suction hose for vacuum and pickup.
Galvanized steel wire is the standard choice, and stainless steel wire is available for markets that need better corrosion resistance or food-grade handling. Wire diameter is typically 1.0-3.0 mm (typical industry reference, confirmed at enquiry), and wire tension is adjustable on the line.
About 80-150 kg/h depending on hose size and wall thickness (typical industry reference, confirmed at enquiry). Small diameters with thin walls run faster; large diameters and thick walls pull the figure down.
Helix pitch is set by the balance between haul-off speed and wire feed timing. The PLC keeps those two values in step, and the operator fine-tunes the pitch during the production run against the drawing. Screw speed controls the wall thickness at the same time.
The standard is 380 V, 50 Hz, 3 phase. Other voltages and frequencies can be built on request. Installed power is typically about 40-90 kW depending on extruder size (typical industry reference, confirmed at enquiry), so the plant electrical supply should be sized for that.
The hose inner diameter range, wall thickness, wire type, the application (dust extraction, conveying, truck loading and so on), and the plant voltage. With those five points we can confirm the extruder size, die set, cooling section and take-up format in a written quotation.
Lead time is confirmed at enquiry, since the die set and tooling are made for your hose program. Packing is wooden pallet or wooden crate with PE film protection, split into shipping units and loaded with a verified container plan.
Installation guidance, operator training and a trial run with your hose profile can be arranged before shipment. CE and ISO 9001 documentation, the machine manual, electrical drawings and a spare parts list are supplied with the line. For general questions, see the frequently asked machinery questions.
Send us the following so the first quotation is close to final:
Hose specification: inner diameter range, wall thickness, and the helix pitch or wire pitch you need
Wire type: galvanized steel or stainless steel, and the wire diameter you prefer
Application: dust extraction, pneumatic conveying, workshop extraction, ventilation, agriculture or truck loading
Output target: kilograms per hour or metres per day
Take-up format: coils, fixed lengths, or both
Plant voltage: 380 V 50 Hz 3 phase or your own supply
Plant conditions: floor area and cooling water availability
Commercial terms: Incoterm, destination port, payment method
What you get back: a written quotation for the complete line: extruder, wire embedding die head with the die set for your ID range, sizing and cooling section, caterpillar haul-off, coiler or cutter, PLC control cabinet and standard spare parts: together with the confirmed hose program, the lead time, the packing plan and the trade terms. The complete product range is on main machine catalog and the expanded machinery catalog.
If you would like to see how this line is presented in more detail first, view more machine details.
Nicole: Email: ceo@cxsljx.com | Tel WeChat WhatsApp: +86 159 5118 7228
Send your hose ID range, wire type and application, and we will reply within 24 hours. Or use the PVC suction hose line inquiry page directly.
