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Ash and Dust handling

Slide Gates and Valves

The Redler range of standard slide gates are of a pressed mild steel construction covering a size range shown on the dimensional chart. Square or rectangular openings can be catered for to any dimensions within these limits. Three types of standard slide gate are available:-

  • Light Duty (L): Fabricated from 3 mm pressings with 6 mm slide plate
  • General Duty (G):Fabricated from 5mm pressings with 8 mm slide plate
  • Bunker Duty (B): Fabricated from rolled steel sections with 15 mm slide plate

The slide plate for light and general duty units runs on nylon rollers; nylon tufted brush strips held in contact with the slide plate by resilient sponge cord seal the slide plate.

Bunker type slides for use under silos incorporate steel guides for the slide plate. Various modes of actuation are available including:

  • Hand Operated
  • Screw Operated
  • Rack and Pinion Operated
  • Electropneumatically Operated
  • Electrical Activator Operated

All types of slide can be supplied fitted with microswitches for slide plate open/closed indication and will have all internal wiring and piping supplied complete.

Flush fitting slides can be supplied for MoveMaster conveyors where required: e.g. certain food industry applications.

When slide gates are for use with MoveMaster conveying plant, the units can be positioned across or along the casing.

Slide Gates and Valves

Range

The simplest type available, slide plate operation is manual via a simple handle. There is no top cover on the slide frame.

 Slide Plate

Rack and Pinion Slide Gate

Of totally enclosed design, this type employs a rack pinion actuating mechanism operated by:

  • Manual Handwheel (Type RPH)
  • Manual Chainwheel (Type RPC)
  • Automatic Motorised (Type RPM)

Motorised units are particularly suitable for applications where an air supply is not available.

 Rack and Pinion Slide Gate

Screw Operated Slide Gate

An alternative to the rack and pinion type of slide, operated from one end. This type can also be applied to a sloping outlet and has a mechanical advantage over a hand operated type.

  • Manual Handwheel (Type SCH)
  • Manual Chainwheel (Type SCC)
  • Automatic Motorised (Type SCM)
 Screw Operated Slide Gate

Electropneumatic Slide Gates

The ideal choice for applications requiring automation. The air supply is controlled by a solenoid operated spring reset valve with R1/4" BSP ports for G and B units and R1/8" BSP for L units. All valves have manual override controls and interchangeable coils are available for voltages in the ranges 24 and 50 Volts DC and 24-440 Volts AC. Adjustable throttle valves mounted on the exhaust ports of the solenoid valve control the opening and closing speeds of the slide plate.

  • Single Solenoid (Type EPS) or
  • Double Solenoid (Type EPD) are available.

These slides may not be suitable for use beneath large silos. Please consult Stock Redler Limited for recommendations.

 Electropneumatic Slide Gates

Hydraulic Slide Gates

Features and Benefits

  • Versatile: Broad range of standard options ensures a slide is available to suit most requirements.
  • Reliable: All types give reliable long term service.
  • Rubust: Fabrication techniques and refined design mean minimal maintenance.
  • Totally Enclosed: All moving parts are totally enclosed which means safe, dust tight operation.
  • Clean: Special seals ensure dust is contained. Flush fitting slides available if required.
  • Cost Effective: Standard units ensures prices are competitive.
  • Controllable: Electro pneumatic units can be tuned for optimum slide plate speeds.
  • Flow Control: Manual units allow for slide plate to be fully open / closed or any position between.
  • Proven: Established throughout industry as a Redler Standard product.

Technical Specifications

  • Air cylinders used are to European CETOP RP 43P standards and BS 4862.
  • Air supply pipe diameter: 8 mm for G and B type. 6 mm for L type.
  • Client must provide a clean air supply with a pressure of 5-10 BAR via 8 mm outside diameter pipe to the connector mounted on the slide frame, for electropneumatic units.
  • Solenoid valve electrical ratings: Nominal rating 5W.
  • Operating power AC 10VA DC 5W. Holding power AC 8VA DC 5W. Temperature range –20°C + 60°C.
  • All solenoid valves have fully encapsulated coil assemblies, moisture proof electrical plug in connections and manual override controls. Enclosure protection to IP65.
  • Units with micro switches conform dimensionally with EN 50047 IP 65 enclosure. Rated operating current 6A at 230V AC. Operating temperature range –30°C + 85°C.
  • Where terminal boxes are necessary dust and waterproof units protected to IP65 IEC publication 144 are available.
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