Skip to content
Air Lock

Series HKAL

Air Lock

The air lock is a rotary valve under cyclones, filters and hoppers that discharges product while maintaining the air seal.

Model
5 models
Series
HKAL

On aspiration lines the space under cyclones and filters is held under vacuum. The air lock discharges the collected product downwards while preventing outside air from entering that space, which would otherwise reduce the separation efficiency of the cyclone.

The rotor turns slowly and continuously; the pockets fill with product and empty at the bottom. The close clearance between rotor and housing provides the seal without any moving gasket.

Dimensions and weights are given in the model table. The side cover opens so the rotor can be removed for cleaning and maintenance.

Key features

  • Air seal for cyclones and filters under vacuum
  • Clearance sealing with no moving gasket
  • Low-speed continuous operation
  • Rotor removal through the side cover
  • Compact body with standard flange connections

Applications

  • Under cyclones and filters
  • Hopper and silo discharge
  • Aspiration and dust collection systems
Animated schematic Paused

How it works

Working principle

Conveying moves grain and milled products between every stage of the plant with minimal energy and no product damage.

  1. 1Product enters the boot of the elevator from a conveyor or hopper.
  2. 2Buckets on an endless belt lift it up the loaded leg and over the head pulley.
  3. 3Centrifugal force throws the product into the discharge spout, from where screw or chain conveyors and pneumatic lines carry it on.

HKAL

Technical specifications

  • Weight

    40–135kg

    across 5 models

  • HKAL 200

    Dimensions (mm)

    A (mm)
    490
    B (mm)
    250
    C (mm)
    295
    D (mm)
    220
    G (mm)
    220
    Dimensions (mm) (mm)
    132

    Weight

    Weight (kg)
    40
  • HKAL 220

    Dimensions (mm)

    A (mm)
    490
    B (mm)
    250
    C (mm)
    320
    D (mm)
    220
    G (mm)
    220
    Dimensions (mm) (mm)
    150

    Weight

    Weight (kg)
    55
  • HKAL 240

    Dimensions (mm)

    A (mm)
    490
    B (mm)
    250
    C (mm)
    320
    D (mm)
    220
    G (mm)
    220
    Dimensions (mm) (mm)
    150

    Weight

    Weight (kg)
    65
  • HKAL 300

    Dimensions (mm)

    A (mm)
    515
    B (mm)
    275
    C (mm)
    342
    D (mm)
    245
    G (mm)
    220
    Dimensions (mm) (mm)
    180

    Weight

    Weight (kg)
    80
  • HKAL 400

    Dimensions (mm)

    A (mm)
    590
    B (mm)
    390
    C (mm)
    480
    D (mm)
    340
    G (mm)
    220
    Dimensions (mm) (mm)
    200

    Weight

    Weight (kg)
    135