Overview
ISO 1815:1975 - "Continuous mechanical handling equipment for loose bulk materials - Vibrating feeders and conveyors with tubular trough" specifies the basic geometrical and physical characteristics for vibrating feeders and tubular-trough conveyors used with loose bulk materials. The standard covers the two principal configurations illustrated in the document (tubular troughs with closed ends and with one closed end) and provides guidance to ensure consistent specification, manufacture and selection of these types of continuous handling equipment.
Key topics and technical requirements
- Scope and field of application: Defines the types of vibrating feeders and tubular-trough conveyors covered and the drawings used to describe the configurations.
- Geometrical specifications: Dimensions are given in millimetres. Nominal tube diameters are referenced to ISO preferred-number series and heights for inlets and discharges are specified. The standard permits use of established preferred-number series for sizing components.
- Physical specifications - vibrations: Frequencies and corresponding oscillation distances are specified for selection based on material flow behaviour, bulk-material characteristics, trough length and equipment type. The vibration data are presented as selectable values (note: the published vibration table is tied to a mains frequency reference).
- Construction considerations: Addresses allowable features such as multiple inlet and discharge points for vibrating conveyors and other construction aspects necessary for practical application.
- Normative references: Uses ISO preferred-number series (ISO 3) for sizing guidance.
Practical applications and who uses it
ISO 1815:1975 is intended for use by:
- Manufacturers and designers of vibrating feeders and tubular-trough conveyors to define baseline geometry, vibration parameters and construction options.
- Plant engineers and procurement/specification teams who need standard, repeatable characteristics for equipment selection and tender documents.
- Installation, maintenance and testing personnel who require reference parameters for vibration settings and component interchangeability.
- Standards and conformity bodies that assess equipment compliance with internationally recognized geometry and vibration criteria.
Typical applications include continuous conveying and metering of loose bulk materials where enclosed tubular trough designs are required to control spillage, dust or contamination.
Related standards
- ISO 3: Preferred numbers - Series of preferred numbers (referenced for nominal diameters and sizing).
(ISO 1815:1975 originates from an earlier ISO Recommendation; it provides a concise technical basis for vibrating tubular trough conveyors.)
Keywords: ISO 1815:1975, vibrating feeders, tubular trough conveyors, continuous mechanical handling equipment, loose bulk materials, geometrical specifications, vibration frequencies, oscillation distances, ISO preferred numbers.