ISOLATION BIN GATES AND SLIDING WORK PLATFORMS
Safe isolation of stored material in hoppers and bins in order to protect maintenance personnel from the risk of flowing or falling material is a key safety requirement in materials handling systems.
To avoid the need to fully empty or clean bins or hoppers when carrying out downstream maintenance, many sites are electing to install isolation gates which can be closed when maintenance is required, saving considerable downtime.
Bulk Handling Technologies can supply custom designed gates to suit the bin loads and stored material properties and can even assist with retrofitting isolation solutions to existing bins if required.
For personnel safety on large elevated chutes, Sliding Work Platforms are available which can be positively locked, providing a safe work platform and avoiding the need to install scaffold for maintenance access.
Isolation Gates/ Bulk Bin Slide Gates
Isolation gates prevent uncontrolled flow of material and when closed allow safe maintenance of downstream equipment. When designed to cater for 'first-fill' head loads, the isolation gate can allow bins to be filled while the gate is closed, reducing overall plant down time during maintenance activities.
Isolation gates can range in size from small 500mm square units, actuated by a single pneumatic cylinder, up to massive 10m long by 3m wide dual gates fitted with multiple high pressure hydraulic cylinders.
Isolation gates can be fitted beneath all bins and silos which store bulk material, ranging from free flowing grains or fine powders, up to hard lumps and highly abrasive materials such as iron ore.
Loading Clamshell Gates
Controlling the loading of road trailers or rail wagons from a large bin can be carried out using a large aperture clamshell gate. Loading clamshell gates have large discharge rates which allow for rapid, efficient filling. They work by initially opening to their maximum setting for 'fast-fill', before throttling back the material flow to a trickle for precision loading before finally closing. Clamshells can be supplied with pneumatic or hydraulic actuation depending on the head load from the material above.
Sliding Work Platforms
One particular variation of a conventional isolation gate is a Sliding Work Platform. In this application the 'gate' is used for safe access, providing a work platform for maintenance personnal to access wear liners, belt cleaners and other items requiring regular inspection and maintenance.
Without the requirement to open or close under high head load, sliding work platforms are often electrically actuated using linear actuators or rack-and-pinion drive. Lockable in the open and closed positions, Sliding Work Platforms avoid the time consuming and hazardous task of installing and removing scaffold for maintenance activities, reducing shut-down time.
Sliding Work Platforms can be designed to fit within elevated large conveyor head chutes or bin openings and the size can vary to suit the circumstances and layout restrictions. Designed to support the weight of personnel, equipment and parts, operation can be via manual handwheel, electric motors, pneumatic cylinders, or hydraulic cylinders all depending upon loads, required open / close speeds, and budget.
Hydraulic actuated gates can be supplied complete with custom designed hydraulic power units and local operating stations (electric or manual) to suit each clients specifications and preferences.
Our capabilities include:
Hydraulic Gate System - single and double gate
Pneumatic Slide Gate
Sliding Isolation Platform