Lingward Crop Drying and Storage Products
For over 25 years the LINGWARD range has offered a flexible alternative of crop drying and storage product.
The comprehensive LINGWARD range of crop drying and storage products includes main air ducts and meshed or open slot drying floors, in either hardwood or softwood options.
These allow effective bulk grain drying and potato storage, and can incorporate individually designed letterbox ducts for the more sensitive drying and storage of onion and flower bulbs in 1 to 3 tonne boxes.
A range of associated items for the grain stores has also been developed, including self shedding walling, portable "L" & "T" dividing walling, post & panel dividing walling which can also be used as doorway barriers. Below floor grain and potato laterals, above floor potato laterals and potato boxes are also design options.
For more details on our LINGWARD product features please click on the appropriate link below or view our latest leaflet.
The duct is assembled on site using angular ring shank nails to secure the ply to the frames, and the frames being fixed to the concrete floor with welded RSA anchor brackets and anchor bolts.
The height and width of the ducts are variable to accommodate different grain depths and airflows with two basic formats available; up to 3.0m (10'0") deep and up to 3.66m (12'0") deep.
For bulk potato and onion storage the ducts can be up to 5.5m (18'0") to accommodate the high air flow required in onion drying, although crop depths would normally be limited to 4.3m (14'0").
Fans can be mounted on the end or top of the ducts depending on the general layout of the building and the crop ventilation requirements.
The drying floors comprise hardwood or softwood top boards with treated softwood bearers and are assembled on site. The standard board length is 1220mm but they can be made to match the existing main air duct outlet centres where existing above floor lateral systems are being converted. The use of short boards and on-site installation also allows the floor to be fitted to follow existing concrete levels in older stores.
The main bearers are 70mm wide incorporating the "Lingward Ply Strip Air Control" with the intermediate bearers 45mm wide machined 1mm smaller in depth than the main bearers to prevent the boards rocking on the end.
Two types of floor are available; the standard mesh type for cereal crops which can also be used for potatoes, onions and bulbs, and the open slot type for root crops only.
Letterbox Ducts and Suction Walls
Designed to meet the requirements of the particular root crop and site, these are generally used for potato, onion and flower bulbs incorporating controlled ventilation for drying, cooling and refrigeration.
The frames, constructed from hardwood, are spaced to suit the clients box size and layout and can incorporate an internal walkway to give access to the air control doors on the outlets. Recirculation chambers for refrigerated stores are positioned on top of the duct incorporating the recirculation fans and evaporation coils.
Where the main air duct is located at the side of a building an "F" frame can be used to allow the side cladding to be part of the duct.
Fixing of studding and cladding to steel frames built into the building structure is also undertaken for both main air ducts and side retaining walls.
A range of self-shedding walling suitable for converting buildings into bulk stores where there is an existing concrete floor and weather proof non loading bearing external walls.
The walling is positioned directly on and anchored to the existing concrete and is available in heights from 1.8m to 3.6m.
'L' and 'T' Walling
Portable retaining and dividing walling for flexible and temporary storage.
Supplied in 1.22m wide sections and heights of 2.44m, 3.05m and 3.66m. Constructed from softwood studding with plywood cladding and steel tie bars.
Post & Panel Walling and Doorway Barriers
A combination of steel posts set permanently into the concrete floor or into socket boxes for easy removal.
Timber panels clad both sides are positioned between the post flanges for grain dividing or outside the flange with single side cladding for retaining.
The panels are constructed from softwood timber studding with ply cladding and are normally supplied in heights of 610mm and 1220mm, with the lengths to suit the specific application.
For doorway barriers a section of easily removed louvered timbers can be incorporated into the system or grain release slides utilised in the panels.
Photo shows Grain Drying Laterals to replace existing potato open slot timbers.