A roof vent system for a grain storage device is disclosed. A roof vent including a lid is operatively connected to the roof panel adjacent the opening. The lid is configured to move between an open position and a closed position. A bias member configured to apply an upward bias force to the lid to automatically move the lid to the open position. A control lever that is movable between an upper position and a lower position. The control lever is operably connected to the lid by a pull. When control lever is moved to the lower position with a force greater than the bias force of the bias member, the lid is moved to the closed position. A sealing member attached to the lid is configured to provide a seal between the lid and the roof panel when the lid is moved to the closed position.

Potentially off-grid grain conditioners that can be operably connected to an aeration grain bin or silo to blow heated air through the crop to dry the crop or to blow ambient temperature air through the crop to cool it are disclosed. A fan is powered by a motor that may be mounted inside the air stream to allow the heat from the motor to be collected and forced into the airstream that is blown into the grain bin. The engine exhaust may be routed through an air exchanger to remove heat from the exhaust and direct heat into the grain bin, or the exhaust may be put into the atmosphere without capturing any of the heat, which allows the fan to operate in a cooling mode. The motor may be mounted inline or mounted to the side for a centrifugal aeration fan.

Potentially off-grid grain conditioners that can be operably connected to an aeration grain bin or silo to blow heated air through the crop to dry the crop or to blow ambient temperature air through the crop to cool it are disclosed. A fan is powered by a motor that may be mounted inside the air stream to allow the heat from the motor to be collected and forced into the airstream that is blown into the grain bin. The engine exhaust may be routed through an air exchanger to remove heat from the exhaust and direct heat into the grain bin, or the exhaust may be put into the atmosphere without capturing any of the heat, which allows the fan to operate in a cooling mode. The motor may be mounted inline or mounted to the side for a centrifugal aeration fan.

Embodiments of systems and approaches for managing post-harvest crop quality and pests are described. Such a system may include a plurality of edge devices each comprising sensor components and collectively forming a mesh network, for measuring the local physical environment within stored crops and, for example, transmitting the measurements to a service from within the crop storage area. In certain embodiments, such a system may be used to manage post-harvest crops and storage areas-for example, approaches are described for determining fumigation treatment duration, determining phosphine dosage, determining heat treatment duration, and determining safe storage time for crops.

Embodiments of systems and approaches for managing post-harvest crop quality and pests are described. Such a system may include a plurality of edge devices each comprising sensor components and collectively forming a mesh network, for measuring the local physical environment within stored crops and, for example, transmitting the measurements to a service from within the crop storage area. In certain embodiments, such a system may be used to manage post-harvest crops and storage areas-for example, approaches are described for determining fumigation treatment duration, determining phosphine dosage, determining heat treatment duration, and determining safe storage time for crops.

A clamping apparatus for clamping a sheet to a supporting structure of an agricultural storage apparatus. The clamping apparatus includes a first clamping section and at least one second clamping section and is attached to a wall of the supporting structure. The, or each, second clamping section includes a lever section and a catch section pivotably attached to the lever section. In use, a section of the sheet is clamped between the first clamping section and the catch section of the, or each, second clamping section thereby securing the sheet to the supporting structure.

A plug for an air vent which fits into the top aperture of the air vent prevents cement flowing into the vent when a concrete floor is laid. The vent has a peripheral protrusion and a top flange. The plug protrusion snap fits into a concave groove in the top of the vent aperture. The flange extends upward an outward from the vent top so the laid concrete floor has a slot communicating with the vent and the vent top is installed below the floor and thus cannot be easily damaged by storing and removal of produce.

A grain storage bin includes a cylindrical wall formed by a plurality of panels arranged in rows with a bottom edge of a first row bolted to a top edge of a second lower row. At each joint the bottom edge of the first upper row is overlapped with and outside of the outer surface of top edge of the second lower row and the bottom edge is fastened to the top edge by bolts carrying spacers as to define a first channel along the joint for passage of air. A cover strip overlies the channel and extends from an upper edge of the strip at the inner surface of the first panel above the channel to a lower edge of the strip which is fastened to the top edge so as to define a second channel so that air can pass between the interior and the exterior through the first and second channels while the particulate material is prevented from escaping through the first channel by the cover strip.

A grain storage bin includes a cylindrical wall formed by a plurality of panels arranged in rows with a bottom edge of a first row bolted to a top edge of a second lower row. At each joint the bottom edge of the first upper row is overlapped with and outside of the outer surface of top edge of the second lower row and the bottom edge is fastened to the top edge by bolts carrying spacers as to define a first channel along the joint for passage of air. A cover strip overlies the channel and extends from an upper edge of the strip at the inner surface of the first panel above the channel to a lower edge of the strip which is fastened to the top edge so as to define a second channel so that air can pass between the interior and the exterior through the first and second channels while the particulate material is prevented from escaping through the first channel by the cover strip.

An agricultural storage system including an agricultural storage bin for storing agricultural products therein. At least a mixed air flow fan is connected to the agricultural storage bin for generating an air flow and air pressure and providing the same to the agricultural storage bin.