Abstract

An integrated grain drying/storage/regulating bin with a built-in bellows and an externally disposed compartment comprises an integrated bin body, a grain distributing device, an external compartment outside the integrated bin body, internal bellows inside the integrated bin body, a heating device, a refrigerating device, a humidifying device, an air flow distributing device, a centrifugal fan, and an air flow control valve. The top of the integrated bin body is provided with a grain feed port. The grain distributing device is disposed inside the bottom of the grain feed port. The middle portion of the integrated bin body is provided with several levels of the internal bellows. The external compartment is provided at the periphery of the integrated bin body. The heating device, the refrigerating device, and the humidifying device are disposed outside the integrated bin body, and are connected with the air flow distributing device through a duct. The merits of the present invention are: (1) being able to prevent the occurrence of moisture condensation; (2) facilitating production cost reductions; (3) uniformly heating and drying the grains in the bin; (4) being capable of preventing the filter for the grain layers in the bin from blockage or short circuit caused by spontaneous grain grading; (5) being able to implement low temperature or quasi-low temperature storage; and (6) being capable of enhancing grain toughness, lowering breakage rate, and increasing production yield and product quality.

IPC Classes  ?

• A01F 25/14 - Containers specially adapted for storing
• A01F 25/22 - Ventilating arrangements
• A23B 9/08 - DryingSubsequent reconstitution

Abstract

A negative-pressure continuous grain dryer with a built-in heating device (3) comprises a dryer bin (2), heating devices (3), and a centrifugal fan (9). Several levels of the heating devices (3) are disposed from top to bottom in the dryer bin (2). A grain mixing device (5) is provided below the heating device (3) at each level. Outside the bin, an auxiliary heating device (6) and a natural air inlet (7) are provided in correspondence with the heating device (3) at each level. The auxiliary heating device (6) and the natural air inlet (7) communicate with the grains and the respective heating device (3) in the dryer bin (2) through a perforated baffle plate (4). The centrifugal fan (9) communicates with each of moisture exhaust vents (11) at each level through an air duct (10). The dryer can implement drying of grains in an "intermittent" mode, a "gradient" mode, a "balanced" mode, a "uniform" mode, and a "continuous" mode. There is a large range of applicable heat source carriers for the heating devices (3).

IPC Classes  ?

• F26B 17/16 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials passing down a heated surface
• F26B 23/10 - Heating arrangements using tubes or passages containing heated fluids
• F26B 25/02 - Applications of driving mechanisms, not covered by another subclass
• A23B 9/08 - DryingSubsequent reconstitution