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Rotary dehydrator-granulator

阅读:873发布:2022-01-20

专利汇可以提供Rotary dehydrator-granulator专利检索,专利查询,专利分析的服务。并且A rotary dehydrator-granulator is provided for receiving viscid, high moisture content material such as middlings, bran or the like for processing into a dried granular form suitable for livestock feed. The material is conveyed through an inlet and interiorly along an elongated rotating drum by an auger in an open trough which discharges the material at an end opposite the inlet for subsequent tumbling by the drum. A suction fan draws the material, along with hot air emanating from a hot gas source, back toward a perforated screen outlet at the same end of the drum as the inlet. As the material is being tumbled, a portion of the semidried material is deposited in the open auger trough and mixed with moist material. By controlling the temperature of the hot air a predetermined amount of moisture may be removed from the thoroughly mixed material by the time it reaches the outlet, thereby lessening the adhesive quality of the material such that it separates into relatively small, substantially uniform granules of reduced moisture content which drop out of the drum through the outlet. That material which has not been sufficiently dried and formed into granules of a size to permit their exit through the outlet continue to tumble until their size becomes small enough to allow them to drop through the outlet or, in the case of overdrying, the fan draws the material past the outlet and into a dust collector from which the material is returned to the drum for remixing with moist material.,下面是Rotary dehydrator-granulator专利的具体信息内容。

1. A method of dehydrating and granulating moist materials including the steps of: tumbling material within a rotating drum while subjecting the material to a current of heated air; adding new moist material to the drum by conveying the same through the drum from one end of the latter toward the opposite end thereof without subjecting the newly added material to said tumbling action while it is being conveyed; collecting partially dehydrated and granulated material within the newly added material throughout the full length of conveyance of the latter; mixing partially dehydrated and granulated material with that newly added simultaneously with said collection and conveyance over the full length of such conveyance; discharging the mixture into the stream of tumbling material; and removing material which has become suitably dehydrated and granulated from the drum.
2. A method of dehydrating and granulating as claimed in claim 1, wherein said removing step is carried out adjacent the same end of the drum that new material is added.
3. A method of dehydrating and granulating as claimed in claim 1, wherein said removing step includes dropping certain material by gravity from the drum at one location and carrying other lighter material from the drum with said air current at a second location.
4. A method of dehydrating and granulating as claimed in claim 3, wherein is further included the step of cooling the lighter material as it leaves the drum at said second location by exposing the lighter material to a supplemental air current drawn into the drum through said one location.
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