METHOD OF TIMBER DRYING (TYPES) AND CONTAINER FOR THIS PROCESS Russian patent published in 2008 - IPC F26B3/02 F26B9/06 

FIELD: construction; woodworking industry.

SUBSTANCE: method of timber drying, mostly planks, according to type 1, is performed by supplying heat to the timber, withdrawing escaping moisture and a partial moisture proofing of its surfaces. This is the case when the partial moisture proofing is done along with the start of bound moisture removal from the timber in turn for the opposite faces of each unit of timber whereas a working cycle whose first pat covers some of the timber faces with insulating materials leaving the opposite faces exposed, and whose second part opens the previously closed faces, and covers the previously opened ones with insulating materials. This method is done at least once and the last cycle can be incomplete. The second type of the method implementation, as a supplement to the first one, uses drying timber of the same assortment and dimensions as insulating materials for the drying timber. As this takes place, the first part of any operating cycle the last of which can be incomplete is done in a batch stack. For this purpose, the batches with two units of timber connected with faces are formed. In order to perform the second part of the same cycle, the specified stack is disassembled and a similar one is piled. For this purpose, batches are formed of timber pairs in such a way that timber faces in the batches that were connected to be moisture proof in the first part of the cycle, become external in the batches in the second part of the cycle and the other way round, that is, the faces exposed in the first part of the cycle are connected to be moisture proof in the second part of the cycle. In order to implement the first part of the next operating cycle a stack made in the second part of the completed cycle is disassembled and the next one is piled, in a similar manner changing the waterproof faces, and this method is used until the end of drying. A conveyor is used for the first and second part of any operating cycle the last of which can be incomplete in the third type of the drying method as opposed to the second type. For this purpose, timber is laid with their edge downwards close to the container pillars in batches of two connected timber faces on each row of horizontal shelves. The following batches made of pairs of connected timber units of the same assortment and size are piled on top of each of the timber batches with edges upon edges until the shelves to the top of the container are full. Pads follow each of the vertical rows of batches formed in this manner. Retaining plates are placed after the last vertical row of batches, after which the timber is pressed by means of retaining plates to provide insulation of the connected faces. In the forth type of the drying method as an addition to the third one, the second part of any cycle releases retaining plates, the pads are extracted by rows and each of their rows is put after odd vertical timber rows starting from the first one. Moreover, before placing the last row of the pads, the timber of their last vertical row is marked and extracted from the container. Then, the timber is released from the container pillars and installed into the spaced formed with each timber unit fitted in its level along the full vertical extent of the container. After that, the timber is pressed by means of retaining plates to provide insulation of the connected faces, and in the first part of any subsequent cycle the first row of pads is removed and the previously moved timber of the last row are returned to initial places near the retaining plates. The extracted row pads are put after the second row of timber, then the pads are extracted by rows along the timber units and put after each even row of timber, after which the timber is pressed by means of retaining plates to provide insulation of the connected faces. The drying container contains beams with pilot bushes, compression planks, outriggers, big and small pins, and the beams are mounted on the top end of all pillars parallel to axes of the lengthwise load beams. The pillars are equipped with thread bushes containing push bolts. The threaded stays contain distance coupling with left and right buttress thread that connect mostly upper and lower screw-type stops. There are rollers installed on the retaining plates and partially on of the horizontal shelves. The compression planks have sockets for pushers and holes located on both ends of the planks above and below the timber level. Similar holes above and below the timber level are made on both ends of the retaining plates.

EFFECT: reduced moisture content; reduced internal stress and deformations.

12 cl, 3 dwg