SU1615508A1 - Method of placing a stack of sawn timber - Google Patents

Abstract

The invention relates to drying, can be used in the wood processing industry and the building materials industry and allows to intensify the drying process. For this, material 1 is laid in layers with the formation of a package of material 1 placed on a perforated shelf 2. On a shelf 2 under a lower layer of material 1, a layer of moistened synthetic finely cellular cellular air-permeable sheet 4 and a lining 5 made of capillary finely cellular sheet material are successively placed, for example from cotton finely cellular fabric. Between all layers of material 1 in a package forming a stack, similar pads 5 are placed, and the pad area exceeds the area of the previous layer of the dried material 1. 1 sludge.

Description

ABOUT

JV Sd

The invention relates to drying and can be used for drying wood products, building ceramics in the form of plates, tiles, sheets, beams, blocks, etc. in various wood processing industries, the industry and the building materials industry.

The purpose of the invention is to intensify the drying process.

The drawing shows a stacked stack of products, as described below, a method of stacking a stack of sawn timber in a drying chamber, a slit.

In the drying chamber is placed dried products (material) 1 in layers with the formation of the package. The bag is placed on a shelf 2 with ventilation holes 3 placed between rows of dried products 1. Between the product package 1 and shelf 2 there is a layer of moistened synthetic fine cellular sheet air-permeable fabric 4. The fabric 4 may be dense, but with holes matching with holes 3 in shelf 2. The upper edge of the holes 3 is rounded. Between the fabric 4 and the package of products 1, as well as between all layers of products I, there is a lining 5, made of capillary finely cellular sheet material, for example, cotton finely cellular fabric. Fabric edges 4 hang over the edges of the product package 1, since the lining area exceeds the area of the previous layer of the material being dried. The lining 5 has openings between the rows of articles 1. The gaps between the rows of articles 1 toward the middle of the bag may increase. Shelf 2 with stiffener elements 6 and holes 7 for engaging with loader forks is mounted on racks 8, forming a stack in a drying chamber.

The number of layers of products 1 in packages is limited by the permissible load on products 1 in the lower layer.

The moisture content of the fabric 4 and its coefficient of elongation from moisture correspond to the humidity of the products 1 and their shrinkage during drying. The layers of fabric 4 impart mechanical stability to the package of products 1 due to bandaging between the stacks. Shelves 2 can be installed on drying cars for drying in traditional tunnel dryers.

The method of stacking a stack of sawn timber in a drying chamber is as follows.

Warm air during natural (summertime) or forced ventilation of the drying chamber rises along the stacks of items 1 through openings in shelf 2 and 5 of the layers of fabric 4 and 5. Some of the moisture from items 1 evaporates from their surface. Another part of the moisture goes to the wetting of the fabric 5. This part of the moisture evaporates from the free, surface of the fabric 5. At the same time, part of the salts from the products 1 passes into the fabric 5, which improves the quality of the products 1.

As products 1 and fabrics 4 and 5 dry up, shrinkage of products 1 increases and the linear dimensions of fabric 5 decrease, which prevents the application of products 1 to shelf 2, 15, which makes it possible to displace products 1 relative to shelf 2 when products shrink 1. This improves the quality of the dried products 1, since the loads of displacements of products 1 relative to the Q of the shelf 2 take on synthetic fabric 4, which is strong enough and has a high coefficient of elongation from moisture, while cracking and warping of products 1 is reduced.

Part of the moisture and salts from products 1 to 5 pills of fabric 5 passes to the periphery

fabric 5 hanging along the edges of the package that

increases evaporation area and increases

drying efficiency.

After drying (about two days), the packages on the shelves 2 are removed from the piles at racks 8 and disassembled. Products 1 are sent for further processing, and fabrics 4 and 5 are rinsed in water to remove salts, dust, and debris transferred to the fabric from contact with product I. After pressing and nipples, fabrics 4 and 5 are reused. Fabric 4 5 is not completely dried. When using paper as a lining 5 for the subsequent packaging of products or for other technological needs, there is no need for rinsing.

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Claims (1)

Invention Formula The method of stacking a pile of sawn timber in the drying chamber by placing each layer of material being dried 5 on linings, characterized in that, in order to intensify the drying process, the linings are made of capillary, finely cellular sheet material, and the area of the liner exceeds the area of the previous layer of material being dried.