RU2688057C1 - Device for separation of sawn timber rows in drying pile - Google Patents

Abstract

FIELD: separation.

SUBSTANCE: invention relates to devices for separation of sawn timber rows in drying stack forming air channels in pile. Device is arranged in the form of spiral laid between rows of lumber. Spiral is made in the form of a cylindrical compression spring. Air channels are formed by inner cavity of each spring, wherein pitch t between adjacent springs corresponds to spiral diameter d as t > 1.02⋅d. Turns of spirals are located with pitch l, which forms inter-turn clearance, providing air exchange of adjacent air cavities in channel in all directions.

EFFECT: technical result is uniform distribution of circulating air in drying pile, higher reliability and efficiency when drying timber in pile.

5 cl, 3 dwg

Description

The invention relates to the woodworking industry, and can be used for drying wood, including very fine wood, such as slats or veneer.

For carrying out the drying of sawn timber and blanks in batch drying piles, separators are used for separating adjacent rows of sawn timber - gaskets that allow the air flow of the drying agent to pass through the drying stack.

Known separators for US patents 5722626 and 6134803 in the form of a spiral.

The decision on US patent 6134803 allows drying without traces of gaskets in convective chambers lumber, which have minimal allowances for processing after drying. This is necessary so that the color of the lumber surface is as smooth as possible (without foreign stains), as well as to protect lumber, which easily change color when it comes into contact with other wood / non-wood materials. This is achieved by a small spot of contact. However, the known separator does not provide full air channels in the stack.

The task and the technical result of the invention is the uniform distribution of the circulating air in the drying stack, increasing reliability and efficiency when drying wood in the stack.

образующим межвитковый зазор, обеспечивающим воздухообмен смежных воздушных полостей в канале во всех направлениях. Пружины в количестве двух и более объединены в блок. Пружины выполнены цилиндрической формы, например овальной, прямоугольной, треугольной, трапециевидной формы в поперечном сечении.This technical result is achieved by the fact that the device for separating rows of lumber in a drying stack, forming air channels in the stack, is made in the form of a spiral, laid between the rows of lumber. The spiral is made in the form of a cylindrical compression spring, and the air channels are formed by the internal cavity of each spring, with the step t between adjacent springs correlating with the diameter d of the spiral as t> 1.02⋅d, and the turns of the spirals are arranged in increments

forming inter-turn gap, providing air exchange of adjacent air cavities in the channel in all directions. Springs in the amount of two or more are combined into a block. The springs are cylindrical in shape, for example, oval, rectangular, triangular, trapezoidal in cross section.

The springs are made of non-corrosive material, such as stainless steel.

The springs are equipped with a rigid spacer element connecting the end zones of the spiral.

The invention is illustrated by the drawings which depict: FIG. 1 is a general view of the device with a spacer element connecting the end parts of the helix;

FIG. 2 - separation spring block with spacer element; FIG. 3 a, b - a block of separating springs with a rigid spacer element connecting the width limiters of a number of sawn timber in the stack;

A device for separating rows of lumber in a drying stack consists of separating elements in the form of springs, forming air channels in the stack by separating rows of lumber.

The device includes a spring 1, a distance element 2, limiting guides 3, a row of lumber 4, a row-to-row channel 5, a frame 6. The step t between adjacent springs corresponds to the diameter d of the helix as t> 1.02⋅d so that it can be placed between the springs of the spacer.

The device in FIG. 1 is made of a single spring 1 with a pitch of turns 1 and a diameter corresponding to the height of the inter-row air channel, and a rigid spacer element 2 connecting the end zones of the spring and ensuring a constant size and shape of the spring.

The device in FIG. 2 is made of two or more springs 1, the spacer element 2 and the stopper 3, which allows to precisely lay the elements on the surface of a number of lumber in the stack 4.

The device in FIG. 3a, is made with a rigid spacer element 2 connecting the guide rails 3.

A device for the separation of rows of lumber in a drying stack works as follows.

After laying lumber in the first row of the drying stack in accordance with technological requirements on the surface of a number of lumber 4 is installed with a certain step separating devices in the form of single or combined into blocks (Fig. 2) or on a single frame of springs 1.

The coils of the spirals are arranged with a certain step 1, which allows to create an inter-turn gap and to ensure the air exchange of adjacent air cavities in channel 5 in all directions.

Installed in the first row of the stack device form the next row of lumber 4, set the next device for the separation, and so on. Thus, form a full-sized drying stack with a system of inter-row air ducts 5.

After installation of the separation unit, a drying pile formed from several rows of sawn timber is placed in a drying chamber, where heated air (drying agent) is fed through the front side of the stack, which passes through inter-row channels 5 and evaporates and removes moisture from wood.

The springs 1 have low aerodynamic resistance to the passage of air in the forward and transverse direction, a low degree of shading and provide the greatest living section of the stack. At the same time, air freely circulates in the inter-row channel in the longitudinal and transverse direction, it is evenly distributed over the volume of the stack, which ensures high quality of lumber drying.

The proposed solution allows to simplify the design of the device for the separation of rows of lumber in the drying stack, to ensure uniform distribution of circulating air in the drying stack, to improve the quality and efficiency of the process of drying wood in the stack.

Claims (5)

1. A device for separating rows of lumber in a drying stack, forming air channels in a stack, made in the form of a spiral, laid between rows of lumber, characterized in that the spiral is made in the form of a cylindrical compression spring, and the air channels are formed by the internal cavity of each spring, the step t between adjacent springs is related to the diameter d of the helix as t> 1.02⋅d, and the turns of the helix are arranged in increments

forming inter-turn gap, which provides air exchange of adjacent air cavities in the channel in all directions. 2. The device according to p. 1, characterized in that the springs in the amount of two or more are combined into a block. 3. The device according to claim 1, characterized in that the springs are cylindrical, for example oval, rectangular, triangular, trapezoidal in cross section. 4. The device according to claim 1, characterized in that the springs are made of non-corrosive material, such as stainless steel. 5. The device according to claim 1, characterized in that the springs are provided with a rigid spacer element connecting the end zones of the spiral.

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