RU229382U1 - WOOD PROCESSING DEVICE WITH IR RADIATION - Google Patents

Abstract

The utility model relates to the woodworking industry, in particular to the protective heat treatment of wood products. Surface treatment of wood is performed to form a protective layer using IR radiation to improve its operational and decorative properties. The technical task of the proposed utility model is heat treatment of wood with IR radiation in a chamber to form a surface protective and decorative layer of wood. A device for processing wood with IR radiation, containing feed rollers, a frame, a chamber, IR burners, a pipe, guide rollers, receiving rollers, brushes, characterized in that IR emitters are installed in the installation chamber, located at the top and bottom, attached to the chamber with a bolted connection; cleaning of wood blanks from combustion products is carried out by brass brushes, located at the top and bottom, attached to the frame with a bolted connection. 1 Fig.

Description

The utility model relates to the woodworking industry, in particular to the protective thermal treatment of wood products. Surface treatment of wood is performed to form a protective layer using IR radiation to improve its operational and decorative properties. The technical task of the proposed utility model is thermal treatment of wood with IR radiation in a chamber to form a surface protective and decorative layer of wood.

A method for protective treatment of wood products is known [1]. The method for protective treatment of wood products includes thermal modification with the formation of a surface protective layer, characterized in that thermal modification is carried out at a temperature of 150...250°C, and the surface protective layer is formed by firing to a depth of no more than 2 mm, the sequence of thermal modification and firing operations is variable.

The closest in technical essence is a device for processing the surface of wood products with low-temperature plasma flows [2] for processing wood products, powered by a power source, has an indirect plasma generator and a water-cooled chamber for concentrating heat flows. The end sides of the chamber are closed with lids having two openings through which wood products of a given shape are fed. To separate the plasma flows on a sloping arch inside the chamber, a diffuser is located, and a heat insulator is installed to reduce heat loss. A window for the exit of heated gases is located on the vertical wall of the chamber.

The disadvantages of the known device are low productivity and high energy costs when implemented in industrial conditions.

The technical task of the proposed utility model is thermal treatment of wood with IR radiation in a chamber to form a surface protective and decorative layer of wood.

The device is explained in Fig. 1, which shows a general view of the device for processing wood with IR radiation.

The device for processing wood with IR radiation includes: 1 - wood blank; 2 - feed rollers; 3 - frame; 4 - chamber; 5 - IR burners; 6 - pipe; 7 - guide rollers; 8 - receiving rollers; 9 - brushes.

The device for processing wood with IR radiation operates as follows. The unit can operate on naturally dried wood (at least 3 months) of one batch, which allows achieving uniform moisture content of all blanks, or pre-dried wood, which allows ensuring uniform processing of the wood. The wood blank (1) is fed into the unit by means of feed rollers (2) installed in ball bearing supports, which are secured to the frame (3) of the unit by means of bolted connections. The rollers are driven by an electric motor through a reducer and a belt transmission, the feed rate of the wood blanks is regulated by a frequency converter (not shown in Fig. 1). IR emitters (5) are installed in the chamber (4) of the unit, located above and below the loaded wood blank. The IR emitters are secured to the chamber by a bolted connection. The wood blanks move slowly on rotating rollers and are subjected to thermal treatment with IR radiation in the chamber. Processing in the chamber reduces the loss of hot smoke from gas combustion in IR burners and natural combustion of wood into the environment, which contributes to more uniform heating of the workpiece and reduction of heat losses (increases the efficiency of the unit). The chamber also allows for processing in a confined space, which ensures fire safety of production, and also allows collecting combustion products for further use - obtaining steam and drying raw materials. A pipe (6) welded to the chamber removes combustion products from the chamber and for further use. Ash formed during operation can be used as fertilizer. The workpieces are advanced in the chamber by means of guide rollers (7), and exit the combustion chamber by means of receiving rollers (8) installed in ball bearing supports, which are bolted to the frame of the unit. Rotation of the rollers and rollers is carried out by means of a chain transmission from the feed rollers. Wood workpieces exiting the combustion chamber are extinguished with steam. Next, the wood blank is fed for cleaning from combustion products by brass brushes (9), located above and below the loaded wood blank. The brushes are driven by electric motors (not shown in Fig. 1), secured to the frame from below and above by a bolted connection. Coal powder can also be collected and briquetted, after which it can be used as fuel. After leaving the installation, the finished wood products are stacked for final drying and cooling.

Thus, the claimed technical solution allows obtaining wood with improved operational and decorative properties. The surface of wooden products that have undergone processing is more resistant to the appearance of fungi, mold and other wood defects due to the removal of the environment suitable for their formation.

Literary sources

1. Patent No. 2767195 C1 Russian Federation, IPC B27M 1/08. Method for protective treatment of wood products: No. 2020140240, declared 08.12.2020, published 16.03.2022/O.A. Rubleva, N.A. Tarbeeva; applicant Federal State Budgetary Educational Institution of Higher Education "Vyatka State University".

2. Patent for utility model No. 212821 U1 Russian Federation, IPC B27K 5/00. Device for treating the surface of wood products with low-temperature plasma flows: No. 2021139632, declared 29.12.2021, published 10.08.2022 / G.G. Volokitin, V.V. Shekhovtsov, K.A. Bezukhov, V.A. Cheremnykh; applicant Federal State Budgetary Educational Institution of Higher Education "Tomsk State University of Architecture and Civil Engineering".

Claims (1)

A device for processing wood using IR radiation, characterized in that it contains a frame, feed rollers installed in ball-bearing supports secured by means of bolted connections to the frame, a chamber with a pipe for removing combustion products, IR emitters located in the chamber at the top and bottom, secured to the chamber by a bolted connection, guide rollers for advancing workpieces in the chamber, receiving rollers installed in ball-bearing supports secured by means of bolted connections to the frame, brass brushes for cleaning wood workpieces from combustion products, located at the top and bottom, secured to the frame by a bolted connection.