GB/T 6197-2024 in English

GBT 6197-2024 Technical requirements and test methods for veneer dryers

1. Standard Overview

This standard replaces GB/T6197-2000 and GB/T6199-2000, and is mainly applicable to roller and mesh belt dryers for wood veneers. New content includes term definitions, safety requirements, energy efficiency limit values and geometric accuracy inspection methods.

2. Comparison of standard frameworks

3. Standard implementation recommendations

3.1 Equipment selection and procurement recommendations

When selecting a veneer dryer, the following factors should be considered comprehensively based on the type of wood to be processed, production requirements and site conditions:

• Drying efficiency: The roller type is suitable for fast drying of high-humidity materials, and the mesh belt type is suitable for thin boards and uniform drying.
• Energy efficiency level: High-efficiency motors that meet GB18613-2020 Level 3 are preferred (see 6.1.12).
• Safety configuration: Ensure that the equipment is equipped with emergency stop, high temperature alarm and belt deviation monitoring functions (see Section 6.4).

3.2 Precautions for installation and commissioning

Special attention should be paid during installation:

1. The difference in diagonal length of the frame should not be greater than 3mm (see 6.2.4).
2. The radial runout of rollers and rollers should comply with the provisions of Class 12 in Table B4 of GB/T1184-1996 (see 6.2.2).
3. The geometric accuracy inspection should be carried out section by section during the installation process (see Section 6.5).

4. Diagrams and Specifications

4.1 Schematic diagram of the structure of roller-type veneer dryer

As shown in the figure, the roller dryer consists of an outer frame, an inner frame, a spray box, rollers, a transmission device, etc. (see Figure 1). The hot air circulation inside the equipment achieves wood drying through roller contact heat transfer.

4.2 Schematic diagram of the structure of mesh belt veneer dryer

As shown in the figure, the mesh belt dryer consists of an outer frame, an inner frame, a spray box, rollers, a transmission device, etc. (see Figure 2). The hot air circulation inside the equipment is transmitted through the mesh belt to achieve wood drying.