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Wood staining method and equipment

A kind of equipment and wood technology, which is applied in the field of wood dyeing, can solve the problems of immaturity, low equipment investment, and high difficulty, and achieve the effects of reducing dyes, increasing production output, and low production costs

Active Publication Date: 2011-07-20
JIANGSU DAYANG WOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the industrial applications use the cooking method and soaking method, because these two processes are relatively mature, the investment in equipment is very low, and the threshold for enterprise implementation is relatively low, but the disadvantages of the cooking method and soaking method are: the processing time is relatively long and the effect is not stable. , it is not suitable to use high-viscosity treatment liquid, and the treatment depth is limited, and these problems are limited by the technology, so it is difficult to solve them. The coating method is to color the wood surface by machine or by hand.
[0003] In terms of wood dyeing, judging from the current information, it is ideal to use the pressure injection method in theory. It is used for dyeing, flame retardancy, and encryption. However, there are many new problems, such as pretreatment of materials, heating and cooling of dye liquor, balance of temperature difference and concentration of various parts of dye liquor, safe pressurization and pressure relief, reasonable and safe opening and closing of various parts of pressure tank pipe valves, dye The accurate proportioning etc., so the existing technology is not mature enough for the dyeing of thin wood chips and the technical means that can be used on a large scale for industrial use

Method used

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  • Wood staining method and equipment
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  • Wood staining method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, each piece of size is 0.001 × 0.64 × 2.55M poplar wood chips, 3 cubic meters of wood in total, vertically placed in a sealed container, separated by a mesh between adjacent two pieces of wood, sealed container, the container Vacuum the inside to below 75 Torr Pa, keep it for 3 minutes, add purple red dyeing liquid with a temperature of 90°C into the container to make it completely soak the wood, and keep the dyeing liquid circulating at a flow rate of 100 cubic meters per hour, through steam and pressurization The pump heats and pressurizes the container to make the liquid pressure reach 1.2 MPa, and maintains it for 100 minutes. Open the balance valve to relieve the pressure, open the cooling tower, and cool down the dyeing liquid. The temperature of the dyeing liquid drops below 60°C. Drain the dyeing liquid from the sealed container Open the airtight container and take out the wood. The whole process takes 3 hours. The dyeing rate of wood chips is 100%,...

Embodiment 2

[0032] Embodiment 2, each piece size is 0.002 * 0.64 * 2.55M paulownia wood chip, lumber altogether 4.5 cubic meters, vertically place in the airtight container, between adjacent two pieces of wood, separate with the mesh, airtight container, to container Vacuumize the interior to below 75 Torr Pa, keep it for 3 minutes, add black dyeing liquid with a temperature of 90°C into the container, make it completely soak the wood, and keep the dyeing liquid circulating at a flow rate of 100 cubic meters per hour, through steam and pressurization The pump heats and pressurizes the container to make the liquid pressure reach 1.2 MPa, and maintains it for 100 minutes. Open the balance valve to relieve the pressure, open the cooling tower, and cool down the dyeing liquid. The temperature of the dyeing liquid drops below 60°C. Drain the dyeing liquid from the sealed container Open the airtight container and take out the wood. The whole process takes 3 hours. The dyeing rate of wood chips ...

Embodiment 3

[0033] Embodiment 3, each piece of size is 0.005 × 0.15 × 2.4M, a total of 5 cubic meters of hard oak wood, vertically placed in a sealed container, separated by a 1.5mm thick spacer between adjacent two pieces of wood, and Use 20 pieces in one frame for easy loading and unloading, seal the container, vacuum the container to below 75 Torr Pa, keep it for 10 minutes, add walnut color dyeing liquid with a temperature of 95 ℃ into the container, make it completely soak the wood, and keep the dyeing liquid Circulate at a flow rate of 100 cubic meters per hour, heat and pressurize the container through steam and a pressurized pump, make the liquid pressure reach 1.2MPa, and keep the temperature at 110°C for 110 minutes. Open the balance valve to relieve the pressure, and turn on the cooling tower. The temperature of the liquid is cooled, the temperature of the dyeing liquid drops below 60°C, the dyeing liquid is removed from the airtight container, the airtight container is opened, ...

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Abstract

The invention discloses a method and an equipment for dyeing wood, which solves the technical problem of shortening dying time and increasing productivity. The method of the invention includes the following steps that put wood in a container and vacuumize the container; add dyeing fluid into the container and pressurize and heat up in the container to circulate the dyeing fluid. The equipment fordyeing wood comprises a sealed container which could be opened; the sealed container is separately connected with a vacuum system, a dyeing fluid feed and circulation system, a pressurization and heating system, a cooling system, an exhaust system, a measurement and control system and an operating system. Compared with the prior art, the invention adopts a hydraulic circulation system to circulate the wood dyeing fluid in the sealed container to facilitate the fluid homogeneous and then the wood dyeing would be more homogeneous and color would be more vivid with high temperature and high pressure; in this way, the dyeing time is shortened and the needed dye is greatly deduced; the productivity is increased and the production cost is reduced; therefore, the invention is suitable for industrial mass production.

Description

technical field [0001] The invention relates to a wood dyeing method and equipment, in particular to a wood fast dyeing method and equipment. Background technique [0002] Wood dyeing and modification have been researched in this area for a long time at home and abroad. Many universities, research institutions, enterprises and individuals in our country have also made great progress in the research work in this area. For wood processing enterprises, the use of Modified dyeing treatment technology can process low-priced wood raw materials, such as plantation fast-growing wood, to achieve the texture of high-grade wood. Whether it is from the perspective of improving the economic benefits of enterprises or from the perspective of sustainable development, it is very important. is of great significance. At present, there are generally four kinds of wood dyeing and modification techniques: the first is injection method, the second is cooking method, the third is soaking method, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/02B27K3/02
Inventor 车炳雷黄衍顺
Owner JIANGSU DAYANG WOOD