A method for impregnating wood with a wood impregnating device

Abstract

The invention discloses a wood impregnating device. The device comprises a high-temperature normal-pressure liquid storing box, a booster pump and a high-temperature high-pressure liquid storing tank, wherein the booster pump is arranged between the high-temperature normal-pressure liquid storing box and the high-temperature high-pressure liquid storing tank; a heating device is arranged in the high-temperature high-pressure liquid storing tank; the high-temperature high-pressure liquid storing tank communicates with a wood impregnating tank through a wax feeding pipeline and a wax returning pipeline; the level height of the wax feeding pipeline is less than that of the wax returning pipeline; a circulating pump and a wax feeding stop valve are arranged on the wax feeding pipeline; a sealing tank door which can be opened and closed is arranged at an opening in one end of the wood impregnating tank; a wax returning stop valve is arranged on the wax returning pipeline; an electric heating plate is arranged in the wood impregnating tank; a safety valve, an overflowing port, an air pumping port, a pressure gauge and a pressure sensor are correspondingly arranged on the upper surface of the wood impregnating tank; a temperature sensor is positioned on the sidewall of the wood impregnating tank; the safety valve and the overflowing port intercommunicate through a communicating pipe. With the adoption of the device, high-flow-rate medium can flow into the wood impregnating tank while the wood impregnating tank remains high pressure.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a method for impregnating wood with a wood impregnation device. Background technique [0002] The wood impregnation device is mainly composed of a wood impregnation tank, which is a high-temperature and high-pressure equipment commonly used in wood treatment. It puts untreated wood into the impregnation tank and feeds a medium for treating wood (the characteristics of the medium are similar to those of wax Similarly, it is solid at normal temperature, and its melting point is about 80°C under standard atmospheric pressure). Wood is cooked at high temperature through this medium, and at the same time, high pressure allows the medium to penetrate into the wood. Usually the working pressure is greater than 1MPa, and the temperature is greater than 150°C. Under normal working conditions, the medium in the wood tank will continue to decrease and enter the wood, so the medium ...

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Problems solved by technology

[0003] The current wood impregnation device, after reaching a certain pressure and temperature, it is difficult to keep the temperature of the medium above the required temperature in the working state, and the pump body used in the existing market is difficult to meet the high pressure and high flow requirements at the same time. The reason is that if you want to meet the high pressure, you must continue to pressurize. In the process of continuous pressurization, if the flow rate of the outflowing liquid is too fast, the overall pressure will be greatly reduced. In order to maintain high pressure and high flow rate, the pump body must Increase the power of the pump body, this power increase is often several times or even dozens of times, which will greatly increase the requirements for the pump body, and the current technology is difficult to really make a pump body that meets the required power, so How to keep the high pressure of the wood impregnation tank and the flow of high flow medium at the same time has always been one of the problems that plague the wood impregnation process.

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