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Vacuum pressurizing and dipping equipment for producing wood plastic composite

A technology of vacuum pressure impregnation and equipment, applied in the direction of pressure impregnation, etc., can solve the problems of cumbersome placement and removal of wood, insufficient impregnation, cumbersome and other problems, and achieve the effects of stable temperature control, pollution reduction, energy saving and pollution

Inactive Publication Date: 2012-08-08
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vacuum pressure impregnation equipment for producing plastic composite wood, which can solve some cumbersome and inconvenient problems in the production of plastic composite wood, such as vacuum pressure impregnation tank and heating tank are independent of each other, wood placement and take out cumbersome etc.
It can also solve the problem of insufficient impregnation of wood due to buoyancy floating, and can automatically adjust to the set pressure, vacuum and temperature, and can also collect part of the inert gas and small molecule volatiles used as protective gas to reduce the production environment. Pollution

Method used

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  • Vacuum pressurizing and dipping equipment for producing wood plastic composite
  • Vacuum pressurizing and dipping equipment for producing wood plastic composite
  • Vacuum pressurizing and dipping equipment for producing wood plastic composite

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specific Embodiment approach 1

[0009] Specific implementation mode one: vacuum pressure impregnation of wood. to combine figure 1 and figure 2 To illustrate a specific embodiment, the safety valve 23 is opened before the impregnation of wood begins, and remains open throughout the impregnation process. Pull out the pulley 15, put the wood to be impregnated on it and place it, then push it into the tank along the slideway 16, and select the anti-drifting parts with the corresponding length according to the height of the pile against the pile to prevent the impregnation process of wood Float up in the middle, close tank body door 18 again. When it is determined that the valve 14 of the emptying valve 25, the suction / discharge pipe 13, and the pressurizing valve 28 are all closed, the vacuum pump 8, the vacuum buffer tank 7 and the vacuum pressure gauge 30 are opened, and the value of the vacuum gauge vacuum gauge 30 is drawn. To be slightly lower than the required value, open the vacuum valve 32 to vacuum...

specific Embodiment approach 2

[0010] Specific implementation mode two: heating and solidifying to produce plastic composite wood. The same point between this embodiment and specific embodiment one is that the process of impregnating wood under vacuum pressure is the same, and the difference is that the impregnated wood is placed in the tank body 9 for heating and curing, that is, the fixation of the impregnating liquid in the wood . Impregnate wood according to the method of mode 1, put the impregnated wood in the tank body 9, close the tank body door 18, open the heating medium inlet valve 20, and the heating medium outlet valve 22, so that the heating medium circulates continuously on the simplified body 12 Heating, insulation layer 10 maintains a stable temperature until the required temperature, if the temperature is too high, the cooling medium inlet valve 24 and the cooling medium outlet valve 27 will be automatically opened and adjusted to the required temperature, so that the temperature inside the...

specific Embodiment approach 3

[0011] Specific implementation mode three: Protect with inert gas when producing plastic composite wood. The same point between this embodiment and specific embodiment 1 and specific embodiment 2 is that the process of vacuum pressure impregnation of wood is consistent, and the difference with specific embodiment 2 is that this embodiment needs to add protective gas, which has the effect of Reduce the inhibitory effect of oxygen on the impregnating liquid in wood, and reduce the cracking and thermal degradation of wood after joining and curing. According to the methods of Embodiment 1 and Embodiment 2, the wood is first impregnated, then heated for curing, and then the inert gas tank 5 and the inlet valve of the protective gas inlet / outlet valve 29 are opened to allow the protective gas to slowly enter the impregnated tank body 9, and then close. After the reaction is finished, open the inert gas collection tank 6 and the outlet valve of the protective gas inlet / outlet valve ...

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Abstract

The invention relates to vacuum pressurizing and dipping equipment for producing wood plastic composite. The vacuum pressurizing and dipping equipment mainly comprises the following five parts: a pressure control system I, a temperature control system II, a protection system III, a vacuum system IV and a dipping system V. In a wood plastic composite production process, the pressure control system I, the vacuum system IV and the temperature control system II can be conveniently used for automatically compensating pressure, automatically regulating the vacuum degree and automatically controlling the temperature for producing according to a specified production process; inert gas can be used as protective gas by the protection system III, and the protective gas is collected by a gas collection bottle (6) after production; the dipping system is equipment integrating the functions of wood dipping and heating into a whole, and a slide way (16) and a slide wheel (15) are arranged in the dipping equipment and are convenient for putting wood before dipping and taking out the wood after dipping; and a floating prevention piece (19) can be used for preventing wood from floating above dipping liquid in a dipping process. The vacuum pressurizing and dipping equipment has the characteristics of energy saving, environmental protection, convenience in operation and practicability.

Description

technical field [0001] The invention relates to a vacuum pressure impregnation equipment for producing plastic composite wood. Background technique [0002] In the production of plastic composite wood, chemical reagents (small molecular weight reagents, monomers or resins, etc.) are usually injected into wood by vacuum and pressure, and then the small molecules are polymerized into macromolecules under heating or radiation conditions. Fix the chemical reagents in the wood to make plastic composite wood. In the past, the most common and traditional method of injecting chemical reagents into wood was vacuum pressure, but most of the vacuuming, pressure and heat curing processes were independent, that is, the two processes were carried out in two tanks. At present, there are still many unreasonable problems in the device that integrates the two functions of vacuum pressurization and heat curing at the same time, such as cumbersome placement and removal of wood, unstable temper...

Claims

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Application Information

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IPC IPC(8): B27K3/10
Inventor 谢延军符启良王海刚王清文
Owner NORTHEAST FORESTRY UNIVERSITY
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