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木材防腐压力浸注罐处理五大阶段

来源:http://www.jnajgc.com 时间:2021-01-18

木材压力浸注罐满细胞法就是使木材细胞中充满防腐剂溶液,使木材保留有大量的防腐剂。这种方法适合于用水载型木材防腐剂来处理木材,也适用于用煤杂酚油来处理海港桩木、枕木等。下面山东防腐木的小编为大家介绍下木材防腐压力浸注罐处理的5个阶段:
The full cell method of wood pressure impregnation tank is to make the wood cells full of preservative solution, so that the wood retains a lot of preservatives. This method is suitable for treating wood with water-borne wood preservative and coal creosote oil. The following is a brief introduction to the five stages of the treatment of wood preservative pressure impregnation tank
1、木材压力浸注罐前真空阶段:
1. In the vacuum stage before the pressure impregnation tank of wood:
山东防腐木
将木材放入压力浸注罐中,关好罐门后,开启真空泵,向浸注罐抽真空(一般为-0.080~-0.095MPa),保持15分钟,以抽出木材细胞腔中的空气,使得木材容易被防腐剂浸注,并且减少在卸压时防腐剂反冲出来,保留较多的防腐剂在木材中。
Put the wood into the pressure impregnation tank, close the door of the tank, start the vacuum pump, vacuum the impregnation tank (generally - 0.080 ~ - 0.095mpa), keep for 15 minutes, so as to extract the air in the wood cell cavity, make the wood easy to be impregnated by preservatives, and reduce the anti-corrosion agent backwashing out during pressure relief, so as to retain more preservatives in the wood.
2、木材压力浸注罐加防腐剂阶段:
2. In the stage of adding preservative to the pressure impregnation tank of wood:
在不关闭真空泵的情况下,即保持原有真空度的条件下,加入防腐剂溶液。如果在防腐剂加满压力浸注罐之前关掉真空泵,那么浸注罐中残留下来的空气,或由处理溶液产生的蒸气就被压缩到浸注罐的上部,那么当继续加防腐剂溶液时,这些气体就会充填材堆上部木材中在抽真空时被抽空了的空间,这样,就使这部分木材吸收较少数量的防腐剂溶液,造成同一批次处理的木材上下不均匀的结果。
In the case of not turning off the vacuum pump, that is, keeping the original vacuum, add preservative solution. If the vacuum pump is turned off before the pressure impregnation tank is filled with preservative, the residual air in the impregnation tank or the vapor generated by the treatment solution will be compressed to the upper part of the impregnation tank. When the preservative solution is added continuously, these gases will fill the space in the upper wood of the timber pile which has been evacuated during vacuum pumping, so that this part of the timber can absorb a small amount of water Preservative solution, resulting in the same batch of wood up and down uneven results.
3、木材防腐罐加压阶段:
3. During the pressurization stage of wood preservation tank:
当防腐剂加满压力浸注罐后,关闭真空泵,消除真空后,施加压力(可以用液压,也可以用空气压),达到所需要的压力(一般为0.8~1.5MPa)保持一段时间(一般为2~6小时),直到所需要的防腐剂量已经深深的被压入木材中,或者到木材拒绝吸收防腐剂溶液之点为止。当加压阶段终了,排除压力时,由于被压缩在木材中的少量空气的膨胀作用,在加压阶段被木材吸收的防腐剂溶液有5~15%此时会从木材中反冲出来,回到压力浸注罐中。
When the preservative is filled with pressure, close the vacuum pump, remove the vacuum, apply pressure (hydraulic pressure or air pressure) to reach the required pressure (generally 0.8-1.5mpa) and keep for a period of time (generally 2-6 hours), until the required anti-corrosion dose has been deeply pressed into the wood, or to the point where the wood refuses to absorb the preservative solution until. At the end of the pressure stage, when the pressure is removed, due to the expansion of a small amount of air compressed in the wood, 5-15% of the preservative solution absorbed by the wood in the pressure stage will recoil from the wood and return to the pressure impregnation tank.
4、木材压力浸注罐排液阶段:
4. During the discharging stage of pressure impregnation tank for wood
在解除压力后,利用防腐剂溶液的重力作用,或用排液泵,将压力浸注罐中的防腐剂溶液返回到防腐剂溶液贮槽中。
After the pressure is released, the preservative solution in the pressure infusion tank is returned to the preservative solution storage tank by the gravity of the preservative solution or by the discharge pump.
5、压力浸注罐后真空阶段:
5. In the vacuum stage after the pressure infusion tank:
排尽防腐剂溶液后,关闭所有阀门,接通真空泵,开始后真空阶段。后真空的真空度可以和前真空一样(-0.080~-0.095MPa),或稍低一些,保持10~30分钟。然后解除真空,放出在后真空阶段抽出的防腐剂溶液。打开罐门,取出经处理的木材,防腐处理已完成。
After the preservative solution is exhausted, close all valves, connect the vacuum pump and start the post vacuum phase. The vacuum degree of the rear vacuum can be the same as that of the front vacuum (- 0.080 ~ -0.095mpa), or slightly lower, for 10-30 minutes. Then remove the vacuum and let out the preservative solution extracted in the post vacuum stage. Open the door of the tank and take out the treated wood. The anticorrosion treatment has been completed.