CN85101957A

CN85101957A - Wood impregnation method and implement certain device of this method

Info

Publication number: CN85101957A
Application number: CN85101957.9A
Authority: CN
Inventors: 罗森伦德
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1987-01-10
Also published as: CN1019366B

Abstract

A kind of usefulness is impregnated solution to the method and apparatus that timber impregnates, and comprises immersion can, in jar vacuum extractor is arranged, and also comprises the conduit of connection immersion can and storage tank etc.Timber places airtight measuring body immersion can, and the air in jar is got rid of all or almost all, subsequently, impregnates in the solution tank filling following of pressure.The air composition that contains in the solution is before injecting jar, got rid of all or almost all, solution injects under fully airtight condition, thereby when in the timber that liquid permeates, impregnate liquid and do not contain gas and air fully or almost completely, under vacuum, impregnate.

Description

Wood impregnation method and implement certain device of this method

The invention relates to and use certain to impregnate the method that liquid impregnates timber and certain device of implementing this method.

People are known, can handle timber with pressurization injection method or deep layer injection method.This processing method has been used some times.Its purpose is to rot for timber can be resisted more, prevents that mould from corroding and pre-protection against insect moth erosion timber.Impregnating agent generally is certain liquid, and this liquid contains the salt of various solubilities, and these salts have certain toxic effect usually.

Now, prevailing implementation method is that desiccated wood is placed in the pressure vessel, and this container will be through vacuumizing processing.The purpose of doing like this is to go for the air extraction that is present in as much as possible in the wood cell.Then, impregnating liquid following of atmospheric pressure is incorporated in the immersion can from a kind of special holding vessel.Because suction, timber will adsorb this and impregnate liquid.It is quite low that the shortcoming of this method is that the ability of liquid is impregnated in timber absorption.Reason is fully impregnated before liquid surrounds when timber, spend regular hour often, during this period of time, be before wood substance is surrounded by liquid fully, timber can absorbed air, and then the cell in the timber can be by the air filling, rather than is impregnated the filling of liquid institute.Thereby the internal pressure of wood cell wall and external pressure are reaching equal on the degree greatly.Thereby make and impregnate liquid and be penetrated into the less of quantitative change on the timber.

From the final result of this known treatment process as can be seen, promptly no matter timber has lost the such fact of a large amount of gas volumes in the cell that is included in it, it is not once all impregnated liquid by all occupied volumes of gas and is replaced.Even it also is like this that wood substance all has been immersed in the liquid.Because timber do not deform, can affirm that it is occupied by some other material not impregnated the residual volume that liquid occupies.According to reasoning from logic.This material must be a gas, and this gas contains partly air, enters by timber is adsorbed when this air adds liquid.In addition, according to the dissolution law of gas in liquid, with respect to liquid, the compressibility of gas is greater than liquid, thereby the gas in the liquid also might be excluded away.Cell film in the timber has such specific character, promptly different materials is had certain restricted, as: glucose molecule can allow hydrone to pass through itself, in other words, the big molecule of little molecular proportion passes through film easily, therefore, and in known impregnating method, when big molecule entered in the cell of timber by film, the gas molecule that impregnates in the liquid had also entered simultaneously.This has just reduced fluid molecule and be penetrated into the possibility of going in the cell in impregnating material.This performance has caused impregnating the lower osmosis of liquid in this class timber.Particularly Pinus timber is exactly to impregnate in this way at present.This also means, the timber of some other important kind, and as Abies timber, because these two kinds of cyto-architectural differences of coniferous tree, people think that also the method that is unsuitable for pressure impregnating handles.Consequently, in Norway, only Pinus timber is to handle by above-mentioned said method.And this limitation brings many shortcomings for this method.

The objective of the invention is in order to improve the impregnating method of this wood substance.Purpose is to increase the degree of depth of impregnating liquid, and make over be considered to be unsuitable for the pressure impregnating method and the degree of depth impregnate processing that class timber be treated as possibility.

This purpose can be by reaching the timber that will impregnate with impregnating the method that liquid impregnates.This timber will be placed in the pressure vessel of a sealing, perhaps be placed on one can impregnate processing the jar in.Air in jar will fully or almost entirely be evacuated.Subsequently, depress adding, during the liquid that impregnates processing is imported jar.This method is characterised in that, this impregnated liquid before being pressed into immersion can, did not contain gas and air component or air component fully or almost completely, like this, be penetrated into timber when going impregnating when carrying out at liquid, liquid does not then contain gas and air fully or almost entirely.And, in the jar that jar has vacuumized and vacuumized, carry out wood impregnation, go thereby make gas and air or air component have no chance to be penetrated in the timber.

Basic conception of the present invention is will be to timber or more precisely the cell in the timber is given and vacuumize earlier and keep its vacuum state always.When importing liquid, make and impregnate liquid and can be adsorbed by cell membrane.Thus, impregnating before liquid carries out osmosis by cell membrane, make this cell and cell around having no chance to produce pressure balance between the thing.

When implementing this method, the process of from impregnate liquid air being discharged will be carried out in different jars.

This method can further be improved, and promptly after impregnating liquid and importing in the immersion can, this compression process of impregnating liquid can be depressed importing and do not have the method for air to produce with the volume that reduces immersion can or with adding.

The concrete enforcement of this method can also improve slightly, promptly imports in the jar impregnating liquid before jar vacuumizes, and like this, before jar vacuumized, timber was immersed in the liquid fully, subsequently, the timber that impregnates was pressed again.

The another one feature of this method is to put into an elastic container to liquid.This elastic container is by putting in jar, and this housing and the space between the elastic container of measuring body jar will vacuumize processing earlier, then elastic container are vacuumized processing, make its inner level of vacuum reach 95% or a little higher than 95%.Subsequently, pressurized treatments is carried out in measuring body jar housing and the space between the elastic container, by the known features of itself, used pressure is approximately 4 crust or is a bit larger tham 4 crust.

The further feature of method of the present invention is to produce vacuum in one telescopic jar.This jar is connected with the jar that impregnates by a conduit, and this telescopic jar when vacuumizing, by a valve and immersion can isolation.When reaching need vacuum the time, again with valve open, thereby can reduce the pressure of impregnating autoclave.

The device of implementing this method includes as the jar that impregnates, and this canned timber that remains to be impregnated, device also comprise makes jar necessary equipment of generation vacuum.In addition, also have conduit, utilize this conduit that the jar that impregnates is connected with storage tank.This storage tank is equipped with as the liquid that impregnates, so that after immersion can vacuumizes, by storage tank liquid is provided in the immersion can.The most important characteristic of this equipment is for storage tank, and device can make and not contain air and other gas in jar and the liquid thereof fully or almost entirely.Device also provides the condition that improves its pressure under airtight fully condition for immersion can.

Device provided by the present invention when its concrete enforcement, in order to improve the pressure of immersion can, can be realized with the method for the volume that reduces jar.This point can be accomplished, as: can be by putting one or more elasticity balloons that can inflation, perhaps be equipped with and a jar relevant liquid conduits, perhaps can be equipped with one or more mobile piston, perhaps between the pipeline of storage tank and immersion can, be equipped with a compression pump.

The present invention compares detailed explanation with reference to following accompanying drawing.This figure has showed the typical implementation process of device, utilizes this device can implement the illustrated method of the present invention.

The timber of desiring to carry out impregnation process (1) is placed in the immersion can (2), and this jar is positioned over one or more resilient containers (3) in the impregnating autoclave (2) for sealing and measuring body.Before timber began to impregnate program, container (3) will be used vavuum pump (4), and the pipe by (5), (6), (7), (8) excludes air wherein, (9) in the pipeline, (10) two valve opens.After air is got rid of, valve-off (10).Subsequently, storage tank (11) is communicated with vavuum pump (4) by pipe (12), (13).Opening valve (14) vacuumizes storage tank.Vacuumize finish after, valve-off (14) immediately.Air in the immersion can (2), is got rid of by pipe (5), (12) and (15) with vavuum pump (4), opens valve (9) and valve (16), until reaching need vacuum, valve-off (9) and (16) then.So far, can go out air or other air scavenge in immersion can (2) and the storage tank (11) fully or almost entirely.Storage tank (11) also can be operated in a jar that can stretch, and equally also can go out air or a small amount of air scavenge of impregnating in the liquid (17) that are present in the storage tank.

When the process of impregnating begins, can open valve (18), operate (19), valve (18), (19) make immersion can (2) be full of by the liquid that impregnates that comes from storage tank (11), the position of storage tank (11) will be higher than immersion can (2).When liquid transmitted, jar (11) will carry out suction operation by vavuum pump, open valve (9) and valve (14), equated with the gas pressure of outside until the gas pressure of liquid internal, then valve-off (18) and (19).

(P) be compressed-air actuated source, utilize (P) to be incorporated into the medium of compression in the elastic container (3) by valve (20), container (3) is expanded, pressure in jar (2) is brought up to 16 crust, perhaps a little higher than 16 crust, keep this pressure after a sufficiently long time, (time length will depend on volume and the Substance Properties that will impregnate).Pressure reduces, and the liquid that impregnates in jar (2) vacuumizes, and container (3) links to each other with vavuum pump and emptying.

If adsorbed excessive liquid by the material that impregnated, then can vacuumize jar (2) once more so that from timber sucking-off excessive impregnate liquid.

When jar (2) being vacuumized when handling, its force value should fast as far as possible being adjusted to makes impregnates the boiling point that liquid is lower than the boiling point of this liquid slightly or approaches to impregnate liquid.Immediately open valve (18) and (19), so that import in the jar impregnating liquid.

The device of above narrating and illustrating is characterized in that more typically, but, only otherwise break away from the content that the present invention is disclosed in the device claim, also can utilize other certain methods to implement.For example, use a mobile piston, can be used to replace elastic container, thereby be used for reducing the pressure that volume improves immersion can.Be used for getting rid of jar pipe-line system of interior air, can make various pattern.For example: use two pumps, by pump is linked to each other with jar (11), perhaps link to each other with a conduit, this conduit then can reach the purpose of the pressure that improves jar (2) between jar (11) and immersion can (2).Like this, liquid when jar (11) is drawn into the immersion can (2), liquid that can not contacts with air with gas.The pressure of immersion can bring up to need numerical value, and the force value of jar (11) can reduce.Because vacuum action, the force value in jar (11) can reach the numerical value that makes liquid arrive boiling point.At this moment, liquid surface can seethe with excitement, and the loss on its volume will compensate by the steam of liquid.

Claims

1, a kind of usefulness is impregnated the method that solution impregnates timber.In view of the above, timber will place airtight, in the measuring body immersion can.Complete or approaching fully being excluded away of air in this immersion can.Subsequently, being incorporated in the immersion can as the liquid that impregnates.And, it is characterized in that it impregnates liquid (17) through pressurized treatments, before immersion can pressurizes, fully perhaps almost entirely do not contain gas and the constituent of air that self comprised.Impregnate and do the time spent, under airtight fully condition, carry out, like this, can make liquid when impregnating processing, completely cut off with gas and air fully or almost entirely.Promptly when liquid was penetrated into timber (1), timber (1) was in through in jar that vacuumizes and the condition of impregnating under vacuum.Like this, gas and air or air component just can't be penetrated in the timber and go.

2,, it is characterized in that this deaeration that impregnates that liquid carries out is to carry out (by vacuumizing processing) in the another one jar, and then import in the immersion can according to the method for claim 1.

3, according to the method for claim 1 and 2, it is characterized in that along with impregnating after liquid imports in the immersion can, this pressurization of impregnating liquid (17) can be finished with the volume that reduces impregnating autoclave, or utilizes adding and depress, and introduces the liquid that does not contain air and produces.

4, according to the method for claim 1, it is characterized in that this impregnates liquid and imported in the jar before vacuumizing, like this, before jar vacuumizes, timber is immersed in the liquid fully, then, liquid and timber are carried out pressurized treatments.

5, according to the method for claim 4, it is characterized in that this liquid is closed in the elastic container, this elastic container places in the immersion can.

6, according to the method for claim 3 and 4, it is characterized in that being in measuring body jar housing and the space between elastic container or the flexible conduit, to vacuumize earlier, then elastic container inside or flexible conduit inside are vacuumized, make it reach 95% level of vacuum or a little higher than 95%, to the pressurization of the space between resistance to compression tank shell and the elastic container (or flexible conduit), by its known self-characteristic, its pressure is approximately 4 crust or a little higher than 4 crust subsequently.The liquid of handling through deaeration is imported to elastic container inside.

7, according to the method for claim 4, it is characterized by for a telescopic jar that has vavuum pump and vacuumize processing, this jar is connected with immersion can by a pipeline, the jar of being talked that can stretch is when vacuumizing processing by a valve body, isolated with immersion can, in this telescopic container, when reaching desired vacuum, then open valve, decrease the pressure in this jar.

8, a kind of device of implementing this method comprises immersion can (2) by the cited device of one or more claims of claim 1-3, and this immersion can (2) contains the timber that remains to be impregnated, and device also is included in the setting of the necessity that is used for producing vacuum gas in the jar.Connect jar (2) and a storage tank (17) with conduit, be equipped with in this storage tank and be used as the liquid that impregnates, after vacuumizing, provide to impregnating autoclave by storage tank and to impregnate liquid with convenient immersion can.It is characterized in that relevant storage tank (17), this device provides that make this jar and impregnate liquid can be fully or the device of deaeration or other gas almost entirely, about immersion can (2), this device provides the device that improves the pressure of jar (2) under airtight fully condition.

9, according to a kind of device of claim 8, it is characterized in that this device is used for improving the pressure of immersion can (2), reach with the mode of the volume that reduces immersion can.As: one or more elasticity balloons (3) that can inflation are installed in jar (2), perhaps be placed in jar liquid conduits that is connected in.

10,, it is characterized in that in the system of immersion can (2) and storage tank (17), using a common vavuum pump according to the device of claim 8 or 9.

11,, it is characterized in that the solution that impregnates of having got rid of air in advance being imported to immersion can from hold-up tank by a kind of compression pump device according to the device of claim 8,10 or 10.