CN100496912C - Vacuum pressurization impregnating and/or hot-set pot for plasticizing wood production - Google Patents
Vacuum pressurization impregnating and/or hot-set pot for plasticizing wood production Download PDFInfo
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- CN100496912C CN100496912C CNB2007100726884A CN200710072688A CN100496912C CN 100496912 C CN100496912 C CN 100496912C CN B2007100726884 A CNB2007100726884 A CN B2007100726884A CN 200710072688 A CN200710072688 A CN 200710072688A CN 100496912 C CN100496912 C CN 100496912C
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Abstract
A vacuum pressurization dipping and/or heating solidification tank for plastic wood production relates to a device for plastic wood production. The invention aims at the problems of the plastic wood production equipment of separation between the vacuum pressurization dipping tank and heating solidification tank, low utilization, low production efficiency and environmental pollution of the colophony monomer. A cylinder body (1) is provided with a dipping liquid or a monomer collecting concave trough (21), a jacket layer (26) and a heat preservation layer (27); the external wall of the dipping liquid or monomer collecting trough (21) is provided with a cooling jacket layer (23) to constitute a tank body (4); the tank mouth is provided with a fast-open door (29); a temperature meter or a first sensor (10), a safety valve (11), a vacuum meter or a second sensor (12), a pressure meter or a third sensor (13), an air discharge valve (14), an inert gas pressurization mouth valve and an outlet valve, a spare mouth valve (17), a vacuum mouth valve (18) are communicated with the cylinder body (1); a heating medium inlet valve (19) and a cooling medium inlet and outlet valve are communicated with the jacket layer (26); the dipping liquid or monomer collecting concave trough (21) is provided with an outlet (22). The invention has the advantages of high utilization ratio of the colophony monomer and high production efficiency.
Description
Technical field
The present invention relates to a kind of device of wood plastic composite production usefulness.
Background technology
At present, the technology that is used to produce wood plastic composite mainly contains two kinds: a kind of is to adopt after resin monomer is injected into timber
60The β ray of the gamma-rays of Co emission or electron accelerator emission comes the trigger monomer polymerization; Another kind is to impregnate timber inside again add polymerization initiator (radical initiator) in resin monomer after, by adding thermal-initiated polymerization, resin is fixed in the timber then.No matter being method one or method two, all is to adopt to carry out application of vacuum earlier and carry out pressure impregnating again and handle for the processing of impregnating of timber.Consider investment and process conditions in the production, use second method to produce now mostly.
Generally, use and to add equipment that the thermal-initiated polymerization method produces wood plastic composite mainly by vacuum pressure impregnating jar, jar that be heating and curing, vavuum pump, pressure surge tank, raw material storage tanks, corresponding pressurized equipment and can form for the thermal source that heats etc.In the process of producing, if adopt some resin monomers that are easy to volatilize (as methyl methacrylate, esters of acrylic acid), impregnate the timber of handling and transfer in the process that is heating and curing jar when vacuum pressure impregnating jar back warp is crossed, resin monomer can evaporate in the atmosphere, can cause that not only utilization ratio of raw materials reduces, but also can atmosphere pollution.In the process of heating, the resin monomer that is heated can expand, the polymerization initiator that has simultaneously can discharge gas in the process of decomposing, part resin monomer can be discharged from from timber, run into the tank skin of the jar that is heating and curing of heat, will polymerization at the bottom of still, equally also can cause the utilization rate of resin monomer to reduce.Because oxygen has inhibition to the polymerization of resin monomer, therefore the method that has is that the wood surface that impregnated resin monomer is sealed oxygen barrier with aluminium foil or polyethylene film, puts into and makes the resin monomer polymerization in the explosion-proof baking oven; What also have discharges air with inert gas, but heating finishes the mist of the saturated vapor of back inert gas and resin monomer, and directly entering atmosphere is a kind of waste to raw material, also is a kind of pollution to atmosphere simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of wood plastic composite production vacuum pressure impregnating and/or heat cure jar, it can solve existing production wood plastic composite equipment, because the vacuum pressure impregnating jar and the jar that is heating and curing separate, thereby have that volatility resin monomer utilization rate is low, production efficiency is low, the problem of serious environment pollution.
The present invention includes cylindrical shell, quick operating valve; The present invention also comprises thermometer or first sensor, safety valve, vacuum meter or second sensor, Pressure gauge or the 3rd sensor, exhaust-valve, inert gas pressurization mouthful valve, inert gas outlet valve, standby mouth valve, vacuum port valve, heat medium inlet valve, cooling medium outlet valve, cooling jacket layer, cooling medium inlet valve, heat medium outlet valve, chuck layer and heat-insulation layer; Described cylindrical shell is provided with near a lower end barrel of bottom one side and impregnates liquid or monomer collection groove, be provided with chuck layer and heat-insulation layer on the outer wall of cylindrical shell from the inside to the outside, the described outer wall that impregnates liquid or monomer collection groove is provided with the cooling jacket layer, constitutes tank body by cylindrical shell, chuck layer, heat-insulation layer, cooling jacket layer; On the jar mouth of described tank body quick operating valve is housed, the safety valve that communicates with the inner chamber of cylindrical shell is equipped with in the upper end of tank body, the vacuum meter or second sensor, Pressure gauge or the 3rd sensor, exhaust-valve, inert gas pressurization mouthful valve, the inert gas outlet valve, standby mouth valve and vacuum port valve, the heat medium inlet valve that communicates with the chuck layer is equipped with in the upper end of tank body, described cooling medium outlet valve is contained on the bottom face of chuck layer, cooling medium inlet valve and the heat medium outlet valve that communicates with the chuck layer is equipped with in the lower end of tank body, the bottom of described cooling jacket layer is provided with and impregnates the outlet that liquid or monomer collection groove communicate, be respectively equipped with cooling water outlet and the cooling water inlet that communicates with the cooling jacket layer on the upper end sidewall of cooling jacket layer and the lower end sidewall, a thermometer or a first sensor that communicates with the inner chamber of cylindrical shell is housed on the tank body at least.
The present invention has following beneficial effect: the present invention unites two into one the vacuum pressure impregnating jar and the jar that is heating and curing; with impregnating of timber handle with the follow-up process that is heating and curing under isolated atmospheric conditions at same equipment (vacuum pressure impregnating and/or heat cure jar; be called for short process tank) the middle realization; the timber that impregnates after the processing does not need to shift out process tank; just processing can be heating and curing under the high-pressure inert gas protection; so not only can effectively avoid the environmental pollution that resin monomer volatilization brings and the problem of flammable gas explosion; also can effectively suppress in the curing process simultaneously; because of the problem that the resin monomer gasification causes timber internal resin monomer retention rate to reduce, especially created advantage for the resin monomer of recovery section gasification.Can also avoid the inhibition of oxygen in addition fully, improved the effective rate of utilization (generally bringing up to more than 90%) of resin monomer significantly from less than 70%, avoided the inhibition of oxygen, guaranteed that the polymerizing curable process carries out smoothly, the quality of wood plastic composite product especially surface quality obviously improves, wood plastic composite surfaces of tacky phenomenon can not appear, saved impregnate handle back timber shift the concerned process steps required time (account for whole impregnate and cure cycle about 30%), efficiency of equipment is than the obvious improve of prior art.Owing to do not need to adopt independent curing jar, the complete equipment floor space reduces (reducing 30% approximately), thereby reduced the investment cost of required capital construction, and solved the atmosphere polluting problem that the volatility resin monomer causes well, saved the correlative charges that needs to build in addition the TREATMENT OF VOCs device in the prior art, it is minimum that the potential safety hazard of flammable and explosive substance is reduced to, and handling safety, reliable.Therefore, the present invention is particularly useful for adopting the volatility resin monomer as the raw material of producing wood plastic composite.
Description of drawings
Fig. 1 is the main pseudosection of wood plastic composite production of the present invention with vacuum pressure impregnating and/or heat cure jar; Fig. 2 is the A-A profile of Fig. 1.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, present embodiment is made up of cylindrical shell 1, quick operating valve 29, thermometer or first sensor 10, safety valve 11, vacuum meter or second sensor 12, Pressure gauge or the 3rd sensor 13, exhaust-valve 14, inert gas pressurization mouthful valve 15, inert gas outlet valve 16, standby mouthful of valve 17, vacuum port valve 18, heat medium inlet valve 19, cooling medium outlet valve 20, cooling jacket layer 23, cooling medium inlet valve 24, heat medium outlet valve 25, chuck layer 26 and heat-insulation layer 27; The lower end barrel of described cylindrical shell 1 a close bottom one side is provided with and impregnates liquid or monomer collection groove 21, be provided with chuck layer 26 and heat-insulation layer 27 on the outer wall of cylindrical shell 1 from the inside to the outside, the described outer wall that impregnates liquid or monomer collection groove 21 is provided with cooling jacket layer 23, constitutes tank body 4 by cylindrical shell 1, chuck layer 26, heat-insulation layer 27, cooling jacket layer 23; On the jar mouth of described tank body 4 quick operating valve 29 is housed, the safety valve 11 that communicates with the inner chamber of cylindrical shell 1 is equipped with in the upper end of tank body 4, the vacuum meter or second sensor 12, Pressure gauge or the 3rd sensor 13, exhaust-valve 14, inert gas pressurization mouthful valve 15, inert gas outlet valve 16, standby mouth valve 17 and vacuum port valve 18, the heat medium inlet valve 19 that communicates with chuck layer 26 is equipped with in the upper end of tank body 4, described cooling medium outlet valve 20 is contained on the bottom face of chuck layer 26, cooling medium inlet valve 24 and the heat medium outlet valve 25 that communicates with chuck layer 26 is equipped with in the lower end of tank body 4, the bottom of described cooling jacket layer 23 is provided with and impregnates the outlet 22 that liquid or monomer collection groove 21 communicate, be respectively equipped with the cooling water outlet 2 and the cooling water inlet 3 that communicate with cooling jacket layer 23 on the upper end sidewall of cooling jacket layer 23 and the lower end sidewall, a thermometer or a first sensor 10 that communicates with the inner chamber of cylindrical shell 1 is housed on the tank body 4 at least.The involved equal outsourcing of valve, vacuum meter, Pressure gauge or sensor in the present embodiment.
In the present embodiment, to the basic demand of tank body be can high pressure resistant (2.5MPa) and vacuum-resistant (0.095MPa), the violent variations in temperature that also can bear moment high temperature (150 ℃) and cooling (10 ℃) is impacted.The heating of tank body and cooling procedure are by realizing that to chuck layer feeding steam or cold water chuck layer peripheral hardware heat-insulation layer is to guarantee operator safety and energy-conservation.
The liquid that impregnates of discharging in the timber in the curing process is subjected to heat cure, be convenient to reclaimer operation simultaneously, the lowest part of cylindrical shell be provided with a volume be 0.5L～10L and can be by the cooling of cooling jacket layer impregnate liquid or monomer collection groove, this bottom of impregnating liquid or monomer collection groove is connected with maceration extract storage tank or recovery system by magnetic valve (perhaps being convenient to the frequent closed hand-operated valve of opening), make that the resin monomer of discharging can be discharged from tank body in time from timber, also do not influence the importing of pressure impregnating processing forward direction process tank simultaneously and impregnate liquid.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1, two thermometer or first sensors 10 that communicate with the inner chamber of cylindrical shell 1 are housed on the tank body 4 of present embodiment, and described two thermometers or two first sensors 10 are separately positioned on the upper surface of tank body 4 and on the tube bottom face of cylindrical shell 1.So be provided with, can monitor the variations in temperature of diverse location in the tank body 4 at any time.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, the difference of the present embodiment and the specific embodiment one is: present embodiment also increases O-ring seal 5; Described O-ring seal 5 is contained between the jar mouth of quick operating valve 29 and tank body 4, can prevent from inert gas, the resin monomer in the tank body 4 and impregnate liquid to leak, and O-ring seal 5 requires organic solvent-resistant and oxidant.Other composition and annexation are identical with the specific embodiment one or two.
The course of work is: timber is fixed inserted on the top of the shelf in vacuum pressure impregnating and/or the heat cure jar, seal up a jar mouth, carry out vacuum and pressure impregnating and handle; then the remaining liquid that impregnates is discharged; the processing that is heating and curing again, will add inert gas protection this moment, promotes the polymerization of monomer.Open the magnetic valve (magnetic valve is communicated with outlet) that impregnates below liquid or the monomer collection groove, allow impregnating liquid and can discharging in time and collect and impregnate in the liquid storage tank of discharging in the process of being heating and curing.After treating that curing reaction finishes, close heating system, open cooling system, allow tank body cool down, at the bottom of simultaneously jar the saturated monomer vapours in also can condense to jar, collect and be discharged to and impregnate in the liquid storage tank by impregnating liquid or monomer collection groove.With inert gas in the process tank and remaining gaseous monomer mixture, reclaim and be pressed into the high-pressure inert gas storage tank by inert gas recovery system (available compression fan), realize recycling of inert gas, do not lose gaseous monomer simultaneously.
Claims (3)
1, a kind of wood plastic composite production vacuum pressure impregnating and/or heat cure jar, it comprises cylindrical shell (1), quick operating valve (29); It is characterized in that it also comprises thermometer or first sensor (10), safety valve (11), vacuum meter or second sensor (12), Pressure gauge or the 3rd sensor (13), exhaust-valve (14), inert gas pressurization mouthful valve (15), inert gas outlet valve (16), standby mouthful of valve (17), vacuum port valve (18), heat medium inlet valve (19), cooling medium outlet valve (20), cooling jacket layer (23), cooling medium inlet valve (24), heat medium outlet valve (25), chuck layer (26) and heat-insulation layer (27); Described cylindrical shell (1) is provided with near a lower end barrel of bottom one side and impregnates liquid or monomer collection groove (21), be provided with chuck layer (26) and heat-insulation layer (27) on the outer wall of cylindrical shell (1) from the inside to the outside, the described outer wall that impregnates liquid or monomer collection groove (21) is provided with cooling jacket layer (23), constitutes tank body (4) by cylindrical shell (1), chuck layer (26), heat-insulation layer (27), cooling jacket layer (23); On the jar mouth of described tank body (4) quick operating valve (29) is housed, the safety valve (11) that communicates with the inner chamber of cylindrical shell (1) is equipped with in the upper end of tank body (4), vacuum meter or second sensor (12), Pressure gauge or the 3rd sensor (13), exhaust-valve (14), inert gas pressurization mouthful valve (15), inert gas outlet valve (16), standby mouth valve (17) and vacuum port valve (18), the heat medium inlet valve (19) that communicates with chuck layer (26) is equipped with in the upper end of tank body (4), described cooling medium outlet valve (20) is contained on the bottom face of chuck layer (26), cooling medium inlet valve (24) and the heat medium outlet valve (25) that communicates with chuck layer (26) is equipped with in the lower end of tank body (4), the bottom of described cooling jacket layer (23) is provided with and impregnates the outlet (22) that liquid or monomer collection groove (21) communicate, be respectively equipped with the cooling water outlet (2) and the cooling water inlet (3) that communicate with cooling jacket layer (23) on the upper end sidewall of cooling jacket layer (23) and the lower end sidewall, a thermometer or a first sensor (10) that communicates with the inner chamber of cylindrical shell (1) is housed on the tank body (4) at least.
2, wood plastic composite production according to claim 1 vacuum pressure impregnating and/or heat cure jar, it is characterized in that being equipped with on the described tank body (4) two thermometer or first sensors (10) that communicate with the inner chamber of cylindrical shell (1), described two thermometers or two first sensors (10) be separately positioned on the upper surface of tank body (4) and the tube bottom face of cylindrical shell (1) on.
3, wood plastic composite production according to claim 1 and 2 is characterized in that with vacuum pressure impregnating and/or heat cure jar it also comprises O-ring seal (5); Described O-ring seal (5) is contained between the jar mouth of quick operating valve (29) and tank body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100726884A CN100496912C (en) | 2007-08-22 | 2007-08-22 | Vacuum pressurization impregnating and/or hot-set pot for plasticizing wood production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100726884A CN100496912C (en) | 2007-08-22 | 2007-08-22 | Vacuum pressurization impregnating and/or hot-set pot for plasticizing wood production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101112763A CN101112763A (en) | 2008-01-30 |
| CN100496912C true CN100496912C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100726884A Expired - Fee Related CN100496912C (en) | 2007-08-22 | 2007-08-22 | Vacuum pressurization impregnating and/or hot-set pot for plasticizing wood production |
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| Country | Link |
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| CN (1) | CN100496912C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626938A (en) * | 2012-05-07 | 2012-08-08 | 东北林业大学 | Vacuum pressurizing and dipping equipment for producing wood plastic composite |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745952B (en) * | 2009-12-22 | 2012-05-09 | 何光临 | Method for modifying soft wood and special equipment |
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2007
- 2007-08-22 CN CNB2007100726884A patent/CN100496912C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626938A (en) * | 2012-05-07 | 2012-08-08 | 东北林业大学 | Vacuum pressurizing and dipping equipment for producing wood plastic composite |
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| Publication number | Publication date |
|---|---|
| CN101112763A (en) | 2008-01-30 |
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Granted publication date: 20090610 Termination date: 20170822 |