CA2142202A1 - Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method - Google Patents
Method of manufacturing building boards or articles of vegetable materials and production line for realization of this methodInfo
- Publication number
- CA2142202A1 CA2142202A1 CA002142202A CA2142202A CA2142202A1 CA 2142202 A1 CA2142202 A1 CA 2142202A1 CA 002142202 A CA002142202 A CA 002142202A CA 2142202 A CA2142202 A CA 2142202A CA 2142202 A1 CA2142202 A1 CA 2142202A1
- Authority
- CA
- Canada
- Prior art keywords
- pipes
- zone
- line
- moulding
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/34—Heating or cooling presses or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/28—Moulding or pressing characterised by using extrusion presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/26—Extrusion presses; Dies therefor using press rams
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Paper (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
ABSTRACT
Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method.
The method comprises humidification of the material with saturated steam, milling, drying of the mass during preheating to thermal plasticity in process of conveying in a closed space, moulding with an extrusion press and slow cooling with preliminary seasoning in the closed insulated space.
The line comprises a bin (1), an apparatus as a steam line (2) for humidification of the material, a breaker (4), a vehicle (5) including two continuous conveyers (8, 9) arranged in housings (10, 11) the first of which is adapted forremoval of moisture and the second is adapted for drying and heating of the massto thermal plasticity, an extrusion press (24) including a heating zone, a neutral zone and a cooling zone.
Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method.
The method comprises humidification of the material with saturated steam, milling, drying of the mass during preheating to thermal plasticity in process of conveying in a closed space, moulding with an extrusion press and slow cooling with preliminary seasoning in the closed insulated space.
The line comprises a bin (1), an apparatus as a steam line (2) for humidification of the material, a breaker (4), a vehicle (5) including two continuous conveyers (8, 9) arranged in housings (10, 11) the first of which is adapted forremoval of moisture and the second is adapted for drying and heating of the massto thermal plasticity, an extrusion press (24) including a heating zone, a neutral zone and a cooling zone.
Description
~142202 METHOD OF MANU~ACTUI~ING BUILDING BOARDS OR ARTICLES
OF VEGETAI~LE ~ATERIAI,S AND PRODUCTION LINE FOR
REALIZATION OF THIS METHOD
., FIELD OF THE INVENTION
Tlle present invelltioll relates to construction, namely, to a method of manufacturillg building boards or articles of vegetable materials and a production line for realization of this method.
The hlventioll will filld broad application in making of a furniture in the woodworking industry.
DESCRIPTION OFTHE PRIORART
The teclmology of wood-particle board manufacture is known (N. G.
Romanov, Production Process of Wood Plastics and Boards, 1965, publishing office Lesnaya Promyslllemlost, Moscow, p. ~47-449), tllis techllology includlesrnilling of wood, drying a ground material, preparation of a binding agent and 15 application it on surfaces of wood particles as well moulding.
A wood is milled witll llammer breaker, cam crusher and so Oll, thereafter the gro-md material is dried in pneulllatic, drum, colltinuous-belt or other driers.
A binding agellt is prepared hl tlle form of urea formaldehyde, phenol-formaldehyde and other resins. Continuous or batcll-operated n~ixers, for example, drum and 20 paddle mixer,are used for n~ixing of chips and binding resins together. Mixedwith the binder wood partlcles are moulded with continuous caterpillar presses or batch-operated hydraulic multiopening presses.
The said metllod of mallufacturillg wood-particle boards has the following I
drawback. Applied bindillg resins pollute an enviromllent witll toxic gases both25 during moulding and during use of tlle articles.
An extrusion metllod of mallufacturillg wood-particle boards (SU, A, ! I
10216310) is well hlown. Tl~is method consists in feeding resin coated wood particles into a press receiving bin. Tllen particles are fed into a moulding channel formed by heating plates and void-formers. Moulded wood-particle board removes 30 a press challllel as a conthluous band under the influence of punch pressure and I I
heat of heatillg plates and external surfaces of void-formers. ¦ ` ~
However, use of resins causes pollution of an envirollment witll toxic formaldellyde both during mouldillg and during use of finislled articles. A method of manufacturillg building boards or articles of vegetable materials without addition 35 of binding agents (~. N. Minill, Production of Articles and Materials of Ground .. ~ .. ~... .. . .
~` 2142202 Wood by Moulding, 1960, BSSR Goverlunelltal Publishing Office, Minsk, p. 123 -127) is hlown. Tlle method COIlSiStS ill llumidification of a source material and trallsmission of awaste into cllipphlg macllines for milling. Ground waste is sized, hereupon coarse portiolls are fed for repeated milling and the remaining 5 wood pulp is reseived hlto a bin. The mass is fed automatically from a bin into driers(pneumogas, drum and otller driers) witll a dosing feeder. Dry material isreceived illtO other bin, from WhiCIl it iS uniformly loaded with a dosing feeder into chaill pulsatiDg conveyer placed dies al~d tlle material is fed to a single daylight l~ydraulic press for preheatillg to thermal fluidity. After moulding material preheating 10 in high-frequellcy field the dies witll compacted material are fed with the same conveyer onto a chargillg device of a hydraulic multiopening press. Cooling, opening press plates and unloadillg of the dies with finished articles are carried out afler moulding. However, tl~is process is laborious and expensive due to large energy consumption. Stage by-stage operations and moulding with a multiopening 15 press cause low process productivity.
DISCLOSURE OF THE INVENTION
, An object of the invention is a method of manufacturing building boards or other articles of vegetable materials as well as a production line of this method ensuaring ecological cleanlilless of building boards or other articles with improved 20 physical-mechanical characteristics together with higll manufacturing productivity due to coincidence of operations and usage of an extrusion moulding without application of bindhlg resins and because of rational design in ordel to make this operations.
An object of the invelltioll is tlle method of manufacturing building boards 25 ol othel articles of vegetable materials including: milling, drying, conveying of ground mass, preheating of the ground mass in a~close space to thermal plasticity and moulding followed by cooling of tlle article,according to the invention drying is carried out during ground mass preheatillg to thermal plasticity, said preheating being executed during conveyillg and moulding is performed with an extrusion 30 press.
Simultaneous ground mass dryh~g and preheating to thermal plasticity during conveying ensures sllort-term preparation of a moulding material, namely, bdr~ging it to maximum fluidity witll formation of resills.
lt reduces tlle term of fultller moulding and ensures application of contirluous35 extrusion moulding witllout use of pllenol-formaldellyde and other reshls because manufacturing productivity of ecologically clean building boards or other articles with improved pllysical-mecl~allical charactoristics is increased.
,. ~ - ' ':
... ,., ,~ ~ .. , :: ` ' ~` 2142202 Preferably, llumidificatioll of vegetable materials is carried out by tlle satwated steam. lt facilitates milling of tlle material in a breaker and reduces energy consumptio~
Preferably,rarefaclion is created in a close space during ground material S convey;llg. It ensures moisture and volatile gases removal from the matetial in the llermetic space. TlliS phellolllelloll promotes all sizing agent conservation formed during material heatillg, facilitatil~g to a process of mouldhlg thereafler.
Preferably, tlle finislled article is seasoned before cooling in a close space for removal of interllal stresses, it hlcreases a strengtll and reduces water absorption 10 oftlle finished articles.
Otner object of tlle invelltion is a production line for manufacturing of building boards or other articles of vegetable materials which consists of a bin, an apparatus for llumidification of a material, at least one breaker for milling of a material, a vellicle, a device for mouldillg, tlle vehicle includes two continuous 15 conveyers, each of tllem is arranged in a l10US~ tlle llousing of the first continuous conveyer is provided witll a chargillg trougll colmected with a breaker and a cone portion havillg some openings Oll its surface and a lesser base of the cone is connected witll a receiving apparatus of the llousing of the second continuous conveyer, said llousing is provided witll double ilmer and outer walls; between 20 these walls there is aspace filled with heat-transfer agent as well with pipes fo~
moisture and volatile gases removal and witll a pipe for unloading of the mass comlected with a mouldillg device as an extrusion press containing heating plates forming a heatillg zone, a collector with void-formers consisting of outer and inner tubes for heat-trallsfer agent supply and a punch.
l~liS constructive embodiment of the vellicle ensures continuity of drying and preheating during conveyillg in tlle close space and it promotes increase ofprocess productivity and ensures mouldillg material preparation, namely, state of its maximum fluidity witll tlle extrusion press without addition of toxic synthetic resins polluting an enviromllent.
~ Preferably, the apparatus for llulllidification of the material is carried out as a steam line. It facililates subse~uently millillg of the matedal with a breaker and roducos onorgy consumption.
Preferably, the steam line is arranged between the bin and the breaker colmected witll the vehicle by means of a pipe-line and a cyclone.lt will ensure35 removal of a free steam before drying in the vehicle and promote reducing of energy consumption.
Preferably, the steam line is placed witllin tlle bin. It simplifies production line construction to a great extent.
Preferably,vehicle pipes for removal of moisture and volatile gases are 1, provided witll an apparatus for creation of rarefaction at the gas outlet. This promotes erfective reuloval of moisture and volatile gases from the ground material with conservation of hermetic sealh~g and all sizing agents, being formed duringheating of mass whicll agents facititate process of moulding.
S Preferably, heating plates of the extrusion press are provided with a cooling zone performed with challl1els for a coolant and placed af~er the heating zono, a neutral zone being placed between the plate heating zone and the cooUng zone.
Channoîs of the neutral zone are filled witll insulator and void-formers additionaly are provided witll al1 interior pipe for a heat-transfer agent and external and 10 internal pipes for acoolant,the last pipes befl~g placed in a space of interior pipes for supply of heat-transfer agent of the heating zone, and are insulated from the latter with insulator,and a collector additionaly is provided with pipes for coolant insulated from pipes for heat-trallsfer agent with insulator.Length of the void-former external coolant pipe must be larger than length of the heat-transfer agent 15 pipes by length of the neutral zone and a cooling zone of the heatinB plates.This constructive embodflllellt of extrusion press elements permits afler lleating of the moulding material to 17--225OC to ensure seasoning of formed articb in the neutral zolu for removal of internal stresses with subsequent slowcooUng to the temperature lower than 100C in the close space. It promotes 20 increase of arlicle physical-mecllanical characteristics. Seasoning time in the neutral zone depends on the type of a source vegetable matedal.
The invention is explained further by detailed description of its embodiment specific version and appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
2S Fig. I represents a diagram of a production Une for manufacturing building boards ol other articles of vegetable materials;
Fig. 2 also represents a diagram of a production Une for manufacturing building boards or other articles of vegetable matedals;
Fig. 3 represents a vehicle of a production Une in longitudinal section;
Fig. 4 represents construction of an oxtrusion press in longitudinal section.
30 . ::
DESCRIPTION OF THE PREFERRED EMBODIMENT
I ~
The method of manufacturilu~ building boards or other articles of ~egetable I ` ` ; `
materials according to the inventiol1 comprises humidification of a sourco matodal ¦
with saturated steam at temperatures between 170 and 200C, miîling, drying of a 3S groulld mnss carried out durh~g prohoatil)g it to thermal fluidity and during ¦ -".'. ,..':
- 1 ''```''`" :'` '``"`
'~142202 `
, .
collveyhlg in a closed space, niouldillg witll an extrusion press; in addition, rarefaction is created durhlg conveyillg in tlle closed space and finished articlc is seasoned before cooling in the insulated closed space for removal of internal stresses.
The production Ihle for mallufacturing building boards or other articles of 5 vegetable materials comprises: a bin 1, an apparatus for humidification of a material accomplished as a steam line 2 and placed interior to a chamber 3 mounted between the bhl I and a breaker 4 (fig. 1) or interior to the bin I connected immediately with the breaker 4 (fig. 2). The breaker 4 is colunected with a vehicle 5 by means of a pipe-line 6 and acyclone 7 (fig.l) or directly with the vehicle 5 10 (fig. 2). The vehicle 5 comprises two continuous conveyers 8, 9, each of thembeing arranged in a housing 10, I l, corre~spondingly. Tlle housing 10 is provided with a chargillg trough 12 colulected with the cyclone 7 (fig. 1) or directly with the breaker 4 (fig. 2). Also the housillg 10 is provided with a cone portion 13 having opelungs 14 and leæer base of the cone 13 is connected with a charging trough 1515 of the housing 11. Also the cone portion 13 is connected with a collector 16 mounted on the outside of the housing 10. The housing 11 is provided with doubleinner and outer walls 17, 18, correspondillgly; there is a space l9 between these walls filled with neat-trallsfer agent.Also the housillg 11 has pipes 20 for removal moisture and volatile gases,these pipes providing with an apparatus 21 for creating 20 rarefaction at the outlet of gases,and a pipe 22 for unloading of mass,which the pipe 22 is colmected with a doshlg Ullit 23 of an extrusion press 24.The extrusion press 24 comprises: heatillg plates 25, side quides 26, a collector 27 with void-formers 28 and a punch 29. Tlle heatillg plates 25 are provided with channels 30for heat-trallsfer agent whicll challllels form a heatily5 zone, and channels 31 for 25 coolant fonning a cooling zone of the plates 25 a neutral zone being placed between the neating zone and the cooling zone of the pîates 25, as well charmels32 filled with insulator.The void-fomler 28 COllSiStS of interior pipes 33 and 34 and extedor pipe 35 for the heat-trallsfer agent as well internaî a1ld external pipes 36, 37, correspondillgly for coolant placed inside pipe 33 and insulated from tlN
latter by means of hlsulator 38.The collector 27 consists of pipes 39,40 for theheat-transfer agent and pipes 41,42 for the coolant separated from the pipes 39,40 by means of insulator 43. The housillg 22 is provided with extemal insulator 44.
The production line for manufacturing building boards or other articles of vegetable materials operates as follows.
3S A source vegetable material, for example, ground wood, awnchafE, club rush, etc, is loaded into tlle bin I from whicll the material is fed into the chamber 3 for humidification witll steam from the stealll line 2 at temporatures betwecn120 and 170C. Humidified material is fed into the breaker 4 for millillg~ Theground m~ss is fed witll the pipeline into the cyclone 7 for separation of steam and ~ . i ~ i . . .
`! ~
~14220~ ~
then the mass is fed into the cllarging trough 12 of the vehicle 5 (fiB- 1). In the second version of embodiment (Gg. 2) humidification is took place in the bin I at tempetatures between lOOo and 170C witll steam from the stoam lino 2 placod in the bin 1. Separation of steam from the ground mass is occured in tho bin too.
S Afler humidification the mass is fed into the breaker 4 for milling and thon tho mass is received imlllediately into the charging trough 12 of tho vehiclo 5. From the charging trough 12 tlle mass is came onto the continuous conveyer 8 which moves it into the cone portion 13 of the lloushlg 10. Moisturo is removod from tho mass into the collector 16 througll tlle openillgs 14. The mass is moved with the I
10 continuous conveyer 9 within the housing 11 from the cone portion 13 which prevents hit of moisture into the mass fed into the charging trough 15 of the housing 11. l The mass is heated to temperature 120-170C with the heat-transfer agent, ;
as a rosult drying of the material is carried out with romoval of moisturo and 15 volatilo gases througll pipes 20; since rarefaction is created with the apparatus 21 at the outlet from the pipes 20 and herllletic sealing is maintained in tho housing , Il these circumstances contribute to maintain of all sizing agents which is formed , ~s a result soflening of the mass during heathlg with the lleat-transfer agent. The soflened mass is fed through the pipe 22 into the dosing unit 23 of the extrusion 20 press 24. The mass is fed by means of the dosing Imit 23 along the side quides 26 into aforming chamlel formed by the heating plates 25 and extedor pipes 35 of the void-formed 28. A moulded board or other article goes out from the channd oftho press 24 as a continuous band under tho influence of pressure created by punch 29 and heat ftom the extedor pipes 35 heated with the heat-transfor agent which 2S is fed thm~i the collector 27 into the space between extodor pipo 35 and intodor pipes 33,34 of the void-former 28.The moulded article is fed into the neutral ,l zone in which heating and rapid cooling aro absent and owing to tl~is fact romo~al i of hlternal stresses is occured in tho article. Then. the article is recoived into the cooling zone for gradual coolhlg during its motion to temperature lower than I
30 100C with the coolant fed througll the pipe 37 of the collector 27 into the space between the external pipe 37 and internal pipe 36.
INDUSTRIAL APPLICABILITY
The proposod invention concemed to method of manufactu~ing building boards or other articles of vegetablo mateAals and production lino for roalization 35 of this mothod can find broad application in tho woodworking industry and in ` , other branches of hldustry for manufacturillg building articlos with omplogmont of chips, wood shavillgs, bark, club rush, awncbaff and othor vegotablo materials without ndding toxic bindillg agents. By use of the invention it can obtain cheap ecologically clean material with lligh physical-lllecllallical properties.
., , .
I
~I
OF VEGETAI~LE ~ATERIAI,S AND PRODUCTION LINE FOR
REALIZATION OF THIS METHOD
., FIELD OF THE INVENTION
Tlle present invelltioll relates to construction, namely, to a method of manufacturillg building boards or articles of vegetable materials and a production line for realization of this method.
The hlventioll will filld broad application in making of a furniture in the woodworking industry.
DESCRIPTION OFTHE PRIORART
The teclmology of wood-particle board manufacture is known (N. G.
Romanov, Production Process of Wood Plastics and Boards, 1965, publishing office Lesnaya Promyslllemlost, Moscow, p. ~47-449), tllis techllology includlesrnilling of wood, drying a ground material, preparation of a binding agent and 15 application it on surfaces of wood particles as well moulding.
A wood is milled witll llammer breaker, cam crusher and so Oll, thereafter the gro-md material is dried in pneulllatic, drum, colltinuous-belt or other driers.
A binding agellt is prepared hl tlle form of urea formaldehyde, phenol-formaldehyde and other resins. Continuous or batcll-operated n~ixers, for example, drum and 20 paddle mixer,are used for n~ixing of chips and binding resins together. Mixedwith the binder wood partlcles are moulded with continuous caterpillar presses or batch-operated hydraulic multiopening presses.
The said metllod of mallufacturillg wood-particle boards has the following I
drawback. Applied bindillg resins pollute an enviromllent witll toxic gases both25 during moulding and during use of tlle articles.
An extrusion metllod of mallufacturillg wood-particle boards (SU, A, ! I
10216310) is well hlown. Tl~is method consists in feeding resin coated wood particles into a press receiving bin. Tllen particles are fed into a moulding channel formed by heating plates and void-formers. Moulded wood-particle board removes 30 a press challllel as a conthluous band under the influence of punch pressure and I I
heat of heatillg plates and external surfaces of void-formers. ¦ ` ~
However, use of resins causes pollution of an envirollment witll toxic formaldellyde both during mouldillg and during use of finislled articles. A method of manufacturillg building boards or articles of vegetable materials without addition 35 of binding agents (~. N. Minill, Production of Articles and Materials of Ground .. ~ .. ~... .. . .
~` 2142202 Wood by Moulding, 1960, BSSR Goverlunelltal Publishing Office, Minsk, p. 123 -127) is hlown. Tlle method COIlSiStS ill llumidification of a source material and trallsmission of awaste into cllipphlg macllines for milling. Ground waste is sized, hereupon coarse portiolls are fed for repeated milling and the remaining 5 wood pulp is reseived hlto a bin. The mass is fed automatically from a bin into driers(pneumogas, drum and otller driers) witll a dosing feeder. Dry material isreceived illtO other bin, from WhiCIl it iS uniformly loaded with a dosing feeder into chaill pulsatiDg conveyer placed dies al~d tlle material is fed to a single daylight l~ydraulic press for preheatillg to thermal fluidity. After moulding material preheating 10 in high-frequellcy field the dies witll compacted material are fed with the same conveyer onto a chargillg device of a hydraulic multiopening press. Cooling, opening press plates and unloadillg of the dies with finished articles are carried out afler moulding. However, tl~is process is laborious and expensive due to large energy consumption. Stage by-stage operations and moulding with a multiopening 15 press cause low process productivity.
DISCLOSURE OF THE INVENTION
, An object of the invention is a method of manufacturing building boards or other articles of vegetable materials as well as a production line of this method ensuaring ecological cleanlilless of building boards or other articles with improved 20 physical-mechanical characteristics together with higll manufacturing productivity due to coincidence of operations and usage of an extrusion moulding without application of bindhlg resins and because of rational design in ordel to make this operations.
An object of the invelltioll is tlle method of manufacturing building boards 25 ol othel articles of vegetable materials including: milling, drying, conveying of ground mass, preheating of the ground mass in a~close space to thermal plasticity and moulding followed by cooling of tlle article,according to the invention drying is carried out during ground mass preheatillg to thermal plasticity, said preheating being executed during conveyillg and moulding is performed with an extrusion 30 press.
Simultaneous ground mass dryh~g and preheating to thermal plasticity during conveying ensures sllort-term preparation of a moulding material, namely, bdr~ging it to maximum fluidity witll formation of resills.
lt reduces tlle term of fultller moulding and ensures application of contirluous35 extrusion moulding witllout use of pllenol-formaldellyde and other reshls because manufacturing productivity of ecologically clean building boards or other articles with improved pllysical-mecl~allical charactoristics is increased.
,. ~ - ' ':
... ,., ,~ ~ .. , :: ` ' ~` 2142202 Preferably, llumidificatioll of vegetable materials is carried out by tlle satwated steam. lt facilitates milling of tlle material in a breaker and reduces energy consumptio~
Preferably,rarefaclion is created in a close space during ground material S convey;llg. It ensures moisture and volatile gases removal from the matetial in the llermetic space. TlliS phellolllelloll promotes all sizing agent conservation formed during material heatillg, facilitatil~g to a process of mouldhlg thereafler.
Preferably, tlle finislled article is seasoned before cooling in a close space for removal of interllal stresses, it hlcreases a strengtll and reduces water absorption 10 oftlle finished articles.
Otner object of tlle invelltion is a production line for manufacturing of building boards or other articles of vegetable materials which consists of a bin, an apparatus for llumidification of a material, at least one breaker for milling of a material, a vellicle, a device for mouldillg, tlle vehicle includes two continuous 15 conveyers, each of tllem is arranged in a l10US~ tlle llousing of the first continuous conveyer is provided witll a chargillg trougll colmected with a breaker and a cone portion havillg some openings Oll its surface and a lesser base of the cone is connected witll a receiving apparatus of the llousing of the second continuous conveyer, said llousing is provided witll double ilmer and outer walls; between 20 these walls there is aspace filled with heat-transfer agent as well with pipes fo~
moisture and volatile gases removal and witll a pipe for unloading of the mass comlected with a mouldillg device as an extrusion press containing heating plates forming a heatillg zone, a collector with void-formers consisting of outer and inner tubes for heat-trallsfer agent supply and a punch.
l~liS constructive embodiment of the vellicle ensures continuity of drying and preheating during conveyillg in tlle close space and it promotes increase ofprocess productivity and ensures mouldillg material preparation, namely, state of its maximum fluidity witll tlle extrusion press without addition of toxic synthetic resins polluting an enviromllent.
~ Preferably, the apparatus for llulllidification of the material is carried out as a steam line. It facililates subse~uently millillg of the matedal with a breaker and roducos onorgy consumption.
Preferably, the steam line is arranged between the bin and the breaker colmected witll the vehicle by means of a pipe-line and a cyclone.lt will ensure35 removal of a free steam before drying in the vehicle and promote reducing of energy consumption.
Preferably, the steam line is placed witllin tlle bin. It simplifies production line construction to a great extent.
Preferably,vehicle pipes for removal of moisture and volatile gases are 1, provided witll an apparatus for creation of rarefaction at the gas outlet. This promotes erfective reuloval of moisture and volatile gases from the ground material with conservation of hermetic sealh~g and all sizing agents, being formed duringheating of mass whicll agents facititate process of moulding.
S Preferably, heating plates of the extrusion press are provided with a cooling zone performed with challl1els for a coolant and placed af~er the heating zono, a neutral zone being placed between the plate heating zone and the cooUng zone.
Channoîs of the neutral zone are filled witll insulator and void-formers additionaly are provided witll al1 interior pipe for a heat-transfer agent and external and 10 internal pipes for acoolant,the last pipes befl~g placed in a space of interior pipes for supply of heat-transfer agent of the heating zone, and are insulated from the latter with insulator,and a collector additionaly is provided with pipes for coolant insulated from pipes for heat-trallsfer agent with insulator.Length of the void-former external coolant pipe must be larger than length of the heat-transfer agent 15 pipes by length of the neutral zone and a cooling zone of the heatinB plates.This constructive embodflllellt of extrusion press elements permits afler lleating of the moulding material to 17--225OC to ensure seasoning of formed articb in the neutral zolu for removal of internal stresses with subsequent slowcooUng to the temperature lower than 100C in the close space. It promotes 20 increase of arlicle physical-mecllanical characteristics. Seasoning time in the neutral zone depends on the type of a source vegetable matedal.
The invention is explained further by detailed description of its embodiment specific version and appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
2S Fig. I represents a diagram of a production Une for manufacturing building boards ol other articles of vegetable materials;
Fig. 2 also represents a diagram of a production Une for manufacturing building boards or other articles of vegetable matedals;
Fig. 3 represents a vehicle of a production Une in longitudinal section;
Fig. 4 represents construction of an oxtrusion press in longitudinal section.
30 . ::
DESCRIPTION OF THE PREFERRED EMBODIMENT
I ~
The method of manufacturilu~ building boards or other articles of ~egetable I ` ` ; `
materials according to the inventiol1 comprises humidification of a sourco matodal ¦
with saturated steam at temperatures between 170 and 200C, miîling, drying of a 3S groulld mnss carried out durh~g prohoatil)g it to thermal fluidity and during ¦ -".'. ,..':
- 1 ''```''`" :'` '``"`
'~142202 `
, .
collveyhlg in a closed space, niouldillg witll an extrusion press; in addition, rarefaction is created durhlg conveyillg in tlle closed space and finished articlc is seasoned before cooling in the insulated closed space for removal of internal stresses.
The production Ihle for mallufacturing building boards or other articles of 5 vegetable materials comprises: a bin 1, an apparatus for humidification of a material accomplished as a steam line 2 and placed interior to a chamber 3 mounted between the bhl I and a breaker 4 (fig. 1) or interior to the bin I connected immediately with the breaker 4 (fig. 2). The breaker 4 is colunected with a vehicle 5 by means of a pipe-line 6 and acyclone 7 (fig.l) or directly with the vehicle 5 10 (fig. 2). The vehicle 5 comprises two continuous conveyers 8, 9, each of thembeing arranged in a housing 10, I l, corre~spondingly. Tlle housing 10 is provided with a chargillg trough 12 colulected with the cyclone 7 (fig. 1) or directly with the breaker 4 (fig. 2). Also the housillg 10 is provided with a cone portion 13 having opelungs 14 and leæer base of the cone 13 is connected with a charging trough 1515 of the housing 11. Also the cone portion 13 is connected with a collector 16 mounted on the outside of the housing 10. The housing 11 is provided with doubleinner and outer walls 17, 18, correspondillgly; there is a space l9 between these walls filled with neat-trallsfer agent.Also the housillg 11 has pipes 20 for removal moisture and volatile gases,these pipes providing with an apparatus 21 for creating 20 rarefaction at the outlet of gases,and a pipe 22 for unloading of mass,which the pipe 22 is colmected with a doshlg Ullit 23 of an extrusion press 24.The extrusion press 24 comprises: heatillg plates 25, side quides 26, a collector 27 with void-formers 28 and a punch 29. Tlle heatillg plates 25 are provided with channels 30for heat-trallsfer agent whicll challllels form a heatily5 zone, and channels 31 for 25 coolant fonning a cooling zone of the plates 25 a neutral zone being placed between the neating zone and the cooling zone of the pîates 25, as well charmels32 filled with insulator.The void-fomler 28 COllSiStS of interior pipes 33 and 34 and extedor pipe 35 for the heat-trallsfer agent as well internaî a1ld external pipes 36, 37, correspondillgly for coolant placed inside pipe 33 and insulated from tlN
latter by means of hlsulator 38.The collector 27 consists of pipes 39,40 for theheat-transfer agent and pipes 41,42 for the coolant separated from the pipes 39,40 by means of insulator 43. The housillg 22 is provided with extemal insulator 44.
The production line for manufacturing building boards or other articles of vegetable materials operates as follows.
3S A source vegetable material, for example, ground wood, awnchafE, club rush, etc, is loaded into tlle bin I from whicll the material is fed into the chamber 3 for humidification witll steam from the stealll line 2 at temporatures betwecn120 and 170C. Humidified material is fed into the breaker 4 for millillg~ Theground m~ss is fed witll the pipeline into the cyclone 7 for separation of steam and ~ . i ~ i . . .
`! ~
~14220~ ~
then the mass is fed into the cllarging trough 12 of the vehicle 5 (fiB- 1). In the second version of embodiment (Gg. 2) humidification is took place in the bin I at tempetatures between lOOo and 170C witll steam from the stoam lino 2 placod in the bin 1. Separation of steam from the ground mass is occured in tho bin too.
S Afler humidification the mass is fed into the breaker 4 for milling and thon tho mass is received imlllediately into the charging trough 12 of tho vehiclo 5. From the charging trough 12 tlle mass is came onto the continuous conveyer 8 which moves it into the cone portion 13 of the lloushlg 10. Moisturo is removod from tho mass into the collector 16 througll tlle openillgs 14. The mass is moved with the I
10 continuous conveyer 9 within the housing 11 from the cone portion 13 which prevents hit of moisture into the mass fed into the charging trough 15 of the housing 11. l The mass is heated to temperature 120-170C with the heat-transfer agent, ;
as a rosult drying of the material is carried out with romoval of moisturo and 15 volatilo gases througll pipes 20; since rarefaction is created with the apparatus 21 at the outlet from the pipes 20 and herllletic sealing is maintained in tho housing , Il these circumstances contribute to maintain of all sizing agents which is formed , ~s a result soflening of the mass during heathlg with the lleat-transfer agent. The soflened mass is fed through the pipe 22 into the dosing unit 23 of the extrusion 20 press 24. The mass is fed by means of the dosing Imit 23 along the side quides 26 into aforming chamlel formed by the heating plates 25 and extedor pipes 35 of the void-formed 28. A moulded board or other article goes out from the channd oftho press 24 as a continuous band under tho influence of pressure created by punch 29 and heat ftom the extedor pipes 35 heated with the heat-transfor agent which 2S is fed thm~i the collector 27 into the space between extodor pipo 35 and intodor pipes 33,34 of the void-former 28.The moulded article is fed into the neutral ,l zone in which heating and rapid cooling aro absent and owing to tl~is fact romo~al i of hlternal stresses is occured in tho article. Then. the article is recoived into the cooling zone for gradual coolhlg during its motion to temperature lower than I
30 100C with the coolant fed througll the pipe 37 of the collector 27 into the space between the external pipe 37 and internal pipe 36.
INDUSTRIAL APPLICABILITY
The proposod invention concemed to method of manufactu~ing building boards or other articles of vegetablo mateAals and production lino for roalization 35 of this mothod can find broad application in tho woodworking industry and in ` , other branches of hldustry for manufacturillg building articlos with omplogmont of chips, wood shavillgs, bark, club rush, awncbaff and othor vegotablo materials without ndding toxic bindillg agents. By use of the invention it can obtain cheap ecologically clean material with lligh physical-lllecllallical properties.
., , .
I
~I
Claims (9)
1. A method of manufacturing building boards or articles of vegetable materials comprising humidification of source material, milling, drying, conveying of groundmass, preheating said ground mass in closed space to thermal plasticity and moulding with subsequent cooling, characterized in that drying of said humidified material is executed during preheating of the ground mass to thermal plasticity which preheating is carried out during conveying and moulding of said mass is performed with extrusion press.
2. The method accoriding to claim 1, characterized in that humidification of vegetable material is carried out with saturated steam.
3. The method according to claim 1, characterized in that rarefaction is created in said closed space during conveying of said ground mass.
4. The method according to claim 1, characterized in that finished article is seasoned after heating during moulding before cooling in the closed space forremoval of internal stresses.
5. A production line for realization of the method accoding to claim 1, said line comprising a bin (1), an apparatus (2) for humidification of the material, at least one breaker (4), a vehicle (5) for ground mass, a device for moulding, characterized in that said vehicle (5) includes two continuous conveyers (8, 9) each of them is arranged in a housing (10, 11), the housing (10) of the continuous conveyer (8) being provided with a charging trough (12) connected with the breaker (4) and cone portion (13) having openings (14) on its surface, and lesser base of the cone is connected with a charging trough (15) of the housing (11) of the second continuous conveyer (9), said housing (11) being provided with double, inner and outer walls (17, 18, correspondingly) and there is a space (19) between these walls filled with heat-transfer agent as well pipes (20) for removal of moisture and volatile gases and pipe (22) for unloading of said mass connected with a moulding device performed as an extrusion press (24) comprising heated plates (25) forming a heating zone, a collector (27) with void-formers (28) consisting of interior and exterior pipes (33,34,35) for heat-transfer agent,and apunch.
6. The line according to claim 5, characterized in that said apparatus (2) for humidification of the material is carried out as a steam line.
7. The line according to claim 5, characterized in that said steam line (2) is placed between said bin (1) and said breaker (4) connected with the vehicle (5) by means of a pipe-line (6) and acyclone (7).
8. The line according to claim 5, characterized in that said steam line (2) is placed within said bin (1).
9.The line according to claim 5, characterized in that said pipes (20) for removal moisture and volatile gases of the housing (II) of the vehicle (5) are provided with an apparatus (21) for creating rarefaction at the outlet of gases.10. The line according to claim 5, characterized in that said heating plates (25) of the extrusion press (24) are provided with a cooling zone made with channels (31) for a coolant and placed after said heating zone of the plates (25) and a neutral zone is placed between said heating zone of the plates (25) and said cooling zone, channels (32) of said neutral zone are filled with insulator, void-formers (28) additionally being provided with external pipe. (37) and internal pipes (36) for the coolant which pipes are placed within interior pipe (33) for heat-transfer agent of the heating zone and insulated from the latter by insulator (38),and the collector (27) also additionally is provided with pipes (41,42) for the coolant,these pipes (41,42) being separated from pipes (39,40) for the heat-transfer agent by insulator (43),and length of said internal pipe (36) for the coolant of the void-former (28) larger than length of the interior pipe (34) for the heat-transfer agent by length of the neutral zone and cooling zone of the heating plates (25).
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19950904340 EP0664191A4 (en) | 1993-06-23 | 1993-06-23 | Process for manufacturing building panels or other articles from plant matter and a production line for carrying out the said process. |
| PCT/BY1993/000001 WO1995000304A1 (en) | 1993-06-23 | 1993-06-23 | Process for manufacturing building panels or other articles from plant matter and a production line for carrying out the said process |
| AU49374/93A AU672820B2 (en) | 1993-06-23 | 1993-06-23 | Process for manufacturing building panels or other articles from plant matter and a production line for carrying out thesaid process |
| JP7502259A JPH08500552A (en) | 1993-06-23 | 1993-06-23 | Method for manufacturing article made of building board or plant material and production line for carrying out the method |
| CA002142202A CA2142202A1 (en) | 1993-06-23 | 1993-06-23 | Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method |
| CN95100292.9A CN1127185A (en) | 1993-06-23 | 1995-01-20 | Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method |
| FI950523A FI950523A0 (en) | 1993-06-23 | 1995-02-07 | A method of making building boards or commodities from plant materials and a production line for implementing the method |
| NO950588A NO950588L (en) | 1993-06-23 | 1995-02-17 | Process for manufacturing building panels or articles from vegetable materials, as well as production line for carrying out the process |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/BY1993/000001 WO1995000304A1 (en) | 1993-06-23 | 1993-06-23 | Process for manufacturing building panels or other articles from plant matter and a production line for carrying out the said process |
| CA002142202A CA2142202A1 (en) | 1993-06-23 | 1993-06-23 | Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method |
| CN95100292.9A CN1127185A (en) | 1993-06-23 | 1995-01-20 | Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2142202A1 true CA2142202A1 (en) | 1995-01-05 |
Family
ID=27160217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002142202A Abandoned CA2142202A1 (en) | 1993-06-23 | 1993-06-23 | Method of manufacturing building boards or articles of vegetable materials and production line for realization of this method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0664191A4 (en) |
| CN (1) | CN1127185A (en) |
| CA (1) | CA2142202A1 (en) |
| NO (1) | NO950588L (en) |
| WO (1) | WO1995000304A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL184356B1 (en) | 1996-04-12 | 2002-10-31 | Marlit Ltd | Method of obtaining composite lignocellulose materials |
| US5855832A (en) * | 1996-06-27 | 1999-01-05 | Clausi; Robert N. | Method of molding powdered plant fiber into high density materials |
| GB9625068D0 (en) * | 1996-12-02 | 1997-01-22 | Marlit Ltd | Method for production of lignocellulosic composite materials |
| DE102008000945A1 (en) * | 2008-04-02 | 2009-10-08 | Bühler AG | Process for the production of pressed products from fibrous raw materials |
| WO2013101658A1 (en) * | 2011-12-29 | 2013-07-04 | Eastman Chemical Company | Wood treatment method and apparatus employing bundle lift system |
| CN106003354A (en) * | 2016-05-13 | 2016-10-12 | 安徽瑞丝环保能源有限公司 | Crop straw compressed panel system |
| CN107088934B (en) * | 2017-05-19 | 2022-08-19 | 颍上县亚森木业有限责任公司 | Board discharging device of plywood hot press |
| RU2763720C1 (en) * | 2021-05-13 | 2021-12-30 | Бранимир Плазинич | Installation for the production of building boards from waste or multilayer partially polymeric materials and method of production |
| CN113246251B (en) * | 2021-05-19 | 2024-08-20 | 广西力源宝科技有限公司 | Eucalyptus bark recycling processing system and processing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1311940A1 (en) * | 1985-12-04 | 1987-05-23 | Белорусский технологический институт им.С.М.Кирова | Extrusion press for making multivoid particle-board |
| DE3931593A1 (en) * | 1989-09-22 | 1991-04-04 | Klaus Dipl Ing Jourdan | Mfg. extruded products out of wood chips, fibres etc. - by homogenising product in mixer, material fed into one mixer end and extracted from mixer end |
| DE4018102A1 (en) * | 1990-06-06 | 1991-12-12 | Valentin Schollmayer | DEVICE FOR EXTRUDING PLANT SMALL PARTS MIXED WITH BINDERS |
-
1993
- 1993-06-23 EP EP19950904340 patent/EP0664191A4/en not_active Withdrawn
- 1993-06-23 CA CA002142202A patent/CA2142202A1/en not_active Abandoned
- 1993-06-23 WO PCT/BY1993/000001 patent/WO1995000304A1/en not_active Application Discontinuation
-
1995
- 1995-01-20 CN CN95100292.9A patent/CN1127185A/en active Pending
- 1995-02-17 NO NO950588A patent/NO950588L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995000304A1 (en) | 1995-01-05 |
| EP0664191A4 (en) | 1995-10-17 |
| NO950588L (en) | 1995-02-22 |
| NO950588D0 (en) | 1995-02-17 |
| CN1127185A (en) | 1996-07-24 |
| EP0664191A1 (en) | 1995-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |