CN1205005C - Method and device for dry gluing of fibrous and chip-like slag - Google Patents
Method and device for dry gluing of fibrous and chip-like slag Download PDFInfo
- Publication number
- CN1205005C CN1205005C CN 01812441 CN01812441A CN1205005C CN 1205005 C CN1205005 C CN 1205005C CN 01812441 CN01812441 CN 01812441 CN 01812441 A CN01812441 A CN 01812441A CN 1205005 C CN1205005 C CN 1205005C
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- CN
- China
- Prior art keywords
- hollow body
- air
- slag
- conveying air
- mixing device
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- Expired - Fee Related
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- 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
- B27N1/02—Mixing the material with binding agent
- B27N1/0218—Mixing the material with binding agent in rotating drums
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method and a device for the dry gluing of fibrous and chip-shaped scraps. The fibrous and chip-like chips are pneumatically conveyed through the inlet 41 to a mixing device 8, 8' with a substantially horizontally extending hollow body 35. The slag 2 is conveyed to the hollow body 35 at its rear end face by the rotation of a shaft 36 with a mixing tool 37 extending substantially over its entire length in the hollow body 35 and by an outlet 42 for conveying air to the mixing device 8, 8'. Wherein glue is sprayed onto the chips 2 from the rear end face of the hollow body 35 by means of a glue nozzle 43, the chips 2 being fed to a cyclone 10, 13 'after being discharged from the mixing device 8, 8'. The conveying air is at least partly the exhaust gas returned from the cyclone 10, 13 and introduced directly into the mixing device 8, 8'.
Description
Technical field
The present invention relates to be used for method and apparatus by the dry gluing of the material of especially lignocellulose-containing and/or fibre-bearing element or bits slag that form by plastics, glass fibre etc., fiber and/or fragment shape.
Background technology
Being used to make the fiber gummed that medium density fibre board (MDF) or high density fiberboard or other be similar to the material of plate both can also can carry out under the drying regime of fiber under the dampness of fiber.The advantage of bonding fiber is under drying regime, and the glue consumption rate glues together few under dampness.Secondly the pollution to environment is less when dry gluing, because the increasing discharging that brings the formaldehyde of using from glue mixing water along with the drying of the fiber of gummed.
For example by the method and apparatus of the dry gluing of known a kind of fiber that is used for lignocellulose-containing and/or fibre-bearing element of DE 33 13 380 C2 and fragment.
In the known method of this type, provide the transmission air by the suction room air at the rear end face place of hollow body.Here because this by indirect conveying of transmission air and bigger room air deposit, owing to pursue as far as possible little energy consumption, the conveying air that is used for mixing apparatus can only have lower temperature, for example 20 ℃, and the bits slag arrives one with this temperature and is used for making in the forcing press of fiber and sawdust-board behind gummed, this is imperfect for actual proof.In order to reach the needed about 200 ℃ bits slag temperature of pressing process, must therefore carry out rapid heating to the bits slag.
Summary of the invention
Therefore the objective of the invention is, a kind of device of method He this type of this type is provided, make and when making fiber and sawdust-board, reduce energy consumption, and reduce the discharge capacity that forms by cyclone separator waste gas.
For this reason, the invention provides a kind of being used for by the material of lignocellulose-containing and/or fibre-bearing element or by plastics, glass fibres etc. are formed, the method of the dry gluing of the bits slag of fiber and/or fragment shape, wherein consider slag to be worth doing and pneumatically flow to a mixing apparatus with horizontally extending hollow body by inlet, the bits slag extends on its whole length in hollow body by one, have the rotation of axle of mixed instrument and the exit that is transported to mixing apparatus by the conveying air of supplying with at hollow body rear end face place, glue is sprayed on the bits slag by the gummed nozzle from the rear end face of hollow body, and the bits slag flows to a cyclone separator behind the output mixing apparatus, it is characterized by: carry air to feed back to small part from cyclone separator, directly introduce the waste gas of mixing apparatus.
The bits slag is by the inlet input of pneumatic conveying through a mixing apparatus in said method, and mixing apparatus has the hollow body that a substantial horizontal is extended.One is rotated in hollow body, and this extends on the total length of hollow body basically, and has the mixed instrument of considering slag to be worth doing that is used for.The bits slag strengthens the exposed surface of bits slag thus by mixed instrument with by the conveying air that sucked by mixing apparatus and even, and by being arranged on the gummed nozzle gummed on the hollow body rear end face.Consider slag simultaneously to be worth doing and be transported to outlet, then flow to a cyclone separator by mixing apparatus and the inlet of carrying air from mixing apparatus.Owing to carry air to small part, that is to say at most that 100% is the waste gas of cyclone separator, it directly introduces mixing apparatus, can effectively utilize the heat of waste gas on the one hand.Carry air to be heated to higher temperature effectively by such method on the other hand, the waste gas of promptly directly introducing mixing apparatus heated before entering mixing apparatus.Different therewith, in traditional method, must heat whole room air, bring very big energy consumption thus.Secondly cyclone separator waste gas directly being introduced mixing apparatus, thereby continue to utilize waste gas, is favourable reducing as far as possible aspect the discharge capacity that is formed by waste gas.
Except when making fiber and sawdust-board, reducing the operating cost, the present invention also brings such advantage, promptly, reduce the compacting needed time of this plate, because the bits slag arrives in the forcing press with higher temperature, thus with the conventional method reduced in comparison be heated to about 200 ℃ heating period.
Carry tangent line that air preferably moves around the mixed instrument and flow to mixing apparatus, but it also can be along vertical input of hollow body in the direction of rotation of mixed instrument.
Carry air for example can have from 20 ℃ to one with the temperature of gluing together the relevant upper limit.The upper limit determines that by such temperature promptly, undesirable sclerosis takes place the glue that is coated on the bits slag when this temperature.
Carrying the air the pick of is fresh air.So for example for carrying air to form by 70% cyclone separator waste gas and 30% fresh air.This moment, fresh air was heated to the temperature of regulation, then mixed with cyclone separator waste gas, and this is useful, so that this mixture is flowed to mixing apparatus as the conveying air.
Secondly preferably imagine according to the present invention, will be called the air that intercepts air and flow to mixing apparatus in this wise, make it substantially parallelly along the hollow body inwall with preferably greater than the speed of carrying air or to move with the identical speed of conveying air.This intercepts air and can be arranged on the part or whole surface of hollow body inwall, particularly on whole following half inner wall surface.It is used for causing an air cushion layer on inwall, it prevents to consider to be worth doing the slag sintering on inwall.Thereby through the time of length just need be cleaned mixing apparatus.
The speed that intercepts air can be about twice of carrying air.The thickness that intercepts air layer can be for for example 4 to 5mm.The obstruct air is best and carry air from same source of the gas.If comprise residual bits slag in the waste gas of cyclone separator, intercepting air so can only be fresh air also, does not comprise the bits slag with the hole that is used in the feeding hollow body that intercepts air.Fresh air both can heat also and can not heat.
Can on wall, form condensate by the inwall of cooling hollow body in addition.Additionally prevent to consider to be worth doing slag attached on the wall by the condensate film on the inwall.
Correspondingly, the invention provides a kind of being used for by the material of lignocellulose-containing and/or fibre-bearing element or by plastics, glass fibres etc. are formed, the device of the dry gluing of the bits slag of fiber and/or fragment shape, have: one has a horizontally extending hollow body and is used for pneumatically importing the mixing apparatus of the inlet of hollow body with considering slag to be worth doing, one extends on the whole length of hollow body, axle with mixed instrument, one being used on the hollow body rear end face carried the input pipe of air, gummed nozzle on the hollow body rear end face, outlet with a mixing apparatus, it is connected with cyclone separator by a pipeline, it is characterized by: be provided with mechanism, and make conveying air to small part feed back, directly introduce the waste gas of the cyclone separator of mixing apparatus.
Preferably, but carry air temperature adjustment to 20 ℃ to one according to glue fixed temperature upper limit, temperature upper limit begins sclerosis by glue and determines.
Further, be provided with a mechanism so that carry air part real estate from fresh air.
Preferably, the hollow body rear end face has a box-shaped end cap, and described end cap band one is used to carry such inlet of air, makes to carry air tangentially to import hollow body along the direction of rotation of axle.
Preferably, be provided with a mechanism, so that can flow to mixing apparatus in this wise with intercepting air, make intercept air along the inwall of hollow body and be parallel to inwall with carry air in opposite directions speed or moving on every side to the small part hollow body to be higher than the speed of carrying air.Thus, intercept air and can cover the most nearly 360 ° of hollow body periphery of inner wall.
Advantageously, described mechanism has two circular passages that are arranged on the hollow body rear end face, they symmetrically respectively with bottom around the hollow body of an annulus 1/4th on extend, intercept air and introduce hollow body by described annulus.Provide a kind of being used for thus and produce the specially suitable method that intercepts air, wherein introduce the difference of the obstruct air of each circular passage,, extend to hollow body inside from inwall for example greater than 5mm according to the annulus width from the top in the latter half of hollow body.Advantageously, described circular passage narrows down till the input hole that intercepts air plays a minimum point gradually.That is to say that the circular passage is to minimum point, thereby narrow down gradually to the minimum point of hollow body cross section, guarantee to intercept air on the whole length of each annulus with identical pressure ejection.
Should be arranged on the whole circumference of hollow body if intercept air, can also be provided with two so respectively with the respective annular passage of an annulus except that above-mentioned circular passage, wherein these circular passages are provided with in this wise.Make them will intercept air is introduced hollow body along inwall the first half.
Preferably, be provided with mechanism, so that carry the air of keeping a public place clean for the pipeline that connects outlet and cyclone separator in the exit of contiguous mixing apparatus.Like this, the air of keeping a public place clean that flows to the pipeline that connects mixing apparatus outlet and cyclone separator is used for feasiblely not considering slag deposits to be worth doing in this pipeline equally.
By the present invention, also can be provided with two mixing apparatus that are arranged in parallel.
Description of drawings
By means of an embodiment the present invention is done more detailed explanation below, here with reference to accompanying drawing.
Accompanying drawing is represented:
Fig. 1 is used for the general chart of device of dry gluing fiber and fragment,
Fig. 2 press Fig. 1 the dry gluing device mixing apparatus schematic sectional view and
Fig. 3 presses the cutaway view of the mixing apparatus of Fig. 2 along the A-A line.
The specific embodiment
Has a storage bin 1 that has fiber or a fragment shape bits slag 2 by the dry gluing device of Fig. 1.Storage bin 1 has a conveyer belt 3, and belt scale 4 is carried in its inside built-in.On conveyer belt 3, connect a breeches pipe 5, it will consider slag 2 by two mixing apparatus 8,8 of a distributing valve 6 introducings ' input pipe 7,7 '.The mixing apparatus 8,8 that below will describe in detail by means of Fig. 2 and 3 at output ' second cyclone separator 13 of separator is connected by pipeline 9,9 ' be used as afterwards with first cyclone separator 10 and as preceding separator, and cyclone separator 13 is connected with cyclone separator 10 by another pipeline 11 with a fan 12.The bits slag 2 that separates in two cyclone separators 10,13 flows to a common fiber air classifier (Fasersichter) 15 by a common pipeline 14, and the fiber air classifier has a hot air inlet 16, and is used for the outlet and that bits slag 2 further flows to a unillustrated forming machine is used for the outlet 18 of waste material.
The waste gas of cyclone separator 13 is partly introduced one by a pipeline 19 and is carried in the pipeline 20 of fresh air.Fresh air is through a heating unit 21 input channels 20, and fresh air can be heated to the temperature of hope with heating unit.With 22 bypasses that are used for regulating air of representing heating unit 21.Fresh air pipe 20 is transformed into a pipeline 25 with a fan 23 and a choke valve 24, this pipeline be used for conveying air input mixing apparatus 8,8 '.Bifurcated goes out a pipeline 26 that is used for air is imported breeches pipe 5 before choke valve 24.
The mixing air of forming by the waste gas and the fresh air of cyclone separator 10, the 13 obstruct air that a part will illustrate as the back in pipeline 20 through another pipeline 27 and a fan 28 flow to mixing apparatus 8,8 '.Secondly the part of the mixing air in pipeline 20 through another pipeline 29 and fan 30 flow to bypass duct 31 and 31 ', this bypass duct walk around mixing apparatus 8,8 ', feed then pipeline 9,9 '.Because pipeline 7,7 ' by bypass duct 32,32 ' with pipeline 9,9 ' be connected, bypass duct 32,32 ' be used for when the wet type gummed that cleans mixing apparatus and therefore carry out, walk around mixing apparatus 8,8 ', the bifurcated of bypass duct 31,31 ' before its outlet go out pipeline 9,9 '.
As shown in Figure 2, the mixing apparatus 8 that mixing apparatus 8 or structure are identical ' have a columniform basically hollow body 35 that is installed on shank 33 and 34.In hollow body 35 with Reference numeral 52 and 52 ' supporting one with many mixed instruments 37 the axle 36.Axle 36 drives by drive unit 38, and uses water cooling by a refrigerating head 39.
With inlet 41 adjacent hollow body rear end faces in the first half of hollow body 35 one binder removal is set semicirclely and closes nozzle 43.Will be by a supply pipe 44 from the liquid glue input gummed nozzle 43 of unillustrated glue material-storage jar.
Secondly, preceding case 45 also have two circular passages 48 and 48 ', they are from an inlet 49 or 49 that links to each other with pipeline 27 ' the extend to minimum point 50 of hollow body 35 always.If circular passage 48,48 ' on hollow body 35 the latter halfs, extend, so they have respectively an annulus 51 and 51 '.Intercept air by annulus 51,51 ' enter hollow body 35, and move along its inwall by higher speed.For make the pressure that intercepts air annulus 51,51 ' whole length on be uniformly, circular passage 48,48 ' have annulus 51 and 51 ' to a section of the minimum point 50 of hollow body 35, narrow down gradually.Annulus 51,51 ' have an about spread length of 4 to 5mm.
Bits slag 2 passes hollow body 35 by entering the mouth 41 mixed instruments that are rotated after entering hollow body 35 37 and carry air to carry, and at this moment considers the glue spray that slag is used ejection from gummed nozzle 43 to be worth doing.Carry the speed of air can be for example 24m/s.The speed that intercepts air is for for example about 40 to 50m/s.Thereby on the hollow body inwall, form an air cushion layer by intercepting air, intercepting air may be attached to the bits slag 2 on the wall because its very high speed is taken away, to consider slag to be worth doing and send back in the conveying air, and prevent to consider to be worth doing slag 2 sintering on wall, and when it gets loose, form agglomerate.Because by intercepting the air cushion that air forms, compared with prior art, mixing apparatus 8 can have longer running time before it need clean.
In pipeline 20, produce, and as carry gas, intercept air and with act on pipeline 9,9 ' the Air mixing air of keeping a public place clean can be for example 70% be the waste gas of cyclone separator 10,13 and the fresh air of 30% heating.By the fresh air of input heating, the temperature of mixing air can be adjusted to for example 80 ℃, can also arrive higher temperature in case of necessity.Because carry air directly import mixing apparatus 8,8 ', being favourable aspect the energy, shortened the press time in the forcing press after is connected forming machine than higher temperature thus.
Certainly also can be provided for related device dry gluing, that have only a mixing apparatus according to the present invention.
Claims (17)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000132592 DE10032592C1 (en) | 2000-07-07 | 2000-07-07 | Dry adhesive application process for fibers and chips involves supplying exhaust air from cyclone directly to mixing device to serve as transporting air |
| DE10032592.0 | 2000-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1440325A CN1440325A (en) | 2003-09-03 |
| CN1205005C true CN1205005C (en) | 2005-06-08 |
Family
ID=7647823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01812441 Expired - Fee Related CN1205005C (en) | 2000-07-07 | 2001-06-23 | Method and device for dry gluing of fibrous and chip-like slag |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1205005C (en) |
| AU (1) | AU2001279682A1 (en) |
| DE (1) | DE10032592C1 (en) |
| RU (1) | RU2266815C2 (en) |
| WO (1) | WO2002004183A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10153593B4 (en) * | 2001-11-02 | 2005-11-17 | Fritz Egger Gmbh & Co | Apparatus and method for wetting wood fibers with a binder fluid |
| DE102004054162B3 (en) * | 2004-11-10 | 2006-05-04 | Flakeboard Company Limited, St.Stephen | Method and device for preventing contamination of a transport device due to freshly glued fibers |
| DE102006058625B3 (en) * | 2006-12-13 | 2008-06-05 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Fibers gluing system for producing e.g. medium density fiberboard plates, has nozzles that are transferred in gluing operation from standby into operating positions to glue fibers and transferred during operation interruption |
| RU2466863C1 (en) * | 2011-03-15 | 2012-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Поволжский государственный технологический университет" | Device for obtaining wood concrete |
| CN107160529A (en) * | 2017-07-14 | 2017-09-15 | 湖北凯利板业有限公司 | A kind of straw powder material glue mixing pavement system |
| CN111844340B (en) * | 2020-08-05 | 2022-04-26 | 临沂市华源经贸有限公司 | Shaving board production and processing technology |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3006438C2 (en) * | 1980-02-21 | 1983-09-01 | Lödige, Fritz | Process for charging a continuous mixer and continuous mixer |
| DE3313380C2 (en) * | 1983-04-13 | 1985-11-14 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Method and device for continuously mixing solid particles with at least one liquid |
| IT1307924B1 (en) * | 1999-01-25 | 2001-11-29 | Cmp Spa | GLUING MACHINE FOR PLANTS TO PRODUCE WOOD INFIBRA PANELS. |
-
2000
- 2000-07-07 DE DE2000132592 patent/DE10032592C1/en not_active Withdrawn - After Issue
-
2001
- 2001-06-23 RU RU2003103598/12A patent/RU2266815C2/en not_active IP Right Cessation
- 2001-06-23 AU AU2001279682A patent/AU2001279682A1/en not_active Abandoned
- 2001-06-23 CN CN 01812441 patent/CN1205005C/en not_active Expired - Fee Related
- 2001-06-23 WO PCT/EP2001/007139 patent/WO2002004183A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN1440325A (en) | 2003-09-03 |
| DE10032592C1 (en) | 2001-10-31 |
| AU2001279682A1 (en) | 2002-01-21 |
| WO2002004183A1 (en) | 2002-01-17 |
| RU2266815C2 (en) | 2005-12-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050608 Termination date: 20110623 |