CN109732737A - The oriented wood chipboard production system and oriented shaving plate producing process of fire retardant spray structure are set - Google Patents
The oriented wood chipboard production system and oriented shaving plate producing process of fire retardant spray structure are set Download PDFInfo
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- CN109732737A CN109732737A CN201811642553.1A CN201811642553A CN109732737A CN 109732737 A CN109732737 A CN 109732737A CN 201811642553 A CN201811642553 A CN 201811642553A CN 109732737 A CN109732737 A CN 109732737A
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- retardant
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Abstract
The invention discloses the oriented wood chipboard production systems and its production method of setting fire retardant spray structure.The production system includes: flaking device, wet flaking transmission device, wet flaking feed bin, drying device, dry flaking transmission device one, screening plant, dry flaking feed bin, dry flaking transmission device two, glue mixing device, laying device, hot-press arrangement and fire retardant spray structure；The fire retardant spray structure is connected with the flaking device, dry flaking transmission device one and/or dry flaking transmission device two, glue mixing device, laying device.The present invention is sprayed using multi-process, and flaking absorbs sufficiently, and fire retardant is evenly distributed, and by spraying various retardant solutions while flaking, can further increase the cooling extent of knife ring and blade unexpectedly while obtaining excellent fire retardant coverage rate.Handle obtained fire-retardant oriented wood chipboard, excellent flame retardancy；Physical property is suitable with the oriented wood chipboard physical property of non-addition fire retardant production compacting.
Description
Technical field
The invention belongs to wood processing fields, are related to timber processing machine, and in particular to a kind of setting fire retardant sprinkling
The oriented wood chipboard production system and oriented shaving plate producing process of structure.
Background technique
Oriented wood chipboard (OSB) is to be processed into flaking by special equipment using timber such as poplar, pines as raw material, through dry
A kind of oriented structure plate made of the techniques such as dry, sizing, orienting spreading, hot-forming.Its surface layer flaking is in longitudinal arrangement, core
Layer flaking is in transversely arranged.This criss-cross arrangement, has recombinated wood grain structure, has completely eliminated wood internal stress pair
The influence of processing, with excellent workability and moisture resistance.Be oriented structure inside OSB, non junction, it is seamless, split
Trace, whole uniformity is good, and internal bond strength is high, therefore OSB has obtained extensive development in recent years.
However, being restricted it above in the application of numerous areas since common oriented wood chipboard has combustibility.To the greatest extent
It manages existing oriented wood chipboard and usually passes through addition fire retardant improvement flame retardant property, but often complexity is very high for its technique,
Or cost is caused to remain high using expensive fire retardant, and flame retardant property is also unable to satisfy the requirement of greater security.
It is therefore desirable to oriented wood chipboard process units and production technology make improvements, to promote the anti-flammability of oriented wood chipboard
Can, and can industrially implement to produce in batches.
Summary of the invention
The present invention provides a kind of oriented wood chipboard production system that fire retardant spray structure is arranged, and the oriented wood chipboard is raw
Production system includes: flaking device, wet flaking transmission device, wet flaking feed bin, drying device, dry flaking transmission device one, screening
Device, dry flaking feed bin (including the dry flaking feed bin in surface layer and the dry flaking feed bin of sandwich layer), dry flaking transmission device two, glue mixing device
Rear place after (including the dry flaking glue mixing device in surface layer and the dry flaking glue mixing device of sandwich layer), laying device, hot-press arrangement, hot pressing
Manage device and fire retardant spray structure；
The fire retardant spray structure can be transmitted with the flaking device, dry flaking transmission device one and/or dry flaking
Device two, glue mixing device and/or laying device connection.
After-treatment device after the hot pressing may include fire retardant spray structure.
The apparatus according to the invention, the fire retardant spray structure may include fire retardant storage tank, spray head (or atomizer,
Feeder for solid materials) and connect fire retardant storage tank and spray head or connect the fire retardant delivery pipe of fire retardant storage tank and atomizer
Road.For example, can be set on the fire retardant conveyance conduit mass flowmenter, flow sensor, pump and valve (such as ball valve or
At least one of person's gate valve).For another example, the fire retardant conveyance conduit may include conveying main line and convey branch, described defeated
Send branch circuit parallel connection.For another example, mass flowmenter and/or pump can be set on the conveying main line, the conveying branch road can be set
Set flow sensor, ball valve and/or gate valve.
The process that solid flame retardant can be delivered to needs for example, by the mode of helical feed by the feeder for solid materials.
The apparatus according to the invention, the fire retardant storage tank may include storage tank tank body and be set to that Tank is intracorporal to be stirred
Device is mixed, the storage tank tank body preferably keeps the temperature tank body, and the blender is preferably electric mixer.
The apparatus according to the invention, the spray head can be pressure nozzle, such as pressure type atomizer.
The apparatus according to the invention, the fire retardant spray structure can also include fire retardant preparing tank, the fire retardant
Preparing tank and the fire retardant storage tank pass through piping connection.Further, the fire retardant preparing tank may include preparing tank tank
Body is set to the intracorporal blender of Tank and weight transmitter.Preferably, the weight transmitter is uniformly arranged on described match
The quantity of the bottom of tank processed, the weight transmitter can be one, two or more, for example, the weight transmission
The quantity of device can be three.Further, store up on tank connected pipeline can be with for the fire retardant preparing tank and the fire retardant
Mass flowmenter and/or pump are set.Further, the blender is preferably electric mixer.Preferably, the fire retardant is matched
Tank processed can also pass through piping connection with water tank；It preferably, can on the connecting line of the fire retardant preparing tank and water tank
Pump is arranged.
The apparatus according to the invention, with the flaking device, dry flaking transmission device one and/or dry flaking transmission device
Two, glue mixing device and/or the fire retardant spray structure of laying device connection can be selected from fire retardant spray structures one, fire-retardant
One of agent spray structure two, fire retardant spray structure three, fire retardant spray structure four are a variety of.Preferably, described fire-retardant
Agent spray structure one is connected with the flaking device；Preferably, the fire retardant spray structure two is transmitted with the dry flaking
Device one is connected with the dry flaking transmission device two；Preferably, the fire retardant spray structure three and the glue mixing
Device is connected；Preferably, the fire retardant spray structure four is connected with the laying device.
The apparatus according to the invention, the fire retardant spray structure in the after-treatment device after the hot pressing can be fire-retardant
Agent spray structure five.
As needed, fire retardant spray structure four and fire retardant spray structure five can be used advantageously in apparatus of the present invention
In the surface layer flame retardant property for supplementing or enhancing oriented wood chipboard.
The technical solution of device according to the present invention, the fire retardant spray structure one are connected with the flaking device.Its
In, the flaking device further includes knife ring and the blade that is distributed on knife ring, peripheral distribution of the spray head along the knife ring.It is excellent
Selection of land, the blade and/or spray head can be uniformly distributed.
For example, the setting angle of the blade can according to need setting, such as the angle of blade and knife ring can be selected from
24-35 degree, such as selected from 25,26,27,28,29,30,31,32,33 or 34 degree.
For example, the spray head can be 0~4cm, such as 0.5~4cm at a distance from knife ring excircle；Illustratively, away from
From can be 1cm, 1.5cm, 2cm, 3cm or 4cm.
For example, the spray angle of the spray head can with angle≤90 degree of the cutting edge of the blade, for example, 30,45,
60 or 90 degree；Preferably, the spray angle of the spray head is vertical with the cutting edge of the blade.
For example, the quantity of the spray head can be one, two or more；For example, the quantity of the spray head is no more than
20, such as no more than 15, it is no more than 10；Illustratively, the quantity of the spray head can for 10,8,6,5,
4,3,2,1.
For example, the quantity of the blade can be 10-60 piece, such as 20-50 piece, 30-48 piece.
For example, the quantity of the conveying branch can be identical or different with the quantity of the spray head, it is preferable that be each spray
Head one independent conveying branch of setting.
The technical solution of device according to the present invention, the fire retardant spray structure two and dry one phase of flaking transmission device
Connection.Wherein, the dry flaking transmission device one is arranged between the drying device and the screening plant, the dry flaking
Transmission device further include: belt, blanking channel, dispersing device and spiral extruder；The blanking channel is connected with belt, institute
Dispersing device is stated to be arranged in blanking channel；The lower section of blanking channel is arranged in the spiral extruder.Preferably, the sprinkling
Structure two is connected with the blanking channel inner wall of the blanking channel and/or the dispersing device.
The inner wall of the blanking channel, such as upper end, middle-end or the bottom end of inner wall can also be arranged in the spray head.It is preferred that
Ground, when the quantity of the spray head is two or more, the spray head be can be set in the identical of blanking channel inner wall or not
On same level face.Preferably, the tangent line phase of the setting angle of the spray head and the inner sidewall of the blanking channel or inner sidewall
Vertically and it is oriented interior.Preferably, when the bottom end of the blanking channel inner wall is arranged in the spray head, the spray head and blanking
The angle of vias inner walls is less than 90 degree.Preferably, the spray head is evenly distributed in the inner wall upper end of the blanking channel, middle-end
Or on the identical or different horizontal plane of bottom end.
According to an embodiment of the invention, the height of the blanking channel is not particularly limited.Those skilled in the art can
To combine the Parameter Conditions such as field conditions and blanking speed, required fire retardant adhesion amount, the height of blanking channel is set
Degree.
The technical solution of device according to the present invention, the dispersing device can be the device that can break up flaking, such as
It can be bored roll.The outer surface of the bored roll is arranged in the spray head.For example, the spray head be evenly spaced in it is described
The outer surface of bored roll, it is preferable that the distance between adjacent spray head can be independently from each other 5cm or more, such as 10cm
More than, such as 10cm or more, 20cm or more, 30cm or more, 40cm or more.For example, the setting angle of the spray head with it is described hollow
The outer surface tangent line of roller is perpendicular and spray head faces away from the outer surface of the bored roll.For example, the bored roll
Tooth element is additionally provided on outer surface, the tooth element is evenly distributed on the outer surface of the bored roll.For another example, described
Bored roll can be connected to the motor and connect, and be driven by a motor hollow drum rotation.Further, the quantity of the bored roll can
Think one, two or more.Preferably, the spacing when the bored roll quantity >=3, between every two bored roll
It is identical or different, it is preferably identical.
The technical solution of device according to the present invention, the fire retardant spray structure two and the dry flaking transmission device two-phase
Connection.Wherein, the dry flaking transmission device two may include belt, dispersing device (such as breaing up roller and/or bored roll),
Blanking slope；The lower section on the blanking slope is arranged in the top broken up roller and be evenly distributed in blanking slope, the bored roll.
For example, the quantity for breaing up roller can be one, two or more；Preferably, the quantity for breaing up rod can be one
Root, two, three, four, five, the six roots of sensation or seven；Illustratively, the quantity for breaing up roller is seven.Preferably, adjacent
The center distance between axles for breaing up roller can be 20-40cm, such as 25-35cm.Preferably, it breaks up roller and can independently rotate for every.
For example, the quantity of the bored roll can be one, two or more.
It wherein, include spray head and fire retardant transfer pipeline in the spray structure two, the spray head, which can be set, to be broken up
On roller and/or bored roll.
For example, the spray head is arranged at any one, two or more is broken up on roller, only need to uniformly arrange；It is excellent
Selection of land, every is broken up roller or breaks up 2-6 spray head of uniformly arranging on roller every one.
For example, the spray head is arranged on the bored roll, the preferably described spray head is evenly spaced in the hollow rolling
On cylinder；Preferably, tooth element can also be set on the bored roll, and the tooth element and spray head are staggered.Into one
Step ground, the bored roll can also be electrically connected with motor (such as variable-frequency motor).
For example, weighing belt is arranged in the lower section at the blanking of the dry flaking transmission device two, the flaking warp of fire retardant is sprayed
After bored roll, fall on weighing belt.Moisture probe is arranged in the tail portion of the weighing belt, for gained after detection sprinkling fire retardant
Fire-retardant flaking moisture content.
The technical solution of device according to the present invention, the fire retardant spray structure three are connected with the glue mixing device.Institute
The one end for stating glue mixing device connects upper blanking port, and the other end connects whereabouts material mouth.Preferably, the upper blanking port and the skin
Belt scale connection, the whereabouts material mouth are connect with scratch board conveyor.
Wherein, the fire retardant spray structure three includes fire retardant atomizer, fire retardant storage tank and fire retardant transfer pipeline.
For example, the glue mixing device can be drum-type glue mixer, internal setting adhesive atomizer and fire retardant mist
Change device；Preferably, the quantity of the adhesive atomizer and fire retardant atomizer can be one, two or more；It is preferred that
Ground, the adhesive atomizer and fire retardant atomizer are alternately arranged；Preferably, the adhesive atomizer and fire retardant atomization
The spacing of device can be 40-100cm.Such as 50-80cm.For another example, the fire retardant atomizer by fire retardant transfer pipeline with
Fire retardant storage tank is connected.
The technical solution of device according to the present invention, the fire retardant spray structure four are connected with the laying device.Its
In, the laying device is arranged between the glue mixing device and hot-press arrangement, and the laying device includes slab scale；It is preferred that
Ground is uniformly laid with slab on the slab scale.Further, the spray head in the spray structure four is vertically set on the slab
Top.Preferably, the fire retardant spray structure four includes towards the positive first row spray head of plate and towards the slab back side
The second row spray head of lower belt.For example, the first row spray head is used to spray fire retardant, the second row spray to slab front
Head is for spraying fire retardant to slab lower backside belt.Preferably, the setting position of the first row spray head and second row spray head
Set, the position of the quantity of spray head and spray head can be interlaced with each other.Preferably, the first row spray head fire retardant sprinkling direction with
Steel slab surface is perpendicular, and the fire retardant sprinkling direction of the second row spray head and slab lower backside belt surface are perpendicular.
Preferably, the spray head can be 40~50cm at a distance from slab；Preferably, the density of setting of the spray head,
Setting quantity and spraying range are preferred with that can cover the slab area.Preferably, the specification of the slab can be with are as follows: width
2.5-2.75m thickness 60-410mm；Such as the specification of the slab can be with are as follows: width 2.56-2.7m, thickness 40-300mm.
The technical solution of device according to the present invention includes fire retardant spray structure five in the after-treatment device after hot pressing,
And the fire retardant spray structure five further comprises travel switch one and travel switch two.
The fire retardant spray structure five includes second towards the positive first row spray head of plate and towards plate back
Arrange spray head.For example, the first row spray head is used to spray fire retardant to plate front, the second row spray head is used to carry on the back to plate
Spray fire retardant in face.Preferably, setting position, the quantity of spray head and the position of spray head of the first row spray head and second row spray head
Setting can correspond to each other or interlock.Preferably, the fire retardant of the first row spray head and second row spray head sprinkling direction and plate
Perpendicular.
Further, the travel switch one and travel switch two are for detecting plate movement position.When detecting plate
When spraying region into fire retardant, fire retardant starts to spray；When detect plate leave fire retardant sprinkling region when, fire retardant stops
Only spray.
The apparatus according to the invention, the oriented wood chipboard production system can also include PLC controller, the PLC control
Device processed can be with the pump, mass flowmenter, flow sensor, ball valve, gate valve, motor, travel switch one and travel switch two
Electrical connection.
The apparatus according to the invention, the fire retardant conveyance conduit, the fire retardant preparing tank and the fire retardant storage tank
Connecting line, the fire retardant preparing tank and water tank the material of connecting line all can be stainless steel material.
The apparatus according to the invention can pump and/or introduce compressed air by being arranged on fire retardant conveyance conduit, with
Spray the fire retardant spray structure four and/or five.
The apparatus according to the invention, the pump can pump for impeller.
Further, the present invention also provides the sides that fire-retardant oriented wood chipboard is produced using above-mentioned oriented wood chipboard production system
Method, the method includes the steps: in flaking process, dry flaking transmission process, glue mixing process and postprocessing working procedures, to flaking
Spray retardant solution.Wherein, the dry flaking transmission process may include that dry flaking enters transmission before dry flaking feed bin
Process, and/or, dry flaking is sent to the process of glue mixing process from dry flaking feed bin.The postprocessing working procedures may include hot pressing
Treatment process later.
According to the technique and scheme of the present invention, the method specifically comprises the following steps:
(1) with the rotation of knife ring, blade is to wood cutting flaking, and at the same time, retardant solution is along perpendicular to knife
The direction of piece blade is equably sprayed on the flaking；
(2) flaking obtained by step (1) after drying, dry flaking before entering dry flaking feed bin, in blanking channel to
The dry flaking to fall sprays retardant solution, and dry flaking sequentially enters dry flaking feed bin later, subsequently enters glue mixing device；With/
Or,
(3) it is directly entered dry flaking feed bin after flaking obtained by step (1) is dry, what is sent out from dry flaking feed bin is dry
Flaking, enter glue mixing process before, retardant solution is sprayed when breaing up to the dry flaking in transmit process, later dry flaking into
Enter glue mixing device；
(4) after dry flaking enters glue mixing device, fire retardant and adhesive are being sprayed simultaneously to flaking, is being sent to after the completion of sprinkling
Mat formation process；
(5) retardant solution is sprayed to steel slab surface and belt in process of mating formation, slab enters hot pressing after the completion of sprinkling
Process, hot pressing obtain fire-retardant oriented wood chipboard；And/or
(6) after the completion of step (4), the plate through mating formation enters hot pressing process, postprocessing working procedures after hot-pressing
It is middle to spray retardant solution to plate tow sides, obtain fire-retardant oriented wood chipboard.
Preferably, the range of the retardant solution sprinkling can cover the flaking.
According to the method for the present invention, the timber can be selected from the timber suitable for preparing oriented wood chipboard, such as can be
At least one of pine, Eucalyptus, poplar and paulownia etc..
According to the method for the present invention, the specification of the flaking is not particularly limited.As example, the width of the flaking can
Think 5-40mm, such as 10-30mm；Thickness can be 0.4-0.8mm, such as 0.5-0.7mm；Length can be 100-180mm,
Such as 120-160mm.
According to the method for the present invention, in step (1), (2) and (3), the fire retardant can be selected from water known in the art
Dissolubility fire retardant any one, two or more.For example, the fire retardant can contain ammonium polyphosphate, ammonium phosphate, sulfuric acid
Ammonium, borax, Amcide Ammate, sodium phosphate, guanylurea phosphate, Guanidine Sulfamate 99, poly- phosphorus biguanides, biphosphate guanidine, phosphoric acid hydrogen two
At least one of guanidine, guanidine sulfate etc.；Preferably, the fire retardant can be the mixing of ammonium polyphosphate, ammonium phosphate and ammonium sulfate
Object, borax, Amcide Ammate, sodium phosphate and ammonium phosphate mixture, guanylurea phosphate, boric acid, borax and/or Guanidine Sulfamate 99
Mixture.It illustratively, can (such as the degree of polymerization be lower than 20, such as 6,8,10 containing ammonium polyphosphate in the fire retardant
Ammonium polyphosphate), ammonium phosphate and ammonium sulfate, such as mass ratio (1-3): (3-5): 1 ammonium polyphosphate (such as the degree of polymerization is lower than 20,
Such as 6,8,10 ammonium polyphosphate), ammonium phosphate and ammonium sulfate；Illustratively, the fire retardant can contain borax, sulfamic acid
Ammonium, sodium phosphate and ammonium phosphate, such as mass ratio are borax, Amcide Ammate, sodium phosphate and the ammonium phosphate of 2:3:2:3.
According to the method for the present invention, in step (1), the concentration of fire retardant can be 15- in the retardant solution
35wt%, such as 25-32wt%.
According to the method for the present invention, fire retardant is attached on the fire-retardant flaking, the adhesion amount of fire retardant can be 1.0-
6.0wt%, such as 2.0-5.0wt%, 2.2-4.7wt%, 2.5-4.5wt%；The adhesion amount of the fire retardant refers to fire retardant
The fire retardant weight that flaking is attached to after sprinkling accounts for the weight percent of over dry flaking, wherein the weight of the fire retardant is with solid
Fire retardant meter.The attachment includes that the state on flaking surface and its inside is bound to absorption, infiltration or other modes.
For example, the fountain height of the retardant solution can be 20-90L/min；For example, the fountain height can be 35-
85.4L/min、30-82L/min、70-80L/min。
For example, the moisture content of the flaking is 30-50wt%, such as 35-45wt% before sprinkling retardant solution.Spray
After spilling retardant solution, the humidity of the flaking can be 35-55wt%, such as 40-50wt%.
According to the method for the present invention, in step (2), the moisture content of the dry flaking can be 2.0-3.5wt%, such as containing
Water rate can be 3.0wt%, 3.1wt%, 3.2wt%, 3.3wt%, 3.4wt%.
For example, being attached on dry flaking after the fire retardant sprinkling, the adhesion amount of the fire retardant refers to that fire retardant sprays
The fire retardant weight for being attached to flaking afterwards accounts for the weight percent of over dry flaking, such as 1.0-3.0wt%, such as 1.5-
2.5wt%, 1.8-2.1wt%；Wherein the weight of the fire retardant is in terms of solid flame retardant.The attachment includes to adsorb, soak
Profit or other modes are bound to the state on flaking surface and its inside.
For example, the fountain height of the retardant solution can be 7-30L/min；For example, the fountain height can be 9-
12L/min、15-25L/min。
For example, can be to spray retardant solution when breaing up in blanking channel.Preferably, the speed broken up can be with
It is 20-50 revs/min.
For example, the moisture content of the dry flaking is 4-8wt%, such as 4.5-6.5wt% after sprinkling fire retardant.
According to the method for the present invention, in step (3), for example, be attached on flaking after fire retardant sprinkling, it is described fire-retardant
The adhesion amount of agent refers to that the fire retardant weight that flaking is attached to after fire retardant sprinkling accounts for the weight percent of over dry flaking, such as
1.0-3.5%, such as 1.6-3.0,1.8-2.5%；Wherein the weight of the fire retardant is in terms of solid flame retardant.The attachment packet
Include the state that flaking surface and its inside are bound to absorption, infiltration or other modes.
For example, the speed broken up can be 20-50 revs/min, delivery time 3-5 second.
For example, the fountain height of the retardant solution can be 7-30L/min；For example, the fountain height can be 9-
12L/min、15-25L/min。
For example, the moisture content of the dry flaking is no more than 10wt% after sprinkling fire retardant, such as moisture content is 4-
8wt%, 5-7.5wt%.
According to the method for the present invention, in step (4), the fire retardant can in solid form and/or liquid form adds.
When fire retardant is solid, 6 μm can be no more than selected from modified superfine powder fire retardant, the partial size of the fire retardant；Example
Such as D95≤5μm.For example, the raw material of the superfine powder fire retardant of the modification includes ammonium polyphosphate, zinc borate, (melamine aminuria
At least one of hydrochlorate, melamine phosphate, pentaerythrite and aluminium hydroxide) and Alcoholic modifier.Preferably, described poly-
Ammonium phosphate, zinc borate and optionally from one, secondly or more: melamine cyanurate, melamine phosphate, season penta
The mass ratio of four pure and mild aluminium hydroxides can be (3-7): (2-4): (1-3).Wherein, the quality of the Alcoholic modifier accounts for poly- phosphorus
Sour ammonium, zinc borate, (at least one of melamine cyanurate, melamine phosphate, pentaerythrite and aluminium hydroxide) are total
The 10-15% of quality, such as account for 12%.Preferably, the degree of polymerization of the ammonium polyphosphate is between 1000-1500, such as 1200,
1400.Preferably, the Alcoholic modifier can be selected from least one of ethylene glycol, propylene glycol and glycerine.
For example, the superfine powder fire retardant of the modification is obtained by above-mentioned raw materials physical mixed or chemical modification.
When fire retardant adds in liquid form, fire retardant can be identical as fire retardant used in step (1)-(3).It is preferred that
Ground, the concentration of fire retardant is 15-35wt%, such as 18-32wt% in the retardant solution.
For example, the fountain height of the fire retardant can be 5-30L/min, such as 8-12L/min, 15-25L/min.
For example, being attached on flaking after the fire retardant sprinkling, after the adhesion amount of the fire retardant refers to fire retardant sprinkling
The fire retardant weight for being attached to flaking accounts for the weight percent of over dry flaking, such as 1.5-6%, such as 2.0-5%；It is wherein described
The weight of fire retardant is in terms of solid flame retardant.It is described attachment include be bound to absorption, infiltration or other modes flaking surface and
Its internal state.Specifically, when the fire retardant adds in solid form, the adhesion amount of the fire retardant can be 3-
4.5wt%, such as 3.3-4.0wt%；When the fire retardant is added in the form of retardant solution, the adhesion amount of the fire retardant
It can be 1-2.5wt%, such as 1.4-2.2wt%.
It for example, the adhesive can choose this field routine adhesive, such as can be polymeric isocyanate.The glue
The mass ratio of glutinous agent and fire retardant can be 1:(0.1-3), for example, 0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,
1.0,1.2,1.5,1.8,2.0,2.2,2.5,2.8,3.0, such as 1:(1-2), such as 1:(1.2-1.6).
For example, the moisture content of the flaking is 4-12%, such as 5-11% after the completion of fire retardant and adhesive sprinkling.
According to the method for the present invention, in step (5) and step (6), the fire retardant can be selected from guanylurea phosphate and boron
The combination of at least one of acid, borax and Guanidine Sulfamate 99.For example, the mass ratio of the two can be with are as follows: monophosphate monophosphate dicyandiamidines:
(at least one of boric acid, borax and Guanidine Sulfamate 99)=(6-8): (2-4).For another example, the temperature of the fire retardant can be
45-55℃.The concentration of fire retardant is 15-35wt%, such as 25-32wt% in the retardant solution.
According to the method for the present invention, in step (5), the fountain height of the retardant solution can be 5-10L/min, such as
6-8L/min。
For example, being attached on flaking after the fire retardant sprinkling, after the adhesion amount of the fire retardant refers to fire retardant sprinkling
The fire retardant weight for being attached to flaking accounts for the weight percent of over dry flaking, such as 0.8-2%, such as 0.9-1.2%；Wherein institute
The weight of fire retardant is stated in terms of solid flame retardant.The attachment includes being bound to flaking surface with absorption, infiltration or other modes
And its internal state.
For example, the moisture content of the flaking is 10-13wt% after the completion of fire retardant sprinkling.
According to the method for the present invention, in step (6), the fountain height of the retardant solution can be 0.8-2L/min, example
Such as 1-1.5L/min.
For example, being attached on flaking after the fire retardant sprinkling, after the adhesion amount of the fire retardant refers to fire retardant sprinkling
The fire retardant weight for being attached to flaking accounts for the weight percent of over dry flaking, such as 0.1-0.4wt%, such as 0.15-0.3%；
Wherein the weight of the fire retardant is in terms of solid flame retardant.The attachment includes being bound to plane with absorption, infiltration or other modes
The state on piece surface and its inside.
For example, the moisture content of the oriented wood chipboard is 3-7wt%, such as 4-6.5wt% after the completion of fire retardant sprinkling.
For example, the hot pressing pressure of the hot pressing process can be 2.0-3.5N/mm2, such as 2.5-3.0N/mm2.The hot pressing
The inlet temperature of process can be 235-245 DEG C, such as 237-243 DEG C.The outlet temperature of the hot pressing process can be 90-
100 DEG C, such as 93-97 DEG C.The time of the hot pressing process can be 115-375s, such as 150-350s, 200-300s.
According to the method for the present invention, in each step, the fountain height is adjusted by adjustable speed pump；Preferably, with flowmeter institute
Show that reading is fountain height.
Beneficial effects of the present invention:
The device of the invention is sprayed using multi-process, and flaking absorbs sufficiently, and fire retardant is evenly distributed, and improves single process spray
The flame retardant amount spilt avoids wood shavings surface from having little time to absorb, and fire retardant is caused to be lost waste.Applicant surprisingly it has been found that, pass through
Various retardant solutions are sprayed while flaking, can unexpectedly while obtaining excellent fire retardant coverage rate,
Further increase the cooling extent of knife ring and blade.Under equal conditions, compared to the cooling water for spraying same temperature, the present invention
Chipper and flaking method blade temperature drop can be made to significantly improve.This implements industrial scale the system of fire-retardant flaking
Standby technique is undoubtedly very favorable.
Using the fire-retardant oriented wood chipboard of apparatus of the present invention and process, excellent flame retardancy, flame retardant property grade reach
To fire retardant B1 rank；And oriented wood chipboard good environmental protection, do not contain formaldehyde；Physical property and OSB2Plate physical property phase
When corrosion-resistant, thickness swelling rate is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oriented wood chipboard production system described in the embodiment of the present invention 1；
Fig. 2 is the knot of the chipper for being connected with spray structure one in 1 oriented wood chipboard production system of the embodiment of the present invention
Structure schematic diagram.
Fig. 3 (A) is that the dry flaking for being connected with spray structure two in 1 oriented wood chipboard production system of the embodiment of the present invention passes
Send the structural schematic diagram of device one；
Fig. 3 (B) is the structural schematic diagram of blanking port described in Fig. 3 (A).
Fig. 4 is the dry flaking transmission for being connected with spray structure two in 1 oriented wood chipboard production system of the embodiment of the present invention
The structural schematic diagram of device two.
Fig. 5 is the glue mixing device for being connected with spray structure three in 1 oriented wood chipboard production system of the embodiment of the present invention
Structural schematic diagram.
Fig. 6 is the laying device for being connected with spray structure four in 1 oriented wood chipboard production system of the embodiment of the present invention
Structural schematic diagram.
Fig. 7 is the after-treatment device for being connected with spray structure five in 1 oriented wood chipboard production system of the embodiment of the present invention
Structural schematic diagram.
Appended drawing reference: 1- knife ring, 2- blade, 3- fire retardant storage tank, 4- pressure nozzle, 5- convey main line, and 6- conveys branch,
7- mass flowmenter, 8- impeller pump, 9- flow sensor, 10- ball valve, 11- storage tank tank body, 12- electric mixer, 13- are fire-retardant
Agent preparing tank, 14- tank, 15- weight transmitter, 16- water tank, 17- belt, 18- blanking port, 19- blanking channel,
20- bored roll, 21- tooth element, 22- gate valve, 23- spiral extruder, 24- variable-frequency motor, 25- pump, the dry flaking material of 26-
Storehouse, 27- weighing belt, 28- moisture probe, the atomization of 29- adhesive, 30- fire retardant atomizer, the upper blanking port of 31-, 32- dropping material
Mouthful, 33- scratch board conveyor, 34- slab, 35- slab level ground, 36- plate, 37- first row spray head, 38- second row spray head, 39- row
Cheng Kaiguan mono-, 40- travel switch two, 41- breaks up roller.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.Furthermore, it is to be understood that after having read content disclosed in this invention, ability
Field technique personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within protection defined by the present invention
Within the scope of.
Experimental method used in following embodiments is conventional method unless otherwise specified；Institute in following embodiments
Reagent, material etc., are commercially available unless otherwise specified.
Retardant solution A used in the following embodiment: according to quality than borax: Amcide Ammate: sodium phosphate: ammonium phosphate
=2:3:2:3 adds water to be configured to retardant solution A.
Fire retardant B used in the following embodiment: ammonium polyphosphate (degree of polymerization 1000), zinc borate, aluminium hydroxide are according to matter
Amount grinds (D through airflow milling than mixing in 4:3:2 investment mixing machine95≤ 5 microns), then addition accounts for aforementioned raw material quality thereto
12% propylene glycol ultrasonic disperse 30 minutes, after heating is sufficiently stirred, obtains modified superfine powder fire retardant B.
Retardant solution C used in the following embodiment: monophosphate monophosphate dicyandiamidines and boric acid are mixed according to mass ratio 7:3,
Water is added to be configured to retardant solution C.
The model DC-PNP of flow sensor used, model MJ083BY0, NM021BY of pump, impeller in embodiment
The model 50FSB-ZZ of pump, the model W-2.0 of pressure nozzle, the power of motor are 1.1kW, the model of variable-frequency motor
YVF2-132S-4 (2.2kW), NM021BY0432B, the model YKD99Z of mass flowmenter, the model of weight transmitter
The model LX19-051 of RWT-100A, travel switch one and travel switch two, the model E1-4 of adhesive atomizer, it is fire-retardant
The model E1-4 of agent atomizer.
Unless otherwise indicated, percentage hereinafter refers both to weight percent.
Embodiment 1
The oriented wood chipboard production system for being provided with fire retardant spray structure as shown in Figure 1, comprising: flaking device, wet
Flaking transmission device, wet flaking feed bin, drying device, dry flaking transmission device one, screening plant, dry flaking feed bin (including table
The dry flaking feed bin of layer and the dry flaking feed bin of sandwich layer), dry flaking transmission device two, glue mixing device (including the dry flaking glue mixing dress in surface layer
Set and the dry flaking glue mixing device of sandwich layer), laying device, hot-press arrangement, the after-treatment device after hot pressing and fire retardant sprinkling knot
Structure；
The fire retardant spray structure and the flaking device, dry flaking transmission device two, are mixed dry flaking transmission device one
Adhesive dispenser and/or laying device connection.After-treatment device after the hot pressing includes fire retardant spray structure.
Fire retardant spray structure one is connected with flaking device, fire retardant spray structure two and dry flaking transmission device one or
Dry flaking transmission device two is connected, and fire retardant spray structure three is connected with glue mixing device, fire retardant spray structure four and paving
Assembling device is connected.Fire retardant spray structure in after-treatment device after the hot pressing is fire retardant spray structure five.
Preferably, screening plant includes the dry flaking screening plant in surface layer and the dry flaking screening plant of sandwich layer.Dry flaking feed bin
It is divided into the dry flaking feed bin in surface layer and the dry flaking feed bin of sandwich layer, glue mixing device is divided into the dry flaking glue mixing device in surface layer and the dry flaking of sandwich layer
Glue mixing device.
Fire retardant spray structure one to five includes fire retardant storage tank, pressure nozzle, fire retardant atomizer and connection resistance
Fire agent storage tank and pressure nozzle, the fire retardant conveyance conduit for connecting fire retardant storage tank and fire retardant atomizer.Fire retardant delivery pipe
Mass flowmenter, flow sensor, pump and ball valve are set on road.Fire retardant conveyance conduit includes conveying main line and conveying branch,
Convey branch circuit parallel connection.It conveys and mass flowmenter and/or pump is set on main line, conveying branch road setting flow sensor and ball valve.
As shown in Fig. 2, fire retardant spray structure one is connected with flaking device.Flaking device includes: knife ring 1 and uniformly divides
The blade 2 being distributed on knife ring 1, blade 2 48 pieces of quantity (it is exemplary in Fig. 2 to depict three pieces of blades, remaining unillustrated 45 pieces
Blade is uniformly arranged on knife ring 1)；
Fire retardant spray structure one includes: fire retardant storage tank 3, pressure nozzle 4 and fire retardant conveyance conduit, pressure nozzle 4
It is connected by fire retardant conveyance conduit with fire retardant storage tank 3；
The spray angle of pressure nozzle 4 is vertical with the knife face of blade 2, to guarantee the angle of spout and blade 2 in 90 °.Pressure
The quantity of power spray head 4 is 10, and pressure nozzle 4 is uniformly distributed along the excircle of knife ring 1, the outer circle of pressure nozzle 4 and knife ring 1
The distance in week can be 2cm.
Fire retardant conveyance conduit is divided into conveying main line 5 and conveying branch 6, and each conveying branch 6 is in parallel.Conveying is set on main line 5
Mass flowmenter 7 and impeller pump 8 are set, each convey is provided with flow sensor 9 and ball valve 10 on branch 6.Convey the quantity of branch 6
It can be identical or different with the quantity of spray head, it is preferable that a conveying branch 6 connects a spray head 4.
Fire retardant storage tank includes storage tank tank body 11 and electric mixer 12, and storage tank tank body 11 selects heat preservation tank body.
Fire retardant spray structure one further includes fire retardant preparing tank 13, and fire retardant preparing tank 13 passes through with fire retardant storage tank 3
Piping connection.Fire retardant preparing tank 13 includes preparing tank 14, electric mixer 12 and weight transmitter 15, weight transmitter
15 are uniformly arranged on the bottom for preparing tank 14, and the quantity of weight transmitter is three.Fire retardant preparing tank 13 and fire retardant
Mass flowmenter 7 and impeller pump 8 are set on the pipeline that storage tank 3 connects.
Fire retardant preparing tank 13 also passes through piping connection, the connection of fire retardant preparing tank 13 and water tank 16 with water tank 16
Impeller is set on pipeline and pumps 8.
It in the same manner, also may include fire retardant preparing tank 13 and water tank 16 in fire retardant spray structure two to six.
Such as Fig. 3 (A) shown device, when fire retardant spray structure two is connected with dry flaking transmission device one, wherein dry plane
Piece transmission device one is arranged between drying device and screening plant, and dry flaking transmission device includes: belt 17, blanking channel
19, bored roll 20 and spiral extruder 23；Blanking channel 19 is connected with belt 17, and two bored rolls 20 are arranged in blanking
In channel 19；The lower section of blanking channel 19 is arranged in spiral extruder 23.Preferably, fire retardant spray structure two and blanking channel
19 blanking port 18 is connected with bored roll 20.
Pressure nozzle 4 in fire retardant spray structure two is uniformly arranged on the outer surface of bored roll 20.Two-by-two spray head it
Between distance be 5cm.The setting angle of the pressure nozzle 4 and outer surface tangent line of bored roll 20 is perpendicular and 4 court of pressure nozzle
To for away from the outer surface of bored roll 20.Equally distributed tooth element 21 is additionally provided on the outer surface of bored roll 20.
Bored roll 20 is connected with variable-frequency motor 24, drives hollow drum 20 to rotate by variable-frequency motor 24.
As shown in Fig. 3 (B), the pressure nozzle 4 in fire retardant spray structure two is additionally arranged at the inner sidewall of blanking channel 19
With 18 top of blanking port of blanking channel 19.When the inner sidewall of blanking channel 19 is arranged in pressure nozzle 4, pressure nozzle 4
The tangent line that the inner sidewall of angle and blanking channel 19 is arranged is perpendicular and spray towards dry flaking.When the setting of pressure nozzle 4 is being fallen
When 18 top of material mouth, the setting angle and 18 top planes of blanking port of pressure nozzle 4 are perpendicular and spray head is oriented down.Pressure spray
First 4 are evenly distributed in 18 top of the inner sidewall of blanking channel 19 and blanking port.
Device as shown in Figure 4, when fire retardant spray structure two is connected with dry flaking transmission device two, wherein dry flaking
Transmission device two is connect with dry flaking feed bin 26 comprising belt 17 breaks up roller 41, blanking slope and bored roll 20；
The top that roller 41 is evenly distributed in blanking slope is broken up, the lower section on blanking slope is arranged in bored roll 20.Break up roller
Quantity be seven, the adjacent center distance between axles for breaing up roller is 30cm, and every is broken up roller and can independently rotated；Bored roll
Quantity be one.
Pressure nozzle 4 in fire retardant spray structure three be uniformly arranged on it is each break up on roller 41, as shown in figure 4, every
Break up 4 pressure nozzles of uniformly arranging on roller 41.
Pressure nozzle 4 is also uniformly arranged on bored roll 20, and tooth element 21, tooth-like part are also set up on bored roll 20
Part 21 and pressure nozzle 4 are staggered.Bored roll 20 is electrically connected with variable-frequency motor 24.
Weighing belt 27 is arranged in lower section at the blanking of dry flaking transmission device two, sprays the flaking of fire retardant through bored roll
After 20 break up, fall on weighing belt 27.Moisture probe 28 is arranged in the tail portion of weighing belt 27, for gained after detection sprinkling fire retardant
Fire-retardant flaking moisture content.
Dry flaking feed bin includes being divided into the dry flaking feed bin in surface layer and the dry flaking feed bin of sandwich layer, accordingly, dry flaking transmission dress
It sets two and is also classified into the dry flaking transmission device two in surface layer and the dry flaking transmission device two of sandwich layer, the dry flaking transmission device two of watch core layer is
It is connect with fire retardant spray structure three.
Device as shown in Figure 5, fire retardant spray structure three are connected with glue mixing device.In one end connection of glue mixing device
Blanking port 31, the other end connect whereabouts material mouth 32.Upper blanking port 31 is connect with weighing belt 27, and whereabouts material mouth 32 and scraper plate transport
Machine 33 connects.
Fire retardant spray structure four includes fire retardant atomizer 30, fire retardant storage tank 9 and fire retardant transfer pipeline.
Glue mixing device selects drum-type glue mixer, internal setting adhesive atomizer 29 and fire retardant atomizer 30；Glue
The quantity of glutinous agent atomizer 29 and fire retardant atomizer 30 is respectively 3, and is alternately arranged.Fire retardant atomizer 30 passes through fire-retardant
Agent transfer pipeline is connected with fire retardant storage tank 3.Adhesive atomizer 29 passes through adhesive transfer pipeline and adhesive storage tank phase
Connection.
Wherein, glue mixing device includes surface layer flaking glue mixing device and sandwich layer flaking glue mixing device, and watch core layer glue mixing device is equal
It is connected with fire retardant spray structure four.
Device as shown in FIG. 6, fire retardant spray structure four are connected with laying device, wherein laying device setting exists
Between glue mixing device and hot-press arrangement, laying device includes slab scale 35；Slab 34 is uniformly laid on slab scale 35.Fire retardant spray
Spilling structure four includes that the second row pressure towards the positive first row pressure nozzle 4 of plate and towards slab lower backside belt is sprayed
First 4, first row pressure nozzle 4 is vertically set on the top of slab 34, for spraying fire retardant to slab front.The second row
Pressure nozzle 4 is used to spray fire retardant to slab lower backside belt.Pressure nozzle is 45cm at a distance from slab；Pressure is set
Density, quantity and the spraying range of spray head 4 are to cover all slabs 34.The specification of slab are as follows: width 2.56-2.7m, thickness 40-
300mm。
Device as shown in Figure 7, includes fire retardant spray structure five in the after-treatment device after hot pressing, and the resistance
Firing agent spray structure five further comprises travel switch 1 and travel switch 2 40.It includes towards plate that fire retardant, which sprays region,
36 positive first row spray heads 37 and second row spray head 38 towards 36 back side of plate.First row spray head 37 is used for plate 36 just
Fire retardant is sprayed in face, and second row spray head 38 is used to spray fire retardant to 36 back side of plate.First row spray head 37 and second row spray head
The position of 38 setting position, the quantity of pressure nozzle 4 and pressure nozzle corresponds to each other.First row spray head 37 and second row spray head
38 fire retardant sprinkling direction and 36 perpendicular of plate.
Travel switch 1 and travel switch 2 40 are used to detect the movement position of plate 36.Enter when detecting plate 36
When fire retardant sprays region, fire retardant starts to spray；When detect plate 36 leave fire retardant sprinkling region when, fire retardant stop
Sprinkling.
The oriented wood chipboard production system further includes PLC controller, and PLC controller and pump, mass flowmenter, flow pass
Sensor, ball valve, gate valve, variable-frequency motor, moisture probe, travel switch one and travel switch two are electrically connected.
The fire retardant conveyance conduit, the connecting line of fire retardant preparing tank and fire retardant storage tank, fire retardant preparing tank and
The material of the connecting line of water tank is stainless steel material.
Embodiment 2
Flaking specification: width 5-40mm, thickness 0.4-0.8mm, length 100-180mm.
The method for producing fire-retardant oriented wood chipboard using the oriented wood chipboard production system of embodiment 1, this method include such as
Lower step:
(1) with the rotation of knife ring, blade is to wood cutting flaking, and at the same time, retardant solution is along perpendicular to knife
The direction of piece blade is equably sprayed on flaking, and the range of retardant solution A sprinkling can cover all flakings；Fire retardant is molten
The temperature of liquid A is 25 ± 5 DEG C；
(2) step (1) is sprayed with the flaking of fire retardant A after drying, before entering dry flaking feed bin, in blanking channel
It neutralizes blanking port and sprays retardant solution A to the dry flaking of whereabouts；Flaking after spraying fire retardant enters dry flaking feed bin, from dry
The dry flaking sent out in flaking feed bin, into glue mixing process；
The temperature of retardant solution A is 25 ± 5 DEG C；
Blanking port inlet amount (with over dry flaking meter): the inlet amount of surface layer flaking and sandwich layer flaking is 5t/h；
Flaking is broken up in blanking channel, breaks up speed 20-30r/min；
(3) in glue mixing process to flaking simultaneously using auger conveyor be mixed into surface modified superfine powder fire retardant B,
Spray retardant solution A (temperature is 25 ± 5 DEG C) and gluing agent solution；
Adhesive used in this step are as follows: polymeric isocyanate, resin added are the 4.5% of over dry flaking quality.
Adhesive and the mass ratio of fire retardant total amount are 1:1.56, and wherein the mass ratio of fire retardant B and A is 5:2.
(4) flaking that sends out in glue mixing device enters process of mating formation, and forms slab, slab speed of service 170mm/s, to
Slab sprays retardant solution C (temperature is 50 DEG C)；Hot pressing obtains fire-retardant oriented wood chipboard.
Fire retardant fountain height (as pump discharge), the concentration of fire retardant and flaking are aqueous before and after spraying fire retardant
The testing result of rate, fire retardant adhesion amount and each process flaking anti-flammability is specifically shown in Table 2.
Embodiment 3
Embodiment 3 is identical as 2 process of embodiment, wherein fire retardant fountain height (as pump discharge), flame retardant concentration,
And the testing result of moisture content of the flaking before and after spraying fire retardant, fire retardant adhesion amount and each process flaking anti-flammability
Specifically it is shown in Table 3.
Embodiment 4
Flaking specification: width 5-40mm, thickness 0.4-0.8mm, length 100-180mm.
The method for producing fire-retardant oriented wood chipboard, this method comprises the following steps:
(1) with the rotation of knife ring, blade is to wood cutting flaking, and at the same time, retardant solution is along perpendicular to knife
The direction of piece blade is equably sprayed on flaking, and the range of retardant solution A sprinkling can cover all flakings；Fire retardant is molten
The temperature of liquid A is 25 ± 5 DEG C；
(2) flaking that step (1) is sprayed with retardant solution A after drying, is entering dry flaking feed bin, from dry flaking material
The dry flaking sent out in storehouse sprays fire retardant when breaing up to the dry flaking in transmit process before entering glue mixing process
Solution A；
The temperature of retardant solution A is 25 ± 5 DEG C；
Breaing up speed is 20-30r/min；
(3) surface modified superfine powder fire retardant B, spray are mixed into using auger conveyor simultaneously to flaking in glue mixing process
Spill retardant solution A (temperature is 25 ± 5 DEG C) and gluing agent solution；
Adhesive used in this step are as follows: polymeric isocyanate, resin added are the 4.5% of over dry flaking quality.
Adhesive and the mass ratio of fire retardant total amount are 1:1.56, and wherein the mass ratio of fire retardant B and A is 5:2.
(4) after the completion of step (3), into hot pressing process, slab obtains plate through hot pressing, in postprocessing working procedures, to plate
Material tow sides spray retardant solution C (temperature is 50 DEG C), obtain fire-retardant oriented shaving board finished product；The hot pressing pressure of hot pressing process
Power is 3N/mm2, inlet temperature is 240 DEG C, and outlet temperature can be 95 DEG C, time 250s.
Moisture content before and after spraying fire retardant of fire retardant fountain height (as pump discharge), flame retardant concentration and flaking,
The testing result of fire retardant adhesion amount and each process flaking anti-flammability is specifically shown in Table 4.
Embodiment 5
Embodiment 5 is identical as 4 process of embodiment, wherein fire retardant fountain height (as pump discharge), flame retardant concentration,
And the testing result of moisture content of the flaking before and after spraying fire retardant, fire retardant adhesion amount and each process flaking anti-flammability
Specifically it is shown in Table 5.
The physical performance data of the fire-retardant OSB plate of the resulting finished product of embodiment 2-5 (examined by GB/T17657-2013 by physical property
Survey) as shown in table 6.
Three, other performances of the flaking in processing procedure and finished product are tested according to following method:
1, the fire retardant sprinkling uniformity and coverage rate of fire-retardant flaking
(1) fire-retardant flaking is distinguished using in such a way that red staining agent is added in fire retardant storage tank, red staining agent
Additive amount is that 1 kilogram of coloring agent is added in every cubic metre of retardant solution, and the storage of fire retardant in storage tank is controlled before detecting, is guaranteed
The storage of fire retardant is about 10 minutes usage amounts.
(2) repeatedly sampling respectively, sampling interval time are 3-4 minutes after each process of embodiment addition fire retardant, often
Sub-sampling flaking quantity is 50, it is desirable that flaking area is greater than standard flaking (standard flaking size: 120mm × 20mm) area
40%.
(3) uniformity detects: the fire retardant coverage condition on each flaking is observed by flaking surface color, for step
(1) flaking in after sprinkling, selects each flaking to cover more one side and visually judges, when the table of the variant part of flaking color
When area is greater than the 30% of entire flaking monoplanar surface product, judge that flaking sprinkling uniformity is unqualified；Except step (1)
Other steps, when the surface area of the variant part of flaking color be greater than entire flaking total surface area 30% when, judge the plane
It is unqualified that piece sprays uniformity.
Uniformity is stated with uniformity qualification flaking Zhan total flaking percentage:
Uniformity=(uniformity qualification flaking quantity/flaking total quantity) × 100%.
(4) coverage rate: the fire retardant coverage condition on each flaking is observed by flaking surface color, for step (1)
Flaking after middle sprinkling selects each flaking to cover more one side and visually judges, when flaking is not colored the area of part
Greater than entire flaking monoplanar surface product 10% when, judge the flaking sprinkling covering it is unqualified；For other except step (1)
Step judges that flaking sprinkling is covered when the area that flaking is not colored part is greater than the 10% of entire flaking total surface area
It covers unqualified.
Spreadability makes a decision result with coverage rate:
Coverage rate=(covering qualified flaking quantity/flaking total quantity) × 100%.
2, amount of flame-retardant agent
Front and back flaking water-cut variation, which is sprayed, by detection calculates amount of flame-retardant agent.
(1) flame retardant concentration detects: taking 50g or so retardant solution on production line, 2g drop is taken from 50g retardant solution
Enter surface plate, is put into 50 ± 5 DEG C of baking ovens and dries 2 hours, calculate solid content.Fire retardant solid content is denoted as a.
(2) for flaking process, 5 flaking measurement of water-content coefficient before each process sprinkling fire retardant: are selected at random before chipper
The complete timber of root, separately sampled detection moisture content (i.e. detection moisture content), takes 5 moisture content average values to be denoted as plane material aqueous
Rate b.For other processes, repeatedly sampling respectively nearby, is spaced 30 seconds, point 3 sub-samplings, mixing is equal before carrying out the process
It is even.10 flakings (40% of area not less than standard flaking area) is randomly selected from the flaking of mixing, is put into quick moisture
Analyzer measures moisture content under 100 ± 2 DEG C, 10 minutes, is denoted as moisture content b.
(3) fire-retardant flaking measurement of water-content coefficient: repeatedly sampling respectively, interval 30 after each process of embodiment addition fire retardant
Second, point 3 sub-samplings are uniformly mixed.10 flakings are randomly selected from the flaking of mixing, and (area is not less than standard flaking area
40%) it, is put into fast tester for water content, under 100 ± 2 DEG C, 10 minutes, measures moisture content, moisture content is denoted as c.
(4) fire retardant adhesion amount (refers to that the sprayed weight for being additionally attached to flaking of each fire retardant accounts for over dry flaking
Weight percent) it calculates:
Calculation formula x=(c-b) × a/ ((1-b) × (1-a-c)) × 100%.
Front and back flaking water-cut variation, which is sprayed, by detection calculates amount of flame-retardant agent at glue mixer:
(1) flame retardant concentration detects: taking 50g or so retardant solution on production line, 2g drop is taken from 50g retardant solution
Enter surface plate, is put into 50 ± 5 DEG C of baking ovens and dries 2 hours, calculate solid content.Fire retardant solid content is denoted as m.
(2) into flaking measurement of water-content coefficient before glue mixer: the repeatedly sampling nearby before carrying out the process is spaced 30 seconds,
Divide 3 sub-samplings, is uniformly mixed.10 flakings are randomly selected from the flaking of mixing, and (area is not less than standard flaking area
40%) it, is put into fast tester for water content, under 100 ± 2 DEG C, 10 minutes, moisture content is measured, is denoted as moisture content n.
(3) fire-retardant flaking measurement of water-content coefficient: repeatedly sampling respectively at door is detected in glue mixer feed opening, is spaced 30 seconds, divides 3
Sub-sampling is uniformly mixed.10 flakings (40% of area not less than standard flaking area) is randomly selected from the flaking of mixing,
It is put into fast tester for water content, under 100 ± 2 DEG C, 10 minutes, measures moisture content, moisture content is denoted as p.
(4) glue mixer resin added is d unit (%), and statement is glued and the weight percent of over dry flaking.
(5) current generation sprinkling fire retardant adhesion amount (refers to that the sprayed weight for being adsorbed onto flaking of fire retardant accounts for over dry plane
The weight percent of piece) it calculates according to the following formula:
X=(p-n/ (1+d)) × m/ ((1-n/ (1+d)) × (1-m-p)) × 100%.
3, the flame retardant effect detection of fire-retardant flaking
Detection method:
(1) fire-retardant flaking is dried 10 minutes in 100 ± 2 DEG C of baking ovens, is then placed on alcolhol burner and burns, visually judges flaking
It is ignited the required time, is denoted as duration of fire resistance.According to whether the duration of fire resistance for reaching the requirement of this step judges that the flaking is
The no flame retardant effect for reaching the step.
(1) it samples, is spaced 30 seconds at the inspection door below spiral extruder, point 3 sub-samplings are uniformly mixed.From mixing
Flaking in randomly select 50 flakings the 40% of standard flaking area (area be not less than).
(2) flaking is put into 100 ± 2 DEG C of baking oven layings uniform, no superposition, dries 10 minutes.
(3) in calm show window, alcolhol burner is lighted, one jiao that fire-retardant flaking is vertically clamped with fixture is placed on alcolhol burner
Side, the minimum angle of flaking is located at alcolhol burner flame envelope center.Observe flaking combustion case, the time that record flaking is ignited, Yi Jiyi
After flame time and smoldering time after opening alcolhol burner.
The acceptability criteria of flaking anti-flammability is as shown in table 1.
Table 1.
Anti-flammability makes a decision result with fire-retardant qualification rate:
Fire-retardant qualification rate=(flaking quantity/flaking total quantity of anti-flammability qualification) × 100%.
4, finished product plate (fire-retardant OSB plate) anti-flammability rapid detection method
(1) 200mm wide batten is longitudinally taken in inspection production board edges of boards, respectively takes one piece from batten middle and batten both ends
100mm wide wooden unit obtains two pieces of small planks of 200mm × 100mm, marks；
(2) cut from middle by remaining production board is longitudinal, take 200mm wide batten from the place of cutting, from batten middle and
Batten both ends respectively take one piece of 100mm wide wooden unit, obtain two pieces of small planks of 200mm × 100mm, mark；
(3) 4 pieces of templates do flame retardant effect inspection with alcolhol burner respectively
(4) in calm show window, alcolhol burner is lighted, one jiao that template is vertically clamped with fixture is placed in above alcolhol burner, sample
The minimum angle of plate is located at alcolhol burner flame envelope center.Template combustion case is observed, records its time being ignited, and remove alcolhol burner
After flame time and smoldering time afterwards.
(5) when template have alcolhol burner it is combustion-supporting when 300 seconds in be not ignited, alcolhol burner removes rear every piece of specimen surface without bright
Fire, smoldering time≤2 second determine that inspection production board anti-flammability is qualified.When template ignites, in senseless anger, smoldering time above-mentioned
Any one it is unqualified, determine inspection production board anti-flammability it is unqualified.
2. embodiment of table, 2 each process technological parameter and testing result
3. embodiment of table, 3 each process technological parameter and testing result
4. embodiment of table, 4 each process technological parameter and testing result
5. embodiment of table, 5 each process technological parameter and testing result
The physical performance data of the fire-retardant OSB production board of table 6.
Note: " ⊥ " is represented vertically, and " ‖ " represents parallel；
Oriented shaving board finished product combustibility test method of the present invention is according to GB/T 20284 " construction material and product monomer
Combustion test ", GB/T8626 " construction material combustibility test method " tested, according to GB 8624-2012 " Building wood
Material and classification of combustion properties of building materials and products " it defines the level.The finished product combustibility of embodiment 2-5 reaches fire retardant B1(B-s1, d0, t1)
Grade.
Embodiment 6
Using (1) flaking the step of embodiment 2, after ten minutes, knife ring is detected using infrared temperature flaking immediately after exiting
Instrument monitors knife circumstance temperature degree.Every batch of timber need to dig 4 knives, about 1 minute time-consuming, monitor 40 batches.
Embodiment 7
Embodiment 6 is repeated, the difference is that using resistance used in water alternate embodiment 2 identical with 6 temperature of embodiment
Combustion agent solution cools down knife ring.
The knife circumstance temperature degree monitoring result of embodiment 6 and 7 is as shown in the following table 7 and 8.
7. embodiment of table, 6 temperature monitoring data
Note: environment temperature: 23.4 DEG C, water temperature: 25 DEG C.
8. embodiment of table, 7 temperature monitoring data
| Serial number | Temperature/DEG C | Serial number | Temperature/DEG C | Serial number | Temperature/DEG C | Serial number | Temperature/DEG C | Serial number | Temperature/DEG C |
| 1 | 33.4 | 9 | 33.2 | 17 | 33.7 | 25 | 34.5 | 33 | 35.2 |
| 2 | 36.5 | 10 | 32.0 | 18 | 34.0 | 26 | 35.6 | 34 | 35.2 |
| 3 | 35.0 | 11 | 36.9 | 19 | 35.2 | 27 | 35.5 | 35 | 33.2 |
| 4 | 35.7 | 12 | 35.5 | 20 | 35.0 | 28 | 32.4 | 36 | 33.8 |
| 5 | 35.8 | 13 | 34.5 | 21 | 34.2 | 29 | 33.7 | 37 | 34.6 |
| 6 | 37.0 | 14 | 34.8 | 22 | 33.3 | 30 | 34.3 | 38 | 33.6 |
| 7 | 34.0 | 15 | 36.6 | 23 | 33.4 | 31 | 34.3 | 39 | 32.3 |
| 8 | 33.9 | 16 | 34.6 | 24 | 32.1 | 32 | 36.1 | 40 | 33.0 |
Note: environment temperature: 23.4 DEG C, water temperature: 25 DEG C.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. the oriented wood chipboard production system of fire retardant spray structure is arranged, which is characterized in that oriented wood chipboard production system
System include: flaking device, wet flaking transmission device, wet flaking feed bin, drying device, dry flaking transmission device one, screening plant,
After-treatment device after dry flaking feed bin, dry flaking transmission device two, glue mixing device, laying device, hot-press arrangement, hot pressing and
Fire retardant spray structure；
The fire retardant spray structure and the flaking device, dry flaking transmission device one and/or dry flaking transmission device two are mixed
Adhesive dispenser and/or laying device connection；
Preferably, the after-treatment device after the hot pressing includes fire retardant spray structure；
Preferably, the fire retardant spray structure includes fire retardant storage tank, spray head (or atomizer, feeder for solid materials) and connection
Fire retardant storage tank and spray head or the fire retardant conveyance conduit for connecting fire retardant storage tank and atomizer；
Preferably, with the flaking device, dry flaking transmission device one and/or dry flaking transmission device two, glue mixing device and/or
The fire retardant spray structure of laying device connection is selected from fire retardant spray structure one, fire retardant spray structure two, fire retardant
One of spray structure three, fire retardant spray structure four are a variety of；
Preferably, the fire retardant spray structure in the after-treatment device after the hot pressing is fire retardant spray structure five.
2. production system according to claim 1, which is characterized in that the fire retardant spray structure one is filled with the flaking
It sets and is connected；Wherein, the flaking device further includes knife ring and the blade that is distributed on knife ring, and the spray head is along the knife ring
Peripheral distribution；
The angle of the blade and knife ring is selected from 24-35 degree；
The spray head is 0~4cm at a distance from knife ring periphery；
Angle≤90 degree of the cutting edge of the spray angle of the spray head and the blade.
3. production system according to claim 1 or 2, which is characterized in that the fire retardant spray structure two is done with described
Flaking transmission device one is connected；
Preferably, the dry flaking transmission device one is arranged between the drying device and the screening plant, the dry plane
Piece transmission device further include: belt, blanking channel, dispersing device and spiral extruder；The blanking channel is connected with belt,
The dispersing device is arranged in blanking channel；The lower section of blanking channel is arranged in the spiral extruder；
Preferably, the spray structure two is connected with the blanking channel inner wall of the blanking channel and/or the dispersing device.
4. production system according to claim 1 or 2, which is characterized in that the fire retardant spray structure two is done with described
Flaking transmission device two is connected；Wherein, the dry flaking transmission device two includes belt, dispersing device and blanking slope；It is described
Dispersing device includes breaing up roller and bored roll, the top broken up roller and be evenly distributed in blanking slope, the bored roll
The lower section on the blanking slope is set；
It wherein, include spray head and fire retardant transfer pipeline in the spray structure two, roller and/or sky are being broken up in the spray head setting
On heart roller.
5. production system according to claim 1-4, which is characterized in that the fire retardant spray structure three and institute
It states glue mixing device to be connected, one end of the glue mixing device connects upper blanking port, and the other end connects whereabouts material mouth；
Preferably, the fire retardant spray structure three includes fire retardant atomizer, fire retardant storage tank and fire retardant transfer pipeline；
Preferably, the glue mixing device is drum-type glue mixer, internal setting adhesive atomizer and fire retardant atomizer；It is excellent
Selection of land, the adhesive atomizer and fire retardant atomizer are alternately arranged.
6. production system according to claim 1-5, which is characterized in that the fire retardant spray structure four and institute
Laying device is stated to be connected；Wherein, the laying device is arranged between the glue mixing device and hot-press arrangement, the dress of mating formation
It sets including slab scale；
Preferably, the spray head in the spray structure four is vertically set on the top of the slab；
Preferably, the fire retardant spray structure four includes towards the positive first row spray head of plate and towards slab lower backside
The second row spray head of belt.
7. production system according to claim 1-5, which is characterized in that the after-treatment device after the hot pressing
In include fire retardant spray structure five, and the fire retardant spray structure five further comprises travel switch one and travel switch
Two；
Preferably, the fire retardant spray structure five further includes towards the positive first row spray head of plate and towards plate back
Second row spray head.
8. the method that any one of the claim 1-7 oriented wood chipboard production system produces fire-retardant oriented wood chipboard, feature
It is, the method includes the steps: in flaking process, dry flaking transmission process, glue mixing process and postprocessing working procedures, to plane
Piece sprays retardant solution；
Preferably, the dry flaking transmission process includes dry flaking into the transmit process before dry flaking feed bin, and/or, it does
Flaking is sent to the process of glue mixing process from dry flaking feed bin；The postprocessing working procedures include the treatment process after hot pressing；
Preferably, described method includes following steps:
(1) with the rotation of knife ring, blade is to wood cutting flaking, and at the same time, retardant solution is along perpendicular to blade knife
The direction of sword is equably sprayed on the flaking；
(2) after drying, dry flaking is before entering dry flaking feed bin, to whereabouts in blanking channel for flaking obtained by step (1)
Dry flaking spray retardant solution, dry flaking sequentially enters dry flaking feed bin later, subsequently enters glue mixing device；And/or
(3) it is directly entered dry flaking feed bin after flaking obtained by step (1) is dry, the dry plane sent out from dry flaking feed bin
Piece sprays retardant solution when breaing up to the dry flaking in transmit process before entering glue mixing process, and dry flaking enters later
Glue mixing device；
(4) after dry flaking enters glue mixing device, fire retardant and adhesive are being sprayed simultaneously to flaking, is sending to and mats formation after the completion of sprinkling
Process；
(5) retardant solution spraying to steel slab surface and belt in process of mating formation, slab enters hot pressing process after the completion of sprinkling,
Hot pressing obtains fire-retardant oriented wood chipboard；And/or
(6) after the completion of step (4), the plate through mating formation enters hot pressing process, in postprocessing working procedures after hot-pressing to
Plate tow sides spray retardant solution, obtain fire-retardant oriented wood chipboard.
9. according to the method described in claim 8, it is characterized in that, the fire retardant is selected from water in step (1), (2) and (3)
Dissolubility fire retardant；
Preferably, in step (4), the fire retardant is in solid form and/or liquid form adds.
10. method according to claim 8 or claim 9, which is characterized in that in step (5) and step (6), the fire retardant choosing
From the combination of at least one of guanylurea phosphate and boric acid, borax and Guanidine Sulfamate 99；
Preferably, the mass ratio of adhesive described in step (4) and fire retardant is 1:(0.1-3).
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| CN111015880A (en) * | 2019-12-24 | 2020-04-17 | 山东省林业科学研究院 | Large-piece wood shaving glue applying flame-retardant device |
| US20220204781A1 (en) * | 2019-06-13 | 2022-06-30 | Arxada, LLC | Fire-Retardant Oriented Strand Board (OSB) |
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