CN109773935A - A kind of multiplexing section addition fire retardant improves the production system and method for oriented wood chipboard flame retardant property - Google Patents
A kind of multiplexing section addition fire retardant improves the production system and method for oriented wood chipboard flame retardant property Download PDFInfo
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- CN109773935A CN109773935A CN201811642378.6A CN201811642378A CN109773935A CN 109773935 A CN109773935 A CN 109773935A CN 201811642378 A CN201811642378 A CN 201811642378A CN 109773935 A CN109773935 A CN 109773935A
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- flaking
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Abstract
The invention discloses production systems and method that a kind of multiplexing section addition fire retardant improves oriented wood chipboard flame retardant property.The particieboard production system includes: the after-treatment device and fire retardant spray structure after wet flaking feed bin, wet flaking transmission device two, 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, hot pressing；The fire retardant spray structure is connected with the wet flaking transmission device two, dry flaking transmission device one and/or dry flaking transmission device two, glue mixing device, laying device and/or hot-press arrangement.The present invention is sprayed using multi-process, and flaking absorbs sufficiently, and fire retardant is evenly distributed, and avoids that plate is fire-retardant unqualified or sprinkling is excessive, and wood shavings surface has little time to absorb, and fire retardant is caused to be lost waste.Handle obtained fire-resistant-chipboard, excellent flame retardancy；Physical property is suitable with the particieboard 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 multiplexing section addition is fire-retardant
The production system and method for agent raising oriented wood chipboard flame retardant property.
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 production system of oriented wood chipboard, and the particieboard production system includes: flaking device, wet
Flaking transmission device one, wet flaking feed bin, wet flaking transmission device two, drying device, dry flaking transmission device one, screening dress
It sets, 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 with the wet flaking transmission device two, dry flaking transmission device one and/or dry
Flaking transmission 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, valve (such as gate valve and
At least one of ball valve).For another example, the fire retardant conveyance conduit may include conveying main line and conveying branch, the conveying
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
Flow sensor, gate valve and/or ball valve.
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, the blender and weight transmitter of setting in the inner.Preferably, the weight transmitter is uniformly arranged on the preparing tank tank
The quantity of the bottom of body, the weight transmitter can be one, two or more, for example, the number of the weight transmitter
Amount can be three.Further, the fire retardant preparing tank and the fire retardant, which store up, can be set matter on tank connected pipeline
Measure flowmeter and/or pump.Further, the blender is preferably electric mixer.Preferably, the fire retardant preparing tank is also
Piping connection can be passed through with water tank；Preferably, it can be set on the connecting line of the fire retardant preparing tank and water tank
Pump.
The apparatus according to the invention is passed with the wet flaking transmission device two, dry flaking transmission device one and/or dry flaking
Fire retardant spray structure can be selected from by sending the fire retardant spray structure of device two, glue mixing device and/or laying device connection
One, one of fire retardant spray structure two, fire retardant spray structure three, fire retardant spray structure four or a variety of.Preferably, institute
Fire retardant spray structure one is stated to be connected with the wet flaking transmission device two；Preferably, the fire retardant spray structure two with
The dry flaking transmission device one and/or the dry flaking transmission device two are connected；Preferably, the fire retardant spray structure
Three are connected with the glue mixing device；Preferably, the fire retardant spray structure four and the laying device and/or with the heat
Pressure device is connected.
The wet flaking transmission device two is that wet flaking feed bin is sent out, the device used in blanking operation.It is preferred that
Ground, the wet flaking are the wet flakings obtained after flaking process.Preferably, the wet flaking can be unattached or attachment
The wet flaking of fire retardant.
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 and the wet flaking transmission device two-phase
Connection.The wet flaking transmission device two includes blanking channel, atomizing cup and screw extrusion transmission structure；
Atomizing cup is provided with below the blanking channel；Atomization structure is set in the atomizing cup；
Screw extrusion transmission structure is provided with below the atomizing cup.
The spray structure one can be set in the atomizing cup and/blanking channel.
For example, the atomizing cup includes cylinder and the intracorporal atomization structure of cylinder.Preferably, the cylinder can be along axial rotation
Turn, the atomization structure fixed setting.Preferably, the atomization structure includes: fire retardant atomizer and coupled resistance
Fire agent solution conveyance conduit.Preferably, the fire retardant atomizer is stored up by retardant solution conveyance conduit and retardant solution
Tank is connected.In atomization structure, atomizer is arranged at the central axis of the atomizing cup.In atomization structure, the spray of atomizer
The central axis for penetrating direction and atomizing cup is perpendicular.In atomization structure, the quantity of the atomizer is selected from 1-20, preferably 1-
10, such as 4,5,6,7,8.In atomization structure, the distance between adjacent atomizer is 20-80cm, preferably
30-70cm, such as 50cm.Flaking is between the cylinder and atomization structure of atomizing cup.Preferably, the cylinder inboard wall is also set up
There is protrusion member.The protrusion member can promote the price hike of material when rotated, with increase be atomized after fire retardant contact
Area.
For example, the screw extrusion transmission structure is to squeeze transporting threads.
For example, may include dispersing device in the blanking channel, for example, the dispersing device can for bored roll or
Solid roll；Preferably bored roll, the bored roll can be to break up roller.Spray head setting in the spray structure one exists
It is described to break up on roller.The injection direction of the spray head and the central axis for breaing up roller are perpendicular.The quantity of the spray head is selected from 1-
30, preferably 2-20, such as 5,10,15,20.According to an embodiment of the invention, breaing up adjacent spray on roller
Head the distance between it is identical or different, be independently from each other 5cm or more, such as 10cm or more, as 10cm or more, 20cm with
Upper, 30cm or more, 40cm or more, such as 40cm；Tooth element is provided on the outer surface of roller for example, breaing up, the tooth-like part
Part is evenly distributed on the outer surface for breaing up roller.For example, the roller of breaing up can be rotated each independently.Preferably,
The roller of breaing up can also be electrically connected with motor.
For example, the quantity of the retardant solution storage tank can be one, two or more；Such as 1；As reality
Example, when the quantity of retardant solution storage tank is 1, spray structure and atomization structure share 1 retardant solution storage tank.Specifically
Retardant solution can be separately transported to spray head by retardant solution conveyance conduit by ground, retardant solution storage tank
And/or atomizer.
For example, distributor, the distribution can be set on fire retardant conveyance conduit in the fire retardant spray structure one
Device is located at conveying main line and conveys the centre of branch, and the distributor is used to for the retardant solution conveyed in main line being delivered to defeated
Send branch.
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.
It for example, the dispersing device can be the device that can break up flaking, such as can be bored roll.The spray
The outer surface of the bored roll is arranged in head.For example, tooth element is additionally provided on the outer surface of the bored roll, it is described
Tooth element is evenly distributed on the outer surface of the bored roll.For example, the spray head is evenly spaced in the bored roll
Outer surface, it is preferable that the distance between adjacent spray head can be independently from each other 5cm or more, such as 10cm or more, such as 10cm
Above, 20cm or more, 30cm or more, 40cm or more.For example, the outer surface of the setting angle of the spray head and the bored roll
Tangent line is perpendicular and spray head faces away from the outer surface of the bored roll.Further, the quantity of the bored roll can be with
For one, two or more.Preferably, the spacing phase when the bored roll quantity >=3, between every two bored roll
It is same or different, it is preferably identical.For another example, the bored roll can be connected to the motor and connect, and be driven by a motor hollow drum rotation.
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.
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.
Further, the spray head in the spray structure four is vertically set on the top of the slab.Preferably, the resistance
Combustion agent spray structure four includes towards the positive first row spray head of plate and towards the second row spray head of slab lower backside belt.
For example, the first row spray head is used to spray fire retardant to slab front, the second row spray head is used for slab lower backside
Belt sprays fire retardant.Preferably, the first row spray head and the setting position of second row spray head, the quantity of spray head and spray head
It position can be interlaced with each other.Preferably, the fire retardant sprinkling direction of the first row spray head and steel slab surface are perpendicular, and described the
The fire retardant sprinkling direction of two row's spray heads and slab lower backside belt surface are perpendicular.
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.
Wherein, the travel switch one and travel switch two are for detecting plate movement position.Enter when detecting plate
When fire retardant sprays region, fire retardant starts to spray；When detect plate leave fire retardant sprinkling region when, fire retardant stop spray
It spills.
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.
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 improve oriented wood chipboard flame retardant property using above-mentioned oriented wood chipboard production system
Method, which comprises transmit process, dry flaking transmission process, in glue mixing process and postprocessing working procedures in wet flaking,
Retardant solution is sprayed to flaking.Wherein, the wet flaking transmission process may include wet flaking sent out from wet flaking feed bin,
Process through blanking channel and atomizing cup, into before screw extrusion structure.Wherein, the dry flaking transmission process may include
Dry flaking enters the transmit process before dry flaking feed bin, and/or, dry flaking is sent to the mistake of glue mixing process from dry flaking feed bin
Journey.Wherein, the postprocessing working procedures may include the treatment process after hot pressing.
According to the technique and scheme of the present invention, the method includes the following steps:
(1) flaking sent out from wet flaking feed bin sprays retardant solution to wet flaking in blanking operation, sends to
It is dry；
(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 selected from being suitable for preparing the timber of particieboard, such as can for pine,
At least one of 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), (3) and (4), the fire retardant can be selected from known in the art
Water-soluble flame retardant any one, two or more.For example, the fire retardant can containing ammonium polyphosphate, ammonium phosphate,
Ammonium sulfate, borax, Amcide Ammate, sodium phosphate, guanylurea phosphate, Guanidine Sulfamate 99, poly- phosphorus biguanides, biphosphate guanidine, phosphoric acid
At least one of hydrogen bisguanides, guanidine sulfate etc.；Preferably, the fire retardant can be ammonium polyphosphate, ammonium phosphate and ammonium sulfate
Mixture, borax, Amcide Ammate, sodium phosphate and ammonium phosphate mixture, guanylurea phosphate, boric acid, borax and/or amino sulphur
The mixture of sour guanidine.Illustratively, in the fire retardant can containing ammonium polyphosphate (such as the degree of polymerization be lower than 20, such as 6,8,
10 ammonium polyphosphate), ammonium phosphate and ammonium sulfate, such as mass ratio (1-3): (3-5): (such as the degree of polymerization is lower than 1 ammonium polyphosphate
20, such as 6,8,10 ammonium polyphosphate), ammonium phosphate and ammonium sulfate；Illustratively, the fire retardant can contain borax, amino
Ichthyodin, sodium phosphate and ammonium phosphate, such as mass ratio are borax, Amcide Ammate, sodium phosphate and the ammonium phosphate of 2:3:2:3.Institute
The concentration for stating fire retardant in retardant solution can be 10-40wt%, such as 15-35wt%, 25-32wt%.Preferably, described
The temperature of retardant solution can be 10-45 DEG C, such as 20-35 DEG C.
According to the method for the present invention, in step (1), fire retardant, the adhesion amount of fire retardant are attached on the fire-retardant flaking
It can be 10-20%, such as 13-18%, 14-16%；The adhesion amount of the fire retardant is attached to plane after referring to fire retardant sprinkling
The fire retardant weight of piece accounts for the weight percent of over dry flaking, wherein the weight of the fire retardant is in terms of solid flame retardant.It is described
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 35-47wt% before sprinkling retardant solution.Spray
After spilling retardant solution, the humidity of the flaking can be 35-55wt%, such as 40-55wt%.
The pressure of the extruding can be 1N-50N, preferably 1N-20N, such as 10N；The time of the extruding can be
1-7 seconds, preferably 3-5 seconds.
According to the method for the present invention, in step (2), according to the method for the present invention, in step (2), the dry flaking contains
Water rate can be 2.0-3.5wt%, such as moisture content can for 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 6-8wt%, such as 6.5-7.5wt% after sprinkling fire retardant.
According to the method for the present invention, according to the method for the present invention, in step (3), plane is attached to after the fire retardant sprinkling
On piece, the adhesion amount of the fire retardant refer to that the fire retardant weight that flaking is attached to after fire retardant sprinkling accounts for the weight of over dry flaking
Percentage, such as 1.0-3.5%, such as 1.6-3.0,1.8-2.5%；Wherein the weight of the fire retardant is with solid flame 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 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 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, the adhesion amount of the fire retardant refers to resistance
The fire retardant weight that flaking is attached to after combustion agent sprinkling accounts for the weight percent of over dry flaking, such as 1.5-6%, such as 2-5%,
2-3%；Wherein the weight of the fire retardant is in terms of solid flame retardant.The attachment includes with absorption, infiltration or other modes knot
It is bonded to the state on flaking surface and its inside.
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:(0.3-0.6), such as 9:4.
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 3-10L/min, such as
4-6L/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 9-15wt%, such as 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 0.3-2L/min, example
Such as 0.8-1.5L/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-
0.3wt%；Wherein the weight of the fire retardant is in terms of solid flame retardant.The attachment includes with absorption, infiltration or other modes
It is bound to the state on flaking 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 present invention innovatively proposes that increasing additional fire retardant in wet flaking process sprays process, improves whole on the whole
The time of contact of flaking and fire retardant in a technique, be conducive to fire retardant absorb it is more abundant, more uniformly spread, avoid flaking
Surface contacts in individual processes with excessive fire retardant, and fire retardant is caused to be lost waste.Obtained by the device of the invention and technique
Production board regain it is low, do not migrate, be not precipitated, is anti-mildew, is corrosion-free, colour stability is good.Using apparatus of the present invention
With the fire-retardant orientation flaking plate of process, excellent flame retardancy, flame retardant property grade reach fire retardant B1 rank；And orientation flaking
Plate good environmental protection does not contain formaldehyde；Physical property is suitable with OSB2 plate physical property, corrosion-resistant, thickness swelling rate
It 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 wet flaking transmission for being connected with spray structure one in 1 oriented wood chipboard production system of the embodiment of the present invention
The structural schematic diagram of device two；
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 structure of the glue mixing device for being connected with spray structure three in 1 particieboard production system of the embodiment of the present invention
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 hot-press arrangement 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- belt, 2- blanking port, 3- blanking channel, 4- bored roll, 5- pressure nozzle, 6- tooth element,
7- variable-frequency motor, 8- spiral extruder, 9- fire retardant storage tank, 10- electric mixer, 11- convey main line, and 12- conveys branch,
13- flow sensor, 14- impeller pump, 15- ball valve, 16- weighing belt, 17- mass flowmenter, 18- gate valve, 19- pump, the dry plane of 20-
Piece feed bin, 21- moisture probe, the atomization of 22- adhesive, 23- fire retardant atomizer, the upper blanking port of 24-, the whereabouts 25- material mouth, 26-
Scratch board conveyor, 27- slab, 28- slab level ground, 29- plate, 30- first row spray head, 31- first row spray head, 32- travel switch
One, 33- travel switch two, 34- break up roller, the wet flaking feed bin of 35-, 36- atomizing cup, 37- distributor.
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.
Retardant solution B 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 B.
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
Multiplexing section addition fire retardant as shown in Figure 1 improves the production system of oriented wood chipboard flame retardant property, production system
System includes: flaking device, wet flaking transmission device one, wet flaking feed bin, wet flaking transmission device two, 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, heat
After-treatment device and fire retardant spray structure after pressure；
Fire retardant spray structure one is connected with wet flaking transmission device two, and fire retardant spray structure two and dry flaking transmit
Device one and/or dry flaking transmission device two are connected, and fire retardant spray structure three is connected with glue mixing device, fire retardant sprinkling
Structure four is connect with laying device.The wet flaking transmission device two be wet flaking feed bin send out, in blanking operation and
Device used in atomizing cup whipping process.Wet flaking is the wet flaking obtained after flaking process.Post-processing after hot pressing
Fire retardant spray structure in device is fire retardant spray structure five.
Fire retardant spray structure four and fire retardant spray structure five are advantageously used in supplement or enhance oriented wood chipboard
Surface layer flame retardant property.
Screening plant includes the dry flaking screening plant in surface layer and the dry flaking screening plant of sandwich layer, and dry flaking feed bin is divided into surface layer
Dry flaking feed bin and the dry flaking feed bin of sandwich layer, glue mixing device are divided into the dry flaking glue mixing device in surface layer and the dry flaking glue mixing dress of sandwich layer
It sets.
Fire retardant spray structure one to five includes fire retardant storage tank, pressure nozzle or fire retardant atomizer and connection
Fire retardant storage tank and pressure nozzle, the fire retardant conveyance conduit for connecting fire retardant storage tank and fire retardant atomizer.Fire retardant conveying
At least one of mass flowmenter, flow sensor, pump and valve (such as gate valve or ball valve) are set on pipeline.Fire retardant is defeated
Sending pipeline includes conveying main line and conveying branch, conveys branch circuit parallel connection.It conveys and mass flowmenter and/or pump is set on main line, it is defeated
Send branch road setting flow sensor, gate valve and/or valve.
As shown in Fig. 2, fire retardant spray structure one is connected with wet flaking transmission device two, wet flaking transmission device two is wrapped
It includes blanking channel 3, break up roller 34, atomizing cup 36 and spiral extruder 8；Mixing drum 36, atomizing cup 36 are connected below blanking channel 3
Interior setting atomization structure is provided with spiral extruder 8 below atomization structure.
Fire retardant spray structure one with break up roller 34 and atomizing cup is connect.
The injection direction of pressure nozzle 5 and the central axis for breaing up roller 34 are perpendicular in fire retardant spray structure one.It breaks up
The quantity for the pressure nozzle being arranged on roller 34 is 6, and the distance between adjacent spray head is 50cm.It breaks up and is set on the outer surface of roller 34
It is equipped with tooth element 6, tooth element 6 is evenly distributed on the outer surface for breaing up roller 34.Roller 34 is broken up also to be electrically connected with variable-frequency motor 7
It connects.
Atomization structure includes fire retardant atomizer 23, and fire retardant atomizer 23 is arranged at the central axis of mixing drum 36,
The injection direction of fire retardant atomizer 23 and the central axis of mixing drum 36 are perpendicular.The quantity setting 6 of fire retardant atomizer 23
It is a.The distance between adjacent atomizer is 50cm.
Spray structure one and atomization structure share a retardant solution storage tank.Retardant solution storage tank is molten by fire retardant
Retardant solution is respectively delivered to spray head and atomizer by liquid conveyance conduit.
Distributor 37 is set on the fire retardant conveyance conduit in fire retardant spray structure one, and distributor 37 is located at conveying main line
With the centre of conveying branch, distributor is used to the retardant solution conveyed in main line being delivered to conveying branch.
Such as Fig. 3 (A) shown device, fire retardant spray structure two is connected with dry flaking transmission device one.Wherein, dry flaking
Transmission device one is arranged between drying device and screening plant, and dry flaking transmission device includes: belt 1, blanking channel 3, sky
Heart roller 4 and spiral extruder 8；Blanking channel 3 is connected with belt 1, and two bored rolls 4 are arranged in blanking channel 3；Spiral shell
The lower section of blanking channel 3 is arranged in rotation squeezer 8.The blanking port 2 and bored roll of fire retardant spray structure two and blanking channel 3
4 are connected.
Pressure nozzle 5 in fire retardant spray structure two is uniformly arranged on the outer surface of bored roll 4.Pressure nozzle 5
The outer surface tangent line that angle and bored roll 4 is arranged is perpendicular and pressure nozzle 5 is oriented away from the outer surface of bored roll 4,
The distance between adjacent spray head is selected from 30cm.Equally distributed tooth element 6 is additionally provided on the outer surface of bored roll 4.It is empty
Heart roller 4 is connected with variable-frequency motor 7, drives hollow drum 4 to rotate by variable-frequency motor 7.
As shown in Fig. 3 (B), the inner wall that the pressure nozzle 5 in fire retardant spray structure two is additionally arranged at blanking channel 3 is (interior
In three planes of sidewall upper, middle-end and low side) and blanking channel 3 the top of blanking port 2.When the setting of pressure nozzle 5 is being fallen
When expecting the inner wall in channel 3, the tangent line of the setting angle of pressure nozzle 4 and the inner wall of blanking channel 19 or inner wall is perpendicular and court
It is sprayed to dry flaking.When pressure nozzle 5 is arranged at 2 top of blanking port, at the top of the setting angle and blanking port 2 of pressure nozzle 5
Plane is perpendicular and spray head is oriented down.Pressure nozzle 5 is evenly distributed in 2 top of inner wall and blanking port of blanking channel 3.
Device as shown in Figure 4, fire retardant spray structure two are connected with dry flaking transmission device two.Wherein, dry flaking passes
Device two is sent to connect with dry flaking feed bin 20 comprising belt 1 breaks up roller 34, blanking slope and bored roll 4；
The top that roller 34 is evenly distributed in blanking slope is broken up, the lower section on blanking slope is arranged in bored roll 4.Break up roller
Quantity is that seven adjacent center distance between axles for breaing up roller are 30cm, and every is broken up roller and can independently rotated；Bored roll
Quantity is one.
Pressure nozzle 5 in fire retardant spray structure three is arranged to be broken up on roller 34 at each, as shown in figure 4, every is beaten
Dissipate 4 pressure nozzles of uniformly arranging on roller 34.
Pressure nozzle 5 is also uniformly arranged on bored roll 4, and tooth element 6, tooth element 6 are also set up on bored roll 4
It is staggered with pressure nozzle 5.Bored roll 4 is also electrically connected with variable-frequency motor 7.
Weighing belt 16 is arranged in lower section at the blanking of dry flaking transmission device two, sprays the flaking of fire retardant through bored roll
After 4 break up, fall on weighing belt 16.Moisture probe 21 is arranged in the tail portion of weighing belt 16, for institute after detection sprinkling fire retardant
The moisture content of the fire-retardant flaking obtained.
The 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, and accordingly, dry flaking passes
Device two is sent to be 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 of watch core layer
Two 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 24, the other end connect whereabouts material mouth 25.Upper blanking port 25 is connect with weighing belt 16, and whereabouts material mouth 25 and scraper plate transport
Machine 26 connects.
Glue mixing device selects drum-type glue mixer, internal setting adhesive atomizer 22 and fire retardant atomizer 23；Glue
The quantity of glutinous agent atomizer 22 and fire retardant atomizer 23 is respectively 3, and is alternately arranged.Fire retardant atomizer 23 passes through fire-retardant
Agent transfer pipeline is connected with fire retardant storage tank 9.Adhesive atomizer 22 passes through adhesive transfer pipeline and adhesive storage tank phase
Connection.
Fire retardant spray structure three includes fire retardant atomizer 30, fire retardant storage tank 9 and fire retardant transfer pipeline.
Wherein, glue mixing device is divided into 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 28；Slab 27 is uniformly laid on slab scale 28.Fire retardant spray
Spilling structure four includes that the second row pressure towards the positive first row pressure nozzle 5 of plate and towards slab lower backside belt is sprayed
First 5, first row pressure nozzle 5 is vertically set on the top of slab 27, for spraying fire retardant to slab front.The second row
Pressure nozzle 5 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 5 are to cover all slabs 27.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 described the
Five fire retardant spray structures further comprise first stroke switch 32 and second stroke switch 32.It includes court that fire retardant, which sprays region,
To the positive first row spray head 30 of plate 29 and towards the second row spray head 31 at 29 back side of plate.First row spray head 30 is used for plate
29 front sprinkling fire retardant of material, second row spray head 31 are used to spray fire retardant to 29 back side of plate.First row spray head 30 and second
The position for arranging the setting position, the quantity of pressure nozzle 4 and pressure nozzle of spray head 31 corresponds to each other.First row spray head 30 and second
Arrange fire retardant sprinkling direction and 29 perpendicular of plate of spray head 31.
Travel switch 1 and travel switch 2 33 are for detecting 29 movement position of plate.Enter resistance when detecting plate 29
When firing agent sprinkling region, fire retardant starts to spray；When detect plate 29 leave fire retardant sprinkling region when, fire retardant stop spray
It spills.
Fire retardant spray structure one to five further includes fire retardant preparing tank, and fire retardant preparing tank and fire retardant storage tank pass through pipe
Road connection.Fire retardant preparing tank includes preparing tank, electric mixer and weight transmitter, weight transmitter to be uniformly arranged on
The bottom of tank is prepared, the quantity of weight transmitter is three.Fire retardant preparing tank and fire retardant store up on tank connected pipeline
Also set up mass flowmenter, gate valve, ball valve and/or impeller pump.
Fire retardant preparing tank is set on the connecting line of fire retardant preparing tank and water tank also with water tank by piping connection
Set impeller pump.
Particieboard production system further includes PLC controller, and PLC controller and pump, impeller 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.
Connecting line, fire retardant preparing tank and the water storage of fire retardant conveyance conduit, fire retardant preparing tank and fire retardant storage tank
The material of the connecting line of tank is stainless steel material.
Embodiment 2
Flaking specification: width 5-40mm, thickness 0.4-0.8mm, length 100-180mm.
Using the production system of embodiment 1, the method for promoting oriented wood chipboard flame retardant property, this method includes following step
It is rapid:
(1) flaking sent out from wet flaking feed bin, to wet flaking in blanking operation and in atomizing cup whipping process
Retardant solution A (temperature of retardant solution A is 25 ± 5 DEG C) is sprayed, drying is sent to；
(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) retardant solution A (temperature is 25 ± 5 DEG C) and gluing agent solution are sprayed simultaneously to flaking in glue mixing process；
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 9:4.
(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 B (temperature is 50 DEG C)；Hot pressing obtains fire-retardant oriented wood chipboard.
Fire retardant fountain height (as pump discharge), the concentration of retardant solution and flaking are before and after spraying fire retardant
The testing result of moisture content, 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.
Using the production system of embodiment 1, the method for promoting oriented wood chipboard flame retardant property, this method includes following step
It is rapid:
(1) flaking sent out from wet flaking feed bin, to wet flaking in blanking operation and in atomizing cup whipping process
Retardant solution A (temperature of retardant solution A is 25 ± 5 DEG C) is sprayed, drying is sent to；
(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) retardant solution A (temperature is 25 ± 5 DEG C) and gluing agent solution are sprayed in glue mixing process simultaneously to flaking；
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 9:4.
(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 B (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 is 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.
(physical property presses GB/T 17657-2013 to the physical performance data of the fire-retardant OSB plate of the resulting finished product of embodiment 2-5
Detection) 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, when flaking face
When the surface area of the variant part of color is greater than the 30% of entire flaking total surface area, judge that flaking sprinkling uniformity is unqualified.
Uniformity is stated with uniformity qualification flaking Zhan total flaking percentage:
Uniformity=(uniformity qualification flaking quantity/flaking total quantity) × 100%.
(4) coverage rate: observing the fire retardant coverage condition on each flaking by flaking surface color, when flaking not by
When the area of coloured portions is greater than the 10% of entire flaking total surface area, judge that flaking sprinkling covering is unqualified.Spreadability with
Coverage rate makes a decision result:
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) flaking measurement of water-content coefficient before each process sprinkling fire retardant: the repeatedly sampling respectively nearby before carrying out the process,
Interval 30 seconds, 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
The 40% of area), 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 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.
Remarks: " ⊥ " 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.
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 particieboard production system of fire retardant spray structure is arranged, the particieboard production system includes: flaking device, wet plane
Piece transmission device one, wet flaking feed bin, wet flaking transmission device two, 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 wet flaking transmission device two, dry flaking transmission device one and/or dry flaking transmit
Device two, glue mixing device 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 and/or atomizer 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 wet flaking transmission device two, 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 are selected from fire retardant spray structure one, fire retardant spray structure
Two, one of fire retardant spray structure three, fire retardant spray structure four or a variety of；
Preferably, the fire retardant spray structure in the after-treatment device after the hot pressing is fire retardant spray structure five；
Preferably, the wet flaking transmission device two is that wet flaking feed bin is sent out, the device used in blanking operation.
2. production system according to claim 1, which is characterized in that the fire retardant spray structure one and the wet flaking
Transmission device two is connected；The wet flaking transmission device two includes blanking channel, atomizing cup and screw extrusion transmission structure；
Atomizing cup is provided with below the blanking channel；Atomization structure is set in the atomizing cup；
Screw extrusion transmission structure is provided with below the atomizing cup.
Preferably, the setting of spray structure one is in the atomizing cup and/blanking channel.
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；
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 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 may include that belt, dispersing device (such as are broken up
Roller and/or bored roll), blanking slope；The top broken up roller and be evenly distributed in blanking slope, the bored roll setting exist
The lower section on the blanking slope；
It preferably, include spray head and fire retardant transfer pipeline in the spray structure two, the spray head, which can be set, is breaing up roller
And/or on bored roll.
5. production system according to claim 1-4, which is characterized in that the fire retardant spray structure three and institute
Glue mixing device is stated to be connected；
Preferably, the fire retardant spray structure three includes fire retardant atomizer, fire retardant storage tank and fire retardant transfer pipeline.
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.
7. production system according to claim 1-5, which is characterized in that wrapped in the after-treatment device after hot pressing
Fire retardant spray structure five is included, and the fire retardant spray structure five further comprises travel switch one and travel switch two；
Preferably, the fire retardant spray structure five includes towards the positive first row spray head of plate and towards plate back
Two row's spray heads.
8. the method that any one of the claim 1-7 oriented wood chipboard production system improves oriented wood chipboard flame retardant property,
It is characterized in that, which comprises it is transmitted in process, dry flaking transmission process, glue mixing process and postprocessing working procedures in wet flaking,
Retardant solution is sprayed to flaking；
Preferably, the method includes the steps:
(1) flaking sent out from wet flaking feed bin sprays retardant solution to wet flaking in blanking operation, sends to dry
It is dry；
(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 selects in step (1), (2), (3) and (4)
From water-soluble flame retardant any one, two or more；
In step (5) and step (6), the fire retardant in guanylurea phosphate and boric acid, borax and Guanidine Sulfamate 99 extremely
A kind of few combination.
10. method according to claim 8 or claim 9, which is characterized in that the adhesive is polymeric isocyanate；The glue
The mass ratio of glutinous agent and step (4) described fire retardant is 1:(0.1-3), such as 1:(0.3-0.6), such as 9:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642378.6A CN109773935B (en) | 2018-12-29 | 2018-12-29 | Production system and method for improving flame retardant property of oriented strand board by adding flame retardant in multiple stages |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642378.6A CN109773935B (en) | 2018-12-29 | 2018-12-29 | Production system and method for improving flame retardant property of oriented strand board by adding flame retardant in multiple stages |
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| CN109773935A true CN109773935A (en) | 2019-05-21 |
| CN109773935B CN109773935B (en) | 2021-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110682394A (en) * | 2019-10-09 | 2020-01-14 | 寿光市鲁丽木业股份有限公司 | Flame-retardant high-temperature-resistant oriented strand board and preparation method thereof |
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| CN104227820A (en) * | 2014-08-27 | 2014-12-24 | 谭海韵 | Preparation method for fireproof oriented strand board |
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| CN1122745A (en) * | 1995-09-14 | 1996-05-22 | 南京林业大学 | Method for mfg. oriented structure shaving board |
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| CN110682394A (en) * | 2019-10-09 | 2020-01-14 | 寿光市鲁丽木业股份有限公司 | Flame-retardant high-temperature-resistant oriented strand board and preparation method thereof |
| CN110682394B (en) * | 2019-10-09 | 2022-03-29 | 寿光市鲁丽木业股份有限公司 | Flame-retardant high-temperature-resistant oriented strand board and preparation method thereof |
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| CN109773935B (en) | 2021-06-08 |
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