CN113601657A - Drying system for fiber gum dipping, sizing and additive synthesis - Google Patents
Drying system for fiber gum dipping, sizing and additive synthesis Download PDFInfo
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- CN113601657A CN113601657A CN202110751874.0A CN202110751874A CN113601657A CN 113601657 A CN113601657 A CN 113601657A CN 202110751874 A CN202110751874 A CN 202110751874A CN 113601657 A CN113601657 A CN 113601657A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a drying system for synthesizing fiber gum dipping sizing and additives in the technical field of high-density fiberboard processing, which comprises a trolley conveyer, wherein a plurality of trolleys connected end to end form a closed complete mesh belt conveyer, the trolleys are stably clamped on a track without separation, all the trolleys forming the trolley conveyer are synchronously and movably arranged on the track, the top of each trolley forming the trolley conveyer is provided with an opening, the system utilizes the existing artificial board equipment and process technology to continuously and automatically produce fiberboards with ultrahigh density and excellent mechanical property, can better promote an adhesive to uniformly enter the surface of a fiber and the inside of each microstructure, simultaneously improves the comprehensive utilization rate of a wood material, can manufacture the fiberboards with ultrahigh density and ultrahigh strength and excellent physical and mechanical properties, and has high physical and mechanical properties, a high density fiberboard with low water absorption thickness expansion rate.
Description
Technical Field
The invention relates to the technical field of high-density fiberboard processing, in particular to a drying system for fiber gum dipping, sizing and additive synthesis.
Background
The medium-density fiberboard industry is not only a resource comprehensive utilization industry, but also a resource dependent industry, and is also an industry with relatively high energy consumption. The density of the medium-density fiberboard is 650 plus 800 kg/cubic meter, the density of the high-density fiberboard is more than or equal to 880 kg/cubic meter, and the density of the low-density fiberboard is 450 plus 650 kg/cubic meter, and the medium-density fiberboard is mainly used for building interior decoration, floor base materials, furniture manufacture, vehicle and ship decoration, household appliance shell manufacture, carving of various artware embossments and the like.
The medium-density fiberboard is a board produced by adopting a dry method or wet method production process by taking artificial fast-growing small dimension timber, brush timber, logging residues and processing residues as main raw materials, and the production process comprises a preparation working section, a fiber preparation working section, a forming hot-pressing working section and a finished product processing working section; the fiber preparation section comprises the working procedures of hot grinding, glue mixing, sizing, drying and the like.
At present, a first-level flash dryer is usually adopted for drying in a fiber preparation working section of a fiberboard production line and comprises a drying fan, a drying pipeline, an expansion joint, a safe explosion-proof disc, a discharging rotary valve and 1-2 drying cyclone separator devices. The flash type dryer has the main function of quickly drying wet wood fibers (with the water content of 85-90%) coated with glue to dry fibers with the water content of only 8-15% so as to be beneficial to the use of a subsequent paving, forming and hot-pressing working section; wherein the temperature of the tail gas outlet of the drying cyclone separator is 50-55 ℃, and the emission concentration of the tail gas particulate matters is 50-175 mg/m3The formaldehyde emission concentration is 5 mg-15 mg/m3The blackness of the flue gas is less than or equal to 1, and the water content is less than or equal to 0.1kg/m3And the air volume is large and reaches 10-70 ten thousand Nm3H, pressure is about 3500-5000Pa, and wind speed is 8-25 m/s; and tail gas generated by the drying cyclone separator in the fiber board industry at the present stage is directly discharged to the air after being dedusted by a water film, and the tail gas of the drying cyclone separator at the temperature of 50-55 ℃ is not further utilized. In order to save water, some enterprises adopt a secondary cyclone separator to treat tail gas, so that the dust emission amount of the tail gas is further reduced.
At present, the preparation of the fiber board on the market mainly adopts a glue spraying process, and the density is concentrated between 0.6 and 1.0g/cm 3. The density of common wood fibers is 1.5g/cm3, the internal porosity of a fiberboard with the density of 0.8g/cm3 is about 46.7%, the pores of the board are too many, stress concentration of the material is easily caused, and meanwhile, adhesives cannot penetrate into all levels of microstructure structures of plant fibers, so that a series of problems of low mechanical property and the like are caused, and the wood fiber can not be applied to structural materials.
In the prior art, plant fibers are soaked in an adhesive to enable the adhesive to penetrate between the fibers, the high-density fiberboard is prepared by spraying the adhesive again after drying, but the adhesive with the density of 0.88g/cm3 is needed, the price of the adhesive is high, the process is complex, the fibers are soaked, taken out and dried, then dried for a long time again, and then sprayed with the adhesive again, the production process is poor in continuity degree, low in production efficiency, low in static bending strength and elastic modulus of the board, high in water absorption thickness expansion rate of 11.5%, and easy to expand in the later period;
the hemp straw is also crushed and then is applied with adhesive to be hot-pressed into a board, and the fiberboard has low physical and mechanical properties, high water absorption thickness expansion rate, and low static bending strength and elastic modulus.
Based on the above, the invention designs a drying system for fiber gum dipping and additive synthesis, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a drying system for synthesizing fiber gum dipping sizing and additives, which utilizes the existing artificial board equipment and process technology to continuously and automatically produce fiberboards with ultrahigh density and excellent mechanical property, can better promote adhesives to uniformly enter the fiber surfaces and the inside of each microstructure, and simultaneously also improves the comprehensive utilization rate of wood materials.
The invention is realized by the following steps: a fiber dip size and additive synthesis drying system comprising:
the trolley conveyer is a closed complete mesh belt conveyer formed by a plurality of trolleys connected end to end, is stably clamped on the rail without separation, is formed by arranging all the trolleys of the trolley conveyer on the rail in a synchronous moving mode, and is provided with an opening at the top; the four corners of the top of the trolley net frame are flexible folding net corners capable of being contracted or expanded, the aperture of the mesh of the trolley 11 is not more than six times of the diameter of the cross section of the fiber, and the aperture of the rectangular net frame of the trolley 11 is less than one fifth of the length of the fiber;
a plurality of driving rollers are uniformly distributed on the track, and the trolley conveyor is driven by the driving rollers;
the glue pool is a pool filled with an adhesive and provided with an opening at the top, the trolleys of at least two trolley conveyers are completely submerged below the liquid level of the adhesive in the glue pool, two hydraulic machines are arranged between the submerged trolley conveyers, a middle section spray header is arranged between the two hydraulic machines, and the middle section spray header is over against the opening at the top of the trolley conveyers for spraying; the front ends of the two submerged trolley conveyers are respectively provided with a peripheral glue spraying head, and the peripheral glue spraying heads also face the opening at the top of the trolley conveyer for spraying;
the raw material separator is a cyclone separator for separating solid particle raw materials, the outlet end of the raw material separator is respectively provided with a gumming air door, a glue-free feeding air door and an air inlet air door through a four-way pipeline, the glue-free feeding air door is communicated with a glue-free air pipe, a disc through pipe is connected to the air pipe, and the disc through pipe is provided with the air inlet air door; the air inlet of the air inlet air door and the air inlet of the air inlet air door are connected to the outlet of an induced draft fan of the fiber mixing separator through a pipeline;
the device comprises a raw material separator, a glue dipping air door, a glue feeding and spraying head, a glue dipping fiber frame, a glue-free air pipe, a glue mixing separator, a glue dipping air pipe, a glue spraying air pipe and a glue spraying air pipe, wherein the glue spraying air pipe is arranged at the outlet of the glue dipping air door of the raw material separator; the air pipe is provided with a dry fiber winnowing machine;
the additive separator is a cyclone separator, the inlet of the additive separator is connected with an additive synthesizer, the outlet of the additive separator is hermetically connected with the interior of a feeding air pipe of the fiber mixing separator through a discharging conveyor, and the outlet of the fiber mixing separator is connected with a dry fiber finished product collecting pipeline; the tail end of the discharging conveyor is provided with a valve which controls a feeding channel of a feeding air pipe.
Furthermore, the fiber mixing separator is a cyclone separator, an additive drying heat source of the additive synthesizer is derived from tail gas waste heat of the raw material separator, tail gas pipelines of the gum dipping fiber separator and the additive separator are sequentially communicated to a tail gas pipe, and the tail gas pipe is connected with an external tail gas treatment system.
Further, the impregnation fiber frame is of a funnel-shaped structure with an opening at the top;
an inclined net conveyor is further connected to the lower portion of the tail section of the trolley conveyor, and the conveying end of the inclined net conveyor is opposite to the top opening of the gum dipping fiber frame.
Further, a glue extruding conveyor is arranged at the bottom of the impregnated fiber frame, a flow guide extruding mechanism is arranged at the discharge end of the glue extruding conveyor, the flow guide extruding mechanism is a hemispherical adjusting valve capable of adjusting the flow, an extruding cone is arranged at the joint of the glue extruding conveyor and the flow guide extruding mechanism, a glue outlet groove is communicated with the outside in a hollow manner in the extruding cone;
the outlet end of the diversion extrusion mechanism is provided with a degumming conveyor, and the conveying end of the degumming conveyor is communicated in a feeding channel of a gum dipping fiber drying pipe;
a curing agent nozzle is also arranged at the joint of the diversion extrusion mechanism and the degumming conveyor, and the curing agent nozzle is connected with an external curing agent sprayer;
the rubber extruding conveyor and the rubber removing conveyor are both spiral conveyors.
Furthermore, the feeding glue spraying heads are multiple and uniformly arranged in the pipeline at the outlet of the glue dipping valve in a surrounding mode, and the feeding glue spraying heads spray towards the raw materials passing through the glue dipping air door.
Further, the additive synthesizer comprises a glue mixer and a crusher, two inlets of the glue mixer are respectively connected with the raw material of the adhesive and the raw material of the additive particles, the glue mixer is a stirrer, a discharge port of the glue mixer is connected with the crusher, the crusher is communicated with the inside of the feeding drying pipe through a combination of a screw conveyer and a high-speed crushing cutter for an output end, an inlet of the feeding drying pipe is connected with a compressed air pipe or a steam pipe,
the outlet of the feeding drying pipe is communicated with the inside of a drying tail gas pipeline of the raw material separator, and the discharge hole of the drying tail gas pipeline of the raw material separator is connected with the feed inlet of the additive separator;
the feeding and drying pipe is positioned between 10 degrees and 60 degrees above the horizontal plane of the additive separator.
Furthermore, a rectangular net frame is arranged in the trolley, four corners of the top of the trolley are flexible folding net corners capable of being contracted or expanded, rollers are uniformly arranged at the bottom of the trolley and can be clamped on the rail in a rolling mode, and the front and the back of the trolley are connected with each other through chains. .
Furthermore, the hydraulic machine is hung on a press rail through a bearing vehicle, the press rail is fixedly arranged right above the rail in the rubber pool, a telescopic pressure plate of the hydraulic machine is arranged right opposite to an opening right above the passing trolley, and the bearing vehicle and the trolley synchronously move in the same direction.
Furthermore, a gland conveyor is arranged on the liquid level of the glue pool, and the gland conveyor can synchronously rotate to cover the upper opening of the rectangular net frame at the top of the trolley in the glue pool.
Furthermore, the outlet end of the discharging conveyor is arranged in an air pipe at the inlet of the fiber mixing separator in a downward inclined mode, the inclination angle A of the discharging conveyor is within the range of 30-90 degrees, and the discharging conveyor is a spiral conveyor.
The invention has the beneficial effects that: 1. according to the invention, the adhesive is applied to the surface of the particle material of the additive, and the particle material of the additive is subjected to low-temperature flash drying by using the waste heat of the tail gas of the raw material separator, so that the particles can adsorb dry fibers in the tail gas, the weight of part of fibers is increased, the content of the discharged dry fibers discharged into a tail gas pipe finally is reduced, the heat energy and the fiber loss are reduced, and the tail gas of the device is recycled through a pipeline and is used for conveying and drying the fibers;
2. the density of the particle material additive is usually more than 0.5, the invention increases the free falling operation time of the wet particle material additive, changes the phase and increases the heating time of the wet particle material additive in the air, so that the drying effect of the particle material in the device is better, and the particles can also avoid the discharge of the particles and fine fibers due to the effect of the particles on adsorbing dry fibers in tail gas; the content of harmful substances in the discharged tail gas is reduced;
3. the dry fibers are sprayed with the adhesive for multiple times, and are immersed in the adhesive, so that the fibers can fully absorb the adhesive, and all the fibers on the trolley conveyor can be fully soaked in the adhesive dipping operation by matching the trolley and the gland conveyor, so that the dry fibers are fully soaked;
4. various chemical raw material additives are uniformly applied to the fibers step by step through an additive synthesizer and a fiber mixing separator, so that the performance of various materials is improved, for example, the time of a curing agent in glue solution is shortened, and the stability of the glue solution raw material is improved; and the potential difference and the angle of an air inlet pipe of the discharging material conveyer and the fiber mixing separator are controlled, so that the dry fibers and the granular materials after gum dipping and air separation are more easily and uniformly mixed.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall system of the present invention;
FIG. 2 is a schematic view of the structure of the cart of the present invention;
FIG. 3 is a schematic view of the assembly of the present invention carrier vehicle and hydraulic machine;
FIG. 4 is a schematic view of the connection of the glue squeezing device of the glue dipping fiber frame according to the present invention;
FIG. 5 is a schematic view showing the connection of an additive separator and a fiber mixing separator according to the present invention;
FIG. 6 is a schematic diagram of the internal structure of the additive synthesizer according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-trolley conveyer, 10-driving roller, 11-trolley, 111-folding net angle, 112-roller, 113-chain, 12-gland conveyer, 13-glue pool, 14-rail, 15-middle section spray head, 2-raw material separator, 21-glue-free air pipe, 22-glue dipping air door, 23-feeding glue spraying head, 24-glue-free feeding air door, 25-air inlet air door, 26-dry fiber winnowing machine, 27-air inlet air door, 28-peripheral glue spraying head, 3-hydraulic press, 31-pressing plate, 32-bearing vehicle, 33-press rail, 4-additive separator, 41-fiber mixing separator, 42-additive synthesizer, 43-discharging conveyor, 44-glue mixer, 45-crusher, 46-feeding drying tube, 5-gumming fiber frame, 51-inclined net conveyor, 52-gum extruding conveyor, 53-diversion extruding mechanism, 54-degumming conveyor, 55-extruding cone, 56-gum discharging tank, 57-curing agent nozzle, 6-gumming fiber separator, 61-gumming fiber drying tube, 62-air tube and 7-tail air tube.
Detailed Description
Referring to fig. 1 to 6, the present invention provides a technical solution: a fiber dip size and additive synthesis drying system comprising:
the trolley conveyor 1 is a closed complete mesh belt conveyor consisting of a plurality of trolleys 11 connected end to end, the trolleys are stably clamped on a track 14 without separation, all the trolleys 11 forming the trolley conveyor 1 are synchronously moved and arranged on the track 14, and the top of each trolley 11 forming the trolley conveyor 1 is provided with an opening; the four corners of the top of the rectangular net frame of the trolley 11 are flexible folding net corners capable of being contracted or expanded, the aperture of the net holes of the trolley 11 is not more than six times of the diameter of the cross section of the fiber, and the aperture of the rectangular net frame of the trolley 11 is less than one fifth of the length of the fiber.
A plurality of driving rollers 10 are uniformly distributed on the track 14, and the trolley conveyor 1 is driven by the driving rollers 10;
the glue pool 13 is a pool filled with an adhesive and provided with an opening at the top, the trolleys of at least two trolley conveyors 1 are completely submerged below the liquid level of the adhesive in the glue pool 13, two hydraulic machines 3 are arranged between the submerged trolley conveyors 1, a middle section spray header 15 is arranged between the two hydraulic machines 3, and the middle section spray header 15 is over against the opening at the top of the trolley conveyor 1 for spraying; the front ends of the two submerged trolley conveyers 1 are respectively provided with a peripheral glue spraying head 28, and the peripheral glue spraying heads 28 are also opposite to the top openings of the trolley conveyers 1 for spraying;
the raw material separator 2 is a cyclone separator for separating solid particle raw materials, the outlet end of the raw material separator is respectively provided with a gumming air door 22, a glue-free feeding air door 24 and an air inlet air door 25 through a four-way pipeline, the glue-free feeding air door 24 is communicated with the glue-free feeding air door, a coiled pipe is connected to the air pipe 21, and an air inlet air door 27 is arranged on the coiled pipe; the inlets of the air inlet damper 25 and the air inlet damper 27 are respectively connected to the outlets of the induced draft fans of the fiber mixture separator 41 through pipes.
The starting section of the trolley conveyer 1 is connected to an outlet of a glue dipping air door 22 of the raw material separator 2, a feeding glue spraying head 23 is further arranged between an outlet end of the glue dipping air door 22 and the trolley conveyer 1, a glue dipping fiber frame 5 for receiving raw materials is arranged below a conveying tail section of the trolley conveyer 1, the glue dipping fiber frame 5 is further communicated with an inlet of a glue dipping fiber separator 6 through a glue dipping fiber drying pipe 61, an outlet of a glue-free air pipe 21 is communicated with a discharge port of the glue dipping fiber separator 6 in a confluence manner, and the glue dipping fiber separator 6 and a discharge port of the glue-free air pipe 21 are connected to an inlet of a fiber mixing separator 41 in a confluence manner; a dry fiber winnowing machine 26 is arranged on the air pipe 62;
the additive separator 4 is a cyclone separator, the inlet of the additive separator is connected with an additive synthesizer 42, the outlet of the additive separator is hermetically connected with a feeding air pipe 62 of the fiber mixing separator 41 through a discharging conveyor 43, and the tail end of the discharging conveyor 43 is provided with a valve 431 for controlling the feeding of various additives to the feeding air pipe 62. The outlet of the fiber mixing separator 41 is connected with a dry fiber finished product collecting pipeline, the system continuously and automatically produces the fiber board with ultrahigh density and excellent mechanical property by utilizing the existing artificial board equipment and process technology, can better promote the adhesive to uniformly enter the fiber surface and each microstructure, and simultaneously also improves the comprehensive utilization rate of the wood material.
The fiber mixing separator 41 is a cyclone separator, and the additive drying heat source of the additive synthesizer 42 is the waste heat of the tail gas of the raw material separator 2. Tail gas pipelines of the gum dipping fiber separator 6 and the additive separator 4 are sequentially communicated to a tail gas pipe 7, and the tail gas pipe 7 is connected with an external tail gas treatment system, so that the condition that the fibers scatter and pollute the surrounding environment is avoided;
the gum dipping fiber frame 5 is a funnel-shaped structure with an opening at the top;
an inclined net conveyor 51 is further connected to the lower portion of the tail end of the trolley conveyor 1, the conveying end of the inclined net conveyor 51 is opposite to an opening in the top of the impregnated fiber frame 5, impregnated fibers in the trolley 11 can be conveniently turned over and enter the impregnated fiber frame 5, and scattered impregnated fibers are conveyed back to the impregnated fiber frame 5 through the inclined net conveyor 51, so that the impregnated fibers are prevented from scattering when the trolley 11 is turned over;
a glue extruding conveyor 52 is arranged at the bottom of the glue dipping fiber frame 5, a flow guide extruding mechanism 53 is arranged at the discharge end of the glue extruding conveyor 52, the flow guide extruding mechanism 53 is a hemispherical adjusting valve capable of adjusting the flow, an extruding cone 55 is arranged at the connection part of the glue extruding conveyor 52 and the flow guide extruding mechanism 53, a glue outlet groove 56 is communicated with the outside in a hollow manner in the extruding cone 55;
the outflow end of the diversion extrusion mechanism 53 is provided with a degumming conveyor 54, and the conveying end of the degumming conveyor 54 is communicated in the feeding channel of the impregnated fiber drying pipe 61;
a curing agent nozzle 57 is further arranged at the joint of the diversion extrusion mechanism 53 and the degumming conveyor 54, and the curing agent nozzle 57 is connected with an external curing agent sprayer;
the glue squeezing conveyor 52 and the glue removing conveyor 54 are both spiral conveyors, so that redundant glue on the surface of the fiber after glue dipping can be removed, the fiber only needs to be subjected to internal glue dipping, the internal glue dipping is better and better, and only one layer of glue is required to be attached to the surface of the fiber;
the feeding glue-spraying heads 23 and the peripheral glue-spraying heads 28 are multiple, the multiple feeding glue-spraying heads 23 are uniformly arranged in a pipeline at the outlet of the glue-dipping air door 22 in an enclosing manner, the feeding glue-spraying heads 23 are sprayed towards the raw material passing through the glue-dipping air door 22, so that dry fibers entering the trolley 11 can be sprayed with the adhesive in advance, the fibers are prevented from being blown away by wind and falling off, a layer of adhesive is already attached to the surface of the fibers when the fibers enter the trolley 11, the fibers can be adhered to the inner wall of the trolley 11 after being discharged, and the trolley 11 can be conveniently carried to carry out glue-dipping operation; the peripheral glue spraying head 28 is arranged at the position where glue spraying is needed.
The additive synthesizer 42 comprises a glue mixer 44 and a crusher 45, two inlets of the glue mixer 44 are respectively connected with an adhesive raw material and an additive particle raw material, the glue mixer 44 is a stirrer, a discharge port of the glue mixer 44 is connected with the crusher 45, the crusher 45 is an output end and is communicated with the inside of a feeding drying pipe 46 through a screw conveyor and a high-speed crushing cutter combination, an inlet of the feeding drying pipe 46 is connected with a compressed air pipe or a steam pipe, an outlet of the feeding drying pipe 46 is communicated with a drying tail gas pipeline of the raw material separator 2 in the inside, a discharge port of the drying tail gas pipeline of the raw material separator 2 is connected with a feed port of the additive separator 4, so that the solid additive particle raw material and the adhesive can be rapidly and uniformly mixed, and then the mixed additive can be dried and then sent into the additive separator 4 for the next-step process to screen additive particles, then carrying out the steps;
the feeding and drying pipe 46 is positioned between 10 degrees and 60 degrees above the horizontal plane of the additive separator 4, the angle is proper, the feeding is convenient, the density of the granular material additive is often more than 0.5, the scheme increases the free-falling operation time of the wet granular material additive, and the phase change increases the heating time of the wet granular material additive in the air;
the interior of the trolley 11 is a rectangular net frame, four corners of the top of the trolley 11 are flexible folding net corners 111 capable of being contracted or expanded, rollers 112 are uniformly arranged at the bottom of the trolley 11, the rollers 112 can be clamped on the rails 14 in a rolling manner, the front and the back of the trolley 11 are connected with each other through chains 113, so that all surfaces of the trolley can be soaked with adhesives, and outflow of the adhesives is not influenced, therefore, the device can carry out gum dipping, gum spraying and gum dipping operations on fibers, can drain the fibers in a normal moving process, cannot flow out the fibers, and is convenient for repeated gum dipping operations carried by the trolley 11 on the fibers;
the hydraulic machine 3 is hung on a press track 33 through a bearing vehicle 32, the press track 33 is fixedly arranged right above a track 14 in a glue pool 13, a telescopic pressure plate 31 of the hydraulic machine 3 is arranged right above an opening of a passing trolley 11, the bearing vehicle 32 and the trolley 11 synchronously move in the same direction, the hydraulic machine 3 is a common device, the hydraulic machine 3 is hung on the bearing vehicle 32, so that the pressure plate 31 of the hydraulic machine 3 can press one trolley 11 and move along with the trolley 11, the extrusion can be carried out while the trolley moves, the effective extrusion time can be longer, the normal operation of the trolley 11 is not influenced, the arrangement does not delay the extrusion time of the hydraulic machine 3 on fibers in the trolley 11, the normal moving speed of the trolley 11 is not influenced, the whole production line does not need to stop for waiting for the extrusion of the hydraulic machine 3, and the device enables the whole production line to operate more smoothly, and the speed of transportation production is faster;
the liquid level of the glue pool 13 is also provided with a gland conveyer 12, the gland conveyer 12 can synchronously rotate to cover and press the upper opening of a rectangular net frame at the top of the trolley 11 in the glue pool 13, the top of the trolley 11 is covered by the gland conveyer 12, the fibers in the trolley 11 are prevented from floating and scattering when entering the glue pool 13, the gland conveyer 12 is equivalent to the cover of the trolley conveyer 1 and can also have the same running speed as the trolley 11 and can continuously cover the top opening of the trolley 11 entering the glue pool 13, the fibers are effectively prevented from floating, the fibers in the trolley 11 can be completely entered into the glue pool 13, and meanwhile, the gland conveyer 12 is also in mesh transmission and does not prevent the permeation and outflow of the adhesive in the glue pool 13;
the outlet end of the discharging conveyor 43 is arranged in an air inlet pipe 62 of the fiber mixing separator 41 in a downward inclined manner, the inclined angle A of the discharging conveyor 43 is within the range of 30-90 degrees, and the discharging conveyor 43 is a screw conveyor; due to the inclined arrangement, the discharging conveyor 43 can conveniently convey materials, and the feeding of various additives to the feeding air pipe 62 is controlled.
In one embodiment of the invention:
the embodiment of the invention provides a drying system for synthesizing fiber gum dipping and sizing agent and additive, and the technical problem solved by the invention is as follows: 1. when the existing high-density fiberboard is processed, the permeability of an adhesive is not high, so that the fiberboard is fluffy, particularly, the water absorption thickness expansion rate is high, so that the board is easy to absorb water, and the board expands after absorbing water, so that the board is prepared, and when the manufactured product is used, the problems of expansion, foaming and the like of the board are easy to occur; 2. when the existing fiber board is manufactured, the physical performance of the medium-density fiber board is not high, the strength is not high enough and the fiber board is easy to bend because the fiber contains more air; 3. the existing fiber raw materials are easy to be mixed unevenly when additive particles are adhered, and the particles cannot be adhered to the surfaces of the fibers and can only be clamped between the fibers and are easy to be separated, so that the additive particle materials are unevenly dispersed.
The realized technical effects are as follows: 1. according to the invention, the adhesive is applied to the surface of the particle material of the additive, and the additive is subjected to low-temperature flash drying in the tail gas of the raw material separator 2, so that the particles adsorb dry fibers in the tail gas, the weight of part of fibers is increased, the content of the discharged dry fibers discharged into the tail gas pipe 7 finally is reduced, the heat energy and fiber loss are reduced, and the pollutant discharge can be reduced;
2. the density of the granular material additive is usually more than 0.5, the device increases the free falling operation time of the wet granular material additive, and the phase change increases the heating time of the wet granular material additive in the air, so that the drying effect of the granular material in the device is better, and the discharge of granules and fine fibers can be avoided;
3. the dry fibers are fed with the glue spraying head 23, the peripheral glue spraying head 28 and the middle-section glue spraying head 15 to fully spray the glue for multiple times, and are immersed into the glue pool 13 of the glue, so that the fibers can fully absorb the glue, and all the fibers in the trolley conveyor 1 can be fully soaked in glue dipping operation through the matching of the trolley 11 and the gland conveyor 12, so that the dry fibers are fully soaked, and when the fibers are repeatedly extruded by the hydraulic machine 3 to rebound after being exhausted, the glue is fully absorbed, the air content in the fibers is reduced, the proportion of the glue is higher, and the physical strength of the fiber board is increased;
4. the additive synthesizer 42 and the fiber mixing separator 41 are used for uniformly and stepwise implementing various chemical raw material additives on the fibers, so that the performance of various materials is improved, for example, the time of a curing agent in glue solution is shortened, and the stability of the glue solution raw material is improved; and the dry fibers and the granular materials after gum dipping and air separation are more easily and uniformly mixed by controlling the potential difference and the angle of an air inlet pipe of the discharging material conveyer and the fiber mixing separator.
In order to solve the above problems, the technical solution in the embodiments of the present invention has the following general idea:
for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
When the invention is installed and used, a plurality of trolleys 11 are mutually hooked, the front side and the rear side of each trolley 11 are provided with chains 113, the chains 113 on the front side and the rear side of each trolley 11 are connected end to form the complete trolley conveyer 1, which is similar to a mesh belt conveyer, only each mesh belt is replaced by the trolleys 11 connected end to end, each trolley 11 is of a structure with an opening at the top and is required to contain fibers, the front corner and the rear corner of the top of each trolley 11 are folding mesh corners 111 which are flexible meshes and used for enabling the folding mesh corners 111 to be unfolded and contracted when the trolley 11 enters a rubber pool 13 in a downhill slope or leaves the rubber pool 13 in a climbing way, so that the trolleys 11 can be closely and stably connected end to end when ascending and descending, the rollers 112 of the trolleys 11 can rotate but can not be clamped in the track 14, the shafts of the rollers 112 can be clamped on the track 14 and then are driven by the chains, at present, the conveyor which limits the trolley 11 to move on the track 14 belongs to the mature technology, and the trolley 11 can not be separated from the track 14 even if the trolley 11 is hung upside down;
the upper position of the trolley conveyor 1 is a fiber receiving conveying section, as shown in fig. 1, after the conveying and feeding of the trolley conveyor 1 below is finished, the trolley conveyor 1 returns to a recovery trolley 11 section of an initial section, the opening of the trolley 11 of the conveying section is upward, the trolleys of the recovery section, namely the trolleys 11 below the trolley conveyor 1 are hung upside down on a track 14 to move, the trolley conveyor 1 is driven by a driving roller 10, so that a gear chain driving all the trolleys 11 can drive the trolley conveyor 1 to move under power, the initial section of the trolley conveyor 1 is the leftmost end of the upper half part in fig. 1, namely, the position right under a glue dipping air door 22 right below a raw material separator 2, two sections of a plurality of trolleys 11 of the trolley conveyor 1 need to be completely immersed in a glue bath 13, and one section between two sections of the trolley conveyors 1 at the glue dipping position is lifted above the glue bath 13, at least two hydraulic machines 3 are arranged above a track 14 of the trolley conveyor 1, the hydraulic machines 3 are suspended right above the trolley 11 through a bearing vehicle 32, a pressure plate 31 of each hydraulic machine 3 is pressed against the top opening of the trolley 11 and lifted and retracted, the bearing vehicle 32 is suspended on a press track 33, the moving speeds of the press machines 3 and the trolley 11 are the same, when the trolley 11 moves on the track 14, the pressure plate 31 of each hydraulic machine 3 can move forward along with the speed of the trolley 11 to press the impregnated fibers in the trolley 11, so that the gas in the fibers is extruded by the adhesive and discharged out of fiber gaps, a middle section spray header 15 is additionally arranged between the two hydraulic machines 3 and used for spraying the adhesive on the fibers in the trolley 11 again after extruding the air and the adhesive, and all the adhesive is absorbed when the fibers are rebounded and expanded after extruding, the air in the fiber is the most main factor with low physical mechanical property, the hydraulic machines 3 of the device are two, namely the fiber in the trolley 11 is extruded twice, and the adhesive solution is uniformly sprayed between the two extrusion operations, so that the fiber can breathe twice above the rubber pool 13, each time the hydraulic machine 3 extrudes the impregnated fiber to exhaust the air in the fiber to the greatest extent, the fiber is extruded twice, the fiber is sucked to contain the adhesive when the fiber breathes and expands twice, after the second extrusion, the peripheral glue spraying head 28 sprays the adhesive to the fiber, and simultaneously the fiber which is not rebounded in the extrusion state is directly sent into the rubber pool 13 along with the trolley 11 to be impregnated completely in an immersion manner, the adhesive is ensured to penetrate into the fiber more deeply;
the tail trolley 11 of the trolley conveyor 1 continuously moves forwards, the opening of the tail trolley 11 is turned downwards, the dipped fibers are turned over and fall into the dipped fiber frame 5, some of the dipped fibers fall onto the inclined net conveyor 51, the inclined net conveyor 51 is a conveyor belt conveyor, the scattered dipped fibers are conveniently conveyed into the dipped fiber frame 5 again, the dipping is ensured not to be omitted and not to be scattered, and the fibers dipped with the adhesive are dipped with the dipped fibers;
the bottom and the side wall of the trolley 1 are both of firm mesh structures, so that an adhesive can freely enter and exit the inside of the trolley 11, the infiltration and the permeation of fibers are facilitated, the redundant adhesive can be smoothly discharged, the aperture of the mesh of the trolley 11 is not more than six times of the diameter of the cross section of the fibers, the aperture of the rectangular mesh frame of the trolley 11 is less than one fifth of the length of the fibers, the fibers are prevented from scattering and separating to the outside of the trolley 11, and meanwhile, the adhesive in the trolley 11 can be quickly drained;
the raw material separator 2 is a cyclone separator which separates fine fibers from air, so that the fiber raw materials are tighter, the fibers can be prevented from being fluffed by the air, and then dry hot air can be discharged to enter a subsequent process;
the above is a structure of a gumming device for fibers, the fibers need to be added with additives, such as a curing agent, a waterproofing agent, mildew-proof particles, flame-retardant particles and paraffin particles, for increasing various performances of a finally manufactured plate, some additives are liquid particles, the liquid additives need to be stirred and mixed uniformly, the solid particles need to be mixed uniformly, because the operation of stirring and mixing the gummed fibers and the solid particles uniformly is very difficult, basically, the fibers cannot be completely mixed uniformly and adhered tightly, and are easy to loosen, so that the additives are at the bottom of a stirrer, and the fibers are at the top of the stirrer, so that the fibers are completely separated and layered;
the additive of the system is divided into two steps, liquid curing agent and waterproof agent are mixed at the bottom of a glue dipping fiber frame 5 which is just finished by glue dipping, glue dipping fibers pass through a glue extruding conveyor 52 at the bottom of the glue dipping fiber frame 5 and can extrude redundant adhesive on the surfaces of the fibers, then the glue feeding fibers are continuously extruded to a flow guiding extrusion mechanism 53 through a spiral conveyor of the glue extruding conveyor 52, the flow guiding extrusion mechanism 53 can control the flow of the glue dipping fibers in a telescopic mode, as shown in figure 4, the flow guiding extrusion mechanism 53 moves leftwards, the flow is increased, the flow is reduced rightwards, the glue dipping fibers move leftwards and can be extruded by an extrusion cone 55, the extrusion cone is a cone with a small outlet end and a large feed inlet, the glue dipping fibers can be conveniently extruded, the redundant adhesive attached to the surfaces of the fibers can be extruded and flows away through a glue outlet groove 56 for collection, then pouring the fibers into a glue tank 13 to avoid waste, arranging a filter screen between an extrusion cone 55 and a glue outlet groove 56, so that the fibers cannot flow out, and after the dipped fibers pass through the extrusion cone 55, the fibers are left in a glue extrusion conveyor 52 to enter a flow guide extrusion mechanism 53 to limit the flow of the dipped fibers, so that the flow rate of the fibers is reduced, the glue extrusion is cleaner, the situation that the adhesives are attached to the outside of the dipped fibers is avoided, but the adhesives immersed in the fibers are not extruded by a press machine and cannot flow out is avoided, therefore, the dipped fibers are filled with the adhesives and only have less adhesives on the surfaces, at the moment, the curing agent and the waterproofing agent are sprayed through a curing agent nozzle 57, so that the curing agent and the waterproofing agent are uniformly attached to the surfaces of the dipped fibers, and then the dipped fibers which are degummed and have a thin layer of the curing agent and the waterproofing agent attached to the surfaces slowly enter the dry hot-air dipped fibers through a degumming conveyor 54 The drying tube 61 is used for rapidly drying the dipped fibers, the adhesive, the curing agent and the waterproof agent are solidified and dried up and are integrated with the fibers, then the dipped fibers enter the dipped fiber separator 6 through the dipped fiber drying tube 61, the dipped dry fibers are separated out and enter the next process, and the generated tail gas is intensively treated through the tail gas tube 7;
the dipped fibers sprayed with the curing agent and the waterproofing agent are separated by the dipped fiber separator 6 and enter the next process, and the next process needs to be uniformly mixed with mildew-proof particles, flame-retardant particles and the like for increasing the chemical properties of the formed fiberboard, and the particles are difficult to mix with the fibers, so that the particles need to be treated in advance.
The treatments of the mildew-resistant particles, flame-retardant particles, etc. are as follows: firstly, feeding additive particle raw materials to be mixed into a glue mixer 44, filling an adhesive into a stirrer 44, uniformly stirring and mixing the adhesive and the particle raw materials of various additives, attaching a layer of adhesive to the surface of the particle raw materials, then stirring and crushing the uniformly stirred particle raw materials again by a crusher 45, adding a combination of a screw conveyor and a high-speed crushing cutter at the bottom of the crusher, mixing the uniformly stirred and more finely crushed particle raw materials with the adhesive, feeding the adhesive into a drying pipeline 46 of compressed air or steam, feeding the additive particle raw materials into a tail gas pipeline of a raw material separator 2, drying and conveying the additive by tail gas waste heat, conveying the particle raw materials to an additive separator 4 by a feeding drying pipe 46 and the tail gas pipeline of the raw material separator 2, wherein the additive separator 4 is also a cyclone separator, and separating the additives, then, the qualified dried additive particle raw materials are conveyed by a discharge conveyor 43 and conveyed into an air inlet pipe 62 of a fiber mixing separator 41, namely a glue dipping fiber separator 6 and a discharge port confluence air pipe 62 of an air pipe 21, then the solid additive particle raw materials and glue dipping fibers attached with a curing agent and a waterproof agent are uniformly mixed by the fiber mixing separator 41 and then can enter a subsequent production process, so that the device can well perform the conventional processes of subsequent compression molding, forming, curing and the like, the additive particle raw materials are dipped and are more easily attached to the fibers without layering and overlapping, and the additive is more uniformly mixed; because the surface of the raw material of the additive particles is already attached with the adhesive, the physical and mechanical properties of the terminal plate can not be influenced.
The device has the measures of spraying the adhesive without the dry fibers, dipping, draining, squeezing, spraying the adhesive, squeezing again, spraying the adhesive, dipping again, draining, degumming, adding the curing agent, the waterproof agent, drying the dipped fibers and applying the granular material, so that the dry fibers can be fully dipped when the dry fibers are repeatedly expanded and breathed, air is discharged by breathing the fibers to permeate the adhesive, the proportion of the adhesive is improved, the air is discharged more thoroughly, the formed high-density fiberboard is more compact, the physical and mechanical strength is higher, and the mixing of various additives and fiber raw materials is more uniform;
meanwhile, various chemical raw material additives are applied to the fibers step by step, so that the performance of various materials is improved, for example, the time of a curing agent and a waterproofing agent in glue solution is shortened, and the stability of the glue solution raw material is improved.
In addition, in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A drying system for fiber gum dipping sizing and additive synthesis, comprising:
the trolley conveyor (1) is a closed complete mesh belt conveyor formed by a plurality of trolleys (11) connected end to end, the trolleys are stably clamped on a track (14) and cannot be separated, all the trolleys (11) forming the trolley conveyor (1) are synchronously moved and mounted on the track (14), and the top of each trolley (11) forming the trolley conveyor (1) is provided with an opening; the four corners of the top of the net frame of the trolley (11) are flexible folding net corners capable of being contracted or expanded;
a plurality of driving rollers (10) are uniformly distributed on the track (14), and the trolley conveyor (1) is driven by the driving rollers (10);
the glue pool (13) is a pool filled with an adhesive and provided with an opening at the top, trolleys of at least two trolley conveyors (1) are completely submerged below the liquid level of the adhesive in the glue pool (13), two hydraulic machines (3) are arranged between the submerged trolley conveyors (1), a middle-section spray header (15) is arranged between the two hydraulic machines (3), and the middle-section spray header (15) is over against the opening at the top of the trolley conveyor (1) for spraying; the front ends of the two submerged trolley conveyers (1) are respectively provided with a peripheral glue spraying head (28), and the peripheral glue spraying heads (28) are also opposite to the top openings of the trolley conveyers (1) for spraying;
the raw material separator (2) is a cyclone separator for separating solid particle raw materials, the outlet end of the raw material separator is respectively provided with a gum dipping air door (22), a gum-free feeding air door (24) and an air inlet air door (25) through a four-way pipeline, the gum-free feeding air door (24) is communicated with a gum-free air pipe (21), the air pipe (21) is connected with a coiled pipe, and the coiled pipe is provided with an air inlet air door (27); the air inlets of the air inlet damper (25) and the air inlet damper (27) are connected to the outlet of an induced draft fan of the fiber mixing separator (41) through a pipeline;
the starting section of the trolley conveyor (1) is connected to the outlet of a glue dipping air door (22) of the raw material separator (2), a feeding glue spraying head (23) is further arranged between the outlet end of the glue dipping air door (22) and the trolley conveyor (1), a glue dipping fiber frame (5) for connecting raw materials is arranged below the conveying tail section of the trolley conveyor (1), the glue dipping fiber frame (5) is further communicated with the inlet of the glue dipping fiber separator (6) through a glue dipping fiber drying pipe (61), the outlet of the glue-free air pipe (21) is communicated with the discharge port of the glue dipping fiber separator (6) in a confluence mode, and the glue dipping fiber separator (6) and the discharge port of the glue-free air pipe (21) are connected to the inlet of the glue mixing fiber separator (41) in a confluence mode; a dry fiber winnowing machine (26) is arranged on the air pipe (62);
the additive separator (4) is a cyclone separator, the inlet of the additive separator is connected with an additive synthesizer (42), the outlet of the additive separator is hermetically connected with the interior of a feeding air pipe (62) of the fiber mixing separator (41) through a discharging conveyor (43), and the outlet of the fiber mixing separator (41) is connected with a dry fiber finished product collecting pipeline; a valve (431) is arranged at the tail end of the discharging conveyor (43), and the valve (431) controls a feeding channel of a feeding air pipe (62).
2. The system of claim 1, wherein the drying system comprises: the fiber mixing separator (41) is a cyclone separator, an additive drying heat source of the additive synthesizer (42) is derived from tail gas waste heat of the raw material separator (2), tail gas pipelines of the gum dipping fiber separator (6) and the additive separator (4) are communicated to a tail gas pipe (7) in sequence, and the tail gas pipe (7) is connected with an external tail gas treatment system.
3. The system of claim 1, wherein the drying system comprises: the gum dipping fiber frame (5) is of a funnel-shaped structure with an opening at the top;
an inclined net conveyor (51) is further connected to the lower portion of the tail section of the trolley conveyor (1), and the conveying end of the inclined net conveyor (51) is opposite to the top opening of the gum dipping fiber frame (5).
4. A fiber dip size and additive composite drying system as claimed in claim 3, wherein: a glue extruding conveyor (52) is arranged at the bottom of the glue dipping fiber frame (5), a flow guide extruding mechanism (53) is arranged at the discharge end of the glue extruding conveyor (52), the flow guide extruding mechanism (53) is a hemispherical adjusting valve capable of adjusting the flow, an extruding cone (55) is arranged at the joint of the glue extruding conveyor (52) and the flow guide extruding mechanism (53), a glue outlet groove (56) is communicated with the outside in a hollow manner in the extruding cone (55);
the outflow end of the diversion extrusion mechanism (53) is provided with a degumming conveyor (54), and the conveying end of the degumming conveyor (54) is communicated in a feeding channel of the impregnated fiber drying pipe (61);
a curing agent nozzle (57) is further arranged at the joint of the diversion extrusion mechanism (53) and the degumming conveyor (54), and the curing agent nozzle (57) is connected with an external curing agent sprayer;
the glue extruding conveyor (52) and the glue removing conveyor (54) are spiral conveyors.
5. The system of claim 1, wherein the drying system comprises: the feeding glue spraying heads (23) are multiple, the feeding glue spraying heads (23) are uniformly arranged in a pipeline at an outlet of the glue dipping air door (22) in an enclosing mode, and the feeding glue spraying heads (23) spray raw materials passing through the glue dipping air door (22).
6. The system of claim 1, wherein the drying system comprises: the additive synthesizer (42) comprises a glue mixer (44) and a crusher (45), two inlets of the glue mixer (44) are respectively connected with a glue raw material and an additive particle raw material, the glue mixer (44) is a stirrer, the discharge hole of the glue mixer (44) is connected with the crusher (45), the crusher (45) is communicated with the inside of a feeding drying pipe (46) for an output end through a spiral conveyer and a high-speed crushing cutter combination, the inlet of the feeding drying pipe (46) is connected with a compressed air pipe or a steam pipe,
an outlet of the feeding drying pipe (46) is communicated with a drying tail gas pipeline of the raw material separator (2) internally, and a discharge hole of the drying tail gas pipeline of the raw material separator (2) is connected with a feed hole of the additive separator (4);
the feeding and drying pipe (46) is positioned between 10 degrees and 60 degrees above the horizontal plane of the additive separator (4).
7. The system of claim 1, wherein the drying system comprises: the inside rectangle screen frame that is of dolly (11), the flexible folding net angle (111) of top four corners for can contracting or expanding of dolly (11), even gyro wheel (112) that are equipped with in dolly (11) bottom, gyro wheel (112) can rolling card establish on track (14), pass through chain (113) interconnect around dolly (11), the aperture of dolly (11) mesh is no longer than the six times of fibre cross section diameter, just the aperture of dolly (11) rectangle screen frame is less than one fifth of fibre length.
8. The system of claim 7, wherein the drying system comprises: the hydraulic machine (3) is hung on a press rail (33) through a bearing vehicle (32), the press rail (33) is fixedly arranged right above a rail (14) in the glue pool (13), a telescopic pressing plate (31) of the hydraulic machine (3) is arranged right above an opening of the passing trolley (11), and the bearing vehicle (32) and the trolley (11) synchronously move in the same direction.
9. The system of claim 7, wherein the drying system comprises: the glue pool (13) is also provided with a gland conveyor (12) on the liquid surface, and the gland conveyor (12) can synchronously rotate to cover the upper opening of the rectangular net frame at the top of the trolley (11) in the glue pool (13).
10. The system of claim 1, wherein the drying system comprises: the outlet end of the discharging conveyor (43) is arranged in an air inlet pipe 62 of the fiber mixing separator (41) in a downward inclined mode, the inclined angle A of the discharging conveyor (43) ranges from 30 degrees to 90 degrees, and the discharging conveyor (43) is a screw conveyor.
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