CN203620948U

CN203620948U - Wood chip treatment device

Info

Publication number: CN203620948U
Application number: CN201320703909.4U
Authority: CN
Inventors: 王永闽; 廖秋水; 吴祖顺; 刘翔晖; 董永平; 魏叶满
Original assignee: FUJIAN YONGAN FORESTRY (GROUP) CO LTD
Current assignee: FUJIAN YONGAN FORESTRY (GROUP) CO LTD
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2014-06-04
Anticipated expiration: 2023-11-08

Abstract

The utility model provides a wood chip treatment device. The device comprises a wind cleaning unit, a preheater, a drying cyclone separator and a secondary cyclone separator, wherein the wind cleaning unit comprises a gas delivery pipe and a wind cleaning case as well as a first impurity passage, a wood chip blanking passage, a second impurity passage, a tail gas bin, a conveying belt and a wood chip discharging port which are located inside the wind cleaning case, the wood chip discharging port is located at the bottom of the left side inside the tail gas bin, the head end of the conveying belt is located right under or on the lower right side of an outlet of the wood chip blanking passage, a humidifier is arranged above the rear section of the conveying belt, and the wood chip discharging port is located right under the tail end of the conveying belt and connected with the preheater. The device has the advantages as follows: resources can be recycled, various impurities on wood chips can be cleaned effectively, the moisture content of the wood chips can be adjusted, and crack or rift phenomena of the wood chips during preheating can also be avoided, so that the quality of medium density fiberboards can be improved.

Description

A kind of Chip treatment device

[technical field]

The utility model relates to the apparatus of medium density fibre board (MDF) manufacture field, relates in particular to a kind of Chip treatment device for medium density fibre board (MDF) process.

[background technology]

Medium density fibre board (MDF) industry is comprehensive utilization of resources industry, is again Resource Dependence type industry, or the relatively high industry of energy resource consumption.Medium density fibre board (MDF) density is 650-800 kilogram/cubic metre, high-density plate density >=880 kilogram/cubic metre, it is mainly used in building interior finishing, floor base material, Furniture manufacture, car and boat finishing, Household electric appliance casing manufacture and carves various technique reliefs etc.

And medium density fibre board (MDF) is take artificial fast-growing small dimension wood, brush wood, logging residue and industrial wood waste as primary raw material, the sheet material that adopts dry wet process technique to produce, this production technology comprises following workshop section: preparation workshop section, fiber are prepared workshop section, matforming and hot pressing section and finished product processing workshop section; Wherein, preparation workshop section comprises the operation compositions such as raw material is stored up, chipped, screening, Chip treatment; Fiber is prepared workshop section and is comprised defibrator process, impregnation, applying glue, the operation such as dry.

At present, Chip treatment operation comprises conventionally cleans and warm-up operation, cleaning is divided into washing mostly and wind is washed two kinds, in the time that cleaning selects wind to wash, existing Chip treatment device used generally comprises transfer plate, a dust absorption fan and a preheater, on transfer plate, be placed with a plurality of through holes that shift to install, this dust absorption fan is installed on the below of transfer plate, treating that wood chip that wind is washed falls into transmits on transfer plate and finally enters preheater preheating, and in the process of wood chip transmission, dust absorption fan siphons away the dust on wood chip via the through hole on transfer plate.Such Chip treatment device can only be disposed some trickle dust, fail wood chip comparatively effectively to clean, and wood chip just directly enters preheater preheating after removing dust, now, if wood chip is comparatively dried, enter the preheater preheating of heating suddenly and probably cause wood chip to occur crackle or slight crack, thereby finally affect the quality of medium density fibre board (MDF).

The fiber of medium-density fiberboard production line is prepared the dry one-level that conventionally adopts of workshop section and is dodged anxious formula drying machine, comprises dry axial flow blower, drying machine pipeline, expansion joint, safety anti-explosive dish, discharging revolving valve, a 1-2 dry cyclone separator means.Dodging anxious formula drying machine major function is exactly the dry fiber that wet wood-fibred (85%-90% moisture content) flash baking of executing glue is only had to 8 &-15% to moisture content, is beneficial to the follow-up matforming and hot pressing section of mating formation and uses; Wherein the dry axial flow blower main engine power of drying equipment is 200kw-2000kw, and dry cyclone separator tail gas outlet temperature is 50 ℃-85 ℃, the granular material discharged concentration 50mg-175mg/m of tail gas ³, formaldehyde emissions concentration 5mg-15mg/m ³, Yan channel black Du≤1, Shuai≤0.1kg/m of Han Shui ³, and air quantity is larger, reaches 100,000-700,000 Nm ³/ h, the about 3500-5000Pa of pressure, wind speed is at 8 meter per second-25 meter per seconds; And the tail gas that present stage produces at the dry cyclone separator of fiberboard industry is all directly to fall to airborne release, is not used, thereby causes the especially waste of heat energy and wind energy of resource.

[utility model content]

Technical problem to be solved in the utility model is to provide a kind of Chip treatment device, not only realize the recycling of resource, the various impurity on wood chip effectively removed, regulated the moisture content of wood chip, but also can avoid wood chip to hanker in advance occurring the phenomenon of crackle or slight crack.

The utility model solves the problems of the technologies described above by the following technical programs: a kind of Chip treatment device, comprises that a wind is washed unit, a preheater, is dried cyclone separator and secondary cyclone, described wind is washed unit and is comprised an appendix, one wind is washed cabinet, and be all positioned at wind and wash one first impurity path of cabinet, one wood chip blanking path, one second impurity path and a tail gas storehouse, described wind is washed a left side for cabinet, on right top, be respectively equipped with an air outlet and a charging aperture, and the right side that this wind is washed cabinet be provided with one with this charging aperture next-door neighbour's air inlet, described appendix is provided with an air blast, one end of described appendix is connected with the fume emission mouth of dry cyclone separator, and the other end of this appendix is communicated with air inlet, the import in described the first impurity path, the import in wood chip blanking path, the import in the import in the second impurity path and tail gas storehouse is adjacent setting and be all positioned at air inlet lower left successively from right to left, the import in described the first impurity path be positioned at charging aperture under, described air outlet is connected with the air inlet of secondary cyclone, described wind is washed the wood chip discharging opening that is also provided with a conveyer belt and in cabinet and is positioned at tail gas storehouse left bottom, the head end of described conveyer belt is positioned under the outlet in this wood chip blanking path or lower right, one electric magnetic iron remover and a humidifier of adjacent setting are installed in described tail gas storehouse, and described electric magnetic iron remover and humidifier 182 are all positioned at the back segment top of conveyer belt, described wood chip discharging opening is positioned under the tail end of this conveyer belt, and this wood chip discharging opening is connected with preheater.

Further, the outlet in the outlet in described the first impurity path and the second impurity path is all positioned at wind and washes outside cabinet.

Further, described wind is washed and on cabinet, is also provided with an access door.

Further, described the first impurity path, wood chip blanking path, the second impurity path are fixed on wind by support and are washed in cabinet.

The beneficial effect of a kind of Chip treatment device of the utility model is: by the waste gas utilization of dry cyclone separator generation, realize the recycling of resource; Dissimilar impurity is carried out to classification removing simultaneously, the various impurity on wood chip can be disposed effectively, and by the moisture content that can regulate wood chip of setting up of humidifier, avoid wood chip directly to enter preheat mode and occur the phenomenon of crackle or slight crack; In addition, tail gas can be more clean via secondary cyclone, thereby avoid tail gas to enter the problem that air pollutes, and has been improved the quality of medium density fibre board (MDF).

[accompanying drawing explanation]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the schematic diagram of a kind of Chip treatment device of the utility model.

[specific embodiment]

Refer to Fig. 1, a kind of Chip treatment device of the utility model, comprises that a wind washes unit 1, a preheater 2, dry cyclone separator 3 and a secondary cyclone 4, described wind is washed unit 1 and is comprised an appendix 11, one wind is washed cabinet 12, and be all positioned at wind and wash one first impurity path 13 of cabinet 12, one wood chip blanking path 14, one second impurity path 15 and a tail gas storehouse 16, described wind is washed a left side for cabinet 12, on right top, be respectively equipped with an air outlet 121 and a charging aperture 122, and the right side that this wind is washed cabinet 12 is provided with an air inlet 123 being close to this charging aperture 122, described appendix 11 is provided with an air blast 111, one end 112 of described appendix 11 is connected with the fume emission mouth 31 of dry cyclone separator 3, and the other end 113 of this appendix 11 is communicated with air inlet 123, the import 131 in described the first impurity path 13, the import 141 in wood chip blanking path 14, the import 151 in the second impurity path 15 and the import 161 in tail gas storehouse 16 be adjacent setting and be all positioned at air inlet 123 lower lefts successively from right to left, the import 131 in described the first impurity path 13 be positioned at charging aperture 112 under, described air outlet 121 is connected with the air inlet 41 of secondary cyclone 4, described wind is washed the wood chip discharging opening 161 that is also provided with a conveyer belt 17 and in cabinet 12 and is positioned at tail gas storehouse 16 left bottom, the head end 171 of described conveyer belt 17 is positioned under the outlet 142 in this wood chip blanking path 14 or lower right, one electric magnetic iron remover 181 and a humidifier 182 of adjacent setting are installed in described tail gas storehouse 16, and described electric magnetic iron remover 181 and humidifier 182 are all positioned at the back segment top of conveyer belt 17, described wood chip discharging opening 161 is positioned under the tail end 172 of this conveyer belt 17, and this wood chip discharging opening 161 is connected with preheater 2.

In the present embodiment, the outlet 132 in the first impurity path 13 and the outlet 152 in the second impurity path 15 can all be positioned at wind and wash outside cabinet 12; Wash the parts in cabinet 12 in order conveniently to observe and overhaul wind, wind is washed and on cabinet 12, is provided with an access door 124, and the first impurity path 13, wood chip blanking path 14, the second impurity path 15, electric magnetic iron remover 181 and humidifier 182 are all fixed on wind by support 19 and wash in cabinet 12.

When the utility model operation: fiber drying gas enters dry cyclone separator 3 by the entrance 32 of dry cyclone separator 3 to carry out after cyclonic separation, the tail gas producing enters in appendix 11 from fume emission mouth 31, and by air blast 111, tail gas is blasted to wind via air inlet 123 and wash in cabinet 12; Pending wood chip enters wind from charging aperture 122 and washes in cabinet 12, the tail gas blasting from air inlet 123 carries out wind and washes carrying out wood chip, specifically utilize metal, stone, wood chip, thin wood chip, dust to be subject to terrestrial gravitation carry out classification selection by winnowing different from free-falling distance under wind-force effect, metal on wood chip, stone are because own wt is larger, and jetting at air blast 111, blowing down is not far to be fallen into the first impurity path 13 and discharge via outlet 132; Wood chip itself falls in wood chip blanking path 14 and via outlet 142 and drops down onto on conveyer belt 17, in the time that wood chip is transferred into the back segment of conveyer belt 17, get rid of the metal impurities such as iron filings possible residual on wood chip by electric magnetic iron remover 181, and soaked by humidifier 182, wood chip falls into wood chip discharging opening 161 from the tail end 172 of conveyer belt 17 afterwards, then enters and in preheater 2, carries out preheating from wood chip discharging opening 161; Dust waste more falls in the second impurity path 15 because of it, and discharges by outlet 152; When tail gas blows to tail gas storehouse 16, temperature reduces, utilize the steam in tail gas to play preliminary wetting action to wood chip, and the heat energy that tail gas carries also can play preliminary pre-heat effect to wood chip, then tail gas flows to the air inlet 41 of secondary cyclone 4 via air outlet 121 and enters and in secondary cyclone 4, carries out cyclonic separation, the tail gas that makes finally to enter air is cleaner, thereby avoids contaminated air.

To sum up, the waste gas utilization that the utility model produces dry cyclone separator gets up, and realizes the recycling of resource; Dissimilar impurity is carried out to classification cleaning simultaneously, the various impurity on wood chip can be disposed effectively, and by the moisture content that can regulate wood chip of setting up of humidifier, avoid wood chip directly to enter preheat mode and occur the phenomenon of crackle or slight crack; In addition, tail gas can be more clean via secondary cyclone, thereby avoid tail gas to enter the problem that air pollutes, and improved again the quality of medium density fibre board (MDF).

Claims

1. a Chip treatment device, comprises that a wind washes unit, a preheater, it is characterized in that: also comprise dry cyclone separator and a secondary cyclone, described wind is washed unit and is comprised an appendix, one wind is washed cabinet, and be all positioned at wind and wash one first impurity path of cabinet, one wood chip blanking path, one second impurity path and a tail gas storehouse, described wind is washed a left side for cabinet, on right top, be respectively equipped with an air outlet and a charging aperture, and the right side that this wind is washed cabinet be provided with one with this charging aperture next-door neighbour's air inlet, described appendix is provided with an air blast, one end of described appendix is connected with the fume emission mouth of dry cyclone separator, and the other end of this appendix is communicated with air inlet, the import in described the first impurity path, the import in wood chip blanking path, the import in the import in the second impurity path and tail gas storehouse is adjacent setting and be all positioned at air inlet lower left successively from right to left, the import in described the first impurity path be positioned at charging aperture under, described air outlet is connected with the air inlet of secondary cyclone, described wind is washed the wood chip discharging opening that is also provided with a conveyer belt and in cabinet and is positioned at tail gas storehouse left bottom, the head end of described conveyer belt is positioned under the outlet in this wood chip blanking path or lower right, and an electric magnetic iron remover and a humidifier of adjacent setting are installed in described tail gas storehouse, described electric magnetic iron remover and humidifier are all positioned at the back segment top of conveyer belt, described wood chip discharging opening is positioned under the tail end of this conveyer belt, and this wood chip discharging opening is connected with preheater.

2. a kind of Chip treatment device according to claim 1, is characterized in that: the outlet in the outlet in described the first impurity path and the second impurity path is all positioned at wind and washes outside cabinet.

3. a kind of Chip treatment device according to claim 1, is characterized in that: described wind is washed and on cabinet, is also provided with an access door.

4. a kind of Chip treatment device according to claim 1, is characterized in that: described the first impurity path, wood chip blanking path, the second impurity path are fixed on wind by support and are washed in cabinet.