CN107599116A - A kind of method for controlling particieboard Solution on Air Forming Equipment air-flow field characteristic - Google Patents
A kind of method for controlling particieboard Solution on Air Forming Equipment air-flow field characteristic Download PDFInfo
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- CN107599116A CN107599116A CN201711026110.5A CN201711026110A CN107599116A CN 107599116 A CN107599116 A CN 107599116A CN 201711026110 A CN201711026110 A CN 201711026110A CN 107599116 A CN107599116 A CN 107599116A
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Abstract
The method that the present invention provides the control particieboard Solution on Air Forming Equipment air-flow field characteristic that a kind of method is simple and convenient to operate.This method is in the case where standard mats formation status condition, keeps positive and negative pressure fan frequency certain, adjusts vertical throttle opening, and case interior air-flow field characteristic of mating formation changes therewith；When vertical throttle opening reduces, the position air speed value amplitude of variation on the abrupt-change cross section II of the mat formation anterior abrupt-change cross section I of case and close case afterbody of mating formation from low to high reduces；When vertical throttle opening increases, the position air speed value amplitude of variation on abrupt-change cross section I and abrupt-change cross section II from low to high increases；Airflow field turbulent flow phenomenon i.e. when vertical throttle opening increases is more than airflow field turbulent flow phenomenon when vertical throttle opening reduces.
Description
Technical field
The present invention relates to a kind of optimisation technique of Wood-based Panel Production technique, is a kind of control particieboard air-flow specifically
The method of spreading machine air-flow field characteristic, so as to improve Surface Quality of Steel Billet of mating formation.
Background technology
The airflow field for being to mat formation in case using the difficult point of airflow pavement particieboard belongs to large-scale airflow field, the stabilization of air-flow
Property it is affected by many factors with uniformity, it is difficult to realize to the effective control of airflow field, the debugging efforts of airflow field are even more to consume
Huge manpower, the scarcity of existing particieboard Solution on Air Forming Equipment airflow field debugging technique make sheet material final product quality effectively to protect
Barrier, and the uniformity of airflow field and stability directly affect the quality of plate blank paving, influence slab top layer physical property, follow-up sand
Light quality, top layer presentation quality；The good uniformity of airflow field and stability can not only improve the service efficiency of raw material, drop
Low production cost, and the comprehensive quality of Chipboard can be improved.Therefore, it is necessary to research and develop new technology to control particieboard gas
Flow spreading machine air-flow field characteristic.
The content of the invention
It is an object of the invention to provide the control size-grade particleboard surface sophistication that a kind of method is simple and convenient to operate
Method.
The method of control particieboard Solution on Air Forming Equipment air-flow field characteristic of the present invention, mats formation status condition in standard
Under, keep positive and negative pressure fan frequency certain, adjust vertical throttle opening, case interior air-flow field characteristic of mating formation changes therewith；When vertical
When throttle opening reduces, close to the anterior abrupt-change cross section I of case of mating formation and on the abrupt-change cross section II for case afterbody of mating formation from it is low to
High position air speed value amplitude of variation reduces；When vertical throttle opening increases, on abrupt-change cross section I and abrupt-change cross section II
Position air speed value amplitude of variation from low to high increases；Airflow field turbulent flow phenomenon i.e. when vertical throttle opening increases
Airflow field turbulent flow phenomenon when reducing more than vertical throttle opening.
The method of above-mentioned control particieboard Solution on Air Forming Equipment air-flow field characteristic, from low to high everybody on abrupt-change cross section I
The place's of putting air speed value is gradually increasing, and the position air speed value on abrupt-change cross section II from low to high is gradually reduced, that is, inside case of mating formation
Turbulent condition is presented in air-flow field characteristic.
The method of above-mentioned control particieboard Solution on Air Forming Equipment air-flow field characteristic, in the certain premise of positive and negative pressure fan frequency
Under, increase vertical throttle opening, mating formation, case interior air-flow speed is higher and flow field tends to concentration of local, reduces vertical throttle opening,
Case interior air-flow speed of mating formation is relatively low and flow field tends to be uniform.
Beneficial effects of the present invention：By vertical to particieboard Solution on Air Forming Equipment in particieboard airflow pavement production process
The regulation of air door, realize the control to particieboard Solution on Air Forming Equipment air-flow field characteristic.When the change of vertical throttle opening is big, gas velocity
The amplitude of concentration of local is presented in degree increase and air velocity, and case interior air-flow of mating formation field is easily disorderly, when the change of vertical throttle opening is small
Case interior air-flow characteristic variations amplitude of mating formation is opposite.When air velocity is higher and airflow field is disorderly, steel slab surface of easily mating formation
It is coarse, the defects of swirl shape and ripple clear shape；When air velocity is smaller and airflow field is uniform, steel slab surface of easily mating formation is smooth
The defects of degree difference and steel slab surface of mating formation remain featheriness wood wool.The inventive method passes through to the vertical throttle opening of airflow field
Regulation can realize the control of particieboard Solution on Air Forming Equipment air-flow field characteristic in a short time, mat formation matter so as to meet to take into account the above
The requirement of defect is measured, operating efficiency has been ensured again while quality is mated formation in raising.
Brief description of the drawings
Fig. 1 is particieboard Solution on Air Forming Equipment schematic diagram.
Air-flow field characteristic CFD simulation drawings when Fig. 2 is vertical throttle opening 100%.
Air-flow field characteristic CFD simulation drawings when Fig. 3 is vertical throttle opening 70%.
The overdraught VELOCITY DISTRIBUTION cloud atlas of abrupt-change cross section II when Fig. 4 is vertical throttle opening 100%.
The overdraught VELOCITY DISTRIBUTION cloud atlas of abrupt-change cross section II when Fig. 5 is vertical throttle opening 70%.
Embodiment
It is the specific embodiment of the present invention below, but the invention is not limited in these embodiments, without departing from the present invention
Thought spirit and scope under the details and form of technical solution of the present invention are modified or replaced, these modifications and replace
Each fall within protection scope of the present invention.
As shown in figure 1, particieboard Solution on Air Forming Equipment includes case 7 of mating formation, positive pressure fan 1 is by being arranged in case front portion of mating formation
Between horizontal air door 3 and vertical air door 4 to the anterior air-supply of case of mating formation, the air supply duct between positive pressure fan 1 and case front portion of mating formation
On be provided with air quantity uniform device 2；Top front of the outlet of chip metering device 5 positioned at case of mating formation；Negative-pressure air fan 10 passes through
Mat formation the upper and lower of case tail wind balance plate 8 it is upper and lower go out air door to case afterbody air draught of mating formation, negative-pressure air fan 10 and case tail of mating formation
Afterbody plate 9 is provided with air-suction duct between portion；It is plate blank conveying device 6 to mat formation below case.
Positive and negative pressure fan 1,10 starts, and metering device 5 is carried out down to shavings raw material after the interior flow field of case 7 of mating formation is stable
Material, distinguished and admirable act on for the air quantity uniform device 2 that shavings raw material is arrived realize sorting inside case of mating formation, force plane flower is in itself weight
The effect of power is deposited in time on plate blank conveying device 6 earlier than wood wool；By adjusting vertical throttle opening in pavement process
To realize effective control to particieboard Solution on Air Forming Equipment air-flow field characteristic.
In the case where standard mats formation status condition, that is, adjust the airflow field parameters Surface Quality of Steel Billet that makes to mat formation and reach standard shape
Under state, by changing vertical throttle opening, using multiple spot anemobiagraph to position in abrupt-change cross section I in case of mating formation, II short transverse
A、B、C（As shown in Figure 1）Wind speed test is carried out, relevant test data is shown in Table 1.
On the premise of positive and negative pressure fan frequency is certain, vertical throttle opening is adjusted, as the abrupt-change cross section wind speed of table 1 tests number
According to shown in table, the air speed value on section I, II also changes therewith, and case interior air-flow speed of mating formation when the change of vertical throttle opening is small is total
Body reduces；Case interior air-flow speed of mating formation when the change of vertical throttle opening is big totally increases.
I.e. air speed value rises successively from low to high from A to C for position on section I, and position is from low from A to C on section II
Decline successively to high wind speed value, that is, turbulent condition is presented in case internal gas flow field characteristic of mating formation.
When vertical throttle opening reduces, from A to C, amplitude of variation reduces air speed value successively for position on section I, II；When vertical
When throttle opening increases, from A to C, air speed value successively strengthen by amplitude of variation for position on section I, II, i.e., when vertical throttle opening increases
Airflow field turbulent flow phenomenon conspicuousness when big is more than airflow field turbulent flow phenomenon when vertical throttle opening reduces, as shown in Figure 2,3.
When vertical throttle opening integrally increases, turbulent flow and reflux state is presented in case interior air-flow of mating formation field, when vertical throttle opening reduces
When, stable and uniform state is presented in case interior air-flow of mating formation field.
Airflow field is simulated with CFD according to test data, as shown in Figure 4,5 the wind speed profile cloud atlas of section II,
On the premise of positive and negative pressure fan frequency is certain, increase vertical throttle opening, mating formation, case interior air-flow speed is higher and flow field tends to office
Concentrate in portion；On the premise of positive and negative pressure fan frequency is certain, reduce vertical throttle opening, case interior air-flow speed of mating formation is relatively low and flows
Field tends to be uniform.
The abrupt-change cross section wind speed test data table of table 1
Claims (3)
1. a kind of method for controlling particieboard Solution on Air Forming Equipment air-flow field characteristic, it is characterized in that：In the case where standard mats formation status condition,
Keep positive and negative pressure fan frequency certain, adjust vertical throttle opening, case interior air-flow field characteristic of mating formation changes therewith；When vertical air door
When aperture reduces, on the abrupt-change cross section II of the mat formation anterior abrupt-change cross section I of case and close case afterbody of mating formation from low to high
Position air speed value amplitude of variation reduces；When vertical throttle opening increases, from low on abrupt-change cross section I and abrupt-change cross section II
Increase to high position air speed value amplitude of variation；Airflow field turbulent flow phenomenon i.e. when vertical throttle opening increases is more than
Airflow field turbulent flow phenomenon when vertical throttle opening reduces.
2. the method for control particieboard Solution on Air Forming Equipment air-flow field characteristic as claimed in claim 1, it is characterized in that：Abrupt-change cross section
Position air speed value on I from low to high is gradually increasing, and the position air speed value on abrupt-change cross section II from low to high is gradual
Decline, that is, turbulent condition is presented in case internal gas flow field characteristic of mating formation.
3. the method for control particieboard Solution on Air Forming Equipment air-flow field characteristic as claimed in claim 1, it is characterized in that：In positive/negative-pressure
On the premise of blower fan frequency is certain, increase vertical throttle opening, mating formation, case interior air-flow speed is higher and flow field tends to concentration of local,
Reduce vertical throttle opening, case interior air-flow speed of mating formation is relatively low and flow field tends to be uniform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711026110.5A CN107599116A (en) | 2017-10-28 | 2017-10-28 | A kind of method for controlling particieboard Solution on Air Forming Equipment air-flow field characteristic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711026110.5A CN107599116A (en) | 2017-10-28 | 2017-10-28 | A kind of method for controlling particieboard Solution on Air Forming Equipment air-flow field characteristic |
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| CN107599116A true CN107599116A (en) | 2018-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543726A (en) * | 2019-09-04 | 2019-12-06 | 南京林业大学 | optimal design method for paving box structure of airflow paving machine |
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| CN200965330Y (en) * | 2006-08-21 | 2007-10-24 | 北京工业大学 | Super long-distance jet flow spout |
| CN203116936U (en) * | 2013-03-04 | 2013-08-07 | 襄阳达安汽车检测中心 | Wind resistance stability test device |
| CN204566321U (en) * | 2015-04-27 | 2015-08-19 | 苏州苏福马机械有限公司 | A kind of spreading machine airflow homogeneity adjusting device |
| CN107139308A (en) * | 2017-07-14 | 2017-09-08 | 湖北凯利板业有限公司 | A kind of straw powder material spreading machine |
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2017
- 2017-10-28 CN CN201711026110.5A patent/CN107599116A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965330Y (en) * | 2006-08-21 | 2007-10-24 | 北京工业大学 | Super long-distance jet flow spout |
| CN203116936U (en) * | 2013-03-04 | 2013-08-07 | 襄阳达安汽车检测中心 | Wind resistance stability test device |
| CN204566321U (en) * | 2015-04-27 | 2015-08-19 | 苏州苏福马机械有限公司 | A kind of spreading machine airflow homogeneity adjusting device |
| CN107139308A (en) * | 2017-07-14 | 2017-09-08 | 湖北凯利板业有限公司 | A kind of straw powder material spreading machine |
Non-Patent Citations (3)
| Title |
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| 300WQZ创建: "紊流", 《百度百科》 * |
| 于志明，李黎主编，谢拥群，高金贵本册主编: "《木材加工装备·人造板机械》", 30 September 2005, 中国林业出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110543726A (en) * | 2019-09-04 | 2019-12-06 | 南京林业大学 | optimal design method for paving box structure of airflow paving machine |
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Application publication date: 20180119 |
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