CN105189066B - For the forcing press by biomass production material plate and the method for operating pressure machine - Google Patents
For the forcing press by biomass production material plate and the method for operating pressure machine Download PDFInfo
- Publication number
- CN105189066B CN105189066B CN201480025734.3A CN201480025734A CN105189066B CN 105189066 B CN105189066 B CN 105189066B CN 201480025734 A CN201480025734 A CN 201480025734A CN 105189066 B CN105189066 B CN 105189066B
- Authority
- CN
- China
- Prior art keywords
- temperature
- heating plate
- conduction oil
- forcing press
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/062—Press plates
- B30B15/064—Press plates with heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
- B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
- B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
Abstract
The present invention relates to a kind of method for operating pressure machine and a kind of forcing presses for by biomass production material plate.Task of the invention lies in the energy consumptions for reducing the heating plate during forcing press is run for heated press.For method, the invention reside in provide the initial temperature (T with major loop (18) firstP) conduction oil and the conduction oil is fed to heating plate (4) by means of secondary pumps (20), wherein, before conduction oil enters heating plate (4), temperature (Tv) is flowed before measuring it, and measures its reflux temperature (T when leaving heating plate (4)R), wherein by the rotational speed regulation of secondary pumps (20) at make it is described before stream temperature (Tv) and the reflux temperature (TR) temperature difference (Δ Τ) keep constant.Forcing press according to the present invention includes：At least one heating plate (4), the heating plate have for guide conduction oil by heating channel (5)；For secondary pumps (20) that conduction oil is transported to heating channel (5), being located in secondary loop (19)；For stream temperature (T before measuringV) and reflux temperature (TR) at least one measuring device (7,8)；For by preceding stream temperature (TV) and reflux temperature (TV) constitute temperature gap (Δ T) device；And for according to as the temperature difference (Δ T) of regulated quantity come adjust the secondary pumps (20) rotating speed controller (14).
Description
Technical field
The present invention relates to a kind of method for operating pressure machine and a kind of pressures for by biomass production material plate
Power machine.
Background technology
The raw material made of biomass (e.g. wooden clast, fiber and/or fragment) is used in production material plate
Mixture adds adhesive and/or plastics again if necessary, which spreads by means of spreading station into pressed material
Pad, and be pressed into plate of material in a press using pressure and heat and harden.For the quality of plate of material, heating
Plate temperature THEspecially there is conclusive effect, temperature of heating plate THIt should be kept approximately constant in a press.Heating plate by means of
It flows through the fluid stream of the cycle of heating plate and rises to temperature of heating plate TH, wherein conduction oil or other suitable biography can be used
Thermal medium is as fluid.Here, carrying initial temperature TPConduction oil supplied by major loop, and by means of in secondary loop
Secondary pumps are fed to heating plate by regulating valve.
By 10 2,004 019 429 A1 of file DE it is known that in addition to temperature of heating plate TH, before conduction oil enters heating plate
Flow temperature TVAlso it is measured.Always it is significantly lower than initial temperature TPPreceding stream temperature TVMultiple parameters are generally depended on, but also main
It is determined by material to be extruded, used adhesive, compacting thickness, heating plate and its type of thickness and forcing press.
In the possible example for manufacturing particieboard, initial temperature TPValue be 290 DEG C, and preceding stream temperature TVValue be 260 DEG C.
Heat is obtained from the conduction oil by flowing through plate in pressing process, to which after leaving heating plate, conduction oil has
Lower temperature, i.e. reflux temperature TR, but according to prior art reflux temperature TRIt is not determined.Preceding stream temperature TVWith reflux temperature
Spend TRBetween temperature difference be adjusted accordingly based upon the decrement of heat, however equally also without temperature difference really
It is fixed.
At mixing point, there is reflux temperature TRMost of conduction oil with major loop initial temperature TPHeat conduction
Oil mixing.Regulating valve is always on herein to flow temperature Tv before reach rated temperature value, that is, reaching desired.In order to transport
Conduction oil uses the secondary pumps operated with constant rotational speed herein.
When forcing press is run, following different working condition can be distinguished herein：
It is in quasi-stationary state during constant production run.
Become hour, reflux temperature T in heat decrementRIt increases.Therefore, it is necessary to be mixed into the less heat conduction from major loop
Thus oil makes regulating valve close to closed state.At this point, secondary pumps continue to run with constant rotating speed, and then at complete negative
Under lotus, this leads to higher energy consumption.Conduction oil volume flow remains unchanged in secondary loop as a result,.
When heat decrement increases, reflux temperature TRIt reduces, and regulating valve is correspondingly opened, this is because must add
Enter has higher initial temperature T from major loopPMore conduction oils, so as to stream temperature T before reaching desiredV.But it is secondary
Pump is still run with constant rotating speed, and thus transports identical conduction oil volume flow always.
In heated press, conduction oil and heating plate in secondary loop are cold first.Therefore, conduction oil can have
Relatively high density and viscosity.But it means that in order to make conduction oil recycle, secondary pumps in the work temperature for reaching conduction oil
It is compared when spending and needs more energy.The power of the secondary pumps in secondary loop must be designed to make cold heat conduction always as a result,
Oil cycle, this is because power consumption is maximum at this time.
Task of the invention lies in be designed to the forcing press for the method for operating pressure machine and for production material plate
So that secondary pumps may be designed as smaller power and energy consumption is reduced during operation.
Invention content
This and the other tasks of the present invention according to method and forcing press as discussed in more detail below by means of realizing.
As solution, a kind of method for running for the forcing press by biomass production material plate is given,
Wherein this method includes following feature：
Initial temperature T with major loop is providedPConduction oil；
Conduction oil is fed to heating plate by the secondary pumps in secondary loop；
Before entering heating plate, the preceding stream temperature T of conduction oil is measuredV；
The reflux temperature T of conduction oil is measured when leaving heating plateR；
By the rotational speed regulation of secondary pumps at stream temperature T before makingVWith reflux temperature TRTemperature difference Δ Τ keep constant.
Preferably, adjusting the rotating speed of secondary pumps by frequency converter.
It is furthermore preferred that in the idle running or shutdown of forcing press, the rotating speed of secondary pumps is made to return to minimum speed.
Further, it is also preferred that in operating pressure machine, secondary pumps are operated first with maximum (top) speed until realizing to be achieved
Temperature of heating plate THUntil.
As another solution, a kind of forcing press for by biomass production material plate, the wherein pressure are given
Machine includes with lower component：
At least one heating plate, the heating plate have for guide conduction oil by heating channel；
For conduction oil to be transported to heating channel, secondary pumps in secondary loop；
At least one measuring device for stream temperature TV and reflux temperature TR before measuring；
Device for being made of temperature gap Δ T preceding stream temperature TV and reflux temperature TR；
For adjusting the controller of the rotating speed of secondary pumps according to as the temperature difference Δ T of regulated quantity.
It is furthermore preferred that forcing press includes upper heating plate and/or lower heating plate, heating plate and/or lower heating plate on this
It is heated by the same secondary loop.
A kind of forcing press is given as another solution, which includes upper heating plate and/or lower heating plate, is somebody's turn to do
Upper heating plate and/or lower heating plate are heated by separated secondary loop.
Additionally it is preferred that setting frequency converter is to adjust the rotating speed of secondary pumps.
It is according to the method for the present invention significant with the advantages of forcing press according to the present invention：During production run,
The rotating speed of secondary pumps can be obviously reduced in the case where temperature difference Δ Τ remains constant, this be conducive to significantly reduce energy consumption and
Resultant energy cost.
If forcing press for example only consumes a half-power in the case where heat consumption reduces, according to the prior art,
Conduction oil volume flow will produce the temperature difference of half in the case of keeping constant.However, can be by means of adjusting according to the present invention
The volume flow of conduction oil is halved.Thus reach significant power to save and the saving of resultant energy.Energy saving can
Reach 85% according to energy needed for the prior art.
Other advantageous measures of the present invention and the design scheme of object are by means of illustrating by being obtained in following the description.
Description of the drawings
The present invention is expanded on further by means of attached drawing.Wherein it is shown specifically the following contents：
Fig. 1 schematically shows a part for continuously operating press with side view.
Fig. 2 is illustrated for by the prior art of the heating plate of fluid stream cut-in pressure machine.
Fig. 3 shows the block diagram according to the present invention for controlling fluid stream.
Specific implementation mode
In Fig. 1 forcing press shown partially include the steel band 1 carried by rolling bar 2, with arrangement in the inner for
The heating plate 4 in the heating channel 5 of the fluid stream (such as conduction oil) of temperature adjustment and for directly measure heating plate towards rolling bar
The insertion sensor 6 of the temperature of 2 that side.In addition, can arrange the rolling plate 3 of hardening on hot plate, rolling bar 2 is rolled on the rolling plate 3
It is dynamic.
The connection of fluid stream 15 according to prior art as seen from Figure 2.
Conduction oil comes out in flowing 10 in the past, obtains initial temperature T in major loop 18 only shown partiallyP, the initial temperature
Spend TPIt may be, for example, 290 DEG C.The conduction oil of major loop 18 is fed to secondary loop 19 by regulating valve 23.Major loop is for example by mould
Block thermoelectricity unit energizes, and secondary loop 19 then energizes one or more heating plates 4 of forcing press.Enter heating in conduction oil
Before plate 4, stream temperature T before it is determined at measurement point 7V, the preceding stream temperature TVIt should be, for example, 260 DEG C.Here, constant heat conduction
Oil volume stream is driven by the secondary pumps 16 of constant rotational speed.Due in heating plate 4 heat reduce, conduction oil its leave heating plate it
There is lower reflux temperature TR afterwards.Most of conduction oil with reflux temperature TR is fed to secondary return again at mixing point 21
Road 19.But a part of conduction oil can be also fed in reflux 9 by valve 12 if necessary.In order to make preceding stream temperature TV keep permanent
It is fixed, it will be fed in secondary loop 19 from major loop 18 at mixing point 21 by opening regulating valve 23 to control conduction oil.
The case where for needing to be quickly cooled down heating plate 4, it is equipped with valve 13, which controls from the cooling for including cold conduction oil
The injection of reservoir 11.Thus, also heating plate can be made to reach the temperature less than 100 DEG C within a short period of time.
Fig. 3 shows the block diagram according to the present invention for controlling fluid stream.Conduction oil is presented via preceding stream 10 from major loop 18
It is sent to secondary loop 19.In addition, major loop 18 includes that by major loop 18, into secondary loop 19, (this passes through regulating valve for measuring
23 carry out) conduction oil volume flow measuring station 22.Conduction oil is for example with TP=290 DEG C of initial temperature leaves regulating valve
23。
At mixing point 21, the conduction oil from major loop 18 meets with the reflux from secondary loop 19.Reflux has
For example, 255 DEG C of reflux temperature TR, reflux temperature TRIt is determined at measurement point 8 and is transferred to controller 14 (dotted line).But
It should be understood that all temperature datas provided are only examples, it also can be unlike this.
After mixing point 21, the mixture for flowing into secondary loop 19 should have TV=260 DEG C of preceding stream temperature, in heat conduction
Oil measures the preceding stream temperature T before entering heating plate 4 at measurement point 7V, and equally by the preceding stream temperature TVIt is transferred to controller
14 (dotted lines).
Importantly, secondary pumps 20 have speed variable.In use by preceding stream temperature TVWith reflux temperature TRThe temperature of composition
In the case of poor Δ T, the rotating speeds of secondary pumps 20 adjusts (dotted line) at making temperature difference Δ T keep constant by controller 14.
Here, can also provide the possibility being quickly cooled down.
It when forcing press enters idle running, draws seldom or is not absorbed energy from heating plate 4 at this time, secondary pumps 20 turn
Speed can be reduced to minimum value by means of controller 14, to save energy.
In addition to preceding stream temperature TV, equally also can measure temperature of heating plate TH.Only when forcing press reaches preset heating plate temperature
Spend THWhen, for example before stream temperature TVWhen, pressed material pad can be just placed in forcing press to suppress.
When forcing press starts, heating plate 4 siphons away many heats from conduction oil first.It is thus particularly advantageous to pressing
When power machine starts, secondary pumps 20 are operated first with maximum speed until reaching the pre- temperature of heating plate T providedH。
Reference numerals list：
1 steel band
2 rolling bars
3 rolling plates
4 heating plates
5 heating channels
6 are inserted into sensor
Temperature measuring point is flowed before 7
8 reflux temperature measurement points
9 reflux
It is flowed before 10
11 cooling reservoirs
12 valves
The valve of 13 11 fronts
14 controllers
15 direction of fluid flow
16 secondary pumps
18 major loops
19 secondary loops
20 secondary pumps (have speed variable)
21 mixing points
The measuring station of 22 fluid streams
23 regulating valves
TPInitial temperature
TVPreceding stream temperature
TRReflux temperature
THTemperature of heating plate.
Claims (9)
1. a kind of method for running the forcing press by biomass production material plate has following feature：
There to be initial temperature (TP) conduction oil be supplied to secondary loop (19) via regulating valve (23) from major loop (18)；
The conduction oil is fed to heating plate (4) by the secondary pumps (20) in the secondary loop (19)；And
Before entering the heating plate (4), the preceding stream temperature (Tv) of the conduction oil is measured；
It is characterized in that following each feature：
Reflux temperature (the T of the conduction oil is measured when leaving the heating plate (4)R)；
By the rotational speed regulation of the secondary pumps (20) at make it is described before stream temperature (Tv) and the reflux temperature (TR) temperature
Poor (Δ Τ) is kept constant；And
Conduction oil is supplied to secondary loop (19) from major loop (18) to control by opening the regulating valve (23), so that
The preceding stream temperature (Tv) for obtaining conduction oil keeps constant.
2. the method as described in claim 1, which is characterized in that carry out the rotating speed to the secondary pumps (20) by frequency converter
Adjusting.
3. method as claimed in claim 1 or 2, which is characterized in that in the idle running or shutdown of forcing press, make the secondary pumps
(20) rotating speed returns to minimum speed.
4. method as claimed in claim 1 or 2, which is characterized in that when running the forcing press, the secondary pumps (20) are first
It is first operated with maximum (top) speed until realizing temperature of heating plate (T to be achievedH) until.
5. a kind of forcing press for by biomass production material plate, the forcing press includes with lower component：
At least one heating plate (4), the heating plate (4) have for guide conduction oil by heating channel (5)；
Regulating valve (23), the regulating valve are used to conduction oil being controllably supplied to secondary loop (19) from major loop (18)；With
And
For secondary pumps (20) that conduction oil is transported to heating channel (5), being located in secondary loop (19)；
It is characterized in that following each component：
For stream temperature (T before measuringV) and reflux temperature (TR) at least one measuring device (7,8)；
For by preceding stream temperature (TV) and reflux temperature (TV) formed temperature difference (Δ T) value device；
Controller (14), the controller (14) are used to adjust the secondary pumps according to as the temperature difference (Δ T) of regulated quantity
(20) rotating speed, so that stream temperature (Tv) and the reflux temperature (T before describedR) temperature difference (Δ Τ) keep constant, and
And for by the regulating valve (23) control at making conduction oil be supplied to secondary loop (19) in this way from major loop (18) so that
The preceding stream temperature (Tv) of conduction oil keeps constant.
6. forcing press as claimed in claim 5, which is characterized in that the forcing press includes upper heating plate and/or lower heating plate
(4), the upper heating plate and lower heating plate (4) are heated by the same secondary loop (19).
7. forcing press as claimed in claim 5, which is characterized in that the forcing press includes upper heating plate and/or lower heating plate
(4), the upper heating plate and lower heating plate (4) are heated by separated secondary loop (19).
8. forcing press according to any one of claims 5 to 7, which is characterized in that it is described to adjust to be provided with frequency converter
The rotating speed of secondary pumps (20).
9. forcing press as claimed in claim 5, which is characterized in that the forcing press is for implementing according in claim 1-4
Any one of them method.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013104648.7 | 2013-05-06 | ||
| DE201310104648 DE102013104648A1 (en) | 2013-05-06 | 2013-05-06 | Method for operating a press and press for producing biomass material panels |
| PCT/EP2014/059266 WO2014180863A1 (en) | 2013-05-06 | 2014-05-06 | Method for operating a press and press for producing material panels from biomass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105189066A CN105189066A (en) | 2015-12-23 |
| CN105189066B true CN105189066B (en) | 2018-07-27 |
Family
ID=50771246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480025734.3A Expired - Fee Related CN105189066B (en) | 2013-05-06 | 2014-05-06 | For the forcing press by biomass production material plate and the method for operating pressure machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2994281A1 (en) |
| CN (1) | CN105189066B (en) |
| DE (1) | DE102013104648A1 (en) |
| WO (1) | WO2014180863A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825803B (en) * | 2017-09-22 | 2019-12-03 | 生益电子股份有限公司 | Laminating machine energy-saving heating system |
| DE102019004886A1 (en) * | 2019-07-11 | 2021-01-14 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Printing plate arrangement in a press |
| CN115256568A (en) * | 2022-08-17 | 2022-11-01 | 崇左广林迪芬新材料科技有限公司 | Heat conduction oil system of continuous flat-pressing plywood production line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3556201A (en) * | 1968-03-25 | 1971-01-19 | Konus Kessel Ges Fur Warmetech | Method and apparatus for heating and cooling presses and the like |
| CN1689777A (en) * | 2004-04-19 | 2005-11-02 | 迪芬巴赫有限两合公司 | Quick cooling method of heating plate of continuous operation press and continuous press |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3785352B2 (en) * | 2001-11-20 | 2006-06-14 | 株式会社名機製作所 | Hot press temperature control method |
| US6983684B2 (en) * | 2002-01-22 | 2006-01-10 | Huber Engineered Woods Llc | Modified high-temperature pressing apparatus |
| JP5546176B2 (en) * | 2009-07-28 | 2014-07-09 | 株式会社名機製作所 | Hot press apparatus and temperature control method for hot press apparatus |
-
2013
- 2013-05-06 DE DE201310104648 patent/DE102013104648A1/en not_active Withdrawn
-
2014
- 2014-05-06 CN CN201480025734.3A patent/CN105189066B/en not_active Expired - Fee Related
- 2014-05-06 EP EP14725389.2A patent/EP2994281A1/en not_active Withdrawn
- 2014-05-06 WO PCT/EP2014/059266 patent/WO2014180863A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3556201A (en) * | 1968-03-25 | 1971-01-19 | Konus Kessel Ges Fur Warmetech | Method and apparatus for heating and cooling presses and the like |
| CN1689777A (en) * | 2004-04-19 | 2005-11-02 | 迪芬巴赫有限两合公司 | Quick cooling method of heating plate of continuous operation press and continuous press |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2994281A1 (en) | 2016-03-16 |
| CN105189066A (en) | 2015-12-23 |
| DE102013104648A1 (en) | 2014-11-20 |
| WO2014180863A1 (en) | 2014-11-13 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180727 Termination date: 20210506 |