CN204054276U - For gluing together the device of wood shavings, fiber or like fibrous material in the process of manufactured materials plate - Google Patents

Abstract

A kind of in the process of manufactured materials plate for gluing together wood shavings, the device of fiber or like fibrous material, described plate of material is fiberboard, MDF, high fibre plate or fibrous thermal plate, composite wood boards or plastic plate, wherein, in mixing arrangement (22), wood shavings (24) are glued together with binding agent (5) with the pressure ratio corresponding to environmental pressure, or in the carrier pipe (1) being loaded with pumped (conveying) medium (20), use binding agent bonding fiber (2) or like fibrous material with the pressure ratio exceeding environmental pressure, described device is made up of mixing arrangement (22) or carrier pipe (1) and at least one nozzle (3), wherein said nozzle (3) is connected with described mixing arrangement (22) or carrier pipe (1) by least one opening (23), and described nozzle (3) place is provided with at least one binding agent pipeline (16), described binding agent pipeline is with pump (32), it is characterized in that, in order to curing agent (34) quantitatively being arrived binding agent (5) at binding agent pipeline (16) or in nozzle (3), another pump (33) is arranged to effectively be connected with curing agent pipeline (37).

Description

For gluing together the device of wood shavings, fiber or like fibrous material in the process of manufactured materials plate

Technical field

The utility model relate to a kind of in the process of manufactured materials plate for gluing together the device of wood shavings, fiber or like fibrous material.

Background technology

Be automation process at present by such as chip or medium density fiber or other flowable materials production plate of material, and use for many years in many countries.As known in the art, the chip processed or the compacting of fiber are cycle compactings or are cyclic pressing.At this, suppressing the chip processed or fiber is not be exactly periodically carry out continuously, but except raw-material quality, the quality of the distribution material cushion produced but is important factor.Manufacture in composite wood boards at heavy industrialization, adopt the forcing press of continuous operation to put into production, but part or single-stage or multistage forcing press.The demand of the inexpensive material plate be made up of natural material and artificial composite adhesives forces manufacturer to develop how efficient process.Here special emphasis be cost of energy, keep same quality under raw material and the saving of glueing material, and the equipment structure of the technical optimization that down time is short and loss is low.

The saving of energy cost that the field that the utility model relates to is the optimization that expends of adhesive and brings thus.Because when being optimized gummed with the adhesive that water content is few, not only because adhesive consumption reduces costs less, and the dry amount of the adhesive in chip/fiber in drying machine diminishes, and which again saves energy and cost.Substantially adhesive is interpreted as so-called bonding flotation fluid, its main component is made up of jointing material.Also added emulsifying agent, curing agent, formaldehyde adsorbent, dyestuff, insecticide, mould inhibitor and other additive etc. in addition as required.Usually the jointing material not having additive can also be used.At this moment, curing agent adds separately in mixing arrangement when needed mostly, mixes with curing agent to make binding agent.

As binding agent, do not ask complete, following material surely belongs to the row of consideration: isocyanates, MDI, melamine urea formaldehyde (MUF), urea-formaldehyde (UF), MUPF or PF.

In principle according to state of the art, in the production equipment for board made of particles or fiberboard, come veneer(ed) wood or fiber by means of nozzle.Now, on nozzle fragmentation binding agent chip binding agent being sprayed at movement or fiber.At this moment, be divided into three kinds of gluing methods: rotate mixing wood shavings on, fall or accelerate wood shavings on or in carrier pipe so that the fiber of high-speed motion to carry out sprinkling process.

Wood shavings are general as wood shavings supply, or produce at the scene and introduced gummed before or after oven dry.Fiber is mainly produced at the scene by fiber aeration apparatus, and between two mills, is transported to dryer by carrier pipe (English Blow Line (blowing pipeline)) after fiber is loose.Depending on equipment scale and structure, this carrier pipe can reach 100m.To carry out in the pipe of minor diameter in the process of carrying with very high speed better, bonding fiber, then sends into drying machine drying.Then, wood shavings or fiber spread on base plate, and by means of forcing press extrusion bar flitch.

Binding agent required for usual gummed introduces in carrier pipe by nozzle or in mixing arrangement (rotation of gummed bucket and/or the hybrid element with motion), binding agent is dispersed into little as far as possible by nozzle when spraying.

From DE 10 2,008 059 877 A1 with become known for gluing together the method and apparatus of wood shavings, fiber or like fibrous material from DE 10 2,011 007 336 A1 afterwards, adopt the method, binding agent before nozzle ejection with steam.At this moment, the optimum that the high temperature of steam and the interior extremely turbulent flowing of the hybrid chamber of nozzle should contribute to binding agent scatters.Especially when high pressure glues together, this is favourable, because preferably spray into the pressure than carrier pipe Nei Genggao when there is pressure in the carrier pipe of " blowing pipeline (Blow-Line) ".Can also control and regulate more subtly to spray into, because no longer include pressure differential, but the Optimal Distribution in carrier pipe or mixing arrangement is only conclusive criterion.Emphasize, particularly binding agent, MDI, UF, MUF and PF are suitable for spraying with method of the present utility model or device with liquid or suspended substance (semifluid) or dispersing morphology.

This method and apparatus is proved to be effective substantially, but find, when the bonding flotation fluid mixed with curing agent of advising is introduced, also before dissolving with steam, just have sclerosis tendency, and block the feed-in of bonding flotation fluid, and may cause running unsuccessfully owing to gluing together bad.Steam is possible especially in binding agent feed-in process and occurs regurgitating and may cause hardened beforehand.A problem is also had to be that bonding flotation fluid and curing agent are bonded near device rod member that is warm or heat.

As an alternative, binding agent and curing agent are applied on material to be glued respectively generally such shortcoming, and a kind of component or another component often occurred quantitatively, but also may occur that these components do not meet mixed proportion each other.When binding agent can not harden in time owing to lacking curing agent, and this plate can not keep steam during owing to lacking internal intensity, may split (steam-break (Dampferuptionen)) after forcing press.Breach effect plays in plate afterwards in pure curing agent district, this is because there is no binding agent, therefore, and the same internal bond lacking needs.

Utility model content

So task of the present utility model is, a kind of device for gluing together wood shavings and/or fiber overcoming above-mentioned shortcoming is proposed.

The solution of this task is for this bonding device, in order to by curing agent in binding agent pipeline or nozzle quantification to binding agent, be arranged to by another pump effectively be connected with curing agent pipeline, it is suitable for the flow regulating curing agent or binding agent.

Enough no longer need to clean binding agent pipeline immediately when the equipment short time shuts down compared with Canon now, preferably before stopping feeding binding agent, stop adding curing agent.In addition, can adjust more accurately now quantitatively, this is not simple like this when binding agent and curing agent add respectively.Curing agent generally also will mix with water by way of parenthesis when adding respectively, this must consider in moisture fluctuation in the process of manufactured materials plate, and this be actually do not wish occur because especially in the mill fine plate (MDF) time improve oven dry expense.Curing agent directly mixes particularly preferably in nozzle with binding agent.Especially better and advantageously, curing agent had been dissolved by steam and meticulous distribution before contacting with binding agent.Advantageously, better steam has made binding agent dissolve, or these three kinds independent compositions separately or combine and enter hybrid chamber.Each component is better especially to be regulated by pressure and/or by its flow in its proportioning each other.

On the annular gap nozzle of Fig. 1 and 2, particularly advantageously, need the quantity of steam of consumption little, this steam can disconnect, and this nozzle only uses as drive nozzle, and the atomizing pressure of binding agent can regulate by regulating annular gap or opening.

Be provided with hybrid blade particularly preferably in hybrid chamber, these hybrid blades mix the material flow through in the meaning of static mixer.

Also particularly preferably be, in order to be fed to curing agent and/or binding agent and use pump, these pumps can ripple control, such as, pass through impulse generator.By adopting this method, ensure can introduce accurately adjustable curing agent or binder amount to each nozzle.Ensure with this, each binding agent shower nozzle has sclerosis dosage that is correct and that need.

Nozzle advantageously configures like this, that is, the hybrid chamber being suitable for being formed steam blinding agent composition can separate with the feeding of jet chimney or curing agent.

Especially find surprisingly, now advantageously, the reaction time of curing agent and binding agent can be determined in time better, and generally speaking become evenly, to make can reach better plate quality due to sclerosis uniformly now.

At this moment, to be directly favourablely also, described device in mentioned nozzle area can easily or automatically, especially pre-defense sector cleans.Also eliminated the obstruction of shower nozzle or block, or allowing to be got rid of by corresponding adjusting device without difficulty.Equally, automatically cleaning effect can be provided by vapor flow or binding agent flowing (when they access).

In conjunction with or adopt separately other preferably embodiments:

● binding agent and curing agent can mix by means of static mixing element in hybrid chamber, preferably;

● the quantitative or flow of curing agent can according to binding agent Flow-rate adjustment;

● can curing agent be added with pulsing;

● can control by control or adjusting device or regulate access and the disconnection of curing agent and/or steam and/or binding agent and/or nozzle;

● binding agent or binding agent pipeline at least can cool from adding curing agent;

For this reason compared with fine piece of writing be independent feature or in combination specify:

● at binding agent pipeline or be provided with preferably with the hybrid chamber of static mixing element in nozzle;

● pump is suitable for pulsation ground quantitatively curing agent;

● at least beginning from feeding curing agent is become to the cooling settings of binding agent pipeline;

● for jet chimney be used for the nozzle of the hybrid chamber making binding agent and steam, curing agent pipeline is arranged to effectively be connected with jet chimney and/or hybrid chamber by affiliated pump.

This device is used for performing the method, but also can be used alone.

In the following description undertaken by subordinate claim and reference accompanying drawing, other favourable measures and the configuration of the utility model object will be found out.

Accompanying drawing explanation

Shown in accompanying drawing:

Fig. 1 is the profile of the device according to the first embodiment in the higher-pressure region of the nozzle with carrier pipe and exemplary suggestion;

Fig. 2 is the enlarged drawing being transitioned into carrier pipe from hybrid chamber according to Fig. 1;

Fig. 3 is the profile according to the device of the second embodiment in the atmospheric area with mixing arrangement and exemplary nozzle;

Fig. 4 is the simplification layout drawing of the signal nozzle with respective subsidiary pipeline in the first enforcement modification;

Fig. 5 is another enforcement modification according to Fig. 4;

Fig. 6 is another enforcement modification with additional steam pipeline according to Fig. 4;

Fig. 7 is the exemplary cooling device not having the feed conduit of nozzle in carrier pipe; And

Fig. 8 is the modification of the nozzle according to Fig. 1.

Detailed description of the invention

Fig. 1 and 2 represents that this device is made up of the carrier pipe 1 with wall 10 mainly also for the structure possible in principle of the device of implementation method, and in this carrier pipe, fiber 2 is transferred through at least one nozzle 3 by the pumped (conveying) medium 20 of flowing.For the sake of clarity save multiple nozzles 3 that carrier pipe 1 place is shown.In addition, the magnitude relationship of carrier pipe 1 and nozzle 3 or wall 10 is not represented in correct ratio.Nozzle 3 has adjusting device 4, and this adjusting device is such as effectively connected with shower nozzle 12 by tappet 11.Adjusting device 4 can regulate the size of opening 23 maybe can also be closed by shower nozzle 12 with this.Adjusting device 4 is unrestricted in its design, and on concrete arrangement, relate to the many possibilities (straight line conveyer, crank gearing, Ball Transmission or rack-driving, indirectly drive unit etc.) selected by professional.It is emphasized that be provided with hybrid chamber 7 in nozzle 3, steam 6 can be introduced in this hybrid chamber by binding agent pipeline 16 apart from each other by jet chimney 17, binding agent 5.Fluid and high pressure technique equipment (formation of high-pressure pump, conveying device, steam, jet chimney, check-valves, pressure gauge) can set up in the scope of corresponding professional's technical ability equally, according to the state of the art may or need find out this standarized component and load onto.In running in hybrid chamber 7 with opening 23 adjoiner and occur steam blinding agent composition 15 in the transition part office to carrier pipe 1 thus, steam blinding agent composition is preferably by controlling or mixing under pressure that the pressure set-point 25 at adjusting device 9 place is given in advance.At this moment, control or adjusting device 9 according to pressure set-point 25 or according to measurement mechanism 8 in hybrid chamber 7 place or the result measured in it, to be controlled by adjusting device 4 or to adjust the position of shower nozzle 12, and control or adjust the size of opening 23 with this.Control to improve or regulate, device has multiple measurement point.Such as, draw pressure in hybrid chamber 7 with measurement mechanism 8 and/or draw pressure in binding agent pipeline 16 with measurement mechanism 14 and/or draw pressure in jet chimney 17 with measurement mechanism 18 and/or draw the pressure in carrier pipe 1 or in mixing arrangement 22 with measurement mechanism 13.In order to optimize the method further, can by control or adjusting device 4 to control or regulate the size of pressure in hybrid chamber 7 and/or adjustable opening 16 according to the amount of binding agent 5 introducing carrier pipe.On the contrary, the corresponding relation relative to fiber 2 flow velocity can also be regulated or adjust.Binding agent 5 preferably with the pressure feed less than steam 6 to hybrid chamber 7.When making binding agent dissolve and discharge from hybrid chamber 7 with steam, this is favourable.In order to advantageously make curing agent 34 mix with binding agent 5 in technique, curing agent pipeline 37 is shown now, this curing agent pipeline directly passes into the jet chimney 17 of steam 6.This steam dissolves curing agent, and steam hardener mixture is sent into hybrid chamber 7, dissolves binding agent 5 further wherein.As an alternative or in combination, curing agent pipeline directly can also pass into hybrid chamber 7 or binding agent pipeline 16.

In atmospheric area having mixing arrangement 22 shown in Figure 3, according to the section of the device of the second embodiment.At this moment, this mixing arrangement is made up of the bucket 29 fixed, and its side is useful in the entrance of wood shavings 24, and opposite side has the outlet of the wood shavings 24 for gluing together.At this moment, this direction of arrow represents the current direction of wood shavings 24, and wood shavings are mixed by the hybrid blade 27 (being driven by motor 28) at mixing axle 26 place and transported in mixing arrangement.At upper area nozzle 3 with section display, and show the opening 23 of another nozzle 3 at rear side.Show another group nozzle 3 in phantom.In scope of the present utility model, nature only can also only arrange a nozzle 3 in a given case in input area.At this moment, shower nozzle 12 determines the opening 23 of nozzle 3, and is moved by adjusting device 4.

In mixing arrangement 22, preferably the steam 6 in jet chimney 17 is sent into hybrid chamber 7 with 3 to 16 bar absolute pressures.In another embodiment, in order to cementing agent is sent into mixing arrangement 22, by additional steam pipeline 19, additional steam 21 can be sent into mixing arrangement 22.At this moment, additional steam pipeline can also spray into bucket 29 from below, wood shavings are kicked up.

Here also show, curing agent pipeline 37 is arranged on nozzle 3, directly mixes with steam 6 and/or binding agent 5 to make curing agent 34.

The position of the access of steam 6 and disconnection or steam valve 30 controls preferably by the pressure given in advance controlled or adjusting device 4 exceedes in hybrid chamber 7 or regulates.The size of the pressure in hybrid chamber 7 and/or adjustable opening 16 can be controlled according to the amount of fiber 2/ wood shavings 24 passed through in carrier pipe 1 or in mixing arrangement 22 or regulate by control or adjusting device 4.Particularly, in order to measure in hybrid chamber 7 or the pressure at place and be provided with measurement mechanism 8, and/or measurement mechanism 14 can be provided with in order to measure binding agent pipeline 23 pressure that is interior or place, and/or in order to measure in jet chimney 17 or the pressure at place and be provided with measurement mechanism 18, and/or in order to measure in carrier pipe 1 or mixing arrangement 22 or the pressure at place and be provided with measurement mechanism 13.In order to control or regulate the size of opening 23 and/or steam valve 30, arrange control or adjusting device 4 be rational.In order to control or regulate the size of the pressure in hybrid chamber 7 and/or adjustable opening 16 according to binding agent 5 amount introduced in carrier pipe 1 or in mixing arrangement 22 and/or controlling the size of steam valve 30 of quantity of steam, control or adjusting device 4 can be provided with.As the steam valve 30 in jet chimney 17, valve or ball valve are particularly preferably set.The steam valve 30 of jet chimney 17 directly can separate with hybrid chamber 7 and to be formed and/or at least integral with nozzle 3.

Except pressure regulates, generally also need the proportion adjustment of steam, curing agent and binding agent, thus, be provided with arbitrarily flowmeter or volumeter.Especially in order to regulate binding agent and curing agent mixing ratio each other.

Fig. 4 to 6 is represented for mixing the nozzle of binding agent 5 and the replacement scheme of pipeline configuration carried in binding agent pipeline 16 by pump 32.By the static mixing device 7 dotted line display of pump 33 from the quantitative curing agent 34 of curing agent pipeline 37, and be optional.This curing agent binder mixtures finally arrives in nozzle 3, and sprays there.Can specify according to Fig. 5, this curing agent can also directly in this nozzle (this represents a preferred embodiment) and binding agent preferably to mix in optional static mixing chamber 7 (represented by dashed line) and discharging there.Indicate the impulse generator of pump 33 with 35, it should realize curing agent 34 to feed binding agent 5 with beat or pulsation.

Fig. 6,7 and 8 schematically represents the general view implementing modification, and wherein curing agent 34 is mixed with other components by curing agent pipeline 37 in nozzle 3 or device.

Although in the embodiment of described recommendation, propose to be used for bonding fiber or the carrier pipe 1 of like fibrous material and the mixing arrangement 22 for gluing together wood shavings, but this should not be construed as restrictive, but a large amount of device or blender or mixing arrangement can also be provided, their can obtain advantage by applying the nozzle advised and the method for advising.

Reference numerals list

1. carrier pipe

2. fiber

3. nozzle

4. adjusting device

5. binding agent

6. steam

7. hybrid chamber

8. measurement mechanism

9. control or adjusting device

10. wall

11. tappets

12. shower nozzles

13. measurement mechanisms

14. measurement mechanisms

15. steam blinding agent compositions

16. binding agent pipelines

17. jet chimneys

18. measurement mechanisms

19. additional steam pipelines

20. pumped (conveying) mediums

21. additional steams

22. mixing arrangements

23. openings

24. wood shavings

25. for 7 pressure set-point

26. mixing axles

27. hybrid blades

28. motor

29. barrels

30. steam valves

31. cooling devices

The pump of 32. 5

The pump of 33. 34

34. curing agents

The impulse generator of 35. 33

36. hybrid elements

37. curing agent pipelines

Claims (8)

1. one kind in the process of manufactured materials plate for gluing together wood shavings, the device of fiber or like fibrous material, described plate of material is fiberboard, MDF, high fibre plate or fibrous thermal plate, composite wood boards or plastic plate, wherein, in mixing arrangement (22), wood shavings (24) are glued together with binding agent (5) with the pressure ratio corresponding to environmental pressure, or in the carrier pipe (1) being loaded with pumped (conveying) medium (20), use binding agent bonding fiber (2) or like fibrous material with the pressure ratio exceeding environmental pressure, described device is made up of mixing arrangement (22) or carrier pipe (1) and at least one nozzle (3), wherein said nozzle (3) is connected with described mixing arrangement (22) or carrier pipe (1) by least one opening (23), and described nozzle (3) place is provided with at least one binding agent pipeline (16), described binding agent pipeline is with pump (32), it is characterized in that, in order to curing agent (34) quantitatively being arrived binding agent (5) at binding agent pipeline (16) or in nozzle (3), another pump (33) is arranged to effectively be connected with curing agent pipeline (37).

2. device as claimed in claim 1, is characterized in that, in binding agent pipeline (15) or in nozzle (3), be provided with hybrid chamber (7).

3. device as claimed in claim 1 or 2, is characterized in that, pump (33) is suitable for pulsation ground quantitatively curing agent (34).

4. device as claimed in claim 1 or 2, is characterized in that, cooling device (31) at least setting from introducing place of curing agent (34) at binding agent pipeline (15) place.

5. as the device of claim 1 or 2, it is characterized in that, for the nozzle (3) with jet chimney (17) and hybrid chamber (7), curing agent pipeline (37) is arranged to effectively be connected with jet chimney (17) and/or hybrid chamber (7) by affiliated pump (33), wherein, described hybrid chamber (7) is for hybrid adhesive (5) and steam (6).

6. device as claimed in claim 1, is characterized in that, described another pump (33) is suitable for the flow regulating curing agent (34) or binding agent (5).

7. device as claimed in claim 1, is characterized in that, described pump (32) is for introducing and jet binder (5) from deposit pipeline or reserving chamber.

8. device as claimed in claim 2, it is characterized in that, described hybrid chamber is with static mixing element (36).