CN1255256C

CN1255256C - Method and installation for selective preparation of compression material from different raw material in production of compression material mats, more particularly chipboard

Info

Publication number: CN1255256C
Application number: CN 99102124
Authority: CN
Inventors: 罗尔夫·特鲁默
Original assignee: G Siempelkamp GmbH and Co KG
Current assignee: Siempelkamp Giesserei KG; G Siempelkamp GmbH and Co KG
Priority date: 1998-02-21
Filing date: 1999-02-11
Publication date: 2006-05-10
Anticipated expiration: 2019-02-11
Also published as: CN1234335A; DE19807622C1; MY131806A

Abstract

The present invention relates to methods and apparatus for selectively preparing pressed materials from different raw materials in the manufacturing of pressed pad, more specifically chipboards. In more detail, preparation of raw material for the following crush operation, that is coring or cutting, and if required, middle-storing the raw materials to compensate any quantitative changes of the raw materials. The materials are dried in a drying device(3), according to the required residual moisture levels, and then passed to a grinding mill(4), wherein the raw material is crushed down. Or the material flow can be reversed while replacing the grinding mill(4), where the raw material is crushed down in the grinding mill(4)before drying(3). The pulverized material, as pressed material, is sorted according to the particle sizes and formed into a mat, together with a bonding agent if required, to be pressed into chipboards.

Description

Be used for optionally preparing from different raw material the method and the equipment of compression material in the production of staypak backing strap

Technical field

The present invention relates to a kind of production that is used at the staypak backing strap, more specifically say so and in the production of board made of particles, prepare the method for compression material from a kind of raw material, this method is recognized from practice, wherein prepare raw material to be used for pulverising step subsequently, ready if desired afterwards material is stored the variation with compensation raw material quantity mid-term, raw material after the pulverizing are finally by sorting, compression material is formed a staypak backing strap according to the size of its chip, can adopt gluingly if desired in this process, be extruded at last.

Background technology

The staypak backing strap, more particularly board made of particles is formed by wood-fibred usually, the processed formation chip of these wood-fibreds.This wood chip is obtained as making its desiccation more afterwards by the broken wood-fibred of cutting under the wet state usually.

Except above-mentioned wood-fibred (as fibre source), can also mainly adopt vegetative fiber.These are used as the raw material of papermaking or plate usually.During raw material in it is produced as the staypak backing strap, need to begin a drying process that is right after after crushing operation.Under any circumstance, the raw-material difference according in producing as the staypak backing strap needs to adopt very inconsistent method for subsequent processing.Because different certain raw material separately of staypak backing strap production plant geographic location only can obtain in some time, accurately considered these situations after, will find to do so very complicated and cost is higher.In the past,, this problem is overcome by storing raw material to tide over not this raw-material period.But, even this method cost is also very high, starting point of the present invention that Here it is.

Summary of the invention

The purpose of this invention is to provide a kind ofly in the production of staypak backing strap, more particularly in the production of board made of particles, prepare the method for compression material, by this method, can at low cost very different raw material be treated to compression material from raw material.Simultaneously, the present invention also provides a kind of equipment that is particularly suitable for this purpose.

In order to address this problem, the present invention has provided a kind of being used at the staypak backing strap, more particularly optionally prepares the method for compression material in the production of board made of particles from different raw material, and this method comprises the steps:

(a) prepare the pulverising step of raw material, also be about to the raw material coring or cut into slices in order to the back,

(b) if desired ready raw material mid-terms is stored compensating the variation of any raw material quantity, thereby guarantee that important process device (pulverize/pulverizes, drying is glued together) balancedly works.Used raw material are vegetative fibers, and these fiber dryings are rolled into residual humidity later on extremely less than 5% percentage by weight, and perhaps, used raw material are wood fibre, and this fiber is shredded, and is dried afterwards to having the humidity of 80% to 100% percentage by weight.

(c) according to the ready raw-material setting humidity that is used to pulverize, this material at first is dried in a drying device, then in a reducing mechanism, pulverized, perhaps flow to and the conversion reducing mechanism according to opposite material, at first in reducing mechanism, pulverize this material, then with it at the drying device inner drying.

(d) material crushed at last as compression material according to its crumb size by sorting, afterwards as need to adopt gluing method, be extruded at last and form a staypak backing strap.

By these steps of the present invention, at first can use diverse raw material to prepare compression material.Basically, according to the setting humidity of the ready material that is used to pulverize, step " pulverize (pulverize or shred)-dry " can also can be according to opposite order enforcement according to this order.This just means, if used raw material must be pulverized by rolling, so just must at first carry out drying and roll required humidity to reach.On the other hand, if raw material are shredded under wet condition, so described drying process should carried out thereafter.No matter the sort of situation, two processes are implemented by same drying device and same reducing mechanism.For this reason, needed only is to change the flow direction of material and conversion reducing mechanism (change chopping into from pulverizing, otherwise or).Because adopting same equipment by this method can be compression material with different raw material alternate treatment just, therefore saved the complete equipment of a cover substantially.

Except saving considerable cost, the inventive method another one advantage is not to be subjected to basically by the whole process of the inventive method the influence of single raw material harvest season.If a kind of raw material, as vegetative fiber, only can obtain, at this moment in a certain specific period in certain time, still can tide over without difficulty twice the period between the results, for example by adopting a kind of raw material that constitute by wood-fibred to substitute this vegetative fiber that can not obtain this period.In a word, need not consider on the certain degree of the present invention whether raw material can obtain.For the geographical position and results the time aspect this all be suitable for.Correspondingly, adopt after the inventive method, described production process can be used in the world, is applicable to different climatic provinces or harvest season.

The present invention also can other benefit.For example, used reducing mechanism is mainly a pulverizer, and this pulverizer can change a cutting ring shredding machine into.This conversion is very simple, and undoubtedly is feasible, has brought the basic element of character that benefit is a pulverizer simultaneously, also is driver part, transfer member, and shells etc. can remain, because what will change only is rotary part.But can realize the reverse of material stream by a kind of reverse transfer device.In this case, transmitting device is conveyed into reducing mechanism along pulverizing transmission direction with the raw material in the drying device substantially, and the material that will pulverize outwards transfers out reducing mechanism.Conveying device is operated in the following manner along the chopping throughput direction, and raw material chopped are conveyed into drying device in reducing mechanism, and dried raw material are outwards transferred out drying device.Therefore, aforementioned conveying device can mainly be worked under two kinds of operative orientations, also promptly along pulverizing throughput direction and edge chopping throughput direction.Only could be pulverized under the state of doing when also promptly pulverizing when used raw material, conveying device is according to pulverizing throughput direction work.If used raw material are pulverized when also promptly shredding and wet, adopt the chopping throughput direction so.In any case conveying device needs a kind of operation that can be reverse, so that material stream can be reversed.

Before conveying device was carried out conveying operations, raw material were substantially through storing the variation with the compensation raw material streams mid-term.If must come the production compression pad with the extruding station of a continuous operation, do being even more important like this.Shred/pulverize, operating procedure dry and gummed must be carried out according to a constant amount as much as possible.But, in such cases, special design standard must be taken into account a corresponding equipment, to be applicable to different material behaviors, the volume weight of more specifically saying so is (with KG/M ³The density of transporting storage material of metering).

For raw material chopped, it may contain some thicker chip.In order to eliminate this defective, according to the present invention, raw material chopped also will be by air separation to remove any thicker chip in minute selection operation.This air separation can make the heavier composition in the raw material remove at an easy rate.This is because the horizontal velocity component that air blast applies in addition is difficult to make this composition to depart from its vertical direction, but can make lighter composition along the parabola directional steering.

Used raw material are mainly vegetative fiber, for example, sugarcane fiber, its be laminated to after the exsiccation a remaining wet composition on weight less than 5%, preferably be about 2%.Certainly, bagasse is the residue of sugaring sugarcane, and sucrose wherein is extracted.Under the state of doing, bagasse is measured by weight and is contained 40 to 60% the cellulose of having an appointment, about 20 to 30% pentosan and about 20% lignin.Up to now, it mainly is used as the fuel in the sugaring.But its raw material that can be used as in papermaking or the making sheet also are known.According to the present invention, bagasse is used for compression pad as the waste product in the sucrose production, more particularly can produce good benefit in the production of board made of particles.Because rough bagasse can only obtain in 6 months in 1 year usually, the time period between twice results time must tide over by suitable storage or by substituting these raw material.The raw material that can be used to substitute are wood-fibreds, eucalyptus fibers for example, and this fiber has and accounts for 80 to 100% wet composition on the weight, and it is shredded then earlier and is dried.Eucalyptus is the very fast tree that grows, and whenever obtains them in can 1 year, and therefore the wood-fibred that obtains from eucalyptus according to the present invention can replace sugarcane fiber in the period that can not obtain bagasse.

The invention still further relates to a kind of production that is used in compression pad, more particularly in the production of board made of particles, optionally prepare the equipment of compression material from different raw material, this equipment comprises a preparation device, be used for preparing the used raw material of back crushing operation, this equipment have one optional mid-term storage device with the quantitative any variation of compensation raw material, this equipment comprises a drying device and a reducing mechanism; Comprise that also one is used for pulverized raw-material sorting unit, a compression material pulvilliform apparatus for converting and an extruding station; Wherein, described reducing mechanism is constructed to a grinding mill, and this grinding mill has a removable wing formula destroyer and a filtering ring, and described wing formula destroyer can be replaced by a cutter ring to form a cutter ring cutting millstone; For oppositely with described material stream, be provided with an oppositely conveying device that has one first mechanical conveyer and one second mechanical conveyer, described first and second conveyers are respectively along pulverizing throughput direction and the work of edge chopping throughput direction; And described first conveyer places between described drying device and the described reducing mechanism, and described second conveyer places between described reducing mechanism and the described drying device.

Description of drawings

Explain the present invention below in conjunction with the accompanying drawing that one embodiment of the invention only is shown, wherein:

Fig. 1 is the block diagram according to the armament-related work process of the inventive method operation.

Fig. 2 is the details drawing of equipment shown in Figure 1, until pulverized raw material production stores vegetative fiber, factory's improvement part when for example adopting sugarcane fiber if be shown in dotted line to adopt.

Fig. 3 shows other processing procedure that is formed compression material and then formation staypak backing strap by comminuted starting materials.

Fig. 4 is the details drawing of reducing mechanism, and

Fig. 5 a and 5b show the replacing parts (rolling with respect to stone mill) of reducing mechanism respectively.

The specific embodiment

Accompanying drawing shows one and is used at the staypak backing strap, more particularly optionally prepares the equipment of compression material in the production of board made of particles from different raw material.In its primary structure, this equipment (see figure 1) comprises preparation device 1a, a 1b, one mid-term storage device 2a, 2b, a drying device 3, a reducing mechanism 4, oppositely conveying device 5a, a 5b, a sorting unit 6, one compression material pulvilliform apparatus for converting 7 and last extruding station 8.

Conveying device

5a, 5b be place pulverize/shred and the separator (centrifugal) in drying device downstream under the collecting conveyor of side.

Preparation device

1a, 1b independently make, and comprise that respectively one is used for preparation device (a coring machine) 1a of sugarcane fiber and preparation device (slicer) 1b that is used for eucalyptus fibers.In the sugarcane fiber set-up procedure, carry out the coring operation, the set-up procedure of eucalyptus fibers is mainly section then.Each in mid-term storage device 2a, 2b be used to compensate raw material dry or shred/pulverize operation before quantitative any variation.Drying device 3 is cylindrical dry stoves.Reducing mechanism 4 is built as the factory 4 that mills, and this factory 4 that mills has replaceable wing formula destroyer 4d and screening ring 4a (see figure 5) of a prior art.Wing formula destroyer 4d can change and make an impact ring 4b, and screening ring 4a can change and make a cutter ring 4c to form a cutting ring chopper (seeing Fig. 5 b).According to pulverizing the required raw-material humidity of preparation, raw material at first are dried in drying device 3, in reducing mechanism 4, pulverized afterwards, perhaps, if material stream is reversed, reducing mechanism 4 is replaced, and raw material are at first shredded in reducing mechanism 4 so, is dried in drying device 3 afterwards.Then, pulverized raw material are by a sorting unit 6 and a compression material pulvilliform apparatus for converting 7, at last by extruding station 8.For the wood-fibred type, sorting unit 6 adapts with the specification requirement of wood-fibred board made of particles equipment aspect basically, but when adopting vegetative fiber (considering volume weight and particle size) just to need independent member to meet its requirement especially.Certainly, if with after this method adjustment, just can be fit to various raw material by some simple steps (for example change the width of the filter mesh of sieves, regulate separator, and change the sorting order number of superficial layer grinding mill).

Clearly show that the reverse of material stream among Fig. 1.For example, as raw-material sugarcane fiber at first by preparation device 1a, afterwards by storage device 2a in mid-term, then at drying device 3 inner dryings so that its residual humidity accounts for 2% on weight.Then, this material is by the storage device 2a in mid-term of holding vessel form.Be ready to and be dried after raw material (herein for sugarcane fiber) next be transported to reducing mechanism 4 along pulverizing throughput direction M by the first mechanical transmission device 5a.Because the sugarcane fiber of doing must be pulverized, reducing mechanism 4 is grinding mills 4 that have a wing formula destroyer and filtering ring 4a.Finish pulverize step after, pulverized and dry sugarcane fiber after by the second mechanical transmission device 5b along pulverize throughput direction M be transported to sorting unit 6, compression pad form device 7, and last extruding station 8 further to handle.Pulverize after the step, pulverized and the sugarcane fiber that is dried by (centrifugal) seperator 10.

Eucalyptus fibers is equipped by the present invention along chain-dotted line.In preparation device 1b, carry out sectioning and pass through after the storage device 2b in mid-term directly execution chopping operation in reducing mechanism 4.At this moment, the latter is a cutting ring shredding machine, and wing formula destroyer 4d is changed makes to impact ring 4b, and filtering ring 4a is changed makes cutter ring 4c.After eucalyptus fibers was pulverized and shredded, by the seperator 10 and the second conveyer 5b, Z was transported in the drying device 3 along the chopping throughput direction.The processing stage of sugarcane fiber being delivered directly to next this conveyer 5b this moment of (along pulverizing throughput direction M) according to another mode work so that make eucalyptus fibers chopped without any other processing but directly be dried (along chopping throughput direction Z).Since the first conveyer 5a current not according to pulverizing throughput direction M operation (as sugarcane fiber time situation) with chopping throughput direction Z operation, so after the drying process, the processing stage of connecing other behind the seperator 9.

The first conveyer 5a places between drying device 3 and the reducing mechanism 4, and the second conveyer 5b places (see figure 1) between reducing mechanism 4 and the drying device 3.9,10 1 of described seperators place between the drying device and the first conveyer 5a, and another places between the reducing mechanism 4 and the second conveyer 5b.In addition, the deaerator 11 that is connected with sorting unit 6 should make any being discharged from than megaclast in the raw material chopped (also being eucalyptus fibers).

Above explained total course of work pattern of the present invention's equipment, described some details below in conjunction with accompanying drawing 2 and 3.For example, parts, be mid-term storage device 2a be a buffer that is used for evenly carrying out drying process.The core of separating in preparation device 1a is returned to the sucrose of the producing bagasse factory's (not shown) of milling.Reducing mechanism 4 is made into suitable dimension in each case so that the eucalyptus of producing bits or its Size Distribution of pulverized sugarcane fiber are suitable for being used for producing the staypak backing strap.

Raw material are divided into four parts basically in sorting unit 6:

-oversize composition

-be suitable for use as the chip of a core layer

-be suitable for use as the chip of a superficial layer

-waste material

Oversize or thicker chip can be removed by deaerator 11, afterwards it be imported the reducing mechanism of back.The chip that is suitable for use as the production of staypak backing strap is all stored by mid-term in each case, so that can produce three layers staypak backing strap basically, more particularly produces board made of particles, also promptly has the pad/plate of a sandwich layer and two superficial layers.The thickness of the board made of particles of producing according to this kind method is between 6 to 30mm, and such plate is suitable for use as furniture industry or other common application.Form in the cushion device 7 at compression material, each all makes superficial layer and sandwich layer separately, afterwards by other gluing method glue together.In air separator, superficial layer has had a smooth surface.Extruding station 8 is suitably manufactured the pressurizing unit or a continuously extruded device of a cycling, this pressurizing unit has the bottom that a top and that has pressing plate has pressing plate, and be provided with the steel plate compressive zone, these compressive zones are driven in continuous motion on the reverse rotary drum, the upstream of this compressive zone top board forms one and is used for the output clamping device of compression pad and forms a top clearance in platen region.These are all in detail known by the public, are not re-used as theme of the present invention.

Claims

1. one kind is used for optionally preparing the method for compression material in the production of staypak backing strap from different raw material, and this method comprises following method step:

(a) the preparation raw material are prepared against crushing operation subsequently;

(b) according to the ready raw-material setting humidity that is used to pulverize, at first that this material is dry in a drying device (3), then pulverized at reducing mechanism (4), perhaps make material stream oppositely and change reducing mechanism (4), earlier it is shredded in reducing mechanism (4), dry in drying device (3) afterwards;

Used raw material are vegetative fibers, and these fiber dryings are rolled into residual humidity later on extremely less than 5% percentage by weight, and perhaps, used raw material are wood fibre, and this fiber is shredded, and is dried afterwards to having the humidity of 80% to 100% percentage by weight;

(c) pulverized material is used as compression material at last according to its crumb size sorting, finally pushes these materials and forms a staypak backing strap, also is glued before extruding.

2. the method for claim 1 is characterized in that: ready raw material are stored with the quantitative any variation of compensation raw material mid-term.

3. method as claimed in claim 1 or 2 is characterized in that: described reducing mechanism (4) is a roller (4), and this roller can be converted to a cutting ring shredding machine.

4. method as claimed in claim 1 or 2 is characterized in that: what described material flowed is reverse by oppositely conveying device (5a, a 5b) realization.

5. method as claimed in claim 4, it is characterized in that: described conveying device (5a, 5b) will be transported in the conveying device (4) by dried raw material in described drying device (3) along pulverizing throughput direction (11), and the raw material that will pulverize clear out from described reducing mechanism (4), and it is outwards sent.

6. method as claimed in claim 4, it is characterized in that: described conveying device (5a, 5b) is transported in the drying device (3) along the raw material that chopping throughput direction (Z) will shred in described reducing mechanism (4), and dried raw material are removed away from drying device (3), it is outwards sent.

7. the method for claim 1 is characterized in that: passed through air separation in addition to remove any thicker particulate at raw material chopped described in minute selection operation.

8. the method for claim 1 is characterized in that, described vegetative fiber in drying to be laminated to residual humidity less than 2% percentage by weight.

9. the method for claim 1 is characterized in that, described vegetative fiber is a sugarcane fiber.

10. the method for claim 1 is characterized in that, described wood fibre is an eucalyptus fibers.

11. equipment that is used for optionally preparing from different raw material compression material in the production of compression pad, this equipment comprises a preparation device (1a, 1b), be used for preparing the used raw material of back crushing operation, this equipment has an optional storage device in mid-term (2a, 2b) with the quantitative any variation of compensation raw material, and this equipment comprises a drying device (3) and a reducing mechanism (4);

Comprise that also one is used for pulverized raw-material sorting unit (6), a compression material pulvilliform apparatus for converting (7) and an extruding station (8);

Wherein, described reducing mechanism (4) is constructed to a grinding mill, and this grinding mill has a removable wing formula destroyer and filtering ring (4b), and described wing formula destroyer can be replaced by a cutter ring (4c) to form a cutter ring cutting millstone;

For described material stream is reverse, be provided with an oppositely conveying device (5a, 5b) that has one first mechanical conveyer (5a) and one second mechanical conveyer (5b), described first and second conveyers (5a, 5b) are respectively along pulverizing throughput direction (M) and working along chopping throughput direction (Z); And

Described first conveyer (5a) places between described drying device (3) and the described reducing mechanism (4), and described second conveyer (5b) places between described reducing mechanism (4) and the described drying device (3).

12. equipment as claimed in claim 11 is characterized in that: described sorting unit (6) comprises that one is used for raw-material deaerator chopped (11) to remove any thicker chip.