CN103306155B - Circumference bistrique and multiscrew extruding kneader, pulping process - Google Patents
Circumference bistrique and multiscrew extruding kneader, pulping process Download PDFInfo
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- CN103306155B CN103306155B CN201210105793.4A CN201210105793A CN103306155B CN 103306155 B CN103306155 B CN 103306155B CN 201210105793 A CN201210105793 A CN 201210105793A CN 103306155 B CN103306155 B CN 103306155B
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Abstract
Circumferential bistrique of the present invention adopts brand-new circumferential lapping mode, gap between the quiet roll flute that fiber is inwardly arranged by dynamic roll flute and the lining tile circumferencial direction of rotary bistrique circumferencial direction, when not affecting fibre length, the quantity of bundle fiber in slurry can be greatly reduced, efficient defibrating, thus deduction degree (improving deduction degree 3-8 degree in first paragraph slurrying) can be improved, do not change again the quality of slurry.Multiscrew extruding kneader (comprising twin-screw extruder kneader) of the present invention adopts described circumferential bistrique to replace traditional disc mill, when not increasing power disposition and equipment cost, the content of bundle fiber can be effectively reduced, decompose fiber rate more than 70%, thus no longer need the operation of follow-up high-density paste mill, save equipment cost and energy ezpenditure.
Description
Technical field
The present invention relates to a kind of circumferential bistrique, particularly a kind of circumferential bistrique for pulp industry, and adopt twin-screw extruder kneader and the pulping process of this circumferential bistrique.
Background technology
Multiscrew extruding kneader, such as twin-screw extruder kneader comes from the twin (double) screw extruder of plastics and food industry, be utilize plastic extrusion engineering philosophy and modern paper slurrying theoretical and a kind of high yield pulp1, multi-functional, the energy-saving cleaning machine pulping equipment of exploitation, be mainly used in the preparation of mechanical pulp in paper industry and chemi-mechanical pulp.It utilize two parallel, occlusion and the screw element of homodromal screw rod and special construction, fibre stuff is made to be subject to dynamic extruding while conveying, interfibrous rubbing under dependence high density and high pressure, complete fibrous fracture and dissociation, to fiber primary wall (p layer) and secondary wall (S1 layer), there is fabulous execution, promote the physical property of pulping and raising paper.
The pulping process of common twin-screw extruder kneader makes fiber separation according to the rugosity effect produced during raw material axial compression, and the basis that energy ezpenditure is low produces the long and paper pulp that adhesion is good of fiber.This method is conventional installs three force combination districts in machine, carries out extruding rubbing defibrination.In the slurry drawn like this, fibre bundle (also claiming bundle fiber) is a lot, and deduction degree is lower, and what obtain is thick slurry, and needing follow-uply increases by one high-density paste mill operation again and just can obtain refining.But the equipment of high-density paste mill is complicated, and cost is high, power consumption is large, is unfavorable for energy-conservation, adds cost.
Summary of the invention
Circumferential bistrique of the present invention can greatly reduce the quantity of the bundle fiber in slurry, and little to the effect length of fiber, thus does not change the quality of slurry.Multiscrew extruding kneader (comprising twin-screw extruder kneader) of the present invention adopts described circumferential bistrique to replace traditional disc mill, when not increasing power disposition and equipment cost, the content of bundle fiber can be effectively reduced, decompose fiber rate more than 70%, thus no longer need the operation of follow-up high-density paste mill, save equipment cost and energy ezpenditure.
A kind of circumferential bistrique, comprises mandrel, lining tile, and to be fixed on described mandrel and that with mandrel rotate rotary bistrique coaxial with mandrel; Described rotary bistrique is disc-shaped structure; Described rotary bistrique arranges multiple dynamic roll flute in its disk side; Described lining tile be along the circumferential hoop of described rotary bistrique around described rotary bistrique periphery and its medial surface at least partially with the tubular structure radially relative at least partially of the disk side of rotary bistrique; Described lining tile side arranges multiple quiet roll flute within it, at a distance of certain radial clearance between described dynamic roll flute and its radial adjacent quiet roll flute.
Radial clearance between rotary bistrique disk side and the lining tile medial surface of its radially adjoining is identical; And/or the smallest radial gap between dynamic roll flute outer rim and the quiet roll flute outer rim of radially adjoining is 0.2mm to 0.5mm.
The fluting direction of dynamic roll flute becomes non-perpendicular spiral angle with the axis of mandrel; And/or the fluting direction of quiet roll flute becomes non-perpendicular spiral angle with the axis of mandrel; The fluting direction of dynamic roll flute or quiet roll flute refers to the fluting direction of the radial direction perpendicular to described dynamic roll flute or quiet roll flute; The fluting direction of dynamic roll flute or quiet roll flute and the axial spiral angle of core refer to the fluting direction projection of dynamic roll flute or quiet roll flute to mandrel axially and the angle formed between the axial direction of mandrel.
Fluting direction and the axial spiral angle of core of dynamic roll flute are 30 ° to 75 °; And/or the fluting direction of quiet roll flute and the axial spiral angle of core are 0 ° to 75 °.
The shape of the dynamic roll flute of same rotary bistrique and/or the quiet roll flute of same lining tile is identical, and/or the fluting direction of the dynamic roll flute of same rotary bistrique and/or the quiet roll flute of same lining tile, fluting shape, groove depth are identical; And/or the dynamic roll flute of same rotary bistrique is intervally arranged along its circumference by the disk side of some cycles in rotary bistrique; And/or the quiet roll flute of same lining tile is intervally arranged along its circumference by the medial surface of some cycles at lining tile; And/or dynamic roll flute and/or quiet roll flute are the gear teeth of roller gear or the gear teeth of bevel gear or loose helical teeth; And/or dynamic roll flute and/or quiet roll flute are plane or cambered surface at the flank of tooth of rotary bistrique circumference.
In the disk side of rotary bistrique along the thickness direction of its axis being arranged at least one deck moves roll flute; And/or at lining tile medial surface along the axial thickness direction of core being arranged at least quiet roll flute of one deck.
A kind of multiscrew extruding kneader, comprises motor, mandrel, at least one group of force combination district; Described mandrel is at least two above-mentioned mandrels, at least two described mandrels are parallel, be arranged side by side, and be connected with motor, at least one above-mentioned circumferential bistrique is connected after the force combination district of each described mandrel in the end section, rotary bistrique on different mandrel is parallel to each other, side by side, at a distance of certain radial clearance between the dynamic roll flute outer rim of the rotary bistrique on different mandrel, described motor makes it rotate in parallel with each other with moving mandrel's rotary bistrique separately by described mandrel respectively.
Smallest radial gap between the dynamic roll flute outer rim of described rotary bistrique and the dynamic roll flute outer rim of the rotary bistrique adjacent side by side of adjacent mandrel is identical with the described smallest radial gap between dynamic roll flute and quiet roll flute.
Described force combination district is formed by least one malleation combination region and at least one back-pressure combination region; Described malleation combination region is made up of the positive-pressure spiral cover be side by side arranged on each described mandrel, described back-pressure combination region is made up of the back-pressure screw casing be side by side arranged on each described mandrel, and the axial interocclusal clearance between the back-pressure screw casing that the positive-pressure spiral cover in same force combination district is adjacent is 0.5mm to 1mm.
A kind of twin-screw extruder kneader, described twin-screw extruder kneader is above-mentioned multiscrew extruding kneader.
A pulping process for mechanical pulp, dense water conservancy pulper during the slurry after fibre material enters above-mentioned multiscrew extruding kneader or twin-screw extruder kneader directly enters, completes making beating and screening process afterwards.
A pulping process for chemi-mechanical pulp, the slurry after fibre material enters above-mentioned multiscrew extruding kneader or twin-screw extruder kneader directly enters reaction warehouse, completes medium consistency refining afterwards, operation of screening and manufacture paper with pulp.
Technique effect of the present invention
A kind of circumferential bistrique of the present invention, adopt brand-new circumferential lapping mode, gap between the quiet roll flute that fiber is inwardly arranged by dynamic roll flute and the lining tile circumferencial direction of rotary bistrique circumferencial direction, when not affecting fibre length, the quantity of bundle fiber in slurry can be greatly reduced, efficient defibrating, thus deduction degree (improving deduction degree 3-8 degree in first paragraph slurrying) can be improved, do not change again the quality of slurry.
Radial clearance between the rotary bistrique disk side of the further scheme of the present invention and the lining tile medial surface of its radially adjoining is identical, and fibre material can be made like this by obtaining the material of equal uniformity during circumferential bistrique.The further scheme of the present invention provides the smallest radial gap of the quiet roll flute outer rim of preferred dynamic roll flute outer rim and radially adjoining, according to the slurry that can obtain different decomposition rate in smallest radial gap, smallest radial gap can be set according to different situations thus obtain the different slurry separating fine situation and different deduction degree.
The further scheme of the present invention can arrange spiral angle between the fluting direction of dynamic roll flute and the axial direction of mandrel according to factors such as the characteristics of mandrel rotating speed, fiber, when dynamic roll flute rotates around mandrel, while dynamic roll flute milled fiber material, described spiral angle can advance fibre material to pass through rotary bistrique, thus ensures stock discharge velocity.The further scheme of the present invention can arrange spiral angle between the fluting direction of quiet roll flute and the axial direction of mandrel according to factors such as the characteristics of mandrel rotating speed, fiber, is convenient to milled fiber material on the one hand, is convenient to passing through of slurry on the other hand.
The further scheme of the present invention provides the preferred value of the spiral angle between the fluting direction of dynamic roll flute and/or quiet roll flute and the axial direction of mandrel, is proven, and reduces slurry by resistance during circumferential bistrique, improves stock discharge velocity.
The further scheme of the present invention provides dynamic roll flute and/or the preferred arrangement of quiet roll flute respectively in rotary bistrique and/or lining tile, provides the preferred concrete mode of specific implementation circumference bistrique milled fiber material.
The further scheme of the present invention provides the layout number of plies of dynamic roll flute and/or the quiet roll flute arranged on rotary bistrique disk side and/or lining tile medial surface, individual layer is arranged and is convenient to improve stock discharge velocity, multilayer arranges the fineness being convenient to improve slurry, can arrange the number of plies of layout according to actual needs.
The invention provides a kind of multiscrew extruding kneader, adopt multiple mandrel and identical with mandrel quantity parallel, circumferential bistrique side by side, multiple rotary bistrique can be acted synergistically, both improve defibrination efficiency, reduce equipment investment and manufacturing cost, the requirement of other operation in realistic production again.
The further scheme of the present invention makes the smallest radial gap between the dynamic roll flute outer rim of described rotary bistrique and the dynamic roll flute outer rim of the rotary bistrique adjacent side by side of adjacent mandrel identical with the described smallest radial gap between dynamic roll flute and quiet roll flute, thus makes by the slurry of circumferential bistrique more even.
The further scheme of the present invention provides the preferred value of the axial interocclusal clearance between back-pressure screw casing that the positive-pressure spiral cover in force combination district is adjacent, slurry being ground fully before entering circumferential bistrique, being conducive to by obtaining uniform refining after circumferential bistrique.
Application claims protects a kind of twin-screw extruder kneader, belongs to above-mentioned multiscrew extruding kneader, and all technique effects of therefore above-mentioned multiscrew extruding kneader are similarly applicable to this twin-screw extruder kneader.
The pulping process of a kind of mechanical pulp of the present invention, owing to have employed multiscrew extruding kneader (comprising above-mentioned twin-screw extruder kneader) with above-mentioned circumferential bistrique, after the grinding steps through circumferential bistrique, through pulping, after screening, the slurry of 70% can directly carry out joining copy paper, all the other 30% thicker slurries only need the degree reuse that can be reached refining by middle-density refiner or low dense fiberizer, relative to traditional handicraft, eliminate part even all through the operation of high-density paste mill, reduce equipment cost, and the energy consumed reduces greatly.
The pulping process of chemi-mechanical pulp of the present invention, owing to have employed multiscrew extruding kneader (comprising above-mentioned twin-screw extruder kneader) with above-mentioned circumferential bistrique, after the grinding steps through circumferential bistrique, through pulping, after screening, the slurry of 70% can directly carry out joining copy paper, all the other 30% thicker slurries only need the degree reuse that can be reached refining by middle-density refiner or low dense fiberizer, relative to traditional handicraft, eliminate part even all through the operation of high-density paste mill, reduce equipment cost, and the energy consumed reduces greatly.
Accompanying drawing explanation
Fig. 1 a is the front view of a detailed description of the invention of the present invention's circumference bistrique.
Fig. 1 b is the partial enlarged drawing in gap between the rotary bistrique of Fig. 1 a and lining tile.
Fig. 1 c is the side view of the part rotary bistrique of the present invention's detailed description of the invention.
Fig. 1 d be the part lining tile of the present invention's detailed description of the invention side view.
Fig. 2 a is the front view of a detailed description of the invention of the present invention's circumference bistrique.
Fig. 2 b is the top view of the circumferential bistrique of Fig. 2 a.
Fig. 3 a is the top view of the twin-screw extruder kneader of a specific embodiment of the present invention.
Fig. 3 b is the top view of many (three) screw extruding kneader of a specific embodiment of the present invention.
Fig. 3 c is the right view of many (three) screw extruding kneader of a specific embodiment of the present invention.
Fig. 4 a be mechanical pulp of the present invention with the flow chart of the wood chip class detailed description of the invention that is raw material.
Fig. 4 b be mechanical pulp of the present invention with the flow chart of the careless class detailed description of the invention that is raw material.
Fig. 5 a be chemi-mechanical pulp of the present invention with the flow chart of the wood chip class detailed description of the invention that is raw material.
Fig. 5 b be chemi-mechanical pulp of the present invention with the flow chart of the careless class detailed description of the invention that is raw material.
Fig. 6 a be bleached chemi-mechanical pulp of the present invention with the flow chart of the wood chip class detailed description of the invention that is raw material.
Fig. 6 b be bleached chemi-mechanical pulp of the present invention with the flow chart of the careless class detailed description of the invention that is raw material.
Reference numeral is as follows:
The upper machine barrel of 1-, 2-press strip, 3-single ended bolt, 4-lining tile, 5-rotary bistrique, 6-mandrel, 7-square head bolt, machine barrel under 9-, the quiet roll flute of 41-, 51-moves roll flute, d-moves the radial clearance between roll flute and quiet roll flute, the radial clearance between d '-dynamic roll flute, the axis of x-mandrel, c-moves the fluting direction of roll flute, the fluting direction of c '-quiet roll flute, and a-moves the spiral angle between the fluting direction of roll flute and the axial direction of mandrel, E-right-handed screw cover, F-backpitch cover, G-circumference bistrique.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 a to Fig. 1 d is a detailed description of the invention of the present invention's circumference bistrique.A kind of circumferential bistrique, as shown in Figure 1a, comprises mandrel 6, lining tile 4, machine barrel (can comprise machine barrel 1 and lower machine barrel 9 as shown in the figure), and to be fixed on described mandrel 6 and that with mandrel 6 rotate rotary bistrique 5 coaxial with mandrel 6.Therefore the axial x of mandrel 6 is also the axial x of rotary bistrique 5.Described lining tile 4 is fixed on machine barrel.Lining tile 4 and machine barrel can be Split type structures, and being convenient to change it when lining tile damages, can certainly be integrative-structure.As a detailed description of the invention, in Fig. 2 a, show the concrete mode by press strip 2, single ended bolt 3 and square head bolt 7, lining tile 4 being fixed on upper machine barrel 1 and lower machine barrel 9.Can certainly otherwise, such as welding or riveted joint etc., be fixed on lining tile 4 on machine barrel.Described machine barrel can be being combined by upper machine barrel 1 and lower machine barrel 9 as shown in Figure 1a, is convenient to processing and installs, and can certainly be the machine barrel having machine barrel more than two incorporating aspects or one.Described rotary bistrique 5 is disc-shaped structure, as shown in Figure 1a.Described rotary bistrique 5 arranges multiple dynamic roll flute 51 in its disk side; Described lining tile 4 be along the circumferential hoop of described rotary bistrique 5 around described rotary bistrique 5 periphery and its medial surface at least partially with the tubular structure radially relative at least partially of the disk side of rotary bistrique 5; Described lining tile 4 side arranges multiple quiet roll flute 41 within it, at a distance of certain radial clearance d between described dynamic roll flute 51 and its radial adjacent quiet roll flute 41, as shown in Figure 1 b.It should be noted that, in Fig. 1 a, Fig. 2 a and Fig. 3 c, the enlarged drawing not showing that to set out roll flute 51 and quiet roll flute 41, Fig. 1 b be Fig. 1 a at one section of rotary bistrique 5 and position, lining tile 4 gap.
Circumferential bistrique of the present invention, adopt brand-new circumferential lapping mode, gap between the quiet roll flute 41 that fiber is inwardly arranged by dynamic roll flute 51 and lining tile 4 circumferencial direction of rotary bistrique 5 circumferencial direction, when not affecting fibre length, the quantity of bundle fiber in slurry can be greatly reduced, efficient defibrating thus can improve deduction degree (improving deduction degree 3-8 degree in first stage slurrying), does not change again the quality of slurry.
Preferably, the radial clearance d between rotary bistrique 5 disk side and lining tile 4 medial surface of its radially adjoining is all identical, as the situation of Fig. 1 a, fibre material can be made like this by obtaining the material of equal uniformity during circumferential bistrique.
Preferably, the smallest radial gap d between quiet roll flute 41 outer rim of described dynamic roll flute 51 outer rim and radially adjoining is 0.2mm to 0.5mm.If smallest radial gap d is 0.2mm, decomposition fiber rate is high, if smallest radial gap d is 0.5mm, decomposition fiber rate is low.Smallest radial gap d can be set according to different situations thus obtain different defibrating states and the slurry of different deduction degree.
The dynamic roll flute 51 of rotary bistrique 5 can be regarded as the groove formation of radially inscribing certain depth in disk side, the quiet roll flute 41 of lining tile 4 can be regarded as radially to inscribe at the medial surface of lining tile 4 that the groove of certain depth formed, and therefore can represent respectively with fluting direction c and c ' and move roll flute 51 and the distribution of quiet roll flute 41 respectively on the disk side of rotary bistrique 5 and the medial surface of lining tile 4.In the present invention, fluting direction c or c ' of dynamic roll flute 51 or quiet roll flute 41 refers to the fluting direction of the radial direction perpendicular to described dynamic roll flute or quiet roll flute, instead of refers to along groove depth direction.The radial direction of rotary bistrique 5 is the tooth depth direction of roll flute 51.In the present invention, the fluting direction of dynamic roll flute or quiet roll flute and the axial spiral angle of core refer to the fluting direction projection of dynamic roll flute or quiet roll flute to mandrel axially and the angle formed between the axial direction of mandrel, as shown in Figure 1 b for moving the spiral angle a between the fluting direction c of roll flute and the axial x of mandrel.Within gap between described rotary bistrique 5 and described lining tile 4, as shown in fig. 1b and fig. lc, the fluting direction c of dynamic roll flute 51 becomes non-perpendicular spiral angle a with the axial x of mandrel; The fluting direction of quiet roll flute becomes non-perpendicular spiral angle with the axis of mandrel.The fluting direction c ' of quiet roll flute 41 and the fluting direction c of dynamic roll flute 51 can without corresponding relations.
Preferably, the spiral angle a of the dynamic fluting direction c of the roll flute 51 and axial x of mandrel is 30 ° to 75 °, so that promote that when rotary bistrique 5 rotates with mandrel 6 material is fed forward.This spiral angle can according to the speed setting of mandrel 6.Preferably, the fluting direction c ' of quiet roll flute 41 is 0 ° to 75 ° with the spiral angle of the axial x of mandrel 6, preferred, because lining tile 4 is fixing, quiet roll flute 41 is also fixing, so the fluting direction c ' of quiet roll flute 41 is preferably 0 ° with the spiral angle of the axis of mandrel 6, namely this spiral angle is parallel with the axial x of mandrel 6, as shown in Figure 1 d, material is more convenient for like this by circumferential bistrique.Certainly, the driving for the material in circumferential bistrique also can apply alternate manner, such as compression cylinder etc., and the fluting direction c ' of quiet like this roll flute 41 also can be other angle with the spiral angle of the axis of mandrel 6.Certainly these two spiral angles also can set its corresponding relation according to factors such as rotating speeds.
It should be noted that, in the case of figure 1 a, lining tile 4 is cylindrical shapes, therefore also can be rotate around the axial x of mandrel, its direction of rotation can be identical with the direction of rotation of rotary bistrique 5, but friction speed, can also be different from the direction of rotation of rotary bistrique 5, thus reach better abrasive material effect.Now, the fluting direction c ' of quiet roll flute 41 can set according to factors such as rotating speeds with the spiral angle of the axis of mandrel 6.
Preferably, the shape of the dynamic roll flute 51 of same rotary bistrique 5 and/or the quiet roll flute 41 of same lining tile 4 can be identical; Can certainly be different.Fluting direction c and/or c ' of the dynamic roll flute 51 of same rotary bistrique 5 and/or the quiet roll flute 41 of same lining tile 4, fluting shape, groove depth can be identical; Can certainly be different.The dynamic roll flute 51 of same rotary bistrique 5 can be intervally arranged along its circumference by the disk side of some cycles in rotary bistrique 5; The quiet roll flute 41 of same lining tile 4 can be intervally arranged along its circumference by the medial surface of some cycles at lining tile 4; Dynamic roll flute 51 and/or quiet roll flute 41 can be the gear teeth of roller gear or the gear teeth of bevel gear or loose helical teeth etc., can certainly be other gears of the prior art; Dynamic roll flute 51 and/or quiet roll flute 41 are plane or cambered surface at the flank of tooth of rotary bistrique 5 circumference.
Multiple fluting direction c of rotary bistrique 5, preferably, are of similar shape, size; Can certainly be different.Multiple fluting direction c ' of lining tile 4 preferably, to be of similar shape, size; Can certainly be different.The size of the multiple dynamic roll flute 51 namely in same rotary bistrique 5 is normally identical with spiral angle; The size of the multiple quiet roll flute 41 on same lining tile 4 is normally identical with spiral angle.
In the disk side of rotary bistrique 5 along the thickness direction of its axial x being arranged at least one deck moves roll flute 51.The thickness direction of lining tile 4 medial surface along the axial x of mandrel is arranged at least quiet roll flute 41 of one deck.The individual layer of dynamic roll flute 51 and/or quiet roll flute 41 is arranged and is convenient to improve stock discharge velocity, and the multilayer of dynamic roll flute 51 and/or quiet roll flute 41 arranges the fineness being convenient to improve slurry.The number of plies of layout can be set according to actual needs
As a detailed description of the invention, described mandrel 6 can be at least two parallel, mandrels side by side, and each described mandrel 6 connects a described rotary bistrique 5, the rotary bistrique 5 on multiple different mandrel 6 can parallel, be arranged side by side, as shown in figures 2 a and 2b.Smallest radial gap d between dynamic roll flute 51 outer rim of rotary bistrique 5 and dynamic roll flute 51 outer rim of adjacent rotary bistrique 5 adjacent side by side ' (as shown in Figure 2 b), preferably, can be identical with the described smallest radial gap d between dynamic roll flute 51 and quiet roll flute 41, multiple rotary bistrique 5 can be made to act synergistically, both improve defibrination efficiency, reduce equipment investment and manufacturing cost, the requirement of other operation in realistic production again.Fig. 3 c is that circumferential bistrique has three parallel, to be arranged side by side schematic diagrames of rotary bistrique 5.Certainly, the quantity of the rotary bistrique 5 of circumferential bistrique can also be more, such as four.
A kind of multiscrew extruding kneader, as shown in Fig. 2 a, 2b and Fig. 3 a to 3c, comprises motor, mandrel 6, at least one group of force combination district.Described force combination district is formed by least one malleation combination region E and at least one back-pressure combination region F, as shown in Figure 3 a.Described malleation combination region E is made up of the positive-pressure spiral cover be side by side arranged on each described mandrel 6, described back-pressure combination region F is made up of the back-pressure screw casing be side by side arranged on each described mandrel 6, form higher-pressure region between the malleation combination region E in a force combination district and back-pressure combination region F, fibre material is squeezed power and shearing force and refinement.Described mandrel 6 is at least two above-mentioned mandrels 6, and at least two described mandrels 6 are parallel, be arranged side by side, and is connected with motor, and can be connected with same motor, also can be connected by two motors respectively.If Fig. 3 a is two mandrels 6 i.e. situation of twin-screw extruder kneader, if Fig. 3 b is three mandrels, i.e. the situation of three screw extruding kneaders.Certainly can also be the situation of more mandrel, four screw extruding kneaders of such as four mandrels 6.At least one above-mentioned circumferential bistrique is connected after the force combination district (as shown in Figure 3 a, being then the 4th force combination district) of each described mandrel 6 in the end section.Rotary bistrique 5 on different mandrel 6 is parallel to each other, side by side, at a distance of certain radial clearance d ' between dynamic roll flute 51 outer rim of the rotary bistrique 5 on different mandrel 6, as shown in Figure 2 b.And, often kind of multiscrew extruding kneader all can with the above-mentioned circumferential bistrique of more than a group, namely multiple circumferential bistrique group G (each mandrel 6 is with a circumferential bistrique, and circumferential bistrique on all mandrels being parallel, being arranged side by side is called a circumferential bistrique group) is connected on mandrel 6.Preferably, axial interocclusal clearance between the back-pressure screw casing that positive-pressure spiral cover in same force combination district is adjacent is 0.5mm to 1mm, slurry being ground fully before entering circumferential bistrique, being conducive to by obtaining uniform refining after circumferential bistrique.
Described motor is with moving mandrel's rotary bistrique 5 separately to make it rotate in parallel with each other by described mandrel 6 respectively.Preferably, mandrel 6 described in described driven by motor be with moving mandrel's rotary bistrique 5 separately to make respectively it is parallel to each other, rotate in the same way, synchronously, uniform slurry can be obtained.Certainly, also can Electric Machine Control mandrel 6, such motor can be more flexible to the control of mandrel 6, such as both can control all mandrels 6 parallel to each other, rotate in the same way, synchronously, also can control mandrel 6 parallel to each other, but (such as reverse between two) rotate not in the same way, can also control mandrel 6 parallel to each other but asynchronous (such as, when the diameter of the circumferential bistrique that mandrel connects is not identical, the rotating speed of mandrel can be made different) rotate.
Preferably, drive other parts (such as screw casing comprises positive-pressure spiral cover and/or back-pressure screw casing) when rotating at described mandrel 6, mandrel 6 can rotating Vortex as required.Certainly, mandrel 6 also can reversely rotate each other.
Preferably, the smallest radial gap d between dynamic roll flute 51 outer rim of rotary bistrique 5 and dynamic roll flute 51 outer rim of the rotary bistrique 5 adjacent side by side of adjacent mandrel 6 ' identical with described smallest radial gap d between dynamic roll flute 51 and quiet roll flute 41.Radial clearance d and d ' is everywhere all identical, can ensure by the slurry of circumferential bistrique more even.
As shown in Figure 3 a, in order to not change existing technique, existing mandrel 6 and existing force combination district, and by the one end after circumferential bistrique G installation mandrel 6 in the end section force combination district, the thickness of described rotary bistrique 5 can be less than the malleation combination region E in described force combination district and/or a pitch helical pitch of back-pressure combination region F.When the circumferential bistrique G in installation the 4th force combination district, can according to the malleation combination region in length adjustment the 3rd force combination district of the thickness of circumferential bistrique G axis and mandrel 6 and/or the length of back-pressure combination region.Also in the 4th force combination district, only malleation combination region E can be installed, afterwards uneasy anti-loaded pressure combination region F but the direct circumferential bistrique G of installation, to coordinate the length of mandrel 6.
Multiscrew extruding kneader of the present invention, especially, when the quantity of mandrel 6 is two, is conventional twin-screw extruder kneader, and the technique effect of above-mentioned circumferential bistrique and multiscrew extruding kneader is similarly applicable to twin-screw extruder kneader.
Multiscrew of the present invention extruding kneader (comprising twin-screw extruder kneader) adopts described circumferential bistrique to replace traditional disc mill, design and installation the 4th force combination district in machine, and the refining function that have selected high dense mill carries out defibrination.Facts have proved that the method is not when increasing power disposition and equipment cost, can effectively reduce the content of bundle fiber, decomposing fiber rate more than 70%, in first paragraph slurrying, improving deduction degree 3-8 degree.Thus no longer need the operation of follow-up high-density paste mill, save equipment cost and energy ezpenditure.
The pulping process (pulping process) adopting above-mentioned multiscrew to extrude kneader (comprising twin-screw extruder kneader) also changes thereupon.As the specific embodiment of the present invention, the invention provides the pulping process of pulping process that twin-screw extruder kneader is the mechanical pulp of example and chemi-mechanical pulp and bleached chemi-mechanical pulp, be summarized as follows.
The pulping process of a kind of mechanical pulp of the present invention, dense water conservancy pulper during slurry after fibre material enters above-mentioned twin-screw extruder kneader (also can be other multiscrew extruding kneader) directly enters, complete making beating afterwards, screening and operation of manufacturing paper with pulp, as shown in Fig. 4 a, Fig. 4 b.After the grinding steps of circumferential bistrique, after pulping screening, the slurry of 70% directly can carry out follow-up making beating, screening and operation of manufacturing paper with pulp, all the other 30% thicker slurries only need the degree reuse that can be reached refining by middle-density refiner or low dense fiberizer, relative to traditional handicraft, eliminate the operation through high-density paste mill, and the energy consumed reduces greatly.
Be used for as shown in Figure 4 a joining copying boxboard, the pulping process of the mechanical pulp of fluting medium etc.After above-mentioned twin-screw extruder kneader (also can be other multiscrew extruding kneader), dense water conservancy pulper and middle-density refiner in only need entering, more directly join copy paper through screening process
The pulping process of a kind of chemi-mechanical pulp of the present invention, slurry after fibre material enters above-mentioned twin-screw extruder kneader (also can be above-mentioned multiscrew extruding kneader) directly enters reaction warehouse, complete medium consistency refining afterwards, screening and operation of manufacturing paper with pulp, as shown in Fig. 5 a, 5b.After the grinding steps of circumferential bistrique, after pulping and screening process, the slurry of 70% directly can carry out follow-up making beating and screening process, all the other 30% thicker slurries only need the degree reuse that can be reached refining by middle-density refiner or low dense fiberizer, relative to traditional handicraft, eliminate the operation through high-density paste mill, and the energy consumed reduces greatly.
As detailed description of the invention, bleached chemi-mechanical pulp technological process is as shown in Fig. 6 a, 6b.Slurry after fibre material enters above-mentioned twin-screw extruder kneader (also can be above-mentioned multiscrew extruding kneader) directly enters reaction warehouse, through pulping operation, after screening technology, the slurry of 70% directly can join copy paper, all the other 30% slurries only need by reuse after dense mill or low dense defibrination.
Claims (11)
1. a circumferential bistrique, is characterized in that, comprises mandrel, lining tile, and to be fixed on described mandrel and the rotary bistrique that with mandrel rotate coaxial with mandrel and described rotary bistrique is connected to one end of described mandrel; Described rotary bistrique is disc-shaped structure; Described rotary bistrique arranges multiple dynamic roll flute in its disk side; Described lining tile be along the circumferential hoop of described rotary bistrique around described rotary bistrique periphery and its medial surface at least partially with the tubular structure radially relative at least partially of the disk side of rotary bistrique; Described lining tile side arranges multiple quiet roll flute within it, at a distance of certain radial clearance between described dynamic roll flute and its radial adjacent quiet roll flute; The fluting direction of described dynamic roll flute becomes non-perpendicular spiral angle with the axis of mandrel; And/or the fluting direction of quiet roll flute becomes non-perpendicular spiral angle with the axis of mandrel; The fluting direction of dynamic roll flute or quiet roll flute refers to the fluting direction of the radial direction perpendicular to described dynamic roll flute or quiet roll flute; The fluting direction of dynamic roll flute or quiet roll flute and the axial spiral angle of core refer to the fluting direction projection of dynamic roll flute or quiet roll flute to mandrel axially and the angle formed between the axial direction of mandrel.
2. circumferential bistrique according to claim 1, is characterized in that, the radial clearance between rotary bistrique disk side and the lining tile medial surface of its radially adjoining is identical; And/or the smallest radial gap between dynamic roll flute outer rim and the quiet roll flute outer rim of radially adjoining is 0.2mm to 0.5mm.
3. circumferential bistrique according to claim 1, is characterized in that, fluting direction and the axial spiral angle of core of dynamic roll flute are 30 ° to 75 °; And/or the fluting direction of quiet roll flute and the axial spiral angle of core are 0 ° to 75 °.
4. circumferential bistrique according to claim 3, it is characterized in that, the shape of the dynamic roll flute of same rotary bistrique and/or the quiet roll flute of same lining tile is identical, and/or the fluting direction of the dynamic roll flute of same rotary bistrique and/or the quiet roll flute of same lining tile, fluting shape, groove depth are identical; And/or the dynamic roll flute of same rotary bistrique is intervally arranged along its circumference by the disk side of some cycles in rotary bistrique; And/or the quiet roll flute of same lining tile is intervally arranged along its circumference by the medial surface of some cycles at lining tile; And/or dynamic roll flute and/or quiet roll flute are the gear teeth of roller gear or the gear teeth of bevel gear or loose helical teeth; And/or dynamic roll flute and/or quiet roll flute are plane or cambered surface at the flank of tooth of rotary bistrique circumference.
5. according to the circumferential bistrique one of Claims 1-4 Suo Shu, it is characterized in that, in the disk side of rotary bistrique along the thickness direction of its axis being arranged at least one deck moves roll flute; And/or at lining tile medial surface along the axial thickness direction of core being arranged at least quiet roll flute of one deck.
6. a multiscrew extruding kneader, is characterized in that, comprise motor, mandrel, at least one group of force combination district; Described mandrel is the mandrel described in one of at least two claims 1 to 5, at least two described mandrels are parallel, be arranged side by side, and be connected with motor, the circumferential bistrique that one of at least one claim 1 to 5 is described is connected after the force combination district of each described mandrel in the end section, rotary bistrique on different mandrel is parallel to each other, side by side, at a distance of certain radial clearance between the dynamic roll flute outer rim of the rotary bistrique on different mandrel, described motor makes it rotate in parallel with each other with moving mandrel's rotary bistrique separately by described mandrel respectively.
7. multiscrew extruding kneader according to claim 6, it is characterized in that, the smallest radial gap between the dynamic roll flute outer rim of described rotary bistrique and the dynamic roll flute outer rim of the rotary bistrique adjacent side by side of adjacent mandrel is identical with the described smallest radial gap between dynamic roll flute and quiet roll flute.
8. the multiscrew extruding kneader according to claim 6 or 7, is characterized in that, described force combination district is formed by least one malleation combination region and at least one back-pressure combination region; Described malleation combination region is made up of the positive-pressure spiral cover be side by side arranged on each described mandrel, described back-pressure combination region is made up of the back-pressure screw casing be side by side arranged on each described mandrel, and the axial interocclusal clearance between the back-pressure screw casing that the positive-pressure spiral cover in same force combination district is adjacent is 0.5mm to 1mm.
9. a twin-screw extruder kneader, is characterized in that, described twin-screw extruder kneader is the multiscrew extruding kneader described in one of claim 6 to 8.
10. the pulping process of a mechanical pulp, it is characterized in that, dense water conservancy pulper during slurry after fibre material enters the multiscrew extruding kneader of one of claim 6 to 8 or the twin-screw extruder kneader of claim 9 directly enters, completes making beating and screening process afterwards.
The pulping process of 11. 1 kinds of chemi-mechanical pulps, it is characterized in that, slurry after fibre material enters the multiscrew extruding kneader of one of claim 6 to 8 or the twin-screw extruder kneader of claim 9 directly enters reaction warehouse, completes medium consistency refining afterwards, operation of screening and manufacture paper with pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105793.4A CN103306155B (en) | 2012-03-09 | 2012-04-12 | Circumference bistrique and multiscrew extruding kneader, pulping process |
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| CN201210062134 | 2012-03-09 | ||
| CN201210062134.7 | 2012-03-09 | ||
| CN2012100621347 | 2012-03-09 | ||
| CN201210105793.4A CN103306155B (en) | 2012-03-09 | 2012-04-12 | Circumference bistrique and multiscrew extruding kneader, pulping process |
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| CN103306155A CN103306155A (en) | 2013-09-18 |
| CN103306155B true CN103306155B (en) | 2016-04-13 |
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| CN2012201531057U Expired - Lifetime CN202559176U (en) | 2012-03-09 | 2012-04-12 | Circumferential grinding head and multi-screw extrusion kneading machine |
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| CN2012201531057U Expired - Lifetime CN202559176U (en) | 2012-03-09 | 2012-04-12 | Circumferential grinding head and multi-screw extrusion kneading machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306155B (en) * | 2012-03-09 | 2016-04-13 | 张宇 | Circumference bistrique and multiscrew extruding kneader, pulping process |
| CN107541977A (en) * | 2017-09-30 | 2018-01-05 | 河北天正筛选制浆设备有限公司 | A kind of multiscrew high concentration displacement washing defibrination discongests device and slurry washing system |
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|---|---|---|---|---|
| US4393983A (en) * | 1978-04-28 | 1983-07-19 | Eriksson Erik F | Intermeshing screw-type refiner |
| CN1648332A (en) * | 2004-01-28 | 2005-08-03 | 邱圣渊 | Paper-making method by pulping |
| CN1673451A (en) * | 2004-03-24 | 2005-09-28 | 天津科技大学 | Double-screw fiberizer with tooth-shape disc |
| US7396435B2 (en) * | 2003-09-29 | 2008-07-08 | Weyerhaeuser Co. | Method for conveying, mixing, and leveling dewatered pulp prior to drying |
| CN201221039Y (en) * | 2008-05-01 | 2009-04-15 | 李志� | Paper-making pulping apparatus |
| CN202047313U (en) * | 2011-03-09 | 2011-11-23 | 上海尚鼎机械科技有限公司 | Cylindrical pulping machine |
| CN202559176U (en) * | 2012-03-09 | 2012-11-28 | 张宇 | Circumferential grinding head and multi-screw extrusion kneading machine |
-
2012
- 2012-04-12 CN CN201210105793.4A patent/CN103306155B/en active Active
- 2012-04-12 CN CN2012201531057U patent/CN202559176U/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393983A (en) * | 1978-04-28 | 1983-07-19 | Eriksson Erik F | Intermeshing screw-type refiner |
| US7396435B2 (en) * | 2003-09-29 | 2008-07-08 | Weyerhaeuser Co. | Method for conveying, mixing, and leveling dewatered pulp prior to drying |
| CN1648332A (en) * | 2004-01-28 | 2005-08-03 | 邱圣渊 | Paper-making method by pulping |
| CN1673451A (en) * | 2004-03-24 | 2005-09-28 | 天津科技大学 | Double-screw fiberizer with tooth-shape disc |
| CN201221039Y (en) * | 2008-05-01 | 2009-04-15 | 李志� | Paper-making pulping apparatus |
| CN202047313U (en) * | 2011-03-09 | 2011-11-23 | 上海尚鼎机械科技有限公司 | Cylindrical pulping machine |
| CN202559176U (en) * | 2012-03-09 | 2012-11-28 | 张宇 | Circumferential grinding head and multi-screw extrusion kneading machine |
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| CN103306155A (en) | 2013-09-18 |
| CN202559176U (en) | 2012-11-28 |
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