CN102828432B - Batch refiner and refining process thereof - Google Patents
Batch refiner and refining process thereof Download PDFInfo
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- CN102828432B CN102828432B CN201210285953.8A CN201210285953A CN102828432B CN 102828432 B CN102828432 B CN 102828432B CN 201210285953 A CN201210285953 A CN 201210285953A CN 102828432 B CN102828432 B CN 102828432B
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Abstract
The invention provides a batch refiner which comprises a shell, a moving refining plate, a fixed refining plate, a transmission shaft and a gap adjusting mechanism, wherein the moving refining plate and the fixed refining plate are coaxially arranged, and the transmission shaft is coaxially connected with the moving refining plate. The batch refiner is further provided with a fluid pushing device, a fluid inlet channel is arranged on the moving refining plate or the fixed refining plate and penetrates through two bottom surfaces of the moving refining plate or the fixed refining plate, a discharge end face of the fluid pushing device faces the fluid inlet channel, and communicated backflow gaps are reserved between the fluid pushing device and the shell as well as between each refining plate and the shell respectively. Multiple refining can be achieved by circulating pulp between the refining plates when the batch refiner is operated, and times of refining are not limited by the batch refiner; and gaps between the refining plates can be adjusted by the gap adjusting mechanism so as to adapt to changes of the pulp. The batch refiner is simple and flexible in operation.
Description
Technical field
The invention belongs to paper-making pulping field, be specifically related to a kind of batch (-type) fiberizer and refining process thereof.
Background technology
In paper industry, the paper pulp from pulping process can not be directly used in papermaking, but first will through making beating, reason is that paper pulp fiber is now stiffening and flexible, also containing a large amount of unsegregated fibre bundle, these fibre bundle hardness are large, and have oversize, what have is too thick, lack necessary prescinding and be separated, as used its papermaking, then loose, the porous of the product of gained, rough surface and hardness is very low, can not meet instructions for use.Hydrabeating utilizes the paper pulp fiber in mechanical device process water, fiber extruded uniformly, rubs, cut off, the mechanism such as combing, fiber is cut off, the various metamorphosis such as sub-wire, brooming, swollen, thus the paper making it produce can reach the operating process of prospective quality.In pulping process, fiber is except being subject to physical action, the phenomenons such as the cell membrane of fiber also can be subjected to displacement, deformation and failure, and then cause fiber that water suction swollen occurs, produce fibrillating, make the paper obtained have flexibility and plasticity, simultaneously by making beating, add the chance of hydroxyl in cellulose molecular chain and hydrogen chain combination, improve interfibrous adhesion.
Machinery for pulling an oar in prior art can be divided into batch (-type) beater and the large class of continous mode beater two, wherein batch (-type) beater refers to all kinds of trough-style pulp beater, the structure of conventional trough-style pulp beater is: be provided with sandwich wall in the centre of an oval cell body, described cell body is separated into two regions by described sandwich wall, pivotal rotor is provided with in wider region, the outer surface of described rotor is provided with fly cutter, fly cutter and described cutter rod are coaxially arranged, also bed plate is fixedly installed in described beater, described bed plate and described fly cutter be arranged in parallel, this beater operationally, rotor rotates along axis, because fly cutter has certain projection relative to cutter rod, thus make paper pulp under the promotion of fly cutter at groove internal circulation flow, and produce cut-out by the cooperation between fly cutter and bed plate, division, conquassation, the effects such as swollen, thus make the slurry meeting papermaking requirement.Slot type waterpower beater is a kind of beating equipment of slurrying field early application, it is comparatively strong to the adaptability of pulp varieties, but the making beating efficiency of slot type waterpower beater is very low, and energy consumption is larger, therefore be substantially eliminated at present, only use in some small-sized paper mills.
In order to improve making beating efficiency, continous mode beater has been there is again after trough-style pulp beater, described continous mode beater comprises millstone pulping machine and bevel-type fiberizer, wherein about abrasive disk type beater, Chinese patent literature CN201132123Y discloses a kind of millstone pulping machine, comprise motor, defibrination room, the feed space be communicated with defibrination room, material is transported to the feeding screw of defibrination indoor from feed space, be positioned at the dynamic abrasive disc that defibrination indoor are arranged on the quiet abrasive disc on casing and match with quiet abrasive disc, defibrination room is positioned at the cavity formed by casing and cover, the wall of described cavity is provided with plasma discharge mouth.This device is also provided with the governor motion for regulating between quiet abrasive disc and dynamic abrasive disc, described governor motion by the adjusting screw(rod) be arranged on by screw thread pair on cover, be arranged on the regulating block on support casing and the steel ball between adjusting screw(rod) and regulating block is formed, steel ball axially acts on adjusting screw(rod) and regulating block respectively.During this device busy, after utilizing governor motion to be adjusted in the gap between dynamic grinding block and static grinding block, be locked can be carried out defibrination by locking nut.Except above-mentioned governor motion, Chinese patent literature CN101122102A also discloses the device that a kind of grinding clearance to disc type paste mill carries out on-line measurement and control, this device enters dish except mill when starting for mill beater or run, moves back except the operation of dish, also can be used for grinding dish gap online thus making up the wearing and tearing occurred in running.Millstone pulping machine enters slurry, continuously pulp continuously when operating, and has excellent making beating efficiency.
Above-mentioned abrasive disk type beater is Dan Mo district formula beater, because the time of staying of slurry in grinding tool is shorter, only has a few second, thus just cause the refining pulp quality of beater not high, the requirement of papermaking is not still reached from the beating degree of above-mentioned beater paper pulp out, also containing a large amount of untreated fiber and fibre bundle in pulp, thus have impact on the quality of papermaking product.Therefore, in order to improve the refining pulp quality of slurrying, normally arrange the series connection of multiple stage beater in prior art use or arrange multiple mill district in a beater, as Chinese patent literature CN2892938Y in prior art discloses a kind of double-arc spline fiberizer being provided with multiple mill district, the casing inner wall that the side of the rotary grinding disk of this double-arc spline fiberizer is corresponding is shaped with and moves with the side of rotary grinding disk the bulge loop coordinated, thus in casing, form Liang Gemo district, casing residing for Liang Mo district, left and right adds respectively the grout outlet and stock inlet that are shaped with series connection Liang Mo district, slurry successively improves the beating degree of paper pulp by Liang Gemo district.
Above-mentioned beater is by arranging multiple mill district thus improve the beating degree of paper pulp to a certain extent, but, the defect that beating equipment of the prior art still exists is: no matter arrange the series connection of multiple stage beater or arrange multiple mill district in a beater, all there is the problem that equipment is lengthy and jumbled, especially when using above-mentioned beater to break wood pulp, owing to containing a large amount of wood chips and fibre bundle in wood pulp, therefore when breaking wood pulp, in order to ensure that initial wood pulp can pass through grinding tool, it is larger that the primary clearance of grinding tool is arranged usually, in this case, in order to ensure the refining pulp quality of wood pulp, very many beaters just must be set or very Duo Mo district is set in a beater, and the gap arranging each mill district that paper pulp passes through reduces successively, this just causes equipment too lengthy and jumbled.And in actual beating process, once enter slurry to there occurs change, just need again to increase or reduce mill district, and above-mentioned beater is once setting completed, adjusting again with regard to being difficult to, therefore above-mentioned beater underaction, being difficult to the change adapting to enter slurry in actual process.
Summary of the invention
In order to solve beater of the prior art to improve the beating degree of paper pulp, in the problem that when arranging the series connection of multiple stage beater or arrange multiple mill district in a beater, the equipment that exists is lengthy and jumbled and prior art, beater is once setting completed, just be difficult to increase or reduce mill district again, be difficult to the problem adapting to enter slurry change in actual process.The invention provides that a kind of equipment is simple, the batch (-type) fiberizer of flexible operation, the invention also discloses the refining process using described batch (-type) fiberizer.
The technical scheme of batch (-type) fiberizer of the present invention is:
A kind of batch (-type) fiberizer, comprising:
Housing, is provided with stock inlet and the grout outlet that can control break-make on the housing;
Mill, comprise movable grinding disc and the fixed millstone of coaxial setting, described movable grinding disc and fixed millstone are arranged in described housing, are provided with grinding clearance between described movable grinding disc and fixed millstone;
Power transmission shaft, is coaxially connected with described movable grinding disc, drives described movable grinding disc to do synchronous rotary;
Clearance adjustment mechanism, for adjusting the gap between described movable grinding disc and fixed millstone;
Also be provided with:
Plug flow device, be arranged in described housing, described fixed millstone or described movable grinding disc are provided with feed pathway, and two bottom surfaces that described feed pathway runs through described fixed millstone or described movable grinding disc are arranged, and the discharge end of described plug flow device is arranged towards described feed pathway;
Between described plug flow device and described housing and be provided with the backflow gap of connection between described mill and described housing.
Described plug flow device and described fixed millstone and described movable grinding disc are coaxially arranged.
Described plug flow device is auger.
Described power transmission shaft runs through described fixed millstone and is connected with described movable grinding disc, and described plug flow device is connected with described movable grinding disc, and described plug flow device and described power transmission shaft are positioned at the both sides of described movable grinding disc.
The technique of described batch (-type) paste mill grinding, comprising:
(1) primary clearance adjusted between movable grinding disc and fixed millstone is 0.5-5mm, close described grout outlet, sent into by slurries in described fiberizer housing, open described plug flow device and described movable grinding disc, described plug flow device promotion slurries enter described grinding clearance and carry out defibrination;
(2) gap between movable grinding disc and fixed millstone is successively reduced, until described gap is reduced to 0.005-0.1mm;
(3) close described plug flow device and described movable grinding disc, open the paper pulp that described grout outlet releases milled.
The technique of described defibrination comprises:
(1) primary clearance adjusted between movable grinding disc and fixed millstone is 0.5mm, be that the chemical wood pulp of 5-20wt% is sent in described fiberizer housing by concentration, open described plug flow device and described movable grinding disc, described plug flow device promotion slurries enter described grinding clearance and carry out defibrination, and the defibrination time is 5-10min;
(2) described gap is adjusted to 0.4mm, runs 5-10min;
(3), after step (2) terminates, every 5-10min, 0.1mm is reduced, until described gap is adjusted to 0.1mm in described gap;
(4), after step (3) terminates, every 5-10min, 0.01mm, the 5-10min until rerun after being adjusted to 0.01mm in described gap are reduced in described gap;
(5) close described plug flow device and described movable grinding disc, open described grout outlet and release the paper pulp of having polished.
The technique of described defibrination comprises:
(1) primary clearance adjusted between movable grinding disc and fixed millstone is 2.5mm, be that sub-wire wood chip slurry or the sub-wire blade slurry of 5-20wt% is sent in described fiberizer housing by concentration, open described plug flow device and described movable grinding disc, described plug flow device promotion slurries enter described grinding clearance and carry out defibrination, every 5-10min, 0.3-0.5mm is reduced, until described gap is adjusted to 1mm in described gap;
(2), after step (1) terminates, every 5-10min, 0.1mm is reduced, until described gap is adjusted to 0.1mm in described gap;
(3), after step (2) terminates, every 5-10min, 0.01mm, the 5-10min until rerun after being adjusted to 0.01mm in described gap are reduced in described gap;
(4) close described plug flow device and described movable grinding disc, open described grout outlet and release the paper pulp of having polished.
The technique of described defibrination comprises:
(1) primary clearance adjusted between movable grinding disc and fixed millstone is 3-5mm, be that the wood chip of 5-20wt% or slurry person blade slurry are sent in described fiberizer housing by concentration, open described plug flow device and described movable grinding disc, described plug flow device promotion slurries enter described grinding clearance and carry out defibrination, every 5-10min, 0.2-0.5mm is reduced, until described gap is adjusted to 1mm in described gap;
(2), after step (1) terminates, every 5-10min, 0.1mm is reduced, until described gap is adjusted to 0.1mm in described gap;
(3), after step (2) terminates, every 5-10min, 0.01mm, the 5-10min until rerun after being adjusted to 0.01mm in described gap are reduced in described gap;
(4) close described plug flow device and described movable grinding disc, open described grout outlet and release the paper pulp of having polished.
In described step (1), in described slurries, add bleaching agent and chemical treatments.
Described bleaching agent and chemical treatments are H
2o
2and NaOH.
Refining process of the present invention is provided with different preparation technologies for different paper pulp, and the advantage arranged like this is:
Technique of the present invention is by setting gradually the grinding clearance reduced gradually in the different periods, the higher paper pulp of long fiber component content can also be prepared while the low Specific energy of guarantee, reason be if primary clearance arrange less, the coarse fiber bundle then entered between described mill is easily cut off, thus make the component content of the slurries medium-length fibre obtained less, and then cause the paper tensile strength that obtains less, the present invention is by arranging larger primary clearance, can ensure that fibre bundle is not also cut off while carrying out beating, then in technique after this, grinding clearance is reduced gradually, long fiber is made to obtain effective protection, thus the paper with high-tensile and pop strength can be prepared.
Wherein, by technique of starching for ground wood sheet slurry or blade of the present invention, point wire process before defibrination can be saved, not only can reduce equipment investment, and compare traditional technological process of being furnished with sub-wire equipment there is lower Specific energy and better pulp quality.
The technique of defibrination of the present invention, when being also limited to mill sub-wire wood chip slurry or sub-wire blade slurry or wood chip slurry or blade slurry, in described step (1), bleaching agent and/chemical treatments is added in described slurries, such advantage is that chemical reaction process can reduce and even destroys fiber in plant fiber material and interfibrous adhesion, one be to reduce the cutting action to fiber when defibrination like this, be conducive to greatly improving pulp quality; Two is to reduce the energy required for dissociation plant fiber material, greatly reduces power consumption.The more important thing is, chemical reaction product can be gone out from the sur-face peeling of fiber by strong mechanical-physical process that defibrination produces in time, thus new chemical agent is contacted with new fiber surface, chemical reaction velocity can be made like this to accelerate more than ten times, under the prerequisite consuming same chemical agent, can obtain higher pulp quality, and slurrying flow process simplifies to some extent, equipment investment also reduces thereupon.
The advantage of batch (-type) fiberizer of the present invention is:
(1) batch (-type) fiberizer of the present invention, on the basis that housing, mill, power transmission shaft, clearance adjustment mechanism are set, also be provided with plug flow device, and feed pathway is provided with on described fixed millstone or described movable grinding disc, two bottom surfaces that described feed pathway runs through described fixed millstone or described movable grinding disc are arranged, and the discharge end of described plug flow device is arranged towards described feed pathway; Backflow gap is provided with between described plug flow device and described housing and between described mill and described housing.Batch (-type) fiberizer of the present invention, operationally, described plug flow device promotes described slurries and enters between described movable grinding disc and described fixed millstone by described feed pathway, gets back near described thrust unit again from the slurries flowed out between described movable grinding disc and described fixed millstone by described backflow gap; Can realize repeatedly defibrination by the circulation of slurry between described mill, the number of times of defibrination is not by the restriction of equipment; And can be realized the adjustment of abrasive disk space by described clearance adjustment mechanism, thus can adapt to the change of slurry, batch (-type) fiberizer equipment of the present invention is simple, flexible operation;
In addition, batch (-type) fiberizer of the present invention, have selective to the slurry of polishing, reason is, after slurrying starts, is thrown out of under the centrifugal action of grinding tool from grinding clearance paper pulp out, get back near described plug flow device through described backflow gap again, in this course, the fine fibre of having polished is comparatively large due to proportion, is thrown in the backflow gap away from described plug flow device under the influence of centrifugal force; And the crude fibre of not polishing or thick wood chip and blade are due to containing lumen intact in a large number, proportion is less, therefore can be gathered near plug flow device, defibrination is repeatedly realized under the impetus of plug flow device, thus ensure that fiberizer to the even defibrination of all paper pulp, can improve efficiency and the quality of making beating.
(2) batch (-type) fiberizer of the present invention, arranging described plug flow device is auger, and reason is that described auger has higher plug-flow efficiency.The present invention also arranges described power transmission shaft further and runs through described fixed millstone and be connected with described movable grinding disc, and described plug flow device is connected with described movable grinding disc, and described plug flow device and described power transmission shaft are positioned at the both sides of described movable grinding disc.Pass through this setup, when described power transmission shaft rotates, described movable grinding disc and described auger can be driven simultaneously to rotate, thus while realizing defibrination, also achieve the rotation plug-flow of auger, again for auger arranges independent power set, effectively need not save energy consumption.
Accompanying drawing explanation
In order to make content of the present invention more easily be understood, the present invention will be further detailed content of the present invention with detailed description of the invention by reference to the accompanying drawings.
The structure chart of batch (-type) fiberizer of the present invention as shown in Figure 1;
The structure chart of the convertible mode of batch (-type) fiberizer of the present invention as shown in Figure 2;
The structure chart of clearance adjustment mechanism of the present invention as shown in Figure 3 and Figure 4;
Wherein, Reference numeral is:
1-fixed millstone; 2-movable grinding disc; 3-plug flow device; 4-housing; 5-power transmission shaft; 6-feed pathway; 7-backflow gap; 8-motor; 9-worm screw; 10-worm gear; 11-threaded rod; 12-universal driving shaft.
Detailed description of the invention
embodiment 1
Batch (-type) fiberizer described in the present embodiment, as shown in Figure 1, comprising:
Housing 4, described housing 4 is provided with stock inlet and the grout outlet that can control break-make;
Mill, comprise movable grinding disc 2 and the fixed millstone 1 of coaxial setting, described movable grinding disc 2 and fixed millstone 1 are arranged in described housing 4, are provided with grinding clearance between described movable grinding disc 2 and fixed millstone 1;
Power transmission shaft 5, is coaxially connected with described movable grinding disc 2, drives described movable grinding disc 2 to do synchronous rotary;
Clearance adjustment mechanism, for adjusting the gap between described movable grinding disc 2 and fixed millstone 1;
Plug flow device 3, is arranged in described housing 4, described fixed millstone 1 is provided with feed pathway 6, and two bottom surfaces that described feed pathway runs through described fixed millstone 1 are arranged, and the discharge end of described plug flow device 3 is arranged towards described feed pathway 6; As preferred embodiment, plug flow device 3 described in the present embodiment is auger, and described auger and described fixed millstone 1 and described movable grinding disc 2 are coaxially arranged;
Between described plug flow device 3 and described housing 4 and be provided with the backflow gap 7 of connection between described mill and described housing.
Utilize the batch (-type) fiberizer described in the present invention to beat the technique of chemical wood pulp, comprising:
(1) primary clearance adjusted between movable grinding disc 2 and fixed millstone 1 is 0.5mm, close described grout outlet, the hardwood chemical pulp being 15wt% by the concentration after bleaching is sent in described fiberizer housing 4, open described plug flow device 3 and described movable grinding disc 2, described plug flow device 3 promotes slurries and enters described grinding clearance and carry out defibrination, and the defibrination time is 10 minutes;
(2) gap between movable grinding disc 2 and fixed millstone 1 is reduced to 1mm, defibrination 10 minutes;
(3) gap between movable grinding disc 2 and fixed millstone 1 is reduced to 0.5mm, defibrination 10 minutes;
(4) gap between minimizing movable grinding disc 2 and fixed millstone 1 is to 0.005mm, and defibrination 10 minutes, namely obtains the slurries of milled;
(5) close described plug flow device 3 and described movable grinding disc 2, open described grout outlet and release the paper pulp of having polished.
In the present embodiment, the rotating speed of movable grinding disc is 300 revs/min, and in the defeated slurry amount that auger is per minute and housing, the ratio of slurries total amount is 1/3.
embodiment 2
Batch (-type) fiberizer described in the present embodiment, as shown in Figure 2, comprising:
Housing 4, described housing 4 is provided with stock inlet and the grout outlet that can control break-make;
Mill, comprise movable grinding disc 2 and the fixed millstone 1 of coaxial setting, described movable grinding disc 2 and fixed millstone 1 are arranged in described housing 4, are provided with grinding clearance between described movable grinding disc 2 and fixed millstone 1;
Power transmission shaft 5, is coaxially connected with described movable grinding disc 2, drives described movable grinding disc 2 to do synchronous rotary; Power transmission shaft 5 described in the present embodiment runs through described fixed millstone 1 and is connected with described movable grinding disc 2.
Clearance adjustment mechanism, for adjusting the gap between described movable grinding disc 2 and fixed millstone 1;
Plug flow device 3, is arranged in described housing 4, described movable grinding disc 2 is provided with feed pathway 6, and two bottom surfaces that described feed pathway 6 runs through described movable grinding disc 2 are arranged, and the discharge end of described plug flow device 3 is arranged towards described feed pathway 6; Described plug flow device 3 is connected with described movable grinding disc 2, and described plug flow device 3 and described power transmission shaft 5 are positioned at the both sides of described movable grinding disc 2; Plug flow device 3 described in the present embodiment is and described fixed millstone 1 and the coaxial auger arranged of described movable grinding disc 2.
Between described plug flow device 3 and described housing 4 and be provided with the backflow gap 7 of connection between described mill and described housing.
Utilize the batch (-type) fiberizer described in the present invention to beat the technique of chemical wood pulp, comprising:
(1) primary clearance adjusted between movable grinding disc 2 and fixed millstone 1 is 0.5mm, close described grout outlet, be that the hardwood chemical pulp of 5wt% is sent in described fiberizer housing 4 by concentration, open described plug flow device 3 and described movable grinding disc 2, described plug flow device 3 promotes slurries and enters described grinding clearance and carry out defibrination, and the defibrination time is 5min;
(2) described gap is adjusted to 0.4mm, runs 5min;
(3), after step (2) terminates, every 5min, 0.1mm is reduced, until described gap is adjusted to 0.1mm in described gap;
(4), after step (3) terminates, every 5min, 0.01mm is reduced, until rerun after being adjusted to 0.01mm 5 minutes in described gap in described gap;
(5) close described plug flow device 3 and described movable grinding disc 2, open described grout outlet and release the paper pulp of having polished.
The rotating speed of movable grinding disc is 1000 revs/min, and in the defeated slurry amount that auger is per minute and housing, the ratio of slurries total amount is 1/3.
embodiment 3
A kind of batch (-type) fiberizer of the present invention, as shown in Figure 2, comprising:
Housing 4, described housing 4 is provided with stock inlet and the grout outlet that can control break-make;
Mill, comprise movable grinding disc 2 and the fixed millstone 1 of coaxial setting, described movable grinding disc 2 and fixed millstone 1 are arranged in described housing 4, are provided with grinding clearance between described movable grinding disc 2 and fixed millstone 1;
Power transmission shaft 5, is coaxially connected with described movable grinding disc 2, drives described movable grinding disc 2 to do synchronous rotary; Power transmission shaft 5 described in the present embodiment runs through described fixed millstone 1 and is connected with described movable grinding disc 2.
Clearance adjustment mechanism, for adjusting the gap between described movable grinding disc 2 and fixed millstone 1;
Plug flow device 3, is arranged in described housing 4, described movable grinding disc 2 is provided with feed pathway 6, and two bottom surfaces that described feed pathway runs through described movable grinding disc 2 are arranged, and the discharge end of described plug flow device 3 is arranged towards described feed pathway 6; Described plug flow device 3 is connected with described movable grinding disc 2, and described plug flow device 3 and described power transmission shaft 5 are positioned at the both sides of described movable grinding disc 2; Plug flow device 3 described in the present embodiment is and described fixed millstone 1 and the coaxial auger arranged of described movable grinding disc 2.
Between described plug flow device 3 and described housing 4 and be provided with the backflow gap 7 of connection between described mill and described housing 4.
Utilize the batch (-type) fiberizer described in the present invention to beat the technique of chemical wood pulp, comprising:
(1) primary clearance adjusted between movable grinding disc 2 and fixed millstone 1 is 0.5mm, close described grout outlet, be that the hardwood chemical pulp of 20wt% is sent in described fiberizer housing 4 by concentration, open described plug flow device 3 and described movable grinding disc 2, described plug flow device 3 promotes slurries and enters described grinding clearance and carry out defibrination, and the defibrination time is 10min;
(2) described gap is adjusted to 0.4mm, runs 10min;
(3), after step (2) terminates, every 10min, 0.1mm is reduced, until described gap is adjusted to 0.1mm in described gap;
(4), after step (3) terminates, every 10min, 0.01mm is reduced, until rerun after being adjusted to 0.01mm 10 minutes in described gap in described gap;
(5) close described plug flow device 3 and described movable grinding disc 2, open described grout outlet and release the paper pulp of having polished.
The rotating speed of movable grinding disc is 500 revs/min, and in the defeated slurry amount that auger is per minute and housing, the ratio of slurries total amount is 1/10.
embodiment 4-7
Batch (-type) fiberizer described in embodiment 4-7 is with embodiment 3, and the beating process in described embodiment 4-7 is as shown in the table:
In the above-described embodiments, described plug flow device is preferably auger, and as selectable embodiment, described plug flow device also can be selected such as to add the plug flow devices of the prior art such as pump unshrouded impeller.The discharge end of the plug flow device described in the present invention is that described plug flow device promotes described material one end away from described plug flow device.
Preferred embodiment, in the defibrination process of above-described embodiment, the rotating speed of movable grinding disc is 300-1500 rev/min in same conduct, and in the defeated slurry amount that auger is per minute and housing, the ratio of slurries total amount is 1/3-1/10.
In addition, the clearance adjustment mechanism in above-described embodiment as shown in Figure 3 and Figure 4, comprising:
Motor 8;
Worm screw 9 and worm gear 10, described worm screw 9 is connected with described motor and arranges, and described worm gear 10 and the supporting setting of described worm screw, be provided with inner ring screw thread at the inner ring of described worm gear;
Threaded rod 11, the nested inner ring being arranged on described worm gear of described threaded rod 11, the outer wall of described threaded rod 11 is provided with the outer wall thread matched with described inner ring screw thread;
Gangbar 12, one end of described gangbar 12 is fixedly connected with described threaded rod 11, and the other end is connected with described fixed millstone 1;
The course of work of this clearance adjustment mechanism is:
The rotation of motor 8 is passed to worm gear by worm screw, drive described worm gear wheel, drive described threaded rod 11 to move up and down again when described worm gear wheel, and by gangbar, this action moved up and down is passed to described fixed millstone 1, thus the grinding clearance between described fixed millstone 1 and described movable grinding disc 2 is adjusted.
As selectable embodiment, described clearance adjustment mechanism also can be arranged to regulator that is manually arbitrary in prior art or On-line Control.
experimental example
In order to prove the effect of instrument and supplies described in the present invention, the present invention carries out copy paper to the paper pulp that embodiment 1-7 obtains, and the tensile strength (in length and breadth to average) of the paper recorded is:
comparative example
In order to prove the effect of instrument and supplies described in the present invention further, the present invention is also provided with comparative example, the continous mode fiberizer of two series connection in prior art is used in comparative example, the abrasive disk space of First fiberizer is 0.5mm, the abrasive disk space of second fiberizer is 0.005mm, in described comparative example enter slurries with in embodiment 1 to enter slurries identical, slurries are introduced into First fiberizer, the slurries of discharging from the outlet of First fiberizer enter second fiberizer again, the outlet slurry of second fiberizer is utilized to carry out copy paper, the tensile strength (in length and breadth to average) of the paper recorded is 60N/m.
As can be seen from the above results, the paper tensile strength that the slurries that the instrument and supplies described in the embodiment of the present invention 1 prepares are made is better than the equipment and process in comparative example.
Although the present invention is elaborated it by detailed description of the invention; but; those skilled in the art should be understood that and made on this basis not exceed any form of claims and the change of details, all belong to invention which is intended to be protected.
Claims (10)
1. a batch (-type) fiberizer, comprising:
Housing (4), described housing (4) is provided with stock inlet and the grout outlet that can control break-make;
Mill, comprise movable grinding disc (2) and the fixed millstone (1) of coaxial setting, described movable grinding disc (2) and fixed millstone (1) are arranged in described housing (4), are provided with grinding clearance between described movable grinding disc (2) and fixed millstone (1);
Power transmission shaft (5), is coaxially connected with described movable grinding disc (2), drives described movable grinding disc (2) to do synchronous rotary;
Clearance adjustment mechanism, for adjusting the described grinding clearance between described movable grinding disc (2) and fixed millstone (1);
It is characterized in that, be also provided with:
Plug flow device (3), be arranged in described housing (4), described fixed millstone (1) or described movable grinding disc (2) are provided with feed pathway (6), two bottom surfaces that described feed pathway runs through described fixed millstone (1) or described movable grinding disc (2) are arranged, and the discharge end of described plug flow device (3) is arranged towards described feed pathway (6);
Between described plug flow device (3) and described housing (4) and be provided with the backflow gap (7) of connection between described mill and described housing (4).
2. batch (-type) fiberizer according to claim 1, is characterized in that, described plug flow device (3) is coaxially arranged with described fixed millstone (1) and described movable grinding disc (2).
3. batch (-type) fiberizer according to claim 1 and 2, is characterized in that, described plug flow device (3) is auger.
4. batch (-type) fiberizer according to claim 3, it is characterized in that, described power transmission shaft (5) runs through described fixed millstone (1) and is connected with described movable grinding disc (2), described plug flow device (3) is connected with described movable grinding disc (2), and described plug flow device (3) and described power transmission shaft (5) are positioned at the both sides of described movable grinding disc (2).
5. utilize the technique of the arbitrary described batch (-type) paste mill grinding of claim 1-4, comprising:
(1) the initial grinding clearance adjusted between movable grinding disc (2) and fixed millstone (1) is 0.5-5mm, close described grout outlet, slurries are sent in described fiberizer housing (4), open described plug flow device (3) and described movable grinding disc (2), described plug flow device (3) promotion slurries enter described grinding clearance and carry out defibrination;
(2) grinding clearance between movable grinding disc (2) and fixed millstone (1) is successively reduced, until described grinding clearance is reduced to the arbitrary value in 0.005-0.1mm;
(3) close described plug flow device (3) and described movable grinding disc (2), open the paper pulp that described grout outlet releases milled.
6. the technique of defibrination according to claim 5, is characterized in that, comprising:
(1) the initial grinding clearance adjusted between movable grinding disc (2) and fixed millstone (1) is 0.5mm, be that the chemical wood pulp of 5-20wt% is sent in described fiberizer housing (4) by concentration, open described plug flow device (3) and described movable grinding disc (2), described plug flow device (3) promotion slurries enter described grinding clearance and carry out defibrination, and the defibrination time is 5-10min;
(2) described grinding clearance is adjusted to 0.4mm, runs 5-10min;
(3), after step (2) terminates, every 5-10min, described grinding clearance is reduced 0.1mm, until described grinding clearance is adjusted to 0.1mm;
(4), after step (3) terminates, every 5-10min, described grinding clearance is reduced 0.01mm, the 5-10min until described grinding clearance reruns after being adjusted to 0.01mm;
(5) close described plug flow device (3) and described movable grinding disc (2), open described grout outlet and release the paper pulp of having polished.
7. the technique of defibrination according to claim 5, is characterized in that, comprising:
(1) the initial grinding clearance adjusted between movable grinding disc (2) and fixed millstone (1) is 2.5mm, be that sub-wire wood chip slurry or the sub-wire blade slurry of 5-20wt% is sent in described fiberizer housing (4) by concentration, open described plug flow device (3) and described movable grinding disc (2), described plug flow device (3) promotion slurries enter described grinding clearance and carry out defibrination, every 5-10min, described grinding clearance is reduced 0.3-0.5mm, until described grinding clearance is adjusted to 1mm;
(2), after step (1) terminates, every 5-10min, described grinding clearance is reduced 0.1mm, until described grinding clearance is adjusted to 0.1mm;
(3), after step (2) terminates, every 5-10min, described grinding clearance is reduced 0.01mm, the 5-10min until described grinding clearance reruns after being adjusted to 0.01mm;
(4) close described plug flow device (3) and described movable grinding disc (2), open described grout outlet and release the paper pulp of having polished.
8. the technique of defibrination according to claim 5, is characterized in that, comprising:
(1) the initial grinding clearance adjusted between movable grinding disc (2) and fixed millstone (1) is 3-5mm, be that wood chip slurry or the blade slurry of 5-20wt% is sent in described fiberizer housing (4) by concentration, open described plug flow device (3) and described movable grinding disc (2), described plug flow device (3) promotion slurries enter described grinding clearance and carry out defibrination, every 5-10min, described grinding clearance is reduced 0.2-0.5mm, until described grinding clearance is adjusted to 1mm;
(2), after step (1) terminates, every 5-10min, described grinding clearance is reduced 0.1mm, until described grinding clearance is adjusted to 0.1mm;
(3), after step (2) terminates, every 5-10min, described grinding clearance is reduced 0.01mm, the 5-10min until described grinding clearance reruns after being adjusted to 0.01mm;
(4) close described plug flow device (3) and described movable grinding disc (2), open described grout outlet and release the paper pulp of having polished.
9. the technique of the defibrination according to claim 7 or 8, is characterized in that, in described step (1), in described slurries, adds bleaching agent and chemical treatments.
10. the technique of defibrination according to claim 9, is characterized in that, described bleaching agent and chemical treatments are H
2o
2and NaOH.
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| CN108978319A (en) * | 2018-07-12 | 2018-12-11 | 福建省晋江优兰发纸业有限公司 | A kind of Novel copying paste-making method made of paper |
| CN114318925B (en) * | 2021-12-22 | 2023-06-06 | 浙江华章科技有限公司 | Operation method of pulping machine |
| CN114277600B (en) * | 2021-12-22 | 2023-06-06 | 浙江华章科技有限公司 | Safe operation control method of pulping machine |
| CN114438809B (en) * | 2021-12-22 | 2023-06-06 | 浙江华章科技有限公司 | Control method of pulping machine |
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| CN101565910A (en) * | 2008-04-25 | 2009-10-28 | 李�昊 | Refiner |
| CN103255667A (en) * | 2013-05-20 | 2013-08-21 | 华南理工大学 | High-consistency hydraulic disc mill |
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| CS203540B1 (en) * | 1978-11-07 | 1981-03-31 | Rudolf Kmeco | Milling elements for milling machines,especially for manufacturing specific paper and paperboard types |
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| CN2215503Y (en) * | 1994-12-30 | 1995-12-20 | 山东省诸城市造纸机械厂 | Vertical hydraulic beater with sand remover |
| CN101565910A (en) * | 2008-04-25 | 2009-10-28 | 李�昊 | Refiner |
| CN101463574A (en) * | 2008-12-10 | 2009-06-24 | 杭州振兴工业泵制造有限公司 | Double-cutting feed disc pulping machine |
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