CN2851328Y - Paste mill - Google Patents

Abstract

The utility model discloses a pulp grinder which comprises a grinding disc mechanism, a driving mechanism and a motor, wherein both of a grinder casing and the driving mechanism are arranged on a grinder seat; the grinding disc mechanism is arranged in the grinder casing; both of the grinder casing and the driving mechanism are arranged on the grinder seat; the grinding disc mechanism comprises a rotary grinding disc and a fixed grinding disc matched with the rotary grinding disc; the rotary grinding disc is arranged on the end of a main shaft; the fixed grinding disc is arranged on the inner wall of the grinder casing; concentric circle baffle dams are alternately staggered and arranged on the tooth surfaces of the rotary grinding disc and the fixed grinding disc; a round-trip shearing interval is arranged between the two concentric circle baffle dams on the tooth surface of each disc; a single-shearing interval is arranged among the staggered and adjacent concentric circle baffle dams of the two discs; each block of the grinding discs is provided with more than four round-trip shearing intervals; the width of the single-shearing interval and the depth of grinding teeth gradually become smaller following increases of the radius; the bottom of a first circle tooth near to the circle center of the rotary grinding disc forms a large inclined surface. The utility model can overcome the disadvantages of the prior art, and can reach the effects of high efficiency and low consumption.

Description

Fiberizer

Technical field

The utility model relates generally to the pulping and paper-making field, refers in particular to a kind of fiberizer.

Background technology

In the prior art, refining equipment mainly is jordan (comprising cylindrical and conical) and disc mill (double plate and single-deck), and the latter's application is more extensive.Disc mill again according to the concentration of institute's defibrination material be divided into high dense, in dense and low dense three kinds, it is generally acknowledged that slurry concentration is dense for hanging down below 5%, 5%～12% is dense in being, be high dense more than 12%, the too high slurry of concentration is difficult to enter in the narrow and small mill slot, form so-called " bridge formation " phenomenon, those more long stapled slurries particularly, this kind phenomenon is even more serious.Have in the conventional art in order to solve the problem that is difficult for entering slot than coarse particles, partly be provided with one " fracture area " at the stock inlet of mill, coarse particles enters the correct grinding district of narrow slot again after " fracture area " fragmentation.But the ratio of the shared mill area of this method " fracture area " is very big, and correct grinding district area is reduced, and it is few to cause slurry to improve through " beating degree " (degree of test slurry thickness) behind the grinding machine, and this has just influenced whole structure.High dense and low dense grinding machine no matter, the retaining dam of its mill slot also is another reason that influences refining effect very little.In order to obtain the slurry of height " beating degree ", generally adopt many grinding machine tandem workings, but being not suitable for pipeline, carries high consistency stock, so unsuitable many tandem workings of high dense grinding machine.Most of producers all select the high low dense fiberizer of energy consumption for use.The uniformity that it is exactly pulp quality that high-density paste mill also has two shortcomings is very poor and slurry obstruction slot is serious.So the higher paper of class is not suitable for the high concentration defibrination.Therefore middle concentrated jordaning receives special the concern and attention.

People are devoted to the research of roll flute shape for a long time, to improve the effect of defibrination, have but ignored an important problem, and that is exactly: the hanging amount is inhomogeneous on the whole mill flank of tooth.Because advance to starch radius less, the pulp radius is bigger, slurry moves to the long radius direction after minor radius enters slot, girth constantly increases, will inevitably cause the continuous attenuation of slurry, the outlet girth is than reaching more than 3 times that import girth has, and in other words, the slurry thickness in exit has only about 1/3 of import department.But slurry is not a clear water, there is no fear of being evenly distributed in all teeth groove, and is all the more so when particularly concentration is higher.The slurry major part that mill is not good fully is slurry group and lumps in addition, and this just makes a lot of flank of tooth hang not spreading mass.Can imagine thus, the mill radius is got over general goal, it is just serious more that its flank of tooth does not have the hanging phenomenon, but the operator is in order to improve the beating degree of slurry, has only the pressure that strengthens between two mills, the flank of tooth pressure that hangs up slurry is on a small quantity increased, cause fiber is cut off, a large amount of long fibers have become staple fibre, the tension intensity that makes into paper descends, and because hanging amount inequality on the whole dish tooth has a lot of flank of tooth not hang up slurry, these flank of tooth that do not hang up slurry cause the direct friction between the metal covering, noise shake ear, the temperature rise of grinding machine outlet slurry, thereby lot of energy changes heat energy and acoustic energy into, caused power consumption serious.

The utility model content

The technical problems to be solved in the utility model is: at the technical problem that prior art exists, the utility model provide a kind of easy to operate, simple in structure, with low cost, can reduce energy consumption and improve the fiberizer of pulp quality and output.

In order to solve the problems of the technologies described above, the solution that the utility model proposes is: a kind of fiberizer, and it comprises disc-grinding mechanism, transmission mechanism and the motor that connects successively, casing and transmission mechanism all are installed on the support; Disc-grinding mechanism comprises rotary grinding disk and the fixed millstone that cooperates with rotary grinding disk, rotary grinding disk is installed on main shaft one end of transmission mechanism, fixed millstone is installed on casing inner wall, described transmission mechanism mainly comprises main shaft, bearing block, active shaft coupling and driven shaft coupling, driven shaft coupling be installed on the main shaft of fiberizer and kink in the active shaft coupling, initiatively shaft coupling is loaded on the motor reel, it is characterized in that: be provided with concentric circles retaining dam in the teeth groove of described rotary grinding disk and fixed millstone, be between a round shear zone between per two concentric circles retaining dam, the concentric circles that every mill is provided with more than 4 comes and goes between the shear zone, the concentric circles retaining dam of rotary grinding disk and fixed millstone alternately shifts to install, cut the interval for simple shear between the concentric circles retaining dam that adjoins mutually after two mills shift to install, tooth depth and simple shear are cut and interval widely all strengthened with radius and diminish gradually, it is characterized in that: the gullet base of the first lap roll flute in the close center of circle is that the abrupt slope is skewed on the described rotary grinding disk, its stock inlet place tooth depth maximum, the straight first lap concentric circles of going up that tilts keeps off the following place of dam tooth top, and profile of tooth is positive profile of tooth.

The roll flute of described mill all becomes 8 °～15 ° angle with the mill diameter line, between same round shear zone and simple shear cut interval in the thickness of tooth top equate.

Described mill is except that the first lap tooth of import department, and big inclination angle at 45 is all made with retaining corner, dam in two ends at the bottom of all the other all teeth.

Described fiberizer further comprises the slurry enrichment facility, described slurry enrichment facility comprises shell and screen cylinder, the stock inlet place of shell is provided with the stock inlet end cap and is connected with the large end face of conical shell, screen cylinder is loaded in the shell, the inwall of screen cylinder and shell forms an annular compartment, the chamber below has a delivery port, the delivery port place is equipped with a valve, the rear end of shell links to each other with fiberizer, it is characterized in that: be provided with rotary blade near stock inlet end cap one end in the described screen cylinder, end near fiberizer is provided with pushing spiral, and described rotary blade and pushing spiral all are installed in the end of fiberizer main shaft.

Described screen cylinder is fixed in the junction of stock inlet volute shape end cap and conical shell end.

Described screen cylinder is conical.

Offer several semi-circular groove on the described active shaft coupling inwall, offer and the circular blind hole of this half slot in the bottom of groove with radius, on the cylindrical of driven shaft coupling, offer the half slot that matches with active shaft coupling upper half-round slot, be equiped with compliant pin in the half slot.

Compared with prior art, advantage of the present utility model is:

1. the enrichment facility that possesses of the utility model self, this enrichment facility directly and fiberizer fuse, do not need to set up in addition other slurry concentrators, screw conveyor and screw feed equipment, both greatly reduced the loss of energy, reduced floor space again, and made operation very convenient; This enrichment facility can make slurry rotation at a high speed under the moving blade effect of rotary blade, can make its centrifugal dehydration, but slurry self is flush clean sieve seam also, and the angle that the moving blade of rotary blade and axis form is moving slurry at a high speed to the mill direction in the rotation, the thrust that adds pushing spiral is exerted pressure to the slurry that concentration has increased, slurry is entered in the fiberizer in the rotary grinding disk teeth groove fast, do not cause the obstruction in the enrichment facility, thereby increased the power of slurry motion, improved operating efficiency; This enrichment facility can make slurry select refining concentration arbitrarily by the discharge rate of regulating filtered water before mill, carries out defibrination again after concentrating earlier and accomplishs without any letup, and does not need to join in addition slurry concentrator and screw conveyor; The waste water that utilizes this enrichment facility to discharge can enter trench or flow into pulper and recycle, and the mill disposed slurry adds the clear water dilution after falling into stock tank in addition, can play the effect of filtering stock like this; Also filtered water can be flowed in the stock tank of mill back, can also play water-saving effect, not only reduce the loss of part fiber fines in the water, also reduce the pollution of environment, this shows that enrichment facility of the present utility model also has the advantage of environmental protection, saving.

2, the mill of the utility model fiberizer reduces along with radius strengthens tooth depth gradually because mill advances the tooth depth increasing of slurry place; The interval width of cutting simple shear between the two adjacent concentric circles retaining dams, two mills dislocation back also strengthens with radius and reduces.Like this arrangement can make slurry in the same diameter mill not only the slurry throughput increase but also more shearing number of times arranged, also can make the flank of tooth hanging amount on the whole fluted disc be tending towards even.Stopped not hang up the direct friction between the slurry flank of tooth metal, thereby eliminated operating noise substantially, reduced the temperature of wearing into slurry, increased the service life of mill, greatly reduce the ton slurry power consumption of defibrination operation, owing to can make flank of tooth hanging amount be evenly distributed, under the situation that does not increase pressure between two mills, can eliminate the cutting action of fiber substantially, thereby make the fiber wire-dividing broom purification, the original length that keeps fiber is enhanced to the tension intensity of paper, has reduced the loss of fiber, this defibrination to short stock is very favorable, must strengthen pressure between two mills for long stapled defibrination, and make refining concentration too high, the long stapled cutting action of favourable like this part;

3, the mill that is used for fiberizer of the present utility model is made into commutating tooth with the profile of tooth of rotary grinding disk first lap tooth, so more helps strengthening the front shear effect to slurry, helps the fragmentation of thick slurry, can also simplify the casting technique of mill simultaneously; The teeth groove of rotary grinding disk first lap tooth is widened with stock inlet place teeth groove and is deepened, and will help like this than coarse particles and easier the entering in the roll flute groove of slurry of containing the particle in half a lifetime; And the bottom land of rotary grinding disk first lap tooth is become in the shape inclination directly of abrupt slope, below first lap concentric circles retaining dam tooth top, locate, like this can be fully with the centrifugal force of slurry in the teeth groove and front pushing spiral to the pressure of slurry under the effect on gullet base inclined-plane, be converted into axial thrust and enter in the first lap teeth groove of fixed millstone after slurry can be ground very soon;

4, the mill of the utility model fiberizer be because being multiplied to the enrichment of slurry and alternately shearing number of times in same diameter mill not only can reduce power that defibrination consumes greatly, and can significantly reduce paper stock power that acceleration consumes; Further that mill is all roll flutes all become 10 ° of left and right sides angles and thick equating with diameter line, can parallelly not collide in the time of making the contact of the two mill flank of tooth like this, and same interval inside groove is widened with radius, help slurry minor radius in teeth groove like this and move freely, eliminated the generation that slurry stops up the slot phenomenon toward the direction of long radius;

5, the mill of the utility model fiberizer can make the gullet base two ends corner big oblique angle at 45 between the two concentric circles retaining dam and eliminate normal impact when alternately flowing in the teeth groove of slurry between two mills, enter the kinetic energy that is consumed in the next stage slot process of rotating disk by the price fixing slot thereby reduced again after slurry enters the price fixing slot by the rotating disk slot, also just reduced slurry slurry power that acceleration consumes in entering rotating disk next stage slot;

6. the shaft coupling of the utility model fiberizer can effectively be avoided the phenomenon appearance that driven shaft coupling metal claw fracture of conventional mill and compliant pin are damaged easily;

7, gap and the pressure between the utility model two mills is to be regulated by the manual worm gear worm screw.For preventing grinding machine automatic withdrawal in service, not operation one end of worm screw is provided with the braking locator, is made up of orifice plate, steel ball and spring, can regulate arbitrarily in two abrasive disk space error 0.01mm scopes.

Description of drawings

Fig. 1 is the generalized section of the utility model fiberizer;

Fig. 2 is the utility model enrichment facility structural representation;

Fig. 3 is the utility model rotary grinding disk front view;

Fig. 4 is the utility model rotary grinding disk cutaway view;

Fig. 5 is the A-A generalized section of first order roll flute on the utility model rotary grinding disk;

Fig. 6 is the utility model fixed millstone front view;

Fig. 7 is the utility model fixed millstone cutaway view;

Fig. 8 is the utility model lead spindle cutaway view;

Fig. 9 is an initiatively shaft coupling left view of the utility model;

Figure 10 is the driven shaft coupling cutaway view of the utility model;

Figure 11 is the driven shaft coupling left view of the utility model.

The specific embodiment

Below with reference to accompanying drawing the utility model is described in further details.

As shown in Figure 1, a kind of fiberizer of the present utility model, it comprises disc-grinding mechanism, transmission mechanism and the motor that connects successively, and disc-grinding mechanism is installed in the casing 5 with screw, and casing 5 all is installed on the support 6 with screw with transmission mechanism; Disc-grinding mechanism comprises rotary grinding disk 21 and the fixed millstone 22 that cooperates with rotary grinding disk 21, rotary grinding disk 21 is installed on main shaft 31 1 ends of transmission mechanism, fixed millstone 22 is installed on casing 5 inwalls, this transmission mechanism mainly comprises main shaft 31, bearing block 32, active shaft coupling 33 and driven shaft coupling 34, driven shaft coupling 34 be installed on the main shaft 31 of fiberizer and kink in active shaft coupling 33, initiatively shaft coupling 33 is loaded on the motor reel of motor 4.

Extremely shown in Figure 7 as Fig. 3, alternately misplace on the flank of tooth of this rotary grinding disk 21 and fixed millstone 22 and be provided with rotary grinding disk concentric circles retaining dam 212 and fixed millstone concentric circles retaining dam 221, be between a round shear zone between per two rotary grinding disk concentric circles retaining dam 212 or the fixed millstone concentric circles retaining dam 221 on the dish, the concentric circles that the flank of tooth of every mill is provided with more than 4 comes and goes between the shear zone, between two concentric circles retaining dams that dislocation is adjoined mutually on the two mill flank of tooth is that a simple shear is cut the interval, simple shear is cut interval width and is strengthened with radius and diminish gradually, the roll flute tooth depth also strengthens with radius and diminishes gradually, and all roll flutes are commutating tooth on rotary grinding disk 21 and the fixed millstone 22.The space width of the first lap roll flute 211 in the close center of circle and this place's import tooth depth all are enlarged to more than the 20mm on the rotary grinding disk 21, and the bottom land of this first lap roll flute 211 becomes in the inclination directly of abrupt slope, till below first lap rotary grinding disk concentric circles retaining dam 212 tooth tops.The gullet base two ends of all the other all roll flutes and concentric circles retaining Ba Jiaojiaochu becomes 45 ° big oblique angle on the mill face of rotary grinding disk 21.Institute's geared surface all becomes 10 ° of left and right sides angles with the mill diameter line, roll flute thickness equates not strengthen with radius to change in the same interval.

Referring to Fig. 1 and Fig. 2, a kind of enrichment facility that is used for fiberizer, it comprises shell 13 and screen cylinder 14, the stock inlet place of shell 14 is provided with stock inlet end cap 12 and is connected with the large end face of conical shell 13, screen cylinder 14 is loaded in the shell 13, screen cylinder 14 forms an annular compartment 15 with the inwall of shell 13, chamber 15 belows have a delivery port 16, delivery port 16 places are equipped with a valve 17, the rear end of shell 13 links to each other with the fixed millstone of fiberizer 22, be provided with rotary blade 18 near stock inlet end cap 12 1 ends in the screen cylinder 14, the blade of this rotary blade 18 becomes 25 ° of angles with axis; End near fiberizer is provided with pushing spiral 19, and rotary blade 18 and pushing spiral 19 all are installed in the end of fiberizer main shaft 31.

As shown in Figs. 8 to 11, initiatively offer several semi-circular groove 331 on shaft coupling 33 inwalls, offer and the blind hole 332 of half slot 331 in the bottom of groove 331 with radius, on the outer wall of driven shaft coupling 34, offer the half slot 341 that matches with active shaft coupling 33 first circular troughs 331, with compliant pin transferring power in half slot 331,341, compliant pin is limited by the back-up ring of active shaft coupling 33 end faces, thereby has avoided hitting back and forth of it.

In preferred embodiment, on the rotary grinding disk 21 and the dam dislocation of the concentric circles of fixed millstone 22 retaining be arranged alternately and make the whole mill flank of tooth be divided into eight above defibrination simple shears to cut the interval.

Gap between rotary grinding disk 21 and the fixed millstone 22 is regulated by the manual worm gear worm mechanism, for preventing automatic withdrawal in service, the not operation end of worm screw is equipped with a braking locator, this null bit device is made up of orifice plate, steel ball, spring, the spring compression steel ball, steel ball then is pressed in arbitrary shallow bore hole of orifice plate, and after steel ball moved a hole, rotary grinding disk can move axially 0.01mm.

During grinding machine work, slurry is sent here the stock inlet volute shape end cap 11 that tangentially enters enrichment facility by stock pump, utilize the rotation of rotary blade 18 to make slurry stream in screen cylinder 14, do the rotation of high-speed screw line, after the centrifugal force that utilizes rotation to produce again makes the de-watering of slurries enrichment, slurry is forced to push in the slot of rotary grinding disk 21 first lap roll flutes 211 by latter end pushing spiral 19 again and carry out defibrination.The water that is gone out by screen cylinder 14 slit inner filtrations enters annular cavity 15 backs by delivery port 16 discharges, and delivery port 16 is adorned a valve 17, is used for regulating the discharge rate of filtered water, needs refining concentration (8% following concentration) to reach control.Rotor in the screen cylinder 14 is provided with the rotary blade 18 that comprises some blades at the stock inlet place, at first enter in the rotor blade after the slurry after concentrating is forced to advance by spiral and quicken, and then enter synchronously in the slot of rotary grinding disk 21 first lap roll flutes 211.Because all more than 20mm, the slurry that concentration is big can not produce " bridge formation " phenomenon herein for the width that should the interval roll flute and the degree of depth, and can enter smoothly in the mill district.The gullet base of rotary grinding disk 21 first lap roll flutes 211 becomes in the inclination directly of abrupt slope, help slurry because of the pressure thrust of rotating institute's centrifugal force that produces and feed auger changes axial force into behind the gullet base inclined-plane, enter very soon in the first lap slot of fixed millstone 22 after coarse particles being passed through grind under inclined-plane pressure effect.Exist in the time of because of inertia force and pressure, slurry can wash away rapidly along outer circular direction, runs into just can change behind second concentric circles retaining dam on the fixed millstone 22 in the slot that direction enters rotary grinding disk 21 roll flutes second circle.At this moment, slurry is rotated under the action of centrifugal force by rotary grinding disk 21, and slurry washes away toward the outer circular direction of rotary grinding disk 21, just changes again behind second concentric circles retaining dam of running into rotary grinding disk 21 roll flutes in the 3rd circle slot that direction pours fixed millstone 22 roll flutes.So alternate cycles is until leaving the mill external diameter, and slurry obtains shearing (i.e. making beating) more than 8 times and the chance that rubs altogether, and this is that traditional any type of fiberizer is all incomparable.This machine can unit operation also can series operation.

Claims (8)

1, a kind of fiberizer, it comprises disc-grinding mechanism, transmission mechanism and the motor that connects successively, casing and transmission mechanism all are installed on the support; Disc-grinding mechanism comprises rotary grinding disk and the fixed millstone that cooperates with rotary grinding disk, rotary grinding disk is installed on main shaft one end of transmission mechanism, fixed millstone is installed on casing inner wall, described transmission mechanism mainly comprises main shaft, bearing block, active shaft coupling and driven shaft coupling, driven shaft coupling be installed on the main shaft of fiberizer and kink in the active shaft coupling, initiatively shaft coupling is loaded on the motor reel, be provided with concentric circles retaining dam in the teeth groove of described rotary grinding disk and fixed millstone, be between a round shear zone between per two concentric circles retaining dam, the concentric circles that every mill is provided with more than 4 comes and goes between the shear zone, the concentric circles retaining dam of rotary grinding disk and fixed millstone alternately shifts to install, cut the interval for simple shear between the concentric circles retaining dam that adjoins mutually after two mills shift to install, tooth depth and simple shear are cut and interval widely all strengthened with radius and diminish gradually, it is characterized in that: the gullet base of the first lap roll flute in the close center of circle is that the abrupt slope is skewed on the described rotary grinding disk, its stock inlet place tooth depth maximum, the straight first lap concentric circles of going up that tilts keeps off the following place of dam tooth top, and profile of tooth is positive profile of tooth.

2, fiberizer according to claim 1 is characterized in that: the roll flute of described mill all becomes 8 °～15 ° angle with the mill diameter line, between same round shear zone and simple shear cut interval in the thickness of tooth top equate.

3, fiberizer according to claim 1 and 2 is characterized in that: described mill is except that the first lap tooth of import department, and big inclination angle at 45 is all made with retaining corner, dam in two ends at the bottom of all the other all teeth.

4, fiberizer according to claim 1 and 2, it is characterized in that: described fiberizer further comprises the slurry enrichment facility, described slurry enrichment facility comprises shell and screen cylinder, the stock inlet place of shell is provided with the stock inlet end cap and is connected with the large end face of conical shell, screen cylinder is loaded in the shell, and the inwall of screen cylinder and shell forms an annular compartment, and the chamber below has a delivery port, the delivery port place is equipped with a valve, and the rear end of shell links to each other with fiberizer; Be provided with rotary blade near stock inlet end cap one end in the described screen cylinder, an end of close fiberizer is provided with pushing spiral, and described rotary blade and pushing spiral all are installed in the end of fiberizer main shaft.

5, fiberizer according to claim 4 is characterized in that: described screen cylinder is fixed in the junction of stock inlet volute shape end cap and conical shell end.

6, fiberizer according to claim 4 is characterized in that: described screen cylinder is for conical.

7, fiberizer according to claim 1 and 2, it is characterized in that: offer several semi-circular groove on the described active shaft coupling inwall, offer and the circular blind hole of this half slot in the bottom of groove with radius, on the cylindrical of driven shaft coupling, offer the half slot that matches with active shaft coupling upper half-round slot, be equiped with compliant pin in the half slot.

8, fiberizer according to claim 4, it is characterized in that: offer several semi-circular groove on the described active shaft coupling inwall, offer and the circular blind hole of this half slot in the bottom of groove with radius, on the cylindrical of driven shaft coupling, offer the half slot that matches with active shaft coupling upper half-round slot, be equiped with compliant pin in the half slot.

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