CN202744877U - Grinding disc of defibrator - Google Patents
Grinding disc of defibrator Download PDFInfo
- Publication number
- CN202744877U CN202744877U CN 201220293369 CN201220293369U CN202744877U CN 202744877 U CN202744877 U CN 202744877U CN 201220293369 CN201220293369 CN 201220293369 CN 201220293369 U CN201220293369 U CN 201220293369U CN 202744877 U CN202744877 U CN 202744877U
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- Prior art keywords
- roll flute
- abrasive disc
- grinding
- fracture area
- corase grind
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Abstract
The utility model relates to a grinding disc of a defibrator. A grinding gear is arranged on a bottom plate of the grinding disc. The grinding gear is divided into three annular areas from inside to outside, i.e. a breaking area (1), a coarse grinding area (2) and a fine grinding area (3). The grinding disc of the defibrator is mainly characterized in that the grinding gear (10) of the breaking area (1) is separated from the grinding gear (20) of the coarse grinding area (2), and the lower end (20') of the grinding gear (20) of the coarse grinding area (2) is chamfered at 30-60 degrees; the grinding gear (10) of the breaking area (1) is arc-shaped; the upper end (10a) of the arc-shaped grinding gear (10) is tangential to an inner ring of a deslagging groove (B), the ratio of the arc radius R of the arc-shaped grinding gear (10) and the radius R1 of a ring formed by the lower root (20a) of the grinding gear (20) of the coarse grinding area is 0.18+-0.1:1, and the centering angle alpha of the arc-shaped grinding gear for breaking (10) is equal to 75-110 degrees. The grinding disc of the defibrator can effectively prevent hard impurities from damaging the grinding gear, so that the efficiency is improved, the service life of the grinding disc is prolonged, and the power consumption is reduced.
Description
Technical field
The utility model relates to
The grinding machine abrasive disc is particularly producedThe defibrator of fibre density plate
Use abrasive disc.
Background technology
Wood chip after using defibrator to boiling in the production of fibre density plate carries out the separation of wood chip fiber, the quiet abrasive disc of defibrator and moving abrasive disc cooperating under the mechanokinetic effect, and in the wood chip defibration process, abrasive disc has played the most key effect.The abrasive disc of prior art defibrator is divided into three tooth districts: fracture area, corase grind district and correct grinding district, fracture area is at first carried out broken apart to wood chip, the spile that gets off to fragmentation in the corase grind district grinds solution, separates with large fibre bundle, reach single fibre bundle and fiber fines bundle, the correct grinding district carries out further from solution the fibre bundle that corase grind is distinguished, reach less other fiber of level, to meet the demand of making the fibre density plate.
The prior art defibrator distributes from inside to outside with abrasive disc and is divided into fracture area, corase grind district and correct grinding district three rings tooth district, and the roll flute in three tooth districts interconnects on the abrasive disc, and the fracture area roll flute is
Linear pattern or slight curving arc (shown in accompanying drawing 1,2), fracture area → corase grind district → finish grind the one by one density of roll flute in district, the roll flute surface in fracture area and corase grind district unanimously and with roll flute surface, correct grinding district becomes constant slope to be connected.A large amount of wood chips and the fibre bundle assembled at the fracture area between cog when its shortcoming is work, in by the extruding and drag effect, so that the wood chip of fracture area between cog and fibre bundle form knot shape form, poor fluidity, be difficult to flow to next zone, be wood chip and the fibre bundle that the fracture area between cog is assembled is difficult to flow into corase grind district and fine grinding district, enter resistance between abrasive disc thereby increased wood chip, make the power consumption increase.In addition, often can sneak in the raw material such as the hard impurity such as screw rod, nut, stone, understand along with raw material enters in the grinding machine, the district that is broken
Linear pattern or slight curving arcRoll flute is directly pushed corase grind district and correct grinding district by force to, hard impurity is distinguished and is finish grinded by force the roll flute in district or remain in fracture area roll flute is caused the large damage of level by corase grind, cause abrasive disc to fiber decomposition efficiency fast reducing, production declining, abrasive disc shortens service life, and power consumption increases.
The utility model content
The purpose of this utility model is to improve for above-mentioned the deficiencies in the prior art, provides a kind of simple in structure, easily manufactured, and production efficiency is high
The defibrator abrasive disc.It can have preventing of friendshipHard impurity is raised the efficiency the infringement of roll flute, prolongs the service life of abrasive disc, reduces power consumption.
The utility model defibrator abrasive disc comprises moving abrasive disc and quiet abrasive disc, and abrasive disc constitutes by the monoblock type disk or by the polylith fanning strip, offers roll flute, roll flute at the base plate of abrasive discBe divided into from inside to outside three annuluses, i.e. fracture area 1, corase grind district 2 and correct grinding district 3, the roll flute surface in corase grind district 2 becomes the constant slope linking with the roll flute surface in correct grinding district 3, it is characterized in that:
1) disconnect between fracture area 1 roll flute 10 and corase grind district's 2 roll flutes 20, the bottom 20 ' of corase grind district 2 roll flutes 20 is the chamfering about 45 °, i.e. 30-60 ° of chamfering, the annulus that the lower end root 20a of corase grind district 2 roll flutes 20 forms
1The annulus that forms with the upper end 10a of fracture area 1 roll flute 10
2Spacing b=1-20mm, optimum value b=5-15mm so forms the annulars buffering except slag chute B in fracture area 1 and 2 in corase grind district;
2) fracture area 1 roll flute 10 is round-arced tooth, the upper end 10a of the broken roll flute 10 of circular arc with except in the slag chute B
Annulus 2Tangent, or substantially tangent, the arc radius R of the broken roll flute 10 of circular arc distinguishes the annulus that roll flute 20 lower end root 20a form with corase grind
1Radius
R1 ratio=0.18 ± 0.1:1, optimal proportion 0.18 ± 0.02:1, the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °, the other end of the broken roll flute 10 of circular arc be lower end 10b can with the inner circle of abrasive disc
3Intersect; When fracture area 1 radial width is large, the inner circle of abrasive disc
3 hour, namely existsThe inner circle of broken roll flute 10 lower ends and abrasive disc during the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °
3 can notWhen intersecting, the lower end 10b of the broken roll flute 10 of circular arc connects with the tangent or substantially tangent edge of this point (broken roll flute lower end 10b) and stretches tooth 10c, can be inner circle with abrasive disc along the length of stretching tooth 10c
3Intersect, the quantity of fracture area 1 roll flute 10 evenly distributes in circumference and offers;
The utility model, simple in structure, easily manufactured, because corase grind district's roll flute and fracture area roll flute are form of discontinuity, areas of disconnection namely cushions except slag chute B and plays the buffer strip effect, can alleviate the extruding that discharges between the fracture area roll flute wood chip and fibre bundle, the tooth surface in corase grind district is higher than the tooth surface of fracture area simultaneously, under sound abrasive disc relative motion percussion, the wood chip that making is broken distinguishes extrusion molding between roll flute and fibre bundle easily are opened loose, and the direction of motion is changed, the traffic direction redistribution of fiber is arranged, the more effective corase grind district that enters has increased the phase mutual friction between the fiber, improves separating power and efficient to fibre bundle.Particularly the fracture area roll flute is round-arced tooth, and be tangent matching relationship with buffering except slag chute B circular arc, improve the outside discharge motion mode of fracture area, the thrust of utilizing the mild angle of circular arc type crushing teeth and circular arc side to produce makes raw material progress into the corase grind district, active force is strong and steady, improve simultaneously interaction number of times and frequency between wood chip, the fibre bundle, improved the fiber decomposition efficiency of wood chip, reduced the abrasive disc running resistance, improve production efficiency, reduced power consumption.And to the hard impurity such as the screw rod that enters grinding machine, nut, stone, can not produce the outside dispatch effect of forcing, hard impurity can remain in buffering except among the slag chute B, remove the gyration of slag chute B annulus along buffering, in slag chute B, slowly grind off, can not force to enter the corase grind district and finish grind the district roll flute is caused damage, also make roll flute stressed evenly, greatly prolonged the service life of abrasive disc, enhanced productivity.
Description of drawings
Fig. 1, the 2nd, prior art abrasive disc structure form structure chart, itsThe fracture area roll flute is
Linear pattern or slight curving arc, andThe fracture area roll flute forms one with the roll flute in corase grind district.
Fig. 3, the 4th, the utility model example structure schematic diagram, wherein Fig. 4 is the A-A cutaway view of Fig. 3, the lower end 10b of broken roll flute 10 and the inner circle of abrasive disc when Fig. 3 has represented the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °
3 intersect.
Fig. 5The utility model example structure schematic diagram, when it has represented the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 ° the lower end 10b of broken roll flute 10 not with the inner circle of abrasive disc
3 intersect.
Fig. 6, the 7th,The utility model example structure schematic diagram, wherein Fig. 7 is the B-B cutaway view of Fig. 6, the lower end 10b of broken roll flute 10 and the inner circle of abrasive disc when Fig. 6 has represented the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °
3 can notWhen intersecting, the lower end 10b of the broken roll flute 10 of circular arc connects with the tangent edge of this point and stretches tooth 10c, and the length that tooth 10c is stretched on the edge can be the inner circle with abrasive disc
3Intersect.
Fig. 8Be the utility model example structure schematic diagram, it has represented that the lower end 10b of the broken roll flute 10 of circular arc is connected with the edge and stretches tooth 10c, and centering angle α=75 ~ 110 ° value is less, the situation when relatively large along the entrance angle β that stretches tooth 10c.
Fig. 9Be the utility model example structure schematic diagram, it has represented that the lower end 10b of the broken roll flute 10 of circular arc is connected with along stretching tooth 10c, and centering angle α=75 ~ 110 ° value is larger, the situation during along the entrance angle β less that stretches tooth 10c.
The specific embodiment
The utility model defibrator abrasive disc comprises moving abrasive disc and quiet abrasive disc, and abrasive disc constitutes by the monoblock type disk or by the polylith fanning strip, offers roll flute, roll flute at the base plate of abrasive discBe divided into from inside to outside fracture area 1, corase grind district 2 and correct grinding district 3, roll flute 20 surfaces in corase grind district 2 become constant slope to be connected with roll flute 30 surfaces in correct grinding district 3, disconnect between fracture area 1 roll flute 10 and corase grind district 2 roll flutes 20, the bottom 20 ' of corase grind district 2 roll flutes 20 is 30-60 ° of chamfering, the annulus that the lower end root 20a of corase grind district 2 roll flutes 20 forms
1The annulus that forms with the upper end 10a of fracture area 1 roll flute 10
2Spacing b=5-15mm, so form the annulars buffering except slag chute B in fracture area 1 and 2 in corase grind district, fracture area 1 roll flute 10 be round-arced tooth, the upper end 10a of the broken roll flute 10 of circular arc with remove slag chute B in
Annulus 2Tangent, the arc radius R of the broken roll flute 10 of circular arc distinguishes the annulus that roll flute 20 lower end root 20a form with corase grind
1Radius
R1 ratio=0.18 ± 0.1:1, the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °, the other end of the broken roll flute 10 of circular arc be lower end 10b can with the inner circle of abrasive disc
3Intersect, shown in accompanying drawing 3 embodiment.
Shown in accompanying drawing 5 embodiment, the lower end 10b of the broken roll flute 10 of circular arc and the inner circle of abrasive disc
3 are notIntersect.
When fracture area 1 radial width larger
,The inner circle of broken roll flute 10 lower end 10b and abrasive disc during the centering angle α of the broken roll flute 10 of circular arc=75 ~ 110 °
3 can notWhen intersecting, the lower end 10b of the broken roll flute 10 of circular arc connects with the tangent or substantially tangent edge of this point and stretches tooth 10c, and the length that tooth 10c is stretched on the edge can be the inner circle with abrasive disc
3Intersect.
The quantity of fracture area 1 roll flute 10 evenly distributes in circumference and offers.
Roll flute 20 surfaces that roll flute 10 surfaces and the corase grind of the utility model fracture area are distinguished become mutually substantially parallel or parallel surface; Roll flute 10 surfaces of fracture area are h=1.5-5mm in tooth 20 surfaces of low corase grind district mill, and roll flute 10 surfaces of fracture area are lower than the size on roll flute 20 surfaces in corase grind district and determine according to the adjustment of abrasive disc diameter.
The general external diameter of the specification of defibrator abrasive disc is in 36 ~ 66 inch size, because the difference of the abrasive disc of every kind of specifications and models design, fracture area 1 length is also different, so the annulus that the lower end root 20a section of corase grind district 2 roll flutes 20 forms
1Radius also is respective change, and the arc radius R of the broken roll flute 10 of fracture area circular arc type is corresponding the variation also, and the radius R size of the broken roll flute 10 of fracture area circular arc type is as follows on the impact that abrasive disc produces:
When 1, fracture area roll flute 10 arc radius R were larger, circular arc was large curved more slow, and crushing teeth 10 and corase grind tooth 20 stressed good uniformities, wearing and tearing are all lighter, but raw material is longer by fracture area road Jing, and the crushing teeth distributed quantity is limited, affects crushing efficiency;
2, fracture area roll flute 10 arc radius R hour, the crushing teeth distributed quantity is limited little, and the many crushing efficiencies of tooth distributed quantity are higher, but the thrust face of circular arc crushing teeth 10 is little, large near corase grind tooth 20 pressure it, easily produce this place's corase grind tooth accelerated wear test.
Specific embodiment fracture area gear grinding parameter situation such as following table:
| Sequence number | Specifications and models | Corase grind sector radius R 1 | Slagging-off groove width b | The crushing teeth radius R | Crushing teeth centering angle α | Be connected with along stretching tooth | Distribution number in the circumference | Remarks |
| 1 | Embodiment 1 | 390 | 15 | 72 | 96° | Have | 24 | ? |
| 2 | Embodiment 2 | 417 | 19 | 80 | 108° | Nothing | 24 | ? |
| 3 | Embodiment 3 | 340 | 10 | 85 | 90° | Have | 16 | ? |
| 4 | Embodiment 4 | 312 | 14 | 85.8 | 110° | Nothing | 16 | ? |
| 5 | Embodiment 5 | 415 | 10 | 85 | 105° | Nothing | 24 | ? |
| 6 | Embodiment 6 | 353 | 0 | 92.8 | 103° | Nothing | 18 | ? |
| 7 | Embodiment 7 | 408 | 20 | 65 | 75° | Have | 36 | ? |
| 8 | Embodiment 8 | 510 | 5 | 83 | 96° | Have | 30 | ? |
Testing result:
Correction data one:
| Specifications and models | The start power consumption | Lower dynamo-electric consumption | Total output | Power consumption/m 3 | Service time | Roll flute damages | Fiber condition |
| Former abrasive disc | 60~65kwh | 90~95kwh | 2727m 3 | 261kwh | 240 hours | Beat tooth | Generally |
| Embodiment 1 | 50~55kwh | 75~80kwh | 3284 m 3 | 221kwh | 264 hours | The slight tooth of beating | Good |
Correction data two
| Specifications and models | The start power consumption | Lower dynamo-electric consumption | Total output | Power consumption/m 3 | Service time | Roll flute damages | Fiber condition |
| Former abrasive disc | 1800kw | 2800kw | 2100 m 3 | 220kwh | 168 hours | Beat tooth | Generally |
| Embodiment 2 | 1200kw | 2400kw | 3120 m 3 | 147kwh | 216 hours | Do not beat tooth | Good |
Correction data three:
| Specifications and models | The start power consumption | Lower dynamo-electric consumption | Total output | Power consumption/m 3 | Service time | Roll flute damages | Fiber condition |
| Former abrasive disc | 55~65kwh | 90~95kwh | 1600 m 3 | 385kwh | 348 hours | Beat tooth | Generally |
| Embodiment 4 | 40~50kwh | 75~80kwh | 2910 m 3 | 356kwh | 571.2 hour | The slight tooth of beating | Good |
Correction data four:
| Specifications and models | The start power consumption | Lower dynamo-electric consumption | Total output | Power consumption/m 3 | Service time | Roll flute damages | Fiber condition |
| Former abrasive disc | 60~65kwh | 85~95kwh | 2232 m 3 | 201kwh | 216 hours | Beat tooth | Generally |
| Embodiment 7 | 45~50kwh | 75~80kwh | 2102 m 3 | 184.7kwh | 209 hours | Do not beat tooth | Good |
Claims (3)
1. defibrator abrasive disc, comprise moving abrasive disc and quiet abrasive disc, abrasive disc constitutes by the monoblock type disk or by the polylith fanning strip, base plate at abrasive disc offers roll flute, roll flute distributes from inside to outside and is divided into three annuluses, be fracture area (1), corase grind district (2) and correct grinding district (3), the roll flute surface in corase grind district (2) becomes constant slope to be connected with the roll flute surface in correct grinding district (3), it is characterized in that:
1) disconnects between fracture area (1) roll flute (10) and corase grind district's (2) roll flute (20), the bottom (20 ') of corase grind district's (2) roll flute (20) is 30-60 ° of chamfering, the annulus that the lower end root (20a) of corase grind district's (2) roll flute (20) forms
The annulus that forms with the upper end (10a) of fracture area (1) roll flute (10)
Spacing b=1-20mm, so between fracture area (1) and corase grind district (2), form the annular buffering except slag chute (B);
2) fracture area (1) roll flute (10) is round-arced tooth, the upper end (10a) of the broken roll flute of circular arc (10) and the interior annulus that removes slag chute (B)
Tangent or substantially tangent, the arc radius R of the broken roll flute of circular arc (10) distinguishes the annulus that roll flute (20) lower end root (20a) forms with corase grind
Ratio=0.18 ± 0.1: 1 of radius R 1, the centering angle α of the broken roll flute of circular arc (10)=75～110 °, the other end of the broken roll flute of circular arc (10) be lower end (10b) can with the inner circle of abrasive disc
Intersect; The quantity of fracture area (1) roll flute (10) evenly distributes in circumference and offers.
2. defibrator abrasive disc according to claim 1 is characterized in that when fracture area (1) radial width is large, the inner circle of abrasive disc
The inner circle of broken roll flute (10) lower end and abrasive disc when the centering angle α of the broken roll flute of circular arc (10)=75～110 ° hour, namely
In the time of can not intersecting, the lower end (10b) of the broken roll flute of circular arc (10) connects with the tangent or substantially tangent edge of this point stretches tooth (10c), and the length that tooth (10c) is stretched on the edge can be the inner circle with abrasive disc
Intersect.
3. defibrator abrasive disc according to claim 1 and 2 is characterized in that roll flute (10) roll flute (20) surface surperficial and that corase grind is distinguished of fracture area becomes mutual substantially parallel or parallel surface; The roll flute of fracture area (10) surface is h=1.5-5mm in tooth (20) surface of low corase grind district mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293369 CN202744877U (en) | 2012-06-21 | 2012-06-21 | Grinding disc of defibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293369 CN202744877U (en) | 2012-06-21 | 2012-06-21 | Grinding disc of defibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202744877U true CN202744877U (en) | 2013-02-20 |
Family
ID=47704301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220293369 Withdrawn - After Issue CN202744877U (en) | 2012-06-21 | 2012-06-21 | Grinding disc of defibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202744877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691220A (en) * | 2012-06-21 | 2012-09-26 | 丹东鸭绿江磨片有限公司 | Grinding slice of defibrator |
-
2012
- 2012-06-21 CN CN 201220293369 patent/CN202744877U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691220A (en) * | 2012-06-21 | 2012-09-26 | 丹东鸭绿江磨片有限公司 | Grinding slice of defibrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130220 Effective date of abandoning: 20150429 |