CN211682637U - Double-drum flaker impeller structure capable of realizing spiral cutting - Google Patents
Double-drum flaker impeller structure capable of realizing spiral cutting Download PDFInfo
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- CN211682637U CN211682637U CN201922127698.4U CN201922127698U CN211682637U CN 211682637 U CN211682637 U CN 211682637U CN 201922127698 U CN201922127698 U CN 201922127698U CN 211682637 U CN211682637 U CN 211682637U
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Abstract
The utility model discloses a can realize helical cutting's double drum flaker impeller structure, including wheel shell, blade and bolt, the wheel shell is formed by wheel ring, wheel slab, axle sleeve, awl lining and a plurality of acanthus leaf welding, the acanthus leaf is radial evenly arranging in wheel ring circumference, the both sides of acanthus leaf respectively with wheel ring, wheel slab welding, install a blade, its characterized in that respectively through the bolt on every acanthus leaf: the blade plate has a certain helical angle, and the end surface of the blade facing the cutter ring is designed into a curved surface, so that the projection of the end surface of the blade on the front view of the blade is a curved line arched towards the cutter ring. The utility model has the advantages that: by designing the end face of the blade into a curved surface, when the blade plate is obliquely arranged, the problem of reduced shaving quality caused by uneven clearance between the end face of the blade and the inner surface of the cutter ring is avoided; meanwhile, the helix angle of the blade can be further increased, so that the advantages of spiral cutting are further exerted, namely, the cutting impact force is reduced, and the cutting energy consumption is reduced.
Description
Technical Field
The utility model belongs to the technical field of timber wood shavings preparation technique and specifically relates to a double drum flaker's impeller structure.
Background
At present, a double-drum flaker is mainly used for processing wood shavings, when the flaker works, an impeller rotates at a high speed, wood chips entering the impeller rapidly flow to the edge of the impeller to reach the inner surface of a cutter ring under the action of centrifugal force, the wood chips and the cutter ring generate high-speed relative rotation under the pushing of blades of the impeller, and flying cutters on the cutter ring continuously shave the wood chips to form shavings. In the process of flying a cutter on a cutter ring to plane wood, the following problems exist: firstly, when the blades push the wood chips to plane on the cutter ring, the length direction of the wood chips is parallel to the cutting edge of the fly cutter, so that the cutting impact is large and the energy consumption is high; secondly, if no auxiliary component is added, wood chips in the planing chamber are not distributed uniformly on the width of the cutter ring, so that the cutter ring is not abraded uniformly, the production efficiency is reduced, the utilization rate of the cutter ring is reduced, and the production cost is increased.
At present, application number CN 207495711U's utility model discloses a put the double drum flaker blade to one side and improve the technical scheme of above-mentioned problem, nevertheless because put the blade to one side and lead to appearing the arch clearance between blade terminal surface and the sword ring inner wall, make sword ring both sides clearance little, the middle clearance is big, cause the clearance between blade terminal surface and the flying knife inhomogeneous at sword ring width direction, reduced the quality of wood shavings.
Disclosure of Invention
For solving the above-mentioned inhomogeneous problem in clearance between the blade terminal surface that produces behind the blade skew and the fly cutter, the utility model provides a can realize helical cutting's double drum flaker impeller structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The utility model provides a can realize double drum flaker impeller structure of spiral cutting, includes wheel shell, blade and bolt, the wheel shell is formed by rim, wheel plate, axle sleeve, awl lining and a plurality of acanthus leaf welding, the acanthus leaf is radial evenly arranged in rim circumference, and the both sides of acanthus leaf weld with rim, wheel plate respectively, its characterized in that, acanthus leaf have certain helix angle theta, and theta is the acute angle that acanthus leaf and impeller axial pressed from both sides. The structure has the beneficial effects that the wood chips are changed from parallel planing to spiral cutting on the cutter ring, so that the cutting impact force is reduced, the cutting energy consumption is reduced, and the cutting quality is improved.
And each blade plate is provided with a blade through a bolt, and the end surface of each blade facing the cutter ring is designed into a curved surface, so that the projection of the end surface of each blade on the front view of each blade is a curved line arched towards the cutter ring.
As a further improvement, the curve formed by the projection of the blade end surface on the front view of the blade is an elliptic curve generated by the chamfered cylinder, and the following equation is satisfied:
wherein R is the radius of the cutter ring, theta is the helical angle, b is the width of the cutter ring, and the blade material pushing surface is superposed with the x-y plane. The structure has the advantages that the arched gap between the end face of the blade and the inner surface of the cutter ring, which is generated because the blade is not parallel to the axis of the cutter ring, is eliminated, so that the blade can better push materials during cutting, and the problem of wood shaving quality reduction caused by the uneven gap between the end face of the blade and the fly cutter is avoided; because the arched clearance generated by the inclined blades is eliminated, the helix angle of the blades can be further increased, and the advantages of spiral cutting are further exerted, namely, the cutting impact force is reduced, the cutting energy consumption is reduced, and the cutting quality is improved.
As a further improvement, the helix angle θ satisfies the following relationship:
b tan θ∈(0，z)
wherein z is the distance between the cutting edges of adjacent cutter teeth on the cutter ring. The beneficial effect of this improvement lies in: the transverse force exerted on the wood chips by the inclined blades is not too large when the double-drum flaker cuts, so that the transverse sliding of the wood chips on the blades is reduced, and the transverse abrasion of the blades is reduced; meanwhile, the smaller transverse force can prevent wood chips from being excessively accumulated at two ends of the width of the cutter ring, so that the cutter ring is more uniformly abraded, and the utilization rate of the cutter ring is improved.
As a further improvement, the inclination directions of the adjacent blades are opposite, namely, any blade is arranged in axial symmetry with the adjacent blade. The beneficial effect of this improvement lies in: the feeding wood chips are uniformly distributed on the width of the cutter ring, so that the uneven wear of the cutter ring is reduced, and the utilization rate of the cutter ring is improved.
To sum up, the beneficial effects of the utility model reside in that: the end face of the blade is designed into a curved surface, so that when a blade plate of the impeller is obliquely arranged, the uniform gap between the end face of the blade and the inner surface of the cutter ring is ensured, and the problem of reduced shaving quality caused by the non-uniform gap between the end face of the blade and the fly cutter is avoided; because the arched clearance generated by the inclined blades is eliminated, the helix angle of the blades can be further increased, and the advantages of spiral cutting are further exerted, namely, the cutting impact force is reduced, the cutting energy consumption is reduced, and the cutting quality is improved; simultaneously the utility model discloses a helix angle size and the direction of optimizing the acanthus leaf make the feeding wood chip distribute evenly on the cutter ring width, improve the cutter ring utilization ratio, reduced manufacturing cost.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a three-dimensional structure of the present invention installed on a knife ring.
Fig. 3 is a front view of the present invention.
Fig. 4 is a left side view of the present invention.
Fig. 5 is a schematic perspective view of a blade plate and a blade according to the present invention.
Fig. 6 is a front view of one blade of the present invention.
Fig. 7 is a schematic view of the impeller structure without the use of the present invention, showing the arcuate clearance between the blade and the cutter ring.
Fig. 8 is a schematic view of the lobe helix angle in view a of fig. 3.
Reference numerals: 1-bolt, 2-leaf plate, 3-blade, 4-wheel ring, 5-wheel plate, 6-axle sleeve, 7-awl lining, 8-impeller, 9-sword ring, 10-the curve that the projection of blade terminal surface formed on the blade main view, 11-sword ring internal surface, 12-do not use the utility model discloses an arch clearance between its blade of impeller structure and the sword ring internal surface, 13-do not use the utility model discloses a projection straight line of its blade terminal surface of impeller structure on blade pushing material face, 14-blade pushing material face place plane and the intersection line of sword ring internal surface, blade pushing material face and x-y plane coincide.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, 2, 3, 4, 5 and 8, the impeller structure of the double-drum flaker capable of realizing spiral cutting comprises a wheel shell, blades 3 and bolts 1, wherein the wheel shell is formed by welding a wheel ring 4, a wheel plate 5, a shaft sleeve 6, a conical liner 7 and a plurality of blade plates 2, the blade plates 2 are uniformly arranged in a radial radiation manner in the circumferential direction of the wheel ring 4, and two sides of the blade plates 2 are respectively welded with the wheel ring 4 and the wheel plate 5, and the impeller structure is characterized in that the blade plates 2 have a certain spiral angle theta, and the theta is an acute angle formed by the installation direction of the blade plates 2 and the axial direction of the impeller 8. The structure has the beneficial effects that the wood chips are changed from parallel planing to spiral planing on the cutter ring 9, so that the cutting impact force is reduced, and the cutting energy consumption is reduced.
As shown in fig. 2, 5 and 6, each vane plate 2 is provided with a vane 3 by a bolt 1, and the end surface of the vane 3 facing the cutter ring 9 is designed to be a curved surface, so that the projection of the vane end surface on the front view of the vane is a curved line 10 arched towards the cutter ring.
As shown in fig. 6 and 7, the curve 10 formed by projecting the end face of the blade on the front view of the blade is an elliptic curve generated by a chamfered cylinder, and the following equation is satisfied:
wherein R is the radius of the cutter ring, theta is the helical angle, b is the width of the cutter ring, and the blade material pushing surface is superposed with the x-y plane.
When the cutter ring radius R is 2m, the helix angle θ is 3 °, and the cutter ring width b is 0.4m, the equation of the curve 10 is:
the structure has the advantages that the arched gap 12 between the end surface of the blade 3 and the inner surface 11 of the knife ring, which is generated because the blade 3 is not parallel to the axis of the knife ring 9, is eliminated, so that the blade 3 can better push materials during cutting, and the problem of wood shaving quality reduction caused by the uneven gap between the end surface of the blade 3 and a fly cutter is avoided; because the arched gap 12 generated by the inclined blade 3 is eliminated, the helix angle of the blade 3 can be further increased, and the advantages of spiral cutting are further exerted, namely, the cutting impact force is reduced, the cutting energy consumption is reduced, and the cutting quality is improved.
As shown in fig. 7 and 8, the helix angle θ should satisfy the following relationship:
b tan θ∈(0，z)
wherein z is the distance between the cutting edges of adjacent cutter teeth on the cutter ring 9.
When the distance z between the cutting edges of the adjacent cutter teeth is 0.05m, and the width b of the cutter ring is 0.4m, the spiral angle theta satisfies the following relation:
0.4tanθ∈(0，0.05)
namely, it is
0＜θ＜7.125°
When the helix angle θ is 3 °, the above relationship is satisfied. The beneficial effect of this improvement lies in: the transverse force applied to the wood chips by the double-drum flaker during the spiral cutting is not too large, so that the transverse slippage of the wood chips on the blades 3 is reduced, and the transverse abrasion of the blades 3 is reduced; meanwhile, the smaller transverse force can prevent wood chips from being excessively accumulated at two ends of the width of the cutter ring 9, so that the cutter ring 9 is more uniformly abraded, and the utilization rate of the cutter ring is improved.
As shown in fig. 1, 4 and 8, the adjacent blades 2 are inclined in opposite directions, i.e. any blade is mounted in axial symmetry with the adjacent blade. The beneficial effect of this improvement lies in: the feeding wood chips are uniformly distributed on the width of the cutter ring 9, the uneven wear of the cutter ring 9 is reduced, and the utilization rate of the cutter ring 9 is improved.
The beneficial effects of the utility model reside in that: the end face of the blade 3 is designed into a curved surface, so that when the blade plate 2 is obliquely arranged, the uniform gap 12 between the end face of the blade 3 and the inner surface 11 of the cutter ring is ensured, and the problem of wood shaving quality reduction caused by the non-uniform gap between the end face of the blade 3 and the fly cutter is avoided; because the arched gap 12 generated by the inclined blade 3 is eliminated, the helix angle of the blade 3 can be further increased, and the advantages of spiral cutting are further exerted, namely, the cutting impact force is reduced, the cutting energy consumption is reduced, and the cutting quality is improved; simultaneously the utility model discloses a size and the direction of the helical angle of optimizing the acanthus leaf make the feeding wood chip distribute evenly on the 9 width of cutter ring, have improved the cutter ring utilization ratio, have reduced manufacturing cost.
It should also be noted that, in this document, the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The utility model provides a can realize double drum flaker impeller structure of helical cutting, includes wheel casing, blade (3) and bolt (1), the wheel casing is formed by rim (4), wheel board (5), axle sleeve (6), awl lining (7) and a plurality of acanthus leaf (2) welding, acanthus leaf (2) are radial evenly arranging in rim (4) week, and the both sides of acanthus leaf (2) weld with rim (4), wheel board (5) respectively, install a blade (3) respectively through bolt (1) on every acanthus leaf (2), its characterized in that: the blade plate (2) has a certain helical angle, and the end surface of the blade (3) facing the cutter ring (9) is designed into a curved surface, so that the projection of the end surface of the blade on a front view of the blade is a curved line (10) arched towards the cutter ring.
2. A double drum flaker impeller structure capable of performing spiral cutting according to claim 1, wherein: the curve (10) formed by the projection of the end surface of the blade on the front view of the blade is an elliptic curve generated by the chamfered cylinder, and the following equation is satisfied:
wherein R is the radius of the cutter ring, theta is the helical angle, b is the width of the cutter ring, and the blade material pushing surface is superposed with the x-y plane.
3. A double drum flaker impeller structure capable of performing spiral cutting according to claim 1, wherein: the helix angle θ satisfies the following relationship:
b tanθ∈(0，z)
wherein z is the distance between the cutting edges of the adjacent cutter teeth on the cutter ring (9).
4. A double drum flaker impeller structure capable of performing spiral cutting according to claim 1, wherein: the inclination directions of the adjacent blades (2) are opposite, namely, any blade is arranged in axial symmetry with the adjacent blade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922127698.4U CN211682637U (en) | 2019-12-02 | 2019-12-02 | Double-drum flaker impeller structure capable of realizing spiral cutting |
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| CN201922127698.4U CN211682637U (en) | 2019-12-02 | 2019-12-02 | Double-drum flaker impeller structure capable of realizing spiral cutting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757609A (en) * | 2019-12-02 | 2020-02-07 | 南京林业大学 | Double-drum flaker impeller structure capable of realizing spiral cutting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757609A (en) * | 2019-12-02 | 2020-02-07 | 南京林业大学 | Double-drum flaker impeller structure capable of realizing spiral cutting |
| CN110757609B (en) * | 2019-12-02 | 2024-07-23 | 南京林业大学 | Impeller structure of double-drum flaker capable of realizing spiral cutting |
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