CN113180500A

CN113180500A - Vertical straight-row grinding cutter set

Info

Publication number: CN113180500A
Application number: CN202110558366.0A
Authority: CN
Inventors: 卢玉霞
Original assignee: Individual
Current assignee: Dongguan Beiyue Hardware Electronics Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-07-30
Anticipated expiration: 2041-05-21
Also published as: CN113180500B

Abstract

The invention discloses a vertical straight-line grinding knife group which comprises an upper grinding knife, an inner grinding knife and a lower grinding knife, wherein the upper grinding knife is annular, and the inner grinding knife is arranged at the upper end of the lower grinding knife and is positioned in the upper grinding knife; a leading-in crushing gap is formed between a first upper grinding tooth groove of the upper grinding cutter and a first inner grinding tooth groove of the inner grinding cutter, an axial grinding gap is formed between a second upper grinding tooth groove of the upper grinding cutter and a second inner grinding tooth groove of the inner grinding cutter, an upper conical tooth on the bottom surface of the upper grinding cutter and a lower conical tooth on the upper surface of the lower grinding cutter are matched in a staggered mode along the radial direction to form a circumferential grinding gap, a powder discharging channel is formed between adjacent upper conical teeth and between adjacent lower conical teeth in the axial grinding gap, and materials enter from the leading-in crushing gap and are discharged from the powder discharging channel after being cut through multiple surfaces of the axial grinding gap and the circumferential grinding gap. This application can realize the guide input of material to coffee granule homogeneity is good, have more tangent plane surfaces, reaches higher grinding quality.

Description

Vertical straight-row grinding cutter set

Technical Field

The invention relates to the technical field of grinding cutters, in particular to a vertical straight-row grinding cutter set.

Background

Coffee is one of daily drinks of people, compared with instant coffee, the freshly ground coffee is prepared by directly grinding coffee beans into coffee powder and then brewing and extracting, is natural in material and easy to control the quality of the coffee beans, and in addition, substances in the coffee are continuously lost along with the lengthening of oxidation time, so that the freshly ground coffee can play a refreshing role.

When the ground coffee is made, firstly, coffee beans are ground into coffee powder, which is generally realized by adopting manual or electric grinding equipment, and a grinding tool is a core component of the grinding equipment, and the particle size, the particle uniformity and the particle shape of the coffee powder can all influence the taste of coffee brewing, so that the grinding tool has higher requirements on the grinding tools for grinding coffee beans and other foods, for example, the publication No. CN201977614U Chinese invention patent discloses a tooth-shaped cutting and forming coffee grinding tool which comprises an upper tool and a lower tool which are made of stainless steel with the specification of SUS420 and are sleeved, wherein the upper tool is annular, the lower tool is provided with a boss sleeved in the upper tool, the lower tool is provided with two-stage grinding teeth with increased density on the boss, and correspondingly, the inner wall of the upper tool is provided with two-stage grinding teeth with increased density opposite to the boss; by adopting the structure that the pair of upper cutter and lower cutter are matched for use and are correspondingly provided with two-stage grinding teeth with gradually increased density, the stainless steel coffee grinding cutter formed by cutting the tooth shapes can solve the rust-proof problem and can meet the powder requirement.

During the use process of the grinding knife, the grinding knife finds that the uniformity of coffee bean cutting particles is poor, the coffee particles are distributed in a sheet shape, the cutting surface is few, and in addition, the coffee particles can not be quickly discharged, so that micro powder particles are generated in the channel through extrusion; in order to solve the technical defects, a grinding cutter head as shown in figures 1 and 2 is adopted, and the grinding cutter head has a multi-layer cutting structure and can quickly discharge cut coffee particles; however, the grinding cutter head feeds materials from the central hole, the grinding cutter head does not have feeding input capacity, a feeding structure needs to be arranged above the central hole, the feeding direction of coffee beans is axial along the central hole, grinding powder discharging channels of the grinding cutter head are radially and outwards distributed along the central hole, the coffee beans and the grinding powder discharging channels are approximately perpendicular to each other, the feeding and the grinding cannot be well matched with each other, and therefore grinding quality and grinding efficiency are affected.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a vertical straight-line grinding cutter set, which can realize material guiding and inputting, ensure that the residence time of coffee particles in the grinding cutter set is in a reasonable interval, has good uniformity of the coffee particles, has more section surfaces and achieves higher grinding quality.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the invention provides a vertical type straight-line grinding knife group which comprises an upper grinding knife, an inner grinding knife and a lower grinding knife, wherein the upper grinding knife is annular, and the inner grinding knife is arranged at the upper end of the lower grinding knife and is positioned in the upper grinding knife;

the inner wall of the upper grinding cutter is sequentially provided with a first upper grinding tooth groove and a second upper grinding tooth groove, the outer wall of the inner grinding cutter is sequentially provided with a first inner grinding tooth groove and a second inner grinding tooth groove corresponding to the first upper grinding tooth groove and the second upper grinding tooth groove, and the bottom surface of the upper grinding cutter and the upper surface of the lower grinding cutter are respectively provided with more than one circle of upper conical teeth and lower conical teeth;

first go up grind the tooth's socket with form leading-in broken clearance between the first interior grinding tooth's socket, grind the tooth's socket on the second with form the axial grinding clearance in the second between the tooth's socket, go up the conical tooth with the conical tooth forms the circumferential direction along radial front and back staggered fit and grinds the clearance down adjacent in the axial grinding clearance between going up the conical tooth, adjacent form between the lower conical tooth and arrange the powder passageway, the material is followed leading-in broken clearance gets into and passes through the axial grinding clearance follow behind the multiaspect cutting of circumferential direction grinding clearance arrange the powder passageway and discharge.

Further, leading-in broken clearance is the back taper distribution from the upper end to the central line slope, the axial grinds clearance the central line slope is the toper distribution from the upper end is kept away from to the circumferential direction grinds clearance, circumferential direction grinds clearance inclination and is greater than the inclination in axial direction grinds clearance.

Furthermore, the bottom surface of the upper grinding cutter and the upper surface of the lower grinding cutter have the same inclination angle, and the upper conical teeth and the lower conical teeth of each circle are correspondingly matched; the upper conical teeth or the lower conical teeth are distributed on the same straight line along the radial direction, and powder discharge channels are formed between the adjacent upper conical teeth and between the adjacent lower conical teeth which are distributed in the radial direction.

Further, the bottom surface of the upper grinding cutter is provided with more than one circle of upper conical teeth around the inner grinding cutter, an upper annular grinding channel is formed between two adjacent circles of upper conical teeth along the circumferential direction, the upper surface of the lower grinding cutter is correspondingly provided with more than one circle of lower conical teeth around the inner grinding cutter, and a lower annular grinding channel is formed between two adjacent circles of lower conical teeth along the circumferential direction; each circle of upper conical teeth is embedded with the corresponding lower annular grinding channel, and each circle of lower conical teeth is embedded with the corresponding upper annular grinding channel.

Further, an upper powder discharging channel is formed between every two adjacent radially-distributed upper conical teeth and is communicated with each upper annular grinding channel along the radial direction; and a lower powder discharge channel is formed between the adjacent radially-distributed lower conical teeth and is communicated with each lower annular grinding channel along the radial direction.

Optionally, the upper powder discharge channel is distributed in an involute spiral manner with the inner grinding cutter as a center, and the lower powder discharge channel is distributed in an involute spiral manner with the inner grinding cutter as a center.

Furthermore, each upper conical tooth is in a tetrahedral pyramid shape and comprises an upper first side sawtooth surface and an upper second side sawtooth surface which are oppositely arranged along the circumferential direction, and an upper front trapezoidal tooth surface and an upper rear trapezoidal tooth surface which are arranged in front and at back along the radial direction; the upper powder discharging channel is formed between the upper first side sawtooth surface and the upper second side sawtooth surface which are adjacent in the circumferential direction, and the upper annular grinding channel is formed between the upper front trapezoidal tooth surface and the upper rear trapezoidal tooth surface which are adjacent in the radial direction;

each lower conical tooth is in a tetrahedral pyramid shape and comprises a lower first side sawtooth surface and a lower second side sawtooth surface which are oppositely arranged along the circumferential direction, and a lower front trapezoidal tooth surface and a lower rear trapezoidal tooth surface which are arranged in a front-back manner along the radial direction; the lower powder discharge channel is formed between the circumferentially adjacent lower first side sawtooth surface and the lower second side sawtooth surface, and the lower annular grinding channel is formed between the radially adjacent lower front trapezoidal tooth surface and the lower rear trapezoidal tooth surface.

Further, the upper front trapezoidal tooth surface of each upper conical tooth is distributed in an inclined manner towards the central axis, and correspondingly, the lower front trapezoidal tooth surface of each lower conical tooth is distributed in an inclined manner towards the central axis.

Furthermore, the lower end of the second upper grinding tooth socket is provided with an upper transition ring surface, an upper transition groove is arranged in the upper transition ring surface corresponding to each upper powder discharge channel, and the upper transition grooves are correspondingly communicated with the upper powder discharge channels; a lower transition ring inclined plane is arranged on the lower grinding cutter corresponding to the upper transition ring surface, a lower transition groove is arranged in the lower transition ring inclined plane corresponding to each lower powder discharge channel, one end of each lower transition groove extends to the connecting position of the inner grinding cutter and the lower grinding cutter, and the other end of each lower transition groove is correspondingly communicated with the lower powder discharge channel.

Furthermore, an upper edge ring surface is arranged on the edge of the lower end of the bottom surface of the upper grinding knife, a lower edge ring surface is arranged on the edge of the lower end of the upper surface of the lower grinding knife, the upper powder discharging channel penetrates through the upper edge ring surface, the lower powder discharging channel penetrates through the lower edge ring surface, and the upper edge ring surface and the lower edge ring surface are correspondingly matched.

Furthermore, the first upper grinding tooth socket is inclined from the upper end to the central line and distributed in an inverted cone shape, the first upper grinding tooth socket is composed of a plurality of triangular grinding teeth, and each triangular grinding tooth comprises a first triangular tooth surface and a second triangular tooth surface which are inclined from the upper end to the central line and distributed in an inverted cone shape; the second upper grinding tooth groove is inclined from the upper end to be away from the central line and distributed in a conical shape, the second upper grinding tooth groove is composed of a plurality of trapezoidal arc-shaped teeth, and each trapezoidal arc-shaped tooth comprises a first convex arc-shaped tooth surface and a second convex arc-shaped tooth surface which are inclined from the upper end to be away from the central line and distributed in a conical shape and are inclined in the circumferential direction;

optionally, the upper end and the lower end of the first convex arc-shaped tooth surface and the second convex arc-shaped tooth surface are respectively provided with a trapezoidal tooth surface.

Further, the first internal grinding tooth groove is inclined from the upper end to the center line in a conical distribution, and consists of a plurality of spiral grinding teeth, and each spiral grinding tooth comprises a first spiral tooth surface and a second spiral tooth surface which are inclined from the upper end to the center line in a conical distribution; grind the tooth's socket in the second and begin to keep away from the central line slope from the upper end and be the toper and distribute, grind the tooth's socket in the second and comprise a plurality of triangle arc tooth, each triangle arc tooth is including beginning to keep away from the central line slope from the upper end and be the first concave arc flank, the second concave arc flank that the conical distribution just inclines in circumferencial direction.

Optionally, the lower extreme of triangle arc tooth is provided with slope triangle surface respectively, slope triangle surface extends to interior grinding sword base edge.

Optionally, the spiral direction of the spiral grinding tooth is the same as the inclination direction of the first triangular tooth face or the second triangular tooth face in the first upper grinding tooth slot. The spiral direction of the spiral grinding teeth is the same as the inclined direction of the trapezoidal arc-shaped teeth of the second upper grinding tooth socket and the inclined direction of the triangular arc-shaped teeth of the second inner grinding tooth socket.

By adopting the technical scheme, the vertical type straight-line grinding cutter group provided by the embodiment of the invention has the advantages that the guide crushing gap with spiral feeding is formed between the middle inner wall of the upper grinding cutter and the upper part of the inner grinding cutter, the axial grinding gap for axial cutting and grinding is formed between the lower part of the upper grinding cutter and the inner grinding cutter, the circumferential grinding gap for circumferential cutting and grinding is formed between the bottom surface of the upper grinding cutter and the lower grinding cutter, and a plurality of straight-through powder discharge channels are formed between the bottom surface of the upper grinding cutter and the lower grinding cutter; coffee beans are down rolled up by the spiral and are sent by the extrusion breakage simultaneously at leading-in broken clearance, grind clearance and circumference and grind the clearance in circumference and carry out multi-angle multiaspect cutting, arrange the powder clearance setting between the toper tooth, the coffee granule after the switching falls into immediately and arranges the quick discharge in powder clearance, the coffee granule is short at the interior detention time of grinding knife tackle, avoid mutual extrusion and produce coffee powder with the extrusion of cutter inner wall, obtain and have polyhedral shape and the even coffee granule of size.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a top view of a conventional grinding pan assembly;

FIG. 2 is a front view of a conventional grinding disc assembly;

FIG. 3 is a front view of the vertical in-line grinding blade assembly of the present invention;

FIG. 4 is a top view of the vertical in-line grinding blade assembly of the present invention;

FIG. 5 is a bottom view of the vertical inline grinding blade assembly of the present invention;

FIG. 6 is a sectional view of the section A-A in FIG. 4;

FIG. 7 is a three-dimensional block diagram of the vertical in-line grinding blade assembly of the present invention;

FIG. 8 is a three-dimensional exploded view of the vertical in-line grinding blade assembly of the present invention;

FIG. 9 is a three-dimensional block diagram of the upper grinding blade of the present invention;

FIG. 10 is a bottom view of the upper grinding blade of the present invention;

FIG. 11 is a front view of the inner and lower grinding blades of the present invention;

FIG. 12 is a top view of the inner and lower grinding knives of the present invention;

FIG. 13 is a three-dimensional block diagram of the inner and lower grinding knives of the present invention;

FIG. 14 is a three-dimensional structural view of an inner milling cutter of the present invention;

FIG. 15 is a view showing a fitting relationship among the upper grinding blade, the inner grinding blade and the lower grinding blade according to the present invention;

FIG. 16 is a schematic cross-sectional view of a powder discharge passage according to the present invention;

in the figure, 10-upper grinding cutter, 11-fixed boss, 12-first upper grinding tooth socket, 121-triangular grinding tooth, 122-first triangular tooth face, 123-second triangular tooth face, 13-second upper grinding tooth socket, 131-trapezoidal arc tooth, 132-first convex arc tooth face, 133-second convex arc tooth face, 134-trapezoidal tooth surface, 14-upper transition ring face, 15-upper transition groove, 16-upper conical tooth, 161-upper first side sawtooth face, 162-upper second side sawtooth face, 163-upper front trapezoidal tooth face, 164-upper rear trapezoidal tooth face, 17-upper powdering channel, 18-upper annular grinding channel, 19-upper edge ring face;

20-inner grinding cutter, 21-inner shaft hole, 22-inner mounting pin hole, 23-first inner grinding tooth groove, 231-spiral grinding tooth, 232-first spiral tooth surface, 233-second spiral tooth surface, 24-second inner grinding tooth groove, 241-triangular arc tooth, 242-first concave arc tooth surface, 243-second concave arc tooth surface, 244-inclined triangular surface and 25-inner grinding cutter base;

30-lower grinding cutter, 31-lower shaft hole, 32-lower mounting pin hole, 33-bearing table top, 34-lower transition ring inclined plane, 35-lower transition groove, 36-lower conical tooth, 361-lower first side sawtooth surface, 362-lower second side sawtooth surface, 363-lower front trapezoidal tooth surface, 364-lower rear trapezoidal tooth surface, 37-lower powder discharge channel, 38-lower annular grinding channel, 39-lower edge ring surface, 310-lower grinding base and 311-fixed mounting hole.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 3 to 8, an embodiment of the present invention provides a vertical inline grinding blade set, including an upper grinding blade 10, an inner grinding blade 20, and a lower grinding blade 30, where the upper grinding blade 10 is annular, and the inner grinding blade 20 is mounted at the upper end of the lower grinding blade 30 and is located in the upper grinding blade 10;

a first upper grinding tooth groove 12 and a second upper grinding tooth groove 13 are sequentially arranged on the inner wall of the upper grinding cutter 10, a first inner grinding tooth groove 23 and a second inner grinding tooth groove 24 are sequentially arranged on the outer wall of the inner grinding cutter 20 corresponding to the first upper grinding tooth groove 12 and the second upper grinding tooth groove 13, and more than one circle of upper conical teeth 16 and lower conical teeth 36 are respectively arranged on the bottom surface of the upper grinding cutter 10 and the upper surface of the lower grinding cutter 30;

first upper grinding tooth's socket 12 with form leading-in broken clearance between the first interior grinding tooth's socket 23, grind tooth's socket 13 on the second with form the axial grinding clearance in the second between grinding tooth's socket 24, go up conical tooth 16 with conical tooth 36 forms the circumferential direction along radial front and back staggered fit and grinds the clearance down adjacent in the axial grinding clearance between last conical tooth 16, adjacent form the row powder passageway between the lower conical tooth 36, the material is followed leading-in broken clearance gets into and warp the axial grinding clearance follow behind the multiaspect cutting of circumferential direction grinding clearance row powder passageway discharges.

Specifically, the leading-in crushing gap is inclined from the upper end to the central line and distributed in an inverted cone shape, and the inclination angle with the central line can be 10-20 degrees, and is preferably 15 degrees; the axial grinding gap and the circumferential grinding gap are distributed in a conical manner from the upper end to the center line in an inclined manner, and the inclined angle of the circumferential grinding gap is larger than that of the axial grinding gap. The inclination of the axial grinding gap to the horizontal plane may be 50-70 degrees, preferably 60 degrees, and the inclination of the circumferential grinding gap to the horizontal plane may be 10-20 degrees, preferably 15 degrees. As shown in fig. 15, the introduction crushing gap has a structure that the upper end is wide and the lower end is narrow, coffee beans enter from the upper end of the introduction crushing gap, are crushed by the first upper grinding tooth groove 12 and the first inner grinding tooth groove 23 and spirally enter from the lower end of the introduction crushing gap into the axial grinding gap and the circumferential grinding gap, due to the transitional arrangement of the inclination angle, coffee particles are not blocked among the introduction crushing gap, the axial grinding gap and the circumferential grinding gap to cause the coffee particles to be excessively extruded into coffee powder, and the directions of the cutting structures of the cutters in the axial grinding gap and the circumferential grinding gap are different, so that the coffee beans are subjected to multi-layer multi-surface cutting processing, and the coffee particles are in a polyhedral structure.

As shown in fig. 6, the bottom surface of the upper grinding blade 10 and the upper surface of the lower grinding blade 30 have the same inclination angle, and the upper conical teeth 16 of each circle are correspondingly matched with the lower conical teeth 36; the upper conical teeth 16 or the lower conical teeth 36 are distributed on the same straight line along the radial direction, and powder discharging channels are formed between the adjacent upper conical teeth 16 distributed in the radial direction and between the adjacent lower conical teeth 36 distributed in the radial direction.

Specifically, as shown in fig. 9, the bottom surface of the upper grinding blade 10 is provided with more than one circle (3 circles as shown in fig. 10) of the upper conical teeth 16 around the inner grinding blade 20, an upper annular grinding channel 18 is formed between two adjacent circles of the upper conical teeth 16 along the circumferential direction, the upper surface of the lower grinding blade 30 is correspondingly provided with more than one circle (3 circles as shown in fig. 12) of the lower conical teeth 36 around the inner grinding blade 30, and a lower annular grinding channel 38 is formed between two adjacent circles of the lower conical teeth 36 along the circumferential direction; each ring of the upper conical teeth 16 is engaged with the corresponding lower annular grinding channel 38, and each ring of the lower conical teeth 36 is engaged with the corresponding upper annular grinding channel 18. The upper conical teeth 16 are arranged in a multi-circle annular array in the bottom surface of the upper grinding cutter 10, similarly, the lower conical teeth 36 are arranged in a multi-circle annular array in the bottom surface of the lower grinding cutter 30, and the number of teeth of the annular array of the upper conical teeth 16 and the annular array of the lower conical teeth 36 is 40-60; when the upper and lower grinding

knives

10 and 30 are engaged, the lower grinding knife 30 can rotate without a gap from the bottom surface of the upper grinding knife 10.

As shown in fig. 8, an upper powder discharge passage 17 is formed between adjacent radially-distributed upper conical teeth 16, and the upper powder discharge passage 17 is communicated with each upper annular grinding passage 18 along the radial direction; a lower powder discharge passage 37 is formed between the radially distributed adjacent lower conical teeth 36, and the lower powder discharge passage 37 is communicated with each lower annular grinding passage 38 along the radial direction. The upper powder discharge channel 17 and the lower powder discharge channel 37 are in the shape of grooves, and as shown in fig. 16, the cross section of the powder discharge channel can be in various forms such as V-shaped, trapezoidal, arc-shaped, rectangular and the like.

Optionally, the upper powder discharge passage 17 is spirally distributed in an involute manner with the inner grinding cutter 20 as a center, and the lower powder discharge passage 27 is spirally distributed in an involute manner with the inner grinding cutter 20 as a center.

When in use, coffee particles are cut in the upper annular grinding channel 18 and the lower annular grinding channel 38 in the circumferential direction and then fall into the upper powder discharging channel 17 and the lower powder discharging channel 37, because the upper powder discharging channel 17 and the lower powder discharging channel 37 are arranged in an inclined manner, and the powder discharging channel 17 and the lower powder discharging channel 37 are in straight-through type and are spirally distributed in an involute manner by taking the grinding cutter 20 as the center, under the action of a rotating centrifugal force, the coffee particles can be quickly discharged from the tail end and cannot be retained between the cutters, each circle of conical teeth 16 is embedded with the corresponding lower annular grinding channel 38, each circle of lower conical teeth 36 is embedded with the corresponding upper annular grinding channel 18, namely the upper conical teeth 16 are scraped in the lower annular grinding channel 38, the lower conical teeth 36 are scraped in the upper annular grinding channel 18, and when the upper conical teeth 16 and the lower conical teeth 36 rotate relatively, all coffee particles are scraped in the powder discharging channel, and the material is quickly discharged under the action of centrifugal force.

As shown in fig. 9, each of the upper tapered teeth 16 is in a tetrahedral pyramid shape, and includes an upper first side serrated surface 161 and an upper second side serrated surface 162 which are oppositely arranged along the circumferential direction, and an upper front trapezoidal tooth surface 163 and an upper rear trapezoidal tooth surface 164 which are arranged back and forth along the radial direction; the upper powder discharge channel 17 is formed between the circumferentially adjacent upper first side serrated face 161 and the upper second side serrated face 162, and the upper annular grinding channel 18 is formed between the radially adjacent upper front trapezoidal tooth face 163 and the upper rear trapezoidal tooth face 164;

as shown in fig. 13, each of the lower tapered teeth 36 is in a tetrahedral pyramid shape, and includes a lower first side serrated surface 361 and a lower second side serrated surface 362 which are oppositely arranged along the circumferential direction, and a lower front trapezoidal tooth surface 363 and a lower rear trapezoidal tooth surface 364 which are arranged back and forth along the radial direction; the lower powder discharge channel 37 is formed between the circumferentially adjacent lower first side serrated surface 361 and the lower second side serrated surface 362, and the lower annular grinding channel 38 is formed between the radially adjacent lower front trapezoidal tooth surface 363 and the lower rear trapezoidal tooth surface 364.

Optionally, the upper front trapezoidal tooth surface 163 of each upper conical tooth 16 is distributed obliquely to the central axis, and correspondingly, the lower front trapezoidal tooth surface 363 of each lower conical tooth 36 is distributed obliquely to the central axis. Alternatively, the upper front trapezoidal tooth face 163 of each of the upper tapered teeth 16 is obliquely distributed away from the central axis, and correspondingly, the lower front trapezoidal tooth face 363 of each of the lower tapered teeth 36 is obliquely distributed away from the central axis. The upper front trapezoidal tooth surface 163 and the lower front trapezoidal tooth surface 363 have the same inclination angle, the inclination angle is preferably 60 degrees, and since the intersection of the upper front trapezoidal tooth surface 163 and the lower first side serrated surface 361 and the lower second side serrated surface 362 and the intersection of the lower front trapezoidal tooth surface 363 and the lower first side serrated surface 361 and the lower second side serrated surface 362 form a circumferential cutting edge, the inclination enables the length of the circumferential cutting edge to be increased, and the cutting is sufficiently increased.

As shown in fig. 9, an upper transition ring surface 14 is disposed at the lower end of the second upper grinding tooth socket 13, an upper transition groove 15 is disposed in the upper transition ring surface 14 corresponding to each upper row of powdering channels 17, and the upper transition groove 15 is correspondingly communicated with the upper row of powdering channels 17; as shown in fig. 12, a lower transition ring inclined surface 34 is provided on the lower grinding cutter 30 corresponding to the upper transition ring surface 14, a lower transition groove 35 is provided in the lower transition ring inclined surface 34 corresponding to each lower powder discharge channel 37, one end of the lower transition groove 35 extends to a connection position of the inner grinding cutter 20 and the lower grinding cutter 30, and the other end is correspondingly communicated with the lower powder discharge channel 37.

Optionally, the upper powder discharge channel 17 and the upper transition groove 15 are integrally formed and are on the same straight line; the lower powder discharging channel 37 and the lower transition groove 35 are integrally formed and are on the same straight line. Through last transition anchor ring 14, lower transition ring inclined plane 34 make the coffee granule in the axial grinding clearance smoothly fall into the circumference grinding clearance in, because the less coffee granule of centrifugal force effect can fall into earlier between transition anchor ring 14, the lower transition ring inclined plane 34, through last cross the aqueduct 15, in lower aqueduct 35 can directly enter into last powder discharge channel 17 or lower powder discharge channel 37, discharge fast through centrifugal force, avoid excessively grinding into coffee powder.

Optionally, an upper edge ring surface 19 is disposed on the lower end edge of the bottom surface of the upper grinding cutter 10, a lower edge ring surface 310 is disposed on the lower end edge of the upper surface of the lower grinding cutter 30, the upper powder discharge channel 17 penetrates through the upper edge ring surface 19, the lower powder discharge channel 37 penetrates through the lower edge ring surface 310, and the upper edge ring surface 19 and the lower edge ring surface 310 are correspondingly matched. The upper edge ring surface 19 and the lower edge ring surface 310 serve as edges for fastening the bottom surface of the upper grinding blade 10 and the lower grinding blade 30, and when the upper edge ring surface 19 and the lower edge ring surface 310 are attached, the ends of the upper discharge passage 17 and the lower discharge passage 37 are disposed at the edges to form a plurality of discharge holes formed in the cross section as shown in fig. 16.

As shown in fig. 8 and 9, the first external grinding tooth grooves 12 are inclined from the upper end to the center line and distributed in a reverse taper shape, and the first external grinding tooth grooves 12 are composed of a plurality of triangular grinding teeth 121, and each of the triangular grinding teeth 121 includes a first triangular tooth surface 122 and a second triangular tooth surface 123 inclined from the upper end to the center line and distributed in a reverse taper shape. Alternatively, the first triangular tooth surface 122 and the second triangular tooth surface 123 intersect to form a tooth edge, and the cross section of the triangular grinding tooth 121 may be a right triangle, etc. As shown in fig. 7, the second outer grinding tooth socket 13 is inclined from the upper end to be away from the center line in a tapered distribution, the second outer grinding tooth socket 13 is composed of a plurality of trapezoidal arc-shaped teeth 131, each trapezoidal arc-shaped tooth 131 includes a first convexly-arc-shaped tooth surface 132 and a second convexly-arc-shaped tooth surface 133 which are inclined from the upper end to be away from the center line in a tapered distribution and in a circumferential direction, and the grinding and pulverizing passage is formed between the adjacent first convexly-arc-shaped tooth surface 132 and the second convexly-arc-shaped tooth surface 133.

Specifically, trapezoidal tooth surfaces 134 are respectively arranged at the upper end and the lower end of the first convex arc-shaped tooth surface 132 and the second convex arc-shaped tooth surface 133, and the grinding and crushing channel is communicated with the powder discharge gap 14.

As shown in fig. 8, the first internal grinding tooth slot 23 is inclined from the upper end to be away from the center line and is distributed in a tapered shape, the first internal grinding tooth slot 23 is composed of a plurality of spiral grinding teeth 231, each spiral grinding tooth 231 comprises a first spiral tooth surface 232 and a second spiral tooth surface 233 which are inclined from the upper end to be away from the center line and are distributed in a tapered shape, and the leading-in crushing channel is formed between the adjacent first spiral tooth surface 232 and the second spiral tooth surface 233.

Optionally, a helical tooth edge face is formed between the first helical tooth face 232 and the second helical tooth face 233, and the inclined directions of the first inner grinding tooth groove 23 and the first outer grinding tooth groove 12 are different, so that the gap leading into the crushing channel is wide at the top and narrow at the bottom, and the material crushing is facilitated.

As shown in fig. 8, 11-13, the second internal grinding tooth slot 24 is inclined from the upper end away from the center line in a tapered distribution, and the second internal grinding tooth slot 24 is composed of a plurality of triangular arc-shaped teeth 241, each of the triangular arc-shaped teeth 241 includes a first concave arc-shaped tooth surface 242 and a second concave arc-shaped tooth surface 243 inclined from the upper end away from the center line in a tapered distribution and in a circumferential direction. Specifically, the lower ends of the triangular arc-shaped teeth 241 are respectively provided with an inclined triangular surface 244, and the inclined triangular surfaces 244 extend to the edge of the inner grinding cutter base 25.

Alternatively, the spiral direction of the spiral grinding tooth 231 is the same as the inclination direction of the first triangular tooth face 122 or the second triangular tooth face 123 in the first external grinding tooth slot 12. The spiral direction of the spiral grinding teeth 231 is the same as the inclined direction of the trapezoidal arc-shaped teeth 131 of the second outer grinding tooth groove 13 and the inclined direction of the triangular arc-shaped teeth 241 of the second inner grinding tooth groove 24.

Optionally, the number of first outer grinding tooth slots 12 is smaller than the number of second outer grinding tooth slots 13, the number of first inner grinding tooth slots 23 is smaller than the number of second inner grinding tooth slots 24, and the first inner grinding tooth slots 23 may be composed of 5 or 6 spiral grinding teeth 231.

Optionally, the trapezoidal arc-shaped teeth 131 of the second outer grinding tooth groove 13 are outwardly convex along the center line and the triangular arc-shaped teeth 241 of the second inner grinding tooth groove 24 are inwardly concave along the center line, so that the gap between the upper ends of the second outer grinding tooth groove 13 and the second inner grinding tooth groove 24 is formed to be smaller than the gap between the middle and lower ends of the second outer grinding tooth groove 13 and the second inner grinding tooth groove 24. Alternatively, the trapezoidal arc-shaped teeth 131 of the second outer grinding tooth groove 13 and the triangular arc-shaped teeth 241 of the second inner grinding tooth groove 24 are both concave inward or concave outward along the center line and have different arcs, so that the gap between the upper ends of the second outer grinding tooth groove 13 and the second inner grinding tooth groove 24 is smaller than the gap between the middle and lower ends of the second outer grinding tooth groove 13 and the second inner grinding tooth groove 24. When hard foreign materials (grit, metal chips, etc.) fall into the upper end of the grinding and pulverizing passage, the foreign materials may damage the second upper grinding tooth groove 13 and the second inner grinding tooth groove 24 at the upper end due to the rotational movement of the inner grinding blade 20 with respect to the upper grinding blade 10, thereby increasing the gap, if the gap distance between the second upper grinding tooth groove 13 and the second inner grinding tooth groove 24 is the same, the influence of the damage of the second upper grinding tooth groove 13 and the second inner grinding tooth groove 24 cannot be eliminated no matter how the relative positions of the inner grinding blade 20 and the upper grinding blade 10 are adjusted, when the gap at the upper ends of the second upper grinding tooth groove 13 and the second inner grinding tooth groove 24 is smaller than the gap between and at the lower ends of the second upper grinding tooth groove 13 and the second inner grinding tooth groove 24, the gap can be maintained relatively stable by shortening the length by finely adjusting the distance between the inner grinding blade 20 and the upper grinding blade 10, and the second upper grinding gullet 13 and the second inner grinding gullet 24 are not subjected to contact interference, so that the grinding cutter set can continuously work.

As shown in fig. 3, the upper end of the upper grinding cutter 10 is further provided with a fixing boss 11 for fixed installation, an inner shaft hole 21 is arranged in the middle of the inner grinding cutter 20, the first inner grinding tooth groove 23 and the second inner grinding tooth groove 24 are arranged around the inner shaft hole 21, a lower shaft hole 31 is arranged in the middle of the lower grinding cutter 30, the lower shaft hole 31 penetrates through the bottom surface of the lower grinding base 311, and the inner shaft hole 21 and the lower shaft hole 31 have the same aperture and are correspondingly communicated.

Optionally, a receiving table 33 is disposed in the middle of the lower grinding cutter 30, the inner grinding cutter base 25 is correspondingly disposed on the receiving table 33, as shown in fig. 14, a plurality of inner mounting pin holes 22 are disposed on the bottom surface of the inner grinding cutter base 25, and a plurality of lower mounting pin holes 32 are disposed correspondingly on the receiving table 33; the inner grinding blade 20 and the lower grinding blade 30 may be connected by a plurality of pins, or the inner grinding blade 20 and the lower grinding blade 10 may be integrally formed. The upper milling cutter 10, the inner milling cutter 20 and the lower milling cutter 30 are made of metal materials, such as tool steel and stainless steel.

Optionally, a fixing and mounting hole 312 is further disposed on the bottom surface of the lower grinding base 311, when in use, the power shaft is connected with and drives the lower grinding cutter 30 and the inner grinding cutter 20 to rotate relative to the upper grinding cutter 10 through the inner shaft hole 21, the lower shaft hole 31 and the fixing and mounting hole 312, the upper grinding cutter 10 is fixedly mounted in the device through the fixing boss 11, and the relative positions of the upper grinding cutter 10, the inner grinding cutter 20 and the lower grinding cutter 30 can be adjusted by adjusting the relative position of the fixing boss 11 in the device or adjusting the relative position of the power shaft, so that the sizes of the introduced crushing gap, the axial grinding gap and the circumferential grinding gap are adjusted.

According to the vertical type straight-line grinding cutter set provided by the embodiment of the invention, a guide crushing gap with spiral feeding is formed between the middle inner wall of the upper grinding cutter and the upper part of the inner grinding cutter, an axial grinding gap for axial cutting and grinding is formed between the lower part of the upper grinding cutter and the inner grinding cutter, a circumferential grinding gap for circumferential cutting and grinding is formed between the bottom surface of the upper grinding cutter and the lower grinding cutter, and a plurality of straight-through powder discharge channels are formed between the bottom surface of the upper grinding cutter and the lower grinding cutter; coffee beans are down rolled up by the spiral and are sent by the extrusion breakage simultaneously at leading-in broken clearance, grind clearance and circumference and grind the clearance in circumference and carry out multi-angle multiaspect cutting, arrange the powder clearance setting between the toper tooth, the coffee granule after the switching falls into immediately and arranges the quick discharge in powder clearance, the coffee granule is short at the interior detention time of grinding knife tackle, avoid mutual extrusion and produce coffee powder with the extrusion of cutter inner wall, obtain and have polyhedral shape and the even coffee granule of size.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

In the description of the present patent application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "row", "column", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of describing and simplifying the present patent application, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the novel aspects of the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present patent application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the patent of the invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "fixed", and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present patent can be understood by those skilled in the art according to specific situations.

In the patent of the invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Claims

1. A vertical straight-row grinding knife group is characterized by comprising an upper grinding knife, an inner grinding knife and a lower grinding knife, wherein the upper grinding knife is annular, and the inner grinding knife is arranged at the upper end of the lower grinding knife and is positioned in the upper grinding knife;

2. The vertical in-line grinding tool set according to claim 1, wherein the leading crushing gap is inclined from the upper end to the center line in an inverted conical distribution, the axial grinding gap and the circumferential grinding gap are inclined from the upper end to the center line in a conical distribution, and the inclination angle of the circumferential grinding gap is larger than that of the axial grinding gap.

3. The vertical in-line grinding blade set of claim 1, wherein the bottom surface of the upper grinding blade has the same inclination angle as the upper surface of the lower grinding blade, and the upper conical teeth of each circle are correspondingly engaged with the lower conical teeth; the upper conical teeth or the lower conical teeth are distributed on the same straight line along the radial direction, and powder discharge channels are formed between the adjacent upper conical teeth and between the adjacent lower conical teeth which are distributed in the radial direction.

4. The vertical in-line grinding tool set according to claim 3, wherein the bottom surface of the upper grinding tool is provided with more than one circle of upper conical teeth around the inner grinding tool, an upper annular grinding channel is formed between two adjacent circles of upper conical teeth along the circumferential direction, the upper surface of the lower grinding tool is correspondingly provided with more than one circle of lower conical teeth around the inner grinding tool, and a lower annular grinding channel is formed between two adjacent circles of lower conical teeth along the circumferential direction; each circle of upper conical teeth is embedded with the corresponding lower annular grinding channel, and each circle of lower conical teeth is embedded with the corresponding upper annular grinding channel.

5. The vertical in-line grinding tool set according to claim 4 wherein an upper row of grinding channels is formed between adjacent radially disposed upper conical teeth, said upper row of grinding channels communicating radially with each of said upper annular grinding channels; and a lower powder discharge channel is formed between the adjacent radially-distributed lower conical teeth and is communicated with each lower annular grinding channel along the radial direction.

6. The vertical in-line grinding tool set according to claim 5, wherein each of the upper conical teeth is in a tetrahedral pyramid shape and comprises an upper first side serrated face and an upper second side serrated face which are oppositely arranged along the circumferential direction, and an upper front trapezoidal tooth face and an upper rear trapezoidal tooth face which are arranged in front and behind along the radial direction; the upper powder discharging channel is formed between the upper first side sawtooth surface and the upper second side sawtooth surface which are adjacent in the circumferential direction, and the upper annular grinding channel is formed between the upper front trapezoidal tooth surface and the upper rear trapezoidal tooth surface which are adjacent in the radial direction;

7. The vertical in-line grinding blade set of claim 6 wherein said upper front trapezoidal face of each said upper conical tooth is obliquely oriented toward the central axis and correspondingly said lower front trapezoidal face of each said lower conical tooth is obliquely oriented toward the central axis.

8. The vertical in-line grinding cutter set according to claim 4, wherein the lower end of the second upper grinding gullet is provided with an upper transition ring surface, an upper transition groove is arranged in the upper transition ring surface corresponding to each upper grinding passage, and the upper transition groove is correspondingly communicated with the upper grinding passage; a lower transition ring inclined plane is arranged on the lower grinding cutter corresponding to the upper transition ring surface, a lower transition groove is arranged in the lower transition ring inclined plane corresponding to each lower powder discharge channel, one end of each lower transition groove extends to the connecting position of the inner grinding cutter and the lower grinding cutter, and the other end of each lower transition groove is correspondingly communicated with the lower powder discharge channel;

the lower end edge of the bottom surface of the upper grinding knife is provided with an upper edge ring surface, the lower edge of the upper surface of the lower grinding knife is provided with a lower edge ring surface, the upper powder discharging channel penetrates through the upper edge ring surface, the lower powder discharging channel penetrates through the lower edge ring surface, and the upper edge ring surface and the lower edge ring surface are correspondingly matched.

9. The vertical in-line grinding tool set according to claim 1 wherein the first upper grinding gullet is inclined from the upper end to the center line in a back-tapered distribution, the first upper grinding gullet being comprised of a plurality of triangular grinding teeth each including a first triangular flank, a second triangular flank inclined from the upper end to the center line in a back-tapered distribution; grind the gullet and begin to keep away from the central line slope from the upper end and be the toper distribution on the second, grind the gullet and comprise a plurality of trapezoidal arc tooth on the second, each trapezoidal arc tooth is including beginning to keep away from the upper end that the central line slope is the first convex arc flank, the second convex arc flank that the conical distribution just inclines in circumferencial direction.

10. The vertical in-line grinding tool set of claim 9 wherein the first internal grinding gullet is tapered from the upper end away from the centerline, the first internal grinding gullet being comprised of a plurality of helical grinding teeth, each of the helical grinding teeth including a first helical tooth face and a second helical tooth face tapered from the upper end away from the centerline; grind the tooth's socket in the second and begin to keep away from the central line slope from the upper end and be the toper and distribute, grind the tooth's socket in the second and comprise a plurality of triangle arc tooth, each triangle arc tooth is including beginning to keep away from the central line slope from the upper end and be the first concave arc flank, the second concave arc flank that the conical distribution just inclines in circumferencial direction.