CN217447409U - Be applied to grinding tool assembly on coffee machine - Google Patents

Abstract

The utility model relates to a coffee machine accessory field indicates a grinding tool subassembly of being applied to on coffee machine especially. Comprises a cylindrical outer grinding wheel and a conical inner grinding wheel; the outer grinding wheel comprises a first-stage tooth blade tooth socket and a second-stage tooth blade tooth socket, and the first-stage tooth blade tooth socket is oblique teeth; the tooth grooves of the second-stage tooth cutting edges are arc teeth; the helical teeth and the circular arc teeth are connected in an up-and-down intersecting manner and are uniformly distributed on the circumference; the inner grinding wheel comprises a first stage tooth blade tooth socket, a second stage tooth blade tooth socket and a third stage tooth blade tooth socket; the first-stage tooth blade tooth space and the second-stage tooth blade tooth space are curved oblique teeth, the third-stage tooth blade tooth space is arc teeth, and the curved oblique teeth and the arc teeth are connected in a penetrating manner and are uniformly distributed on the circumference; the utility model discloses should reduce stifled powder and loss, improved the efficiency of crocus, satisfy in the requirement of different consumers to the various tastes of coffee, simple structure technology, the small occupation space who economizes the machine, showing and having reduced manufacturing cost.

Description

Be applied to grinding tool assembly on coffee machine

Technical Field

The utility model relates to a coffee machine accessory field indicates a grinding tool subassembly of being applied to on coffee machine especially.

Background

With the continuous acceleration of life rhythm, the requirements of people on substances are higher and higher, and in order to drink fresh high-quality coffee by many users, consumers put forward higher requirements on a coffee bean grinding machine, so that a high-quality bean grinding machine needs a high-quality and high-efficiency grinding cutter assembly; a grinding tool assembly is therefore particularly necessary for coffee bean grinding machines. Coffee grinds beans machine and automatic mill beans coffee machine in the existing market, because of its bulky of grinding tool, it is inhomogeneous that grinding tooth sword and tooth's socket structure lead to the crocus granule, the too coarse grind of powder is not exquisite influences taste and the taste of coffee, crocus inefficiency, arrange the powder smoothly and cause stifled powder can not easily clean, the processing cost is high, the life-span is short etc. to this experience effect that has influenced the consumer to the product.

In addition, the grinding cutter subassembly of most bean grinding machines and coffee machines mainly adopts plain grinding wheel or blade to grind coffee beans, has that production technology control degree of difficulty is high, the control of crocus volume is difficult, the uneven problem of crocus thickness, has influenced consumer's taste when being used for automatic coffee machine.

Disclosure of Invention

The utility model provides a be applied to the grinding tool subassembly on the coffee machine, can effectively solve crocus volume control difficulty, the uneven scheduling above-mentioned problem of crocus thickness.

In order to achieve the purpose, the utility model adopts the technical proposal that: a grinding tool assembly applied to a coffee machine comprises a cylindrical outer grinding wheel, a conical inner grinding wheel, a first grinding annular space between the inner grinding wheel and the outer grinding wheel, a second grinding annular space between the inner grinding wheel and the outer grinding wheel, and a third grinding annular space between the inner grinding wheel and the outer grinding wheel; the outer grinding wheel comprises a first-stage tooth blade tooth socket and a second-stage tooth blade tooth socket, and the first-stage tooth blade tooth socket is oblique teeth; the tooth grooves of the second-stage tooth cutting edges are arc teeth; the helical teeth and the circular arc teeth are connected in an up-and-down intersecting manner and are uniformly distributed on the circumference; the inner grinding wheel comprises a first stage tooth blade tooth socket, a second stage tooth blade tooth socket and a third stage tooth blade tooth socket; the first-stage tooth blade tooth space and the second-stage tooth blade tooth space are curved oblique teeth, the third-stage tooth blade tooth space is arc teeth, and the curved oblique teeth and the arc teeth are connected in a penetrating manner and are uniformly distributed on the circumference; the first-stage tooth blade tooth socket of the outer grinding wheel and the first-stage tooth blade tooth socket of the inner grinding wheel are interacted in the first annular grinding space, the first-stage tooth blade tooth socket of the outer grinding wheel and the second-stage tooth blade tooth socket of the inner grinding wheel are interacted in the second annular grinding space, and the second-stage tooth blade tooth socket of the outer grinding wheel and the third-stage tooth blade tooth socket of the inner grinding wheel are interacted in the third annular space, so that coarse grinding, fine grinding and fine grinding are completed on coffee beans.

Further, the included angle theta 1 between the inclined tooth slope of the tooth slot of the first-stage tooth blade of the outer grinding wheel and the top surface is equal to or less than 65 degrees; the planar shape of the top of the tooth socket of the first-stage tooth blade of the outer grinding wheel is a scalene triangle, the triangle has a straight line and an opposite side of an arc, the included angle alpha 1 between the straight edge of the tooth blade and the tangent of the arc is equal to or less than 62 degrees, and the included angle beta 1 between the straight edge of the tooth socket and the arc is equal to or less than 79 degrees; the tooth spaces of the first stage tooth edges of the outer grinding wheel are uniformly distributed on the circumference with the diameter phi 1, the diameter phi 1 is equal to or less than 36mm, and the tooth edges and the tooth spaces are equal to or less than 14 teeth and are even numbers.

Furthermore, the tooth socket of the second-stage tooth edge of the outer grinding wheel is in the shape of an arc tooth, the included angle theta 2 between the tangent line of the arc tooth and the bottom surface is equal to or less than 73 degrees, and the planar shapes of the tooth edge and the bottom of the tooth socket are triangles; the tooth edge width W1 and tooth groove width W2 of the tooth groove of the second-stage tooth edge are uniformly distributed on the circumference of the diameter phi 2, the phi 2 is equal to or less than 29.5mm, and the distribution number of the tooth edge and the tooth groove is between 59 and 69 teeth.

Further, the oblique tooth height H1 of the tooth socket of the first stage tooth blade of the outer grinding wheel is larger than the circular arc tooth height H2 of the tooth socket of the second stage tooth blade, namely H1> H2; and the curved oblique tooth height H3 of the tooth socket of the first stage tooth blade of the inner grinding wheel is smaller than the curved oblique tooth height H4 of the tooth socket of the second stage tooth blade, and the curved oblique tooth height H4 of the tooth socket of the second stage tooth blade is smaller than the curved oblique tooth height H5 of the tooth socket of the third stage tooth blade, namely H5> H4> H3.

Furthermore, the first stage tooth edge tooth socket and the second stage tooth edge tooth socket of the inner grinding wheel are both curved oblique teeth, the included angle gamma 1 between the curved slope of the first stage curved oblique teeth and the central line is equal to or less than 25 degrees, the included angle gamma 2 between the curved slope of the second stage curved oblique teeth and the central line is equal to or less than 16 degrees, the third stage tooth edge tooth socket is an arc tooth, and the included angle gamma 3 between the tangent line of the arc tooth and the central line is equal to or less than 24 degrees.

Furthermore, the planar shape of the top of the tooth socket of the first-stage tooth blade of the inner grinding wheel is triangular, the included angle alpha 2 of the cutting edge of the tooth blade is equal to or less than 50 degrees, and the included angle beta 2 of the tooth socket is equal to or more than 100 degrees; the tooth spaces of the first stage tooth edges of the inner grinding wheel are uniformly distributed on the circumference of the diameter phi 3, the phi 3 is equal to or less than 17mm, and the number of the tooth edges and the tooth spaces is equal to or less than 7 and is an odd number.

Further, the tooth space number of the second-stage tooth blade of the inner grinding wheel is equal to or less than 14 teeth and is 2 times of the tooth number of the first stage; the plane shape of the bottom of the third-stage tooth edge tooth groove of the inner grinding wheel is triangular.

Further, the tooth edge width W3 and the tooth groove width W4 of the tooth groove of the third stage tooth edge of the inner grinding wheel are uniformly distributed on the circumference of the diameter phi 4, the phi 4 is equal to or less than 29.5mm, and the number of the tooth edge and the tooth groove is between 39 and 49 teeth.

Further, in the first grinding annular space between the inner grinding wheel and the outer grinding wheel, the direction of the first-stage tooth blade tooth groove of the inner grinding wheel is opposite to that of the first-stage tooth blade tooth groove of the outer grinding wheel, and the coarse teeth are used for coarse teeth, so that the coffee beans are brought into the grinding space for coarse grinding during rotation; in the second grinding space and the third grinding space between the inner grinding wheel and the outer grinding wheel, the coarse tooth to the fine tooth and the fine tooth to the fine tooth are correspondingly realized, the tooth shapes are opposite in direction, and the functions of fine grinding and fine grinding are performed.

Further, the diameter Φ 2 of the outer grinding wheel is equal to the diameter Φ 4 of the inner grinding wheel, i.e., Φ 2 ═ Φ 4; the central hole of the inner grinding wheel is used for being connected with a power source through a shaft and rotates around the central shaft of the inner diameter of the outer grinding wheel for grinding; the symmetrical planes on the two sides of the excircle of the outer grinding wheel are used for fixing the outer grinding wheel and are matched with an adjusting mechanism of the outer grinding wheel through adjusting the annular clearance of the inner grinding wheel and the outer grinding wheel to perform coarse, medium and fine adjustment.

The beneficial effects of the utility model reside in that: the utility model discloses when being applied to the grinding cutter subassembly work on the coffee machine and using, the centre bore through interior emery wheel of taper shape is used for hub connection input power source, it is rotatory around the internal diameter center pin of outer emery wheel, bring coffee beans into first annular grinding space through the first order serrated edge tooth groove of interior emery wheel and the first order serrated edge tooth groove of outer emery wheel during the rotation and carry out the corase grind, coffee powder after the corase grind gets into in the second grinding annular space and carries out the fine grinding through the first order serrated edge tooth groove of outer emery wheel and the second grade serrated edge tooth groove of interior emery wheel, coffee powder after the fine grinding gets into in the third grinding annular space and discharges coffee powder after carrying out the finish grinding through the second grade serrated edge tooth groove of outer emery wheel and the third serrated edge tooth groove of interior emery wheel; the fineness, the fragrance, the quality, the fresh taste and the mouthfeel of the coffee powder are ensured, powder blockage and loss are reduced, and the grinding efficiency is improved; the two symmetrical planes on the outer circle of the outer grinding wheel are used for fixing the outer grinding wheel and are matched with the adjusting mechanism to perform coarse, medium and fine adjustment, so that the requirements of different consumers on various tastes of coffee are met; simultaneously the utility model discloses the characteristics of grinding tool subassembly are that simple structure technology, small save the occupation space of machine, are showing and have reduced manufacturing cost.

Drawings

Fig. 1 is an exploded view of a grinding tool assembly according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structural assembly of the grinding tool assembly according to the embodiment of the present invention.

Fig. 3 is an exploded view of the grinding tool assembly according to an embodiment of the present invention.

Fig. 4 is a schematic sectional view of the cylindrical outer grinding wheel according to the embodiment of the present invention.

Fig. 5 is a schematic structural view of the cylindrical outer grinding wheel in the embodiment of the present invention.

Fig. 6 is a schematic sectional view of the conical inner grinding wheel according to the embodiment of the present invention.

Fig. 7 is a schematic structural view of the conical inner grinding wheel according to the embodiment of the present invention.

Fig. 8 is a schematic view of another embodiment of the present invention showing the assembly of the grinding tool assembly.

The reference numbers illustrate: 1-an outer grinding wheel; 2-an inner grinding wheel; 101-a first grinding annulus; 102-a second grinding annulus; 103-a third grinding annulus; 11 a-outer grinding wheel first stage tooth edge; 11 b-outer grinding wheel first stage tooth socket; 12 a-outer grinding wheel second stage tooth edge; 12 b-outer grinding wheel second stage tooth slot; 21 a-inner grinding wheel first stage tooth edge; 21 b-a first-stage tooth groove of the inner grinding wheel; 22 a-inner grinding wheel second stage tooth edge; 22 b-a second-stage tooth groove of the inner grinding wheel; 23 a-inner grinding wheel third stage tooth edge; 23 b-a third-stage tooth groove of the inner grinding wheel; 104-a central aperture; 105-symmetrical planes on both sides of the excircle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, wherein words that indicate orientation, inner and outer, etc. are used solely for the purpose of illustrating the structure in the corresponding figures.

Referring to fig. 1-2, the present invention relates to a grinding tool assembly for coffee machine, which comprises a cylindrical outer grinding wheel 1, a conical inner grinding wheel 2, a first grinding annular space 101 between the inner grinding wheel 2 and the outer grinding wheel 1, a second grinding annular space 102 between the inner grinding wheel and the outer grinding wheel, and a third grinding annular space 103 between the inner grinding wheel and the outer grinding wheel.

Referring to fig. 2-3, the cylindrical outer grinding wheel 1 is composed of a first stage tooth edge 11a and a tooth space 11b, and a second stage tooth edge 12a and a tooth space 12b, wherein the first stage tooth edge 11a and the tooth space 11b are oblique teeth; the second-stage tooth blade 12a and the tooth groove 12b are circular arc teeth; the helical teeth and the circular arc teeth are connected in an up-and-down crossing way and are uniformly distributed on the circumference; the conical inner grinding wheel 2 consists of a first-stage tooth blade 21a and a tooth slot 21b, a second-stage tooth blade 22a and a tooth slot 22b, and a third-stage tooth blade 23a and a tooth slot 23 b; the first-stage tooth edges 21a and the tooth spaces 21b, the second-stage tooth edges 22a and the tooth spaces 22b are curved oblique teeth, the third-stage tooth edges 23a and the tooth spaces 23b are arc teeth, and the curved oblique teeth and the arc teeth are in through connection and are uniformly distributed on the circumference; the first stage tooth blade 11a and tooth space 11b of the outer grinding wheel 1 and the first stage tooth blade 21a and tooth space 21b of the inner grinding wheel 2 interact in the first annular grinding space 101, the first stage tooth blade 11a and tooth space 11b of the outer grinding wheel 1 and the second stage tooth blade 22a and tooth space 22b of the inner grinding wheel 2 interact in the second annular grinding space 102, and the second stage tooth blade 12a and tooth space 12b of the outer grinding wheel 1 and the third stage tooth blade 23a and tooth space 23b of the inner grinding wheel 2 interact in the third annular space 103, so that coarse, fine and fine grinding of coffee beans is performed.

Referring to fig. 4-5, the first step tooth edge 11a and the tooth slot 11b of the outer grinding wheel 1 are helical teeth, and the included angle θ 1 between the slope and the top surface is equal to or less than 65 °. The planar shapes of the tops of the tooth edges 11a and the tooth grooves 11b are scalene triangles, each triangle has opposite sides of a straight line and a circular arc, the included angle alpha 1 between the straight edge of the tooth edge 11a and the tangent of the circular arc is equal to or less than 62 degrees, the included angle beta 1 between the straight edge of the tooth groove 11b and the circular arc is equal to or less than 79 degrees, the tooth edges 11a and the tooth grooves 11b are uniformly distributed on the circumference with the diameter phi 1, the diameter of the phi 1 is equal to or less than 36mm, and the tooth edges 11a and the tooth grooves 11b are equal to or less than 14 teeth and are even numbers; the second-stage tooth edges 12a and the tooth grooves 12b are circular-arc teeth, the included angle theta 2 between the tangent line of the circular-arc teeth and the bottom surface is equal to or less than 73 degrees, the planar shapes of the bottoms of the tooth edges 12a and the tooth grooves 12b are triangular, the width W1 of the tooth edges 12a and the width W2 of the tooth grooves 12b are uniformly distributed on the circumference of the diameter phi 2, the phi 2 is equal to or less than 29.5mm, the distribution number of the tooth edges 12a and the tooth grooves 12b is between 59-69 teeth, and the inclined tooth height H1 of the first-stage tooth edges 11a and the tooth grooves 11b is greater than the circular-arc tooth height H2 of the second-stage tooth edges 12a and the tooth grooves 12b, namely H1 is greater than H2.

Referring to fig. 6-7, the first stage tooth edge 21a and tooth space 21b, the second stage tooth edge 22a and tooth space 22b of the conical inner grinding wheel 2 are curved skewed teeth, the included angle γ 1 between the curve slope of the first stage tooth edge 21a and tooth space 21b and the central line is equal to or less than 25 °, the included angle γ 2 between the curve slope of the second stage tooth edge 22a and tooth space 22b and the central line is equal to or less than 16 °, the third stage tooth edge 23a and tooth space 23b are circular arc teeth, the included angle γ 3 between the tangent of the circular arc teeth and the central line is equal to or less than 24 °, the top plane shapes of the first stage tooth edge 21a and tooth space 21b are triangles, the included angle α 2 of the tooth edge 21a is equal to or less than 50 °, the included angle β 2 of the tooth space 21b is equal to or greater than 100 °, the tooth edges 21a and 21b are uniformly distributed on the circumference of the tooth space with the diameter Φ 3, and the Φ 3 is equal to or less than 17mm, the number of the tooth edges 21a and the tooth space 21b is equal to or less than 7, and is odd; the number of teeth of the second-stage tooth blade 22a and the tooth groove 22b is equal to or less than 14 teeth and is 2 times of the number of teeth of the first stage; the bottom plane shapes of the third-stage tooth blade 23a and the tooth slot 23b are triangles, the width W3 of the tooth blade 23a and the width W4 of the tooth slot 23b are uniformly distributed on the circumference of the diameter phi 4, the phi 4 is equal to or less than 29.5mm, and the tooth number of the tooth blade 23a and the tooth slot 23b is between 39 and 49 teeth; the curved skewed tooth height H3 of the first stage tooth edge 21a and tooth slot 21b, the curved skewed tooth height H4 of the second stage tooth edge 22a and tooth slot 22b, and the curved skewed tooth height H5 of the third stage tooth edge 23a and tooth slot 23b, i.e., H5> H4> H3.

Referring to fig. 8, when the grinding tool assembly is used, the central hole 104 of the conical inner grinding wheel 2 is used for connecting an input power source, rotates around the inner diameter central axis of the outer grinding wheel 1, is used for fixing the outer grinding wheel 1 through the symmetrical planes 105 on the two sides of the outer circle of the outer grinding wheel 1, and is matched with the adjusting mechanism to perform coarse, medium and fine adjustment, so as to meet the requirements of different consumers on various tastes of coffee.

When the grinding cutter component applied to the coffee machine in the embodiment works and uses, the central hole of the conical inner grinding wheel 2 is used for connecting an input power source through a shaft, the grinding cutter component rotates around the central shaft of the inner diameter of the outer grinding wheel 1, coffee beans are brought into the first annular grinding space 101 for coarse grinding through the first-stage tooth blade 21a and the tooth socket 21b of the inner grinding wheel 2 and the first-stage tooth blade 11a and the tooth socket 11b of the outer grinding wheel 1 during rotation, the coffee powder after coarse grinding enters the second grinding annular space 102 for fine grinding through the first-stage tooth blade 11a and the tooth socket 11b of the outer grinding wheel 1 and the second-stage tooth blade 22a and the tooth socket 22b of the inner grinding wheel 2, the coffee powder after fine grinding enters the third grinding annular space 103, and is finely ground through the second-stage tooth blade 12a and tooth groove 12b of the outer grinding wheel 1 and the third-stage tooth blade 23a and tooth groove 23b of the inner grinding wheel 2, and then the coffee powder is discharged; the fineness, the fragrance, the quality, the fresh taste and the mouthfeel of the coffee powder are ensured, powder blockage and loss are reduced, and the grinding efficiency is improved; the two symmetrical planes on the two sides of the excircle of the outer grinding wheel 1 are used for fixing the outer grinding wheel 1 and are matched with an adjusting mechanism of the outer grinding wheel to perform coarse, medium and fine adjustment, so that the requirements of different consumers on various tastes of coffee are met; simultaneously the utility model discloses the characteristics of grinding tool subassembly are that simple structure technology, small save the occupation space of machine, are showing and have reduced manufacturing cost.

It is further understood that the terms "connected," "secured," "disposed," and the like are to be construed broadly and to encompass specific meanings of the terms in the application as set forth herein by those of ordinary skill in the art based on the context in which the term is intended and unless otherwise specifically stated or limited. Furthermore the utility model provides a grinding tool subassembly can be applied to coffee bean grinder and full-automatic coffee machine technical field, and it not only can be used for grinding drinks such as coffee, soybean, can also be used for grinding other massive materials, thereby can carry out corresponding equipment grinding tool subassembly according to user's demand and reach the grinding purpose when this grinding tool subassembly, the utility model discloses not enumerate one by one here. Simultaneously, this grinding tool subassembly can be the automatic grinder of equipment, the utility model discloses do not do the restriction here.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims (10)

1. A kind of grinding tool assembly used in coffee machine, characterized by: the grinding device comprises a cylindrical outer grinding wheel, a conical inner grinding wheel, a first grinding annular space between the inner grinding wheel and the outer grinding wheel, a second grinding annular space between the inner grinding wheel and the outer grinding wheel, and a third grinding annular space between the inner grinding wheel and the outer grinding wheel; the outer grinding wheel comprises a first-stage tooth blade tooth socket and a second-stage tooth blade tooth socket, and the first-stage tooth blade tooth socket is oblique teeth; the tooth grooves of the second-stage tooth cutting edges are arc teeth; the helical teeth and the circular arc teeth are connected in an up-and-down intersecting manner and are uniformly distributed on the circumference;

the inner grinding wheel comprises a first stage tooth blade tooth socket, a second stage tooth blade tooth socket and a third stage tooth blade tooth socket; the first-stage tooth blade tooth space and the second-stage tooth blade tooth space are curved oblique teeth, the third-stage tooth blade tooth space is circular arc teeth, and the curved oblique teeth and the circular arc teeth are connected in a penetrating mode and are evenly distributed on the circumference.

2. The grinding tool assembly for coffee machine as set forth in claim 1, wherein the angle θ 1 between the inclination of the inclined teeth of the tooth-cutting edge tooth groove of the first stage of the outer grinding wheel and the top surface is equal to or less than 65 °; the planar shape of the top of the tooth socket of the first-stage tooth blade of the outer grinding wheel is a scalene triangle, the triangle has a straight line and an opposite side of an arc, the included angle alpha 1 between the straight edge of the tooth blade and the tangent of the arc is equal to or less than 62 degrees, and the included angle beta 1 between the straight edge of the tooth socket and the arc is equal to or less than 79 degrees; the tooth spaces of the first-stage tooth edges of the outer grinding wheel are uniformly distributed on the circumference of the diameter phi 1, the diameter of the phi 1 is equal to or less than 36mm, and the tooth edges and the tooth spaces are equal to or less than 14 teeth and are even numbers.

3. The grinding tool assembly for coffee machine as claimed in claim 1, wherein the tooth grooves of the second stage teeth of the outer grinding wheel are arc teeth, the included angle θ 2 between the tangent line of the arc teeth and the bottom surface is equal to or less than 73 °, and the planar shapes of the teeth and the tooth groove bottom are triangular; the tooth edge width W1 and the tooth groove width W2 of the tooth grooves of the second-stage tooth edges are uniformly distributed on the circumference of the diameter phi 2, the phi 2 is equal to or less than 29.5mm, and the distribution number of the tooth edges and the tooth grooves is between 59 and 69 teeth.

4. The grinding tool assembly for coffee machine as claimed in claim 1, wherein the inclined tooth height H1 of the tooth slot of the first stage tooth blade of the outer grinding wheel is greater than the circular arc tooth height H2 of the tooth slot of the second stage tooth blade; the curved skewed tooth height H3 of the tooth socket of the first stage tooth blade of the inner grinding wheel is smaller than the curved skewed tooth height H4 of the tooth socket of the second stage tooth blade, and the curved skewed tooth height H4 of the tooth socket of the second stage tooth blade is smaller than the curved skewed tooth height H5 of the tooth socket of the third stage tooth blade.

5. The grinding cutter assembly for coffee machine as set forth in claim 1, wherein the first stage tooth edge tooth grooves and the second stage tooth edge tooth grooves of the inner grinding wheel are curved oblique teeth, the first stage curved oblique teeth have a curved slope with an angle γ 1 equal to or smaller than 25 ° with respect to the center line, the second stage curved oblique teeth have a curved slope with an angle γ 2 equal to or smaller than 16 ° with respect to the center line, and the third stage tooth edge tooth grooves are circular arc teeth having a tangent line with an angle γ 3 equal to or smaller than 24 °.

6. The grinding tool assembly for coffee machine as claimed in claim 1 or 5, wherein the planar shape of the top of the tooth socket of the first stage tooth edge of the inner grinding wheel is triangular, the included angle α 2 of the tooth edge is equal to or less than 50 °, and the included angle β 2 of the tooth socket is equal to or greater than 100 °; the tooth spaces of the first stage tooth edges of the inner grinding wheel are uniformly distributed on the circumference of the diameter phi 3, the phi 3 is equal to or less than 17mm, and the number of the tooth edges and the tooth spaces is equal to or less than 7 and is an odd number.

7. The grinding tool assembly for coffee machine as claimed in claim 1 or 5, wherein the number of teeth of the second stage teeth blade of the inner grinding wheel is equal to or less than 14 teeth and is 2 times the number of teeth of the first stage; the plane shape of the bottom of the third-stage tooth blade tooth groove of the inner grinding wheel is triangular.

8. The grinding tool assembly for coffee machine as claimed in claim 1 or 5, wherein the tooth edge width W3 and the tooth space width W4 of the tooth space of the third stage of the inner grinding wheel are uniformly distributed on the circumference of the diameter phi 4, the phi 4 is equal to or less than 29.5mm, and the number of tooth edges and tooth spaces is between 39-49 teeth.

9. The grinding tool assembly for coffee machine as claimed in claim 1, wherein in the first grinding annular space between the inner grinding wheel and the outer grinding wheel, the first stage tooth edge tooth groove of the inner grinding wheel is opposite to the first stage tooth edge tooth groove of the outer grinding wheel in the direction of inclined teeth, and the coarse teeth are opposite to the coarse teeth, and the coffee beans are brought into the grinding space for coarse grinding when the coarse teeth rotate; in the second grinding space and the third grinding space between the inner grinding wheel and the outer grinding wheel, the coarse tooth to the fine tooth and the fine tooth to the fine tooth are correspondingly realized, the tooth shapes are opposite in direction, and the functions of fine grinding and fine grinding are performed.

10. The grinding tool assembly for coffee machine as claimed in claim 1, wherein the diameter Φ 2 of the outer grinding wheel is equal to the diameter Φ 4 of the inner grinding wheel; the central hole of the inner grinding wheel is used for connecting a power source in a shaft mode and rotates around the central shaft of the inner diameter of the outer grinding wheel for grinding; the symmetrical planes on the two sides of the excircle of the outer grinding wheel are used for fixing the outer grinding wheel and are matched with an adjusting mechanism of the outer grinding wheel through adjusting the annular clearance of the inner grinding wheel and the outer grinding wheel to perform coarse, medium and fine adjustment.

Images